From aa0fe18bf6bb30971f220d951bdb0d687998a777 Mon Sep 17 00:00:00 2001 From: Sergii Pylypenko Date: Sat, 1 Jan 2022 21:36:48 +0200 Subject: [PATCH] Replace jpeg and png libraries with the libraries from SDL2_image --- project/jni/jpeg/Android.mk | 38 - project/jni/jpeg/MODULE_LICENSE_BSD_LIKE | 0 project/jni/jpeg/NOTICE | 38 - project/jni/jpeg/README | 385 -- project/jni/jpeg/ansi2knr.1 | 36 - project/jni/jpeg/ansi2knr.c | 693 --- project/jni/jpeg/cderror.h | 132 - project/jni/jpeg/cdjpeg.c | 181 - project/jni/jpeg/cdjpeg.h | 184 - project/jni/jpeg/change.log | 217 - project/jni/jpeg/cjpeg.1 | 292 -- project/jni/jpeg/cjpeg.c | 606 --- project/jni/jpeg/ckconfig.c | 402 -- project/jni/jpeg/coderules.doc | 118 - project/jni/jpeg/config.guess | 883 ---- project/jni/jpeg/config.sub | 954 ---- project/jni/jpeg/configure | 2011 ------- project/jni/jpeg/djpeg.1 | 253 - project/jni/jpeg/djpeg.c | 616 --- project/jni/jpeg/example.c | 433 -- project/jni/jpeg/filelist.doc | 210 - project/jni/jpeg/include/jconfig.h | 156 - project/jni/jpeg/include/jerror.h | 291 -- project/jni/jpeg/include/jmorecfg.h | 387 -- project/jni/jpeg/include/jpegint.h | 392 -- project/jni/jpeg/include/jpeglib.h | 1108 ---- project/jni/jpeg/install-sh | 250 - project/jni/jpeg/install.doc | 1063 ---- project/jni/jpeg/jcapimin.c | 280 - project/jni/jpeg/jcapistd.c | 161 - project/jni/jpeg/jccoefct.c | 449 -- project/jni/jpeg/jccolor.c | 527 -- project/jni/jpeg/jcdctmgr.c | 387 -- project/jni/jpeg/jchuff.c | 909 ---- project/jni/jpeg/jchuff.h | 47 - project/jni/jpeg/jcinit.c | 72 - project/jni/jpeg/jcmainct.c | 293 -- project/jni/jpeg/jcmarker.c | 664 --- project/jni/jpeg/jcmaster.c | 590 --- project/jni/jpeg/jcomapi.c | 106 - project/jni/jpeg/jconfig.bcc | 48 - project/jni/jpeg/jconfig.cfg | 44 - project/jni/jpeg/jconfig.dj | 38 - project/jni/jpeg/jconfig.doc | 155 - project/jni/jpeg/jconfig.mac | 43 - project/jni/jpeg/jconfig.manx | 43 - project/jni/jpeg/jconfig.mc6 | 52 - 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project/jni/jpeg/libjpeg.doc | 3006 ----------- project/jni/jpeg/ltconfig | 1512 ------ project/jni/jpeg/ltmain.sh | 2453 --------- project/jni/jpeg/makcjpeg.st | 38 - project/jni/jpeg/makdjpeg.st | 38 - project/jni/jpeg/makeapps.ds | 828 --- project/jni/jpeg/makefile.ansi | 214 - project/jni/jpeg/makefile.bcc | 285 - project/jni/jpeg/makefile.cfg | 319 -- project/jni/jpeg/makefile.dj | 220 - project/jni/jpeg/makefile.manx | 214 - project/jni/jpeg/makefile.mc6 | 249 - project/jni/jpeg/makefile.mms | 218 - project/jni/jpeg/makefile.sas | 252 - project/jni/jpeg/makefile.unix | 228 - project/jni/jpeg/makefile.vc | 211 - project/jni/jpeg/makefile.vms | 142 - project/jni/jpeg/makefile.wat | 233 - project/jni/jpeg/makelib.ds | 1046 ---- project/jni/jpeg/makeproj.mac | 213 - project/jni/jpeg/makljpeg.st | 70 - project/jni/jpeg/maktjpeg.st | 32 - project/jni/jpeg/makvms.opt | 4 - project/jni/jpeg/rdbmp.c | 439 -- project/jni/jpeg/rdcolmap.c | 253 - project/jni/jpeg/rdgif.c | 38 - 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13 - project/jni/png/CHANGES | 6051 ---------------------- project/jni/png/INSTALL | 465 -- project/jni/png/LICENSE | 133 - project/jni/png/README | 222 - project/jni/png/include/png.h | 3278 ------------ project/jni/png/include/pngconf.h | 622 --- project/jni/png/include/pnglibconf.h | 220 - project/jni/png/png.c | 4614 ----------------- project/jni/png/pngdebug.h | 153 - project/jni/png/pngerror.c | 963 ---- project/jni/png/pngget.c | 1248 ----- project/jni/png/pnginfo.h | 267 - project/jni/png/pngmem.c | 284 - project/jni/png/pngpread.c | 1096 ---- project/jni/png/pngpriv.h | 2120 -------- project/jni/png/pngread.c | 4219 --------------- project/jni/png/pngrio.c | 120 - project/jni/png/pngrtran.c | 5010 ------------------ project/jni/png/pngrutil.c | 4661 ----------------- project/jni/png/pngset.c | 1802 ------- project/jni/png/pngstruct.h | 483 -- project/jni/png/pngtrans.c | 864 --- project/jni/png/pngwio.c | 168 - project/jni/png/pngwrite.c | 2396 --------- 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jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c \ - jmem-android.c - -# the assembler is only for the ARM version, don't break the Linux sim -ifneq ($(TARGET_ARCH),arm) -ANDROID_JPEG_NO_ASSEMBLER := true -endif - -# temp fix until we understand why this broke cnn.com -#ANDROID_JPEG_NO_ASSEMBLER := true - -ifeq ($(strip $(ANDROID_JPEG_NO_ASSEMBLER)),true) -LOCAL_SRC_FILES += jidctint.c jidctfst.c -else -LOCAL_SRC_FILES += jidctint.c jidctfst.S -endif - -LOCAL_C_INCLUDES := $(LOCAL_PATH)/include -LOCAL_CFLAGS += -DAVOID_TABLES -LOCAL_CFLAGS += -O3 -fstrict-aliasing -fprefetch-loop-arrays - -LOCAL_MODULE:= jpeg - -include $(BUILD_STATIC_LIBRARY) diff --git a/project/jni/jpeg/MODULE_LICENSE_BSD_LIKE b/project/jni/jpeg/MODULE_LICENSE_BSD_LIKE deleted file mode 100644 index e69de29bb..000000000 diff --git a/project/jni/jpeg/NOTICE b/project/jni/jpeg/NOTICE deleted file mode 100644 index 007625fec..000000000 --- a/project/jni/jpeg/NOTICE +++ /dev/null @@ -1,38 +0,0 @@ -This software is based in part on the work of the Independent JPEG Group. - ----------------------- - -The authors make NO WARRANTY or representation, either express or implied, -with respect to this software, its quality, accuracy, merchantability, or -fitness for a particular purpose. This software is provided "AS IS", and you, -its user, assume the entire risk as to its quality and accuracy. - -This software is copyright (C) 1991-1998, Thomas G. Lane. -All Rights Reserved except as specified below. - -Permission is hereby granted to use, copy, modify, and distribute this -software (or portions thereof) for any purpose, without fee, subject to these -conditions: -(1) If any part of the source code for this software is distributed, then this -README file must be included, with this copyright and no-warranty notice -unaltered; and any additions, deletions, or changes to the original files -must be clearly indicated in accompanying documentation. -(2) If only executable code is distributed, then the accompanying -documentation must state that "this software is based in part on the work of -the Independent JPEG Group". -(3) Permission for use of this software is granted only if the user accepts -full responsibility for any undesirable consequences; the authors accept -NO LIABILITY for damages of any kind. - -These conditions apply to any software derived from or based on the IJG code, -not just to the unmodified library. If you use our work, you ought to -acknowledge us. - -Permission is NOT granted for the use of any IJG author's name or company name -in advertising or publicity relating to this software or products derived from -it. This software may be referred to only as "the Independent JPEG Group's -software". - -We specifically permit and encourage the use of this software as the basis of -commercial products, provided that all warranty or liability claims are -assumed by the product vendor. diff --git a/project/jni/jpeg/README b/project/jni/jpeg/README deleted file mode 100644 index 86cc20669..000000000 --- a/project/jni/jpeg/README +++ /dev/null @@ -1,385 +0,0 @@ -The Independent JPEG Group's JPEG software -========================================== - -README for release 6b of 27-Mar-1998 -==================================== - -This distribution contains the sixth public release of the Independent JPEG -Group's free JPEG software. You are welcome to redistribute this software and -to use it for any purpose, subject to the conditions under LEGAL ISSUES, below. - -Serious users of this software (particularly those incorporating it into -larger programs) should contact IJG at jpeg-info@uunet.uu.net to be added to -our electronic mailing list. Mailing list members are notified of updates -and have a chance to participate in technical discussions, etc. - -This software is the work of Tom Lane, Philip Gladstone, Jim Boucher, -Lee Crocker, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, -Guido Vollbeding, Ge' Weijers, and other members of the Independent JPEG -Group. - -IJG is not affiliated with the official ISO JPEG standards committee. - - -DOCUMENTATION ROADMAP -===================== - -This file contains the following sections: - -OVERVIEW General description of JPEG and the IJG software. -LEGAL ISSUES Copyright, lack of warranty, terms of distribution. -REFERENCES Where to learn more about JPEG. -ARCHIVE LOCATIONS Where to find newer versions of this software. -RELATED SOFTWARE Other stuff you should get. -FILE FORMAT WARS Software *not* to get. -TO DO Plans for future IJG releases. - -Other documentation files in the distribution are: - -User documentation: - install.doc How to configure and install the IJG software. - usage.doc Usage instructions for cjpeg, djpeg, jpegtran, - rdjpgcom, and wrjpgcom. - *.1 Unix-style man pages for programs (same info as usage.doc). - wizard.doc Advanced usage instructions for JPEG wizards only. - change.log Version-to-version change highlights. -Programmer and internal documentation: - libjpeg.doc How to use the JPEG library in your own programs. - example.c Sample code for calling the JPEG library. - structure.doc Overview of the JPEG library's internal structure. - filelist.doc Road map of IJG files. - coderules.doc Coding style rules --- please read if you contribute code. - -Please read at least the files install.doc and usage.doc. Useful information -can also be found in the JPEG FAQ (Frequently Asked Questions) article. See -ARCHIVE LOCATIONS below to find out where to obtain the FAQ article. - -If you want to understand how the JPEG code works, we suggest reading one or -more of the REFERENCES, then looking at the documentation files (in roughly -the order listed) before diving into the code. - - -OVERVIEW -======== - -This package contains C software to implement JPEG image compression and -decompression. JPEG (pronounced "jay-peg") is a standardized compression -method for full-color and gray-scale images. JPEG is intended for compressing -"real-world" scenes; line drawings, cartoons and other non-realistic images -are not its strong suit. JPEG is lossy, meaning that the output image is not -exactly identical to the input image. Hence you must not use JPEG if you -have to have identical output bits. However, on typical photographic images, -very good compression levels can be obtained with no visible change, and -remarkably high compression levels are possible if you can tolerate a -low-quality image. For more details, see the references, or just experiment -with various compression settings. - -This software implements JPEG baseline, extended-sequential, and progressive -compression processes. Provision is made for supporting all variants of these -processes, although some uncommon parameter settings aren't implemented yet. -For legal reasons, we are not distributing code for the arithmetic-coding -variants of JPEG; see LEGAL ISSUES. We have made no provision for supporting -the hierarchical or lossless processes defined in the standard. - -We provide a set of library routines for reading and writing JPEG image files, -plus two sample applications "cjpeg" and "djpeg", which use the library to -perform conversion between JPEG and some other popular image file formats. -The library is intended to be reused in other applications. - -In order to support file conversion and viewing software, we have included -considerable functionality beyond the bare JPEG coding/decoding capability; -for example, the color quantization modules are not strictly part of JPEG -decoding, but they are essential for output to colormapped file formats or -colormapped displays. These extra functions can be compiled out of the -library if not required for a particular application. We have also included -"jpegtran", a utility for lossless transcoding between different JPEG -processes, and "rdjpgcom" and "wrjpgcom", two simple applications for -inserting and extracting textual comments in JFIF files. - -The emphasis in designing this software has been on achieving portability and -flexibility, while also making it fast enough to be useful. In particular, -the software is not intended to be read as a tutorial on JPEG. (See the -REFERENCES section for introductory material.) Rather, it is intended to -be reliable, portable, industrial-strength code. We do not claim to have -achieved that goal in every aspect of the software, but we strive for it. - -We welcome the use of this software as a component of commercial products. -No royalty is required, but we do ask for an acknowledgement in product -documentation, as described under LEGAL ISSUES. - - -LEGAL ISSUES -============ - -In plain English: - -1. We don't promise that this software works. (But if you find any bugs, - please let us know!) -2. You can use this software for whatever you want. You don't have to pay us. -3. You may not pretend that you wrote this software. If you use it in a - program, you must acknowledge somewhere in your documentation that - you've used the IJG code. - -In legalese: - -The authors make NO WARRANTY or representation, either express or implied, -with respect to this software, its quality, accuracy, merchantability, or -fitness for a particular purpose. This software is provided "AS IS", and you, -its user, assume the entire risk as to its quality and accuracy. - -This software is copyright (C) 1991-1998, Thomas G. Lane. -All Rights Reserved except as specified below. - -Permission is hereby granted to use, copy, modify, and distribute this -software (or portions thereof) for any purpose, without fee, subject to these -conditions: -(1) If any part of the source code for this software is distributed, then this -README file must be included, with this copyright and no-warranty notice -unaltered; and any additions, deletions, or changes to the original files -must be clearly indicated in accompanying documentation. -(2) If only executable code is distributed, then the accompanying -documentation must state that "this software is based in part on the work of -the Independent JPEG Group". -(3) Permission for use of this software is granted only if the user accepts -full responsibility for any undesirable consequences; the authors accept -NO LIABILITY for damages of any kind. - -These conditions apply to any software derived from or based on the IJG code, -not just to the unmodified library. If you use our work, you ought to -acknowledge us. - -Permission is NOT granted for the use of any IJG author's name or company name -in advertising or publicity relating to this software or products derived from -it. This software may be referred to only as "the Independent JPEG Group's -software". - -We specifically permit and encourage the use of this software as the basis of -commercial products, provided that all warranty or liability claims are -assumed by the product vendor. - - -ansi2knr.c is included in this distribution by permission of L. Peter Deutsch, -sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA. -ansi2knr.c is NOT covered by the above copyright and conditions, but instead -by the usual distribution terms of the Free Software Foundation; principally, -that you must include source code if you redistribute it. (See the file -ansi2knr.c for full details.) However, since ansi2knr.c is not needed as part -of any program generated from the IJG code, this does not limit you more than -the foregoing paragraphs do. - -The Unix configuration script "configure" was produced with GNU Autoconf. -It is copyright by the Free Software Foundation but is freely distributable. -The same holds for its supporting scripts (config.guess, config.sub, -ltconfig, ltmain.sh). Another support script, install-sh, is copyright -by M.I.T. but is also freely distributable. - -It appears that the arithmetic coding option of the JPEG spec is covered by -patents owned by IBM, AT&T, and Mitsubishi. Hence arithmetic coding cannot -legally be used without obtaining one or more licenses. For this reason, -support for arithmetic coding has been removed from the free JPEG software. -(Since arithmetic coding provides only a marginal gain over the unpatented -Huffman mode, it is unlikely that very many implementations will support it.) -So far as we are aware, there are no patent restrictions on the remaining -code. - -The IJG distribution formerly included code to read and write GIF files. -To avoid entanglement with the Unisys LZW patent, GIF reading support has -been removed altogether, and the GIF writer has been simplified to produce -"uncompressed GIFs". This technique does not use the LZW algorithm; the -resulting GIF files are larger than usual, but are readable by all standard -GIF decoders. - -We are required to state that - "The Graphics Interchange Format(c) is the Copyright property of - CompuServe Incorporated. GIF(sm) is a Service Mark property of - CompuServe Incorporated." - - -REFERENCES -========== - -We highly recommend reading one or more of these references before trying to -understand the innards of the JPEG software. - -The best short technical introduction to the JPEG compression algorithm is - Wallace, Gregory K. "The JPEG Still Picture Compression Standard", - Communications of the ACM, April 1991 (vol. 34 no. 4), pp. 30-44. -(Adjacent articles in that issue discuss MPEG motion picture compression, -applications of JPEG, and related topics.) If you don't have the CACM issue -handy, a PostScript file containing a revised version of Wallace's article is -available at ftp://ftp.uu.net/graphics/jpeg/wallace.ps.gz. The file (actually -a preprint for an article that appeared in IEEE Trans. Consumer Electronics) -omits the sample images that appeared in CACM, but it includes corrections -and some added material. Note: the Wallace article is copyright ACM and IEEE, -and it may not be used for commercial purposes. - -A somewhat less technical, more leisurely introduction to JPEG can be found in -"The Data Compression Book" by Mark Nelson and Jean-loup Gailly, published by -M&T Books (New York), 2nd ed. 1996, ISBN 1-55851-434-1. This book provides -good explanations and example C code for a multitude of compression methods -including JPEG. It is an excellent source if you are comfortable reading C -code but don't know much about data compression in general. The book's JPEG -sample code is far from industrial-strength, but when you are ready to look -at a full implementation, you've got one here... - -The best full description of JPEG is the textbook "JPEG Still Image Data -Compression Standard" by William B. Pennebaker and Joan L. Mitchell, published -by Van Nostrand Reinhold, 1993, ISBN 0-442-01272-1. Price US$59.95, 638 pp. -The book includes the complete text of the ISO JPEG standards (DIS 10918-1 -and draft DIS 10918-2). This is by far the most complete exposition of JPEG -in existence, and we highly recommend it. - -The JPEG standard itself is not available electronically; you must order a -paper copy through ISO or ITU. (Unless you feel a need to own a certified -official copy, we recommend buying the Pennebaker and Mitchell book instead; -it's much cheaper and includes a great deal of useful explanatory material.) -In the USA, copies of the standard may be ordered from ANSI Sales at (212) -642-4900, or from Global Engineering Documents at (800) 854-7179. (ANSI -doesn't take credit card orders, but Global does.) It's not cheap: as of -1992, ANSI was charging $95 for Part 1 and $47 for Part 2, plus 7% -shipping/handling. The standard is divided into two parts, Part 1 being the -actual specification, while Part 2 covers compliance testing methods. Part 1 -is titled "Digital Compression and Coding of Continuous-tone Still Images, -Part 1: Requirements and guidelines" and has document numbers ISO/IEC IS -10918-1, ITU-T T.81. Part 2 is titled "Digital Compression and Coding of -Continuous-tone Still Images, Part 2: Compliance testing" and has document -numbers ISO/IEC IS 10918-2, ITU-T T.83. - -Some extensions to the original JPEG standard are defined in JPEG Part 3, -a newer ISO standard numbered ISO/IEC IS 10918-3 and ITU-T T.84. IJG -currently does not support any Part 3 extensions. - -The JPEG standard does not specify all details of an interchangeable file -format. For the omitted details we follow the "JFIF" conventions, revision -1.02. A copy of the JFIF spec is available from: - Literature Department - C-Cube Microsystems, Inc. - 1778 McCarthy Blvd. - Milpitas, CA 95035 - phone (408) 944-6300, fax (408) 944-6314 -A PostScript version of this document is available by FTP at -ftp://ftp.uu.net/graphics/jpeg/jfif.ps.gz. There is also a plain text -version at ftp://ftp.uu.net/graphics/jpeg/jfif.txt.gz, but it is missing -the figures. - -The TIFF 6.0 file format specification can be obtained by FTP from -ftp://ftp.sgi.com/graphics/tiff/TIFF6.ps.gz. The JPEG incorporation scheme -found in the TIFF 6.0 spec of 3-June-92 has a number of serious problems. -IJG does not recommend use of the TIFF 6.0 design (TIFF Compression tag 6). -Instead, we recommend the JPEG design proposed by TIFF Technical Note #2 -(Compression tag 7). Copies of this Note can be obtained from ftp.sgi.com or -from ftp://ftp.uu.net/graphics/jpeg/. It is expected that the next revision -of the TIFF spec will replace the 6.0 JPEG design with the Note's design. -Although IJG's own code does not support TIFF/JPEG, the free libtiff library -uses our library to implement TIFF/JPEG per the Note. libtiff is available -from ftp://ftp.sgi.com/graphics/tiff/. - - -ARCHIVE LOCATIONS -================= - -The "official" archive site for this software is ftp.uu.net (Internet -address 192.48.96.9). The most recent released version can always be found -there in directory graphics/jpeg. This particular version will be archived -as ftp://ftp.uu.net/graphics/jpeg/jpegsrc.v6b.tar.gz. If you don't have -direct Internet access, UUNET's archives are also available via UUCP; contact -help@uunet.uu.net for information on retrieving files that way. - -Numerous Internet sites maintain copies of the UUNET files. However, only -ftp.uu.net is guaranteed to have the latest official version. - -You can also obtain this software in DOS-compatible "zip" archive format from -the SimTel archives (ftp://ftp.simtel.net/pub/simtelnet/msdos/graphics/), or -on CompuServe in the Graphics Support forum (GO CIS:GRAPHSUP), library 12 -"JPEG Tools". Again, these versions may sometimes lag behind the ftp.uu.net -release. - -The JPEG FAQ (Frequently Asked Questions) article is a useful source of -general information about JPEG. It is updated constantly and therefore is -not included in this distribution. The FAQ is posted every two weeks to -Usenet newsgroups comp.graphics.misc, news.answers, and other groups. -It is available on the World Wide Web at http://www.faqs.org/faqs/jpeg-faq/ -and other news.answers archive sites, including the official news.answers -archive at rtfm.mit.edu: ftp://rtfm.mit.edu/pub/usenet/news.answers/jpeg-faq/. -If you don't have Web or FTP access, send e-mail to mail-server@rtfm.mit.edu -with body - send usenet/news.answers/jpeg-faq/part1 - send usenet/news.answers/jpeg-faq/part2 - - -RELATED SOFTWARE -================ - -Numerous viewing and image manipulation programs now support JPEG. (Quite a -few of them use this library to do so.) The JPEG FAQ described above lists -some of the more popular free and shareware viewers, and tells where to -obtain them on Internet. - -If you are on a Unix machine, we highly recommend Jef Poskanzer's free -PBMPLUS software, which provides many useful operations on PPM-format image -files. In particular, it can convert PPM images to and from a wide range of -other formats, thus making cjpeg/djpeg considerably more useful. The latest -version is distributed by the NetPBM group, and is available from numerous -sites, notably ftp://wuarchive.wustl.edu/graphics/graphics/packages/NetPBM/. -Unfortunately PBMPLUS/NETPBM is not nearly as portable as the IJG software is; -you are likely to have difficulty making it work on any non-Unix machine. - -A different free JPEG implementation, written by the PVRG group at Stanford, -is available from ftp://havefun.stanford.edu/pub/jpeg/. This program -is designed for research and experimentation rather than production use; -it is slower, harder to use, and less portable than the IJG code, but it -is easier to read and modify. Also, the PVRG code supports lossless JPEG, -which we do not. (On the other hand, it doesn't do progressive JPEG.) - - -FILE FORMAT WARS -================ - -Some JPEG programs produce files that are not compatible with our library. -The root of the problem is that the ISO JPEG committee failed to specify a -concrete file format. Some vendors "filled in the blanks" on their own, -creating proprietary formats that no one else could read. (For example, none -of the early commercial JPEG implementations for the Macintosh were able to -exchange compressed files.) - -The file format we have adopted is called JFIF (see REFERENCES). This format -has been agreed to by a number of major commercial JPEG vendors, and it has -become the de facto standard. JFIF is a minimal or "low end" representation. -We recommend the use of TIFF/JPEG (TIFF revision 6.0 as modified by TIFF -Technical Note #2) for "high end" applications that need to record a lot of -additional data about an image. TIFF/JPEG is fairly new and not yet widely -supported, unfortunately. - -The upcoming JPEG Part 3 standard defines a file format called SPIFF. -SPIFF is interoperable with JFIF, in the sense that most JFIF decoders should -be able to read the most common variant of SPIFF. SPIFF has some technical -advantages over JFIF, but its major claim to fame is simply that it is an -official standard rather than an informal one. At this point it is unclear -whether SPIFF will supersede JFIF or whether JFIF will remain the de-facto -standard. IJG intends to support SPIFF once the standard is frozen, but we -have not decided whether it should become our default output format or not. -(In any case, our decoder will remain capable of reading JFIF indefinitely.) - -Various proprietary file formats incorporating JPEG compression also exist. -We have little or no sympathy for the existence of these formats. Indeed, -one of the original reasons for developing this free software was to help -force convergence on common, open format standards for JPEG files. Don't -use a proprietary file format! - - -TO DO -===== - -The major thrust for v7 will probably be improvement of visual quality. -The current method for scaling the quantization tables is known not to be -very good at low Q values. We also intend to investigate block boundary -smoothing, "poor man's variable quantization", and other means of improving -quality-vs-file-size performance without sacrificing compatibility. - -In future versions, we are considering supporting some of the upcoming JPEG -Part 3 extensions --- principally, variable quantization and the SPIFF file -format. - -As always, speeding things up is of great interest. - -Please send bug reports, offers of help, etc. to jpeg-info@uunet.uu.net. diff --git a/project/jni/jpeg/ansi2knr.1 b/project/jni/jpeg/ansi2knr.1 deleted file mode 100644 index f9ee5a631..000000000 --- a/project/jni/jpeg/ansi2knr.1 +++ /dev/null @@ -1,36 +0,0 @@ -.TH ANSI2KNR 1 "19 Jan 1996" -.SH NAME -ansi2knr \- convert ANSI C to Kernighan & Ritchie C -.SH SYNOPSIS -.I ansi2knr -[--varargs] input_file [output_file] -.SH DESCRIPTION -If no output_file is supplied, output goes to stdout. -.br -There are no error messages. -.sp -.I ansi2knr -recognizes function definitions by seeing a non-keyword identifier at the left -margin, followed by a left parenthesis, with a right parenthesis as the last -character on the line, and with a left brace as the first token on the -following line (ignoring possible intervening comments). It will recognize a -multi-line header provided that no intervening line ends with a left or right -brace or a semicolon. These algorithms ignore whitespace and comments, except -that the function name must be the first thing on the line. -.sp -The following constructs will confuse it: -.br - - Any other construct that starts at the left margin and follows the -above syntax (such as a macro or function call). -.br - - Some macros that tinker with the syntax of the function header. -.sp -The --varargs switch is obsolete, and is recognized only for -backwards compatibility. The present version of -.I ansi2knr -will always attempt to convert a ... argument to va_alist and va_dcl. -.SH AUTHOR -L. Peter Deutsch wrote the original ansi2knr and -continues to maintain the current version; most of the code in the current -version is his work. ansi2knr also includes contributions by Francois -Pinard and Jim Avera . diff --git a/project/jni/jpeg/ansi2knr.c b/project/jni/jpeg/ansi2knr.c deleted file mode 100644 index 4e05fc2d3..000000000 --- a/project/jni/jpeg/ansi2knr.c +++ /dev/null @@ -1,693 +0,0 @@ -/* ansi2knr.c */ -/* Convert ANSI C function definitions to K&R ("traditional C") syntax */ - -/* -ansi2knr is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY. No author or distributor accepts responsibility to anyone for the -consequences of using it or for whether it serves any particular purpose or -works at all, unless he says so in writing. Refer to the GNU General Public -License (the "GPL") for full details. - -Everyone is granted permission to copy, modify and redistribute ansi2knr, -but only under the conditions described in the GPL. A copy of this license -is supposed to have been given to you along with ansi2knr so you can know -your rights and responsibilities. It should be in a file named COPYLEFT. -[In the IJG distribution, the GPL appears below, not in a separate file.] -Among other things, the copyright notice and this notice must be preserved -on all copies. - -We explicitly state here what we believe is already implied by the GPL: if -the ansi2knr program is distributed as a separate set of sources and a -separate executable file which are aggregated on a storage medium together -with another program, this in itself does not bring the other program under -the GPL, nor does the mere fact that such a program or the procedures for -constructing it invoke the ansi2knr executable bring any other part of the -program under the GPL. -*/ - -/* ----------- Here is the GNU GPL file COPYLEFT, referred to above ---------- ------ These terms do NOT apply to the JPEG software itself; see README ------ - - GHOSTSCRIPT GENERAL PUBLIC LICENSE - (Clarified 11 Feb 1988) - - Copyright (C) 1988 Richard M. Stallman - Everyone is permitted to copy and distribute verbatim copies of this - license, but changing it is not allowed. You can also use this wording - to make the terms for other programs. - - The license agreements of most software companies keep you at the -mercy of those companies. By contrast, our general public license is -intended to give everyone the right to share Ghostscript. To make sure -that you get the rights we want you to have, we need to make -restrictions that forbid anyone to deny you these rights or to ask you -to surrender the rights. Hence this license agreement. - - Specifically, we want to make sure that you have the right to give -away copies of Ghostscript, that you receive source code or else can get -it if you want it, that you can change Ghostscript or use pieces of it -in new free programs, and that you know you can do these things. - - To make sure that everyone has such rights, we have to forbid you to -deprive anyone else of these rights. For example, if you distribute -copies of Ghostscript, you must give the recipients all the rights that -you have. You must make sure that they, too, receive or can get the -source code. And you must tell them their rights. - - Also, for our own protection, we must make certain that everyone finds -out that there is no warranty for Ghostscript. If Ghostscript is -modified by someone else and passed on, we want its recipients to know -that what they have is not what we distributed, so that any problems -introduced by others will not reflect on our reputation. - - Therefore we (Richard M. Stallman and the Free Software Foundation, -Inc.) make the following terms which say what you must do to be allowed -to distribute or change Ghostscript. - - - COPYING POLICIES - - 1. You may copy and distribute verbatim copies of Ghostscript source -code as you receive it, in any medium, provided that you conspicuously -and appropriately publish on each copy a valid copyright and license -notice "Copyright (C) 1989 Aladdin Enterprises. All rights reserved. -Distributed by Free Software Foundation, Inc." (or with whatever year is -appropriate); keep intact the notices on all files that refer to this -License Agreement and to the absence of any warranty; and give any other -recipients of the Ghostscript program a copy of this License Agreement -along with the program. You may charge a distribution fee for the -physical act of transferring a copy. - - 2. You may modify your copy or copies of Ghostscript or any portion of -it, and copy and distribute such modifications under the terms of -Paragraph 1 above, provided that you also do the following: - - a) cause the modified files to carry prominent notices stating - that you changed the files and the date of any change; and - - b) cause the whole of any work that you distribute or publish, - that in whole or in part contains or is a derivative of Ghostscript - or any part thereof, to be licensed at no charge to all third - parties on terms identical to those contained in this License - Agreement (except that you may choose to grant more extensive - warranty protection to some or all third parties, at your option). - - c) You may charge a distribution fee for the physical act of - transferring a copy, and you may at your option offer warranty - protection in exchange for a fee. - -Mere aggregation of another unrelated program with this program (or its -derivative) on a volume of a storage or distribution medium does not bring -the other program under the scope of these terms. - - 3. You may copy and distribute Ghostscript (or a portion or derivative -of it, under Paragraph 2) in object code or executable form under the -terms of Paragraphs 1 and 2 above provided that you also do one of the -following: - - a) accompany it with the complete corresponding machine-readable - source code, which must be distributed under the terms of - Paragraphs 1 and 2 above; or, - - b) accompany it with a written offer, valid for at least three - years, to give any third party free (except for a nominal - shipping charge) a complete machine-readable copy of the - corresponding source code, to be distributed under the terms of - Paragraphs 1 and 2 above; or, - - c) accompany it with the information you received as to where the - corresponding source code may be obtained. (This alternative is - allowed only for noncommercial distribution and only if you - received the program in object code or executable form alone.) - -For an executable file, complete source code means all the source code for -all modules it contains; but, as a special exception, it need not include -source code for modules which are standard libraries that accompany the -operating system on which the executable file runs. - - 4. You may not copy, sublicense, distribute or transfer Ghostscript -except as expressly provided under this License Agreement. Any attempt -otherwise to copy, sublicense, distribute or transfer Ghostscript is -void and your rights to use the program under this License agreement -shall be automatically terminated. However, parties who have received -computer software programs from you with this License Agreement will not -have their licenses terminated so long as such parties remain in full -compliance. - - 5. If you wish to incorporate parts of Ghostscript into other free -programs whose distribution conditions are different, write to the Free -Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not -yet worked out a simple rule that can be stated here, but we will often -permit this. We will be guided by the two goals of preserving the free -status of all derivatives of our free software and of promoting the -sharing and reuse of software. - -Your comments and suggestions about our licensing policies and our -software are welcome! Please contact the Free Software Foundation, -Inc., 675 Mass Ave, Cambridge, MA 02139, or call (617) 876-3296. - - NO WARRANTY - - BECAUSE GHOSTSCRIPT IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY -NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT -WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC, RICHARD -M. STALLMAN, ALADDIN ENTERPRISES, L. PETER DEUTSCH, AND/OR OTHER PARTIES -PROVIDE GHOSTSCRIPT "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER -EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE -ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF GHOSTSCRIPT IS WITH -YOU. SHOULD GHOSTSCRIPT PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL -NECESSARY SERVICING, REPAIR OR CORRECTION. - - IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M. -STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., L. PETER DEUTSCH, ALADDIN -ENTERPRISES, AND/OR ANY OTHER PARTY WHO MAY MODIFY AND REDISTRIBUTE -GHOSTSCRIPT AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING -ANY LOST PROFITS, LOST MONIES, OR OTHER SPECIAL, INCIDENTAL OR -CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE -(INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED -INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A FAILURE OF THE -PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) GHOSTSCRIPT, EVEN IF YOU -HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM -BY ANY OTHER PARTY. - --------------------- End of file COPYLEFT ------------------------------ -*/ - -/* - * Usage: - ansi2knr input_file [output_file] - * If no output_file is supplied, output goes to stdout. - * There are no error messages. - * - * ansi2knr recognizes function definitions by seeing a non-keyword - * identifier at the left margin, followed by a left parenthesis, - * with a right parenthesis as the last character on the line, - * and with a left brace as the first token on the following line - * (ignoring possible intervening comments). - * It will recognize a multi-line header provided that no intervening - * line ends with a left or right brace or a semicolon. - * These algorithms ignore whitespace and comments, except that - * the function name must be the first thing on the line. - * The following constructs will confuse it: - * - Any other construct that starts at the left margin and - * follows the above syntax (such as a macro or function call). - * - Some macros that tinker with the syntax of the function header. - */ - -/* - * The original and principal author of ansi2knr is L. Peter Deutsch - * . Other authors are noted in the change history - * that follows (in reverse chronological order): - lpd 96-01-21 added code to cope with not HAVE_CONFIG_H and with - compilers that don't understand void, as suggested by - Tom Lane - lpd 96-01-15 changed to require that the first non-comment token - on the line following a function header be a left brace, - to reduce sensitivity to macros, as suggested by Tom Lane - - lpd 95-06-22 removed #ifndefs whose sole purpose was to define - undefined preprocessor symbols as 0; changed all #ifdefs - for configuration symbols to #ifs - lpd 95-04-05 changed copyright notice to make it clear that - including ansi2knr in a program does not bring the entire - program under the GPL - lpd 94-12-18 added conditionals for systems where ctype macros - don't handle 8-bit characters properly, suggested by - Francois Pinard ; - removed --varargs switch (this is now the default) - lpd 94-10-10 removed CONFIG_BROKETS conditional - lpd 94-07-16 added some conditionals to help GNU `configure', - suggested by Francois Pinard ; - properly erase prototype args in function parameters, - contributed by Jim Avera ; - correct error in writeblanks (it shouldn't erase EOLs) - lpd 89-xx-xx original version - */ - -/* Most of the conditionals here are to make ansi2knr work with */ -/* or without the GNU configure machinery. */ - -#if HAVE_CONFIG_H -# include -#endif - -#include -#include - -#if HAVE_CONFIG_H - -/* - For properly autoconfiguring ansi2knr, use AC_CONFIG_HEADER(config.h). - This will define HAVE_CONFIG_H and so, activate the following lines. - */ - -# if STDC_HEADERS || HAVE_STRING_H -# include -# else -# include -# endif - -#else /* not HAVE_CONFIG_H */ - -/* Otherwise do it the hard way */ - -# ifdef BSD -# include -# else -# ifdef VMS - extern int strlen(), strncmp(); -# else -# include -# endif -# endif - -#endif /* not HAVE_CONFIG_H */ - -#if STDC_HEADERS -# include -#else -/* - malloc and free should be declared in stdlib.h, - but if you've got a K&R compiler, they probably aren't. - */ -# ifdef MSDOS -# include -# else -# ifdef VMS - extern char *malloc(); - extern void free(); -# else - extern char *malloc(); - extern int free(); -# endif -# endif - -#endif - -/* - * The ctype macros don't always handle 8-bit characters correctly. - * Compensate for this here. - */ -#ifdef isascii -# undef HAVE_ISASCII /* just in case */ -# define HAVE_ISASCII 1 -#else -#endif -#if STDC_HEADERS || !HAVE_ISASCII -# define is_ascii(c) 1 -#else -# define is_ascii(c) isascii(c) -#endif - -#define is_space(c) (is_ascii(c) && isspace(c)) -#define is_alpha(c) (is_ascii(c) && isalpha(c)) -#define is_alnum(c) (is_ascii(c) && isalnum(c)) - -/* Scanning macros */ -#define isidchar(ch) (is_alnum(ch) || (ch) == '_') -#define isidfirstchar(ch) (is_alpha(ch) || (ch) == '_') - -/* Forward references */ -char *skipspace(); -int writeblanks(); -int test1(); -int convert1(); - -/* The main program */ -int -main(argc, argv) - int argc; - char *argv[]; -{ FILE *in, *out; -#define bufsize 5000 /* arbitrary size */ - char *buf; - char *line; - char *more; - /* - * In previous versions, ansi2knr recognized a --varargs switch. - * If this switch was supplied, ansi2knr would attempt to convert - * a ... argument to va_alist and va_dcl; if this switch was not - * supplied, ansi2knr would simply drop any such arguments. - * Now, ansi2knr always does this conversion, and we only - * check for this switch for backward compatibility. - */ - int convert_varargs = 1; - - if ( argc > 1 && argv[1][0] == '-' ) - { if ( !strcmp(argv[1], "--varargs") ) - { convert_varargs = 1; - argc--; - argv++; - } - else - { fprintf(stderr, "Unrecognized switch: %s\n", argv[1]); - exit(1); - } - } - switch ( argc ) - { - default: - printf("Usage: ansi2knr input_file [output_file]\n"); - exit(0); - case 2: - out = stdout; - break; - case 3: - out = fopen(argv[2], "w"); - if ( out == NULL ) - { fprintf(stderr, "Cannot open output file %s\n", argv[2]); - exit(1); - } - } - in = fopen(argv[1], "r"); - if ( in == NULL ) - { fprintf(stderr, "Cannot open input file %s\n", argv[1]); - exit(1); - } - fprintf(out, "#line 1 \"%s\"\n", argv[1]); - buf = malloc(bufsize); - line = buf; - while ( fgets(line, (unsigned)(buf + bufsize - line), in) != NULL ) - { -test: line += strlen(line); - switch ( test1(buf) ) - { - case 2: /* a function header */ - convert1(buf, out, 1, convert_varargs); - break; - case 1: /* a function */ - /* Check for a { at the start of the next line. */ - more = ++line; -f: if ( line >= buf + (bufsize - 1) ) /* overflow check */ - goto wl; - if ( fgets(line, (unsigned)(buf + bufsize - line), in) == NULL ) - goto wl; - switch ( *skipspace(more, 1) ) - { - case '{': - /* Definitely a function header. */ - convert1(buf, out, 0, convert_varargs); - fputs(more, out); - break; - case 0: - /* The next line was blank or a comment: */ - /* keep scanning for a non-comment. */ - line += strlen(line); - goto f; - default: - /* buf isn't a function header, but */ - /* more might be. */ - fputs(buf, out); - strcpy(buf, more); - line = buf; - goto test; - } - break; - case -1: /* maybe the start of a function */ - if ( line != buf + (bufsize - 1) ) /* overflow check */ - continue; - /* falls through */ - default: /* not a function */ -wl: fputs(buf, out); - break; - } - line = buf; - } - if ( line != buf ) - fputs(buf, out); - free(buf); - fclose(out); - fclose(in); - return 0; -} - -/* Skip over space and comments, in either direction. */ -char * -skipspace(p, dir) - register char *p; - register int dir; /* 1 for forward, -1 for backward */ -{ for ( ; ; ) - { while ( is_space(*p) ) - p += dir; - if ( !(*p == '/' && p[dir] == '*') ) - break; - p += dir; p += dir; - while ( !(*p == '*' && p[dir] == '/') ) - { if ( *p == 0 ) - return p; /* multi-line comment?? */ - p += dir; - } - p += dir; p += dir; - } - return p; -} - -/* - * Write blanks over part of a string. - * Don't overwrite end-of-line characters. - */ -int -writeblanks(start, end) - char *start; - char *end; -{ char *p; - for ( p = start; p < end; p++ ) - if ( *p != '\r' && *p != '\n' ) - *p = ' '; - return 0; -} - -/* - * Test whether the string in buf is a function definition. - * The string may contain and/or end with a newline. - * Return as follows: - * 0 - definitely not a function definition; - * 1 - definitely a function definition; - * 2 - definitely a function prototype (NOT USED); - * -1 - may be the beginning of a function definition, - * append another line and look again. - * The reason we don't attempt to convert function prototypes is that - * Ghostscript's declaration-generating macros look too much like - * prototypes, and confuse the algorithms. - */ -int -test1(buf) - char *buf; -{ register char *p = buf; - char *bend; - char *endfn; - int contin; - - if ( !isidfirstchar(*p) ) - return 0; /* no name at left margin */ - bend = skipspace(buf + strlen(buf) - 1, -1); - switch ( *bend ) - { - case ';': contin = 0 /*2*/; break; - case ')': contin = 1; break; - case '{': return 0; /* not a function */ - case '}': return 0; /* not a function */ - default: contin = -1; - } - while ( isidchar(*p) ) - p++; - endfn = p; - p = skipspace(p, 1); - if ( *p++ != '(' ) - return 0; /* not a function */ - p = skipspace(p, 1); - if ( *p == ')' ) - return 0; /* no parameters */ - /* Check that the apparent function name isn't a keyword. */ - /* We only need to check for keywords that could be followed */ - /* by a left parenthesis (which, unfortunately, is most of them). */ - { static char *words[] = - { "asm", "auto", "case", "char", "const", "double", - "extern", "float", "for", "if", "int", "long", - "register", "return", "short", "signed", "sizeof", - "static", "switch", "typedef", "unsigned", - "void", "volatile", "while", 0 - }; - char **key = words; - char *kp; - int len = endfn - buf; - - while ( (kp = *key) != 0 ) - { if ( strlen(kp) == len && !strncmp(kp, buf, len) ) - return 0; /* name is a keyword */ - key++; - } - } - return contin; -} - -/* Convert a recognized function definition or header to K&R syntax. */ -int -convert1(buf, out, header, convert_varargs) - char *buf; - FILE *out; - int header; /* Boolean */ - int convert_varargs; /* Boolean */ -{ char *endfn; - register char *p; - char **breaks; - unsigned num_breaks = 2; /* for testing */ - char **btop; - char **bp; - char **ap; - char *vararg = 0; - - /* Pre-ANSI implementations don't agree on whether strchr */ - /* is called strchr or index, so we open-code it here. */ - for ( endfn = buf; *(endfn++) != '('; ) - ; -top: p = endfn; - breaks = (char **)malloc(sizeof(char *) * num_breaks * 2); - if ( breaks == 0 ) - { /* Couldn't allocate break table, give up */ - fprintf(stderr, "Unable to allocate break table!\n"); - fputs(buf, out); - return -1; - } - btop = breaks + num_breaks * 2 - 2; - bp = breaks; - /* Parse the argument list */ - do - { int level = 0; - char *lp = NULL; - char *rp; - char *end = NULL; - - if ( bp >= btop ) - { /* Filled up break table. */ - /* Allocate a bigger one and start over. */ - free((char *)breaks); - num_breaks <<= 1; - goto top; - } - *bp++ = p; - /* Find the end of the argument */ - for ( ; end == NULL; p++ ) - { switch(*p) - { - case ',': - if ( !level ) end = p; - break; - case '(': - if ( !level ) lp = p; - level++; - break; - case ')': - if ( --level < 0 ) end = p; - else rp = p; - break; - case '/': - p = skipspace(p, 1) - 1; - break; - default: - ; - } - } - /* Erase any embedded prototype parameters. */ - if ( lp ) - writeblanks(lp + 1, rp); - p--; /* back up over terminator */ - /* Find the name being declared. */ - /* This is complicated because of procedure and */ - /* array modifiers. */ - for ( ; ; ) - { p = skipspace(p - 1, -1); - switch ( *p ) - { - case ']': /* skip array dimension(s) */ - case ')': /* skip procedure args OR name */ - { int level = 1; - while ( level ) - switch ( *--p ) - { - case ']': case ')': level++; break; - case '[': case '(': level--; break; - case '/': p = skipspace(p, -1) + 1; break; - default: ; - } - } - if ( *p == '(' && *skipspace(p + 1, 1) == '*' ) - { /* We found the name being declared */ - while ( !isidfirstchar(*p) ) - p = skipspace(p, 1) + 1; - goto found; - } - break; - default: - goto found; - } - } -found: if ( *p == '.' && p[-1] == '.' && p[-2] == '.' ) - { if ( convert_varargs ) - { *bp++ = "va_alist"; - vararg = p-2; - } - else - { p++; - if ( bp == breaks + 1 ) /* sole argument */ - writeblanks(breaks[0], p); - else - writeblanks(bp[-1] - 1, p); - bp--; - } - } - else - { while ( isidchar(*p) ) p--; - *bp++ = p+1; - } - p = end; - } - while ( *p++ == ',' ); - *bp = p; - /* Make a special check for 'void' arglist */ - if ( bp == breaks+2 ) - { p = skipspace(breaks[0], 1); - if ( !strncmp(p, "void", 4) ) - { p = skipspace(p+4, 1); - if ( p == breaks[2] - 1 ) - { bp = breaks; /* yup, pretend arglist is empty */ - writeblanks(breaks[0], p + 1); - } - } - } - /* Put out the function name and left parenthesis. */ - p = buf; - while ( p != endfn ) putc(*p, out), p++; - /* Put out the declaration. */ - if ( header ) - { fputs(");", out); - for ( p = breaks[0]; *p; p++ ) - if ( *p == '\r' || *p == '\n' ) - putc(*p, out); - } - else - { for ( ap = breaks+1; ap < bp; ap += 2 ) - { p = *ap; - while ( isidchar(*p) ) - putc(*p, out), p++; - if ( ap < bp - 1 ) - fputs(", ", out); - } - fputs(") ", out); - /* Put out the argument declarations */ - for ( ap = breaks+2; ap <= bp; ap += 2 ) - (*ap)[-1] = ';'; - if ( vararg != 0 ) - { *vararg = 0; - fputs(breaks[0], out); /* any prior args */ - fputs("va_dcl", out); /* the final arg */ - fputs(bp[0], out); - } - else - fputs(breaks[0], out); - } - free((char *)breaks); - return 0; -} diff --git a/project/jni/jpeg/cderror.h b/project/jni/jpeg/cderror.h deleted file mode 100644 index 70435e161..000000000 --- a/project/jni/jpeg/cderror.h +++ /dev/null @@ -1,132 +0,0 @@ -/* - * cderror.h - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file defines the error and message codes for the cjpeg/djpeg - * applications. These strings are not needed as part of the JPEG library - * proper. - * Edit this file to add new codes, or to translate the message strings to - * some other language. - */ - -/* - * To define the enum list of message codes, include this file without - * defining macro JMESSAGE. To create a message string table, include it - * again with a suitable JMESSAGE definition (see jerror.c for an example). - */ -#ifndef JMESSAGE -#ifndef CDERROR_H -#define CDERROR_H -/* First time through, define the enum list */ -#define JMAKE_ENUM_LIST -#else -/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */ -#define JMESSAGE(code,string) -#endif /* CDERROR_H */ -#endif /* JMESSAGE */ - -#ifdef JMAKE_ENUM_LIST - -typedef enum { - -#define JMESSAGE(code,string) code , - -#endif /* JMAKE_ENUM_LIST */ - -JMESSAGE(JMSG_FIRSTADDONCODE=1000, NULL) /* Must be first entry! */ - -#ifdef BMP_SUPPORTED -JMESSAGE(JERR_BMP_BADCMAP, "Unsupported BMP colormap format") -JMESSAGE(JERR_BMP_BADDEPTH, "Only 8- and 24-bit BMP files are supported") -JMESSAGE(JERR_BMP_BADHEADER, "Invalid BMP file: bad header length") -JMESSAGE(JERR_BMP_BADPLANES, "Invalid BMP file: biPlanes not equal to 1") -JMESSAGE(JERR_BMP_COLORSPACE, "BMP output must be grayscale or RGB") -JMESSAGE(JERR_BMP_COMPRESSED, "Sorry, compressed BMPs not yet supported") -JMESSAGE(JERR_BMP_NOT, "Not a BMP file - does not start with BM") -JMESSAGE(JTRC_BMP, "%ux%u 24-bit BMP image") -JMESSAGE(JTRC_BMP_MAPPED, "%ux%u 8-bit colormapped BMP image") -JMESSAGE(JTRC_BMP_OS2, "%ux%u 24-bit OS2 BMP image") -JMESSAGE(JTRC_BMP_OS2_MAPPED, "%ux%u 8-bit colormapped OS2 BMP image") -#endif /* BMP_SUPPORTED */ - -#ifdef GIF_SUPPORTED -JMESSAGE(JERR_GIF_BUG, "GIF output got confused") -JMESSAGE(JERR_GIF_CODESIZE, "Bogus GIF codesize %d") -JMESSAGE(JERR_GIF_COLORSPACE, "GIF output must be grayscale or RGB") -JMESSAGE(JERR_GIF_IMAGENOTFOUND, "Too few images in GIF file") -JMESSAGE(JERR_GIF_NOT, "Not a GIF file") -JMESSAGE(JTRC_GIF, "%ux%ux%d GIF image") -JMESSAGE(JTRC_GIF_BADVERSION, - "Warning: unexpected GIF version number '%c%c%c'") -JMESSAGE(JTRC_GIF_EXTENSION, "Ignoring GIF extension block of type 0x%02x") -JMESSAGE(JTRC_GIF_NONSQUARE, "Caution: nonsquare pixels in input") -JMESSAGE(JWRN_GIF_BADDATA, "Corrupt data in GIF file") -JMESSAGE(JWRN_GIF_CHAR, "Bogus char 0x%02x in GIF file, ignoring") -JMESSAGE(JWRN_GIF_ENDCODE, "Premature end of GIF image") -JMESSAGE(JWRN_GIF_NOMOREDATA, "Ran out of GIF bits") -#endif /* GIF_SUPPORTED */ - -#ifdef PPM_SUPPORTED -JMESSAGE(JERR_PPM_COLORSPACE, "PPM output must be grayscale or RGB") -JMESSAGE(JERR_PPM_NONNUMERIC, "Nonnumeric data in PPM file") -JMESSAGE(JERR_PPM_NOT, "Not a PPM/PGM file") -JMESSAGE(JTRC_PGM, "%ux%u PGM image") -JMESSAGE(JTRC_PGM_TEXT, "%ux%u text PGM image") -JMESSAGE(JTRC_PPM, "%ux%u PPM image") -JMESSAGE(JTRC_PPM_TEXT, "%ux%u text PPM image") -#endif /* PPM_SUPPORTED */ - -#ifdef RLE_SUPPORTED -JMESSAGE(JERR_RLE_BADERROR, "Bogus error code from RLE library") -JMESSAGE(JERR_RLE_COLORSPACE, "RLE output must be grayscale or RGB") -JMESSAGE(JERR_RLE_DIMENSIONS, "Image dimensions (%ux%u) too large for RLE") -JMESSAGE(JERR_RLE_EMPTY, "Empty RLE file") -JMESSAGE(JERR_RLE_EOF, "Premature EOF in RLE header") -JMESSAGE(JERR_RLE_MEM, "Insufficient memory for RLE header") -JMESSAGE(JERR_RLE_NOT, "Not an RLE file") -JMESSAGE(JERR_RLE_TOOMANYCHANNELS, "Cannot handle %d output channels for RLE") -JMESSAGE(JERR_RLE_UNSUPPORTED, "Cannot handle this RLE setup") -JMESSAGE(JTRC_RLE, "%ux%u full-color RLE file") -JMESSAGE(JTRC_RLE_FULLMAP, "%ux%u full-color RLE file with map of length %d") -JMESSAGE(JTRC_RLE_GRAY, "%ux%u grayscale RLE file") -JMESSAGE(JTRC_RLE_MAPGRAY, "%ux%u grayscale RLE file with map of length %d") -JMESSAGE(JTRC_RLE_MAPPED, "%ux%u colormapped RLE file with map of length %d") -#endif /* RLE_SUPPORTED */ - -#ifdef TARGA_SUPPORTED -JMESSAGE(JERR_TGA_BADCMAP, "Unsupported Targa colormap format") -JMESSAGE(JERR_TGA_BADPARMS, "Invalid or unsupported Targa file") -JMESSAGE(JERR_TGA_COLORSPACE, "Targa output must be grayscale or RGB") -JMESSAGE(JTRC_TGA, "%ux%u RGB Targa image") -JMESSAGE(JTRC_TGA_GRAY, "%ux%u grayscale Targa image") -JMESSAGE(JTRC_TGA_MAPPED, "%ux%u colormapped Targa image") -#else -JMESSAGE(JERR_TGA_NOTCOMP, "Targa support was not compiled") -#endif /* TARGA_SUPPORTED */ - -JMESSAGE(JERR_BAD_CMAP_FILE, - "Color map file is invalid or of unsupported format") -JMESSAGE(JERR_TOO_MANY_COLORS, - "Output file format cannot handle %d colormap entries") -JMESSAGE(JERR_UNGETC_FAILED, "ungetc failed") -#ifdef TARGA_SUPPORTED -JMESSAGE(JERR_UNKNOWN_FORMAT, - "Unrecognized input file format --- perhaps you need -targa") -#else -JMESSAGE(JERR_UNKNOWN_FORMAT, "Unrecognized input file format") -#endif -JMESSAGE(JERR_UNSUPPORTED_FORMAT, "Unsupported output file format") - -#ifdef JMAKE_ENUM_LIST - - JMSG_LASTADDONCODE -} ADDON_MESSAGE_CODE; - -#undef JMAKE_ENUM_LIST -#endif /* JMAKE_ENUM_LIST */ - -/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */ -#undef JMESSAGE diff --git a/project/jni/jpeg/cdjpeg.c b/project/jni/jpeg/cdjpeg.c deleted file mode 100644 index b6250ff97..000000000 --- a/project/jni/jpeg/cdjpeg.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * cdjpeg.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains common support routines used by the IJG application - * programs (cjpeg, djpeg, jpegtran). - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ -#include /* to declare isupper(), tolower() */ -#ifdef NEED_SIGNAL_CATCHER -#include /* to declare signal() */ -#endif -#ifdef USE_SETMODE -#include /* to declare setmode()'s parameter macros */ -/* If you have setmode() but not , just delete this line: */ -#include /* to declare setmode() */ -#endif - - -/* - * Signal catcher to ensure that temporary files are removed before aborting. - * NB: for Amiga Manx C this is actually a global routine named _abort(); - * we put "#define signal_catcher _abort" in jconfig.h. Talk about bogus... - */ - -#ifdef NEED_SIGNAL_CATCHER - -static j_common_ptr sig_cinfo; - -void /* must be global for Manx C */ -signal_catcher (int signum) -{ - if (sig_cinfo != NULL) { - if (sig_cinfo->err != NULL) /* turn off trace output */ - sig_cinfo->err->trace_level = 0; - jpeg_destroy(sig_cinfo); /* clean up memory allocation & temp files */ - } - exit(EXIT_FAILURE); -} - - -GLOBAL(void) -enable_signal_catcher (j_common_ptr cinfo) -{ - sig_cinfo = cinfo; -#ifdef SIGINT /* not all systems have SIGINT */ - signal(SIGINT, signal_catcher); -#endif -#ifdef SIGTERM /* not all systems have SIGTERM */ - signal(SIGTERM, signal_catcher); -#endif -} - -#endif - - -/* - * Optional progress monitor: display a percent-done figure on stderr. - */ - -#ifdef PROGRESS_REPORT - -METHODDEF(void) -progress_monitor (j_common_ptr cinfo) -{ - cd_progress_ptr prog = (cd_progress_ptr) cinfo->progress; - int total_passes = prog->pub.total_passes + prog->total_extra_passes; - int percent_done = (int) (prog->pub.pass_counter*100L/prog->pub.pass_limit); - - if (percent_done != prog->percent_done) { - prog->percent_done = percent_done; - if (total_passes > 1) { - fprintf(stderr, "\rPass %d/%d: %3d%% ", - prog->pub.completed_passes + prog->completed_extra_passes + 1, - total_passes, percent_done); - } else { - fprintf(stderr, "\r %3d%% ", percent_done); - } - fflush(stderr); - } -} - - -GLOBAL(void) -start_progress_monitor (j_common_ptr cinfo, cd_progress_ptr progress) -{ - /* Enable progress display, unless trace output is on */ - if (cinfo->err->trace_level == 0) { - progress->pub.progress_monitor = progress_monitor; - progress->completed_extra_passes = 0; - progress->total_extra_passes = 0; - progress->percent_done = -1; - cinfo->progress = &progress->pub; - } -} - - -GLOBAL(void) -end_progress_monitor (j_common_ptr cinfo) -{ - /* Clear away progress display */ - if (cinfo->err->trace_level == 0) { - fprintf(stderr, "\r \r"); - fflush(stderr); - } -} - -#endif - - -/* - * Case-insensitive matching of possibly-abbreviated keyword switches. - * keyword is the constant keyword (must be lower case already), - * minchars is length of minimum legal abbreviation. - */ - -GLOBAL(boolean) -keymatch (char * arg, const char * keyword, int minchars) -{ - register int ca, ck; - register int nmatched = 0; - - while ((ca = *arg++) != '\0') { - if ((ck = *keyword++) == '\0') - return FALSE; /* arg longer than keyword, no good */ - if (isupper(ca)) /* force arg to lcase (assume ck is already) */ - ca = tolower(ca); - if (ca != ck) - return FALSE; /* no good */ - nmatched++; /* count matched characters */ - } - /* reached end of argument; fail if it's too short for unique abbrev */ - if (nmatched < minchars) - return FALSE; - return TRUE; /* A-OK */ -} - - -/* - * Routines to establish binary I/O mode for stdin and stdout. - * Non-Unix systems often require some hacking to get out of text mode. - */ - -GLOBAL(FILE *) -read_stdin (void) -{ - FILE * input_file = stdin; - -#ifdef USE_SETMODE /* need to hack file mode? */ - setmode(fileno(stdin), O_BINARY); -#endif -#ifdef USE_FDOPEN /* need to re-open in binary mode? */ - if ((input_file = fdopen(fileno(stdin), READ_BINARY)) == NULL) { - fprintf(stderr, "Cannot reopen stdin\n"); - exit(EXIT_FAILURE); - } -#endif - return input_file; -} - - -GLOBAL(FILE *) -write_stdout (void) -{ - FILE * output_file = stdout; - -#ifdef USE_SETMODE /* need to hack file mode? */ - setmode(fileno(stdout), O_BINARY); -#endif -#ifdef USE_FDOPEN /* need to re-open in binary mode? */ - if ((output_file = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) { - fprintf(stderr, "Cannot reopen stdout\n"); - exit(EXIT_FAILURE); - } -#endif - return output_file; -} diff --git a/project/jni/jpeg/cdjpeg.h b/project/jni/jpeg/cdjpeg.h deleted file mode 100644 index 2b387b6e5..000000000 --- a/project/jni/jpeg/cdjpeg.h +++ /dev/null @@ -1,184 +0,0 @@ -/* - * cdjpeg.h - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains common declarations for the sample applications - * cjpeg and djpeg. It is NOT used by the core JPEG library. - */ - -#define JPEG_CJPEG_DJPEG /* define proper options in jconfig.h */ -#define JPEG_INTERNAL_OPTIONS /* cjpeg.c,djpeg.c need to see xxx_SUPPORTED */ -#include "jinclude.h" -#include "jpeglib.h" -#include "jerror.h" /* get library error codes too */ -#include "cderror.h" /* get application-specific error codes */ - - -/* - * Object interface for cjpeg's source file decoding modules - */ - -typedef struct cjpeg_source_struct * cjpeg_source_ptr; - -struct cjpeg_source_struct { - JMETHOD(void, start_input, (j_compress_ptr cinfo, - cjpeg_source_ptr sinfo)); - JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, - cjpeg_source_ptr sinfo)); - JMETHOD(void, finish_input, (j_compress_ptr cinfo, - cjpeg_source_ptr sinfo)); - - FILE *input_file; - - JSAMPARRAY buffer; - JDIMENSION buffer_height; -}; - - -/* - * Object interface for djpeg's output file encoding modules - */ - -typedef struct djpeg_dest_struct * djpeg_dest_ptr; - -struct djpeg_dest_struct { - /* start_output is called after jpeg_start_decompress finishes. - * The color map will be ready at this time, if one is needed. - */ - JMETHOD(void, start_output, (j_decompress_ptr cinfo, - djpeg_dest_ptr dinfo)); - /* Emit the specified number of pixel rows from the buffer. */ - JMETHOD(void, put_pixel_rows, (j_decompress_ptr cinfo, - djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied)); - /* Finish up at the end of the image. */ - JMETHOD(void, finish_output, (j_decompress_ptr cinfo, - djpeg_dest_ptr dinfo)); - - /* Target file spec; filled in by djpeg.c after object is created. */ - FILE * output_file; - - /* Output pixel-row buffer. Created by module init or start_output. - * Width is cinfo->output_width * cinfo->output_components; - * height is buffer_height. - */ - JSAMPARRAY buffer; - JDIMENSION buffer_height; -}; - - -/* - * cjpeg/djpeg may need to perform extra passes to convert to or from - * the source/destination file format. The JPEG library does not know - * about these passes, but we'd like them to be counted by the progress - * monitor. We use an expanded progress monitor object to hold the - * additional pass count. - */ - -struct cdjpeg_progress_mgr { - struct jpeg_progress_mgr pub; /* fields known to JPEG library */ - int completed_extra_passes; /* extra passes completed */ - int total_extra_passes; /* total extra */ - /* last printed percentage stored here to avoid multiple printouts */ - int percent_done; -}; - -typedef struct cdjpeg_progress_mgr * cd_progress_ptr; - - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jinit_read_bmp jIRdBMP -#define jinit_write_bmp jIWrBMP -#define jinit_read_gif jIRdGIF -#define jinit_write_gif jIWrGIF -#define jinit_read_ppm jIRdPPM -#define jinit_write_ppm jIWrPPM -#define jinit_read_rle jIRdRLE -#define jinit_write_rle jIWrRLE -#define jinit_read_targa jIRdTarga -#define jinit_write_targa jIWrTarga -#define read_quant_tables RdQTables -#define read_scan_script RdScnScript -#define set_quant_slots SetQSlots -#define set_sample_factors SetSFacts -#define read_color_map RdCMap -#define enable_signal_catcher EnSigCatcher -#define start_progress_monitor StProgMon -#define end_progress_monitor EnProgMon -#define read_stdin RdStdin -#define write_stdout WrStdout -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - -/* Module selection routines for I/O modules. */ - -EXTERN(cjpeg_source_ptr) jinit_read_bmp JPP((j_compress_ptr cinfo)); -EXTERN(djpeg_dest_ptr) jinit_write_bmp JPP((j_decompress_ptr cinfo, - boolean is_os2)); -EXTERN(cjpeg_source_ptr) jinit_read_gif JPP((j_compress_ptr cinfo)); -EXTERN(djpeg_dest_ptr) jinit_write_gif JPP((j_decompress_ptr cinfo)); -EXTERN(cjpeg_source_ptr) jinit_read_ppm JPP((j_compress_ptr cinfo)); -EXTERN(djpeg_dest_ptr) jinit_write_ppm JPP((j_decompress_ptr cinfo)); -EXTERN(cjpeg_source_ptr) jinit_read_rle JPP((j_compress_ptr cinfo)); -EXTERN(djpeg_dest_ptr) jinit_write_rle JPP((j_decompress_ptr cinfo)); -EXTERN(cjpeg_source_ptr) jinit_read_targa JPP((j_compress_ptr cinfo)); -EXTERN(djpeg_dest_ptr) jinit_write_targa JPP((j_decompress_ptr cinfo)); - -/* cjpeg support routines (in rdswitch.c) */ - -EXTERN(boolean) read_quant_tables JPP((j_compress_ptr cinfo, char * filename, - int scale_factor, boolean force_baseline)); -EXTERN(boolean) read_scan_script JPP((j_compress_ptr cinfo, char * filename)); -EXTERN(boolean) set_quant_slots JPP((j_compress_ptr cinfo, char *arg)); -EXTERN(boolean) set_sample_factors JPP((j_compress_ptr cinfo, char *arg)); - -/* djpeg support routines (in rdcolmap.c) */ - -EXTERN(void) read_color_map JPP((j_decompress_ptr cinfo, FILE * infile)); - -/* common support routines (in cdjpeg.c) */ - -EXTERN(void) enable_signal_catcher JPP((j_common_ptr cinfo)); -EXTERN(void) start_progress_monitor JPP((j_common_ptr cinfo, - cd_progress_ptr progress)); -EXTERN(void) end_progress_monitor JPP((j_common_ptr cinfo)); -EXTERN(boolean) keymatch JPP((char * arg, const char * keyword, int minchars)); -EXTERN(FILE *) read_stdin JPP((void)); -EXTERN(FILE *) write_stdout JPP((void)); - -/* miscellaneous useful macros */ - -#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ -#define READ_BINARY "r" -#define WRITE_BINARY "w" -#else -#ifdef VMS /* VMS is very nonstandard */ -#define READ_BINARY "rb", "ctx=stm" -#define WRITE_BINARY "wb", "ctx=stm" -#else /* standard ANSI-compliant case */ -#define READ_BINARY "rb" -#define WRITE_BINARY "wb" -#endif -#endif - -#ifndef EXIT_FAILURE /* define exit() codes if not provided */ -#define EXIT_FAILURE 1 -#endif -#ifndef EXIT_SUCCESS -#ifdef VMS -#define EXIT_SUCCESS 1 /* VMS is very nonstandard */ -#else -#define EXIT_SUCCESS 0 -#endif -#endif -#ifndef EXIT_WARNING -#ifdef VMS -#define EXIT_WARNING 1 /* VMS is very nonstandard */ -#else -#define EXIT_WARNING 2 -#endif -#endif diff --git a/project/jni/jpeg/change.log b/project/jni/jpeg/change.log deleted file mode 100644 index 74102c0db..000000000 --- a/project/jni/jpeg/change.log +++ /dev/null @@ -1,217 +0,0 @@ -CHANGE LOG for Independent JPEG Group's JPEG software - - -Version 6b 27-Mar-1998 ------------------------ - -jpegtran has new features for lossless image transformations (rotation -and flipping) as well as "lossless" reduction to grayscale. - -jpegtran now copies comments by default; it has a -copy switch to enable -copying all APPn blocks as well, or to suppress comments. (Formerly it -always suppressed comments and APPn blocks.) jpegtran now also preserves -JFIF version and resolution information. - -New decompressor library feature: COM and APPn markers found in the input -file can be saved in memory for later use by the application. (Before, -you had to code this up yourself with a custom marker processor.) - -There is an unused field "void * client_data" now in compress and decompress -parameter structs; this may be useful in some applications. - -JFIF version number information is now saved by the decoder and accepted by -the encoder. jpegtran uses this to copy the source file's version number, -to ensure "jpegtran -copy all" won't create bogus files that contain JFXX -extensions but claim to be version 1.01. Applications that generate their -own JFXX extension markers also (finally) have a supported way to cause the -encoder to emit JFIF version number 1.02. - -djpeg's trace mode reports JFIF 1.02 thumbnail images as such, rather -than as unknown APP0 markers. - -In -verbose mode, djpeg and rdjpgcom will try to print the contents of -APP12 markers as text. Some digital cameras store useful text information -in APP12 markers. - -Handling of truncated data streams is more robust: blocks beyond the one in -which the error occurs will be output as uniform gray, or left unchanged -if decoding a progressive JPEG. The appearance no longer depends on the -Huffman tables being used. - -Huffman tables are checked for validity much more carefully than before. - -To avoid the Unisys LZW patent, djpeg's GIF output capability has been -changed to produce "uncompressed GIFs", and cjpeg's GIF input capability -has been removed altogether. We're not happy about it either, but there -seems to be no good alternative. - -The configure script now supports building libjpeg as a shared library -on many flavors of Unix (all the ones that GNU libtool knows how to -build shared libraries for). Use "./configure --enable-shared" to -try this out. - -New jconfig file and makefiles for Microsoft Visual C++ and Developer Studio. -Also, a jconfig file and a build script for Metrowerks CodeWarrior -on Apple Macintosh. makefile.dj has been updated for DJGPP v2, and there -are miscellaneous other minor improvements in the makefiles. - -jmemmac.c now knows how to create temporary files following Mac System 7 -conventions. - -djpeg's -map switch is now able to read raw-format PPM files reliably. - -cjpeg -progressive -restart no longer generates any unnecessary DRI markers. - -Multiple calls to jpeg_simple_progression for a single JPEG object -no longer leak memory. - - -Version 6a 7-Feb-96 --------------------- - -Library initialization sequence modified to detect version mismatches -and struct field packing mismatches between library and calling application. -This change requires applications to be recompiled, but does not require -any application source code change. - -All routine declarations changed to the style "GLOBAL(type) name ...", -that is, GLOBAL, LOCAL, METHODDEF, EXTERN are now macros taking the -routine's return type as an argument. This makes it possible to add -Microsoft-style linkage keywords to all the routines by changing just -these macros. Note that any application code that was using these macros -will have to be changed. - -DCT coefficient quantization tables are now stored in normal array order -rather than zigzag order. Application code that calls jpeg_add_quant_table, -or otherwise manipulates quantization tables directly, will need to be -changed. If you need to make such code work with either older or newer -versions of the library, a test like "#if JPEG_LIB_VERSION >= 61" is -recommended. - -djpeg's trace capability now dumps DQT tables in natural order, not zigzag -order. This allows the trace output to be made into a "-qtables" file -more easily. - -New system-dependent memory manager module for use on Apple Macintosh. - -Fix bug in cjpeg's -smooth option: last one or two scanlines would be -duplicates of the prior line unless the image height mod 16 was 1 or 2. - -Repair minor problems in VMS, BCC, MC6 makefiles. - -New configure script based on latest GNU Autoconf. - -Correct the list of include files needed by MetroWerks C for ccommand(). - -Numerous small documentation updates. - - -Version 6 2-Aug-95 -------------------- - -Progressive JPEG support: library can read and write full progressive JPEG -files. A "buffered image" mode supports incremental decoding for on-the-fly -display of progressive images. Simply recompiling an existing IJG-v5-based -decoder with v6 should allow it to read progressive files, though of course -without any special progressive display. - -New "jpegtran" application performs lossless transcoding between different -JPEG formats; primarily, it can be used to convert baseline to progressive -JPEG and vice versa. In support of jpegtran, the library now allows lossless -reading and writing of JPEG files as DCT coefficient arrays. This ability -may be of use in other applications. - -Notes for programmers: -* We changed jpeg_start_decompress() to be able to suspend; this makes all -decoding modes available to suspending-input applications. However, -existing applications that use suspending input will need to be changed -to check the return value from jpeg_start_decompress(). You don't need to -do anything if you don't use a suspending data source. -* We changed the interface to the virtual array routines: access_virt_array -routines now take a count of the number of rows to access this time. The -last parameter to request_virt_array routines is now interpreted as the -maximum number of rows that may be accessed at once, but not necessarily -the height of every access. - - -Version 5b 15-Mar-95 ---------------------- - -Correct bugs with grayscale images having v_samp_factor > 1. - -jpeg_write_raw_data() now supports output suspension. - -Correct bugs in "configure" script for case of compiling in -a directory other than the one containing the source files. - -Repair bug in jquant1.c: sometimes didn't use as many colors as it could. - -Borland C makefile and jconfig file work under either MS-DOS or OS/2. - -Miscellaneous improvements to documentation. - - -Version 5a 7-Dec-94 --------------------- - -Changed color conversion roundoff behavior so that grayscale values are -represented exactly. (This causes test image files to change.) - -Make ordered dither use 16x16 instead of 4x4 pattern for a small quality -improvement. - -New configure script based on latest GNU Autoconf. -Fix configure script to handle CFLAGS correctly. -Rename *.auto files to *.cfg, so that configure script still works if -file names have been truncated for DOS. - -Fix bug in rdbmp.c: didn't allow for extra data between header and image. - -Modify rdppm.c/wrppm.c to handle 2-byte raw PPM/PGM formats for 12-bit data. - -Fix several bugs in rdrle.c. - -NEED_SHORT_EXTERNAL_NAMES option was broken. - -Revise jerror.h/jerror.c for more flexibility in message table. - -Repair oversight in jmemname.c NO_MKTEMP case: file could be there -but unreadable. - - -Version 5 24-Sep-94 --------------------- - -Version 5 represents a nearly complete redesign and rewrite of the IJG -software. Major user-visible changes include: - * Automatic configuration simplifies installation for most Unix systems. - * A range of speed vs. image quality tradeoffs are supported. - This includes resizing of an image during decompression: scaling down - by a factor of 1/2, 1/4, or 1/8 is handled very efficiently. - * New programs rdjpgcom and wrjpgcom allow insertion and extraction - of text comments in a JPEG file. - -The application programmer's interface to the library has changed completely. -Notable improvements include: - * We have eliminated the use of callback routines for handling the - uncompressed image data. The application now sees the library as a - set of routines that it calls to read or write image data on a - scanline-by-scanline basis. - * The application image data is represented in a conventional interleaved- - pixel format, rather than as a separate array for each color channel. - This can save a copying step in many programs. - * The handling of compressed data has been cleaned up: the application can - supply routines to source or sink the compressed data. It is possible to - suspend processing on source/sink buffer overrun, although this is not - supported in all operating modes. - * All static state has been eliminated from the library, so that multiple - instances of compression or decompression can be active concurrently. - * JPEG abbreviated datastream formats are supported, ie, quantization and - Huffman tables can be stored separately from the image data. - * And not only that, but the documentation of the library has improved - considerably! - - -The last widely used release before the version 5 rewrite was version 4A of -18-Feb-93. Change logs before that point have been discarded, since they -are not of much interest after the rewrite. diff --git a/project/jni/jpeg/cjpeg.1 b/project/jni/jpeg/cjpeg.1 deleted file mode 100644 index d175a961c..000000000 --- a/project/jni/jpeg/cjpeg.1 +++ /dev/null @@ -1,292 +0,0 @@ -.TH CJPEG 1 "20 March 1998" -.SH NAME -cjpeg \- compress an image file to a JPEG file -.SH SYNOPSIS -.B cjpeg -[ -.I options -] -[ -.I filename -] -.LP -.SH DESCRIPTION -.LP -.B cjpeg -compresses the named image file, or the standard input if no file is -named, and produces a JPEG/JFIF file on the standard output. -The currently supported input file formats are: PPM (PBMPLUS color -format), PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster -Toolkit format). (RLE is supported only if the URT library is available.) -.SH OPTIONS -All switch names may be abbreviated; for example, -.B \-grayscale -may be written -.B \-gray -or -.BR \-gr . -Most of the "basic" switches can be abbreviated to as little as one letter. -Upper and lower case are equivalent (thus -.B \-BMP -is the same as -.BR \-bmp ). -British spellings are also accepted (e.g., -.BR \-greyscale ), -though for brevity these are not mentioned below. -.PP -The basic switches are: -.TP -.BI \-quality " N" -Scale quantization tables to adjust image quality. Quality is 0 (worst) to -100 (best); default is 75. (See below for more info.) -.TP -.B \-grayscale -Create monochrome JPEG file from color input. Be sure to use this switch when -compressing a grayscale BMP file, because -.B cjpeg -isn't bright enough to notice whether a BMP file uses only shades of gray. -By saying -.BR \-grayscale , -you'll get a smaller JPEG file that takes less time to process. -.TP -.B \-optimize -Perform optimization of entropy encoding parameters. Without this, default -encoding parameters are used. -.B \-optimize -usually makes the JPEG file a little smaller, but -.B cjpeg -runs somewhat slower and needs much more memory. Image quality and speed of -decompression are unaffected by -.BR \-optimize . -.TP -.B \-progressive -Create progressive JPEG file (see below). -.TP -.B \-targa -Input file is Targa format. Targa files that contain an "identification" -field will not be automatically recognized by -.BR cjpeg ; -for such files you must specify -.B \-targa -to make -.B cjpeg -treat the input as Targa format. -For most Targa files, you won't need this switch. -.PP -The -.B \-quality -switch lets you trade off compressed file size against quality of the -reconstructed image: the higher the quality setting, the larger the JPEG file, -and the closer the output image will be to the original input. Normally you -want to use the lowest quality setting (smallest file) that decompresses into -something visually indistinguishable from the original image. For this -purpose the quality setting should be between 50 and 95; the default of 75 is -often about right. If you see defects at -.B \-quality -75, then go up 5 or 10 counts at a time until you are happy with the output -image. (The optimal setting will vary from one image to another.) -.PP -.B \-quality -100 will generate a quantization table of all 1's, minimizing loss in the -quantization step (but there is still information loss in subsampling, as well -as roundoff error). This setting is mainly of interest for experimental -purposes. Quality values above about 95 are -.B not -recommended for normal use; the compressed file size goes up dramatically for -hardly any gain in output image quality. -.PP -In the other direction, quality values below 50 will produce very small files -of low image quality. Settings around 5 to 10 might be useful in preparing an -index of a large image library, for example. Try -.B \-quality -2 (or so) for some amusing Cubist effects. (Note: quality -values below about 25 generate 2-byte quantization tables, which are -considered optional in the JPEG standard. -.B cjpeg -emits a warning message when you give such a quality value, because some -other JPEG programs may be unable to decode the resulting file. Use -.B \-baseline -if you need to ensure compatibility at low quality values.) -.PP -The -.B \-progressive -switch creates a "progressive JPEG" file. In this type of JPEG file, the data -is stored in multiple scans of increasing quality. If the file is being -transmitted over a slow communications link, the decoder can use the first -scan to display a low-quality image very quickly, and can then improve the -display with each subsequent scan. The final image is exactly equivalent to a -standard JPEG file of the same quality setting, and the total file size is -about the same --- often a little smaller. -.B Caution: -progressive JPEG is not yet widely implemented, so many decoders will be -unable to view a progressive JPEG file at all. -.PP -Switches for advanced users: -.TP -.B \-dct int -Use integer DCT method (default). -.TP -.B \-dct fast -Use fast integer DCT (less accurate). -.TP -.B \-dct float -Use floating-point DCT method. -The float method is very slightly more accurate than the int method, but is -much slower unless your machine has very fast floating-point hardware. Also -note that results of the floating-point method may vary slightly across -machines, while the integer methods should give the same results everywhere. -The fast integer method is much less accurate than the other two. -.TP -.BI \-restart " N" -Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is -attached to the number. -.B \-restart 0 -(the default) means no restart markers. -.TP -.BI \-smooth " N" -Smooth the input image to eliminate dithering noise. N, ranging from 1 to -100, indicates the strength of smoothing. 0 (the default) means no smoothing. -.TP -.BI \-maxmemory " N" -Set limit for amount of memory to use in processing large images. Value is -in thousands of bytes, or millions of bytes if "M" is attached to the -number. For example, -.B \-max 4m -selects 4000000 bytes. If more space is needed, temporary files will be used. -.TP -.BI \-outfile " name" -Send output image to the named file, not to standard output. -.TP -.B \-verbose -Enable debug printout. More -.BR \-v 's -give more output. Also, version information is printed at startup. -.TP -.B \-debug -Same as -.BR \-verbose . -.PP -The -.B \-restart -option inserts extra markers that allow a JPEG decoder to resynchronize after -a transmission error. Without restart markers, any damage to a compressed -file will usually ruin the image from the point of the error to the end of the -image; with restart markers, the damage is usually confined to the portion of -the image up to the next restart marker. Of course, the restart markers -occupy extra space. We recommend -.B \-restart 1 -for images that will be transmitted across unreliable networks such as Usenet. -.PP -The -.B \-smooth -option filters the input to eliminate fine-scale noise. This is often useful -when converting dithered images to JPEG: a moderate smoothing factor of 10 to -50 gets rid of dithering patterns in the input file, resulting in a smaller -JPEG file and a better-looking image. Too large a smoothing factor will -visibly blur the image, however. -.PP -Switches for wizards: -.TP -.B \-baseline -Force baseline-compatible quantization tables to be generated. This clamps -quantization values to 8 bits even at low quality settings. (This switch is -poorly named, since it does not ensure that the output is actually baseline -JPEG. For example, you can use -.B \-baseline -and -.B \-progressive -together.) -.TP -.BI \-qtables " file" -Use the quantization tables given in the specified text file. -.TP -.BI \-qslots " N[,...]" -Select which quantization table to use for each color component. -.TP -.BI \-sample " HxV[,...]" -Set JPEG sampling factors for each color component. -.TP -.BI \-scans " file" -Use the scan script given in the specified text file. -.PP -The "wizard" switches are intended for experimentation with JPEG. If you -don't know what you are doing, \fBdon't use them\fR. These switches are -documented further in the file wizard.doc. -.SH EXAMPLES -.LP -This example compresses the PPM file foo.ppm with a quality factor of -60 and saves the output as foo.jpg: -.IP -.B cjpeg \-quality -.I 60 foo.ppm -.B > -.I foo.jpg -.SH HINTS -Color GIF files are not the ideal input for JPEG; JPEG is really intended for -compressing full-color (24-bit) images. In particular, don't try to convert -cartoons, line drawings, and other images that have only a few distinct -colors. GIF works great on these, JPEG does not. If you want to convert a -GIF to JPEG, you should experiment with -.BR cjpeg 's -.B \-quality -and -.B \-smooth -options to get a satisfactory conversion. -.B \-smooth 10 -or so is often helpful. -.PP -Avoid running an image through a series of JPEG compression/decompression -cycles. Image quality loss will accumulate; after ten or so cycles the image -may be noticeably worse than it was after one cycle. It's best to use a -lossless format while manipulating an image, then convert to JPEG format when -you are ready to file the image away. -.PP -The -.B \-optimize -option to -.B cjpeg -is worth using when you are making a "final" version for posting or archiving. -It's also a win when you are using low quality settings to make very small -JPEG files; the percentage improvement is often a lot more than it is on -larger files. (At present, -.B \-optimize -mode is always selected when generating progressive JPEG files.) -.SH ENVIRONMENT -.TP -.B JPEGMEM -If this environment variable is set, its value is the default memory limit. -The value is specified as described for the -.B \-maxmemory -switch. -.B JPEGMEM -overrides the default value specified when the program was compiled, and -itself is overridden by an explicit -.BR \-maxmemory . -.SH SEE ALSO -.BR djpeg (1), -.BR jpegtran (1), -.BR rdjpgcom (1), -.BR wrjpgcom (1) -.br -.BR ppm (5), -.BR pgm (5) -.br -Wallace, Gregory K. "The JPEG Still Picture Compression Standard", -Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44. -.SH AUTHOR -Independent JPEG Group -.SH BUGS -Arithmetic coding is not supported for legal reasons. -.PP -GIF input files are no longer supported, to avoid the Unisys LZW patent. -Use a Unisys-licensed program if you need to read a GIF file. (Conversion -of GIF files to JPEG is usually a bad idea anyway.) -.PP -Not all variants of BMP and Targa file formats are supported. -.PP -The -.B \-targa -switch is not a bug, it's a feature. (It would be a bug if the Targa format -designers had not been clueless.) -.PP -Still not as fast as we'd like. diff --git a/project/jni/jpeg/cjpeg.c b/project/jni/jpeg/cjpeg.c deleted file mode 100644 index f2a929f0c..000000000 --- a/project/jni/jpeg/cjpeg.c +++ /dev/null @@ -1,606 +0,0 @@ -/* - * cjpeg.c - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a command-line user interface for the JPEG compressor. - * It should work on any system with Unix- or MS-DOS-style command lines. - * - * Two different command line styles are permitted, depending on the - * compile-time switch TWO_FILE_COMMANDLINE: - * cjpeg [options] inputfile outputfile - * cjpeg [options] [inputfile] - * In the second style, output is always to standard output, which you'd - * normally redirect to a file or pipe to some other program. Input is - * either from a named file or from standard input (typically redirected). - * The second style is convenient on Unix but is unhelpful on systems that - * don't support pipes. Also, you MUST use the first style if your system - * doesn't do binary I/O to stdin/stdout. - * To simplify script writing, the "-outfile" switch is provided. The syntax - * cjpeg [options] -outfile outputfile inputfile - * works regardless of which command line style is used. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ -#include "jversion.h" /* for version message */ - -#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ -#ifdef __MWERKS__ -#include /* Metrowerks needs this */ -#include /* ... and this */ -#endif -#ifdef THINK_C -#include /* Think declares it here */ -#endif -#endif - - -/* Create the add-on message string table. */ - -#define JMESSAGE(code,string) string , - -static const char * const cdjpeg_message_table[] = { -#include "cderror.h" - NULL -}; - - -/* - * This routine determines what format the input file is, - * and selects the appropriate input-reading module. - * - * To determine which family of input formats the file belongs to, - * we may look only at the first byte of the file, since C does not - * guarantee that more than one character can be pushed back with ungetc. - * Looking at additional bytes would require one of these approaches: - * 1) assume we can fseek() the input file (fails for piped input); - * 2) assume we can push back more than one character (works in - * some C implementations, but unportable); - * 3) provide our own buffering (breaks input readers that want to use - * stdio directly, such as the RLE library); - * or 4) don't put back the data, and modify the input_init methods to assume - * they start reading after the start of file (also breaks RLE library). - * #1 is attractive for MS-DOS but is untenable on Unix. - * - * The most portable solution for file types that can't be identified by their - * first byte is to make the user tell us what they are. This is also the - * only approach for "raw" file types that contain only arbitrary values. - * We presently apply this method for Targa files. Most of the time Targa - * files start with 0x00, so we recognize that case. Potentially, however, - * a Targa file could start with any byte value (byte 0 is the length of the - * seldom-used ID field), so we provide a switch to force Targa input mode. - */ - -static boolean is_targa; /* records user -targa switch */ - - -LOCAL(cjpeg_source_ptr) -select_file_type (j_compress_ptr cinfo, FILE * infile) -{ - int c; - - if (is_targa) { -#ifdef TARGA_SUPPORTED - return jinit_read_targa(cinfo); -#else - ERREXIT(cinfo, JERR_TGA_NOTCOMP); -#endif - } - - if ((c = getc(infile)) == EOF) - ERREXIT(cinfo, JERR_INPUT_EMPTY); - if (ungetc(c, infile) == EOF) - ERREXIT(cinfo, JERR_UNGETC_FAILED); - - switch (c) { -#ifdef BMP_SUPPORTED - case 'B': - return jinit_read_bmp(cinfo); -#endif -#ifdef GIF_SUPPORTED - case 'G': - return jinit_read_gif(cinfo); -#endif -#ifdef PPM_SUPPORTED - case 'P': - return jinit_read_ppm(cinfo); -#endif -#ifdef RLE_SUPPORTED - case 'R': - return jinit_read_rle(cinfo); -#endif -#ifdef TARGA_SUPPORTED - case 0x00: - return jinit_read_targa(cinfo); -#endif - default: - ERREXIT(cinfo, JERR_UNKNOWN_FORMAT); - break; - } - - return NULL; /* suppress compiler warnings */ -} - - -/* - * Argument-parsing code. - * The switch parser is designed to be useful with DOS-style command line - * syntax, ie, intermixed switches and file names, where only the switches - * to the left of a given file name affect processing of that file. - * The main program in this file doesn't actually use this capability... - */ - - -static const char * progname; /* program name for error messages */ -static char * outfilename; /* for -outfile switch */ - - -LOCAL(void) -usage (void) -/* complain about bad command line */ -{ - fprintf(stderr, "usage: %s [switches] ", progname); -#ifdef TWO_FILE_COMMANDLINE - fprintf(stderr, "inputfile outputfile\n"); -#else - fprintf(stderr, "[inputfile]\n"); -#endif - - fprintf(stderr, "Switches (names may be abbreviated):\n"); - fprintf(stderr, " -quality N Compression quality (0..100; 5-95 is useful range)\n"); - fprintf(stderr, " -grayscale Create monochrome JPEG file\n"); -#ifdef ENTROPY_OPT_SUPPORTED - fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n"); -#endif -#ifdef C_PROGRESSIVE_SUPPORTED - fprintf(stderr, " -progressive Create progressive JPEG file\n"); -#endif -#ifdef TARGA_SUPPORTED - fprintf(stderr, " -targa Input file is Targa format (usually not needed)\n"); -#endif - fprintf(stderr, "Switches for advanced users:\n"); -#ifdef DCT_ISLOW_SUPPORTED - fprintf(stderr, " -dct int Use integer DCT method%s\n", - (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); -#endif -#ifdef DCT_IFAST_SUPPORTED - fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", - (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); -#endif -#ifdef DCT_FLOAT_SUPPORTED - fprintf(stderr, " -dct float Use floating-point DCT method%s\n", - (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); -#endif - fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n"); -#ifdef INPUT_SMOOTHING_SUPPORTED - fprintf(stderr, " -smooth N Smooth dithered input (N=1..100 is strength)\n"); -#endif - fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); - fprintf(stderr, " -outfile name Specify name for output file\n"); - fprintf(stderr, " -verbose or -debug Emit debug output\n"); - fprintf(stderr, "Switches for wizards:\n"); -#ifdef C_ARITH_CODING_SUPPORTED - fprintf(stderr, " -arithmetic Use arithmetic coding\n"); -#endif - fprintf(stderr, " -baseline Force baseline quantization tables\n"); - fprintf(stderr, " -qtables file Use quantization tables given in file\n"); - fprintf(stderr, " -qslots N[,...] Set component quantization tables\n"); - fprintf(stderr, " -sample HxV[,...] Set component sampling factors\n"); -#ifdef C_MULTISCAN_FILES_SUPPORTED - fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n"); -#endif - exit(EXIT_FAILURE); -} - - -LOCAL(int) -parse_switches (j_compress_ptr cinfo, int argc, char **argv, - int last_file_arg_seen, boolean for_real) -/* Parse optional switches. - * Returns argv[] index of first file-name argument (== argc if none). - * Any file names with indexes <= last_file_arg_seen are ignored; - * they have presumably been processed in a previous iteration. - * (Pass 0 for last_file_arg_seen on the first or only iteration.) - * for_real is FALSE on the first (dummy) pass; we may skip any expensive - * processing. - */ -{ - int argn; - char * arg; - int quality; /* -quality parameter */ - int q_scale_factor; /* scaling percentage for -qtables */ - boolean force_baseline; - boolean simple_progressive; - char * qtablefile = NULL; /* saves -qtables filename if any */ - char * qslotsarg = NULL; /* saves -qslots parm if any */ - char * samplearg = NULL; /* saves -sample parm if any */ - char * scansarg = NULL; /* saves -scans parm if any */ - - /* Set up default JPEG parameters. */ - /* Note that default -quality level need not, and does not, - * match the default scaling for an explicit -qtables argument. - */ - quality = 75; /* default -quality value */ - q_scale_factor = 100; /* default to no scaling for -qtables */ - force_baseline = FALSE; /* by default, allow 16-bit quantizers */ - simple_progressive = FALSE; - is_targa = FALSE; - outfilename = NULL; - cinfo->err->trace_level = 0; - - /* Scan command line options, adjust parameters */ - - for (argn = 1; argn < argc; argn++) { - arg = argv[argn]; - if (*arg != '-') { - /* Not a switch, must be a file name argument */ - if (argn <= last_file_arg_seen) { - outfilename = NULL; /* -outfile applies to just one input file */ - continue; /* ignore this name if previously processed */ - } - break; /* else done parsing switches */ - } - arg++; /* advance past switch marker character */ - - if (keymatch(arg, "arithmetic", 1)) { - /* Use arithmetic coding. */ -#ifdef C_ARITH_CODING_SUPPORTED - cinfo->arith_code = TRUE; -#else - fprintf(stderr, "%s: sorry, arithmetic coding not supported\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "baseline", 1)) { - /* Force baseline-compatible output (8-bit quantizer values). */ - force_baseline = TRUE; - - } else if (keymatch(arg, "dct", 2)) { - /* Select DCT algorithm. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (keymatch(argv[argn], "int", 1)) { - cinfo->dct_method = JDCT_ISLOW; - } else if (keymatch(argv[argn], "fast", 2)) { - cinfo->dct_method = JDCT_IFAST; - } else if (keymatch(argv[argn], "float", 2)) { - cinfo->dct_method = JDCT_FLOAT; - } else - usage(); - - } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { - /* Enable debug printouts. */ - /* On first -d, print version identification */ - static boolean printed_version = FALSE; - - if (! printed_version) { - fprintf(stderr, "Independent JPEG Group's CJPEG, version %s\n%s\n", - JVERSION, JCOPYRIGHT); - printed_version = TRUE; - } - cinfo->err->trace_level++; - - } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { - /* Force a monochrome JPEG file to be generated. */ - jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); - - } else if (keymatch(arg, "maxmemory", 3)) { - /* Maximum memory in Kb (or Mb with 'm'). */ - long lval; - char ch = 'x'; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) - usage(); - if (ch == 'm' || ch == 'M') - lval *= 1000L; - cinfo->mem->max_memory_to_use = lval * 1000L; - - } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) { - /* Enable entropy parm optimization. */ -#ifdef ENTROPY_OPT_SUPPORTED - cinfo->optimize_coding = TRUE; -#else - fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "outfile", 4)) { - /* Set output file name. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - outfilename = argv[argn]; /* save it away for later use */ - - } else if (keymatch(arg, "progressive", 1)) { - /* Select simple progressive mode. */ -#ifdef C_PROGRESSIVE_SUPPORTED - simple_progressive = TRUE; - /* We must postpone execution until num_components is known. */ -#else - fprintf(stderr, "%s: sorry, progressive output was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "quality", 1)) { - /* Quality factor (quantization table scaling factor). */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%d", &quality) != 1) - usage(); - /* Change scale factor in case -qtables is present. */ - q_scale_factor = jpeg_quality_scaling(quality); - - } else if (keymatch(arg, "qslots", 2)) { - /* Quantization table slot numbers. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - qslotsarg = argv[argn]; - /* Must delay setting qslots until after we have processed any - * colorspace-determining switches, since jpeg_set_colorspace sets - * default quant table numbers. - */ - - } else if (keymatch(arg, "qtables", 2)) { - /* Quantization tables fetched from file. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - qtablefile = argv[argn]; - /* We postpone actually reading the file in case -quality comes later. */ - - } else if (keymatch(arg, "restart", 1)) { - /* Restart interval in MCU rows (or in MCUs with 'b'). */ - long lval; - char ch = 'x'; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) - usage(); - if (lval < 0 || lval > 65535L) - usage(); - if (ch == 'b' || ch == 'B') { - cinfo->restart_interval = (unsigned int) lval; - cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */ - } else { - cinfo->restart_in_rows = (int) lval; - /* restart_interval will be computed during startup */ - } - - } else if (keymatch(arg, "sample", 2)) { - /* Set sampling factors. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - samplearg = argv[argn]; - /* Must delay setting sample factors until after we have processed any - * colorspace-determining switches, since jpeg_set_colorspace sets - * default sampling factors. - */ - - } else if (keymatch(arg, "scans", 2)) { - /* Set scan script. */ -#ifdef C_MULTISCAN_FILES_SUPPORTED - if (++argn >= argc) /* advance to next argument */ - usage(); - scansarg = argv[argn]; - /* We must postpone reading the file in case -progressive appears. */ -#else - fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "smooth", 2)) { - /* Set input smoothing factor. */ - int val; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%d", &val) != 1) - usage(); - if (val < 0 || val > 100) - usage(); - cinfo->smoothing_factor = val; - - } else if (keymatch(arg, "targa", 1)) { - /* Input file is Targa format. */ - is_targa = TRUE; - - } else { - usage(); /* bogus switch */ - } - } - - /* Post-switch-scanning cleanup */ - - if (for_real) { - - /* Set quantization tables for selected quality. */ - /* Some or all may be overridden if -qtables is present. */ - jpeg_set_quality(cinfo, quality, force_baseline); - - if (qtablefile != NULL) /* process -qtables if it was present */ - if (! read_quant_tables(cinfo, qtablefile, - q_scale_factor, force_baseline)) - usage(); - - if (qslotsarg != NULL) /* process -qslots if it was present */ - if (! set_quant_slots(cinfo, qslotsarg)) - usage(); - - if (samplearg != NULL) /* process -sample if it was present */ - if (! set_sample_factors(cinfo, samplearg)) - usage(); - -#ifdef C_PROGRESSIVE_SUPPORTED - if (simple_progressive) /* process -progressive; -scans can override */ - jpeg_simple_progression(cinfo); -#endif - -#ifdef C_MULTISCAN_FILES_SUPPORTED - if (scansarg != NULL) /* process -scans if it was present */ - if (! read_scan_script(cinfo, scansarg)) - usage(); -#endif - } - - return argn; /* return index of next arg (file name) */ -} - - -/* - * The main program. - */ - -int -main (int argc, char **argv) -{ - struct jpeg_compress_struct cinfo; - struct jpeg_error_mgr jerr; -#ifdef PROGRESS_REPORT - struct cdjpeg_progress_mgr progress; -#endif - int file_index; - cjpeg_source_ptr src_mgr; - FILE * input_file; - FILE * output_file; - JDIMENSION num_scanlines; - - /* On Mac, fetch a command line. */ -#ifdef USE_CCOMMAND - argc = ccommand(&argv); -#endif - - progname = argv[0]; - if (progname == NULL || progname[0] == 0) - progname = "cjpeg"; /* in case C library doesn't provide it */ - - /* Initialize the JPEG compression object with default error handling. */ - cinfo.err = jpeg_std_error(&jerr); - jpeg_create_compress(&cinfo); - /* Add some application-specific error messages (from cderror.h) */ - jerr.addon_message_table = cdjpeg_message_table; - jerr.first_addon_message = JMSG_FIRSTADDONCODE; - jerr.last_addon_message = JMSG_LASTADDONCODE; - - /* Now safe to enable signal catcher. */ -#ifdef NEED_SIGNAL_CATCHER - enable_signal_catcher((j_common_ptr) &cinfo); -#endif - - /* Initialize JPEG parameters. - * Much of this may be overridden later. - * In particular, we don't yet know the input file's color space, - * but we need to provide some value for jpeg_set_defaults() to work. - */ - - cinfo.in_color_space = JCS_RGB; /* arbitrary guess */ - jpeg_set_defaults(&cinfo); - - /* Scan command line to find file names. - * It is convenient to use just one switch-parsing routine, but the switch - * values read here are ignored; we will rescan the switches after opening - * the input file. - */ - - file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); - -#ifdef TWO_FILE_COMMANDLINE - /* Must have either -outfile switch or explicit output file name */ - if (outfilename == NULL) { - if (file_index != argc-2) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - outfilename = argv[file_index+1]; - } else { - if (file_index != argc-1) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - } -#else - /* Unix style: expect zero or one file name */ - if (file_index < argc-1) { - fprintf(stderr, "%s: only one input file\n", progname); - usage(); - } -#endif /* TWO_FILE_COMMANDLINE */ - - /* Open the input file. */ - if (file_index < argc) { - if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); - exit(EXIT_FAILURE); - } - } else { - /* default input file is stdin */ - input_file = read_stdin(); - } - - /* Open the output file. */ - if (outfilename != NULL) { - if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, outfilename); - exit(EXIT_FAILURE); - } - } else { - /* default output file is stdout */ - output_file = write_stdout(); - } - -#ifdef PROGRESS_REPORT - start_progress_monitor((j_common_ptr) &cinfo, &progress); -#endif - - /* Figure out the input file format, and set up to read it. */ - src_mgr = select_file_type(&cinfo, input_file); - src_mgr->input_file = input_file; - - /* Read the input file header to obtain file size & colorspace. */ - (*src_mgr->start_input) (&cinfo, src_mgr); - - /* Now that we know input colorspace, fix colorspace-dependent defaults */ - jpeg_default_colorspace(&cinfo); - - /* Adjust default compression parameters by re-parsing the options */ - file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); - - /* Specify data destination for compression */ - jpeg_stdio_dest(&cinfo, output_file); - - /* Start compressor */ - jpeg_start_compress(&cinfo, TRUE); - - /* Process data */ - while (cinfo.next_scanline < cinfo.image_height) { - num_scanlines = (*src_mgr->get_pixel_rows) (&cinfo, src_mgr); - (void) jpeg_write_scanlines(&cinfo, src_mgr->buffer, num_scanlines); - } - - /* Finish compression and release memory */ - (*src_mgr->finish_input) (&cinfo, src_mgr); - jpeg_finish_compress(&cinfo); - jpeg_destroy_compress(&cinfo); - - /* Close files, if we opened them */ - if (input_file != stdin) - fclose(input_file); - if (output_file != stdout) - fclose(output_file); - -#ifdef PROGRESS_REPORT - end_progress_monitor((j_common_ptr) &cinfo); -#endif - - /* All done. */ - exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); - return 0; /* suppress no-return-value warnings */ -} diff --git a/project/jni/jpeg/ckconfig.c b/project/jni/jpeg/ckconfig.c deleted file mode 100644 index 34baf795b..000000000 --- a/project/jni/jpeg/ckconfig.c +++ /dev/null @@ -1,402 +0,0 @@ -/* - * ckconfig.c - * - * Copyright (C) 1991-1994, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - */ - -/* - * This program is intended to help you determine how to configure the JPEG - * software for installation on a particular system. The idea is to try to - * compile and execute this program. If your compiler fails to compile the - * program, make changes as indicated in the comments below. Once you can - * compile the program, run it, and it will produce a "jconfig.h" file for - * your system. - * - * As a general rule, each time you try to compile this program, - * pay attention only to the *first* error message you get from the compiler. - * Many C compilers will issue lots of spurious error messages once they - * have gotten confused. Go to the line indicated in the first error message, - * and read the comments preceding that line to see what to change. - * - * Almost all of the edits you may need to make to this program consist of - * changing a line that reads "#define SOME_SYMBOL" to "#undef SOME_SYMBOL", - * or vice versa. This is called defining or undefining that symbol. - */ - - -/* First we must see if your system has the include files we need. - * We start out with the assumption that your system has all the ANSI-standard - * include files. If you get any error trying to include one of these files, - * undefine the corresponding HAVE_xxx symbol. - */ - -#define HAVE_STDDEF_H /* replace 'define' by 'undef' if error here */ -#ifdef HAVE_STDDEF_H /* next line will be skipped if you undef... */ -#include -#endif - -#define HAVE_STDLIB_H /* same thing for stdlib.h */ -#ifdef HAVE_STDLIB_H -#include -#endif - -#include /* If you ain't got this, you ain't got C. */ - -/* We have to see if your string functions are defined by - * strings.h (old BSD convention) or string.h (everybody else). - * We try the non-BSD convention first; define NEED_BSD_STRINGS - * if the compiler says it can't find string.h. - */ - -#undef NEED_BSD_STRINGS - -#ifdef NEED_BSD_STRINGS -#include -#else -#include -#endif - -/* On some systems (especially older Unix machines), type size_t is - * defined only in the include file . If you get a failure - * on the size_t test below, try defining NEED_SYS_TYPES_H. - */ - -#undef NEED_SYS_TYPES_H /* start by assuming we don't need it */ -#ifdef NEED_SYS_TYPES_H -#include -#endif - - -/* Usually type size_t is defined in one of the include files we've included - * above. If not, you'll get an error on the "typedef size_t my_size_t;" line. - * In that case, first try defining NEED_SYS_TYPES_H just above. - * If that doesn't work, you'll have to search through your system library - * to figure out which include file defines "size_t". Look for a line that - * says "typedef something-or-other size_t;". Then, change the line below - * that says "#include " to instead include the file - * you found size_t in, and define NEED_SPECIAL_INCLUDE. If you can't find - * type size_t anywhere, try replacing "#include " with - * "typedef unsigned int size_t;". - */ - -#undef NEED_SPECIAL_INCLUDE /* assume we DON'T need it, for starters */ - -#ifdef NEED_SPECIAL_INCLUDE -#include -#endif - -typedef size_t my_size_t; /* The payoff: do we have size_t now? */ - - -/* The next question is whether your compiler supports ANSI-style function - * prototypes. You need to know this in order to choose between using - * makefile.ansi and using makefile.unix. - * The #define line below is set to assume you have ANSI function prototypes. - * If you get an error in this group of lines, undefine HAVE_PROTOTYPES. - */ - -#define HAVE_PROTOTYPES - -#ifdef HAVE_PROTOTYPES -int testfunction (int arg1, int * arg2); /* check prototypes */ - -struct methods_struct { /* check method-pointer declarations */ - int (*error_exit) (char *msgtext); - int (*trace_message) (char *msgtext); - int (*another_method) (void); -}; - -int testfunction (int arg1, int * arg2) /* check definitions */ -{ - return arg2[arg1]; -} - -int test2function (void) /* check void arg list */ -{ - return 0; -} -#endif - - -/* Now we want to find out if your compiler knows what "unsigned char" means. - * If you get an error on the "unsigned char un_char;" line, - * then undefine HAVE_UNSIGNED_CHAR. - */ - -#define HAVE_UNSIGNED_CHAR - -#ifdef HAVE_UNSIGNED_CHAR -unsigned char un_char; -#endif - - -/* Now we want to find out if your compiler knows what "unsigned short" means. - * If you get an error on the "unsigned short un_short;" line, - * then undefine HAVE_UNSIGNED_SHORT. - */ - -#define HAVE_UNSIGNED_SHORT - -#ifdef HAVE_UNSIGNED_SHORT -unsigned short un_short; -#endif - - -/* Now we want to find out if your compiler understands type "void". - * If you get an error anywhere in here, undefine HAVE_VOID. - */ - -#define HAVE_VOID - -#ifdef HAVE_VOID -/* Caution: a C++ compiler will insist on complete prototypes */ -typedef void * void_ptr; /* check void * */ -#ifdef HAVE_PROTOTYPES /* check ptr to function returning void */ -typedef void (*void_func) (int a, int b); -#else -typedef void (*void_func) (); -#endif - -#ifdef HAVE_PROTOTYPES /* check void function result */ -void test3function (void_ptr arg1, void_func arg2) -#else -void test3function (arg1, arg2) - void_ptr arg1; - void_func arg2; -#endif -{ - char * locptr = (char *) arg1; /* check casting to and from void * */ - arg1 = (void *) locptr; - (*arg2) (1, 2); /* check call of fcn returning void */ -} -#endif - - -/* Now we want to find out if your compiler knows what "const" means. - * If you get an error here, undefine HAVE_CONST. - */ - -#define HAVE_CONST - -#ifdef HAVE_CONST -static const int carray[3] = {1, 2, 3}; - -#ifdef HAVE_PROTOTYPES -int test4function (const int arg1) -#else -int test4function (arg1) - const int arg1; -#endif -{ - return carray[arg1]; -} -#endif - - -/* If you get an error or warning about this structure definition, - * define INCOMPLETE_TYPES_BROKEN. - */ - -#undef INCOMPLETE_TYPES_BROKEN - -#ifndef INCOMPLETE_TYPES_BROKEN -typedef struct undefined_structure * undef_struct_ptr; -#endif - - -/* If you get an error about duplicate names, - * define NEED_SHORT_EXTERNAL_NAMES. - */ - -#undef NEED_SHORT_EXTERNAL_NAMES - -#ifndef NEED_SHORT_EXTERNAL_NAMES - -int possibly_duplicate_function () -{ - return 0; -} - -int possibly_dupli_function () -{ - return 1; -} - -#endif - - - -/************************************************************************ - * OK, that's it. You should not have to change anything beyond this - * point in order to compile and execute this program. (You might get - * some warnings, but you can ignore them.) - * When you run the program, it will make a couple more tests that it - * can do automatically, and then it will create jconfig.h and print out - * any additional suggestions it has. - ************************************************************************ - */ - - -#ifdef HAVE_PROTOTYPES -int is_char_signed (int arg) -#else -int is_char_signed (arg) - int arg; -#endif -{ - if (arg == 189) { /* expected result for unsigned char */ - return 0; /* type char is unsigned */ - } - else if (arg != -67) { /* expected result for signed char */ - printf("Hmm, it seems 'char' is not eight bits wide on your machine.\n"); - printf("I fear the JPEG software will not work at all.\n\n"); - } - return 1; /* assume char is signed otherwise */ -} - - -#ifdef HAVE_PROTOTYPES -int is_shifting_signed (long arg) -#else -int is_shifting_signed (arg) - long arg; -#endif -/* See whether right-shift on a long is signed or not. */ -{ - long res = arg >> 4; - - if (res == -0x7F7E80CL) { /* expected result for signed shift */ - return 1; /* right shift is signed */ - } - /* see if unsigned-shift hack will fix it. */ - /* we can't just test exact value since it depends on width of long... */ - res |= (~0L) << (32-4); - if (res == -0x7F7E80CL) { /* expected result now? */ - return 0; /* right shift is unsigned */ - } - printf("Right shift isn't acting as I expect it to.\n"); - printf("I fear the JPEG software will not work at all.\n\n"); - return 0; /* try it with unsigned anyway */ -} - - -#ifdef HAVE_PROTOTYPES -int main (int argc, char ** argv) -#else -int main (argc, argv) - int argc; - char ** argv; -#endif -{ - char signed_char_check = (char) (-67); - FILE *outfile; - - /* Attempt to write jconfig.h */ - if ((outfile = fopen("jconfig.h", "w")) == NULL) { - printf("Failed to write jconfig.h\n"); - return 1; - } - - /* Write out all the info */ - fprintf(outfile, "/* jconfig.h --- generated by ckconfig.c */\n"); - fprintf(outfile, "/* see jconfig.doc for explanations */\n\n"); -#ifdef HAVE_PROTOTYPES - fprintf(outfile, "#define HAVE_PROTOTYPES\n"); -#else - fprintf(outfile, "#undef HAVE_PROTOTYPES\n"); -#endif -#ifdef HAVE_UNSIGNED_CHAR - fprintf(outfile, "#define HAVE_UNSIGNED_CHAR\n"); -#else - fprintf(outfile, "#undef HAVE_UNSIGNED_CHAR\n"); -#endif -#ifdef HAVE_UNSIGNED_SHORT - fprintf(outfile, "#define HAVE_UNSIGNED_SHORT\n"); -#else - fprintf(outfile, "#undef HAVE_UNSIGNED_SHORT\n"); -#endif -#ifdef HAVE_VOID - fprintf(outfile, "/* #define void char */\n"); -#else - fprintf(outfile, "#define void char\n"); -#endif -#ifdef HAVE_CONST - fprintf(outfile, "/* #define const */\n"); -#else - fprintf(outfile, "#define const\n"); -#endif - if (is_char_signed((int) signed_char_check)) - fprintf(outfile, "#undef CHAR_IS_UNSIGNED\n"); - else - fprintf(outfile, "#define CHAR_IS_UNSIGNED\n"); -#ifdef HAVE_STDDEF_H - fprintf(outfile, "#define HAVE_STDDEF_H\n"); -#else - fprintf(outfile, "#undef HAVE_STDDEF_H\n"); -#endif -#ifdef HAVE_STDLIB_H - fprintf(outfile, "#define HAVE_STDLIB_H\n"); -#else - fprintf(outfile, "#undef HAVE_STDLIB_H\n"); -#endif -#ifdef NEED_BSD_STRINGS - fprintf(outfile, "#define NEED_BSD_STRINGS\n"); -#else - fprintf(outfile, "#undef NEED_BSD_STRINGS\n"); -#endif -#ifdef NEED_SYS_TYPES_H - fprintf(outfile, "#define NEED_SYS_TYPES_H\n"); -#else - fprintf(outfile, "#undef NEED_SYS_TYPES_H\n"); -#endif - fprintf(outfile, "#undef NEED_FAR_POINTERS\n"); -#ifdef NEED_SHORT_EXTERNAL_NAMES - fprintf(outfile, "#define NEED_SHORT_EXTERNAL_NAMES\n"); -#else - fprintf(outfile, "#undef NEED_SHORT_EXTERNAL_NAMES\n"); -#endif -#ifdef INCOMPLETE_TYPES_BROKEN - fprintf(outfile, "#define INCOMPLETE_TYPES_BROKEN\n"); -#else - fprintf(outfile, "#undef INCOMPLETE_TYPES_BROKEN\n"); -#endif - fprintf(outfile, "\n#ifdef JPEG_INTERNALS\n\n"); - if (is_shifting_signed(-0x7F7E80B1L)) - fprintf(outfile, "#undef RIGHT_SHIFT_IS_UNSIGNED\n"); - else - fprintf(outfile, "#define RIGHT_SHIFT_IS_UNSIGNED\n"); - fprintf(outfile, "\n#endif /* JPEG_INTERNALS */\n"); - fprintf(outfile, "\n#ifdef JPEG_CJPEG_DJPEG\n\n"); - fprintf(outfile, "#define BMP_SUPPORTED /* BMP image file format */\n"); - fprintf(outfile, "#define GIF_SUPPORTED /* GIF image file format */\n"); - fprintf(outfile, "#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */\n"); - fprintf(outfile, "#undef RLE_SUPPORTED /* Utah RLE image file format */\n"); - fprintf(outfile, "#define TARGA_SUPPORTED /* Targa image file format */\n\n"); - fprintf(outfile, "#undef TWO_FILE_COMMANDLINE /* You may need this on non-Unix systems */\n"); - fprintf(outfile, "#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */\n"); - fprintf(outfile, "#undef DONT_USE_B_MODE\n"); - fprintf(outfile, "/* #define PROGRESS_REPORT */ /* optional */\n"); - fprintf(outfile, "\n#endif /* JPEG_CJPEG_DJPEG */\n"); - - /* Close the jconfig.h file */ - fclose(outfile); - - /* User report */ - printf("Configuration check for Independent JPEG Group's software done.\n"); - printf("\nI have written the jconfig.h file for you.\n\n"); -#ifdef HAVE_PROTOTYPES - printf("You should use makefile.ansi as the starting point for your Makefile.\n"); -#else - printf("You should use makefile.unix as the starting point for your Makefile.\n"); -#endif - -#ifdef NEED_SPECIAL_INCLUDE - printf("\nYou'll need to change jconfig.h to include the system include file\n"); - printf("that you found type size_t in, or add a direct definition of type\n"); - printf("size_t if that's what you used. Just add it to the end.\n"); -#endif - - return 0; -} diff --git a/project/jni/jpeg/coderules.doc b/project/jni/jpeg/coderules.doc deleted file mode 100644 index 0ab5d9bd3..000000000 --- a/project/jni/jpeg/coderules.doc +++ /dev/null @@ -1,118 +0,0 @@ -IJG JPEG LIBRARY: CODING RULES - -Copyright (C) 1991-1996, Thomas G. Lane. -This file is part of the Independent JPEG Group's software. -For conditions of distribution and use, see the accompanying README file. - - -Since numerous people will be contributing code and bug fixes, it's important -to establish a common coding style. The goal of using similar coding styles -is much more important than the details of just what that style is. - -In general we follow the recommendations of "Recommended C Style and Coding -Standards" revision 6.1 (Cannon et al. as modified by Spencer, Keppel and -Brader). This document is available in the IJG FTP archive (see -jpeg/doc/cstyle.ms.tbl.Z, or cstyle.txt.Z for those without nroff/tbl). - -Block comments should be laid out thusly: - -/* - * Block comments in this style. - */ - -We indent statements in K&R style, e.g., - if (test) { - then-part; - } else { - else-part; - } -with two spaces per indentation level. (This indentation convention is -handled automatically by GNU Emacs and many other text editors.) - -Multi-word names should be written in lower case with underscores, e.g., -multi_word_name (not multiWordName). Preprocessor symbols and enum constants -are similar but upper case (MULTI_WORD_NAME). Names should be unique within -the first fifteen characters. (On some older systems, global names must be -unique within six characters. We accommodate this without cluttering the -source code by using macros to substitute shorter names.) - -We use function prototypes everywhere; we rely on automatic source code -transformation to feed prototype-less C compilers. Transformation is done -by the simple and portable tool 'ansi2knr.c' (courtesy of Ghostscript). -ansi2knr is not very bright, so it imposes a format requirement on function -declarations: the function name MUST BEGIN IN COLUMN 1. Thus all functions -should be written in the following style: - -LOCAL(int *) -function_name (int a, char *b) -{ - code... -} - -Note that each function definition must begin with GLOBAL(type), LOCAL(type), -or METHODDEF(type). These macros expand to "static type" or just "type" as -appropriate. They provide a readable indication of the routine's usage and -can readily be changed for special needs. (For instance, special linkage -keywords can be inserted for use in Windows DLLs.) - -ansi2knr does not transform method declarations (function pointers in -structs). We handle these with a macro JMETHOD, defined as - #ifdef HAVE_PROTOTYPES - #define JMETHOD(type,methodname,arglist) type (*methodname) arglist - #else - #define JMETHOD(type,methodname,arglist) type (*methodname) () - #endif -which is used like this: - struct function_pointers { - JMETHOD(void, init_entropy_encoder, (int somearg, jparms *jp)); - JMETHOD(void, term_entropy_encoder, (void)); - }; -Note the set of parentheses surrounding the parameter list. - -A similar solution is used for forward and external function declarations -(see the EXTERN and JPP macros). - -If the code is to work on non-ANSI compilers, we cannot rely on a prototype -declaration to coerce actual parameters into the right types. Therefore, use -explicit casts on actual parameters whenever the actual parameter type is not -identical to the formal parameter. Beware of implicit conversions to "int". - -It seems there are some non-ANSI compilers in which the sizeof() operator -is defined to return int, yet size_t is defined as long. Needless to say, -this is brain-damaged. Always use the SIZEOF() macro in place of sizeof(), -so that the result is guaranteed to be of type size_t. - - -The JPEG library is intended to be used within larger programs. Furthermore, -we want it to be reentrant so that it can be used by applications that process -multiple images concurrently. The following rules support these requirements: - -1. Avoid direct use of file I/O, "malloc", error report printouts, etc; -pass these through the common routines provided. - -2. Minimize global namespace pollution. Functions should be declared static -wherever possible. (Note that our method-based calling conventions help this -a lot: in many modules only the initialization function will ever need to be -called directly, so only that function need be externally visible.) All -global function names should begin with "jpeg_", and should have an -abbreviated name (unique in the first six characters) substituted by macro -when NEED_SHORT_EXTERNAL_NAMES is set. - -3. Don't use global variables; anything that must be used in another module -should be in the common data structures. - -4. Don't use static variables except for read-only constant tables. Variables -that should be private to a module can be placed into private structures (see -the system architecture document, structure.doc). - -5. Source file names should begin with "j" for files that are part of the -library proper; source files that are not part of the library, such as cjpeg.c -and djpeg.c, do not begin with "j". Keep source file names to eight -characters (plus ".c" or ".h", etc) to make life easy for MS-DOSers. Keep -compression and decompression code in separate source files --- some -applications may want only one half of the library. - -Note: these rules (particularly #4) are not followed religiously in the -modules that are used in cjpeg/djpeg but are not part of the JPEG library -proper. Those modules are not really intended to be used in other -applications. diff --git a/project/jni/jpeg/config.guess b/project/jni/jpeg/config.guess deleted file mode 100755 index 413ed41c0..000000000 --- a/project/jni/jpeg/config.guess +++ /dev/null @@ -1,883 +0,0 @@ -#! /bin/sh -# Attempt to guess a canonical system name. -# Copyright (C) 1992, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. -# -# This file is free software; you can redistribute it and/or modify it -# under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -# -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - -# Written by Per Bothner . -# The master version of this file is at the FSF in /home/gd/gnu/lib. -# -# This script attempts to guess a canonical system name similar to -# config.sub. If it succeeds, it prints the system name on stdout, and -# exits with 0. Otherwise, it exits with 1. -# -# The plan is that this can be called by configure scripts if you -# don't specify an explicit system type (host/target name). -# -# Only a few systems have been added to this list; please add others -# (but try to keep the structure clean). -# - -# This is needed to find uname on a Pyramid OSx when run in the BSD universe. -# (ghazi@noc.rutgers.edu 8/24/94.) -if (test -f /.attbin/uname) >/dev/null 2>&1 ; then - PATH=$PATH:/.attbin ; export PATH -fi - -UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown -UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown -UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown -UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown - -trap 'rm -f dummy.c dummy.o dummy; exit 1' 1 2 15 - -# Note: order is significant - the case branches are not exclusive. - -case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in - alpha:OSF1:*:*) - if test $UNAME_RELEASE = "V4.0"; then - UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'` - fi - # A Vn.n version is a released version. - # A Tn.n version is a released field test version. - # A Xn.n version is an unreleased experimental baselevel. - # 1.2 uses "1.2" for uname -r. - cat <dummy.s - .globl main - .ent main -main: - .frame \$30,0,\$26,0 - .prologue 0 - .long 0x47e03d80 # implver $0 - lda \$2,259 - .long 0x47e20c21 # amask $2,$1 - srl \$1,8,\$2 - sll \$2,2,\$2 - sll \$0,3,\$0 - addl \$1,\$0,\$0 - addl \$2,\$0,\$0 - ret \$31,(\$26),1 - .end main -EOF - ${CC-cc} dummy.s -o dummy 2>/dev/null - if test "$?" = 0 ; then - ./dummy - case "$?" in - 7) - UNAME_MACHINE="alpha" - ;; - 15) - UNAME_MACHINE="alphaev5" - ;; - 14) - UNAME_MACHINE="alphaev56" - ;; - 10) - UNAME_MACHINE="alphapca56" - ;; - 16) - UNAME_MACHINE="alphaev6" - ;; - esac - fi - rm -f dummy.s dummy - echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[VTX]//' | tr [[A-Z]] [[a-z]]` - exit 0 ;; - 21064:Windows_NT:50:3) - echo alpha-dec-winnt3.5 - exit 0 ;; - Amiga*:UNIX_System_V:4.0:*) - echo m68k-cbm-sysv4 - exit 0;; - amiga:NetBSD:*:*) - echo m68k-cbm-netbsd${UNAME_RELEASE} - exit 0 ;; - amiga:OpenBSD:*:*) - echo m68k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - arc64:OpenBSD:*:*) - echo mips64el-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - arc:OpenBSD:*:*) - echo mipsel-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - hkmips:OpenBSD:*:*) - echo mips-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - pmax:OpenBSD:*:*) - echo mipsel-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - sgi:OpenBSD:*:*) - echo mips-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - wgrisc:OpenBSD:*:*) - echo mipsel-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*) - echo arm-acorn-riscix${UNAME_RELEASE} - exit 0;; - arm32:NetBSD:*:*) - echo arm-unknown-netbsd`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'` - exit 0 ;; - SR2?01:HI-UX/MPP:*:*) - echo hppa1.1-hitachi-hiuxmpp - exit 0;; - Pyramid*:OSx*:*:*|MIS*:OSx*:*:*) - # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE. - if test "`(/bin/universe) 2>/dev/null`" = att ; then - echo pyramid-pyramid-sysv3 - else - echo pyramid-pyramid-bsd - fi - exit 0 ;; - NILE:*:*:dcosx) - echo pyramid-pyramid-svr4 - exit 0 ;; - sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*) - echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit 0 ;; - i86pc:SunOS:5.*:*) - echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit 0 ;; - sun4*:SunOS:6*:*) - # According to config.sub, this is the proper way to canonicalize - # SunOS6. Hard to guess exactly what SunOS6 will be like, but - # it's likely to be more like Solaris than SunOS4. - echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit 0 ;; - sun4*:SunOS:*:*) - case "`/usr/bin/arch -k`" in - Series*|S4*) - UNAME_RELEASE=`uname -v` - ;; - esac - # Japanese Language versions have a version number like `4.1.3-JL'. - echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'` - exit 0 ;; - sun3*:SunOS:*:*) - echo m68k-sun-sunos${UNAME_RELEASE} - exit 0 ;; - sun*:*:4.2BSD:*) - UNAME_RELEASE=`(head -1 /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null` - test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3 - case "`/bin/arch`" in - sun3) - echo m68k-sun-sunos${UNAME_RELEASE} - ;; - sun4) - echo sparc-sun-sunos${UNAME_RELEASE} - ;; - esac - exit 0 ;; - aushp:SunOS:*:*) - echo sparc-auspex-sunos${UNAME_RELEASE} - exit 0 ;; - atari*:NetBSD:*:*) - echo m68k-atari-netbsd${UNAME_RELEASE} - exit 0 ;; - atari*:OpenBSD:*:*) - echo m68k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - sun3*:NetBSD:*:*) - echo m68k-sun-netbsd${UNAME_RELEASE} - exit 0 ;; - sun3*:OpenBSD:*:*) - echo m68k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - mac68k:NetBSD:*:*) - echo m68k-apple-netbsd${UNAME_RELEASE} - exit 0 ;; - mac68k:OpenBSD:*:*) - echo m68k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - mvme68k:OpenBSD:*:*) - echo m68k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - mvme88k:OpenBSD:*:*) - echo m88k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - powerpc:machten:*:*) - echo powerpc-apple-machten${UNAME_RELEASE} - exit 0 ;; - RISC*:Mach:*:*) - echo mips-dec-mach_bsd4.3 - exit 0 ;; - RISC*:ULTRIX:*:*) - echo mips-dec-ultrix${UNAME_RELEASE} - exit 0 ;; - VAX*:ULTRIX*:*:*) - echo vax-dec-ultrix${UNAME_RELEASE} - exit 0 ;; - 2020:CLIX:*:*) - echo clipper-intergraph-clix${UNAME_RELEASE} - exit 0 ;; - mips:*:*:UMIPS | mips:*:*:RISCos) - sed 's/^ //' << EOF >dummy.c - int main (argc, argv) int argc; char **argv; { - #if defined (host_mips) && defined (MIPSEB) - #if defined (SYSTYPE_SYSV) - printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0); - #endif - #if defined (SYSTYPE_SVR4) - printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0); - #endif - #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD) - printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0); - #endif - #endif - exit (-1); - } -EOF - ${CC-cc} dummy.c -o dummy \ - && ./dummy `echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` \ - && rm dummy.c dummy && exit 0 - rm -f dummy.c dummy - echo mips-mips-riscos${UNAME_RELEASE} - exit 0 ;; - Night_Hawk:Power_UNIX:*:*) - echo powerpc-harris-powerunix - exit 0 ;; - m88k:CX/UX:7*:*) - echo m88k-harris-cxux7 - exit 0 ;; - m88k:*:4*:R4*) - echo m88k-motorola-sysv4 - exit 0 ;; - m88k:*:3*:R3*) - echo m88k-motorola-sysv3 - exit 0 ;; - AViiON:dgux:*:*) - # DG/UX returns AViiON for all architectures - UNAME_PROCESSOR=`/usr/bin/uname -p` - if [ $UNAME_PROCESSOR = mc88100 -o $UNAME_PROCESSOR = mc88110 ] ; then - if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx \ - -o ${TARGET_BINARY_INTERFACE}x = x ] ; then - echo m88k-dg-dgux${UNAME_RELEASE} - else - echo m88k-dg-dguxbcs${UNAME_RELEASE} - fi - else echo i586-dg-dgux${UNAME_RELEASE} - fi - exit 0 ;; - M88*:DolphinOS:*:*) # DolphinOS (SVR3) - echo m88k-dolphin-sysv3 - exit 0 ;; - M88*:*:R3*:*) - # Delta 88k system running SVR3 - echo m88k-motorola-sysv3 - exit 0 ;; - XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3) - echo m88k-tektronix-sysv3 - exit 0 ;; - Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD) - echo m68k-tektronix-bsd - exit 0 ;; - *:IRIX*:*:*) - echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'` - exit 0 ;; - ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX. - echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id - exit 0 ;; # Note that: echo "'`uname -s`'" gives 'AIX ' - i?86:AIX:*:*) - echo i386-ibm-aix - exit 0 ;; - *:AIX:2:3) - if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then - sed 's/^ //' << EOF >dummy.c - #include - - main() - { - if (!__power_pc()) - exit(1); - puts("powerpc-ibm-aix3.2.5"); - exit(0); - } -EOF - ${CC-cc} dummy.c -o dummy && ./dummy && rm dummy.c dummy && exit 0 - rm -f dummy.c dummy - echo rs6000-ibm-aix3.2.5 - elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then - echo rs6000-ibm-aix3.2.4 - else - echo rs6000-ibm-aix3.2 - fi - exit 0 ;; - *:AIX:*:4) - if /usr/sbin/lsattr -EHl proc0 | grep POWER >/dev/null 2>&1; then - IBM_ARCH=rs6000 - else - IBM_ARCH=powerpc - fi - if [ -x /usr/bin/oslevel ] ; then - IBM_REV=`/usr/bin/oslevel` - else - IBM_REV=4.${UNAME_RELEASE} - fi - echo ${IBM_ARCH}-ibm-aix${IBM_REV} - exit 0 ;; - *:AIX:*:*) - echo rs6000-ibm-aix - exit 0 ;; - ibmrt:4.4BSD:*|romp-ibm:BSD:*) - echo romp-ibm-bsd4.4 - exit 0 ;; - ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC NetBSD and - echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to - exit 0 ;; # report: romp-ibm BSD 4.3 - *:BOSX:*:*) - echo rs6000-bull-bosx - exit 0 ;; - DPX/2?00:B.O.S.:*:*) - echo m68k-bull-sysv3 - exit 0 ;; - 9000/[34]??:4.3bsd:1.*:*) - echo m68k-hp-bsd - exit 0 ;; - hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*) - echo m68k-hp-bsd4.4 - exit 0 ;; - 9000/[3478]??:HP-UX:*:*) - case "${UNAME_MACHINE}" in - 9000/31? ) HP_ARCH=m68000 ;; - 9000/[34]?? ) HP_ARCH=m68k ;; - 9000/7?? | 9000/8?[1679] ) HP_ARCH=hppa1.1 ;; - 9000/8?? ) HP_ARCH=hppa1.0 ;; - esac - HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'` - echo ${HP_ARCH}-hp-hpux${HPUX_REV} - exit 0 ;; - 3050*:HI-UX:*:*) - sed 's/^ //' << EOF >dummy.c - #include - int - main () - { - long cpu = sysconf (_SC_CPU_VERSION); - /* The order matters, because CPU_IS_HP_MC68K erroneously returns - true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct - results, however. */ - if (CPU_IS_PA_RISC (cpu)) - { - switch (cpu) - { - case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break; - case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break; - case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break; - default: puts ("hppa-hitachi-hiuxwe2"); break; - } - } - else if (CPU_IS_HP_MC68K (cpu)) - puts ("m68k-hitachi-hiuxwe2"); - else puts ("unknown-hitachi-hiuxwe2"); - exit (0); - } -EOF - ${CC-cc} dummy.c -o dummy && ./dummy && rm dummy.c dummy && exit 0 - rm -f dummy.c dummy - echo unknown-hitachi-hiuxwe2 - exit 0 ;; - 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* ) - echo hppa1.1-hp-bsd - exit 0 ;; - 9000/8??:4.3bsd:*:*) - echo hppa1.0-hp-bsd - exit 0 ;; - hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* ) - echo hppa1.1-hp-osf - exit 0 ;; - hp8??:OSF1:*:*) - echo hppa1.0-hp-osf - exit 0 ;; - i?86:OSF1:*:*) - if [ -x /usr/sbin/sysversion ] ; then - echo ${UNAME_MACHINE}-unknown-osf1mk - else - echo ${UNAME_MACHINE}-unknown-osf1 - fi - exit 0 ;; - parisc*:Lites*:*:*) - echo hppa1.1-hp-lites - exit 0 ;; - C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*) - echo c1-convex-bsd - exit 0 ;; - C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit 0 ;; - C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*) - echo c34-convex-bsd - exit 0 ;; - C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*) - echo c38-convex-bsd - exit 0 ;; - C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*) - echo c4-convex-bsd - exit 0 ;; - CRAY*X-MP:*:*:*) - echo xmp-cray-unicos - exit 0 ;; - CRAY*Y-MP:*:*:*) - echo ymp-cray-unicos${UNAME_RELEASE} - exit 0 ;; - CRAY*[A-Z]90:*:*:*) - echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \ - | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \ - -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ - exit 0 ;; - CRAY*TS:*:*:*) - echo t90-cray-unicos${UNAME_RELEASE} - exit 0 ;; - CRAY-2:*:*:*) - echo cray2-cray-unicos - exit 0 ;; - F300:UNIX_System_V:*:*) - FUJITSU_SYS=`uname -p | tr [A-Z] [a-z] | sed -e 's/\///'` - FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'` - echo "f300-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}" - exit 0 ;; - F301:UNIX_System_V:*:*) - echo f301-fujitsu-uxpv`echo $UNAME_RELEASE | sed 's/ .*//'` - exit 0 ;; - hp3[0-9][05]:NetBSD:*:*) - echo m68k-hp-netbsd${UNAME_RELEASE} - exit 0 ;; - hp300:OpenBSD:*:*) - echo m68k-unknown-openbsd${UNAME_RELEASE} - exit 0 ;; - i?86:BSD/386:*:* | *:BSD/OS:*:*) - echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE} - exit 0 ;; - *:FreeBSD:*:*) - echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` - exit 0 ;; - *:NetBSD:*:*) - echo ${UNAME_MACHINE}-unknown-netbsd`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'` - exit 0 ;; - *:OpenBSD:*:*) - echo ${UNAME_MACHINE}-unknown-openbsd`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'` - exit 0 ;; - i*:CYGWIN*:*) - echo i386-pc-cygwin32 - exit 0 ;; - i*:MINGW*:*) - echo i386-pc-mingw32 - exit 0 ;; - p*:CYGWIN*:*) - echo powerpcle-unknown-cygwin32 - exit 0 ;; - prep*:SunOS:5.*:*) - echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'` - exit 0 ;; - *:GNU:*:*) - echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'` - exit 0 ;; - *:Linux:*:*) - # The BFD linker knows what the default object file format is, so - # first see if it will tell us. - ld_help_string=`ld --help 2>&1` - ld_supported_emulations=`echo $ld_help_string \ - | sed -ne '/supported emulations:/!d - s/[ ][ ]*/ /g - s/.*supported emulations: *// - s/ .*// - p'` - case "$ld_supported_emulations" in - i?86linux) echo "${UNAME_MACHINE}-pc-linux-gnuaout" ; exit 0 ;; - i?86coff) echo "${UNAME_MACHINE}-pc-linux-gnucoff" ; exit 0 ;; - sparclinux) echo "${UNAME_MACHINE}-unknown-linux-gnuaout" ; exit 0 ;; - m68klinux) echo "${UNAME_MACHINE}-unknown-linux-gnuaout" ; exit 0 ;; - elf32ppc) echo "powerpc-unknown-linux-gnu" ; exit 0 ;; - esac - - if test "${UNAME_MACHINE}" = "alpha" ; then - sed 's/^ //' <dummy.s - .globl main - .ent main - main: - .frame \$30,0,\$26,0 - .prologue 0 - .long 0x47e03d80 # implver $0 - lda \$2,259 - .long 0x47e20c21 # amask $2,$1 - srl \$1,8,\$2 - sll \$2,2,\$2 - sll \$0,3,\$0 - addl \$1,\$0,\$0 - addl \$2,\$0,\$0 - ret \$31,(\$26),1 - .end main -EOF - LIBC="" - ${CC-cc} dummy.s -o dummy 2>/dev/null - if test "$?" = 0 ; then - ./dummy - case "$?" in - 7) - UNAME_MACHINE="alpha" - ;; - 15) - UNAME_MACHINE="alphaev5" - ;; - 14) - UNAME_MACHINE="alphaev56" - ;; - 10) - UNAME_MACHINE="alphapca56" - ;; - 16) - UNAME_MACHINE="alphaev6" - ;; - esac - - objdump --private-headers dummy | \ - grep ld.so.1 > /dev/null - if test "$?" = 0 ; then - LIBC="libc1" - fi - fi - rm -f dummy.s dummy - echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} ; exit 0 - elif test "${UNAME_MACHINE}" = "mips" ; then - cat >dummy.c </dev/null && ./dummy "${UNAME_MACHINE}" && rm dummy.c dummy && exit 0 - rm -f dummy.c dummy - else - # Either a pre-BFD a.out linker (linux-gnuoldld) - # or one that does not give us useful --help. - # GCC wants to distinguish between linux-gnuoldld and linux-gnuaout. - # If ld does not provide *any* "supported emulations:" - # that means it is gnuoldld. - echo "$ld_help_string" | grep >/dev/null 2>&1 "supported emulations:" - test $? != 0 && echo "${UNAME_MACHINE}-pc-linux-gnuoldld" && exit 0 - - case "${UNAME_MACHINE}" in - i?86) - VENDOR=pc; - ;; - *) - VENDOR=unknown; - ;; - esac - # Determine whether the default compiler is a.out or elf - cat >dummy.c < -main(argc, argv) - int argc; - char *argv[]; -{ -#ifdef __ELF__ -# ifdef __GLIBC__ -# if __GLIBC__ >= 2 - printf ("%s-${VENDOR}-linux-gnu\n", argv[1]); -# else - printf ("%s-${VENDOR}-linux-gnulibc1\n", argv[1]); -# endif -# else - printf ("%s-${VENDOR}-linux-gnulibc1\n", argv[1]); -# endif -#else - printf ("%s-${VENDOR}-linux-gnuaout\n", argv[1]); -#endif - return 0; -} -EOF - ${CC-cc} dummy.c -o dummy 2>/dev/null && ./dummy "${UNAME_MACHINE}" && rm dummy.c dummy && exit 0 - rm -f dummy.c dummy - fi ;; -# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there. earlier versions -# are messed up and put the nodename in both sysname and nodename. - i?86:DYNIX/ptx:4*:*) - echo i386-sequent-sysv4 - exit 0 ;; - i?86:UNIX_SV:4.2MP:2.*) - # Unixware is an offshoot of SVR4, but it has its own version - # number series starting with 2... - # I am not positive that other SVR4 systems won't match this, - # I just have to hope. -- rms. - # Use sysv4.2uw... so that sysv4* matches it. - echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION} - exit 0 ;; - i?86:*:4.*:* | i?86:SYSTEM_V:4.*:*) - if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then - echo ${UNAME_MACHINE}-univel-sysv${UNAME_RELEASE} - else - echo ${UNAME_MACHINE}-pc-sysv${UNAME_RELEASE} - fi - exit 0 ;; - i?86:*:3.2:*) - if test -f /usr/options/cb.name; then - UNAME_REL=`sed -n 's/.*Version //p' /dev/null >/dev/null ; then - UNAME_REL=`(/bin/uname -X|egrep Release|sed -e 's/.*= //')` - (/bin/uname -X|egrep i80486 >/dev/null) && UNAME_MACHINE=i486 - (/bin/uname -X|egrep '^Machine.*Pentium' >/dev/null) \ - && UNAME_MACHINE=i586 - echo ${UNAME_MACHINE}-pc-sco$UNAME_REL - else - echo ${UNAME_MACHINE}-pc-sysv32 - fi - exit 0 ;; - pc:*:*:*) - # uname -m prints for DJGPP always 'pc', but it prints nothing about - # the processor, so we play safe by assuming i386. - echo i386-pc-msdosdjgpp - exit 0 ;; - Intel:Mach:3*:*) - echo i386-pc-mach3 - exit 0 ;; - paragon:*:*:*) - echo i860-intel-osf1 - exit 0 ;; - i860:*:4.*:*) # i860-SVR4 - if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then - echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4 - else # Add other i860-SVR4 vendors below as they are discovered. - echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4 - fi - exit 0 ;; - mini*:CTIX:SYS*5:*) - # "miniframe" - echo m68010-convergent-sysv - exit 0 ;; - M68*:*:R3V[567]*:*) - test -r /sysV68 && echo 'm68k-motorola-sysv' && exit 0 ;; - 3[34]??:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 4850:*:4.0:3.0) - OS_REL='' - test -r /etc/.relid \ - && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid` - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && echo i486-ncr-sysv4.3${OS_REL} && exit 0 - /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \ - && echo i586-ncr-sysv4.3${OS_REL} && exit 0 ;; - 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*) - /bin/uname -p 2>/dev/null | grep 86 >/dev/null \ - && echo i486-ncr-sysv4 && exit 0 ;; - m68*:LynxOS:2.*:*) - echo m68k-unknown-lynxos${UNAME_RELEASE} - exit 0 ;; - mc68030:UNIX_System_V:4.*:*) - echo m68k-atari-sysv4 - exit 0 ;; - i?86:LynxOS:2.*:*) - echo i386-unknown-lynxos${UNAME_RELEASE} - exit 0 ;; - TSUNAMI:LynxOS:2.*:*) - echo sparc-unknown-lynxos${UNAME_RELEASE} - exit 0 ;; - rs6000:LynxOS:2.*:* | PowerPC:LynxOS:2.*:*) - echo rs6000-unknown-lynxos${UNAME_RELEASE} - exit 0 ;; - SM[BE]S:UNIX_SV:*:*) - echo mips-dde-sysv${UNAME_RELEASE} - exit 0 ;; - RM*:SINIX-*:*:*) - echo mips-sni-sysv4 - exit 0 ;; - *:SINIX-*:*:*) - if uname -p 2>/dev/null >/dev/null ; then - UNAME_MACHINE=`(uname -p) 2>/dev/null` - echo ${UNAME_MACHINE}-sni-sysv4 - else - echo ns32k-sni-sysv - fi - exit 0 ;; - PENTIUM:CPunix:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort - # says - echo i586-unisys-sysv4 - exit 0 ;; - *:UNIX_System_V:4*:FTX*) - # From Gerald Hewes . - # How about differentiating between stratus architectures? -djm - echo hppa1.1-stratus-sysv4 - exit 0 ;; - *:*:*:FTX*) - # From seanf@swdc.stratus.com. - echo i860-stratus-sysv4 - exit 0 ;; - mc68*:A/UX:*:*) - echo m68k-apple-aux${UNAME_RELEASE} - exit 0 ;; - news*:NEWS-OS:*:6*) - echo mips-sony-newsos6 - exit 0 ;; - R3000:*System_V*:*:* | R4000:UNIX_SYSV:*:*) - if [ -d /usr/nec ]; then - echo mips-nec-sysv${UNAME_RELEASE} - else - echo mips-unknown-sysv${UNAME_RELEASE} - fi - exit 0 ;; -esac - -#echo '(No uname command or uname output not recognized.)' 1>&2 -#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2 - -cat >dummy.c < -# include -#endif -main () -{ -#if defined (sony) -#if defined (MIPSEB) - /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed, - I don't know.... */ - printf ("mips-sony-bsd\n"); exit (0); -#else -#include - printf ("m68k-sony-newsos%s\n", -#ifdef NEWSOS4 - "4" -#else - "" -#endif - ); exit (0); -#endif -#endif - -#if defined (__arm) && defined (__acorn) && defined (__unix) - printf ("arm-acorn-riscix"); exit (0); -#endif - -#if defined (hp300) && !defined (hpux) - printf ("m68k-hp-bsd\n"); exit (0); -#endif - -#if defined (NeXT) -#if !defined (__ARCHITECTURE__) -#define __ARCHITECTURE__ "m68k" -#endif - int version; - version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`; - printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version); - exit (0); -#endif - -#if defined (MULTIMAX) || defined (n16) -#if defined (UMAXV) - printf ("ns32k-encore-sysv\n"); exit (0); -#else -#if defined (CMU) - printf ("ns32k-encore-mach\n"); exit (0); -#else - printf ("ns32k-encore-bsd\n"); exit (0); -#endif -#endif -#endif - -#if defined (__386BSD__) - printf ("i386-pc-bsd\n"); exit (0); -#endif - -#if defined (sequent) -#if defined (i386) - printf ("i386-sequent-dynix\n"); exit (0); -#endif -#if defined (ns32000) - printf ("ns32k-sequent-dynix\n"); exit (0); -#endif -#endif - -#if defined (_SEQUENT_) - struct utsname un; - - uname(&un); - - if (strncmp(un.version, "V2", 2) == 0) { - printf ("i386-sequent-ptx2\n"); exit (0); - } - if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */ - printf ("i386-sequent-ptx1\n"); exit (0); - } - printf ("i386-sequent-ptx\n"); exit (0); - -#endif - -#if defined (vax) -#if !defined (ultrix) - printf ("vax-dec-bsd\n"); exit (0); -#else - printf ("vax-dec-ultrix\n"); exit (0); -#endif -#endif - -#if defined (alliant) && defined (i860) - printf ("i860-alliant-bsd\n"); exit (0); -#endif - - exit (1); -} -EOF - -${CC-cc} dummy.c -o dummy 2>/dev/null && ./dummy && rm dummy.c dummy && exit 0 -rm -f dummy.c dummy - -# Apollos put the system type in the environment. - -test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit 0; } - -# Convex versions that predate uname can use getsysinfo(1) - -if [ -x /usr/convex/getsysinfo ] -then - case `getsysinfo -f cpu_type` in - c1*) - echo c1-convex-bsd - exit 0 ;; - c2*) - if getsysinfo -f scalar_acc - then echo c32-convex-bsd - else echo c2-convex-bsd - fi - exit 0 ;; - c34*) - echo c34-convex-bsd - exit 0 ;; - c38*) - echo c38-convex-bsd - exit 0 ;; - c4*) - echo c4-convex-bsd - exit 0 ;; - esac -fi - -#echo '(Unable to guess system type)' 1>&2 - -exit 1 diff --git a/project/jni/jpeg/config.sub b/project/jni/jpeg/config.sub deleted file mode 100755 index 213a6d47d..000000000 --- a/project/jni/jpeg/config.sub +++ /dev/null @@ -1,954 +0,0 @@ -#! /bin/sh -# Configuration validation subroutine script, version 1.1. -# Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. -# This file is (in principle) common to ALL GNU software. -# The presence of a machine in this file suggests that SOME GNU software -# can handle that machine. It does not imply ALL GNU software can. -# -# This file is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place - Suite 330, -# Boston, MA 02111-1307, USA. - -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - -# Configuration subroutine to validate and canonicalize a configuration type. -# Supply the specified configuration type as an argument. -# If it is invalid, we print an error message on stderr and exit with code 1. -# Otherwise, we print the canonical config type on stdout and succeed. - -# This file is supposed to be the same for all GNU packages -# and recognize all the CPU types, system types and aliases -# that are meaningful with *any* GNU software. -# Each package is responsible for reporting which valid configurations -# it does not support. 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PBMPLUS (PPM/PGM), BMP, -GIF, Targa, or RLE (Utah Raster Toolkit) output format can be selected. -(RLE is supported only if the URT library is available.) -.SH OPTIONS -All switch names may be abbreviated; for example, -.B \-grayscale -may be written -.B \-gray -or -.BR \-gr . -Most of the "basic" switches can be abbreviated to as little as one letter. -Upper and lower case are equivalent (thus -.B \-BMP -is the same as -.BR \-bmp ). -British spellings are also accepted (e.g., -.BR \-greyscale ), -though for brevity these are not mentioned below. -.PP -The basic switches are: -.TP -.BI \-colors " N" -Reduce image to at most N colors. This reduces the number of colors used in -the output image, so that it can be displayed on a colormapped display or -stored in a colormapped file format. For example, if you have an 8-bit -display, you'd need to reduce to 256 or fewer colors. -.TP -.BI \-quantize " N" -Same as -.BR \-colors . -.B \-colors -is the recommended name, -.B \-quantize -is provided only for backwards compatibility. -.TP -.B \-fast -Select recommended processing options for fast, low quality output. (The -default options are chosen for highest quality output.) Currently, this is -equivalent to \fB\-dct fast \-nosmooth \-onepass \-dither ordered\fR. -.TP -.B \-grayscale -Force gray-scale output even if JPEG file is color. Useful for viewing on -monochrome displays; also, -.B djpeg -runs noticeably faster in this mode. -.TP -.BI \-scale " M/N" -Scale the output image by a factor M/N. Currently the scale factor must be -1/1, 1/2, 1/4, or 1/8. Scaling is handy if the image is larger than your -screen; also, -.B djpeg -runs much faster when scaling down the output. -.TP -.B \-bmp -Select BMP output format (Windows flavor). 8-bit colormapped format is -emitted if -.B \-colors -or -.B \-grayscale -is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color -format is emitted. -.TP -.B \-gif -Select GIF output format. Since GIF does not support more than 256 colors, -.B \-colors 256 -is assumed (unless you specify a smaller number of colors). -.TP -.B \-os2 -Select BMP output format (OS/2 1.x flavor). 8-bit colormapped format is -emitted if -.B \-colors -or -.B \-grayscale -is specified, or if the JPEG file is gray-scale; otherwise, 24-bit full-color -format is emitted. -.TP -.B \-pnm -Select PBMPLUS (PPM/PGM) output format (this is the default format). -PGM is emitted if the JPEG file is gray-scale or if -.B \-grayscale -is specified; otherwise PPM is emitted. -.TP -.B \-rle -Select RLE output format. (Requires URT library.) -.TP -.B \-targa -Select Targa output format. Gray-scale format is emitted if the JPEG file is -gray-scale or if -.B \-grayscale -is specified; otherwise, colormapped format is emitted if -.B \-colors -is specified; otherwise, 24-bit full-color format is emitted. -.PP -Switches for advanced users: -.TP -.B \-dct int -Use integer DCT method (default). -.TP -.B \-dct fast -Use fast integer DCT (less accurate). -.TP -.B \-dct float -Use floating-point DCT method. -The float method is very slightly more accurate than the int method, but is -much slower unless your machine has very fast floating-point hardware. Also -note that results of the floating-point method may vary slightly across -machines, while the integer methods should give the same results everywhere. -The fast integer method is much less accurate than the other two. -.TP -.B \-dither fs -Use Floyd-Steinberg dithering in color quantization. -.TP -.B \-dither ordered -Use ordered dithering in color quantization. -.TP -.B \-dither none -Do not use dithering in color quantization. -By default, Floyd-Steinberg dithering is applied when quantizing colors; this -is slow but usually produces the best results. Ordered dither is a compromise -between speed and quality; no dithering is fast but usually looks awful. Note -that these switches have no effect unless color quantization is being done. -Ordered dither is only available in -.B \-onepass -mode. -.TP -.BI \-map " file" -Quantize to the colors used in the specified image file. This is useful for -producing multiple files with identical color maps, or for forcing a -predefined set of colors to be used. The -.I file -must be a GIF or PPM file. This option overrides -.B \-colors -and -.BR \-onepass . -.TP -.B \-nosmooth -Use a faster, lower-quality upsampling routine. -.TP -.B \-onepass -Use one-pass instead of two-pass color quantization. The one-pass method is -faster and needs less memory, but it produces a lower-quality image. -.B \-onepass -is ignored unless you also say -.B \-colors -.IR N . -Also, the one-pass method is always used for gray-scale output (the two-pass -method is no improvement then). -.TP -.BI \-maxmemory " N" -Set limit for amount of memory to use in processing large images. Value is -in thousands of bytes, or millions of bytes if "M" is attached to the -number. For example, -.B \-max 4m -selects 4000000 bytes. If more space is needed, temporary files will be used. -.TP -.BI \-outfile " name" -Send output image to the named file, not to standard output. -.TP -.B \-verbose -Enable debug printout. More -.BR \-v 's -give more output. Also, version information is printed at startup. -.TP -.B \-debug -Same as -.BR \-verbose . -.SH EXAMPLES -.LP -This example decompresses the JPEG file foo.jpg, quantizes it to -256 colors, and saves the output in 8-bit BMP format in foo.bmp: -.IP -.B djpeg \-colors 256 \-bmp -.I foo.jpg -.B > -.I foo.bmp -.SH HINTS -To get a quick preview of an image, use the -.B \-grayscale -and/or -.B \-scale -switches. -.B \-grayscale \-scale 1/8 -is the fastest case. -.PP -Several options are available that trade off image quality to gain speed. -.B \-fast -turns on the recommended settings. -.PP -.B \-dct fast -and/or -.B \-nosmooth -gain speed at a small sacrifice in quality. -When producing a color-quantized image, -.B \-onepass \-dither ordered -is fast but much lower quality than the default behavior. -.B \-dither none -may give acceptable results in two-pass mode, but is seldom tolerable in -one-pass mode. -.PP -If you are fortunate enough to have very fast floating point hardware, -\fB\-dct float\fR may be even faster than \fB\-dct fast\fR. But on most -machines \fB\-dct float\fR is slower than \fB\-dct int\fR; in this case it is -not worth using, because its theoretical accuracy advantage is too small to be -significant in practice. -.SH ENVIRONMENT -.TP -.B JPEGMEM -If this environment variable is set, its value is the default memory limit. -The value is specified as described for the -.B \-maxmemory -switch. -.B JPEGMEM -overrides the default value specified when the program was compiled, and -itself is overridden by an explicit -.BR \-maxmemory . -.SH SEE ALSO -.BR cjpeg (1), -.BR jpegtran (1), -.BR rdjpgcom (1), -.BR wrjpgcom (1) -.br -.BR ppm (5), -.BR pgm (5) -.br -Wallace, Gregory K. "The JPEG Still Picture Compression Standard", -Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44. -.SH AUTHOR -Independent JPEG Group -.SH BUGS -Arithmetic coding is not supported for legal reasons. -.PP -To avoid the Unisys LZW patent, -.B djpeg -produces uncompressed GIF files. These are larger than they should be, but -are readable by standard GIF decoders. -.PP -Still not as fast as we'd like. diff --git a/project/jni/jpeg/djpeg.c b/project/jni/jpeg/djpeg.c deleted file mode 100644 index e099e90ae..000000000 --- a/project/jni/jpeg/djpeg.c +++ /dev/null @@ -1,616 +0,0 @@ -/* - * djpeg.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a command-line user interface for the JPEG decompressor. - * It should work on any system with Unix- or MS-DOS-style command lines. - * - * Two different command line styles are permitted, depending on the - * compile-time switch TWO_FILE_COMMANDLINE: - * djpeg [options] inputfile outputfile - * djpeg [options] [inputfile] - * In the second style, output is always to standard output, which you'd - * normally redirect to a file or pipe to some other program. Input is - * either from a named file or from standard input (typically redirected). - * The second style is convenient on Unix but is unhelpful on systems that - * don't support pipes. Also, you MUST use the first style if your system - * doesn't do binary I/O to stdin/stdout. - * To simplify script writing, the "-outfile" switch is provided. The syntax - * djpeg [options] -outfile outputfile inputfile - * works regardless of which command line style is used. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ -#include "jversion.h" /* for version message */ - -#include /* to declare isprint() */ - -#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ -#ifdef __MWERKS__ -#include /* Metrowerks needs this */ -#include /* ... and this */ -#endif -#ifdef THINK_C -#include /* Think declares it here */ -#endif -#endif - - -/* Create the add-on message string table. */ - -#define JMESSAGE(code,string) string , - -static const char * const cdjpeg_message_table[] = { -#include "cderror.h" - NULL -}; - - -/* - * This list defines the known output image formats - * (not all of which need be supported by a given version). - * You can change the default output format by defining DEFAULT_FMT; - * indeed, you had better do so if you undefine PPM_SUPPORTED. - */ - -typedef enum { - FMT_BMP, /* BMP format (Windows flavor) */ - FMT_GIF, /* GIF format */ - FMT_OS2, /* BMP format (OS/2 flavor) */ - FMT_PPM, /* PPM/PGM (PBMPLUS formats) */ - FMT_RLE, /* RLE format */ - FMT_TARGA, /* Targa format */ - FMT_TIFF /* TIFF format */ -} IMAGE_FORMATS; - -#ifndef DEFAULT_FMT /* so can override from CFLAGS in Makefile */ -#define DEFAULT_FMT FMT_PPM -#endif - -static IMAGE_FORMATS requested_fmt; - - -/* - * Argument-parsing code. - * The switch parser is designed to be useful with DOS-style command line - * syntax, ie, intermixed switches and file names, where only the switches - * to the left of a given file name affect processing of that file. - * The main program in this file doesn't actually use this capability... - */ - - -static const char * progname; /* program name for error messages */ -static char * outfilename; /* for -outfile switch */ - - -LOCAL(void) -usage (void) -/* complain about bad command line */ -{ - fprintf(stderr, "usage: %s [switches] ", progname); -#ifdef TWO_FILE_COMMANDLINE - fprintf(stderr, "inputfile outputfile\n"); -#else - fprintf(stderr, "[inputfile]\n"); -#endif - - fprintf(stderr, "Switches (names may be abbreviated):\n"); - fprintf(stderr, " -colors N Reduce image to no more than N colors\n"); - fprintf(stderr, " -fast Fast, low-quality processing\n"); - fprintf(stderr, " -grayscale Force grayscale output\n"); -#ifdef IDCT_SCALING_SUPPORTED - fprintf(stderr, " -scale M/N Scale output image by fraction M/N, eg, 1/8\n"); -#endif -#ifdef BMP_SUPPORTED - fprintf(stderr, " -bmp Select BMP output format (Windows style)%s\n", - (DEFAULT_FMT == FMT_BMP ? " (default)" : "")); -#endif -#ifdef GIF_SUPPORTED - fprintf(stderr, " -gif Select GIF output format%s\n", - (DEFAULT_FMT == FMT_GIF ? " (default)" : "")); -#endif -#ifdef BMP_SUPPORTED - fprintf(stderr, " -os2 Select BMP output format (OS/2 style)%s\n", - (DEFAULT_FMT == FMT_OS2 ? " (default)" : "")); -#endif -#ifdef PPM_SUPPORTED - fprintf(stderr, " -pnm Select PBMPLUS (PPM/PGM) output format%s\n", - (DEFAULT_FMT == FMT_PPM ? " (default)" : "")); -#endif -#ifdef RLE_SUPPORTED - fprintf(stderr, " -rle Select Utah RLE output format%s\n", - (DEFAULT_FMT == FMT_RLE ? " (default)" : "")); -#endif -#ifdef TARGA_SUPPORTED - fprintf(stderr, " -targa Select Targa output format%s\n", - (DEFAULT_FMT == FMT_TARGA ? " (default)" : "")); -#endif - fprintf(stderr, "Switches for advanced users:\n"); -#ifdef DCT_ISLOW_SUPPORTED - fprintf(stderr, " -dct int Use integer DCT method%s\n", - (JDCT_DEFAULT == JDCT_ISLOW ? " (default)" : "")); -#endif -#ifdef DCT_IFAST_SUPPORTED - fprintf(stderr, " -dct fast Use fast integer DCT (less accurate)%s\n", - (JDCT_DEFAULT == JDCT_IFAST ? " (default)" : "")); -#endif -#ifdef DCT_FLOAT_SUPPORTED - fprintf(stderr, " -dct float Use floating-point DCT method%s\n", - (JDCT_DEFAULT == JDCT_FLOAT ? " (default)" : "")); -#endif - fprintf(stderr, " -dither fs Use F-S dithering (default)\n"); - fprintf(stderr, " -dither none Don't use dithering in quantization\n"); - fprintf(stderr, " -dither ordered Use ordered dither (medium speed, quality)\n"); -#ifdef QUANT_2PASS_SUPPORTED - fprintf(stderr, " -map FILE Map to colors used in named image file\n"); -#endif - fprintf(stderr, " -nosmooth Don't use high-quality upsampling\n"); -#ifdef QUANT_1PASS_SUPPORTED - fprintf(stderr, " -onepass Use 1-pass quantization (fast, low quality)\n"); -#endif - fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); - fprintf(stderr, " -outfile name Specify name for output file\n"); - fprintf(stderr, " -verbose or -debug Emit debug output\n"); - exit(EXIT_FAILURE); -} - - -LOCAL(int) -parse_switches (j_decompress_ptr cinfo, int argc, char **argv, - int last_file_arg_seen, boolean for_real) -/* Parse optional switches. - * Returns argv[] index of first file-name argument (== argc if none). - * Any file names with indexes <= last_file_arg_seen are ignored; - * they have presumably been processed in a previous iteration. - * (Pass 0 for last_file_arg_seen on the first or only iteration.) - * for_real is FALSE on the first (dummy) pass; we may skip any expensive - * processing. - */ -{ - int argn; - char * arg; - - /* Set up default JPEG parameters. */ - requested_fmt = DEFAULT_FMT; /* set default output file format */ - outfilename = NULL; - cinfo->err->trace_level = 0; - - /* Scan command line options, adjust parameters */ - - for (argn = 1; argn < argc; argn++) { - arg = argv[argn]; - if (*arg != '-') { - /* Not a switch, must be a file name argument */ - if (argn <= last_file_arg_seen) { - outfilename = NULL; /* -outfile applies to just one input file */ - continue; /* ignore this name if previously processed */ - } - break; /* else done parsing switches */ - } - arg++; /* advance past switch marker character */ - - if (keymatch(arg, "bmp", 1)) { - /* BMP output format. */ - requested_fmt = FMT_BMP; - - } else if (keymatch(arg, "colors", 1) || keymatch(arg, "colours", 1) || - keymatch(arg, "quantize", 1) || keymatch(arg, "quantise", 1)) { - /* Do color quantization. */ - int val; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%d", &val) != 1) - usage(); - cinfo->desired_number_of_colors = val; - cinfo->quantize_colors = TRUE; - - } else if (keymatch(arg, "dct", 2)) { - /* Select IDCT algorithm. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (keymatch(argv[argn], "int", 1)) { - cinfo->dct_method = JDCT_ISLOW; - } else if (keymatch(argv[argn], "fast", 2)) { - cinfo->dct_method = JDCT_IFAST; - } else if (keymatch(argv[argn], "float", 2)) { - cinfo->dct_method = JDCT_FLOAT; - } else - usage(); - - } else if (keymatch(arg, "dither", 2)) { - /* Select dithering algorithm. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (keymatch(argv[argn], "fs", 2)) { - cinfo->dither_mode = JDITHER_FS; - } else if (keymatch(argv[argn], "none", 2)) { - cinfo->dither_mode = JDITHER_NONE; - } else if (keymatch(argv[argn], "ordered", 2)) { - cinfo->dither_mode = JDITHER_ORDERED; - } else - usage(); - - } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { - /* Enable debug printouts. */ - /* On first -d, print version identification */ - static boolean printed_version = FALSE; - - if (! printed_version) { - fprintf(stderr, "Independent JPEG Group's DJPEG, version %s\n%s\n", - JVERSION, JCOPYRIGHT); - printed_version = TRUE; - } - cinfo->err->trace_level++; - - } else if (keymatch(arg, "fast", 1)) { - /* Select recommended processing options for quick-and-dirty output. */ - cinfo->two_pass_quantize = FALSE; - cinfo->dither_mode = JDITHER_ORDERED; - if (! cinfo->quantize_colors) /* don't override an earlier -colors */ - cinfo->desired_number_of_colors = 216; - cinfo->dct_method = JDCT_FASTEST; - cinfo->do_fancy_upsampling = FALSE; - - } else if (keymatch(arg, "gif", 1)) { - /* GIF output format. */ - requested_fmt = FMT_GIF; - - } else if (keymatch(arg, "grayscale", 2) || keymatch(arg, "greyscale",2)) { - /* Force monochrome output. */ - cinfo->out_color_space = JCS_GRAYSCALE; - - } else if (keymatch(arg, "map", 3)) { - /* Quantize to a color map taken from an input file. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (for_real) { /* too expensive to do twice! */ -#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */ - FILE * mapfile; - - if ((mapfile = fopen(argv[argn], READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); - exit(EXIT_FAILURE); - } - read_color_map(cinfo, mapfile); - fclose(mapfile); - cinfo->quantize_colors = TRUE; -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } - - } else if (keymatch(arg, "maxmemory", 3)) { - /* Maximum memory in Kb (or Mb with 'm'). */ - long lval; - char ch = 'x'; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) - usage(); - if (ch == 'm' || ch == 'M') - lval *= 1000L; - cinfo->mem->max_memory_to_use = lval * 1000L; - - } else if (keymatch(arg, "nosmooth", 3)) { - /* Suppress fancy upsampling */ - cinfo->do_fancy_upsampling = FALSE; - - } else if (keymatch(arg, "onepass", 3)) { - /* Use fast one-pass quantization. */ - cinfo->two_pass_quantize = FALSE; - - } else if (keymatch(arg, "os2", 3)) { - /* BMP output format (OS/2 flavor). */ - requested_fmt = FMT_OS2; - - } else if (keymatch(arg, "outfile", 4)) { - /* Set output file name. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - outfilename = argv[argn]; /* save it away for later use */ - - } else if (keymatch(arg, "pnm", 1) || keymatch(arg, "ppm", 1)) { - /* PPM/PGM output format. */ - requested_fmt = FMT_PPM; - - } else if (keymatch(arg, "rle", 1)) { - /* RLE output format. */ - requested_fmt = FMT_RLE; - - } else if (keymatch(arg, "scale", 1)) { - /* Scale the output image by a fraction M/N. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%d/%d", - &cinfo->scale_num, &cinfo->scale_denom) != 2) - usage(); - - } else if (keymatch(arg, "targa", 1)) { - /* Targa output format. */ - requested_fmt = FMT_TARGA; - - } else { - usage(); /* bogus switch */ - } - } - - return argn; /* return index of next arg (file name) */ -} - - -/* - * Marker processor for COM and interesting APPn markers. - * This replaces the library's built-in processor, which just skips the marker. - * We want to print out the marker as text, to the extent possible. - * Note this code relies on a non-suspending data source. - */ - -LOCAL(unsigned int) -jpeg_getc (j_decompress_ptr cinfo) -/* Read next byte */ -{ - struct jpeg_source_mgr * datasrc = cinfo->src; - - if (datasrc->bytes_in_buffer == 0) { - if (! (*datasrc->fill_input_buffer) (cinfo)) - ERREXIT(cinfo, JERR_CANT_SUSPEND); - } - datasrc->bytes_in_buffer--; - return GETJOCTET(*datasrc->next_input_byte++); -} - - -METHODDEF(boolean) -print_text_marker (j_decompress_ptr cinfo) -{ - boolean traceit = (cinfo->err->trace_level >= 1); - INT32 length; - unsigned int ch; - unsigned int lastch = 0; - - length = jpeg_getc(cinfo) << 8; - length += jpeg_getc(cinfo); - length -= 2; /* discount the length word itself */ - - if (traceit) { - if (cinfo->unread_marker == JPEG_COM) - fprintf(stderr, "Comment, length %ld:\n", (long) length); - else /* assume it is an APPn otherwise */ - fprintf(stderr, "APP%d, length %ld:\n", - cinfo->unread_marker - JPEG_APP0, (long) length); - } - - while (--length >= 0) { - ch = jpeg_getc(cinfo); - if (traceit) { - /* Emit the character in a readable form. - * Nonprintables are converted to \nnn form, - * while \ is converted to \\. - * Newlines in CR, CR/LF, or LF form will be printed as one newline. - */ - if (ch == '\r') { - fprintf(stderr, "\n"); - } else if (ch == '\n') { - if (lastch != '\r') - fprintf(stderr, "\n"); - } else if (ch == '\\') { - fprintf(stderr, "\\\\"); - } else if (isprint(ch)) { - putc(ch, stderr); - } else { - fprintf(stderr, "\\%03o", ch); - } - lastch = ch; - } - } - - if (traceit) - fprintf(stderr, "\n"); - - return TRUE; -} - - -/* - * The main program. - */ - -int -main (int argc, char **argv) -{ - struct jpeg_decompress_struct cinfo; - struct jpeg_error_mgr jerr; -#ifdef PROGRESS_REPORT - struct cdjpeg_progress_mgr progress; -#endif - int file_index; - djpeg_dest_ptr dest_mgr = NULL; - FILE * input_file; - FILE * output_file; - JDIMENSION num_scanlines; - - /* On Mac, fetch a command line. */ -#ifdef USE_CCOMMAND - argc = ccommand(&argv); -#endif - - progname = argv[0]; - if (progname == NULL || progname[0] == 0) - progname = "djpeg"; /* in case C library doesn't provide it */ - - /* Initialize the JPEG decompression object with default error handling. */ - cinfo.err = jpeg_std_error(&jerr); - jpeg_create_decompress(&cinfo); - /* Add some application-specific error messages (from cderror.h) */ - jerr.addon_message_table = cdjpeg_message_table; - jerr.first_addon_message = JMSG_FIRSTADDONCODE; - jerr.last_addon_message = JMSG_LASTADDONCODE; - - /* Insert custom marker processor for COM and APP12. - * APP12 is used by some digital camera makers for textual info, - * so we provide the ability to display it as text. - * If you like, additional APPn marker types can be selected for display, - * but don't try to override APP0 or APP14 this way (see libjpeg.doc). - */ - jpeg_set_marker_processor(&cinfo, JPEG_COM, print_text_marker); - jpeg_set_marker_processor(&cinfo, JPEG_APP0+12, print_text_marker); - - /* Now safe to enable signal catcher. */ -#ifdef NEED_SIGNAL_CATCHER - enable_signal_catcher((j_common_ptr) &cinfo); -#endif - - /* Scan command line to find file names. */ - /* It is convenient to use just one switch-parsing routine, but the switch - * values read here are ignored; we will rescan the switches after opening - * the input file. - * (Exception: tracing level set here controls verbosity for COM markers - * found during jpeg_read_header...) - */ - - file_index = parse_switches(&cinfo, argc, argv, 0, FALSE); - -#ifdef TWO_FILE_COMMANDLINE - /* Must have either -outfile switch or explicit output file name */ - if (outfilename == NULL) { - if (file_index != argc-2) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - outfilename = argv[file_index+1]; - } else { - if (file_index != argc-1) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - } -#else - /* Unix style: expect zero or one file name */ - if (file_index < argc-1) { - fprintf(stderr, "%s: only one input file\n", progname); - usage(); - } -#endif /* TWO_FILE_COMMANDLINE */ - - /* Open the input file. */ - if (file_index < argc) { - if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); - exit(EXIT_FAILURE); - } - } else { - /* default input file is stdin */ - input_file = read_stdin(); - } - - /* Open the output file. */ - if (outfilename != NULL) { - if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, outfilename); - exit(EXIT_FAILURE); - } - } else { - /* default output file is stdout */ - output_file = write_stdout(); - } - -#ifdef PROGRESS_REPORT - start_progress_monitor((j_common_ptr) &cinfo, &progress); -#endif - - /* Specify data source for decompression */ - jpeg_stdio_src(&cinfo, input_file); - - /* Read file header, set default decompression parameters */ - (void) jpeg_read_header(&cinfo, TRUE); - - /* Adjust default decompression parameters by re-parsing the options */ - file_index = parse_switches(&cinfo, argc, argv, 0, TRUE); - - /* Initialize the output module now to let it override any crucial - * option settings (for instance, GIF wants to force color quantization). - */ - switch (requested_fmt) { -#ifdef BMP_SUPPORTED - case FMT_BMP: - dest_mgr = jinit_write_bmp(&cinfo, FALSE); - break; - case FMT_OS2: - dest_mgr = jinit_write_bmp(&cinfo, TRUE); - break; -#endif -#ifdef GIF_SUPPORTED - case FMT_GIF: - dest_mgr = jinit_write_gif(&cinfo); - break; -#endif -#ifdef PPM_SUPPORTED - case FMT_PPM: - dest_mgr = jinit_write_ppm(&cinfo); - break; -#endif -#ifdef RLE_SUPPORTED - case FMT_RLE: - dest_mgr = jinit_write_rle(&cinfo); - break; -#endif -#ifdef TARGA_SUPPORTED - case FMT_TARGA: - dest_mgr = jinit_write_targa(&cinfo); - break; -#endif - default: - ERREXIT(&cinfo, JERR_UNSUPPORTED_FORMAT); - break; - } - dest_mgr->output_file = output_file; - - /* Start decompressor */ - (void) jpeg_start_decompress(&cinfo); - - /* Write output file header */ - (*dest_mgr->start_output) (&cinfo, dest_mgr); - - /* Process data */ - while (cinfo.output_scanline < cinfo.output_height) { - num_scanlines = jpeg_read_scanlines(&cinfo, dest_mgr->buffer, - dest_mgr->buffer_height); - (*dest_mgr->put_pixel_rows) (&cinfo, dest_mgr, num_scanlines); - } - -#ifdef PROGRESS_REPORT - /* Hack: count final pass as done in case finish_output does an extra pass. - * The library won't have updated completed_passes. - */ - progress.pub.completed_passes = progress.pub.total_passes; -#endif - - /* Finish decompression and release memory. - * I must do it in this order because output module has allocated memory - * of lifespan JPOOL_IMAGE; it needs to finish before releasing memory. - */ - (*dest_mgr->finish_output) (&cinfo, dest_mgr); - (void) jpeg_finish_decompress(&cinfo); - jpeg_destroy_decompress(&cinfo); - - /* Close files, if we opened them */ - if (input_file != stdin) - fclose(input_file); - if (output_file != stdout) - fclose(output_file); - -#ifdef PROGRESS_REPORT - end_progress_monitor((j_common_ptr) &cinfo); -#endif - - /* All done. */ - exit(jerr.num_warnings ? EXIT_WARNING : EXIT_SUCCESS); - return 0; /* suppress no-return-value warnings */ -} diff --git a/project/jni/jpeg/example.c b/project/jni/jpeg/example.c deleted file mode 100644 index 7fc354f04..000000000 --- a/project/jni/jpeg/example.c +++ /dev/null @@ -1,433 +0,0 @@ -/* - * example.c - * - * This file illustrates how to use the IJG code as a subroutine library - * to read or write JPEG image files. You should look at this code in - * conjunction with the documentation file libjpeg.doc. - * - * This code will not do anything useful as-is, but it may be helpful as a - * skeleton for constructing routines that call the JPEG library. - * - * We present these routines in the same coding style used in the JPEG code - * (ANSI function definitions, etc); but you are of course free to code your - * routines in a different style if you prefer. - */ - -#include - -/* - * Include file for users of JPEG library. - * You will need to have included system headers that define at least - * the typedefs FILE and size_t before you can include jpeglib.h. - * (stdio.h is sufficient on ANSI-conforming systems.) - * You may also wish to include "jerror.h". - */ - -#include "jpeglib.h" - -/* - * is used for the optional error recovery mechanism shown in - * the second part of the example. - */ - -#include - - - -/******************** JPEG COMPRESSION SAMPLE INTERFACE *******************/ - -/* This half of the example shows how to feed data into the JPEG compressor. - * We present a minimal version that does not worry about refinements such - * as error recovery (the JPEG code will just exit() if it gets an error). - */ - - -/* - * IMAGE DATA FORMATS: - * - * The standard input image format is a rectangular array of pixels, with - * each pixel having the same number of "component" values (color channels). - * Each pixel row is an array of JSAMPLEs (which typically are unsigned chars). - * If you are working with color data, then the color values for each pixel - * must be adjacent in the row; for example, R,G,B,R,G,B,R,G,B,... for 24-bit - * RGB color. - * - * For this example, we'll assume that this data structure matches the way - * our application has stored the image in memory, so we can just pass a - * pointer to our image buffer. In particular, let's say that the image is - * RGB color and is described by: - */ - -extern JSAMPLE * image_buffer; /* Points to large array of R,G,B-order data */ -extern int image_height; /* Number of rows in image */ -extern int image_width; /* Number of columns in image */ - - -/* - * Sample routine for JPEG compression. We assume that the target file name - * and a compression quality factor are passed in. - */ - -GLOBAL(void) -write_JPEG_file (char * filename, int quality) -{ - /* This struct contains the JPEG compression parameters and pointers to - * working space (which is allocated as needed by the JPEG library). - * It is possible to have several such structures, representing multiple - * compression/decompression processes, in existence at once. We refer - * to any one struct (and its associated working data) as a "JPEG object". - */ - struct jpeg_compress_struct cinfo; - /* This struct represents a JPEG error handler. It is declared separately - * because applications often want to supply a specialized error handler - * (see the second half of this file for an example). But here we just - * take the easy way out and use the standard error handler, which will - * print a message on stderr and call exit() if compression fails. - * Note that this struct must live as long as the main JPEG parameter - * struct, to avoid dangling-pointer problems. - */ - struct jpeg_error_mgr jerr; - /* More stuff */ - FILE * outfile; /* target file */ - JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */ - int row_stride; /* physical row width in image buffer */ - - /* Step 1: allocate and initialize JPEG compression object */ - - /* We have to set up the error handler first, in case the initialization - * step fails. (Unlikely, but it could happen if you are out of memory.) - * This routine fills in the contents of struct jerr, and returns jerr's - * address which we place into the link field in cinfo. - */ - cinfo.err = jpeg_std_error(&jerr); - /* Now we can initialize the JPEG compression object. */ - jpeg_create_compress(&cinfo); - - /* Step 2: specify data destination (eg, a file) */ - /* Note: steps 2 and 3 can be done in either order. */ - - /* Here we use the library-supplied code to send compressed data to a - * stdio stream. You can also write your own code to do something else. - * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that - * requires it in order to write binary files. - */ - if ((outfile = fopen(filename, "wb")) == NULL) { - fprintf(stderr, "can't open %s\n", filename); - exit(1); - } - jpeg_stdio_dest(&cinfo, outfile); - - /* Step 3: set parameters for compression */ - - /* First we supply a description of the input image. - * Four fields of the cinfo struct must be filled in: - */ - cinfo.image_width = image_width; /* image width and height, in pixels */ - cinfo.image_height = image_height; - cinfo.input_components = 3; /* # of color components per pixel */ - cinfo.in_color_space = JCS_RGB; /* colorspace of input image */ - /* Now use the library's routine to set default compression parameters. - * (You must set at least cinfo.in_color_space before calling this, - * since the defaults depend on the source color space.) - */ - jpeg_set_defaults(&cinfo); - /* Now you can set any non-default parameters you wish to. - * Here we just illustrate the use of quality (quantization table) scaling: - */ - jpeg_set_quality(&cinfo, quality, TRUE /* limit to baseline-JPEG values */); - - /* Step 4: Start compressor */ - - /* TRUE ensures that we will write a complete interchange-JPEG file. - * Pass TRUE unless you are very sure of what you're doing. - */ - jpeg_start_compress(&cinfo, TRUE); - - /* Step 5: while (scan lines remain to be written) */ - /* jpeg_write_scanlines(...); */ - - /* Here we use the library's state variable cinfo.next_scanline as the - * loop counter, so that we don't have to keep track ourselves. - * To keep things simple, we pass one scanline per call; you can pass - * more if you wish, though. - */ - row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */ - - while (cinfo.next_scanline < cinfo.image_height) { - /* jpeg_write_scanlines expects an array of pointers to scanlines. - * Here the array is only one element long, but you could pass - * more than one scanline at a time if that's more convenient. - */ - row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride]; - (void) jpeg_write_scanlines(&cinfo, row_pointer, 1); - } - - /* Step 6: Finish compression */ - - jpeg_finish_compress(&cinfo); - /* After finish_compress, we can close the output file. */ - fclose(outfile); - - /* Step 7: release JPEG compression object */ - - /* This is an important step since it will release a good deal of memory. */ - jpeg_destroy_compress(&cinfo); - - /* And we're done! */ -} - - -/* - * SOME FINE POINTS: - * - * In the above loop, we ignored the return value of jpeg_write_scanlines, - * which is the number of scanlines actually written. We could get away - * with this because we were only relying on the value of cinfo.next_scanline, - * which will be incremented correctly. If you maintain additional loop - * variables then you should be careful to increment them properly. - * Actually, for output to a stdio stream you needn't worry, because - * then jpeg_write_scanlines will write all the lines passed (or else exit - * with a fatal error). Partial writes can only occur if you use a data - * destination module that can demand suspension of the compressor. - * (If you don't know what that's for, you don't need it.) - * - * If the compressor requires full-image buffers (for entropy-coding - * optimization or a multi-scan JPEG file), it will create temporary - * files for anything that doesn't fit within the maximum-memory setting. - * (Note that temp files are NOT needed if you use the default parameters.) - * On some systems you may need to set up a signal handler to ensure that - * temporary files are deleted if the program is interrupted. See libjpeg.doc. - * - * Scanlines MUST be supplied in top-to-bottom order if you want your JPEG - * files to be compatible with everyone else's. If you cannot readily read - * your data in that order, you'll need an intermediate array to hold the - * image. See rdtarga.c or rdbmp.c for examples of handling bottom-to-top - * source data using the JPEG code's internal virtual-array mechanisms. - */ - - - -/******************** JPEG DECOMPRESSION SAMPLE INTERFACE *******************/ - -/* This half of the example shows how to read data from the JPEG decompressor. - * It's a bit more refined than the above, in that we show: - * (a) how to modify the JPEG library's standard error-reporting behavior; - * (b) how to allocate workspace using the library's memory manager. - * - * Just to make this example a little different from the first one, we'll - * assume that we do not intend to put the whole image into an in-memory - * buffer, but to send it line-by-line someplace else. We need a one- - * scanline-high JSAMPLE array as a work buffer, and we will let the JPEG - * memory manager allocate it for us. This approach is actually quite useful - * because we don't need to remember to deallocate the buffer separately: it - * will go away automatically when the JPEG object is cleaned up. - */ - - -/* - * ERROR HANDLING: - * - * The JPEG library's standard error handler (jerror.c) is divided into - * several "methods" which you can override individually. This lets you - * adjust the behavior without duplicating a lot of code, which you might - * have to update with each future release. - * - * Our example here shows how to override the "error_exit" method so that - * control is returned to the library's caller when a fatal error occurs, - * rather than calling exit() as the standard error_exit method does. - * - * We use C's setjmp/longjmp facility to return control. This means that the - * routine which calls the JPEG library must first execute a setjmp() call to - * establish the return point. We want the replacement error_exit to do a - * longjmp(). But we need to make the setjmp buffer accessible to the - * error_exit routine. To do this, we make a private extension of the - * standard JPEG error handler object. (If we were using C++, we'd say we - * were making a subclass of the regular error handler.) - * - * Here's the extended error handler struct: - */ - -struct my_error_mgr { - struct jpeg_error_mgr pub; /* "public" fields */ - - jmp_buf setjmp_buffer; /* for return to caller */ -}; - -typedef struct my_error_mgr * my_error_ptr; - -/* - * Here's the routine that will replace the standard error_exit method: - */ - -METHODDEF(void) -my_error_exit (j_common_ptr cinfo) -{ - /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */ - my_error_ptr myerr = (my_error_ptr) cinfo->err; - - /* Always display the message. */ - /* We could postpone this until after returning, if we chose. */ - (*cinfo->err->output_message) (cinfo); - - /* Return control to the setjmp point */ - longjmp(myerr->setjmp_buffer, 1); -} - - -/* - * Sample routine for JPEG decompression. We assume that the source file name - * is passed in. We want to return 1 on success, 0 on error. - */ - - -GLOBAL(int) -read_JPEG_file (char * filename) -{ - /* This struct contains the JPEG decompression parameters and pointers to - * working space (which is allocated as needed by the JPEG library). - */ - struct jpeg_decompress_struct cinfo; - /* We use our private extension JPEG error handler. - * Note that this struct must live as long as the main JPEG parameter - * struct, to avoid dangling-pointer problems. - */ - struct my_error_mgr jerr; - /* More stuff */ - FILE * infile; /* source file */ - JSAMPARRAY buffer; /* Output row buffer */ - int row_stride; /* physical row width in output buffer */ - - /* In this example we want to open the input file before doing anything else, - * so that the setjmp() error recovery below can assume the file is open. - * VERY IMPORTANT: use "b" option to fopen() if you are on a machine that - * requires it in order to read binary files. - */ - - if ((infile = fopen(filename, "rb")) == NULL) { - fprintf(stderr, "can't open %s\n", filename); - return 0; - } - - /* Step 1: allocate and initialize JPEG decompression object */ - - /* We set up the normal JPEG error routines, then override error_exit. */ - cinfo.err = jpeg_std_error(&jerr.pub); - jerr.pub.error_exit = my_error_exit; - /* Establish the setjmp return context for my_error_exit to use. */ - if (setjmp(jerr.setjmp_buffer)) { - /* If we get here, the JPEG code has signaled an error. - * We need to clean up the JPEG object, close the input file, and return. - */ - jpeg_destroy_decompress(&cinfo); - fclose(infile); - return 0; - } - /* Now we can initialize the JPEG decompression object. */ - jpeg_create_decompress(&cinfo); - - /* Step 2: specify data source (eg, a file) */ - - jpeg_stdio_src(&cinfo, infile); - - /* Step 3: read file parameters with jpeg_read_header() */ - - (void) jpeg_read_header(&cinfo, TRUE); - /* We can ignore the return value from jpeg_read_header since - * (a) suspension is not possible with the stdio data source, and - * (b) we passed TRUE to reject a tables-only JPEG file as an error. - * See libjpeg.doc for more info. - */ - - /* Step 4: set parameters for decompression */ - - /* In this example, we don't need to change any of the defaults set by - * jpeg_read_header(), so we do nothing here. - */ - - /* Step 5: Start decompressor */ - - (void) jpeg_start_decompress(&cinfo); - /* We can ignore the return value since suspension is not possible - * with the stdio data source. - */ - - /* We may need to do some setup of our own at this point before reading - * the data. After jpeg_start_decompress() we have the correct scaled - * output image dimensions available, as well as the output colormap - * if we asked for color quantization. - * In this example, we need to make an output work buffer of the right size. - */ - /* JSAMPLEs per row in output buffer */ - row_stride = cinfo.output_width * cinfo.output_components; - /* Make a one-row-high sample array that will go away when done with image */ - buffer = (*cinfo.mem->alloc_sarray) - ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1); - - /* Step 6: while (scan lines remain to be read) */ - /* jpeg_read_scanlines(...); */ - - /* Here we use the library's state variable cinfo.output_scanline as the - * loop counter, so that we don't have to keep track ourselves. - */ - while (cinfo.output_scanline < cinfo.output_height) { - /* jpeg_read_scanlines expects an array of pointers to scanlines. - * Here the array is only one element long, but you could ask for - * more than one scanline at a time if that's more convenient. - */ - (void) jpeg_read_scanlines(&cinfo, buffer, 1); - /* Assume put_scanline_someplace wants a pointer and sample count. */ - put_scanline_someplace(buffer[0], row_stride); - } - - /* Step 7: Finish decompression */ - - (void) jpeg_finish_decompress(&cinfo); - /* We can ignore the return value since suspension is not possible - * with the stdio data source. - */ - - /* Step 8: Release JPEG decompression object */ - - /* This is an important step since it will release a good deal of memory. */ - jpeg_destroy_decompress(&cinfo); - - /* After finish_decompress, we can close the input file. - * Here we postpone it until after no more JPEG errors are possible, - * so as to simplify the setjmp error logic above. (Actually, I don't - * think that jpeg_destroy can do an error exit, but why assume anything...) - */ - fclose(infile); - - /* At this point you may want to check to see whether any corrupt-data - * warnings occurred (test whether jerr.pub.num_warnings is nonzero). - */ - - /* And we're done! */ - return 1; -} - - -/* - * SOME FINE POINTS: - * - * In the above code, we ignored the return value of jpeg_read_scanlines, - * which is the number of scanlines actually read. We could get away with - * this because we asked for only one line at a time and we weren't using - * a suspending data source. See libjpeg.doc for more info. - * - * We cheated a bit by calling alloc_sarray() after jpeg_start_decompress(); - * we should have done it beforehand to ensure that the space would be - * counted against the JPEG max_memory setting. In some systems the above - * code would risk an out-of-memory error. However, in general we don't - * know the output image dimensions before jpeg_start_decompress(), unless we - * call jpeg_calc_output_dimensions(). See libjpeg.doc for more about this. - * - * Scanlines are returned in the same order as they appear in the JPEG file, - * which is standardly top-to-bottom. If you must emit data bottom-to-top, - * you can use one of the virtual arrays provided by the JPEG memory manager - * to invert the data. See wrbmp.c for an example. - * - * As with compression, some operating modes may require temporary files. - * On some systems you may need to set up a signal handler to ensure that - * temporary files are deleted if the program is interrupted. See libjpeg.doc. - */ diff --git a/project/jni/jpeg/filelist.doc b/project/jni/jpeg/filelist.doc deleted file mode 100644 index e14982ca5..000000000 --- a/project/jni/jpeg/filelist.doc +++ /dev/null @@ -1,210 +0,0 @@ -IJG JPEG LIBRARY: FILE LIST - -Copyright (C) 1994-1998, Thomas G. Lane. -This file is part of the Independent JPEG Group's software. -For conditions of distribution and use, see the accompanying README file. - - -Here is a road map to the files in the IJG JPEG distribution. The -distribution includes the JPEG library proper, plus two application -programs ("cjpeg" and "djpeg") which use the library to convert JPEG -files to and from some other popular image formats. A third application -"jpegtran" uses the library to do lossless conversion between different -variants of JPEG. There are also two stand-alone applications, -"rdjpgcom" and "wrjpgcom". - - -THE JPEG LIBRARY -================ - -Include files: - -jpeglib.h JPEG library's exported data and function declarations. -jconfig.h Configuration declarations. Note: this file is not present - in the distribution; it is generated during installation. -jmorecfg.h Additional configuration declarations; need not be changed - for a standard installation. -jerror.h Declares JPEG library's error and trace message codes. -jinclude.h Central include file used by all IJG .c files to reference - system include files. -jpegint.h JPEG library's internal data structures. -jchuff.h Private declarations for Huffman encoder modules. -jdhuff.h Private declarations for Huffman decoder modules. -jdct.h Private declarations for forward & reverse DCT subsystems. -jmemsys.h Private declarations for memory management subsystem. -jversion.h Version information. - -Applications using the library should include jpeglib.h (which in turn -includes jconfig.h and jmorecfg.h). Optionally, jerror.h may be included -if the application needs to reference individual JPEG error codes. The -other include files are intended for internal use and would not normally -be included by an application program. (cjpeg/djpeg/etc do use jinclude.h, -since its function is to improve portability of the whole IJG distribution. -Most other applications will directly include the system include files they -want, and hence won't need jinclude.h.) - - -C source code files: - -These files contain most of the functions intended to be called directly by -an application program: - -jcapimin.c Application program interface: core routines for compression. -jcapistd.c Application program interface: standard compression. -jdapimin.c Application program interface: core routines for decompression. -jdapistd.c Application program interface: standard decompression. -jcomapi.c Application program interface routines common to compression - and decompression. -jcparam.c Compression parameter setting helper routines. -jctrans.c API and library routines for transcoding compression. -jdtrans.c API and library routines for transcoding decompression. - -Compression side of the library: - -jcinit.c Initialization: determines which other modules to use. -jcmaster.c Master control: setup and inter-pass sequencing logic. -jcmainct.c Main buffer controller (preprocessor => JPEG compressor). -jcprepct.c Preprocessor buffer controller. -jccoefct.c Buffer controller for DCT coefficient buffer. -jccolor.c Color space conversion. -jcsample.c Downsampling. -jcdctmgr.c DCT manager (DCT implementation selection & control). -jfdctint.c Forward DCT using slow-but-accurate integer method. -jfdctfst.c Forward DCT using faster, less accurate integer method. -jfdctflt.c Forward DCT using floating-point arithmetic. -jchuff.c Huffman entropy coding for sequential JPEG. -jcphuff.c Huffman entropy coding for progressive JPEG. -jcmarker.c JPEG marker writing. -jdatadst.c Data destination manager for stdio output. - -Decompression side of the library: - -jdmaster.c Master control: determines which other modules to use. -jdinput.c Input controller: controls input processing modules. -jdmainct.c Main buffer controller (JPEG decompressor => postprocessor). -jdcoefct.c Buffer controller for DCT coefficient buffer. -jdpostct.c Postprocessor buffer controller. -jdmarker.c JPEG marker reading. -jdhuff.c Huffman entropy decoding for sequential JPEG. -jdphuff.c Huffman entropy decoding for progressive JPEG. -jddctmgr.c IDCT manager (IDCT implementation selection & control). -jidctint.c Inverse DCT using slow-but-accurate integer method. -jidctfst.c Inverse DCT using faster, less accurate integer method. -jidctflt.c Inverse DCT using floating-point arithmetic. -jidctred.c Inverse DCTs with reduced-size outputs. -jdsample.c Upsampling. -jdcolor.c Color space conversion. -jdmerge.c Merged upsampling/color conversion (faster, lower quality). -jquant1.c One-pass color quantization using a fixed-spacing colormap. -jquant2.c Two-pass color quantization using a custom-generated colormap. - Also handles one-pass quantization to an externally given map. -jdatasrc.c Data source manager for stdio input. - -Support files for both compression and decompression: - -jerror.c Standard error handling routines (application replaceable). -jmemmgr.c System-independent (more or less) memory management code. -jutils.c Miscellaneous utility routines. - -jmemmgr.c relies on a system-dependent memory management module. The IJG -distribution includes the following implementations of the system-dependent -module: - -jmemnobs.c "No backing store": assumes adequate virtual memory exists. -jmemansi.c Makes temporary files with ANSI-standard routine tmpfile(). -jmemname.c Makes temporary files with program-generated file names. -jmemdos.c Custom implementation for MS-DOS (16-bit environment only): - can use extended and expanded memory as well as temp files. -jmemmac.c Custom implementation for Apple Macintosh. - -Exactly one of the system-dependent modules should be configured into an -installed JPEG library (see install.doc for hints about which one to use). -On unusual systems you may find it worthwhile to make a special -system-dependent memory manager. - - -Non-C source code files: - -jmemdosa.asm 80x86 assembly code support for jmemdos.c; used only in - MS-DOS-specific configurations of the JPEG library. - - -CJPEG/DJPEG/JPEGTRAN -==================== - -Include files: - -cdjpeg.h Declarations shared by cjpeg/djpeg/jpegtran modules. -cderror.h Additional error and trace message codes for cjpeg et al. -transupp.h Declarations for jpegtran support routines in transupp.c. - -C source code files: - -cjpeg.c Main program for cjpeg. -djpeg.c Main program for djpeg. -jpegtran.c Main program for jpegtran. -cdjpeg.c Utility routines used by all three programs. -rdcolmap.c Code to read a colormap file for djpeg's "-map" switch. -rdswitch.c Code to process some of cjpeg's more complex switches. - Also used by jpegtran. -transupp.c Support code for jpegtran: lossless image manipulations. - -Image file reader modules for cjpeg: - -rdbmp.c BMP file input. -rdgif.c GIF file input (now just a stub). -rdppm.c PPM/PGM file input. -rdrle.c Utah RLE file input. -rdtarga.c Targa file input. - -Image file writer modules for djpeg: - -wrbmp.c BMP file output. -wrgif.c GIF file output (a mere shadow of its former self). -wrppm.c PPM/PGM file output. -wrrle.c Utah RLE file output. -wrtarga.c Targa file output. - - -RDJPGCOM/WRJPGCOM -================= - -C source code files: - -rdjpgcom.c Stand-alone rdjpgcom application. -wrjpgcom.c Stand-alone wrjpgcom application. - -These programs do not depend on the IJG library. They do use -jconfig.h and jinclude.h, only to improve portability. - - -ADDITIONAL FILES -================ - -Documentation (see README for a guide to the documentation files): - -README Master documentation file. -*.doc Other documentation files. -*.1 Documentation in Unix man page format. -change.log Version-to-version change highlights. -example.c Sample code for calling JPEG library. - -Configuration/installation files and programs (see install.doc for more info): - -configure Unix shell script to perform automatic configuration. -ltconfig Support scripts for configure (from GNU libtool). -ltmain.sh -config.guess -config.sub -install-sh Install shell script for those Unix systems lacking one. -ckconfig.c Program to generate jconfig.h on non-Unix systems. -jconfig.doc Template for making jconfig.h by hand. -makefile.* Sample makefiles for particular systems. -jconfig.* Sample jconfig.h for particular systems. -ansi2knr.c De-ANSIfier for pre-ANSI C compilers (courtesy of - L. Peter Deutsch and Aladdin Enterprises). - -Test files (see install.doc for test procedure): - -test*.* Source and comparison files for confidence test. - These are binary image files, NOT text files. diff --git a/project/jni/jpeg/include/jconfig.h b/project/jni/jpeg/include/jconfig.h deleted file mode 100644 index 15a98177b..000000000 --- a/project/jni/jpeg/include/jconfig.h +++ /dev/null @@ -1,156 +0,0 @@ -/* android jconfig.h */ -/* - * jconfig.doc - * - * Copyright (C) 1991-1994, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file documents the configuration options that are required to - * customize the JPEG software for a particular system. - * - * The actual configuration options for a particular installation are stored - * in jconfig.h. On many machines, jconfig.h can be generated automatically - * or copied from one of the "canned" jconfig files that we supply. But if - * you need to generate a jconfig.h file by hand, this file tells you how. - * - * DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING. - * EDIT A COPY NAMED JCONFIG.H. - */ - - -/* - * These symbols indicate the properties of your machine or compiler. - * #define the symbol if yes, #undef it if no. - */ - -/* Does your compiler support function prototypes? - * (If not, you also need to use ansi2knr, see install.doc) - */ -#define HAVE_PROTOTYPES - -/* Does your compiler support the declaration "unsigned char" ? - * How about "unsigned short" ? - */ -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT - -/* Define "void" as "char" if your compiler doesn't know about type void. - * NOTE: be sure to define void such that "void *" represents the most general - * pointer type, e.g., that returned by malloc(). - */ -/* #define void char */ - -/* Define "const" as empty if your compiler doesn't know the "const" keyword. - */ -/* #define const */ - -/* Define this if an ordinary "char" type is unsigned. - * If you're not sure, leaving it undefined will work at some cost in speed. - * If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal. - */ -#undef CHAR_IS_UNSIGNED - -/* Define this if your system has an ANSI-conforming file. - */ -#define HAVE_STDDEF_H - -/* Define this if your system has an ANSI-conforming file. - */ -#define HAVE_STDLIB_H - -/* Define this if your system does not have an ANSI/SysV , - * but does have a BSD-style . - */ -#undef NEED_BSD_STRINGS - -/* Define this if your system does not provide typedef size_t in any of the - * ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in - * instead. - */ -#undef NEED_SYS_TYPES_H - -/* For 80x86 machines, you need to define NEED_FAR_POINTERS, - * unless you are using a large-data memory model or 80386 flat-memory mode. - * On less brain-damaged CPUs this symbol must not be defined. - * (Defining this symbol causes large data structures to be referenced through - * "far" pointers and to be allocated with a special version of malloc.) - */ -#undef NEED_FAR_POINTERS - -/* Define this if your linker needs global names to be unique in less - * than the first 15 characters. - */ -#undef NEED_SHORT_EXTERNAL_NAMES - -/* Although a real ANSI C compiler can deal perfectly well with pointers to - * unspecified structures (see "incomplete types" in the spec), a few pre-ANSI - * and pseudo-ANSI compilers get confused. To keep one of these bozos happy, - * define INCOMPLETE_TYPES_BROKEN. This is not recommended unless you - * actually get "missing structure definition" warnings or errors while - * compiling the JPEG code. - */ -#undef INCOMPLETE_TYPES_BROKEN - - -/* - * The following options affect code selection within the JPEG library, - * but they don't need to be visible to applications using the library. - * To minimize application namespace pollution, the symbols won't be - * defined unless JPEG_INTERNALS has been defined. - */ - -#ifdef JPEG_INTERNALS - -/* Define this if your compiler implements ">>" on signed values as a logical - * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift, - * which is the normal and rational definition. - */ -#undef RIGHT_SHIFT_IS_UNSIGNED - - -#endif /* JPEG_INTERNALS */ - - -/* - * The remaining options do not affect the JPEG library proper, - * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c). - * Other applications can ignore these. - */ - -#ifdef JPEG_CJPEG_DJPEG - -/* These defines indicate which image (non-JPEG) file formats are allowed. */ - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -/* Define this if you want to name both input and output files on the command - * line, rather than using stdout and optionally stdin. You MUST do this if - * your system can't cope with binary I/O to stdin/stdout. See comments at - * head of cjpeg.c or djpeg.c. - */ -#undef TWO_FILE_COMMANDLINE - -/* Define this if your system needs explicit cleanup of temporary files. - * This is crucial under MS-DOS, where the temporary "files" may be areas - * of extended memory; on most other systems it's not as important. - */ -#undef NEED_SIGNAL_CATCHER - -/* By default, we open image files with fopen(...,"rb") or fopen(...,"wb"). - * This is necessary on systems that distinguish text files from binary files, - * and is harmless on most systems that don't. If you have one of the rare - * systems that complains about the "b" spec, define this symbol. - */ -#undef DONT_USE_B_MODE - -/* Define this if you want percent-done progress reports from cjpeg/djpeg. - */ -#undef PROGRESS_REPORT - - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/include/jerror.h b/project/jni/jpeg/include/jerror.h deleted file mode 100644 index fc2fffeac..000000000 --- a/project/jni/jpeg/include/jerror.h +++ /dev/null @@ -1,291 +0,0 @@ -/* - * jerror.h - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file defines the error and message codes for the JPEG library. - * Edit this file to add new codes, or to translate the message strings to - * some other language. - * A set of error-reporting macros are defined too. Some applications using - * the JPEG library may wish to include this file to get the error codes - * and/or the macros. - */ - -/* - * To define the enum list of message codes, include this file without - * defining macro JMESSAGE. To create a message string table, include it - * again with a suitable JMESSAGE definition (see jerror.c for an example). - */ -#ifndef JMESSAGE -#ifndef JERROR_H -/* First time through, define the enum list */ -#define JMAKE_ENUM_LIST -#else -/* Repeated inclusions of this file are no-ops unless JMESSAGE is defined */ -#define JMESSAGE(code,string) -#endif /* JERROR_H */ -#endif /* JMESSAGE */ - -#ifdef JMAKE_ENUM_LIST - -typedef enum { - -#define JMESSAGE(code,string) code , - -#endif /* JMAKE_ENUM_LIST */ - -JMESSAGE(JMSG_NOMESSAGE, "Bogus message code %d") /* Must be first entry! */ - -/* For maintenance convenience, list is alphabetical by message code name */ -JMESSAGE(JERR_ARITH_NOTIMPL, - "Sorry, there are legal restrictions on arithmetic coding") -JMESSAGE(JERR_BAD_ALIGN_TYPE, "ALIGN_TYPE is wrong, please fix") -JMESSAGE(JERR_BAD_ALLOC_CHUNK, "MAX_ALLOC_CHUNK is wrong, please fix") -JMESSAGE(JERR_BAD_BUFFER_MODE, "Bogus buffer control mode") -JMESSAGE(JERR_BAD_COMPONENT_ID, "Invalid component ID %d in SOS") -JMESSAGE(JERR_BAD_DCT_COEF, "DCT coefficient out of range") -JMESSAGE(JERR_BAD_DCTSIZE, "IDCT output block size %d not supported") -JMESSAGE(JERR_BAD_HUFF_TABLE, "Bogus Huffman table definition") -JMESSAGE(JERR_BAD_IN_COLORSPACE, "Bogus input colorspace") -JMESSAGE(JERR_BAD_J_COLORSPACE, "Bogus JPEG colorspace") -JMESSAGE(JERR_BAD_LENGTH, "Bogus marker length") -JMESSAGE(JERR_BAD_LIB_VERSION, - "Wrong JPEG library version: library is %d, caller expects %d") -JMESSAGE(JERR_BAD_MCU_SIZE, "Sampling factors too large for interleaved scan") -JMESSAGE(JERR_BAD_POOL_ID, "Invalid memory pool code %d") -JMESSAGE(JERR_BAD_PRECISION, "Unsupported JPEG data precision %d") -JMESSAGE(JERR_BAD_PROGRESSION, - "Invalid progressive parameters Ss=%d Se=%d Ah=%d Al=%d") -JMESSAGE(JERR_BAD_PROG_SCRIPT, - "Invalid progressive parameters at scan script entry %d") -JMESSAGE(JERR_BAD_SAMPLING, "Bogus sampling factors") -JMESSAGE(JERR_BAD_SCAN_SCRIPT, "Invalid scan script at entry %d") -JMESSAGE(JERR_BAD_STATE, "Improper call to JPEG library in state %d") -JMESSAGE(JERR_BAD_STRUCT_SIZE, - "JPEG parameter struct mismatch: library thinks size is %u, caller expects %u") -JMESSAGE(JERR_BAD_VIRTUAL_ACCESS, "Bogus virtual array access") -JMESSAGE(JERR_BUFFER_SIZE, "Buffer passed to JPEG library is too small") -JMESSAGE(JERR_CANT_SUSPEND, "Suspension not allowed here") -JMESSAGE(JERR_CCIR601_NOTIMPL, "CCIR601 sampling not implemented yet") -JMESSAGE(JERR_COMPONENT_COUNT, "Too many color components: %d, max %d") -JMESSAGE(JERR_CONVERSION_NOTIMPL, "Unsupported color conversion request") -JMESSAGE(JERR_DAC_INDEX, "Bogus DAC index %d") -JMESSAGE(JERR_DAC_VALUE, "Bogus DAC value 0x%x") -JMESSAGE(JERR_DHT_INDEX, "Bogus DHT index %d") -JMESSAGE(JERR_DQT_INDEX, "Bogus DQT index %d") -JMESSAGE(JERR_EMPTY_IMAGE, "Empty JPEG image (DNL not supported)") -JMESSAGE(JERR_EMS_READ, "Read from EMS failed") -JMESSAGE(JERR_EMS_WRITE, "Write to EMS failed") -JMESSAGE(JERR_EOI_EXPECTED, "Didn't expect more than one scan") -JMESSAGE(JERR_FILE_READ, "Input file read error") -JMESSAGE(JERR_FILE_WRITE, "Output file write error --- out of disk space?") -JMESSAGE(JERR_FRACT_SAMPLE_NOTIMPL, "Fractional sampling not implemented yet") -JMESSAGE(JERR_HUFF_CLEN_OVERFLOW, "Huffman code size table overflow") -JMESSAGE(JERR_HUFF_MISSING_CODE, "Missing Huffman code table entry") -JMESSAGE(JERR_IMAGE_TOO_BIG, "Maximum supported image dimension is %u pixels") -JMESSAGE(JERR_INPUT_EMPTY, "Empty input file") -JMESSAGE(JERR_INPUT_EOF, "Premature end of input file") -JMESSAGE(JERR_MISMATCHED_QUANT_TABLE, - "Cannot transcode due to multiple use of quantization table %d") -JMESSAGE(JERR_MISSING_DATA, "Scan script does not transmit all data") -JMESSAGE(JERR_MODE_CHANGE, "Invalid color quantization mode change") -JMESSAGE(JERR_NOTIMPL, "Not implemented yet") -JMESSAGE(JERR_NOT_COMPILED, "Requested feature was omitted at compile time") -JMESSAGE(JERR_NO_BACKING_STORE, "Backing store not supported") -JMESSAGE(JERR_NO_HUFF_TABLE, "Huffman table 0x%02x was not defined") -JMESSAGE(JERR_NO_IMAGE, "JPEG datastream contains no image") -JMESSAGE(JERR_NO_QUANT_TABLE, "Quantization table 0x%02x was not defined") -JMESSAGE(JERR_NO_SOI, "Not a JPEG file: starts with 0x%02x 0x%02x") -JMESSAGE(JERR_OUT_OF_MEMORY, "Insufficient memory (case %d)") -JMESSAGE(JERR_QUANT_COMPONENTS, - "Cannot quantize more than %d color components") -JMESSAGE(JERR_QUANT_FEW_COLORS, "Cannot quantize to fewer than %d colors") -JMESSAGE(JERR_QUANT_MANY_COLORS, "Cannot quantize to more than %d colors") -JMESSAGE(JERR_SOF_DUPLICATE, "Invalid JPEG file structure: two SOF markers") -JMESSAGE(JERR_SOF_NO_SOS, "Invalid JPEG file structure: missing SOS marker") -JMESSAGE(JERR_SOF_UNSUPPORTED, "Unsupported JPEG process: SOF type 0x%02x") -JMESSAGE(JERR_SOI_DUPLICATE, "Invalid JPEG file structure: two SOI markers") -JMESSAGE(JERR_SOS_NO_SOF, "Invalid JPEG file structure: SOS before SOF") -JMESSAGE(JERR_TFILE_CREATE, "Failed to create temporary file %s") -JMESSAGE(JERR_TFILE_READ, "Read failed on temporary file") -JMESSAGE(JERR_TFILE_SEEK, "Seek failed on temporary file") -JMESSAGE(JERR_TFILE_WRITE, - "Write failed on temporary file --- out of disk space?") -JMESSAGE(JERR_TOO_LITTLE_DATA, "Application transferred too few scanlines") -JMESSAGE(JERR_UNKNOWN_MARKER, "Unsupported marker type 0x%02x") -JMESSAGE(JERR_VIRTUAL_BUG, "Virtual array controller messed up") -JMESSAGE(JERR_WIDTH_OVERFLOW, "Image too wide for this implementation") -JMESSAGE(JERR_XMS_READ, "Read from XMS failed") -JMESSAGE(JERR_XMS_WRITE, "Write to XMS failed") -JMESSAGE(JMSG_COPYRIGHT, JCOPYRIGHT) -JMESSAGE(JMSG_VERSION, JVERSION) -JMESSAGE(JTRC_16BIT_TABLES, - "Caution: quantization tables are too coarse for baseline JPEG") -JMESSAGE(JTRC_ADOBE, - "Adobe APP14 marker: version %d, flags 0x%04x 0x%04x, transform %d") -JMESSAGE(JTRC_APP0, "Unknown APP0 marker (not JFIF), length %u") -JMESSAGE(JTRC_APP14, "Unknown APP14 marker (not Adobe), length %u") -JMESSAGE(JTRC_DAC, "Define Arithmetic Table 0x%02x: 0x%02x") -JMESSAGE(JTRC_DHT, "Define Huffman Table 0x%02x") -JMESSAGE(JTRC_DQT, "Define Quantization Table %d precision %d") -JMESSAGE(JTRC_DRI, "Define Restart Interval %u") -JMESSAGE(JTRC_EMS_CLOSE, "Freed EMS handle %u") -JMESSAGE(JTRC_EMS_OPEN, "Obtained EMS handle %u") -JMESSAGE(JTRC_EOI, "End Of Image") -JMESSAGE(JTRC_HUFFBITS, " %3d %3d %3d %3d %3d %3d %3d %3d") -JMESSAGE(JTRC_JFIF, "JFIF APP0 marker: version %d.%02d, density %dx%d %d") -JMESSAGE(JTRC_JFIF_BADTHUMBNAILSIZE, - "Warning: thumbnail image size does not match data length %u") -JMESSAGE(JTRC_JFIF_EXTENSION, - "JFIF extension marker: type 0x%02x, length %u") -JMESSAGE(JTRC_JFIF_THUMBNAIL, " with %d x %d thumbnail image") -JMESSAGE(JTRC_MISC_MARKER, "Miscellaneous marker 0x%02x, length %u") -JMESSAGE(JTRC_PARMLESS_MARKER, "Unexpected marker 0x%02x") -JMESSAGE(JTRC_QUANTVALS, " %4u %4u %4u %4u %4u %4u %4u %4u") -JMESSAGE(JTRC_QUANT_3_NCOLORS, "Quantizing to %d = %d*%d*%d colors") -JMESSAGE(JTRC_QUANT_NCOLORS, "Quantizing to %d colors") -JMESSAGE(JTRC_QUANT_SELECTED, "Selected %d colors for quantization") -JMESSAGE(JTRC_RECOVERY_ACTION, "At marker 0x%02x, recovery action %d") -JMESSAGE(JTRC_RST, "RST%d") -JMESSAGE(JTRC_SMOOTH_NOTIMPL, - "Smoothing not supported with nonstandard sampling ratios") -JMESSAGE(JTRC_SOF, "Start Of Frame 0x%02x: width=%u, height=%u, components=%d") -JMESSAGE(JTRC_SOF_COMPONENT, " Component %d: %dhx%dv q=%d") -JMESSAGE(JTRC_SOI, "Start of Image") -JMESSAGE(JTRC_SOS, "Start Of Scan: %d components") -JMESSAGE(JTRC_SOS_COMPONENT, " Component %d: dc=%d ac=%d") -JMESSAGE(JTRC_SOS_PARAMS, " Ss=%d, Se=%d, Ah=%d, Al=%d") -JMESSAGE(JTRC_TFILE_CLOSE, "Closed temporary file %s") -JMESSAGE(JTRC_TFILE_OPEN, "Opened temporary file %s") -JMESSAGE(JTRC_THUMB_JPEG, - "JFIF extension marker: JPEG-compressed thumbnail image, length %u") -JMESSAGE(JTRC_THUMB_PALETTE, - "JFIF extension marker: palette thumbnail image, length %u") -JMESSAGE(JTRC_THUMB_RGB, - "JFIF extension marker: RGB thumbnail image, length %u") -JMESSAGE(JTRC_UNKNOWN_IDS, - "Unrecognized component IDs %d %d %d, assuming YCbCr") -JMESSAGE(JTRC_XMS_CLOSE, "Freed XMS handle %u") -JMESSAGE(JTRC_XMS_OPEN, "Obtained XMS handle %u") -JMESSAGE(JWRN_ADOBE_XFORM, "Unknown Adobe color transform code %d") -JMESSAGE(JWRN_BOGUS_PROGRESSION, - "Inconsistent progression sequence for component %d coefficient %d") -JMESSAGE(JWRN_EXTRANEOUS_DATA, - "Corrupt JPEG data: %u extraneous bytes before marker 0x%02x") -JMESSAGE(JWRN_HIT_MARKER, "Corrupt JPEG data: premature end of data segment") -JMESSAGE(JWRN_HUFF_BAD_CODE, "Corrupt JPEG data: bad Huffman code") -JMESSAGE(JWRN_JFIF_MAJOR, "Warning: unknown JFIF revision number %d.%02d") -JMESSAGE(JWRN_JPEG_EOF, "Premature end of JPEG file") -JMESSAGE(JWRN_MUST_RESYNC, - "Corrupt JPEG data: found marker 0x%02x instead of RST%d") -JMESSAGE(JWRN_NOT_SEQUENTIAL, "Invalid SOS parameters for sequential JPEG") -JMESSAGE(JWRN_TOO_MUCH_DATA, "Application transferred too many scanlines") - -#ifdef JMAKE_ENUM_LIST - - JMSG_LASTMSGCODE -} J_MESSAGE_CODE; - -#undef JMAKE_ENUM_LIST -#endif /* JMAKE_ENUM_LIST */ - -/* Zap JMESSAGE macro so that future re-inclusions do nothing by default */ -#undef JMESSAGE - - -#ifndef JERROR_H -#define JERROR_H - -/* Macros to simplify using the error and trace message stuff */ -/* The first parameter is either type of cinfo pointer */ - -/* Fatal errors (print message and exit) */ -#define ERREXIT(cinfo,code) \ - ((cinfo)->err->msg_code = (code), \ - (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) -#define ERREXIT1(cinfo,code,p1) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) -#define ERREXIT2(cinfo,code,p1,p2) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (cinfo)->err->msg_parm.i[1] = (p2), \ - (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) -#define ERREXIT3(cinfo,code,p1,p2,p3) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (cinfo)->err->msg_parm.i[1] = (p2), \ - (cinfo)->err->msg_parm.i[2] = (p3), \ - (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) -#define ERREXIT4(cinfo,code,p1,p2,p3,p4) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (cinfo)->err->msg_parm.i[1] = (p2), \ - (cinfo)->err->msg_parm.i[2] = (p3), \ - (cinfo)->err->msg_parm.i[3] = (p4), \ - (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) -#define ERREXITS(cinfo,code,str) \ - ((cinfo)->err->msg_code = (code), \ - strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \ - (*(cinfo)->err->error_exit) ((j_common_ptr) (cinfo))) - -#define MAKESTMT(stuff) do { stuff } while (0) - -/* Nonfatal errors (we can keep going, but the data is probably corrupt) */ -#define WARNMS(cinfo,code) \ - ((cinfo)->err->msg_code = (code), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) -#define WARNMS1(cinfo,code,p1) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) -#define WARNMS2(cinfo,code,p1,p2) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (cinfo)->err->msg_parm.i[1] = (p2), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), -1)) - -/* Informational/debugging messages */ -#define TRACEMS(cinfo,lvl,code) \ - ((cinfo)->err->msg_code = (code), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) -#define TRACEMS1(cinfo,lvl,code,p1) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) -#define TRACEMS2(cinfo,lvl,code,p1,p2) \ - ((cinfo)->err->msg_code = (code), \ - (cinfo)->err->msg_parm.i[0] = (p1), \ - (cinfo)->err->msg_parm.i[1] = (p2), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) -#define TRACEMS3(cinfo,lvl,code,p1,p2,p3) \ - MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ - _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); \ - (cinfo)->err->msg_code = (code); \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) -#define TRACEMS4(cinfo,lvl,code,p1,p2,p3,p4) \ - MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ - _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ - (cinfo)->err->msg_code = (code); \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) -#define TRACEMS5(cinfo,lvl,code,p1,p2,p3,p4,p5) \ - MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ - _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ - _mp[4] = (p5); \ - (cinfo)->err->msg_code = (code); \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) -#define TRACEMS8(cinfo,lvl,code,p1,p2,p3,p4,p5,p6,p7,p8) \ - MAKESTMT(int * _mp = (cinfo)->err->msg_parm.i; \ - _mp[0] = (p1); _mp[1] = (p2); _mp[2] = (p3); _mp[3] = (p4); \ - _mp[4] = (p5); _mp[5] = (p6); _mp[6] = (p7); _mp[7] = (p8); \ - (cinfo)->err->msg_code = (code); \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl)); ) -#define TRACEMSS(cinfo,lvl,code,str) \ - ((cinfo)->err->msg_code = (code), \ - strncpy((cinfo)->err->msg_parm.s, (str), JMSG_STR_PARM_MAX), \ - (*(cinfo)->err->emit_message) ((j_common_ptr) (cinfo), (lvl))) - -#endif /* JERROR_H */ diff --git a/project/jni/jpeg/include/jmorecfg.h b/project/jni/jpeg/include/jmorecfg.h deleted file mode 100644 index 236bbcbc9..000000000 --- a/project/jni/jpeg/include/jmorecfg.h +++ /dev/null @@ -1,387 +0,0 @@ -/* - * jmorecfg.h - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains additional configuration options that customize the - * JPEG software for special applications or support machine-dependent - * optimizations. Most users will not need to touch this file. - */ - -/* - * Define ANDROID_RGB to enable specific optimizations for Android - * JCS_RGBA_8888 support - * JCS_RGB_565 support - * - */ - -#define ANDROID_RGB - -#ifdef ANDROID_RGB -#define PACK_SHORT_565(r,g,b) ((((r)<<8)&0xf800)|(((g)<<3)&0x7E0)|((b)>>3)) -#define PACK_TWO_PIXELS(l,r) ((r<<16) | l) -#define PACK_NEED_ALIGNMENT(ptr) (((int)(ptr))&3) -#define WRITE_TWO_PIXELS(addr, pixels) do { \ - ((INT16*)(addr))[0] = (pixels); \ - ((INT16*)(addr))[1] = (pixels)>>16; \ - } while(0) -#define WRITE_TWO_ALIGNED_PIXELS(addr, pixels) ((*(INT32*)(addr)) = pixels) -#define DITHER_565_R(r, dither) ((r) + ((dither)&0xFF)) -#define DITHER_565_G(g, dither) ((g) + (((dither)&0xFF)>>1)) -#define DITHER_565_B(b, dither) ((b) + ((dither)&0xFF)) -#endif - -/* - * Define BITS_IN_JSAMPLE as either - * 8 for 8-bit sample values (the usual setting) - * 12 for 12-bit sample values - * Only 8 and 12 are legal data precisions for lossy JPEG according to the - * JPEG standard, and the IJG code does not support anything else! - * We do not support run-time selection of data precision, sorry. - */ - -#define BITS_IN_JSAMPLE 8 /* use 8 or 12 */ - - -/* - * Maximum number of components (color channels) allowed in JPEG image. - * To meet the letter of the JPEG spec, set this to 255. However, darn - * few applications need more than 4 channels (maybe 5 for CMYK + alpha - * mask). We recommend 10 as a reasonable compromise; use 4 if you are - * really short on memory. (Each allowed component costs a hundred or so - * bytes of storage, whether actually used in an image or not.) - */ - -#define MAX_COMPONENTS 10 /* maximum number of image components */ - - -/* - * Basic data types. - * You may need to change these if you have a machine with unusual data - * type sizes; for example, "char" not 8 bits, "short" not 16 bits, - * or "long" not 32 bits. We don't care whether "int" is 16 or 32 bits, - * but it had better be at least 16. - */ - -/* Representation of a single sample (pixel element value). - * We frequently allocate large arrays of these, so it's important to keep - * them small. But if you have memory to burn and access to char or short - * arrays is very slow on your hardware, you might want to change these. - */ - -#if BITS_IN_JSAMPLE == 8 -/* JSAMPLE should be the smallest type that will hold the values 0..255. - * You can use a signed char by having GETJSAMPLE mask it with 0xFF. - */ - -#ifdef HAVE_UNSIGNED_CHAR - -typedef unsigned char JSAMPLE; -#define GETJSAMPLE(value) ((int) (value)) - -#else /* not HAVE_UNSIGNED_CHAR */ - -typedef char JSAMPLE; -#ifdef CHAR_IS_UNSIGNED -#define GETJSAMPLE(value) ((int) (value)) -#else -#define GETJSAMPLE(value) ((int) (value) & 0xFF) -#endif /* CHAR_IS_UNSIGNED */ - -#endif /* HAVE_UNSIGNED_CHAR */ - -#define MAXJSAMPLE 255 -#define CENTERJSAMPLE 128 - -#endif /* BITS_IN_JSAMPLE == 8 */ - - -#if BITS_IN_JSAMPLE == 12 -/* JSAMPLE should be the smallest type that will hold the values 0..4095. - * On nearly all machines "short" will do nicely. - */ - -typedef short JSAMPLE; -#define GETJSAMPLE(value) ((int) (value)) - -#define MAXJSAMPLE 4095 -#define CENTERJSAMPLE 2048 - -#endif /* BITS_IN_JSAMPLE == 12 */ - - -/* Representation of a DCT frequency coefficient. - * This should be a signed value of at least 16 bits; "short" is usually OK. - * Again, we allocate large arrays of these, but you can change to int - * if you have memory to burn and "short" is really slow. - */ - -typedef short JCOEF; - - -/* Compressed datastreams are represented as arrays of JOCTET. - * These must be EXACTLY 8 bits wide, at least once they are written to - * external storage. Note that when using the stdio data source/destination - * managers, this is also the data type passed to fread/fwrite. - */ - -#ifdef HAVE_UNSIGNED_CHAR - -typedef unsigned char JOCTET; -#define GETJOCTET(value) (value) - -#else /* not HAVE_UNSIGNED_CHAR */ - -typedef char JOCTET; -#ifdef CHAR_IS_UNSIGNED -#define GETJOCTET(value) (value) -#else -#define GETJOCTET(value) ((value) & 0xFF) -#endif /* CHAR_IS_UNSIGNED */ - -#endif /* HAVE_UNSIGNED_CHAR */ - - -/* These typedefs are used for various table entries and so forth. - * They must be at least as wide as specified; but making them too big - * won't cost a huge amount of memory, so we don't provide special - * extraction code like we did for JSAMPLE. (In other words, these - * typedefs live at a different point on the speed/space tradeoff curve.) - */ - -/* UINT8 must hold at least the values 0..255. */ - -#ifdef HAVE_UNSIGNED_CHAR -typedef unsigned char UINT8; -#else /* not HAVE_UNSIGNED_CHAR */ -#ifdef CHAR_IS_UNSIGNED -typedef char UINT8; -#else /* not CHAR_IS_UNSIGNED */ -typedef short UINT8; -#endif /* CHAR_IS_UNSIGNED */ -#endif /* HAVE_UNSIGNED_CHAR */ - -/* UINT16 must hold at least the values 0..65535. */ - -#ifdef HAVE_UNSIGNED_SHORT -typedef unsigned short UINT16; -#else /* not HAVE_UNSIGNED_SHORT */ -typedef unsigned int UINT16; -#endif /* HAVE_UNSIGNED_SHORT */ - -/* INT16 must hold at least the values -32768..32767. */ - -#ifndef XMD_H /* X11/xmd.h correctly defines INT16 */ -typedef short INT16; -#endif - -/* INT32 must hold at least signed 32-bit values. */ - -#ifndef XMD_H /* X11/xmd.h correctly defines INT32 */ -typedef long INT32; -#endif - -/* Datatype used for image dimensions. The JPEG standard only supports - * images up to 64K*64K due to 16-bit fields in SOF markers. Therefore - * "unsigned int" is sufficient on all machines. However, if you need to - * handle larger images and you don't mind deviating from the spec, you - * can change this datatype. - */ - -typedef unsigned int JDIMENSION; - -#define JPEG_MAX_DIMENSION 65500L /* a tad under 64K to prevent overflows */ - - -/* These macros are used in all function definitions and extern declarations. - * You could modify them if you need to change function linkage conventions; - * in particular, you'll need to do that to make the library a Windows DLL. - * Another application is to make all functions global for use with debuggers - * or code profilers that require it. - */ - -/* a function called through method pointers: */ -#define METHODDEF(type) static type -/* a function used only in its module: */ -#define LOCAL(type) static type -/* a function referenced thru EXTERNs: */ -#define GLOBAL(type) type -/* a reference to a GLOBAL function: */ -#define EXTERN(type) extern type - - -/* This macro is used to declare a "method", that is, a function pointer. - * We want to supply prototype parameters if the compiler can cope. - * Note that the arglist parameter must be parenthesized! - * Again, you can customize this if you need special linkage keywords. - */ - -#ifdef HAVE_PROTOTYPES -#define JMETHOD(type,methodname,arglist) type (*methodname) arglist -#else -#define JMETHOD(type,methodname,arglist) type (*methodname) () -#endif - - -/* Here is the pseudo-keyword for declaring pointers that must be "far" - * on 80x86 machines. Most of the specialized coding for 80x86 is handled - * by just saying "FAR *" where such a pointer is needed. In a few places - * explicit coding is needed; see uses of the NEED_FAR_POINTERS symbol. - */ - -#ifdef NEED_FAR_POINTERS -#define FAR far -#else -#define FAR -#endif - - -/* - * On a few systems, type boolean and/or its values FALSE, TRUE may appear - * in standard header files. Or you may have conflicts with application- - * specific header files that you want to include together with these files. - * Defining HAVE_BOOLEAN before including jpeglib.h should make it work. - */ - -#ifndef HAVE_BOOLEAN -typedef int boolean; -#endif -#ifndef FALSE /* in case these macros already exist */ -#define FALSE 0 /* values of boolean */ -#endif -#ifndef TRUE -#define TRUE 1 -#endif - - -/* - * The remaining options affect code selection within the JPEG library, - * but they don't need to be visible to most applications using the library. - * To minimize application namespace pollution, the symbols won't be - * defined unless JPEG_INTERNALS or JPEG_INTERNAL_OPTIONS has been defined. - */ - -#ifdef JPEG_INTERNALS -#define JPEG_INTERNAL_OPTIONS -#endif - -#ifdef JPEG_INTERNAL_OPTIONS - - -/* - * These defines indicate whether to include various optional functions. - * Undefining some of these symbols will produce a smaller but less capable - * library. Note that you can leave certain source files out of the - * compilation/linking process if you've #undef'd the corresponding symbols. - * (You may HAVE to do that if your compiler doesn't like null source files.) - */ - -/* Arithmetic coding is unsupported for legal reasons. Complaints to IBM. */ - -/* Capability options common to encoder and decoder: */ - -#define DCT_ISLOW_SUPPORTED /* slow but accurate integer algorithm */ -#define DCT_IFAST_SUPPORTED /* faster, less accurate integer method */ -#define DCT_FLOAT_SUPPORTED /* floating-point: accurate, fast on fast HW */ - -/* Encoder capability options: */ - -#undef C_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */ -#define C_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ -#define C_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ -#define ENTROPY_OPT_SUPPORTED /* Optimization of entropy coding parms? */ -/* Note: if you selected 12-bit data precision, it is dangerous to turn off - * ENTROPY_OPT_SUPPORTED. The standard Huffman tables are only good for 8-bit - * precision, so jchuff.c normally uses entropy optimization to compute - * usable tables for higher precision. If you don't want to do optimization, - * you'll have to supply different default Huffman tables. - * The exact same statements apply for progressive JPEG: the default tables - * don't work for progressive mode. (This may get fixed, however.) - */ -#define INPUT_SMOOTHING_SUPPORTED /* Input image smoothing option? */ - -/* Decoder capability options: */ - -#undef D_ARITH_CODING_SUPPORTED /* Arithmetic coding back end? */ -#define D_MULTISCAN_FILES_SUPPORTED /* Multiple-scan JPEG files? */ -#define D_PROGRESSIVE_SUPPORTED /* Progressive JPEG? (Requires MULTISCAN)*/ -#define SAVE_MARKERS_SUPPORTED /* jpeg_save_markers() needed? */ -#define BLOCK_SMOOTHING_SUPPORTED /* Block smoothing? (Progressive only) */ -#define IDCT_SCALING_SUPPORTED /* Output rescaling via IDCT? */ -#undef UPSAMPLE_SCALING_SUPPORTED /* Output rescaling at upsample stage? */ -#define UPSAMPLE_MERGING_SUPPORTED /* Fast path for sloppy upsampling? */ -#define QUANT_1PASS_SUPPORTED /* 1-pass color quantization? */ -#define QUANT_2PASS_SUPPORTED /* 2-pass color quantization? */ - -/* more capability options later, no doubt */ - - -/* - * Ordering of RGB data in scanlines passed to or from the application. - * If your application wants to deal with data in the order B,G,R, just - * change these macros. You can also deal with formats such as R,G,B,X - * (one extra byte per pixel) by changing RGB_PIXELSIZE. Note that changing - * the offsets will also change the order in which colormap data is organized. - * RESTRICTIONS: - * 1. The sample applications cjpeg,djpeg do NOT support modified RGB formats. - * 2. These macros only affect RGB<=>YCbCr color conversion, so they are not - * useful if you are using JPEG color spaces other than YCbCr or grayscale. - * 3. The color quantizer modules will not behave desirably if RGB_PIXELSIZE - * is not 3 (they don't understand about dummy color components!). So you - * can't use color quantization if you change that value. - */ - -#define RGB_RED 0 /* Offset of Red in an RGB scanline element */ -#define RGB_GREEN 1 /* Offset of Green */ -#define RGB_BLUE 2 /* Offset of Blue */ -#ifdef ANDROID_RGB -#define RGB_ALPHA 3 /* Offset of Alpha */ -#endif -#define RGB_PIXELSIZE 3 /* JSAMPLEs per RGB scanline element */ - -/* Definitions for speed-related optimizations. */ - - -/* If your compiler supports inline functions, define INLINE - * as the inline keyword; otherwise define it as empty. - */ - -#ifndef INLINE -#ifdef __GNUC__ /* for instance, GNU C knows about inline */ -#define INLINE __inline__ -#endif -#ifndef INLINE -#define INLINE /* default is to define it as empty */ -#endif -#endif - - -/* On some machines (notably 68000 series) "int" is 32 bits, but multiplying - * two 16-bit shorts is faster than multiplying two ints. Define MULTIPLIER - * as short on such a machine. MULTIPLIER must be at least 16 bits wide. - */ - -#ifndef MULTIPLIER -#define MULTIPLIER int /* type for fastest integer multiply */ -#endif - - -/* FAST_FLOAT should be either float or double, whichever is done faster - * by your compiler. (Note that this type is only used in the floating point - * DCT routines, so it only matters if you've defined DCT_FLOAT_SUPPORTED.) - * Typically, float is faster in ANSI C compilers, while double is faster in - * pre-ANSI compilers (because they insist on converting to double anyway). - * The code below therefore chooses float if we have ANSI-style prototypes. - */ - -#ifndef FAST_FLOAT -#ifdef HAVE_PROTOTYPES -#define FAST_FLOAT float -#else -#define FAST_FLOAT double -#endif -#endif - -#endif /* JPEG_INTERNAL_OPTIONS */ diff --git a/project/jni/jpeg/include/jpegint.h b/project/jni/jpeg/include/jpegint.h deleted file mode 100644 index 95b00d405..000000000 --- a/project/jni/jpeg/include/jpegint.h +++ /dev/null @@ -1,392 +0,0 @@ -/* - * jpegint.h - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file provides common declarations for the various JPEG modules. - * These declarations are considered internal to the JPEG library; most - * applications using the library shouldn't need to include this file. - */ - - -/* Declarations for both compression & decompression */ - -typedef enum { /* Operating modes for buffer controllers */ - JBUF_PASS_THRU, /* Plain stripwise operation */ - /* Remaining modes require a full-image buffer to have been created */ - JBUF_SAVE_SOURCE, /* Run source subobject only, save output */ - JBUF_CRANK_DEST, /* Run dest subobject only, using saved data */ - JBUF_SAVE_AND_PASS /* Run both subobjects, save output */ -} J_BUF_MODE; - -/* Values of global_state field (jdapi.c has some dependencies on ordering!) */ -#define CSTATE_START 100 /* after create_compress */ -#define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */ -#define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */ -#define CSTATE_WRCOEFS 103 /* jpeg_write_coefficients done */ -#define DSTATE_START 200 /* after create_decompress */ -#define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */ -#define DSTATE_READY 202 /* found SOS, ready for start_decompress */ -#define DSTATE_PRELOAD 203 /* reading multiscan file in start_decompress*/ -#define DSTATE_PRESCAN 204 /* performing dummy pass for 2-pass quant */ -#define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */ -#define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */ -#define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */ -#define DSTATE_BUFPOST 208 /* looking for SOS/EOI in jpeg_finish_output */ -#define DSTATE_RDCOEFS 209 /* reading file in jpeg_read_coefficients */ -#define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */ - - -/* Declarations for compression modules */ - -/* Master control module */ -struct jpeg_comp_master { - JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo)); - JMETHOD(void, pass_startup, (j_compress_ptr cinfo)); - JMETHOD(void, finish_pass, (j_compress_ptr cinfo)); - - /* State variables made visible to other modules */ - boolean call_pass_startup; /* True if pass_startup must be called */ - boolean is_last_pass; /* True during last pass */ -}; - -/* Main buffer control (downsampled-data buffer) */ -struct jpeg_c_main_controller { - JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode)); - JMETHOD(void, process_data, (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail)); -}; - -/* Compression preprocessing (downsampling input buffer control) */ -struct jpeg_c_prep_controller { - JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode)); - JMETHOD(void, pre_process_data, (j_compress_ptr cinfo, - JSAMPARRAY input_buf, - JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail, - JSAMPIMAGE output_buf, - JDIMENSION *out_row_group_ctr, - JDIMENSION out_row_groups_avail)); -}; - -/* Coefficient buffer control */ -struct jpeg_c_coef_controller { - JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode)); - JMETHOD(boolean, compress_data, (j_compress_ptr cinfo, - JSAMPIMAGE input_buf)); -}; - -/* Colorspace conversion */ -struct jpeg_color_converter { - JMETHOD(void, start_pass, (j_compress_ptr cinfo)); - JMETHOD(void, color_convert, (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPIMAGE output_buf, - JDIMENSION output_row, int num_rows)); -}; - -/* Downsampling */ -struct jpeg_downsampler { - JMETHOD(void, start_pass, (j_compress_ptr cinfo)); - JMETHOD(void, downsample, (j_compress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_index, - JSAMPIMAGE output_buf, - JDIMENSION out_row_group_index)); - - boolean need_context_rows; /* TRUE if need rows above & below */ -}; - -/* Forward DCT (also controls coefficient quantization) */ -struct jpeg_forward_dct { - JMETHOD(void, start_pass, (j_compress_ptr cinfo)); - /* perhaps this should be an array??? */ - JMETHOD(void, forward_DCT, (j_compress_ptr cinfo, - jpeg_component_info * compptr, - JSAMPARRAY sample_data, JBLOCKROW coef_blocks, - JDIMENSION start_row, JDIMENSION start_col, - JDIMENSION num_blocks)); -}; - -/* Entropy encoding */ -struct jpeg_entropy_encoder { - JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics)); - JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKROW *MCU_data)); - JMETHOD(void, finish_pass, (j_compress_ptr cinfo)); -}; - -/* Marker writing */ -struct jpeg_marker_writer { - JMETHOD(void, write_file_header, (j_compress_ptr cinfo)); - JMETHOD(void, write_frame_header, (j_compress_ptr cinfo)); - JMETHOD(void, write_scan_header, (j_compress_ptr cinfo)); - JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo)); - JMETHOD(void, write_tables_only, (j_compress_ptr cinfo)); - /* These routines are exported to allow insertion of extra markers */ - /* Probably only COM and APPn markers should be written this way */ - JMETHOD(void, write_marker_header, (j_compress_ptr cinfo, int marker, - unsigned int datalen)); - JMETHOD(void, write_marker_byte, (j_compress_ptr cinfo, int val)); -}; - - -/* Declarations for decompression modules */ - -/* Master control module */ -struct jpeg_decomp_master { - JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo)); - JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo)); - - /* State variables made visible to other modules */ - boolean is_dummy_pass; /* True during 1st pass for 2-pass quant */ -}; - -/* Input control module */ -struct jpeg_input_controller { - JMETHOD(int, consume_input, (j_decompress_ptr cinfo)); - JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo)); - JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo)); - JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo)); - - /* State variables made visible to other modules */ - boolean has_multiple_scans; /* True if file has multiple scans */ - boolean eoi_reached; /* True when EOI has been consumed */ -}; - -/* Main buffer control (downsampled-data buffer) */ -struct jpeg_d_main_controller { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)); - JMETHOD(void, process_data, (j_decompress_ptr cinfo, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail)); -}; - -/* Coefficient buffer control */ -struct jpeg_d_coef_controller { - JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo)); - JMETHOD(int, consume_data, (j_decompress_ptr cinfo)); - JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo)); - JMETHOD(int, decompress_data, (j_decompress_ptr cinfo, - JSAMPIMAGE output_buf)); - /* Pointer to array of coefficient virtual arrays, or NULL if none */ - jvirt_barray_ptr *coef_arrays; -}; - -/* Decompression postprocessing (color quantization buffer control) */ -struct jpeg_d_post_controller { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)); - JMETHOD(void, post_process_data, (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, - JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, - JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail)); -}; - -/* Marker reading & parsing */ -struct jpeg_marker_reader { - JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo)); - /* Read markers until SOS or EOI. - * Returns same codes as are defined for jpeg_consume_input: - * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. - */ - JMETHOD(int, read_markers, (j_decompress_ptr cinfo)); - /* Read a restart marker --- exported for use by entropy decoder only */ - jpeg_marker_parser_method read_restart_marker; - - /* State of marker reader --- nominally internal, but applications - * supplying COM or APPn handlers might like to know the state. - */ - boolean saw_SOI; /* found SOI? */ - boolean saw_SOF; /* found SOF? */ - int next_restart_num; /* next restart number expected (0-7) */ - unsigned int discarded_bytes; /* # of bytes skipped looking for a marker */ -}; - -/* Entropy decoding */ -struct jpeg_entropy_decoder { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); - JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo, - JBLOCKROW *MCU_data)); - - /* This is here to share code between baseline and progressive decoders; */ - /* other modules probably should not use it */ - boolean insufficient_data; /* set TRUE after emitting warning */ -}; - -/* Inverse DCT (also performs dequantization) */ -typedef JMETHOD(void, inverse_DCT_method_ptr, - (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col)); - -struct jpeg_inverse_dct { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); - /* It is useful to allow each component to have a separate IDCT method. */ - inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS]; -}; - -/* Upsampling (note that upsampler must also call color converter) */ -struct jpeg_upsampler { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); - JMETHOD(void, upsample, (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, - JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, - JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail)); - - boolean need_context_rows; /* TRUE if need rows above & below */ -}; - -/* Colorspace conversion */ -struct jpeg_color_deconverter { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); - JMETHOD(void, color_convert, (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows)); -}; - -/* Color quantization or color precision reduction */ -struct jpeg_color_quantizer { - JMETHOD(void, start_pass, (j_decompress_ptr cinfo, boolean is_pre_scan)); - JMETHOD(void, color_quantize, (j_decompress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPARRAY output_buf, - int num_rows)); - JMETHOD(void, finish_pass, (j_decompress_ptr cinfo)); - JMETHOD(void, new_color_map, (j_decompress_ptr cinfo)); -}; - - -/* Miscellaneous useful macros */ - -#undef MAX -#define MAX(a,b) ((a) > (b) ? (a) : (b)) -#undef MIN -#define MIN(a,b) ((a) < (b) ? (a) : (b)) - - -/* We assume that right shift corresponds to signed division by 2 with - * rounding towards minus infinity. This is correct for typical "arithmetic - * shift" instructions that shift in copies of the sign bit. But some - * C compilers implement >> with an unsigned shift. For these machines you - * must define RIGHT_SHIFT_IS_UNSIGNED. - * RIGHT_SHIFT provides a proper signed right shift of an INT32 quantity. - * It is only applied with constant shift counts. SHIFT_TEMPS must be - * included in the variables of any routine using RIGHT_SHIFT. - */ - -#ifdef RIGHT_SHIFT_IS_UNSIGNED -#define SHIFT_TEMPS INT32 shift_temp; -#define RIGHT_SHIFT(x,shft) \ - ((shift_temp = (x)) < 0 ? \ - (shift_temp >> (shft)) | ((~((INT32) 0)) << (32-(shft))) : \ - (shift_temp >> (shft))) -#else -#define SHIFT_TEMPS -#define RIGHT_SHIFT(x,shft) ((x) >> (shft)) -#endif - - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jinit_compress_master jICompress -#define jinit_c_master_control jICMaster -#define jinit_c_main_controller jICMainC -#define jinit_c_prep_controller jICPrepC -#define jinit_c_coef_controller jICCoefC -#define jinit_color_converter jICColor -#define jinit_downsampler jIDownsampler -#define jinit_forward_dct jIFDCT -#define jinit_huff_encoder jIHEncoder -#define jinit_phuff_encoder jIPHEncoder -#define jinit_marker_writer jIMWriter -#define jinit_master_decompress jIDMaster -#define jinit_d_main_controller jIDMainC -#define jinit_d_coef_controller jIDCoefC -#define jinit_d_post_controller jIDPostC -#define jinit_input_controller jIInCtlr -#define jinit_marker_reader jIMReader -#define jinit_huff_decoder jIHDecoder -#define jinit_phuff_decoder jIPHDecoder -#define jinit_inverse_dct jIIDCT -#define jinit_upsampler jIUpsampler -#define jinit_color_deconverter jIDColor -#define jinit_1pass_quantizer jI1Quant -#define jinit_2pass_quantizer jI2Quant -#define jinit_merged_upsampler jIMUpsampler -#define jinit_memory_mgr jIMemMgr -#define jdiv_round_up jDivRound -#define jround_up jRound -#define jcopy_sample_rows jCopySamples -#define jcopy_block_row jCopyBlocks -#define jzero_far jZeroFar -#define jpeg_zigzag_order jZIGTable -#define jpeg_natural_order jZAGTable -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - - -/* Compression module initialization routines */ -EXTERN(void) jinit_compress_master JPP((j_compress_ptr cinfo)); -EXTERN(void) jinit_c_master_control JPP((j_compress_ptr cinfo, - boolean transcode_only)); -EXTERN(void) jinit_c_main_controller JPP((j_compress_ptr cinfo, - boolean need_full_buffer)); -EXTERN(void) jinit_c_prep_controller JPP((j_compress_ptr cinfo, - boolean need_full_buffer)); -EXTERN(void) jinit_c_coef_controller JPP((j_compress_ptr cinfo, - boolean need_full_buffer)); -EXTERN(void) jinit_color_converter JPP((j_compress_ptr cinfo)); -EXTERN(void) jinit_downsampler JPP((j_compress_ptr cinfo)); -EXTERN(void) jinit_forward_dct JPP((j_compress_ptr cinfo)); -EXTERN(void) jinit_huff_encoder JPP((j_compress_ptr cinfo)); -EXTERN(void) jinit_phuff_encoder JPP((j_compress_ptr cinfo)); -EXTERN(void) jinit_marker_writer JPP((j_compress_ptr cinfo)); -/* Decompression module initialization routines */ -EXTERN(void) jinit_master_decompress JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_d_main_controller JPP((j_decompress_ptr cinfo, - boolean need_full_buffer)); -EXTERN(void) jinit_d_coef_controller JPP((j_decompress_ptr cinfo, - boolean need_full_buffer)); -EXTERN(void) jinit_d_post_controller JPP((j_decompress_ptr cinfo, - boolean need_full_buffer)); -EXTERN(void) jinit_input_controller JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_marker_reader JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_huff_decoder JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_phuff_decoder JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_inverse_dct JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_upsampler JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_color_deconverter JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_1pass_quantizer JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_2pass_quantizer JPP((j_decompress_ptr cinfo)); -EXTERN(void) jinit_merged_upsampler JPP((j_decompress_ptr cinfo)); -/* Memory manager initialization */ -EXTERN(void) jinit_memory_mgr JPP((j_common_ptr cinfo)); - -/* Utility routines in jutils.c */ -EXTERN(long) jdiv_round_up JPP((long a, long b)); -EXTERN(long) jround_up JPP((long a, long b)); -EXTERN(void) jcopy_sample_rows JPP((JSAMPARRAY input_array, int source_row, - JSAMPARRAY output_array, int dest_row, - int num_rows, JDIMENSION num_cols)); -EXTERN(void) jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row, - JDIMENSION num_blocks)); -EXTERN(void) jzero_far JPP((void FAR * target, size_t bytestozero)); -/* Constant tables in jutils.c */ -#if 0 /* This table is not actually needed in v6a */ -extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */ -#endif -extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */ - -/* Suppress undefined-structure complaints if necessary. */ - -#ifdef INCOMPLETE_TYPES_BROKEN -#ifndef AM_MEMORY_MANAGER /* only jmemmgr.c defines these */ -struct jvirt_sarray_control { long dummy; }; -struct jvirt_barray_control { long dummy; }; -#endif -#endif /* INCOMPLETE_TYPES_BROKEN */ diff --git a/project/jni/jpeg/include/jpeglib.h b/project/jni/jpeg/include/jpeglib.h deleted file mode 100644 index 96cc5451b..000000000 --- a/project/jni/jpeg/include/jpeglib.h +++ /dev/null @@ -1,1108 +0,0 @@ -/* - * jpeglib.h - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file defines the application interface for the JPEG library. - * Most applications using the library need only include this file, - * and perhaps jerror.h if they want to know the exact error codes. - */ - -#ifndef JPEGLIB_H -#define JPEGLIB_H - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * First we include the configuration files that record how this - * installation of the JPEG library is set up. jconfig.h can be - * generated automatically for many systems. jmorecfg.h contains - * manual configuration options that most people need not worry about. - */ - -#ifndef JCONFIG_INCLUDED /* in case jinclude.h already did */ -#include "jconfig.h" /* widely used configuration options */ -#endif -#include "jmorecfg.h" /* seldom changed options */ - - -/* Version ID for the JPEG library. - * Might be useful for tests like "#if JPEG_LIB_VERSION >= 60". - */ - -#define JPEG_LIB_VERSION 62 /* Version 6b */ - - -/* Various constants determining the sizes of things. - * All of these are specified by the JPEG standard, so don't change them - * if you want to be compatible. - */ - -#define DCTSIZE 8 /* The basic DCT block is 8x8 samples */ -#define DCTSIZE2 64 /* DCTSIZE squared; # of elements in a block */ -#define NUM_QUANT_TBLS 4 /* Quantization tables are numbered 0..3 */ -#define NUM_HUFF_TBLS 4 /* Huffman tables are numbered 0..3 */ -#define NUM_ARITH_TBLS 16 /* Arith-coding tables are numbered 0..15 */ -#define MAX_COMPS_IN_SCAN 4 /* JPEG limit on # of components in one scan */ -#define MAX_SAMP_FACTOR 4 /* JPEG limit on sampling factors */ -/* Unfortunately, some bozo at Adobe saw no reason to be bound by the standard; - * the PostScript DCT filter can emit files with many more than 10 blocks/MCU. - * If you happen to run across such a file, you can up D_MAX_BLOCKS_IN_MCU - * to handle it. We even let you do this from the jconfig.h file. However, - * we strongly discourage changing C_MAX_BLOCKS_IN_MCU; just because Adobe - * sometimes emits noncompliant files doesn't mean you should too. - */ -#define C_MAX_BLOCKS_IN_MCU 10 /* compressor's limit on blocks per MCU */ -#ifndef D_MAX_BLOCKS_IN_MCU -#define D_MAX_BLOCKS_IN_MCU 10 /* decompressor's limit on blocks per MCU */ -#endif - - -/* Data structures for images (arrays of samples and of DCT coefficients). - * On 80x86 machines, the image arrays are too big for near pointers, - * but the pointer arrays can fit in near memory. - */ - -typedef JSAMPLE FAR *JSAMPROW; /* ptr to one image row of pixel samples. */ -typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */ -typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */ - -typedef JCOEF JBLOCK[DCTSIZE2]; /* one block of coefficients */ -typedef JBLOCK FAR *JBLOCKROW; /* pointer to one row of coefficient blocks */ -typedef JBLOCKROW *JBLOCKARRAY; /* a 2-D array of coefficient blocks */ -typedef JBLOCKARRAY *JBLOCKIMAGE; /* a 3-D array of coefficient blocks */ - -typedef JCOEF FAR *JCOEFPTR; /* useful in a couple of places */ - - -/* Types for JPEG compression parameters and working tables. */ - - -/* DCT coefficient quantization tables. */ - -typedef struct { - /* This array gives the coefficient quantizers in natural array order - * (not the zigzag order in which they are stored in a JPEG DQT marker). - * CAUTION: IJG versions prior to v6a kept this array in zigzag order. - */ - UINT16 quantval[DCTSIZE2]; /* quantization step for each coefficient */ - /* This field is used only during compression. It's initialized FALSE when - * the table is created, and set TRUE when it's been output to the file. - * You could suppress output of a table by setting this to TRUE. - * (See jpeg_suppress_tables for an example.) - */ - boolean sent_table; /* TRUE when table has been output */ -} JQUANT_TBL; - - -/* Huffman coding tables. */ - -typedef struct { - /* These two fields directly represent the contents of a JPEG DHT marker */ - UINT8 bits[17]; /* bits[k] = # of symbols with codes of */ - /* length k bits; bits[0] is unused */ - UINT8 huffval[256]; /* The symbols, in order of incr code length */ - /* This field is used only during compression. It's initialized FALSE when - * the table is created, and set TRUE when it's been output to the file. - * You could suppress output of a table by setting this to TRUE. - * (See jpeg_suppress_tables for an example.) - */ - boolean sent_table; /* TRUE when table has been output */ -} JHUFF_TBL; - - -/* Basic info about one component (color channel). */ - -typedef struct { - /* These values are fixed over the whole image. */ - /* For compression, they must be supplied by parameter setup; */ - /* for decompression, they are read from the SOF marker. */ - int component_id; /* identifier for this component (0..255) */ - int component_index; /* its index in SOF or cinfo->comp_info[] */ - int h_samp_factor; /* horizontal sampling factor (1..4) */ - int v_samp_factor; /* vertical sampling factor (1..4) */ - int quant_tbl_no; /* quantization table selector (0..3) */ - /* These values may vary between scans. */ - /* For compression, they must be supplied by parameter setup; */ - /* for decompression, they are read from the SOS marker. */ - /* The decompressor output side may not use these variables. */ - int dc_tbl_no; /* DC entropy table selector (0..3) */ - int ac_tbl_no; /* AC entropy table selector (0..3) */ - - /* Remaining fields should be treated as private by applications. */ - - /* These values are computed during compression or decompression startup: */ - /* Component's size in DCT blocks. - * Any dummy blocks added to complete an MCU are not counted; therefore - * these values do not depend on whether a scan is interleaved or not. - */ - JDIMENSION width_in_blocks; - JDIMENSION height_in_blocks; - /* Size of a DCT block in samples. Always DCTSIZE for compression. - * For decompression this is the size of the output from one DCT block, - * reflecting any scaling we choose to apply during the IDCT step. - * Values of 1,2,4,8 are likely to be supported. Note that different - * components may receive different IDCT scalings. - */ - int DCT_scaled_size; - /* The downsampled dimensions are the component's actual, unpadded number - * of samples at the main buffer (preprocessing/compression interface), thus - * downsampled_width = ceil(image_width * Hi/Hmax) - * and similarly for height. For decompression, IDCT scaling is included, so - * downsampled_width = ceil(image_width * Hi/Hmax * DCT_scaled_size/DCTSIZE) - */ - JDIMENSION downsampled_width; /* actual width in samples */ - JDIMENSION downsampled_height; /* actual height in samples */ - /* This flag is used only for decompression. In cases where some of the - * components will be ignored (eg grayscale output from YCbCr image), - * we can skip most computations for the unused components. - */ - boolean component_needed; /* do we need the value of this component? */ - - /* These values are computed before starting a scan of the component. */ - /* The decompressor output side may not use these variables. */ - int MCU_width; /* number of blocks per MCU, horizontally */ - int MCU_height; /* number of blocks per MCU, vertically */ - int MCU_blocks; /* MCU_width * MCU_height */ - int MCU_sample_width; /* MCU width in samples, MCU_width*DCT_scaled_size */ - int last_col_width; /* # of non-dummy blocks across in last MCU */ - int last_row_height; /* # of non-dummy blocks down in last MCU */ - - /* Saved quantization table for component; NULL if none yet saved. - * See jdinput.c comments about the need for this information. - * This field is currently used only for decompression. - */ - JQUANT_TBL * quant_table; - - /* Private per-component storage for DCT or IDCT subsystem. */ - void * dct_table; -} jpeg_component_info; - - -/* The script for encoding a multiple-scan file is an array of these: */ - -typedef struct { - int comps_in_scan; /* number of components encoded in this scan */ - int component_index[MAX_COMPS_IN_SCAN]; /* their SOF/comp_info[] indexes */ - int Ss, Se; /* progressive JPEG spectral selection parms */ - int Ah, Al; /* progressive JPEG successive approx. parms */ -} jpeg_scan_info; - -/* The decompressor can save APPn and COM markers in a list of these: */ - -typedef struct jpeg_marker_struct FAR * jpeg_saved_marker_ptr; - -struct jpeg_marker_struct { - jpeg_saved_marker_ptr next; /* next in list, or NULL */ - UINT8 marker; /* marker code: JPEG_COM, or JPEG_APP0+n */ - unsigned int original_length; /* # bytes of data in the file */ - unsigned int data_length; /* # bytes of data saved at data[] */ - JOCTET FAR * data; /* the data contained in the marker */ - /* the marker length word is not counted in data_length or original_length */ -}; - -/* Known color spaces. */ - -typedef enum { - JCS_UNKNOWN, /* error/unspecified */ - JCS_GRAYSCALE, /* monochrome */ - JCS_RGB, /* red/green/blue */ - JCS_YCbCr, /* Y/Cb/Cr (also known as YUV) */ - JCS_CMYK, /* C/M/Y/K */ - JCS_YCCK, /* Y/Cb/Cr/K */ -#ifdef ANDROID_RGB - JCS_RGBA_8888, /* red/green/blue/alpha */ - JCS_RGB_565 /* red/green/blue in 565 format */ -#endif -} J_COLOR_SPACE; - -/* DCT/IDCT algorithm options. */ - -typedef enum { - JDCT_ISLOW, /* slow but accurate integer algorithm */ - JDCT_IFAST, /* faster, less accurate integer method */ - JDCT_FLOAT /* floating-point: accurate, fast on fast HW */ -} J_DCT_METHOD; - -#ifndef JDCT_DEFAULT /* may be overridden in jconfig.h */ -#define JDCT_DEFAULT JDCT_ISLOW -#endif -#ifndef JDCT_FASTEST /* may be overridden in jconfig.h */ -#define JDCT_FASTEST JDCT_IFAST -#endif - -/* Dithering options for decompression. */ - -typedef enum { - JDITHER_NONE, /* no dithering */ - JDITHER_ORDERED, /* simple ordered dither */ - JDITHER_FS /* Floyd-Steinberg error diffusion dither */ -} J_DITHER_MODE; - - -/* Common fields between JPEG compression and decompression master structs. */ - -#define jpeg_common_fields \ - struct jpeg_error_mgr * err; /* Error handler module */\ - struct jpeg_memory_mgr * mem; /* Memory manager module */\ - struct jpeg_progress_mgr * progress; /* Progress monitor, or NULL if none */\ - void * client_data; /* Available for use by application */\ - boolean is_decompressor; /* So common code can tell which is which */\ - int global_state /* For checking call sequence validity */ - -/* Routines that are to be used by both halves of the library are declared - * to receive a pointer to this structure. There are no actual instances of - * jpeg_common_struct, only of jpeg_compress_struct and jpeg_decompress_struct. - */ -struct jpeg_common_struct { - jpeg_common_fields; /* Fields common to both master struct types */ - /* Additional fields follow in an actual jpeg_compress_struct or - * jpeg_decompress_struct. All three structs must agree on these - * initial fields! (This would be a lot cleaner in C++.) - */ -}; - -typedef struct jpeg_common_struct * j_common_ptr; -typedef struct jpeg_compress_struct * j_compress_ptr; -typedef struct jpeg_decompress_struct * j_decompress_ptr; - - -/* Master record for a compression instance */ - -struct jpeg_compress_struct { - jpeg_common_fields; /* Fields shared with jpeg_decompress_struct */ - - /* Destination for compressed data */ - struct jpeg_destination_mgr * dest; - - /* Description of source image --- these fields must be filled in by - * outer application before starting compression. in_color_space must - * be correct before you can even call jpeg_set_defaults(). - */ - - JDIMENSION image_width; /* input image width */ - JDIMENSION image_height; /* input image height */ - int input_components; /* # of color components in input image */ - J_COLOR_SPACE in_color_space; /* colorspace of input image */ - - double input_gamma; /* image gamma of input image */ - - /* Compression parameters --- these fields must be set before calling - * jpeg_start_compress(). We recommend calling jpeg_set_defaults() to - * initialize everything to reasonable defaults, then changing anything - * the application specifically wants to change. That way you won't get - * burnt when new parameters are added. Also note that there are several - * helper routines to simplify changing parameters. - */ - - int data_precision; /* bits of precision in image data */ - - int num_components; /* # of color components in JPEG image */ - J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ - - jpeg_component_info * comp_info; - /* comp_info[i] describes component that appears i'th in SOF */ - - JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; - /* ptrs to coefficient quantization tables, or NULL if not defined */ - - JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; - JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; - /* ptrs to Huffman coding tables, or NULL if not defined */ - - UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ - UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ - UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ - - int num_scans; /* # of entries in scan_info array */ - const jpeg_scan_info * scan_info; /* script for multi-scan file, or NULL */ - /* The default value of scan_info is NULL, which causes a single-scan - * sequential JPEG file to be emitted. To create a multi-scan file, - * set num_scans and scan_info to point to an array of scan definitions. - */ - - boolean raw_data_in; /* TRUE=caller supplies downsampled data */ - boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ - boolean optimize_coding; /* TRUE=optimize entropy encoding parms */ - boolean CCIR601_sampling; /* TRUE=first samples are cosited */ - int smoothing_factor; /* 1..100, or 0 for no input smoothing */ - J_DCT_METHOD dct_method; /* DCT algorithm selector */ - - /* The restart interval can be specified in absolute MCUs by setting - * restart_interval, or in MCU rows by setting restart_in_rows - * (in which case the correct restart_interval will be figured - * for each scan). - */ - unsigned int restart_interval; /* MCUs per restart, or 0 for no restart */ - int restart_in_rows; /* if > 0, MCU rows per restart interval */ - - /* Parameters controlling emission of special markers. */ - - boolean write_JFIF_header; /* should a JFIF marker be written? */ - UINT8 JFIF_major_version; /* What to write for the JFIF version number */ - UINT8 JFIF_minor_version; - /* These three values are not used by the JPEG code, merely copied */ - /* into the JFIF APP0 marker. density_unit can be 0 for unknown, */ - /* 1 for dots/inch, or 2 for dots/cm. Note that the pixel aspect */ - /* ratio is defined by X_density/Y_density even when density_unit=0. */ - UINT8 density_unit; /* JFIF code for pixel size units */ - UINT16 X_density; /* Horizontal pixel density */ - UINT16 Y_density; /* Vertical pixel density */ - boolean write_Adobe_marker; /* should an Adobe marker be written? */ - - /* State variable: index of next scanline to be written to - * jpeg_write_scanlines(). Application may use this to control its - * processing loop, e.g., "while (next_scanline < image_height)". - */ - - JDIMENSION next_scanline; /* 0 .. image_height-1 */ - - /* Remaining fields are known throughout compressor, but generally - * should not be touched by a surrounding application. - */ - - /* - * These fields are computed during compression startup - */ - boolean progressive_mode; /* TRUE if scan script uses progressive mode */ - int max_h_samp_factor; /* largest h_samp_factor */ - int max_v_samp_factor; /* largest v_samp_factor */ - - JDIMENSION total_iMCU_rows; /* # of iMCU rows to be input to coef ctlr */ - /* The coefficient controller receives data in units of MCU rows as defined - * for fully interleaved scans (whether the JPEG file is interleaved or not). - * There are v_samp_factor * DCTSIZE sample rows of each component in an - * "iMCU" (interleaved MCU) row. - */ - - /* - * These fields are valid during any one scan. - * They describe the components and MCUs actually appearing in the scan. - */ - int comps_in_scan; /* # of JPEG components in this scan */ - jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; - /* *cur_comp_info[i] describes component that appears i'th in SOS */ - - JDIMENSION MCUs_per_row; /* # of MCUs across the image */ - JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ - - int blocks_in_MCU; /* # of DCT blocks per MCU */ - int MCU_membership[C_MAX_BLOCKS_IN_MCU]; - /* MCU_membership[i] is index in cur_comp_info of component owning */ - /* i'th block in an MCU */ - - int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ - - /* - * Links to compression subobjects (methods and private variables of modules) - */ - struct jpeg_comp_master * master; - struct jpeg_c_main_controller * main; - struct jpeg_c_prep_controller * prep; - struct jpeg_c_coef_controller * coef; - struct jpeg_marker_writer * marker; - struct jpeg_color_converter * cconvert; - struct jpeg_downsampler * downsample; - struct jpeg_forward_dct * fdct; - struct jpeg_entropy_encoder * entropy; - jpeg_scan_info * script_space; /* workspace for jpeg_simple_progression */ - int script_space_size; -}; - - -/* Master record for a decompression instance */ - -struct jpeg_decompress_struct { - jpeg_common_fields; /* Fields shared with jpeg_compress_struct */ - - /* Source of compressed data */ - struct jpeg_source_mgr * src; - - /* Basic description of image --- filled in by jpeg_read_header(). */ - /* Application may inspect these values to decide how to process image. */ - - JDIMENSION image_width; /* nominal image width (from SOF marker) */ - JDIMENSION image_height; /* nominal image height */ - int num_components; /* # of color components in JPEG image */ - J_COLOR_SPACE jpeg_color_space; /* colorspace of JPEG image */ - - /* Decompression processing parameters --- these fields must be set before - * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes - * them to default values. - */ - - J_COLOR_SPACE out_color_space; /* colorspace for output */ - - unsigned int scale_num, scale_denom; /* fraction by which to scale image */ - - double output_gamma; /* image gamma wanted in output */ - - boolean buffered_image; /* TRUE=multiple output passes */ - boolean raw_data_out; /* TRUE=downsampled data wanted */ - - J_DCT_METHOD dct_method; /* IDCT algorithm selector */ - boolean do_fancy_upsampling; /* TRUE=apply fancy upsampling */ - boolean do_block_smoothing; /* TRUE=apply interblock smoothing */ - - boolean quantize_colors; /* TRUE=colormapped output wanted */ - /* the following are ignored if not quantize_colors: */ - J_DITHER_MODE dither_mode; /* type of color dithering to use */ - boolean two_pass_quantize; /* TRUE=use two-pass color quantization */ - int desired_number_of_colors; /* max # colors to use in created colormap */ - /* these are significant only in buffered-image mode: */ - boolean enable_1pass_quant; /* enable future use of 1-pass quantizer */ - boolean enable_external_quant;/* enable future use of external colormap */ - boolean enable_2pass_quant; /* enable future use of 2-pass quantizer */ - - /* Description of actual output image that will be returned to application. - * These fields are computed by jpeg_start_decompress(). - * You can also use jpeg_calc_output_dimensions() to determine these values - * in advance of calling jpeg_start_decompress(). - */ - - JDIMENSION output_width; /* scaled image width */ - JDIMENSION output_height; /* scaled image height */ - int out_color_components; /* # of color components in out_color_space */ - int output_components; /* # of color components returned */ - /* output_components is 1 (a colormap index) when quantizing colors; - * otherwise it equals out_color_components. - */ - int rec_outbuf_height; /* min recommended height of scanline buffer */ - /* If the buffer passed to jpeg_read_scanlines() is less than this many rows - * high, space and time will be wasted due to unnecessary data copying. - * Usually rec_outbuf_height will be 1 or 2, at most 4. - */ - - /* When quantizing colors, the output colormap is described by these fields. - * The application can supply a colormap by setting colormap non-NULL before - * calling jpeg_start_decompress; otherwise a colormap is created during - * jpeg_start_decompress or jpeg_start_output. - * The map has out_color_components rows and actual_number_of_colors columns. - */ - int actual_number_of_colors; /* number of entries in use */ - JSAMPARRAY colormap; /* The color map as a 2-D pixel array */ - - /* State variables: these variables indicate the progress of decompression. - * The application may examine these but must not modify them. - */ - - /* Row index of next scanline to be read from jpeg_read_scanlines(). - * Application may use this to control its processing loop, e.g., - * "while (output_scanline < output_height)". - */ - JDIMENSION output_scanline; /* 0 .. output_height-1 */ - - /* Current input scan number and number of iMCU rows completed in scan. - * These indicate the progress of the decompressor input side. - */ - int input_scan_number; /* Number of SOS markers seen so far */ - JDIMENSION input_iMCU_row; /* Number of iMCU rows completed */ - - /* The "output scan number" is the notional scan being displayed by the - * output side. The decompressor will not allow output scan/row number - * to get ahead of input scan/row, but it can fall arbitrarily far behind. - */ - int output_scan_number; /* Nominal scan number being displayed */ - JDIMENSION output_iMCU_row; /* Number of iMCU rows read */ - - /* Current progression status. coef_bits[c][i] indicates the precision - * with which component c's DCT coefficient i (in zigzag order) is known. - * It is -1 when no data has yet been received, otherwise it is the point - * transform (shift) value for the most recent scan of the coefficient - * (thus, 0 at completion of the progression). - * This pointer is NULL when reading a non-progressive file. - */ - int (*coef_bits)[DCTSIZE2]; /* -1 or current Al value for each coef */ - - /* Internal JPEG parameters --- the application usually need not look at - * these fields. Note that the decompressor output side may not use - * any parameters that can change between scans. - */ - - /* Quantization and Huffman tables are carried forward across input - * datastreams when processing abbreviated JPEG datastreams. - */ - - JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS]; - /* ptrs to coefficient quantization tables, or NULL if not defined */ - - JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS]; - JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS]; - /* ptrs to Huffman coding tables, or NULL if not defined */ - - /* These parameters are never carried across datastreams, since they - * are given in SOF/SOS markers or defined to be reset by SOI. - */ - - int data_precision; /* bits of precision in image data */ - - jpeg_component_info * comp_info; - /* comp_info[i] describes component that appears i'th in SOF */ - - boolean progressive_mode; /* TRUE if SOFn specifies progressive mode */ - boolean arith_code; /* TRUE=arithmetic coding, FALSE=Huffman */ - - UINT8 arith_dc_L[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ - UINT8 arith_dc_U[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ - UINT8 arith_ac_K[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ - - unsigned int restart_interval; /* MCUs per restart interval, or 0 for no restart */ - - /* These fields record data obtained from optional markers recognized by - * the JPEG library. - */ - boolean saw_JFIF_marker; /* TRUE iff a JFIF APP0 marker was found */ - /* Data copied from JFIF marker; only valid if saw_JFIF_marker is TRUE: */ - UINT8 JFIF_major_version; /* JFIF version number */ - UINT8 JFIF_minor_version; - UINT8 density_unit; /* JFIF code for pixel size units */ - UINT16 X_density; /* Horizontal pixel density */ - UINT16 Y_density; /* Vertical pixel density */ - boolean saw_Adobe_marker; /* TRUE iff an Adobe APP14 marker was found */ - UINT8 Adobe_transform; /* Color transform code from Adobe marker */ - - boolean CCIR601_sampling; /* TRUE=first samples are cosited */ - - /* Aside from the specific data retained from APPn markers known to the - * library, the uninterpreted contents of any or all APPn and COM markers - * can be saved in a list for examination by the application. - */ - jpeg_saved_marker_ptr marker_list; /* Head of list of saved markers */ - - /* Remaining fields are known throughout decompressor, but generally - * should not be touched by a surrounding application. - */ - - /* - * These fields are computed during decompression startup - */ - int max_h_samp_factor; /* largest h_samp_factor */ - int max_v_samp_factor; /* largest v_samp_factor */ - - int min_DCT_scaled_size; /* smallest DCT_scaled_size of any component */ - - JDIMENSION total_iMCU_rows; /* # of iMCU rows in image */ - /* The coefficient controller's input and output progress is measured in - * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows - * in fully interleaved JPEG scans, but are used whether the scan is - * interleaved or not. We define an iMCU row as v_samp_factor DCT block - * rows of each component. Therefore, the IDCT output contains - * v_samp_factor*DCT_scaled_size sample rows of a component per iMCU row. - */ - - JSAMPLE * sample_range_limit; /* table for fast range-limiting */ - - /* - * These fields are valid during any one scan. - * They describe the components and MCUs actually appearing in the scan. - * Note that the decompressor output side must not use these fields. - */ - int comps_in_scan; /* # of JPEG components in this scan */ - jpeg_component_info * cur_comp_info[MAX_COMPS_IN_SCAN]; - /* *cur_comp_info[i] describes component that appears i'th in SOS */ - - JDIMENSION MCUs_per_row; /* # of MCUs across the image */ - JDIMENSION MCU_rows_in_scan; /* # of MCU rows in the image */ - - int blocks_in_MCU; /* # of DCT blocks per MCU */ - int MCU_membership[D_MAX_BLOCKS_IN_MCU]; - /* MCU_membership[i] is index in cur_comp_info of component owning */ - /* i'th block in an MCU */ - - int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ - - /* This field is shared between entropy decoder and marker parser. - * It is either zero or the code of a JPEG marker that has been - * read from the data source, but has not yet been processed. - */ - int unread_marker; - - /* - * Links to decompression subobjects (methods, private variables of modules) - */ - struct jpeg_decomp_master * master; - struct jpeg_d_main_controller * main; - struct jpeg_d_coef_controller * coef; - struct jpeg_d_post_controller * post; - struct jpeg_input_controller * inputctl; - struct jpeg_marker_reader * marker; - struct jpeg_entropy_decoder * entropy; - struct jpeg_inverse_dct * idct; - struct jpeg_upsampler * upsample; - struct jpeg_color_deconverter * cconvert; - struct jpeg_color_quantizer * cquantize; -}; - - -/* "Object" declarations for JPEG modules that may be supplied or called - * directly by the surrounding application. - * As with all objects in the JPEG library, these structs only define the - * publicly visible methods and state variables of a module. Additional - * private fields may exist after the public ones. - */ - - -/* Error handler object */ - -struct jpeg_error_mgr { - /* Error exit handler: does not return to caller */ - JMETHOD(void, error_exit, (j_common_ptr cinfo)); - /* Conditionally emit a trace or warning message */ - JMETHOD(void, emit_message, (j_common_ptr cinfo, int msg_level)); - /* Routine that actually outputs a trace or error message */ - JMETHOD(void, output_message, (j_common_ptr cinfo)); - /* Format a message string for the most recent JPEG error or message */ - JMETHOD(void, format_message, (j_common_ptr cinfo, char * buffer)); -#define JMSG_LENGTH_MAX 200 /* recommended size of format_message buffer */ - /* Reset error state variables at start of a new image */ - JMETHOD(void, reset_error_mgr, (j_common_ptr cinfo)); - - /* The message ID code and any parameters are saved here. - * A message can have one string parameter or up to 8 int parameters. - */ - int msg_code; -#define JMSG_STR_PARM_MAX 80 - union { - int i[8]; - char s[JMSG_STR_PARM_MAX]; - } msg_parm; - - /* Standard state variables for error facility */ - - int trace_level; /* max msg_level that will be displayed */ - - /* For recoverable corrupt-data errors, we emit a warning message, - * but keep going unless emit_message chooses to abort. emit_message - * should count warnings in num_warnings. The surrounding application - * can check for bad data by seeing if num_warnings is nonzero at the - * end of processing. - */ - long num_warnings; /* number of corrupt-data warnings */ - - /* These fields point to the table(s) of error message strings. - * An application can change the table pointer to switch to a different - * message list (typically, to change the language in which errors are - * reported). Some applications may wish to add additional error codes - * that will be handled by the JPEG library error mechanism; the second - * table pointer is used for this purpose. - * - * First table includes all errors generated by JPEG library itself. - * Error code 0 is reserved for a "no such error string" message. - */ - const char * const * jpeg_message_table; /* Library errors */ - int last_jpeg_message; /* Table contains strings 0..last_jpeg_message */ - /* Second table can be added by application (see cjpeg/djpeg for example). - * It contains strings numbered first_addon_message..last_addon_message. - */ - const char * const * addon_message_table; /* Non-library errors */ - int first_addon_message; /* code for first string in addon table */ - int last_addon_message; /* code for last string in addon table */ -}; - - -/* Progress monitor object */ - -struct jpeg_progress_mgr { - JMETHOD(void, progress_monitor, (j_common_ptr cinfo)); - - long pass_counter; /* work units completed in this pass */ - long pass_limit; /* total number of work units in this pass */ - int completed_passes; /* passes completed so far */ - int total_passes; /* total number of passes expected */ -}; - - -/* Data destination object for compression */ - -struct jpeg_destination_mgr { - JOCTET * next_output_byte; /* => next byte to write in buffer */ - size_t free_in_buffer; /* # of byte spaces remaining in buffer */ - - JMETHOD(void, init_destination, (j_compress_ptr cinfo)); - JMETHOD(boolean, empty_output_buffer, (j_compress_ptr cinfo)); - JMETHOD(void, term_destination, (j_compress_ptr cinfo)); -}; - - -/* Data source object for decompression */ - -struct jpeg_source_mgr { - const JOCTET * next_input_byte; /* => next byte to read from buffer */ - size_t bytes_in_buffer; /* # of bytes remaining in buffer */ - - JMETHOD(void, init_source, (j_decompress_ptr cinfo)); - JMETHOD(boolean, fill_input_buffer, (j_decompress_ptr cinfo)); - JMETHOD(void, skip_input_data, (j_decompress_ptr cinfo, long num_bytes)); - JMETHOD(boolean, resync_to_restart, (j_decompress_ptr cinfo, int desired)); - JMETHOD(void, term_source, (j_decompress_ptr cinfo)); -}; - - -/* Memory manager object. - * Allocates "small" objects (a few K total), "large" objects (tens of K), - * and "really big" objects (virtual arrays with backing store if needed). - * The memory manager does not allow individual objects to be freed; rather, - * each created object is assigned to a pool, and whole pools can be freed - * at once. This is faster and more convenient than remembering exactly what - * to free, especially where malloc()/free() are not too speedy. - * NB: alloc routines never return NULL. They exit to error_exit if not - * successful. - */ - -#define JPOOL_PERMANENT 0 /* lasts until master record is destroyed */ -#define JPOOL_IMAGE 1 /* lasts until done with image/datastream */ -#define JPOOL_NUMPOOLS 2 - -typedef struct jvirt_sarray_control * jvirt_sarray_ptr; -typedef struct jvirt_barray_control * jvirt_barray_ptr; - - -struct jpeg_memory_mgr { - /* Method pointers */ - JMETHOD(void *, alloc_small, (j_common_ptr cinfo, int pool_id, - size_t sizeofobject)); - JMETHOD(void FAR *, alloc_large, (j_common_ptr cinfo, int pool_id, - size_t sizeofobject)); - JMETHOD(JSAMPARRAY, alloc_sarray, (j_common_ptr cinfo, int pool_id, - JDIMENSION samplesperrow, - JDIMENSION numrows)); - JMETHOD(JBLOCKARRAY, alloc_barray, (j_common_ptr cinfo, int pool_id, - JDIMENSION blocksperrow, - JDIMENSION numrows)); - JMETHOD(jvirt_sarray_ptr, request_virt_sarray, (j_common_ptr cinfo, - int pool_id, - boolean pre_zero, - JDIMENSION samplesperrow, - JDIMENSION numrows, - JDIMENSION maxaccess)); - JMETHOD(jvirt_barray_ptr, request_virt_barray, (j_common_ptr cinfo, - int pool_id, - boolean pre_zero, - JDIMENSION blocksperrow, - JDIMENSION numrows, - JDIMENSION maxaccess)); - JMETHOD(void, realize_virt_arrays, (j_common_ptr cinfo)); - JMETHOD(JSAMPARRAY, access_virt_sarray, (j_common_ptr cinfo, - jvirt_sarray_ptr ptr, - JDIMENSION start_row, - JDIMENSION num_rows, - boolean writable)); - JMETHOD(JBLOCKARRAY, access_virt_barray, (j_common_ptr cinfo, - jvirt_barray_ptr ptr, - JDIMENSION start_row, - JDIMENSION num_rows, - boolean writable)); - JMETHOD(void, free_pool, (j_common_ptr cinfo, int pool_id)); - JMETHOD(void, self_destruct, (j_common_ptr cinfo)); - - /* Limit on memory allocation for this JPEG object. (Note that this is - * merely advisory, not a guaranteed maximum; it only affects the space - * used for virtual-array buffers.) May be changed by outer application - * after creating the JPEG object. - */ - long max_memory_to_use; - - /* Maximum allocation request accepted by alloc_large. */ - long max_alloc_chunk; -}; - - -/* Routine signature for application-supplied marker processing methods. - * Need not pass marker code since it is stored in cinfo->unread_marker. - */ -typedef JMETHOD(boolean, jpeg_marker_parser_method, (j_decompress_ptr cinfo)); - - -/* Declarations for routines called by application. - * The JPP macro hides prototype parameters from compilers that can't cope. - * Note JPP requires double parentheses. - */ - -#ifdef HAVE_PROTOTYPES -#define JPP(arglist) arglist -#else -#define JPP(arglist) () -#endif - - -/* Short forms of external names for systems with brain-damaged linkers. - * We shorten external names to be unique in the first six letters, which - * is good enough for all known systems. - * (If your compiler itself needs names to be unique in less than 15 - * characters, you are out of luck. Get a better compiler.) - */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jpeg_std_error jStdError -#define jpeg_CreateCompress jCreaCompress -#define jpeg_CreateDecompress jCreaDecompress -#define jpeg_destroy_compress jDestCompress -#define jpeg_destroy_decompress jDestDecompress -#define jpeg_stdio_dest jStdDest -#define jpeg_stdio_src jStdSrc -#define jpeg_set_defaults jSetDefaults -#define jpeg_set_colorspace jSetColorspace -#define jpeg_default_colorspace jDefColorspace -#define jpeg_set_quality jSetQuality -#define jpeg_set_linear_quality jSetLQuality -#define jpeg_add_quant_table jAddQuantTable -#define jpeg_quality_scaling jQualityScaling -#define jpeg_simple_progression jSimProgress -#define jpeg_suppress_tables jSuppressTables -#define jpeg_alloc_quant_table jAlcQTable -#define jpeg_alloc_huff_table jAlcHTable -#define jpeg_start_compress jStrtCompress -#define jpeg_write_scanlines jWrtScanlines -#define jpeg_finish_compress jFinCompress -#define jpeg_write_raw_data jWrtRawData -#define jpeg_write_marker jWrtMarker -#define jpeg_write_m_header jWrtMHeader -#define jpeg_write_m_byte jWrtMByte -#define jpeg_write_tables jWrtTables -#define jpeg_read_header jReadHeader -#define jpeg_start_decompress jStrtDecompress -#define jpeg_read_scanlines jReadScanlines -#define jpeg_finish_decompress jFinDecompress -#define jpeg_read_raw_data jReadRawData -#define jpeg_has_multiple_scans jHasMultScn -#define jpeg_start_output jStrtOutput -#define jpeg_finish_output jFinOutput -#define jpeg_input_complete jInComplete -#define jpeg_new_colormap jNewCMap -#define jpeg_consume_input jConsumeInput -#define jpeg_calc_output_dimensions jCalcDimensions -#define jpeg_save_markers jSaveMarkers -#define jpeg_set_marker_processor jSetMarker -#define jpeg_read_coefficients jReadCoefs -#define jpeg_write_coefficients jWrtCoefs -#define jpeg_copy_critical_parameters jCopyCrit -#define jpeg_abort_compress jAbrtCompress -#define jpeg_abort_decompress jAbrtDecompress -#define jpeg_abort jAbort -#define jpeg_destroy jDestroy -#define jpeg_resync_to_restart jResyncRestart -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - - -/* Default error-management setup */ -EXTERN(struct jpeg_error_mgr *) jpeg_std_error - JPP((struct jpeg_error_mgr * err)); - -/* Initialization of JPEG compression objects. - * jpeg_create_compress() and jpeg_create_decompress() are the exported - * names that applications should call. These expand to calls on - * jpeg_CreateCompress and jpeg_CreateDecompress with additional information - * passed for version mismatch checking. - * NB: you must set up the error-manager BEFORE calling jpeg_create_xxx. - */ -#define jpeg_create_compress(cinfo) \ - jpeg_CreateCompress((cinfo), JPEG_LIB_VERSION, \ - (size_t) sizeof(struct jpeg_compress_struct)) -#define jpeg_create_decompress(cinfo) \ - jpeg_CreateDecompress((cinfo), JPEG_LIB_VERSION, \ - (size_t) sizeof(struct jpeg_decompress_struct)) -EXTERN(void) jpeg_CreateCompress JPP((j_compress_ptr cinfo, - int version, size_t structsize)); -EXTERN(void) jpeg_CreateDecompress JPP((j_decompress_ptr cinfo, - int version, size_t structsize)); -/* Destruction of JPEG compression objects */ -EXTERN(void) jpeg_destroy_compress JPP((j_compress_ptr cinfo)); -EXTERN(void) jpeg_destroy_decompress JPP((j_decompress_ptr cinfo)); - -/* Standard data source and destination managers: stdio streams. */ -/* Caller is responsible for opening the file before and closing after. */ -EXTERN(void) jpeg_stdio_dest JPP((j_compress_ptr cinfo, FILE * outfile)); -EXTERN(void) jpeg_stdio_src JPP((j_decompress_ptr cinfo, FILE * infile)); - -/* Default parameter setup for compression */ -EXTERN(void) jpeg_set_defaults JPP((j_compress_ptr cinfo)); -/* Compression parameter setup aids */ -EXTERN(void) jpeg_set_colorspace JPP((j_compress_ptr cinfo, - J_COLOR_SPACE colorspace)); -EXTERN(void) jpeg_default_colorspace JPP((j_compress_ptr cinfo)); -EXTERN(void) jpeg_set_quality JPP((j_compress_ptr cinfo, int quality, - boolean force_baseline)); -EXTERN(void) jpeg_set_linear_quality JPP((j_compress_ptr cinfo, - int scale_factor, - boolean force_baseline)); -EXTERN(void) jpeg_add_quant_table JPP((j_compress_ptr cinfo, int which_tbl, - const unsigned int *basic_table, - int scale_factor, - boolean force_baseline)); -EXTERN(int) jpeg_quality_scaling JPP((int quality)); -EXTERN(void) jpeg_simple_progression JPP((j_compress_ptr cinfo)); -EXTERN(void) jpeg_suppress_tables JPP((j_compress_ptr cinfo, - boolean suppress)); -EXTERN(JQUANT_TBL *) jpeg_alloc_quant_table JPP((j_common_ptr cinfo)); -EXTERN(JHUFF_TBL *) jpeg_alloc_huff_table JPP((j_common_ptr cinfo)); - -/* Main entry points for compression */ -EXTERN(void) jpeg_start_compress JPP((j_compress_ptr cinfo, - boolean write_all_tables)); -EXTERN(JDIMENSION) jpeg_write_scanlines JPP((j_compress_ptr cinfo, - JSAMPARRAY scanlines, - JDIMENSION num_lines)); -EXTERN(void) jpeg_finish_compress JPP((j_compress_ptr cinfo)); - -/* Replaces jpeg_write_scanlines when writing raw downsampled data. */ -EXTERN(JDIMENSION) jpeg_write_raw_data JPP((j_compress_ptr cinfo, - JSAMPIMAGE data, - JDIMENSION num_lines)); - -/* Write a special marker. See libjpeg.doc concerning safe usage. */ -EXTERN(void) jpeg_write_marker - JPP((j_compress_ptr cinfo, int marker, - const JOCTET * dataptr, unsigned int datalen)); -/* Same, but piecemeal. */ -EXTERN(void) jpeg_write_m_header - JPP((j_compress_ptr cinfo, int marker, unsigned int datalen)); -EXTERN(void) jpeg_write_m_byte - JPP((j_compress_ptr cinfo, int val)); - -/* Alternate compression function: just write an abbreviated table file */ -EXTERN(void) jpeg_write_tables JPP((j_compress_ptr cinfo)); - -/* Decompression startup: read start of JPEG datastream to see what's there */ -EXTERN(int) jpeg_read_header JPP((j_decompress_ptr cinfo, - boolean require_image)); -/* Return value is one of: */ -#define JPEG_SUSPENDED 0 /* Suspended due to lack of input data */ -#define JPEG_HEADER_OK 1 /* Found valid image datastream */ -#define JPEG_HEADER_TABLES_ONLY 2 /* Found valid table-specs-only datastream */ -/* If you pass require_image = TRUE (normal case), you need not check for - * a TABLES_ONLY return code; an abbreviated file will cause an error exit. - * JPEG_SUSPENDED is only possible if you use a data source module that can - * give a suspension return (the stdio source module doesn't). - */ - -/* Main entry points for decompression */ -EXTERN(boolean) jpeg_start_decompress JPP((j_decompress_ptr cinfo)); -EXTERN(JDIMENSION) jpeg_read_scanlines JPP((j_decompress_ptr cinfo, - JSAMPARRAY scanlines, - JDIMENSION max_lines)); -EXTERN(boolean) jpeg_finish_decompress JPP((j_decompress_ptr cinfo)); - -/* Replaces jpeg_read_scanlines when reading raw downsampled data. */ -EXTERN(JDIMENSION) jpeg_read_raw_data JPP((j_decompress_ptr cinfo, - JSAMPIMAGE data, - JDIMENSION max_lines)); - -/* Additional entry points for buffered-image mode. */ -EXTERN(boolean) jpeg_has_multiple_scans JPP((j_decompress_ptr cinfo)); -EXTERN(boolean) jpeg_start_output JPP((j_decompress_ptr cinfo, - int scan_number)); -EXTERN(boolean) jpeg_finish_output JPP((j_decompress_ptr cinfo)); -EXTERN(boolean) jpeg_input_complete JPP((j_decompress_ptr cinfo)); -EXTERN(void) jpeg_new_colormap JPP((j_decompress_ptr cinfo)); -EXTERN(int) jpeg_consume_input JPP((j_decompress_ptr cinfo)); -/* Return value is one of: */ -/* #define JPEG_SUSPENDED 0 Suspended due to lack of input data */ -#define JPEG_REACHED_SOS 1 /* Reached start of new scan */ -#define JPEG_REACHED_EOI 2 /* Reached end of image */ -#define JPEG_ROW_COMPLETED 3 /* Completed one iMCU row */ -#define JPEG_SCAN_COMPLETED 4 /* Completed last iMCU row of a scan */ - -/* Precalculate output dimensions for current decompression parameters. */ -EXTERN(void) jpeg_calc_output_dimensions JPP((j_decompress_ptr cinfo)); - -/* Control saving of COM and APPn markers into marker_list. */ -EXTERN(void) jpeg_save_markers - JPP((j_decompress_ptr cinfo, int marker_code, - unsigned int length_limit)); - -/* Install a special processing method for COM or APPn markers. */ -EXTERN(void) jpeg_set_marker_processor - JPP((j_decompress_ptr cinfo, int marker_code, - jpeg_marker_parser_method routine)); - -/* Read or write raw DCT coefficients --- useful for lossless transcoding. */ -EXTERN(jvirt_barray_ptr *) jpeg_read_coefficients JPP((j_decompress_ptr cinfo)); -EXTERN(void) jpeg_write_coefficients JPP((j_compress_ptr cinfo, - jvirt_barray_ptr * coef_arrays)); -EXTERN(void) jpeg_copy_critical_parameters JPP((j_decompress_ptr srcinfo, - j_compress_ptr dstinfo)); - -/* If you choose to abort compression or decompression before completing - * jpeg_finish_(de)compress, then you need to clean up to release memory, - * temporary files, etc. You can just call jpeg_destroy_(de)compress - * if you're done with the JPEG object, but if you want to clean it up and - * reuse it, call this: - */ -EXTERN(void) jpeg_abort_compress JPP((j_compress_ptr cinfo)); -EXTERN(void) jpeg_abort_decompress JPP((j_decompress_ptr cinfo)); - -/* Generic versions of jpeg_abort and jpeg_destroy that work on either - * flavor of JPEG object. These may be more convenient in some places. - */ -EXTERN(void) jpeg_abort JPP((j_common_ptr cinfo)); -EXTERN(void) jpeg_destroy JPP((j_common_ptr cinfo)); - -/* Default restart-marker-resync procedure for use by data source modules */ -EXTERN(boolean) jpeg_resync_to_restart JPP((j_decompress_ptr cinfo, - int desired)); - - -/* These marker codes are exported since applications and data source modules - * are likely to want to use them. - */ - -#define JPEG_RST0 0xD0 /* RST0 marker code */ -#define JPEG_EOI 0xD9 /* EOI marker code */ -#define JPEG_APP0 0xE0 /* APP0 marker code */ -#define JPEG_COM 0xFE /* COM marker code */ - - -/* If we have a brain-damaged compiler that emits warnings (or worse, errors) - * for structure definitions that are never filled in, keep it quiet by - * supplying dummy definitions for the various substructures. - */ - -#ifdef INCOMPLETE_TYPES_BROKEN -#ifndef JPEG_INTERNALS /* will be defined in jpegint.h */ -struct jvirt_sarray_control { long dummy; }; -struct jvirt_barray_control { long dummy; }; -struct jpeg_comp_master { long dummy; }; -struct jpeg_c_main_controller { long dummy; }; -struct jpeg_c_prep_controller { long dummy; }; -struct jpeg_c_coef_controller { long dummy; }; -struct jpeg_marker_writer { long dummy; }; -struct jpeg_color_converter { long dummy; }; -struct jpeg_downsampler { long dummy; }; -struct jpeg_forward_dct { long dummy; }; -struct jpeg_entropy_encoder { long dummy; }; -struct jpeg_decomp_master { long dummy; }; -struct jpeg_d_main_controller { long dummy; }; -struct jpeg_d_coef_controller { long dummy; }; -struct jpeg_d_post_controller { long dummy; }; -struct jpeg_input_controller { long dummy; }; -struct jpeg_marker_reader { long dummy; }; -struct jpeg_entropy_decoder { long dummy; }; -struct jpeg_inverse_dct { long dummy; }; -struct jpeg_upsampler { long dummy; }; -struct jpeg_color_deconverter { long dummy; }; -struct jpeg_color_quantizer { long dummy; }; -#endif /* JPEG_INTERNALS */ -#endif /* INCOMPLETE_TYPES_BROKEN */ - - -/* - * The JPEG library modules define JPEG_INTERNALS before including this file. - * The internal structure declarations are read only when that is true. - * Applications using the library should not include jpegint.h, but may wish - * to include jerror.h. - */ - -#ifdef JPEG_INTERNALS -#include "jpegint.h" /* fetch private declarations */ -#include "jerror.h" /* fetch error codes too */ -#endif - -#ifdef __cplusplus -} -#endif - -#endif /* JPEGLIB_H */ diff --git a/project/jni/jpeg/install-sh b/project/jni/jpeg/install-sh deleted file mode 100755 index e8436696c..000000000 --- a/project/jni/jpeg/install-sh +++ /dev/null @@ -1,250 +0,0 @@ -#!/bin/sh -# -# install - install a program, script, or datafile -# This comes from X11R5 (mit/util/scripts/install.sh). -# -# Copyright 1991 by the Massachusetts Institute of Technology -# -# Permission to use, copy, modify, distribute, and sell this software and its -# documentation for any purpose is hereby granted without fee, provided that -# the above copyright notice appear in all copies and that both that -# copyright notice and this permission notice appear in supporting -# documentation, and that the name of M.I.T. not be used in advertising or -# publicity pertaining to distribution of the software without specific, -# written prior permission. M.I.T. makes no representations about the -# suitability of this software for any purpose. It is provided "as is" -# without express or implied warranty. -# -# Calling this script install-sh is preferred over install.sh, to prevent -# `make' implicit rules from creating a file called install from it -# when there is no Makefile. -# -# This script is compatible with the BSD install script, but was written -# from scratch. It can only install one file at a time, a restriction -# shared with many OS's install programs. - - -# set DOITPROG to echo to test this script - -# Don't use :- since 4.3BSD and earlier shells don't like it. -doit="${DOITPROG-}" - - -# put in absolute paths if you don't have them in your path; or use env. vars. - -mvprog="${MVPROG-mv}" -cpprog="${CPPROG-cp}" -chmodprog="${CHMODPROG-chmod}" -chownprog="${CHOWNPROG-chown}" -chgrpprog="${CHGRPPROG-chgrp}" -stripprog="${STRIPPROG-strip}" -rmprog="${RMPROG-rm}" -mkdirprog="${MKDIRPROG-mkdir}" - -transformbasename="" -transform_arg="" -instcmd="$mvprog" -chmodcmd="$chmodprog 0755" -chowncmd="" -chgrpcmd="" -stripcmd="" -rmcmd="$rmprog -f" -mvcmd="$mvprog" -src="" -dst="" -dir_arg="" - -while [ x"$1" != x ]; do - case $1 in - -c) instcmd="$cpprog" - shift - continue;; - - -d) dir_arg=true - shift - continue;; - - -m) chmodcmd="$chmodprog $2" - shift - shift - continue;; - - -o) chowncmd="$chownprog $2" - shift - shift - continue;; - - -g) chgrpcmd="$chgrpprog $2" - shift - shift - continue;; - - -s) stripcmd="$stripprog" - shift - continue;; - - -t=*) transformarg=`echo $1 | sed 's/-t=//'` - shift - continue;; - - -b=*) transformbasename=`echo $1 | sed 's/-b=//'` - shift - continue;; - - *) if [ x"$src" = x ] - then - src=$1 - else - # this colon is to work around a 386BSD /bin/sh bug - : - dst=$1 - fi - shift - continue;; - esac -done - -if [ x"$src" = x ] -then - echo "install: no input file specified" - exit 1 -else - true -fi - -if [ x"$dir_arg" != x ]; then - dst=$src - src="" - - if [ -d $dst ]; then - instcmd=: - else - instcmd=mkdir - fi -else - -# Waiting for this to be detected by the "$instcmd $src $dsttmp" command -# might cause directories to be created, which would be especially bad -# if $src (and thus $dsttmp) contains '*'. - - if [ -f $src -o -d $src ] - then - true - else - echo "install: $src does not exist" - exit 1 - fi - - if [ x"$dst" = x ] - then - echo "install: no destination specified" - exit 1 - else - true - fi - -# If destination is a directory, append the input filename; if your system -# does not like double slashes in filenames, you may need to add some logic - - if [ -d $dst ] - then - dst="$dst"/`basename $src` - else - true - fi -fi - -## this sed command emulates the dirname command -dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'` - -# Make sure that the destination directory exists. -# this part is taken from Noah Friedman's mkinstalldirs script - -# Skip lots of stat calls in the usual case. -if [ ! -d "$dstdir" ]; then -defaultIFS=' -' -IFS="${IFS-${defaultIFS}}" - -oIFS="${IFS}" -# Some sh's can't handle IFS=/ for some reason. -IFS='%' -set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'` -IFS="${oIFS}" - -pathcomp='' - -while [ $# -ne 0 ] ; do - pathcomp="${pathcomp}${1}" - shift - - if [ ! -d "${pathcomp}" ] ; - then - $mkdirprog "${pathcomp}" - else - true - fi - - pathcomp="${pathcomp}/" -done -fi - -if [ x"$dir_arg" != x ] -then - $doit $instcmd $dst && - - if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi && - if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi && - if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi && - if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi -else - -# If we're going to rename the final executable, determine the name now. - - if [ x"$transformarg" = x ] - then - dstfile=`basename $dst` - else - dstfile=`basename $dst $transformbasename | - sed $transformarg`$transformbasename - fi - -# don't allow the sed command to completely eliminate the filename - - if [ x"$dstfile" = x ] - then - dstfile=`basename $dst` - else - true - fi - -# Make a temp file name in the proper directory. - - dsttmp=$dstdir/#inst.$$# - -# Move or copy the file name to the temp name - - $doit $instcmd $src $dsttmp && - - trap "rm -f ${dsttmp}" 0 && - -# and set any options; do chmod last to preserve setuid bits - -# If any of these fail, we abort the whole thing. If we want to -# ignore errors from any of these, just make sure not to ignore -# errors from the above "$doit $instcmd $src $dsttmp" command. - - if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi && - if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi && - if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi && - if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi && - -# Now rename the file to the real destination. - - $doit $rmcmd -f $dstdir/$dstfile && - $doit $mvcmd $dsttmp $dstdir/$dstfile - -fi && - - -exit 0 diff --git a/project/jni/jpeg/install.doc b/project/jni/jpeg/install.doc deleted file mode 100644 index 3702b986b..000000000 --- a/project/jni/jpeg/install.doc +++ /dev/null @@ -1,1063 +0,0 @@ -INSTALLATION INSTRUCTIONS for the Independent JPEG Group's JPEG software - -Copyright (C) 1991-1998, Thomas G. Lane. -This file is part of the Independent JPEG Group's software. -For conditions of distribution and use, see the accompanying README file. - - -This file explains how to configure and install the IJG software. We have -tried to make this software extremely portable and flexible, so that it can be -adapted to almost any environment. The downside of this decision is that the -installation process is complicated. We have provided shortcuts to simplify -the task on common systems. But in any case, you will need at least a little -familiarity with C programming and program build procedures for your system. - -If you are only using this software as part of a larger program, the larger -program's installation procedure may take care of configuring the IJG code. -For example, Ghostscript's installation script will configure the IJG code. -You don't need to read this file if you just want to compile Ghostscript. - -If you are on a Unix machine, you may not need to read this file at all. -Try doing - ./configure - make - make test -If that doesn't complain, do - make install -(better do "make -n install" first to see if the makefile will put the files -where you want them). Read further if you run into snags or want to customize -the code for your system. - - -TABLE OF CONTENTS ------------------ - -Before you start -Configuring the software: - using the automatic "configure" script - using one of the supplied jconfig and makefile files - by hand -Building the software -Testing the software -Installing the software -Optional stuff -Optimization -Hints for specific systems - - -BEFORE YOU START -================ - -Before installing the software you must unpack the distributed source code. -Since you are reading this file, you have probably already succeeded in this -task. However, there is a potential for error if you needed to convert the -files to the local standard text file format (for example, if you are on -MS-DOS you may have converted LF end-of-line to CR/LF). You must apply -such conversion to all the files EXCEPT those whose names begin with "test". -The test files contain binary data; if you change them in any way then the -self-test will give bad results. - -Please check the last section of this file to see if there are hints for the -specific machine or compiler you are using. - - -CONFIGURING THE SOFTWARE -======================== - -To configure the IJG code for your system, you need to create two files: - * jconfig.h: contains values for system-dependent #define symbols. - * Makefile: controls the compilation process. -(On a non-Unix machine, you may create "project files" or some other -substitute for a Makefile. jconfig.h is needed in any environment.) - -We provide three different ways to generate these files: - * On a Unix system, you can just run the "configure" script. - * We provide sample jconfig files and makefiles for popular machines; - if your machine matches one of the samples, just copy the right sample - files to jconfig.h and Makefile. - * If all else fails, read the instructions below and make your own files. - - -Configuring the software using the automatic "configure" script ---------------------------------------------------------------- - -If you are on a Unix machine, you can just type - ./configure -and let the configure script construct appropriate configuration files. -If you're using "csh" on an old version of System V, you might need to type - sh configure -instead to prevent csh from trying to execute configure itself. -Expect configure to run for a few minutes, particularly on slower machines; -it works by compiling a series of test programs. - -Configure was created with GNU Autoconf and it follows the usual conventions -for GNU configure scripts. It makes a few assumptions that you may want to -override. You can do this by providing optional switches to configure: - -* If you want to build libjpeg as a shared library, say - ./configure --enable-shared -To get both shared and static libraries, say - ./configure --enable-shared --enable-static -Note that these switches invoke GNU libtool to take care of system-dependent -shared library building methods. If things don't work this way, please try -running configure without either switch; that should build a static library -without using libtool. If that works, your problem is probably with libtool -not with the IJG code. libtool is fairly new and doesn't support all flavors -of Unix yet. (You might be able to find a newer version of libtool than the -one included with libjpeg; see ftp.gnu.org. Report libtool problems to -bug-libtool@gnu.org.) - -* Configure will use gcc (GNU C compiler) if it's available, otherwise cc. -To force a particular compiler to be selected, use the CC option, for example - ./configure CC='cc' -The same method can be used to include any unusual compiler switches. -For example, on HP-UX you probably want to say - ./configure CC='cc -Aa' -to get HP's compiler to run in ANSI mode. - -* The default CFLAGS setting is "-O" for non-gcc compilers, "-O2" for gcc. -You can override this by saying, for example, - ./configure CFLAGS='-g' -if you want to compile with debugging support. - -* Configure will set up the makefile so that "make install" will install files -into /usr/local/bin, /usr/local/man, etc. You can specify an installation -prefix other than "/usr/local" by giving configure the option "--prefix=PATH". - -* If you don't have a lot of swap space, you may need to enable the IJG -software's internal virtual memory mechanism. To do this, give the option -"--enable-maxmem=N" where N is the default maxmemory limit in megabytes. -This is discussed in more detail under "Selecting a memory manager", below. -You probably don't need to worry about this on reasonably-sized Unix machines, -unless you plan to process very large images. - -Configure has some other features that are useful if you are cross-compiling -or working in a network of multiple machine types; but if you need those -features, you probably already know how to use them. - - -Configuring the software using one of the supplied jconfig and makefile files ------------------------------------------------------------------------------ - -If you have one of these systems, you can just use the provided configuration -files: - -Makefile jconfig file System and/or compiler - -makefile.manx jconfig.manx Amiga, Manx Aztec C -makefile.sas jconfig.sas Amiga, SAS C -makeproj.mac jconfig.mac Apple Macintosh, Metrowerks CodeWarrior -mak*jpeg.st jconfig.st Atari ST/STE/TT, Pure C or Turbo C -makefile.bcc jconfig.bcc MS-DOS or OS/2, Borland C -makefile.dj jconfig.dj MS-DOS, DJGPP (Delorie's port of GNU C) -makefile.mc6 jconfig.mc6 MS-DOS, Microsoft C (16-bit only) -makefile.wat jconfig.wat MS-DOS, OS/2, or Windows NT, Watcom C -makefile.vc jconfig.vc Windows NT/95, MS Visual C++ -make*.ds jconfig.vc Windows NT/95, MS Developer Studio -makefile.mms jconfig.vms Digital VMS, with MMS software -makefile.vms jconfig.vms Digital VMS, without MMS software - -Copy the proper jconfig file to jconfig.h and the makefile to Makefile (or -whatever your system uses as the standard makefile name). For more info see -the appropriate system-specific hints section near the end of this file. - - -Configuring the software by hand --------------------------------- - -First, generate a jconfig.h file. If you are moderately familiar with C, -the comments in jconfig.doc should be enough information to do this; just -copy jconfig.doc to jconfig.h and edit it appropriately. Otherwise, you may -prefer to use the ckconfig.c program. You will need to compile and execute -ckconfig.c by hand --- we hope you know at least enough to do that. -ckconfig.c may not compile the first try (in fact, the whole idea is for it -to fail if anything is going to). If you get compile errors, fix them by -editing ckconfig.c according to the directions given in ckconfig.c. Once -you get it to run, it will write a suitable jconfig.h file, and will also -print out some advice about which makefile to use. - -You may also want to look at the canned jconfig files, if there is one for a -system similar to yours. - -Second, select a makefile and copy it to Makefile (or whatever your system -uses as the standard makefile name). The most generic makefiles we provide -are - makefile.ansi: if your C compiler supports function prototypes - makefile.unix: if not. -(You have function prototypes if ckconfig.c put "#define HAVE_PROTOTYPES" -in jconfig.h.) You may want to start from one of the other makefiles if -there is one for a system similar to yours. - -Look over the selected Makefile and adjust options as needed. In particular -you may want to change the CC and CFLAGS definitions. For instance, if you -are using GCC, set CC=gcc. If you had to use any compiler switches to get -ckconfig.c to work, make sure the same switches are in CFLAGS. - -If you are on a system that doesn't use makefiles, you'll need to set up -project files (or whatever you do use) to compile all the source files and -link them into executable files cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom. -See the file lists in any of the makefiles to find out which files go into -each program. Note that the provided makefiles all make a "library" file -libjpeg first, but you don't have to do that if you don't want to; the file -lists identify which source files are actually needed for compression, -decompression, or both. As a last resort, you can make a batch script that -just compiles everything and links it all together; makefile.vms is an example -of this (it's for VMS systems that have no make-like utility). - -Here are comments about some specific configuration decisions you'll -need to make: - -Command line style ------------------- - -These programs can use a Unix-like command line style which supports -redirection and piping, like this: - cjpeg inputfile >outputfile - cjpeg outputfile - source program | cjpeg >outputfile -The simpler "two file" command line style is just - cjpeg inputfile outputfile -You may prefer the two-file style, particularly if you don't have pipes. - -You MUST use two-file style on any system that doesn't cope well with binary -data fed through stdin/stdout; this is true for some MS-DOS compilers, for -example. If you're not on a Unix system, it's safest to assume you need -two-file style. (But if your compiler provides either the Posix-standard -fdopen() library routine or a Microsoft-compatible setmode() routine, you -can safely use the Unix command line style, by defining USE_FDOPEN or -USE_SETMODE respectively.) - -To use the two-file style, make jconfig.h say "#define TWO_FILE_COMMANDLINE". - -Selecting a memory manager --------------------------- - -The IJG code is capable of working on images that are too big to fit in main -memory; data is swapped out to temporary files as necessary. However, the -code to do this is rather system-dependent. We provide five different -memory managers: - -* jmemansi.c This version uses the ANSI-standard library routine tmpfile(), - which not all non-ANSI systems have. On some systems - tmpfile() may put the temporary file in a non-optimal - location; if you don't like what it does, use jmemname.c. - -* jmemname.c This version creates named temporary files. For anything - except a Unix machine, you'll need to configure the - select_file_name() routine appropriately; see the comments - near the head of jmemname.c. If you use this version, define - NEED_SIGNAL_CATCHER in jconfig.h to make sure the temp files - are removed if the program is aborted. - -* jmemnobs.c (That stands for No Backing Store :-).) This will compile on - almost any system, but it assumes you have enough main memory - or virtual memory to hold the biggest images you work with. - -* jmemdos.c This should be used with most 16-bit MS-DOS compilers. - See the system-specific notes about MS-DOS for more info. - IMPORTANT: if you use this, define USE_MSDOS_MEMMGR in - jconfig.h, and include the assembly file jmemdosa.asm in the - programs. The supplied makefiles and jconfig files for - 16-bit MS-DOS compilers already do both. - -* jmemmac.c Custom version for Apple Macintosh; see the system-specific - notes for Macintosh for more info. - -To use a particular memory manager, change the SYSDEPMEM variable in your -makefile to equal the corresponding object file name (for example, jmemansi.o -or jmemansi.obj for jmemansi.c). - -If you have plenty of (real or virtual) main memory, just use jmemnobs.c. -"Plenty" means about ten bytes for every pixel in the largest images -you plan to process, so a lot of systems don't meet this criterion. -If yours doesn't, try jmemansi.c first. If that doesn't compile, you'll have -to use jmemname.c; be sure to adjust select_file_name() for local conditions. -You may also need to change unlink() to remove() in close_backing_store(). - -Except with jmemnobs.c or jmemmac.c, you need to adjust the DEFAULT_MAX_MEM -setting to a reasonable value for your system (either by adding a #define for -DEFAULT_MAX_MEM to jconfig.h, or by adding a -D switch to the Makefile). -This value limits the amount of data space the program will attempt to -allocate. Code and static data space isn't counted, so the actual memory -needs for cjpeg or djpeg are typically 100 to 150Kb more than the max-memory -setting. Larger max-memory settings reduce the amount of I/O needed to -process a large image, but too large a value can result in "insufficient -memory" failures. On most Unix machines (and other systems with virtual -memory), just set DEFAULT_MAX_MEM to several million and forget it. At the -other end of the spectrum, for MS-DOS machines you probably can't go much -above 300K to 400K. (On MS-DOS the value refers to conventional memory only. -Extended/expanded memory is handled separately by jmemdos.c.) - - -BUILDING THE SOFTWARE -===================== - -Now you should be able to compile the software. Just say "make" (or -whatever's necessary to start the compilation). Have a cup of coffee. - -Here are some things that could go wrong: - -If your compiler complains about undefined structures, you should be able to -shut it up by putting "#define INCOMPLETE_TYPES_BROKEN" in jconfig.h. - -If you have trouble with missing system include files or inclusion of the -wrong ones, read jinclude.h. This shouldn't happen if you used configure -or ckconfig.c to set up jconfig.h. - -There are a fair number of routines that do not use all of their parameters; -some compilers will issue warnings about this, which you can ignore. There -are also a few configuration checks that may give "unreachable code" warnings. -Any other warning deserves investigation. - -If you don't have a getenv() library routine, define NO_GETENV. - -Also see the system-specific hints, below. - - -TESTING THE SOFTWARE -==================== - -As a quick test of functionality we've included a small sample image in -several forms: - testorig.jpg Starting point for the djpeg tests. - testimg.ppm The output of djpeg testorig.jpg - testimg.bmp The output of djpeg -bmp -colors 256 testorig.jpg - testimg.jpg The output of cjpeg testimg.ppm - testprog.jpg Progressive-mode equivalent of testorig.jpg. - testimgp.jpg The output of cjpeg -progressive -optimize testimg.ppm -(The first- and second-generation .jpg files aren't identical since JPEG is -lossy.) If you can generate duplicates of the testimg* files then you -probably have working programs. - -With most of the makefiles, "make test" will perform the necessary -comparisons. - -If you're using a makefile that doesn't provide the test option, run djpeg -and cjpeg by hand and compare the output files to testimg* with whatever -binary file comparison tool you have. The files should be bit-for-bit -identical. - -If the programs complain "MAX_ALLOC_CHUNK is wrong, please fix", then you -need to reduce MAX_ALLOC_CHUNK to a value that fits in type size_t. -Try adding "#define MAX_ALLOC_CHUNK 65520L" to jconfig.h. A less likely -configuration error is "ALIGN_TYPE is wrong, please fix": defining ALIGN_TYPE -as long should take care of that one. - -If the cjpeg test run fails with "Missing Huffman code table entry", it's a -good bet that you needed to define RIGHT_SHIFT_IS_UNSIGNED. Go back to the -configuration step and run ckconfig.c. (This is a good plan for any other -test failure, too.) - -If you are using Unix (one-file) command line style on a non-Unix system, -it's a good idea to check that binary I/O through stdin/stdout actually -works. You should get the same results from "djpeg out.ppm" -as from "djpeg -outfile out.ppm testorig.jpg". Note that the makefiles all -use the latter style and therefore do not exercise stdin/stdout! If this -check fails, try recompiling with USE_SETMODE or USE_FDOPEN defined. -If it still doesn't work, better use two-file style. - -If you chose a memory manager other than jmemnobs.c, you should test that -temporary-file usage works. Try "djpeg -bmp -colors 256 -max 0 testorig.jpg" -and make sure its output matches testimg.bmp. If you have any really large -images handy, try compressing them with -optimize and/or decompressing with --colors 256 to make sure your DEFAULT_MAX_MEM setting is not too large. - -NOTE: this is far from an exhaustive test of the JPEG software; some modules, -such as 1-pass color quantization, are not exercised at all. It's just a -quick test to give you some confidence that you haven't missed something -major. - - -INSTALLING THE SOFTWARE -======================= - -Once you're done with the above steps, you can install the software by -copying the executable files (cjpeg, djpeg, jpegtran, rdjpgcom, and wrjpgcom) -to wherever you normally install programs. On Unix systems, you'll also want -to put the man pages (cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1) -in the man-page directory. The pre-fab makefiles don't support this step -since there's such a wide variety of installation procedures on different -systems. - -If you generated a Makefile with the "configure" script, you can just say - make install -to install the programs and their man pages into the standard places. -(You'll probably need to be root to do this.) We recommend first saying - make -n install -to see where configure thought the files should go. You may need to edit -the Makefile, particularly if your system's conventions for man page -filenames don't match what configure expects. - -If you want to install the IJG library itself, for use in compiling other -programs besides ours, then you need to put the four include files - jpeglib.h jerror.h jconfig.h jmorecfg.h -into your include-file directory, and put the library file libjpeg.a -(extension may vary depending on system) wherever library files go. -If you generated a Makefile with "configure", it will do what it thinks -is the right thing if you say - make install-lib - - -OPTIONAL STUFF -============== - -Progress monitor: - -If you like, you can #define PROGRESS_REPORT (in jconfig.h) to enable display -of percent-done progress reports. The routine provided in cdjpeg.c merely -prints percentages to stderr, but you can customize it to do something -fancier. - -Utah RLE file format support: - -We distribute the software with support for RLE image files (Utah Raster -Toolkit format) disabled, because the RLE support won't compile without the -Utah library. If you have URT version 3.1 or later, you can enable RLE -support as follows: - 1. #define RLE_SUPPORTED in jconfig.h. - 2. Add a -I option to CFLAGS in the Makefile for the directory - containing the URT .h files (typically the "include" - subdirectory of the URT distribution). - 3. Add -L... -lrle to LDLIBS in the Makefile, where ... specifies - the directory containing the URT "librle.a" file (typically the - "lib" subdirectory of the URT distribution). - -Support for 12-bit-deep pixel data: - -The JPEG standard allows either 8-bit or 12-bit data precision. (For color, -this means 8 or 12 bits per channel, of course.) If you need to work with -deeper than 8-bit data, you can compile the IJG code for 12-bit operation. -To do so: - 1. In jmorecfg.h, define BITS_IN_JSAMPLE as 12 rather than 8. - 2. In jconfig.h, undefine BMP_SUPPORTED, RLE_SUPPORTED, and TARGA_SUPPORTED, - because the code for those formats doesn't handle 12-bit data and won't - even compile. (The PPM code does work, as explained below. The GIF - code works too; it scales 8-bit GIF data to and from 12-bit depth - automatically.) - 3. Compile. Don't expect "make test" to pass, since the supplied test - files are for 8-bit data. - -Currently, 12-bit support does not work on 16-bit-int machines. - -Note that a 12-bit version will not read 8-bit JPEG files, nor vice versa; -so you'll want to keep around a regular 8-bit compilation as well. -(Run-time selection of data depth, to allow a single copy that does both, -is possible but would probably slow things down considerably; it's very low -on our to-do list.) - -The PPM reader (rdppm.c) can read 12-bit data from either text-format or -binary-format PPM and PGM files. Binary-format PPM/PGM files which have a -maxval greater than 255 are assumed to use 2 bytes per sample, LSB first -(little-endian order). As of early 1995, 2-byte binary format is not -officially supported by the PBMPLUS library, but it is expected that a -future release of PBMPLUS will support it. Note that the PPM reader will -read files of any maxval regardless of the BITS_IN_JSAMPLE setting; incoming -data is automatically rescaled to either maxval=255 or maxval=4095 as -appropriate for the cjpeg bit depth. - -The PPM writer (wrppm.c) will normally write 2-byte binary PPM or PGM -format, maxval 4095, when compiled with BITS_IN_JSAMPLE=12. Since this -format is not yet widely supported, you can disable it by compiling wrppm.c -with PPM_NORAWWORD defined; then the data is scaled down to 8 bits to make a -standard 1-byte/sample PPM or PGM file. (Yes, this means still another copy -of djpeg to keep around. But hopefully you won't need it for very long. -Poskanzer's supposed to get that new PBMPLUS release out Real Soon Now.) - -Of course, if you are working with 12-bit data, you probably have it stored -in some other, nonstandard format. In that case you'll probably want to -write your own I/O modules to read and write your format. - -Note that a 12-bit version of cjpeg always runs in "-optimize" mode, in -order to generate valid Huffman tables. This is necessary because our -default Huffman tables only cover 8-bit data. - -Removing code: - -If you need to make a smaller version of the JPEG software, some optional -functions can be removed at compile time. See the xxx_SUPPORTED #defines in -jconfig.h and jmorecfg.h. If at all possible, we recommend that you leave in -decoder support for all valid JPEG files, to ensure that you can read anyone's -output. Taking out support for image file formats that you don't use is the -most painless way to make the programs smaller. Another possibility is to -remove some of the DCT methods: in particular, the "IFAST" method may not be -enough faster than the others to be worth keeping on your machine. (If you -do remove ISLOW or IFAST, be sure to redefine JDCT_DEFAULT or JDCT_FASTEST -to a supported method, by adding a #define in jconfig.h.) - - -OPTIMIZATION -============ - -Unless you own a Cray, you'll probably be interested in making the JPEG -software go as fast as possible. This section covers some machine-dependent -optimizations you may want to try. We suggest that before trying any of -this, you first get the basic installation to pass the self-test step. -Repeat the self-test after any optimization to make sure that you haven't -broken anything. - -The integer DCT routines perform a lot of multiplications. These -multiplications must yield 32-bit results, but none of their input values -are more than 16 bits wide. On many machines, notably the 680x0 and 80x86 -CPUs, a 16x16=>32 bit multiply instruction is faster than a full 32x32=>32 -bit multiply. Unfortunately there is no portable way to specify such a -multiplication in C, but some compilers can generate one when you use the -right combination of casts. See the MULTIPLYxxx macro definitions in -jdct.h. If your compiler makes "int" be 32 bits and "short" be 16 bits, -defining SHORTxSHORT_32 is fairly likely to work. When experimenting with -alternate definitions, be sure to test not only whether the code still works -(use the self-test), but also whether it is actually faster --- on some -compilers, alternate definitions may compute the right answer, yet be slower -than the default. Timing cjpeg on a large PGM (grayscale) input file is the -best way to check this, as the DCT will be the largest fraction of the runtime -in that mode. (Note: some of the distributed compiler-specific jconfig files -already contain #define switches to select appropriate MULTIPLYxxx -definitions.) - -If your machine has sufficiently fast floating point hardware, you may find -that the float DCT method is faster than the integer DCT methods, even -after tweaking the integer multiply macros. In that case you may want to -make the float DCT be the default method. (The only objection to this is -that float DCT results may vary slightly across machines.) To do that, add -"#define JDCT_DEFAULT JDCT_FLOAT" to jconfig.h. Even if you don't change -the default, you should redefine JDCT_FASTEST, which is the method selected -by djpeg's -fast switch. Don't forget to update the documentation files -(usage.doc and/or cjpeg.1, djpeg.1) to agree with what you've done. - -If access to "short" arrays is slow on your machine, it may be a win to -define type JCOEF as int rather than short. This will cost a good deal of -memory though, particularly in some multi-pass modes, so don't do it unless -you have memory to burn and short is REALLY slow. - -If your compiler can compile function calls in-line, make sure the INLINE -macro in jmorecfg.h is defined as the keyword that marks a function -inline-able. Some compilers have a switch that tells the compiler to inline -any function it thinks is profitable (e.g., -finline-functions for gcc). -Enabling such a switch is likely to make the compiled code bigger but faster. - -In general, it's worth trying the maximum optimization level of your compiler, -and experimenting with any optional optimizations such as loop unrolling. -(Unfortunately, far too many compilers have optimizer bugs ... be prepared to -back off if the code fails self-test.) If you do any experimentation along -these lines, please report the optimal settings to jpeg-info@uunet.uu.net so -we can mention them in future releases. Be sure to specify your machine and -compiler version. - - -HINTS FOR SPECIFIC SYSTEMS -========================== - -We welcome reports on changes needed for systems not mentioned here. Submit -'em to jpeg-info@uunet.uu.net. Also, if configure or ckconfig.c is wrong -about how to configure the JPEG software for your system, please let us know. - - -Acorn RISC OS: - -(Thanks to Simon Middleton for these hints on compiling with Desktop C.) -After renaming the files according to Acorn conventions, take a copy of -makefile.ansi, change all occurrences of 'libjpeg.a' to 'libjpeg.o' and -change these definitions as indicated: - -CFLAGS= -throwback -IC: -Wn -LDLIBS=C:o.Stubs -SYSDEPMEM=jmemansi.o -LN=Link -AR=LibFile -c -o - -Also add a new line '.c.o:; $(cc) $< $(cflags) -c -o $@'. Remove the -lines '$(RM) libjpeg.o' and '$(AR2) libjpeg.o' and the 'jconfig.h' -dependency section. - -Copy jconfig.doc to jconfig.h. Edit jconfig.h to define TWO_FILE_COMMANDLINE -and CHAR_IS_UNSIGNED. - -Run the makefile using !AMU not !Make. If you want to use the 'clean' and -'test' makefile entries then you will have to fiddle with the syntax a bit -and rename the test files. - - -Amiga: - -SAS C 6.50 reportedly is too buggy to compile the IJG code properly. -A patch to update to 6.51 is available from SAS or AmiNet FTP sites. - -The supplied config files are set up to use jmemname.c as the memory -manager, with temporary files being created on the device named by -"JPEGTMP:". - - -Atari ST/STE/TT: - -Copy the project files makcjpeg.st, makdjpeg.st, maktjpeg.st, and makljpeg.st -to cjpeg.prj, djpeg.prj, jpegtran.prj, and libjpeg.prj respectively. The -project files should work as-is with Pure C. For Turbo C, change library -filenames "pc..." to "tc..." in each project file. Note that libjpeg.prj -selects jmemansi.c as the recommended memory manager. You'll probably want to -adjust the DEFAULT_MAX_MEM setting --- you want it to be a couple hundred K -less than your normal free memory. Put "#define DEFAULT_MAX_MEM nnnn" into -jconfig.h to do this. - -To use the 68881/68882 coprocessor for the floating point DCT, add the -compiler option "-8" to the project files and replace pcfltlib.lib with -pc881lib.lib in cjpeg.prj and djpeg.prj. Or if you don't have a -coprocessor, you may prefer to remove the float DCT code by undefining -DCT_FLOAT_SUPPORTED in jmorecfg.h (since without a coprocessor, the float -code will be too slow to be useful). In that case, you can delete -pcfltlib.lib from the project files. - -Note that you must make libjpeg.lib before making cjpeg.ttp, djpeg.ttp, -or jpegtran.ttp. You'll have to perform the self-test by hand. - -We haven't bothered to include project files for rdjpgcom and wrjpgcom. -Those source files should just be compiled by themselves; they don't -depend on the JPEG library. - -There is a bug in some older versions of the Turbo C library which causes the -space used by temporary files created with "tmpfile()" not to be freed after -an abnormal program exit. If you check your disk afterwards, you will find -cluster chains that are allocated but not used by a file. This should not -happen in cjpeg/djpeg/jpegtran, since we enable a signal catcher to explicitly -close temp files before exiting. But if you use the JPEG library with your -own code, be sure to supply a signal catcher, or else use a different -system-dependent memory manager. - - -Cray: - -Should you be so fortunate as to be running JPEG on a Cray YMP, there is a -compiler bug in old versions of Cray's Standard C (prior to 3.1). If you -still have an old compiler, you'll need to insert a line reading -"#pragma novector" just before the loop - for (i = 1; i <= (int) htbl->bits[l]; i++) - huffsize[p++] = (char) l; -in fix_huff_tbl (in V5beta1, line 204 of jchuff.c and line 176 of jdhuff.c). -[This bug may or may not still occur with the current IJG code, but it's -probably a dead issue anyway...] - - -HP-UX: - -If you have HP-UX 7.05 or later with the "software development" C compiler, -you should run the compiler in ANSI mode. If using the configure script, -say - ./configure CC='cc -Aa' -(or -Ae if you prefer). If configuring by hand, use makefile.ansi and add -"-Aa" to the CFLAGS line in the makefile. - -If you have a pre-7.05 system, or if you are using the non-ANSI C compiler -delivered with a minimum HP-UX system, then you must use makefile.unix -(and do NOT add -Aa); or just run configure without the CC option. - -On HP 9000 series 800 machines, the HP C compiler is buggy in revisions prior -to A.08.07. If you get complaints about "not a typedef name", you'll have to -use makefile.unix, or run configure without the CC option. - - -Macintosh, generic comments: - -The supplied user-interface files (cjpeg.c, djpeg.c, etc) are set up to -provide a Unix-style command line interface. You can use this interface on -the Mac by means of the ccommand() library routine provided by Metrowerks -CodeWarrior or Think C. This is only appropriate for testing the library, -however; to make a user-friendly equivalent of cjpeg/djpeg you'd really want -to develop a Mac-style user interface. There isn't a complete example -available at the moment, but there are some helpful starting points: -1. Sam Bushell's free "To JPEG" applet provides drag-and-drop conversion to -JPEG under System 7 and later. This only illustrates how to use the -compression half of the library, but it does a very nice job of that part. -The CodeWarrior source code is available from http://www.pobox.com/~jsam. -2. Jim Brunner prepared a Mac-style user interface for both compression and -decompression. Unfortunately, it hasn't been updated since IJG v4, and -the library's API has changed considerably since then. Still it may be of -some help, particularly as a guide to compiling the IJG code under Think C. -Jim's code is available from the Info-Mac archives, at sumex-aim.stanford.edu -or mirrors thereof; see file /info-mac/dev/src/jpeg-convert-c.hqx. - -jmemmac.c is the recommended memory manager back end for Macintosh. It uses -NewPtr/DisposePtr instead of malloc/free, and has a Mac-specific -implementation of jpeg_mem_available(). It also creates temporary files that -follow Mac conventions. (That part of the code relies on System-7-or-later OS -functions. See the comments in jmemmac.c if you need to run it on System 6.) -NOTE that USE_MAC_MEMMGR must be defined in jconfig.h to use jmemmac.c. - -You can also use jmemnobs.c, if you don't care about handling images larger -than available memory. If you use any memory manager back end other than -jmemmac.c, we recommend replacing "malloc" and "free" by "NewPtr" and -"DisposePtr", because Mac C libraries often have peculiar implementations of -malloc/free. (For instance, free() may not return the freed space to the -Mac Memory Manager. This is undesirable for the IJG code because jmemmgr.c -already clumps space requests.) - - -Macintosh, Metrowerks CodeWarrior: - -The Unix-command-line-style interface can be used by defining USE_CCOMMAND. -You'll also need to define TWO_FILE_COMMANDLINE to avoid stdin/stdout. -This means that when using the cjpeg/djpeg programs, you'll have to type the -input and output file names in the "Arguments" text-edit box, rather than -using the file radio buttons. (Perhaps USE_FDOPEN or USE_SETMODE would -eliminate the problem, but I haven't heard from anyone who's tried it.) - -On 680x0 Macs, Metrowerks defines type "double" as a 10-byte IEEE extended -float. jmemmgr.c won't like this: it wants sizeof(ALIGN_TYPE) to be a power -of 2. Add "#define ALIGN_TYPE long" to jconfig.h to eliminate the complaint. - -The supplied configuration file jconfig.mac can be used for your jconfig.h; -it includes all the recommended symbol definitions. If you have AppleScript -installed, you can run the supplied script makeproj.mac to create CodeWarrior -project files for the library and the testbed applications, then build the -library and applications. (Thanks to Dan Sears and Don Agro for this nifty -hack, which saves us from trying to maintain CodeWarrior project files as part -of the IJG distribution...) - - -Macintosh, Think C: - -The documentation in Jim Brunner's "JPEG Convert" source code (see above) -includes detailed build instructions for Think C; it's probably somewhat -out of date for the current release, but may be helpful. - -If you want to build the minimal command line version, proceed as follows. -You'll have to prepare project files for the programs; we don't include any -in the distribution since they are not text files. Use the file lists in -any of the supplied makefiles as a guide. Also add the ANSI and Unix C -libraries in a separate segment. You may need to divide the JPEG files into -more than one segment; we recommend dividing compression and decompression -modules. Define USE_CCOMMAND in jconfig.h so that the ccommand() routine is -called. You must also define TWO_FILE_COMMANDLINE because stdin/stdout -don't handle binary data correctly. - -On 680x0 Macs, Think C defines type "double" as a 12-byte IEEE extended float. -jmemmgr.c won't like this: it wants sizeof(ALIGN_TYPE) to be a power of 2. -Add "#define ALIGN_TYPE long" to jconfig.h to eliminate the complaint. - -jconfig.mac should work as a jconfig.h configuration file for Think C, -but the makeproj.mac AppleScript script is specific to CodeWarrior. Sorry. - - -MIPS R3000: - -MIPS's cc version 1.31 has a rather nasty optimization bug. Don't use -O -if you have that compiler version. (Use "cc -V" to check the version.) -Note that the R3000 chip is found in workstations from DEC and others. - - -MS-DOS, generic comments for 16-bit compilers: - -The IJG code is designed to work well in 80x86 "small" or "medium" memory -models (i.e., data pointers are 16 bits unless explicitly declared "far"; -code pointers can be either size). You may be able to use small model to -compile cjpeg or djpeg by itself, but you will probably have to use medium -model for any larger application. This won't make much difference in -performance. You *will* take a noticeable performance hit if you use a -large-data memory model, and you should avoid "huge" model if at all -possible. Be sure that NEED_FAR_POINTERS is defined in jconfig.h if you use -a small-data memory model; be sure it is NOT defined if you use a large-data -model. (The supplied makefiles and jconfig files for Borland and Microsoft C -compile in medium model and define NEED_FAR_POINTERS.) - -The DOS-specific memory manager, jmemdos.c, should be used if possible. -It needs some assembly-code routines which are in jmemdosa.asm; make sure -your makefile assembles that file and includes it in the library. If you -don't have a suitable assembler, you can get pre-assembled object files for -jmemdosa by FTP from ftp.uu.net:/graphics/jpeg/jdosaobj.zip. (DOS-oriented -distributions of the IJG source code often include these object files.) - -When using jmemdos.c, jconfig.h must define USE_MSDOS_MEMMGR and must set -MAX_ALLOC_CHUNK to less than 64K (65520L is a typical value). If your -C library's far-heap malloc() can't allocate blocks that large, reduce -MAX_ALLOC_CHUNK to whatever it can handle. - -If you can't use jmemdos.c for some reason --- for example, because you -don't have an assembler to assemble jmemdosa.asm --- you'll have to fall -back to jmemansi.c or jmemname.c. You'll probably still need to set -MAX_ALLOC_CHUNK in jconfig.h, because most DOS C libraries won't malloc() -more than 64K at a time. IMPORTANT: if you use jmemansi.c or jmemname.c, -you will have to compile in a large-data memory model in order to get the -right stdio library. Too bad. - -wrjpgcom needs to be compiled in large model, because it malloc()s a 64KB -work area to hold the comment text. If your C library's malloc can't -handle that, reduce MAX_COM_LENGTH as necessary in wrjpgcom.c. - -Most MS-DOS compilers treat stdin/stdout as text files, so you must use -two-file command line style. But if your compiler has either fdopen() or -setmode(), you can use one-file style if you like. To do this, define -USE_SETMODE or USE_FDOPEN so that stdin/stdout will be set to binary mode. -(USE_SETMODE seems to work with more DOS compilers than USE_FDOPEN.) You -should test that I/O through stdin/stdout produces the same results as I/O -to explicitly named files... the "make test" procedures in the supplied -makefiles do NOT use stdin/stdout. - - -MS-DOS, generic comments for 32-bit compilers: - -None of the above comments about memory models apply if you are using a -32-bit flat-memory-space environment, such as DJGPP or Watcom C. (And you -should use one if you have it, as performance will be much better than -8086-compatible code!) For flat-memory-space compilers, do NOT define -NEED_FAR_POINTERS, and do NOT use jmemdos.c. Use jmemnobs.c if the -environment supplies adequate virtual memory, otherwise use jmemansi.c or -jmemname.c. - -You'll still need to be careful about binary I/O through stdin/stdout. -See the last paragraph of the previous section. - - -MS-DOS, Borland C: - -Be sure to convert all the source files to DOS text format (CR/LF newlines). -Although Borland C will often work OK with unmodified Unix (LF newlines) -source files, sometimes it will give bogus compile errors. -"Illegal character '#'" is the most common such error. (This is true with -Borland C 3.1, but perhaps is fixed in newer releases.) - -If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE. -jconfig.bcc already includes #define USE_SETMODE to make this work. -(fdopen does not work correctly.) - - -MS-DOS, Microsoft C: - -makefile.mc6 works with Microsoft C, DOS Visual C++, etc. It should only -be used if you want to build a 16-bit (small or medium memory model) program. - -If you want one-file command line style, just undefine TWO_FILE_COMMANDLINE. -jconfig.mc6 already includes #define USE_SETMODE to make this work. -(fdopen does not work correctly.) - -Note that this makefile assumes that the working copy of itself is called -"makefile". If you want to call it something else, say "makefile.mak", -be sure to adjust the dependency line that reads "$(RFILE) : makefile". -Otherwise the make will fail because it doesn't know how to create "makefile". -Worse, some releases of Microsoft's make utilities give an incorrect error -message in this situation. - -Old versions of MS C fail with an "out of macro expansion space" error -because they can't cope with the macro TRACEMS8 (defined in jerror.h). -If this happens to you, the easiest solution is to change TRACEMS8 to -expand to nothing. You'll lose the ability to dump out JPEG coefficient -tables with djpeg -debug -debug, but at least you can compile. - -Original MS C 6.0 is very buggy; it compiles incorrect code unless you turn -off optimization entirely (remove -O from CFLAGS). 6.00A is better, but it -still generates bad code if you enable loop optimizations (-Ol or -Ox). - -MS C 8.0 crashes when compiling jquant1.c with optimization switch /Oo ... -which is on by default. To work around this bug, compile that one file -with /Oo-. - - -Microsoft Windows (all versions), generic comments: - -Some Windows system include files define typedef boolean as "unsigned char". -The IJG code also defines typedef boolean, but we make it "int" by default. -This doesn't affect the IJG programs because we don't import those Windows -include files. But if you use the JPEG library in your own program, and some -of your program's files import one definition of boolean while some import the -other, you can get all sorts of mysterious problems. A good preventive step -is to make the IJG library use "unsigned char" for boolean. To do that, -add something like this to your jconfig.h file: - /* Define "boolean" as unsigned char, not int, per Windows custom */ - #ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ - typedef unsigned char boolean; - #endif - #define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ -(This is already in jconfig.vc, by the way.) - -windef.h contains the declarations - #define far - #define FAR far -Since jmorecfg.h tries to define FAR as empty, you may get a compiler -warning if you include both jpeglib.h and windef.h (which windows.h -includes). To suppress the warning, you can put "#ifndef FAR"/"#endif" -around the line "#define FAR" in jmorecfg.h. - -When using the library in a Windows application, you will almost certainly -want to modify or replace the error handler module jerror.c, since our -default error handler does a couple of inappropriate things: - 1. it tries to write error and warning messages on stderr; - 2. in event of a fatal error, it exits by calling exit(). - -A simple stopgap solution for problem 1 is to replace the line - fprintf(stderr, "%s\n", buffer); -(in output_message in jerror.c) with - MessageBox(GetActiveWindow(),buffer,"JPEG Error",MB_OK|MB_ICONERROR); -It's highly recommended that you at least do that much, since otherwise -error messages will disappear into nowhere. (Beginning with IJG v6b, this -code is already present in jerror.c; just define USE_WINDOWS_MESSAGEBOX in -jconfig.h to enable it.) - -The proper solution for problem 2 is to return control to your calling -application after a library error. This can be done with the setjmp/longjmp -technique discussed in libjpeg.doc and illustrated in example.c. (NOTE: -some older Windows C compilers provide versions of setjmp/longjmp that -don't actually work under Windows. You may need to use the Windows system -functions Catch and Throw instead.) - -The recommended memory manager under Windows is jmemnobs.c; in other words, -let Windows do any virtual memory management needed. You should NOT use -jmemdos.c nor jmemdosa.asm under Windows. - -For Windows 3.1, we recommend compiling in medium or large memory model; -for newer Windows versions, use a 32-bit flat memory model. (See the MS-DOS -sections above for more info about memory models.) In the 16-bit memory -models only, you'll need to put - #define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */ -into jconfig.h to limit allocation chunks to 64Kb. (Without that, you'd -have to use huge memory model, which slows things down unnecessarily.) -jmemnobs.c works without modification in large or flat memory models, but to -use medium model, you need to modify its jpeg_get_large and jpeg_free_large -routines to allocate far memory. In any case, you might like to replace -its calls to malloc and free with direct calls on Windows memory allocation -functions. - -You may also want to modify jdatasrc.c and jdatadst.c to use Windows file -operations rather than fread/fwrite. This is only necessary if your C -compiler doesn't provide a competent implementation of C stdio functions. - -You might want to tweak the RGB_xxx macros in jmorecfg.h so that the library -will accept or deliver color pixels in BGR sample order, not RGB; BGR order -is usually more convenient under Windows. Note that this change will break -the sample applications cjpeg/djpeg, but the library itself works fine. - - -Many people want to convert the IJG library into a DLL. This is reasonably -straightforward, but watch out for the following: - - 1. Don't try to compile as a DLL in small or medium memory model; use -large model, or even better, 32-bit flat model. Many places in the IJG code -assume the address of a local variable is an ordinary (not FAR) pointer; -that isn't true in a medium-model DLL. - - 2. Microsoft C cannot pass file pointers between applications and DLLs. -(See Microsoft Knowledge Base, PSS ID Number Q50336.) So jdatasrc.c and -jdatadst.c don't work if you open a file in your application and then pass -the pointer to the DLL. One workaround is to make jdatasrc.c/jdatadst.c -part of your main application rather than part of the DLL. - - 3. You'll probably need to modify the macros GLOBAL() and EXTERN() to -attach suitable linkage keywords to the exported routine names. Similarly, -you'll want to modify METHODDEF() and JMETHOD() to ensure function pointers -are declared in a way that lets application routines be called back through -the function pointers. These macros are in jmorecfg.h. Typical definitions -for a 16-bit DLL are: - #define GLOBAL(type) type _far _pascal _loadds _export - #define EXTERN(type) extern type _far _pascal _loadds - #define METHODDEF(type) static type _far _pascal - #define JMETHOD(type,methodname,arglist) \ - type (_far _pascal *methodname) arglist -For a 32-bit DLL you may want something like - #define GLOBAL(type) __declspec(dllexport) type - #define EXTERN(type) extern __declspec(dllexport) type -Although not all the GLOBAL routines are actually intended to be called by -the application, the performance cost of making them all DLL entry points is -negligible. - -The unmodified IJG library presents a very C-specific application interface, -so the resulting DLL is only usable from C or C++ applications. There has -been some talk of writing wrapper code that would present a simpler interface -usable from other languages, such as Visual Basic. This is on our to-do list -but hasn't been very high priority --- any volunteers out there? - - -Microsoft Windows, Borland C: - -The provided jconfig.bcc should work OK in a 32-bit Windows environment, -but you'll need to tweak it in a 16-bit environment (you'd need to define -NEED_FAR_POINTERS and MAX_ALLOC_CHUNK). Beware that makefile.bcc will need -alteration if you want to use it for Windows --- in particular, you should -use jmemnobs.c not jmemdos.c under Windows. - -Borland C++ 4.5 fails with an internal compiler error when trying to compile -jdmerge.c in 32-bit mode. If enough people complain, perhaps Borland will fix -it. In the meantime, the simplest known workaround is to add a redundant -definition of the variable range_limit in h2v1_merged_upsample(), at the head -of the block that handles odd image width (about line 268 in v6 jdmerge.c): - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - register JSAMPLE * range_limit = cinfo->sample_range_limit; /* ADD THIS */ - cb = GETJSAMPLE(*inptr1); -Pretty bizarre, especially since the very similar routine h2v2_merged_upsample -doesn't trigger the bug. -Recent reports suggest that this bug does not occur with "bcc32a" (the -Pentium-optimized version of the compiler). - -Another report from a user of Borland C 4.5 was that incorrect code (leading -to a color shift in processed images) was produced if any of the following -optimization switch combinations were used: - -Ot -Og - -Ot -Op - -Ot -Om -So try backing off on optimization if you see such a problem. (Are there -several different releases all numbered "4.5"??) - - -Microsoft Windows, Microsoft Visual C++: - -jconfig.vc should work OK with any Microsoft compiler for a 32-bit memory -model. makefile.vc is intended for command-line use. (If you are using -the Developer Studio environment, you may prefer the DevStudio project -files; see below.) - -Some users feel that it's easier to call the library from C++ code if you -force VC++ to treat the library as C++ code, which you can do by renaming -all the *.c files to *.cpp (and adjusting the makefile to match). This -avoids the need to put extern "C" { ... } around #include "jpeglib.h" in -your C++ application. - - -Microsoft Windows, Microsoft Developer Studio: - -We include makefiles that should work as project files in DevStudio 4.2 or -later. There is a library makefile that builds the IJG library as a static -Win32 library, and an application makefile that builds the sample applications -as Win32 console applications. (Even if you only want the library, we -recommend building the applications so that you can run the self-test.) - -To use: -1. Copy jconfig.vc to jconfig.h, makelib.ds to jpeg.mak, and - makeapps.ds to apps.mak. (Note that the renaming is critical!) -2. Click on the .mak files to construct project workspaces. - (If you are using DevStudio more recent than 4.2, you'll probably - get a message saying that the makefiles are being updated.) -3. Build the library project, then the applications project. -4. Move the application .exe files from `app`\Release to an - appropriate location on your path. -5. To perform the self-test, execute the command line - NMAKE /f makefile.vc test - - -OS/2, Borland C++: - -Watch out for optimization bugs in older Borland compilers; you may need -to back off the optimization switch settings. See the comments in -makefile.bcc. - - -SGI: - -On some SGI systems, you may need to set "AR2= ar -ts" in the Makefile. -If you are using configure, you can do this by saying - ./configure RANLIB='ar -ts' -This change is not needed on all SGIs. Use it only if the make fails at the -stage of linking the completed programs. - -On the MIPS R4000 architecture (Indy, etc.), the compiler option "-mips2" -reportedly speeds up the float DCT method substantially, enough to make it -faster than the default int method (but still slower than the fast int -method). If you use -mips2, you may want to alter the default DCT method to -be float. To do this, put "#define JDCT_DEFAULT JDCT_FLOAT" in jconfig.h. - - -VMS: - -On an Alpha/VMS system with MMS, be sure to use the "/Marco=Alpha=1" -qualifier with MMS when building the JPEG package. - -VAX/VMS v5.5-1 may have problems with the test step of the build procedure -reporting differences when it compares the original and test images. If the -error points to the last block of the files, it is most likely bogus and may -be safely ignored. It seems to be because the files are Stream_LF and -Backup/Compare has difficulty with the (presumably) null padded files. -This problem was not observed on VAX/VMS v6.1 or AXP/VMS v6.1. diff --git a/project/jni/jpeg/jcapimin.c b/project/jni/jpeg/jcapimin.c deleted file mode 100644 index 54fb8c58c..000000000 --- a/project/jni/jpeg/jcapimin.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * jcapimin.c - * - * Copyright (C) 1994-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains application interface code for the compression half - * of the JPEG library. These are the "minimum" API routines that may be - * needed in either the normal full-compression case or the transcoding-only - * case. - * - * Most of the routines intended to be called directly by an application - * are in this file or in jcapistd.c. But also see jcparam.c for - * parameter-setup helper routines, jcomapi.c for routines shared by - * compression and decompression, and jctrans.c for the transcoding case. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * Initialization of a JPEG compression object. - * The error manager must already be set up (in case memory manager fails). - */ - -GLOBAL(void) -jpeg_CreateCompress (j_compress_ptr cinfo, int version, size_t structsize) -{ - int i; - - /* Guard against version mismatches between library and caller. */ - cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */ - if (version != JPEG_LIB_VERSION) - ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); - if (structsize != SIZEOF(struct jpeg_compress_struct)) - ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, - (int) SIZEOF(struct jpeg_compress_struct), (int) structsize); - - /* For debugging purposes, we zero the whole master structure. - * But the application has already set the err pointer, and may have set - * client_data, so we have to save and restore those fields. - * Note: if application hasn't set client_data, tools like Purify may - * complain here. - */ - { - struct jpeg_error_mgr * err = cinfo->err; - void * client_data = cinfo->client_data; /* ignore Purify complaint here */ - MEMZERO(cinfo, SIZEOF(struct jpeg_compress_struct)); - cinfo->err = err; - cinfo->client_data = client_data; - } - cinfo->is_decompressor = FALSE; - - /* Initialize a memory manager instance for this object */ - jinit_memory_mgr((j_common_ptr) cinfo); - - /* Zero out pointers to permanent structures. */ - cinfo->progress = NULL; - cinfo->dest = NULL; - - cinfo->comp_info = NULL; - - for (i = 0; i < NUM_QUANT_TBLS; i++) - cinfo->quant_tbl_ptrs[i] = NULL; - - for (i = 0; i < NUM_HUFF_TBLS; i++) { - cinfo->dc_huff_tbl_ptrs[i] = NULL; - cinfo->ac_huff_tbl_ptrs[i] = NULL; - } - - cinfo->script_space = NULL; - - cinfo->input_gamma = 1.0; /* in case application forgets */ - - /* OK, I'm ready */ - cinfo->global_state = CSTATE_START; -} - - -/* - * Destruction of a JPEG compression object - */ - -GLOBAL(void) -jpeg_destroy_compress (j_compress_ptr cinfo) -{ - jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ -} - - -/* - * Abort processing of a JPEG compression operation, - * but don't destroy the object itself. - */ - -GLOBAL(void) -jpeg_abort_compress (j_compress_ptr cinfo) -{ - jpeg_abort((j_common_ptr) cinfo); /* use common routine */ -} - - -/* - * Forcibly suppress or un-suppress all quantization and Huffman tables. - * Marks all currently defined tables as already written (if suppress) - * or not written (if !suppress). This will control whether they get emitted - * by a subsequent jpeg_start_compress call. - * - * This routine is exported for use by applications that want to produce - * abbreviated JPEG datastreams. It logically belongs in jcparam.c, but - * since it is called by jpeg_start_compress, we put it here --- otherwise - * jcparam.o would be linked whether the application used it or not. - */ - -GLOBAL(void) -jpeg_suppress_tables (j_compress_ptr cinfo, boolean suppress) -{ - int i; - JQUANT_TBL * qtbl; - JHUFF_TBL * htbl; - - for (i = 0; i < NUM_QUANT_TBLS; i++) { - if ((qtbl = cinfo->quant_tbl_ptrs[i]) != NULL) - qtbl->sent_table = suppress; - } - - for (i = 0; i < NUM_HUFF_TBLS; i++) { - if ((htbl = cinfo->dc_huff_tbl_ptrs[i]) != NULL) - htbl->sent_table = suppress; - if ((htbl = cinfo->ac_huff_tbl_ptrs[i]) != NULL) - htbl->sent_table = suppress; - } -} - - -/* - * Finish JPEG compression. - * - * If a multipass operating mode was selected, this may do a great deal of - * work including most of the actual output. - */ - -GLOBAL(void) -jpeg_finish_compress (j_compress_ptr cinfo) -{ - JDIMENSION iMCU_row; - - if (cinfo->global_state == CSTATE_SCANNING || - cinfo->global_state == CSTATE_RAW_OK) { - /* Terminate first pass */ - if (cinfo->next_scanline < cinfo->image_height) - ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); - (*cinfo->master->finish_pass) (cinfo); - } else if (cinfo->global_state != CSTATE_WRCOEFS) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - /* Perform any remaining passes */ - while (! cinfo->master->is_last_pass) { - (*cinfo->master->prepare_for_pass) (cinfo); - for (iMCU_row = 0; iMCU_row < cinfo->total_iMCU_rows; iMCU_row++) { - if (cinfo->progress != NULL) { - cinfo->progress->pass_counter = (long) iMCU_row; - cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows; - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - } - /* We bypass the main controller and invoke coef controller directly; - * all work is being done from the coefficient buffer. - */ - if (! (*cinfo->coef->compress_data) (cinfo, (JSAMPIMAGE) NULL)) - ERREXIT(cinfo, JERR_CANT_SUSPEND); - } - (*cinfo->master->finish_pass) (cinfo); - } - /* Write EOI, do final cleanup */ - (*cinfo->marker->write_file_trailer) (cinfo); - (*cinfo->dest->term_destination) (cinfo); - /* We can use jpeg_abort to release memory and reset global_state */ - jpeg_abort((j_common_ptr) cinfo); -} - - -/* - * Write a special marker. - * This is only recommended for writing COM or APPn markers. - * Must be called after jpeg_start_compress() and before - * first call to jpeg_write_scanlines() or jpeg_write_raw_data(). - */ - -GLOBAL(void) -jpeg_write_marker (j_compress_ptr cinfo, int marker, - const JOCTET *dataptr, unsigned int datalen) -{ - JMETHOD(void, write_marker_byte, (j_compress_ptr info, int val)); - - if (cinfo->next_scanline != 0 || - (cinfo->global_state != CSTATE_SCANNING && - cinfo->global_state != CSTATE_RAW_OK && - cinfo->global_state != CSTATE_WRCOEFS)) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); - write_marker_byte = cinfo->marker->write_marker_byte; /* copy for speed */ - while (datalen--) { - (*write_marker_byte) (cinfo, *dataptr); - dataptr++; - } -} - -/* Same, but piecemeal. */ - -GLOBAL(void) -jpeg_write_m_header (j_compress_ptr cinfo, int marker, unsigned int datalen) -{ - if (cinfo->next_scanline != 0 || - (cinfo->global_state != CSTATE_SCANNING && - cinfo->global_state != CSTATE_RAW_OK && - cinfo->global_state != CSTATE_WRCOEFS)) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - (*cinfo->marker->write_marker_header) (cinfo, marker, datalen); -} - -GLOBAL(void) -jpeg_write_m_byte (j_compress_ptr cinfo, int val) -{ - (*cinfo->marker->write_marker_byte) (cinfo, val); -} - - -/* - * Alternate compression function: just write an abbreviated table file. - * Before calling this, all parameters and a data destination must be set up. - * - * To produce a pair of files containing abbreviated tables and abbreviated - * image data, one would proceed as follows: - * - * initialize JPEG object - * set JPEG parameters - * set destination to table file - * jpeg_write_tables(cinfo); - * set destination to image file - * jpeg_start_compress(cinfo, FALSE); - * write data... - * jpeg_finish_compress(cinfo); - * - * jpeg_write_tables has the side effect of marking all tables written - * (same as jpeg_suppress_tables(..., TRUE)). Thus a subsequent start_compress - * will not re-emit the tables unless it is passed write_all_tables=TRUE. - */ - -GLOBAL(void) -jpeg_write_tables (j_compress_ptr cinfo) -{ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - /* (Re)initialize error mgr and destination modules */ - (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); - (*cinfo->dest->init_destination) (cinfo); - /* Initialize the marker writer ... bit of a crock to do it here. */ - jinit_marker_writer(cinfo); - /* Write them tables! */ - (*cinfo->marker->write_tables_only) (cinfo); - /* And clean up. */ - (*cinfo->dest->term_destination) (cinfo); - /* - * In library releases up through v6a, we called jpeg_abort() here to free - * any working memory allocated by the destination manager and marker - * writer. Some applications had a problem with that: they allocated space - * of their own from the library memory manager, and didn't want it to go - * away during write_tables. So now we do nothing. This will cause a - * memory leak if an app calls write_tables repeatedly without doing a full - * compression cycle or otherwise resetting the JPEG object. However, that - * seems less bad than unexpectedly freeing memory in the normal case. - * An app that prefers the old behavior can call jpeg_abort for itself after - * each call to jpeg_write_tables(). - */ -} diff --git a/project/jni/jpeg/jcapistd.c b/project/jni/jpeg/jcapistd.c deleted file mode 100644 index c0320b1b1..000000000 --- a/project/jni/jpeg/jcapistd.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * jcapistd.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains application interface code for the compression half - * of the JPEG library. These are the "standard" API routines that are - * used in the normal full-compression case. They are not used by a - * transcoding-only application. Note that if an application links in - * jpeg_start_compress, it will end up linking in the entire compressor. - * We thus must separate this file from jcapimin.c to avoid linking the - * whole compression library into a transcoder. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * Compression initialization. - * Before calling this, all parameters and a data destination must be set up. - * - * We require a write_all_tables parameter as a failsafe check when writing - * multiple datastreams from the same compression object. Since prior runs - * will have left all the tables marked sent_table=TRUE, a subsequent run - * would emit an abbreviated stream (no tables) by default. This may be what - * is wanted, but for safety's sake it should not be the default behavior: - * programmers should have to make a deliberate choice to emit abbreviated - * images. Therefore the documentation and examples should encourage people - * to pass write_all_tables=TRUE; then it will take active thought to do the - * wrong thing. - */ - -GLOBAL(void) -jpeg_start_compress (j_compress_ptr cinfo, boolean write_all_tables) -{ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - if (write_all_tables) - jpeg_suppress_tables(cinfo, FALSE); /* mark all tables to be written */ - - /* (Re)initialize error mgr and destination modules */ - (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); - (*cinfo->dest->init_destination) (cinfo); - /* Perform master selection of active modules */ - jinit_compress_master(cinfo); - /* Set up for the first pass */ - (*cinfo->master->prepare_for_pass) (cinfo); - /* Ready for application to drive first pass through jpeg_write_scanlines - * or jpeg_write_raw_data. - */ - cinfo->next_scanline = 0; - cinfo->global_state = (cinfo->raw_data_in ? CSTATE_RAW_OK : CSTATE_SCANNING); -} - - -/* - * Write some scanlines of data to the JPEG compressor. - * - * The return value will be the number of lines actually written. - * This should be less than the supplied num_lines only in case that - * the data destination module has requested suspension of the compressor, - * or if more than image_height scanlines are passed in. - * - * Note: we warn about excess calls to jpeg_write_scanlines() since - * this likely signals an application programmer error. However, - * excess scanlines passed in the last valid call are *silently* ignored, - * so that the application need not adjust num_lines for end-of-image - * when using a multiple-scanline buffer. - */ - -GLOBAL(JDIMENSION) -jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines, - JDIMENSION num_lines) -{ - JDIMENSION row_ctr, rows_left; - - if (cinfo->global_state != CSTATE_SCANNING) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - if (cinfo->next_scanline >= cinfo->image_height) - WARNMS(cinfo, JWRN_TOO_MUCH_DATA); - - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) { - cinfo->progress->pass_counter = (long) cinfo->next_scanline; - cinfo->progress->pass_limit = (long) cinfo->image_height; - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - } - - /* Give master control module another chance if this is first call to - * jpeg_write_scanlines. This lets output of the frame/scan headers be - * delayed so that application can write COM, etc, markers between - * jpeg_start_compress and jpeg_write_scanlines. - */ - if (cinfo->master->call_pass_startup) - (*cinfo->master->pass_startup) (cinfo); - - /* Ignore any extra scanlines at bottom of image. */ - rows_left = cinfo->image_height - cinfo->next_scanline; - if (num_lines > rows_left) - num_lines = rows_left; - - row_ctr = 0; - (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines); - cinfo->next_scanline += row_ctr; - return row_ctr; -} - - -/* - * Alternate entry point to write raw data. - * Processes exactly one iMCU row per call, unless suspended. - */ - -GLOBAL(JDIMENSION) -jpeg_write_raw_data (j_compress_ptr cinfo, JSAMPIMAGE data, - JDIMENSION num_lines) -{ - JDIMENSION lines_per_iMCU_row; - - if (cinfo->global_state != CSTATE_RAW_OK) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - if (cinfo->next_scanline >= cinfo->image_height) { - WARNMS(cinfo, JWRN_TOO_MUCH_DATA); - return 0; - } - - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) { - cinfo->progress->pass_counter = (long) cinfo->next_scanline; - cinfo->progress->pass_limit = (long) cinfo->image_height; - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - } - - /* Give master control module another chance if this is first call to - * jpeg_write_raw_data. This lets output of the frame/scan headers be - * delayed so that application can write COM, etc, markers between - * jpeg_start_compress and jpeg_write_raw_data. - */ - if (cinfo->master->call_pass_startup) - (*cinfo->master->pass_startup) (cinfo); - - /* Verify that at least one iMCU row has been passed. */ - lines_per_iMCU_row = cinfo->max_v_samp_factor * DCTSIZE; - if (num_lines < lines_per_iMCU_row) - ERREXIT(cinfo, JERR_BUFFER_SIZE); - - /* Directly compress the row. */ - if (! (*cinfo->coef->compress_data) (cinfo, data)) { - /* If compressor did not consume the whole row, suspend processing. */ - return 0; - } - - /* OK, we processed one iMCU row. */ - cinfo->next_scanline += lines_per_iMCU_row; - return lines_per_iMCU_row; -} diff --git a/project/jni/jpeg/jccoefct.c b/project/jni/jpeg/jccoefct.c deleted file mode 100644 index 1963ddb61..000000000 --- a/project/jni/jpeg/jccoefct.c +++ /dev/null @@ -1,449 +0,0 @@ -/* - * jccoefct.c - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the coefficient buffer controller for compression. - * This controller is the top level of the JPEG compressor proper. - * The coefficient buffer lies between forward-DCT and entropy encoding steps. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* We use a full-image coefficient buffer when doing Huffman optimization, - * and also for writing multiple-scan JPEG files. In all cases, the DCT - * step is run during the first pass, and subsequent passes need only read - * the buffered coefficients. - */ -#ifdef ENTROPY_OPT_SUPPORTED -#define FULL_COEF_BUFFER_SUPPORTED -#else -#ifdef C_MULTISCAN_FILES_SUPPORTED -#define FULL_COEF_BUFFER_SUPPORTED -#endif -#endif - - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_c_coef_controller pub; /* public fields */ - - JDIMENSION iMCU_row_num; /* iMCU row # within image */ - JDIMENSION mcu_ctr; /* counts MCUs processed in current row */ - int MCU_vert_offset; /* counts MCU rows within iMCU row */ - int MCU_rows_per_iMCU_row; /* number of such rows needed */ - - /* For single-pass compression, it's sufficient to buffer just one MCU - * (although this may prove a bit slow in practice). We allocate a - * workspace of C_MAX_BLOCKS_IN_MCU coefficient blocks, and reuse it for each - * MCU constructed and sent. (On 80x86, the workspace is FAR even though - * it's not really very big; this is to keep the module interfaces unchanged - * when a large coefficient buffer is necessary.) - * In multi-pass modes, this array points to the current MCU's blocks - * within the virtual arrays. - */ - JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU]; - - /* In multi-pass modes, we need a virtual block array for each component. */ - jvirt_barray_ptr whole_image[MAX_COMPONENTS]; -} my_coef_controller; - -typedef my_coef_controller * my_coef_ptr; - - -/* Forward declarations */ -METHODDEF(boolean) compress_data - JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf)); -#ifdef FULL_COEF_BUFFER_SUPPORTED -METHODDEF(boolean) compress_first_pass - JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf)); -METHODDEF(boolean) compress_output - JPP((j_compress_ptr cinfo, JSAMPIMAGE input_buf)); -#endif - - -LOCAL(void) -start_iMCU_row (j_compress_ptr cinfo) -/* Reset within-iMCU-row counters for a new row */ -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - - /* In an interleaved scan, an MCU row is the same as an iMCU row. - * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows. - * But at the bottom of the image, process only what's left. - */ - if (cinfo->comps_in_scan > 1) { - coef->MCU_rows_per_iMCU_row = 1; - } else { - if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1)) - coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor; - else - coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height; - } - - coef->mcu_ctr = 0; - coef->MCU_vert_offset = 0; -} - - -/* - * Initialize for a processing pass. - */ - -METHODDEF(void) -start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - - coef->iMCU_row_num = 0; - start_iMCU_row(cinfo); - - switch (pass_mode) { - case JBUF_PASS_THRU: - if (coef->whole_image[0] != NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - coef->pub.compress_data = compress_data; - break; -#ifdef FULL_COEF_BUFFER_SUPPORTED - case JBUF_SAVE_AND_PASS: - if (coef->whole_image[0] == NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - coef->pub.compress_data = compress_first_pass; - break; - case JBUF_CRANK_DEST: - if (coef->whole_image[0] == NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - coef->pub.compress_data = compress_output; - break; -#endif - default: - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - break; - } -} - - -/* - * Process some data in the single-pass case. - * We process the equivalent of one fully interleaved MCU row ("iMCU" row) - * per call, ie, v_samp_factor block rows for each component in the image. - * Returns TRUE if the iMCU row is completed, FALSE if suspended. - * - * NB: input_buf contains a plane for each component in image, - * which we index according to the component's SOF position. - */ - -METHODDEF(boolean) -compress_data (j_compress_ptr cinfo, JSAMPIMAGE input_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION MCU_col_num; /* index of current MCU within row */ - JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1; - JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; - int blkn, bi, ci, yindex, yoffset, blockcnt; - JDIMENSION ypos, xpos; - jpeg_component_info *compptr; - - /* Loop to write as much as one whole iMCU row */ - for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; - yoffset++) { - for (MCU_col_num = coef->mcu_ctr; MCU_col_num <= last_MCU_col; - MCU_col_num++) { - /* Determine where data comes from in input_buf and do the DCT thing. - * Each call on forward_DCT processes a horizontal row of DCT blocks - * as wide as an MCU; we rely on having allocated the MCU_buffer[] blocks - * sequentially. Dummy blocks at the right or bottom edge are filled in - * specially. The data in them does not matter for image reconstruction, - * so we fill them with values that will encode to the smallest amount of - * data, viz: all zeroes in the AC entries, DC entries equal to previous - * block's DC value. (Thanks to Thomas Kinsman for this idea.) - */ - blkn = 0; - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width - : compptr->last_col_width; - xpos = MCU_col_num * compptr->MCU_sample_width; - ypos = yoffset * DCTSIZE; /* ypos == (yoffset+yindex) * DCTSIZE */ - for (yindex = 0; yindex < compptr->MCU_height; yindex++) { - if (coef->iMCU_row_num < last_iMCU_row || - yoffset+yindex < compptr->last_row_height) { - (*cinfo->fdct->forward_DCT) (cinfo, compptr, - input_buf[compptr->component_index], - coef->MCU_buffer[blkn], - ypos, xpos, (JDIMENSION) blockcnt); - if (blockcnt < compptr->MCU_width) { - /* Create some dummy blocks at the right edge of the image. */ - jzero_far((void FAR *) coef->MCU_buffer[blkn + blockcnt], - (compptr->MCU_width - blockcnt) * SIZEOF(JBLOCK)); - for (bi = blockcnt; bi < compptr->MCU_width; bi++) { - coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn+bi-1][0][0]; - } - } - } else { - /* Create a row of dummy blocks at the bottom of the image. */ - jzero_far((void FAR *) coef->MCU_buffer[blkn], - compptr->MCU_width * SIZEOF(JBLOCK)); - for (bi = 0; bi < compptr->MCU_width; bi++) { - coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn-1][0][0]; - } - } - blkn += compptr->MCU_width; - ypos += DCTSIZE; - } - } - /* Try to write the MCU. In event of a suspension failure, we will - * re-DCT the MCU on restart (a bit inefficient, could be fixed...) - */ - if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) { - /* Suspension forced; update state counters and exit */ - coef->MCU_vert_offset = yoffset; - coef->mcu_ctr = MCU_col_num; - return FALSE; - } - } - /* Completed an MCU row, but perhaps not an iMCU row */ - coef->mcu_ctr = 0; - } - /* Completed the iMCU row, advance counters for next one */ - coef->iMCU_row_num++; - start_iMCU_row(cinfo); - return TRUE; -} - - -#ifdef FULL_COEF_BUFFER_SUPPORTED - -/* - * Process some data in the first pass of a multi-pass case. - * We process the equivalent of one fully interleaved MCU row ("iMCU" row) - * per call, ie, v_samp_factor block rows for each component in the image. - * This amount of data is read from the source buffer, DCT'd and quantized, - * and saved into the virtual arrays. We also generate suitable dummy blocks - * as needed at the right and lower edges. (The dummy blocks are constructed - * in the virtual arrays, which have been padded appropriately.) This makes - * it possible for subsequent passes not to worry about real vs. dummy blocks. - * - * We must also emit the data to the entropy encoder. This is conveniently - * done by calling compress_output() after we've loaded the current strip - * of the virtual arrays. - * - * NB: input_buf contains a plane for each component in image. All - * components are DCT'd and loaded into the virtual arrays in this pass. - * However, it may be that only a subset of the components are emitted to - * the entropy encoder during this first pass; be careful about looking - * at the scan-dependent variables (MCU dimensions, etc). - */ - -METHODDEF(boolean) -compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; - JDIMENSION blocks_across, MCUs_across, MCUindex; - int bi, ci, h_samp_factor, block_row, block_rows, ndummy; - JCOEF lastDC; - jpeg_component_info *compptr; - JBLOCKARRAY buffer; - JBLOCKROW thisblockrow, lastblockrow; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Align the virtual buffer for this component. */ - buffer = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[ci], - coef->iMCU_row_num * compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, TRUE); - /* Count non-dummy DCT block rows in this iMCU row. */ - if (coef->iMCU_row_num < last_iMCU_row) - block_rows = compptr->v_samp_factor; - else { - /* NB: can't use last_row_height here, since may not be set! */ - block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor); - if (block_rows == 0) block_rows = compptr->v_samp_factor; - } - blocks_across = compptr->width_in_blocks; - h_samp_factor = compptr->h_samp_factor; - /* Count number of dummy blocks to be added at the right margin. */ - ndummy = (int) (blocks_across % h_samp_factor); - if (ndummy > 0) - ndummy = h_samp_factor - ndummy; - /* Perform DCT for all non-dummy blocks in this iMCU row. Each call - * on forward_DCT processes a complete horizontal row of DCT blocks. - */ - for (block_row = 0; block_row < block_rows; block_row++) { - thisblockrow = buffer[block_row]; - (*cinfo->fdct->forward_DCT) (cinfo, compptr, - input_buf[ci], thisblockrow, - (JDIMENSION) (block_row * DCTSIZE), - (JDIMENSION) 0, blocks_across); - if (ndummy > 0) { - /* Create dummy blocks at the right edge of the image. */ - thisblockrow += blocks_across; /* => first dummy block */ - jzero_far((void FAR *) thisblockrow, ndummy * SIZEOF(JBLOCK)); - lastDC = thisblockrow[-1][0]; - for (bi = 0; bi < ndummy; bi++) { - thisblockrow[bi][0] = lastDC; - } - } - } - /* If at end of image, create dummy block rows as needed. - * The tricky part here is that within each MCU, we want the DC values - * of the dummy blocks to match the last real block's DC value. - * This squeezes a few more bytes out of the resulting file... - */ - if (coef->iMCU_row_num == last_iMCU_row) { - blocks_across += ndummy; /* include lower right corner */ - MCUs_across = blocks_across / h_samp_factor; - for (block_row = block_rows; block_row < compptr->v_samp_factor; - block_row++) { - thisblockrow = buffer[block_row]; - lastblockrow = buffer[block_row-1]; - jzero_far((void FAR *) thisblockrow, - (size_t) (blocks_across * SIZEOF(JBLOCK))); - for (MCUindex = 0; MCUindex < MCUs_across; MCUindex++) { - lastDC = lastblockrow[h_samp_factor-1][0]; - for (bi = 0; bi < h_samp_factor; bi++) { - thisblockrow[bi][0] = lastDC; - } - thisblockrow += h_samp_factor; /* advance to next MCU in row */ - lastblockrow += h_samp_factor; - } - } - } - } - /* NB: compress_output will increment iMCU_row_num if successful. - * A suspension return will result in redoing all the work above next time. - */ - - /* Emit data to the entropy encoder, sharing code with subsequent passes */ - return compress_output(cinfo, input_buf); -} - - -/* - * Process some data in subsequent passes of a multi-pass case. - * We process the equivalent of one fully interleaved MCU row ("iMCU" row) - * per call, ie, v_samp_factor block rows for each component in the scan. - * The data is obtained from the virtual arrays and fed to the entropy coder. - * Returns TRUE if the iMCU row is completed, FALSE if suspended. - * - * NB: input_buf is ignored; it is likely to be a NULL pointer. - */ - -METHODDEF(boolean) -compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION MCU_col_num; /* index of current MCU within row */ - int blkn, ci, xindex, yindex, yoffset; - JDIMENSION start_col; - JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN]; - JBLOCKROW buffer_ptr; - jpeg_component_info *compptr; - - /* Align the virtual buffers for the components used in this scan. - * NB: during first pass, this is safe only because the buffers will - * already be aligned properly, so jmemmgr.c won't need to do any I/O. - */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - buffer[ci] = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index], - coef->iMCU_row_num * compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, FALSE); - } - - /* Loop to process one whole iMCU row */ - for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; - yoffset++) { - for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row; - MCU_col_num++) { - /* Construct list of pointers to DCT blocks belonging to this MCU */ - blkn = 0; /* index of current DCT block within MCU */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - start_col = MCU_col_num * compptr->MCU_width; - for (yindex = 0; yindex < compptr->MCU_height; yindex++) { - buffer_ptr = buffer[ci][yindex+yoffset] + start_col; - for (xindex = 0; xindex < compptr->MCU_width; xindex++) { - coef->MCU_buffer[blkn++] = buffer_ptr++; - } - } - } - /* Try to write the MCU. */ - if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) { - /* Suspension forced; update state counters and exit */ - coef->MCU_vert_offset = yoffset; - coef->mcu_ctr = MCU_col_num; - return FALSE; - } - } - /* Completed an MCU row, but perhaps not an iMCU row */ - coef->mcu_ctr = 0; - } - /* Completed the iMCU row, advance counters for next one */ - coef->iMCU_row_num++; - start_iMCU_row(cinfo); - return TRUE; -} - -#endif /* FULL_COEF_BUFFER_SUPPORTED */ - - -/* - * Initialize coefficient buffer controller. - */ - -GLOBAL(void) -jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer) -{ - my_coef_ptr coef; - - coef = (my_coef_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_coef_controller)); - cinfo->coef = (struct jpeg_c_coef_controller *) coef; - coef->pub.start_pass = start_pass_coef; - - /* Create the coefficient buffer. */ - if (need_full_buffer) { -#ifdef FULL_COEF_BUFFER_SUPPORTED - /* Allocate a full-image virtual array for each component, */ - /* padded to a multiple of samp_factor DCT blocks in each direction. */ - int ci; - jpeg_component_info *compptr; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - coef->whole_image[ci] = (*cinfo->mem->request_virt_barray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - (JDIMENSION) jround_up((long) compptr->width_in_blocks, - (long) compptr->h_samp_factor), - (JDIMENSION) jround_up((long) compptr->height_in_blocks, - (long) compptr->v_samp_factor), - (JDIMENSION) compptr->v_samp_factor); - } -#else - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); -#endif - } else { - /* We only need a single-MCU buffer. */ - JBLOCKROW buffer; - int i; - - buffer = (JBLOCKROW) - (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, - C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); - for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) { - coef->MCU_buffer[i] = buffer + i; - } - coef->whole_image[0] = NULL; /* flag for no virtual arrays */ - } -} diff --git a/project/jni/jpeg/jccolor.c b/project/jni/jpeg/jccolor.c deleted file mode 100644 index 57a76c36b..000000000 --- a/project/jni/jpeg/jccolor.c +++ /dev/null @@ -1,527 +0,0 @@ -/* - * jccolor.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains input colorspace conversion routines. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - -// this enables unrolling null_convert's loop, and reading/write ints for speed -#define ENABLE_ANDROID_NULL_CONVERT - -/* Private subobject */ - -typedef struct { - struct jpeg_color_converter pub; /* public fields */ - - /* Private state for RGB->YCC conversion */ - INT32 * rgb_ycc_tab; /* => table for RGB to YCbCr conversion */ -} my_color_converter; - -typedef my_color_converter * my_cconvert_ptr; - - -/**************** RGB -> YCbCr conversion: most common case **************/ - -/* - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * Y = 0.29900 * R + 0.58700 * G + 0.11400 * B - * Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE - * Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE - * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) - * Note: older versions of the IJG code used a zero offset of MAXJSAMPLE/2, - * rather than CENTERJSAMPLE, for Cb and Cr. This gave equal positive and - * negative swings for Cb/Cr, but meant that grayscale values (Cb=Cr=0) - * were not represented exactly. Now we sacrifice exact representation of - * maximum red and maximum blue in order to get exact grayscales. - * - * To avoid floating-point arithmetic, we represent the fractional constants - * as integers scaled up by 2^16 (about 4 digits precision); we have to divide - * the products by 2^16, with appropriate rounding, to get the correct answer. - * - * For even more speed, we avoid doing any multiplications in the inner loop - * by precalculating the constants times R,G,B for all possible values. - * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); - * for 12-bit samples it is still acceptable. It's not very reasonable for - * 16-bit samples, but if you want lossless storage you shouldn't be changing - * colorspace anyway. - * The CENTERJSAMPLE offsets and the rounding fudge-factor of 0.5 are included - * in the tables to save adding them separately in the inner loop. - */ - -#define SCALEBITS 16 /* speediest right-shift on some machines */ -#define CBCR_OFFSET ((INT32) CENTERJSAMPLE << SCALEBITS) -#define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) -#define FIX(x) ((INT32) ((x) * (1L< Y section */ -#define G_Y_OFF (1*(MAXJSAMPLE+1)) /* offset to G => Y section */ -#define B_Y_OFF (2*(MAXJSAMPLE+1)) /* etc. */ -#define R_CB_OFF (3*(MAXJSAMPLE+1)) -#define G_CB_OFF (4*(MAXJSAMPLE+1)) -#define B_CB_OFF (5*(MAXJSAMPLE+1)) -#define R_CR_OFF B_CB_OFF /* B=>Cb, R=>Cr are the same */ -#define G_CR_OFF (6*(MAXJSAMPLE+1)) -#define B_CR_OFF (7*(MAXJSAMPLE+1)) -#define TABLE_SIZE (8*(MAXJSAMPLE+1)) - - -/* - * Initialize for RGB->YCC colorspace conversion. - */ - -METHODDEF(void) -rgb_ycc_start (j_compress_ptr cinfo) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - INT32 * rgb_ycc_tab; - INT32 i; - - /* Allocate and fill in the conversion tables. */ - cconvert->rgb_ycc_tab = rgb_ycc_tab = (INT32 *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (TABLE_SIZE * SIZEOF(INT32))); - - for (i = 0; i <= MAXJSAMPLE; i++) { - rgb_ycc_tab[i+R_Y_OFF] = FIX(0.29900) * i; - rgb_ycc_tab[i+G_Y_OFF] = FIX(0.58700) * i; - rgb_ycc_tab[i+B_Y_OFF] = FIX(0.11400) * i + ONE_HALF; - rgb_ycc_tab[i+R_CB_OFF] = (-FIX(0.16874)) * i; - rgb_ycc_tab[i+G_CB_OFF] = (-FIX(0.33126)) * i; - /* We use a rounding fudge-factor of 0.5-epsilon for Cb and Cr. - * This ensures that the maximum output will round to MAXJSAMPLE - * not MAXJSAMPLE+1, and thus that we don't have to range-limit. - */ - rgb_ycc_tab[i+B_CB_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1; -/* B=>Cb and R=>Cr tables are the same - rgb_ycc_tab[i+R_CR_OFF] = FIX(0.50000) * i + CBCR_OFFSET + ONE_HALF-1; -*/ - rgb_ycc_tab[i+G_CR_OFF] = (-FIX(0.41869)) * i; - rgb_ycc_tab[i+B_CR_OFF] = (-FIX(0.08131)) * i; - } -} - - -/* - * Convert some rows of samples to the JPEG colorspace. - * - * Note that we change from the application's interleaved-pixel format - * to our internal noninterleaved, one-plane-per-component format. - * The input buffer is therefore three times as wide as the output buffer. - * - * A starting row offset is provided only for the output buffer. The caller - * can easily adjust the passed input_buf value to accommodate any row - * offset required on that side. - */ - -METHODDEF(void) -rgb_ycc_convert (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPIMAGE output_buf, - JDIMENSION output_row, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int r, g, b; - register INT32 * ctab = cconvert->rgb_ycc_tab; - register JSAMPROW inptr; - register JSAMPROW outptr0, outptr1, outptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->image_width; - - while (--num_rows >= 0) { - inptr = *input_buf++; - outptr0 = output_buf[0][output_row]; - outptr1 = output_buf[1][output_row]; - outptr2 = output_buf[2][output_row]; - output_row++; - for (col = 0; col < num_cols; col++) { - r = GETJSAMPLE(inptr[RGB_RED]); - g = GETJSAMPLE(inptr[RGB_GREEN]); - b = GETJSAMPLE(inptr[RGB_BLUE]); - inptr += RGB_PIXELSIZE; - /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations - * must be too; we do not need an explicit range-limiting operation. - * Hence the value being shifted is never negative, and we don't - * need the general RIGHT_SHIFT macro. - */ - /* Y */ - outptr0[col] = (JSAMPLE) - ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) - >> SCALEBITS); - /* Cb */ - outptr1[col] = (JSAMPLE) - ((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF]) - >> SCALEBITS); - /* Cr */ - outptr2[col] = (JSAMPLE) - ((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF]) - >> SCALEBITS); - } - } -} - - -/**************** Cases other than RGB -> YCbCr **************/ - - -/* - * Convert some rows of samples to the JPEG colorspace. - * This version handles RGB->grayscale conversion, which is the same - * as the RGB->Y portion of RGB->YCbCr. - * We assume rgb_ycc_start has been called (we only use the Y tables). - */ - -METHODDEF(void) -rgb_gray_convert (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPIMAGE output_buf, - JDIMENSION output_row, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int r, g, b; - register INT32 * ctab = cconvert->rgb_ycc_tab; - register JSAMPROW inptr; - register JSAMPROW outptr; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->image_width; - - while (--num_rows >= 0) { - inptr = *input_buf++; - outptr = output_buf[0][output_row]; - output_row++; - for (col = 0; col < num_cols; col++) { - r = GETJSAMPLE(inptr[RGB_RED]); - g = GETJSAMPLE(inptr[RGB_GREEN]); - b = GETJSAMPLE(inptr[RGB_BLUE]); - inptr += RGB_PIXELSIZE; - /* Y */ - outptr[col] = (JSAMPLE) - ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) - >> SCALEBITS); - } - } -} - - -/* - * Convert some rows of samples to the JPEG colorspace. - * This version handles Adobe-style CMYK->YCCK conversion, - * where we convert R=1-C, G=1-M, and B=1-Y to YCbCr using the same - * conversion as above, while passing K (black) unchanged. - * We assume rgb_ycc_start has been called. - */ - -METHODDEF(void) -cmyk_ycck_convert (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPIMAGE output_buf, - JDIMENSION output_row, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int r, g, b; - register INT32 * ctab = cconvert->rgb_ycc_tab; - register JSAMPROW inptr; - register JSAMPROW outptr0, outptr1, outptr2, outptr3; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->image_width; - - while (--num_rows >= 0) { - inptr = *input_buf++; - outptr0 = output_buf[0][output_row]; - outptr1 = output_buf[1][output_row]; - outptr2 = output_buf[2][output_row]; - outptr3 = output_buf[3][output_row]; - output_row++; - for (col = 0; col < num_cols; col++) { - r = MAXJSAMPLE - GETJSAMPLE(inptr[0]); - g = MAXJSAMPLE - GETJSAMPLE(inptr[1]); - b = MAXJSAMPLE - GETJSAMPLE(inptr[2]); - /* K passes through as-is */ - outptr3[col] = inptr[3]; /* don't need GETJSAMPLE here */ - inptr += 4; - /* If the inputs are 0..MAXJSAMPLE, the outputs of these equations - * must be too; we do not need an explicit range-limiting operation. - * Hence the value being shifted is never negative, and we don't - * need the general RIGHT_SHIFT macro. - */ - /* Y */ - outptr0[col] = (JSAMPLE) - ((ctab[r+R_Y_OFF] + ctab[g+G_Y_OFF] + ctab[b+B_Y_OFF]) - >> SCALEBITS); - /* Cb */ - outptr1[col] = (JSAMPLE) - ((ctab[r+R_CB_OFF] + ctab[g+G_CB_OFF] + ctab[b+B_CB_OFF]) - >> SCALEBITS); - /* Cr */ - outptr2[col] = (JSAMPLE) - ((ctab[r+R_CR_OFF] + ctab[g+G_CR_OFF] + ctab[b+B_CR_OFF]) - >> SCALEBITS); - } - } -} - - -/* - * Convert some rows of samples to the JPEG colorspace. - * This version handles grayscale output with no conversion. - * The source can be either plain grayscale or YCbCr (since Y == gray). - */ - -METHODDEF(void) -grayscale_convert (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPIMAGE output_buf, - JDIMENSION output_row, int num_rows) -{ - register JSAMPROW inptr; - register JSAMPROW outptr; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->image_width; - int instride = cinfo->input_components; - - while (--num_rows >= 0) { - inptr = *input_buf++; - outptr = output_buf[0][output_row]; - output_row++; - for (col = 0; col < num_cols; col++) { - outptr[col] = inptr[0]; /* don't need GETJSAMPLE() here */ - inptr += instride; - } - } -} - -#ifdef ENABLE_ANDROID_NULL_CONVERT - -typedef unsigned long UINT32; - -#define B0(n) ((n) & 0xFF) -#define B1(n) (((n) >> 8) & 0xFF) -#define B2(n) (((n) >> 16) & 0xFF) -#define B3(n) ((n) >> 24) - -#define PACK(a, b, c, d) ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24)) - -static int ptr_is_quad(const void* p) -{ - return (((const char*)p - (const char*)0) & 3) == 0; -} - -static void copyquads(const UINT32 in[], UINT32 out0[], UINT32 out1[], UINT32 out2[], int col4) -{ - do { - UINT32 src0 = *in++; - UINT32 src1 = *in++; - UINT32 src2 = *in++; - // LEndian - *out0++ = PACK(B0(src0), B3(src0), B2(src1), B1(src2)); - *out1++ = PACK(B1(src0), B0(src1), B3(src1), B2(src2)); - *out2++ = PACK(B2(src0), B1(src1), B0(src2), B3(src2)); - } while (--col4 != 0); -} - -#endif - -/* - * Convert some rows of samples to the JPEG colorspace. - * This version handles multi-component colorspaces without conversion. - * We assume input_components == num_components. - */ - -METHODDEF(void) -null_convert (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPIMAGE output_buf, - JDIMENSION output_row, int num_rows) -{ - register JSAMPROW inptr; - register JSAMPROW outptr; - register JDIMENSION col; - register int ci; - int nc = cinfo->num_components; - JDIMENSION num_cols = cinfo->image_width; - -#ifdef ENABLE_ANDROID_NULL_CONVERT - if (1 == num_rows && 3 == nc && num_cols > 0) { - JSAMPROW inptr = *input_buf; - JSAMPROW outptr0 = output_buf[0][output_row]; - JSAMPROW outptr1 = output_buf[1][output_row]; - JSAMPROW outptr2 = output_buf[2][output_row]; - - int col = num_cols; - int col4 = col >> 2; - if (col4 > 0 && ptr_is_quad(inptr) && ptr_is_quad(outptr0) && - ptr_is_quad(outptr1) && ptr_is_quad(outptr2)) { - - const UINT32* in = (const UINT32*)inptr; - UINT32* out0 = (UINT32*)outptr0; - UINT32* out1 = (UINT32*)outptr1; - UINT32* out2 = (UINT32*)outptr2; - copyquads(in, out0, out1, out2, col4); - col &= 3; - if (0 == col) - return; - col4 <<= 2; - inptr += col4 * 3; /* we read this 3 times per in copyquads */ - outptr0 += col4; - outptr1 += col4; - outptr2 += col4; - /* fall through to while-loop */ - } - do { - *outptr0++ = *inptr++; - *outptr1++ = *inptr++; - *outptr2++ = *inptr++; - } while (--col != 0); - return; - } -SLOW: -#endif - while (--num_rows >= 0) { - /* It seems fastest to make a separate pass for each component. */ - for (ci = 0; ci < nc; ci++) { - inptr = *input_buf; - outptr = output_buf[ci][output_row]; - for (col = 0; col < num_cols; col++) { - outptr[col] = inptr[ci]; /* don't need GETJSAMPLE() here */ - inptr += nc; - } - } - input_buf++; - output_row++; - } -} - - -/* - * Empty method for start_pass. - */ - -METHODDEF(void) -null_method (j_compress_ptr cinfo) -{ - /* no work needed */ -} - - -/* - * Module initialization routine for input colorspace conversion. - */ - -GLOBAL(void) -jinit_color_converter (j_compress_ptr cinfo) -{ - my_cconvert_ptr cconvert; - - cconvert = (my_cconvert_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_color_converter)); - cinfo->cconvert = (struct jpeg_color_converter *) cconvert; - /* set start_pass to null method until we find out differently */ - cconvert->pub.start_pass = null_method; - - /* Make sure input_components agrees with in_color_space */ - switch (cinfo->in_color_space) { - case JCS_GRAYSCALE: - if (cinfo->input_components != 1) - ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); - break; - - case JCS_RGB: -#if RGB_PIXELSIZE != 3 - if (cinfo->input_components != RGB_PIXELSIZE) - ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); - break; -#endif /* else share code with YCbCr */ - - case JCS_YCbCr: - if (cinfo->input_components != 3) - ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); - break; - - case JCS_CMYK: - case JCS_YCCK: - if (cinfo->input_components != 4) - ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); - break; - - default: /* JCS_UNKNOWN can be anything */ - if (cinfo->input_components < 1) - ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); - break; - } - - /* Check num_components, set conversion method based on requested space */ - switch (cinfo->jpeg_color_space) { - case JCS_GRAYSCALE: - if (cinfo->num_components != 1) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - if (cinfo->in_color_space == JCS_GRAYSCALE) - cconvert->pub.color_convert = grayscale_convert; - else if (cinfo->in_color_space == JCS_RGB) { - cconvert->pub.start_pass = rgb_ycc_start; - cconvert->pub.color_convert = rgb_gray_convert; - } else if (cinfo->in_color_space == JCS_YCbCr) - cconvert->pub.color_convert = grayscale_convert; - else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - case JCS_RGB: - if (cinfo->num_components != 3) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - if (cinfo->in_color_space == JCS_RGB && RGB_PIXELSIZE == 3) - cconvert->pub.color_convert = null_convert; - else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - case JCS_YCbCr: - if (cinfo->num_components != 3) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - if (cinfo->in_color_space == JCS_RGB) { - cconvert->pub.start_pass = rgb_ycc_start; - cconvert->pub.color_convert = rgb_ycc_convert; - } else if (cinfo->in_color_space == JCS_YCbCr) - cconvert->pub.color_convert = null_convert; - else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - case JCS_CMYK: - if (cinfo->num_components != 4) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - if (cinfo->in_color_space == JCS_CMYK) - cconvert->pub.color_convert = null_convert; - else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - case JCS_YCCK: - if (cinfo->num_components != 4) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - if (cinfo->in_color_space == JCS_CMYK) { - cconvert->pub.start_pass = rgb_ycc_start; - cconvert->pub.color_convert = cmyk_ycck_convert; - } else if (cinfo->in_color_space == JCS_YCCK) - cconvert->pub.color_convert = null_convert; - else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - default: /* allow null conversion of JCS_UNKNOWN */ - if (cinfo->jpeg_color_space != cinfo->in_color_space || - cinfo->num_components != cinfo->input_components) - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - cconvert->pub.color_convert = null_convert; - break; - } -} diff --git a/project/jni/jpeg/jcdctmgr.c b/project/jni/jpeg/jcdctmgr.c deleted file mode 100644 index 61fa79b9e..000000000 --- a/project/jni/jpeg/jcdctmgr.c +++ /dev/null @@ -1,387 +0,0 @@ -/* - * jcdctmgr.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the forward-DCT management logic. - * This code selects a particular DCT implementation to be used, - * and it performs related housekeeping chores including coefficient - * quantization. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - - -/* Private subobject for this module */ - -typedef struct { - struct jpeg_forward_dct pub; /* public fields */ - - /* Pointer to the DCT routine actually in use */ - forward_DCT_method_ptr do_dct; - - /* The actual post-DCT divisors --- not identical to the quant table - * entries, because of scaling (especially for an unnormalized DCT). - * Each table is given in normal array order. - */ - DCTELEM * divisors[NUM_QUANT_TBLS]; - -#ifdef DCT_FLOAT_SUPPORTED - /* Same as above for the floating-point case. */ - float_DCT_method_ptr do_float_dct; - FAST_FLOAT * float_divisors[NUM_QUANT_TBLS]; -#endif -} my_fdct_controller; - -typedef my_fdct_controller * my_fdct_ptr; - - -/* - * Initialize for a processing pass. - * Verify that all referenced Q-tables are present, and set up - * the divisor table for each one. - * In the current implementation, DCT of all components is done during - * the first pass, even if only some components will be output in the - * first scan. Hence all components should be examined here. - */ - -METHODDEF(void) -start_pass_fdctmgr (j_compress_ptr cinfo) -{ - my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct; - int ci, qtblno, i; - jpeg_component_info *compptr; - JQUANT_TBL * qtbl; - DCTELEM * dtbl; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - qtblno = compptr->quant_tbl_no; - /* Make sure specified quantization table is present */ - if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS || - cinfo->quant_tbl_ptrs[qtblno] == NULL) - ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno); - qtbl = cinfo->quant_tbl_ptrs[qtblno]; - /* Compute divisors for this quant table */ - /* We may do this more than once for same table, but it's not a big deal */ - switch (cinfo->dct_method) { -#ifdef DCT_ISLOW_SUPPORTED - case JDCT_ISLOW: - /* For LL&M IDCT method, divisors are equal to raw quantization - * coefficients multiplied by 8 (to counteract scaling). - */ - if (fdct->divisors[qtblno] == NULL) { - fdct->divisors[qtblno] = (DCTELEM *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - DCTSIZE2 * SIZEOF(DCTELEM)); - } - dtbl = fdct->divisors[qtblno]; - for (i = 0; i < DCTSIZE2; i++) { - dtbl[i] = ((DCTELEM) qtbl->quantval[i]) << 3; - } - break; -#endif -#ifdef DCT_IFAST_SUPPORTED - case JDCT_IFAST: - { - /* For AA&N IDCT method, divisors are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - * We apply a further scale factor of 8. - */ -#define CONST_BITS 14 - static const INT16 aanscales[DCTSIZE2] = { - /* precomputed values scaled up by 14 bits */ - 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, - 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, - 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, - 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, - 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, - 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, - 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446, - 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247 - }; - SHIFT_TEMPS - - if (fdct->divisors[qtblno] == NULL) { - fdct->divisors[qtblno] = (DCTELEM *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - DCTSIZE2 * SIZEOF(DCTELEM)); - } - dtbl = fdct->divisors[qtblno]; - for (i = 0; i < DCTSIZE2; i++) { - dtbl[i] = (DCTELEM) - DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i], - (INT32) aanscales[i]), - CONST_BITS-3); - } - } - break; -#endif -#ifdef DCT_FLOAT_SUPPORTED - case JDCT_FLOAT: - { - /* For float AA&N IDCT method, divisors are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - * We apply a further scale factor of 8. - * What's actually stored is 1/divisor so that the inner loop can - * use a multiplication rather than a division. - */ - FAST_FLOAT * fdtbl; - int row, col; - static const double aanscalefactor[DCTSIZE] = { - 1.0, 1.387039845, 1.306562965, 1.175875602, - 1.0, 0.785694958, 0.541196100, 0.275899379 - }; - - if (fdct->float_divisors[qtblno] == NULL) { - fdct->float_divisors[qtblno] = (FAST_FLOAT *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - DCTSIZE2 * SIZEOF(FAST_FLOAT)); - } - fdtbl = fdct->float_divisors[qtblno]; - i = 0; - for (row = 0; row < DCTSIZE; row++) { - for (col = 0; col < DCTSIZE; col++) { - fdtbl[i] = (FAST_FLOAT) - (1.0 / (((double) qtbl->quantval[i] * - aanscalefactor[row] * aanscalefactor[col] * 8.0))); - i++; - } - } - } - break; -#endif - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } - } -} - - -/* - * Perform forward DCT on one or more blocks of a component. - * - * The input samples are taken from the sample_data[] array starting at - * position start_row/start_col, and moving to the right for any additional - * blocks. The quantized coefficients are returned in coef_blocks[]. - */ - -METHODDEF(void) -forward_DCT (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY sample_data, JBLOCKROW coef_blocks, - JDIMENSION start_row, JDIMENSION start_col, - JDIMENSION num_blocks) -/* This version is used for integer DCT implementations. */ -{ - /* This routine is heavily used, so it's worth coding it tightly. */ - my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct; - forward_DCT_method_ptr do_dct = fdct->do_dct; - DCTELEM * divisors = fdct->divisors[compptr->quant_tbl_no]; - DCTELEM workspace[DCTSIZE2]; /* work area for FDCT subroutine */ - JDIMENSION bi; - - sample_data += start_row; /* fold in the vertical offset once */ - - for (bi = 0; bi < num_blocks; bi++, start_col += DCTSIZE) { - /* Load data into workspace, applying unsigned->signed conversion */ - { register DCTELEM *workspaceptr; - register JSAMPROW elemptr; - register int elemr; - - workspaceptr = workspace; - for (elemr = 0; elemr < DCTSIZE; elemr++) { - elemptr = sample_data[elemr] + start_col; -#if DCTSIZE == 8 /* unroll the inner loop */ - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; -#else - { register int elemc; - for (elemc = DCTSIZE; elemc > 0; elemc--) { - *workspaceptr++ = GETJSAMPLE(*elemptr++) - CENTERJSAMPLE; - } - } -#endif - } - } - - /* Perform the DCT */ - (*do_dct) (workspace); - - /* Quantize/descale the coefficients, and store into coef_blocks[] */ - { register DCTELEM temp, qval; - register int i; - register JCOEFPTR output_ptr = coef_blocks[bi]; - - for (i = 0; i < DCTSIZE2; i++) { - qval = divisors[i]; - temp = workspace[i]; - /* Divide the coefficient value by qval, ensuring proper rounding. - * Since C does not specify the direction of rounding for negative - * quotients, we have to force the dividend positive for portability. - * - * In most files, at least half of the output values will be zero - * (at default quantization settings, more like three-quarters...) - * so we should ensure that this case is fast. On many machines, - * a comparison is enough cheaper than a divide to make a special test - * a win. Since both inputs will be nonnegative, we need only test - * for a < b to discover whether a/b is 0. - * If your machine's division is fast enough, define FAST_DIVIDE. - */ -#ifdef FAST_DIVIDE -#define DIVIDE_BY(a,b) a /= b -#else -#define DIVIDE_BY(a,b) if (a >= b) a /= b; else a = 0 -#endif - if (temp < 0) { - temp = -temp; - temp += qval>>1; /* for rounding */ - DIVIDE_BY(temp, qval); - temp = -temp; - } else { - temp += qval>>1; /* for rounding */ - DIVIDE_BY(temp, qval); - } - output_ptr[i] = (JCOEF) temp; - } - } - } -} - - -#ifdef DCT_FLOAT_SUPPORTED - -METHODDEF(void) -forward_DCT_float (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY sample_data, JBLOCKROW coef_blocks, - JDIMENSION start_row, JDIMENSION start_col, - JDIMENSION num_blocks) -/* This version is used for floating-point DCT implementations. */ -{ - /* This routine is heavily used, so it's worth coding it tightly. */ - my_fdct_ptr fdct = (my_fdct_ptr) cinfo->fdct; - float_DCT_method_ptr do_dct = fdct->do_float_dct; - FAST_FLOAT * divisors = fdct->float_divisors[compptr->quant_tbl_no]; - FAST_FLOAT workspace[DCTSIZE2]; /* work area for FDCT subroutine */ - JDIMENSION bi; - - sample_data += start_row; /* fold in the vertical offset once */ - - for (bi = 0; bi < num_blocks; bi++, start_col += DCTSIZE) { - /* Load data into workspace, applying unsigned->signed conversion */ - { register FAST_FLOAT *workspaceptr; - register JSAMPROW elemptr; - register int elemr; - - workspaceptr = workspace; - for (elemr = 0; elemr < DCTSIZE; elemr++) { - elemptr = sample_data[elemr] + start_col; -#if DCTSIZE == 8 /* unroll the inner loop */ - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - *workspaceptr++ = (FAST_FLOAT)(GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); -#else - { register int elemc; - for (elemc = DCTSIZE; elemc > 0; elemc--) { - *workspaceptr++ = (FAST_FLOAT) - (GETJSAMPLE(*elemptr++) - CENTERJSAMPLE); - } - } -#endif - } - } - - /* Perform the DCT */ - (*do_dct) (workspace); - - /* Quantize/descale the coefficients, and store into coef_blocks[] */ - { register FAST_FLOAT temp; - register int i; - register JCOEFPTR output_ptr = coef_blocks[bi]; - - for (i = 0; i < DCTSIZE2; i++) { - /* Apply the quantization and scaling factor */ - temp = workspace[i] * divisors[i]; - /* Round to nearest integer. - * Since C does not specify the direction of rounding for negative - * quotients, we have to force the dividend positive for portability. - * The maximum coefficient size is +-16K (for 12-bit data), so this - * code should work for either 16-bit or 32-bit ints. - */ - output_ptr[i] = (JCOEF) ((int) (temp + (FAST_FLOAT) 16384.5) - 16384); - } - } - } -} - -#endif /* DCT_FLOAT_SUPPORTED */ - - -/* - * Initialize FDCT manager. - */ - -GLOBAL(void) -jinit_forward_dct (j_compress_ptr cinfo) -{ - my_fdct_ptr fdct; - int i; - - fdct = (my_fdct_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_fdct_controller)); - cinfo->fdct = (struct jpeg_forward_dct *) fdct; - fdct->pub.start_pass = start_pass_fdctmgr; - - switch (cinfo->dct_method) { -#ifdef DCT_ISLOW_SUPPORTED - case JDCT_ISLOW: - fdct->pub.forward_DCT = forward_DCT; - fdct->do_dct = jpeg_fdct_islow; - break; -#endif -#ifdef DCT_IFAST_SUPPORTED - case JDCT_IFAST: - fdct->pub.forward_DCT = forward_DCT; - fdct->do_dct = jpeg_fdct_ifast; - break; -#endif -#ifdef DCT_FLOAT_SUPPORTED - case JDCT_FLOAT: - fdct->pub.forward_DCT = forward_DCT_float; - fdct->do_float_dct = jpeg_fdct_float; - break; -#endif - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } - - /* Mark divisor tables unallocated */ - for (i = 0; i < NUM_QUANT_TBLS; i++) { - fdct->divisors[i] = NULL; -#ifdef DCT_FLOAT_SUPPORTED - fdct->float_divisors[i] = NULL; -#endif - } -} diff --git a/project/jni/jpeg/jchuff.c b/project/jni/jpeg/jchuff.c deleted file mode 100644 index f23525054..000000000 --- a/project/jni/jpeg/jchuff.c +++ /dev/null @@ -1,909 +0,0 @@ -/* - * jchuff.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains Huffman entropy encoding routines. - * - * Much of the complexity here has to do with supporting output suspension. - * If the data destination module demands suspension, we want to be able to - * back up to the start of the current MCU. To do this, we copy state - * variables into local working storage, and update them back to the - * permanent JPEG objects only upon successful completion of an MCU. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jchuff.h" /* Declarations shared with jcphuff.c */ - - -/* Expanded entropy encoder object for Huffman encoding. - * - * The savable_state subrecord contains fields that change within an MCU, - * but must not be updated permanently until we complete the MCU. - */ - -typedef struct { - INT32 put_buffer; /* current bit-accumulation buffer */ - int put_bits; /* # of bits now in it */ - int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ -} savable_state; - -/* This macro is to work around compilers with missing or broken - * structure assignment. You'll need to fix this code if you have - * such a compiler and you change MAX_COMPS_IN_SCAN. - */ - -#ifndef NO_STRUCT_ASSIGN -#define ASSIGN_STATE(dest,src) ((dest) = (src)) -#else -#if MAX_COMPS_IN_SCAN == 4 -#define ASSIGN_STATE(dest,src) \ - ((dest).put_buffer = (src).put_buffer, \ - (dest).put_bits = (src).put_bits, \ - (dest).last_dc_val[0] = (src).last_dc_val[0], \ - (dest).last_dc_val[1] = (src).last_dc_val[1], \ - (dest).last_dc_val[2] = (src).last_dc_val[2], \ - (dest).last_dc_val[3] = (src).last_dc_val[3]) -#endif -#endif - - -typedef struct { - struct jpeg_entropy_encoder pub; /* public fields */ - - savable_state saved; /* Bit buffer & DC state at start of MCU */ - - /* These fields are NOT loaded into local working state. */ - unsigned int restarts_to_go; /* MCUs left in this restart interval */ - int next_restart_num; /* next restart number to write (0-7) */ - - /* Pointers to derived tables (these workspaces have image lifespan) */ - c_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS]; - c_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS]; - -#ifdef ENTROPY_OPT_SUPPORTED /* Statistics tables for optimization */ - long * dc_count_ptrs[NUM_HUFF_TBLS]; - long * ac_count_ptrs[NUM_HUFF_TBLS]; -#endif -} huff_entropy_encoder; - -typedef huff_entropy_encoder * huff_entropy_ptr; - -/* Working state while writing an MCU. - * This struct contains all the fields that are needed by subroutines. - */ - -typedef struct { - JOCTET * next_output_byte; /* => next byte to write in buffer */ - size_t free_in_buffer; /* # of byte spaces remaining in buffer */ - savable_state cur; /* Current bit buffer & DC state */ - j_compress_ptr cinfo; /* dump_buffer needs access to this */ -} working_state; - - -/* Forward declarations */ -METHODDEF(boolean) encode_mcu_huff JPP((j_compress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(void) finish_pass_huff JPP((j_compress_ptr cinfo)); -#ifdef ENTROPY_OPT_SUPPORTED -METHODDEF(boolean) encode_mcu_gather JPP((j_compress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(void) finish_pass_gather JPP((j_compress_ptr cinfo)); -#endif - - -/* - * Initialize for a Huffman-compressed scan. - * If gather_statistics is TRUE, we do not output anything during the scan, - * just count the Huffman symbols used and generate Huffman code tables. - */ - -METHODDEF(void) -start_pass_huff (j_compress_ptr cinfo, boolean gather_statistics) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - int ci, dctbl, actbl; - jpeg_component_info * compptr; - - if (gather_statistics) { -#ifdef ENTROPY_OPT_SUPPORTED - entropy->pub.encode_mcu = encode_mcu_gather; - entropy->pub.finish_pass = finish_pass_gather; -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else { - entropy->pub.encode_mcu = encode_mcu_huff; - entropy->pub.finish_pass = finish_pass_huff; - } - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - dctbl = compptr->dc_tbl_no; - actbl = compptr->ac_tbl_no; - if (gather_statistics) { -#ifdef ENTROPY_OPT_SUPPORTED - /* Check for invalid table indexes */ - /* (make_c_derived_tbl does this in the other path) */ - if (dctbl < 0 || dctbl >= NUM_HUFF_TBLS) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, dctbl); - if (actbl < 0 || actbl >= NUM_HUFF_TBLS) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, actbl); - /* Allocate and zero the statistics tables */ - /* Note that jpeg_gen_optimal_table expects 257 entries in each table! */ - if (entropy->dc_count_ptrs[dctbl] == NULL) - entropy->dc_count_ptrs[dctbl] = (long *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - 257 * SIZEOF(long)); - MEMZERO(entropy->dc_count_ptrs[dctbl], 257 * SIZEOF(long)); - if (entropy->ac_count_ptrs[actbl] == NULL) - entropy->ac_count_ptrs[actbl] = (long *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - 257 * SIZEOF(long)); - MEMZERO(entropy->ac_count_ptrs[actbl], 257 * SIZEOF(long)); -#endif - } else { - /* Compute derived values for Huffman tables */ - /* We may do this more than once for a table, but it's not expensive */ - jpeg_make_c_derived_tbl(cinfo, TRUE, dctbl, - & entropy->dc_derived_tbls[dctbl]); - jpeg_make_c_derived_tbl(cinfo, FALSE, actbl, - & entropy->ac_derived_tbls[actbl]); - } - /* Initialize DC predictions to 0 */ - entropy->saved.last_dc_val[ci] = 0; - } - - /* Initialize bit buffer to empty */ - entropy->saved.put_buffer = 0; - entropy->saved.put_bits = 0; - - /* Initialize restart stuff */ - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num = 0; -} - - -/* - * Compute the derived values for a Huffman table. - * This routine also performs some validation checks on the table. - * - * Note this is also used by jcphuff.c. - */ - -GLOBAL(void) -jpeg_make_c_derived_tbl (j_compress_ptr cinfo, boolean isDC, int tblno, - c_derived_tbl ** pdtbl) -{ - JHUFF_TBL *htbl; - c_derived_tbl *dtbl; - int p, i, l, lastp, si, maxsymbol; - char huffsize[257]; - unsigned int huffcode[257]; - unsigned int code; - - /* Note that huffsize[] and huffcode[] are filled in code-length order, - * paralleling the order of the symbols themselves in htbl->huffval[]. - */ - - /* Find the input Huffman table */ - if (tblno < 0 || tblno >= NUM_HUFF_TBLS) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); - htbl = - isDC ? cinfo->dc_huff_tbl_ptrs[tblno] : cinfo->ac_huff_tbl_ptrs[tblno]; - if (htbl == NULL) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); - - /* Allocate a workspace if we haven't already done so. */ - if (*pdtbl == NULL) - *pdtbl = (c_derived_tbl *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(c_derived_tbl)); - dtbl = *pdtbl; - - /* Figure C.1: make table of Huffman code length for each symbol */ - - p = 0; - for (l = 1; l <= 16; l++) { - i = (int) htbl->bits[l]; - if (i < 0 || p + i > 256) /* protect against table overrun */ - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - while (i--) - huffsize[p++] = (char) l; - } - huffsize[p] = 0; - lastp = p; - - /* Figure C.2: generate the codes themselves */ - /* We also validate that the counts represent a legal Huffman code tree. */ - - code = 0; - si = huffsize[0]; - p = 0; - while (huffsize[p]) { - while (((int) huffsize[p]) == si) { - huffcode[p++] = code; - code++; - } - /* code is now 1 more than the last code used for codelength si; but - * it must still fit in si bits, since no code is allowed to be all ones. - */ - if (((INT32) code) >= (((INT32) 1) << si)) - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - code <<= 1; - si++; - } - - /* Figure C.3: generate encoding tables */ - /* These are code and size indexed by symbol value */ - - /* Set all codeless symbols to have code length 0; - * this lets us detect duplicate VAL entries here, and later - * allows emit_bits to detect any attempt to emit such symbols. - */ - MEMZERO(dtbl->ehufsi, SIZEOF(dtbl->ehufsi)); - - /* This is also a convenient place to check for out-of-range - * and duplicated VAL entries. We allow 0..255 for AC symbols - * but only 0..15 for DC. (We could constrain them further - * based on data depth and mode, but this seems enough.) - */ - maxsymbol = isDC ? 15 : 255; - - for (p = 0; p < lastp; p++) { - i = htbl->huffval[p]; - if (i < 0 || i > maxsymbol || dtbl->ehufsi[i]) - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - dtbl->ehufco[i] = huffcode[p]; - dtbl->ehufsi[i] = huffsize[p]; - } -} - - -/* Outputting bytes to the file */ - -/* Emit a byte, taking 'action' if must suspend. */ -#define emit_byte(state,val,action) \ - { *(state)->next_output_byte++ = (JOCTET) (val); \ - if (--(state)->free_in_buffer == 0) \ - if (! dump_buffer(state)) \ - { action; } } - - -LOCAL(boolean) -dump_buffer (working_state * state) -/* Empty the output buffer; return TRUE if successful, FALSE if must suspend */ -{ - struct jpeg_destination_mgr * dest = state->cinfo->dest; - - if (! (*dest->empty_output_buffer) (state->cinfo)) - return FALSE; - /* After a successful buffer dump, must reset buffer pointers */ - state->next_output_byte = dest->next_output_byte; - state->free_in_buffer = dest->free_in_buffer; - return TRUE; -} - - -/* Outputting bits to the file */ - -/* Only the right 24 bits of put_buffer are used; the valid bits are - * left-justified in this part. At most 16 bits can be passed to emit_bits - * in one call, and we never retain more than 7 bits in put_buffer - * between calls, so 24 bits are sufficient. - */ - -INLINE -LOCAL(boolean) -emit_bits (working_state * state, unsigned int code, int size) -/* Emit some bits; return TRUE if successful, FALSE if must suspend */ -{ - /* This routine is heavily used, so it's worth coding tightly. */ - register INT32 put_buffer = (INT32) code; - register int put_bits = state->cur.put_bits; - - /* if size is 0, caller used an invalid Huffman table entry */ - if (size == 0) - ERREXIT(state->cinfo, JERR_HUFF_MISSING_CODE); - - put_buffer &= (((INT32) 1)<cur.put_buffer; /* and merge with old buffer contents */ - - while (put_bits >= 8) { - int c = (int) ((put_buffer >> 16) & 0xFF); - - emit_byte(state, c, return FALSE); - if (c == 0xFF) { /* need to stuff a zero byte? */ - emit_byte(state, 0, return FALSE); - } - put_buffer <<= 8; - put_bits -= 8; - } - - state->cur.put_buffer = put_buffer; /* update state variables */ - state->cur.put_bits = put_bits; - - return TRUE; -} - - -LOCAL(boolean) -flush_bits (working_state * state) -{ - if (! emit_bits(state, 0x7F, 7)) /* fill any partial byte with ones */ - return FALSE; - state->cur.put_buffer = 0; /* and reset bit-buffer to empty */ - state->cur.put_bits = 0; - return TRUE; -} - - -/* Encode a single block's worth of coefficients */ - -LOCAL(boolean) -encode_one_block (working_state * state, JCOEFPTR block, int last_dc_val, - c_derived_tbl *dctbl, c_derived_tbl *actbl) -{ - register int temp, temp2; - register int nbits; - register int k, r, i; - - /* Encode the DC coefficient difference per section F.1.2.1 */ - - temp = temp2 = block[0] - last_dc_val; - - if (temp < 0) { - temp = -temp; /* temp is abs value of input */ - /* For a negative input, want temp2 = bitwise complement of abs(input) */ - /* This code assumes we are on a two's complement machine */ - temp2--; - } - - /* Find the number of bits needed for the magnitude of the coefficient */ - nbits = 0; - while (temp) { - nbits++; - temp >>= 1; - } - /* Check for out-of-range coefficient values. - * Since we're encoding a difference, the range limit is twice as much. - */ - if (nbits > MAX_COEF_BITS+1) - ERREXIT(state->cinfo, JERR_BAD_DCT_COEF); - - /* Emit the Huffman-coded symbol for the number of bits */ - if (! emit_bits(state, dctbl->ehufco[nbits], dctbl->ehufsi[nbits])) - return FALSE; - - /* Emit that number of bits of the value, if positive, */ - /* or the complement of its magnitude, if negative. */ - if (nbits) /* emit_bits rejects calls with size 0 */ - if (! emit_bits(state, (unsigned int) temp2, nbits)) - return FALSE; - - /* Encode the AC coefficients per section F.1.2.2 */ - - r = 0; /* r = run length of zeros */ - - for (k = 1; k < DCTSIZE2; k++) { - if ((temp = block[jpeg_natural_order[k]]) == 0) { - r++; - } else { - /* if run length > 15, must emit special run-length-16 codes (0xF0) */ - while (r > 15) { - if (! emit_bits(state, actbl->ehufco[0xF0], actbl->ehufsi[0xF0])) - return FALSE; - r -= 16; - } - - temp2 = temp; - if (temp < 0) { - temp = -temp; /* temp is abs value of input */ - /* This code assumes we are on a two's complement machine */ - temp2--; - } - - /* Find the number of bits needed for the magnitude of the coefficient */ - nbits = 1; /* there must be at least one 1 bit */ - while ((temp >>= 1)) - nbits++; - /* Check for out-of-range coefficient values */ - if (nbits > MAX_COEF_BITS) - ERREXIT(state->cinfo, JERR_BAD_DCT_COEF); - - /* Emit Huffman symbol for run length / number of bits */ - i = (r << 4) + nbits; - if (! emit_bits(state, actbl->ehufco[i], actbl->ehufsi[i])) - return FALSE; - - /* Emit that number of bits of the value, if positive, */ - /* or the complement of its magnitude, if negative. */ - if (! emit_bits(state, (unsigned int) temp2, nbits)) - return FALSE; - - r = 0; - } - } - - /* If the last coef(s) were zero, emit an end-of-block code */ - if (r > 0) - if (! emit_bits(state, actbl->ehufco[0], actbl->ehufsi[0])) - return FALSE; - - return TRUE; -} - - -/* - * Emit a restart marker & resynchronize predictions. - */ - -LOCAL(boolean) -emit_restart (working_state * state, int restart_num) -{ - int ci; - - if (! flush_bits(state)) - return FALSE; - - emit_byte(state, 0xFF, return FALSE); - emit_byte(state, JPEG_RST0 + restart_num, return FALSE); - - /* Re-initialize DC predictions to 0 */ - for (ci = 0; ci < state->cinfo->comps_in_scan; ci++) - state->cur.last_dc_val[ci] = 0; - - /* The restart counter is not updated until we successfully write the MCU. */ - - return TRUE; -} - - -/* - * Encode and output one MCU's worth of Huffman-compressed coefficients. - */ - -METHODDEF(boolean) -encode_mcu_huff (j_compress_ptr cinfo, JBLOCKROW *MCU_data) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - working_state state; - int blkn, ci; - jpeg_component_info * compptr; - - /* Load up working state */ - state.next_output_byte = cinfo->dest->next_output_byte; - state.free_in_buffer = cinfo->dest->free_in_buffer; - ASSIGN_STATE(state.cur, entropy->saved); - state.cinfo = cinfo; - - /* Emit restart marker if needed */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) - if (! emit_restart(&state, entropy->next_restart_num)) - return FALSE; - } - - /* Encode the MCU data blocks */ - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - ci = cinfo->MCU_membership[blkn]; - compptr = cinfo->cur_comp_info[ci]; - if (! encode_one_block(&state, - MCU_data[blkn][0], state.cur.last_dc_val[ci], - entropy->dc_derived_tbls[compptr->dc_tbl_no], - entropy->ac_derived_tbls[compptr->ac_tbl_no])) - return FALSE; - /* Update last_dc_val */ - state.cur.last_dc_val[ci] = MCU_data[blkn][0][0]; - } - - /* Completed MCU, so update state */ - cinfo->dest->next_output_byte = state.next_output_byte; - cinfo->dest->free_in_buffer = state.free_in_buffer; - ASSIGN_STATE(entropy->saved, state.cur); - - /* Update restart-interval state too */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) { - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num++; - entropy->next_restart_num &= 7; - } - entropy->restarts_to_go--; - } - - return TRUE; -} - - -/* - * Finish up at the end of a Huffman-compressed scan. - */ - -METHODDEF(void) -finish_pass_huff (j_compress_ptr cinfo) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - working_state state; - - /* Load up working state ... flush_bits needs it */ - state.next_output_byte = cinfo->dest->next_output_byte; - state.free_in_buffer = cinfo->dest->free_in_buffer; - ASSIGN_STATE(state.cur, entropy->saved); - state.cinfo = cinfo; - - /* Flush out the last data */ - if (! flush_bits(&state)) - ERREXIT(cinfo, JERR_CANT_SUSPEND); - - /* Update state */ - cinfo->dest->next_output_byte = state.next_output_byte; - cinfo->dest->free_in_buffer = state.free_in_buffer; - ASSIGN_STATE(entropy->saved, state.cur); -} - - -/* - * Huffman coding optimization. - * - * We first scan the supplied data and count the number of uses of each symbol - * that is to be Huffman-coded. (This process MUST agree with the code above.) - * Then we build a Huffman coding tree for the observed counts. - * Symbols which are not needed at all for the particular image are not - * assigned any code, which saves space in the DHT marker as well as in - * the compressed data. - */ - -#ifdef ENTROPY_OPT_SUPPORTED - - -/* Process a single block's worth of coefficients */ - -LOCAL(void) -htest_one_block (j_compress_ptr cinfo, JCOEFPTR block, int last_dc_val, - long dc_counts[], long ac_counts[]) -{ - register int temp; - register int nbits; - register int k, r; - - /* Encode the DC coefficient difference per section F.1.2.1 */ - - temp = block[0] - last_dc_val; - if (temp < 0) - temp = -temp; - - /* Find the number of bits needed for the magnitude of the coefficient */ - nbits = 0; - while (temp) { - nbits++; - temp >>= 1; - } - /* Check for out-of-range coefficient values. - * Since we're encoding a difference, the range limit is twice as much. - */ - if (nbits > MAX_COEF_BITS+1) - ERREXIT(cinfo, JERR_BAD_DCT_COEF); - - /* Count the Huffman symbol for the number of bits */ - dc_counts[nbits]++; - - /* Encode the AC coefficients per section F.1.2.2 */ - - r = 0; /* r = run length of zeros */ - - for (k = 1; k < DCTSIZE2; k++) { - if ((temp = block[jpeg_natural_order[k]]) == 0) { - r++; - } else { - /* if run length > 15, must emit special run-length-16 codes (0xF0) */ - while (r > 15) { - ac_counts[0xF0]++; - r -= 16; - } - - /* Find the number of bits needed for the magnitude of the coefficient */ - if (temp < 0) - temp = -temp; - - /* Find the number of bits needed for the magnitude of the coefficient */ - nbits = 1; /* there must be at least one 1 bit */ - while ((temp >>= 1)) - nbits++; - /* Check for out-of-range coefficient values */ - if (nbits > MAX_COEF_BITS) - ERREXIT(cinfo, JERR_BAD_DCT_COEF); - - /* Count Huffman symbol for run length / number of bits */ - ac_counts[(r << 4) + nbits]++; - - r = 0; - } - } - - /* If the last coef(s) were zero, emit an end-of-block code */ - if (r > 0) - ac_counts[0]++; -} - - -/* - * Trial-encode one MCU's worth of Huffman-compressed coefficients. - * No data is actually output, so no suspension return is possible. - */ - -METHODDEF(boolean) -encode_mcu_gather (j_compress_ptr cinfo, JBLOCKROW *MCU_data) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - int blkn, ci; - jpeg_component_info * compptr; - - /* Take care of restart intervals if needed */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) { - /* Re-initialize DC predictions to 0 */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) - entropy->saved.last_dc_val[ci] = 0; - /* Update restart state */ - entropy->restarts_to_go = cinfo->restart_interval; - } - entropy->restarts_to_go--; - } - - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - ci = cinfo->MCU_membership[blkn]; - compptr = cinfo->cur_comp_info[ci]; - htest_one_block(cinfo, MCU_data[blkn][0], entropy->saved.last_dc_val[ci], - entropy->dc_count_ptrs[compptr->dc_tbl_no], - entropy->ac_count_ptrs[compptr->ac_tbl_no]); - entropy->saved.last_dc_val[ci] = MCU_data[blkn][0][0]; - } - - return TRUE; -} - - -/* - * Generate the best Huffman code table for the given counts, fill htbl. - * Note this is also used by jcphuff.c. - * - * The JPEG standard requires that no symbol be assigned a codeword of all - * one bits (so that padding bits added at the end of a compressed segment - * can't look like a valid code). Because of the canonical ordering of - * codewords, this just means that there must be an unused slot in the - * longest codeword length category. Section K.2 of the JPEG spec suggests - * reserving such a slot by pretending that symbol 256 is a valid symbol - * with count 1. In theory that's not optimal; giving it count zero but - * including it in the symbol set anyway should give a better Huffman code. - * But the theoretically better code actually seems to come out worse in - * practice, because it produces more all-ones bytes (which incur stuffed - * zero bytes in the final file). In any case the difference is tiny. - * - * The JPEG standard requires Huffman codes to be no more than 16 bits long. - * If some symbols have a very small but nonzero probability, the Huffman tree - * must be adjusted to meet the code length restriction. We currently use - * the adjustment method suggested in JPEG section K.2. This method is *not* - * optimal; it may not choose the best possible limited-length code. But - * typically only very-low-frequency symbols will be given less-than-optimal - * lengths, so the code is almost optimal. Experimental comparisons against - * an optimal limited-length-code algorithm indicate that the difference is - * microscopic --- usually less than a hundredth of a percent of total size. - * So the extra complexity of an optimal algorithm doesn't seem worthwhile. - */ - -GLOBAL(void) -jpeg_gen_optimal_table (j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]) -{ -#define MAX_CLEN 32 /* assumed maximum initial code length */ - UINT8 bits[MAX_CLEN+1]; /* bits[k] = # of symbols with code length k */ - int codesize[257]; /* codesize[k] = code length of symbol k */ - int others[257]; /* next symbol in current branch of tree */ - int c1, c2; - int p, i, j; - long v; - - /* This algorithm is explained in section K.2 of the JPEG standard */ - - MEMZERO(bits, SIZEOF(bits)); - MEMZERO(codesize, SIZEOF(codesize)); - for (i = 0; i < 257; i++) - others[i] = -1; /* init links to empty */ - - freq[256] = 1; /* make sure 256 has a nonzero count */ - /* Including the pseudo-symbol 256 in the Huffman procedure guarantees - * that no real symbol is given code-value of all ones, because 256 - * will be placed last in the largest codeword category. - */ - - /* Huffman's basic algorithm to assign optimal code lengths to symbols */ - - for (;;) { - /* Find the smallest nonzero frequency, set c1 = its symbol */ - /* In case of ties, take the larger symbol number */ - c1 = -1; - v = 1000000000L; - for (i = 0; i <= 256; i++) { - if (freq[i] && freq[i] <= v) { - v = freq[i]; - c1 = i; - } - } - - /* Find the next smallest nonzero frequency, set c2 = its symbol */ - /* In case of ties, take the larger symbol number */ - c2 = -1; - v = 1000000000L; - for (i = 0; i <= 256; i++) { - if (freq[i] && freq[i] <= v && i != c1) { - v = freq[i]; - c2 = i; - } - } - - /* Done if we've merged everything into one frequency */ - if (c2 < 0) - break; - - /* Else merge the two counts/trees */ - freq[c1] += freq[c2]; - freq[c2] = 0; - - /* Increment the codesize of everything in c1's tree branch */ - codesize[c1]++; - while (others[c1] >= 0) { - c1 = others[c1]; - codesize[c1]++; - } - - others[c1] = c2; /* chain c2 onto c1's tree branch */ - - /* Increment the codesize of everything in c2's tree branch */ - codesize[c2]++; - while (others[c2] >= 0) { - c2 = others[c2]; - codesize[c2]++; - } - } - - /* Now count the number of symbols of each code length */ - for (i = 0; i <= 256; i++) { - if (codesize[i]) { - /* The JPEG standard seems to think that this can't happen, */ - /* but I'm paranoid... */ - if (codesize[i] > MAX_CLEN) - ERREXIT(cinfo, JERR_HUFF_CLEN_OVERFLOW); - - bits[codesize[i]]++; - } - } - - /* JPEG doesn't allow symbols with code lengths over 16 bits, so if the pure - * Huffman procedure assigned any such lengths, we must adjust the coding. - * Here is what the JPEG spec says about how this next bit works: - * Since symbols are paired for the longest Huffman code, the symbols are - * removed from this length category two at a time. The prefix for the pair - * (which is one bit shorter) is allocated to one of the pair; then, - * skipping the BITS entry for that prefix length, a code word from the next - * shortest nonzero BITS entry is converted into a prefix for two code words - * one bit longer. - */ - - for (i = MAX_CLEN; i > 16; i--) { - while (bits[i] > 0) { - j = i - 2; /* find length of new prefix to be used */ - while (bits[j] == 0) - j--; - - bits[i] -= 2; /* remove two symbols */ - bits[i-1]++; /* one goes in this length */ - bits[j+1] += 2; /* two new symbols in this length */ - bits[j]--; /* symbol of this length is now a prefix */ - } - } - - /* Remove the count for the pseudo-symbol 256 from the largest codelength */ - while (bits[i] == 0) /* find largest codelength still in use */ - i--; - bits[i]--; - - /* Return final symbol counts (only for lengths 0..16) */ - MEMCOPY(htbl->bits, bits, SIZEOF(htbl->bits)); - - /* Return a list of the symbols sorted by code length */ - /* It's not real clear to me why we don't need to consider the codelength - * changes made above, but the JPEG spec seems to think this works. - */ - p = 0; - for (i = 1; i <= MAX_CLEN; i++) { - for (j = 0; j <= 255; j++) { - if (codesize[j] == i) { - htbl->huffval[p] = (UINT8) j; - p++; - } - } - } - - /* Set sent_table FALSE so updated table will be written to JPEG file. */ - htbl->sent_table = FALSE; -} - - -/* - * Finish up a statistics-gathering pass and create the new Huffman tables. - */ - -METHODDEF(void) -finish_pass_gather (j_compress_ptr cinfo) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - int ci, dctbl, actbl; - jpeg_component_info * compptr; - JHUFF_TBL **htblptr; - boolean did_dc[NUM_HUFF_TBLS]; - boolean did_ac[NUM_HUFF_TBLS]; - - /* It's important not to apply jpeg_gen_optimal_table more than once - * per table, because it clobbers the input frequency counts! - */ - MEMZERO(did_dc, SIZEOF(did_dc)); - MEMZERO(did_ac, SIZEOF(did_ac)); - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - dctbl = compptr->dc_tbl_no; - actbl = compptr->ac_tbl_no; - if (! did_dc[dctbl]) { - htblptr = & cinfo->dc_huff_tbl_ptrs[dctbl]; - if (*htblptr == NULL) - *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); - jpeg_gen_optimal_table(cinfo, *htblptr, entropy->dc_count_ptrs[dctbl]); - did_dc[dctbl] = TRUE; - } - if (! did_ac[actbl]) { - htblptr = & cinfo->ac_huff_tbl_ptrs[actbl]; - if (*htblptr == NULL) - *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); - jpeg_gen_optimal_table(cinfo, *htblptr, entropy->ac_count_ptrs[actbl]); - did_ac[actbl] = TRUE; - } - } -} - - -#endif /* ENTROPY_OPT_SUPPORTED */ - - -/* - * Module initialization routine for Huffman entropy encoding. - */ - -GLOBAL(void) -jinit_huff_encoder (j_compress_ptr cinfo) -{ - huff_entropy_ptr entropy; - int i; - - entropy = (huff_entropy_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(huff_entropy_encoder)); - cinfo->entropy = (struct jpeg_entropy_encoder *) entropy; - entropy->pub.start_pass = start_pass_huff; - - /* Mark tables unallocated */ - for (i = 0; i < NUM_HUFF_TBLS; i++) { - entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL; -#ifdef ENTROPY_OPT_SUPPORTED - entropy->dc_count_ptrs[i] = entropy->ac_count_ptrs[i] = NULL; -#endif - } -} diff --git a/project/jni/jpeg/jchuff.h b/project/jni/jpeg/jchuff.h deleted file mode 100644 index a9599fc1e..000000000 --- a/project/jni/jpeg/jchuff.h +++ /dev/null @@ -1,47 +0,0 @@ -/* - * jchuff.h - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains declarations for Huffman entropy encoding routines - * that are shared between the sequential encoder (jchuff.c) and the - * progressive encoder (jcphuff.c). No other modules need to see these. - */ - -/* The legal range of a DCT coefficient is - * -1024 .. +1023 for 8-bit data; - * -16384 .. +16383 for 12-bit data. - * Hence the magnitude should always fit in 10 or 14 bits respectively. - */ - -#if BITS_IN_JSAMPLE == 8 -#define MAX_COEF_BITS 10 -#else -#define MAX_COEF_BITS 14 -#endif - -/* Derived data constructed for each Huffman table */ - -typedef struct { - unsigned int ehufco[256]; /* code for each symbol */ - char ehufsi[256]; /* length of code for each symbol */ - /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */ -} c_derived_tbl; - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jpeg_make_c_derived_tbl jMkCDerived -#define jpeg_gen_optimal_table jGenOptTbl -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - -/* Expand a Huffman table definition into the derived format */ -EXTERN(void) jpeg_make_c_derived_tbl - JPP((j_compress_ptr cinfo, boolean isDC, int tblno, - c_derived_tbl ** pdtbl)); - -/* Generate an optimal table definition given the specified counts */ -EXTERN(void) jpeg_gen_optimal_table - JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[])); diff --git a/project/jni/jpeg/jcinit.c b/project/jni/jpeg/jcinit.c deleted file mode 100644 index 5efffe331..000000000 --- a/project/jni/jpeg/jcinit.c +++ /dev/null @@ -1,72 +0,0 @@ -/* - * jcinit.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains initialization logic for the JPEG compressor. - * This routine is in charge of selecting the modules to be executed and - * making an initialization call to each one. - * - * Logically, this code belongs in jcmaster.c. It's split out because - * linking this routine implies linking the entire compression library. - * For a transcoding-only application, we want to be able to use jcmaster.c - * without linking in the whole library. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * Master selection of compression modules. - * This is done once at the start of processing an image. We determine - * which modules will be used and give them appropriate initialization calls. - */ - -GLOBAL(void) -jinit_compress_master (j_compress_ptr cinfo) -{ - /* Initialize master control (includes parameter checking/processing) */ - jinit_c_master_control(cinfo, FALSE /* full compression */); - - /* Preprocessing */ - if (! cinfo->raw_data_in) { - jinit_color_converter(cinfo); - jinit_downsampler(cinfo); - jinit_c_prep_controller(cinfo, FALSE /* never need full buffer here */); - } - /* Forward DCT */ - jinit_forward_dct(cinfo); - /* Entropy encoding: either Huffman or arithmetic coding. */ - if (cinfo->arith_code) { - ERREXIT(cinfo, JERR_ARITH_NOTIMPL); - } else { - if (cinfo->progressive_mode) { -#ifdef C_PROGRESSIVE_SUPPORTED - jinit_phuff_encoder(cinfo); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else - jinit_huff_encoder(cinfo); - } - - /* Need a full-image coefficient buffer in any multi-pass mode. */ - jinit_c_coef_controller(cinfo, - (boolean) (cinfo->num_scans > 1 || cinfo->optimize_coding)); - jinit_c_main_controller(cinfo, FALSE /* never need full buffer here */); - - jinit_marker_writer(cinfo); - - /* We can now tell the memory manager to allocate virtual arrays. */ - (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); - - /* Write the datastream header (SOI) immediately. - * Frame and scan headers are postponed till later. - * This lets application insert special markers after the SOI. - */ - (*cinfo->marker->write_file_header) (cinfo); -} diff --git a/project/jni/jpeg/jcmainct.c b/project/jni/jpeg/jcmainct.c deleted file mode 100644 index e0279a7e0..000000000 --- a/project/jni/jpeg/jcmainct.c +++ /dev/null @@ -1,293 +0,0 @@ -/* - * jcmainct.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the main buffer controller for compression. - * The main buffer lies between the pre-processor and the JPEG - * compressor proper; it holds downsampled data in the JPEG colorspace. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Note: currently, there is no operating mode in which a full-image buffer - * is needed at this step. If there were, that mode could not be used with - * "raw data" input, since this module is bypassed in that case. However, - * we've left the code here for possible use in special applications. - */ -#undef FULL_MAIN_BUFFER_SUPPORTED - - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_c_main_controller pub; /* public fields */ - - JDIMENSION cur_iMCU_row; /* number of current iMCU row */ - JDIMENSION rowgroup_ctr; /* counts row groups received in iMCU row */ - boolean suspended; /* remember if we suspended output */ - J_BUF_MODE pass_mode; /* current operating mode */ - - /* If using just a strip buffer, this points to the entire set of buffers - * (we allocate one for each component). In the full-image case, this - * points to the currently accessible strips of the virtual arrays. - */ - JSAMPARRAY buffer[MAX_COMPONENTS]; - -#ifdef FULL_MAIN_BUFFER_SUPPORTED - /* If using full-image storage, this array holds pointers to virtual-array - * control blocks for each component. Unused if not full-image storage. - */ - jvirt_sarray_ptr whole_image[MAX_COMPONENTS]; -#endif -} my_main_controller; - -typedef my_main_controller * my_main_ptr; - - -/* Forward declarations */ -METHODDEF(void) process_data_simple_main - JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf, - JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); -#ifdef FULL_MAIN_BUFFER_SUPPORTED -METHODDEF(void) process_data_buffer_main - JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf, - JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); -#endif - - -/* - * Initialize for a processing pass. - */ - -METHODDEF(void) -start_pass_main (j_compress_ptr cinfo, J_BUF_MODE pass_mode) -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - - /* Do nothing in raw-data mode. */ - if (cinfo->raw_data_in) - return; - - main->cur_iMCU_row = 0; /* initialize counters */ - main->rowgroup_ctr = 0; - main->suspended = FALSE; - main->pass_mode = pass_mode; /* save mode for use by process_data */ - - switch (pass_mode) { - case JBUF_PASS_THRU: -#ifdef FULL_MAIN_BUFFER_SUPPORTED - if (main->whole_image[0] != NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); -#endif - main->pub.process_data = process_data_simple_main; - break; -#ifdef FULL_MAIN_BUFFER_SUPPORTED - case JBUF_SAVE_SOURCE: - case JBUF_CRANK_DEST: - case JBUF_SAVE_AND_PASS: - if (main->whole_image[0] == NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - main->pub.process_data = process_data_buffer_main; - break; -#endif - default: - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - break; - } -} - - -/* - * Process some data. - * This routine handles the simple pass-through mode, - * where we have only a strip buffer. - */ - -METHODDEF(void) -process_data_simple_main (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail) -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - - while (main->cur_iMCU_row < cinfo->total_iMCU_rows) { - /* Read input data if we haven't filled the main buffer yet */ - if (main->rowgroup_ctr < DCTSIZE) - (*cinfo->prep->pre_process_data) (cinfo, - input_buf, in_row_ctr, in_rows_avail, - main->buffer, &main->rowgroup_ctr, - (JDIMENSION) DCTSIZE); - - /* If we don't have a full iMCU row buffered, return to application for - * more data. Note that preprocessor will always pad to fill the iMCU row - * at the bottom of the image. - */ - if (main->rowgroup_ctr != DCTSIZE) - return; - - /* Send the completed row to the compressor */ - if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) { - /* If compressor did not consume the whole row, then we must need to - * suspend processing and return to the application. In this situation - * we pretend we didn't yet consume the last input row; otherwise, if - * it happened to be the last row of the image, the application would - * think we were done. - */ - if (! main->suspended) { - (*in_row_ctr)--; - main->suspended = TRUE; - } - return; - } - /* We did finish the row. Undo our little suspension hack if a previous - * call suspended; then mark the main buffer empty. - */ - if (main->suspended) { - (*in_row_ctr)++; - main->suspended = FALSE; - } - main->rowgroup_ctr = 0; - main->cur_iMCU_row++; - } -} - - -#ifdef FULL_MAIN_BUFFER_SUPPORTED - -/* - * Process some data. - * This routine handles all of the modes that use a full-size buffer. - */ - -METHODDEF(void) -process_data_buffer_main (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail) -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - int ci; - jpeg_component_info *compptr; - boolean writing = (main->pass_mode != JBUF_CRANK_DEST); - - while (main->cur_iMCU_row < cinfo->total_iMCU_rows) { - /* Realign the virtual buffers if at the start of an iMCU row. */ - if (main->rowgroup_ctr == 0) { - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - main->buffer[ci] = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, main->whole_image[ci], - main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE), - (JDIMENSION) (compptr->v_samp_factor * DCTSIZE), writing); - } - /* In a read pass, pretend we just read some source data. */ - if (! writing) { - *in_row_ctr += cinfo->max_v_samp_factor * DCTSIZE; - main->rowgroup_ctr = DCTSIZE; - } - } - - /* If a write pass, read input data until the current iMCU row is full. */ - /* Note: preprocessor will pad if necessary to fill the last iMCU row. */ - if (writing) { - (*cinfo->prep->pre_process_data) (cinfo, - input_buf, in_row_ctr, in_rows_avail, - main->buffer, &main->rowgroup_ctr, - (JDIMENSION) DCTSIZE); - /* Return to application if we need more data to fill the iMCU row. */ - if (main->rowgroup_ctr < DCTSIZE) - return; - } - - /* Emit data, unless this is a sink-only pass. */ - if (main->pass_mode != JBUF_SAVE_SOURCE) { - if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) { - /* If compressor did not consume the whole row, then we must need to - * suspend processing and return to the application. In this situation - * we pretend we didn't yet consume the last input row; otherwise, if - * it happened to be the last row of the image, the application would - * think we were done. - */ - if (! main->suspended) { - (*in_row_ctr)--; - main->suspended = TRUE; - } - return; - } - /* We did finish the row. Undo our little suspension hack if a previous - * call suspended; then mark the main buffer empty. - */ - if (main->suspended) { - (*in_row_ctr)++; - main->suspended = FALSE; - } - } - - /* If get here, we are done with this iMCU row. Mark buffer empty. */ - main->rowgroup_ctr = 0; - main->cur_iMCU_row++; - } -} - -#endif /* FULL_MAIN_BUFFER_SUPPORTED */ - - -/* - * Initialize main buffer controller. - */ - -GLOBAL(void) -jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer) -{ - my_main_ptr main; - int ci; - jpeg_component_info *compptr; - - main = (my_main_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_main_controller)); - cinfo->main = (struct jpeg_c_main_controller *) main; - main->pub.start_pass = start_pass_main; - - /* We don't need to create a buffer in raw-data mode. */ - if (cinfo->raw_data_in) - return; - - /* Create the buffer. It holds downsampled data, so each component - * may be of a different size. - */ - if (need_full_buffer) { -#ifdef FULL_MAIN_BUFFER_SUPPORTED - /* Allocate a full-image virtual array for each component */ - /* Note we pad the bottom to a multiple of the iMCU height */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - main->whole_image[ci] = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - compptr->width_in_blocks * DCTSIZE, - (JDIMENSION) jround_up((long) compptr->height_in_blocks, - (long) compptr->v_samp_factor) * DCTSIZE, - (JDIMENSION) (compptr->v_samp_factor * DCTSIZE)); - } -#else - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); -#endif - } else { -#ifdef FULL_MAIN_BUFFER_SUPPORTED - main->whole_image[0] = NULL; /* flag for no virtual arrays */ -#endif - /* Allocate a strip buffer for each component */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - main->buffer[ci] = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - compptr->width_in_blocks * DCTSIZE, - (JDIMENSION) (compptr->v_samp_factor * DCTSIZE)); - } - } -} diff --git a/project/jni/jpeg/jcmarker.c b/project/jni/jpeg/jcmarker.c deleted file mode 100644 index 3d1e6c6d5..000000000 --- a/project/jni/jpeg/jcmarker.c +++ /dev/null @@ -1,664 +0,0 @@ -/* - * jcmarker.c - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to write JPEG datastream markers. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -typedef enum { /* JPEG marker codes */ - M_SOF0 = 0xc0, - M_SOF1 = 0xc1, - M_SOF2 = 0xc2, - M_SOF3 = 0xc3, - - M_SOF5 = 0xc5, - M_SOF6 = 0xc6, - M_SOF7 = 0xc7, - - M_JPG = 0xc8, - M_SOF9 = 0xc9, - M_SOF10 = 0xca, - M_SOF11 = 0xcb, - - M_SOF13 = 0xcd, - M_SOF14 = 0xce, - M_SOF15 = 0xcf, - - M_DHT = 0xc4, - - M_DAC = 0xcc, - - M_RST0 = 0xd0, - M_RST1 = 0xd1, - M_RST2 = 0xd2, - M_RST3 = 0xd3, - M_RST4 = 0xd4, - M_RST5 = 0xd5, - M_RST6 = 0xd6, - M_RST7 = 0xd7, - - M_SOI = 0xd8, - M_EOI = 0xd9, - M_SOS = 0xda, - M_DQT = 0xdb, - M_DNL = 0xdc, - M_DRI = 0xdd, - M_DHP = 0xde, - M_EXP = 0xdf, - - M_APP0 = 0xe0, - M_APP1 = 0xe1, - M_APP2 = 0xe2, - M_APP3 = 0xe3, - M_APP4 = 0xe4, - M_APP5 = 0xe5, - M_APP6 = 0xe6, - M_APP7 = 0xe7, - M_APP8 = 0xe8, - M_APP9 = 0xe9, - M_APP10 = 0xea, - M_APP11 = 0xeb, - M_APP12 = 0xec, - M_APP13 = 0xed, - M_APP14 = 0xee, - M_APP15 = 0xef, - - M_JPG0 = 0xf0, - M_JPG13 = 0xfd, - M_COM = 0xfe, - - M_TEM = 0x01, - - M_ERROR = 0x100 -} JPEG_MARKER; - - -/* Private state */ - -typedef struct { - struct jpeg_marker_writer pub; /* public fields */ - - unsigned int last_restart_interval; /* last DRI value emitted; 0 after SOI */ -} my_marker_writer; - -typedef my_marker_writer * my_marker_ptr; - - -/* - * Basic output routines. - * - * Note that we do not support suspension while writing a marker. - * Therefore, an application using suspension must ensure that there is - * enough buffer space for the initial markers (typ. 600-700 bytes) before - * calling jpeg_start_compress, and enough space to write the trailing EOI - * (a few bytes) before calling jpeg_finish_compress. Multipass compression - * modes are not supported at all with suspension, so those two are the only - * points where markers will be written. - */ - -LOCAL(void) -emit_byte (j_compress_ptr cinfo, int val) -/* Emit a byte */ -{ - struct jpeg_destination_mgr * dest = cinfo->dest; - - *(dest->next_output_byte)++ = (JOCTET) val; - if (--dest->free_in_buffer == 0) { - if (! (*dest->empty_output_buffer) (cinfo)) - ERREXIT(cinfo, JERR_CANT_SUSPEND); - } -} - - -LOCAL(void) -emit_marker (j_compress_ptr cinfo, JPEG_MARKER mark) -/* Emit a marker code */ -{ - emit_byte(cinfo, 0xFF); - emit_byte(cinfo, (int) mark); -} - - -LOCAL(void) -emit_2bytes (j_compress_ptr cinfo, int value) -/* Emit a 2-byte integer; these are always MSB first in JPEG files */ -{ - emit_byte(cinfo, (value >> 8) & 0xFF); - emit_byte(cinfo, value & 0xFF); -} - - -/* - * Routines to write specific marker types. - */ - -LOCAL(int) -emit_dqt (j_compress_ptr cinfo, int index) -/* Emit a DQT marker */ -/* Returns the precision used (0 = 8bits, 1 = 16bits) for baseline checking */ -{ - JQUANT_TBL * qtbl = cinfo->quant_tbl_ptrs[index]; - int prec; - int i; - - if (qtbl == NULL) - ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, index); - - prec = 0; - for (i = 0; i < DCTSIZE2; i++) { - if (qtbl->quantval[i] > 255) - prec = 1; - } - - if (! qtbl->sent_table) { - emit_marker(cinfo, M_DQT); - - emit_2bytes(cinfo, prec ? DCTSIZE2*2 + 1 + 2 : DCTSIZE2 + 1 + 2); - - emit_byte(cinfo, index + (prec<<4)); - - for (i = 0; i < DCTSIZE2; i++) { - /* The table entries must be emitted in zigzag order. */ - unsigned int qval = qtbl->quantval[jpeg_natural_order[i]]; - if (prec) - emit_byte(cinfo, (int) (qval >> 8)); - emit_byte(cinfo, (int) (qval & 0xFF)); - } - - qtbl->sent_table = TRUE; - } - - return prec; -} - - -LOCAL(void) -emit_dht (j_compress_ptr cinfo, int index, boolean is_ac) -/* Emit a DHT marker */ -{ - JHUFF_TBL * htbl; - int length, i; - - if (is_ac) { - htbl = cinfo->ac_huff_tbl_ptrs[index]; - index += 0x10; /* output index has AC bit set */ - } else { - htbl = cinfo->dc_huff_tbl_ptrs[index]; - } - - if (htbl == NULL) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, index); - - if (! htbl->sent_table) { - emit_marker(cinfo, M_DHT); - - length = 0; - for (i = 1; i <= 16; i++) - length += htbl->bits[i]; - - emit_2bytes(cinfo, length + 2 + 1 + 16); - emit_byte(cinfo, index); - - for (i = 1; i <= 16; i++) - emit_byte(cinfo, htbl->bits[i]); - - for (i = 0; i < length; i++) - emit_byte(cinfo, htbl->huffval[i]); - - htbl->sent_table = TRUE; - } -} - - -LOCAL(void) -emit_dac (j_compress_ptr cinfo) -/* Emit a DAC marker */ -/* Since the useful info is so small, we want to emit all the tables in */ -/* one DAC marker. Therefore this routine does its own scan of the table. */ -{ -#ifdef C_ARITH_CODING_SUPPORTED - char dc_in_use[NUM_ARITH_TBLS]; - char ac_in_use[NUM_ARITH_TBLS]; - int length, i; - jpeg_component_info *compptr; - - for (i = 0; i < NUM_ARITH_TBLS; i++) - dc_in_use[i] = ac_in_use[i] = 0; - - for (i = 0; i < cinfo->comps_in_scan; i++) { - compptr = cinfo->cur_comp_info[i]; - dc_in_use[compptr->dc_tbl_no] = 1; - ac_in_use[compptr->ac_tbl_no] = 1; - } - - length = 0; - for (i = 0; i < NUM_ARITH_TBLS; i++) - length += dc_in_use[i] + ac_in_use[i]; - - emit_marker(cinfo, M_DAC); - - emit_2bytes(cinfo, length*2 + 2); - - for (i = 0; i < NUM_ARITH_TBLS; i++) { - if (dc_in_use[i]) { - emit_byte(cinfo, i); - emit_byte(cinfo, cinfo->arith_dc_L[i] + (cinfo->arith_dc_U[i]<<4)); - } - if (ac_in_use[i]) { - emit_byte(cinfo, i + 0x10); - emit_byte(cinfo, cinfo->arith_ac_K[i]); - } - } -#endif /* C_ARITH_CODING_SUPPORTED */ -} - - -LOCAL(void) -emit_dri (j_compress_ptr cinfo) -/* Emit a DRI marker */ -{ - emit_marker(cinfo, M_DRI); - - emit_2bytes(cinfo, 4); /* fixed length */ - - emit_2bytes(cinfo, (int) cinfo->restart_interval); -} - - -LOCAL(void) -emit_sof (j_compress_ptr cinfo, JPEG_MARKER code) -/* Emit a SOF marker */ -{ - int ci; - jpeg_component_info *compptr; - - emit_marker(cinfo, code); - - emit_2bytes(cinfo, 3 * cinfo->num_components + 2 + 5 + 1); /* length */ - - /* Make sure image isn't bigger than SOF field can handle */ - if ((long) cinfo->image_height > 65535L || - (long) cinfo->image_width > 65535L) - ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) 65535); - - emit_byte(cinfo, cinfo->data_precision); - emit_2bytes(cinfo, (int) cinfo->image_height); - emit_2bytes(cinfo, (int) cinfo->image_width); - - emit_byte(cinfo, cinfo->num_components); - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - emit_byte(cinfo, compptr->component_id); - emit_byte(cinfo, (compptr->h_samp_factor << 4) + compptr->v_samp_factor); - emit_byte(cinfo, compptr->quant_tbl_no); - } -} - - -LOCAL(void) -emit_sos (j_compress_ptr cinfo) -/* Emit a SOS marker */ -{ - int i, td, ta; - jpeg_component_info *compptr; - - emit_marker(cinfo, M_SOS); - - emit_2bytes(cinfo, 2 * cinfo->comps_in_scan + 2 + 1 + 3); /* length */ - - emit_byte(cinfo, cinfo->comps_in_scan); - - for (i = 0; i < cinfo->comps_in_scan; i++) { - compptr = cinfo->cur_comp_info[i]; - emit_byte(cinfo, compptr->component_id); - td = compptr->dc_tbl_no; - ta = compptr->ac_tbl_no; - if (cinfo->progressive_mode) { - /* Progressive mode: only DC or only AC tables are used in one scan; - * furthermore, Huffman coding of DC refinement uses no table at all. - * We emit 0 for unused field(s); this is recommended by the P&M text - * but does not seem to be specified in the standard. - */ - if (cinfo->Ss == 0) { - ta = 0; /* DC scan */ - if (cinfo->Ah != 0 && !cinfo->arith_code) - td = 0; /* no DC table either */ - } else { - td = 0; /* AC scan */ - } - } - emit_byte(cinfo, (td << 4) + ta); - } - - emit_byte(cinfo, cinfo->Ss); - emit_byte(cinfo, cinfo->Se); - emit_byte(cinfo, (cinfo->Ah << 4) + cinfo->Al); -} - - -LOCAL(void) -emit_jfif_app0 (j_compress_ptr cinfo) -/* Emit a JFIF-compliant APP0 marker */ -{ - /* - * Length of APP0 block (2 bytes) - * Block ID (4 bytes - ASCII "JFIF") - * Zero byte (1 byte to terminate the ID string) - * Version Major, Minor (2 bytes - major first) - * Units (1 byte - 0x00 = none, 0x01 = inch, 0x02 = cm) - * Xdpu (2 bytes - dots per unit horizontal) - * Ydpu (2 bytes - dots per unit vertical) - * Thumbnail X size (1 byte) - * Thumbnail Y size (1 byte) - */ - - emit_marker(cinfo, M_APP0); - - emit_2bytes(cinfo, 2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1); /* length */ - - emit_byte(cinfo, 0x4A); /* Identifier: ASCII "JFIF" */ - emit_byte(cinfo, 0x46); - emit_byte(cinfo, 0x49); - emit_byte(cinfo, 0x46); - emit_byte(cinfo, 0); - emit_byte(cinfo, cinfo->JFIF_major_version); /* Version fields */ - emit_byte(cinfo, cinfo->JFIF_minor_version); - emit_byte(cinfo, cinfo->density_unit); /* Pixel size information */ - emit_2bytes(cinfo, (int) cinfo->X_density); - emit_2bytes(cinfo, (int) cinfo->Y_density); - emit_byte(cinfo, 0); /* No thumbnail image */ - emit_byte(cinfo, 0); -} - - -LOCAL(void) -emit_adobe_app14 (j_compress_ptr cinfo) -/* Emit an Adobe APP14 marker */ -{ - /* - * Length of APP14 block (2 bytes) - * Block ID (5 bytes - ASCII "Adobe") - * Version Number (2 bytes - currently 100) - * Flags0 (2 bytes - currently 0) - * Flags1 (2 bytes - currently 0) - * Color transform (1 byte) - * - * Although Adobe TN 5116 mentions Version = 101, all the Adobe files - * now in circulation seem to use Version = 100, so that's what we write. - * - * We write the color transform byte as 1 if the JPEG color space is - * YCbCr, 2 if it's YCCK, 0 otherwise. Adobe's definition has to do with - * whether the encoder performed a transformation, which is pretty useless. - */ - - emit_marker(cinfo, M_APP14); - - emit_2bytes(cinfo, 2 + 5 + 2 + 2 + 2 + 1); /* length */ - - emit_byte(cinfo, 0x41); /* Identifier: ASCII "Adobe" */ - emit_byte(cinfo, 0x64); - emit_byte(cinfo, 0x6F); - emit_byte(cinfo, 0x62); - emit_byte(cinfo, 0x65); - emit_2bytes(cinfo, 100); /* Version */ - emit_2bytes(cinfo, 0); /* Flags0 */ - emit_2bytes(cinfo, 0); /* Flags1 */ - switch (cinfo->jpeg_color_space) { - case JCS_YCbCr: - emit_byte(cinfo, 1); /* Color transform = 1 */ - break; - case JCS_YCCK: - emit_byte(cinfo, 2); /* Color transform = 2 */ - break; - default: - emit_byte(cinfo, 0); /* Color transform = 0 */ - break; - } -} - - -/* - * These routines allow writing an arbitrary marker with parameters. - * The only intended use is to emit COM or APPn markers after calling - * write_file_header and before calling write_frame_header. - * Other uses are not guaranteed to produce desirable results. - * Counting the parameter bytes properly is the caller's responsibility. - */ - -METHODDEF(void) -write_marker_header (j_compress_ptr cinfo, int marker, unsigned int datalen) -/* Emit an arbitrary marker header */ -{ - if (datalen > (unsigned int) 65533) /* safety check */ - ERREXIT(cinfo, JERR_BAD_LENGTH); - - emit_marker(cinfo, (JPEG_MARKER) marker); - - emit_2bytes(cinfo, (int) (datalen + 2)); /* total length */ -} - -METHODDEF(void) -write_marker_byte (j_compress_ptr cinfo, int val) -/* Emit one byte of marker parameters following write_marker_header */ -{ - emit_byte(cinfo, val); -} - - -/* - * Write datastream header. - * This consists of an SOI and optional APPn markers. - * We recommend use of the JFIF marker, but not the Adobe marker, - * when using YCbCr or grayscale data. The JFIF marker should NOT - * be used for any other JPEG colorspace. The Adobe marker is helpful - * to distinguish RGB, CMYK, and YCCK colorspaces. - * Note that an application can write additional header markers after - * jpeg_start_compress returns. - */ - -METHODDEF(void) -write_file_header (j_compress_ptr cinfo) -{ - my_marker_ptr marker = (my_marker_ptr) cinfo->marker; - - emit_marker(cinfo, M_SOI); /* first the SOI */ - - /* SOI is defined to reset restart interval to 0 */ - marker->last_restart_interval = 0; - - if (cinfo->write_JFIF_header) /* next an optional JFIF APP0 */ - emit_jfif_app0(cinfo); - if (cinfo->write_Adobe_marker) /* next an optional Adobe APP14 */ - emit_adobe_app14(cinfo); -} - - -/* - * Write frame header. - * This consists of DQT and SOFn markers. - * Note that we do not emit the SOF until we have emitted the DQT(s). - * This avoids compatibility problems with incorrect implementations that - * try to error-check the quant table numbers as soon as they see the SOF. - */ - -METHODDEF(void) -write_frame_header (j_compress_ptr cinfo) -{ - int ci, prec; - boolean is_baseline; - jpeg_component_info *compptr; - - /* Emit DQT for each quantization table. - * Note that emit_dqt() suppresses any duplicate tables. - */ - prec = 0; - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - prec += emit_dqt(cinfo, compptr->quant_tbl_no); - } - /* now prec is nonzero iff there are any 16-bit quant tables. */ - - /* Check for a non-baseline specification. - * Note we assume that Huffman table numbers won't be changed later. - */ - if (cinfo->arith_code || cinfo->progressive_mode || - cinfo->data_precision != 8) { - is_baseline = FALSE; - } else { - is_baseline = TRUE; - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - if (compptr->dc_tbl_no > 1 || compptr->ac_tbl_no > 1) - is_baseline = FALSE; - } - if (prec && is_baseline) { - is_baseline = FALSE; - /* If it's baseline except for quantizer size, warn the user */ - TRACEMS(cinfo, 0, JTRC_16BIT_TABLES); - } - } - - /* Emit the proper SOF marker */ - if (cinfo->arith_code) { - emit_sof(cinfo, M_SOF9); /* SOF code for arithmetic coding */ - } else { - if (cinfo->progressive_mode) - emit_sof(cinfo, M_SOF2); /* SOF code for progressive Huffman */ - else if (is_baseline) - emit_sof(cinfo, M_SOF0); /* SOF code for baseline implementation */ - else - emit_sof(cinfo, M_SOF1); /* SOF code for non-baseline Huffman file */ - } -} - - -/* - * Write scan header. - * This consists of DHT or DAC markers, optional DRI, and SOS. - * Compressed data will be written following the SOS. - */ - -METHODDEF(void) -write_scan_header (j_compress_ptr cinfo) -{ - my_marker_ptr marker = (my_marker_ptr) cinfo->marker; - int i; - jpeg_component_info *compptr; - - if (cinfo->arith_code) { - /* Emit arith conditioning info. We may have some duplication - * if the file has multiple scans, but it's so small it's hardly - * worth worrying about. - */ - emit_dac(cinfo); - } else { - /* Emit Huffman tables. - * Note that emit_dht() suppresses any duplicate tables. - */ - for (i = 0; i < cinfo->comps_in_scan; i++) { - compptr = cinfo->cur_comp_info[i]; - if (cinfo->progressive_mode) { - /* Progressive mode: only DC or only AC tables are used in one scan */ - if (cinfo->Ss == 0) { - if (cinfo->Ah == 0) /* DC needs no table for refinement scan */ - emit_dht(cinfo, compptr->dc_tbl_no, FALSE); - } else { - emit_dht(cinfo, compptr->ac_tbl_no, TRUE); - } - } else { - /* Sequential mode: need both DC and AC tables */ - emit_dht(cinfo, compptr->dc_tbl_no, FALSE); - emit_dht(cinfo, compptr->ac_tbl_no, TRUE); - } - } - } - - /* Emit DRI if required --- note that DRI value could change for each scan. - * We avoid wasting space with unnecessary DRIs, however. - */ - if (cinfo->restart_interval != marker->last_restart_interval) { - emit_dri(cinfo); - marker->last_restart_interval = cinfo->restart_interval; - } - - emit_sos(cinfo); -} - - -/* - * Write datastream trailer. - */ - -METHODDEF(void) -write_file_trailer (j_compress_ptr cinfo) -{ - emit_marker(cinfo, M_EOI); -} - - -/* - * Write an abbreviated table-specification datastream. - * This consists of SOI, DQT and DHT tables, and EOI. - * Any table that is defined and not marked sent_table = TRUE will be - * emitted. Note that all tables will be marked sent_table = TRUE at exit. - */ - -METHODDEF(void) -write_tables_only (j_compress_ptr cinfo) -{ - int i; - - emit_marker(cinfo, M_SOI); - - for (i = 0; i < NUM_QUANT_TBLS; i++) { - if (cinfo->quant_tbl_ptrs[i] != NULL) - (void) emit_dqt(cinfo, i); - } - - if (! cinfo->arith_code) { - for (i = 0; i < NUM_HUFF_TBLS; i++) { - if (cinfo->dc_huff_tbl_ptrs[i] != NULL) - emit_dht(cinfo, i, FALSE); - if (cinfo->ac_huff_tbl_ptrs[i] != NULL) - emit_dht(cinfo, i, TRUE); - } - } - - emit_marker(cinfo, M_EOI); -} - - -/* - * Initialize the marker writer module. - */ - -GLOBAL(void) -jinit_marker_writer (j_compress_ptr cinfo) -{ - my_marker_ptr marker; - - /* Create the subobject */ - marker = (my_marker_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_marker_writer)); - cinfo->marker = (struct jpeg_marker_writer *) marker; - /* Initialize method pointers */ - marker->pub.write_file_header = write_file_header; - marker->pub.write_frame_header = write_frame_header; - marker->pub.write_scan_header = write_scan_header; - marker->pub.write_file_trailer = write_file_trailer; - marker->pub.write_tables_only = write_tables_only; - marker->pub.write_marker_header = write_marker_header; - marker->pub.write_marker_byte = write_marker_byte; - /* Initialize private state */ - marker->last_restart_interval = 0; -} diff --git a/project/jni/jpeg/jcmaster.c b/project/jni/jpeg/jcmaster.c deleted file mode 100644 index aab4020b8..000000000 --- a/project/jni/jpeg/jcmaster.c +++ /dev/null @@ -1,590 +0,0 @@ -/* - * jcmaster.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains master control logic for the JPEG compressor. - * These routines are concerned with parameter validation, initial setup, - * and inter-pass control (determining the number of passes and the work - * to be done in each pass). - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Private state */ - -typedef enum { - main_pass, /* input data, also do first output step */ - huff_opt_pass, /* Huffman code optimization pass */ - output_pass /* data output pass */ -} c_pass_type; - -typedef struct { - struct jpeg_comp_master pub; /* public fields */ - - c_pass_type pass_type; /* the type of the current pass */ - - int pass_number; /* # of passes completed */ - int total_passes; /* total # of passes needed */ - - int scan_number; /* current index in scan_info[] */ -} my_comp_master; - -typedef my_comp_master * my_master_ptr; - - -/* - * Support routines that do various essential calculations. - */ - -LOCAL(void) -initial_setup (j_compress_ptr cinfo) -/* Do computations that are needed before master selection phase */ -{ - int ci; - jpeg_component_info *compptr; - long samplesperrow; - JDIMENSION jd_samplesperrow; - - /* Sanity check on image dimensions */ - if (cinfo->image_height <= 0 || cinfo->image_width <= 0 - || cinfo->num_components <= 0 || cinfo->input_components <= 0) - ERREXIT(cinfo, JERR_EMPTY_IMAGE); - - /* Make sure image isn't bigger than I can handle */ - if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION || - (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION) - ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION); - - /* Width of an input scanline must be representable as JDIMENSION. */ - samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components; - jd_samplesperrow = (JDIMENSION) samplesperrow; - if ((long) jd_samplesperrow != samplesperrow) - ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); - - /* For now, precision must match compiled-in value... */ - if (cinfo->data_precision != BITS_IN_JSAMPLE) - ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision); - - /* Check that number of components won't exceed internal array sizes */ - if (cinfo->num_components > MAX_COMPONENTS) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, - MAX_COMPONENTS); - - /* Compute maximum sampling factors; check factor validity */ - cinfo->max_h_samp_factor = 1; - cinfo->max_v_samp_factor = 1; - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR || - compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR) - ERREXIT(cinfo, JERR_BAD_SAMPLING); - cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor, - compptr->h_samp_factor); - cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor, - compptr->v_samp_factor); - } - - /* Compute dimensions of components */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Fill in the correct component_index value; don't rely on application */ - compptr->component_index = ci; - /* For compression, we never do DCT scaling. */ - compptr->DCT_scaled_size = DCTSIZE; - /* Size in DCT blocks */ - compptr->width_in_blocks = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor, - (long) (cinfo->max_h_samp_factor * DCTSIZE)); - compptr->height_in_blocks = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor, - (long) (cinfo->max_v_samp_factor * DCTSIZE)); - /* Size in samples */ - compptr->downsampled_width = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor, - (long) cinfo->max_h_samp_factor); - compptr->downsampled_height = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor, - (long) cinfo->max_v_samp_factor); - /* Mark component needed (this flag isn't actually used for compression) */ - compptr->component_needed = TRUE; - } - - /* Compute number of fully interleaved MCU rows (number of times that - * main controller will call coefficient controller). - */ - cinfo->total_iMCU_rows = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, - (long) (cinfo->max_v_samp_factor*DCTSIZE)); -} - - -#ifdef C_MULTISCAN_FILES_SUPPORTED - -LOCAL(void) -validate_script (j_compress_ptr cinfo) -/* Verify that the scan script in cinfo->scan_info[] is valid; also - * determine whether it uses progressive JPEG, and set cinfo->progressive_mode. - */ -{ - const jpeg_scan_info * scanptr; - int scanno, ncomps, ci, coefi, thisi; - int Ss, Se, Ah, Al; - boolean component_sent[MAX_COMPONENTS]; -#ifdef C_PROGRESSIVE_SUPPORTED - int * last_bitpos_ptr; - int last_bitpos[MAX_COMPONENTS][DCTSIZE2]; - /* -1 until that coefficient has been seen; then last Al for it */ -#endif - - if (cinfo->num_scans <= 0) - ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0); - - /* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1; - * for progressive JPEG, no scan can have this. - */ - scanptr = cinfo->scan_info; - if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE2-1) { -#ifdef C_PROGRESSIVE_SUPPORTED - cinfo->progressive_mode = TRUE; - last_bitpos_ptr = & last_bitpos[0][0]; - for (ci = 0; ci < cinfo->num_components; ci++) - for (coefi = 0; coefi < DCTSIZE2; coefi++) - *last_bitpos_ptr++ = -1; -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else { - cinfo->progressive_mode = FALSE; - for (ci = 0; ci < cinfo->num_components; ci++) - component_sent[ci] = FALSE; - } - - for (scanno = 1; scanno <= cinfo->num_scans; scanptr++, scanno++) { - /* Validate component indexes */ - ncomps = scanptr->comps_in_scan; - if (ncomps <= 0 || ncomps > MAX_COMPS_IN_SCAN) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, ncomps, MAX_COMPS_IN_SCAN); - for (ci = 0; ci < ncomps; ci++) { - thisi = scanptr->component_index[ci]; - if (thisi < 0 || thisi >= cinfo->num_components) - ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno); - /* Components must appear in SOF order within each scan */ - if (ci > 0 && thisi <= scanptr->component_index[ci-1]) - ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno); - } - /* Validate progression parameters */ - Ss = scanptr->Ss; - Se = scanptr->Se; - Ah = scanptr->Ah; - Al = scanptr->Al; - if (cinfo->progressive_mode) { -#ifdef C_PROGRESSIVE_SUPPORTED - /* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that - * seems wrong: the upper bound ought to depend on data precision. - * Perhaps they really meant 0..N+1 for N-bit precision. - * Here we allow 0..10 for 8-bit data; Al larger than 10 results in - * out-of-range reconstructed DC values during the first DC scan, - * which might cause problems for some decoders. - */ -#if BITS_IN_JSAMPLE == 8 -#define MAX_AH_AL 10 -#else -#define MAX_AH_AL 13 -#endif - if (Ss < 0 || Ss >= DCTSIZE2 || Se < Ss || Se >= DCTSIZE2 || - Ah < 0 || Ah > MAX_AH_AL || Al < 0 || Al > MAX_AH_AL) - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - if (Ss == 0) { - if (Se != 0) /* DC and AC together not OK */ - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - } else { - if (ncomps != 1) /* AC scans must be for only one component */ - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - } - for (ci = 0; ci < ncomps; ci++) { - last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0]; - if (Ss != 0 && last_bitpos_ptr[0] < 0) /* AC without prior DC scan */ - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - for (coefi = Ss; coefi <= Se; coefi++) { - if (last_bitpos_ptr[coefi] < 0) { - /* first scan of this coefficient */ - if (Ah != 0) - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - } else { - /* not first scan */ - if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1) - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - } - last_bitpos_ptr[coefi] = Al; - } - } -#endif - } else { - /* For sequential JPEG, all progression parameters must be these: */ - if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0) - ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno); - /* Make sure components are not sent twice */ - for (ci = 0; ci < ncomps; ci++) { - thisi = scanptr->component_index[ci]; - if (component_sent[thisi]) - ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno); - component_sent[thisi] = TRUE; - } - } - } - - /* Now verify that everything got sent. */ - if (cinfo->progressive_mode) { -#ifdef C_PROGRESSIVE_SUPPORTED - /* For progressive mode, we only check that at least some DC data - * got sent for each component; the spec does not require that all bits - * of all coefficients be transmitted. Would it be wiser to enforce - * transmission of all coefficient bits?? - */ - for (ci = 0; ci < cinfo->num_components; ci++) { - if (last_bitpos[ci][0] < 0) - ERREXIT(cinfo, JERR_MISSING_DATA); - } -#endif - } else { - for (ci = 0; ci < cinfo->num_components; ci++) { - if (! component_sent[ci]) - ERREXIT(cinfo, JERR_MISSING_DATA); - } - } -} - -#endif /* C_MULTISCAN_FILES_SUPPORTED */ - - -LOCAL(void) -select_scan_parameters (j_compress_ptr cinfo) -/* Set up the scan parameters for the current scan */ -{ - int ci; - -#ifdef C_MULTISCAN_FILES_SUPPORTED - if (cinfo->scan_info != NULL) { - /* Prepare for current scan --- the script is already validated */ - my_master_ptr master = (my_master_ptr) cinfo->master; - const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number; - - cinfo->comps_in_scan = scanptr->comps_in_scan; - for (ci = 0; ci < scanptr->comps_in_scan; ci++) { - cinfo->cur_comp_info[ci] = - &cinfo->comp_info[scanptr->component_index[ci]]; - } - cinfo->Ss = scanptr->Ss; - cinfo->Se = scanptr->Se; - cinfo->Ah = scanptr->Ah; - cinfo->Al = scanptr->Al; - } - else -#endif - { - /* Prepare for single sequential-JPEG scan containing all components */ - if (cinfo->num_components > MAX_COMPS_IN_SCAN) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, - MAX_COMPS_IN_SCAN); - cinfo->comps_in_scan = cinfo->num_components; - for (ci = 0; ci < cinfo->num_components; ci++) { - cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci]; - } - cinfo->Ss = 0; - cinfo->Se = DCTSIZE2-1; - cinfo->Ah = 0; - cinfo->Al = 0; - } -} - - -LOCAL(void) -per_scan_setup (j_compress_ptr cinfo) -/* Do computations that are needed before processing a JPEG scan */ -/* cinfo->comps_in_scan and cinfo->cur_comp_info[] are already set */ -{ - int ci, mcublks, tmp; - jpeg_component_info *compptr; - - if (cinfo->comps_in_scan == 1) { - - /* Noninterleaved (single-component) scan */ - compptr = cinfo->cur_comp_info[0]; - - /* Overall image size in MCUs */ - cinfo->MCUs_per_row = compptr->width_in_blocks; - cinfo->MCU_rows_in_scan = compptr->height_in_blocks; - - /* For noninterleaved scan, always one block per MCU */ - compptr->MCU_width = 1; - compptr->MCU_height = 1; - compptr->MCU_blocks = 1; - compptr->MCU_sample_width = DCTSIZE; - compptr->last_col_width = 1; - /* For noninterleaved scans, it is convenient to define last_row_height - * as the number of block rows present in the last iMCU row. - */ - tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor); - if (tmp == 0) tmp = compptr->v_samp_factor; - compptr->last_row_height = tmp; - - /* Prepare array describing MCU composition */ - cinfo->blocks_in_MCU = 1; - cinfo->MCU_membership[0] = 0; - - } else { - - /* Interleaved (multi-component) scan */ - if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan, - MAX_COMPS_IN_SCAN); - - /* Overall image size in MCUs */ - cinfo->MCUs_per_row = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width, - (long) (cinfo->max_h_samp_factor*DCTSIZE)); - cinfo->MCU_rows_in_scan = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, - (long) (cinfo->max_v_samp_factor*DCTSIZE)); - - cinfo->blocks_in_MCU = 0; - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - /* Sampling factors give # of blocks of component in each MCU */ - compptr->MCU_width = compptr->h_samp_factor; - compptr->MCU_height = compptr->v_samp_factor; - compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height; - compptr->MCU_sample_width = compptr->MCU_width * DCTSIZE; - /* Figure number of non-dummy blocks in last MCU column & row */ - tmp = (int) (compptr->width_in_blocks % compptr->MCU_width); - if (tmp == 0) tmp = compptr->MCU_width; - compptr->last_col_width = tmp; - tmp = (int) (compptr->height_in_blocks % compptr->MCU_height); - if (tmp == 0) tmp = compptr->MCU_height; - compptr->last_row_height = tmp; - /* Prepare array describing MCU composition */ - mcublks = compptr->MCU_blocks; - if (cinfo->blocks_in_MCU + mcublks > C_MAX_BLOCKS_IN_MCU) - ERREXIT(cinfo, JERR_BAD_MCU_SIZE); - while (mcublks-- > 0) { - cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci; - } - } - - } - - /* Convert restart specified in rows to actual MCU count. */ - /* Note that count must fit in 16 bits, so we provide limiting. */ - if (cinfo->restart_in_rows > 0) { - long nominal = (long) cinfo->restart_in_rows * (long) cinfo->MCUs_per_row; - cinfo->restart_interval = (unsigned int) MIN(nominal, 65535L); - } -} - - -/* - * Per-pass setup. - * This is called at the beginning of each pass. We determine which modules - * will be active during this pass and give them appropriate start_pass calls. - * We also set is_last_pass to indicate whether any more passes will be - * required. - */ - -METHODDEF(void) -prepare_for_pass (j_compress_ptr cinfo) -{ - my_master_ptr master = (my_master_ptr) cinfo->master; - - switch (master->pass_type) { - case main_pass: - /* Initial pass: will collect input data, and do either Huffman - * optimization or data output for the first scan. - */ - select_scan_parameters(cinfo); - per_scan_setup(cinfo); - if (! cinfo->raw_data_in) { - (*cinfo->cconvert->start_pass) (cinfo); - (*cinfo->downsample->start_pass) (cinfo); - (*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU); - } - (*cinfo->fdct->start_pass) (cinfo); - (*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding); - (*cinfo->coef->start_pass) (cinfo, - (master->total_passes > 1 ? - JBUF_SAVE_AND_PASS : JBUF_PASS_THRU)); - (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU); - if (cinfo->optimize_coding) { - /* No immediate data output; postpone writing frame/scan headers */ - master->pub.call_pass_startup = FALSE; - } else { - /* Will write frame/scan headers at first jpeg_write_scanlines call */ - master->pub.call_pass_startup = TRUE; - } - break; -#ifdef ENTROPY_OPT_SUPPORTED - case huff_opt_pass: - /* Do Huffman optimization for a scan after the first one. */ - select_scan_parameters(cinfo); - per_scan_setup(cinfo); - if (cinfo->Ss != 0 || cinfo->Ah == 0 || cinfo->arith_code) { - (*cinfo->entropy->start_pass) (cinfo, TRUE); - (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST); - master->pub.call_pass_startup = FALSE; - break; - } - /* Special case: Huffman DC refinement scans need no Huffman table - * and therefore we can skip the optimization pass for them. - */ - master->pass_type = output_pass; - master->pass_number++; - /*FALLTHROUGH*/ -#endif - case output_pass: - /* Do a data-output pass. */ - /* We need not repeat per-scan setup if prior optimization pass did it. */ - if (! cinfo->optimize_coding) { - select_scan_parameters(cinfo); - per_scan_setup(cinfo); - } - (*cinfo->entropy->start_pass) (cinfo, FALSE); - (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST); - /* We emit frame/scan headers now */ - if (master->scan_number == 0) - (*cinfo->marker->write_frame_header) (cinfo); - (*cinfo->marker->write_scan_header) (cinfo); - master->pub.call_pass_startup = FALSE; - break; - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - } - - master->pub.is_last_pass = (master->pass_number == master->total_passes-1); - - /* Set up progress monitor's pass info if present */ - if (cinfo->progress != NULL) { - cinfo->progress->completed_passes = master->pass_number; - cinfo->progress->total_passes = master->total_passes; - } -} - - -/* - * Special start-of-pass hook. - * This is called by jpeg_write_scanlines if call_pass_startup is TRUE. - * In single-pass processing, we need this hook because we don't want to - * write frame/scan headers during jpeg_start_compress; we want to let the - * application write COM markers etc. between jpeg_start_compress and the - * jpeg_write_scanlines loop. - * In multi-pass processing, this routine is not used. - */ - -METHODDEF(void) -pass_startup (j_compress_ptr cinfo) -{ - cinfo->master->call_pass_startup = FALSE; /* reset flag so call only once */ - - (*cinfo->marker->write_frame_header) (cinfo); - (*cinfo->marker->write_scan_header) (cinfo); -} - - -/* - * Finish up at end of pass. - */ - -METHODDEF(void) -finish_pass_master (j_compress_ptr cinfo) -{ - my_master_ptr master = (my_master_ptr) cinfo->master; - - /* The entropy coder always needs an end-of-pass call, - * either to analyze statistics or to flush its output buffer. - */ - (*cinfo->entropy->finish_pass) (cinfo); - - /* Update state for next pass */ - switch (master->pass_type) { - case main_pass: - /* next pass is either output of scan 0 (after optimization) - * or output of scan 1 (if no optimization). - */ - master->pass_type = output_pass; - if (! cinfo->optimize_coding) - master->scan_number++; - break; - case huff_opt_pass: - /* next pass is always output of current scan */ - master->pass_type = output_pass; - break; - case output_pass: - /* next pass is either optimization or output of next scan */ - if (cinfo->optimize_coding) - master->pass_type = huff_opt_pass; - master->scan_number++; - break; - } - - master->pass_number++; -} - - -/* - * Initialize master compression control. - */ - -GLOBAL(void) -jinit_c_master_control (j_compress_ptr cinfo, boolean transcode_only) -{ - my_master_ptr master; - - master = (my_master_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_comp_master)); - cinfo->master = (struct jpeg_comp_master *) master; - master->pub.prepare_for_pass = prepare_for_pass; - master->pub.pass_startup = pass_startup; - master->pub.finish_pass = finish_pass_master; - master->pub.is_last_pass = FALSE; - - /* Validate parameters, determine derived values */ - initial_setup(cinfo); - - if (cinfo->scan_info != NULL) { -#ifdef C_MULTISCAN_FILES_SUPPORTED - validate_script(cinfo); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else { - cinfo->progressive_mode = FALSE; - cinfo->num_scans = 1; - } - - if (cinfo->progressive_mode) /* TEMPORARY HACK ??? */ - cinfo->optimize_coding = TRUE; /* assume default tables no good for progressive mode */ - - /* Initialize my private state */ - if (transcode_only) { - /* no main pass in transcoding */ - if (cinfo->optimize_coding) - master->pass_type = huff_opt_pass; - else - master->pass_type = output_pass; - } else { - /* for normal compression, first pass is always this type: */ - master->pass_type = main_pass; - } - master->scan_number = 0; - master->pass_number = 0; - if (cinfo->optimize_coding) - master->total_passes = cinfo->num_scans * 2; - else - master->total_passes = cinfo->num_scans; -} diff --git a/project/jni/jpeg/jcomapi.c b/project/jni/jpeg/jcomapi.c deleted file mode 100644 index 9b1fa7568..000000000 --- a/project/jni/jpeg/jcomapi.c +++ /dev/null @@ -1,106 +0,0 @@ -/* - * jcomapi.c - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains application interface routines that are used for both - * compression and decompression. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * Abort processing of a JPEG compression or decompression operation, - * but don't destroy the object itself. - * - * For this, we merely clean up all the nonpermanent memory pools. - * Note that temp files (virtual arrays) are not allowed to belong to - * the permanent pool, so we will be able to close all temp files here. - * Closing a data source or destination, if necessary, is the application's - * responsibility. - */ - -GLOBAL(void) -jpeg_abort (j_common_ptr cinfo) -{ - int pool; - - /* Do nothing if called on a not-initialized or destroyed JPEG object. */ - if (cinfo->mem == NULL) - return; - - /* Releasing pools in reverse order might help avoid fragmentation - * with some (brain-damaged) malloc libraries. - */ - for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) { - (*cinfo->mem->free_pool) (cinfo, pool); - } - - /* Reset overall state for possible reuse of object */ - if (cinfo->is_decompressor) { - cinfo->global_state = DSTATE_START; - /* Try to keep application from accessing now-deleted marker list. - * A bit kludgy to do it here, but this is the most central place. - */ - ((j_decompress_ptr) cinfo)->marker_list = NULL; - } else { - cinfo->global_state = CSTATE_START; - } -} - - -/* - * Destruction of a JPEG object. - * - * Everything gets deallocated except the master jpeg_compress_struct itself - * and the error manager struct. Both of these are supplied by the application - * and must be freed, if necessary, by the application. (Often they are on - * the stack and so don't need to be freed anyway.) - * Closing a data source or destination, if necessary, is the application's - * responsibility. - */ - -GLOBAL(void) -jpeg_destroy (j_common_ptr cinfo) -{ - /* We need only tell the memory manager to release everything. */ - /* NB: mem pointer is NULL if memory mgr failed to initialize. */ - if (cinfo->mem != NULL) - (*cinfo->mem->self_destruct) (cinfo); - cinfo->mem = NULL; /* be safe if jpeg_destroy is called twice */ - cinfo->global_state = 0; /* mark it destroyed */ -} - - -/* - * Convenience routines for allocating quantization and Huffman tables. - * (Would jutils.c be a more reasonable place to put these?) - */ - -GLOBAL(JQUANT_TBL *) -jpeg_alloc_quant_table (j_common_ptr cinfo) -{ - JQUANT_TBL *tbl; - - tbl = (JQUANT_TBL *) - (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JQUANT_TBL)); - tbl->sent_table = FALSE; /* make sure this is false in any new table */ - return tbl; -} - - -GLOBAL(JHUFF_TBL *) -jpeg_alloc_huff_table (j_common_ptr cinfo) -{ - JHUFF_TBL *tbl; - - tbl = (JHUFF_TBL *) - (*cinfo->mem->alloc_small) (cinfo, JPOOL_PERMANENT, SIZEOF(JHUFF_TBL)); - tbl->sent_table = FALSE; /* make sure this is false in any new table */ - return tbl; -} diff --git a/project/jni/jpeg/jconfig.bcc b/project/jni/jpeg/jconfig.bcc deleted file mode 100644 index c6c53ff63..000000000 --- a/project/jni/jpeg/jconfig.bcc +++ /dev/null @@ -1,48 +0,0 @@ -/* jconfig.bcc --- jconfig.h for Borland C (Turbo C) on MS-DOS or OS/2. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#ifdef __MSDOS__ -#define NEED_FAR_POINTERS /* for small or medium memory model */ -#endif -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN /* this assumes you have -w-stu in CFLAGS */ - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#ifdef __MSDOS__ -#define USE_MSDOS_MEMMGR /* Define this if you use jmemdos.c */ -#define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */ -#define USE_FMEM /* Borland has _fmemcpy() and _fmemset() */ -#endif - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE -#define USE_SETMODE /* Borland has setmode() */ -#ifdef __MSDOS__ -#define NEED_SIGNAL_CATCHER /* Define this if you use jmemdos.c */ -#endif -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.cfg b/project/jni/jpeg/jconfig.cfg deleted file mode 100644 index 36a04fa84..000000000 --- a/project/jni/jpeg/jconfig.cfg +++ /dev/null @@ -1,44 +0,0 @@ -/* jconfig.cfg --- source file edited by configure script */ -/* see jconfig.doc for explanations */ - -#undef HAVE_PROTOTYPES -#undef HAVE_UNSIGNED_CHAR -#undef HAVE_UNSIGNED_SHORT -#undef void -#undef const -#undef CHAR_IS_UNSIGNED -#undef HAVE_STDDEF_H -#undef HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS -#undef NEED_SHORT_EXTERNAL_NAMES -/* Define this if you get warnings about undefined structures. */ -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED -#undef INLINE -/* These are for configuring the JPEG memory manager. */ -#undef DEFAULT_MAX_MEM -#undef NO_MKTEMP - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#undef TWO_FILE_COMMANDLINE -#undef NEED_SIGNAL_CATCHER -#undef DONT_USE_B_MODE - -/* Define this if you want percent-done progress reports from cjpeg/djpeg. */ -#undef PROGRESS_REPORT - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.dj b/project/jni/jpeg/jconfig.dj deleted file mode 100644 index f759a9dbd..000000000 --- a/project/jni/jpeg/jconfig.dj +++ /dev/null @@ -1,38 +0,0 @@ -/* jconfig.dj --- jconfig.h for DJGPP (Delorie's GNU C port) on MS-DOS. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS /* DJGPP uses flat 32-bit addressing */ -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#undef TWO_FILE_COMMANDLINE /* optional */ -#define USE_SETMODE /* Needed to make one-file style work in DJGPP */ -#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */ -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.doc b/project/jni/jpeg/jconfig.doc deleted file mode 100644 index c18d1c064..000000000 --- a/project/jni/jpeg/jconfig.doc +++ /dev/null @@ -1,155 +0,0 @@ -/* - * jconfig.doc - * - * Copyright (C) 1991-1994, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file documents the configuration options that are required to - * customize the JPEG software for a particular system. - * - * The actual configuration options for a particular installation are stored - * in jconfig.h. On many machines, jconfig.h can be generated automatically - * or copied from one of the "canned" jconfig files that we supply. But if - * you need to generate a jconfig.h file by hand, this file tells you how. - * - * DO NOT EDIT THIS FILE --- IT WON'T ACCOMPLISH ANYTHING. - * EDIT A COPY NAMED JCONFIG.H. - */ - - -/* - * These symbols indicate the properties of your machine or compiler. - * #define the symbol if yes, #undef it if no. - */ - -/* Does your compiler support function prototypes? - * (If not, you also need to use ansi2knr, see install.doc) - */ -#define HAVE_PROTOTYPES - -/* Does your compiler support the declaration "unsigned char" ? - * How about "unsigned short" ? - */ -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT - -/* Define "void" as "char" if your compiler doesn't know about type void. - * NOTE: be sure to define void such that "void *" represents the most general - * pointer type, e.g., that returned by malloc(). - */ -/* #define void char */ - -/* Define "const" as empty if your compiler doesn't know the "const" keyword. - */ -/* #define const */ - -/* Define this if an ordinary "char" type is unsigned. - * If you're not sure, leaving it undefined will work at some cost in speed. - * If you defined HAVE_UNSIGNED_CHAR then the speed difference is minimal. - */ -#undef CHAR_IS_UNSIGNED - -/* Define this if your system has an ANSI-conforming file. - */ -#define HAVE_STDDEF_H - -/* Define this if your system has an ANSI-conforming file. - */ -#define HAVE_STDLIB_H - -/* Define this if your system does not have an ANSI/SysV , - * but does have a BSD-style . - */ -#undef NEED_BSD_STRINGS - -/* Define this if your system does not provide typedef size_t in any of the - * ANSI-standard places (stddef.h, stdlib.h, or stdio.h), but places it in - * instead. - */ -#undef NEED_SYS_TYPES_H - -/* For 80x86 machines, you need to define NEED_FAR_POINTERS, - * unless you are using a large-data memory model or 80386 flat-memory mode. - * On less brain-damaged CPUs this symbol must not be defined. - * (Defining this symbol causes large data structures to be referenced through - * "far" pointers and to be allocated with a special version of malloc.) - */ -#undef NEED_FAR_POINTERS - -/* Define this if your linker needs global names to be unique in less - * than the first 15 characters. - */ -#undef NEED_SHORT_EXTERNAL_NAMES - -/* Although a real ANSI C compiler can deal perfectly well with pointers to - * unspecified structures (see "incomplete types" in the spec), a few pre-ANSI - * and pseudo-ANSI compilers get confused. To keep one of these bozos happy, - * define INCOMPLETE_TYPES_BROKEN. This is not recommended unless you - * actually get "missing structure definition" warnings or errors while - * compiling the JPEG code. - */ -#undef INCOMPLETE_TYPES_BROKEN - - -/* - * The following options affect code selection within the JPEG library, - * but they don't need to be visible to applications using the library. - * To minimize application namespace pollution, the symbols won't be - * defined unless JPEG_INTERNALS has been defined. - */ - -#ifdef JPEG_INTERNALS - -/* Define this if your compiler implements ">>" on signed values as a logical - * (unsigned) shift; leave it undefined if ">>" is a signed (arithmetic) shift, - * which is the normal and rational definition. - */ -#undef RIGHT_SHIFT_IS_UNSIGNED - - -#endif /* JPEG_INTERNALS */ - - -/* - * The remaining options do not affect the JPEG library proper, - * but only the sample applications cjpeg/djpeg (see cjpeg.c, djpeg.c). - * Other applications can ignore these. - */ - -#ifdef JPEG_CJPEG_DJPEG - -/* These defines indicate which image (non-JPEG) file formats are allowed. */ - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -/* Define this if you want to name both input and output files on the command - * line, rather than using stdout and optionally stdin. You MUST do this if - * your system can't cope with binary I/O to stdin/stdout. See comments at - * head of cjpeg.c or djpeg.c. - */ -#undef TWO_FILE_COMMANDLINE - -/* Define this if your system needs explicit cleanup of temporary files. - * This is crucial under MS-DOS, where the temporary "files" may be areas - * of extended memory; on most other systems it's not as important. - */ -#undef NEED_SIGNAL_CATCHER - -/* By default, we open image files with fopen(...,"rb") or fopen(...,"wb"). - * This is necessary on systems that distinguish text files from binary files, - * and is harmless on most systems that don't. If you have one of the rare - * systems that complains about the "b" spec, define this symbol. - */ -#undef DONT_USE_B_MODE - -/* Define this if you want percent-done progress reports from cjpeg/djpeg. - */ -#undef PROGRESS_REPORT - - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.mac b/project/jni/jpeg/jconfig.mac deleted file mode 100644 index 0de3efe24..000000000 --- a/project/jni/jpeg/jconfig.mac +++ /dev/null @@ -1,43 +0,0 @@ -/* jconfig.mac --- jconfig.h for CodeWarrior on Apple Macintosh */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#define USE_MAC_MEMMGR /* Define this if you use jmemmac.c */ - -#define ALIGN_TYPE long /* Needed for 680x0 Macs */ - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define USE_CCOMMAND /* Command line reader for Macintosh */ -#define TWO_FILE_COMMANDLINE /* Binary I/O thru stdin/stdout doesn't work */ - -#undef NEED_SIGNAL_CATCHER -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.manx b/project/jni/jpeg/jconfig.manx deleted file mode 100644 index 6dd0d008e..000000000 --- a/project/jni/jpeg/jconfig.manx +++ /dev/null @@ -1,43 +0,0 @@ -/* jconfig.manx --- jconfig.h for Amiga systems using Manx Aztec C ver 5.x. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#define TEMP_DIRECTORY "JPEGTMP:" /* recommended setting for Amiga */ - -#define SHORTxSHORT_32 /* produces better DCT code with Aztec C */ - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE -#define NEED_SIGNAL_CATCHER -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#define signal_catcher _abort /* hack for Aztec C naming requirements */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.mc6 b/project/jni/jpeg/jconfig.mc6 deleted file mode 100644 index c55082df4..000000000 --- a/project/jni/jpeg/jconfig.mc6 +++ /dev/null @@ -1,52 +0,0 @@ -/* jconfig.mc6 --- jconfig.h for Microsoft C on MS-DOS, version 6.00A & up. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#define NEED_FAR_POINTERS /* for small or medium memory model */ -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#define USE_MSDOS_MEMMGR /* Define this if you use jmemdos.c */ - -#define MAX_ALLOC_CHUNK 65520L /* Maximum request to malloc() */ - -#define USE_FMEM /* Microsoft has _fmemcpy() and _fmemset() */ - -#define NEED_FHEAPMIN /* far heap management routines are broken */ - -#define SHORTxLCONST_32 /* enable compiler-specific DCT optimization */ -/* Note: the above define is known to improve the code with Microsoft C 6.00A. - * I do not know whether it is good for later compiler versions. - * Please report any info on this point to jpeg-info@uunet.uu.net. - */ - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE -#define USE_SETMODE /* Microsoft has setmode() */ -#define NEED_SIGNAL_CATCHER /* Define this if you use jmemdos.c */ -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.sas b/project/jni/jpeg/jconfig.sas deleted file mode 100644 index efdac2229..000000000 --- a/project/jni/jpeg/jconfig.sas +++ /dev/null @@ -1,43 +0,0 @@ -/* jconfig.sas --- jconfig.h for Amiga systems using SAS C 6.0 and up. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#define TEMP_DIRECTORY "JPEGTMP:" /* recommended setting for Amiga */ - -#define NO_MKTEMP /* SAS C doesn't have mktemp() */ - -#define SHORTxSHORT_32 /* produces better DCT code with SAS C */ - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE -#define NEED_SIGNAL_CATCHER -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.st b/project/jni/jpeg/jconfig.st deleted file mode 100644 index 4421b7a1a..000000000 --- a/project/jni/jpeg/jconfig.st +++ /dev/null @@ -1,42 +0,0 @@ -/* jconfig.st --- jconfig.h for Atari ST/STE/TT using Pure C or Turbo C. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS -#undef NEED_SHORT_EXTERNAL_NAMES -#define INCOMPLETE_TYPES_BROKEN /* suppress undefined-structure warnings */ - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#define ALIGN_TYPE long /* apparently double is a weird size? */ - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE /* optional -- undef if you like Unix style */ -/* Note: if you undef TWO_FILE_COMMANDLINE, you may need to define - * USE_SETMODE. Some Atari compilers require it, some do not. - */ -#define NEED_SIGNAL_CATCHER /* needed if you use jmemname.c */ -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.vc b/project/jni/jpeg/jconfig.vc deleted file mode 100644 index 7e291c75b..000000000 --- a/project/jni/jpeg/jconfig.vc +++ /dev/null @@ -1,45 +0,0 @@ -/* jconfig.vc --- jconfig.h for Microsoft Visual C++ on Windows 95 or NT. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS /* we presume a 32-bit flat memory model */ -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -/* Define "boolean" as unsigned char, not int, per Windows custom */ -#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */ -typedef unsigned char boolean; -#endif -#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */ - - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE /* optional */ -#define USE_SETMODE /* Microsoft has setmode() */ -#undef NEED_SIGNAL_CATCHER -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.vms b/project/jni/jpeg/jconfig.vms deleted file mode 100644 index 55a6ffba5..000000000 --- a/project/jni/jpeg/jconfig.vms +++ /dev/null @@ -1,37 +0,0 @@ -/* jconfig.vms --- jconfig.h for use on Digital VMS. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#undef CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#define TWO_FILE_COMMANDLINE /* Needed on VMS */ -#undef NEED_SIGNAL_CATCHER -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jconfig.wat b/project/jni/jpeg/jconfig.wat deleted file mode 100644 index 6cc545bae..000000000 --- a/project/jni/jpeg/jconfig.wat +++ /dev/null @@ -1,38 +0,0 @@ -/* jconfig.wat --- jconfig.h for Watcom C/C++ on MS-DOS or OS/2. */ -/* see jconfig.doc for explanations */ - -#define HAVE_PROTOTYPES -#define HAVE_UNSIGNED_CHAR -#define HAVE_UNSIGNED_SHORT -/* #define void char */ -/* #define const */ -#define CHAR_IS_UNSIGNED -#define HAVE_STDDEF_H -#define HAVE_STDLIB_H -#undef NEED_BSD_STRINGS -#undef NEED_SYS_TYPES_H -#undef NEED_FAR_POINTERS /* Watcom uses flat 32-bit addressing */ -#undef NEED_SHORT_EXTERNAL_NAMES -#undef INCOMPLETE_TYPES_BROKEN - -#ifdef JPEG_INTERNALS - -#undef RIGHT_SHIFT_IS_UNSIGNED - -#endif /* JPEG_INTERNALS */ - -#ifdef JPEG_CJPEG_DJPEG - -#define BMP_SUPPORTED /* BMP image file format */ -#define GIF_SUPPORTED /* GIF image file format */ -#define PPM_SUPPORTED /* PBMPLUS PPM/PGM image file format */ -#undef RLE_SUPPORTED /* Utah RLE image file format */ -#define TARGA_SUPPORTED /* Targa image file format */ - -#undef TWO_FILE_COMMANDLINE /* optional */ -#define USE_SETMODE /* Needed to make one-file style work in Watcom */ -#undef NEED_SIGNAL_CATCHER /* Define this if you use jmemname.c */ -#undef DONT_USE_B_MODE -#undef PROGRESS_REPORT /* optional */ - -#endif /* JPEG_CJPEG_DJPEG */ diff --git a/project/jni/jpeg/jcparam.c b/project/jni/jpeg/jcparam.c deleted file mode 100644 index 6fc48f536..000000000 --- a/project/jni/jpeg/jcparam.c +++ /dev/null @@ -1,610 +0,0 @@ -/* - * jcparam.c - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains optional default-setting code for the JPEG compressor. - * Applications do not have to use this file, but those that don't use it - * must know a lot more about the innards of the JPEG code. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * Quantization table setup routines - */ - -GLOBAL(void) -jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, - const unsigned int *basic_table, - int scale_factor, boolean force_baseline) -/* Define a quantization table equal to the basic_table times - * a scale factor (given as a percentage). - * If force_baseline is TRUE, the computed quantization table entries - * are limited to 1..255 for JPEG baseline compatibility. - */ -{ - JQUANT_TBL ** qtblptr; - int i; - long temp; - - /* Safety check to ensure start_compress not called yet. */ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - if (which_tbl < 0 || which_tbl >= NUM_QUANT_TBLS) - ERREXIT1(cinfo, JERR_DQT_INDEX, which_tbl); - - qtblptr = & cinfo->quant_tbl_ptrs[which_tbl]; - - if (*qtblptr == NULL) - *qtblptr = jpeg_alloc_quant_table((j_common_ptr) cinfo); - - for (i = 0; i < DCTSIZE2; i++) { - temp = ((long) basic_table[i] * scale_factor + 50L) / 100L; - /* limit the values to the valid range */ - if (temp <= 0L) temp = 1L; - if (temp > 32767L) temp = 32767L; /* max quantizer needed for 12 bits */ - if (force_baseline && temp > 255L) - temp = 255L; /* limit to baseline range if requested */ - (*qtblptr)->quantval[i] = (UINT16) temp; - } - - /* Initialize sent_table FALSE so table will be written to JPEG file. */ - (*qtblptr)->sent_table = FALSE; -} - - -GLOBAL(void) -jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor, - boolean force_baseline) -/* Set or change the 'quality' (quantization) setting, using default tables - * and a straight percentage-scaling quality scale. In most cases it's better - * to use jpeg_set_quality (below); this entry point is provided for - * applications that insist on a linear percentage scaling. - */ -{ - /* These are the sample quantization tables given in JPEG spec section K.1. - * The spec says that the values given produce "good" quality, and - * when divided by 2, "very good" quality. - */ - static const unsigned int std_luminance_quant_tbl[DCTSIZE2] = { - 16, 11, 10, 16, 24, 40, 51, 61, - 12, 12, 14, 19, 26, 58, 60, 55, - 14, 13, 16, 24, 40, 57, 69, 56, - 14, 17, 22, 29, 51, 87, 80, 62, - 18, 22, 37, 56, 68, 109, 103, 77, - 24, 35, 55, 64, 81, 104, 113, 92, - 49, 64, 78, 87, 103, 121, 120, 101, - 72, 92, 95, 98, 112, 100, 103, 99 - }; - static const unsigned int std_chrominance_quant_tbl[DCTSIZE2] = { - 17, 18, 24, 47, 99, 99, 99, 99, - 18, 21, 26, 66, 99, 99, 99, 99, - 24, 26, 56, 99, 99, 99, 99, 99, - 47, 66, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99 - }; - - /* Set up two quantization tables using the specified scaling */ - jpeg_add_quant_table(cinfo, 0, std_luminance_quant_tbl, - scale_factor, force_baseline); - jpeg_add_quant_table(cinfo, 1, std_chrominance_quant_tbl, - scale_factor, force_baseline); -} - - -GLOBAL(int) -jpeg_quality_scaling (int quality) -/* Convert a user-specified quality rating to a percentage scaling factor - * for an underlying quantization table, using our recommended scaling curve. - * The input 'quality' factor should be 0 (terrible) to 100 (very good). - */ -{ - /* Safety limit on quality factor. Convert 0 to 1 to avoid zero divide. */ - if (quality <= 0) quality = 1; - if (quality > 100) quality = 100; - - /* The basic table is used as-is (scaling 100) for a quality of 50. - * Qualities 50..100 are converted to scaling percentage 200 - 2*Q; - * note that at Q=100 the scaling is 0, which will cause jpeg_add_quant_table - * to make all the table entries 1 (hence, minimum quantization loss). - * Qualities 1..50 are converted to scaling percentage 5000/Q. - */ - if (quality < 50) - quality = 5000 / quality; - else - quality = 200 - quality*2; - - return quality; -} - - -GLOBAL(void) -jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline) -/* Set or change the 'quality' (quantization) setting, using default tables. - * This is the standard quality-adjusting entry point for typical user - * interfaces; only those who want detailed control over quantization tables - * would use the preceding three routines directly. - */ -{ - /* Convert user 0-100 rating to percentage scaling */ - quality = jpeg_quality_scaling(quality); - - /* Set up standard quality tables */ - jpeg_set_linear_quality(cinfo, quality, force_baseline); -} - - -/* - * Huffman table setup routines - */ - -LOCAL(void) -add_huff_table (j_compress_ptr cinfo, - JHUFF_TBL **htblptr, const UINT8 *bits, const UINT8 *val) -/* Define a Huffman table */ -{ - int nsymbols, len; - - if (*htblptr == NULL) - *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); - - /* Copy the number-of-symbols-of-each-code-length counts */ - MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits)); - - /* Validate the counts. We do this here mainly so we can copy the right - * number of symbols from the val[] array, without risking marching off - * the end of memory. jchuff.c will do a more thorough test later. - */ - nsymbols = 0; - for (len = 1; len <= 16; len++) - nsymbols += bits[len]; - if (nsymbols < 1 || nsymbols > 256) - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - - MEMCOPY((*htblptr)->huffval, val, nsymbols * SIZEOF(UINT8)); - - /* Initialize sent_table FALSE so table will be written to JPEG file. */ - (*htblptr)->sent_table = FALSE; -} - - -LOCAL(void) -std_huff_tables (j_compress_ptr cinfo) -/* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ -/* IMPORTANT: these are only valid for 8-bit data precision! */ -{ - static const UINT8 bits_dc_luminance[17] = - { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; - static const UINT8 val_dc_luminance[] = - { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; - - static const UINT8 bits_dc_chrominance[17] = - { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; - static const UINT8 val_dc_chrominance[] = - { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; - - static const UINT8 bits_ac_luminance[17] = - { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; - static const UINT8 val_ac_luminance[] = - { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, - 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, - 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, - 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0, - 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, - 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28, - 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, - 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, - 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, - 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, - 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, - 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, - 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, - 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, - 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, - 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5, - 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, - 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2, - 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, - 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, - 0xf9, 0xfa }; - - static const UINT8 bits_ac_chrominance[17] = - { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; - static const UINT8 val_ac_chrominance[] = - { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, - 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, - 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, - 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, - 0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, - 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, - 0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, - 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, - 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, - 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, - 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, - 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, - 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, - 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, - 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, - 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, - 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, - 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, - 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, - 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, - 0xf9, 0xfa }; - - add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[0], - bits_dc_luminance, val_dc_luminance); - add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[0], - bits_ac_luminance, val_ac_luminance); - add_huff_table(cinfo, &cinfo->dc_huff_tbl_ptrs[1], - bits_dc_chrominance, val_dc_chrominance); - add_huff_table(cinfo, &cinfo->ac_huff_tbl_ptrs[1], - bits_ac_chrominance, val_ac_chrominance); -} - - -/* - * Default parameter setup for compression. - * - * Applications that don't choose to use this routine must do their - * own setup of all these parameters. Alternately, you can call this - * to establish defaults and then alter parameters selectively. This - * is the recommended approach since, if we add any new parameters, - * your code will still work (they'll be set to reasonable defaults). - */ - -GLOBAL(void) -jpeg_set_defaults (j_compress_ptr cinfo) -{ - int i; - - /* Safety check to ensure start_compress not called yet. */ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - /* Allocate comp_info array large enough for maximum component count. - * Array is made permanent in case application wants to compress - * multiple images at same param settings. - */ - if (cinfo->comp_info == NULL) - cinfo->comp_info = (jpeg_component_info *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - MAX_COMPONENTS * SIZEOF(jpeg_component_info)); - - /* Initialize everything not dependent on the color space */ - - cinfo->data_precision = BITS_IN_JSAMPLE; - /* Set up two quantization tables using default quality of 75 */ - jpeg_set_quality(cinfo, 75, TRUE); - /* Set up two Huffman tables */ - std_huff_tables(cinfo); - - /* Initialize default arithmetic coding conditioning */ - for (i = 0; i < NUM_ARITH_TBLS; i++) { - cinfo->arith_dc_L[i] = 0; - cinfo->arith_dc_U[i] = 1; - cinfo->arith_ac_K[i] = 5; - } - - /* Default is no multiple-scan output */ - cinfo->scan_info = NULL; - cinfo->num_scans = 0; - - /* Expect normal source image, not raw downsampled data */ - cinfo->raw_data_in = FALSE; - - /* Use Huffman coding, not arithmetic coding, by default */ - cinfo->arith_code = FALSE; - - /* By default, don't do extra passes to optimize entropy coding */ - cinfo->optimize_coding = FALSE; - /* The standard Huffman tables are only valid for 8-bit data precision. - * If the precision is higher, force optimization on so that usable - * tables will be computed. This test can be removed if default tables - * are supplied that are valid for the desired precision. - */ - if (cinfo->data_precision > 8) - cinfo->optimize_coding = TRUE; - - /* By default, use the simpler non-cosited sampling alignment */ - cinfo->CCIR601_sampling = FALSE; - - /* No input smoothing */ - cinfo->smoothing_factor = 0; - - /* DCT algorithm preference */ - cinfo->dct_method = JDCT_DEFAULT; - - /* No restart markers */ - cinfo->restart_interval = 0; - cinfo->restart_in_rows = 0; - - /* Fill in default JFIF marker parameters. Note that whether the marker - * will actually be written is determined by jpeg_set_colorspace. - * - * By default, the library emits JFIF version code 1.01. - * An application that wants to emit JFIF 1.02 extension markers should set - * JFIF_minor_version to 2. We could probably get away with just defaulting - * to 1.02, but there may still be some decoders in use that will complain - * about that; saying 1.01 should minimize compatibility problems. - */ - cinfo->JFIF_major_version = 1; /* Default JFIF version = 1.01 */ - cinfo->JFIF_minor_version = 1; - cinfo->density_unit = 0; /* Pixel size is unknown by default */ - cinfo->X_density = 1; /* Pixel aspect ratio is square by default */ - cinfo->Y_density = 1; - - /* Choose JPEG colorspace based on input space, set defaults accordingly */ - - jpeg_default_colorspace(cinfo); -} - - -/* - * Select an appropriate JPEG colorspace for in_color_space. - */ - -GLOBAL(void) -jpeg_default_colorspace (j_compress_ptr cinfo) -{ - switch (cinfo->in_color_space) { - case JCS_GRAYSCALE: - jpeg_set_colorspace(cinfo, JCS_GRAYSCALE); - break; - case JCS_RGB: - jpeg_set_colorspace(cinfo, JCS_YCbCr); - break; - case JCS_YCbCr: - jpeg_set_colorspace(cinfo, JCS_YCbCr); - break; - case JCS_CMYK: - jpeg_set_colorspace(cinfo, JCS_CMYK); /* By default, no translation */ - break; - case JCS_YCCK: - jpeg_set_colorspace(cinfo, JCS_YCCK); - break; - case JCS_UNKNOWN: - jpeg_set_colorspace(cinfo, JCS_UNKNOWN); - break; - default: - ERREXIT(cinfo, JERR_BAD_IN_COLORSPACE); - } -} - - -/* - * Set the JPEG colorspace, and choose colorspace-dependent default values. - */ - -GLOBAL(void) -jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace) -{ - jpeg_component_info * compptr; - int ci; - -#define SET_COMP(index,id,hsamp,vsamp,quant,dctbl,actbl) \ - (compptr = &cinfo->comp_info[index], \ - compptr->component_id = (id), \ - compptr->h_samp_factor = (hsamp), \ - compptr->v_samp_factor = (vsamp), \ - compptr->quant_tbl_no = (quant), \ - compptr->dc_tbl_no = (dctbl), \ - compptr->ac_tbl_no = (actbl) ) - - /* Safety check to ensure start_compress not called yet. */ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - /* For all colorspaces, we use Q and Huff tables 0 for luminance components, - * tables 1 for chrominance components. - */ - - cinfo->jpeg_color_space = colorspace; - - cinfo->write_JFIF_header = FALSE; /* No marker for non-JFIF colorspaces */ - cinfo->write_Adobe_marker = FALSE; /* write no Adobe marker by default */ - - switch (colorspace) { - case JCS_GRAYSCALE: - cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ - cinfo->num_components = 1; - /* JFIF specifies component ID 1 */ - SET_COMP(0, 1, 1,1, 0, 0,0); - break; - case JCS_RGB: - cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag RGB */ - cinfo->num_components = 3; - SET_COMP(0, 0x52 /* 'R' */, 1,1, 0, 0,0); - SET_COMP(1, 0x47 /* 'G' */, 1,1, 0, 0,0); - SET_COMP(2, 0x42 /* 'B' */, 1,1, 0, 0,0); - break; - case JCS_YCbCr: - cinfo->write_JFIF_header = TRUE; /* Write a JFIF marker */ - cinfo->num_components = 3; - /* JFIF specifies component IDs 1,2,3 */ - /* We default to 2x2 subsamples of chrominance */ - SET_COMP(0, 1, 2,2, 0, 0,0); - SET_COMP(1, 2, 1,1, 1, 1,1); - SET_COMP(2, 3, 1,1, 1, 1,1); - break; - case JCS_CMYK: - cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag CMYK */ - cinfo->num_components = 4; - SET_COMP(0, 0x43 /* 'C' */, 1,1, 0, 0,0); - SET_COMP(1, 0x4D /* 'M' */, 1,1, 0, 0,0); - SET_COMP(2, 0x59 /* 'Y' */, 1,1, 0, 0,0); - SET_COMP(3, 0x4B /* 'K' */, 1,1, 0, 0,0); - break; - case JCS_YCCK: - cinfo->write_Adobe_marker = TRUE; /* write Adobe marker to flag YCCK */ - cinfo->num_components = 4; - SET_COMP(0, 1, 2,2, 0, 0,0); - SET_COMP(1, 2, 1,1, 1, 1,1); - SET_COMP(2, 3, 1,1, 1, 1,1); - SET_COMP(3, 4, 2,2, 0, 0,0); - break; - case JCS_UNKNOWN: - cinfo->num_components = cinfo->input_components; - if (cinfo->num_components < 1 || cinfo->num_components > MAX_COMPONENTS) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, - MAX_COMPONENTS); - for (ci = 0; ci < cinfo->num_components; ci++) { - SET_COMP(ci, ci, 1,1, 0, 0,0); - } - break; - default: - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - } -} - - -#ifdef C_PROGRESSIVE_SUPPORTED - -LOCAL(jpeg_scan_info *) -fill_a_scan (jpeg_scan_info * scanptr, int ci, - int Ss, int Se, int Ah, int Al) -/* Support routine: generate one scan for specified component */ -{ - scanptr->comps_in_scan = 1; - scanptr->component_index[0] = ci; - scanptr->Ss = Ss; - scanptr->Se = Se; - scanptr->Ah = Ah; - scanptr->Al = Al; - scanptr++; - return scanptr; -} - -LOCAL(jpeg_scan_info *) -fill_scans (jpeg_scan_info * scanptr, int ncomps, - int Ss, int Se, int Ah, int Al) -/* Support routine: generate one scan for each component */ -{ - int ci; - - for (ci = 0; ci < ncomps; ci++) { - scanptr->comps_in_scan = 1; - scanptr->component_index[0] = ci; - scanptr->Ss = Ss; - scanptr->Se = Se; - scanptr->Ah = Ah; - scanptr->Al = Al; - scanptr++; - } - return scanptr; -} - -LOCAL(jpeg_scan_info *) -fill_dc_scans (jpeg_scan_info * scanptr, int ncomps, int Ah, int Al) -/* Support routine: generate interleaved DC scan if possible, else N scans */ -{ - int ci; - - if (ncomps <= MAX_COMPS_IN_SCAN) { - /* Single interleaved DC scan */ - scanptr->comps_in_scan = ncomps; - for (ci = 0; ci < ncomps; ci++) - scanptr->component_index[ci] = ci; - scanptr->Ss = scanptr->Se = 0; - scanptr->Ah = Ah; - scanptr->Al = Al; - scanptr++; - } else { - /* Noninterleaved DC scan for each component */ - scanptr = fill_scans(scanptr, ncomps, 0, 0, Ah, Al); - } - return scanptr; -} - - -/* - * Create a recommended progressive-JPEG script. - * cinfo->num_components and cinfo->jpeg_color_space must be correct. - */ - -GLOBAL(void) -jpeg_simple_progression (j_compress_ptr cinfo) -{ - int ncomps = cinfo->num_components; - int nscans; - jpeg_scan_info * scanptr; - - /* Safety check to ensure start_compress not called yet. */ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - /* Figure space needed for script. Calculation must match code below! */ - if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { - /* Custom script for YCbCr color images. */ - nscans = 10; - } else { - /* All-purpose script for other color spaces. */ - if (ncomps > MAX_COMPS_IN_SCAN) - nscans = 6 * ncomps; /* 2 DC + 4 AC scans per component */ - else - nscans = 2 + 4 * ncomps; /* 2 DC scans; 4 AC scans per component */ - } - - /* Allocate space for script. - * We need to put it in the permanent pool in case the application performs - * multiple compressions without changing the settings. To avoid a memory - * leak if jpeg_simple_progression is called repeatedly for the same JPEG - * object, we try to re-use previously allocated space, and we allocate - * enough space to handle YCbCr even if initially asked for grayscale. - */ - if (cinfo->script_space == NULL || cinfo->script_space_size < nscans) { - cinfo->script_space_size = MAX(nscans, 10); - cinfo->script_space = (jpeg_scan_info *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - cinfo->script_space_size * SIZEOF(jpeg_scan_info)); - } - scanptr = cinfo->script_space; - cinfo->scan_info = scanptr; - cinfo->num_scans = nscans; - - if (ncomps == 3 && cinfo->jpeg_color_space == JCS_YCbCr) { - /* Custom script for YCbCr color images. */ - /* Initial DC scan */ - scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); - /* Initial AC scan: get some luma data out in a hurry */ - scanptr = fill_a_scan(scanptr, 0, 1, 5, 0, 2); - /* Chroma data is too small to be worth expending many scans on */ - scanptr = fill_a_scan(scanptr, 2, 1, 63, 0, 1); - scanptr = fill_a_scan(scanptr, 1, 1, 63, 0, 1); - /* Complete spectral selection for luma AC */ - scanptr = fill_a_scan(scanptr, 0, 6, 63, 0, 2); - /* Refine next bit of luma AC */ - scanptr = fill_a_scan(scanptr, 0, 1, 63, 2, 1); - /* Finish DC successive approximation */ - scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); - /* Finish AC successive approximation */ - scanptr = fill_a_scan(scanptr, 2, 1, 63, 1, 0); - scanptr = fill_a_scan(scanptr, 1, 1, 63, 1, 0); - /* Luma bottom bit comes last since it's usually largest scan */ - scanptr = fill_a_scan(scanptr, 0, 1, 63, 1, 0); - } else { - /* All-purpose script for other color spaces. */ - /* Successive approximation first pass */ - scanptr = fill_dc_scans(scanptr, ncomps, 0, 1); - scanptr = fill_scans(scanptr, ncomps, 1, 5, 0, 2); - scanptr = fill_scans(scanptr, ncomps, 6, 63, 0, 2); - /* Successive approximation second pass */ - scanptr = fill_scans(scanptr, ncomps, 1, 63, 2, 1); - /* Successive approximation final pass */ - scanptr = fill_dc_scans(scanptr, ncomps, 1, 0); - scanptr = fill_scans(scanptr, ncomps, 1, 63, 1, 0); - } -} - -#endif /* C_PROGRESSIVE_SUPPORTED */ diff --git a/project/jni/jpeg/jcphuff.c b/project/jni/jpeg/jcphuff.c deleted file mode 100644 index 07f9178b0..000000000 --- a/project/jni/jpeg/jcphuff.c +++ /dev/null @@ -1,833 +0,0 @@ -/* - * jcphuff.c - * - * Copyright (C) 1995-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains Huffman entropy encoding routines for progressive JPEG. - * - * We do not support output suspension in this module, since the library - * currently does not allow multiple-scan files to be written with output - * suspension. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jchuff.h" /* Declarations shared with jchuff.c */ - -#ifdef C_PROGRESSIVE_SUPPORTED - -/* Expanded entropy encoder object for progressive Huffman encoding. */ - -typedef struct { - struct jpeg_entropy_encoder pub; /* public fields */ - - /* Mode flag: TRUE for optimization, FALSE for actual data output */ - boolean gather_statistics; - - /* Bit-level coding status. - * next_output_byte/free_in_buffer are local copies of cinfo->dest fields. - */ - JOCTET * next_output_byte; /* => next byte to write in buffer */ - size_t free_in_buffer; /* # of byte spaces remaining in buffer */ - INT32 put_buffer; /* current bit-accumulation buffer */ - int put_bits; /* # of bits now in it */ - j_compress_ptr cinfo; /* link to cinfo (needed for dump_buffer) */ - - /* Coding status for DC components */ - int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ - - /* Coding status for AC components */ - int ac_tbl_no; /* the table number of the single component */ - unsigned int EOBRUN; /* run length of EOBs */ - unsigned int BE; /* # of buffered correction bits before MCU */ - char * bit_buffer; /* buffer for correction bits (1 per char) */ - /* packing correction bits tightly would save some space but cost time... */ - - unsigned int restarts_to_go; /* MCUs left in this restart interval */ - int next_restart_num; /* next restart number to write (0-7) */ - - /* Pointers to derived tables (these workspaces have image lifespan). - * Since any one scan codes only DC or only AC, we only need one set - * of tables, not one for DC and one for AC. - */ - c_derived_tbl * derived_tbls[NUM_HUFF_TBLS]; - - /* Statistics tables for optimization; again, one set is enough */ - long * count_ptrs[NUM_HUFF_TBLS]; -} phuff_entropy_encoder; - -typedef phuff_entropy_encoder * phuff_entropy_ptr; - -/* MAX_CORR_BITS is the number of bits the AC refinement correction-bit - * buffer can hold. Larger sizes may slightly improve compression, but - * 1000 is already well into the realm of overkill. - * The minimum safe size is 64 bits. - */ - -#define MAX_CORR_BITS 1000 /* Max # of correction bits I can buffer */ - -/* IRIGHT_SHIFT is like RIGHT_SHIFT, but works on int rather than INT32. - * We assume that int right shift is unsigned if INT32 right shift is, - * which should be safe. - */ - -#ifdef RIGHT_SHIFT_IS_UNSIGNED -#define ISHIFT_TEMPS int ishift_temp; -#define IRIGHT_SHIFT(x,shft) \ - ((ishift_temp = (x)) < 0 ? \ - (ishift_temp >> (shft)) | ((~0) << (16-(shft))) : \ - (ishift_temp >> (shft))) -#else -#define ISHIFT_TEMPS -#define IRIGHT_SHIFT(x,shft) ((x) >> (shft)) -#endif - -/* Forward declarations */ -METHODDEF(boolean) encode_mcu_DC_first JPP((j_compress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(boolean) encode_mcu_AC_first JPP((j_compress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(boolean) encode_mcu_DC_refine JPP((j_compress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(boolean) encode_mcu_AC_refine JPP((j_compress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(void) finish_pass_phuff JPP((j_compress_ptr cinfo)); -METHODDEF(void) finish_pass_gather_phuff JPP((j_compress_ptr cinfo)); - - -/* - * Initialize for a Huffman-compressed scan using progressive JPEG. - */ - -METHODDEF(void) -start_pass_phuff (j_compress_ptr cinfo, boolean gather_statistics) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - boolean is_DC_band; - int ci, tbl; - jpeg_component_info * compptr; - - entropy->cinfo = cinfo; - entropy->gather_statistics = gather_statistics; - - is_DC_band = (cinfo->Ss == 0); - - /* We assume jcmaster.c already validated the scan parameters. */ - - /* Select execution routines */ - if (cinfo->Ah == 0) { - if (is_DC_band) - entropy->pub.encode_mcu = encode_mcu_DC_first; - else - entropy->pub.encode_mcu = encode_mcu_AC_first; - } else { - if (is_DC_band) - entropy->pub.encode_mcu = encode_mcu_DC_refine; - else { - entropy->pub.encode_mcu = encode_mcu_AC_refine; - /* AC refinement needs a correction bit buffer */ - if (entropy->bit_buffer == NULL) - entropy->bit_buffer = (char *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - MAX_CORR_BITS * SIZEOF(char)); - } - } - if (gather_statistics) - entropy->pub.finish_pass = finish_pass_gather_phuff; - else - entropy->pub.finish_pass = finish_pass_phuff; - - /* Only DC coefficients may be interleaved, so cinfo->comps_in_scan = 1 - * for AC coefficients. - */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - /* Initialize DC predictions to 0 */ - entropy->last_dc_val[ci] = 0; - /* Get table index */ - if (is_DC_band) { - if (cinfo->Ah != 0) /* DC refinement needs no table */ - continue; - tbl = compptr->dc_tbl_no; - } else { - entropy->ac_tbl_no = tbl = compptr->ac_tbl_no; - } - if (gather_statistics) { - /* Check for invalid table index */ - /* (make_c_derived_tbl does this in the other path) */ - if (tbl < 0 || tbl >= NUM_HUFF_TBLS) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tbl); - /* Allocate and zero the statistics tables */ - /* Note that jpeg_gen_optimal_table expects 257 entries in each table! */ - if (entropy->count_ptrs[tbl] == NULL) - entropy->count_ptrs[tbl] = (long *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - 257 * SIZEOF(long)); - MEMZERO(entropy->count_ptrs[tbl], 257 * SIZEOF(long)); - } else { - /* Compute derived values for Huffman table */ - /* We may do this more than once for a table, but it's not expensive */ - jpeg_make_c_derived_tbl(cinfo, is_DC_band, tbl, - & entropy->derived_tbls[tbl]); - } - } - - /* Initialize AC stuff */ - entropy->EOBRUN = 0; - entropy->BE = 0; - - /* Initialize bit buffer to empty */ - entropy->put_buffer = 0; - entropy->put_bits = 0; - - /* Initialize restart stuff */ - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num = 0; -} - - -/* Outputting bytes to the file. - * NB: these must be called only when actually outputting, - * that is, entropy->gather_statistics == FALSE. - */ - -/* Emit a byte */ -#define emit_byte(entropy,val) \ - { *(entropy)->next_output_byte++ = (JOCTET) (val); \ - if (--(entropy)->free_in_buffer == 0) \ - dump_buffer(entropy); } - - -LOCAL(void) -dump_buffer (phuff_entropy_ptr entropy) -/* Empty the output buffer; we do not support suspension in this module. */ -{ - struct jpeg_destination_mgr * dest = entropy->cinfo->dest; - - if (! (*dest->empty_output_buffer) (entropy->cinfo)) - ERREXIT(entropy->cinfo, JERR_CANT_SUSPEND); - /* After a successful buffer dump, must reset buffer pointers */ - entropy->next_output_byte = dest->next_output_byte; - entropy->free_in_buffer = dest->free_in_buffer; -} - - -/* Outputting bits to the file */ - -/* Only the right 24 bits of put_buffer are used; the valid bits are - * left-justified in this part. At most 16 bits can be passed to emit_bits - * in one call, and we never retain more than 7 bits in put_buffer - * between calls, so 24 bits are sufficient. - */ - -INLINE -LOCAL(void) -emit_bits (phuff_entropy_ptr entropy, unsigned int code, int size) -/* Emit some bits, unless we are in gather mode */ -{ - /* This routine is heavily used, so it's worth coding tightly. */ - register INT32 put_buffer = (INT32) code; - register int put_bits = entropy->put_bits; - - /* if size is 0, caller used an invalid Huffman table entry */ - if (size == 0) - ERREXIT(entropy->cinfo, JERR_HUFF_MISSING_CODE); - - if (entropy->gather_statistics) - return; /* do nothing if we're only getting stats */ - - put_buffer &= (((INT32) 1)<put_buffer; /* and merge with old buffer contents */ - - while (put_bits >= 8) { - int c = (int) ((put_buffer >> 16) & 0xFF); - - emit_byte(entropy, c); - if (c == 0xFF) { /* need to stuff a zero byte? */ - emit_byte(entropy, 0); - } - put_buffer <<= 8; - put_bits -= 8; - } - - entropy->put_buffer = put_buffer; /* update variables */ - entropy->put_bits = put_bits; -} - - -LOCAL(void) -flush_bits (phuff_entropy_ptr entropy) -{ - emit_bits(entropy, 0x7F, 7); /* fill any partial byte with ones */ - entropy->put_buffer = 0; /* and reset bit-buffer to empty */ - entropy->put_bits = 0; -} - - -/* - * Emit (or just count) a Huffman symbol. - */ - -INLINE -LOCAL(void) -emit_symbol (phuff_entropy_ptr entropy, int tbl_no, int symbol) -{ - if (entropy->gather_statistics) - entropy->count_ptrs[tbl_no][symbol]++; - else { - c_derived_tbl * tbl = entropy->derived_tbls[tbl_no]; - emit_bits(entropy, tbl->ehufco[symbol], tbl->ehufsi[symbol]); - } -} - - -/* - * Emit bits from a correction bit buffer. - */ - -LOCAL(void) -emit_buffered_bits (phuff_entropy_ptr entropy, char * bufstart, - unsigned int nbits) -{ - if (entropy->gather_statistics) - return; /* no real work */ - - while (nbits > 0) { - emit_bits(entropy, (unsigned int) (*bufstart), 1); - bufstart++; - nbits--; - } -} - - -/* - * Emit any pending EOBRUN symbol. - */ - -LOCAL(void) -emit_eobrun (phuff_entropy_ptr entropy) -{ - register int temp, nbits; - - if (entropy->EOBRUN > 0) { /* if there is any pending EOBRUN */ - temp = entropy->EOBRUN; - nbits = 0; - while ((temp >>= 1)) - nbits++; - /* safety check: shouldn't happen given limited correction-bit buffer */ - if (nbits > 14) - ERREXIT(entropy->cinfo, JERR_HUFF_MISSING_CODE); - - emit_symbol(entropy, entropy->ac_tbl_no, nbits << 4); - if (nbits) - emit_bits(entropy, entropy->EOBRUN, nbits); - - entropy->EOBRUN = 0; - - /* Emit any buffered correction bits */ - emit_buffered_bits(entropy, entropy->bit_buffer, entropy->BE); - entropy->BE = 0; - } -} - - -/* - * Emit a restart marker & resynchronize predictions. - */ - -LOCAL(void) -emit_restart (phuff_entropy_ptr entropy, int restart_num) -{ - int ci; - - emit_eobrun(entropy); - - if (! entropy->gather_statistics) { - flush_bits(entropy); - emit_byte(entropy, 0xFF); - emit_byte(entropy, JPEG_RST0 + restart_num); - } - - if (entropy->cinfo->Ss == 0) { - /* Re-initialize DC predictions to 0 */ - for (ci = 0; ci < entropy->cinfo->comps_in_scan; ci++) - entropy->last_dc_val[ci] = 0; - } else { - /* Re-initialize all AC-related fields to 0 */ - entropy->EOBRUN = 0; - entropy->BE = 0; - } -} - - -/* - * MCU encoding for DC initial scan (either spectral selection, - * or first pass of successive approximation). - */ - -METHODDEF(boolean) -encode_mcu_DC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - register int temp, temp2; - register int nbits; - int blkn, ci; - int Al = cinfo->Al; - JBLOCKROW block; - jpeg_component_info * compptr; - ISHIFT_TEMPS - - entropy->next_output_byte = cinfo->dest->next_output_byte; - entropy->free_in_buffer = cinfo->dest->free_in_buffer; - - /* Emit restart marker if needed */ - if (cinfo->restart_interval) - if (entropy->restarts_to_go == 0) - emit_restart(entropy, entropy->next_restart_num); - - /* Encode the MCU data blocks */ - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - block = MCU_data[blkn]; - ci = cinfo->MCU_membership[blkn]; - compptr = cinfo->cur_comp_info[ci]; - - /* Compute the DC value after the required point transform by Al. - * This is simply an arithmetic right shift. - */ - temp2 = IRIGHT_SHIFT((int) ((*block)[0]), Al); - - /* DC differences are figured on the point-transformed values. */ - temp = temp2 - entropy->last_dc_val[ci]; - entropy->last_dc_val[ci] = temp2; - - /* Encode the DC coefficient difference per section G.1.2.1 */ - temp2 = temp; - if (temp < 0) { - temp = -temp; /* temp is abs value of input */ - /* For a negative input, want temp2 = bitwise complement of abs(input) */ - /* This code assumes we are on a two's complement machine */ - temp2--; - } - - /* Find the number of bits needed for the magnitude of the coefficient */ - nbits = 0; - while (temp) { - nbits++; - temp >>= 1; - } - /* Check for out-of-range coefficient values. - * Since we're encoding a difference, the range limit is twice as much. - */ - if (nbits > MAX_COEF_BITS+1) - ERREXIT(cinfo, JERR_BAD_DCT_COEF); - - /* Count/emit the Huffman-coded symbol for the number of bits */ - emit_symbol(entropy, compptr->dc_tbl_no, nbits); - - /* Emit that number of bits of the value, if positive, */ - /* or the complement of its magnitude, if negative. */ - if (nbits) /* emit_bits rejects calls with size 0 */ - emit_bits(entropy, (unsigned int) temp2, nbits); - } - - cinfo->dest->next_output_byte = entropy->next_output_byte; - cinfo->dest->free_in_buffer = entropy->free_in_buffer; - - /* Update restart-interval state too */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) { - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num++; - entropy->next_restart_num &= 7; - } - entropy->restarts_to_go--; - } - - return TRUE; -} - - -/* - * MCU encoding for AC initial scan (either spectral selection, - * or first pass of successive approximation). - */ - -METHODDEF(boolean) -encode_mcu_AC_first (j_compress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - register int temp, temp2; - register int nbits; - register int r, k; - int Se = cinfo->Se; - int Al = cinfo->Al; - JBLOCKROW block; - - entropy->next_output_byte = cinfo->dest->next_output_byte; - entropy->free_in_buffer = cinfo->dest->free_in_buffer; - - /* Emit restart marker if needed */ - if (cinfo->restart_interval) - if (entropy->restarts_to_go == 0) - emit_restart(entropy, entropy->next_restart_num); - - /* Encode the MCU data block */ - block = MCU_data[0]; - - /* Encode the AC coefficients per section G.1.2.2, fig. G.3 */ - - r = 0; /* r = run length of zeros */ - - for (k = cinfo->Ss; k <= Se; k++) { - if ((temp = (*block)[jpeg_natural_order[k]]) == 0) { - r++; - continue; - } - /* We must apply the point transform by Al. For AC coefficients this - * is an integer division with rounding towards 0. To do this portably - * in C, we shift after obtaining the absolute value; so the code is - * interwoven with finding the abs value (temp) and output bits (temp2). - */ - if (temp < 0) { - temp = -temp; /* temp is abs value of input */ - temp >>= Al; /* apply the point transform */ - /* For a negative coef, want temp2 = bitwise complement of abs(coef) */ - temp2 = ~temp; - } else { - temp >>= Al; /* apply the point transform */ - temp2 = temp; - } - /* Watch out for case that nonzero coef is zero after point transform */ - if (temp == 0) { - r++; - continue; - } - - /* Emit any pending EOBRUN */ - if (entropy->EOBRUN > 0) - emit_eobrun(entropy); - /* if run length > 15, must emit special run-length-16 codes (0xF0) */ - while (r > 15) { - emit_symbol(entropy, entropy->ac_tbl_no, 0xF0); - r -= 16; - } - - /* Find the number of bits needed for the magnitude of the coefficient */ - nbits = 1; /* there must be at least one 1 bit */ - while ((temp >>= 1)) - nbits++; - /* Check for out-of-range coefficient values */ - if (nbits > MAX_COEF_BITS) - ERREXIT(cinfo, JERR_BAD_DCT_COEF); - - /* Count/emit Huffman symbol for run length / number of bits */ - emit_symbol(entropy, entropy->ac_tbl_no, (r << 4) + nbits); - - /* Emit that number of bits of the value, if positive, */ - /* or the complement of its magnitude, if negative. */ - emit_bits(entropy, (unsigned int) temp2, nbits); - - r = 0; /* reset zero run length */ - } - - if (r > 0) { /* If there are trailing zeroes, */ - entropy->EOBRUN++; /* count an EOB */ - if (entropy->EOBRUN == 0x7FFF) - emit_eobrun(entropy); /* force it out to avoid overflow */ - } - - cinfo->dest->next_output_byte = entropy->next_output_byte; - cinfo->dest->free_in_buffer = entropy->free_in_buffer; - - /* Update restart-interval state too */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) { - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num++; - entropy->next_restart_num &= 7; - } - entropy->restarts_to_go--; - } - - return TRUE; -} - - -/* - * MCU encoding for DC successive approximation refinement scan. - * Note: we assume such scans can be multi-component, although the spec - * is not very clear on the point. - */ - -METHODDEF(boolean) -encode_mcu_DC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - register int temp; - int blkn; - int Al = cinfo->Al; - JBLOCKROW block; - - entropy->next_output_byte = cinfo->dest->next_output_byte; - entropy->free_in_buffer = cinfo->dest->free_in_buffer; - - /* Emit restart marker if needed */ - if (cinfo->restart_interval) - if (entropy->restarts_to_go == 0) - emit_restart(entropy, entropy->next_restart_num); - - /* Encode the MCU data blocks */ - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - block = MCU_data[blkn]; - - /* We simply emit the Al'th bit of the DC coefficient value. */ - temp = (*block)[0]; - emit_bits(entropy, (unsigned int) (temp >> Al), 1); - } - - cinfo->dest->next_output_byte = entropy->next_output_byte; - cinfo->dest->free_in_buffer = entropy->free_in_buffer; - - /* Update restart-interval state too */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) { - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num++; - entropy->next_restart_num &= 7; - } - entropy->restarts_to_go--; - } - - return TRUE; -} - - -/* - * MCU encoding for AC successive approximation refinement scan. - */ - -METHODDEF(boolean) -encode_mcu_AC_refine (j_compress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - register int temp; - register int r, k; - int EOB; - char *BR_buffer; - unsigned int BR; - int Se = cinfo->Se; - int Al = cinfo->Al; - JBLOCKROW block; - int absvalues[DCTSIZE2]; - - entropy->next_output_byte = cinfo->dest->next_output_byte; - entropy->free_in_buffer = cinfo->dest->free_in_buffer; - - /* Emit restart marker if needed */ - if (cinfo->restart_interval) - if (entropy->restarts_to_go == 0) - emit_restart(entropy, entropy->next_restart_num); - - /* Encode the MCU data block */ - block = MCU_data[0]; - - /* It is convenient to make a pre-pass to determine the transformed - * coefficients' absolute values and the EOB position. - */ - EOB = 0; - for (k = cinfo->Ss; k <= Se; k++) { - temp = (*block)[jpeg_natural_order[k]]; - /* We must apply the point transform by Al. For AC coefficients this - * is an integer division with rounding towards 0. To do this portably - * in C, we shift after obtaining the absolute value. - */ - if (temp < 0) - temp = -temp; /* temp is abs value of input */ - temp >>= Al; /* apply the point transform */ - absvalues[k] = temp; /* save abs value for main pass */ - if (temp == 1) - EOB = k; /* EOB = index of last newly-nonzero coef */ - } - - /* Encode the AC coefficients per section G.1.2.3, fig. G.7 */ - - r = 0; /* r = run length of zeros */ - BR = 0; /* BR = count of buffered bits added now */ - BR_buffer = entropy->bit_buffer + entropy->BE; /* Append bits to buffer */ - - for (k = cinfo->Ss; k <= Se; k++) { - if ((temp = absvalues[k]) == 0) { - r++; - continue; - } - - /* Emit any required ZRLs, but not if they can be folded into EOB */ - while (r > 15 && k <= EOB) { - /* emit any pending EOBRUN and the BE correction bits */ - emit_eobrun(entropy); - /* Emit ZRL */ - emit_symbol(entropy, entropy->ac_tbl_no, 0xF0); - r -= 16; - /* Emit buffered correction bits that must be associated with ZRL */ - emit_buffered_bits(entropy, BR_buffer, BR); - BR_buffer = entropy->bit_buffer; /* BE bits are gone now */ - BR = 0; - } - - /* If the coef was previously nonzero, it only needs a correction bit. - * NOTE: a straight translation of the spec's figure G.7 would suggest - * that we also need to test r > 15. But if r > 15, we can only get here - * if k > EOB, which implies that this coefficient is not 1. - */ - if (temp > 1) { - /* The correction bit is the next bit of the absolute value. */ - BR_buffer[BR++] = (char) (temp & 1); - continue; - } - - /* Emit any pending EOBRUN and the BE correction bits */ - emit_eobrun(entropy); - - /* Count/emit Huffman symbol for run length / number of bits */ - emit_symbol(entropy, entropy->ac_tbl_no, (r << 4) + 1); - - /* Emit output bit for newly-nonzero coef */ - temp = ((*block)[jpeg_natural_order[k]] < 0) ? 0 : 1; - emit_bits(entropy, (unsigned int) temp, 1); - - /* Emit buffered correction bits that must be associated with this code */ - emit_buffered_bits(entropy, BR_buffer, BR); - BR_buffer = entropy->bit_buffer; /* BE bits are gone now */ - BR = 0; - r = 0; /* reset zero run length */ - } - - if (r > 0 || BR > 0) { /* If there are trailing zeroes, */ - entropy->EOBRUN++; /* count an EOB */ - entropy->BE += BR; /* concat my correction bits to older ones */ - /* We force out the EOB if we risk either: - * 1. overflow of the EOB counter; - * 2. overflow of the correction bit buffer during the next MCU. - */ - if (entropy->EOBRUN == 0x7FFF || entropy->BE > (MAX_CORR_BITS-DCTSIZE2+1)) - emit_eobrun(entropy); - } - - cinfo->dest->next_output_byte = entropy->next_output_byte; - cinfo->dest->free_in_buffer = entropy->free_in_buffer; - - /* Update restart-interval state too */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) { - entropy->restarts_to_go = cinfo->restart_interval; - entropy->next_restart_num++; - entropy->next_restart_num &= 7; - } - entropy->restarts_to_go--; - } - - return TRUE; -} - - -/* - * Finish up at the end of a Huffman-compressed progressive scan. - */ - -METHODDEF(void) -finish_pass_phuff (j_compress_ptr cinfo) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - - entropy->next_output_byte = cinfo->dest->next_output_byte; - entropy->free_in_buffer = cinfo->dest->free_in_buffer; - - /* Flush out any buffered data */ - emit_eobrun(entropy); - flush_bits(entropy); - - cinfo->dest->next_output_byte = entropy->next_output_byte; - cinfo->dest->free_in_buffer = entropy->free_in_buffer; -} - - -/* - * Finish up a statistics-gathering pass and create the new Huffman tables. - */ - -METHODDEF(void) -finish_pass_gather_phuff (j_compress_ptr cinfo) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - boolean is_DC_band; - int ci, tbl; - jpeg_component_info * compptr; - JHUFF_TBL **htblptr; - boolean did[NUM_HUFF_TBLS]; - - /* Flush out buffered data (all we care about is counting the EOB symbol) */ - emit_eobrun(entropy); - - is_DC_band = (cinfo->Ss == 0); - - /* It's important not to apply jpeg_gen_optimal_table more than once - * per table, because it clobbers the input frequency counts! - */ - MEMZERO(did, SIZEOF(did)); - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - if (is_DC_band) { - if (cinfo->Ah != 0) /* DC refinement needs no table */ - continue; - tbl = compptr->dc_tbl_no; - } else { - tbl = compptr->ac_tbl_no; - } - if (! did[tbl]) { - if (is_DC_band) - htblptr = & cinfo->dc_huff_tbl_ptrs[tbl]; - else - htblptr = & cinfo->ac_huff_tbl_ptrs[tbl]; - if (*htblptr == NULL) - *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); - jpeg_gen_optimal_table(cinfo, *htblptr, entropy->count_ptrs[tbl]); - did[tbl] = TRUE; - } - } -} - - -/* - * Module initialization routine for progressive Huffman entropy encoding. - */ - -GLOBAL(void) -jinit_phuff_encoder (j_compress_ptr cinfo) -{ - phuff_entropy_ptr entropy; - int i; - - entropy = (phuff_entropy_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(phuff_entropy_encoder)); - cinfo->entropy = (struct jpeg_entropy_encoder *) entropy; - entropy->pub.start_pass = start_pass_phuff; - - /* Mark tables unallocated */ - for (i = 0; i < NUM_HUFF_TBLS; i++) { - entropy->derived_tbls[i] = NULL; - entropy->count_ptrs[i] = NULL; - } - entropy->bit_buffer = NULL; /* needed only in AC refinement scan */ -} - -#endif /* C_PROGRESSIVE_SUPPORTED */ diff --git a/project/jni/jpeg/jcprepct.c b/project/jni/jpeg/jcprepct.c deleted file mode 100644 index fa93333db..000000000 --- a/project/jni/jpeg/jcprepct.c +++ /dev/null @@ -1,354 +0,0 @@ -/* - * jcprepct.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the compression preprocessing controller. - * This controller manages the color conversion, downsampling, - * and edge expansion steps. - * - * Most of the complexity here is associated with buffering input rows - * as required by the downsampler. See the comments at the head of - * jcsample.c for the downsampler's needs. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* At present, jcsample.c can request context rows only for smoothing. - * In the future, we might also need context rows for CCIR601 sampling - * or other more-complex downsampling procedures. The code to support - * context rows should be compiled only if needed. - */ -#ifdef INPUT_SMOOTHING_SUPPORTED -#define CONTEXT_ROWS_SUPPORTED -#endif - - -/* - * For the simple (no-context-row) case, we just need to buffer one - * row group's worth of pixels for the downsampling step. At the bottom of - * the image, we pad to a full row group by replicating the last pixel row. - * The downsampler's last output row is then replicated if needed to pad - * out to a full iMCU row. - * - * When providing context rows, we must buffer three row groups' worth of - * pixels. Three row groups are physically allocated, but the row pointer - * arrays are made five row groups high, with the extra pointers above and - * below "wrapping around" to point to the last and first real row groups. - * This allows the downsampler to access the proper context rows. - * At the top and bottom of the image, we create dummy context rows by - * copying the first or last real pixel row. This copying could be avoided - * by pointer hacking as is done in jdmainct.c, but it doesn't seem worth the - * trouble on the compression side. - */ - - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_c_prep_controller pub; /* public fields */ - - /* Downsampling input buffer. This buffer holds color-converted data - * until we have enough to do a downsample step. - */ - JSAMPARRAY color_buf[MAX_COMPONENTS]; - - JDIMENSION rows_to_go; /* counts rows remaining in source image */ - int next_buf_row; /* index of next row to store in color_buf */ - -#ifdef CONTEXT_ROWS_SUPPORTED /* only needed for context case */ - int this_row_group; /* starting row index of group to process */ - int next_buf_stop; /* downsample when we reach this index */ -#endif -} my_prep_controller; - -typedef my_prep_controller * my_prep_ptr; - - -/* - * Initialize for a processing pass. - */ - -METHODDEF(void) -start_pass_prep (j_compress_ptr cinfo, J_BUF_MODE pass_mode) -{ - my_prep_ptr prep = (my_prep_ptr) cinfo->prep; - - if (pass_mode != JBUF_PASS_THRU) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - - /* Initialize total-height counter for detecting bottom of image */ - prep->rows_to_go = cinfo->image_height; - /* Mark the conversion buffer empty */ - prep->next_buf_row = 0; -#ifdef CONTEXT_ROWS_SUPPORTED - /* Preset additional state variables for context mode. - * These aren't used in non-context mode, so we needn't test which mode. - */ - prep->this_row_group = 0; - /* Set next_buf_stop to stop after two row groups have been read in. */ - prep->next_buf_stop = 2 * cinfo->max_v_samp_factor; -#endif -} - - -/* - * Expand an image vertically from height input_rows to height output_rows, - * by duplicating the bottom row. - */ - -LOCAL(void) -expand_bottom_edge (JSAMPARRAY image_data, JDIMENSION num_cols, - int input_rows, int output_rows) -{ - register int row; - - for (row = input_rows; row < output_rows; row++) { - jcopy_sample_rows(image_data, input_rows-1, image_data, row, - 1, num_cols); - } -} - - -/* - * Process some data in the simple no-context case. - * - * Preprocessor output data is counted in "row groups". A row group - * is defined to be v_samp_factor sample rows of each component. - * Downsampling will produce this much data from each max_v_samp_factor - * input rows. - */ - -METHODDEF(void) -pre_process_data (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail, - JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, - JDIMENSION out_row_groups_avail) -{ - my_prep_ptr prep = (my_prep_ptr) cinfo->prep; - int numrows, ci; - JDIMENSION inrows; - jpeg_component_info * compptr; - - while (*in_row_ctr < in_rows_avail && - *out_row_group_ctr < out_row_groups_avail) { - /* Do color conversion to fill the conversion buffer. */ - inrows = in_rows_avail - *in_row_ctr; - numrows = cinfo->max_v_samp_factor - prep->next_buf_row; - numrows = (int) MIN((JDIMENSION) numrows, inrows); - (*cinfo->cconvert->color_convert) (cinfo, input_buf + *in_row_ctr, - prep->color_buf, - (JDIMENSION) prep->next_buf_row, - numrows); - *in_row_ctr += numrows; - prep->next_buf_row += numrows; - prep->rows_to_go -= numrows; - /* If at bottom of image, pad to fill the conversion buffer. */ - if (prep->rows_to_go == 0 && - prep->next_buf_row < cinfo->max_v_samp_factor) { - for (ci = 0; ci < cinfo->num_components; ci++) { - expand_bottom_edge(prep->color_buf[ci], cinfo->image_width, - prep->next_buf_row, cinfo->max_v_samp_factor); - } - prep->next_buf_row = cinfo->max_v_samp_factor; - } - /* If we've filled the conversion buffer, empty it. */ - if (prep->next_buf_row == cinfo->max_v_samp_factor) { - (*cinfo->downsample->downsample) (cinfo, - prep->color_buf, (JDIMENSION) 0, - output_buf, *out_row_group_ctr); - prep->next_buf_row = 0; - (*out_row_group_ctr)++; - } - /* If at bottom of image, pad the output to a full iMCU height. - * Note we assume the caller is providing a one-iMCU-height output buffer! - */ - if (prep->rows_to_go == 0 && - *out_row_group_ctr < out_row_groups_avail) { - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - expand_bottom_edge(output_buf[ci], - compptr->width_in_blocks * DCTSIZE, - (int) (*out_row_group_ctr * compptr->v_samp_factor), - (int) (out_row_groups_avail * compptr->v_samp_factor)); - } - *out_row_group_ctr = out_row_groups_avail; - break; /* can exit outer loop without test */ - } - } -} - - -#ifdef CONTEXT_ROWS_SUPPORTED - -/* - * Process some data in the context case. - */ - -METHODDEF(void) -pre_process_context (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail, - JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, - JDIMENSION out_row_groups_avail) -{ - my_prep_ptr prep = (my_prep_ptr) cinfo->prep; - int numrows, ci; - int buf_height = cinfo->max_v_samp_factor * 3; - JDIMENSION inrows; - - while (*out_row_group_ctr < out_row_groups_avail) { - if (*in_row_ctr < in_rows_avail) { - /* Do color conversion to fill the conversion buffer. */ - inrows = in_rows_avail - *in_row_ctr; - numrows = prep->next_buf_stop - prep->next_buf_row; - numrows = (int) MIN((JDIMENSION) numrows, inrows); - (*cinfo->cconvert->color_convert) (cinfo, input_buf + *in_row_ctr, - prep->color_buf, - (JDIMENSION) prep->next_buf_row, - numrows); - /* Pad at top of image, if first time through */ - if (prep->rows_to_go == cinfo->image_height) { - for (ci = 0; ci < cinfo->num_components; ci++) { - int row; - for (row = 1; row <= cinfo->max_v_samp_factor; row++) { - jcopy_sample_rows(prep->color_buf[ci], 0, - prep->color_buf[ci], -row, - 1, cinfo->image_width); - } - } - } - *in_row_ctr += numrows; - prep->next_buf_row += numrows; - prep->rows_to_go -= numrows; - } else { - /* Return for more data, unless we are at the bottom of the image. */ - if (prep->rows_to_go != 0) - break; - /* When at bottom of image, pad to fill the conversion buffer. */ - if (prep->next_buf_row < prep->next_buf_stop) { - for (ci = 0; ci < cinfo->num_components; ci++) { - expand_bottom_edge(prep->color_buf[ci], cinfo->image_width, - prep->next_buf_row, prep->next_buf_stop); - } - prep->next_buf_row = prep->next_buf_stop; - } - } - /* If we've gotten enough data, downsample a row group. */ - if (prep->next_buf_row == prep->next_buf_stop) { - (*cinfo->downsample->downsample) (cinfo, - prep->color_buf, - (JDIMENSION) prep->this_row_group, - output_buf, *out_row_group_ctr); - (*out_row_group_ctr)++; - /* Advance pointers with wraparound as necessary. */ - prep->this_row_group += cinfo->max_v_samp_factor; - if (prep->this_row_group >= buf_height) - prep->this_row_group = 0; - if (prep->next_buf_row >= buf_height) - prep->next_buf_row = 0; - prep->next_buf_stop = prep->next_buf_row + cinfo->max_v_samp_factor; - } - } -} - - -/* - * Create the wrapped-around downsampling input buffer needed for context mode. - */ - -LOCAL(void) -create_context_buffer (j_compress_ptr cinfo) -{ - my_prep_ptr prep = (my_prep_ptr) cinfo->prep; - int rgroup_height = cinfo->max_v_samp_factor; - int ci, i; - jpeg_component_info * compptr; - JSAMPARRAY true_buffer, fake_buffer; - - /* Grab enough space for fake row pointers for all the components; - * we need five row groups' worth of pointers for each component. - */ - fake_buffer = (JSAMPARRAY) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (cinfo->num_components * 5 * rgroup_height) * - SIZEOF(JSAMPROW)); - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Allocate the actual buffer space (3 row groups) for this component. - * We make the buffer wide enough to allow the downsampler to edge-expand - * horizontally within the buffer, if it so chooses. - */ - true_buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) (((long) compptr->width_in_blocks * DCTSIZE * - cinfo->max_h_samp_factor) / compptr->h_samp_factor), - (JDIMENSION) (3 * rgroup_height)); - /* Copy true buffer row pointers into the middle of the fake row array */ - MEMCOPY(fake_buffer + rgroup_height, true_buffer, - 3 * rgroup_height * SIZEOF(JSAMPROW)); - /* Fill in the above and below wraparound pointers */ - for (i = 0; i < rgroup_height; i++) { - fake_buffer[i] = true_buffer[2 * rgroup_height + i]; - fake_buffer[4 * rgroup_height + i] = true_buffer[i]; - } - prep->color_buf[ci] = fake_buffer + rgroup_height; - fake_buffer += 5 * rgroup_height; /* point to space for next component */ - } -} - -#endif /* CONTEXT_ROWS_SUPPORTED */ - - -/* - * Initialize preprocessing controller. - */ - -GLOBAL(void) -jinit_c_prep_controller (j_compress_ptr cinfo, boolean need_full_buffer) -{ - my_prep_ptr prep; - int ci; - jpeg_component_info * compptr; - - if (need_full_buffer) /* safety check */ - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - - prep = (my_prep_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_prep_controller)); - cinfo->prep = (struct jpeg_c_prep_controller *) prep; - prep->pub.start_pass = start_pass_prep; - - /* Allocate the color conversion buffer. - * We make the buffer wide enough to allow the downsampler to edge-expand - * horizontally within the buffer, if it so chooses. - */ - if (cinfo->downsample->need_context_rows) { - /* Set up to provide context rows */ -#ifdef CONTEXT_ROWS_SUPPORTED - prep->pub.pre_process_data = pre_process_context; - create_context_buffer(cinfo); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else { - /* No context, just make it tall enough for one row group */ - prep->pub.pre_process_data = pre_process_data; - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - prep->color_buf[ci] = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) (((long) compptr->width_in_blocks * DCTSIZE * - cinfo->max_h_samp_factor) / compptr->h_samp_factor), - (JDIMENSION) cinfo->max_v_samp_factor); - } - } -} diff --git a/project/jni/jpeg/jcsample.c b/project/jni/jpeg/jcsample.c deleted file mode 100644 index 212ec8757..000000000 --- a/project/jni/jpeg/jcsample.c +++ /dev/null @@ -1,519 +0,0 @@ -/* - * jcsample.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains downsampling routines. - * - * Downsampling input data is counted in "row groups". A row group - * is defined to be max_v_samp_factor pixel rows of each component, - * from which the downsampler produces v_samp_factor sample rows. - * A single row group is processed in each call to the downsampler module. - * - * The downsampler is responsible for edge-expansion of its output data - * to fill an integral number of DCT blocks horizontally. The source buffer - * may be modified if it is helpful for this purpose (the source buffer is - * allocated wide enough to correspond to the desired output width). - * The caller (the prep controller) is responsible for vertical padding. - * - * The downsampler may request "context rows" by setting need_context_rows - * during startup. In this case, the input arrays will contain at least - * one row group's worth of pixels above and below the passed-in data; - * the caller will create dummy rows at image top and bottom by replicating - * the first or last real pixel row. - * - * An excellent reference for image resampling is - * Digital Image Warping, George Wolberg, 1990. - * Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7. - * - * The downsampling algorithm used here is a simple average of the source - * pixels covered by the output pixel. The hi-falutin sampling literature - * refers to this as a "box filter". In general the characteristics of a box - * filter are not very good, but for the specific cases we normally use (1:1 - * and 2:1 ratios) the box is equivalent to a "triangle filter" which is not - * nearly so bad. If you intend to use other sampling ratios, you'd be well - * advised to improve this code. - * - * A simple input-smoothing capability is provided. This is mainly intended - * for cleaning up color-dithered GIF input files (if you find it inadequate, - * we suggest using an external filtering program such as pnmconvol). When - * enabled, each input pixel P is replaced by a weighted sum of itself and its - * eight neighbors. P's weight is 1-8*SF and each neighbor's weight is SF, - * where SF = (smoothing_factor / 1024). - * Currently, smoothing is only supported for 2h2v sampling factors. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Pointer to routine to downsample a single component */ -typedef JMETHOD(void, downsample1_ptr, - (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data)); - -/* Private subobject */ - -typedef struct { - struct jpeg_downsampler pub; /* public fields */ - - /* Downsampling method pointers, one per component */ - downsample1_ptr methods[MAX_COMPONENTS]; -} my_downsampler; - -typedef my_downsampler * my_downsample_ptr; - - -/* - * Initialize for a downsampling pass. - */ - -METHODDEF(void) -start_pass_downsample (j_compress_ptr cinfo) -{ - /* no work for now */ -} - - -/* - * Expand a component horizontally from width input_cols to width output_cols, - * by duplicating the rightmost samples. - */ - -LOCAL(void) -expand_right_edge (JSAMPARRAY image_data, int num_rows, - JDIMENSION input_cols, JDIMENSION output_cols) -{ - register JSAMPROW ptr; - register JSAMPLE pixval; - register int count; - int row; - int numcols = (int) (output_cols - input_cols); - - if (numcols > 0) { - for (row = 0; row < num_rows; row++) { - ptr = image_data[row] + input_cols; - pixval = ptr[-1]; /* don't need GETJSAMPLE() here */ - for (count = numcols; count > 0; count--) - *ptr++ = pixval; - } - } -} - - -/* - * Do downsampling for a whole row group (all components). - * - * In this version we simply downsample each component independently. - */ - -METHODDEF(void) -sep_downsample (j_compress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_index, - JSAMPIMAGE output_buf, JDIMENSION out_row_group_index) -{ - my_downsample_ptr downsample = (my_downsample_ptr) cinfo->downsample; - int ci; - jpeg_component_info * compptr; - JSAMPARRAY in_ptr, out_ptr; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - in_ptr = input_buf[ci] + in_row_index; - out_ptr = output_buf[ci] + (out_row_group_index * compptr->v_samp_factor); - (*downsample->methods[ci]) (cinfo, compptr, in_ptr, out_ptr); - } -} - - -/* - * Downsample pixel values of a single component. - * One row group is processed per call. - * This version handles arbitrary integral sampling ratios, without smoothing. - * Note that this version is not actually used for customary sampling ratios. - */ - -METHODDEF(void) -int_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - int inrow, outrow, h_expand, v_expand, numpix, numpix2, h, v; - JDIMENSION outcol, outcol_h; /* outcol_h == outcol*h_expand */ - JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE; - JSAMPROW inptr, outptr; - INT32 outvalue; - - h_expand = cinfo->max_h_samp_factor / compptr->h_samp_factor; - v_expand = cinfo->max_v_samp_factor / compptr->v_samp_factor; - numpix = h_expand * v_expand; - numpix2 = numpix/2; - - /* Expand input data enough to let all the output samples be generated - * by the standard loop. Special-casing padded output would be more - * efficient. - */ - expand_right_edge(input_data, cinfo->max_v_samp_factor, - cinfo->image_width, output_cols * h_expand); - - inrow = 0; - for (outrow = 0; outrow < compptr->v_samp_factor; outrow++) { - outptr = output_data[outrow]; - for (outcol = 0, outcol_h = 0; outcol < output_cols; - outcol++, outcol_h += h_expand) { - outvalue = 0; - for (v = 0; v < v_expand; v++) { - inptr = input_data[inrow+v] + outcol_h; - for (h = 0; h < h_expand; h++) { - outvalue += (INT32) GETJSAMPLE(*inptr++); - } - } - *outptr++ = (JSAMPLE) ((outvalue + numpix2) / numpix); - } - inrow += v_expand; - } -} - - -/* - * Downsample pixel values of a single component. - * This version handles the special case of a full-size component, - * without smoothing. - */ - -METHODDEF(void) -fullsize_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - /* Copy the data */ - jcopy_sample_rows(input_data, 0, output_data, 0, - cinfo->max_v_samp_factor, cinfo->image_width); - /* Edge-expand */ - expand_right_edge(output_data, cinfo->max_v_samp_factor, - cinfo->image_width, compptr->width_in_blocks * DCTSIZE); -} - - -/* - * Downsample pixel values of a single component. - * This version handles the common case of 2:1 horizontal and 1:1 vertical, - * without smoothing. - * - * A note about the "bias" calculations: when rounding fractional values to - * integer, we do not want to always round 0.5 up to the next integer. - * If we did that, we'd introduce a noticeable bias towards larger values. - * Instead, this code is arranged so that 0.5 will be rounded up or down at - * alternate pixel locations (a simple ordered dither pattern). - */ - -METHODDEF(void) -h2v1_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - int outrow; - JDIMENSION outcol; - JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE; - register JSAMPROW inptr, outptr; - register int bias; - - /* Expand input data enough to let all the output samples be generated - * by the standard loop. Special-casing padded output would be more - * efficient. - */ - expand_right_edge(input_data, cinfo->max_v_samp_factor, - cinfo->image_width, output_cols * 2); - - for (outrow = 0; outrow < compptr->v_samp_factor; outrow++) { - outptr = output_data[outrow]; - inptr = input_data[outrow]; - bias = 0; /* bias = 0,1,0,1,... for successive samples */ - for (outcol = 0; outcol < output_cols; outcol++) { - *outptr++ = (JSAMPLE) ((GETJSAMPLE(*inptr) + GETJSAMPLE(inptr[1]) - + bias) >> 1); - bias ^= 1; /* 0=>1, 1=>0 */ - inptr += 2; - } - } -} - - -/* - * Downsample pixel values of a single component. - * This version handles the standard case of 2:1 horizontal and 2:1 vertical, - * without smoothing. - */ - -METHODDEF(void) -h2v2_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - int inrow, outrow; - JDIMENSION outcol; - JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE; - register JSAMPROW inptr0, inptr1, outptr; - register int bias; - - /* Expand input data enough to let all the output samples be generated - * by the standard loop. Special-casing padded output would be more - * efficient. - */ - expand_right_edge(input_data, cinfo->max_v_samp_factor, - cinfo->image_width, output_cols * 2); - - inrow = 0; - for (outrow = 0; outrow < compptr->v_samp_factor; outrow++) { - outptr = output_data[outrow]; - inptr0 = input_data[inrow]; - inptr1 = input_data[inrow+1]; - bias = 1; /* bias = 1,2,1,2,... for successive samples */ - for (outcol = 0; outcol < output_cols; outcol++) { - *outptr++ = (JSAMPLE) ((GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + - GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]) - + bias) >> 2); - bias ^= 3; /* 1=>2, 2=>1 */ - inptr0 += 2; inptr1 += 2; - } - inrow += 2; - } -} - - -#ifdef INPUT_SMOOTHING_SUPPORTED - -/* - * Downsample pixel values of a single component. - * This version handles the standard case of 2:1 horizontal and 2:1 vertical, - * with smoothing. One row of context is required. - */ - -METHODDEF(void) -h2v2_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - int inrow, outrow; - JDIMENSION colctr; - JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE; - register JSAMPROW inptr0, inptr1, above_ptr, below_ptr, outptr; - INT32 membersum, neighsum, memberscale, neighscale; - - /* Expand input data enough to let all the output samples be generated - * by the standard loop. Special-casing padded output would be more - * efficient. - */ - expand_right_edge(input_data - 1, cinfo->max_v_samp_factor + 2, - cinfo->image_width, output_cols * 2); - - /* We don't bother to form the individual "smoothed" input pixel values; - * we can directly compute the output which is the average of the four - * smoothed values. Each of the four member pixels contributes a fraction - * (1-8*SF) to its own smoothed image and a fraction SF to each of the three - * other smoothed pixels, therefore a total fraction (1-5*SF)/4 to the final - * output. The four corner-adjacent neighbor pixels contribute a fraction - * SF to just one smoothed pixel, or SF/4 to the final output; while the - * eight edge-adjacent neighbors contribute SF to each of two smoothed - * pixels, or SF/2 overall. In order to use integer arithmetic, these - * factors are scaled by 2^16 = 65536. - * Also recall that SF = smoothing_factor / 1024. - */ - - memberscale = 16384 - cinfo->smoothing_factor * 80; /* scaled (1-5*SF)/4 */ - neighscale = cinfo->smoothing_factor * 16; /* scaled SF/4 */ - - inrow = 0; - for (outrow = 0; outrow < compptr->v_samp_factor; outrow++) { - outptr = output_data[outrow]; - inptr0 = input_data[inrow]; - inptr1 = input_data[inrow+1]; - above_ptr = input_data[inrow-1]; - below_ptr = input_data[inrow+2]; - - /* Special case for first column: pretend column -1 is same as column 0 */ - membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + - GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]); - neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) + - GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) + - GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[2]) + - GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[2]); - neighsum += neighsum; - neighsum += GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[2]) + - GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[2]); - membersum = membersum * memberscale + neighsum * neighscale; - *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); - inptr0 += 2; inptr1 += 2; above_ptr += 2; below_ptr += 2; - - for (colctr = output_cols - 2; colctr > 0; colctr--) { - /* sum of pixels directly mapped to this output element */ - membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + - GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]); - /* sum of edge-neighbor pixels */ - neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) + - GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) + - GETJSAMPLE(inptr0[-1]) + GETJSAMPLE(inptr0[2]) + - GETJSAMPLE(inptr1[-1]) + GETJSAMPLE(inptr1[2]); - /* The edge-neighbors count twice as much as corner-neighbors */ - neighsum += neighsum; - /* Add in the corner-neighbors */ - neighsum += GETJSAMPLE(above_ptr[-1]) + GETJSAMPLE(above_ptr[2]) + - GETJSAMPLE(below_ptr[-1]) + GETJSAMPLE(below_ptr[2]); - /* form final output scaled up by 2^16 */ - membersum = membersum * memberscale + neighsum * neighscale; - /* round, descale and output it */ - *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); - inptr0 += 2; inptr1 += 2; above_ptr += 2; below_ptr += 2; - } - - /* Special case for last column */ - membersum = GETJSAMPLE(*inptr0) + GETJSAMPLE(inptr0[1]) + - GETJSAMPLE(*inptr1) + GETJSAMPLE(inptr1[1]); - neighsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(above_ptr[1]) + - GETJSAMPLE(*below_ptr) + GETJSAMPLE(below_ptr[1]) + - GETJSAMPLE(inptr0[-1]) + GETJSAMPLE(inptr0[1]) + - GETJSAMPLE(inptr1[-1]) + GETJSAMPLE(inptr1[1]); - neighsum += neighsum; - neighsum += GETJSAMPLE(above_ptr[-1]) + GETJSAMPLE(above_ptr[1]) + - GETJSAMPLE(below_ptr[-1]) + GETJSAMPLE(below_ptr[1]); - membersum = membersum * memberscale + neighsum * neighscale; - *outptr = (JSAMPLE) ((membersum + 32768) >> 16); - - inrow += 2; - } -} - - -/* - * Downsample pixel values of a single component. - * This version handles the special case of a full-size component, - * with smoothing. One row of context is required. - */ - -METHODDEF(void) -fullsize_smooth_downsample (j_compress_ptr cinfo, jpeg_component_info *compptr, - JSAMPARRAY input_data, JSAMPARRAY output_data) -{ - int outrow; - JDIMENSION colctr; - JDIMENSION output_cols = compptr->width_in_blocks * DCTSIZE; - register JSAMPROW inptr, above_ptr, below_ptr, outptr; - INT32 membersum, neighsum, memberscale, neighscale; - int colsum, lastcolsum, nextcolsum; - - /* Expand input data enough to let all the output samples be generated - * by the standard loop. Special-casing padded output would be more - * efficient. - */ - expand_right_edge(input_data - 1, cinfo->max_v_samp_factor + 2, - cinfo->image_width, output_cols); - - /* Each of the eight neighbor pixels contributes a fraction SF to the - * smoothed pixel, while the main pixel contributes (1-8*SF). In order - * to use integer arithmetic, these factors are multiplied by 2^16 = 65536. - * Also recall that SF = smoothing_factor / 1024. - */ - - memberscale = 65536L - cinfo->smoothing_factor * 512L; /* scaled 1-8*SF */ - neighscale = cinfo->smoothing_factor * 64; /* scaled SF */ - - for (outrow = 0; outrow < compptr->v_samp_factor; outrow++) { - outptr = output_data[outrow]; - inptr = input_data[outrow]; - above_ptr = input_data[outrow-1]; - below_ptr = input_data[outrow+1]; - - /* Special case for first column */ - colsum = GETJSAMPLE(*above_ptr++) + GETJSAMPLE(*below_ptr++) + - GETJSAMPLE(*inptr); - membersum = GETJSAMPLE(*inptr++); - nextcolsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(*below_ptr) + - GETJSAMPLE(*inptr); - neighsum = colsum + (colsum - membersum) + nextcolsum; - membersum = membersum * memberscale + neighsum * neighscale; - *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); - lastcolsum = colsum; colsum = nextcolsum; - - for (colctr = output_cols - 2; colctr > 0; colctr--) { - membersum = GETJSAMPLE(*inptr++); - above_ptr++; below_ptr++; - nextcolsum = GETJSAMPLE(*above_ptr) + GETJSAMPLE(*below_ptr) + - GETJSAMPLE(*inptr); - neighsum = lastcolsum + (colsum - membersum) + nextcolsum; - membersum = membersum * memberscale + neighsum * neighscale; - *outptr++ = (JSAMPLE) ((membersum + 32768) >> 16); - lastcolsum = colsum; colsum = nextcolsum; - } - - /* Special case for last column */ - membersum = GETJSAMPLE(*inptr); - neighsum = lastcolsum + (colsum - membersum) + colsum; - membersum = membersum * memberscale + neighsum * neighscale; - *outptr = (JSAMPLE) ((membersum + 32768) >> 16); - - } -} - -#endif /* INPUT_SMOOTHING_SUPPORTED */ - - -/* - * Module initialization routine for downsampling. - * Note that we must select a routine for each component. - */ - -GLOBAL(void) -jinit_downsampler (j_compress_ptr cinfo) -{ - my_downsample_ptr downsample; - int ci; - jpeg_component_info * compptr; - boolean smoothok = TRUE; - - downsample = (my_downsample_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_downsampler)); - cinfo->downsample = (struct jpeg_downsampler *) downsample; - downsample->pub.start_pass = start_pass_downsample; - downsample->pub.downsample = sep_downsample; - downsample->pub.need_context_rows = FALSE; - - if (cinfo->CCIR601_sampling) - ERREXIT(cinfo, JERR_CCIR601_NOTIMPL); - - /* Verify we can handle the sampling factors, and set up method pointers */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - if (compptr->h_samp_factor == cinfo->max_h_samp_factor && - compptr->v_samp_factor == cinfo->max_v_samp_factor) { -#ifdef INPUT_SMOOTHING_SUPPORTED - if (cinfo->smoothing_factor) { - downsample->methods[ci] = fullsize_smooth_downsample; - downsample->pub.need_context_rows = TRUE; - } else -#endif - downsample->methods[ci] = fullsize_downsample; - } else if (compptr->h_samp_factor * 2 == cinfo->max_h_samp_factor && - compptr->v_samp_factor == cinfo->max_v_samp_factor) { - smoothok = FALSE; - downsample->methods[ci] = h2v1_downsample; - } else if (compptr->h_samp_factor * 2 == cinfo->max_h_samp_factor && - compptr->v_samp_factor * 2 == cinfo->max_v_samp_factor) { -#ifdef INPUT_SMOOTHING_SUPPORTED - if (cinfo->smoothing_factor) { - downsample->methods[ci] = h2v2_smooth_downsample; - downsample->pub.need_context_rows = TRUE; - } else -#endif - downsample->methods[ci] = h2v2_downsample; - } else if ((cinfo->max_h_samp_factor % compptr->h_samp_factor) == 0 && - (cinfo->max_v_samp_factor % compptr->v_samp_factor) == 0) { - smoothok = FALSE; - downsample->methods[ci] = int_downsample; - } else - ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL); - } - -#ifdef INPUT_SMOOTHING_SUPPORTED - if (cinfo->smoothing_factor && !smoothok) - TRACEMS(cinfo, 0, JTRC_SMOOTH_NOTIMPL); -#endif -} diff --git a/project/jni/jpeg/jctrans.c b/project/jni/jpeg/jctrans.c deleted file mode 100644 index 0e6d70769..000000000 --- a/project/jni/jpeg/jctrans.c +++ /dev/null @@ -1,388 +0,0 @@ -/* - * jctrans.c - * - * Copyright (C) 1995-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains library routines for transcoding compression, - * that is, writing raw DCT coefficient arrays to an output JPEG file. - * The routines in jcapimin.c will also be needed by a transcoder. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Forward declarations */ -LOCAL(void) transencode_master_selection - JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)); -LOCAL(void) transencode_coef_controller - JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)); - - -/* - * Compression initialization for writing raw-coefficient data. - * Before calling this, all parameters and a data destination must be set up. - * Call jpeg_finish_compress() to actually write the data. - * - * The number of passed virtual arrays must match cinfo->num_components. - * Note that the virtual arrays need not be filled or even realized at - * the time write_coefficients is called; indeed, if the virtual arrays - * were requested from this compression object's memory manager, they - * typically will be realized during this routine and filled afterwards. - */ - -GLOBAL(void) -jpeg_write_coefficients (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays) -{ - if (cinfo->global_state != CSTATE_START) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - /* Mark all tables to be written */ - jpeg_suppress_tables(cinfo, FALSE); - /* (Re)initialize error mgr and destination modules */ - (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); - (*cinfo->dest->init_destination) (cinfo); - /* Perform master selection of active modules */ - transencode_master_selection(cinfo, coef_arrays); - /* Wait for jpeg_finish_compress() call */ - cinfo->next_scanline = 0; /* so jpeg_write_marker works */ - cinfo->global_state = CSTATE_WRCOEFS; -} - - -/* - * Initialize the compression object with default parameters, - * then copy from the source object all parameters needed for lossless - * transcoding. Parameters that can be varied without loss (such as - * scan script and Huffman optimization) are left in their default states. - */ - -GLOBAL(void) -jpeg_copy_critical_parameters (j_decompress_ptr srcinfo, - j_compress_ptr dstinfo) -{ - JQUANT_TBL ** qtblptr; - jpeg_component_info *incomp, *outcomp; - JQUANT_TBL *c_quant, *slot_quant; - int tblno, ci, coefi; - - /* Safety check to ensure start_compress not called yet. */ - if (dstinfo->global_state != CSTATE_START) - ERREXIT1(dstinfo, JERR_BAD_STATE, dstinfo->global_state); - /* Copy fundamental image dimensions */ - dstinfo->image_width = srcinfo->image_width; - dstinfo->image_height = srcinfo->image_height; - dstinfo->input_components = srcinfo->num_components; - dstinfo->in_color_space = srcinfo->jpeg_color_space; - /* Initialize all parameters to default values */ - jpeg_set_defaults(dstinfo); - /* jpeg_set_defaults may choose wrong colorspace, eg YCbCr if input is RGB. - * Fix it to get the right header markers for the image colorspace. - */ - jpeg_set_colorspace(dstinfo, srcinfo->jpeg_color_space); - dstinfo->data_precision = srcinfo->data_precision; - dstinfo->CCIR601_sampling = srcinfo->CCIR601_sampling; - /* Copy the source's quantization tables. */ - for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) { - if (srcinfo->quant_tbl_ptrs[tblno] != NULL) { - qtblptr = & dstinfo->quant_tbl_ptrs[tblno]; - if (*qtblptr == NULL) - *qtblptr = jpeg_alloc_quant_table((j_common_ptr) dstinfo); - MEMCOPY((*qtblptr)->quantval, - srcinfo->quant_tbl_ptrs[tblno]->quantval, - SIZEOF((*qtblptr)->quantval)); - (*qtblptr)->sent_table = FALSE; - } - } - /* Copy the source's per-component info. - * Note we assume jpeg_set_defaults has allocated the dest comp_info array. - */ - dstinfo->num_components = srcinfo->num_components; - if (dstinfo->num_components < 1 || dstinfo->num_components > MAX_COMPONENTS) - ERREXIT2(dstinfo, JERR_COMPONENT_COUNT, dstinfo->num_components, - MAX_COMPONENTS); - for (ci = 0, incomp = srcinfo->comp_info, outcomp = dstinfo->comp_info; - ci < dstinfo->num_components; ci++, incomp++, outcomp++) { - outcomp->component_id = incomp->component_id; - outcomp->h_samp_factor = incomp->h_samp_factor; - outcomp->v_samp_factor = incomp->v_samp_factor; - outcomp->quant_tbl_no = incomp->quant_tbl_no; - /* Make sure saved quantization table for component matches the qtable - * slot. If not, the input file re-used this qtable slot. - * IJG encoder currently cannot duplicate this. - */ - tblno = outcomp->quant_tbl_no; - if (tblno < 0 || tblno >= NUM_QUANT_TBLS || - srcinfo->quant_tbl_ptrs[tblno] == NULL) - ERREXIT1(dstinfo, JERR_NO_QUANT_TABLE, tblno); - slot_quant = srcinfo->quant_tbl_ptrs[tblno]; - c_quant = incomp->quant_table; - if (c_quant != NULL) { - for (coefi = 0; coefi < DCTSIZE2; coefi++) { - if (c_quant->quantval[coefi] != slot_quant->quantval[coefi]) - ERREXIT1(dstinfo, JERR_MISMATCHED_QUANT_TABLE, tblno); - } - } - /* Note: we do not copy the source's Huffman table assignments; - * instead we rely on jpeg_set_colorspace to have made a suitable choice. - */ - } - /* Also copy JFIF version and resolution information, if available. - * Strictly speaking this isn't "critical" info, but it's nearly - * always appropriate to copy it if available. In particular, - * if the application chooses to copy JFIF 1.02 extension markers from - * the source file, we need to copy the version to make sure we don't - * emit a file that has 1.02 extensions but a claimed version of 1.01. - * We will *not*, however, copy version info from mislabeled "2.01" files. - */ - if (srcinfo->saw_JFIF_marker) { - if (srcinfo->JFIF_major_version == 1) { - dstinfo->JFIF_major_version = srcinfo->JFIF_major_version; - dstinfo->JFIF_minor_version = srcinfo->JFIF_minor_version; - } - dstinfo->density_unit = srcinfo->density_unit; - dstinfo->X_density = srcinfo->X_density; - dstinfo->Y_density = srcinfo->Y_density; - } -} - - -/* - * Master selection of compression modules for transcoding. - * This substitutes for jcinit.c's initialization of the full compressor. - */ - -LOCAL(void) -transencode_master_selection (j_compress_ptr cinfo, - jvirt_barray_ptr * coef_arrays) -{ - /* Although we don't actually use input_components for transcoding, - * jcmaster.c's initial_setup will complain if input_components is 0. - */ - cinfo->input_components = 1; - /* Initialize master control (includes parameter checking/processing) */ - jinit_c_master_control(cinfo, TRUE /* transcode only */); - - /* Entropy encoding: either Huffman or arithmetic coding. */ - if (cinfo->arith_code) { - ERREXIT(cinfo, JERR_ARITH_NOTIMPL); - } else { - if (cinfo->progressive_mode) { -#ifdef C_PROGRESSIVE_SUPPORTED - jinit_phuff_encoder(cinfo); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else - jinit_huff_encoder(cinfo); - } - - /* We need a special coefficient buffer controller. */ - transencode_coef_controller(cinfo, coef_arrays); - - jinit_marker_writer(cinfo); - - /* We can now tell the memory manager to allocate virtual arrays. */ - (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); - - /* Write the datastream header (SOI, JFIF) immediately. - * Frame and scan headers are postponed till later. - * This lets application insert special markers after the SOI. - */ - (*cinfo->marker->write_file_header) (cinfo); -} - - -/* - * The rest of this file is a special implementation of the coefficient - * buffer controller. This is similar to jccoefct.c, but it handles only - * output from presupplied virtual arrays. Furthermore, we generate any - * dummy padding blocks on-the-fly rather than expecting them to be present - * in the arrays. - */ - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_c_coef_controller pub; /* public fields */ - - JDIMENSION iMCU_row_num; /* iMCU row # within image */ - JDIMENSION mcu_ctr; /* counts MCUs processed in current row */ - int MCU_vert_offset; /* counts MCU rows within iMCU row */ - int MCU_rows_per_iMCU_row; /* number of such rows needed */ - - /* Virtual block array for each component. */ - jvirt_barray_ptr * whole_image; - - /* Workspace for constructing dummy blocks at right/bottom edges. */ - JBLOCKROW dummy_buffer[C_MAX_BLOCKS_IN_MCU]; -} my_coef_controller; - -typedef my_coef_controller * my_coef_ptr; - - -LOCAL(void) -start_iMCU_row (j_compress_ptr cinfo) -/* Reset within-iMCU-row counters for a new row */ -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - - /* In an interleaved scan, an MCU row is the same as an iMCU row. - * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows. - * But at the bottom of the image, process only what's left. - */ - if (cinfo->comps_in_scan > 1) { - coef->MCU_rows_per_iMCU_row = 1; - } else { - if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1)) - coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor; - else - coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height; - } - - coef->mcu_ctr = 0; - coef->MCU_vert_offset = 0; -} - - -/* - * Initialize for a processing pass. - */ - -METHODDEF(void) -start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - - if (pass_mode != JBUF_CRANK_DEST) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - - coef->iMCU_row_num = 0; - start_iMCU_row(cinfo); -} - - -/* - * Process some data. - * We process the equivalent of one fully interleaved MCU row ("iMCU" row) - * per call, ie, v_samp_factor block rows for each component in the scan. - * The data is obtained from the virtual arrays and fed to the entropy coder. - * Returns TRUE if the iMCU row is completed, FALSE if suspended. - * - * NB: input_buf is ignored; it is likely to be a NULL pointer. - */ - -METHODDEF(boolean) -compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION MCU_col_num; /* index of current MCU within row */ - JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1; - JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; - int blkn, ci, xindex, yindex, yoffset, blockcnt; - JDIMENSION start_col; - JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN]; - JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU]; - JBLOCKROW buffer_ptr; - jpeg_component_info *compptr; - - /* Align the virtual buffers for the components used in this scan. */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - buffer[ci] = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index], - coef->iMCU_row_num * compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, FALSE); - } - - /* Loop to process one whole iMCU row */ - for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; - yoffset++) { - for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row; - MCU_col_num++) { - /* Construct list of pointers to DCT blocks belonging to this MCU */ - blkn = 0; /* index of current DCT block within MCU */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - start_col = MCU_col_num * compptr->MCU_width; - blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width - : compptr->last_col_width; - for (yindex = 0; yindex < compptr->MCU_height; yindex++) { - if (coef->iMCU_row_num < last_iMCU_row || - yindex+yoffset < compptr->last_row_height) { - /* Fill in pointers to real blocks in this row */ - buffer_ptr = buffer[ci][yindex+yoffset] + start_col; - for (xindex = 0; xindex < blockcnt; xindex++) - MCU_buffer[blkn++] = buffer_ptr++; - } else { - /* At bottom of image, need a whole row of dummy blocks */ - xindex = 0; - } - /* Fill in any dummy blocks needed in this row. - * Dummy blocks are filled in the same way as in jccoefct.c: - * all zeroes in the AC entries, DC entries equal to previous - * block's DC value. The init routine has already zeroed the - * AC entries, so we need only set the DC entries correctly. - */ - for (; xindex < compptr->MCU_width; xindex++) { - MCU_buffer[blkn] = coef->dummy_buffer[blkn]; - MCU_buffer[blkn][0][0] = MCU_buffer[blkn-1][0][0]; - blkn++; - } - } - } - /* Try to write the MCU. */ - if (! (*cinfo->entropy->encode_mcu) (cinfo, MCU_buffer)) { - /* Suspension forced; update state counters and exit */ - coef->MCU_vert_offset = yoffset; - coef->mcu_ctr = MCU_col_num; - return FALSE; - } - } - /* Completed an MCU row, but perhaps not an iMCU row */ - coef->mcu_ctr = 0; - } - /* Completed the iMCU row, advance counters for next one */ - coef->iMCU_row_num++; - start_iMCU_row(cinfo); - return TRUE; -} - - -/* - * Initialize coefficient buffer controller. - * - * Each passed coefficient array must be the right size for that - * coefficient: width_in_blocks wide and height_in_blocks high, - * with unitheight at least v_samp_factor. - */ - -LOCAL(void) -transencode_coef_controller (j_compress_ptr cinfo, - jvirt_barray_ptr * coef_arrays) -{ - my_coef_ptr coef; - JBLOCKROW buffer; - int i; - - coef = (my_coef_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_coef_controller)); - cinfo->coef = (struct jpeg_c_coef_controller *) coef; - coef->pub.start_pass = start_pass_coef; - coef->pub.compress_data = compress_output; - - /* Save pointer to virtual arrays */ - coef->whole_image = coef_arrays; - - /* Allocate and pre-zero space for dummy DCT blocks. */ - buffer = (JBLOCKROW) - (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, - C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); - jzero_far((void FAR *) buffer, C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); - for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) { - coef->dummy_buffer[i] = buffer + i; - } -} diff --git a/project/jni/jpeg/jdapimin.c b/project/jni/jpeg/jdapimin.c deleted file mode 100644 index cadb59fce..000000000 --- a/project/jni/jpeg/jdapimin.c +++ /dev/null @@ -1,395 +0,0 @@ -/* - * jdapimin.c - * - * Copyright (C) 1994-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains application interface code for the decompression half - * of the JPEG library. These are the "minimum" API routines that may be - * needed in either the normal full-decompression case or the - * transcoding-only case. - * - * Most of the routines intended to be called directly by an application - * are in this file or in jdapistd.c. But also see jcomapi.c for routines - * shared by compression and decompression, and jdtrans.c for the transcoding - * case. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * Initialization of a JPEG decompression object. - * The error manager must already be set up (in case memory manager fails). - */ - -GLOBAL(void) -jpeg_CreateDecompress (j_decompress_ptr cinfo, int version, size_t structsize) -{ - int i; - - /* Guard against version mismatches between library and caller. */ - cinfo->mem = NULL; /* so jpeg_destroy knows mem mgr not called */ - if (version != JPEG_LIB_VERSION) - ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION, version); - if (structsize != SIZEOF(struct jpeg_decompress_struct)) - ERREXIT2(cinfo, JERR_BAD_STRUCT_SIZE, - (int) SIZEOF(struct jpeg_decompress_struct), (int) structsize); - - /* For debugging purposes, we zero the whole master structure. - * But the application has already set the err pointer, and may have set - * client_data, so we have to save and restore those fields. - * Note: if application hasn't set client_data, tools like Purify may - * complain here. - */ - { - struct jpeg_error_mgr * err = cinfo->err; - void * client_data = cinfo->client_data; /* ignore Purify complaint here */ - MEMZERO(cinfo, SIZEOF(struct jpeg_decompress_struct)); - cinfo->err = err; - cinfo->client_data = client_data; - } - cinfo->is_decompressor = TRUE; - - /* Initialize a memory manager instance for this object */ - jinit_memory_mgr((j_common_ptr) cinfo); - - /* Zero out pointers to permanent structures. */ - cinfo->progress = NULL; - cinfo->src = NULL; - - for (i = 0; i < NUM_QUANT_TBLS; i++) - cinfo->quant_tbl_ptrs[i] = NULL; - - for (i = 0; i < NUM_HUFF_TBLS; i++) { - cinfo->dc_huff_tbl_ptrs[i] = NULL; - cinfo->ac_huff_tbl_ptrs[i] = NULL; - } - - /* Initialize marker processor so application can override methods - * for COM, APPn markers before calling jpeg_read_header. - */ - cinfo->marker_list = NULL; - jinit_marker_reader(cinfo); - - /* And initialize the overall input controller. */ - jinit_input_controller(cinfo); - - /* OK, I'm ready */ - cinfo->global_state = DSTATE_START; -} - - -/* - * Destruction of a JPEG decompression object - */ - -GLOBAL(void) -jpeg_destroy_decompress (j_decompress_ptr cinfo) -{ - jpeg_destroy((j_common_ptr) cinfo); /* use common routine */ -} - - -/* - * Abort processing of a JPEG decompression operation, - * but don't destroy the object itself. - */ - -GLOBAL(void) -jpeg_abort_decompress (j_decompress_ptr cinfo) -{ - jpeg_abort((j_common_ptr) cinfo); /* use common routine */ -} - - -/* - * Set default decompression parameters. - */ - -LOCAL(void) -default_decompress_parms (j_decompress_ptr cinfo) -{ - /* Guess the input colorspace, and set output colorspace accordingly. */ - /* (Wish JPEG committee had provided a real way to specify this...) */ - /* Note application may override our guesses. */ - switch (cinfo->num_components) { - case 1: - cinfo->jpeg_color_space = JCS_GRAYSCALE; - cinfo->out_color_space = JCS_GRAYSCALE; - break; - - case 3: - if (cinfo->saw_JFIF_marker) { - cinfo->jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */ - } else if (cinfo->saw_Adobe_marker) { - switch (cinfo->Adobe_transform) { - case 0: - cinfo->jpeg_color_space = JCS_RGB; - break; - case 1: - cinfo->jpeg_color_space = JCS_YCbCr; - break; - default: - WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform); - cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ - break; - } - } else { - /* Saw no special markers, try to guess from the component IDs */ - int cid0 = cinfo->comp_info[0].component_id; - int cid1 = cinfo->comp_info[1].component_id; - int cid2 = cinfo->comp_info[2].component_id; - - if (cid0 == 1 && cid1 == 2 && cid2 == 3) - cinfo->jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */ - else if (cid0 == 82 && cid1 == 71 && cid2 == 66) - cinfo->jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */ - else { - TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2); - cinfo->jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ - } - } - /* Always guess RGB is proper output colorspace. */ - cinfo->out_color_space = JCS_RGB; - break; - - case 4: - if (cinfo->saw_Adobe_marker) { - switch (cinfo->Adobe_transform) { - case 0: - cinfo->jpeg_color_space = JCS_CMYK; - break; - case 2: - cinfo->jpeg_color_space = JCS_YCCK; - break; - default: - WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo->Adobe_transform); - cinfo->jpeg_color_space = JCS_YCCK; /* assume it's YCCK */ - break; - } - } else { - /* No special markers, assume straight CMYK. */ - cinfo->jpeg_color_space = JCS_CMYK; - } - cinfo->out_color_space = JCS_CMYK; - break; - - default: - cinfo->jpeg_color_space = JCS_UNKNOWN; - cinfo->out_color_space = JCS_UNKNOWN; - break; - } - - /* Set defaults for other decompression parameters. */ - cinfo->scale_num = 1; /* 1:1 scaling */ - cinfo->scale_denom = 1; - cinfo->output_gamma = 1.0; - cinfo->buffered_image = FALSE; - cinfo->raw_data_out = FALSE; - cinfo->dct_method = JDCT_DEFAULT; - cinfo->do_fancy_upsampling = TRUE; - cinfo->do_block_smoothing = TRUE; - cinfo->quantize_colors = FALSE; - /* We set these in case application only sets quantize_colors. */ - cinfo->dither_mode = JDITHER_FS; -#ifdef QUANT_2PASS_SUPPORTED - cinfo->two_pass_quantize = TRUE; -#else - cinfo->two_pass_quantize = FALSE; -#endif - cinfo->desired_number_of_colors = 256; - cinfo->colormap = NULL; - /* Initialize for no mode change in buffered-image mode. */ - cinfo->enable_1pass_quant = FALSE; - cinfo->enable_external_quant = FALSE; - cinfo->enable_2pass_quant = FALSE; -} - - -/* - * Decompression startup: read start of JPEG datastream to see what's there. - * Need only initialize JPEG object and supply a data source before calling. - * - * This routine will read as far as the first SOS marker (ie, actual start of - * compressed data), and will save all tables and parameters in the JPEG - * object. It will also initialize the decompression parameters to default - * values, and finally return JPEG_HEADER_OK. On return, the application may - * adjust the decompression parameters and then call jpeg_start_decompress. - * (Or, if the application only wanted to determine the image parameters, - * the data need not be decompressed. In that case, call jpeg_abort or - * jpeg_destroy to release any temporary space.) - * If an abbreviated (tables only) datastream is presented, the routine will - * return JPEG_HEADER_TABLES_ONLY upon reaching EOI. The application may then - * re-use the JPEG object to read the abbreviated image datastream(s). - * It is unnecessary (but OK) to call jpeg_abort in this case. - * The JPEG_SUSPENDED return code only occurs if the data source module - * requests suspension of the decompressor. In this case the application - * should load more source data and then re-call jpeg_read_header to resume - * processing. - * If a non-suspending data source is used and require_image is TRUE, then the - * return code need not be inspected since only JPEG_HEADER_OK is possible. - * - * This routine is now just a front end to jpeg_consume_input, with some - * extra error checking. - */ - -GLOBAL(int) -jpeg_read_header (j_decompress_ptr cinfo, boolean require_image) -{ - int retcode; - - if (cinfo->global_state != DSTATE_START && - cinfo->global_state != DSTATE_INHEADER) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - retcode = jpeg_consume_input(cinfo); - - switch (retcode) { - case JPEG_REACHED_SOS: - retcode = JPEG_HEADER_OK; - break; - case JPEG_REACHED_EOI: - if (require_image) /* Complain if application wanted an image */ - ERREXIT(cinfo, JERR_NO_IMAGE); - /* Reset to start state; it would be safer to require the application to - * call jpeg_abort, but we can't change it now for compatibility reasons. - * A side effect is to free any temporary memory (there shouldn't be any). - */ - jpeg_abort((j_common_ptr) cinfo); /* sets state = DSTATE_START */ - retcode = JPEG_HEADER_TABLES_ONLY; - break; - case JPEG_SUSPENDED: - /* no work */ - break; - } - - return retcode; -} - - -/* - * Consume data in advance of what the decompressor requires. - * This can be called at any time once the decompressor object has - * been created and a data source has been set up. - * - * This routine is essentially a state machine that handles a couple - * of critical state-transition actions, namely initial setup and - * transition from header scanning to ready-for-start_decompress. - * All the actual input is done via the input controller's consume_input - * method. - */ - -GLOBAL(int) -jpeg_consume_input (j_decompress_ptr cinfo) -{ - int retcode = JPEG_SUSPENDED; - - /* NB: every possible DSTATE value should be listed in this switch */ - switch (cinfo->global_state) { - case DSTATE_START: - /* Start-of-datastream actions: reset appropriate modules */ - (*cinfo->inputctl->reset_input_controller) (cinfo); - /* Initialize application's data source module */ - (*cinfo->src->init_source) (cinfo); - cinfo->global_state = DSTATE_INHEADER; - /*FALLTHROUGH*/ - case DSTATE_INHEADER: - retcode = (*cinfo->inputctl->consume_input) (cinfo); - if (retcode == JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */ - /* Set up default parameters based on header data */ - default_decompress_parms(cinfo); - /* Set global state: ready for start_decompress */ - cinfo->global_state = DSTATE_READY; - } - break; - case DSTATE_READY: - /* Can't advance past first SOS until start_decompress is called */ - retcode = JPEG_REACHED_SOS; - break; - case DSTATE_PRELOAD: - case DSTATE_PRESCAN: - case DSTATE_SCANNING: - case DSTATE_RAW_OK: - case DSTATE_BUFIMAGE: - case DSTATE_BUFPOST: - case DSTATE_STOPPING: - retcode = (*cinfo->inputctl->consume_input) (cinfo); - break; - default: - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - } - return retcode; -} - - -/* - * Have we finished reading the input file? - */ - -GLOBAL(boolean) -jpeg_input_complete (j_decompress_ptr cinfo) -{ - /* Check for valid jpeg object */ - if (cinfo->global_state < DSTATE_START || - cinfo->global_state > DSTATE_STOPPING) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - return cinfo->inputctl->eoi_reached; -} - - -/* - * Is there more than one scan? - */ - -GLOBAL(boolean) -jpeg_has_multiple_scans (j_decompress_ptr cinfo) -{ - /* Only valid after jpeg_read_header completes */ - if (cinfo->global_state < DSTATE_READY || - cinfo->global_state > DSTATE_STOPPING) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - return cinfo->inputctl->has_multiple_scans; -} - - -/* - * Finish JPEG decompression. - * - * This will normally just verify the file trailer and release temp storage. - * - * Returns FALSE if suspended. The return value need be inspected only if - * a suspending data source is used. - */ - -GLOBAL(boolean) -jpeg_finish_decompress (j_decompress_ptr cinfo) -{ - if ((cinfo->global_state == DSTATE_SCANNING || - cinfo->global_state == DSTATE_RAW_OK) && ! cinfo->buffered_image) { - /* Terminate final pass of non-buffered mode */ - if (cinfo->output_scanline < cinfo->output_height) - ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); - (*cinfo->master->finish_output_pass) (cinfo); - cinfo->global_state = DSTATE_STOPPING; - } else if (cinfo->global_state == DSTATE_BUFIMAGE) { - /* Finishing after a buffered-image operation */ - cinfo->global_state = DSTATE_STOPPING; - } else if (cinfo->global_state != DSTATE_STOPPING) { - /* STOPPING = repeat call after a suspension, anything else is error */ - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - } - /* Read until EOI */ - while (! cinfo->inputctl->eoi_reached) { - if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED) - return FALSE; /* Suspend, come back later */ - } - /* Do final cleanup */ - (*cinfo->src->term_source) (cinfo); - /* We can use jpeg_abort to release memory and reset global_state */ - jpeg_abort((j_common_ptr) cinfo); - return TRUE; -} diff --git a/project/jni/jpeg/jdapistd.c b/project/jni/jpeg/jdapistd.c deleted file mode 100644 index c8e3fa0c3..000000000 --- a/project/jni/jpeg/jdapistd.c +++ /dev/null @@ -1,275 +0,0 @@ -/* - * jdapistd.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains application interface code for the decompression half - * of the JPEG library. These are the "standard" API routines that are - * used in the normal full-decompression case. They are not used by a - * transcoding-only application. Note that if an application links in - * jpeg_start_decompress, it will end up linking in the entire decompressor. - * We thus must separate this file from jdapimin.c to avoid linking the - * whole decompression library into a transcoder. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Forward declarations */ -LOCAL(boolean) output_pass_setup JPP((j_decompress_ptr cinfo)); - - -/* - * Decompression initialization. - * jpeg_read_header must be completed before calling this. - * - * If a multipass operating mode was selected, this will do all but the - * last pass, and thus may take a great deal of time. - * - * Returns FALSE if suspended. The return value need be inspected only if - * a suspending data source is used. - */ - -GLOBAL(boolean) -jpeg_start_decompress (j_decompress_ptr cinfo) -{ - if (cinfo->global_state == DSTATE_READY) { - /* First call: initialize master control, select active modules */ - jinit_master_decompress(cinfo); - if (cinfo->buffered_image) { - /* No more work here; expecting jpeg_start_output next */ - cinfo->global_state = DSTATE_BUFIMAGE; - return TRUE; - } - cinfo->global_state = DSTATE_PRELOAD; - } - if (cinfo->global_state == DSTATE_PRELOAD) { - /* If file has multiple scans, absorb them all into the coef buffer */ - if (cinfo->inputctl->has_multiple_scans) { -#ifdef D_MULTISCAN_FILES_SUPPORTED - for (;;) { - int retcode; - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - /* Absorb some more input */ - retcode = (*cinfo->inputctl->consume_input) (cinfo); - if (retcode == JPEG_SUSPENDED) - return FALSE; - if (retcode == JPEG_REACHED_EOI) - break; - /* Advance progress counter if appropriate */ - if (cinfo->progress != NULL && - (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) { - if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) { - /* jdmaster underestimated number of scans; ratchet up one scan */ - cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows; - } - } - } -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif /* D_MULTISCAN_FILES_SUPPORTED */ - } - cinfo->output_scan_number = cinfo->input_scan_number; - } else if (cinfo->global_state != DSTATE_PRESCAN) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - /* Perform any dummy output passes, and set up for the final pass */ - return output_pass_setup(cinfo); -} - - -/* - * Set up for an output pass, and perform any dummy pass(es) needed. - * Common subroutine for jpeg_start_decompress and jpeg_start_output. - * Entry: global_state = DSTATE_PRESCAN only if previously suspended. - * Exit: If done, returns TRUE and sets global_state for proper output mode. - * If suspended, returns FALSE and sets global_state = DSTATE_PRESCAN. - */ - -LOCAL(boolean) -output_pass_setup (j_decompress_ptr cinfo) -{ - if (cinfo->global_state != DSTATE_PRESCAN) { - /* First call: do pass setup */ - (*cinfo->master->prepare_for_output_pass) (cinfo); - cinfo->output_scanline = 0; - cinfo->global_state = DSTATE_PRESCAN; - } - /* Loop over any required dummy passes */ - while (cinfo->master->is_dummy_pass) { -#ifdef QUANT_2PASS_SUPPORTED - /* Crank through the dummy pass */ - while (cinfo->output_scanline < cinfo->output_height) { - JDIMENSION last_scanline; - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) { - cinfo->progress->pass_counter = (long) cinfo->output_scanline; - cinfo->progress->pass_limit = (long) cinfo->output_height; - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - } - /* Process some data */ - last_scanline = cinfo->output_scanline; - (*cinfo->main->process_data) (cinfo, (JSAMPARRAY) NULL, - &cinfo->output_scanline, (JDIMENSION) 0); - if (cinfo->output_scanline == last_scanline) - return FALSE; /* No progress made, must suspend */ - } - /* Finish up dummy pass, and set up for another one */ - (*cinfo->master->finish_output_pass) (cinfo); - (*cinfo->master->prepare_for_output_pass) (cinfo); - cinfo->output_scanline = 0; -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif /* QUANT_2PASS_SUPPORTED */ - } - /* Ready for application to drive output pass through - * jpeg_read_scanlines or jpeg_read_raw_data. - */ - cinfo->global_state = cinfo->raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING; - return TRUE; -} - - -/* - * Read some scanlines of data from the JPEG decompressor. - * - * The return value will be the number of lines actually read. - * This may be less than the number requested in several cases, - * including bottom of image, data source suspension, and operating - * modes that emit multiple scanlines at a time. - * - * Note: we warn about excess calls to jpeg_read_scanlines() since - * this likely signals an application programmer error. However, - * an oversize buffer (max_lines > scanlines remaining) is not an error. - */ - -GLOBAL(JDIMENSION) -jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines, - JDIMENSION max_lines) -{ - JDIMENSION row_ctr; - - if (cinfo->global_state != DSTATE_SCANNING) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - if (cinfo->output_scanline >= cinfo->output_height) { - WARNMS(cinfo, JWRN_TOO_MUCH_DATA); - return 0; - } - - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) { - cinfo->progress->pass_counter = (long) cinfo->output_scanline; - cinfo->progress->pass_limit = (long) cinfo->output_height; - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - } - - /* Process some data */ - row_ctr = 0; - (*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines); - cinfo->output_scanline += row_ctr; - return row_ctr; -} - - -/* - * Alternate entry point to read raw data. - * Processes exactly one iMCU row per call, unless suspended. - */ - -GLOBAL(JDIMENSION) -jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data, - JDIMENSION max_lines) -{ - JDIMENSION lines_per_iMCU_row; - - if (cinfo->global_state != DSTATE_RAW_OK) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - if (cinfo->output_scanline >= cinfo->output_height) { - WARNMS(cinfo, JWRN_TOO_MUCH_DATA); - return 0; - } - - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) { - cinfo->progress->pass_counter = (long) cinfo->output_scanline; - cinfo->progress->pass_limit = (long) cinfo->output_height; - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - } - - /* Verify that at least one iMCU row can be returned. */ - lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size; - if (max_lines < lines_per_iMCU_row) - ERREXIT(cinfo, JERR_BUFFER_SIZE); - - /* Decompress directly into user's buffer. */ - if (! (*cinfo->coef->decompress_data) (cinfo, data)) - return 0; /* suspension forced, can do nothing more */ - - /* OK, we processed one iMCU row. */ - cinfo->output_scanline += lines_per_iMCU_row; - return lines_per_iMCU_row; -} - - -/* Additional entry points for buffered-image mode. */ - -#ifdef D_MULTISCAN_FILES_SUPPORTED - -/* - * Initialize for an output pass in buffered-image mode. - */ - -GLOBAL(boolean) -jpeg_start_output (j_decompress_ptr cinfo, int scan_number) -{ - if (cinfo->global_state != DSTATE_BUFIMAGE && - cinfo->global_state != DSTATE_PRESCAN) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - /* Limit scan number to valid range */ - if (scan_number <= 0) - scan_number = 1; - if (cinfo->inputctl->eoi_reached && - scan_number > cinfo->input_scan_number) - scan_number = cinfo->input_scan_number; - cinfo->output_scan_number = scan_number; - /* Perform any dummy output passes, and set up for the real pass */ - return output_pass_setup(cinfo); -} - - -/* - * Finish up after an output pass in buffered-image mode. - * - * Returns FALSE if suspended. The return value need be inspected only if - * a suspending data source is used. - */ - -GLOBAL(boolean) -jpeg_finish_output (j_decompress_ptr cinfo) -{ - if ((cinfo->global_state == DSTATE_SCANNING || - cinfo->global_state == DSTATE_RAW_OK) && cinfo->buffered_image) { - /* Terminate this pass. */ - /* We do not require the whole pass to have been completed. */ - (*cinfo->master->finish_output_pass) (cinfo); - cinfo->global_state = DSTATE_BUFPOST; - } else if (cinfo->global_state != DSTATE_BUFPOST) { - /* BUFPOST = repeat call after a suspension, anything else is error */ - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - } - /* Read markers looking for SOS or EOI */ - while (cinfo->input_scan_number <= cinfo->output_scan_number && - ! cinfo->inputctl->eoi_reached) { - if ((*cinfo->inputctl->consume_input) (cinfo) == JPEG_SUSPENDED) - return FALSE; /* Suspend, come back later */ - } - cinfo->global_state = DSTATE_BUFIMAGE; - return TRUE; -} - -#endif /* D_MULTISCAN_FILES_SUPPORTED */ diff --git a/project/jni/jpeg/jdatadst.c b/project/jni/jpeg/jdatadst.c deleted file mode 100644 index a8f6fb0e0..000000000 --- a/project/jni/jpeg/jdatadst.c +++ /dev/null @@ -1,151 +0,0 @@ -/* - * jdatadst.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains compression data destination routines for the case of - * emitting JPEG data to a file (or any stdio stream). While these routines - * are sufficient for most applications, some will want to use a different - * destination manager. - * IMPORTANT: we assume that fwrite() will correctly transcribe an array of - * JOCTETs into 8-bit-wide elements on external storage. If char is wider - * than 8 bits on your machine, you may need to do some tweaking. - */ - -/* this is not a core library module, so it doesn't define JPEG_INTERNALS */ -#include "jinclude.h" -#include "jpeglib.h" -#include "jerror.h" - - -/* Expanded data destination object for stdio output */ - -typedef struct { - struct jpeg_destination_mgr pub; /* public fields */ - - FILE * outfile; /* target stream */ - JOCTET * buffer; /* start of buffer */ -} my_destination_mgr; - -typedef my_destination_mgr * my_dest_ptr; - -#define OUTPUT_BUF_SIZE 4096 /* choose an efficiently fwrite'able size */ - - -/* - * Initialize destination --- called by jpeg_start_compress - * before any data is actually written. - */ - -METHODDEF(void) -init_destination (j_compress_ptr cinfo) -{ - my_dest_ptr dest = (my_dest_ptr) cinfo->dest; - - /* Allocate the output buffer --- it will be released when done with image */ - dest->buffer = (JOCTET *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - OUTPUT_BUF_SIZE * SIZEOF(JOCTET)); - - dest->pub.next_output_byte = dest->buffer; - dest->pub.free_in_buffer = OUTPUT_BUF_SIZE; -} - - -/* - * Empty the output buffer --- called whenever buffer fills up. - * - * In typical applications, this should write the entire output buffer - * (ignoring the current state of next_output_byte & free_in_buffer), - * reset the pointer & count to the start of the buffer, and return TRUE - * indicating that the buffer has been dumped. - * - * In applications that need to be able to suspend compression due to output - * overrun, a FALSE return indicates that the buffer cannot be emptied now. - * In this situation, the compressor will return to its caller (possibly with - * an indication that it has not accepted all the supplied scanlines). The - * application should resume compression after it has made more room in the - * output buffer. Note that there are substantial restrictions on the use of - * suspension --- see the documentation. - * - * When suspending, the compressor will back up to a convenient restart point - * (typically the start of the current MCU). next_output_byte & free_in_buffer - * indicate where the restart point will be if the current call returns FALSE. - * Data beyond this point will be regenerated after resumption, so do not - * write it out when emptying the buffer externally. - */ - -METHODDEF(boolean) -empty_output_buffer (j_compress_ptr cinfo) -{ - my_dest_ptr dest = (my_dest_ptr) cinfo->dest; - - if (JFWRITE(dest->outfile, dest->buffer, OUTPUT_BUF_SIZE) != - (size_t) OUTPUT_BUF_SIZE) - ERREXIT(cinfo, JERR_FILE_WRITE); - - dest->pub.next_output_byte = dest->buffer; - dest->pub.free_in_buffer = OUTPUT_BUF_SIZE; - - return TRUE; -} - - -/* - * Terminate destination --- called by jpeg_finish_compress - * after all data has been written. Usually needs to flush buffer. - * - * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding - * application must deal with any cleanup that should happen even - * for error exit. - */ - -METHODDEF(void) -term_destination (j_compress_ptr cinfo) -{ - my_dest_ptr dest = (my_dest_ptr) cinfo->dest; - size_t datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer; - - /* Write any data remaining in the buffer */ - if (datacount > 0) { - if (JFWRITE(dest->outfile, dest->buffer, datacount) != datacount) - ERREXIT(cinfo, JERR_FILE_WRITE); - } - fflush(dest->outfile); - /* Make sure we wrote the output file OK */ - if (ferror(dest->outfile)) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * Prepare for output to a stdio stream. - * The caller must have already opened the stream, and is responsible - * for closing it after finishing compression. - */ - -GLOBAL(void) -jpeg_stdio_dest (j_compress_ptr cinfo, FILE * outfile) -{ - my_dest_ptr dest; - - /* The destination object is made permanent so that multiple JPEG images - * can be written to the same file without re-executing jpeg_stdio_dest. - * This makes it dangerous to use this manager and a different destination - * manager serially with the same JPEG object, because their private object - * sizes may be different. Caveat programmer. - */ - if (cinfo->dest == NULL) { /* first time for this JPEG object? */ - cinfo->dest = (struct jpeg_destination_mgr *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - SIZEOF(my_destination_mgr)); - } - - dest = (my_dest_ptr) cinfo->dest; - dest->pub.init_destination = init_destination; - dest->pub.empty_output_buffer = empty_output_buffer; - dest->pub.term_destination = term_destination; - dest->outfile = outfile; -} diff --git a/project/jni/jpeg/jdatasrc.c b/project/jni/jpeg/jdatasrc.c deleted file mode 100644 index edc752bf5..000000000 --- a/project/jni/jpeg/jdatasrc.c +++ /dev/null @@ -1,212 +0,0 @@ -/* - * jdatasrc.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains decompression data source routines for the case of - * reading JPEG data from a file (or any stdio stream). While these routines - * are sufficient for most applications, some will want to use a different - * source manager. - * IMPORTANT: we assume that fread() will correctly transcribe an array of - * JOCTETs from 8-bit-wide elements on external storage. If char is wider - * than 8 bits on your machine, you may need to do some tweaking. - */ - -/* this is not a core library module, so it doesn't define JPEG_INTERNALS */ -#include "jinclude.h" -#include "jpeglib.h" -#include "jerror.h" - - -/* Expanded data source object for stdio input */ - -typedef struct { - struct jpeg_source_mgr pub; /* public fields */ - - FILE * infile; /* source stream */ - JOCTET * buffer; /* start of buffer */ - boolean start_of_file; /* have we gotten any data yet? */ -} my_source_mgr; - -typedef my_source_mgr * my_src_ptr; - -#define INPUT_BUF_SIZE 4096 /* choose an efficiently fread'able size */ - - -/* - * Initialize source --- called by jpeg_read_header - * before any data is actually read. - */ - -METHODDEF(void) -init_source (j_decompress_ptr cinfo) -{ - my_src_ptr src = (my_src_ptr) cinfo->src; - - /* We reset the empty-input-file flag for each image, - * but we don't clear the input buffer. - * This is correct behavior for reading a series of images from one source. - */ - src->start_of_file = TRUE; -} - - -/* - * Fill the input buffer --- called whenever buffer is emptied. - * - * In typical applications, this should read fresh data into the buffer - * (ignoring the current state of next_input_byte & bytes_in_buffer), - * reset the pointer & count to the start of the buffer, and return TRUE - * indicating that the buffer has been reloaded. It is not necessary to - * fill the buffer entirely, only to obtain at least one more byte. - * - * There is no such thing as an EOF return. If the end of the file has been - * reached, the routine has a choice of ERREXIT() or inserting fake data into - * the buffer. In most cases, generating a warning message and inserting a - * fake EOI marker is the best course of action --- this will allow the - * decompressor to output however much of the image is there. However, - * the resulting error message is misleading if the real problem is an empty - * input file, so we handle that case specially. - * - * In applications that need to be able to suspend compression due to input - * not being available yet, a FALSE return indicates that no more data can be - * obtained right now, but more may be forthcoming later. In this situation, - * the decompressor will return to its caller (with an indication of the - * number of scanlines it has read, if any). The application should resume - * decompression after it has loaded more data into the input buffer. Note - * that there are substantial restrictions on the use of suspension --- see - * the documentation. - * - * When suspending, the decompressor will back up to a convenient restart point - * (typically the start of the current MCU). next_input_byte & bytes_in_buffer - * indicate where the restart point will be if the current call returns FALSE. - * Data beyond this point must be rescanned after resumption, so move it to - * the front of the buffer rather than discarding it. - */ - -METHODDEF(boolean) -fill_input_buffer (j_decompress_ptr cinfo) -{ - my_src_ptr src = (my_src_ptr) cinfo->src; - size_t nbytes; - - nbytes = JFREAD(src->infile, src->buffer, INPUT_BUF_SIZE); - - if (nbytes <= 0) { - if (src->start_of_file) /* Treat empty input file as fatal error */ - ERREXIT(cinfo, JERR_INPUT_EMPTY); - WARNMS(cinfo, JWRN_JPEG_EOF); - /* Insert a fake EOI marker */ - src->buffer[0] = (JOCTET) 0xFF; - src->buffer[1] = (JOCTET) JPEG_EOI; - nbytes = 2; - } - - src->pub.next_input_byte = src->buffer; - src->pub.bytes_in_buffer = nbytes; - src->start_of_file = FALSE; - - return TRUE; -} - - -/* - * Skip data --- used to skip over a potentially large amount of - * uninteresting data (such as an APPn marker). - * - * Writers of suspendable-input applications must note that skip_input_data - * is not granted the right to give a suspension return. If the skip extends - * beyond the data currently in the buffer, the buffer can be marked empty so - * that the next read will cause a fill_input_buffer call that can suspend. - * Arranging for additional bytes to be discarded before reloading the input - * buffer is the application writer's problem. - */ - -METHODDEF(void) -skip_input_data (j_decompress_ptr cinfo, long num_bytes) -{ - my_src_ptr src = (my_src_ptr) cinfo->src; - - /* Just a dumb implementation for now. Could use fseek() except - * it doesn't work on pipes. Not clear that being smart is worth - * any trouble anyway --- large skips are infrequent. - */ - if (num_bytes > 0) { - while (num_bytes > (long) src->pub.bytes_in_buffer) { - num_bytes -= (long) src->pub.bytes_in_buffer; - (void) fill_input_buffer(cinfo); - /* note we assume that fill_input_buffer will never return FALSE, - * so suspension need not be handled. - */ - } - src->pub.next_input_byte += (size_t) num_bytes; - src->pub.bytes_in_buffer -= (size_t) num_bytes; - } -} - - -/* - * An additional method that can be provided by data source modules is the - * resync_to_restart method for error recovery in the presence of RST markers. - * For the moment, this source module just uses the default resync method - * provided by the JPEG library. That method assumes that no backtracking - * is possible. - */ - - -/* - * Terminate source --- called by jpeg_finish_decompress - * after all data has been read. Often a no-op. - * - * NB: *not* called by jpeg_abort or jpeg_destroy; surrounding - * application must deal with any cleanup that should happen even - * for error exit. - */ - -METHODDEF(void) -term_source (j_decompress_ptr cinfo) -{ - /* no work necessary here */ -} - - -/* - * Prepare for input from a stdio stream. - * The caller must have already opened the stream, and is responsible - * for closing it after finishing decompression. - */ - -GLOBAL(void) -jpeg_stdio_src (j_decompress_ptr cinfo, FILE * infile) -{ - my_src_ptr src; - - /* The source object and input buffer are made permanent so that a series - * of JPEG images can be read from the same file by calling jpeg_stdio_src - * only before the first one. (If we discarded the buffer at the end of - * one image, we'd likely lose the start of the next one.) - * This makes it unsafe to use this manager and a different source - * manager serially with the same JPEG object. Caveat programmer. - */ - if (cinfo->src == NULL) { /* first time for this JPEG object? */ - cinfo->src = (struct jpeg_source_mgr *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - SIZEOF(my_source_mgr)); - src = (my_src_ptr) cinfo->src; - src->buffer = (JOCTET *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - INPUT_BUF_SIZE * SIZEOF(JOCTET)); - } - - src = (my_src_ptr) cinfo->src; - src->pub.init_source = init_source; - src->pub.fill_input_buffer = fill_input_buffer; - src->pub.skip_input_data = skip_input_data; - src->pub.resync_to_restart = jpeg_resync_to_restart; /* use default method */ - src->pub.term_source = term_source; - src->infile = infile; - src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */ - src->pub.next_input_byte = NULL; /* until buffer loaded */ -} diff --git a/project/jni/jpeg/jdcoefct.c b/project/jni/jpeg/jdcoefct.c deleted file mode 100644 index 4938d20fc..000000000 --- a/project/jni/jpeg/jdcoefct.c +++ /dev/null @@ -1,736 +0,0 @@ -/* - * jdcoefct.c - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the coefficient buffer controller for decompression. - * This controller is the top level of the JPEG decompressor proper. - * The coefficient buffer lies between entropy decoding and inverse-DCT steps. - * - * In buffered-image mode, this controller is the interface between - * input-oriented processing and output-oriented processing. - * Also, the input side (only) is used when reading a file for transcoding. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - -/* Block smoothing is only applicable for progressive JPEG, so: */ -#ifndef D_PROGRESSIVE_SUPPORTED -#undef BLOCK_SMOOTHING_SUPPORTED -#endif - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_d_coef_controller pub; /* public fields */ - - /* These variables keep track of the current location of the input side. */ - /* cinfo->input_iMCU_row is also used for this. */ - JDIMENSION MCU_ctr; /* counts MCUs processed in current row */ - int MCU_vert_offset; /* counts MCU rows within iMCU row */ - int MCU_rows_per_iMCU_row; /* number of such rows needed */ - - /* The output side's location is represented by cinfo->output_iMCU_row. */ - - /* In single-pass modes, it's sufficient to buffer just one MCU. - * We allocate a workspace of D_MAX_BLOCKS_IN_MCU coefficient blocks, - * and let the entropy decoder write into that workspace each time. - * (On 80x86, the workspace is FAR even though it's not really very big; - * this is to keep the module interfaces unchanged when a large coefficient - * buffer is necessary.) - * In multi-pass modes, this array points to the current MCU's blocks - * within the virtual arrays; it is used only by the input side. - */ - JBLOCKROW MCU_buffer[D_MAX_BLOCKS_IN_MCU]; - -#ifdef D_MULTISCAN_FILES_SUPPORTED - /* In multi-pass modes, we need a virtual block array for each component. */ - jvirt_barray_ptr whole_image[MAX_COMPONENTS]; -#endif - -#ifdef BLOCK_SMOOTHING_SUPPORTED - /* When doing block smoothing, we latch coefficient Al values here */ - int * coef_bits_latch; -#define SAVED_COEFS 6 /* we save coef_bits[0..5] */ -#endif -} my_coef_controller; - -typedef my_coef_controller * my_coef_ptr; - -/* Forward declarations */ -METHODDEF(int) decompress_onepass - JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf)); -#ifdef D_MULTISCAN_FILES_SUPPORTED -METHODDEF(int) decompress_data - JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf)); -#endif -#ifdef BLOCK_SMOOTHING_SUPPORTED -LOCAL(boolean) smoothing_ok JPP((j_decompress_ptr cinfo)); -METHODDEF(int) decompress_smooth_data - JPP((j_decompress_ptr cinfo, JSAMPIMAGE output_buf)); -#endif - - -LOCAL(void) -start_iMCU_row (j_decompress_ptr cinfo) -/* Reset within-iMCU-row counters for a new row (input side) */ -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - - /* In an interleaved scan, an MCU row is the same as an iMCU row. - * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows. - * But at the bottom of the image, process only what's left. - */ - if (cinfo->comps_in_scan > 1) { - coef->MCU_rows_per_iMCU_row = 1; - } else { - if (cinfo->input_iMCU_row < (cinfo->total_iMCU_rows-1)) - coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor; - else - coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height; - } - - coef->MCU_ctr = 0; - coef->MCU_vert_offset = 0; -} - - -/* - * Initialize for an input processing pass. - */ - -METHODDEF(void) -start_input_pass (j_decompress_ptr cinfo) -{ - cinfo->input_iMCU_row = 0; - start_iMCU_row(cinfo); -} - - -/* - * Initialize for an output processing pass. - */ - -METHODDEF(void) -start_output_pass (j_decompress_ptr cinfo) -{ -#ifdef BLOCK_SMOOTHING_SUPPORTED - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - - /* If multipass, check to see whether to use block smoothing on this pass */ - if (coef->pub.coef_arrays != NULL) { - if (cinfo->do_block_smoothing && smoothing_ok(cinfo)) - coef->pub.decompress_data = decompress_smooth_data; - else - coef->pub.decompress_data = decompress_data; - } -#endif - cinfo->output_iMCU_row = 0; -} - - -/* - * Decompress and return some data in the single-pass case. - * Always attempts to emit one fully interleaved MCU row ("iMCU" row). - * Input and output must run in lockstep since we have only a one-MCU buffer. - * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED. - * - * NB: output_buf contains a plane for each component in image, - * which we index according to the component's SOF position. - */ - -METHODDEF(int) -decompress_onepass (j_decompress_ptr cinfo, JSAMPIMAGE output_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION MCU_col_num; /* index of current MCU within row */ - JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1; - JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; - int blkn, ci, xindex, yindex, yoffset, useful_width; - JSAMPARRAY output_ptr; - JDIMENSION start_col, output_col; - jpeg_component_info *compptr; - inverse_DCT_method_ptr inverse_DCT; - - /* Loop to process as much as one whole iMCU row */ - for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; - yoffset++) { - for (MCU_col_num = coef->MCU_ctr; MCU_col_num <= last_MCU_col; - MCU_col_num++) { - /* Try to fetch an MCU. Entropy decoder expects buffer to be zeroed. */ - jzero_far((void FAR *) coef->MCU_buffer[0], - (size_t) (cinfo->blocks_in_MCU * SIZEOF(JBLOCK))); - if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) { - /* Suspension forced; update state counters and exit */ - coef->MCU_vert_offset = yoffset; - coef->MCU_ctr = MCU_col_num; - return JPEG_SUSPENDED; - } - /* Determine where data should go in output_buf and do the IDCT thing. - * We skip dummy blocks at the right and bottom edges (but blkn gets - * incremented past them!). Note the inner loop relies on having - * allocated the MCU_buffer[] blocks sequentially. - */ - blkn = 0; /* index of current DCT block within MCU */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - /* Don't bother to IDCT an uninteresting component. */ - if (! compptr->component_needed) { - blkn += compptr->MCU_blocks; - continue; - } - inverse_DCT = cinfo->idct->inverse_DCT[compptr->component_index]; - useful_width = (MCU_col_num < last_MCU_col) ? compptr->MCU_width - : compptr->last_col_width; - output_ptr = output_buf[compptr->component_index] + - yoffset * compptr->DCT_scaled_size; - start_col = MCU_col_num * compptr->MCU_sample_width; - for (yindex = 0; yindex < compptr->MCU_height; yindex++) { - if (cinfo->input_iMCU_row < last_iMCU_row || - yoffset+yindex < compptr->last_row_height) { - output_col = start_col; - for (xindex = 0; xindex < useful_width; xindex++) { - (*inverse_DCT) (cinfo, compptr, - (JCOEFPTR) coef->MCU_buffer[blkn+xindex], - output_ptr, output_col); - output_col += compptr->DCT_scaled_size; - } - } - blkn += compptr->MCU_width; - output_ptr += compptr->DCT_scaled_size; - } - } - } - /* Completed an MCU row, but perhaps not an iMCU row */ - coef->MCU_ctr = 0; - } - /* Completed the iMCU row, advance counters for next one */ - cinfo->output_iMCU_row++; - if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) { - start_iMCU_row(cinfo); - return JPEG_ROW_COMPLETED; - } - /* Completed the scan */ - (*cinfo->inputctl->finish_input_pass) (cinfo); - return JPEG_SCAN_COMPLETED; -} - - -/* - * Dummy consume-input routine for single-pass operation. - */ - -METHODDEF(int) -dummy_consume_data (j_decompress_ptr cinfo) -{ - return JPEG_SUSPENDED; /* Always indicate nothing was done */ -} - - -#ifdef D_MULTISCAN_FILES_SUPPORTED - -/* - * Consume input data and store it in the full-image coefficient buffer. - * We read as much as one fully interleaved MCU row ("iMCU" row) per call, - * ie, v_samp_factor block rows for each component in the scan. - * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED. - */ - -METHODDEF(int) -consume_data (j_decompress_ptr cinfo) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION MCU_col_num; /* index of current MCU within row */ - int blkn, ci, xindex, yindex, yoffset; - JDIMENSION start_col; - JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN]; - JBLOCKROW buffer_ptr; - jpeg_component_info *compptr; - - /* Align the virtual buffers for the components used in this scan. */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - buffer[ci] = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index], - cinfo->input_iMCU_row * compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, TRUE); - /* Note: entropy decoder expects buffer to be zeroed, - * but this is handled automatically by the memory manager - * because we requested a pre-zeroed array. - */ - } - - /* Loop to process one whole iMCU row */ - for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; - yoffset++) { - for (MCU_col_num = coef->MCU_ctr; MCU_col_num < cinfo->MCUs_per_row; - MCU_col_num++) { - /* Construct list of pointers to DCT blocks belonging to this MCU */ - blkn = 0; /* index of current DCT block within MCU */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - start_col = MCU_col_num * compptr->MCU_width; - for (yindex = 0; yindex < compptr->MCU_height; yindex++) { - buffer_ptr = buffer[ci][yindex+yoffset] + start_col; - for (xindex = 0; xindex < compptr->MCU_width; xindex++) { - coef->MCU_buffer[blkn++] = buffer_ptr++; - } - } - } - /* Try to fetch the MCU. */ - if (! (*cinfo->entropy->decode_mcu) (cinfo, coef->MCU_buffer)) { - /* Suspension forced; update state counters and exit */ - coef->MCU_vert_offset = yoffset; - coef->MCU_ctr = MCU_col_num; - return JPEG_SUSPENDED; - } - } - /* Completed an MCU row, but perhaps not an iMCU row */ - coef->MCU_ctr = 0; - } - /* Completed the iMCU row, advance counters for next one */ - if (++(cinfo->input_iMCU_row) < cinfo->total_iMCU_rows) { - start_iMCU_row(cinfo); - return JPEG_ROW_COMPLETED; - } - /* Completed the scan */ - (*cinfo->inputctl->finish_input_pass) (cinfo); - return JPEG_SCAN_COMPLETED; -} - - -/* - * Decompress and return some data in the multi-pass case. - * Always attempts to emit one fully interleaved MCU row ("iMCU" row). - * Return value is JPEG_ROW_COMPLETED, JPEG_SCAN_COMPLETED, or JPEG_SUSPENDED. - * - * NB: output_buf contains a plane for each component in image. - */ - -METHODDEF(int) -decompress_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; - JDIMENSION block_num; - int ci, block_row, block_rows; - JBLOCKARRAY buffer; - JBLOCKROW buffer_ptr; - JSAMPARRAY output_ptr; - JDIMENSION output_col; - jpeg_component_info *compptr; - inverse_DCT_method_ptr inverse_DCT; - - /* Force some input to be done if we are getting ahead of the input. */ - while (cinfo->input_scan_number < cinfo->output_scan_number || - (cinfo->input_scan_number == cinfo->output_scan_number && - cinfo->input_iMCU_row <= cinfo->output_iMCU_row)) { - if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED) - return JPEG_SUSPENDED; - } - - /* OK, output from the virtual arrays. */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Don't bother to IDCT an uninteresting component. */ - if (! compptr->component_needed) - continue; - /* Align the virtual buffer for this component. */ - buffer = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[ci], - cinfo->output_iMCU_row * compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, FALSE); - /* Count non-dummy DCT block rows in this iMCU row. */ - if (cinfo->output_iMCU_row < last_iMCU_row) - block_rows = compptr->v_samp_factor; - else { - /* NB: can't use last_row_height here; it is input-side-dependent! */ - block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor); - if (block_rows == 0) block_rows = compptr->v_samp_factor; - } - inverse_DCT = cinfo->idct->inverse_DCT[ci]; - output_ptr = output_buf[ci]; - /* Loop over all DCT blocks to be processed. */ - for (block_row = 0; block_row < block_rows; block_row++) { - buffer_ptr = buffer[block_row]; - output_col = 0; - for (block_num = 0; block_num < compptr->width_in_blocks; block_num++) { - (*inverse_DCT) (cinfo, compptr, (JCOEFPTR) buffer_ptr, - output_ptr, output_col); - buffer_ptr++; - output_col += compptr->DCT_scaled_size; - } - output_ptr += compptr->DCT_scaled_size; - } - } - - if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows) - return JPEG_ROW_COMPLETED; - return JPEG_SCAN_COMPLETED; -} - -#endif /* D_MULTISCAN_FILES_SUPPORTED */ - - -#ifdef BLOCK_SMOOTHING_SUPPORTED - -/* - * This code applies interblock smoothing as described by section K.8 - * of the JPEG standard: the first 5 AC coefficients are estimated from - * the DC values of a DCT block and its 8 neighboring blocks. - * We apply smoothing only for progressive JPEG decoding, and only if - * the coefficients it can estimate are not yet known to full precision. - */ - -/* Natural-order array positions of the first 5 zigzag-order coefficients */ -#define Q01_POS 1 -#define Q10_POS 8 -#define Q20_POS 16 -#define Q11_POS 9 -#define Q02_POS 2 - -/* - * Determine whether block smoothing is applicable and safe. - * We also latch the current states of the coef_bits[] entries for the - * AC coefficients; otherwise, if the input side of the decompressor - * advances into a new scan, we might think the coefficients are known - * more accurately than they really are. - */ - -LOCAL(boolean) -smoothing_ok (j_decompress_ptr cinfo) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - boolean smoothing_useful = FALSE; - int ci, coefi; - jpeg_component_info *compptr; - JQUANT_TBL * qtable; - int * coef_bits; - int * coef_bits_latch; - - if (! cinfo->progressive_mode || cinfo->coef_bits == NULL) - return FALSE; - - /* Allocate latch area if not already done */ - if (coef->coef_bits_latch == NULL) - coef->coef_bits_latch = (int *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->num_components * - (SAVED_COEFS * SIZEOF(int))); - coef_bits_latch = coef->coef_bits_latch; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* All components' quantization values must already be latched. */ - if ((qtable = compptr->quant_table) == NULL) - return FALSE; - /* Verify DC & first 5 AC quantizers are nonzero to avoid zero-divide. */ - if (qtable->quantval[0] == 0 || - qtable->quantval[Q01_POS] == 0 || - qtable->quantval[Q10_POS] == 0 || - qtable->quantval[Q20_POS] == 0 || - qtable->quantval[Q11_POS] == 0 || - qtable->quantval[Q02_POS] == 0) - return FALSE; - /* DC values must be at least partly known for all components. */ - coef_bits = cinfo->coef_bits[ci]; - if (coef_bits[0] < 0) - return FALSE; - /* Block smoothing is helpful if some AC coefficients remain inaccurate. */ - for (coefi = 1; coefi <= 5; coefi++) { - coef_bits_latch[coefi] = coef_bits[coefi]; - if (coef_bits[coefi] != 0) - smoothing_useful = TRUE; - } - coef_bits_latch += SAVED_COEFS; - } - - return smoothing_useful; -} - - -/* - * Variant of decompress_data for use when doing block smoothing. - */ - -METHODDEF(int) -decompress_smooth_data (j_decompress_ptr cinfo, JSAMPIMAGE output_buf) -{ - my_coef_ptr coef = (my_coef_ptr) cinfo->coef; - JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; - JDIMENSION block_num, last_block_column; - int ci, block_row, block_rows, access_rows; - JBLOCKARRAY buffer; - JBLOCKROW buffer_ptr, prev_block_row, next_block_row; - JSAMPARRAY output_ptr; - JDIMENSION output_col; - jpeg_component_info *compptr; - inverse_DCT_method_ptr inverse_DCT; - boolean first_row, last_row; - JBLOCK workspace; - int *coef_bits; - JQUANT_TBL *quanttbl; - INT32 Q00,Q01,Q02,Q10,Q11,Q20, num; - int DC1,DC2,DC3,DC4,DC5,DC6,DC7,DC8,DC9; - int Al, pred; - - /* Force some input to be done if we are getting ahead of the input. */ - while (cinfo->input_scan_number <= cinfo->output_scan_number && - ! cinfo->inputctl->eoi_reached) { - if (cinfo->input_scan_number == cinfo->output_scan_number) { - /* If input is working on current scan, we ordinarily want it to - * have completed the current row. But if input scan is DC, - * we want it to keep one row ahead so that next block row's DC - * values are up to date. - */ - JDIMENSION delta = (cinfo->Ss == 0) ? 1 : 0; - if (cinfo->input_iMCU_row > cinfo->output_iMCU_row+delta) - break; - } - if ((*cinfo->inputctl->consume_input)(cinfo) == JPEG_SUSPENDED) - return JPEG_SUSPENDED; - } - - /* OK, output from the virtual arrays. */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Don't bother to IDCT an uninteresting component. */ - if (! compptr->component_needed) - continue; - /* Count non-dummy DCT block rows in this iMCU row. */ - if (cinfo->output_iMCU_row < last_iMCU_row) { - block_rows = compptr->v_samp_factor; - access_rows = block_rows * 2; /* this and next iMCU row */ - last_row = FALSE; - } else { - /* NB: can't use last_row_height here; it is input-side-dependent! */ - block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor); - if (block_rows == 0) block_rows = compptr->v_samp_factor; - access_rows = block_rows; /* this iMCU row only */ - last_row = TRUE; - } - /* Align the virtual buffer for this component. */ - if (cinfo->output_iMCU_row > 0) { - access_rows += compptr->v_samp_factor; /* prior iMCU row too */ - buffer = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[ci], - (cinfo->output_iMCU_row - 1) * compptr->v_samp_factor, - (JDIMENSION) access_rows, FALSE); - buffer += compptr->v_samp_factor; /* point to current iMCU row */ - first_row = FALSE; - } else { - buffer = (*cinfo->mem->access_virt_barray) - ((j_common_ptr) cinfo, coef->whole_image[ci], - (JDIMENSION) 0, (JDIMENSION) access_rows, FALSE); - first_row = TRUE; - } - /* Fetch component-dependent info */ - coef_bits = coef->coef_bits_latch + (ci * SAVED_COEFS); - quanttbl = compptr->quant_table; - Q00 = quanttbl->quantval[0]; - Q01 = quanttbl->quantval[Q01_POS]; - Q10 = quanttbl->quantval[Q10_POS]; - Q20 = quanttbl->quantval[Q20_POS]; - Q11 = quanttbl->quantval[Q11_POS]; - Q02 = quanttbl->quantval[Q02_POS]; - inverse_DCT = cinfo->idct->inverse_DCT[ci]; - output_ptr = output_buf[ci]; - /* Loop over all DCT blocks to be processed. */ - for (block_row = 0; block_row < block_rows; block_row++) { - buffer_ptr = buffer[block_row]; - if (first_row && block_row == 0) - prev_block_row = buffer_ptr; - else - prev_block_row = buffer[block_row-1]; - if (last_row && block_row == block_rows-1) - next_block_row = buffer_ptr; - else - next_block_row = buffer[block_row+1]; - /* We fetch the surrounding DC values using a sliding-register approach. - * Initialize all nine here so as to do the right thing on narrow pics. - */ - DC1 = DC2 = DC3 = (int) prev_block_row[0][0]; - DC4 = DC5 = DC6 = (int) buffer_ptr[0][0]; - DC7 = DC8 = DC9 = (int) next_block_row[0][0]; - output_col = 0; - last_block_column = compptr->width_in_blocks - 1; - for (block_num = 0; block_num <= last_block_column; block_num++) { - /* Fetch current DCT block into workspace so we can modify it. */ - jcopy_block_row(buffer_ptr, (JBLOCKROW) workspace, (JDIMENSION) 1); - /* Update DC values */ - if (block_num < last_block_column) { - DC3 = (int) prev_block_row[1][0]; - DC6 = (int) buffer_ptr[1][0]; - DC9 = (int) next_block_row[1][0]; - } - /* Compute coefficient estimates per K.8. - * An estimate is applied only if coefficient is still zero, - * and is not known to be fully accurate. - */ - /* AC01 */ - if ((Al=coef_bits[1]) != 0 && workspace[1] == 0) { - num = 36 * Q00 * (DC4 - DC6); - if (num >= 0) { - pred = (int) (((Q01<<7) + num) / (Q01<<8)); - if (Al > 0 && pred >= (1< 0 && pred >= (1<= 0) { - pred = (int) (((Q10<<7) + num) / (Q10<<8)); - if (Al > 0 && pred >= (1< 0 && pred >= (1<= 0) { - pred = (int) (((Q20<<7) + num) / (Q20<<8)); - if (Al > 0 && pred >= (1< 0 && pred >= (1<= 0) { - pred = (int) (((Q11<<7) + num) / (Q11<<8)); - if (Al > 0 && pred >= (1< 0 && pred >= (1<= 0) { - pred = (int) (((Q02<<7) + num) / (Q02<<8)); - if (Al > 0 && pred >= (1< 0 && pred >= (1<DCT_scaled_size; - } - output_ptr += compptr->DCT_scaled_size; - } - } - - if (++(cinfo->output_iMCU_row) < cinfo->total_iMCU_rows) - return JPEG_ROW_COMPLETED; - return JPEG_SCAN_COMPLETED; -} - -#endif /* BLOCK_SMOOTHING_SUPPORTED */ - - -/* - * Initialize coefficient buffer controller. - */ - -GLOBAL(void) -jinit_d_coef_controller (j_decompress_ptr cinfo, boolean need_full_buffer) -{ - my_coef_ptr coef; - - coef = (my_coef_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_coef_controller)); - cinfo->coef = (struct jpeg_d_coef_controller *) coef; - coef->pub.start_input_pass = start_input_pass; - coef->pub.start_output_pass = start_output_pass; -#ifdef BLOCK_SMOOTHING_SUPPORTED - coef->coef_bits_latch = NULL; -#endif - - /* Create the coefficient buffer. */ - if (need_full_buffer) { -#ifdef D_MULTISCAN_FILES_SUPPORTED - /* Allocate a full-image virtual array for each component, */ - /* padded to a multiple of samp_factor DCT blocks in each direction. */ - /* Note we ask for a pre-zeroed array. */ - int ci, access_rows; - jpeg_component_info *compptr; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - access_rows = compptr->v_samp_factor; -#ifdef BLOCK_SMOOTHING_SUPPORTED - /* If block smoothing could be used, need a bigger window */ - if (cinfo->progressive_mode) - access_rows *= 3; -#endif - coef->whole_image[ci] = (*cinfo->mem->request_virt_barray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, TRUE, - (JDIMENSION) jround_up((long) compptr->width_in_blocks, - (long) compptr->h_samp_factor), - (JDIMENSION) jround_up((long) compptr->height_in_blocks, - (long) compptr->v_samp_factor), - (JDIMENSION) access_rows); - } - coef->pub.consume_data = consume_data; - coef->pub.decompress_data = decompress_data; - coef->pub.coef_arrays = coef->whole_image; /* link to virtual arrays */ -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else { - /* We only need a single-MCU buffer. */ - JBLOCKROW buffer; - int i; - - buffer = (JBLOCKROW) - (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, - D_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); - for (i = 0; i < D_MAX_BLOCKS_IN_MCU; i++) { - coef->MCU_buffer[i] = buffer + i; - } - coef->pub.consume_data = dummy_consume_data; - coef->pub.decompress_data = decompress_onepass; - coef->pub.coef_arrays = NULL; /* flag for no virtual arrays */ - } -} diff --git a/project/jni/jpeg/jdcolor.c b/project/jni/jpeg/jdcolor.c deleted file mode 100644 index 202360c76..000000000 --- a/project/jni/jpeg/jdcolor.c +++ /dev/null @@ -1,881 +0,0 @@ -/* - * jdcolor.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains output colorspace conversion routines. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Private subobject */ - -typedef struct { - struct jpeg_color_deconverter pub; /* public fields */ - - /* Private state for YCC->RGB conversion */ - int * Cr_r_tab; /* => table for Cr to R conversion */ - int * Cb_b_tab; /* => table for Cb to B conversion */ - INT32 * Cr_g_tab; /* => table for Cr to G conversion */ - INT32 * Cb_g_tab; /* => table for Cb to G conversion */ -} my_color_deconverter; - -typedef my_color_deconverter * my_cconvert_ptr; - - -#ifdef ANDROID_RGB - -/* Declarations for ordered dithering. - * - * We use 4x4 ordered dither array packed into 32 bits. This array is - * sufficent for dithering RGB_888 to RGB_565. - */ - -#define DITHER_MASK 0x3 -#define DITHER_ROTATE(x) (((x)<<24) | (((x)>>8)&0x00FFFFFF)) -static const INT32 dither_matrix[4] = { - 0x0008020A, - 0x0C040E06, - 0x030B0109, - 0x0F070D05 -}; - -#endif - - -/**************** YCbCr -> RGB conversion: most common case **************/ - -/* - * YCbCr is defined per CCIR 601-1, except that Cb and Cr are - * normalized to the range 0..MAXJSAMPLE rather than -0.5 .. 0.5. - * The conversion equations to be implemented are therefore - * R = Y + 1.40200 * Cr - * G = Y - 0.34414 * Cb - 0.71414 * Cr - * B = Y + 1.77200 * Cb - * where Cb and Cr represent the incoming values less CENTERJSAMPLE. - * (These numbers are derived from TIFF 6.0 section 21, dated 3-June-92.) - * - * To avoid floating-point arithmetic, we represent the fractional constants - * as integers scaled up by 2^16 (about 4 digits precision); we have to divide - * the products by 2^16, with appropriate rounding, to get the correct answer. - * Notice that Y, being an integral input, does not contribute any fraction - * so it need not participate in the rounding. - * - * For even more speed, we avoid doing any multiplications in the inner loop - * by precalculating the constants times Cb and Cr for all possible values. - * For 8-bit JSAMPLEs this is very reasonable (only 256 entries per table); - * for 12-bit samples it is still acceptable. It's not very reasonable for - * 16-bit samples, but if you want lossless storage you shouldn't be changing - * colorspace anyway. - * The Cr=>R and Cb=>B values can be rounded to integers in advance; the - * values for the G calculation are left scaled up, since we must add them - * together before rounding. - */ - -#define SCALEBITS 16 /* speediest right-shift on some machines */ -#define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) -#define FIX(x) ((INT32) ((x) * (1L<RGB colorspace conversion. - */ - -LOCAL(void) -build_ycc_rgb_table (j_decompress_ptr cinfo) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - int i; - INT32 x; - SHIFT_TEMPS - - cconvert->Cr_r_tab = (int *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(int)); - cconvert->Cb_b_tab = (int *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(int)); - cconvert->Cr_g_tab = (INT32 *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(INT32)); - cconvert->Cb_g_tab = (INT32 *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(INT32)); - - for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { - /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ - /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ - /* Cr=>R value is nearest int to 1.40200 * x */ - cconvert->Cr_r_tab[i] = (int) - RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); - /* Cb=>B value is nearest int to 1.77200 * x */ - cconvert->Cb_b_tab[i] = (int) - RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); - /* Cr=>G value is scaled-up -0.71414 * x */ - cconvert->Cr_g_tab[i] = (- FIX(0.71414)) * x; - /* Cb=>G value is scaled-up -0.34414 * x */ - /* We also add in ONE_HALF so that need not do it in inner loop */ - cconvert->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF; - } -} - -/* - * Convert some rows of samples to the output colorspace. - * - * Note that we change from noninterleaved, one-plane-per-component format - * to interleaved-pixel format. The output buffer is therefore three times - * as wide as the input buffer. - * A starting row offset is provided only for the input buffer. The caller - * can easily adjust the passed output_buf value to accommodate any row - * offset required on that side. - */ - -METHODDEF(void) -ycc_rgb_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int y, cb, cr; - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - register int * Crrtab = cconvert->Cr_r_tab; - register int * Cbbtab = cconvert->Cb_b_tab; - register INT32 * Crgtab = cconvert->Cr_g_tab; - register INT32 * Cbgtab = cconvert->Cb_g_tab; - SHIFT_TEMPS - - while (--num_rows >= 0) { - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - for (col = 0; col < num_cols; col++) { - y = GETJSAMPLE(inptr0[col]); - cb = GETJSAMPLE(inptr1[col]); - cr = GETJSAMPLE(inptr2[col]); - /* Range-limiting is essential due to noise introduced by DCT losses. */ - outptr[RGB_RED] = range_limit[y + Crrtab[cr]]; - outptr[RGB_GREEN] = range_limit[y + - ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], - SCALEBITS))]; - outptr[RGB_BLUE] = range_limit[y + Cbbtab[cb]]; - outptr += RGB_PIXELSIZE; - } - } -} - -#ifdef ANDROID_RGB -METHODDEF(void) -ycc_rgba_8888_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int y, cb, cr; - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - register int * Crrtab = cconvert->Cr_r_tab; - register int * Cbbtab = cconvert->Cb_b_tab; - register INT32 * Crgtab = cconvert->Cr_g_tab; - register INT32 * Cbgtab = cconvert->Cb_g_tab; - SHIFT_TEMPS - - while (--num_rows >= 0) { - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - for (col = 0; col < num_cols; col++) { - y = GETJSAMPLE(inptr0[col]); - cb = GETJSAMPLE(inptr1[col]); - cr = GETJSAMPLE(inptr2[col]); - /* Range-limiting is essential due to noise introduced by DCT losses. */ - outptr[RGB_RED] = range_limit[y + Crrtab[cr]]; - outptr[RGB_GREEN] = range_limit[y + - ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], - SCALEBITS))]; - outptr[RGB_BLUE] = range_limit[y + Cbbtab[cb]]; - outptr[RGB_ALPHA] = 0xFF; - outptr += 4; - } - } -} - -METHODDEF(void) -ycc_rgb_565_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int y, cb, cr; - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - register int * Crrtab = cconvert->Cr_r_tab; - register int * Cbbtab = cconvert->Cb_b_tab; - register INT32 * Crgtab = cconvert->Cr_g_tab; - register INT32 * Cbgtab = cconvert->Cb_g_tab; - SHIFT_TEMPS - - while (--num_rows >= 0) { - INT32 rgb; - unsigned int r, g, b; - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - - if (PACK_NEED_ALIGNMENT(outptr)) { - y = GETJSAMPLE(*inptr0++); - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - r = range_limit[y + Crrtab[cr]]; - g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS))]; - b = range_limit[y + Cbbtab[cb]]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - outptr += 2; - num_cols--; - } - for (col = 0; col < (num_cols>>1); col++) { - y = GETJSAMPLE(*inptr0++); - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - r = range_limit[y + Crrtab[cr]]; - g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS))]; - b = range_limit[y + Cbbtab[cb]]; - rgb = PACK_SHORT_565(r,g,b); - - y = GETJSAMPLE(*inptr0++); - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - r = range_limit[y + Crrtab[cr]]; - g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS))]; - b = range_limit[y + Cbbtab[cb]]; - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); - outptr += 4; - } - if (num_cols&1) { - y = GETJSAMPLE(*inptr0); - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - r = range_limit[y + Crrtab[cr]]; - g = range_limit[y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS))]; - b = range_limit[y + Cbbtab[cb]]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - } - } -} - -METHODDEF(void) -ycc_rgb_565D_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int y, cb, cr; - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - register int * Crrtab = cconvert->Cr_r_tab; - register int * Cbbtab = cconvert->Cb_b_tab; - register INT32 * Crgtab = cconvert->Cr_g_tab; - register INT32 * Cbgtab = cconvert->Cb_g_tab; - INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; - SHIFT_TEMPS - - while (--num_rows >= 0) { - INT32 rgb; - unsigned int r, g, b; - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - if (PACK_NEED_ALIGNMENT(outptr)) { - y = GETJSAMPLE(*inptr0++); - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; - g = range_limit[DITHER_565_G(y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS)), d0)]; - b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - outptr += 2; - num_cols--; - } - for (col = 0; col < (num_cols>>1); col++) { - y = GETJSAMPLE(*inptr0++); - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; - g = range_limit[DITHER_565_G(y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS)), d0)]; - b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr0++); - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; - g = range_limit[DITHER_565_G(y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS)), d0)]; - b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); - outptr += 4; - } - if (num_cols&1) { - y = GETJSAMPLE(*inptr0); - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - r = range_limit[DITHER_565_R(y + Crrtab[cr], d0)]; - g = range_limit[DITHER_565_G(y + ((int)RIGHT_SHIFT(Cbgtab[cb]+Crgtab[cr], SCALEBITS)), d0)]; - b = range_limit[DITHER_565_B(y + Cbbtab[cb], d0)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - } - } -} - -#endif - -/**************** Cases other than YCbCr -> RGB(A) **************/ - -#ifdef ANDROID_RGB -METHODDEF(void) -rgb_rgba_8888_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - SHIFT_TEMPS - - while (--num_rows >= 0) { - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - for (col = 0; col < num_cols; col++) { - *outptr++ = *inptr0++; - *outptr++ = *inptr1++; - *outptr++ = *inptr2++; - *outptr++ = 0xFF; - } - } -} - -METHODDEF(void) -rgb_rgb_565_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - SHIFT_TEMPS - - while (--num_rows >= 0) { - INT32 rgb; - unsigned int r, g, b; - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - if (PACK_NEED_ALIGNMENT(outptr)) { - r = GETJSAMPLE(*inptr0++); - g = GETJSAMPLE(*inptr1++); - b = GETJSAMPLE(*inptr2++); - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - outptr += 2; - num_cols--; - } - for (col = 0; col < (num_cols>>1); col++) { - r = GETJSAMPLE(*inptr0++); - g = GETJSAMPLE(*inptr1++); - b = GETJSAMPLE(*inptr2++); - rgb = PACK_SHORT_565(r,g,b); - r = GETJSAMPLE(*inptr0++); - g = GETJSAMPLE(*inptr1++); - b = GETJSAMPLE(*inptr2++); - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); - outptr += 4; - } - if (num_cols&1) { - r = GETJSAMPLE(*inptr0); - g = GETJSAMPLE(*inptr1); - b = GETJSAMPLE(*inptr2); - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - } - } -} - - -METHODDEF(void) -rgb_rgb_565D_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2; - register JDIMENSION col; - register JSAMPLE * range_limit = cinfo->sample_range_limit; - JDIMENSION num_cols = cinfo->output_width; - INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; - SHIFT_TEMPS - - while (--num_rows >= 0) { - INT32 rgb; - unsigned int r, g, b; - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - input_row++; - outptr = *output_buf++; - if (PACK_NEED_ALIGNMENT(outptr)) { - r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0++), d0)]; - g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1++), d0)]; - b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2++), d0)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - outptr += 2; - num_cols--; - } - for (col = 0; col < (num_cols>>1); col++) { - r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0++), d0)]; - g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1++), d0)]; - b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2++), d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_SHORT_565(r,g,b); - r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0++), d0)]; - g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1++), d0)]; - b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2++), d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); - outptr += 4; - } - if (num_cols&1) { - r = range_limit[DITHER_565_R(GETJSAMPLE(*inptr0), d0)]; - g = range_limit[DITHER_565_G(GETJSAMPLE(*inptr1), d0)]; - b = range_limit[DITHER_565_B(GETJSAMPLE(*inptr2), d0)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - } - } -} - -#endif - -/* - * Color conversion for no colorspace change: just copy the data, - * converting from separate-planes to interleaved representation. - */ - -METHODDEF(void) -null_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW inptr, outptr; - register JDIMENSION count; - register int num_components = cinfo->num_components; - JDIMENSION num_cols = cinfo->output_width; - int ci; - - while (--num_rows >= 0) { - for (ci = 0; ci < num_components; ci++) { - inptr = input_buf[ci][input_row]; - outptr = output_buf[0] + ci; - for (count = num_cols; count > 0; count--) { - *outptr = *inptr++; /* needn't bother with GETJSAMPLE() here */ - outptr += num_components; - } - } - input_row++; - output_buf++; - } -} - - -/* - * Color conversion for grayscale: just copy the data. - * This also works for YCbCr -> grayscale conversion, in which - * we just copy the Y (luminance) component and ignore chrominance. - */ - -METHODDEF(void) -grayscale_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - jcopy_sample_rows(input_buf[0], (int) input_row, output_buf, 0, - num_rows, cinfo->output_width); -} - - -/* - * Convert grayscale to RGB: just duplicate the graylevel three times. - * This is provided to support applications that don't want to cope - * with grayscale as a separate case. - */ - -METHODDEF(void) -gray_rgb_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW inptr, outptr; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - - while (--num_rows >= 0) { - inptr = input_buf[0][input_row++]; - outptr = *output_buf++; - for (col = 0; col < num_cols; col++) { - /* We can dispense with GETJSAMPLE() here */ - outptr[RGB_RED] = outptr[RGB_GREEN] = outptr[RGB_BLUE] = inptr[col]; - outptr += RGB_PIXELSIZE; - } - } -} - -#ifdef ANDROID_RGB -METHODDEF(void) -gray_rgba_8888_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW inptr, outptr; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - - while (--num_rows >= 0) { - inptr = input_buf[0][input_row++]; - outptr = *output_buf++; - for (col = 0; col < num_cols; col++) { - /* We can dispense with GETJSAMPLE() here */ - outptr[RGB_RED] = outptr[RGB_GREEN] = outptr[RGB_BLUE] = inptr[col]; - outptr[RGB_ALPHA] = 0xff; - outptr += 4; - } - } -} - -METHODDEF(void) -gray_rgb_565_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW inptr, outptr; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - - while (--num_rows >= 0) { - INT32 rgb; - unsigned int g; - inptr = input_buf[0][input_row++]; - outptr = *output_buf++; - if (PACK_NEED_ALIGNMENT(outptr)) { - g = *inptr++; - rgb = PACK_SHORT_565(g, g, g); - *(INT16*)outptr = rgb; - outptr += 2; - num_cols--; - } - for (col = 0; col < (num_cols>>1); col++) { - g = *inptr++; - rgb = PACK_SHORT_565(g, g, g); - g = *inptr++; - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(g, g, g)); - WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); - outptr += 4; - } - if (num_cols&1) { - g = *inptr; - rgb = PACK_SHORT_565(g, g, g); - *(INT16*)outptr = rgb; - } - } -} - -METHODDEF(void) -gray_rgb_565D_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - register JSAMPROW inptr, outptr; - register JDIMENSION col; - register JSAMPLE * range_limit = cinfo->sample_range_limit; - JDIMENSION num_cols = cinfo->output_width; - INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; - - while (--num_rows >= 0) { - INT32 rgb; - unsigned int g; - inptr = input_buf[0][input_row++]; - outptr = *output_buf++; - if (PACK_NEED_ALIGNMENT(outptr)) { - g = *inptr++; - g = range_limit[DITHER_565_R(g, d0)]; - rgb = PACK_SHORT_565(g, g, g); - *(INT16*)outptr = rgb; - outptr += 2; - num_cols--; - } - for (col = 0; col < (num_cols>>1); col++) { - g = *inptr++; - g = range_limit[DITHER_565_R(g, d0)]; - rgb = PACK_SHORT_565(g, g, g); - d0 = DITHER_ROTATE(d0); - g = *inptr++; - g = range_limit[DITHER_565_R(g, d0)]; - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(g, g, g)); - d0 = DITHER_ROTATE(d0); - WRITE_TWO_ALIGNED_PIXELS(outptr, rgb); - outptr += 4; - } - if (num_cols&1) { - g = *inptr; - g = range_limit[DITHER_565_R(g, d0)]; - rgb = PACK_SHORT_565(g, g, g); - *(INT16*)outptr = rgb; - } - } -} -#endif - -/* - * Adobe-style YCCK->CMYK conversion. - * We convert YCbCr to R=1-C, G=1-M, and B=1-Y using the same - * conversion as above, while passing K (black) unchanged. - * We assume build_ycc_rgb_table has been called. - */ - -METHODDEF(void) -ycck_cmyk_convert (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION input_row, - JSAMPARRAY output_buf, int num_rows) -{ - my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert; - register int y, cb, cr; - register JSAMPROW outptr; - register JSAMPROW inptr0, inptr1, inptr2, inptr3; - register JDIMENSION col; - JDIMENSION num_cols = cinfo->output_width; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - register int * Crrtab = cconvert->Cr_r_tab; - register int * Cbbtab = cconvert->Cb_b_tab; - register INT32 * Crgtab = cconvert->Cr_g_tab; - register INT32 * Cbgtab = cconvert->Cb_g_tab; - SHIFT_TEMPS - - while (--num_rows >= 0) { - inptr0 = input_buf[0][input_row]; - inptr1 = input_buf[1][input_row]; - inptr2 = input_buf[2][input_row]; - inptr3 = input_buf[3][input_row]; - input_row++; - outptr = *output_buf++; - for (col = 0; col < num_cols; col++) { - y = GETJSAMPLE(inptr0[col]); - cb = GETJSAMPLE(inptr1[col]); - cr = GETJSAMPLE(inptr2[col]); - /* Range-limiting is essential due to noise introduced by DCT losses. */ - outptr[0] = range_limit[MAXJSAMPLE - (y + Crrtab[cr])]; /* red */ - outptr[1] = range_limit[MAXJSAMPLE - (y + /* green */ - ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], - SCALEBITS)))]; - outptr[2] = range_limit[MAXJSAMPLE - (y + Cbbtab[cb])]; /* blue */ - /* K passes through unchanged */ - outptr[3] = inptr3[col]; /* don't need GETJSAMPLE here */ - outptr += 4; - } - } -} - - -/* - * Empty method for start_pass. - */ - -METHODDEF(void) -start_pass_dcolor (j_decompress_ptr cinfo) -{ - /* no work needed */ -} - - -/* - * Module initialization routine for output colorspace conversion. - */ - -GLOBAL(void) -jinit_color_deconverter (j_decompress_ptr cinfo) -{ - my_cconvert_ptr cconvert; - int ci; - - cconvert = (my_cconvert_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_color_deconverter)); - cinfo->cconvert = (struct jpeg_color_deconverter *) cconvert; - cconvert->pub.start_pass = start_pass_dcolor; - - /* Make sure num_components agrees with jpeg_color_space */ - switch (cinfo->jpeg_color_space) { - case JCS_GRAYSCALE: - if (cinfo->num_components != 1) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - break; - - case JCS_RGB: - case JCS_YCbCr: - if (cinfo->num_components != 3) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - break; - - case JCS_CMYK: - case JCS_YCCK: - if (cinfo->num_components != 4) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - break; - - default: /* JCS_UNKNOWN can be anything */ - if (cinfo->num_components < 1) - ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); - break; - } - - /* Set out_color_components and conversion method based on requested space. - * Also clear the component_needed flags for any unused components, - * so that earlier pipeline stages can avoid useless computation. - */ - - switch (cinfo->out_color_space) { - case JCS_GRAYSCALE: - cinfo->out_color_components = 1; - if (cinfo->jpeg_color_space == JCS_GRAYSCALE || - cinfo->jpeg_color_space == JCS_YCbCr) { - cconvert->pub.color_convert = grayscale_convert; - /* For color->grayscale conversion, only the Y (0) component is needed */ - for (ci = 1; ci < cinfo->num_components; ci++) - cinfo->comp_info[ci].component_needed = FALSE; - } else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - case JCS_RGB: - cinfo->out_color_components = RGB_PIXELSIZE; - if (cinfo->jpeg_color_space == JCS_YCbCr) { - cconvert->pub.color_convert = ycc_rgb_convert; - build_ycc_rgb_table(cinfo); - } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { - cconvert->pub.color_convert = gray_rgb_convert; - } else if (cinfo->jpeg_color_space == JCS_RGB && RGB_PIXELSIZE == 3) { - cconvert->pub.color_convert = null_convert; - } else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - -#ifdef ANDROID_RGB - case JCS_RGBA_8888: - cinfo->out_color_components = 4; - if (cinfo->jpeg_color_space == JCS_YCbCr) { - cconvert->pub.color_convert = ycc_rgba_8888_convert; - build_ycc_rgb_table(cinfo); - } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { - cconvert->pub.color_convert = gray_rgba_8888_convert; - } else if (cinfo->jpeg_color_space == JCS_RGB) { - cconvert->pub.color_convert = rgb_rgba_8888_convert; - } else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - case JCS_RGB_565: - cinfo->out_color_components = RGB_PIXELSIZE; - if (cinfo->dither_mode == JDITHER_NONE) { - if (cinfo->jpeg_color_space == JCS_YCbCr) { - cconvert->pub.color_convert = ycc_rgb_565_convert; - build_ycc_rgb_table(cinfo); - } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { - cconvert->pub.color_convert = gray_rgb_565_convert; - } else if (cinfo->jpeg_color_space == JCS_RGB) { - cconvert->pub.color_convert = rgb_rgb_565_convert; - } else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - } else { - /* only ordered dither is supported */ - if (cinfo->jpeg_color_space == JCS_YCbCr) { - cconvert->pub.color_convert = ycc_rgb_565D_convert; - build_ycc_rgb_table(cinfo); - } else if (cinfo->jpeg_color_space == JCS_GRAYSCALE) { - cconvert->pub.color_convert = gray_rgb_565D_convert; - } else if (cinfo->jpeg_color_space == JCS_RGB) { - cconvert->pub.color_convert = rgb_rgb_565D_convert; - } else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - } - break; -#endif - - case JCS_CMYK: - cinfo->out_color_components = 4; - if (cinfo->jpeg_color_space == JCS_YCCK) { - cconvert->pub.color_convert = ycck_cmyk_convert; - build_ycc_rgb_table(cinfo); - } else if (cinfo->jpeg_color_space == JCS_CMYK) { - cconvert->pub.color_convert = null_convert; - } else - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - - default: - /* Permit null conversion to same output space */ - if (cinfo->out_color_space == cinfo->jpeg_color_space) { - cinfo->out_color_components = cinfo->num_components; - cconvert->pub.color_convert = null_convert; - } else /* unsupported non-null conversion */ - ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); - break; - } - - if (cinfo->quantize_colors) - cinfo->output_components = 1; /* single colormapped output component */ - else - cinfo->output_components = cinfo->out_color_components; -} diff --git a/project/jni/jpeg/jdct.h b/project/jni/jpeg/jdct.h deleted file mode 100644 index 04192a266..000000000 --- a/project/jni/jpeg/jdct.h +++ /dev/null @@ -1,176 +0,0 @@ -/* - * jdct.h - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This include file contains common declarations for the forward and - * inverse DCT modules. These declarations are private to the DCT managers - * (jcdctmgr.c, jddctmgr.c) and the individual DCT algorithms. - * The individual DCT algorithms are kept in separate files to ease - * machine-dependent tuning (e.g., assembly coding). - */ - - -/* - * A forward DCT routine is given a pointer to a work area of type DCTELEM[]; - * the DCT is to be performed in-place in that buffer. Type DCTELEM is int - * for 8-bit samples, INT32 for 12-bit samples. (NOTE: Floating-point DCT - * implementations use an array of type FAST_FLOAT, instead.) - * The DCT inputs are expected to be signed (range +-CENTERJSAMPLE). - * The DCT outputs are returned scaled up by a factor of 8; they therefore - * have a range of +-8K for 8-bit data, +-128K for 12-bit data. This - * convention improves accuracy in integer implementations and saves some - * work in floating-point ones. - * Quantization of the output coefficients is done by jcdctmgr.c. - */ - -#if BITS_IN_JSAMPLE == 8 -typedef int DCTELEM; /* 16 or 32 bits is fine */ -#else -typedef INT32 DCTELEM; /* must have 32 bits */ -#endif - -typedef JMETHOD(void, forward_DCT_method_ptr, (DCTELEM * data)); -typedef JMETHOD(void, float_DCT_method_ptr, (FAST_FLOAT * data)); - - -/* - * An inverse DCT routine is given a pointer to the input JBLOCK and a pointer - * to an output sample array. The routine must dequantize the input data as - * well as perform the IDCT; for dequantization, it uses the multiplier table - * pointed to by compptr->dct_table. The output data is to be placed into the - * sample array starting at a specified column. (Any row offset needed will - * be applied to the array pointer before it is passed to the IDCT code.) - * Note that the number of samples emitted by the IDCT routine is - * DCT_scaled_size * DCT_scaled_size. - */ - -/* typedef inverse_DCT_method_ptr is declared in jpegint.h */ - -/* - * Each IDCT routine has its own ideas about the best dct_table element type. - */ - -typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */ -#if BITS_IN_JSAMPLE == 8 -typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */ -#define IFAST_SCALE_BITS 2 /* fractional bits in scale factors */ -#else -typedef INT32 IFAST_MULT_TYPE; /* need 32 bits for scaled quantizers */ -#define IFAST_SCALE_BITS 13 /* fractional bits in scale factors */ -#endif -typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */ - - -/* - * Each IDCT routine is responsible for range-limiting its results and - * converting them to unsigned form (0..MAXJSAMPLE). The raw outputs could - * be quite far out of range if the input data is corrupt, so a bulletproof - * range-limiting step is required. We use a mask-and-table-lookup method - * to do the combined operations quickly. See the comments with - * prepare_range_limit_table (in jdmaster.c) for more info. - */ - -#define IDCT_range_limit(cinfo) ((cinfo)->sample_range_limit + CENTERJSAMPLE) - -#define RANGE_MASK (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */ - - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jpeg_fdct_islow jFDislow -#define jpeg_fdct_ifast jFDifast -#define jpeg_fdct_float jFDfloat -#define jpeg_idct_islow jRDislow -#define jpeg_idct_ifast jRDifast -#define jpeg_idct_float jRDfloat -#define jpeg_idct_4x4 jRD4x4 -#define jpeg_idct_2x2 jRD2x2 -#define jpeg_idct_1x1 jRD1x1 -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - -/* Extern declarations for the forward and inverse DCT routines. */ - -EXTERN(void) jpeg_fdct_islow JPP((DCTELEM * data)); -EXTERN(void) jpeg_fdct_ifast JPP((DCTELEM * data)); -EXTERN(void) jpeg_fdct_float JPP((FAST_FLOAT * data)); - -EXTERN(void) jpeg_idct_islow - JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); -EXTERN(void) jpeg_idct_ifast - JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); -EXTERN(void) jpeg_idct_float - JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); -EXTERN(void) jpeg_idct_4x4 - JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); -EXTERN(void) jpeg_idct_2x2 - JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); -EXTERN(void) jpeg_idct_1x1 - JPP((j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col)); - - -/* - * Macros for handling fixed-point arithmetic; these are used by many - * but not all of the DCT/IDCT modules. - * - * All values are expected to be of type INT32. - * Fractional constants are scaled left by CONST_BITS bits. - * CONST_BITS is defined within each module using these macros, - * and may differ from one module to the next. - */ - -#define ONE ((INT32) 1) -#define CONST_SCALE (ONE << CONST_BITS) - -/* Convert a positive real constant to an integer scaled by CONST_SCALE. - * Caution: some C compilers fail to reduce "FIX(constant)" at compile time, - * thus causing a lot of useless floating-point operations at run time. - */ - -#define FIX(x) ((INT32) ((x) * CONST_SCALE + 0.5)) - -/* Descale and correctly round an INT32 value that's scaled by N bits. - * We assume RIGHT_SHIFT rounds towards minus infinity, so adding - * the fudge factor is correct for either sign of X. - */ - -#define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) - -/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. - * This macro is used only when the two inputs will actually be no more than - * 16 bits wide, so that a 16x16->32 bit multiply can be used instead of a - * full 32x32 multiply. This provides a useful speedup on many machines. - * Unfortunately there is no way to specify a 16x16->32 multiply portably - * in C, but some C compilers will do the right thing if you provide the - * correct combination of casts. - */ - -#ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */ -#define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT16) (const))) -#endif -#ifdef SHORTxLCONST_32 /* known to work with Microsoft C 6.0 */ -#define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT32) (const))) -#endif - -#ifndef MULTIPLY16C16 /* default definition */ -#define MULTIPLY16C16(var,const) ((var) * (const)) -#endif - -/* Same except both inputs are variables. */ - -#ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */ -#define MULTIPLY16V16(var1,var2) (((INT16) (var1)) * ((INT16) (var2))) -#endif - -#ifndef MULTIPLY16V16 /* default definition */ -#define MULTIPLY16V16(var1,var2) ((var1) * (var2)) -#endif diff --git a/project/jni/jpeg/jddctmgr.c b/project/jni/jpeg/jddctmgr.c deleted file mode 100644 index bbf8d0e92..000000000 --- a/project/jni/jpeg/jddctmgr.c +++ /dev/null @@ -1,269 +0,0 @@ -/* - * jddctmgr.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the inverse-DCT management logic. - * This code selects a particular IDCT implementation to be used, - * and it performs related housekeeping chores. No code in this file - * is executed per IDCT step, only during output pass setup. - * - * Note that the IDCT routines are responsible for performing coefficient - * dequantization as well as the IDCT proper. This module sets up the - * dequantization multiplier table needed by the IDCT routine. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - - -/* - * The decompressor input side (jdinput.c) saves away the appropriate - * quantization table for each component at the start of the first scan - * involving that component. (This is necessary in order to correctly - * decode files that reuse Q-table slots.) - * When we are ready to make an output pass, the saved Q-table is converted - * to a multiplier table that will actually be used by the IDCT routine. - * The multiplier table contents are IDCT-method-dependent. To support - * application changes in IDCT method between scans, we can remake the - * multiplier tables if necessary. - * In buffered-image mode, the first output pass may occur before any data - * has been seen for some components, and thus before their Q-tables have - * been saved away. To handle this case, multiplier tables are preset - * to zeroes; the result of the IDCT will be a neutral gray level. - */ - - -/* Private subobject for this module */ - -typedef struct { - struct jpeg_inverse_dct pub; /* public fields */ - - /* This array contains the IDCT method code that each multiplier table - * is currently set up for, or -1 if it's not yet set up. - * The actual multiplier tables are pointed to by dct_table in the - * per-component comp_info structures. - */ - int cur_method[MAX_COMPONENTS]; -} my_idct_controller; - -typedef my_idct_controller * my_idct_ptr; - - -/* Allocated multiplier tables: big enough for any supported variant */ - -typedef union { - ISLOW_MULT_TYPE islow_array[DCTSIZE2]; -#ifdef DCT_IFAST_SUPPORTED - IFAST_MULT_TYPE ifast_array[DCTSIZE2]; -#endif -#ifdef DCT_FLOAT_SUPPORTED - FLOAT_MULT_TYPE float_array[DCTSIZE2]; -#endif -} multiplier_table; - - -/* The current scaled-IDCT routines require ISLOW-style multiplier tables, - * so be sure to compile that code if either ISLOW or SCALING is requested. - */ -#ifdef DCT_ISLOW_SUPPORTED -#define PROVIDE_ISLOW_TABLES -#else -#ifdef IDCT_SCALING_SUPPORTED -#define PROVIDE_ISLOW_TABLES -#endif -#endif - - -/* - * Prepare for an output pass. - * Here we select the proper IDCT routine for each component and build - * a matching multiplier table. - */ - -METHODDEF(void) -start_pass (j_decompress_ptr cinfo) -{ - my_idct_ptr idct = (my_idct_ptr) cinfo->idct; - int ci, i; - jpeg_component_info *compptr; - int method = 0; - inverse_DCT_method_ptr method_ptr = NULL; - JQUANT_TBL * qtbl; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Select the proper IDCT routine for this component's scaling */ - switch (compptr->DCT_scaled_size) { -#ifdef IDCT_SCALING_SUPPORTED - case 1: - method_ptr = jpeg_idct_1x1; - method = JDCT_ISLOW; /* jidctred uses islow-style table */ - break; - case 2: - method_ptr = jpeg_idct_2x2; - method = JDCT_ISLOW; /* jidctred uses islow-style table */ - break; - case 4: - method_ptr = jpeg_idct_4x4; - method = JDCT_ISLOW; /* jidctred uses islow-style table */ - break; -#endif - case DCTSIZE: - switch (cinfo->dct_method) { -#ifdef DCT_ISLOW_SUPPORTED - case JDCT_ISLOW: - method_ptr = jpeg_idct_islow; - method = JDCT_ISLOW; - break; -#endif -#ifdef DCT_IFAST_SUPPORTED - case JDCT_IFAST: - method_ptr = jpeg_idct_ifast; - method = JDCT_IFAST; - break; -#endif -#ifdef DCT_FLOAT_SUPPORTED - case JDCT_FLOAT: - method_ptr = jpeg_idct_float; - method = JDCT_FLOAT; - break; -#endif - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } - break; - default: - ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_scaled_size); - break; - } - idct->pub.inverse_DCT[ci] = method_ptr; - /* Create multiplier table from quant table. - * However, we can skip this if the component is uninteresting - * or if we already built the table. Also, if no quant table - * has yet been saved for the component, we leave the - * multiplier table all-zero; we'll be reading zeroes from the - * coefficient controller's buffer anyway. - */ - if (! compptr->component_needed || idct->cur_method[ci] == method) - continue; - qtbl = compptr->quant_table; - if (qtbl == NULL) /* happens if no data yet for component */ - continue; - idct->cur_method[ci] = method; - switch (method) { -#ifdef PROVIDE_ISLOW_TABLES - case JDCT_ISLOW: - { - /* For LL&M IDCT method, multipliers are equal to raw quantization - * coefficients, but are stored as ints to ensure access efficiency. - */ - ISLOW_MULT_TYPE * ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table; - for (i = 0; i < DCTSIZE2; i++) { - ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[i]; - } - } - break; -#endif -#ifdef DCT_IFAST_SUPPORTED - case JDCT_IFAST: - { - /* For AA&N IDCT method, multipliers are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - * For integer operation, the multiplier table is to be scaled by - * IFAST_SCALE_BITS. - */ - IFAST_MULT_TYPE * ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table; -#define CONST_BITS 14 - static const INT16 aanscales[DCTSIZE2] = { - /* precomputed values scaled up by 14 bits */ - 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, - 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, - 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, - 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, - 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, - 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, - 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446, - 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247 - }; - SHIFT_TEMPS - - for (i = 0; i < DCTSIZE2; i++) { - ifmtbl[i] = (IFAST_MULT_TYPE) - DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i], - (INT32) aanscales[i]), - CONST_BITS-IFAST_SCALE_BITS); - } - } - break; -#endif -#ifdef DCT_FLOAT_SUPPORTED - case JDCT_FLOAT: - { - /* For float AA&N IDCT method, multipliers are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - */ - FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table; - int row, col; - static const double aanscalefactor[DCTSIZE] = { - 1.0, 1.387039845, 1.306562965, 1.175875602, - 1.0, 0.785694958, 0.541196100, 0.275899379 - }; - - i = 0; - for (row = 0; row < DCTSIZE; row++) { - for (col = 0; col < DCTSIZE; col++) { - fmtbl[i] = (FLOAT_MULT_TYPE) - ((double) qtbl->quantval[i] * - aanscalefactor[row] * aanscalefactor[col]); - i++; - } - } - } - break; -#endif - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } - } -} - - -/* - * Initialize IDCT manager. - */ - -GLOBAL(void) -jinit_inverse_dct (j_decompress_ptr cinfo) -{ - my_idct_ptr idct; - int ci; - jpeg_component_info *compptr; - - idct = (my_idct_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_idct_controller)); - cinfo->idct = (struct jpeg_inverse_dct *) idct; - idct->pub.start_pass = start_pass; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Allocate and pre-zero a multiplier table for each component */ - compptr->dct_table = - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(multiplier_table)); - MEMZERO(compptr->dct_table, SIZEOF(multiplier_table)); - /* Mark multiplier table not yet set up for any method */ - idct->cur_method[ci] = -1; - } -} diff --git a/project/jni/jpeg/jdhuff.c b/project/jni/jpeg/jdhuff.c deleted file mode 100644 index b5ba39f73..000000000 --- a/project/jni/jpeg/jdhuff.c +++ /dev/null @@ -1,651 +0,0 @@ -/* - * jdhuff.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains Huffman entropy decoding routines. - * - * Much of the complexity here has to do with supporting input suspension. - * If the data source module demands suspension, we want to be able to back - * up to the start of the current MCU. To do this, we copy state variables - * into local working storage, and update them back to the permanent - * storage only upon successful completion of an MCU. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdhuff.h" /* Declarations shared with jdphuff.c */ - - -/* - * Expanded entropy decoder object for Huffman decoding. - * - * The savable_state subrecord contains fields that change within an MCU, - * but must not be updated permanently until we complete the MCU. - */ - -typedef struct { - int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ -} savable_state; - -/* This macro is to work around compilers with missing or broken - * structure assignment. You'll need to fix this code if you have - * such a compiler and you change MAX_COMPS_IN_SCAN. - */ - -#ifndef NO_STRUCT_ASSIGN -#define ASSIGN_STATE(dest,src) ((dest) = (src)) -#else -#if MAX_COMPS_IN_SCAN == 4 -#define ASSIGN_STATE(dest,src) \ - ((dest).last_dc_val[0] = (src).last_dc_val[0], \ - (dest).last_dc_val[1] = (src).last_dc_val[1], \ - (dest).last_dc_val[2] = (src).last_dc_val[2], \ - (dest).last_dc_val[3] = (src).last_dc_val[3]) -#endif -#endif - - -typedef struct { - struct jpeg_entropy_decoder pub; /* public fields */ - - /* These fields are loaded into local variables at start of each MCU. - * In case of suspension, we exit WITHOUT updating them. - */ - bitread_perm_state bitstate; /* Bit buffer at start of MCU */ - savable_state saved; /* Other state at start of MCU */ - - /* These fields are NOT loaded into local working state. */ - unsigned int restarts_to_go; /* MCUs left in this restart interval */ - - /* Pointers to derived tables (these workspaces have image lifespan) */ - d_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS]; - d_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS]; - - /* Precalculated info set up by start_pass for use in decode_mcu: */ - - /* Pointers to derived tables to be used for each block within an MCU */ - d_derived_tbl * dc_cur_tbls[D_MAX_BLOCKS_IN_MCU]; - d_derived_tbl * ac_cur_tbls[D_MAX_BLOCKS_IN_MCU]; - /* Whether we care about the DC and AC coefficient values for each block */ - boolean dc_needed[D_MAX_BLOCKS_IN_MCU]; - boolean ac_needed[D_MAX_BLOCKS_IN_MCU]; -} huff_entropy_decoder; - -typedef huff_entropy_decoder * huff_entropy_ptr; - - -/* - * Initialize for a Huffman-compressed scan. - */ - -METHODDEF(void) -start_pass_huff_decoder (j_decompress_ptr cinfo) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - int ci, blkn, dctbl, actbl; - jpeg_component_info * compptr; - - /* Check that the scan parameters Ss, Se, Ah/Al are OK for sequential JPEG. - * This ought to be an error condition, but we make it a warning because - * there are some baseline files out there with all zeroes in these bytes. - */ - if (cinfo->Ss != 0 || cinfo->Se != DCTSIZE2-1 || - cinfo->Ah != 0 || cinfo->Al != 0) - WARNMS(cinfo, JWRN_NOT_SEQUENTIAL); - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - dctbl = compptr->dc_tbl_no; - actbl = compptr->ac_tbl_no; - /* Compute derived values for Huffman tables */ - /* We may do this more than once for a table, but it's not expensive */ - jpeg_make_d_derived_tbl(cinfo, TRUE, dctbl, - & entropy->dc_derived_tbls[dctbl]); - jpeg_make_d_derived_tbl(cinfo, FALSE, actbl, - & entropy->ac_derived_tbls[actbl]); - /* Initialize DC predictions to 0 */ - entropy->saved.last_dc_val[ci] = 0; - } - - /* Precalculate decoding info for each block in an MCU of this scan */ - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - ci = cinfo->MCU_membership[blkn]; - compptr = cinfo->cur_comp_info[ci]; - /* Precalculate which table to use for each block */ - entropy->dc_cur_tbls[blkn] = entropy->dc_derived_tbls[compptr->dc_tbl_no]; - entropy->ac_cur_tbls[blkn] = entropy->ac_derived_tbls[compptr->ac_tbl_no]; - /* Decide whether we really care about the coefficient values */ - if (compptr->component_needed) { - entropy->dc_needed[blkn] = TRUE; - /* we don't need the ACs if producing a 1/8th-size image */ - entropy->ac_needed[blkn] = (compptr->DCT_scaled_size > 1); - } else { - entropy->dc_needed[blkn] = entropy->ac_needed[blkn] = FALSE; - } - } - - /* Initialize bitread state variables */ - entropy->bitstate.bits_left = 0; - entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */ - entropy->pub.insufficient_data = FALSE; - - /* Initialize restart counter */ - entropy->restarts_to_go = cinfo->restart_interval; -} - - -/* - * Compute the derived values for a Huffman table. - * This routine also performs some validation checks on the table. - * - * Note this is also used by jdphuff.c. - */ - -GLOBAL(void) -jpeg_make_d_derived_tbl (j_decompress_ptr cinfo, boolean isDC, int tblno, - d_derived_tbl ** pdtbl) -{ - JHUFF_TBL *htbl; - d_derived_tbl *dtbl; - int p, i, l, si, numsymbols; - int lookbits, ctr; - char huffsize[257]; - unsigned int huffcode[257]; - unsigned int code; - - /* Note that huffsize[] and huffcode[] are filled in code-length order, - * paralleling the order of the symbols themselves in htbl->huffval[]. - */ - - /* Find the input Huffman table */ - if (tblno < 0 || tblno >= NUM_HUFF_TBLS) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); - htbl = - isDC ? cinfo->dc_huff_tbl_ptrs[tblno] : cinfo->ac_huff_tbl_ptrs[tblno]; - if (htbl == NULL) - ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); - - /* Allocate a workspace if we haven't already done so. */ - if (*pdtbl == NULL) - *pdtbl = (d_derived_tbl *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(d_derived_tbl)); - dtbl = *pdtbl; - dtbl->pub = htbl; /* fill in back link */ - - /* Figure C.1: make table of Huffman code length for each symbol */ - - p = 0; - for (l = 1; l <= 16; l++) { - i = (int) htbl->bits[l]; - if (i < 0 || p + i > 256) /* protect against table overrun */ - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - while (i--) - huffsize[p++] = (char) l; - } - huffsize[p] = 0; - numsymbols = p; - - /* Figure C.2: generate the codes themselves */ - /* We also validate that the counts represent a legal Huffman code tree. */ - - code = 0; - si = huffsize[0]; - p = 0; - while (huffsize[p]) { - while (((int) huffsize[p]) == si) { - huffcode[p++] = code; - code++; - } - /* code is now 1 more than the last code used for codelength si; but - * it must still fit in si bits, since no code is allowed to be all ones. - */ - if (((INT32) code) >= (((INT32) 1) << si)) - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - code <<= 1; - si++; - } - - /* Figure F.15: generate decoding tables for bit-sequential decoding */ - - p = 0; - for (l = 1; l <= 16; l++) { - if (htbl->bits[l]) { - /* valoffset[l] = huffval[] index of 1st symbol of code length l, - * minus the minimum code of length l - */ - dtbl->valoffset[l] = (INT32) p - (INT32) huffcode[p]; - p += htbl->bits[l]; - dtbl->maxcode[l] = huffcode[p-1]; /* maximum code of length l */ - } else { - dtbl->maxcode[l] = -1; /* -1 if no codes of this length */ - } - } - dtbl->maxcode[17] = 0xFFFFFL; /* ensures jpeg_huff_decode terminates */ - - /* Compute lookahead tables to speed up decoding. - * First we set all the table entries to 0, indicating "too long"; - * then we iterate through the Huffman codes that are short enough and - * fill in all the entries that correspond to bit sequences starting - * with that code. - */ - - MEMZERO(dtbl->look_nbits, SIZEOF(dtbl->look_nbits)); - - p = 0; - for (l = 1; l <= HUFF_LOOKAHEAD; l++) { - for (i = 1; i <= (int) htbl->bits[l]; i++, p++) { - /* l = current code's length, p = its index in huffcode[] & huffval[]. */ - /* Generate left-justified code followed by all possible bit sequences */ - lookbits = huffcode[p] << (HUFF_LOOKAHEAD-l); - for (ctr = 1 << (HUFF_LOOKAHEAD-l); ctr > 0; ctr--) { - dtbl->look_nbits[lookbits] = l; - dtbl->look_sym[lookbits] = htbl->huffval[p]; - lookbits++; - } - } - } - - /* Validate symbols as being reasonable. - * For AC tables, we make no check, but accept all byte values 0..255. - * For DC tables, we require the symbols to be in range 0..15. - * (Tighter bounds could be applied depending on the data depth and mode, - * but this is sufficient to ensure safe decoding.) - */ - if (isDC) { - for (i = 0; i < numsymbols; i++) { - int sym = htbl->huffval[i]; - if (sym < 0 || sym > 15) - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - } - } -} - - -/* - * Out-of-line code for bit fetching (shared with jdphuff.c). - * See jdhuff.h for info about usage. - * Note: current values of get_buffer and bits_left are passed as parameters, - * but are returned in the corresponding fields of the state struct. - * - * On most machines MIN_GET_BITS should be 25 to allow the full 32-bit width - * of get_buffer to be used. (On machines with wider words, an even larger - * buffer could be used.) However, on some machines 32-bit shifts are - * quite slow and take time proportional to the number of places shifted. - * (This is true with most PC compilers, for instance.) In this case it may - * be a win to set MIN_GET_BITS to the minimum value of 15. This reduces the - * average shift distance at the cost of more calls to jpeg_fill_bit_buffer. - */ - -#ifdef SLOW_SHIFT_32 -#define MIN_GET_BITS 15 /* minimum allowable value */ -#else -#define MIN_GET_BITS (BIT_BUF_SIZE-7) -#endif - - -GLOBAL(boolean) -jpeg_fill_bit_buffer (bitread_working_state * state, - register bit_buf_type get_buffer, register int bits_left, - int nbits) -/* Load up the bit buffer to a depth of at least nbits */ -{ - /* Copy heavily used state fields into locals (hopefully registers) */ - register const JOCTET * next_input_byte = state->next_input_byte; - register size_t bytes_in_buffer = state->bytes_in_buffer; - j_decompress_ptr cinfo = state->cinfo; - - /* Attempt to load at least MIN_GET_BITS bits into get_buffer. */ - /* (It is assumed that no request will be for more than that many bits.) */ - /* We fail to do so only if we hit a marker or are forced to suspend. */ - - if (cinfo->unread_marker == 0) { /* cannot advance past a marker */ - while (bits_left < MIN_GET_BITS) { - register int c; - - /* Attempt to read a byte */ - if (bytes_in_buffer == 0) { - if (! (*cinfo->src->fill_input_buffer) (cinfo)) - return FALSE; - next_input_byte = cinfo->src->next_input_byte; - bytes_in_buffer = cinfo->src->bytes_in_buffer; - } - bytes_in_buffer--; - c = GETJOCTET(*next_input_byte++); - - /* If it's 0xFF, check and discard stuffed zero byte */ - if (c == 0xFF) { - /* Loop here to discard any padding FF's on terminating marker, - * so that we can save a valid unread_marker value. NOTE: we will - * accept multiple FF's followed by a 0 as meaning a single FF data - * byte. This data pattern is not valid according to the standard. - */ - do { - if (bytes_in_buffer == 0) { - if (! (*cinfo->src->fill_input_buffer) (cinfo)) - return FALSE; - next_input_byte = cinfo->src->next_input_byte; - bytes_in_buffer = cinfo->src->bytes_in_buffer; - } - bytes_in_buffer--; - c = GETJOCTET(*next_input_byte++); - } while (c == 0xFF); - - if (c == 0) { - /* Found FF/00, which represents an FF data byte */ - c = 0xFF; - } else { - /* Oops, it's actually a marker indicating end of compressed data. - * Save the marker code for later use. - * Fine point: it might appear that we should save the marker into - * bitread working state, not straight into permanent state. But - * once we have hit a marker, we cannot need to suspend within the - * current MCU, because we will read no more bytes from the data - * source. So it is OK to update permanent state right away. - */ - cinfo->unread_marker = c; - /* See if we need to insert some fake zero bits. */ - goto no_more_bytes; - } - } - - /* OK, load c into get_buffer */ - get_buffer = (get_buffer << 8) | c; - bits_left += 8; - } /* end while */ - } else { - no_more_bytes: - /* We get here if we've read the marker that terminates the compressed - * data segment. There should be enough bits in the buffer register - * to satisfy the request; if so, no problem. - */ - if (nbits > bits_left) { - /* Uh-oh. Report corrupted data to user and stuff zeroes into - * the data stream, so that we can produce some kind of image. - * We use a nonvolatile flag to ensure that only one warning message - * appears per data segment. - */ - if (! cinfo->entropy->insufficient_data) { - WARNMS(cinfo, JWRN_HIT_MARKER); - cinfo->entropy->insufficient_data = TRUE; - } - /* Fill the buffer with zero bits */ - get_buffer <<= MIN_GET_BITS - bits_left; - bits_left = MIN_GET_BITS; - } - } - - /* Unload the local registers */ - state->next_input_byte = next_input_byte; - state->bytes_in_buffer = bytes_in_buffer; - state->get_buffer = get_buffer; - state->bits_left = bits_left; - - return TRUE; -} - - -/* - * Out-of-line code for Huffman code decoding. - * See jdhuff.h for info about usage. - */ - -GLOBAL(int) -jpeg_huff_decode (bitread_working_state * state, - register bit_buf_type get_buffer, register int bits_left, - d_derived_tbl * htbl, int min_bits) -{ - register int l = min_bits; - register INT32 code; - - /* HUFF_DECODE has determined that the code is at least min_bits */ - /* bits long, so fetch that many bits in one swoop. */ - - CHECK_BIT_BUFFER(*state, l, return -1); - code = GET_BITS(l); - - /* Collect the rest of the Huffman code one bit at a time. */ - /* This is per Figure F.16 in the JPEG spec. */ - - while (code > htbl->maxcode[l]) { - code <<= 1; - CHECK_BIT_BUFFER(*state, 1, return -1); - code |= GET_BITS(1); - l++; - } - - /* Unload the local registers */ - state->get_buffer = get_buffer; - state->bits_left = bits_left; - - /* With garbage input we may reach the sentinel value l = 17. */ - - if (l > 16) { - WARNMS(state->cinfo, JWRN_HUFF_BAD_CODE); - return 0; /* fake a zero as the safest result */ - } - - return htbl->pub->huffval[ (int) (code + htbl->valoffset[l]) ]; -} - - -/* - * Figure F.12: extend sign bit. - * On some machines, a shift and add will be faster than a table lookup. - */ - -#ifdef AVOID_TABLES - -#define HUFF_EXTEND(x,s) ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x)) - -#else - -#define HUFF_EXTEND(x,s) ((x) < extend_test[s] ? (x) + extend_offset[s] : (x)) - -static const int extend_test[16] = /* entry n is 2**(n-1) */ - { 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080, - 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 }; - -static const int extend_offset[16] = /* entry n is (-1 << n) + 1 */ - { 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1, - ((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1, - ((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1, - ((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 }; - -#endif /* AVOID_TABLES */ - - -/* - * Check for a restart marker & resynchronize decoder. - * Returns FALSE if must suspend. - */ - -LOCAL(boolean) -process_restart (j_decompress_ptr cinfo) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - int ci; - - /* Throw away any unused bits remaining in bit buffer; */ - /* include any full bytes in next_marker's count of discarded bytes */ - cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8; - entropy->bitstate.bits_left = 0; - - /* Advance past the RSTn marker */ - if (! (*cinfo->marker->read_restart_marker) (cinfo)) - return FALSE; - - /* Re-initialize DC predictions to 0 */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) - entropy->saved.last_dc_val[ci] = 0; - - /* Reset restart counter */ - entropy->restarts_to_go = cinfo->restart_interval; - - /* Reset out-of-data flag, unless read_restart_marker left us smack up - * against a marker. In that case we will end up treating the next data - * segment as empty, and we can avoid producing bogus output pixels by - * leaving the flag set. - */ - if (cinfo->unread_marker == 0) - entropy->pub.insufficient_data = FALSE; - - return TRUE; -} - - -/* - * Decode and return one MCU's worth of Huffman-compressed coefficients. - * The coefficients are reordered from zigzag order into natural array order, - * but are not dequantized. - * - * The i'th block of the MCU is stored into the block pointed to by - * MCU_data[i]. WE ASSUME THIS AREA HAS BEEN ZEROED BY THE CALLER. - * (Wholesale zeroing is usually a little faster than retail...) - * - * Returns FALSE if data source requested suspension. In that case no - * changes have been made to permanent state. (Exception: some output - * coefficients may already have been assigned. This is harmless for - * this module, since we'll just re-assign them on the next call.) - */ - -METHODDEF(boolean) -decode_mcu (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) -{ - huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy; - int blkn; - BITREAD_STATE_VARS; - savable_state state; - - /* Process restart marker if needed; may have to suspend */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) - if (! process_restart(cinfo)) - return FALSE; - } - - /* If we've run out of data, just leave the MCU set to zeroes. - * This way, we return uniform gray for the remainder of the segment. - */ - if (! entropy->pub.insufficient_data) { - - /* Load up working state */ - BITREAD_LOAD_STATE(cinfo,entropy->bitstate); - ASSIGN_STATE(state, entropy->saved); - - /* Outer loop handles each block in the MCU */ - - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - JBLOCKROW block = MCU_data[blkn]; - d_derived_tbl * dctbl = entropy->dc_cur_tbls[blkn]; - d_derived_tbl * actbl = entropy->ac_cur_tbls[blkn]; - register int s, k, r; - - /* Decode a single block's worth of coefficients */ - - /* Section F.2.2.1: decode the DC coefficient difference */ - HUFF_DECODE(s, br_state, dctbl, return FALSE, label1); - if (s) { - CHECK_BIT_BUFFER(br_state, s, return FALSE); - r = GET_BITS(s); - s = HUFF_EXTEND(r, s); - } - - if (entropy->dc_needed[blkn]) { - /* Convert DC difference to actual value, update last_dc_val */ - int ci = cinfo->MCU_membership[blkn]; - s += state.last_dc_val[ci]; - state.last_dc_val[ci] = s; - /* Output the DC coefficient (assumes jpeg_natural_order[0] = 0) */ - (*block)[0] = (JCOEF) s; - } - - if (entropy->ac_needed[blkn]) { - - /* Section F.2.2.2: decode the AC coefficients */ - /* Since zeroes are skipped, output area must be cleared beforehand */ - for (k = 1; k < DCTSIZE2; k++) { - HUFF_DECODE(s, br_state, actbl, return FALSE, label2); - - r = s >> 4; - s &= 15; - - if (s) { - k += r; - CHECK_BIT_BUFFER(br_state, s, return FALSE); - r = GET_BITS(s); - s = HUFF_EXTEND(r, s); - /* Output coefficient in natural (dezigzagged) order. - * Note: the extra entries in jpeg_natural_order[] will save us - * if k >= DCTSIZE2, which could happen if the data is corrupted. - */ - (*block)[jpeg_natural_order[k]] = (JCOEF) s; - } else { - if (r != 15) - break; - k += 15; - } - } - - } else { - - /* Section F.2.2.2: decode the AC coefficients */ - /* In this path we just discard the values */ - for (k = 1; k < DCTSIZE2; k++) { - HUFF_DECODE(s, br_state, actbl, return FALSE, label3); - - r = s >> 4; - s &= 15; - - if (s) { - k += r; - CHECK_BIT_BUFFER(br_state, s, return FALSE); - DROP_BITS(s); - } else { - if (r != 15) - break; - k += 15; - } - } - - } - } - - /* Completed MCU, so update state */ - BITREAD_SAVE_STATE(cinfo,entropy->bitstate); - ASSIGN_STATE(entropy->saved, state); - } - - /* Account for restart interval (no-op if not using restarts) */ - entropy->restarts_to_go--; - - return TRUE; -} - - -/* - * Module initialization routine for Huffman entropy decoding. - */ - -GLOBAL(void) -jinit_huff_decoder (j_decompress_ptr cinfo) -{ - huff_entropy_ptr entropy; - int i; - - entropy = (huff_entropy_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(huff_entropy_decoder)); - cinfo->entropy = (struct jpeg_entropy_decoder *) entropy; - entropy->pub.start_pass = start_pass_huff_decoder; - entropy->pub.decode_mcu = decode_mcu; - - /* Mark tables unallocated */ - for (i = 0; i < NUM_HUFF_TBLS; i++) { - entropy->dc_derived_tbls[i] = entropy->ac_derived_tbls[i] = NULL; - } -} diff --git a/project/jni/jpeg/jdhuff.h b/project/jni/jpeg/jdhuff.h deleted file mode 100644 index ae19b6caf..000000000 --- a/project/jni/jpeg/jdhuff.h +++ /dev/null @@ -1,201 +0,0 @@ -/* - * jdhuff.h - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains declarations for Huffman entropy decoding routines - * that are shared between the sequential decoder (jdhuff.c) and the - * progressive decoder (jdphuff.c). No other modules need to see these. - */ - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jpeg_make_d_derived_tbl jMkDDerived -#define jpeg_fill_bit_buffer jFilBitBuf -#define jpeg_huff_decode jHufDecode -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - - -/* Derived data constructed for each Huffman table */ - -#define HUFF_LOOKAHEAD 8 /* # of bits of lookahead */ - -typedef struct { - /* Basic tables: (element [0] of each array is unused) */ - INT32 maxcode[18]; /* largest code of length k (-1 if none) */ - /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */ - INT32 valoffset[17]; /* huffval[] offset for codes of length k */ - /* valoffset[k] = huffval[] index of 1st symbol of code length k, less - * the smallest code of length k; so given a code of length k, the - * corresponding symbol is huffval[code + valoffset[k]] - */ - - /* Link to public Huffman table (needed only in jpeg_huff_decode) */ - JHUFF_TBL *pub; - - /* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of - * the input data stream. If the next Huffman code is no more - * than HUFF_LOOKAHEAD bits long, we can obtain its length and - * the corresponding symbol directly from these tables. - */ - int look_nbits[1< 32 bits on your machine, and shifting/masking longs is - * reasonably fast, making bit_buf_type be long and setting BIT_BUF_SIZE - * appropriately should be a win. Unfortunately we can't define the size - * with something like #define BIT_BUF_SIZE (sizeof(bit_buf_type)*8) - * because not all machines measure sizeof in 8-bit bytes. - */ - -typedef struct { /* Bitreading state saved across MCUs */ - bit_buf_type get_buffer; /* current bit-extraction buffer */ - int bits_left; /* # of unused bits in it */ -} bitread_perm_state; - -typedef struct { /* Bitreading working state within an MCU */ - /* Current data source location */ - /* We need a copy, rather than munging the original, in case of suspension */ - const JOCTET * next_input_byte; /* => next byte to read from source */ - size_t bytes_in_buffer; /* # of bytes remaining in source buffer */ - /* Bit input buffer --- note these values are kept in register variables, - * not in this struct, inside the inner loops. - */ - bit_buf_type get_buffer; /* current bit-extraction buffer */ - int bits_left; /* # of unused bits in it */ - /* Pointer needed by jpeg_fill_bit_buffer. */ - j_decompress_ptr cinfo; /* back link to decompress master record */ -} bitread_working_state; - -/* Macros to declare and load/save bitread local variables. */ -#define BITREAD_STATE_VARS \ - register bit_buf_type get_buffer; \ - register int bits_left; \ - bitread_working_state br_state - -#define BITREAD_LOAD_STATE(cinfop,permstate) \ - br_state.cinfo = cinfop; \ - br_state.next_input_byte = cinfop->src->next_input_byte; \ - br_state.bytes_in_buffer = cinfop->src->bytes_in_buffer; \ - get_buffer = permstate.get_buffer; \ - bits_left = permstate.bits_left; - -#define BITREAD_SAVE_STATE(cinfop,permstate) \ - cinfop->src->next_input_byte = br_state.next_input_byte; \ - cinfop->src->bytes_in_buffer = br_state.bytes_in_buffer; \ - permstate.get_buffer = get_buffer; \ - permstate.bits_left = bits_left - -/* - * These macros provide the in-line portion of bit fetching. - * Use CHECK_BIT_BUFFER to ensure there are N bits in get_buffer - * before using GET_BITS, PEEK_BITS, or DROP_BITS. - * The variables get_buffer and bits_left are assumed to be locals, - * but the state struct might not be (jpeg_huff_decode needs this). - * CHECK_BIT_BUFFER(state,n,action); - * Ensure there are N bits in get_buffer; if suspend, take action. - * val = GET_BITS(n); - * Fetch next N bits. - * val = PEEK_BITS(n); - * Fetch next N bits without removing them from the buffer. - * DROP_BITS(n); - * Discard next N bits. - * The value N should be a simple variable, not an expression, because it - * is evaluated multiple times. - */ - -#define CHECK_BIT_BUFFER(state,nbits,action) \ - { if (bits_left < (nbits)) { \ - if (! jpeg_fill_bit_buffer(&(state),get_buffer,bits_left,nbits)) \ - { action; } \ - get_buffer = (state).get_buffer; bits_left = (state).bits_left; } } - -#define GET_BITS(nbits) \ - (((int) (get_buffer >> (bits_left -= (nbits)))) & ((1<<(nbits))-1)) - -#define PEEK_BITS(nbits) \ - (((int) (get_buffer >> (bits_left - (nbits)))) & ((1<<(nbits))-1)) - -#define DROP_BITS(nbits) \ - (bits_left -= (nbits)) - -/* Load up the bit buffer to a depth of at least nbits */ -EXTERN(boolean) jpeg_fill_bit_buffer - JPP((bitread_working_state * state, register bit_buf_type get_buffer, - register int bits_left, int nbits)); - - -/* - * Code for extracting next Huffman-coded symbol from input bit stream. - * Again, this is time-critical and we make the main paths be macros. - * - * We use a lookahead table to process codes of up to HUFF_LOOKAHEAD bits - * without looping. Usually, more than 95% of the Huffman codes will be 8 - * or fewer bits long. The few overlength codes are handled with a loop, - * which need not be inline code. - * - * Notes about the HUFF_DECODE macro: - * 1. Near the end of the data segment, we may fail to get enough bits - * for a lookahead. In that case, we do it the hard way. - * 2. If the lookahead table contains no entry, the next code must be - * more than HUFF_LOOKAHEAD bits long. - * 3. jpeg_huff_decode returns -1 if forced to suspend. - */ - -#define HUFF_DECODE(result,state,htbl,failaction,slowlabel) \ -{ register int nb, look; \ - if (bits_left < HUFF_LOOKAHEAD) { \ - if (! jpeg_fill_bit_buffer(&state,get_buffer,bits_left, 0)) {failaction;} \ - get_buffer = state.get_buffer; bits_left = state.bits_left; \ - if (bits_left < HUFF_LOOKAHEAD) { \ - nb = 1; goto slowlabel; \ - } \ - } \ - look = PEEK_BITS(HUFF_LOOKAHEAD); \ - if ((nb = htbl->look_nbits[look]) != 0) { \ - DROP_BITS(nb); \ - result = htbl->look_sym[look]; \ - } else { \ - nb = HUFF_LOOKAHEAD+1; \ -slowlabel: \ - if ((result=jpeg_huff_decode(&state,get_buffer,bits_left,htbl,nb)) < 0) \ - { failaction; } \ - get_buffer = state.get_buffer; bits_left = state.bits_left; \ - } \ -} - -/* Out-of-line case for Huffman code fetching */ -EXTERN(int) jpeg_huff_decode - JPP((bitread_working_state * state, register bit_buf_type get_buffer, - register int bits_left, d_derived_tbl * htbl, int min_bits)); diff --git a/project/jni/jpeg/jdinput.c b/project/jni/jpeg/jdinput.c deleted file mode 100644 index 0c2ac8f12..000000000 --- a/project/jni/jpeg/jdinput.c +++ /dev/null @@ -1,381 +0,0 @@ -/* - * jdinput.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains input control logic for the JPEG decompressor. - * These routines are concerned with controlling the decompressor's input - * processing (marker reading and coefficient decoding). The actual input - * reading is done in jdmarker.c, jdhuff.c, and jdphuff.c. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Private state */ - -typedef struct { - struct jpeg_input_controller pub; /* public fields */ - - boolean inheaders; /* TRUE until first SOS is reached */ -} my_input_controller; - -typedef my_input_controller * my_inputctl_ptr; - - -/* Forward declarations */ -METHODDEF(int) consume_markers JPP((j_decompress_ptr cinfo)); - - -/* - * Routines to calculate various quantities related to the size of the image. - */ - -LOCAL(void) -initial_setup (j_decompress_ptr cinfo) -/* Called once, when first SOS marker is reached */ -{ - int ci; - jpeg_component_info *compptr; - - /* Make sure image isn't bigger than I can handle */ - if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION || - (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION) - ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION); - - /* For now, precision must match compiled-in value... */ - if (cinfo->data_precision != BITS_IN_JSAMPLE) - ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision); - - /* Check that number of components won't exceed internal array sizes */ - if (cinfo->num_components > MAX_COMPONENTS) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components, - MAX_COMPONENTS); - - /* Compute maximum sampling factors; check factor validity */ - cinfo->max_h_samp_factor = 1; - cinfo->max_v_samp_factor = 1; - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR || - compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR) - ERREXIT(cinfo, JERR_BAD_SAMPLING); - cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor, - compptr->h_samp_factor); - cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor, - compptr->v_samp_factor); - } - - /* We initialize DCT_scaled_size and min_DCT_scaled_size to DCTSIZE. - * In the full decompressor, this will be overridden by jdmaster.c; - * but in the transcoder, jdmaster.c is not used, so we must do it here. - */ - cinfo->min_DCT_scaled_size = DCTSIZE; - - /* Compute dimensions of components */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - compptr->DCT_scaled_size = DCTSIZE; - /* Size in DCT blocks */ - compptr->width_in_blocks = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor, - (long) (cinfo->max_h_samp_factor * DCTSIZE)); - compptr->height_in_blocks = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor, - (long) (cinfo->max_v_samp_factor * DCTSIZE)); - /* downsampled_width and downsampled_height will also be overridden by - * jdmaster.c if we are doing full decompression. The transcoder library - * doesn't use these values, but the calling application might. - */ - /* Size in samples */ - compptr->downsampled_width = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor, - (long) cinfo->max_h_samp_factor); - compptr->downsampled_height = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor, - (long) cinfo->max_v_samp_factor); - /* Mark component needed, until color conversion says otherwise */ - compptr->component_needed = TRUE; - /* Mark no quantization table yet saved for component */ - compptr->quant_table = NULL; - } - - /* Compute number of fully interleaved MCU rows. */ - cinfo->total_iMCU_rows = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, - (long) (cinfo->max_v_samp_factor*DCTSIZE)); - - /* Decide whether file contains multiple scans */ - if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode) - cinfo->inputctl->has_multiple_scans = TRUE; - else - cinfo->inputctl->has_multiple_scans = FALSE; -} - - -LOCAL(void) -per_scan_setup (j_decompress_ptr cinfo) -/* Do computations that are needed before processing a JPEG scan */ -/* cinfo->comps_in_scan and cinfo->cur_comp_info[] were set from SOS marker */ -{ - int ci, mcublks, tmp; - jpeg_component_info *compptr; - - if (cinfo->comps_in_scan == 1) { - - /* Noninterleaved (single-component) scan */ - compptr = cinfo->cur_comp_info[0]; - - /* Overall image size in MCUs */ - cinfo->MCUs_per_row = compptr->width_in_blocks; - cinfo->MCU_rows_in_scan = compptr->height_in_blocks; - - /* For noninterleaved scan, always one block per MCU */ - compptr->MCU_width = 1; - compptr->MCU_height = 1; - compptr->MCU_blocks = 1; - compptr->MCU_sample_width = compptr->DCT_scaled_size; - compptr->last_col_width = 1; - /* For noninterleaved scans, it is convenient to define last_row_height - * as the number of block rows present in the last iMCU row. - */ - tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor); - if (tmp == 0) tmp = compptr->v_samp_factor; - compptr->last_row_height = tmp; - - /* Prepare array describing MCU composition */ - cinfo->blocks_in_MCU = 1; - cinfo->MCU_membership[0] = 0; - - } else { - - /* Interleaved (multi-component) scan */ - if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN) - ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan, - MAX_COMPS_IN_SCAN); - - /* Overall image size in MCUs */ - cinfo->MCUs_per_row = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width, - (long) (cinfo->max_h_samp_factor*DCTSIZE)); - cinfo->MCU_rows_in_scan = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, - (long) (cinfo->max_v_samp_factor*DCTSIZE)); - - cinfo->blocks_in_MCU = 0; - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - /* Sampling factors give # of blocks of component in each MCU */ - compptr->MCU_width = compptr->h_samp_factor; - compptr->MCU_height = compptr->v_samp_factor; - compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height; - compptr->MCU_sample_width = compptr->MCU_width * compptr->DCT_scaled_size; - /* Figure number of non-dummy blocks in last MCU column & row */ - tmp = (int) (compptr->width_in_blocks % compptr->MCU_width); - if (tmp == 0) tmp = compptr->MCU_width; - compptr->last_col_width = tmp; - tmp = (int) (compptr->height_in_blocks % compptr->MCU_height); - if (tmp == 0) tmp = compptr->MCU_height; - compptr->last_row_height = tmp; - /* Prepare array describing MCU composition */ - mcublks = compptr->MCU_blocks; - if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU) - ERREXIT(cinfo, JERR_BAD_MCU_SIZE); - while (mcublks-- > 0) { - cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci; - } - } - - } -} - - -/* - * Save away a copy of the Q-table referenced by each component present - * in the current scan, unless already saved during a prior scan. - * - * In a multiple-scan JPEG file, the encoder could assign different components - * the same Q-table slot number, but change table definitions between scans - * so that each component uses a different Q-table. (The IJG encoder is not - * currently capable of doing this, but other encoders might.) Since we want - * to be able to dequantize all the components at the end of the file, this - * means that we have to save away the table actually used for each component. - * We do this by copying the table at the start of the first scan containing - * the component. - * The JPEG spec prohibits the encoder from changing the contents of a Q-table - * slot between scans of a component using that slot. If the encoder does so - * anyway, this decoder will simply use the Q-table values that were current - * at the start of the first scan for the component. - * - * The decompressor output side looks only at the saved quant tables, - * not at the current Q-table slots. - */ - -LOCAL(void) -latch_quant_tables (j_decompress_ptr cinfo) -{ - int ci, qtblno; - jpeg_component_info *compptr; - JQUANT_TBL * qtbl; - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - /* No work if we already saved Q-table for this component */ - if (compptr->quant_table != NULL) - continue; - /* Make sure specified quantization table is present */ - qtblno = compptr->quant_tbl_no; - if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS || - cinfo->quant_tbl_ptrs[qtblno] == NULL) - ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno); - /* OK, save away the quantization table */ - qtbl = (JQUANT_TBL *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(JQUANT_TBL)); - MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL)); - compptr->quant_table = qtbl; - } -} - - -/* - * Initialize the input modules to read a scan of compressed data. - * The first call to this is done by jdmaster.c after initializing - * the entire decompressor (during jpeg_start_decompress). - * Subsequent calls come from consume_markers, below. - */ - -METHODDEF(void) -start_input_pass (j_decompress_ptr cinfo) -{ - per_scan_setup(cinfo); - latch_quant_tables(cinfo); - (*cinfo->entropy->start_pass) (cinfo); - (*cinfo->coef->start_input_pass) (cinfo); - cinfo->inputctl->consume_input = cinfo->coef->consume_data; -} - - -/* - * Finish up after inputting a compressed-data scan. - * This is called by the coefficient controller after it's read all - * the expected data of the scan. - */ - -METHODDEF(void) -finish_input_pass (j_decompress_ptr cinfo) -{ - cinfo->inputctl->consume_input = consume_markers; -} - - -/* - * Read JPEG markers before, between, or after compressed-data scans. - * Change state as necessary when a new scan is reached. - * Return value is JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. - * - * The consume_input method pointer points either here or to the - * coefficient controller's consume_data routine, depending on whether - * we are reading a compressed data segment or inter-segment markers. - */ - -METHODDEF(int) -consume_markers (j_decompress_ptr cinfo) -{ - my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl; - int val; - - if (inputctl->pub.eoi_reached) /* After hitting EOI, read no further */ - return JPEG_REACHED_EOI; - - val = (*cinfo->marker->read_markers) (cinfo); - - switch (val) { - case JPEG_REACHED_SOS: /* Found SOS */ - if (inputctl->inheaders) { /* 1st SOS */ - initial_setup(cinfo); - inputctl->inheaders = FALSE; - /* Note: start_input_pass must be called by jdmaster.c - * before any more input can be consumed. jdapimin.c is - * responsible for enforcing this sequencing. - */ - } else { /* 2nd or later SOS marker */ - if (! inputctl->pub.has_multiple_scans) - ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */ - start_input_pass(cinfo); - } - break; - case JPEG_REACHED_EOI: /* Found EOI */ - inputctl->pub.eoi_reached = TRUE; - if (inputctl->inheaders) { /* Tables-only datastream, apparently */ - if (cinfo->marker->saw_SOF) - ERREXIT(cinfo, JERR_SOF_NO_SOS); - } else { - /* Prevent infinite loop in coef ctlr's decompress_data routine - * if user set output_scan_number larger than number of scans. - */ - if (cinfo->output_scan_number > cinfo->input_scan_number) - cinfo->output_scan_number = cinfo->input_scan_number; - } - break; - case JPEG_SUSPENDED: - break; - } - - return val; -} - - -/* - * Reset state to begin a fresh datastream. - */ - -METHODDEF(void) -reset_input_controller (j_decompress_ptr cinfo) -{ - my_inputctl_ptr inputctl = (my_inputctl_ptr) cinfo->inputctl; - - inputctl->pub.consume_input = consume_markers; - inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */ - inputctl->pub.eoi_reached = FALSE; - inputctl->inheaders = TRUE; - /* Reset other modules */ - (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); - (*cinfo->marker->reset_marker_reader) (cinfo); - /* Reset progression state -- would be cleaner if entropy decoder did this */ - cinfo->coef_bits = NULL; -} - - -/* - * Initialize the input controller module. - * This is called only once, when the decompression object is created. - */ - -GLOBAL(void) -jinit_input_controller (j_decompress_ptr cinfo) -{ - my_inputctl_ptr inputctl; - - /* Create subobject in permanent pool */ - inputctl = (my_inputctl_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - SIZEOF(my_input_controller)); - cinfo->inputctl = (struct jpeg_input_controller *) inputctl; - /* Initialize method pointers */ - inputctl->pub.consume_input = consume_markers; - inputctl->pub.reset_input_controller = reset_input_controller; - inputctl->pub.start_input_pass = start_input_pass; - inputctl->pub.finish_input_pass = finish_input_pass; - /* Initialize state: can't use reset_input_controller since we don't - * want to try to reset other modules yet. - */ - inputctl->pub.has_multiple_scans = FALSE; /* "unknown" would be better */ - inputctl->pub.eoi_reached = FALSE; - inputctl->inheaders = TRUE; -} diff --git a/project/jni/jpeg/jdmainct.c b/project/jni/jpeg/jdmainct.c deleted file mode 100644 index 13c956f5d..000000000 --- a/project/jni/jpeg/jdmainct.c +++ /dev/null @@ -1,512 +0,0 @@ -/* - * jdmainct.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the main buffer controller for decompression. - * The main buffer lies between the JPEG decompressor proper and the - * post-processor; it holds downsampled data in the JPEG colorspace. - * - * Note that this code is bypassed in raw-data mode, since the application - * supplies the equivalent of the main buffer in that case. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * In the current system design, the main buffer need never be a full-image - * buffer; any full-height buffers will be found inside the coefficient or - * postprocessing controllers. Nonetheless, the main controller is not - * trivial. Its responsibility is to provide context rows for upsampling/ - * rescaling, and doing this in an efficient fashion is a bit tricky. - * - * Postprocessor input data is counted in "row groups". A row group - * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size) - * sample rows of each component. (We require DCT_scaled_size values to be - * chosen such that these numbers are integers. In practice DCT_scaled_size - * values will likely be powers of two, so we actually have the stronger - * condition that DCT_scaled_size / min_DCT_scaled_size is an integer.) - * Upsampling will typically produce max_v_samp_factor pixel rows from each - * row group (times any additional scale factor that the upsampler is - * applying). - * - * The coefficient controller will deliver data to us one iMCU row at a time; - * each iMCU row contains v_samp_factor * DCT_scaled_size sample rows, or - * exactly min_DCT_scaled_size row groups. (This amount of data corresponds - * to one row of MCUs when the image is fully interleaved.) Note that the - * number of sample rows varies across components, but the number of row - * groups does not. Some garbage sample rows may be included in the last iMCU - * row at the bottom of the image. - * - * Depending on the vertical scaling algorithm used, the upsampler may need - * access to the sample row(s) above and below its current input row group. - * The upsampler is required to set need_context_rows TRUE at global selection - * time if so. When need_context_rows is FALSE, this controller can simply - * obtain one iMCU row at a time from the coefficient controller and dole it - * out as row groups to the postprocessor. - * - * When need_context_rows is TRUE, this controller guarantees that the buffer - * passed to postprocessing contains at least one row group's worth of samples - * above and below the row group(s) being processed. Note that the context - * rows "above" the first passed row group appear at negative row offsets in - * the passed buffer. At the top and bottom of the image, the required - * context rows are manufactured by duplicating the first or last real sample - * row; this avoids having special cases in the upsampling inner loops. - * - * The amount of context is fixed at one row group just because that's a - * convenient number for this controller to work with. The existing - * upsamplers really only need one sample row of context. An upsampler - * supporting arbitrary output rescaling might wish for more than one row - * group of context when shrinking the image; tough, we don't handle that. - * (This is justified by the assumption that downsizing will be handled mostly - * by adjusting the DCT_scaled_size values, so that the actual scale factor at - * the upsample step needn't be much less than one.) - * - * To provide the desired context, we have to retain the last two row groups - * of one iMCU row while reading in the next iMCU row. (The last row group - * can't be processed until we have another row group for its below-context, - * and so we have to save the next-to-last group too for its above-context.) - * We could do this most simply by copying data around in our buffer, but - * that'd be very slow. We can avoid copying any data by creating a rather - * strange pointer structure. Here's how it works. We allocate a workspace - * consisting of M+2 row groups (where M = min_DCT_scaled_size is the number - * of row groups per iMCU row). We create two sets of redundant pointers to - * the workspace. Labeling the physical row groups 0 to M+1, the synthesized - * pointer lists look like this: - * M+1 M-1 - * master pointer --> 0 master pointer --> 0 - * 1 1 - * ... ... - * M-3 M-3 - * M-2 M - * M-1 M+1 - * M M-2 - * M+1 M-1 - * 0 0 - * We read alternate iMCU rows using each master pointer; thus the last two - * row groups of the previous iMCU row remain un-overwritten in the workspace. - * The pointer lists are set up so that the required context rows appear to - * be adjacent to the proper places when we pass the pointer lists to the - * upsampler. - * - * The above pictures describe the normal state of the pointer lists. - * At top and bottom of the image, we diddle the pointer lists to duplicate - * the first or last sample row as necessary (this is cheaper than copying - * sample rows around). - * - * This scheme breaks down if M < 2, ie, min_DCT_scaled_size is 1. In that - * situation each iMCU row provides only one row group so the buffering logic - * must be different (eg, we must read two iMCU rows before we can emit the - * first row group). For now, we simply do not support providing context - * rows when min_DCT_scaled_size is 1. That combination seems unlikely to - * be worth providing --- if someone wants a 1/8th-size preview, they probably - * want it quick and dirty, so a context-free upsampler is sufficient. - */ - - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_d_main_controller pub; /* public fields */ - - /* Pointer to allocated workspace (M or M+2 row groups). */ - JSAMPARRAY buffer[MAX_COMPONENTS]; - - boolean buffer_full; /* Have we gotten an iMCU row from decoder? */ - JDIMENSION rowgroup_ctr; /* counts row groups output to postprocessor */ - - /* Remaining fields are only used in the context case. */ - - /* These are the master pointers to the funny-order pointer lists. */ - JSAMPIMAGE xbuffer[2]; /* pointers to weird pointer lists */ - - int whichptr; /* indicates which pointer set is now in use */ - int context_state; /* process_data state machine status */ - JDIMENSION rowgroups_avail; /* row groups available to postprocessor */ - JDIMENSION iMCU_row_ctr; /* counts iMCU rows to detect image top/bot */ -} my_main_controller; - -typedef my_main_controller * my_main_ptr; - -/* context_state values: */ -#define CTX_PREPARE_FOR_IMCU 0 /* need to prepare for MCU row */ -#define CTX_PROCESS_IMCU 1 /* feeding iMCU to postprocessor */ -#define CTX_POSTPONED_ROW 2 /* feeding postponed row group */ - - -/* Forward declarations */ -METHODDEF(void) process_data_simple_main - JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf, - JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); -METHODDEF(void) process_data_context_main - JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf, - JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); -#ifdef QUANT_2PASS_SUPPORTED -METHODDEF(void) process_data_crank_post - JPP((j_decompress_ptr cinfo, JSAMPARRAY output_buf, - JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)); -#endif - - -LOCAL(void) -alloc_funny_pointers (j_decompress_ptr cinfo) -/* Allocate space for the funny pointer lists. - * This is done only once, not once per pass. - */ -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - int ci, rgroup; - int M = cinfo->min_DCT_scaled_size; - jpeg_component_info *compptr; - JSAMPARRAY xbuf; - - /* Get top-level space for component array pointers. - * We alloc both arrays with one call to save a few cycles. - */ - main->xbuffer[0] = (JSAMPIMAGE) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->num_components * 2 * SIZEOF(JSAMPARRAY)); - main->xbuffer[1] = main->xbuffer[0] + cinfo->num_components; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / - cinfo->min_DCT_scaled_size; /* height of a row group of component */ - /* Get space for pointer lists --- M+4 row groups in each list. - * We alloc both pointer lists with one call to save a few cycles. - */ - xbuf = (JSAMPARRAY) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - 2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW)); - xbuf += rgroup; /* want one row group at negative offsets */ - main->xbuffer[0][ci] = xbuf; - xbuf += rgroup * (M + 4); - main->xbuffer[1][ci] = xbuf; - } -} - - -LOCAL(void) -make_funny_pointers (j_decompress_ptr cinfo) -/* Create the funny pointer lists discussed in the comments above. - * The actual workspace is already allocated (in main->buffer), - * and the space for the pointer lists is allocated too. - * This routine just fills in the curiously ordered lists. - * This will be repeated at the beginning of each pass. - */ -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - int ci, i, rgroup; - int M = cinfo->min_DCT_scaled_size; - jpeg_component_info *compptr; - JSAMPARRAY buf, xbuf0, xbuf1; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / - cinfo->min_DCT_scaled_size; /* height of a row group of component */ - xbuf0 = main->xbuffer[0][ci]; - xbuf1 = main->xbuffer[1][ci]; - /* First copy the workspace pointers as-is */ - buf = main->buffer[ci]; - for (i = 0; i < rgroup * (M + 2); i++) { - xbuf0[i] = xbuf1[i] = buf[i]; - } - /* In the second list, put the last four row groups in swapped order */ - for (i = 0; i < rgroup * 2; i++) { - xbuf1[rgroup*(M-2) + i] = buf[rgroup*M + i]; - xbuf1[rgroup*M + i] = buf[rgroup*(M-2) + i]; - } - /* The wraparound pointers at top and bottom will be filled later - * (see set_wraparound_pointers, below). Initially we want the "above" - * pointers to duplicate the first actual data line. This only needs - * to happen in xbuffer[0]. - */ - for (i = 0; i < rgroup; i++) { - xbuf0[i - rgroup] = xbuf0[0]; - } - } -} - - -LOCAL(void) -set_wraparound_pointers (j_decompress_ptr cinfo) -/* Set up the "wraparound" pointers at top and bottom of the pointer lists. - * This changes the pointer list state from top-of-image to the normal state. - */ -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - int ci, i, rgroup; - int M = cinfo->min_DCT_scaled_size; - jpeg_component_info *compptr; - JSAMPARRAY xbuf0, xbuf1; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / - cinfo->min_DCT_scaled_size; /* height of a row group of component */ - xbuf0 = main->xbuffer[0][ci]; - xbuf1 = main->xbuffer[1][ci]; - for (i = 0; i < rgroup; i++) { - xbuf0[i - rgroup] = xbuf0[rgroup*(M+1) + i]; - xbuf1[i - rgroup] = xbuf1[rgroup*(M+1) + i]; - xbuf0[rgroup*(M+2) + i] = xbuf0[i]; - xbuf1[rgroup*(M+2) + i] = xbuf1[i]; - } - } -} - - -LOCAL(void) -set_bottom_pointers (j_decompress_ptr cinfo) -/* Change the pointer lists to duplicate the last sample row at the bottom - * of the image. whichptr indicates which xbuffer holds the final iMCU row. - * Also sets rowgroups_avail to indicate number of nondummy row groups in row. - */ -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - int ci, i, rgroup, iMCUheight, rows_left; - jpeg_component_info *compptr; - JSAMPARRAY xbuf; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Count sample rows in one iMCU row and in one row group */ - iMCUheight = compptr->v_samp_factor * compptr->DCT_scaled_size; - rgroup = iMCUheight / cinfo->min_DCT_scaled_size; - /* Count nondummy sample rows remaining for this component */ - rows_left = (int) (compptr->downsampled_height % (JDIMENSION) iMCUheight); - if (rows_left == 0) rows_left = iMCUheight; - /* Count nondummy row groups. Should get same answer for each component, - * so we need only do it once. - */ - if (ci == 0) { - main->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1); - } - /* Duplicate the last real sample row rgroup*2 times; this pads out the - * last partial rowgroup and ensures at least one full rowgroup of context. - */ - xbuf = main->xbuffer[main->whichptr][ci]; - for (i = 0; i < rgroup * 2; i++) { - xbuf[rows_left + i] = xbuf[rows_left-1]; - } - } -} - - -/* - * Initialize for a processing pass. - */ - -METHODDEF(void) -start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - - switch (pass_mode) { - case JBUF_PASS_THRU: - if (cinfo->upsample->need_context_rows) { - main->pub.process_data = process_data_context_main; - make_funny_pointers(cinfo); /* Create the xbuffer[] lists */ - main->whichptr = 0; /* Read first iMCU row into xbuffer[0] */ - main->context_state = CTX_PREPARE_FOR_IMCU; - main->iMCU_row_ctr = 0; - } else { - /* Simple case with no context needed */ - main->pub.process_data = process_data_simple_main; - } - main->buffer_full = FALSE; /* Mark buffer empty */ - main->rowgroup_ctr = 0; - break; -#ifdef QUANT_2PASS_SUPPORTED - case JBUF_CRANK_DEST: - /* For last pass of 2-pass quantization, just crank the postprocessor */ - main->pub.process_data = process_data_crank_post; - break; -#endif - default: - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - break; - } -} - - -/* - * Process some data. - * This handles the simple case where no context is required. - */ - -METHODDEF(void) -process_data_simple_main (j_decompress_ptr cinfo, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - JDIMENSION rowgroups_avail; - - /* Read input data if we haven't filled the main buffer yet */ - if (! main->buffer_full) { - if (! (*cinfo->coef->decompress_data) (cinfo, main->buffer)) - return; /* suspension forced, can do nothing more */ - main->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ - } - - /* There are always min_DCT_scaled_size row groups in an iMCU row. */ - rowgroups_avail = (JDIMENSION) cinfo->min_DCT_scaled_size; - /* Note: at the bottom of the image, we may pass extra garbage row groups - * to the postprocessor. The postprocessor has to check for bottom - * of image anyway (at row resolution), so no point in us doing it too. - */ - - /* Feed the postprocessor */ - (*cinfo->post->post_process_data) (cinfo, main->buffer, - &main->rowgroup_ctr, rowgroups_avail, - output_buf, out_row_ctr, out_rows_avail); - - /* Has postprocessor consumed all the data yet? If so, mark buffer empty */ - if (main->rowgroup_ctr >= rowgroups_avail) { - main->buffer_full = FALSE; - main->rowgroup_ctr = 0; - } -} - - -/* - * Process some data. - * This handles the case where context rows must be provided. - */ - -METHODDEF(void) -process_data_context_main (j_decompress_ptr cinfo, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - my_main_ptr main = (my_main_ptr) cinfo->main; - - /* Read input data if we haven't filled the main buffer yet */ - if (! main->buffer_full) { - if (! (*cinfo->coef->decompress_data) (cinfo, - main->xbuffer[main->whichptr])) - return; /* suspension forced, can do nothing more */ - main->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ - main->iMCU_row_ctr++; /* count rows received */ - } - - /* Postprocessor typically will not swallow all the input data it is handed - * in one call (due to filling the output buffer first). Must be prepared - * to exit and restart. This switch lets us keep track of how far we got. - * Note that each case falls through to the next on successful completion. - */ - switch (main->context_state) { - case CTX_POSTPONED_ROW: - /* Call postprocessor using previously set pointers for postponed row */ - (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr], - &main->rowgroup_ctr, main->rowgroups_avail, - output_buf, out_row_ctr, out_rows_avail); - if (main->rowgroup_ctr < main->rowgroups_avail) - return; /* Need to suspend */ - main->context_state = CTX_PREPARE_FOR_IMCU; - if (*out_row_ctr >= out_rows_avail) - return; /* Postprocessor exactly filled output buf */ - /*FALLTHROUGH*/ - case CTX_PREPARE_FOR_IMCU: - /* Prepare to process first M-1 row groups of this iMCU row */ - main->rowgroup_ctr = 0; - main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size - 1); - /* Check for bottom of image: if so, tweak pointers to "duplicate" - * the last sample row, and adjust rowgroups_avail to ignore padding rows. - */ - if (main->iMCU_row_ctr == cinfo->total_iMCU_rows) - set_bottom_pointers(cinfo); - main->context_state = CTX_PROCESS_IMCU; - /*FALLTHROUGH*/ - case CTX_PROCESS_IMCU: - /* Call postprocessor using previously set pointers */ - (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr], - &main->rowgroup_ctr, main->rowgroups_avail, - output_buf, out_row_ctr, out_rows_avail); - if (main->rowgroup_ctr < main->rowgroups_avail) - return; /* Need to suspend */ - /* After the first iMCU, change wraparound pointers to normal state */ - if (main->iMCU_row_ctr == 1) - set_wraparound_pointers(cinfo); - /* Prepare to load new iMCU row using other xbuffer list */ - main->whichptr ^= 1; /* 0=>1 or 1=>0 */ - main->buffer_full = FALSE; - /* Still need to process last row group of this iMCU row, */ - /* which is saved at index M+1 of the other xbuffer */ - main->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_scaled_size + 1); - main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size + 2); - main->context_state = CTX_POSTPONED_ROW; - } -} - - -/* - * Process some data. - * Final pass of two-pass quantization: just call the postprocessor. - * Source data will be the postprocessor controller's internal buffer. - */ - -#ifdef QUANT_2PASS_SUPPORTED - -METHODDEF(void) -process_data_crank_post (j_decompress_ptr cinfo, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - (*cinfo->post->post_process_data) (cinfo, (JSAMPIMAGE) NULL, - (JDIMENSION *) NULL, (JDIMENSION) 0, - output_buf, out_row_ctr, out_rows_avail); -} - -#endif /* QUANT_2PASS_SUPPORTED */ - - -/* - * Initialize main buffer controller. - */ - -GLOBAL(void) -jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer) -{ - my_main_ptr main; - int ci, rgroup, ngroups; - jpeg_component_info *compptr; - - main = (my_main_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_main_controller)); - cinfo->main = (struct jpeg_d_main_controller *) main; - main->pub.start_pass = start_pass_main; - - if (need_full_buffer) /* shouldn't happen */ - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - - /* Allocate the workspace. - * ngroups is the number of row groups we need. - */ - if (cinfo->upsample->need_context_rows) { - if (cinfo->min_DCT_scaled_size < 2) /* unsupported, see comments above */ - ERREXIT(cinfo, JERR_NOTIMPL); - alloc_funny_pointers(cinfo); /* Alloc space for xbuffer[] lists */ - ngroups = cinfo->min_DCT_scaled_size + 2; - } else { - ngroups = cinfo->min_DCT_scaled_size; - } - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / - cinfo->min_DCT_scaled_size; /* height of a row group of component */ - main->buffer[ci] = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - compptr->width_in_blocks * compptr->DCT_scaled_size, - (JDIMENSION) (rgroup * ngroups)); - } -} diff --git a/project/jni/jpeg/jdmarker.c b/project/jni/jpeg/jdmarker.c deleted file mode 100644 index f4cca8cc8..000000000 --- a/project/jni/jpeg/jdmarker.c +++ /dev/null @@ -1,1360 +0,0 @@ -/* - * jdmarker.c - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to decode JPEG datastream markers. - * Most of the complexity arises from our desire to support input - * suspension: if not all of the data for a marker is available, - * we must exit back to the application. On resumption, we reprocess - * the marker. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -typedef enum { /* JPEG marker codes */ - M_SOF0 = 0xc0, - M_SOF1 = 0xc1, - M_SOF2 = 0xc2, - M_SOF3 = 0xc3, - - M_SOF5 = 0xc5, - M_SOF6 = 0xc6, - M_SOF7 = 0xc7, - - M_JPG = 0xc8, - M_SOF9 = 0xc9, - M_SOF10 = 0xca, - M_SOF11 = 0xcb, - - M_SOF13 = 0xcd, - M_SOF14 = 0xce, - M_SOF15 = 0xcf, - - M_DHT = 0xc4, - - M_DAC = 0xcc, - - M_RST0 = 0xd0, - M_RST1 = 0xd1, - M_RST2 = 0xd2, - M_RST3 = 0xd3, - M_RST4 = 0xd4, - M_RST5 = 0xd5, - M_RST6 = 0xd6, - M_RST7 = 0xd7, - - M_SOI = 0xd8, - M_EOI = 0xd9, - M_SOS = 0xda, - M_DQT = 0xdb, - M_DNL = 0xdc, - M_DRI = 0xdd, - M_DHP = 0xde, - M_EXP = 0xdf, - - M_APP0 = 0xe0, - M_APP1 = 0xe1, - M_APP2 = 0xe2, - M_APP3 = 0xe3, - M_APP4 = 0xe4, - M_APP5 = 0xe5, - M_APP6 = 0xe6, - M_APP7 = 0xe7, - M_APP8 = 0xe8, - M_APP9 = 0xe9, - M_APP10 = 0xea, - M_APP11 = 0xeb, - M_APP12 = 0xec, - M_APP13 = 0xed, - M_APP14 = 0xee, - M_APP15 = 0xef, - - M_JPG0 = 0xf0, - M_JPG13 = 0xfd, - M_COM = 0xfe, - - M_TEM = 0x01, - - M_ERROR = 0x100 -} JPEG_MARKER; - - -/* Private state */ - -typedef struct { - struct jpeg_marker_reader pub; /* public fields */ - - /* Application-overridable marker processing methods */ - jpeg_marker_parser_method process_COM; - jpeg_marker_parser_method process_APPn[16]; - - /* Limit on marker data length to save for each marker type */ - unsigned int length_limit_COM; - unsigned int length_limit_APPn[16]; - - /* Status of COM/APPn marker saving */ - jpeg_saved_marker_ptr cur_marker; /* NULL if not processing a marker */ - unsigned int bytes_read; /* data bytes read so far in marker */ - /* Note: cur_marker is not linked into marker_list until it's all read. */ -} my_marker_reader; - -typedef my_marker_reader * my_marker_ptr; - - -/* - * Macros for fetching data from the data source module. - * - * At all times, cinfo->src->next_input_byte and ->bytes_in_buffer reflect - * the current restart point; we update them only when we have reached a - * suitable place to restart if a suspension occurs. - */ - -/* Declare and initialize local copies of input pointer/count */ -#define INPUT_VARS(cinfo) \ - struct jpeg_source_mgr * datasrc = (cinfo)->src; \ - const JOCTET * next_input_byte = datasrc->next_input_byte; \ - size_t bytes_in_buffer = datasrc->bytes_in_buffer - -/* Unload the local copies --- do this only at a restart boundary */ -#define INPUT_SYNC(cinfo) \ - ( datasrc->next_input_byte = next_input_byte, \ - datasrc->bytes_in_buffer = bytes_in_buffer ) - -/* Reload the local copies --- used only in MAKE_BYTE_AVAIL */ -#define INPUT_RELOAD(cinfo) \ - ( next_input_byte = datasrc->next_input_byte, \ - bytes_in_buffer = datasrc->bytes_in_buffer ) - -/* Internal macro for INPUT_BYTE and INPUT_2BYTES: make a byte available. - * Note we do *not* do INPUT_SYNC before calling fill_input_buffer, - * but we must reload the local copies after a successful fill. - */ -#define MAKE_BYTE_AVAIL(cinfo,action) \ - if (bytes_in_buffer == 0) { \ - if (! (*datasrc->fill_input_buffer) (cinfo)) \ - { action; } \ - INPUT_RELOAD(cinfo); \ - } - -/* Read a byte into variable V. - * If must suspend, take the specified action (typically "return FALSE"). - */ -#define INPUT_BYTE(cinfo,V,action) \ - MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \ - bytes_in_buffer--; \ - V = GETJOCTET(*next_input_byte++); ) - -/* As above, but read two bytes interpreted as an unsigned 16-bit integer. - * V should be declared unsigned int or perhaps INT32. - */ -#define INPUT_2BYTES(cinfo,V,action) \ - MAKESTMT( MAKE_BYTE_AVAIL(cinfo,action); \ - bytes_in_buffer--; \ - V = ((unsigned int) GETJOCTET(*next_input_byte++)) << 8; \ - MAKE_BYTE_AVAIL(cinfo,action); \ - bytes_in_buffer--; \ - V += GETJOCTET(*next_input_byte++); ) - - -/* - * Routines to process JPEG markers. - * - * Entry condition: JPEG marker itself has been read and its code saved - * in cinfo->unread_marker; input restart point is just after the marker. - * - * Exit: if return TRUE, have read and processed any parameters, and have - * updated the restart point to point after the parameters. - * If return FALSE, was forced to suspend before reaching end of - * marker parameters; restart point has not been moved. Same routine - * will be called again after application supplies more input data. - * - * This approach to suspension assumes that all of a marker's parameters - * can fit into a single input bufferload. This should hold for "normal" - * markers. Some COM/APPn markers might have large parameter segments - * that might not fit. If we are simply dropping such a marker, we use - * skip_input_data to get past it, and thereby put the problem on the - * source manager's shoulders. If we are saving the marker's contents - * into memory, we use a slightly different convention: when forced to - * suspend, the marker processor updates the restart point to the end of - * what it's consumed (ie, the end of the buffer) before returning FALSE. - * On resumption, cinfo->unread_marker still contains the marker code, - * but the data source will point to the next chunk of marker data. - * The marker processor must retain internal state to deal with this. - * - * Note that we don't bother to avoid duplicate trace messages if a - * suspension occurs within marker parameters. Other side effects - * require more care. - */ - - -LOCAL(boolean) -get_soi (j_decompress_ptr cinfo) -/* Process an SOI marker */ -{ - int i; - - TRACEMS(cinfo, 1, JTRC_SOI); - - if (cinfo->marker->saw_SOI) - ERREXIT(cinfo, JERR_SOI_DUPLICATE); - - /* Reset all parameters that are defined to be reset by SOI */ - - for (i = 0; i < NUM_ARITH_TBLS; i++) { - cinfo->arith_dc_L[i] = 0; - cinfo->arith_dc_U[i] = 1; - cinfo->arith_ac_K[i] = 5; - } - cinfo->restart_interval = 0; - - /* Set initial assumptions for colorspace etc */ - - cinfo->jpeg_color_space = JCS_UNKNOWN; - cinfo->CCIR601_sampling = FALSE; /* Assume non-CCIR sampling??? */ - - cinfo->saw_JFIF_marker = FALSE; - cinfo->JFIF_major_version = 1; /* set default JFIF APP0 values */ - cinfo->JFIF_minor_version = 1; - cinfo->density_unit = 0; - cinfo->X_density = 1; - cinfo->Y_density = 1; - cinfo->saw_Adobe_marker = FALSE; - cinfo->Adobe_transform = 0; - - cinfo->marker->saw_SOI = TRUE; - - return TRUE; -} - - -LOCAL(boolean) -get_sof (j_decompress_ptr cinfo, boolean is_prog, boolean is_arith) -/* Process a SOFn marker */ -{ - INT32 length; - int c, ci; - jpeg_component_info * compptr; - INPUT_VARS(cinfo); - - cinfo->progressive_mode = is_prog; - cinfo->arith_code = is_arith; - - INPUT_2BYTES(cinfo, length, return FALSE); - - INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE); - INPUT_2BYTES(cinfo, cinfo->image_height, return FALSE); - INPUT_2BYTES(cinfo, cinfo->image_width, return FALSE); - INPUT_BYTE(cinfo, cinfo->num_components, return FALSE); - - length -= 8; - - TRACEMS4(cinfo, 1, JTRC_SOF, cinfo->unread_marker, - (int) cinfo->image_width, (int) cinfo->image_height, - cinfo->num_components); - - if (cinfo->marker->saw_SOF) - ERREXIT(cinfo, JERR_SOF_DUPLICATE); - - /* We don't support files in which the image height is initially specified */ - /* as 0 and is later redefined by DNL. As long as we have to check that, */ - /* might as well have a general sanity check. */ - if (cinfo->image_height <= 0 || cinfo->image_width <= 0 - || cinfo->num_components <= 0) - ERREXIT(cinfo, JERR_EMPTY_IMAGE); - - if (length != (cinfo->num_components * 3)) - ERREXIT(cinfo, JERR_BAD_LENGTH); - - if (cinfo->comp_info == NULL) /* do only once, even if suspend */ - cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->num_components * SIZEOF(jpeg_component_info)); - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - compptr->component_index = ci; - INPUT_BYTE(cinfo, compptr->component_id, return FALSE); - INPUT_BYTE(cinfo, c, return FALSE); - compptr->h_samp_factor = (c >> 4) & 15; - compptr->v_samp_factor = (c ) & 15; - INPUT_BYTE(cinfo, compptr->quant_tbl_no, return FALSE); - - TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT, - compptr->component_id, compptr->h_samp_factor, - compptr->v_samp_factor, compptr->quant_tbl_no); - } - - cinfo->marker->saw_SOF = TRUE; - - INPUT_SYNC(cinfo); - return TRUE; -} - - -LOCAL(boolean) -get_sos (j_decompress_ptr cinfo) -/* Process a SOS marker */ -{ - INT32 length; - int i, ci, n, c, cc; - jpeg_component_info * compptr; - INPUT_VARS(cinfo); - - if (! cinfo->marker->saw_SOF) - ERREXIT(cinfo, JERR_SOS_NO_SOF); - - INPUT_2BYTES(cinfo, length, return FALSE); - - INPUT_BYTE(cinfo, n, return FALSE); /* Number of components */ - - TRACEMS1(cinfo, 1, JTRC_SOS, n); - - if (length != (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN) - ERREXIT(cinfo, JERR_BAD_LENGTH); - - cinfo->comps_in_scan = n; - - /* Collect the component-spec parameters */ - - for (i = 0; i < n; i++) { - INPUT_BYTE(cinfo, cc, return FALSE); - INPUT_BYTE(cinfo, c, return FALSE); - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - if (cc == compptr->component_id) - goto id_found; - } - - ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc); - - id_found: - - cinfo->cur_comp_info[i] = compptr; - compptr->dc_tbl_no = (c >> 4) & 15; - compptr->ac_tbl_no = (c ) & 15; - - TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc, - compptr->dc_tbl_no, compptr->ac_tbl_no); - } - - /* Collect the additional scan parameters Ss, Se, Ah/Al. */ - INPUT_BYTE(cinfo, c, return FALSE); - cinfo->Ss = c; - INPUT_BYTE(cinfo, c, return FALSE); - cinfo->Se = c; - INPUT_BYTE(cinfo, c, return FALSE); - cinfo->Ah = (c >> 4) & 15; - cinfo->Al = (c ) & 15; - - TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo->Ss, cinfo->Se, - cinfo->Ah, cinfo->Al); - - /* Prepare to scan data & restart markers */ - cinfo->marker->next_restart_num = 0; - - /* Count another SOS marker */ - cinfo->input_scan_number++; - - INPUT_SYNC(cinfo); - return TRUE; -} - - -#ifdef D_ARITH_CODING_SUPPORTED - -LOCAL(boolean) -get_dac (j_decompress_ptr cinfo) -/* Process a DAC marker */ -{ - INT32 length; - int index, val; - INPUT_VARS(cinfo); - - INPUT_2BYTES(cinfo, length, return FALSE); - length -= 2; - - while (length > 0) { - INPUT_BYTE(cinfo, index, return FALSE); - INPUT_BYTE(cinfo, val, return FALSE); - - length -= 2; - - TRACEMS2(cinfo, 1, JTRC_DAC, index, val); - - if (index < 0 || index >= (2*NUM_ARITH_TBLS)) - ERREXIT1(cinfo, JERR_DAC_INDEX, index); - - if (index >= NUM_ARITH_TBLS) { /* define AC table */ - cinfo->arith_ac_K[index-NUM_ARITH_TBLS] = (UINT8) val; - } else { /* define DC table */ - cinfo->arith_dc_L[index] = (UINT8) (val & 0x0F); - cinfo->arith_dc_U[index] = (UINT8) (val >> 4); - if (cinfo->arith_dc_L[index] > cinfo->arith_dc_U[index]) - ERREXIT1(cinfo, JERR_DAC_VALUE, val); - } - } - - if (length != 0) - ERREXIT(cinfo, JERR_BAD_LENGTH); - - INPUT_SYNC(cinfo); - return TRUE; -} - -#else /* ! D_ARITH_CODING_SUPPORTED */ - -#define get_dac(cinfo) skip_variable(cinfo) - -#endif /* D_ARITH_CODING_SUPPORTED */ - - -LOCAL(boolean) -get_dht (j_decompress_ptr cinfo) -/* Process a DHT marker */ -{ - INT32 length; - UINT8 bits[17]; - UINT8 huffval[256]; - int i, index, count; - JHUFF_TBL **htblptr; - INPUT_VARS(cinfo); - - INPUT_2BYTES(cinfo, length, return FALSE); - length -= 2; - - while (length > 16) { - INPUT_BYTE(cinfo, index, return FALSE); - - TRACEMS1(cinfo, 1, JTRC_DHT, index); - - bits[0] = 0; - count = 0; - for (i = 1; i <= 16; i++) { - INPUT_BYTE(cinfo, bits[i], return FALSE); - count += bits[i]; - } - - length -= 1 + 16; - - TRACEMS8(cinfo, 2, JTRC_HUFFBITS, - bits[1], bits[2], bits[3], bits[4], - bits[5], bits[6], bits[7], bits[8]); - TRACEMS8(cinfo, 2, JTRC_HUFFBITS, - bits[9], bits[10], bits[11], bits[12], - bits[13], bits[14], bits[15], bits[16]); - - /* Here we just do minimal validation of the counts to avoid walking - * off the end of our table space. jdhuff.c will check more carefully. - */ - if (count > 256 || ((INT32) count) > length) - ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); - - for (i = 0; i < count; i++) - INPUT_BYTE(cinfo, huffval[i], return FALSE); - - length -= count; - - if (index & 0x10) { /* AC table definition */ - index -= 0x10; - htblptr = &cinfo->ac_huff_tbl_ptrs[index]; - } else { /* DC table definition */ - htblptr = &cinfo->dc_huff_tbl_ptrs[index]; - } - - if (index < 0 || index >= NUM_HUFF_TBLS) - ERREXIT1(cinfo, JERR_DHT_INDEX, index); - - if (*htblptr == NULL) - *htblptr = jpeg_alloc_huff_table((j_common_ptr) cinfo); - - MEMCOPY((*htblptr)->bits, bits, SIZEOF((*htblptr)->bits)); - MEMCOPY((*htblptr)->huffval, huffval, SIZEOF((*htblptr)->huffval)); - } - - if (length != 0) - ERREXIT(cinfo, JERR_BAD_LENGTH); - - INPUT_SYNC(cinfo); - return TRUE; -} - - -LOCAL(boolean) -get_dqt (j_decompress_ptr cinfo) -/* Process a DQT marker */ -{ - INT32 length; - int n, i, prec; - unsigned int tmp; - JQUANT_TBL *quant_ptr; - INPUT_VARS(cinfo); - - INPUT_2BYTES(cinfo, length, return FALSE); - length -= 2; - - while (length > 0) { - INPUT_BYTE(cinfo, n, return FALSE); - prec = n >> 4; - n &= 0x0F; - - TRACEMS2(cinfo, 1, JTRC_DQT, n, prec); - - if (n >= NUM_QUANT_TBLS) - ERREXIT1(cinfo, JERR_DQT_INDEX, n); - - if (cinfo->quant_tbl_ptrs[n] == NULL) - cinfo->quant_tbl_ptrs[n] = jpeg_alloc_quant_table((j_common_ptr) cinfo); - quant_ptr = cinfo->quant_tbl_ptrs[n]; - - for (i = 0; i < DCTSIZE2; i++) { - if (prec) - INPUT_2BYTES(cinfo, tmp, return FALSE); - else - INPUT_BYTE(cinfo, tmp, return FALSE); - /* We convert the zigzag-order table to natural array order. */ - quant_ptr->quantval[jpeg_natural_order[i]] = (UINT16) tmp; - } - - if (cinfo->err->trace_level >= 2) { - for (i = 0; i < DCTSIZE2; i += 8) { - TRACEMS8(cinfo, 2, JTRC_QUANTVALS, - quant_ptr->quantval[i], quant_ptr->quantval[i+1], - quant_ptr->quantval[i+2], quant_ptr->quantval[i+3], - quant_ptr->quantval[i+4], quant_ptr->quantval[i+5], - quant_ptr->quantval[i+6], quant_ptr->quantval[i+7]); - } - } - - length -= DCTSIZE2+1; - if (prec) length -= DCTSIZE2; - } - - if (length != 0) - ERREXIT(cinfo, JERR_BAD_LENGTH); - - INPUT_SYNC(cinfo); - return TRUE; -} - - -LOCAL(boolean) -get_dri (j_decompress_ptr cinfo) -/* Process a DRI marker */ -{ - INT32 length; - unsigned int tmp; - INPUT_VARS(cinfo); - - INPUT_2BYTES(cinfo, length, return FALSE); - - if (length != 4) - ERREXIT(cinfo, JERR_BAD_LENGTH); - - INPUT_2BYTES(cinfo, tmp, return FALSE); - - TRACEMS1(cinfo, 1, JTRC_DRI, tmp); - - cinfo->restart_interval = tmp; - - INPUT_SYNC(cinfo); - return TRUE; -} - - -/* - * Routines for processing APPn and COM markers. - * These are either saved in memory or discarded, per application request. - * APP0 and APP14 are specially checked to see if they are - * JFIF and Adobe markers, respectively. - */ - -#define APP0_DATA_LEN 14 /* Length of interesting data in APP0 */ -#define APP14_DATA_LEN 12 /* Length of interesting data in APP14 */ -#define APPN_DATA_LEN 14 /* Must be the largest of the above!! */ - - -LOCAL(void) -examine_app0 (j_decompress_ptr cinfo, JOCTET FAR * data, - unsigned int datalen, INT32 remaining) -/* Examine first few bytes from an APP0. - * Take appropriate action if it is a JFIF marker. - * datalen is # of bytes at data[], remaining is length of rest of marker data. - */ -{ - INT32 totallen = (INT32) datalen + remaining; - - if (datalen >= APP0_DATA_LEN && - GETJOCTET(data[0]) == 0x4A && - GETJOCTET(data[1]) == 0x46 && - GETJOCTET(data[2]) == 0x49 && - GETJOCTET(data[3]) == 0x46 && - GETJOCTET(data[4]) == 0) { - /* Found JFIF APP0 marker: save info */ - cinfo->saw_JFIF_marker = TRUE; - cinfo->JFIF_major_version = GETJOCTET(data[5]); - cinfo->JFIF_minor_version = GETJOCTET(data[6]); - cinfo->density_unit = GETJOCTET(data[7]); - cinfo->X_density = (GETJOCTET(data[8]) << 8) + GETJOCTET(data[9]); - cinfo->Y_density = (GETJOCTET(data[10]) << 8) + GETJOCTET(data[11]); - /* Check version. - * Major version must be 1, anything else signals an incompatible change. - * (We used to treat this as an error, but now it's a nonfatal warning, - * because some bozo at Hijaak couldn't read the spec.) - * Minor version should be 0..2, but process anyway if newer. - */ - if (cinfo->JFIF_major_version != 1) - WARNMS2(cinfo, JWRN_JFIF_MAJOR, - cinfo->JFIF_major_version, cinfo->JFIF_minor_version); - /* Generate trace messages */ - TRACEMS5(cinfo, 1, JTRC_JFIF, - cinfo->JFIF_major_version, cinfo->JFIF_minor_version, - cinfo->X_density, cinfo->Y_density, cinfo->density_unit); - /* Validate thumbnail dimensions and issue appropriate messages */ - if (GETJOCTET(data[12]) | GETJOCTET(data[13])) - TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, - GETJOCTET(data[12]), GETJOCTET(data[13])); - totallen -= APP0_DATA_LEN; - if (totallen != - ((INT32)GETJOCTET(data[12]) * (INT32)GETJOCTET(data[13]) * (INT32) 3)) - TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, (int) totallen); - } else if (datalen >= 6 && - GETJOCTET(data[0]) == 0x4A && - GETJOCTET(data[1]) == 0x46 && - GETJOCTET(data[2]) == 0x58 && - GETJOCTET(data[3]) == 0x58 && - GETJOCTET(data[4]) == 0) { - /* Found JFIF "JFXX" extension APP0 marker */ - /* The library doesn't actually do anything with these, - * but we try to produce a helpful trace message. - */ - switch (GETJOCTET(data[5])) { - case 0x10: - TRACEMS1(cinfo, 1, JTRC_THUMB_JPEG, (int) totallen); - break; - case 0x11: - TRACEMS1(cinfo, 1, JTRC_THUMB_PALETTE, (int) totallen); - break; - case 0x13: - TRACEMS1(cinfo, 1, JTRC_THUMB_RGB, (int) totallen); - break; - default: - TRACEMS2(cinfo, 1, JTRC_JFIF_EXTENSION, - GETJOCTET(data[5]), (int) totallen); - break; - } - } else { - /* Start of APP0 does not match "JFIF" or "JFXX", or too short */ - TRACEMS1(cinfo, 1, JTRC_APP0, (int) totallen); - } -} - - -LOCAL(void) -examine_app14 (j_decompress_ptr cinfo, JOCTET FAR * data, - unsigned int datalen, INT32 remaining) -/* Examine first few bytes from an APP14. - * Take appropriate action if it is an Adobe marker. - * datalen is # of bytes at data[], remaining is length of rest of marker data. - */ -{ - unsigned int version, flags0, flags1, transform; - - if (datalen >= APP14_DATA_LEN && - GETJOCTET(data[0]) == 0x41 && - GETJOCTET(data[1]) == 0x64 && - GETJOCTET(data[2]) == 0x6F && - GETJOCTET(data[3]) == 0x62 && - GETJOCTET(data[4]) == 0x65) { - /* Found Adobe APP14 marker */ - version = (GETJOCTET(data[5]) << 8) + GETJOCTET(data[6]); - flags0 = (GETJOCTET(data[7]) << 8) + GETJOCTET(data[8]); - flags1 = (GETJOCTET(data[9]) << 8) + GETJOCTET(data[10]); - transform = GETJOCTET(data[11]); - TRACEMS4(cinfo, 1, JTRC_ADOBE, version, flags0, flags1, transform); - cinfo->saw_Adobe_marker = TRUE; - cinfo->Adobe_transform = (UINT8) transform; - } else { - /* Start of APP14 does not match "Adobe", or too short */ - TRACEMS1(cinfo, 1, JTRC_APP14, (int) (datalen + remaining)); - } -} - - -METHODDEF(boolean) -get_interesting_appn (j_decompress_ptr cinfo) -/* Process an APP0 or APP14 marker without saving it */ -{ - INT32 length; - JOCTET b[APPN_DATA_LEN]; - unsigned int i, numtoread; - INPUT_VARS(cinfo); - - INPUT_2BYTES(cinfo, length, return FALSE); - length -= 2; - - /* get the interesting part of the marker data */ - if (length >= APPN_DATA_LEN) - numtoread = APPN_DATA_LEN; - else if (length > 0) - numtoread = (unsigned int) length; - else - numtoread = 0; - for (i = 0; i < numtoread; i++) - INPUT_BYTE(cinfo, b[i], return FALSE); - length -= numtoread; - - /* process it */ - switch (cinfo->unread_marker) { - case M_APP0: - examine_app0(cinfo, (JOCTET FAR *) b, numtoread, length); - break; - case M_APP14: - examine_app14(cinfo, (JOCTET FAR *) b, numtoread, length); - break; - default: - /* can't get here unless jpeg_save_markers chooses wrong processor */ - ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker); - break; - } - - /* skip any remaining data -- could be lots */ - INPUT_SYNC(cinfo); - if (length > 0) - (*cinfo->src->skip_input_data) (cinfo, (long) length); - - return TRUE; -} - - -#ifdef SAVE_MARKERS_SUPPORTED - -METHODDEF(boolean) -save_marker (j_decompress_ptr cinfo) -/* Save an APPn or COM marker into the marker list */ -{ - my_marker_ptr marker = (my_marker_ptr) cinfo->marker; - jpeg_saved_marker_ptr cur_marker = marker->cur_marker; - unsigned int bytes_read, data_length; - JOCTET FAR * data; - INT32 length = 0; - INPUT_VARS(cinfo); - - if (cur_marker == NULL) { - /* begin reading a marker */ - INPUT_2BYTES(cinfo, length, return FALSE); - length -= 2; - if (length >= 0) { /* watch out for bogus length word */ - /* figure out how much we want to save */ - unsigned int limit; - if (cinfo->unread_marker == (int) M_COM) - limit = marker->length_limit_COM; - else - limit = marker->length_limit_APPn[cinfo->unread_marker - (int) M_APP0]; - if ((unsigned int) length < limit) - limit = (unsigned int) length; - /* allocate and initialize the marker item */ - cur_marker = (jpeg_saved_marker_ptr) - (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(struct jpeg_marker_struct) + limit); - cur_marker->next = NULL; - cur_marker->marker = (UINT8) cinfo->unread_marker; - cur_marker->original_length = (unsigned int) length; - cur_marker->data_length = limit; - /* data area is just beyond the jpeg_marker_struct */ - data = cur_marker->data = (JOCTET FAR *) (cur_marker + 1); - marker->cur_marker = cur_marker; - marker->bytes_read = 0; - bytes_read = 0; - data_length = limit; - } else { - /* deal with bogus length word */ - bytes_read = data_length = 0; - data = NULL; - } - } else { - /* resume reading a marker */ - bytes_read = marker->bytes_read; - data_length = cur_marker->data_length; - data = cur_marker->data + bytes_read; - } - - while (bytes_read < data_length) { - INPUT_SYNC(cinfo); /* move the restart point to here */ - marker->bytes_read = bytes_read; - /* If there's not at least one byte in buffer, suspend */ - MAKE_BYTE_AVAIL(cinfo, return FALSE); - /* Copy bytes with reasonable rapidity */ - while (bytes_read < data_length && bytes_in_buffer > 0) { - *data++ = *next_input_byte++; - bytes_in_buffer--; - bytes_read++; - } - } - - /* Done reading what we want to read */ - if (cur_marker != NULL) { /* will be NULL if bogus length word */ - /* Add new marker to end of list */ - if (cinfo->marker_list == NULL) { - cinfo->marker_list = cur_marker; - } else { - jpeg_saved_marker_ptr prev = cinfo->marker_list; - while (prev->next != NULL) - prev = prev->next; - prev->next = cur_marker; - } - /* Reset pointer & calc remaining data length */ - data = cur_marker->data; - length = cur_marker->original_length - data_length; - } - /* Reset to initial state for next marker */ - marker->cur_marker = NULL; - - /* Process the marker if interesting; else just make a generic trace msg */ - switch (cinfo->unread_marker) { - case M_APP0: - examine_app0(cinfo, data, data_length, length); - break; - case M_APP14: - examine_app14(cinfo, data, data_length, length); - break; - default: - TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo->unread_marker, - (int) (data_length + length)); - break; - } - - /* skip any remaining data -- could be lots */ - INPUT_SYNC(cinfo); /* do before skip_input_data */ - if (length > 0) - (*cinfo->src->skip_input_data) (cinfo, (long) length); - - return TRUE; -} - -#endif /* SAVE_MARKERS_SUPPORTED */ - - -METHODDEF(boolean) -skip_variable (j_decompress_ptr cinfo) -/* Skip over an unknown or uninteresting variable-length marker */ -{ - INT32 length; - INPUT_VARS(cinfo); - - INPUT_2BYTES(cinfo, length, return FALSE); - length -= 2; - - TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo->unread_marker, (int) length); - - INPUT_SYNC(cinfo); /* do before skip_input_data */ - if (length > 0) - (*cinfo->src->skip_input_data) (cinfo, (long) length); - - return TRUE; -} - - -/* - * Find the next JPEG marker, save it in cinfo->unread_marker. - * Returns FALSE if had to suspend before reaching a marker; - * in that case cinfo->unread_marker is unchanged. - * - * Note that the result might not be a valid marker code, - * but it will never be 0 or FF. - */ - -LOCAL(boolean) -next_marker (j_decompress_ptr cinfo) -{ - int c; - INPUT_VARS(cinfo); - - for (;;) { - INPUT_BYTE(cinfo, c, return FALSE); - /* Skip any non-FF bytes. - * This may look a bit inefficient, but it will not occur in a valid file. - * We sync after each discarded byte so that a suspending data source - * can discard the byte from its buffer. - */ - while (c != 0xFF) { - cinfo->marker->discarded_bytes++; - INPUT_SYNC(cinfo); - INPUT_BYTE(cinfo, c, return FALSE); - } - /* This loop swallows any duplicate FF bytes. Extra FFs are legal as - * pad bytes, so don't count them in discarded_bytes. We assume there - * will not be so many consecutive FF bytes as to overflow a suspending - * data source's input buffer. - */ - do { - INPUT_BYTE(cinfo, c, return FALSE); - } while (c == 0xFF); - if (c != 0) - break; /* found a valid marker, exit loop */ - /* Reach here if we found a stuffed-zero data sequence (FF/00). - * Discard it and loop back to try again. - */ - cinfo->marker->discarded_bytes += 2; - INPUT_SYNC(cinfo); - } - - if (cinfo->marker->discarded_bytes != 0) { - WARNMS2(cinfo, JWRN_EXTRANEOUS_DATA, cinfo->marker->discarded_bytes, c); - cinfo->marker->discarded_bytes = 0; - } - - cinfo->unread_marker = c; - - INPUT_SYNC(cinfo); - return TRUE; -} - - -LOCAL(boolean) -first_marker (j_decompress_ptr cinfo) -/* Like next_marker, but used to obtain the initial SOI marker. */ -/* For this marker, we do not allow preceding garbage or fill; otherwise, - * we might well scan an entire input file before realizing it ain't JPEG. - * If an application wants to process non-JFIF files, it must seek to the - * SOI before calling the JPEG library. - */ -{ - int c, c2; - INPUT_VARS(cinfo); - - INPUT_BYTE(cinfo, c, return FALSE); - INPUT_BYTE(cinfo, c2, return FALSE); - if (c != 0xFF || c2 != (int) M_SOI) - ERREXIT2(cinfo, JERR_NO_SOI, c, c2); - - cinfo->unread_marker = c2; - - INPUT_SYNC(cinfo); - return TRUE; -} - - -/* - * Read markers until SOS or EOI. - * - * Returns same codes as are defined for jpeg_consume_input: - * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. - */ - -METHODDEF(int) -read_markers (j_decompress_ptr cinfo) -{ - /* Outer loop repeats once for each marker. */ - for (;;) { - /* Collect the marker proper, unless we already did. */ - /* NB: first_marker() enforces the requirement that SOI appear first. */ - if (cinfo->unread_marker == 0) { - if (! cinfo->marker->saw_SOI) { - if (! first_marker(cinfo)) - return JPEG_SUSPENDED; - } else { - if (! next_marker(cinfo)) - return JPEG_SUSPENDED; - } - } - /* At this point cinfo->unread_marker contains the marker code and the - * input point is just past the marker proper, but before any parameters. - * A suspension will cause us to return with this state still true. - */ - switch (cinfo->unread_marker) { - case M_SOI: - if (! get_soi(cinfo)) - return JPEG_SUSPENDED; - break; - - case M_SOF0: /* Baseline */ - case M_SOF1: /* Extended sequential, Huffman */ - if (! get_sof(cinfo, FALSE, FALSE)) - return JPEG_SUSPENDED; - break; - - case M_SOF2: /* Progressive, Huffman */ - if (! get_sof(cinfo, TRUE, FALSE)) - return JPEG_SUSPENDED; - break; - - case M_SOF9: /* Extended sequential, arithmetic */ - if (! get_sof(cinfo, FALSE, TRUE)) - return JPEG_SUSPENDED; - break; - - case M_SOF10: /* Progressive, arithmetic */ - if (! get_sof(cinfo, TRUE, TRUE)) - return JPEG_SUSPENDED; - break; - - /* Currently unsupported SOFn types */ - case M_SOF3: /* Lossless, Huffman */ - case M_SOF5: /* Differential sequential, Huffman */ - case M_SOF6: /* Differential progressive, Huffman */ - case M_SOF7: /* Differential lossless, Huffman */ - case M_JPG: /* Reserved for JPEG extensions */ - case M_SOF11: /* Lossless, arithmetic */ - case M_SOF13: /* Differential sequential, arithmetic */ - case M_SOF14: /* Differential progressive, arithmetic */ - case M_SOF15: /* Differential lossless, arithmetic */ - ERREXIT1(cinfo, JERR_SOF_UNSUPPORTED, cinfo->unread_marker); - break; - - case M_SOS: - if (! get_sos(cinfo)) - return JPEG_SUSPENDED; - cinfo->unread_marker = 0; /* processed the marker */ - return JPEG_REACHED_SOS; - - case M_EOI: - TRACEMS(cinfo, 1, JTRC_EOI); - cinfo->unread_marker = 0; /* processed the marker */ - return JPEG_REACHED_EOI; - - case M_DAC: - if (! get_dac(cinfo)) - return JPEG_SUSPENDED; - break; - - case M_DHT: - if (! get_dht(cinfo)) - return JPEG_SUSPENDED; - break; - - case M_DQT: - if (! get_dqt(cinfo)) - return JPEG_SUSPENDED; - break; - - case M_DRI: - if (! get_dri(cinfo)) - return JPEG_SUSPENDED; - break; - - case M_APP0: - case M_APP1: - case M_APP2: - case M_APP3: - case M_APP4: - case M_APP5: - case M_APP6: - case M_APP7: - case M_APP8: - case M_APP9: - case M_APP10: - case M_APP11: - case M_APP12: - case M_APP13: - case M_APP14: - case M_APP15: - if (! (*((my_marker_ptr) cinfo->marker)->process_APPn[ - cinfo->unread_marker - (int) M_APP0]) (cinfo)) - return JPEG_SUSPENDED; - break; - - case M_COM: - if (! (*((my_marker_ptr) cinfo->marker)->process_COM) (cinfo)) - return JPEG_SUSPENDED; - break; - - case M_RST0: /* these are all parameterless */ - case M_RST1: - case M_RST2: - case M_RST3: - case M_RST4: - case M_RST5: - case M_RST6: - case M_RST7: - case M_TEM: - TRACEMS1(cinfo, 1, JTRC_PARMLESS_MARKER, cinfo->unread_marker); - break; - - case M_DNL: /* Ignore DNL ... perhaps the wrong thing */ - if (! skip_variable(cinfo)) - return JPEG_SUSPENDED; - break; - - default: /* must be DHP, EXP, JPGn, or RESn */ - /* For now, we treat the reserved markers as fatal errors since they are - * likely to be used to signal incompatible JPEG Part 3 extensions. - * Once the JPEG 3 version-number marker is well defined, this code - * ought to change! - */ - ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo->unread_marker); - break; - } - /* Successfully processed marker, so reset state variable */ - cinfo->unread_marker = 0; - } /* end loop */ -} - - -/* - * Read a restart marker, which is expected to appear next in the datastream; - * if the marker is not there, take appropriate recovery action. - * Returns FALSE if suspension is required. - * - * This is called by the entropy decoder after it has read an appropriate - * number of MCUs. cinfo->unread_marker may be nonzero if the entropy decoder - * has already read a marker from the data source. Under normal conditions - * cinfo->unread_marker will be reset to 0 before returning; if not reset, - * it holds a marker which the decoder will be unable to read past. - */ - -METHODDEF(boolean) -read_restart_marker (j_decompress_ptr cinfo) -{ - /* Obtain a marker unless we already did. */ - /* Note that next_marker will complain if it skips any data. */ - if (cinfo->unread_marker == 0) { - if (! next_marker(cinfo)) - return FALSE; - } - - if (cinfo->unread_marker == - ((int) M_RST0 + cinfo->marker->next_restart_num)) { - /* Normal case --- swallow the marker and let entropy decoder continue */ - TRACEMS1(cinfo, 3, JTRC_RST, cinfo->marker->next_restart_num); - cinfo->unread_marker = 0; - } else { - /* Uh-oh, the restart markers have been messed up. */ - /* Let the data source manager determine how to resync. */ - if (! (*cinfo->src->resync_to_restart) (cinfo, - cinfo->marker->next_restart_num)) - return FALSE; - } - - /* Update next-restart state */ - cinfo->marker->next_restart_num = (cinfo->marker->next_restart_num + 1) & 7; - - return TRUE; -} - - -/* - * This is the default resync_to_restart method for data source managers - * to use if they don't have any better approach. Some data source managers - * may be able to back up, or may have additional knowledge about the data - * which permits a more intelligent recovery strategy; such managers would - * presumably supply their own resync method. - * - * read_restart_marker calls resync_to_restart if it finds a marker other than - * the restart marker it was expecting. (This code is *not* used unless - * a nonzero restart interval has been declared.) cinfo->unread_marker is - * the marker code actually found (might be anything, except 0 or FF). - * The desired restart marker number (0..7) is passed as a parameter. - * This routine is supposed to apply whatever error recovery strategy seems - * appropriate in order to position the input stream to the next data segment. - * Note that cinfo->unread_marker is treated as a marker appearing before - * the current data-source input point; usually it should be reset to zero - * before returning. - * Returns FALSE if suspension is required. - * - * This implementation is substantially constrained by wanting to treat the - * input as a data stream; this means we can't back up. Therefore, we have - * only the following actions to work with: - * 1. Simply discard the marker and let the entropy decoder resume at next - * byte of file. - * 2. Read forward until we find another marker, discarding intervening - * data. (In theory we could look ahead within the current bufferload, - * without having to discard data if we don't find the desired marker. - * This idea is not implemented here, in part because it makes behavior - * dependent on buffer size and chance buffer-boundary positions.) - * 3. Leave the marker unread (by failing to zero cinfo->unread_marker). - * This will cause the entropy decoder to process an empty data segment, - * inserting dummy zeroes, and then we will reprocess the marker. - * - * #2 is appropriate if we think the desired marker lies ahead, while #3 is - * appropriate if the found marker is a future restart marker (indicating - * that we have missed the desired restart marker, probably because it got - * corrupted). - * We apply #2 or #3 if the found marker is a restart marker no more than - * two counts behind or ahead of the expected one. We also apply #2 if the - * found marker is not a legal JPEG marker code (it's certainly bogus data). - * If the found marker is a restart marker more than 2 counts away, we do #1 - * (too much risk that the marker is erroneous; with luck we will be able to - * resync at some future point). - * For any valid non-restart JPEG marker, we apply #3. This keeps us from - * overrunning the end of a scan. An implementation limited to single-scan - * files might find it better to apply #2 for markers other than EOI, since - * any other marker would have to be bogus data in that case. - */ - -GLOBAL(boolean) -jpeg_resync_to_restart (j_decompress_ptr cinfo, int desired) -{ - int marker = cinfo->unread_marker; - int action = 1; - - /* Always put up a warning. */ - WARNMS2(cinfo, JWRN_MUST_RESYNC, marker, desired); - - /* Outer loop handles repeated decision after scanning forward. */ - for (;;) { - if (marker < (int) M_SOF0) - action = 2; /* invalid marker */ - else if (marker < (int) M_RST0 || marker > (int) M_RST7) - action = 3; /* valid non-restart marker */ - else { - if (marker == ((int) M_RST0 + ((desired+1) & 7)) || - marker == ((int) M_RST0 + ((desired+2) & 7))) - action = 3; /* one of the next two expected restarts */ - else if (marker == ((int) M_RST0 + ((desired-1) & 7)) || - marker == ((int) M_RST0 + ((desired-2) & 7))) - action = 2; /* a prior restart, so advance */ - else - action = 1; /* desired restart or too far away */ - } - TRACEMS2(cinfo, 4, JTRC_RECOVERY_ACTION, marker, action); - switch (action) { - case 1: - /* Discard marker and let entropy decoder resume processing. */ - cinfo->unread_marker = 0; - return TRUE; - case 2: - /* Scan to the next marker, and repeat the decision loop. */ - if (! next_marker(cinfo)) - return FALSE; - marker = cinfo->unread_marker; - break; - case 3: - /* Return without advancing past this marker. */ - /* Entropy decoder will be forced to process an empty segment. */ - return TRUE; - } - } /* end loop */ -} - - -/* - * Reset marker processing state to begin a fresh datastream. - */ - -METHODDEF(void) -reset_marker_reader (j_decompress_ptr cinfo) -{ - my_marker_ptr marker = (my_marker_ptr) cinfo->marker; - - cinfo->comp_info = NULL; /* until allocated by get_sof */ - cinfo->input_scan_number = 0; /* no SOS seen yet */ - cinfo->unread_marker = 0; /* no pending marker */ - marker->pub.saw_SOI = FALSE; /* set internal state too */ - marker->pub.saw_SOF = FALSE; - marker->pub.discarded_bytes = 0; - marker->cur_marker = NULL; -} - - -/* - * Initialize the marker reader module. - * This is called only once, when the decompression object is created. - */ - -GLOBAL(void) -jinit_marker_reader (j_decompress_ptr cinfo) -{ - my_marker_ptr marker; - int i; - - /* Create subobject in permanent pool */ - marker = (my_marker_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, - SIZEOF(my_marker_reader)); - cinfo->marker = (struct jpeg_marker_reader *) marker; - /* Initialize public method pointers */ - marker->pub.reset_marker_reader = reset_marker_reader; - marker->pub.read_markers = read_markers; - marker->pub.read_restart_marker = read_restart_marker; - /* Initialize COM/APPn processing. - * By default, we examine and then discard APP0 and APP14, - * but simply discard COM and all other APPn. - */ - marker->process_COM = skip_variable; - marker->length_limit_COM = 0; - for (i = 0; i < 16; i++) { - marker->process_APPn[i] = skip_variable; - marker->length_limit_APPn[i] = 0; - } - marker->process_APPn[0] = get_interesting_appn; - marker->process_APPn[14] = get_interesting_appn; - /* Reset marker processing state */ - reset_marker_reader(cinfo); -} - - -/* - * Control saving of COM and APPn markers into marker_list. - */ - -#ifdef SAVE_MARKERS_SUPPORTED - -GLOBAL(void) -jpeg_save_markers (j_decompress_ptr cinfo, int marker_code, - unsigned int length_limit) -{ - my_marker_ptr marker = (my_marker_ptr) cinfo->marker; - long maxlength; - jpeg_marker_parser_method processor; - - /* Length limit mustn't be larger than what we can allocate - * (should only be a concern in a 16-bit environment). - */ - maxlength = cinfo->mem->max_alloc_chunk - SIZEOF(struct jpeg_marker_struct); - if (((long) length_limit) > maxlength) - length_limit = (unsigned int) maxlength; - - /* Choose processor routine to use. - * APP0/APP14 have special requirements. - */ - if (length_limit) { - processor = save_marker; - /* If saving APP0/APP14, save at least enough for our internal use. */ - if (marker_code == (int) M_APP0 && length_limit < APP0_DATA_LEN) - length_limit = APP0_DATA_LEN; - else if (marker_code == (int) M_APP14 && length_limit < APP14_DATA_LEN) - length_limit = APP14_DATA_LEN; - } else { - processor = skip_variable; - /* If discarding APP0/APP14, use our regular on-the-fly processor. */ - if (marker_code == (int) M_APP0 || marker_code == (int) M_APP14) - processor = get_interesting_appn; - } - - if (marker_code == (int) M_COM) { - marker->process_COM = processor; - marker->length_limit_COM = length_limit; - } else if (marker_code >= (int) M_APP0 && marker_code <= (int) M_APP15) { - marker->process_APPn[marker_code - (int) M_APP0] = processor; - marker->length_limit_APPn[marker_code - (int) M_APP0] = length_limit; - } else - ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code); -} - -#endif /* SAVE_MARKERS_SUPPORTED */ - - -/* - * Install a special processing method for COM or APPn markers. - */ - -GLOBAL(void) -jpeg_set_marker_processor (j_decompress_ptr cinfo, int marker_code, - jpeg_marker_parser_method routine) -{ - my_marker_ptr marker = (my_marker_ptr) cinfo->marker; - - if (marker_code == (int) M_COM) - marker->process_COM = routine; - else if (marker_code >= (int) M_APP0 && marker_code <= (int) M_APP15) - marker->process_APPn[marker_code - (int) M_APP0] = routine; - else - ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, marker_code); -} diff --git a/project/jni/jpeg/jdmaster.c b/project/jni/jpeg/jdmaster.c deleted file mode 100644 index 89250133a..000000000 --- a/project/jni/jpeg/jdmaster.c +++ /dev/null @@ -1,576 +0,0 @@ -/* - * jdmaster.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains master control logic for the JPEG decompressor. - * These routines are concerned with selecting the modules to be executed - * and with determining the number of passes and the work to be done in each - * pass. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Private state */ - -typedef struct { - struct jpeg_decomp_master pub; /* public fields */ - - int pass_number; /* # of passes completed */ - - boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */ - - /* Saved references to initialized quantizer modules, - * in case we need to switch modes. - */ - struct jpeg_color_quantizer * quantizer_1pass; - struct jpeg_color_quantizer * quantizer_2pass; -} my_decomp_master; - -typedef my_decomp_master * my_master_ptr; - - -/* - * Determine whether merged upsample/color conversion should be used. - * CRUCIAL: this must match the actual capabilities of jdmerge.c! - */ - -LOCAL(boolean) -use_merged_upsample (j_decompress_ptr cinfo) -{ -#ifdef UPSAMPLE_MERGING_SUPPORTED - /* Merging is the equivalent of plain box-filter upsampling */ - if (cinfo->do_fancy_upsampling || cinfo->CCIR601_sampling) - return FALSE; - -#ifdef ANDROID_RGB - /* jdmerge.c only supports YCC=>RGB565 and YCC=>RGB color conversion */ - if (cinfo->jpeg_color_space != JCS_YCbCr || - cinfo->num_components != 3 || - cinfo->out_color_components != 3 || - (cinfo->out_color_space != JCS_RGB_565 && - cinfo->out_color_space != JCS_RGB)) { - return FALSE; - } -#else - /* jdmerge.c only supports YCC=>RGB color conversion */ - if (cinfo->jpeg_color_space != JCS_YCbCr || cinfo->num_components != 3 || - cinfo->out_color_space != JCS_RGB || - cinfo->out_color_components != RGB_PIXELSIZE) - return FALSE; -#endif - - /* and it only handles 2h1v or 2h2v sampling ratios */ - if (cinfo->comp_info[0].h_samp_factor != 2 || - cinfo->comp_info[1].h_samp_factor != 1 || - cinfo->comp_info[2].h_samp_factor != 1 || - cinfo->comp_info[0].v_samp_factor > 2 || - cinfo->comp_info[1].v_samp_factor != 1 || - cinfo->comp_info[2].v_samp_factor != 1) - return FALSE; - /* furthermore, it doesn't work if we've scaled the IDCTs differently */ - if (cinfo->comp_info[0].DCT_scaled_size != cinfo->min_DCT_scaled_size || - cinfo->comp_info[1].DCT_scaled_size != cinfo->min_DCT_scaled_size || - cinfo->comp_info[2].DCT_scaled_size != cinfo->min_DCT_scaled_size) - return FALSE; - /* ??? also need to test for upsample-time rescaling, when & if supported */ - return TRUE; /* by golly, it'll work... */ -#else - return FALSE; -#endif -} - - -/* - * Compute output image dimensions and related values. - * NOTE: this is exported for possible use by application. - * Hence it mustn't do anything that can't be done twice. - * Also note that it may be called before the master module is initialized! - */ - -GLOBAL(void) -jpeg_calc_output_dimensions (j_decompress_ptr cinfo) -/* Do computations that are needed before master selection phase */ -{ -#ifdef IDCT_SCALING_SUPPORTED - int ci; - jpeg_component_info *compptr; -#endif - - /* Prevent application from calling me at wrong times */ - if (cinfo->global_state != DSTATE_READY) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - -#ifdef IDCT_SCALING_SUPPORTED - - /* Compute actual output image dimensions and DCT scaling choices. */ - if (cinfo->scale_num * 8 <= cinfo->scale_denom) { - /* Provide 1/8 scaling */ - cinfo->output_width = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width, 8L); - cinfo->output_height = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, 8L); - cinfo->min_DCT_scaled_size = 1; - } else if (cinfo->scale_num * 4 <= cinfo->scale_denom) { - /* Provide 1/4 scaling */ - cinfo->output_width = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width, 4L); - cinfo->output_height = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, 4L); - cinfo->min_DCT_scaled_size = 2; - } else if (cinfo->scale_num * 2 <= cinfo->scale_denom) { - /* Provide 1/2 scaling */ - cinfo->output_width = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width, 2L); - cinfo->output_height = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height, 2L); - cinfo->min_DCT_scaled_size = 4; - } else { - /* Provide 1/1 scaling */ - cinfo->output_width = cinfo->image_width; - cinfo->output_height = cinfo->image_height; - cinfo->min_DCT_scaled_size = DCTSIZE; - } - /* In selecting the actual DCT scaling for each component, we try to - * scale up the chroma components via IDCT scaling rather than upsampling. - * This saves time if the upsampler gets to use 1:1 scaling. - * Note this code assumes that the supported DCT scalings are powers of 2. - */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - int ssize = cinfo->min_DCT_scaled_size; - while (ssize < DCTSIZE && - (compptr->h_samp_factor * ssize * 2 <= - cinfo->max_h_samp_factor * cinfo->min_DCT_scaled_size) && - (compptr->v_samp_factor * ssize * 2 <= - cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size)) { - ssize = ssize * 2; - } - compptr->DCT_scaled_size = ssize; - } - - /* Recompute downsampled dimensions of components; - * application needs to know these if using raw downsampled data. - */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Size in samples, after IDCT scaling */ - compptr->downsampled_width = (JDIMENSION) - jdiv_round_up((long) cinfo->image_width * - (long) (compptr->h_samp_factor * compptr->DCT_scaled_size), - (long) (cinfo->max_h_samp_factor * DCTSIZE)); - compptr->downsampled_height = (JDIMENSION) - jdiv_round_up((long) cinfo->image_height * - (long) (compptr->v_samp_factor * compptr->DCT_scaled_size), - (long) (cinfo->max_v_samp_factor * DCTSIZE)); - } - -#else /* !IDCT_SCALING_SUPPORTED */ - - /* Hardwire it to "no scaling" */ - cinfo->output_width = cinfo->image_width; - cinfo->output_height = cinfo->image_height; - /* jdinput.c has already initialized DCT_scaled_size to DCTSIZE, - * and has computed unscaled downsampled_width and downsampled_height. - */ - -#endif /* IDCT_SCALING_SUPPORTED */ - - /* Report number of components in selected colorspace. */ - /* Probably this should be in the color conversion module... */ - switch (cinfo->out_color_space) { - case JCS_GRAYSCALE: - cinfo->out_color_components = 1; - break; - case JCS_RGB: -#if RGB_PIXELSIZE != 3 - cinfo->out_color_components = RGB_PIXELSIZE; - break; -#endif /* else share code with YCbCr */ -#ifdef ANDROID_RGB - case JCS_RGB_565: -#endif - case JCS_YCbCr: - cinfo->out_color_components = 3; - break; - case JCS_CMYK: - case JCS_YCCK: -#ifdef ANDROID_RGB - case JCS_RGBA_8888: -#endif - cinfo->out_color_components = 4; - break; - default: /* else must be same colorspace as in file */ - cinfo->out_color_components = cinfo->num_components; - break; - } - cinfo->output_components = (cinfo->quantize_colors ? 1 : - cinfo->out_color_components); - - /* See if upsampler will want to emit more than one row at a time */ - if (use_merged_upsample(cinfo)) - cinfo->rec_outbuf_height = cinfo->max_v_samp_factor; - else - cinfo->rec_outbuf_height = 1; -} - - -/* - * Several decompression processes need to range-limit values to the range - * 0..MAXJSAMPLE; the input value may fall somewhat outside this range - * due to noise introduced by quantization, roundoff error, etc. These - * processes are inner loops and need to be as fast as possible. On most - * machines, particularly CPUs with pipelines or instruction prefetch, - * a (subscript-check-less) C table lookup - * x = sample_range_limit[x]; - * is faster than explicit tests - * if (x < 0) x = 0; - * else if (x > MAXJSAMPLE) x = MAXJSAMPLE; - * These processes all use a common table prepared by the routine below. - * - * For most steps we can mathematically guarantee that the initial value - * of x is within MAXJSAMPLE+1 of the legal range, so a table running from - * -(MAXJSAMPLE+1) to 2*MAXJSAMPLE+1 is sufficient. But for the initial - * limiting step (just after the IDCT), a wildly out-of-range value is - * possible if the input data is corrupt. To avoid any chance of indexing - * off the end of memory and getting a bad-pointer trap, we perform the - * post-IDCT limiting thus: - * x = range_limit[x & MASK]; - * where MASK is 2 bits wider than legal sample data, ie 10 bits for 8-bit - * samples. Under normal circumstances this is more than enough range and - * a correct output will be generated; with bogus input data the mask will - * cause wraparound, and we will safely generate a bogus-but-in-range output. - * For the post-IDCT step, we want to convert the data from signed to unsigned - * representation by adding CENTERJSAMPLE at the same time that we limit it. - * So the post-IDCT limiting table ends up looking like this: - * CENTERJSAMPLE,CENTERJSAMPLE+1,...,MAXJSAMPLE, - * MAXJSAMPLE (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times), - * 0 (repeat 2*(MAXJSAMPLE+1)-CENTERJSAMPLE times), - * 0,1,...,CENTERJSAMPLE-1 - * Negative inputs select values from the upper half of the table after - * masking. - * - * We can save some space by overlapping the start of the post-IDCT table - * with the simpler range limiting table. The post-IDCT table begins at - * sample_range_limit + CENTERJSAMPLE. - * - * Note that the table is allocated in near data space on PCs; it's small - * enough and used often enough to justify this. - */ - -LOCAL(void) -prepare_range_limit_table (j_decompress_ptr cinfo) -/* Allocate and fill in the sample_range_limit table */ -{ - JSAMPLE * table; - int i; - - table = (JSAMPLE *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (5 * (MAXJSAMPLE+1) + CENTERJSAMPLE) * SIZEOF(JSAMPLE)); - table += (MAXJSAMPLE+1); /* allow negative subscripts of simple table */ - cinfo->sample_range_limit = table; - /* First segment of "simple" table: limit[x] = 0 for x < 0 */ - MEMZERO(table - (MAXJSAMPLE+1), (MAXJSAMPLE+1) * SIZEOF(JSAMPLE)); - /* Main part of "simple" table: limit[x] = x */ - for (i = 0; i <= MAXJSAMPLE; i++) - table[i] = (JSAMPLE) i; - table += CENTERJSAMPLE; /* Point to where post-IDCT table starts */ - /* End of simple table, rest of first half of post-IDCT table */ - for (i = CENTERJSAMPLE; i < 2*(MAXJSAMPLE+1); i++) - table[i] = MAXJSAMPLE; - /* Second half of post-IDCT table */ - MEMZERO(table + (2 * (MAXJSAMPLE+1)), - (2 * (MAXJSAMPLE+1) - CENTERJSAMPLE) * SIZEOF(JSAMPLE)); - MEMCOPY(table + (4 * (MAXJSAMPLE+1) - CENTERJSAMPLE), - cinfo->sample_range_limit, CENTERJSAMPLE * SIZEOF(JSAMPLE)); -} - - -/* - * Master selection of decompression modules. - * This is done once at jpeg_start_decompress time. We determine - * which modules will be used and give them appropriate initialization calls. - * We also initialize the decompressor input side to begin consuming data. - * - * Since jpeg_read_header has finished, we know what is in the SOF - * and (first) SOS markers. We also have all the application parameter - * settings. - */ - -LOCAL(void) -master_selection (j_decompress_ptr cinfo) -{ - my_master_ptr master = (my_master_ptr) cinfo->master; - boolean use_c_buffer; - long samplesperrow; - JDIMENSION jd_samplesperrow; - - /* Initialize dimensions and other stuff */ - jpeg_calc_output_dimensions(cinfo); - prepare_range_limit_table(cinfo); - - /* Width of an output scanline must be representable as JDIMENSION. */ - samplesperrow = (long) cinfo->output_width * (long) cinfo->out_color_components; - jd_samplesperrow = (JDIMENSION) samplesperrow; - if ((long) jd_samplesperrow != samplesperrow) - ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); - - /* Initialize my private state */ - master->pass_number = 0; - master->using_merged_upsample = use_merged_upsample(cinfo); - - /* Color quantizer selection */ - master->quantizer_1pass = NULL; - master->quantizer_2pass = NULL; - /* No mode changes if not using buffered-image mode. */ - if (! cinfo->quantize_colors || ! cinfo->buffered_image) { - cinfo->enable_1pass_quant = FALSE; - cinfo->enable_external_quant = FALSE; - cinfo->enable_2pass_quant = FALSE; - } - if (cinfo->quantize_colors) { - if (cinfo->raw_data_out) - ERREXIT(cinfo, JERR_NOTIMPL); - /* 2-pass quantizer only works in 3-component color space. */ - if (cinfo->out_color_components != 3) { - cinfo->enable_1pass_quant = TRUE; - cinfo->enable_external_quant = FALSE; - cinfo->enable_2pass_quant = FALSE; - cinfo->colormap = NULL; - } else if (cinfo->colormap != NULL) { - cinfo->enable_external_quant = TRUE; - } else if (cinfo->two_pass_quantize) { - cinfo->enable_2pass_quant = TRUE; - } else { - cinfo->enable_1pass_quant = TRUE; - } - - if (cinfo->enable_1pass_quant) { -#ifdef QUANT_1PASS_SUPPORTED - jinit_1pass_quantizer(cinfo); - master->quantizer_1pass = cinfo->cquantize; -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } - - /* We use the 2-pass code to map to external colormaps. */ - if (cinfo->enable_2pass_quant || cinfo->enable_external_quant) { -#ifdef QUANT_2PASS_SUPPORTED - jinit_2pass_quantizer(cinfo); - master->quantizer_2pass = cinfo->cquantize; -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } - /* If both quantizers are initialized, the 2-pass one is left active; - * this is necessary for starting with quantization to an external map. - */ - } - - /* Post-processing: in particular, color conversion first */ - if (! cinfo->raw_data_out) { - if (master->using_merged_upsample) { -#ifdef UPSAMPLE_MERGING_SUPPORTED - jinit_merged_upsampler(cinfo); /* does color conversion too */ -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else { - jinit_color_deconverter(cinfo); - jinit_upsampler(cinfo); - } - jinit_d_post_controller(cinfo, cinfo->enable_2pass_quant); - } - /* Inverse DCT */ - jinit_inverse_dct(cinfo); - /* Entropy decoding: either Huffman or arithmetic coding. */ - if (cinfo->arith_code) { - ERREXIT(cinfo, JERR_ARITH_NOTIMPL); - } else { - if (cinfo->progressive_mode) { -#ifdef D_PROGRESSIVE_SUPPORTED - jinit_phuff_decoder(cinfo); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else - jinit_huff_decoder(cinfo); - } - - /* Initialize principal buffer controllers. */ - use_c_buffer = cinfo->inputctl->has_multiple_scans || cinfo->buffered_image; - jinit_d_coef_controller(cinfo, use_c_buffer); - - if (! cinfo->raw_data_out) - jinit_d_main_controller(cinfo, FALSE /* never need full buffer here */); - - /* We can now tell the memory manager to allocate virtual arrays. */ - (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); - - /* Initialize input side of decompressor to consume first scan. */ - (*cinfo->inputctl->start_input_pass) (cinfo); - -#ifdef D_MULTISCAN_FILES_SUPPORTED - /* If jpeg_start_decompress will read the whole file, initialize - * progress monitoring appropriately. The input step is counted - * as one pass. - */ - if (cinfo->progress != NULL && ! cinfo->buffered_image && - cinfo->inputctl->has_multiple_scans) { - int nscans; - /* Estimate number of scans to set pass_limit. */ - if (cinfo->progressive_mode) { - /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */ - nscans = 2 + 3 * cinfo->num_components; - } else { - /* For a nonprogressive multiscan file, estimate 1 scan per component. */ - nscans = cinfo->num_components; - } - cinfo->progress->pass_counter = 0L; - cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans; - cinfo->progress->completed_passes = 0; - cinfo->progress->total_passes = (cinfo->enable_2pass_quant ? 3 : 2); - /* Count the input pass as done */ - master->pass_number++; - } -#endif /* D_MULTISCAN_FILES_SUPPORTED */ -} - - -/* - * Per-pass setup. - * This is called at the beginning of each output pass. We determine which - * modules will be active during this pass and give them appropriate - * start_pass calls. We also set is_dummy_pass to indicate whether this - * is a "real" output pass or a dummy pass for color quantization. - * (In the latter case, jdapistd.c will crank the pass to completion.) - */ - -METHODDEF(void) -prepare_for_output_pass (j_decompress_ptr cinfo) -{ - my_master_ptr master = (my_master_ptr) cinfo->master; - - if (master->pub.is_dummy_pass) { -#ifdef QUANT_2PASS_SUPPORTED - /* Final pass of 2-pass quantization */ - master->pub.is_dummy_pass = FALSE; - (*cinfo->cquantize->start_pass) (cinfo, FALSE); - (*cinfo->post->start_pass) (cinfo, JBUF_CRANK_DEST); - (*cinfo->main->start_pass) (cinfo, JBUF_CRANK_DEST); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif /* QUANT_2PASS_SUPPORTED */ - } else { - if (cinfo->quantize_colors && cinfo->colormap == NULL) { - /* Select new quantization method */ - if (cinfo->two_pass_quantize && cinfo->enable_2pass_quant) { - cinfo->cquantize = master->quantizer_2pass; - master->pub.is_dummy_pass = TRUE; - } else if (cinfo->enable_1pass_quant) { - cinfo->cquantize = master->quantizer_1pass; - } else { - ERREXIT(cinfo, JERR_MODE_CHANGE); - } - } - (*cinfo->idct->start_pass) (cinfo); - (*cinfo->coef->start_output_pass) (cinfo); - if (! cinfo->raw_data_out) { - if (! master->using_merged_upsample) - (*cinfo->cconvert->start_pass) (cinfo); - (*cinfo->upsample->start_pass) (cinfo); - if (cinfo->quantize_colors) - (*cinfo->cquantize->start_pass) (cinfo, master->pub.is_dummy_pass); - (*cinfo->post->start_pass) (cinfo, - (master->pub.is_dummy_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU)); - (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU); - } - } - - /* Set up progress monitor's pass info if present */ - if (cinfo->progress != NULL) { - cinfo->progress->completed_passes = master->pass_number; - cinfo->progress->total_passes = master->pass_number + - (master->pub.is_dummy_pass ? 2 : 1); - /* In buffered-image mode, we assume one more output pass if EOI not - * yet reached, but no more passes if EOI has been reached. - */ - if (cinfo->buffered_image && ! cinfo->inputctl->eoi_reached) { - cinfo->progress->total_passes += (cinfo->enable_2pass_quant ? 2 : 1); - } - } -} - - -/* - * Finish up at end of an output pass. - */ - -METHODDEF(void) -finish_output_pass (j_decompress_ptr cinfo) -{ - my_master_ptr master = (my_master_ptr) cinfo->master; - - if (cinfo->quantize_colors) - (*cinfo->cquantize->finish_pass) (cinfo); - master->pass_number++; -} - - -#ifdef D_MULTISCAN_FILES_SUPPORTED - -/* - * Switch to a new external colormap between output passes. - */ - -GLOBAL(void) -jpeg_new_colormap (j_decompress_ptr cinfo) -{ - my_master_ptr master = (my_master_ptr) cinfo->master; - - /* Prevent application from calling me at wrong times */ - if (cinfo->global_state != DSTATE_BUFIMAGE) - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - - if (cinfo->quantize_colors && cinfo->enable_external_quant && - cinfo->colormap != NULL) { - /* Select 2-pass quantizer for external colormap use */ - cinfo->cquantize = master->quantizer_2pass; - /* Notify quantizer of colormap change */ - (*cinfo->cquantize->new_color_map) (cinfo); - master->pub.is_dummy_pass = FALSE; /* just in case */ - } else - ERREXIT(cinfo, JERR_MODE_CHANGE); -} - -#endif /* D_MULTISCAN_FILES_SUPPORTED */ - - -/* - * Initialize master decompression control and select active modules. - * This is performed at the start of jpeg_start_decompress. - */ - -GLOBAL(void) -jinit_master_decompress (j_decompress_ptr cinfo) -{ - my_master_ptr master; - - master = (my_master_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_decomp_master)); - cinfo->master = (struct jpeg_decomp_master *) master; - master->pub.prepare_for_output_pass = prepare_for_output_pass; - master->pub.finish_output_pass = finish_output_pass; - - master->pub.is_dummy_pass = FALSE; - - master_selection(cinfo); -} diff --git a/project/jni/jpeg/jdmerge.c b/project/jni/jpeg/jdmerge.c deleted file mode 100644 index 77f33083a..000000000 --- a/project/jni/jpeg/jdmerge.c +++ /dev/null @@ -1,757 +0,0 @@ -/* - * jdmerge.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains code for merged upsampling/color conversion. - * - * This file combines functions from jdsample.c and jdcolor.c; - * read those files first to understand what's going on. - * - * When the chroma components are to be upsampled by simple replication - * (ie, box filtering), we can save some work in color conversion by - * calculating all the output pixels corresponding to a pair of chroma - * samples at one time. In the conversion equations - * R = Y + K1 * Cr - * G = Y + K2 * Cb + K3 * Cr - * B = Y + K4 * Cb - * only the Y term varies among the group of pixels corresponding to a pair - * of chroma samples, so the rest of the terms can be calculated just once. - * At typical sampling ratios, this eliminates half or three-quarters of the - * multiplications needed for color conversion. - * - * This file currently provides implementations for the following cases: - * YCbCr => RGB color conversion only. - * Sampling ratios of 2h1v or 2h2v. - * No scaling needed at upsample time. - * Corner-aligned (non-CCIR601) sampling alignment. - * Other special cases could be added, but in most applications these are - * the only common cases. (For uncommon cases we fall back on the more - * general code in jdsample.c and jdcolor.c.) - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - -#ifdef UPSAMPLE_MERGING_SUPPORTED - -#ifdef ANDROID_RGB - -/* Declarations for ordered dithering. - * - * We use 4x4 ordered dither array packed into 32 bits. This array is - * sufficent for dithering RGB_888 to RGB_565. - */ - -#define DITHER_MASK 0x3 -#define DITHER_ROTATE(x) (((x)<<24) | (((x)>>8)&0x00FFFFFF)) -static const INT32 dither_matrix[4] = { - 0x0008020A, - 0x0C040E06, - 0x030B0109, - 0x0F070D05 -}; - -#endif - -/* Private subobject */ - -typedef struct { - struct jpeg_upsampler pub; /* public fields */ - - /* Pointer to routine to do actual upsampling/conversion of one row group */ - JMETHOD(void, upmethod, (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf)); - - /* Private state for YCC->RGB conversion */ - int * Cr_r_tab; /* => table for Cr to R conversion */ - int * Cb_b_tab; /* => table for Cb to B conversion */ - INT32 * Cr_g_tab; /* => table for Cr to G conversion */ - INT32 * Cb_g_tab; /* => table for Cb to G conversion */ - - /* For 2:1 vertical sampling, we produce two output rows at a time. - * We need a "spare" row buffer to hold the second output row if the - * application provides just a one-row buffer; we also use the spare - * to discard the dummy last row if the image height is odd. - */ - JSAMPROW spare_row; - boolean spare_full; /* T if spare buffer is occupied */ - - JDIMENSION out_row_width; /* samples per output row */ - JDIMENSION rows_to_go; /* counts rows remaining in image */ -} my_upsampler; - -typedef my_upsampler * my_upsample_ptr; - -#define SCALEBITS 16 /* speediest right-shift on some machines */ -#define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) -#define FIX(x) ((INT32) ((x) * (1L<RGB colorspace conversion. - * This is taken directly from jdcolor.c; see that file for more info. - */ - -LOCAL(void) -build_ycc_rgb_table (j_decompress_ptr cinfo) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - int i; - INT32 x; - SHIFT_TEMPS - - upsample->Cr_r_tab = (int *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(int)); - upsample->Cb_b_tab = (int *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(int)); - upsample->Cr_g_tab = (INT32 *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(INT32)); - upsample->Cb_g_tab = (INT32 *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(INT32)); - - for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { - /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ - /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ - /* Cr=>R value is nearest int to 1.40200 * x */ - upsample->Cr_r_tab[i] = (int) - RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); - /* Cb=>B value is nearest int to 1.77200 * x */ - upsample->Cb_b_tab[i] = (int) - RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); - /* Cr=>G value is scaled-up -0.71414 * x */ - upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x; - /* Cb=>G value is scaled-up -0.34414 * x */ - /* We also add in ONE_HALF so that need not do it in inner loop */ - upsample->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF; - } -} - - -/* - * Initialize for an upsampling pass. - */ - -METHODDEF(void) -start_pass_merged_upsample (j_decompress_ptr cinfo) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - - /* Mark the spare buffer empty */ - upsample->spare_full = FALSE; - /* Initialize total-height counter for detecting bottom of image */ - upsample->rows_to_go = cinfo->output_height; -} - - -/* - * Control routine to do upsampling (and color conversion). - * - * The control routine just handles the row buffering considerations. - */ - -METHODDEF(void) -merged_2v_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -/* 2:1 vertical sampling case: may need a spare row. */ -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - JSAMPROW work_ptrs[2]; - JDIMENSION num_rows; /* number of rows returned to caller */ - - if (upsample->spare_full) { - /* If we have a spare row saved from a previous cycle, just return it. */ - JDIMENSION size = upsample->out_row_width; -#ifdef ANDROID_RGB - if (cinfo->out_color_space == JCS_RGB_565) - size = cinfo->output_width*2; -#endif - jcopy_sample_rows(& upsample->spare_row, 0, output_buf + *out_row_ctr, 0, - 1, size); - - num_rows = 1; - upsample->spare_full = FALSE; - } else { - /* Figure number of rows to return to caller. */ - num_rows = 2; - /* Not more than the distance to the end of the image. */ - if (num_rows > upsample->rows_to_go) - num_rows = upsample->rows_to_go; - /* And not more than what the client can accept: */ - out_rows_avail -= *out_row_ctr; - if (num_rows > out_rows_avail) - num_rows = out_rows_avail; - /* Create output pointer array for upsampler. */ - work_ptrs[0] = output_buf[*out_row_ctr]; - if (num_rows > 1) { - work_ptrs[1] = output_buf[*out_row_ctr + 1]; - } else { - work_ptrs[1] = upsample->spare_row; - upsample->spare_full = TRUE; - } - /* Now do the upsampling. */ - (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, work_ptrs); - } - - /* Adjust counts */ - *out_row_ctr += num_rows; - upsample->rows_to_go -= num_rows; - /* When the buffer is emptied, declare this input row group consumed */ - if (! upsample->spare_full) - (*in_row_group_ctr)++; -} - - -METHODDEF(void) -merged_1v_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -/* 1:1 vertical sampling case: much easier, never need a spare row. */ -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - - /* Just do the upsampling. */ - (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, - output_buf + *out_row_ctr); - /* Adjust counts */ - (*out_row_ctr)++; - (*in_row_group_ctr)++; -} - - -/* - * These are the routines invoked by the control routines to do - * the actual upsampling/conversion. One row group is processed per call. - * - * Note: since we may be writing directly into application-supplied buffers, - * we have to be honest about the output width; we can't assume the buffer - * has been rounded up to an even width. - */ - - -/* - * Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical. - */ - -METHODDEF(void) -h2v1_merged_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - register int y, cred, cgreen, cblue; - int cb, cr; - register JSAMPROW outptr; - JSAMPROW inptr0, inptr1, inptr2; - JDIMENSION col; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - int * Crrtab = upsample->Cr_r_tab; - int * Cbbtab = upsample->Cb_b_tab; - INT32 * Crgtab = upsample->Cr_g_tab; - INT32 * Cbgtab = upsample->Cb_g_tab; - SHIFT_TEMPS - - inptr0 = input_buf[0][in_row_group_ctr]; - inptr1 = input_buf[1][in_row_group_ctr]; - inptr2 = input_buf[2][in_row_group_ctr]; - outptr = output_buf[0]; - /* Loop for each pair of output pixels */ - for (col = cinfo->output_width >> 1; col > 0; col--) { - /* Do the chroma part of the calculation */ - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - /* Fetch 2 Y values and emit 2 pixels */ - y = GETJSAMPLE(*inptr0++); - outptr[RGB_RED] = range_limit[y + cred]; - outptr[RGB_GREEN] = range_limit[y + cgreen]; - outptr[RGB_BLUE] = range_limit[y + cblue]; - outptr += RGB_PIXELSIZE; - y = GETJSAMPLE(*inptr0++); - outptr[RGB_RED] = range_limit[y + cred]; - outptr[RGB_GREEN] = range_limit[y + cgreen]; - outptr[RGB_BLUE] = range_limit[y + cblue]; - outptr += RGB_PIXELSIZE; - } - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - y = GETJSAMPLE(*inptr0); - outptr[RGB_RED] = range_limit[y + cred]; - outptr[RGB_GREEN] = range_limit[y + cgreen]; - outptr[RGB_BLUE] = range_limit[y + cblue]; - } -} - - -#ifdef ANDROID_RGB -METHODDEF(void) -h2v1_merged_upsample_565 (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - register int y, cred, cgreen, cblue; - int cb, cr; - register JSAMPROW outptr; - JSAMPROW inptr0, inptr1, inptr2; - JDIMENSION col; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - int * Crrtab = upsample->Cr_r_tab; - int * Cbbtab = upsample->Cb_b_tab; - INT32 * Crgtab = upsample->Cr_g_tab; - INT32 * Cbgtab = upsample->Cb_g_tab; - unsigned int r, g, b; - INT32 rgb; - SHIFT_TEMPS - - inptr0 = input_buf[0][in_row_group_ctr]; - inptr1 = input_buf[1][in_row_group_ctr]; - inptr2 = input_buf[2][in_row_group_ctr]; - outptr = output_buf[0]; - /* Loop for each pair of output pixels */ - for (col = cinfo->output_width >> 1; col > 0; col--) { - /* Do the chroma part of the calculation */ - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - /* Fetch 2 Y values and emit 2 pixels */ - y = GETJSAMPLE(*inptr0++); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr0++); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_PIXELS(outptr, rgb); - outptr += 4; - } - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - y = GETJSAMPLE(*inptr0); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - } -} - - -METHODDEF(void) -h2v1_merged_upsample_565D (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - register int y, cred, cgreen, cblue; - int cb, cr; - register JSAMPROW outptr; - JSAMPROW inptr0, inptr1, inptr2; - JDIMENSION col; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - int * Crrtab = upsample->Cr_r_tab; - int * Cbbtab = upsample->Cb_b_tab; - INT32 * Crgtab = upsample->Cr_g_tab; - INT32 * Cbgtab = upsample->Cb_g_tab; - JDIMENSION col_index = 0; - INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; - unsigned int r, g, b; - INT32 rgb; - SHIFT_TEMPS - - inptr0 = input_buf[0][in_row_group_ctr]; - inptr1 = input_buf[1][in_row_group_ctr]; - inptr2 = input_buf[2][in_row_group_ctr]; - outptr = output_buf[0]; - /* Loop for each pair of output pixels */ - for (col = cinfo->output_width >> 1; col > 0; col--) { - /* Do the chroma part of the calculation */ - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - /* Fetch 2 Y values and emit 2 pixels */ - y = GETJSAMPLE(*inptr0++); - r = range_limit[DITHER_565_R(y + cred, d0)]; - g = range_limit[DITHER_565_G(y + cgreen, d0)]; - b = range_limit[DITHER_565_B(y + cblue, d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr0++); - r = range_limit[DITHER_565_R(y + cred, d0)]; - g = range_limit[DITHER_565_G(y + cgreen, d0)]; - b = range_limit[DITHER_565_B(y + cblue, d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_PIXELS(outptr, rgb); - outptr += 4; - } - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - y = GETJSAMPLE(*inptr0); - r = range_limit[DITHER_565_R(y + cred, d0)]; - g = range_limit[DITHER_565_G(y + cgreen, d0)]; - b = range_limit[DITHER_565_B(y + cblue, d0)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr = rgb; - } -} - - -#endif - -/* - * Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical. - */ - -METHODDEF(void) -h2v2_merged_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - register int y, cred, cgreen, cblue; - int cb, cr; - register JSAMPROW outptr0, outptr1; - JSAMPROW inptr00, inptr01, inptr1, inptr2; - JDIMENSION col; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - int * Crrtab = upsample->Cr_r_tab; - int * Cbbtab = upsample->Cb_b_tab; - INT32 * Crgtab = upsample->Cr_g_tab; - INT32 * Cbgtab = upsample->Cb_g_tab; - SHIFT_TEMPS - - inptr00 = input_buf[0][in_row_group_ctr*2]; - inptr01 = input_buf[0][in_row_group_ctr*2 + 1]; - inptr1 = input_buf[1][in_row_group_ctr]; - inptr2 = input_buf[2][in_row_group_ctr]; - outptr0 = output_buf[0]; - outptr1 = output_buf[1]; - /* Loop for each group of output pixels */ - for (col = cinfo->output_width >> 1; col > 0; col--) { - /* Do the chroma part of the calculation */ - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - /* Fetch 4 Y values and emit 4 pixels */ - y = GETJSAMPLE(*inptr00++); - outptr0[RGB_RED] = range_limit[y + cred]; - outptr0[RGB_GREEN] = range_limit[y + cgreen]; - outptr0[RGB_BLUE] = range_limit[y + cblue]; - outptr0 += RGB_PIXELSIZE; - y = GETJSAMPLE(*inptr00++); - outptr0[RGB_RED] = range_limit[y + cred]; - outptr0[RGB_GREEN] = range_limit[y + cgreen]; - outptr0[RGB_BLUE] = range_limit[y + cblue]; - outptr0 += RGB_PIXELSIZE; - y = GETJSAMPLE(*inptr01++); - outptr1[RGB_RED] = range_limit[y + cred]; - outptr1[RGB_GREEN] = range_limit[y + cgreen]; - outptr1[RGB_BLUE] = range_limit[y + cblue]; - outptr1 += RGB_PIXELSIZE; - y = GETJSAMPLE(*inptr01++); - outptr1[RGB_RED] = range_limit[y + cred]; - outptr1[RGB_GREEN] = range_limit[y + cgreen]; - outptr1[RGB_BLUE] = range_limit[y + cblue]; - outptr1 += RGB_PIXELSIZE; - } - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - y = GETJSAMPLE(*inptr00); - outptr0[RGB_RED] = range_limit[y + cred]; - outptr0[RGB_GREEN] = range_limit[y + cgreen]; - outptr0[RGB_BLUE] = range_limit[y + cblue]; - y = GETJSAMPLE(*inptr01); - outptr1[RGB_RED] = range_limit[y + cred]; - outptr1[RGB_GREEN] = range_limit[y + cgreen]; - outptr1[RGB_BLUE] = range_limit[y + cblue]; - } -} - - -#ifdef ANDROID_RGB - -METHODDEF(void) -h2v2_merged_upsample_565 (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - register int y, cred, cgreen, cblue; - int cb, cr; - register JSAMPROW outptr0, outptr1; - JSAMPROW inptr00, inptr01, inptr1, inptr2; - JDIMENSION col; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - int * Crrtab = upsample->Cr_r_tab; - int * Cbbtab = upsample->Cb_b_tab; - INT32 * Crgtab = upsample->Cr_g_tab; - INT32 * Cbgtab = upsample->Cb_g_tab; - unsigned int r, g, b; - INT32 rgb; - SHIFT_TEMPS - - inptr00 = input_buf[0][in_row_group_ctr*2]; - inptr01 = input_buf[0][in_row_group_ctr*2 + 1]; - inptr1 = input_buf[1][in_row_group_ctr]; - inptr2 = input_buf[2][in_row_group_ctr]; - outptr0 = output_buf[0]; - outptr1 = output_buf[1]; - /* Loop for each group of output pixels */ - for (col = cinfo->output_width >> 1; col > 0; col--) { - /* Do the chroma part of the calculation */ - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - /* Fetch 4 Y values and emit 4 pixels */ - y = GETJSAMPLE(*inptr00++); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr00++); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_PIXELS(outptr0, rgb); - outptr0 += 4; - y = GETJSAMPLE(*inptr01++); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr01++); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_PIXELS(outptr1, rgb); - outptr1 += 4; - } - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - y = GETJSAMPLE(*inptr00); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr0 = rgb; - y = GETJSAMPLE(*inptr01); - r = range_limit[y + cred]; - g = range_limit[y + cgreen]; - b = range_limit[y + cblue]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr1 = rgb; - } -} - - - -METHODDEF(void) -h2v2_merged_upsample_565D (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - register int y, cred, cgreen, cblue; - int cb, cr; - register JSAMPROW outptr0, outptr1; - JSAMPROW inptr00, inptr01, inptr1, inptr2; - JDIMENSION col; - /* copy these pointers into registers if possible */ - register JSAMPLE * range_limit = cinfo->sample_range_limit; - int * Crrtab = upsample->Cr_r_tab; - int * Cbbtab = upsample->Cb_b_tab; - INT32 * Crgtab = upsample->Cr_g_tab; - INT32 * Cbgtab = upsample->Cb_g_tab; - JDIMENSION col_index = 0; - INT32 d0 = dither_matrix[cinfo->output_scanline & DITHER_MASK]; - INT32 d1 = dither_matrix[(cinfo->output_scanline+1) & DITHER_MASK]; - unsigned int r, g, b; - INT32 rgb; - SHIFT_TEMPS - - inptr00 = input_buf[0][in_row_group_ctr*2]; - inptr01 = input_buf[0][in_row_group_ctr*2 + 1]; - inptr1 = input_buf[1][in_row_group_ctr]; - inptr2 = input_buf[2][in_row_group_ctr]; - outptr0 = output_buf[0]; - outptr1 = output_buf[1]; - /* Loop for each group of output pixels */ - for (col = cinfo->output_width >> 1; col > 0; col--) { - - /* Do the chroma part of the calculation */ - cb = GETJSAMPLE(*inptr1++); - cr = GETJSAMPLE(*inptr2++); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - /* Fetch 4 Y values and emit 4 pixels */ - y = GETJSAMPLE(*inptr00++); - r = range_limit[DITHER_565_R(y + cred, d0)]; - g = range_limit[DITHER_565_G(y + cgreen, d0)]; - b = range_limit[DITHER_565_B(y + cblue, d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr00++); - r = range_limit[DITHER_565_R(y + cred, d1)]; - g = range_limit[DITHER_565_G(y + cgreen, d1)]; - b = range_limit[DITHER_565_B(y + cblue, d1)]; - d1 = DITHER_ROTATE(d1); - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_PIXELS(outptr0, rgb); - outptr0 += 4; - y = GETJSAMPLE(*inptr01++); - r = range_limit[DITHER_565_R(y + cred, d0)]; - g = range_limit[DITHER_565_G(y + cgreen, d0)]; - b = range_limit[DITHER_565_B(y + cblue, d0)]; - d0 = DITHER_ROTATE(d0); - rgb = PACK_SHORT_565(r,g,b); - y = GETJSAMPLE(*inptr01++); - r = range_limit[DITHER_565_R(y + cred, d1)]; - g = range_limit[DITHER_565_G(y + cgreen, d1)]; - b = range_limit[DITHER_565_B(y + cblue, d1)]; - d1 = DITHER_ROTATE(d1); - rgb = PACK_TWO_PIXELS(rgb, PACK_SHORT_565(r,g,b)); - WRITE_TWO_PIXELS(outptr1, rgb); - outptr1 += 4; - } - /* If image width is odd, do the last output column separately */ - if (cinfo->output_width & 1) { - cb = GETJSAMPLE(*inptr1); - cr = GETJSAMPLE(*inptr2); - cred = Crrtab[cr]; - cgreen = (int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS); - cblue = Cbbtab[cb]; - y = GETJSAMPLE(*inptr00); - r = range_limit[DITHER_565_R(y + cred, d0)]; - g = range_limit[DITHER_565_G(y + cgreen, d0)]; - b = range_limit[DITHER_565_B(y + cblue, d0)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr0 = rgb; - y = GETJSAMPLE(*inptr01); - r = range_limit[DITHER_565_R(y + cred, d1)]; - g = range_limit[DITHER_565_G(y + cgreen, d1)]; - b = range_limit[DITHER_565_B(y + cblue, d1)]; - rgb = PACK_SHORT_565(r,g,b); - *(INT16*)outptr1 = rgb; - } -} - -#endif - -/* - * Module initialization routine for merged upsampling/color conversion. - * - * NB: this is called under the conditions determined by use_merged_upsample() - * in jdmaster.c. That routine MUST correspond to the actual capabilities - * of this module; no safety checks are made here. - */ - -GLOBAL(void) -jinit_merged_upsampler (j_decompress_ptr cinfo) -{ - my_upsample_ptr upsample; - - upsample = (my_upsample_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_upsampler)); - cinfo->upsample = (struct jpeg_upsampler *) upsample; - upsample->pub.start_pass = start_pass_merged_upsample; - upsample->pub.need_context_rows = FALSE; - - upsample->out_row_width = cinfo->output_width * cinfo->out_color_components; - - if (cinfo->max_v_samp_factor == 2) { - upsample->pub.upsample = merged_2v_upsample; - upsample->upmethod = h2v2_merged_upsample; -#ifdef ANDROID_RGB - if (cinfo->out_color_space == JCS_RGB_565) { - if (cinfo->dither_mode == JDITHER_NONE) { - upsample->upmethod = h2v2_merged_upsample_565; - } else { - upsample->upmethod = h2v2_merged_upsample_565D; - } - } -#endif - /* Allocate a spare row buffer */ - upsample->spare_row = (JSAMPROW) - (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (size_t) (upsample->out_row_width * SIZEOF(JSAMPLE))); - } else { - upsample->pub.upsample = merged_1v_upsample; - upsample->upmethod = h2v1_merged_upsample; -#ifdef ANDROID_RGB - if (cinfo->out_color_space == JCS_RGB_565) { - if (cinfo->dither_mode == JDITHER_NONE) { - upsample->upmethod = h2v1_merged_upsample_565; - } else { - upsample->upmethod = h2v1_merged_upsample_565D; - } - } -#endif - /* No spare row needed */ - upsample->spare_row = NULL; - } - - build_ycc_rgb_table(cinfo); -} - -#endif /* UPSAMPLE_MERGING_SUPPORTED */ diff --git a/project/jni/jpeg/jdphuff.c b/project/jni/jpeg/jdphuff.c deleted file mode 100644 index 226780994..000000000 --- a/project/jni/jpeg/jdphuff.c +++ /dev/null @@ -1,668 +0,0 @@ -/* - * jdphuff.c - * - * Copyright (C) 1995-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains Huffman entropy decoding routines for progressive JPEG. - * - * Much of the complexity here has to do with supporting input suspension. - * If the data source module demands suspension, we want to be able to back - * up to the start of the current MCU. To do this, we copy state variables - * into local working storage, and update them back to the permanent - * storage only upon successful completion of an MCU. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdhuff.h" /* Declarations shared with jdhuff.c */ - - -#ifdef D_PROGRESSIVE_SUPPORTED - -/* - * Expanded entropy decoder object for progressive Huffman decoding. - * - * The savable_state subrecord contains fields that change within an MCU, - * but must not be updated permanently until we complete the MCU. - */ - -typedef struct { - unsigned int EOBRUN; /* remaining EOBs in EOBRUN */ - int last_dc_val[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ -} savable_state; - -/* This macro is to work around compilers with missing or broken - * structure assignment. You'll need to fix this code if you have - * such a compiler and you change MAX_COMPS_IN_SCAN. - */ - -#ifndef NO_STRUCT_ASSIGN -#define ASSIGN_STATE(dest,src) ((dest) = (src)) -#else -#if MAX_COMPS_IN_SCAN == 4 -#define ASSIGN_STATE(dest,src) \ - ((dest).EOBRUN = (src).EOBRUN, \ - (dest).last_dc_val[0] = (src).last_dc_val[0], \ - (dest).last_dc_val[1] = (src).last_dc_val[1], \ - (dest).last_dc_val[2] = (src).last_dc_val[2], \ - (dest).last_dc_val[3] = (src).last_dc_val[3]) -#endif -#endif - - -typedef struct { - struct jpeg_entropy_decoder pub; /* public fields */ - - /* These fields are loaded into local variables at start of each MCU. - * In case of suspension, we exit WITHOUT updating them. - */ - bitread_perm_state bitstate; /* Bit buffer at start of MCU */ - savable_state saved; /* Other state at start of MCU */ - - /* These fields are NOT loaded into local working state. */ - unsigned int restarts_to_go; /* MCUs left in this restart interval */ - - /* Pointers to derived tables (these workspaces have image lifespan) */ - d_derived_tbl * derived_tbls[NUM_HUFF_TBLS]; - - d_derived_tbl * ac_derived_tbl; /* active table during an AC scan */ -} phuff_entropy_decoder; - -typedef phuff_entropy_decoder * phuff_entropy_ptr; - -/* Forward declarations */ -METHODDEF(boolean) decode_mcu_DC_first JPP((j_decompress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(boolean) decode_mcu_AC_first JPP((j_decompress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(boolean) decode_mcu_DC_refine JPP((j_decompress_ptr cinfo, - JBLOCKROW *MCU_data)); -METHODDEF(boolean) decode_mcu_AC_refine JPP((j_decompress_ptr cinfo, - JBLOCKROW *MCU_data)); - - -/* - * Initialize for a Huffman-compressed scan. - */ - -METHODDEF(void) -start_pass_phuff_decoder (j_decompress_ptr cinfo) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - boolean is_DC_band, bad; - int ci, coefi, tbl; - int *coef_bit_ptr; - jpeg_component_info * compptr; - - is_DC_band = (cinfo->Ss == 0); - - /* Validate scan parameters */ - bad = FALSE; - if (is_DC_band) { - if (cinfo->Se != 0) - bad = TRUE; - } else { - /* need not check Ss/Se < 0 since they came from unsigned bytes */ - if (cinfo->Ss > cinfo->Se || cinfo->Se >= DCTSIZE2) - bad = TRUE; - /* AC scans may have only one component */ - if (cinfo->comps_in_scan != 1) - bad = TRUE; - } - if (cinfo->Ah != 0) { - /* Successive approximation refinement scan: must have Al = Ah-1. */ - if (cinfo->Al != cinfo->Ah-1) - bad = TRUE; - } - if (cinfo->Al > 13) /* need not check for < 0 */ - bad = TRUE; - /* Arguably the maximum Al value should be less than 13 for 8-bit precision, - * but the spec doesn't say so, and we try to be liberal about what we - * accept. Note: large Al values could result in out-of-range DC - * coefficients during early scans, leading to bizarre displays due to - * overflows in the IDCT math. But we won't crash. - */ - if (bad) - ERREXIT4(cinfo, JERR_BAD_PROGRESSION, - cinfo->Ss, cinfo->Se, cinfo->Ah, cinfo->Al); - /* Update progression status, and verify that scan order is legal. - * Note that inter-scan inconsistencies are treated as warnings - * not fatal errors ... not clear if this is right way to behave. - */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - int cindex = cinfo->cur_comp_info[ci]->component_index; - coef_bit_ptr = & cinfo->coef_bits[cindex][0]; - if (!is_DC_band && coef_bit_ptr[0] < 0) /* AC without prior DC scan */ - WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, 0); - for (coefi = cinfo->Ss; coefi <= cinfo->Se; coefi++) { - int expected = (coef_bit_ptr[coefi] < 0) ? 0 : coef_bit_ptr[coefi]; - if (cinfo->Ah != expected) - WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, coefi); - coef_bit_ptr[coefi] = cinfo->Al; - } - } - - /* Select MCU decoding routine */ - if (cinfo->Ah == 0) { - if (is_DC_band) - entropy->pub.decode_mcu = decode_mcu_DC_first; - else - entropy->pub.decode_mcu = decode_mcu_AC_first; - } else { - if (is_DC_band) - entropy->pub.decode_mcu = decode_mcu_DC_refine; - else - entropy->pub.decode_mcu = decode_mcu_AC_refine; - } - - for (ci = 0; ci < cinfo->comps_in_scan; ci++) { - compptr = cinfo->cur_comp_info[ci]; - /* Make sure requested tables are present, and compute derived tables. - * We may build same derived table more than once, but it's not expensive. - */ - if (is_DC_band) { - if (cinfo->Ah == 0) { /* DC refinement needs no table */ - tbl = compptr->dc_tbl_no; - jpeg_make_d_derived_tbl(cinfo, TRUE, tbl, - & entropy->derived_tbls[tbl]); - } - } else { - tbl = compptr->ac_tbl_no; - jpeg_make_d_derived_tbl(cinfo, FALSE, tbl, - & entropy->derived_tbls[tbl]); - /* remember the single active table */ - entropy->ac_derived_tbl = entropy->derived_tbls[tbl]; - } - /* Initialize DC predictions to 0 */ - entropy->saved.last_dc_val[ci] = 0; - } - - /* Initialize bitread state variables */ - entropy->bitstate.bits_left = 0; - entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */ - entropy->pub.insufficient_data = FALSE; - - /* Initialize private state variables */ - entropy->saved.EOBRUN = 0; - - /* Initialize restart counter */ - entropy->restarts_to_go = cinfo->restart_interval; -} - - -/* - * Figure F.12: extend sign bit. - * On some machines, a shift and add will be faster than a table lookup. - */ - -#ifdef AVOID_TABLES - -#define HUFF_EXTEND(x,s) ((x) < (1<<((s)-1)) ? (x) + (((-1)<<(s)) + 1) : (x)) - -#else - -#define HUFF_EXTEND(x,s) ((x) < extend_test[s] ? (x) + extend_offset[s] : (x)) - -static const int extend_test[16] = /* entry n is 2**(n-1) */ - { 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080, - 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 }; - -static const int extend_offset[16] = /* entry n is (-1 << n) + 1 */ - { 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1, - ((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1, - ((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1, - ((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 }; - -#endif /* AVOID_TABLES */ - - -/* - * Check for a restart marker & resynchronize decoder. - * Returns FALSE if must suspend. - */ - -LOCAL(boolean) -process_restart (j_decompress_ptr cinfo) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - int ci; - - /* Throw away any unused bits remaining in bit buffer; */ - /* include any full bytes in next_marker's count of discarded bytes */ - cinfo->marker->discarded_bytes += entropy->bitstate.bits_left / 8; - entropy->bitstate.bits_left = 0; - - /* Advance past the RSTn marker */ - if (! (*cinfo->marker->read_restart_marker) (cinfo)) - return FALSE; - - /* Re-initialize DC predictions to 0 */ - for (ci = 0; ci < cinfo->comps_in_scan; ci++) - entropy->saved.last_dc_val[ci] = 0; - /* Re-init EOB run count, too */ - entropy->saved.EOBRUN = 0; - - /* Reset restart counter */ - entropy->restarts_to_go = cinfo->restart_interval; - - /* Reset out-of-data flag, unless read_restart_marker left us smack up - * against a marker. In that case we will end up treating the next data - * segment as empty, and we can avoid producing bogus output pixels by - * leaving the flag set. - */ - if (cinfo->unread_marker == 0) - entropy->pub.insufficient_data = FALSE; - - return TRUE; -} - - -/* - * Huffman MCU decoding. - * Each of these routines decodes and returns one MCU's worth of - * Huffman-compressed coefficients. - * The coefficients are reordered from zigzag order into natural array order, - * but are not dequantized. - * - * The i'th block of the MCU is stored into the block pointed to by - * MCU_data[i]. WE ASSUME THIS AREA IS INITIALLY ZEROED BY THE CALLER. - * - * We return FALSE if data source requested suspension. In that case no - * changes have been made to permanent state. (Exception: some output - * coefficients may already have been assigned. This is harmless for - * spectral selection, since we'll just re-assign them on the next call. - * Successive approximation AC refinement has to be more careful, however.) - */ - -/* - * MCU decoding for DC initial scan (either spectral selection, - * or first pass of successive approximation). - */ - -METHODDEF(boolean) -decode_mcu_DC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - int Al = cinfo->Al; - register int s, r; - int blkn, ci; - JBLOCKROW block; - BITREAD_STATE_VARS; - savable_state state; - d_derived_tbl * tbl; - jpeg_component_info * compptr; - - /* Process restart marker if needed; may have to suspend */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) - if (! process_restart(cinfo)) - return FALSE; - } - - /* If we've run out of data, just leave the MCU set to zeroes. - * This way, we return uniform gray for the remainder of the segment. - */ - if (! entropy->pub.insufficient_data) { - - /* Load up working state */ - BITREAD_LOAD_STATE(cinfo,entropy->bitstate); - ASSIGN_STATE(state, entropy->saved); - - /* Outer loop handles each block in the MCU */ - - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - block = MCU_data[blkn]; - ci = cinfo->MCU_membership[blkn]; - compptr = cinfo->cur_comp_info[ci]; - tbl = entropy->derived_tbls[compptr->dc_tbl_no]; - - /* Decode a single block's worth of coefficients */ - - /* Section F.2.2.1: decode the DC coefficient difference */ - HUFF_DECODE(s, br_state, tbl, return FALSE, label1); - if (s) { - CHECK_BIT_BUFFER(br_state, s, return FALSE); - r = GET_BITS(s); - s = HUFF_EXTEND(r, s); - } - - /* Convert DC difference to actual value, update last_dc_val */ - s += state.last_dc_val[ci]; - state.last_dc_val[ci] = s; - /* Scale and output the coefficient (assumes jpeg_natural_order[0]=0) */ - (*block)[0] = (JCOEF) (s << Al); - } - - /* Completed MCU, so update state */ - BITREAD_SAVE_STATE(cinfo,entropy->bitstate); - ASSIGN_STATE(entropy->saved, state); - } - - /* Account for restart interval (no-op if not using restarts) */ - entropy->restarts_to_go--; - - return TRUE; -} - - -/* - * MCU decoding for AC initial scan (either spectral selection, - * or first pass of successive approximation). - */ - -METHODDEF(boolean) -decode_mcu_AC_first (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - int Se = cinfo->Se; - int Al = cinfo->Al; - register int s, k, r; - unsigned int EOBRUN; - JBLOCKROW block; - BITREAD_STATE_VARS; - d_derived_tbl * tbl; - - /* Process restart marker if needed; may have to suspend */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) - if (! process_restart(cinfo)) - return FALSE; - } - - /* If we've run out of data, just leave the MCU set to zeroes. - * This way, we return uniform gray for the remainder of the segment. - */ - if (! entropy->pub.insufficient_data) { - - /* Load up working state. - * We can avoid loading/saving bitread state if in an EOB run. - */ - EOBRUN = entropy->saved.EOBRUN; /* only part of saved state we need */ - - /* There is always only one block per MCU */ - - if (EOBRUN > 0) /* if it's a band of zeroes... */ - EOBRUN--; /* ...process it now (we do nothing) */ - else { - BITREAD_LOAD_STATE(cinfo,entropy->bitstate); - block = MCU_data[0]; - tbl = entropy->ac_derived_tbl; - - for (k = cinfo->Ss; k <= Se; k++) { - HUFF_DECODE(s, br_state, tbl, return FALSE, label2); - r = s >> 4; - s &= 15; - if (s) { - k += r; - CHECK_BIT_BUFFER(br_state, s, return FALSE); - r = GET_BITS(s); - s = HUFF_EXTEND(r, s); - /* Scale and output coefficient in natural (dezigzagged) order */ - (*block)[jpeg_natural_order[k]] = (JCOEF) (s << Al); - } else { - if (r == 15) { /* ZRL */ - k += 15; /* skip 15 zeroes in band */ - } else { /* EOBr, run length is 2^r + appended bits */ - EOBRUN = 1 << r; - if (r) { /* EOBr, r > 0 */ - CHECK_BIT_BUFFER(br_state, r, return FALSE); - r = GET_BITS(r); - EOBRUN += r; - } - EOBRUN--; /* this band is processed at this moment */ - break; /* force end-of-band */ - } - } - } - - BITREAD_SAVE_STATE(cinfo,entropy->bitstate); - } - - /* Completed MCU, so update state */ - entropy->saved.EOBRUN = EOBRUN; /* only part of saved state we need */ - } - - /* Account for restart interval (no-op if not using restarts) */ - entropy->restarts_to_go--; - - return TRUE; -} - - -/* - * MCU decoding for DC successive approximation refinement scan. - * Note: we assume such scans can be multi-component, although the spec - * is not very clear on the point. - */ - -METHODDEF(boolean) -decode_mcu_DC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - int p1 = 1 << cinfo->Al; /* 1 in the bit position being coded */ - int blkn; - JBLOCKROW block; - BITREAD_STATE_VARS; - - /* Process restart marker if needed; may have to suspend */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) - if (! process_restart(cinfo)) - return FALSE; - } - - /* Not worth the cycles to check insufficient_data here, - * since we will not change the data anyway if we read zeroes. - */ - - /* Load up working state */ - BITREAD_LOAD_STATE(cinfo,entropy->bitstate); - - /* Outer loop handles each block in the MCU */ - - for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) { - block = MCU_data[blkn]; - - /* Encoded data is simply the next bit of the two's-complement DC value */ - CHECK_BIT_BUFFER(br_state, 1, return FALSE); - if (GET_BITS(1)) - (*block)[0] |= p1; - /* Note: since we use |=, repeating the assignment later is safe */ - } - - /* Completed MCU, so update state */ - BITREAD_SAVE_STATE(cinfo,entropy->bitstate); - - /* Account for restart interval (no-op if not using restarts) */ - entropy->restarts_to_go--; - - return TRUE; -} - - -/* - * MCU decoding for AC successive approximation refinement scan. - */ - -METHODDEF(boolean) -decode_mcu_AC_refine (j_decompress_ptr cinfo, JBLOCKROW *MCU_data) -{ - phuff_entropy_ptr entropy = (phuff_entropy_ptr) cinfo->entropy; - int Se = cinfo->Se; - int p1 = 1 << cinfo->Al; /* 1 in the bit position being coded */ - int m1 = (-1) << cinfo->Al; /* -1 in the bit position being coded */ - register int s, k, r; - unsigned int EOBRUN; - JBLOCKROW block; - JCOEFPTR thiscoef; - BITREAD_STATE_VARS; - d_derived_tbl * tbl; - int num_newnz; - int newnz_pos[DCTSIZE2]; - - /* Process restart marker if needed; may have to suspend */ - if (cinfo->restart_interval) { - if (entropy->restarts_to_go == 0) - if (! process_restart(cinfo)) - return FALSE; - } - - /* If we've run out of data, don't modify the MCU. - */ - if (! entropy->pub.insufficient_data) { - - /* Load up working state */ - BITREAD_LOAD_STATE(cinfo,entropy->bitstate); - EOBRUN = entropy->saved.EOBRUN; /* only part of saved state we need */ - - /* There is always only one block per MCU */ - block = MCU_data[0]; - tbl = entropy->ac_derived_tbl; - - /* If we are forced to suspend, we must undo the assignments to any newly - * nonzero coefficients in the block, because otherwise we'd get confused - * next time about which coefficients were already nonzero. - * But we need not undo addition of bits to already-nonzero coefficients; - * instead, we can test the current bit to see if we already did it. - */ - num_newnz = 0; - - /* initialize coefficient loop counter to start of band */ - k = cinfo->Ss; - - if (EOBRUN == 0) { - for (; k <= Se; k++) { - HUFF_DECODE(s, br_state, tbl, goto undoit, label3); - r = s >> 4; - s &= 15; - if (s) { - if (s != 1) /* size of new coef should always be 1 */ - WARNMS(cinfo, JWRN_HUFF_BAD_CODE); - CHECK_BIT_BUFFER(br_state, 1, goto undoit); - if (GET_BITS(1)) - s = p1; /* newly nonzero coef is positive */ - else - s = m1; /* newly nonzero coef is negative */ - } else { - if (r != 15) { - EOBRUN = 1 << r; /* EOBr, run length is 2^r + appended bits */ - if (r) { - CHECK_BIT_BUFFER(br_state, r, goto undoit); - r = GET_BITS(r); - EOBRUN += r; - } - break; /* rest of block is handled by EOB logic */ - } - /* note s = 0 for processing ZRL */ - } - /* Advance over already-nonzero coefs and r still-zero coefs, - * appending correction bits to the nonzeroes. A correction bit is 1 - * if the absolute value of the coefficient must be increased. - */ - do { - thiscoef = *block + jpeg_natural_order[k]; - if (*thiscoef != 0) { - CHECK_BIT_BUFFER(br_state, 1, goto undoit); - if (GET_BITS(1)) { - if ((*thiscoef & p1) == 0) { /* do nothing if already set it */ - if (*thiscoef >= 0) - *thiscoef += p1; - else - *thiscoef += m1; - } - } - } else { - if (--r < 0) - break; /* reached target zero coefficient */ - } - k++; - } while (k <= Se); - if (s) { - int pos = jpeg_natural_order[k]; - /* Output newly nonzero coefficient */ - (*block)[pos] = (JCOEF) s; - /* Remember its position in case we have to suspend */ - newnz_pos[num_newnz++] = pos; - } - } - } - - if (EOBRUN > 0) { - /* Scan any remaining coefficient positions after the end-of-band - * (the last newly nonzero coefficient, if any). Append a correction - * bit to each already-nonzero coefficient. A correction bit is 1 - * if the absolute value of the coefficient must be increased. - */ - for (; k <= Se; k++) { - thiscoef = *block + jpeg_natural_order[k]; - if (*thiscoef != 0) { - CHECK_BIT_BUFFER(br_state, 1, goto undoit); - if (GET_BITS(1)) { - if ((*thiscoef & p1) == 0) { /* do nothing if already changed it */ - if (*thiscoef >= 0) - *thiscoef += p1; - else - *thiscoef += m1; - } - } - } - } - /* Count one block completed in EOB run */ - EOBRUN--; - } - - /* Completed MCU, so update state */ - BITREAD_SAVE_STATE(cinfo,entropy->bitstate); - entropy->saved.EOBRUN = EOBRUN; /* only part of saved state we need */ - } - - /* Account for restart interval (no-op if not using restarts) */ - entropy->restarts_to_go--; - - return TRUE; - -undoit: - /* Re-zero any output coefficients that we made newly nonzero */ - while (num_newnz > 0) - (*block)[newnz_pos[--num_newnz]] = 0; - - return FALSE; -} - - -/* - * Module initialization routine for progressive Huffman entropy decoding. - */ - -GLOBAL(void) -jinit_phuff_decoder (j_decompress_ptr cinfo) -{ - phuff_entropy_ptr entropy; - int *coef_bit_ptr; - int ci, i; - - entropy = (phuff_entropy_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(phuff_entropy_decoder)); - cinfo->entropy = (struct jpeg_entropy_decoder *) entropy; - entropy->pub.start_pass = start_pass_phuff_decoder; - - /* Mark derived tables unallocated */ - for (i = 0; i < NUM_HUFF_TBLS; i++) { - entropy->derived_tbls[i] = NULL; - } - - /* Create progression status table */ - cinfo->coef_bits = (int (*)[DCTSIZE2]) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->num_components*DCTSIZE2*SIZEOF(int)); - coef_bit_ptr = & cinfo->coef_bits[0][0]; - for (ci = 0; ci < cinfo->num_components; ci++) - for (i = 0; i < DCTSIZE2; i++) - *coef_bit_ptr++ = -1; -} - -#endif /* D_PROGRESSIVE_SUPPORTED */ diff --git a/project/jni/jpeg/jdpostct.c b/project/jni/jpeg/jdpostct.c deleted file mode 100644 index 571563d72..000000000 --- a/project/jni/jpeg/jdpostct.c +++ /dev/null @@ -1,290 +0,0 @@ -/* - * jdpostct.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the decompression postprocessing controller. - * This controller manages the upsampling, color conversion, and color - * quantization/reduction steps; specifically, it controls the buffering - * between upsample/color conversion and color quantization/reduction. - * - * If no color quantization/reduction is required, then this module has no - * work to do, and it just hands off to the upsample/color conversion code. - * An integrated upsample/convert/quantize process would replace this module - * entirely. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Private buffer controller object */ - -typedef struct { - struct jpeg_d_post_controller pub; /* public fields */ - - /* Color quantization source buffer: this holds output data from - * the upsample/color conversion step to be passed to the quantizer. - * For two-pass color quantization, we need a full-image buffer; - * for one-pass operation, a strip buffer is sufficient. - */ - jvirt_sarray_ptr whole_image; /* virtual array, or NULL if one-pass */ - JSAMPARRAY buffer; /* strip buffer, or current strip of virtual */ - JDIMENSION strip_height; /* buffer size in rows */ - /* for two-pass mode only: */ - JDIMENSION starting_row; /* row # of first row in current strip */ - JDIMENSION next_row; /* index of next row to fill/empty in strip */ -} my_post_controller; - -typedef my_post_controller * my_post_ptr; - - -/* Forward declarations */ -METHODDEF(void) post_process_1pass - JPP((j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail)); -#ifdef QUANT_2PASS_SUPPORTED -METHODDEF(void) post_process_prepass - JPP((j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail)); -METHODDEF(void) post_process_2pass - JPP((j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail)); -#endif - - -/* - * Initialize for a processing pass. - */ - -METHODDEF(void) -start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) -{ - my_post_ptr post = (my_post_ptr) cinfo->post; - - switch (pass_mode) { - case JBUF_PASS_THRU: - if (cinfo->quantize_colors) { - /* Single-pass processing with color quantization. */ - post->pub.post_process_data = post_process_1pass; - /* We could be doing buffered-image output before starting a 2-pass - * color quantization; in that case, jinit_d_post_controller did not - * allocate a strip buffer. Use the virtual-array buffer as workspace. - */ - if (post->buffer == NULL) { - post->buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, post->whole_image, - (JDIMENSION) 0, post->strip_height, TRUE); - } - } else { - /* For single-pass processing without color quantization, - * I have no work to do; just call the upsampler directly. - */ - post->pub.post_process_data = cinfo->upsample->upsample; - } - break; -#ifdef QUANT_2PASS_SUPPORTED - case JBUF_SAVE_AND_PASS: - /* First pass of 2-pass quantization */ - if (post->whole_image == NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - post->pub.post_process_data = post_process_prepass; - break; - case JBUF_CRANK_DEST: - /* Second pass of 2-pass quantization */ - if (post->whole_image == NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - post->pub.post_process_data = post_process_2pass; - break; -#endif /* QUANT_2PASS_SUPPORTED */ - default: - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - break; - } - post->starting_row = post->next_row = 0; -} - - -/* - * Process some data in the one-pass (strip buffer) case. - * This is used for color precision reduction as well as one-pass quantization. - */ - -METHODDEF(void) -post_process_1pass (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - my_post_ptr post = (my_post_ptr) cinfo->post; - JDIMENSION num_rows, max_rows; - - /* Fill the buffer, but not more than what we can dump out in one go. */ - /* Note we rely on the upsampler to detect bottom of image. */ - max_rows = out_rows_avail - *out_row_ctr; - if (max_rows > post->strip_height) - max_rows = post->strip_height; - num_rows = 0; - (*cinfo->upsample->upsample) (cinfo, - input_buf, in_row_group_ctr, in_row_groups_avail, - post->buffer, &num_rows, max_rows); - /* Quantize and emit data. */ - (*cinfo->cquantize->color_quantize) (cinfo, - post->buffer, output_buf + *out_row_ctr, (int) num_rows); - *out_row_ctr += num_rows; -} - - -#ifdef QUANT_2PASS_SUPPORTED - -/* - * Process some data in the first pass of 2-pass quantization. - */ - -METHODDEF(void) -post_process_prepass (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - my_post_ptr post = (my_post_ptr) cinfo->post; - JDIMENSION old_next_row, num_rows; - - /* Reposition virtual buffer if at start of strip. */ - if (post->next_row == 0) { - post->buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, post->whole_image, - post->starting_row, post->strip_height, TRUE); - } - - /* Upsample some data (up to a strip height's worth). */ - old_next_row = post->next_row; - (*cinfo->upsample->upsample) (cinfo, - input_buf, in_row_group_ctr, in_row_groups_avail, - post->buffer, &post->next_row, post->strip_height); - - /* Allow quantizer to scan new data. No data is emitted, */ - /* but we advance out_row_ctr so outer loop can tell when we're done. */ - if (post->next_row > old_next_row) { - num_rows = post->next_row - old_next_row; - (*cinfo->cquantize->color_quantize) (cinfo, post->buffer + old_next_row, - (JSAMPARRAY) NULL, (int) num_rows); - *out_row_ctr += num_rows; - } - - /* Advance if we filled the strip. */ - if (post->next_row >= post->strip_height) { - post->starting_row += post->strip_height; - post->next_row = 0; - } -} - - -/* - * Process some data in the second pass of 2-pass quantization. - */ - -METHODDEF(void) -post_process_2pass (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - my_post_ptr post = (my_post_ptr) cinfo->post; - JDIMENSION num_rows, max_rows; - - /* Reposition virtual buffer if at start of strip. */ - if (post->next_row == 0) { - post->buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, post->whole_image, - post->starting_row, post->strip_height, FALSE); - } - - /* Determine number of rows to emit. */ - num_rows = post->strip_height - post->next_row; /* available in strip */ - max_rows = out_rows_avail - *out_row_ctr; /* available in output area */ - if (num_rows > max_rows) - num_rows = max_rows; - /* We have to check bottom of image here, can't depend on upsampler. */ - max_rows = cinfo->output_height - post->starting_row; - if (num_rows > max_rows) - num_rows = max_rows; - - /* Quantize and emit data. */ - (*cinfo->cquantize->color_quantize) (cinfo, - post->buffer + post->next_row, output_buf + *out_row_ctr, - (int) num_rows); - *out_row_ctr += num_rows; - - /* Advance if we filled the strip. */ - post->next_row += num_rows; - if (post->next_row >= post->strip_height) { - post->starting_row += post->strip_height; - post->next_row = 0; - } -} - -#endif /* QUANT_2PASS_SUPPORTED */ - - -/* - * Initialize postprocessing controller. - */ - -GLOBAL(void) -jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer) -{ - my_post_ptr post; - - post = (my_post_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_post_controller)); - cinfo->post = (struct jpeg_d_post_controller *) post; - post->pub.start_pass = start_pass_dpost; - post->whole_image = NULL; /* flag for no virtual arrays */ - post->buffer = NULL; /* flag for no strip buffer */ - - /* Create the quantization buffer, if needed */ - if (cinfo->quantize_colors) { - /* The buffer strip height is max_v_samp_factor, which is typically - * an efficient number of rows for upsampling to return. - * (In the presence of output rescaling, we might want to be smarter?) - */ - post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor; - if (need_full_buffer) { - /* Two-pass color quantization: need full-image storage. */ - /* We round up the number of rows to a multiple of the strip height. */ -#ifdef QUANT_2PASS_SUPPORTED - post->whole_image = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - cinfo->output_width * cinfo->out_color_components, - (JDIMENSION) jround_up((long) cinfo->output_height, - (long) post->strip_height), - post->strip_height); -#else - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); -#endif /* QUANT_2PASS_SUPPORTED */ - } else { - /* One-pass color quantization: just make a strip buffer. */ - post->buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->output_width * cinfo->out_color_components, - post->strip_height); - } - } -} diff --git a/project/jni/jpeg/jdsample.c b/project/jni/jpeg/jdsample.c deleted file mode 100644 index 80ffefb2a..000000000 --- a/project/jni/jpeg/jdsample.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * jdsample.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains upsampling routines. - * - * Upsampling input data is counted in "row groups". A row group - * is defined to be (v_samp_factor * DCT_scaled_size / min_DCT_scaled_size) - * sample rows of each component. Upsampling will normally produce - * max_v_samp_factor pixel rows from each row group (but this could vary - * if the upsampler is applying a scale factor of its own). - * - * An excellent reference for image resampling is - * Digital Image Warping, George Wolberg, 1990. - * Pub. by IEEE Computer Society Press, Los Alamitos, CA. ISBN 0-8186-8944-7. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Pointer to routine to upsample a single component */ -typedef JMETHOD(void, upsample1_ptr, - (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr)); - -/* Private subobject */ - -typedef struct { - struct jpeg_upsampler pub; /* public fields */ - - /* Color conversion buffer. When using separate upsampling and color - * conversion steps, this buffer holds one upsampled row group until it - * has been color converted and output. - * Note: we do not allocate any storage for component(s) which are full-size, - * ie do not need rescaling. The corresponding entry of color_buf[] is - * simply set to point to the input data array, thereby avoiding copying. - */ - JSAMPARRAY color_buf[MAX_COMPONENTS]; - - /* Per-component upsampling method pointers */ - upsample1_ptr methods[MAX_COMPONENTS]; - - int next_row_out; /* counts rows emitted from color_buf */ - JDIMENSION rows_to_go; /* counts rows remaining in image */ - - /* Height of an input row group for each component. */ - int rowgroup_height[MAX_COMPONENTS]; - - /* These arrays save pixel expansion factors so that int_expand need not - * recompute them each time. They are unused for other upsampling methods. - */ - UINT8 h_expand[MAX_COMPONENTS]; - UINT8 v_expand[MAX_COMPONENTS]; -} my_upsampler; - -typedef my_upsampler * my_upsample_ptr; - - -/* - * Initialize for an upsampling pass. - */ - -METHODDEF(void) -start_pass_upsample (j_decompress_ptr cinfo) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - - /* Mark the conversion buffer empty */ - upsample->next_row_out = cinfo->max_v_samp_factor; - /* Initialize total-height counter for detecting bottom of image */ - upsample->rows_to_go = cinfo->output_height; -} - - -/* - * Control routine to do upsampling (and color conversion). - * - * In this version we upsample each component independently. - * We upsample one row group into the conversion buffer, then apply - * color conversion a row at a time. - */ - -METHODDEF(void) -sep_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - int ci; - jpeg_component_info * compptr; - JDIMENSION num_rows; - - /* Fill the conversion buffer, if it's empty */ - if (upsample->next_row_out >= cinfo->max_v_samp_factor) { - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Invoke per-component upsample method. Notice we pass a POINTER - * to color_buf[ci], so that fullsize_upsample can change it. - */ - (*upsample->methods[ci]) (cinfo, compptr, - input_buf[ci] + (*in_row_group_ctr * upsample->rowgroup_height[ci]), - upsample->color_buf + ci); - } - upsample->next_row_out = 0; - } - - /* Color-convert and emit rows */ - - /* How many we have in the buffer: */ - num_rows = (JDIMENSION) (cinfo->max_v_samp_factor - upsample->next_row_out); - /* Not more than the distance to the end of the image. Need this test - * in case the image height is not a multiple of max_v_samp_factor: - */ - if (num_rows > upsample->rows_to_go) - num_rows = upsample->rows_to_go; - /* And not more than what the client can accept: */ - out_rows_avail -= *out_row_ctr; - if (num_rows > out_rows_avail) - num_rows = out_rows_avail; - - (*cinfo->cconvert->color_convert) (cinfo, upsample->color_buf, - (JDIMENSION) upsample->next_row_out, - output_buf + *out_row_ctr, - (int) num_rows); - - /* Adjust counts */ - *out_row_ctr += num_rows; - upsample->rows_to_go -= num_rows; - upsample->next_row_out += num_rows; - /* When the buffer is emptied, declare this input row group consumed */ - if (upsample->next_row_out >= cinfo->max_v_samp_factor) - (*in_row_group_ctr)++; -} - - -/* - * These are the routines invoked by sep_upsample to upsample pixel values - * of a single component. One row group is processed per call. - */ - - -/* - * For full-size components, we just make color_buf[ci] point at the - * input buffer, and thus avoid copying any data. Note that this is - * safe only because sep_upsample doesn't declare the input row group - * "consumed" until we are done color converting and emitting it. - */ - -METHODDEF(void) -fullsize_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - *output_data_ptr = input_data; -} - - -/* - * This is a no-op version used for "uninteresting" components. - * These components will not be referenced by color conversion. - */ - -METHODDEF(void) -noop_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - *output_data_ptr = NULL; /* safety check */ -} - - -/* - * This version handles any integral sampling ratios. - * This is not used for typical JPEG files, so it need not be fast. - * Nor, for that matter, is it particularly accurate: the algorithm is - * simple replication of the input pixel onto the corresponding output - * pixels. The hi-falutin sampling literature refers to this as a - * "box filter". A box filter tends to introduce visible artifacts, - * so if you are actually going to use 3:1 or 4:1 sampling ratios - * you would be well advised to improve this code. - */ - -METHODDEF(void) -int_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; - JSAMPARRAY output_data = *output_data_ptr; - register JSAMPROW inptr, outptr; - register JSAMPLE invalue; - register int h; - JSAMPROW outend; - int h_expand, v_expand; - int inrow, outrow; - - h_expand = upsample->h_expand[compptr->component_index]; - v_expand = upsample->v_expand[compptr->component_index]; - - inrow = outrow = 0; - while (outrow < cinfo->max_v_samp_factor) { - /* Generate one output row with proper horizontal expansion */ - inptr = input_data[inrow]; - outptr = output_data[outrow]; - outend = outptr + cinfo->output_width; - while (outptr < outend) { - invalue = *inptr++; /* don't need GETJSAMPLE() here */ - for (h = h_expand; h > 0; h--) { - *outptr++ = invalue; - } - } - /* Generate any additional output rows by duplicating the first one */ - if (v_expand > 1) { - jcopy_sample_rows(output_data, outrow, output_data, outrow+1, - v_expand-1, cinfo->output_width); - } - inrow++; - outrow += v_expand; - } -} - - -/* - * Fast processing for the common case of 2:1 horizontal and 1:1 vertical. - * It's still a box filter. - */ - -METHODDEF(void) -h2v1_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - JSAMPARRAY output_data = *output_data_ptr; - register JSAMPROW inptr, outptr; - register JSAMPLE invalue; - JSAMPROW outend; - int inrow; - - for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) { - inptr = input_data[inrow]; - outptr = output_data[inrow]; - outend = outptr + cinfo->output_width; - while (outptr < outend) { - invalue = *inptr++; /* don't need GETJSAMPLE() here */ - *outptr++ = invalue; - *outptr++ = invalue; - } - } -} - - -/* - * Fast processing for the common case of 2:1 horizontal and 2:1 vertical. - * It's still a box filter. - */ - -METHODDEF(void) -h2v2_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - JSAMPARRAY output_data = *output_data_ptr; - register JSAMPROW inptr, outptr; - register JSAMPLE invalue; - JSAMPROW outend; - int inrow, outrow; - - inrow = outrow = 0; - while (outrow < cinfo->max_v_samp_factor) { - inptr = input_data[inrow]; - outptr = output_data[outrow]; - outend = outptr + cinfo->output_width; - while (outptr < outend) { - invalue = *inptr++; /* don't need GETJSAMPLE() here */ - *outptr++ = invalue; - *outptr++ = invalue; - } - jcopy_sample_rows(output_data, outrow, output_data, outrow+1, - 1, cinfo->output_width); - inrow++; - outrow += 2; - } -} - - -/* - * Fancy processing for the common case of 2:1 horizontal and 1:1 vertical. - * - * The upsampling algorithm is linear interpolation between pixel centers, - * also known as a "triangle filter". This is a good compromise between - * speed and visual quality. The centers of the output pixels are 1/4 and 3/4 - * of the way between input pixel centers. - * - * A note about the "bias" calculations: when rounding fractional values to - * integer, we do not want to always round 0.5 up to the next integer. - * If we did that, we'd introduce a noticeable bias towards larger values. - * Instead, this code is arranged so that 0.5 will be rounded up or down at - * alternate pixel locations (a simple ordered dither pattern). - */ - -METHODDEF(void) -h2v1_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - JSAMPARRAY output_data = *output_data_ptr; - register JSAMPROW inptr, outptr; - register int invalue; - register JDIMENSION colctr; - int inrow; - - for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++) { - inptr = input_data[inrow]; - outptr = output_data[inrow]; - /* Special case for first column */ - invalue = GETJSAMPLE(*inptr++); - *outptr++ = (JSAMPLE) invalue; - *outptr++ = (JSAMPLE) ((invalue * 3 + GETJSAMPLE(*inptr) + 2) >> 2); - - for (colctr = compptr->downsampled_width - 2; colctr > 0; colctr--) { - /* General case: 3/4 * nearer pixel + 1/4 * further pixel */ - invalue = GETJSAMPLE(*inptr++) * 3; - *outptr++ = (JSAMPLE) ((invalue + GETJSAMPLE(inptr[-2]) + 1) >> 2); - *outptr++ = (JSAMPLE) ((invalue + GETJSAMPLE(*inptr) + 2) >> 2); - } - - /* Special case for last column */ - invalue = GETJSAMPLE(*inptr); - *outptr++ = (JSAMPLE) ((invalue * 3 + GETJSAMPLE(inptr[-1]) + 1) >> 2); - *outptr++ = (JSAMPLE) invalue; - } -} - - -/* - * Fancy processing for the common case of 2:1 horizontal and 2:1 vertical. - * Again a triangle filter; see comments for h2v1 case, above. - * - * It is OK for us to reference the adjacent input rows because we demanded - * context from the main buffer controller (see initialization code). - */ - -METHODDEF(void) -h2v2_fancy_upsample (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JSAMPARRAY input_data, JSAMPARRAY * output_data_ptr) -{ - JSAMPARRAY output_data = *output_data_ptr; - register JSAMPROW inptr0, inptr1, outptr; -#if BITS_IN_JSAMPLE == 8 - register int thiscolsum, lastcolsum, nextcolsum; -#else - register INT32 thiscolsum, lastcolsum, nextcolsum; -#endif - register JDIMENSION colctr; - int inrow, outrow, v; - - inrow = outrow = 0; - while (outrow < cinfo->max_v_samp_factor) { - for (v = 0; v < 2; v++) { - /* inptr0 points to nearest input row, inptr1 points to next nearest */ - inptr0 = input_data[inrow]; - if (v == 0) /* next nearest is row above */ - inptr1 = input_data[inrow-1]; - else /* next nearest is row below */ - inptr1 = input_data[inrow+1]; - outptr = output_data[outrow++]; - - /* Special case for first column */ - thiscolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++); - nextcolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++); - *outptr++ = (JSAMPLE) ((thiscolsum * 4 + 8) >> 4); - *outptr++ = (JSAMPLE) ((thiscolsum * 3 + nextcolsum + 7) >> 4); - lastcolsum = thiscolsum; thiscolsum = nextcolsum; - - for (colctr = compptr->downsampled_width - 2; colctr > 0; colctr--) { - /* General case: 3/4 * nearer pixel + 1/4 * further pixel in each */ - /* dimension, thus 9/16, 3/16, 3/16, 1/16 overall */ - nextcolsum = GETJSAMPLE(*inptr0++) * 3 + GETJSAMPLE(*inptr1++); - *outptr++ = (JSAMPLE) ((thiscolsum * 3 + lastcolsum + 8) >> 4); - *outptr++ = (JSAMPLE) ((thiscolsum * 3 + nextcolsum + 7) >> 4); - lastcolsum = thiscolsum; thiscolsum = nextcolsum; - } - - /* Special case for last column */ - *outptr++ = (JSAMPLE) ((thiscolsum * 3 + lastcolsum + 8) >> 4); - *outptr++ = (JSAMPLE) ((thiscolsum * 4 + 7) >> 4); - } - inrow++; - } -} - - -/* - * Module initialization routine for upsampling. - */ - -GLOBAL(void) -jinit_upsampler (j_decompress_ptr cinfo) -{ - my_upsample_ptr upsample; - int ci; - jpeg_component_info * compptr; - boolean need_buffer, do_fancy; - int h_in_group, v_in_group, h_out_group, v_out_group; - - upsample = (my_upsample_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_upsampler)); - cinfo->upsample = (struct jpeg_upsampler *) upsample; - upsample->pub.start_pass = start_pass_upsample; - upsample->pub.upsample = sep_upsample; - upsample->pub.need_context_rows = FALSE; /* until we find out differently */ - - if (cinfo->CCIR601_sampling) /* this isn't supported */ - ERREXIT(cinfo, JERR_CCIR601_NOTIMPL); - - /* jdmainct.c doesn't support context rows when min_DCT_scaled_size = 1, - * so don't ask for it. - */ - do_fancy = cinfo->do_fancy_upsampling && cinfo->min_DCT_scaled_size > 1; - - /* Verify we can handle the sampling factors, select per-component methods, - * and create storage as needed. - */ - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Compute size of an "input group" after IDCT scaling. This many samples - * are to be converted to max_h_samp_factor * max_v_samp_factor pixels. - */ - h_in_group = (compptr->h_samp_factor * compptr->DCT_scaled_size) / - cinfo->min_DCT_scaled_size; - v_in_group = (compptr->v_samp_factor * compptr->DCT_scaled_size) / - cinfo->min_DCT_scaled_size; - h_out_group = cinfo->max_h_samp_factor; - v_out_group = cinfo->max_v_samp_factor; - upsample->rowgroup_height[ci] = v_in_group; /* save for use later */ - need_buffer = TRUE; - if (! compptr->component_needed) { - /* Don't bother to upsample an uninteresting component. */ - upsample->methods[ci] = noop_upsample; - need_buffer = FALSE; - } else if (h_in_group == h_out_group && v_in_group == v_out_group) { - /* Fullsize components can be processed without any work. */ - upsample->methods[ci] = fullsize_upsample; - need_buffer = FALSE; - } else if (h_in_group * 2 == h_out_group && - v_in_group == v_out_group) { - /* Special cases for 2h1v upsampling */ - if (do_fancy && compptr->downsampled_width > 2) - upsample->methods[ci] = h2v1_fancy_upsample; - else - upsample->methods[ci] = h2v1_upsample; - } else if (h_in_group * 2 == h_out_group && - v_in_group * 2 == v_out_group) { - /* Special cases for 2h2v upsampling */ - if (do_fancy && compptr->downsampled_width > 2) { - upsample->methods[ci] = h2v2_fancy_upsample; - upsample->pub.need_context_rows = TRUE; - } else - upsample->methods[ci] = h2v2_upsample; - } else if ((h_out_group % h_in_group) == 0 && - (v_out_group % v_in_group) == 0) { - /* Generic integral-factors upsampling method */ - upsample->methods[ci] = int_upsample; - upsample->h_expand[ci] = (UINT8) (h_out_group / h_in_group); - upsample->v_expand[ci] = (UINT8) (v_out_group / v_in_group); - } else - ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL); - if (need_buffer) { - upsample->color_buf[ci] = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) jround_up((long) cinfo->output_width, - (long) cinfo->max_h_samp_factor), - (JDIMENSION) cinfo->max_v_samp_factor); - } - } -} diff --git a/project/jni/jpeg/jdtrans.c b/project/jni/jpeg/jdtrans.c deleted file mode 100644 index 6c0ab715d..000000000 --- a/project/jni/jpeg/jdtrans.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * jdtrans.c - * - * Copyright (C) 1995-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains library routines for transcoding decompression, - * that is, reading raw DCT coefficient arrays from an input JPEG file. - * The routines in jdapimin.c will also be needed by a transcoder. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* Forward declarations */ -LOCAL(void) transdecode_master_selection JPP((j_decompress_ptr cinfo)); - - -/* - * Read the coefficient arrays from a JPEG file. - * jpeg_read_header must be completed before calling this. - * - * The entire image is read into a set of virtual coefficient-block arrays, - * one per component. The return value is a pointer to the array of - * virtual-array descriptors. These can be manipulated directly via the - * JPEG memory manager, or handed off to jpeg_write_coefficients(). - * To release the memory occupied by the virtual arrays, call - * jpeg_finish_decompress() when done with the data. - * - * An alternative usage is to simply obtain access to the coefficient arrays - * during a buffered-image-mode decompression operation. This is allowed - * after any jpeg_finish_output() call. The arrays can be accessed until - * jpeg_finish_decompress() is called. (Note that any call to the library - * may reposition the arrays, so don't rely on access_virt_barray() results - * to stay valid across library calls.) - * - * Returns NULL if suspended. This case need be checked only if - * a suspending data source is used. - */ - -GLOBAL(jvirt_barray_ptr *) -jpeg_read_coefficients (j_decompress_ptr cinfo) -{ - if (cinfo->global_state == DSTATE_READY) { - /* First call: initialize active modules */ - transdecode_master_selection(cinfo); - cinfo->global_state = DSTATE_RDCOEFS; - } - if (cinfo->global_state == DSTATE_RDCOEFS) { - /* Absorb whole file into the coef buffer */ - for (;;) { - int retcode; - /* Call progress monitor hook if present */ - if (cinfo->progress != NULL) - (*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo); - /* Absorb some more input */ - retcode = (*cinfo->inputctl->consume_input) (cinfo); - if (retcode == JPEG_SUSPENDED) - return NULL; - if (retcode == JPEG_REACHED_EOI) - break; - /* Advance progress counter if appropriate */ - if (cinfo->progress != NULL && - (retcode == JPEG_ROW_COMPLETED || retcode == JPEG_REACHED_SOS)) { - if (++cinfo->progress->pass_counter >= cinfo->progress->pass_limit) { - /* startup underestimated number of scans; ratchet up one scan */ - cinfo->progress->pass_limit += (long) cinfo->total_iMCU_rows; - } - } - } - /* Set state so that jpeg_finish_decompress does the right thing */ - cinfo->global_state = DSTATE_STOPPING; - } - /* At this point we should be in state DSTATE_STOPPING if being used - * standalone, or in state DSTATE_BUFIMAGE if being invoked to get access - * to the coefficients during a full buffered-image-mode decompression. - */ - if ((cinfo->global_state == DSTATE_STOPPING || - cinfo->global_state == DSTATE_BUFIMAGE) && cinfo->buffered_image) { - return cinfo->coef->coef_arrays; - } - /* Oops, improper usage */ - ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); - return NULL; /* keep compiler happy */ -} - - -/* - * Master selection of decompression modules for transcoding. - * This substitutes for jdmaster.c's initialization of the full decompressor. - */ - -LOCAL(void) -transdecode_master_selection (j_decompress_ptr cinfo) -{ - /* This is effectively a buffered-image operation. */ - cinfo->buffered_image = TRUE; - - /* Entropy decoding: either Huffman or arithmetic coding. */ - if (cinfo->arith_code) { - ERREXIT(cinfo, JERR_ARITH_NOTIMPL); - } else { - if (cinfo->progressive_mode) { -#ifdef D_PROGRESSIVE_SUPPORTED - jinit_phuff_decoder(cinfo); -#else - ERREXIT(cinfo, JERR_NOT_COMPILED); -#endif - } else - jinit_huff_decoder(cinfo); - } - - /* Always get a full-image coefficient buffer. */ - jinit_d_coef_controller(cinfo, TRUE); - - /* We can now tell the memory manager to allocate virtual arrays. */ - (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); - - /* Initialize input side of decompressor to consume first scan. */ - (*cinfo->inputctl->start_input_pass) (cinfo); - - /* Initialize progress monitoring. */ - if (cinfo->progress != NULL) { - int nscans; - /* Estimate number of scans to set pass_limit. */ - if (cinfo->progressive_mode) { - /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */ - nscans = 2 + 3 * cinfo->num_components; - } else if (cinfo->inputctl->has_multiple_scans) { - /* For a nonprogressive multiscan file, estimate 1 scan per component. */ - nscans = cinfo->num_components; - } else { - nscans = 1; - } - cinfo->progress->pass_counter = 0L; - cinfo->progress->pass_limit = (long) cinfo->total_iMCU_rows * nscans; - cinfo->progress->completed_passes = 0; - cinfo->progress->total_passes = 1; - } -} diff --git a/project/jni/jpeg/jerror.c b/project/jni/jpeg/jerror.c deleted file mode 100644 index 3da7be86a..000000000 --- a/project/jni/jpeg/jerror.c +++ /dev/null @@ -1,252 +0,0 @@ -/* - * jerror.c - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains simple error-reporting and trace-message routines. - * These are suitable for Unix-like systems and others where writing to - * stderr is the right thing to do. Many applications will want to replace - * some or all of these routines. - * - * If you define USE_WINDOWS_MESSAGEBOX in jconfig.h or in the makefile, - * you get a Windows-specific hack to display error messages in a dialog box. - * It ain't much, but it beats dropping error messages into the bit bucket, - * which is what happens to output to stderr under most Windows C compilers. - * - * These routines are used by both the compression and decompression code. - */ - -/* this is not a core library module, so it doesn't define JPEG_INTERNALS */ -#include "jinclude.h" -#include "jpeglib.h" -#include "jversion.h" -#include "jerror.h" - -#ifdef USE_WINDOWS_MESSAGEBOX -#include -#endif - -#ifndef EXIT_FAILURE /* define exit() codes if not provided */ -#define EXIT_FAILURE 1 -#endif - - -/* - * Create the message string table. - * We do this from the master message list in jerror.h by re-reading - * jerror.h with a suitable definition for macro JMESSAGE. - * The message table is made an external symbol just in case any applications - * want to refer to it directly. - */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jpeg_std_message_table jMsgTable -#endif - -#define JMESSAGE(code,string) string , - -const char * const jpeg_std_message_table[] = { -#include "jerror.h" - NULL -}; - - -/* - * Error exit handler: must not return to caller. - * - * Applications may override this if they want to get control back after - * an error. Typically one would longjmp somewhere instead of exiting. - * The setjmp buffer can be made a private field within an expanded error - * handler object. Note that the info needed to generate an error message - * is stored in the error object, so you can generate the message now or - * later, at your convenience. - * You should make sure that the JPEG object is cleaned up (with jpeg_abort - * or jpeg_destroy) at some point. - */ - -METHODDEF(void) -error_exit (j_common_ptr cinfo) -{ - /* Always display the message */ - (*cinfo->err->output_message) (cinfo); - - /* Let the memory manager delete any temp files before we die */ - jpeg_destroy(cinfo); - - exit(EXIT_FAILURE); -} - - -/* - * Actual output of an error or trace message. - * Applications may override this method to send JPEG messages somewhere - * other than stderr. - * - * On Windows, printing to stderr is generally completely useless, - * so we provide optional code to produce an error-dialog popup. - * Most Windows applications will still prefer to override this routine, - * but if they don't, it'll do something at least marginally useful. - * - * NOTE: to use the library in an environment that doesn't support the - * C stdio library, you may have to delete the call to fprintf() entirely, - * not just not use this routine. - */ - -METHODDEF(void) -output_message (j_common_ptr cinfo) -{ - char buffer[JMSG_LENGTH_MAX]; - - /* Create the message */ - (*cinfo->err->format_message) (cinfo, buffer); - -#ifdef USE_WINDOWS_MESSAGEBOX - /* Display it in a message dialog box */ - MessageBox(GetActiveWindow(), buffer, "JPEG Library Error", - MB_OK | MB_ICONERROR); -#else - /* Send it to stderr, adding a newline */ - fprintf(stderr, "%s\n", buffer); -#endif -} - - -/* - * Decide whether to emit a trace or warning message. - * msg_level is one of: - * -1: recoverable corrupt-data warning, may want to abort. - * 0: important advisory messages (always display to user). - * 1: first level of tracing detail. - * 2,3,...: successively more detailed tracing messages. - * An application might override this method if it wanted to abort on warnings - * or change the policy about which messages to display. - */ - -METHODDEF(void) -emit_message (j_common_ptr cinfo, int msg_level) -{ - struct jpeg_error_mgr * err = cinfo->err; - - if (msg_level < 0) { - /* It's a warning message. Since corrupt files may generate many warnings, - * the policy implemented here is to show only the first warning, - * unless trace_level >= 3. - */ - if (err->num_warnings == 0 || err->trace_level >= 3) - (*err->output_message) (cinfo); - /* Always count warnings in num_warnings. */ - err->num_warnings++; - } else { - /* It's a trace message. Show it if trace_level >= msg_level. */ - if (err->trace_level >= msg_level) - (*err->output_message) (cinfo); - } -} - - -/* - * Format a message string for the most recent JPEG error or message. - * The message is stored into buffer, which should be at least JMSG_LENGTH_MAX - * characters. Note that no '\n' character is added to the string. - * Few applications should need to override this method. - */ - -METHODDEF(void) -format_message (j_common_ptr cinfo, char * buffer) -{ - struct jpeg_error_mgr * err = cinfo->err; - int msg_code = err->msg_code; - const char * msgtext = NULL; - const char * msgptr; - char ch; - boolean isstring; - - /* Look up message string in proper table */ - if (msg_code > 0 && msg_code <= err->last_jpeg_message) { - msgtext = err->jpeg_message_table[msg_code]; - } else if (err->addon_message_table != NULL && - msg_code >= err->first_addon_message && - msg_code <= err->last_addon_message) { - msgtext = err->addon_message_table[msg_code - err->first_addon_message]; - } - - /* Defend against bogus message number */ - if (msgtext == NULL) { - err->msg_parm.i[0] = msg_code; - msgtext = err->jpeg_message_table[0]; - } - - /* Check for string parameter, as indicated by %s in the message text */ - isstring = FALSE; - msgptr = msgtext; - while ((ch = *msgptr++) != '\0') { - if (ch == '%') { - if (*msgptr == 's') isstring = TRUE; - break; - } - } - - /* Format the message into the passed buffer */ - if (isstring) - sprintf(buffer, msgtext, err->msg_parm.s); - else - sprintf(buffer, msgtext, - err->msg_parm.i[0], err->msg_parm.i[1], - err->msg_parm.i[2], err->msg_parm.i[3], - err->msg_parm.i[4], err->msg_parm.i[5], - err->msg_parm.i[6], err->msg_parm.i[7]); -} - - -/* - * Reset error state variables at start of a new image. - * This is called during compression startup to reset trace/error - * processing to default state, without losing any application-specific - * method pointers. An application might possibly want to override - * this method if it has additional error processing state. - */ - -METHODDEF(void) -reset_error_mgr (j_common_ptr cinfo) -{ - cinfo->err->num_warnings = 0; - /* trace_level is not reset since it is an application-supplied parameter */ - cinfo->err->msg_code = 0; /* may be useful as a flag for "no error" */ -} - - -/* - * Fill in the standard error-handling methods in a jpeg_error_mgr object. - * Typical call is: - * struct jpeg_compress_struct cinfo; - * struct jpeg_error_mgr err; - * - * cinfo.err = jpeg_std_error(&err); - * after which the application may override some of the methods. - */ - -GLOBAL(struct jpeg_error_mgr *) -jpeg_std_error (struct jpeg_error_mgr * err) -{ - err->error_exit = error_exit; - err->emit_message = emit_message; - err->output_message = output_message; - err->format_message = format_message; - err->reset_error_mgr = reset_error_mgr; - - err->trace_level = 0; /* default = no tracing */ - err->num_warnings = 0; /* no warnings emitted yet */ - err->msg_code = 0; /* may be useful as a flag for "no error" */ - - /* Initialize message table pointers */ - err->jpeg_message_table = jpeg_std_message_table; - err->last_jpeg_message = (int) JMSG_LASTMSGCODE - 1; - - err->addon_message_table = NULL; - err->first_addon_message = 0; /* for safety */ - err->last_addon_message = 0; - - return err; -} diff --git a/project/jni/jpeg/jfdctflt.c b/project/jni/jpeg/jfdctflt.c deleted file mode 100644 index 79d7a0078..000000000 --- a/project/jni/jpeg/jfdctflt.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * jfdctflt.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a floating-point implementation of the - * forward DCT (Discrete Cosine Transform). - * - * This implementation should be more accurate than either of the integer - * DCT implementations. However, it may not give the same results on all - * machines because of differences in roundoff behavior. Speed will depend - * on the hardware's floating point capacity. - * - * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT - * on each column. Direct algorithms are also available, but they are - * much more complex and seem not to be any faster when reduced to code. - * - * This implementation is based on Arai, Agui, and Nakajima's algorithm for - * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in - * Japanese, but the algorithm is described in the Pennebaker & Mitchell - * JPEG textbook (see REFERENCES section in file README). The following code - * is based directly on figure 4-8 in P&M. - * While an 8-point DCT cannot be done in less than 11 multiplies, it is - * possible to arrange the computation so that many of the multiplies are - * simple scalings of the final outputs. These multiplies can then be - * folded into the multiplications or divisions by the JPEG quantization - * table entries. The AA&N method leaves only 5 multiplies and 29 adds - * to be done in the DCT itself. - * The primary disadvantage of this method is that with a fixed-point - * implementation, accuracy is lost due to imprecise representation of the - * scaled quantization values. However, that problem does not arise if - * we use floating point arithmetic. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef DCT_FLOAT_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* - * Perform the forward DCT on one block of samples. - */ - -GLOBAL(void) -jpeg_fdct_float (FAST_FLOAT * data) -{ - FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; - FAST_FLOAT tmp10, tmp11, tmp12, tmp13; - FAST_FLOAT z1, z2, z3, z4, z5, z11, z13; - FAST_FLOAT *dataptr; - int ctr; - - /* Pass 1: process rows. */ - - dataptr = data; - for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { - tmp0 = dataptr[0] + dataptr[7]; - tmp7 = dataptr[0] - dataptr[7]; - tmp1 = dataptr[1] + dataptr[6]; - tmp6 = dataptr[1] - dataptr[6]; - tmp2 = dataptr[2] + dataptr[5]; - tmp5 = dataptr[2] - dataptr[5]; - tmp3 = dataptr[3] + dataptr[4]; - tmp4 = dataptr[3] - dataptr[4]; - - /* Even part */ - - tmp10 = tmp0 + tmp3; /* phase 2 */ - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - dataptr[0] = tmp10 + tmp11; /* phase 3 */ - dataptr[4] = tmp10 - tmp11; - - z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */ - dataptr[2] = tmp13 + z1; /* phase 5 */ - dataptr[6] = tmp13 - z1; - - /* Odd part */ - - tmp10 = tmp4 + tmp5; /* phase 2 */ - tmp11 = tmp5 + tmp6; - tmp12 = tmp6 + tmp7; - - /* The rotator is modified from fig 4-8 to avoid extra negations. */ - z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */ - z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */ - z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */ - z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */ - - z11 = tmp7 + z3; /* phase 5 */ - z13 = tmp7 - z3; - - dataptr[5] = z13 + z2; /* phase 6 */ - dataptr[3] = z13 - z2; - dataptr[1] = z11 + z4; - dataptr[7] = z11 - z4; - - dataptr += DCTSIZE; /* advance pointer to next row */ - } - - /* Pass 2: process columns. */ - - dataptr = data; - for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { - tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; - tmp7 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; - tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; - tmp6 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; - tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; - tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; - tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; - tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; - - /* Even part */ - - tmp10 = tmp0 + tmp3; /* phase 2 */ - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */ - dataptr[DCTSIZE*4] = tmp10 - tmp11; - - z1 = (tmp12 + tmp13) * ((FAST_FLOAT) 0.707106781); /* c4 */ - dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */ - dataptr[DCTSIZE*6] = tmp13 - z1; - - /* Odd part */ - - tmp10 = tmp4 + tmp5; /* phase 2 */ - tmp11 = tmp5 + tmp6; - tmp12 = tmp6 + tmp7; - - /* The rotator is modified from fig 4-8 to avoid extra negations. */ - z5 = (tmp10 - tmp12) * ((FAST_FLOAT) 0.382683433); /* c6 */ - z2 = ((FAST_FLOAT) 0.541196100) * tmp10 + z5; /* c2-c6 */ - z4 = ((FAST_FLOAT) 1.306562965) * tmp12 + z5; /* c2+c6 */ - z3 = tmp11 * ((FAST_FLOAT) 0.707106781); /* c4 */ - - z11 = tmp7 + z3; /* phase 5 */ - z13 = tmp7 - z3; - - dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */ - dataptr[DCTSIZE*3] = z13 - z2; - dataptr[DCTSIZE*1] = z11 + z4; - dataptr[DCTSIZE*7] = z11 - z4; - - dataptr++; /* advance pointer to next column */ - } -} - -#endif /* DCT_FLOAT_SUPPORTED */ diff --git a/project/jni/jpeg/jfdctfst.c b/project/jni/jpeg/jfdctfst.c deleted file mode 100644 index ccb378a3b..000000000 --- a/project/jni/jpeg/jfdctfst.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * jfdctfst.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a fast, not so accurate integer implementation of the - * forward DCT (Discrete Cosine Transform). - * - * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT - * on each column. Direct algorithms are also available, but they are - * much more complex and seem not to be any faster when reduced to code. - * - * This implementation is based on Arai, Agui, and Nakajima's algorithm for - * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in - * Japanese, but the algorithm is described in the Pennebaker & Mitchell - * JPEG textbook (see REFERENCES section in file README). The following code - * is based directly on figure 4-8 in P&M. - * While an 8-point DCT cannot be done in less than 11 multiplies, it is - * possible to arrange the computation so that many of the multiplies are - * simple scalings of the final outputs. These multiplies can then be - * folded into the multiplications or divisions by the JPEG quantization - * table entries. The AA&N method leaves only 5 multiplies and 29 adds - * to be done in the DCT itself. - * The primary disadvantage of this method is that with fixed-point math, - * accuracy is lost due to imprecise representation of the scaled - * quantization values. The smaller the quantization table entry, the less - * precise the scaled value, so this implementation does worse with high- - * quality-setting files than with low-quality ones. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef DCT_IFAST_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* Scaling decisions are generally the same as in the LL&M algorithm; - * see jfdctint.c for more details. However, we choose to descale - * (right shift) multiplication products as soon as they are formed, - * rather than carrying additional fractional bits into subsequent additions. - * This compromises accuracy slightly, but it lets us save a few shifts. - * More importantly, 16-bit arithmetic is then adequate (for 8-bit samples) - * everywhere except in the multiplications proper; this saves a good deal - * of work on 16-bit-int machines. - * - * Again to save a few shifts, the intermediate results between pass 1 and - * pass 2 are not upscaled, but are represented only to integral precision. - * - * A final compromise is to represent the multiplicative constants to only - * 8 fractional bits, rather than 13. This saves some shifting work on some - * machines, and may also reduce the cost of multiplication (since there - * are fewer one-bits in the constants). - */ - -#define CONST_BITS 8 - - -/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus - * causing a lot of useless floating-point operations at run time. - * To get around this we use the following pre-calculated constants. - * If you change CONST_BITS you may want to add appropriate values. - * (With a reasonable C compiler, you can just rely on the FIX() macro...) - */ - -#if CONST_BITS == 8 -#define FIX_0_382683433 ((INT32) 98) /* FIX(0.382683433) */ -#define FIX_0_541196100 ((INT32) 139) /* FIX(0.541196100) */ -#define FIX_0_707106781 ((INT32) 181) /* FIX(0.707106781) */ -#define FIX_1_306562965 ((INT32) 334) /* FIX(1.306562965) */ -#else -#define FIX_0_382683433 FIX(0.382683433) -#define FIX_0_541196100 FIX(0.541196100) -#define FIX_0_707106781 FIX(0.707106781) -#define FIX_1_306562965 FIX(1.306562965) -#endif - - -/* We can gain a little more speed, with a further compromise in accuracy, - * by omitting the addition in a descaling shift. This yields an incorrectly - * rounded result half the time... - */ - -#ifndef USE_ACCURATE_ROUNDING -#undef DESCALE -#define DESCALE(x,n) RIGHT_SHIFT(x, n) -#endif - - -/* Multiply a DCTELEM variable by an INT32 constant, and immediately - * descale to yield a DCTELEM result. - */ - -#define MULTIPLY(var,const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS)) - - -/* - * Perform the forward DCT on one block of samples. - */ - -GLOBAL(void) -jpeg_fdct_ifast (DCTELEM * data) -{ - DCTELEM tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; - DCTELEM tmp10, tmp11, tmp12, tmp13; - DCTELEM z1, z2, z3, z4, z5, z11, z13; - DCTELEM *dataptr; - int ctr; - SHIFT_TEMPS - - /* Pass 1: process rows. */ - - dataptr = data; - for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { - tmp0 = dataptr[0] + dataptr[7]; - tmp7 = dataptr[0] - dataptr[7]; - tmp1 = dataptr[1] + dataptr[6]; - tmp6 = dataptr[1] - dataptr[6]; - tmp2 = dataptr[2] + dataptr[5]; - tmp5 = dataptr[2] - dataptr[5]; - tmp3 = dataptr[3] + dataptr[4]; - tmp4 = dataptr[3] - dataptr[4]; - - /* Even part */ - - tmp10 = tmp0 + tmp3; /* phase 2 */ - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - dataptr[0] = tmp10 + tmp11; /* phase 3 */ - dataptr[4] = tmp10 - tmp11; - - z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */ - dataptr[2] = tmp13 + z1; /* phase 5 */ - dataptr[6] = tmp13 - z1; - - /* Odd part */ - - tmp10 = tmp4 + tmp5; /* phase 2 */ - tmp11 = tmp5 + tmp6; - tmp12 = tmp6 + tmp7; - - /* The rotator is modified from fig 4-8 to avoid extra negations. */ - z5 = MULTIPLY(tmp10 - tmp12, FIX_0_382683433); /* c6 */ - z2 = MULTIPLY(tmp10, FIX_0_541196100) + z5; /* c2-c6 */ - z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */ - z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */ - - z11 = tmp7 + z3; /* phase 5 */ - z13 = tmp7 - z3; - - dataptr[5] = z13 + z2; /* phase 6 */ - dataptr[3] = z13 - z2; - dataptr[1] = z11 + z4; - dataptr[7] = z11 - z4; - - dataptr += DCTSIZE; /* advance pointer to next row */ - } - - /* Pass 2: process columns. */ - - dataptr = data; - for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { - tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; - tmp7 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; - tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; - tmp6 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; - tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; - tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; - tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; - tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; - - /* Even part */ - - tmp10 = tmp0 + tmp3; /* phase 2 */ - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */ - dataptr[DCTSIZE*4] = tmp10 - tmp11; - - z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */ - dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */ - dataptr[DCTSIZE*6] = tmp13 - z1; - - /* Odd part */ - - tmp10 = tmp4 + tmp5; /* phase 2 */ - tmp11 = tmp5 + tmp6; - tmp12 = tmp6 + tmp7; - - /* The rotator is modified from fig 4-8 to avoid extra negations. */ - z5 = MULTIPLY(tmp10 - tmp12, FIX_0_382683433); /* c6 */ - z2 = MULTIPLY(tmp10, FIX_0_541196100) + z5; /* c2-c6 */ - z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */ - z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */ - - z11 = tmp7 + z3; /* phase 5 */ - z13 = tmp7 - z3; - - dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */ - dataptr[DCTSIZE*3] = z13 - z2; - dataptr[DCTSIZE*1] = z11 + z4; - dataptr[DCTSIZE*7] = z11 - z4; - - dataptr++; /* advance pointer to next column */ - } -} - -#endif /* DCT_IFAST_SUPPORTED */ diff --git a/project/jni/jpeg/jfdctint.c b/project/jni/jpeg/jfdctint.c deleted file mode 100644 index 0a78b64ae..000000000 --- a/project/jni/jpeg/jfdctint.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - * jfdctint.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a slow-but-accurate integer implementation of the - * forward DCT (Discrete Cosine Transform). - * - * A 2-D DCT can be done by 1-D DCT on each row followed by 1-D DCT - * on each column. Direct algorithms are also available, but they are - * much more complex and seem not to be any faster when reduced to code. - * - * This implementation is based on an algorithm described in - * C. Loeffler, A. Ligtenberg and G. Moschytz, "Practical Fast 1-D DCT - * Algorithms with 11 Multiplications", Proc. Int'l. Conf. on Acoustics, - * Speech, and Signal Processing 1989 (ICASSP '89), pp. 988-991. - * The primary algorithm described there uses 11 multiplies and 29 adds. - * We use their alternate method with 12 multiplies and 32 adds. - * The advantage of this method is that no data path contains more than one - * multiplication; this allows a very simple and accurate implementation in - * scaled fixed-point arithmetic, with a minimal number of shifts. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef DCT_ISLOW_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* - * The poop on this scaling stuff is as follows: - * - * Each 1-D DCT step produces outputs which are a factor of sqrt(N) - * larger than the true DCT outputs. The final outputs are therefore - * a factor of N larger than desired; since N=8 this can be cured by - * a simple right shift at the end of the algorithm. The advantage of - * this arrangement is that we save two multiplications per 1-D DCT, - * because the y0 and y4 outputs need not be divided by sqrt(N). - * In the IJG code, this factor of 8 is removed by the quantization step - * (in jcdctmgr.c), NOT in this module. - * - * We have to do addition and subtraction of the integer inputs, which - * is no problem, and multiplication by fractional constants, which is - * a problem to do in integer arithmetic. We multiply all the constants - * by CONST_SCALE and convert them to integer constants (thus retaining - * CONST_BITS bits of precision in the constants). After doing a - * multiplication we have to divide the product by CONST_SCALE, with proper - * rounding, to produce the correct output. This division can be done - * cheaply as a right shift of CONST_BITS bits. We postpone shifting - * as long as possible so that partial sums can be added together with - * full fractional precision. - * - * The outputs of the first pass are scaled up by PASS1_BITS bits so that - * they are represented to better-than-integral precision. These outputs - * require BITS_IN_JSAMPLE + PASS1_BITS + 3 bits; this fits in a 16-bit word - * with the recommended scaling. (For 12-bit sample data, the intermediate - * array is INT32 anyway.) - * - * To avoid overflow of the 32-bit intermediate results in pass 2, we must - * have BITS_IN_JSAMPLE + CONST_BITS + PASS1_BITS <= 26. Error analysis - * shows that the values given below are the most effective. - */ - -#if BITS_IN_JSAMPLE == 8 -#define CONST_BITS 13 -#define PASS1_BITS 2 -#else -#define CONST_BITS 13 -#define PASS1_BITS 1 /* lose a little precision to avoid overflow */ -#endif - -/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus - * causing a lot of useless floating-point operations at run time. - * To get around this we use the following pre-calculated constants. - * If you change CONST_BITS you may want to add appropriate values. - * (With a reasonable C compiler, you can just rely on the FIX() macro...) - */ - -#if CONST_BITS == 13 -#define FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */ -#define FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */ -#define FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */ -#define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */ -#define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */ -#define FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */ -#define FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */ -#define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */ -#define FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */ -#define FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */ -#define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */ -#define FIX_3_072711026 ((INT32) 25172) /* FIX(3.072711026) */ -#else -#define FIX_0_298631336 FIX(0.298631336) -#define FIX_0_390180644 FIX(0.390180644) -#define FIX_0_541196100 FIX(0.541196100) -#define FIX_0_765366865 FIX(0.765366865) -#define FIX_0_899976223 FIX(0.899976223) -#define FIX_1_175875602 FIX(1.175875602) -#define FIX_1_501321110 FIX(1.501321110) -#define FIX_1_847759065 FIX(1.847759065) -#define FIX_1_961570560 FIX(1.961570560) -#define FIX_2_053119869 FIX(2.053119869) -#define FIX_2_562915447 FIX(2.562915447) -#define FIX_3_072711026 FIX(3.072711026) -#endif - - -/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. - * For 8-bit samples with the recommended scaling, all the variable - * and constant values involved are no more than 16 bits wide, so a - * 16x16->32 bit multiply can be used instead of a full 32x32 multiply. - * For 12-bit samples, a full 32-bit multiplication will be needed. - */ - -#if BITS_IN_JSAMPLE == 8 -#define MULTIPLY(var,const) MULTIPLY16C16(var,const) -#else -#define MULTIPLY(var,const) ((var) * (const)) -#endif - - -/* - * Perform the forward DCT on one block of samples. - */ - -GLOBAL(void) -jpeg_fdct_islow (DCTELEM * data) -{ - INT32 tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; - INT32 tmp10, tmp11, tmp12, tmp13; - INT32 z1, z2, z3, z4, z5; - DCTELEM *dataptr; - int ctr; - SHIFT_TEMPS - - /* Pass 1: process rows. */ - /* Note results are scaled up by sqrt(8) compared to a true DCT; */ - /* furthermore, we scale the results by 2**PASS1_BITS. */ - - dataptr = data; - for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { - tmp0 = dataptr[0] + dataptr[7]; - tmp7 = dataptr[0] - dataptr[7]; - tmp1 = dataptr[1] + dataptr[6]; - tmp6 = dataptr[1] - dataptr[6]; - tmp2 = dataptr[2] + dataptr[5]; - tmp5 = dataptr[2] - dataptr[5]; - tmp3 = dataptr[3] + dataptr[4]; - tmp4 = dataptr[3] - dataptr[4]; - - /* Even part per LL&M figure 1 --- note that published figure is faulty; - * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". - */ - - tmp10 = tmp0 + tmp3; - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - dataptr[0] = (DCTELEM) ((tmp10 + tmp11) << PASS1_BITS); - dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS); - - z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); - dataptr[2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865), - CONST_BITS-PASS1_BITS); - dataptr[6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065), - CONST_BITS-PASS1_BITS); - - /* Odd part per figure 8 --- note paper omits factor of sqrt(2). - * cK represents cos(K*pi/16). - * i0..i3 in the paper are tmp4..tmp7 here. - */ - - z1 = tmp4 + tmp7; - z2 = tmp5 + tmp6; - z3 = tmp4 + tmp6; - z4 = tmp5 + tmp7; - z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */ - - tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ - tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ - tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ - tmp7 = MULTIPLY(tmp7, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ - z1 = MULTIPLY(z1, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ - z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ - z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ - z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ - - z3 += z5; - z4 += z5; - - dataptr[7] = (DCTELEM) DESCALE(tmp4 + z1 + z3, CONST_BITS-PASS1_BITS); - dataptr[5] = (DCTELEM) DESCALE(tmp5 + z2 + z4, CONST_BITS-PASS1_BITS); - dataptr[3] = (DCTELEM) DESCALE(tmp6 + z2 + z3, CONST_BITS-PASS1_BITS); - dataptr[1] = (DCTELEM) DESCALE(tmp7 + z1 + z4, CONST_BITS-PASS1_BITS); - - dataptr += DCTSIZE; /* advance pointer to next row */ - } - - /* Pass 2: process columns. - * We remove the PASS1_BITS scaling, but leave the results scaled up - * by an overall factor of 8. - */ - - dataptr = data; - for (ctr = DCTSIZE-1; ctr >= 0; ctr--) { - tmp0 = dataptr[DCTSIZE*0] + dataptr[DCTSIZE*7]; - tmp7 = dataptr[DCTSIZE*0] - dataptr[DCTSIZE*7]; - tmp1 = dataptr[DCTSIZE*1] + dataptr[DCTSIZE*6]; - tmp6 = dataptr[DCTSIZE*1] - dataptr[DCTSIZE*6]; - tmp2 = dataptr[DCTSIZE*2] + dataptr[DCTSIZE*5]; - tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5]; - tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4]; - tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4]; - - /* Even part per LL&M figure 1 --- note that published figure is faulty; - * rotator "sqrt(2)*c1" should be "sqrt(2)*c6". - */ - - tmp10 = tmp0 + tmp3; - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS); - dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS); - - z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100); - dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865), - CONST_BITS+PASS1_BITS); - dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065), - CONST_BITS+PASS1_BITS); - - /* Odd part per figure 8 --- note paper omits factor of sqrt(2). - * cK represents cos(K*pi/16). - * i0..i3 in the paper are tmp4..tmp7 here. - */ - - z1 = tmp4 + tmp7; - z2 = tmp5 + tmp6; - z3 = tmp4 + tmp6; - z4 = tmp5 + tmp7; - z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */ - - tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ - tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ - tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ - tmp7 = MULTIPLY(tmp7, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ - z1 = MULTIPLY(z1, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ - z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ - z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ - z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ - - z3 += z5; - z4 += z5; - - dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp4 + z1 + z3, - CONST_BITS+PASS1_BITS); - dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp5 + z2 + z4, - CONST_BITS+PASS1_BITS); - dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp6 + z2 + z3, - CONST_BITS+PASS1_BITS); - dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp7 + z1 + z4, - CONST_BITS+PASS1_BITS); - - dataptr++; /* advance pointer to next column */ - } -} - -#endif /* DCT_ISLOW_SUPPORTED */ diff --git a/project/jni/jpeg/jidctflt.c b/project/jni/jpeg/jidctflt.c deleted file mode 100644 index 0188ce3df..000000000 --- a/project/jni/jpeg/jidctflt.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - * jidctflt.c - * - * Copyright (C) 1994-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a floating-point implementation of the - * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine - * must also perform dequantization of the input coefficients. - * - * This implementation should be more accurate than either of the integer - * IDCT implementations. However, it may not give the same results on all - * machines because of differences in roundoff behavior. Speed will depend - * on the hardware's floating point capacity. - * - * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT - * on each row (or vice versa, but it's more convenient to emit a row at - * a time). Direct algorithms are also available, but they are much more - * complex and seem not to be any faster when reduced to code. - * - * This implementation is based on Arai, Agui, and Nakajima's algorithm for - * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in - * Japanese, but the algorithm is described in the Pennebaker & Mitchell - * JPEG textbook (see REFERENCES section in file README). The following code - * is based directly on figure 4-8 in P&M. - * While an 8-point DCT cannot be done in less than 11 multiplies, it is - * possible to arrange the computation so that many of the multiplies are - * simple scalings of the final outputs. These multiplies can then be - * folded into the multiplications or divisions by the JPEG quantization - * table entries. The AA&N method leaves only 5 multiplies and 29 adds - * to be done in the DCT itself. - * The primary disadvantage of this method is that with a fixed-point - * implementation, accuracy is lost due to imprecise representation of the - * scaled quantization values. However, that problem does not arise if - * we use floating point arithmetic. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef DCT_FLOAT_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* Dequantize a coefficient by multiplying it by the multiplier-table - * entry; produce a float result. - */ - -#define DEQUANTIZE(coef,quantval) (((FAST_FLOAT) (coef)) * (quantval)) - - -/* - * Perform dequantization and inverse DCT on one block of coefficients. - */ - -GLOBAL(void) -jpeg_idct_float (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - FAST_FLOAT tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; - FAST_FLOAT tmp10, tmp11, tmp12, tmp13; - FAST_FLOAT z5, z10, z11, z12, z13; - JCOEFPTR inptr; - FLOAT_MULT_TYPE * quantptr; - FAST_FLOAT * wsptr; - JSAMPROW outptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); - int ctr; - FAST_FLOAT workspace[DCTSIZE2]; /* buffers data between passes */ - SHIFT_TEMPS - - /* Pass 1: process columns from input, store into work array. */ - - inptr = coef_block; - quantptr = (FLOAT_MULT_TYPE *) compptr->dct_table; - wsptr = workspace; - for (ctr = DCTSIZE; ctr > 0; ctr--) { - /* Due to quantization, we will usually find that many of the input - * coefficients are zero, especially the AC terms. We can exploit this - * by short-circuiting the IDCT calculation for any column in which all - * the AC terms are zero. In that case each output is equal to the - * DC coefficient (with scale factor as needed). - * With typical images and quantization tables, half or more of the - * column DCT calculations can be simplified this way. - */ - - if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && - inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && - inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && - inptr[DCTSIZE*7] == 0) { - /* AC terms all zero */ - FAST_FLOAT dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - - wsptr[DCTSIZE*0] = dcval; - wsptr[DCTSIZE*1] = dcval; - wsptr[DCTSIZE*2] = dcval; - wsptr[DCTSIZE*3] = dcval; - wsptr[DCTSIZE*4] = dcval; - wsptr[DCTSIZE*5] = dcval; - wsptr[DCTSIZE*6] = dcval; - wsptr[DCTSIZE*7] = dcval; - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - continue; - } - - /* Even part */ - - tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); - tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); - tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); - - tmp10 = tmp0 + tmp2; /* phase 3 */ - tmp11 = tmp0 - tmp2; - - tmp13 = tmp1 + tmp3; /* phases 5-3 */ - tmp12 = (tmp1 - tmp3) * ((FAST_FLOAT) 1.414213562) - tmp13; /* 2*c4 */ - - tmp0 = tmp10 + tmp13; /* phase 2 */ - tmp3 = tmp10 - tmp13; - tmp1 = tmp11 + tmp12; - tmp2 = tmp11 - tmp12; - - /* Odd part */ - - tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); - tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); - tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); - tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); - - z13 = tmp6 + tmp5; /* phase 6 */ - z10 = tmp6 - tmp5; - z11 = tmp4 + tmp7; - z12 = tmp4 - tmp7; - - tmp7 = z11 + z13; /* phase 5 */ - tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); /* 2*c4 */ - - z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */ - tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */ - tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */ - - tmp6 = tmp12 - tmp7; /* phase 2 */ - tmp5 = tmp11 - tmp6; - tmp4 = tmp10 + tmp5; - - wsptr[DCTSIZE*0] = tmp0 + tmp7; - wsptr[DCTSIZE*7] = tmp0 - tmp7; - wsptr[DCTSIZE*1] = tmp1 + tmp6; - wsptr[DCTSIZE*6] = tmp1 - tmp6; - wsptr[DCTSIZE*2] = tmp2 + tmp5; - wsptr[DCTSIZE*5] = tmp2 - tmp5; - wsptr[DCTSIZE*4] = tmp3 + tmp4; - wsptr[DCTSIZE*3] = tmp3 - tmp4; - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - } - - /* Pass 2: process rows from work array, store into output array. */ - /* Note that we must descale the results by a factor of 8 == 2**3. */ - - wsptr = workspace; - for (ctr = 0; ctr < DCTSIZE; ctr++) { - outptr = output_buf[ctr] + output_col; - /* Rows of zeroes can be exploited in the same way as we did with columns. - * However, the column calculation has created many nonzero AC terms, so - * the simplification applies less often (typically 5% to 10% of the time). - * And testing floats for zero is relatively expensive, so we don't bother. - */ - - /* Even part */ - - tmp10 = wsptr[0] + wsptr[4]; - tmp11 = wsptr[0] - wsptr[4]; - - tmp13 = wsptr[2] + wsptr[6]; - tmp12 = (wsptr[2] - wsptr[6]) * ((FAST_FLOAT) 1.414213562) - tmp13; - - tmp0 = tmp10 + tmp13; - tmp3 = tmp10 - tmp13; - tmp1 = tmp11 + tmp12; - tmp2 = tmp11 - tmp12; - - /* Odd part */ - - z13 = wsptr[5] + wsptr[3]; - z10 = wsptr[5] - wsptr[3]; - z11 = wsptr[1] + wsptr[7]; - z12 = wsptr[1] - wsptr[7]; - - tmp7 = z11 + z13; - tmp11 = (z11 - z13) * ((FAST_FLOAT) 1.414213562); - - z5 = (z10 + z12) * ((FAST_FLOAT) 1.847759065); /* 2*c2 */ - tmp10 = ((FAST_FLOAT) 1.082392200) * z12 - z5; /* 2*(c2-c6) */ - tmp12 = ((FAST_FLOAT) -2.613125930) * z10 + z5; /* -2*(c2+c6) */ - - tmp6 = tmp12 - tmp7; - tmp5 = tmp11 - tmp6; - tmp4 = tmp10 + tmp5; - - /* Final output stage: scale down by a factor of 8 and range-limit */ - - outptr[0] = range_limit[(int) DESCALE((INT32) (tmp0 + tmp7), 3) - & RANGE_MASK]; - outptr[7] = range_limit[(int) DESCALE((INT32) (tmp0 - tmp7), 3) - & RANGE_MASK]; - outptr[1] = range_limit[(int) DESCALE((INT32) (tmp1 + tmp6), 3) - & RANGE_MASK]; - outptr[6] = range_limit[(int) DESCALE((INT32) (tmp1 - tmp6), 3) - & RANGE_MASK]; - outptr[2] = range_limit[(int) DESCALE((INT32) (tmp2 + tmp5), 3) - & RANGE_MASK]; - outptr[5] = range_limit[(int) DESCALE((INT32) (tmp2 - tmp5), 3) - & RANGE_MASK]; - outptr[4] = range_limit[(int) DESCALE((INT32) (tmp3 + tmp4), 3) - & RANGE_MASK]; - outptr[3] = range_limit[(int) DESCALE((INT32) (tmp3 - tmp4), 3) - & RANGE_MASK]; - - wsptr += DCTSIZE; /* advance pointer to next row */ - } -} - -#endif /* DCT_FLOAT_SUPPORTED */ diff --git a/project/jni/jpeg/jidctfst.S b/project/jni/jpeg/jidctfst.S deleted file mode 100644 index 34e1c24fd..000000000 --- a/project/jni/jpeg/jidctfst.S +++ /dev/null @@ -1,476 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include - - .text - .align - - .global jpeg_idct_ifast - .func jpeg_idct_ifast - -// NOTE: sb=r9, fp=r11 ip=r12, sp=r13, lr=r14, pc=r15 - -// jpeg_idct_ifast (j_decompress_ptr cinfo, -// jpeg_component_info * compptr, -// short* coef_block, -// unsigned char* output_buf, -// int output_col) - -#define local_TMP0123 sp -#define local_TMP0 [sp, #0] -#define local_TMP1 [sp, #4] -#define local_TMP2 [sp, #8] -#define local_TMP3 [sp, #12] -#define local_RANGE_TABLE [sp, #16] -#define local_OUTPUT_COL [sp, #20] -#define local_OUTPUT_BUF [sp, #24] -#define local_UNUSED [sp, #28] -#define off_WORKSPACE 32 -#define local_WORKSPACE [sp, #offWORKSPACE] -#define local_SIZE (off_WORKSPACE + 8*8*4) - -#define off_DECOMPRESS_range_limit_base 324 -#define off_COMPINFO_quanttable 80 - -#define DCTSIZE 8 -#define VY(x) ((x)*DCTSIZE*2) -#define QY(x) ((x)*DCTSIZE*4) - -#define VX(x) ((x)*2) -#define QX(x) ((x)*4) - -#define FIX_1_414213562 #362 -#define FIX_1_082392200 #277 -#define FIX_1_847759065 #473 -#define FIX_2_613125930 #669 - -#define RANGE_MASK 1023 - - - -jpeg_idct_ifast: - PLD (r2, #0) - stmdb sp!, {r4,r5, r6,r7, r8,r9, r10,r11, r12,lr} - ldr r4, [sp, #4*10] - sub sp, #local_SIZE - - ldr r10,[r1, #off_COMPINFO_quanttable] // r10 = quanttable - str r4, local_OUTPUT_COL - str r3, local_OUTPUT_BUF - ldr r5, [r0, #off_DECOMPRESS_range_limit_base] - add r5, r5, #128 - str r5, local_RANGE_TABLE - mov fp, r2 // fp = coef_block - add ip, sp, #off_WORKSPACE - -VLoopTail: - ldrsh r0, [fp, #VY(0)] - ldrsh r1, [fp, #VY(1)] - ldrsh r2, [fp, #VY(2)] - ldrsh r3, [fp, #VY(3)] - ldrsh r4, [fp, #VY(4)] - ldrsh r5, [fp, #VY(5)] - ldrsh r6, [fp, #VY(6)] - ldrsh r7, [fp, #VY(7)] - - cmp r1, #0 - orreqs r8, r2, r3 - orreqs r8, r4, r5 - orreqs r8, r6, r7 - beq VLoopHeadZero - -VLoopHead: - // tmp0 = DEQUANTIZE(in[DCTSIZE*0], quant[DCTSIZE*0] (r0) - // tmp2 = DEQUANTIZE(in[DCTSIZE*4], quant[DCTSIZE*4] (r4) - // tmp1 = DEQUANTIZE(in[DCTSIZE*2], quant[DCTSIZE*2] (r2) - // tmp3 = DEQUANTIZE(in[DCTSIZE*6], quant[DCTSIZE*6] (r6) - // tmp10 = tmp0 + tmp2 (r0) - // tmp11 = tmp0 - tmp2 (r4) - - ldr r9, [r10, #QY(4)] - ldr r8, [r10, #QY(0)] -#if __ARM_HAVE_HALFWORD_MULTIPLY - smulbb r4, r9, r4 - smlabb r0, r8, r0, r4 -#else - mul r4, r9, r4 - mul r0, r8, r0 - add r0, r4 -#endif - ldr r9, [r10, #QY(6)] - ldr r8, [r10, #QY(2)] - sub r4, r0, r4, lsl #1 -#if __ARM_HAVE_HALFWORD_MULTIPLY - smulbb r6, r9, r6 - smlabb r2, r8, r2, r6 -#else - mul r6, r9, r6 - mul r2, r8, r2 - add r2, r6 -#endif - - // tmp13 = tmp1 + tmp3 (r2) - // tmp12 = MULTIPLY(tmp1 - tmp3, FIX_1_414213562) - tmp13 (r6) - // FIX_1_4142... = 362 = 45*8 + 2 - sub r6, r2, r6, lsl #1 - mov r8, #360 - add r8, r8, #2 - mul r9, r6, r8 - - // tmp0 = tmp10 + tmp13; (r0) - // tmp3 = tmp10 - tmp13; (r8) - // tmp1 = tmp11 + tmp12; (r4) - // tmp2 = tmp11 - tmp12; (r6) - add r0, r0, r2 - rsb r6, r2, r9, asr #8 - sub r8, r0, r2, lsl #1 - add r4, r4, r6 - sub r6, r4, r6, lsl #1 - - stmia local_TMP0123, {r0, r4, r6, r8} - - // NOTE: be sure to not user r0,r4,r6,r8 soon after stm above - - // odd part - // tmp4 = DEQUANTIZE( in[DCTSIZE*1], quant[DCTSIZE*1] ) (r1) - // tmp6 = DEQUANTIZE( in[DCTSIZE*5], quant[DCTSIZE*5] ) (r5) - // tmp5 = DEQUANTIZE( in[DCTSIZE*3], quant[DCTSIZE*3] ) (r3) - // tmp7 = DEQUANTIZE( in[DCTSIZE*7], quant[DCTSIZE*7] ) (r7) - // z13 = tmp6 + tmp5; (r0) - // z10 = tmp6 - tmp5; (r2) - // z11 = tmp4 + tmp7; (r4) - // z12 = tmp4 - tmp7; (r6) - - ldr r2, [r10, #QY(1)] - ldr r9, [r10, #QY(5)] -#if __ARM_HAVE_HALFWORD_MULTIPLY - smulbb r1, r2, r1 -#else - mul r1, r2, r1 -#endif - ldr r2, [r10, #QY(3)] -#if __ARM_HAVE_HALFWORD_MULTIPLY - smulbb r5, r9, r5 -#else - mul r5, r9, r5 -#endif - ldr r9, [r10, #QY(7)] -#if __ARM_HAVE_HALFWORD_MULTIPLY - smlabb r0, r2, r3, r5 - smlabb r4, r9, r7, r1 -#else - mul r0, r2, r3 - add r0, r5 - mul r4, r9, r7 - add r4, r1 -#endif - rsb r2, r0, r5, lsl #1 - rsb r6, r4, r1, lsl #1 - - // tmp7 = z11 + z13; (r7) - // tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); (r1) - // FIX_... = 360 + 2 - add r7, r4, r0 - sub r1, r4, r0 - mov r8, #360 - add r8, r8, #2 - mul r1, r8, r1 - - // z5 = MULTIPLY(z10 + z12, FIX_1_847759065); (r8) - // tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; (r0) - // tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; (r2) - // FIX_1_8477... = 473 = 472 + 1 - // FIX_1_082... = 277 = 276 + 1 - // FIX_2_... = 669 = 668 + 1 - add r8, r2, r6 - mov r9, #472 - mla r8, r9, r8, r8 - mov r9, #276 - mla r0, r6, r9, r6 - mov r9, #668 - mla r2, r9, r2, r2 - sub r0, r0, r8 - rsb r2, r2, r8 - - // tmp6 = tmp12 - tmp7; (r6) - // tmp5 = tmp11 - tmp6; (r5) - // tmp4 = tmp10 + tmp5; (r4) - rsb r6, r7, r2, asr #8 - rsb r5, r6, r1, asr #8 - add r4, r5, r0, asr #8 - - ldmia local_TMP0123, {r0, r1, r2, r3} - - // wsptr[DCTSIZE*0] = (int) (tmp0 + tmp7); - // wsptr[DCTSIZE*7] = (int) (tmp0 - tmp7); - // wsptr[DCTSIZE*1] = (int) (tmp1 + tmp6); - // wsptr[DCTSIZE*6] = (int) (tmp1 - tmp6); - // wsptr[DCTSIZE*2] = (int) (tmp2 + tmp5); - // wsptr[DCTSIZE*5] = (int) (tmp2 - tmp5); - // wsptr[DCTSIZE*4] = (int) (tmp3 + tmp4); - // wsptr[DCTSIZE*3] = (int) (tmp3 - tmp4); - - add r0, r0, r7 - sub r7, r0, r7, lsl #1 - add r1, r1, r6 - sub r6, r1, r6, lsl #1 - add r2, r2, r5 - sub r5, r2, r5, lsl #1 - sub r3, r3, r4 - add r4, r3, r4, lsl #1 - - str r0, [ip, #QY(0)] - str r1, [ip, #QY(1)] - str r2, [ip, #QY(2)] - str r3, [ip, #QY(3)] - str r4, [ip, #QY(4)] - str r5, [ip, #QY(5)] - str r6, [ip, #QY(6)] - str r7, [ip, #QY(7)] - - // inptr++; /* advance pointers to next column */ - // quantptr++; - // wsptr++; - add fp, fp, #2 - add r10, r10, #4 - add ip, ip, #4 - add r0, sp, #(off_WORKSPACE + 4*8) - cmp ip, r0 - bne VLoopTail - - - -HLoopStart: - // reset pointers - PLD (sp, #off_WORKSPACE) - add ip, sp, #off_WORKSPACE - ldr r10, local_RANGE_TABLE - -HLoopTail: - // output = *output_buf++ + output_col - ldr r0, local_OUTPUT_BUF - ldr r1, local_OUTPUT_COL - ldr r2, [r0], #4 - str r0, local_OUTPUT_BUF - add fp, r2, r1 - - PLD (ip, #32) - ldmia ip!, {r0-r7} - - cmp r1, #0 - orreqs r8, r2, r3 - orreqs r8, r4, r5 - orreqs r8, r6, r7 - beq HLoopTailZero - -HLoopHead: - // tmp10 = ((DCTELEM) wsptr[0] + (DCTELEM) wsptr[4]); (r0) - // tmp11 = ((DCTELEM) wsptr[0] - (DCTELEM) wsptr[4]); (r4) - add r0, r0, r4 - sub r4, r0, r4, lsl #1 - - // tmp13 = ((DCTELEM) wsptr[2] + (DCTELEM) wsptr[6]); (r2) - // tmp12 = MULTIPLY((DCTELEM) wsptr[2] - (DCTELEM) wsptr[6], FIX_1_414213562) - tmp13; (r6) - // FIX_... = 360 + 2 - add r2, r2, r6 - sub r6, r2, r6, lsl #1 - mov r8, #360 - add r8, r8, #2 - mul r6, r8, r6 - - // tmp0 = tmp10 + tmp13; (r0) - // tmp3 = tmp10 - tmp13; (r8) - // tmp1 = tmp11 + tmp12; (r4) - // tmp2 = tmp11 - tmp12; (r6) - add r0, r0, r2 - rsb r6, r2, r6, asr #8 - sub r8, r0, r2, lsl #1 - add r4, r4, r6 - sub r6, r4, r6, lsl #1 - - stmia local_TMP0123, {r0, r4, r6, r8} - - // Odd part - - // z13 = (DCTELEM) wsptr[5] + (DCTELEM) wsptr[3]; (r0) - // z10 = (DCTELEM) wsptr[5] - (DCTELEM) wsptr[3]; (r2) - // z11 = (DCTELEM) wsptr[1] + (DCTELEM) wsptr[7]; (r4) - // z12 = (DCTELEM) wsptr[1] - (DCTELEM) wsptr[7]; (r6) - add r0, r5, r3 - sub r2, r5, r3 - add r4, r1, r7 - sub r6, r1, r7 - - // tmp7 = z11 + z13; (r7) - // tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); (r1) - // FIX_... = 360 + 2 - add r7, r4, r0 - sub r1, r4, r0 - mov r8, #360 - add r8, r8, #2 - mul r1, r8, r1 - - // z5 = MULTIPLY(z10 + z12, FIX_1_847759065); (r8) - // tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; (r0) - // tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; (r2) - // FIX_1_8477... = 473 = 472 + 1 - // FIX_1_082... = 277 = 276 + 1 - // FIX_2_... = 669 = 668 + 1 - add r8, r2, r6 - mov r9, #472 - mla r8, r9, r8, r8 - mov r9, #276 - mla r0, r6, r9, r6 - mov r9, #668 - mla r2, r9, r2, r2 - sub r0, r0, r8 - sub r2, r8, r2 - - // tmp6 = tmp12 - tmp7; (r6) - // tmp5 = tmp11 - tmp6; (r5) - // tmp4 = tmp10 + tmp5; (r4) - rsb r6, r7, r2, asr #8 - rsb r5, r6, r1, asr #8 - add r4, r5, r0, asr #8 - - ldmia local_TMP0123, {r0, r1, r2, r3} - - // outptr[0] = range_limit[IDESCALE(tmp0 + tmp7, PASS1_BITS+3) & RANGE_MASK]; - // outptr[7] = range_limit[IDESCALE(tmp0 - tmp7, PASS1_BITS+3) & RANGE_MASK]; - // outptr[1] = range_limit[IDESCALE(tmp1 + tmp6, PASS1_BITS+3) & RANGE_MASK]; - // outptr[6] = range_limit[IDESCALE(tmp1 - tmp6, PASS1_BITS+3) & RANGE_MASK]; - // outptr[2] = range_limit[IDESCALE(tmp2 + tmp5, PASS1_BITS+3) & RANGE_MASK]; - // outptr[5] = range_limit[IDESCALE(tmp2 - tmp5, PASS1_BITS+3) & RANGE_MASK]; - // outptr[4] = range_limit[IDESCALE(tmp3 + tmp4, PASS1_BITS+3) & RANGE_MASK]; - // outptr[3] = range_limit[IDESCALE(tmp3 - tmp4, PASS1_BITS+3) & RANGE_MASK]; - - mov r8, #128 - add r0, r0, r7 - sub r7, r0, r7, lsl #1 - add r0, r8, r0, asr #5 - add r7, r8, r7, asr #5 - add r1, r1, r6 - sub r6, r1, r6, lsl #1 - add r1, r8, r1, asr #5 - add r6, r8, r6, asr #5 - add r2, r2, r5 - sub r5, r2, r5, lsl #1 - add r2, r8, r2, asr #5 - add r5, r8, r5, asr #5 - sub r3, r3, r4 - add r4, r3, r4, lsl #1 - add r3, r8, r3, asr #5 - add r4, r8, r4, asr #5 - -#if __ARM_ARCH__ >= 6 - usat r0, #8, r0 - usat r1, #8, r1 - usat r2, #8, r2 - usat r3, #8, r3 - usat r4, #8, r4 - usat r5, #8, r5 - usat r6, #8, r6 - usat r7, #8, r7 -#else - cmp r0, #255 - mvnhi r0, r0, asr #31 - andhi r0, #255 - cmp r7, #255 - mvnhi r7, r7, asr #31 - cmp r1, #255 - mvnhi r1, r1, asr #31 - andhi r1, #255 - cmp r6, #255 - mvnhi r6, r6, asr #31 - andhi r6, #255 - cmp r2, #255 - mvnhi r2, r2, asr #31 - andhi r2, #255 - cmp r5, #255 - mvnhi r5, r5, asr #31 - andhi r5, #255 - cmp r3, #255 - mvnhi r3, r3, asr #31 - cmp r4, #255 - mvnhi r4, r4, asr #31 - andhi r4, #255 -#endif - - // r3 r2 r1 r0 - orr r0, r0, r1, lsl #8 - orr r0, r0, r2, lsl #16 - orr r0, r0, r3, lsl #24 - - // r7 r6 r5 r4 - orr r1, r4, r5, lsl #8 - orr r1, r1, r6, lsl #16 - orr r1, r1, r7, lsl #24 - stmia fp, {r0, r1} - - add r0, sp, #(off_WORKSPACE + 8*8*4) - cmp ip, r0 - bne HLoopTail - -Exit: - add sp, sp, #local_SIZE - ldmia sp!, {r4,r5, r6,r7, r8,r9, r10,r11, r12,lr} - bx lr - - -VLoopHeadZero: -// ok, all AC coefficients are 0 - ldr r1, [r10, #QY(0)] - add fp, fp, #2 - add r10, r10, #4 - mul r0, r1, r0 - str r0, [ip, #QY(0)] - str r0, [ip, #QY(1)] - str r0, [ip, #QY(2)] - str r0, [ip, #QY(3)] - str r0, [ip, #QY(4)] - str r0, [ip, #QY(5)] - str r0, [ip, #QY(6)] - str r0, [ip, #QY(7)] - add ip, ip, #4 - add r0, sp, #(off_WORKSPACE + 4*8) - cmp ip, r0 - beq HLoopStart - b VLoopTail - -HLoopTailZero: - mov r0, r0, asr #5 - add r0, #128 - -#if __ARM_ARCH__ >= 6 - usat r0, #8, r0 -#else - cmp r0, #255 - mvnhi r0, r0, asr #31 - andhi r0, r0, #255 -#endif - - orr r0, r0, lsl #8 - orr r0, r0, lsl #16 - mov r1, r0 - stmia fp, {r0, r1} - - add r0, sp, #(off_WORKSPACE + 64*4) - cmp ip, r0 - beq Exit - b HLoopTail - - .endfunc diff --git a/project/jni/jpeg/jidctfst.c b/project/jni/jpeg/jidctfst.c deleted file mode 100644 index dba4216fb..000000000 --- a/project/jni/jpeg/jidctfst.c +++ /dev/null @@ -1,368 +0,0 @@ -/* - * jidctfst.c - * - * Copyright (C) 1994-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a fast, not so accurate integer implementation of the - * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine - * must also perform dequantization of the input coefficients. - * - * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT - * on each row (or vice versa, but it's more convenient to emit a row at - * a time). Direct algorithms are also available, but they are much more - * complex and seem not to be any faster when reduced to code. - * - * This implementation is based on Arai, Agui, and Nakajima's algorithm for - * scaled DCT. Their original paper (Trans. IEICE E-71(11):1095) is in - * Japanese, but the algorithm is described in the Pennebaker & Mitchell - * JPEG textbook (see REFERENCES section in file README). The following code - * is based directly on figure 4-8 in P&M. - * While an 8-point DCT cannot be done in less than 11 multiplies, it is - * possible to arrange the computation so that many of the multiplies are - * simple scalings of the final outputs. These multiplies can then be - * folded into the multiplications or divisions by the JPEG quantization - * table entries. The AA&N method leaves only 5 multiplies and 29 adds - * to be done in the DCT itself. - * The primary disadvantage of this method is that with fixed-point math, - * accuracy is lost due to imprecise representation of the scaled - * quantization values. The smaller the quantization table entry, the less - * precise the scaled value, so this implementation does worse with high- - * quality-setting files than with low-quality ones. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef DCT_IFAST_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* Scaling decisions are generally the same as in the LL&M algorithm; - * see jidctint.c for more details. However, we choose to descale - * (right shift) multiplication products as soon as they are formed, - * rather than carrying additional fractional bits into subsequent additions. - * This compromises accuracy slightly, but it lets us save a few shifts. - * More importantly, 16-bit arithmetic is then adequate (for 8-bit samples) - * everywhere except in the multiplications proper; this saves a good deal - * of work on 16-bit-int machines. - * - * The dequantized coefficients are not integers because the AA&N scaling - * factors have been incorporated. We represent them scaled up by PASS1_BITS, - * so that the first and second IDCT rounds have the same input scaling. - * For 8-bit JSAMPLEs, we choose IFAST_SCALE_BITS = PASS1_BITS so as to - * avoid a descaling shift; this compromises accuracy rather drastically - * for small quantization table entries, but it saves a lot of shifts. - * For 12-bit JSAMPLEs, there's no hope of using 16x16 multiplies anyway, - * so we use a much larger scaling factor to preserve accuracy. - * - * A final compromise is to represent the multiplicative constants to only - * 8 fractional bits, rather than 13. This saves some shifting work on some - * machines, and may also reduce the cost of multiplication (since there - * are fewer one-bits in the constants). - */ - -#if BITS_IN_JSAMPLE == 8 -#define CONST_BITS 8 -#define PASS1_BITS 2 -#else -#define CONST_BITS 8 -#define PASS1_BITS 1 /* lose a little precision to avoid overflow */ -#endif - -/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus - * causing a lot of useless floating-point operations at run time. - * To get around this we use the following pre-calculated constants. - * If you change CONST_BITS you may want to add appropriate values. - * (With a reasonable C compiler, you can just rely on the FIX() macro...) - */ - -#if CONST_BITS == 8 -#define FIX_1_082392200 ((INT32) 277) /* FIX(1.082392200) */ -#define FIX_1_414213562 ((INT32) 362) /* FIX(1.414213562) */ -#define FIX_1_847759065 ((INT32) 473) /* FIX(1.847759065) */ -#define FIX_2_613125930 ((INT32) 669) /* FIX(2.613125930) */ -#else -#define FIX_1_082392200 FIX(1.082392200) -#define FIX_1_414213562 FIX(1.414213562) -#define FIX_1_847759065 FIX(1.847759065) -#define FIX_2_613125930 FIX(2.613125930) -#endif - - -/* We can gain a little more speed, with a further compromise in accuracy, - * by omitting the addition in a descaling shift. This yields an incorrectly - * rounded result half the time... - */ - -#ifndef USE_ACCURATE_ROUNDING -#undef DESCALE -#define DESCALE(x,n) RIGHT_SHIFT(x, n) -#endif - - -/* Multiply a DCTELEM variable by an INT32 constant, and immediately - * descale to yield a DCTELEM result. - */ - -#define MULTIPLY(var,const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS)) - - -/* Dequantize a coefficient by multiplying it by the multiplier-table - * entry; produce a DCTELEM result. For 8-bit data a 16x16->16 - * multiplication will do. For 12-bit data, the multiplier table is - * declared INT32, so a 32-bit multiply will be used. - */ - -#if BITS_IN_JSAMPLE == 8 -#define DEQUANTIZE(coef,quantval) (((IFAST_MULT_TYPE) (coef)) * (quantval)) -#else -#define DEQUANTIZE(coef,quantval) \ - DESCALE((coef)*(quantval), IFAST_SCALE_BITS-PASS1_BITS) -#endif - - -/* Like DESCALE, but applies to a DCTELEM and produces an int. - * We assume that int right shift is unsigned if INT32 right shift is. - */ - -#ifdef RIGHT_SHIFT_IS_UNSIGNED -#define ISHIFT_TEMPS DCTELEM ishift_temp; -#if BITS_IN_JSAMPLE == 8 -#define DCTELEMBITS 16 /* DCTELEM may be 16 or 32 bits */ -#else -#define DCTELEMBITS 32 /* DCTELEM must be 32 bits */ -#endif -#define IRIGHT_SHIFT(x,shft) \ - ((ishift_temp = (x)) < 0 ? \ - (ishift_temp >> (shft)) | ((~((DCTELEM) 0)) << (DCTELEMBITS-(shft))) : \ - (ishift_temp >> (shft))) -#else -#define ISHIFT_TEMPS -#define IRIGHT_SHIFT(x,shft) ((x) >> (shft)) -#endif - -#ifdef USE_ACCURATE_ROUNDING -#define IDESCALE(x,n) ((int) IRIGHT_SHIFT((x) + (1 << ((n)-1)), n)) -#else -#define IDESCALE(x,n) ((int) IRIGHT_SHIFT(x, n)) -#endif - - -/* - * Perform dequantization and inverse DCT on one block of coefficients. - */ - -GLOBAL(void) -jpeg_idct_ifast (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - DCTELEM tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7; - DCTELEM tmp10, tmp11, tmp12, tmp13; - DCTELEM z5, z10, z11, z12, z13; - JCOEFPTR inptr; - IFAST_MULT_TYPE * quantptr; - int * wsptr; - JSAMPROW outptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); - int ctr; - int workspace[DCTSIZE2]; /* buffers data between passes */ - SHIFT_TEMPS /* for DESCALE */ - ISHIFT_TEMPS /* for IDESCALE */ - - /* Pass 1: process columns from input, store into work array. */ - - inptr = coef_block; - quantptr = (IFAST_MULT_TYPE *) compptr->dct_table; - wsptr = workspace; - for (ctr = DCTSIZE; ctr > 0; ctr--) { - /* Due to quantization, we will usually find that many of the input - * coefficients are zero, especially the AC terms. We can exploit this - * by short-circuiting the IDCT calculation for any column in which all - * the AC terms are zero. In that case each output is equal to the - * DC coefficient (with scale factor as needed). - * With typical images and quantization tables, half or more of the - * column DCT calculations can be simplified this way. - */ - - if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && - inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && - inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && - inptr[DCTSIZE*7] == 0) { - /* AC terms all zero */ - int dcval = (int) DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - - wsptr[DCTSIZE*0] = dcval; - wsptr[DCTSIZE*1] = dcval; - wsptr[DCTSIZE*2] = dcval; - wsptr[DCTSIZE*3] = dcval; - wsptr[DCTSIZE*4] = dcval; - wsptr[DCTSIZE*5] = dcval; - wsptr[DCTSIZE*6] = dcval; - wsptr[DCTSIZE*7] = dcval; - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - continue; - } - - /* Even part */ - - tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - tmp1 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); - tmp2 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); - tmp3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); - - tmp10 = tmp0 + tmp2; /* phase 3 */ - tmp11 = tmp0 - tmp2; - - tmp13 = tmp1 + tmp3; /* phases 5-3 */ - tmp12 = MULTIPLY(tmp1 - tmp3, FIX_1_414213562) - tmp13; /* 2*c4 */ - - tmp0 = tmp10 + tmp13; /* phase 2 */ - tmp3 = tmp10 - tmp13; - tmp1 = tmp11 + tmp12; - tmp2 = tmp11 - tmp12; - - /* Odd part */ - - tmp4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); - tmp5 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); - tmp6 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); - tmp7 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); - - z13 = tmp6 + tmp5; /* phase 6 */ - z10 = tmp6 - tmp5; - z11 = tmp4 + tmp7; - z12 = tmp4 - tmp7; - - tmp7 = z11 + z13; /* phase 5 */ - tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); /* 2*c4 */ - - z5 = MULTIPLY(z10 + z12, FIX_1_847759065); /* 2*c2 */ - tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; /* 2*(c2-c6) */ - tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; /* -2*(c2+c6) */ - - tmp6 = tmp12 - tmp7; /* phase 2 */ - tmp5 = tmp11 - tmp6; - tmp4 = tmp10 + tmp5; - - wsptr[DCTSIZE*0] = (int) (tmp0 + tmp7); - wsptr[DCTSIZE*7] = (int) (tmp0 - tmp7); - wsptr[DCTSIZE*1] = (int) (tmp1 + tmp6); - wsptr[DCTSIZE*6] = (int) (tmp1 - tmp6); - wsptr[DCTSIZE*2] = (int) (tmp2 + tmp5); - wsptr[DCTSIZE*5] = (int) (tmp2 - tmp5); - wsptr[DCTSIZE*4] = (int) (tmp3 + tmp4); - wsptr[DCTSIZE*3] = (int) (tmp3 - tmp4); - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - } - - /* Pass 2: process rows from work array, store into output array. */ - /* Note that we must descale the results by a factor of 8 == 2**3, */ - /* and also undo the PASS1_BITS scaling. */ - - wsptr = workspace; - for (ctr = 0; ctr < DCTSIZE; ctr++) { - outptr = output_buf[ctr] + output_col; - /* Rows of zeroes can be exploited in the same way as we did with columns. - * However, the column calculation has created many nonzero AC terms, so - * the simplification applies less often (typically 5% to 10% of the time). - * On machines with very fast multiplication, it's possible that the - * test takes more time than it's worth. In that case this section - * may be commented out. - */ - -#ifndef NO_ZERO_ROW_TEST - if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 && - wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) { - /* AC terms all zero */ - JSAMPLE dcval = range_limit[IDESCALE(wsptr[0], PASS1_BITS+3) - & RANGE_MASK]; - - outptr[0] = dcval; - outptr[1] = dcval; - outptr[2] = dcval; - outptr[3] = dcval; - outptr[4] = dcval; - outptr[5] = dcval; - outptr[6] = dcval; - outptr[7] = dcval; - - wsptr += DCTSIZE; /* advance pointer to next row */ - continue; - } -#endif - - /* Even part */ - - tmp10 = ((DCTELEM) wsptr[0] + (DCTELEM) wsptr[4]); - tmp11 = ((DCTELEM) wsptr[0] - (DCTELEM) wsptr[4]); - - tmp13 = ((DCTELEM) wsptr[2] + (DCTELEM) wsptr[6]); - tmp12 = MULTIPLY((DCTELEM) wsptr[2] - (DCTELEM) wsptr[6], FIX_1_414213562) - - tmp13; - - tmp0 = tmp10 + tmp13; - tmp3 = tmp10 - tmp13; - tmp1 = tmp11 + tmp12; - tmp2 = tmp11 - tmp12; - - /* Odd part */ - - z13 = (DCTELEM) wsptr[5] + (DCTELEM) wsptr[3]; - z10 = (DCTELEM) wsptr[5] - (DCTELEM) wsptr[3]; - z11 = (DCTELEM) wsptr[1] + (DCTELEM) wsptr[7]; - z12 = (DCTELEM) wsptr[1] - (DCTELEM) wsptr[7]; - - tmp7 = z11 + z13; /* phase 5 */ - tmp11 = MULTIPLY(z11 - z13, FIX_1_414213562); /* 2*c4 */ - - z5 = MULTIPLY(z10 + z12, FIX_1_847759065); /* 2*c2 */ - tmp10 = MULTIPLY(z12, FIX_1_082392200) - z5; /* 2*(c2-c6) */ - tmp12 = MULTIPLY(z10, - FIX_2_613125930) + z5; /* -2*(c2+c6) */ - - tmp6 = tmp12 - tmp7; /* phase 2 */ - tmp5 = tmp11 - tmp6; - tmp4 = tmp10 + tmp5; - - /* Final output stage: scale down by a factor of 8 and range-limit */ - - outptr[0] = range_limit[IDESCALE(tmp0 + tmp7, PASS1_BITS+3) - & RANGE_MASK]; - outptr[7] = range_limit[IDESCALE(tmp0 - tmp7, PASS1_BITS+3) - & RANGE_MASK]; - outptr[1] = range_limit[IDESCALE(tmp1 + tmp6, PASS1_BITS+3) - & RANGE_MASK]; - outptr[6] = range_limit[IDESCALE(tmp1 - tmp6, PASS1_BITS+3) - & RANGE_MASK]; - outptr[2] = range_limit[IDESCALE(tmp2 + tmp5, PASS1_BITS+3) - & RANGE_MASK]; - outptr[5] = range_limit[IDESCALE(tmp2 - tmp5, PASS1_BITS+3) - & RANGE_MASK]; - outptr[4] = range_limit[IDESCALE(tmp3 + tmp4, PASS1_BITS+3) - & RANGE_MASK]; - outptr[3] = range_limit[IDESCALE(tmp3 - tmp4, PASS1_BITS+3) - & RANGE_MASK]; - - wsptr += DCTSIZE; /* advance pointer to next row */ - } -} - -#endif /* DCT_IFAST_SUPPORTED */ diff --git a/project/jni/jpeg/jidctint.c b/project/jni/jpeg/jidctint.c deleted file mode 100644 index a72b3207c..000000000 --- a/project/jni/jpeg/jidctint.c +++ /dev/null @@ -1,389 +0,0 @@ -/* - * jidctint.c - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a slow-but-accurate integer implementation of the - * inverse DCT (Discrete Cosine Transform). In the IJG code, this routine - * must also perform dequantization of the input coefficients. - * - * A 2-D IDCT can be done by 1-D IDCT on each column followed by 1-D IDCT - * on each row (or vice versa, but it's more convenient to emit a row at - * a time). Direct algorithms are also available, but they are much more - * complex and seem not to be any faster when reduced to code. - * - * This implementation is based on an algorithm described in - * C. Loeffler, A. Ligtenberg and G. Moschytz, "Practical Fast 1-D DCT - * Algorithms with 11 Multiplications", Proc. Int'l. Conf. on Acoustics, - * Speech, and Signal Processing 1989 (ICASSP '89), pp. 988-991. - * The primary algorithm described there uses 11 multiplies and 29 adds. - * We use their alternate method with 12 multiplies and 32 adds. - * The advantage of this method is that no data path contains more than one - * multiplication; this allows a very simple and accurate implementation in - * scaled fixed-point arithmetic, with a minimal number of shifts. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef DCT_ISLOW_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* - * The poop on this scaling stuff is as follows: - * - * Each 1-D IDCT step produces outputs which are a factor of sqrt(N) - * larger than the true IDCT outputs. The final outputs are therefore - * a factor of N larger than desired; since N=8 this can be cured by - * a simple right shift at the end of the algorithm. The advantage of - * this arrangement is that we save two multiplications per 1-D IDCT, - * because the y0 and y4 inputs need not be divided by sqrt(N). - * - * We have to do addition and subtraction of the integer inputs, which - * is no problem, and multiplication by fractional constants, which is - * a problem to do in integer arithmetic. We multiply all the constants - * by CONST_SCALE and convert them to integer constants (thus retaining - * CONST_BITS bits of precision in the constants). After doing a - * multiplication we have to divide the product by CONST_SCALE, with proper - * rounding, to produce the correct output. This division can be done - * cheaply as a right shift of CONST_BITS bits. We postpone shifting - * as long as possible so that partial sums can be added together with - * full fractional precision. - * - * The outputs of the first pass are scaled up by PASS1_BITS bits so that - * they are represented to better-than-integral precision. These outputs - * require BITS_IN_JSAMPLE + PASS1_BITS + 3 bits; this fits in a 16-bit word - * with the recommended scaling. (To scale up 12-bit sample data further, an - * intermediate INT32 array would be needed.) - * - * To avoid overflow of the 32-bit intermediate results in pass 2, we must - * have BITS_IN_JSAMPLE + CONST_BITS + PASS1_BITS <= 26. Error analysis - * shows that the values given below are the most effective. - */ - -#if BITS_IN_JSAMPLE == 8 -#define CONST_BITS 13 -#define PASS1_BITS 2 -#else -#define CONST_BITS 13 -#define PASS1_BITS 1 /* lose a little precision to avoid overflow */ -#endif - -/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus - * causing a lot of useless floating-point operations at run time. - * To get around this we use the following pre-calculated constants. - * If you change CONST_BITS you may want to add appropriate values. - * (With a reasonable C compiler, you can just rely on the FIX() macro...) - */ - -#if CONST_BITS == 13 -#define FIX_0_298631336 ((INT32) 2446) /* FIX(0.298631336) */ -#define FIX_0_390180644 ((INT32) 3196) /* FIX(0.390180644) */ -#define FIX_0_541196100 ((INT32) 4433) /* FIX(0.541196100) */ -#define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */ -#define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */ -#define FIX_1_175875602 ((INT32) 9633) /* FIX(1.175875602) */ -#define FIX_1_501321110 ((INT32) 12299) /* FIX(1.501321110) */ -#define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */ -#define FIX_1_961570560 ((INT32) 16069) /* FIX(1.961570560) */ -#define FIX_2_053119869 ((INT32) 16819) /* FIX(2.053119869) */ -#define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */ -#define FIX_3_072711026 ((INT32) 25172) /* FIX(3.072711026) */ -#else -#define FIX_0_298631336 FIX(0.298631336) -#define FIX_0_390180644 FIX(0.390180644) -#define FIX_0_541196100 FIX(0.541196100) -#define FIX_0_765366865 FIX(0.765366865) -#define FIX_0_899976223 FIX(0.899976223) -#define FIX_1_175875602 FIX(1.175875602) -#define FIX_1_501321110 FIX(1.501321110) -#define FIX_1_847759065 FIX(1.847759065) -#define FIX_1_961570560 FIX(1.961570560) -#define FIX_2_053119869 FIX(2.053119869) -#define FIX_2_562915447 FIX(2.562915447) -#define FIX_3_072711026 FIX(3.072711026) -#endif - - -/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. - * For 8-bit samples with the recommended scaling, all the variable - * and constant values involved are no more than 16 bits wide, so a - * 16x16->32 bit multiply can be used instead of a full 32x32 multiply. - * For 12-bit samples, a full 32-bit multiplication will be needed. - */ - -#if BITS_IN_JSAMPLE == 8 -#define MULTIPLY(var,const) MULTIPLY16C16(var,const) -#else -#define MULTIPLY(var,const) ((var) * (const)) -#endif - - -/* Dequantize a coefficient by multiplying it by the multiplier-table - * entry; produce an int result. In this module, both inputs and result - * are 16 bits or less, so either int or short multiply will work. - */ - -#define DEQUANTIZE(coef,quantval) (((ISLOW_MULT_TYPE) (coef)) * (quantval)) - - -/* - * Perform dequantization and inverse DCT on one block of coefficients. - */ - -GLOBAL(void) -jpeg_idct_islow (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - INT32 tmp0, tmp1, tmp2, tmp3; - INT32 tmp10, tmp11, tmp12, tmp13; - INT32 z1, z2, z3, z4, z5; - JCOEFPTR inptr; - ISLOW_MULT_TYPE * quantptr; - int * wsptr; - JSAMPROW outptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); - int ctr; - int workspace[DCTSIZE2]; /* buffers data between passes */ - SHIFT_TEMPS - - /* Pass 1: process columns from input, store into work array. */ - /* Note results are scaled up by sqrt(8) compared to a true IDCT; */ - /* furthermore, we scale the results by 2**PASS1_BITS. */ - - inptr = coef_block; - quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; - wsptr = workspace; - for (ctr = DCTSIZE; ctr > 0; ctr--) { - /* Due to quantization, we will usually find that many of the input - * coefficients are zero, especially the AC terms. We can exploit this - * by short-circuiting the IDCT calculation for any column in which all - * the AC terms are zero. In that case each output is equal to the - * DC coefficient (with scale factor as needed). - * With typical images and quantization tables, half or more of the - * column DCT calculations can be simplified this way. - */ - - if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && - inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*4] == 0 && - inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*6] == 0 && - inptr[DCTSIZE*7] == 0) { - /* AC terms all zero */ - int dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) << PASS1_BITS; - - wsptr[DCTSIZE*0] = dcval; - wsptr[DCTSIZE*1] = dcval; - wsptr[DCTSIZE*2] = dcval; - wsptr[DCTSIZE*3] = dcval; - wsptr[DCTSIZE*4] = dcval; - wsptr[DCTSIZE*5] = dcval; - wsptr[DCTSIZE*6] = dcval; - wsptr[DCTSIZE*7] = dcval; - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - continue; - } - - /* Even part: reverse the even part of the forward DCT. */ - /* The rotator is sqrt(2)*c(-6). */ - - z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); - z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); - - z1 = MULTIPLY(z2 + z3, FIX_0_541196100); - tmp2 = z1 + MULTIPLY(z3, - FIX_1_847759065); - tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); - - z2 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - z3 = DEQUANTIZE(inptr[DCTSIZE*4], quantptr[DCTSIZE*4]); - - tmp0 = (z2 + z3) << CONST_BITS; - tmp1 = (z2 - z3) << CONST_BITS; - - tmp10 = tmp0 + tmp3; - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - /* Odd part per figure 8; the matrix is unitary and hence its - * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. - */ - - tmp0 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); - tmp1 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); - tmp2 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); - tmp3 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); - - z1 = tmp0 + tmp3; - z2 = tmp1 + tmp2; - z3 = tmp0 + tmp2; - z4 = tmp1 + tmp3; - z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */ - - tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ - tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ - tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ - tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ - z1 = MULTIPLY(z1, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ - z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ - z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ - z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ - - z3 += z5; - z4 += z5; - - tmp0 += z1 + z3; - tmp1 += z2 + z4; - tmp2 += z2 + z3; - tmp3 += z1 + z4; - - /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ - - wsptr[DCTSIZE*0] = (int) DESCALE(tmp10 + tmp3, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*7] = (int) DESCALE(tmp10 - tmp3, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*1] = (int) DESCALE(tmp11 + tmp2, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*6] = (int) DESCALE(tmp11 - tmp2, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*2] = (int) DESCALE(tmp12 + tmp1, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*5] = (int) DESCALE(tmp12 - tmp1, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*3] = (int) DESCALE(tmp13 + tmp0, CONST_BITS-PASS1_BITS); - wsptr[DCTSIZE*4] = (int) DESCALE(tmp13 - tmp0, CONST_BITS-PASS1_BITS); - - inptr++; /* advance pointers to next column */ - quantptr++; - wsptr++; - } - - /* Pass 2: process rows from work array, store into output array. */ - /* Note that we must descale the results by a factor of 8 == 2**3, */ - /* and also undo the PASS1_BITS scaling. */ - - wsptr = workspace; - for (ctr = 0; ctr < DCTSIZE; ctr++) { - outptr = output_buf[ctr] + output_col; - /* Rows of zeroes can be exploited in the same way as we did with columns. - * However, the column calculation has created many nonzero AC terms, so - * the simplification applies less often (typically 5% to 10% of the time). - * On machines with very fast multiplication, it's possible that the - * test takes more time than it's worth. In that case this section - * may be commented out. - */ - -#ifndef NO_ZERO_ROW_TEST - if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && wsptr[4] == 0 && - wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) { - /* AC terms all zero */ - JSAMPLE dcval = range_limit[(int) DESCALE((INT32) wsptr[0], PASS1_BITS+3) - & RANGE_MASK]; - - outptr[0] = dcval; - outptr[1] = dcval; - outptr[2] = dcval; - outptr[3] = dcval; - outptr[4] = dcval; - outptr[5] = dcval; - outptr[6] = dcval; - outptr[7] = dcval; - - wsptr += DCTSIZE; /* advance pointer to next row */ - continue; - } -#endif - - /* Even part: reverse the even part of the forward DCT. */ - /* The rotator is sqrt(2)*c(-6). */ - - z2 = (INT32) wsptr[2]; - z3 = (INT32) wsptr[6]; - - z1 = MULTIPLY(z2 + z3, FIX_0_541196100); - tmp2 = z1 + MULTIPLY(z3, - FIX_1_847759065); - tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); - - tmp0 = ((INT32) wsptr[0] + (INT32) wsptr[4]) << CONST_BITS; - tmp1 = ((INT32) wsptr[0] - (INT32) wsptr[4]) << CONST_BITS; - - tmp10 = tmp0 + tmp3; - tmp13 = tmp0 - tmp3; - tmp11 = tmp1 + tmp2; - tmp12 = tmp1 - tmp2; - - /* Odd part per figure 8; the matrix is unitary and hence its - * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. - */ - - tmp0 = (INT32) wsptr[7]; - tmp1 = (INT32) wsptr[5]; - tmp2 = (INT32) wsptr[3]; - tmp3 = (INT32) wsptr[1]; - - z1 = tmp0 + tmp3; - z2 = tmp1 + tmp2; - z3 = tmp0 + tmp2; - z4 = tmp1 + tmp3; - z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */ - - tmp0 = MULTIPLY(tmp0, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */ - tmp1 = MULTIPLY(tmp1, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */ - tmp2 = MULTIPLY(tmp2, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */ - tmp3 = MULTIPLY(tmp3, FIX_1_501321110); /* sqrt(2) * ( c1+c3-c5-c7) */ - z1 = MULTIPLY(z1, - FIX_0_899976223); /* sqrt(2) * (c7-c3) */ - z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */ - z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */ - z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */ - - z3 += z5; - z4 += z5; - - tmp0 += z1 + z3; - tmp1 += z2 + z4; - tmp2 += z2 + z3; - tmp3 += z1 + z4; - - /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ - - outptr[0] = range_limit[(int) DESCALE(tmp10 + tmp3, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[7] = range_limit[(int) DESCALE(tmp10 - tmp3, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[1] = range_limit[(int) DESCALE(tmp11 + tmp2, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[6] = range_limit[(int) DESCALE(tmp11 - tmp2, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[2] = range_limit[(int) DESCALE(tmp12 + tmp1, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[5] = range_limit[(int) DESCALE(tmp12 - tmp1, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[3] = range_limit[(int) DESCALE(tmp13 + tmp0, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - outptr[4] = range_limit[(int) DESCALE(tmp13 - tmp0, - CONST_BITS+PASS1_BITS+3) - & RANGE_MASK]; - - wsptr += DCTSIZE; /* advance pointer to next row */ - } -} - -#endif /* DCT_ISLOW_SUPPORTED */ diff --git a/project/jni/jpeg/jidctred.c b/project/jni/jpeg/jidctred.c deleted file mode 100644 index 421f3c7ca..000000000 --- a/project/jni/jpeg/jidctred.c +++ /dev/null @@ -1,398 +0,0 @@ -/* - * jidctred.c - * - * Copyright (C) 1994-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains inverse-DCT routines that produce reduced-size output: - * either 4x4, 2x2, or 1x1 pixels from an 8x8 DCT block. - * - * The implementation is based on the Loeffler, Ligtenberg and Moschytz (LL&M) - * algorithm used in jidctint.c. We simply replace each 8-to-8 1-D IDCT step - * with an 8-to-4 step that produces the four averages of two adjacent outputs - * (or an 8-to-2 step producing two averages of four outputs, for 2x2 output). - * These steps were derived by computing the corresponding values at the end - * of the normal LL&M code, then simplifying as much as possible. - * - * 1x1 is trivial: just take the DC coefficient divided by 8. - * - * See jidctint.c for additional comments. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef IDCT_SCALING_SUPPORTED - - -/* - * This module is specialized to the case DCTSIZE = 8. - */ - -#if DCTSIZE != 8 - Sorry, this code only copes with 8x8 DCTs. /* deliberate syntax err */ -#endif - - -/* Scaling is the same as in jidctint.c. */ - -#if BITS_IN_JSAMPLE == 8 -#define CONST_BITS 13 -#define PASS1_BITS 2 -#else -#define CONST_BITS 13 -#define PASS1_BITS 1 /* lose a little precision to avoid overflow */ -#endif - -/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus - * causing a lot of useless floating-point operations at run time. - * To get around this we use the following pre-calculated constants. - * If you change CONST_BITS you may want to add appropriate values. - * (With a reasonable C compiler, you can just rely on the FIX() macro...) - */ - -#if CONST_BITS == 13 -#define FIX_0_211164243 ((INT32) 1730) /* FIX(0.211164243) */ -#define FIX_0_509795579 ((INT32) 4176) /* FIX(0.509795579) */ -#define FIX_0_601344887 ((INT32) 4926) /* FIX(0.601344887) */ -#define FIX_0_720959822 ((INT32) 5906) /* FIX(0.720959822) */ -#define FIX_0_765366865 ((INT32) 6270) /* FIX(0.765366865) */ -#define FIX_0_850430095 ((INT32) 6967) /* FIX(0.850430095) */ -#define FIX_0_899976223 ((INT32) 7373) /* FIX(0.899976223) */ -#define FIX_1_061594337 ((INT32) 8697) /* FIX(1.061594337) */ -#define FIX_1_272758580 ((INT32) 10426) /* FIX(1.272758580) */ -#define FIX_1_451774981 ((INT32) 11893) /* FIX(1.451774981) */ -#define FIX_1_847759065 ((INT32) 15137) /* FIX(1.847759065) */ -#define FIX_2_172734803 ((INT32) 17799) /* FIX(2.172734803) */ -#define FIX_2_562915447 ((INT32) 20995) /* FIX(2.562915447) */ -#define FIX_3_624509785 ((INT32) 29692) /* FIX(3.624509785) */ -#else -#define FIX_0_211164243 FIX(0.211164243) -#define FIX_0_509795579 FIX(0.509795579) -#define FIX_0_601344887 FIX(0.601344887) -#define FIX_0_720959822 FIX(0.720959822) -#define FIX_0_765366865 FIX(0.765366865) -#define FIX_0_850430095 FIX(0.850430095) -#define FIX_0_899976223 FIX(0.899976223) -#define FIX_1_061594337 FIX(1.061594337) -#define FIX_1_272758580 FIX(1.272758580) -#define FIX_1_451774981 FIX(1.451774981) -#define FIX_1_847759065 FIX(1.847759065) -#define FIX_2_172734803 FIX(2.172734803) -#define FIX_2_562915447 FIX(2.562915447) -#define FIX_3_624509785 FIX(3.624509785) -#endif - - -/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result. - * For 8-bit samples with the recommended scaling, all the variable - * and constant values involved are no more than 16 bits wide, so a - * 16x16->32 bit multiply can be used instead of a full 32x32 multiply. - * For 12-bit samples, a full 32-bit multiplication will be needed. - */ - -#if BITS_IN_JSAMPLE == 8 -#define MULTIPLY(var,const) MULTIPLY16C16(var,const) -#else -#define MULTIPLY(var,const) ((var) * (const)) -#endif - - -/* Dequantize a coefficient by multiplying it by the multiplier-table - * entry; produce an int result. In this module, both inputs and result - * are 16 bits or less, so either int or short multiply will work. - */ - -#define DEQUANTIZE(coef,quantval) (((ISLOW_MULT_TYPE) (coef)) * (quantval)) - - -/* - * Perform dequantization and inverse DCT on one block of coefficients, - * producing a reduced-size 4x4 output block. - */ - -GLOBAL(void) -jpeg_idct_4x4 (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - INT32 tmp0, tmp2, tmp10, tmp12; - INT32 z1, z2, z3, z4; - JCOEFPTR inptr; - ISLOW_MULT_TYPE * quantptr; - int * wsptr; - JSAMPROW outptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); - int ctr; - int workspace[DCTSIZE*4]; /* buffers data between passes */ - SHIFT_TEMPS - - /* Pass 1: process columns from input, store into work array. */ - - inptr = coef_block; - quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; - wsptr = workspace; - for (ctr = DCTSIZE; ctr > 0; inptr++, quantptr++, wsptr++, ctr--) { - /* Don't bother to process column 4, because second pass won't use it */ - if (ctr == DCTSIZE-4) - continue; - if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*2] == 0 && - inptr[DCTSIZE*3] == 0 && inptr[DCTSIZE*5] == 0 && - inptr[DCTSIZE*6] == 0 && inptr[DCTSIZE*7] == 0) { - /* AC terms all zero; we need not examine term 4 for 4x4 output */ - int dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) << PASS1_BITS; - - wsptr[DCTSIZE*0] = dcval; - wsptr[DCTSIZE*1] = dcval; - wsptr[DCTSIZE*2] = dcval; - wsptr[DCTSIZE*3] = dcval; - - continue; - } - - /* Even part */ - - tmp0 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - tmp0 <<= (CONST_BITS+1); - - z2 = DEQUANTIZE(inptr[DCTSIZE*2], quantptr[DCTSIZE*2]); - z3 = DEQUANTIZE(inptr[DCTSIZE*6], quantptr[DCTSIZE*6]); - - tmp2 = MULTIPLY(z2, FIX_1_847759065) + MULTIPLY(z3, - FIX_0_765366865); - - tmp10 = tmp0 + tmp2; - tmp12 = tmp0 - tmp2; - - /* Odd part */ - - z1 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); - z2 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); - z3 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); - z4 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); - - tmp0 = MULTIPLY(z1, - FIX_0_211164243) /* sqrt(2) * (c3-c1) */ - + MULTIPLY(z2, FIX_1_451774981) /* sqrt(2) * (c3+c7) */ - + MULTIPLY(z3, - FIX_2_172734803) /* sqrt(2) * (-c1-c5) */ - + MULTIPLY(z4, FIX_1_061594337); /* sqrt(2) * (c5+c7) */ - - tmp2 = MULTIPLY(z1, - FIX_0_509795579) /* sqrt(2) * (c7-c5) */ - + MULTIPLY(z2, - FIX_0_601344887) /* sqrt(2) * (c5-c1) */ - + MULTIPLY(z3, FIX_0_899976223) /* sqrt(2) * (c3-c7) */ - + MULTIPLY(z4, FIX_2_562915447); /* sqrt(2) * (c1+c3) */ - - /* Final output stage */ - - wsptr[DCTSIZE*0] = (int) DESCALE(tmp10 + tmp2, CONST_BITS-PASS1_BITS+1); - wsptr[DCTSIZE*3] = (int) DESCALE(tmp10 - tmp2, CONST_BITS-PASS1_BITS+1); - wsptr[DCTSIZE*1] = (int) DESCALE(tmp12 + tmp0, CONST_BITS-PASS1_BITS+1); - wsptr[DCTSIZE*2] = (int) DESCALE(tmp12 - tmp0, CONST_BITS-PASS1_BITS+1); - } - - /* Pass 2: process 4 rows from work array, store into output array. */ - - wsptr = workspace; - for (ctr = 0; ctr < 4; ctr++) { - outptr = output_buf[ctr] + output_col; - /* It's not clear whether a zero row test is worthwhile here ... */ - -#ifndef NO_ZERO_ROW_TEST - if (wsptr[1] == 0 && wsptr[2] == 0 && wsptr[3] == 0 && - wsptr[5] == 0 && wsptr[6] == 0 && wsptr[7] == 0) { - /* AC terms all zero */ - JSAMPLE dcval = range_limit[(int) DESCALE((INT32) wsptr[0], PASS1_BITS+3) - & RANGE_MASK]; - - outptr[0] = dcval; - outptr[1] = dcval; - outptr[2] = dcval; - outptr[3] = dcval; - - wsptr += DCTSIZE; /* advance pointer to next row */ - continue; - } -#endif - - /* Even part */ - - tmp0 = ((INT32) wsptr[0]) << (CONST_BITS+1); - - tmp2 = MULTIPLY((INT32) wsptr[2], FIX_1_847759065) - + MULTIPLY((INT32) wsptr[6], - FIX_0_765366865); - - tmp10 = tmp0 + tmp2; - tmp12 = tmp0 - tmp2; - - /* Odd part */ - - z1 = (INT32) wsptr[7]; - z2 = (INT32) wsptr[5]; - z3 = (INT32) wsptr[3]; - z4 = (INT32) wsptr[1]; - - tmp0 = MULTIPLY(z1, - FIX_0_211164243) /* sqrt(2) * (c3-c1) */ - + MULTIPLY(z2, FIX_1_451774981) /* sqrt(2) * (c3+c7) */ - + MULTIPLY(z3, - FIX_2_172734803) /* sqrt(2) * (-c1-c5) */ - + MULTIPLY(z4, FIX_1_061594337); /* sqrt(2) * (c5+c7) */ - - tmp2 = MULTIPLY(z1, - FIX_0_509795579) /* sqrt(2) * (c7-c5) */ - + MULTIPLY(z2, - FIX_0_601344887) /* sqrt(2) * (c5-c1) */ - + MULTIPLY(z3, FIX_0_899976223) /* sqrt(2) * (c3-c7) */ - + MULTIPLY(z4, FIX_2_562915447); /* sqrt(2) * (c1+c3) */ - - /* Final output stage */ - - outptr[0] = range_limit[(int) DESCALE(tmp10 + tmp2, - CONST_BITS+PASS1_BITS+3+1) - & RANGE_MASK]; - outptr[3] = range_limit[(int) DESCALE(tmp10 - tmp2, - CONST_BITS+PASS1_BITS+3+1) - & RANGE_MASK]; - outptr[1] = range_limit[(int) DESCALE(tmp12 + tmp0, - CONST_BITS+PASS1_BITS+3+1) - & RANGE_MASK]; - outptr[2] = range_limit[(int) DESCALE(tmp12 - tmp0, - CONST_BITS+PASS1_BITS+3+1) - & RANGE_MASK]; - - wsptr += DCTSIZE; /* advance pointer to next row */ - } -} - - -/* - * Perform dequantization and inverse DCT on one block of coefficients, - * producing a reduced-size 2x2 output block. - */ - -GLOBAL(void) -jpeg_idct_2x2 (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - INT32 tmp0, tmp10, z1; - JCOEFPTR inptr; - ISLOW_MULT_TYPE * quantptr; - int * wsptr; - JSAMPROW outptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); - int ctr; - int workspace[DCTSIZE*2]; /* buffers data between passes */ - SHIFT_TEMPS - - /* Pass 1: process columns from input, store into work array. */ - - inptr = coef_block; - quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; - wsptr = workspace; - for (ctr = DCTSIZE; ctr > 0; inptr++, quantptr++, wsptr++, ctr--) { - /* Don't bother to process columns 2,4,6 */ - if (ctr == DCTSIZE-2 || ctr == DCTSIZE-4 || ctr == DCTSIZE-6) - continue; - if (inptr[DCTSIZE*1] == 0 && inptr[DCTSIZE*3] == 0 && - inptr[DCTSIZE*5] == 0 && inptr[DCTSIZE*7] == 0) { - /* AC terms all zero; we need not examine terms 2,4,6 for 2x2 output */ - int dcval = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]) << PASS1_BITS; - - wsptr[DCTSIZE*0] = dcval; - wsptr[DCTSIZE*1] = dcval; - - continue; - } - - /* Even part */ - - z1 = DEQUANTIZE(inptr[DCTSIZE*0], quantptr[DCTSIZE*0]); - tmp10 = z1 << (CONST_BITS+2); - - /* Odd part */ - - z1 = DEQUANTIZE(inptr[DCTSIZE*7], quantptr[DCTSIZE*7]); - tmp0 = MULTIPLY(z1, - FIX_0_720959822); /* sqrt(2) * (c7-c5+c3-c1) */ - z1 = DEQUANTIZE(inptr[DCTSIZE*5], quantptr[DCTSIZE*5]); - tmp0 += MULTIPLY(z1, FIX_0_850430095); /* sqrt(2) * (-c1+c3+c5+c7) */ - z1 = DEQUANTIZE(inptr[DCTSIZE*3], quantptr[DCTSIZE*3]); - tmp0 += MULTIPLY(z1, - FIX_1_272758580); /* sqrt(2) * (-c1+c3-c5-c7) */ - z1 = DEQUANTIZE(inptr[DCTSIZE*1], quantptr[DCTSIZE*1]); - tmp0 += MULTIPLY(z1, FIX_3_624509785); /* sqrt(2) * (c1+c3+c5+c7) */ - - /* Final output stage */ - - wsptr[DCTSIZE*0] = (int) DESCALE(tmp10 + tmp0, CONST_BITS-PASS1_BITS+2); - wsptr[DCTSIZE*1] = (int) DESCALE(tmp10 - tmp0, CONST_BITS-PASS1_BITS+2); - } - - /* Pass 2: process 2 rows from work array, store into output array. */ - - wsptr = workspace; - for (ctr = 0; ctr < 2; ctr++) { - outptr = output_buf[ctr] + output_col; - /* It's not clear whether a zero row test is worthwhile here ... */ - -#ifndef NO_ZERO_ROW_TEST - if (wsptr[1] == 0 && wsptr[3] == 0 && wsptr[5] == 0 && wsptr[7] == 0) { - /* AC terms all zero */ - JSAMPLE dcval = range_limit[(int) DESCALE((INT32) wsptr[0], PASS1_BITS+3) - & RANGE_MASK]; - - outptr[0] = dcval; - outptr[1] = dcval; - - wsptr += DCTSIZE; /* advance pointer to next row */ - continue; - } -#endif - - /* Even part */ - - tmp10 = ((INT32) wsptr[0]) << (CONST_BITS+2); - - /* Odd part */ - - tmp0 = MULTIPLY((INT32) wsptr[7], - FIX_0_720959822) /* sqrt(2) * (c7-c5+c3-c1) */ - + MULTIPLY((INT32) wsptr[5], FIX_0_850430095) /* sqrt(2) * (-c1+c3+c5+c7) */ - + MULTIPLY((INT32) wsptr[3], - FIX_1_272758580) /* sqrt(2) * (-c1+c3-c5-c7) */ - + MULTIPLY((INT32) wsptr[1], FIX_3_624509785); /* sqrt(2) * (c1+c3+c5+c7) */ - - /* Final output stage */ - - outptr[0] = range_limit[(int) DESCALE(tmp10 + tmp0, - CONST_BITS+PASS1_BITS+3+2) - & RANGE_MASK]; - outptr[1] = range_limit[(int) DESCALE(tmp10 - tmp0, - CONST_BITS+PASS1_BITS+3+2) - & RANGE_MASK]; - - wsptr += DCTSIZE; /* advance pointer to next row */ - } -} - - -/* - * Perform dequantization and inverse DCT on one block of coefficients, - * producing a reduced-size 1x1 output block. - */ - -GLOBAL(void) -jpeg_idct_1x1 (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - int dcval; - ISLOW_MULT_TYPE * quantptr; - JSAMPLE *range_limit = IDCT_range_limit(cinfo); - SHIFT_TEMPS - - /* We hardly need an inverse DCT routine for this: just take the - * average pixel value, which is one-eighth of the DC coefficient. - */ - quantptr = (ISLOW_MULT_TYPE *) compptr->dct_table; - dcval = DEQUANTIZE(coef_block[0], quantptr[0]); - dcval = (int) DESCALE((INT32) dcval, 3); - - output_buf[0][output_col] = range_limit[dcval & RANGE_MASK]; -} - -#endif /* IDCT_SCALING_SUPPORTED */ diff --git a/project/jni/jpeg/jinclude.h b/project/jni/jpeg/jinclude.h deleted file mode 100644 index 0a4f15146..000000000 --- a/project/jni/jpeg/jinclude.h +++ /dev/null @@ -1,91 +0,0 @@ -/* - * jinclude.h - * - * Copyright (C) 1991-1994, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file exists to provide a single place to fix any problems with - * including the wrong system include files. (Common problems are taken - * care of by the standard jconfig symbols, but on really weird systems - * you may have to edit this file.) - * - * NOTE: this file is NOT intended to be included by applications using the - * JPEG library. Most applications need only include jpeglib.h. - */ - - -/* Include auto-config file to find out which system include files we need. */ - -#include "jconfig.h" /* auto configuration options */ -#define JCONFIG_INCLUDED /* so that jpeglib.h doesn't do it again */ - -/* - * We need the NULL macro and size_t typedef. - * On an ANSI-conforming system it is sufficient to include . - * Otherwise, we get them from or ; we may have to - * pull in as well. - * Note that the core JPEG library does not require ; - * only the default error handler and data source/destination modules do. - * But we must pull it in because of the references to FILE in jpeglib.h. - * You can remove those references if you want to compile without . - */ - -#ifdef HAVE_STDDEF_H -#include -#endif - -#ifdef HAVE_STDLIB_H -#include -#endif - -#ifdef NEED_SYS_TYPES_H -#include -#endif - -#include - -/* - * We need memory copying and zeroing functions, plus strncpy(). - * ANSI and System V implementations declare these in . - * BSD doesn't have the mem() functions, but it does have bcopy()/bzero(). - * Some systems may declare memset and memcpy in . - * - * NOTE: we assume the size parameters to these functions are of type size_t. - * Change the casts in these macros if not! - */ - -#ifdef NEED_BSD_STRINGS - -#include -#define MEMZERO(target,size) bzero((void *)(target), (size_t)(size)) -#define MEMCOPY(dest,src,size) bcopy((const void *)(src), (void *)(dest), (size_t)(size)) - -#else /* not BSD, assume ANSI/SysV string lib */ - -#include -#define MEMZERO(target,size) memset((void *)(target), 0, (size_t)(size)) -#define MEMCOPY(dest,src,size) memcpy((void *)(dest), (const void *)(src), (size_t)(size)) - -#endif - -/* - * In ANSI C, and indeed any rational implementation, size_t is also the - * type returned by sizeof(). However, it seems there are some irrational - * implementations out there, in which sizeof() returns an int even though - * size_t is defined as long or unsigned long. To ensure consistent results - * we always use this SIZEOF() macro in place of using sizeof() directly. - */ - -#define SIZEOF(object) ((size_t) sizeof(object)) - -/* - * The modules that use fread() and fwrite() always invoke them through - * these macros. On some systems you may need to twiddle the argument casts. - * CAUTION: argument order is different from underlying functions! - */ - -#define JFREAD(file,buf,sizeofbuf) \ - ((size_t) fread((void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) -#define JFWRITE(file,buf,sizeofbuf) \ - ((size_t) fwrite((const void *) (buf), (size_t) 1, (size_t) (sizeofbuf), (file))) diff --git a/project/jni/jpeg/jmem-android.c b/project/jni/jpeg/jmem-android.c deleted file mode 100644 index 5da4d0a6d..000000000 --- a/project/jni/jpeg/jmem-android.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * Copyright (C) 2007-2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef HAVE_STDLIB_H /* should declare malloc(),free() */ -extern void * malloc JPP((size_t size)); -extern void free JPP((void *ptr)); -#endif - -#ifndef SEEK_SET /* pre-ANSI systems may not define this; */ -#define SEEK_SET 0 /* if not, assume 0 is correct */ -#endif - - -/* - * Memory allocation and freeing are controlled by the regular library - * routines malloc() and free(). - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * "Large" objects are treated the same as "small" ones. - * NB: although we include FAR keywords in the routine declarations, - * this file won't actually work in 80x86 small/medium model; at least, - * you probably won't be able to process useful-size images in only 64KB. - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * This routine computes the total memory space available for allocation. - * It's impossible to do this in a portable way; our current solution is - * to make the user tell us (with a default value set at compile time). - * If you can actually get the available space, it's a good idea to subtract - * a slop factor of 5% or so. - */ - -#ifndef DEFAULT_MAX_MEM /* so can override from makefile */ -#define DEFAULT_MAX_MEM 10000000L /* default: ten megabyte */ -#endif - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - return cinfo->mem->max_memory_to_use - already_allocated; -} - - -/* - * Backing store (temporary file) management. - * Backing store objects are only used when the value returned by - * jpeg_mem_available is less than the total space needed. You can dispense - * with these routines if you have plenty of virtual memory; see jmemnobs.c. - */ - - -METHODDEF(void) -read_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (fseek(info->temp_file, file_offset, SEEK_SET)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - if (JFREAD(info->temp_file, buffer_address, byte_count) - != (size_t) byte_count) - ERREXIT(cinfo, JERR_TFILE_READ); -} - - -METHODDEF(void) -write_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (fseek(info->temp_file, file_offset, SEEK_SET)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - if (JFWRITE(info->temp_file, buffer_address, byte_count) - != (size_t) byte_count) - ERREXIT(cinfo, JERR_TFILE_WRITE); -} - - -METHODDEF(void) -close_backing_store (j_common_ptr cinfo, backing_store_ptr info) -{ - fclose(info->temp_file); - /* Since this implementation uses tmpfile() to create the file, - * no explicit file deletion is needed. - */ -} - -static FILE* getTempFileFromPath(const char * path) { - FILE * fd = fopen(path, "w+"); - unlink(path); - return fd; -} - -static FILE* getTempFile() { - char path[1024]; - snprintf(path, 1023, "/sdcard/.%d.tmp", getpid()); - FILE * fd = getTempFileFromPath(path); - if (fd == NULL) { - // anywhere else we can create a temp file? - // snprintf(path, 1023, "/data/data/.%d.tmp", getpid()); - // fd = getTempFileFromPath(path); - } - return fd; -} - -/* - * Initial opening of a backing-store object. - * - * This version uses tmpfile(), which constructs a suitable file name - * behind the scenes. We don't have to use info->temp_name[] at all; - * indeed, we can't even find out the actual name of the temp file. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - if ((info->temp_file = getTempFile()) == NULL) - ERREXITS(cinfo, JERR_TFILE_CREATE, ""); - info->read_backing_store = read_backing_store; - info->write_backing_store = write_backing_store; - info->close_backing_store = close_backing_store; -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* no work */ -} diff --git a/project/jni/jpeg/jmemansi.c b/project/jni/jpeg/jmemansi.c deleted file mode 100644 index 2d93e4962..000000000 --- a/project/jni/jpeg/jmemansi.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * jmemansi.c - * - * Copyright (C) 1992-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file provides a simple generic implementation of the system- - * dependent portion of the JPEG memory manager. This implementation - * assumes that you have the ANSI-standard library routine tmpfile(). - * Also, the problem of determining the amount of memory available - * is shoved onto the user. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef HAVE_STDLIB_H /* should declare malloc(),free() */ -extern void * malloc JPP((size_t size)); -extern void free JPP((void *ptr)); -#endif - -#ifndef SEEK_SET /* pre-ANSI systems may not define this; */ -#define SEEK_SET 0 /* if not, assume 0 is correct */ -#endif - - -/* - * Memory allocation and freeing are controlled by the regular library - * routines malloc() and free(). - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * "Large" objects are treated the same as "small" ones. - * NB: although we include FAR keywords in the routine declarations, - * this file won't actually work in 80x86 small/medium model; at least, - * you probably won't be able to process useful-size images in only 64KB. - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * This routine computes the total memory space available for allocation. - * It's impossible to do this in a portable way; our current solution is - * to make the user tell us (with a default value set at compile time). - * If you can actually get the available space, it's a good idea to subtract - * a slop factor of 5% or so. - */ - -#ifndef DEFAULT_MAX_MEM /* so can override from makefile */ -#define DEFAULT_MAX_MEM 1000000L /* default: one megabyte */ -#endif - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - return cinfo->mem->max_memory_to_use - already_allocated; -} - - -/* - * Backing store (temporary file) management. - * Backing store objects are only used when the value returned by - * jpeg_mem_available is less than the total space needed. You can dispense - * with these routines if you have plenty of virtual memory; see jmemnobs.c. - */ - - -METHODDEF(void) -read_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (fseek(info->temp_file, file_offset, SEEK_SET)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - if (JFREAD(info->temp_file, buffer_address, byte_count) - != (size_t) byte_count) - ERREXIT(cinfo, JERR_TFILE_READ); -} - - -METHODDEF(void) -write_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (fseek(info->temp_file, file_offset, SEEK_SET)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - if (JFWRITE(info->temp_file, buffer_address, byte_count) - != (size_t) byte_count) - ERREXIT(cinfo, JERR_TFILE_WRITE); -} - - -METHODDEF(void) -close_backing_store (j_common_ptr cinfo, backing_store_ptr info) -{ - fclose(info->temp_file); - /* Since this implementation uses tmpfile() to create the file, - * no explicit file deletion is needed. - */ -} - - -/* - * Initial opening of a backing-store object. - * - * This version uses tmpfile(), which constructs a suitable file name - * behind the scenes. We don't have to use info->temp_name[] at all; - * indeed, we can't even find out the actual name of the temp file. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - if ((info->temp_file = tmpfile()) == NULL) - ERREXITS(cinfo, JERR_TFILE_CREATE, ""); - info->read_backing_store = read_backing_store; - info->write_backing_store = write_backing_store; - info->close_backing_store = close_backing_store; -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* no work */ -} diff --git a/project/jni/jpeg/jmemdos.c b/project/jni/jpeg/jmemdos.c deleted file mode 100644 index 60b45c693..000000000 --- a/project/jni/jpeg/jmemdos.c +++ /dev/null @@ -1,638 +0,0 @@ -/* - * jmemdos.c - * - * Copyright (C) 1992-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file provides an MS-DOS-compatible implementation of the system- - * dependent portion of the JPEG memory manager. Temporary data can be - * stored in extended or expanded memory as well as in regular DOS files. - * - * If you use this file, you must be sure that NEED_FAR_POINTERS is defined - * if you compile in a small-data memory model; it should NOT be defined if - * you use a large-data memory model. This file is not recommended if you - * are using a flat-memory-space 386 environment such as DJGCC or Watcom C. - * Also, this code will NOT work if struct fields are aligned on greater than - * 2-byte boundaries. - * - * Based on code contributed by Ge' Weijers. - */ - -/* - * If you have both extended and expanded memory, you may want to change the - * order in which they are tried in jopen_backing_store. On a 286 machine - * expanded memory is usually faster, since extended memory access involves - * an expensive protected-mode-and-back switch. On 386 and better, extended - * memory is usually faster. As distributed, the code tries extended memory - * first (what? not everyone has a 386? :-). - * - * You can disable use of extended/expanded memory entirely by altering these - * definitions or overriding them from the Makefile (eg, -DEMS_SUPPORTED=0). - */ - -#ifndef XMS_SUPPORTED -#define XMS_SUPPORTED 1 -#endif -#ifndef EMS_SUPPORTED -#define EMS_SUPPORTED 1 -#endif - - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef HAVE_STDLIB_H /* should declare these */ -extern void * malloc JPP((size_t size)); -extern void free JPP((void *ptr)); -extern char * getenv JPP((const char * name)); -#endif - -#ifdef NEED_FAR_POINTERS - -#ifdef __TURBOC__ -/* These definitions work for Borland C (Turbo C) */ -#include /* need farmalloc(), farfree() */ -#define far_malloc(x) farmalloc(x) -#define far_free(x) farfree(x) -#else -/* These definitions work for Microsoft C and compatible compilers */ -#include /* need _fmalloc(), _ffree() */ -#define far_malloc(x) _fmalloc(x) -#define far_free(x) _ffree(x) -#endif - -#else /* not NEED_FAR_POINTERS */ - -#define far_malloc(x) malloc(x) -#define far_free(x) free(x) - -#endif /* NEED_FAR_POINTERS */ - -#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ -#define READ_BINARY "r" -#else -#define READ_BINARY "rb" -#endif - -#ifndef USE_MSDOS_MEMMGR /* make sure user got configuration right */ - You forgot to define USE_MSDOS_MEMMGR in jconfig.h. /* deliberate syntax error */ -#endif - -#if MAX_ALLOC_CHUNK >= 65535L /* make sure jconfig.h got this right */ - MAX_ALLOC_CHUNK should be less than 64K. /* deliberate syntax error */ -#endif - - -/* - * Declarations for assembly-language support routines (see jmemdosa.asm). - * - * The functions are declared "far" as are all their pointer arguments; - * this ensures the assembly source code will work regardless of the - * compiler memory model. We assume "short" is 16 bits, "long" is 32. - */ - -typedef void far * XMSDRIVER; /* actually a pointer to code */ -typedef struct { /* registers for calling XMS driver */ - unsigned short ax, dx, bx; - void far * ds_si; - } XMScontext; -typedef struct { /* registers for calling EMS driver */ - unsigned short ax, dx, bx; - void far * ds_si; - } EMScontext; - -extern short far jdos_open JPP((short far * handle, char far * filename)); -extern short far jdos_close JPP((short handle)); -extern short far jdos_seek JPP((short handle, long offset)); -extern short far jdos_read JPP((short handle, void far * buffer, - unsigned short count)); -extern short far jdos_write JPP((short handle, void far * buffer, - unsigned short count)); -extern void far jxms_getdriver JPP((XMSDRIVER far *)); -extern void far jxms_calldriver JPP((XMSDRIVER, XMScontext far *)); -extern short far jems_available JPP((void)); -extern void far jems_calldriver JPP((EMScontext far *)); - - -/* - * Selection of a file name for a temporary file. - * This is highly system-dependent, and you may want to customize it. - */ - -static int next_file_num; /* to distinguish among several temp files */ - -LOCAL(void) -select_file_name (char * fname) -{ - const char * env; - char * ptr; - FILE * tfile; - - /* Keep generating file names till we find one that's not in use */ - for (;;) { - /* Get temp directory name from environment TMP or TEMP variable; - * if none, use "." - */ - if ((env = (const char *) getenv("TMP")) == NULL) - if ((env = (const char *) getenv("TEMP")) == NULL) - env = "."; - if (*env == '\0') /* null string means "." */ - env = "."; - ptr = fname; /* copy name to fname */ - while (*env != '\0') - *ptr++ = *env++; - if (ptr[-1] != '\\' && ptr[-1] != '/') - *ptr++ = '\\'; /* append backslash if not in env variable */ - /* Append a suitable file name */ - next_file_num++; /* advance counter */ - sprintf(ptr, "JPG%03d.TMP", next_file_num); - /* Probe to see if file name is already in use */ - if ((tfile = fopen(fname, READ_BINARY)) == NULL) - break; - fclose(tfile); /* oops, it's there; close tfile & try again */ - } -} - - -/* - * Near-memory allocation and freeing are controlled by the regular library - * routines malloc() and free(). - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * "Large" objects are allocated in far memory, if possible - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) far_malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - far_free(object); -} - - -/* - * This routine computes the total memory space available for allocation. - * It's impossible to do this in a portable way; our current solution is - * to make the user tell us (with a default value set at compile time). - * If you can actually get the available space, it's a good idea to subtract - * a slop factor of 5% or so. - */ - -#ifndef DEFAULT_MAX_MEM /* so can override from makefile */ -#define DEFAULT_MAX_MEM 300000L /* for total usage about 450K */ -#endif - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - return cinfo->mem->max_memory_to_use - already_allocated; -} - - -/* - * Backing store (temporary file) management. - * Backing store objects are only used when the value returned by - * jpeg_mem_available is less than the total space needed. You can dispense - * with these routines if you have plenty of virtual memory; see jmemnobs.c. - */ - -/* - * For MS-DOS we support three types of backing storage: - * 1. Conventional DOS files. We access these by direct DOS calls rather - * than via the stdio package. This provides a bit better performance, - * but the real reason is that the buffers to be read or written are FAR. - * The stdio library for small-data memory models can't cope with that. - * 2. Extended memory, accessed per the XMS V2.0 specification. - * 3. Expanded memory, accessed per the LIM/EMS 4.0 specification. - * You'll need copies of those specs to make sense of the related code. - * The specs are available by Internet FTP from the SIMTEL archives - * (oak.oakland.edu and its various mirror sites). See files - * pub/msdos/microsoft/xms20.arc and pub/msdos/info/limems41.zip. - */ - - -/* - * Access methods for a DOS file. - */ - - -METHODDEF(void) -read_file_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (jdos_seek(info->handle.file_handle, file_offset)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - /* Since MAX_ALLOC_CHUNK is less than 64K, byte_count will be too. */ - if (byte_count > 65535L) /* safety check */ - ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK); - if (jdos_read(info->handle.file_handle, buffer_address, - (unsigned short) byte_count)) - ERREXIT(cinfo, JERR_TFILE_READ); -} - - -METHODDEF(void) -write_file_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (jdos_seek(info->handle.file_handle, file_offset)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - /* Since MAX_ALLOC_CHUNK is less than 64K, byte_count will be too. */ - if (byte_count > 65535L) /* safety check */ - ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK); - if (jdos_write(info->handle.file_handle, buffer_address, - (unsigned short) byte_count)) - ERREXIT(cinfo, JERR_TFILE_WRITE); -} - - -METHODDEF(void) -close_file_store (j_common_ptr cinfo, backing_store_ptr info) -{ - jdos_close(info->handle.file_handle); /* close the file */ - remove(info->temp_name); /* delete the file */ -/* If your system doesn't have remove(), try unlink() instead. - * remove() is the ANSI-standard name for this function, but - * unlink() was more common in pre-ANSI systems. - */ - TRACEMSS(cinfo, 1, JTRC_TFILE_CLOSE, info->temp_name); -} - - -LOCAL(boolean) -open_file_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - short handle; - - select_file_name(info->temp_name); - if (jdos_open((short far *) & handle, (char far *) info->temp_name)) { - /* might as well exit since jpeg_open_backing_store will fail anyway */ - ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); - return FALSE; - } - info->handle.file_handle = handle; - info->read_backing_store = read_file_store; - info->write_backing_store = write_file_store; - info->close_backing_store = close_file_store; - TRACEMSS(cinfo, 1, JTRC_TFILE_OPEN, info->temp_name); - return TRUE; /* succeeded */ -} - - -/* - * Access methods for extended memory. - */ - -#if XMS_SUPPORTED - -static XMSDRIVER xms_driver; /* saved address of XMS driver */ - -typedef union { /* either long offset or real-mode pointer */ - long offset; - void far * ptr; - } XMSPTR; - -typedef struct { /* XMS move specification structure */ - long length; - XMSH src_handle; - XMSPTR src; - XMSH dst_handle; - XMSPTR dst; - } XMSspec; - -#define ODD(X) (((X) & 1L) != 0) - - -METHODDEF(void) -read_xms_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - XMScontext ctx; - XMSspec spec; - char endbuffer[2]; - - /* The XMS driver can't cope with an odd length, so handle the last byte - * specially if byte_count is odd. We don't expect this to be common. - */ - - spec.length = byte_count & (~ 1L); - spec.src_handle = info->handle.xms_handle; - spec.src.offset = file_offset; - spec.dst_handle = 0; - spec.dst.ptr = buffer_address; - - ctx.ds_si = (void far *) & spec; - ctx.ax = 0x0b00; /* EMB move */ - jxms_calldriver(xms_driver, (XMScontext far *) & ctx); - if (ctx.ax != 1) - ERREXIT(cinfo, JERR_XMS_READ); - - if (ODD(byte_count)) { - read_xms_store(cinfo, info, (void FAR *) endbuffer, - file_offset + byte_count - 1L, 2L); - ((char FAR *) buffer_address)[byte_count - 1L] = endbuffer[0]; - } -} - - -METHODDEF(void) -write_xms_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - XMScontext ctx; - XMSspec spec; - char endbuffer[2]; - - /* The XMS driver can't cope with an odd length, so handle the last byte - * specially if byte_count is odd. We don't expect this to be common. - */ - - spec.length = byte_count & (~ 1L); - spec.src_handle = 0; - spec.src.ptr = buffer_address; - spec.dst_handle = info->handle.xms_handle; - spec.dst.offset = file_offset; - - ctx.ds_si = (void far *) & spec; - ctx.ax = 0x0b00; /* EMB move */ - jxms_calldriver(xms_driver, (XMScontext far *) & ctx); - if (ctx.ax != 1) - ERREXIT(cinfo, JERR_XMS_WRITE); - - if (ODD(byte_count)) { - read_xms_store(cinfo, info, (void FAR *) endbuffer, - file_offset + byte_count - 1L, 2L); - endbuffer[0] = ((char FAR *) buffer_address)[byte_count - 1L]; - write_xms_store(cinfo, info, (void FAR *) endbuffer, - file_offset + byte_count - 1L, 2L); - } -} - - -METHODDEF(void) -close_xms_store (j_common_ptr cinfo, backing_store_ptr info) -{ - XMScontext ctx; - - ctx.dx = info->handle.xms_handle; - ctx.ax = 0x0a00; - jxms_calldriver(xms_driver, (XMScontext far *) & ctx); - TRACEMS1(cinfo, 1, JTRC_XMS_CLOSE, info->handle.xms_handle); - /* we ignore any error return from the driver */ -} - - -LOCAL(boolean) -open_xms_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - XMScontext ctx; - - /* Get address of XMS driver */ - jxms_getdriver((XMSDRIVER far *) & xms_driver); - if (xms_driver == NULL) - return FALSE; /* no driver to be had */ - - /* Get version number, must be >= 2.00 */ - ctx.ax = 0x0000; - jxms_calldriver(xms_driver, (XMScontext far *) & ctx); - if (ctx.ax < (unsigned short) 0x0200) - return FALSE; - - /* Try to get space (expressed in kilobytes) */ - ctx.dx = (unsigned short) ((total_bytes_needed + 1023L) >> 10); - ctx.ax = 0x0900; - jxms_calldriver(xms_driver, (XMScontext far *) & ctx); - if (ctx.ax != 1) - return FALSE; - - /* Succeeded, save the handle and away we go */ - info->handle.xms_handle = ctx.dx; - info->read_backing_store = read_xms_store; - info->write_backing_store = write_xms_store; - info->close_backing_store = close_xms_store; - TRACEMS1(cinfo, 1, JTRC_XMS_OPEN, ctx.dx); - return TRUE; /* succeeded */ -} - -#endif /* XMS_SUPPORTED */ - - -/* - * Access methods for expanded memory. - */ - -#if EMS_SUPPORTED - -/* The EMS move specification structure requires word and long fields aligned - * at odd byte boundaries. Some compilers will align struct fields at even - * byte boundaries. While it's usually possible to force byte alignment, - * that causes an overall performance penalty and may pose problems in merging - * JPEG into a larger application. Instead we accept some rather dirty code - * here. Note this code would fail if the hardware did not allow odd-byte - * word & long accesses, but all 80x86 CPUs do. - */ - -typedef void far * EMSPTR; - -typedef union { /* EMS move specification structure */ - long length; /* It's easy to access first 4 bytes */ - char bytes[18]; /* Misaligned fields in here! */ - } EMSspec; - -/* Macros for accessing misaligned fields */ -#define FIELD_AT(spec,offset,type) (*((type *) &(spec.bytes[offset]))) -#define SRC_TYPE(spec) FIELD_AT(spec,4,char) -#define SRC_HANDLE(spec) FIELD_AT(spec,5,EMSH) -#define SRC_OFFSET(spec) FIELD_AT(spec,7,unsigned short) -#define SRC_PAGE(spec) FIELD_AT(spec,9,unsigned short) -#define SRC_PTR(spec) FIELD_AT(spec,7,EMSPTR) -#define DST_TYPE(spec) FIELD_AT(spec,11,char) -#define DST_HANDLE(spec) FIELD_AT(spec,12,EMSH) -#define DST_OFFSET(spec) FIELD_AT(spec,14,unsigned short) -#define DST_PAGE(spec) FIELD_AT(spec,16,unsigned short) -#define DST_PTR(spec) FIELD_AT(spec,14,EMSPTR) - -#define EMSPAGESIZE 16384L /* gospel, see the EMS specs */ - -#define HIBYTE(W) (((W) >> 8) & 0xFF) -#define LOBYTE(W) ((W) & 0xFF) - - -METHODDEF(void) -read_ems_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - EMScontext ctx; - EMSspec spec; - - spec.length = byte_count; - SRC_TYPE(spec) = 1; - SRC_HANDLE(spec) = info->handle.ems_handle; - SRC_PAGE(spec) = (unsigned short) (file_offset / EMSPAGESIZE); - SRC_OFFSET(spec) = (unsigned short) (file_offset % EMSPAGESIZE); - DST_TYPE(spec) = 0; - DST_HANDLE(spec) = 0; - DST_PTR(spec) = buffer_address; - - ctx.ds_si = (void far *) & spec; - ctx.ax = 0x5700; /* move memory region */ - jems_calldriver((EMScontext far *) & ctx); - if (HIBYTE(ctx.ax) != 0) - ERREXIT(cinfo, JERR_EMS_READ); -} - - -METHODDEF(void) -write_ems_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - EMScontext ctx; - EMSspec spec; - - spec.length = byte_count; - SRC_TYPE(spec) = 0; - SRC_HANDLE(spec) = 0; - SRC_PTR(spec) = buffer_address; - DST_TYPE(spec) = 1; - DST_HANDLE(spec) = info->handle.ems_handle; - DST_PAGE(spec) = (unsigned short) (file_offset / EMSPAGESIZE); - DST_OFFSET(spec) = (unsigned short) (file_offset % EMSPAGESIZE); - - ctx.ds_si = (void far *) & spec; - ctx.ax = 0x5700; /* move memory region */ - jems_calldriver((EMScontext far *) & ctx); - if (HIBYTE(ctx.ax) != 0) - ERREXIT(cinfo, JERR_EMS_WRITE); -} - - -METHODDEF(void) -close_ems_store (j_common_ptr cinfo, backing_store_ptr info) -{ - EMScontext ctx; - - ctx.ax = 0x4500; - ctx.dx = info->handle.ems_handle; - jems_calldriver((EMScontext far *) & ctx); - TRACEMS1(cinfo, 1, JTRC_EMS_CLOSE, info->handle.ems_handle); - /* we ignore any error return from the driver */ -} - - -LOCAL(boolean) -open_ems_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - EMScontext ctx; - - /* Is EMS driver there? */ - if (! jems_available()) - return FALSE; - - /* Get status, make sure EMS is OK */ - ctx.ax = 0x4000; - jems_calldriver((EMScontext far *) & ctx); - if (HIBYTE(ctx.ax) != 0) - return FALSE; - - /* Get version, must be >= 4.0 */ - ctx.ax = 0x4600; - jems_calldriver((EMScontext far *) & ctx); - if (HIBYTE(ctx.ax) != 0 || LOBYTE(ctx.ax) < 0x40) - return FALSE; - - /* Try to allocate requested space */ - ctx.ax = 0x4300; - ctx.bx = (unsigned short) ((total_bytes_needed + EMSPAGESIZE-1L) / EMSPAGESIZE); - jems_calldriver((EMScontext far *) & ctx); - if (HIBYTE(ctx.ax) != 0) - return FALSE; - - /* Succeeded, save the handle and away we go */ - info->handle.ems_handle = ctx.dx; - info->read_backing_store = read_ems_store; - info->write_backing_store = write_ems_store; - info->close_backing_store = close_ems_store; - TRACEMS1(cinfo, 1, JTRC_EMS_OPEN, ctx.dx); - return TRUE; /* succeeded */ -} - -#endif /* EMS_SUPPORTED */ - - -/* - * Initial opening of a backing-store object. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - /* Try extended memory, then expanded memory, then regular file. */ -#if XMS_SUPPORTED - if (open_xms_store(cinfo, info, total_bytes_needed)) - return; -#endif -#if EMS_SUPPORTED - if (open_ems_store(cinfo, info, total_bytes_needed)) - return; -#endif - if (open_file_store(cinfo, info, total_bytes_needed)) - return; - ERREXITS(cinfo, JERR_TFILE_CREATE, ""); -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - next_file_num = 0; /* initialize temp file name generator */ - return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* Microsoft C, at least in v6.00A, will not successfully reclaim freed - * blocks of size > 32Kbytes unless we give it a kick in the rear, like so: - */ -#ifdef NEED_FHEAPMIN - _fheapmin(); -#endif -} diff --git a/project/jni/jpeg/jmemdosa.asm b/project/jni/jpeg/jmemdosa.asm deleted file mode 100644 index ecd43729f..000000000 --- a/project/jni/jpeg/jmemdosa.asm +++ /dev/null @@ -1,379 +0,0 @@ -; -; jmemdosa.asm -; -; Copyright (C) 1992, Thomas G. Lane. -; This file is part of the Independent JPEG Group's software. -; For conditions of distribution and use, see the accompanying README file. -; -; This file contains low-level interface routines to support the MS-DOS -; backing store manager (jmemdos.c). Routines are provided to access disk -; files through direct DOS calls, and to access XMS and EMS drivers. -; -; This file should assemble with Microsoft's MASM or any compatible -; assembler (including Borland's Turbo Assembler). If you haven't got -; a compatible assembler, better fall back to jmemansi.c or jmemname.c. -; -; To minimize dependence on the C compiler's register usage conventions, -; we save and restore all 8086 registers, even though most compilers only -; require SI,DI,DS to be preserved. Also, we use only 16-bit-wide return -; values, which everybody returns in AX. -; -; Based on code contributed by Ge' Weijers. -; - -JMEMDOSA_TXT segment byte public 'CODE' - - assume cs:JMEMDOSA_TXT - - public _jdos_open - public _jdos_close - public _jdos_seek - public _jdos_read - public _jdos_write - public _jxms_getdriver - public _jxms_calldriver - public _jems_available - public _jems_calldriver - -; -; short far jdos_open (short far * handle, char far * filename) -; -; Create and open a temporary file -; -_jdos_open proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov cx,0 ; normal file attributes - lds dx,dword ptr [bp+10] ; get filename pointer - mov ah,3ch ; create file - int 21h - jc open_err ; if failed, return error code - lds bx,dword ptr [bp+6] ; get handle pointer - mov word ptr [bx],ax ; save the handle - xor ax,ax ; return zero for OK -open_err: pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jdos_open endp - - -; -; short far jdos_close (short handle) -; -; Close the file handle -; -_jdos_close proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov bx,word ptr [bp+6] ; file handle - mov ah,3eh ; close file - int 21h - jc close_err ; if failed, return error code - xor ax,ax ; return zero for OK -close_err: pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jdos_close endp - - -; -; short far jdos_seek (short handle, long offset) -; -; Set file position -; -_jdos_seek proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov bx,word ptr [bp+6] ; file handle - mov dx,word ptr [bp+8] ; LS offset - mov cx,word ptr [bp+10] ; MS offset - mov ax,4200h ; absolute seek - int 21h - jc seek_err ; if failed, return error code - xor ax,ax ; return zero for OK -seek_err: pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jdos_seek endp - - -; -; short far jdos_read (short handle, void far * buffer, unsigned short count) -; -; Read from file -; -_jdos_read proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov bx,word ptr [bp+6] ; file handle - lds dx,dword ptr [bp+8] ; buffer address - mov cx,word ptr [bp+12] ; number of bytes - mov ah,3fh ; read file - int 21h - jc read_err ; if failed, return error code - cmp ax,word ptr [bp+12] ; make sure all bytes were read - je read_ok - mov ax,1 ; else return 1 for not OK - jmp short read_err -read_ok: xor ax,ax ; return zero for OK -read_err: pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jdos_read endp - - -; -; short far jdos_write (short handle, void far * buffer, unsigned short count) -; -; Write to file -; -_jdos_write proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov bx,word ptr [bp+6] ; file handle - lds dx,dword ptr [bp+8] ; buffer address - mov cx,word ptr [bp+12] ; number of bytes - mov ah,40h ; write file - int 21h - jc write_err ; if failed, return error code - cmp ax,word ptr [bp+12] ; make sure all bytes written - je write_ok - mov ax,1 ; else return 1 for not OK - jmp short write_err -write_ok: xor ax,ax ; return zero for OK -write_err: pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jdos_write endp - - -; -; void far jxms_getdriver (XMSDRIVER far *) -; -; Get the address of the XMS driver, or NULL if not available -; -_jxms_getdriver proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov ax,4300h ; call multiplex interrupt with - int 2fh ; a magic cookie, hex 4300 - cmp al,80h ; AL should contain hex 80 - je xmsavail - xor dx,dx ; no XMS driver available - xor ax,ax ; return a nil pointer - jmp short xmsavail_done -xmsavail: mov ax,4310h ; fetch driver address with - int 2fh ; another magic cookie - mov dx,es ; copy address to dx:ax - mov ax,bx -xmsavail_done: les bx,dword ptr [bp+6] ; get pointer to return value - mov word ptr es:[bx],ax - mov word ptr es:[bx+2],dx - pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jxms_getdriver endp - - -; -; void far jxms_calldriver (XMSDRIVER, XMScontext far *) -; -; The XMScontext structure contains values for the AX,DX,BX,SI,DS registers. -; These are loaded, the XMS call is performed, and the new values of the -; AX,DX,BX registers are written back to the context structure. -; -_jxms_calldriver proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - les bx,dword ptr [bp+10] ; get XMScontext pointer - mov ax,word ptr es:[bx] ; load registers - mov dx,word ptr es:[bx+2] - mov si,word ptr es:[bx+6] - mov ds,word ptr es:[bx+8] - mov bx,word ptr es:[bx+4] - call dword ptr [bp+6] ; call the driver - mov cx,bx ; save returned BX for a sec - les bx,dword ptr [bp+10] ; get XMScontext pointer - mov word ptr es:[bx],ax ; put back ax,dx,bx - mov word ptr es:[bx+2],dx - mov word ptr es:[bx+4],cx - pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jxms_calldriver endp - - -; -; short far jems_available (void) -; -; Have we got an EMS driver? (this comes straight from the EMS 4.0 specs) -; -_jems_available proc far - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - mov ax,3567h ; get interrupt vector 67h - int 21h - push cs - pop ds - mov di,000ah ; check offs 10 in returned seg - lea si,ASCII_device_name ; against literal string - mov cx,8 - cld - repe cmpsb - jne no_ems - mov ax,1 ; match, it's there - jmp short avail_done -no_ems: xor ax,ax ; it's not there -avail_done: pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - ret - -ASCII_device_name db "EMMXXXX0" - -_jems_available endp - - -; -; void far jems_calldriver (EMScontext far *) -; -; The EMScontext structure contains values for the AX,DX,BX,SI,DS registers. -; These are loaded, the EMS trap is performed, and the new values of the -; AX,DX,BX registers are written back to the context structure. -; -_jems_calldriver proc far - push bp ; linkage - mov bp,sp - push si ; save all registers for safety - push di - push bx - push cx - push dx - push es - push ds - les bx,dword ptr [bp+6] ; get EMScontext pointer - mov ax,word ptr es:[bx] ; load registers - mov dx,word ptr es:[bx+2] - mov si,word ptr es:[bx+6] - mov ds,word ptr es:[bx+8] - mov bx,word ptr es:[bx+4] - int 67h ; call the EMS driver - mov cx,bx ; save returned BX for a sec - les bx,dword ptr [bp+6] ; get EMScontext pointer - mov word ptr es:[bx],ax ; put back ax,dx,bx - mov word ptr es:[bx+2],dx - mov word ptr es:[bx+4],cx - pop ds ; restore registers and exit - pop es - pop dx - pop cx - pop bx - pop di - pop si - pop bp - ret -_jems_calldriver endp - -JMEMDOSA_TXT ends - - end diff --git a/project/jni/jpeg/jmemmac.c b/project/jni/jpeg/jmemmac.c deleted file mode 100644 index 106f9bea0..000000000 --- a/project/jni/jpeg/jmemmac.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - * jmemmac.c - * - * Copyright (C) 1992-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * jmemmac.c provides an Apple Macintosh implementation of the system- - * dependent portion of the JPEG memory manager. - * - * If you use jmemmac.c, then you must define USE_MAC_MEMMGR in the - * JPEG_INTERNALS part of jconfig.h. - * - * jmemmac.c uses the Macintosh toolbox routines NewPtr and DisposePtr - * instead of malloc and free. It accurately determines the amount of - * memory available by using CompactMem. Notice that if left to its - * own devices, this code can chew up all available space in the - * application's zone, with the exception of the rather small "slop" - * factor computed in jpeg_mem_available(). The application can ensure - * that more space is left over by reducing max_memory_to_use. - * - * Large images are swapped to disk using temporary files and System 7.0+'s - * temporary folder functionality. - * - * Note that jmemmac.c depends on two features of MacOS that were first - * introduced in System 7: FindFolder and the FSSpec-based calls. - * If your application uses jmemmac.c and is run under System 6 or earlier, - * and the jpeg library decides it needs a temporary file, it will abort, - * printing error messages about requiring System 7. (If no temporary files - * are created, it will run fine.) - * - * If you want to use jmemmac.c in an application that might be used with - * System 6 or earlier, then you should remove dependencies on FindFolder - * and the FSSpec calls. You will need to replace FindFolder with some - * other mechanism for finding a place to put temporary files, and you - * should replace the FSSpec calls with their HFS equivalents: - * - * FSpDelete -> HDelete - * FSpGetFInfo -> HGetFInfo - * FSpCreate -> HCreate - * FSpOpenDF -> HOpen *** Note: not HOpenDF *** - * FSMakeFSSpec -> (fill in spec by hand.) - * - * (Use HOpen instead of HOpenDF. HOpen is just a glue-interface to PBHOpen, - * which is on all HFS macs. HOpenDF is a System 7 addition which avoids the - * ages-old problem of names starting with a period.) - * - * Contributed by Sam Bushell (jsam@iagu.on.net) and - * Dan Gildor (gyld@in-touch.com). - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef USE_MAC_MEMMGR /* make sure user got configuration right */ - You forgot to define USE_MAC_MEMMGR in jconfig.h. /* deliberate syntax error */ -#endif - -#include /* we use the MacOS memory manager */ -#include /* we use the MacOS File stuff */ -#include /* we use the MacOS HFS stuff */ -#include /* for smSystemScript */ -#include /* we use Gestalt to test for specific functionality */ - -#ifndef TEMP_FILE_NAME /* can override from jconfig.h or Makefile */ -#define TEMP_FILE_NAME "JPG%03d.TMP" -#endif - -static int next_file_num; /* to distinguish among several temp files */ - - -/* - * Memory allocation and freeing are controlled by the MacOS library - * routines NewPtr() and DisposePtr(), which allocate fixed-address - * storage. Unfortunately, the IJG library isn't smart enough to cope - * with relocatable storage. - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) NewPtr(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - DisposePtr((Ptr) object); -} - - -/* - * "Large" objects are treated the same as "small" ones. - * NB: we include FAR keywords in the routine declarations simply for - * consistency with the rest of the IJG code; FAR should expand to empty - * on rational architectures like the Mac. - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) NewPtr(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - DisposePtr((Ptr) object); -} - - -/* - * This routine computes the total memory space available for allocation. - */ - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - long limit = cinfo->mem->max_memory_to_use - already_allocated; - long slop, mem; - - /* Don't ask for more than what application has told us we may use */ - if (max_bytes_needed > limit && limit > 0) - max_bytes_needed = limit; - /* Find whether there's a big enough free block in the heap. - * CompactMem tries to create a contiguous block of the requested size, - * and then returns the size of the largest free block (which could be - * much more or much less than we asked for). - * We add some slop to ensure we don't use up all available memory. - */ - slop = max_bytes_needed / 16 + 32768L; - mem = CompactMem(max_bytes_needed + slop) - slop; - if (mem < 0) - mem = 0; /* sigh, couldn't even get the slop */ - /* Don't take more than the application says we can have */ - if (mem > limit && limit > 0) - mem = limit; - return mem; -} - - -/* - * Backing store (temporary file) management. - * Backing store objects are only used when the value returned by - * jpeg_mem_available is less than the total space needed. You can dispense - * with these routines if you have plenty of virtual memory; see jmemnobs.c. - */ - - -METHODDEF(void) -read_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - long bytes = byte_count; - long retVal; - - if ( SetFPos ( info->temp_file, fsFromStart, file_offset ) != noErr ) - ERREXIT(cinfo, JERR_TFILE_SEEK); - - retVal = FSRead ( info->temp_file, &bytes, - (unsigned char *) buffer_address ); - if ( retVal != noErr || bytes != byte_count ) - ERREXIT(cinfo, JERR_TFILE_READ); -} - - -METHODDEF(void) -write_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - long bytes = byte_count; - long retVal; - - if ( SetFPos ( info->temp_file, fsFromStart, file_offset ) != noErr ) - ERREXIT(cinfo, JERR_TFILE_SEEK); - - retVal = FSWrite ( info->temp_file, &bytes, - (unsigned char *) buffer_address ); - if ( retVal != noErr || bytes != byte_count ) - ERREXIT(cinfo, JERR_TFILE_WRITE); -} - - -METHODDEF(void) -close_backing_store (j_common_ptr cinfo, backing_store_ptr info) -{ - FSClose ( info->temp_file ); - FSpDelete ( &(info->tempSpec) ); -} - - -/* - * Initial opening of a backing-store object. - * - * This version uses FindFolder to find the Temporary Items folder, - * and puts the temporary file in there. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - short tmpRef, vRefNum; - long dirID; - FInfo finderInfo; - FSSpec theSpec; - Str255 fName; - OSErr osErr; - long gestaltResponse = 0; - - /* Check that FSSpec calls are available. */ - osErr = Gestalt( gestaltFSAttr, &gestaltResponse ); - if ( ( osErr != noErr ) - || !( gestaltResponse & (1<temp_name, TEMP_FILE_NAME, next_file_num); - strcpy ( (Ptr)fName+1, info->temp_name ); - *fName = strlen (info->temp_name); - osErr = FSMakeFSSpec ( vRefNum, dirID, fName, &theSpec ); - - if ( (osErr = FSpGetFInfo ( &theSpec, &finderInfo ) ) != noErr ) - break; - } - - osErr = FSpCreate ( &theSpec, '????', '????', smSystemScript ); - if ( osErr != noErr ) - ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); - - osErr = FSpOpenDF ( &theSpec, fsRdWrPerm, &(info->temp_file) ); - if ( osErr != noErr ) - ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); - - info->tempSpec = theSpec; - - info->read_backing_store = read_backing_store; - info->write_backing_store = write_backing_store; - info->close_backing_store = close_backing_store; - TRACEMSS(cinfo, 1, JTRC_TFILE_OPEN, info->temp_name); -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - next_file_num = 0; - - /* max_memory_to_use will be initialized to FreeMem()'s result; - * the calling application might later reduce it, for example - * to leave room to invoke multiple JPEG objects. - * Note that FreeMem returns the total number of free bytes; - * it may not be possible to allocate a single block of this size. - */ - return FreeMem(); -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* no work */ -} diff --git a/project/jni/jpeg/jmemmgr.c b/project/jni/jpeg/jmemmgr.c deleted file mode 100644 index d801b322d..000000000 --- a/project/jni/jpeg/jmemmgr.c +++ /dev/null @@ -1,1118 +0,0 @@ -/* - * jmemmgr.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the JPEG system-independent memory management - * routines. This code is usable across a wide variety of machines; most - * of the system dependencies have been isolated in a separate file. - * The major functions provided here are: - * * pool-based allocation and freeing of memory; - * * policy decisions about how to divide available memory among the - * virtual arrays; - * * control logic for swapping virtual arrays between main memory and - * backing storage. - * The separate system-dependent file provides the actual backing-storage - * access code, and it contains the policy decision about how much total - * main memory to use. - * This file is system-dependent in the sense that some of its functions - * are unnecessary in some systems. For example, if there is enough virtual - * memory so that backing storage will never be used, much of the virtual - * array control logic could be removed. (Of course, if you have that much - * memory then you shouldn't care about a little bit of unused code...) - */ - -#define JPEG_INTERNALS -#define AM_MEMORY_MANAGER /* we define jvirt_Xarray_control structs */ -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef NO_GETENV -#ifndef HAVE_STDLIB_H /* should declare getenv() */ -extern char * getenv JPP((const char * name)); -#endif -#endif - - -/* - * Some important notes: - * The allocation routines provided here must never return NULL. - * They should exit to error_exit if unsuccessful. - * - * It's not a good idea to try to merge the sarray and barray routines, - * even though they are textually almost the same, because samples are - * usually stored as bytes while coefficients are shorts or ints. Thus, - * in machines where byte pointers have a different representation from - * word pointers, the resulting machine code could not be the same. - */ - - -/* - * Many machines require storage alignment: longs must start on 4-byte - * boundaries, doubles on 8-byte boundaries, etc. On such machines, malloc() - * always returns pointers that are multiples of the worst-case alignment - * requirement, and we had better do so too. - * There isn't any really portable way to determine the worst-case alignment - * requirement. This module assumes that the alignment requirement is - * multiples of sizeof(ALIGN_TYPE). - * By default, we define ALIGN_TYPE as double. This is necessary on some - * workstations (where doubles really do need 8-byte alignment) and will work - * fine on nearly everything. If your machine has lesser alignment needs, - * you can save a few bytes by making ALIGN_TYPE smaller. - * The only place I know of where this will NOT work is certain Macintosh - * 680x0 compilers that define double as a 10-byte IEEE extended float. - * Doing 10-byte alignment is counterproductive because longwords won't be - * aligned well. Put "#define ALIGN_TYPE long" in jconfig.h if you have - * such a compiler. - */ - -#ifndef ALIGN_TYPE /* so can override from jconfig.h */ -#define ALIGN_TYPE double -#endif - - -/* - * We allocate objects from "pools", where each pool is gotten with a single - * request to jpeg_get_small() or jpeg_get_large(). There is no per-object - * overhead within a pool, except for alignment padding. Each pool has a - * header with a link to the next pool of the same class. - * Small and large pool headers are identical except that the latter's - * link pointer must be FAR on 80x86 machines. - * Notice that the "real" header fields are union'ed with a dummy ALIGN_TYPE - * field. This forces the compiler to make SIZEOF(small_pool_hdr) a multiple - * of the alignment requirement of ALIGN_TYPE. - */ - -typedef union small_pool_struct * small_pool_ptr; - -typedef union small_pool_struct { - struct { - small_pool_ptr next; /* next in list of pools */ - size_t bytes_used; /* how many bytes already used within pool */ - size_t bytes_left; /* bytes still available in this pool */ - } hdr; - ALIGN_TYPE dummy; /* included in union to ensure alignment */ -} small_pool_hdr; - -typedef union large_pool_struct FAR * large_pool_ptr; - -typedef union large_pool_struct { - struct { - large_pool_ptr next; /* next in list of pools */ - size_t bytes_used; /* how many bytes already used within pool */ - size_t bytes_left; /* bytes still available in this pool */ - } hdr; - ALIGN_TYPE dummy; /* included in union to ensure alignment */ -} large_pool_hdr; - - -/* - * Here is the full definition of a memory manager object. - */ - -typedef struct { - struct jpeg_memory_mgr pub; /* public fields */ - - /* Each pool identifier (lifetime class) names a linked list of pools. */ - small_pool_ptr small_list[JPOOL_NUMPOOLS]; - large_pool_ptr large_list[JPOOL_NUMPOOLS]; - - /* Since we only have one lifetime class of virtual arrays, only one - * linked list is necessary (for each datatype). Note that the virtual - * array control blocks being linked together are actually stored somewhere - * in the small-pool list. - */ - jvirt_sarray_ptr virt_sarray_list; - jvirt_barray_ptr virt_barray_list; - - /* This counts total space obtained from jpeg_get_small/large */ - long total_space_allocated; - - /* alloc_sarray and alloc_barray set this value for use by virtual - * array routines. - */ - JDIMENSION last_rowsperchunk; /* from most recent alloc_sarray/barray */ -} my_memory_mgr; - -typedef my_memory_mgr * my_mem_ptr; - - -/* - * The control blocks for virtual arrays. - * Note that these blocks are allocated in the "small" pool area. - * System-dependent info for the associated backing store (if any) is hidden - * inside the backing_store_info struct. - */ - -struct jvirt_sarray_control { - JSAMPARRAY mem_buffer; /* => the in-memory buffer */ - JDIMENSION rows_in_array; /* total virtual array height */ - JDIMENSION samplesperrow; /* width of array (and of memory buffer) */ - JDIMENSION maxaccess; /* max rows accessed by access_virt_sarray */ - JDIMENSION rows_in_mem; /* height of memory buffer */ - JDIMENSION rowsperchunk; /* allocation chunk size in mem_buffer */ - JDIMENSION cur_start_row; /* first logical row # in the buffer */ - JDIMENSION first_undef_row; /* row # of first uninitialized row */ - boolean pre_zero; /* pre-zero mode requested? */ - boolean dirty; /* do current buffer contents need written? */ - boolean b_s_open; /* is backing-store data valid? */ - jvirt_sarray_ptr next; /* link to next virtual sarray control block */ - backing_store_info b_s_info; /* System-dependent control info */ -}; - -struct jvirt_barray_control { - JBLOCKARRAY mem_buffer; /* => the in-memory buffer */ - JDIMENSION rows_in_array; /* total virtual array height */ - JDIMENSION blocksperrow; /* width of array (and of memory buffer) */ - JDIMENSION maxaccess; /* max rows accessed by access_virt_barray */ - JDIMENSION rows_in_mem; /* height of memory buffer */ - JDIMENSION rowsperchunk; /* allocation chunk size in mem_buffer */ - JDIMENSION cur_start_row; /* first logical row # in the buffer */ - JDIMENSION first_undef_row; /* row # of first uninitialized row */ - boolean pre_zero; /* pre-zero mode requested? */ - boolean dirty; /* do current buffer contents need written? */ - boolean b_s_open; /* is backing-store data valid? */ - jvirt_barray_ptr next; /* link to next virtual barray control block */ - backing_store_info b_s_info; /* System-dependent control info */ -}; - - -#ifdef MEM_STATS /* optional extra stuff for statistics */ - -LOCAL(void) -print_mem_stats (j_common_ptr cinfo, int pool_id) -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - small_pool_ptr shdr_ptr; - large_pool_ptr lhdr_ptr; - - /* Since this is only a debugging stub, we can cheat a little by using - * fprintf directly rather than going through the trace message code. - * This is helpful because message parm array can't handle longs. - */ - fprintf(stderr, "Freeing pool %d, total space = %ld\n", - pool_id, mem->total_space_allocated); - - for (lhdr_ptr = mem->large_list[pool_id]; lhdr_ptr != NULL; - lhdr_ptr = lhdr_ptr->hdr.next) { - fprintf(stderr, " Large chunk used %ld\n", - (long) lhdr_ptr->hdr.bytes_used); - } - - for (shdr_ptr = mem->small_list[pool_id]; shdr_ptr != NULL; - shdr_ptr = shdr_ptr->hdr.next) { - fprintf(stderr, " Small chunk used %ld free %ld\n", - (long) shdr_ptr->hdr.bytes_used, - (long) shdr_ptr->hdr.bytes_left); - } -} - -#endif /* MEM_STATS */ - - -LOCAL(void) -out_of_memory (j_common_ptr cinfo, int which) -/* Report an out-of-memory error and stop execution */ -/* If we compiled MEM_STATS support, report alloc requests before dying */ -{ -#ifdef MEM_STATS - cinfo->err->trace_level = 2; /* force self_destruct to report stats */ -#endif - ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, which); -} - - -/* - * Allocation of "small" objects. - * - * For these, we use pooled storage. When a new pool must be created, - * we try to get enough space for the current request plus a "slop" factor, - * where the slop will be the amount of leftover space in the new pool. - * The speed vs. space tradeoff is largely determined by the slop values. - * A different slop value is provided for each pool class (lifetime), - * and we also distinguish the first pool of a class from later ones. - * NOTE: the values given work fairly well on both 16- and 32-bit-int - * machines, but may be too small if longs are 64 bits or more. - */ - -static const size_t first_pool_slop[JPOOL_NUMPOOLS] = -{ - 1600, /* first PERMANENT pool */ - 16000 /* first IMAGE pool */ -}; - -static const size_t extra_pool_slop[JPOOL_NUMPOOLS] = -{ - 0, /* additional PERMANENT pools */ - 5000 /* additional IMAGE pools */ -}; - -#define MIN_SLOP 50 /* greater than 0 to avoid futile looping */ - - -METHODDEF(void *) -alloc_small (j_common_ptr cinfo, int pool_id, size_t sizeofobject) -/* Allocate a "small" object */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - small_pool_ptr hdr_ptr, prev_hdr_ptr; - char * data_ptr; - size_t odd_bytes, min_request, slop; - - /* Check for unsatisfiable request (do now to ensure no overflow below) */ - if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(small_pool_hdr))) - out_of_memory(cinfo, 1); /* request exceeds malloc's ability */ - - /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */ - odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE); - if (odd_bytes > 0) - sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes; - - /* See if space is available in any existing pool */ - if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS) - ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ - prev_hdr_ptr = NULL; - hdr_ptr = mem->small_list[pool_id]; - while (hdr_ptr != NULL) { - if (hdr_ptr->hdr.bytes_left >= sizeofobject) - break; /* found pool with enough space */ - prev_hdr_ptr = hdr_ptr; - hdr_ptr = hdr_ptr->hdr.next; - } - - /* Time to make a new pool? */ - if (hdr_ptr == NULL) { - /* min_request is what we need now, slop is what will be leftover */ - min_request = sizeofobject + SIZEOF(small_pool_hdr); - if (prev_hdr_ptr == NULL) /* first pool in class? */ - slop = first_pool_slop[pool_id]; - else - slop = extra_pool_slop[pool_id]; - /* Don't ask for more than MAX_ALLOC_CHUNK */ - if (slop > (size_t) (MAX_ALLOC_CHUNK-min_request)) - slop = (size_t) (MAX_ALLOC_CHUNK-min_request); - /* Try to get space, if fail reduce slop and try again */ - for (;;) { - hdr_ptr = (small_pool_ptr) jpeg_get_small(cinfo, min_request + slop); - if (hdr_ptr != NULL) - break; - slop /= 2; - if (slop < MIN_SLOP) /* give up when it gets real small */ - out_of_memory(cinfo, 2); /* jpeg_get_small failed */ - } - mem->total_space_allocated += min_request + slop; - /* Success, initialize the new pool header and add to end of list */ - hdr_ptr->hdr.next = NULL; - hdr_ptr->hdr.bytes_used = 0; - hdr_ptr->hdr.bytes_left = sizeofobject + slop; - if (prev_hdr_ptr == NULL) /* first pool in class? */ - mem->small_list[pool_id] = hdr_ptr; - else - prev_hdr_ptr->hdr.next = hdr_ptr; - } - - /* OK, allocate the object from the current pool */ - data_ptr = (char *) (hdr_ptr + 1); /* point to first data byte in pool */ - data_ptr += hdr_ptr->hdr.bytes_used; /* point to place for object */ - hdr_ptr->hdr.bytes_used += sizeofobject; - hdr_ptr->hdr.bytes_left -= sizeofobject; - - return (void *) data_ptr; -} - - -/* - * Allocation of "large" objects. - * - * The external semantics of these are the same as "small" objects, - * except that FAR pointers are used on 80x86. However the pool - * management heuristics are quite different. We assume that each - * request is large enough that it may as well be passed directly to - * jpeg_get_large; the pool management just links everything together - * so that we can free it all on demand. - * Note: the major use of "large" objects is in JSAMPARRAY and JBLOCKARRAY - * structures. The routines that create these structures (see below) - * deliberately bunch rows together to ensure a large request size. - */ - -METHODDEF(void FAR *) -alloc_large (j_common_ptr cinfo, int pool_id, size_t sizeofobject) -/* Allocate a "large" object */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - large_pool_ptr hdr_ptr; - size_t odd_bytes; - - /* Check for unsatisfiable request (do now to ensure no overflow below) */ - if (sizeofobject > (size_t) (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr))) - out_of_memory(cinfo, 3); /* request exceeds malloc's ability */ - - /* Round up the requested size to a multiple of SIZEOF(ALIGN_TYPE) */ - odd_bytes = sizeofobject % SIZEOF(ALIGN_TYPE); - if (odd_bytes > 0) - sizeofobject += SIZEOF(ALIGN_TYPE) - odd_bytes; - - /* Always make a new pool */ - if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS) - ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ - - hdr_ptr = (large_pool_ptr) jpeg_get_large(cinfo, sizeofobject + - SIZEOF(large_pool_hdr)); - if (hdr_ptr == NULL) - out_of_memory(cinfo, 4); /* jpeg_get_large failed */ - mem->total_space_allocated += sizeofobject + SIZEOF(large_pool_hdr); - - /* Success, initialize the new pool header and add to list */ - hdr_ptr->hdr.next = mem->large_list[pool_id]; - /* We maintain space counts in each pool header for statistical purposes, - * even though they are not needed for allocation. - */ - hdr_ptr->hdr.bytes_used = sizeofobject; - hdr_ptr->hdr.bytes_left = 0; - mem->large_list[pool_id] = hdr_ptr; - - return (void FAR *) (hdr_ptr + 1); /* point to first data byte in pool */ -} - - -/* - * Creation of 2-D sample arrays. - * The pointers are in near heap, the samples themselves in FAR heap. - * - * To minimize allocation overhead and to allow I/O of large contiguous - * blocks, we allocate the sample rows in groups of as many rows as possible - * without exceeding MAX_ALLOC_CHUNK total bytes per allocation request. - * NB: the virtual array control routines, later in this file, know about - * this chunking of rows. The rowsperchunk value is left in the mem manager - * object so that it can be saved away if this sarray is the workspace for - * a virtual array. - */ - -METHODDEF(JSAMPARRAY) -alloc_sarray (j_common_ptr cinfo, int pool_id, - JDIMENSION samplesperrow, JDIMENSION numrows) -/* Allocate a 2-D sample array */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - JSAMPARRAY result; - JSAMPROW workspace; - JDIMENSION rowsperchunk, currow, i; - long ltemp; - - /* Calculate max # of rows allowed in one allocation chunk */ - ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) / - ((long) samplesperrow * SIZEOF(JSAMPLE)); - if (ltemp <= 0) - ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); - if (ltemp < (long) numrows) - rowsperchunk = (JDIMENSION) ltemp; - else - rowsperchunk = numrows; - mem->last_rowsperchunk = rowsperchunk; - - /* Get space for row pointers (small object) */ - result = (JSAMPARRAY) alloc_small(cinfo, pool_id, - (size_t) (numrows * SIZEOF(JSAMPROW))); - - /* Get the rows themselves (large objects) */ - currow = 0; - while (currow < numrows) { - rowsperchunk = MIN(rowsperchunk, numrows - currow); - workspace = (JSAMPROW) alloc_large(cinfo, pool_id, - (size_t) ((size_t) rowsperchunk * (size_t) samplesperrow - * SIZEOF(JSAMPLE))); - for (i = rowsperchunk; i > 0; i--) { - result[currow++] = workspace; - workspace += samplesperrow; - } - } - - return result; -} - - -/* - * Creation of 2-D coefficient-block arrays. - * This is essentially the same as the code for sample arrays, above. - */ - -METHODDEF(JBLOCKARRAY) -alloc_barray (j_common_ptr cinfo, int pool_id, - JDIMENSION blocksperrow, JDIMENSION numrows) -/* Allocate a 2-D coefficient-block array */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - JBLOCKARRAY result; - JBLOCKROW workspace; - JDIMENSION rowsperchunk, currow, i; - long ltemp; - - /* Calculate max # of rows allowed in one allocation chunk */ - ltemp = (MAX_ALLOC_CHUNK-SIZEOF(large_pool_hdr)) / - ((long) blocksperrow * SIZEOF(JBLOCK)); - if (ltemp <= 0) - ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); - if (ltemp < (long) numrows) - rowsperchunk = (JDIMENSION) ltemp; - else - rowsperchunk = numrows; - mem->last_rowsperchunk = rowsperchunk; - - /* Get space for row pointers (small object) */ - result = (JBLOCKARRAY) alloc_small(cinfo, pool_id, - (size_t) (numrows * SIZEOF(JBLOCKROW))); - - /* Get the rows themselves (large objects) */ - currow = 0; - while (currow < numrows) { - rowsperchunk = MIN(rowsperchunk, numrows - currow); - workspace = (JBLOCKROW) alloc_large(cinfo, pool_id, - (size_t) ((size_t) rowsperchunk * (size_t) blocksperrow - * SIZEOF(JBLOCK))); - for (i = rowsperchunk; i > 0; i--) { - result[currow++] = workspace; - workspace += blocksperrow; - } - } - - return result; -} - - -/* - * About virtual array management: - * - * The above "normal" array routines are only used to allocate strip buffers - * (as wide as the image, but just a few rows high). Full-image-sized buffers - * are handled as "virtual" arrays. The array is still accessed a strip at a - * time, but the memory manager must save the whole array for repeated - * accesses. The intended implementation is that there is a strip buffer in - * memory (as high as is possible given the desired memory limit), plus a - * backing file that holds the rest of the array. - * - * The request_virt_array routines are told the total size of the image and - * the maximum number of rows that will be accessed at once. The in-memory - * buffer must be at least as large as the maxaccess value. - * - * The request routines create control blocks but not the in-memory buffers. - * That is postponed until realize_virt_arrays is called. At that time the - * total amount of space needed is known (approximately, anyway), so free - * memory can be divided up fairly. - * - * The access_virt_array routines are responsible for making a specific strip - * area accessible (after reading or writing the backing file, if necessary). - * Note that the access routines are told whether the caller intends to modify - * the accessed strip; during a read-only pass this saves having to rewrite - * data to disk. The access routines are also responsible for pre-zeroing - * any newly accessed rows, if pre-zeroing was requested. - * - * In current usage, the access requests are usually for nonoverlapping - * strips; that is, successive access start_row numbers differ by exactly - * num_rows = maxaccess. This means we can get good performance with simple - * buffer dump/reload logic, by making the in-memory buffer be a multiple - * of the access height; then there will never be accesses across bufferload - * boundaries. The code will still work with overlapping access requests, - * but it doesn't handle bufferload overlaps very efficiently. - */ - - -METHODDEF(jvirt_sarray_ptr) -request_virt_sarray (j_common_ptr cinfo, int pool_id, boolean pre_zero, - JDIMENSION samplesperrow, JDIMENSION numrows, - JDIMENSION maxaccess) -/* Request a virtual 2-D sample array */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - jvirt_sarray_ptr result; - - /* Only IMAGE-lifetime virtual arrays are currently supported */ - if (pool_id != JPOOL_IMAGE) - ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ - - /* get control block */ - result = (jvirt_sarray_ptr) alloc_small(cinfo, pool_id, - SIZEOF(struct jvirt_sarray_control)); - - result->mem_buffer = NULL; /* marks array not yet realized */ - result->rows_in_array = numrows; - result->samplesperrow = samplesperrow; - result->maxaccess = maxaccess; - result->pre_zero = pre_zero; - result->b_s_open = FALSE; /* no associated backing-store object */ - result->next = mem->virt_sarray_list; /* add to list of virtual arrays */ - mem->virt_sarray_list = result; - - return result; -} - - -METHODDEF(jvirt_barray_ptr) -request_virt_barray (j_common_ptr cinfo, int pool_id, boolean pre_zero, - JDIMENSION blocksperrow, JDIMENSION numrows, - JDIMENSION maxaccess) -/* Request a virtual 2-D coefficient-block array */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - jvirt_barray_ptr result; - - /* Only IMAGE-lifetime virtual arrays are currently supported */ - if (pool_id != JPOOL_IMAGE) - ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ - - /* get control block */ - result = (jvirt_barray_ptr) alloc_small(cinfo, pool_id, - SIZEOF(struct jvirt_barray_control)); - - result->mem_buffer = NULL; /* marks array not yet realized */ - result->rows_in_array = numrows; - result->blocksperrow = blocksperrow; - result->maxaccess = maxaccess; - result->pre_zero = pre_zero; - result->b_s_open = FALSE; /* no associated backing-store object */ - result->next = mem->virt_barray_list; /* add to list of virtual arrays */ - mem->virt_barray_list = result; - - return result; -} - - -METHODDEF(void) -realize_virt_arrays (j_common_ptr cinfo) -/* Allocate the in-memory buffers for any unrealized virtual arrays */ -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - long space_per_minheight, maximum_space, avail_mem; - long minheights, max_minheights; - jvirt_sarray_ptr sptr; - jvirt_barray_ptr bptr; - - /* Compute the minimum space needed (maxaccess rows in each buffer) - * and the maximum space needed (full image height in each buffer). - * These may be of use to the system-dependent jpeg_mem_available routine. - */ - space_per_minheight = 0; - maximum_space = 0; - for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) { - if (sptr->mem_buffer == NULL) { /* if not realized yet */ - space_per_minheight += (long) sptr->maxaccess * - (long) sptr->samplesperrow * SIZEOF(JSAMPLE); - maximum_space += (long) sptr->rows_in_array * - (long) sptr->samplesperrow * SIZEOF(JSAMPLE); - } - } - for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) { - if (bptr->mem_buffer == NULL) { /* if not realized yet */ - space_per_minheight += (long) bptr->maxaccess * - (long) bptr->blocksperrow * SIZEOF(JBLOCK); - maximum_space += (long) bptr->rows_in_array * - (long) bptr->blocksperrow * SIZEOF(JBLOCK); - } - } - - if (space_per_minheight <= 0) - return; /* no unrealized arrays, no work */ - - /* Determine amount of memory to actually use; this is system-dependent. */ - avail_mem = jpeg_mem_available(cinfo, space_per_minheight, maximum_space, - mem->total_space_allocated); - - /* If the maximum space needed is available, make all the buffers full - * height; otherwise parcel it out with the same number of minheights - * in each buffer. - */ - if (avail_mem >= maximum_space) - max_minheights = 1000000000L; - else { - max_minheights = avail_mem / space_per_minheight; - /* If there doesn't seem to be enough space, try to get the minimum - * anyway. This allows a "stub" implementation of jpeg_mem_available(). - */ - if (max_minheights <= 0) - max_minheights = 1; - } - - /* Allocate the in-memory buffers and initialize backing store as needed. */ - - for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) { - if (sptr->mem_buffer == NULL) { /* if not realized yet */ - minheights = ((long) sptr->rows_in_array - 1L) / sptr->maxaccess + 1L; - if (minheights <= max_minheights) { - /* This buffer fits in memory */ - sptr->rows_in_mem = sptr->rows_in_array; - } else { - /* It doesn't fit in memory, create backing store. */ - sptr->rows_in_mem = (JDIMENSION) (max_minheights * sptr->maxaccess); - jpeg_open_backing_store(cinfo, & sptr->b_s_info, - (long) sptr->rows_in_array * - (long) sptr->samplesperrow * - (long) SIZEOF(JSAMPLE)); - sptr->b_s_open = TRUE; - } - sptr->mem_buffer = alloc_sarray(cinfo, JPOOL_IMAGE, - sptr->samplesperrow, sptr->rows_in_mem); - sptr->rowsperchunk = mem->last_rowsperchunk; - sptr->cur_start_row = 0; - sptr->first_undef_row = 0; - sptr->dirty = FALSE; - } - } - - for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) { - if (bptr->mem_buffer == NULL) { /* if not realized yet */ - minheights = ((long) bptr->rows_in_array - 1L) / bptr->maxaccess + 1L; - if (minheights <= max_minheights) { - /* This buffer fits in memory */ - bptr->rows_in_mem = bptr->rows_in_array; - } else { - /* It doesn't fit in memory, create backing store. */ - bptr->rows_in_mem = (JDIMENSION) (max_minheights * bptr->maxaccess); - jpeg_open_backing_store(cinfo, & bptr->b_s_info, - (long) bptr->rows_in_array * - (long) bptr->blocksperrow * - (long) SIZEOF(JBLOCK)); - bptr->b_s_open = TRUE; - } - bptr->mem_buffer = alloc_barray(cinfo, JPOOL_IMAGE, - bptr->blocksperrow, bptr->rows_in_mem); - bptr->rowsperchunk = mem->last_rowsperchunk; - bptr->cur_start_row = 0; - bptr->first_undef_row = 0; - bptr->dirty = FALSE; - } - } -} - - -LOCAL(void) -do_sarray_io (j_common_ptr cinfo, jvirt_sarray_ptr ptr, boolean writing) -/* Do backing store read or write of a virtual sample array */ -{ - long bytesperrow, file_offset, byte_count, rows, thisrow, i; - - bytesperrow = (long) ptr->samplesperrow * SIZEOF(JSAMPLE); - file_offset = ptr->cur_start_row * bytesperrow; - /* Loop to read or write each allocation chunk in mem_buffer */ - for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) { - /* One chunk, but check for short chunk at end of buffer */ - rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i); - /* Transfer no more than is currently defined */ - thisrow = (long) ptr->cur_start_row + i; - rows = MIN(rows, (long) ptr->first_undef_row - thisrow); - /* Transfer no more than fits in file */ - rows = MIN(rows, (long) ptr->rows_in_array - thisrow); - if (rows <= 0) /* this chunk might be past end of file! */ - break; - byte_count = rows * bytesperrow; - if (writing) - (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info, - (void FAR *) ptr->mem_buffer[i], - file_offset, byte_count); - else - (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info, - (void FAR *) ptr->mem_buffer[i], - file_offset, byte_count); - file_offset += byte_count; - } -} - - -LOCAL(void) -do_barray_io (j_common_ptr cinfo, jvirt_barray_ptr ptr, boolean writing) -/* Do backing store read or write of a virtual coefficient-block array */ -{ - long bytesperrow, file_offset, byte_count, rows, thisrow, i; - - bytesperrow = (long) ptr->blocksperrow * SIZEOF(JBLOCK); - file_offset = ptr->cur_start_row * bytesperrow; - /* Loop to read or write each allocation chunk in mem_buffer */ - for (i = 0; i < (long) ptr->rows_in_mem; i += ptr->rowsperchunk) { - /* One chunk, but check for short chunk at end of buffer */ - rows = MIN((long) ptr->rowsperchunk, (long) ptr->rows_in_mem - i); - /* Transfer no more than is currently defined */ - thisrow = (long) ptr->cur_start_row + i; - rows = MIN(rows, (long) ptr->first_undef_row - thisrow); - /* Transfer no more than fits in file */ - rows = MIN(rows, (long) ptr->rows_in_array - thisrow); - if (rows <= 0) /* this chunk might be past end of file! */ - break; - byte_count = rows * bytesperrow; - if (writing) - (*ptr->b_s_info.write_backing_store) (cinfo, & ptr->b_s_info, - (void FAR *) ptr->mem_buffer[i], - file_offset, byte_count); - else - (*ptr->b_s_info.read_backing_store) (cinfo, & ptr->b_s_info, - (void FAR *) ptr->mem_buffer[i], - file_offset, byte_count); - file_offset += byte_count; - } -} - - -METHODDEF(JSAMPARRAY) -access_virt_sarray (j_common_ptr cinfo, jvirt_sarray_ptr ptr, - JDIMENSION start_row, JDIMENSION num_rows, - boolean writable) -/* Access the part of a virtual sample array starting at start_row */ -/* and extending for num_rows rows. writable is true if */ -/* caller intends to modify the accessed area. */ -{ - JDIMENSION end_row = start_row + num_rows; - JDIMENSION undef_row; - - /* debugging check */ - if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess || - ptr->mem_buffer == NULL) - ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); - - /* Make the desired part of the virtual array accessible */ - if (start_row < ptr->cur_start_row || - end_row > ptr->cur_start_row+ptr->rows_in_mem) { - if (! ptr->b_s_open) - ERREXIT(cinfo, JERR_VIRTUAL_BUG); - /* Flush old buffer contents if necessary */ - if (ptr->dirty) { - do_sarray_io(cinfo, ptr, TRUE); - ptr->dirty = FALSE; - } - /* Decide what part of virtual array to access. - * Algorithm: if target address > current window, assume forward scan, - * load starting at target address. If target address < current window, - * assume backward scan, load so that target area is top of window. - * Note that when switching from forward write to forward read, will have - * start_row = 0, so the limiting case applies and we load from 0 anyway. - */ - if (start_row > ptr->cur_start_row) { - ptr->cur_start_row = start_row; - } else { - /* use long arithmetic here to avoid overflow & unsigned problems */ - long ltemp; - - ltemp = (long) end_row - (long) ptr->rows_in_mem; - if (ltemp < 0) - ltemp = 0; /* don't fall off front end of file */ - ptr->cur_start_row = (JDIMENSION) ltemp; - } - /* Read in the selected part of the array. - * During the initial write pass, we will do no actual read - * because the selected part is all undefined. - */ - do_sarray_io(cinfo, ptr, FALSE); - } - /* Ensure the accessed part of the array is defined; prezero if needed. - * To improve locality of access, we only prezero the part of the array - * that the caller is about to access, not the entire in-memory array. - */ - if (ptr->first_undef_row < end_row) { - if (ptr->first_undef_row < start_row) { - if (writable) /* writer skipped over a section of array */ - ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); - undef_row = start_row; /* but reader is allowed to read ahead */ - } else { - undef_row = ptr->first_undef_row; - } - if (writable) - ptr->first_undef_row = end_row; - if (ptr->pre_zero) { - size_t bytesperrow = (size_t) ptr->samplesperrow * SIZEOF(JSAMPLE); - undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */ - end_row -= ptr->cur_start_row; - while (undef_row < end_row) { - jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow); - undef_row++; - } - } else { - if (! writable) /* reader looking at undefined data */ - ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); - } - } - /* Flag the buffer dirty if caller will write in it */ - if (writable) - ptr->dirty = TRUE; - /* Return address of proper part of the buffer */ - return ptr->mem_buffer + (start_row - ptr->cur_start_row); -} - - -METHODDEF(JBLOCKARRAY) -access_virt_barray (j_common_ptr cinfo, jvirt_barray_ptr ptr, - JDIMENSION start_row, JDIMENSION num_rows, - boolean writable) -/* Access the part of a virtual block array starting at start_row */ -/* and extending for num_rows rows. writable is true if */ -/* caller intends to modify the accessed area. */ -{ - JDIMENSION end_row = start_row + num_rows; - JDIMENSION undef_row; - - /* debugging check */ - if (end_row > ptr->rows_in_array || num_rows > ptr->maxaccess || - ptr->mem_buffer == NULL) - ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); - - /* Make the desired part of the virtual array accessible */ - if (start_row < ptr->cur_start_row || - end_row > ptr->cur_start_row+ptr->rows_in_mem) { - if (! ptr->b_s_open) - ERREXIT(cinfo, JERR_VIRTUAL_BUG); - /* Flush old buffer contents if necessary */ - if (ptr->dirty) { - do_barray_io(cinfo, ptr, TRUE); - ptr->dirty = FALSE; - } - /* Decide what part of virtual array to access. - * Algorithm: if target address > current window, assume forward scan, - * load starting at target address. If target address < current window, - * assume backward scan, load so that target area is top of window. - * Note that when switching from forward write to forward read, will have - * start_row = 0, so the limiting case applies and we load from 0 anyway. - */ - if (start_row > ptr->cur_start_row) { - ptr->cur_start_row = start_row; - } else { - /* use long arithmetic here to avoid overflow & unsigned problems */ - long ltemp; - - ltemp = (long) end_row - (long) ptr->rows_in_mem; - if (ltemp < 0) - ltemp = 0; /* don't fall off front end of file */ - ptr->cur_start_row = (JDIMENSION) ltemp; - } - /* Read in the selected part of the array. - * During the initial write pass, we will do no actual read - * because the selected part is all undefined. - */ - do_barray_io(cinfo, ptr, FALSE); - } - /* Ensure the accessed part of the array is defined; prezero if needed. - * To improve locality of access, we only prezero the part of the array - * that the caller is about to access, not the entire in-memory array. - */ - if (ptr->first_undef_row < end_row) { - if (ptr->first_undef_row < start_row) { - if (writable) /* writer skipped over a section of array */ - ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); - undef_row = start_row; /* but reader is allowed to read ahead */ - } else { - undef_row = ptr->first_undef_row; - } - if (writable) - ptr->first_undef_row = end_row; - if (ptr->pre_zero) { - size_t bytesperrow = (size_t) ptr->blocksperrow * SIZEOF(JBLOCK); - undef_row -= ptr->cur_start_row; /* make indexes relative to buffer */ - end_row -= ptr->cur_start_row; - while (undef_row < end_row) { - jzero_far((void FAR *) ptr->mem_buffer[undef_row], bytesperrow); - undef_row++; - } - } else { - if (! writable) /* reader looking at undefined data */ - ERREXIT(cinfo, JERR_BAD_VIRTUAL_ACCESS); - } - } - /* Flag the buffer dirty if caller will write in it */ - if (writable) - ptr->dirty = TRUE; - /* Return address of proper part of the buffer */ - return ptr->mem_buffer + (start_row - ptr->cur_start_row); -} - - -/* - * Release all objects belonging to a specified pool. - */ - -METHODDEF(void) -free_pool (j_common_ptr cinfo, int pool_id) -{ - my_mem_ptr mem = (my_mem_ptr) cinfo->mem; - small_pool_ptr shdr_ptr; - large_pool_ptr lhdr_ptr; - size_t space_freed; - - if (pool_id < 0 || pool_id >= JPOOL_NUMPOOLS) - ERREXIT1(cinfo, JERR_BAD_POOL_ID, pool_id); /* safety check */ - -#ifdef MEM_STATS - if (cinfo->err->trace_level > 1) - print_mem_stats(cinfo, pool_id); /* print pool's memory usage statistics */ -#endif - - /* If freeing IMAGE pool, close any virtual arrays first */ - if (pool_id == JPOOL_IMAGE) { - jvirt_sarray_ptr sptr; - jvirt_barray_ptr bptr; - - for (sptr = mem->virt_sarray_list; sptr != NULL; sptr = sptr->next) { - if (sptr->b_s_open) { /* there may be no backing store */ - sptr->b_s_open = FALSE; /* prevent recursive close if error */ - (*sptr->b_s_info.close_backing_store) (cinfo, & sptr->b_s_info); - } - } - mem->virt_sarray_list = NULL; - for (bptr = mem->virt_barray_list; bptr != NULL; bptr = bptr->next) { - if (bptr->b_s_open) { /* there may be no backing store */ - bptr->b_s_open = FALSE; /* prevent recursive close if error */ - (*bptr->b_s_info.close_backing_store) (cinfo, & bptr->b_s_info); - } - } - mem->virt_barray_list = NULL; - } - - /* Release large objects */ - lhdr_ptr = mem->large_list[pool_id]; - mem->large_list[pool_id] = NULL; - - while (lhdr_ptr != NULL) { - large_pool_ptr next_lhdr_ptr = lhdr_ptr->hdr.next; - space_freed = lhdr_ptr->hdr.bytes_used + - lhdr_ptr->hdr.bytes_left + - SIZEOF(large_pool_hdr); - jpeg_free_large(cinfo, (void FAR *) lhdr_ptr, space_freed); - mem->total_space_allocated -= space_freed; - lhdr_ptr = next_lhdr_ptr; - } - - /* Release small objects */ - shdr_ptr = mem->small_list[pool_id]; - mem->small_list[pool_id] = NULL; - - while (shdr_ptr != NULL) { - small_pool_ptr next_shdr_ptr = shdr_ptr->hdr.next; - space_freed = shdr_ptr->hdr.bytes_used + - shdr_ptr->hdr.bytes_left + - SIZEOF(small_pool_hdr); - jpeg_free_small(cinfo, (void *) shdr_ptr, space_freed); - mem->total_space_allocated -= space_freed; - shdr_ptr = next_shdr_ptr; - } -} - - -/* - * Close up shop entirely. - * Note that this cannot be called unless cinfo->mem is non-NULL. - */ - -METHODDEF(void) -self_destruct (j_common_ptr cinfo) -{ - int pool; - - /* Close all backing store, release all memory. - * Releasing pools in reverse order might help avoid fragmentation - * with some (brain-damaged) malloc libraries. - */ - for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) { - free_pool(cinfo, pool); - } - - /* Release the memory manager control block too. */ - jpeg_free_small(cinfo, (void *) cinfo->mem, SIZEOF(my_memory_mgr)); - cinfo->mem = NULL; /* ensures I will be called only once */ - - jpeg_mem_term(cinfo); /* system-dependent cleanup */ -} - - -/* - * Memory manager initialization. - * When this is called, only the error manager pointer is valid in cinfo! - */ - -GLOBAL(void) -jinit_memory_mgr (j_common_ptr cinfo) -{ - my_mem_ptr mem; - long max_to_use; - int pool; - size_t test_mac; - - cinfo->mem = NULL; /* for safety if init fails */ - - /* Check for configuration errors. - * SIZEOF(ALIGN_TYPE) should be a power of 2; otherwise, it probably - * doesn't reflect any real hardware alignment requirement. - * The test is a little tricky: for X>0, X and X-1 have no one-bits - * in common if and only if X is a power of 2, ie has only one one-bit. - * Some compilers may give an "unreachable code" warning here; ignore it. - */ - if ((SIZEOF(ALIGN_TYPE) & (SIZEOF(ALIGN_TYPE)-1)) != 0) - ERREXIT(cinfo, JERR_BAD_ALIGN_TYPE); - /* MAX_ALLOC_CHUNK must be representable as type size_t, and must be - * a multiple of SIZEOF(ALIGN_TYPE). - * Again, an "unreachable code" warning may be ignored here. - * But a "constant too large" warning means you need to fix MAX_ALLOC_CHUNK. - */ - test_mac = (size_t) MAX_ALLOC_CHUNK; - if ((long) test_mac != MAX_ALLOC_CHUNK || - (MAX_ALLOC_CHUNK % SIZEOF(ALIGN_TYPE)) != 0) - ERREXIT(cinfo, JERR_BAD_ALLOC_CHUNK); - - max_to_use = jpeg_mem_init(cinfo); /* system-dependent initialization */ - - /* Attempt to allocate memory manager's control block */ - mem = (my_mem_ptr) jpeg_get_small(cinfo, SIZEOF(my_memory_mgr)); - - if (mem == NULL) { - jpeg_mem_term(cinfo); /* system-dependent cleanup */ - ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 0); - } - - /* OK, fill in the method pointers */ - mem->pub.alloc_small = alloc_small; - mem->pub.alloc_large = alloc_large; - mem->pub.alloc_sarray = alloc_sarray; - mem->pub.alloc_barray = alloc_barray; - mem->pub.request_virt_sarray = request_virt_sarray; - mem->pub.request_virt_barray = request_virt_barray; - mem->pub.realize_virt_arrays = realize_virt_arrays; - mem->pub.access_virt_sarray = access_virt_sarray; - mem->pub.access_virt_barray = access_virt_barray; - mem->pub.free_pool = free_pool; - mem->pub.self_destruct = self_destruct; - - /* Make MAX_ALLOC_CHUNK accessible to other modules */ - mem->pub.max_alloc_chunk = MAX_ALLOC_CHUNK; - - /* Initialize working state */ - mem->pub.max_memory_to_use = max_to_use; - - for (pool = JPOOL_NUMPOOLS-1; pool >= JPOOL_PERMANENT; pool--) { - mem->small_list[pool] = NULL; - mem->large_list[pool] = NULL; - } - mem->virt_sarray_list = NULL; - mem->virt_barray_list = NULL; - - mem->total_space_allocated = SIZEOF(my_memory_mgr); - - /* Declare ourselves open for business */ - cinfo->mem = & mem->pub; - - /* Check for an environment variable JPEGMEM; if found, override the - * default max_memory setting from jpeg_mem_init. Note that the - * surrounding application may again override this value. - * If your system doesn't support getenv(), define NO_GETENV to disable - * this feature. - */ -#ifndef NO_GETENV - { char * memenv; - - if ((memenv = getenv("JPEGMEM")) != NULL) { - char ch = 'x'; - - if (sscanf(memenv, "%ld%c", &max_to_use, &ch) > 0) { - if (ch == 'm' || ch == 'M') - max_to_use *= 1000L; - mem->pub.max_memory_to_use = max_to_use * 1000L; - } - } - } -#endif - -} diff --git a/project/jni/jpeg/jmemname.c b/project/jni/jpeg/jmemname.c deleted file mode 100644 index ed96dee1b..000000000 --- a/project/jni/jpeg/jmemname.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * jmemname.c - * - * Copyright (C) 1992-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file provides a generic implementation of the system-dependent - * portion of the JPEG memory manager. This implementation assumes that - * you must explicitly construct a name for each temp file. - * Also, the problem of determining the amount of memory available - * is shoved onto the user. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef HAVE_STDLIB_H /* should declare malloc(),free() */ -extern void * malloc JPP((size_t size)); -extern void free JPP((void *ptr)); -#endif - -#ifndef SEEK_SET /* pre-ANSI systems may not define this; */ -#define SEEK_SET 0 /* if not, assume 0 is correct */ -#endif - -#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ -#define READ_BINARY "r" -#define RW_BINARY "w+" -#else -#ifdef VMS /* VMS is very nonstandard */ -#define READ_BINARY "rb", "ctx=stm" -#define RW_BINARY "w+b", "ctx=stm" -#else /* standard ANSI-compliant case */ -#define READ_BINARY "rb" -#define RW_BINARY "w+b" -#endif -#endif - - -/* - * Selection of a file name for a temporary file. - * This is system-dependent! - * - * The code as given is suitable for most Unix systems, and it is easily - * modified for most non-Unix systems. Some notes: - * 1. The temp file is created in the directory named by TEMP_DIRECTORY. - * The default value is /usr/tmp, which is the conventional place for - * creating large temp files on Unix. On other systems you'll probably - * want to change the file location. You can do this by editing the - * #define, or (preferred) by defining TEMP_DIRECTORY in jconfig.h. - * - * 2. If you need to change the file name as well as its location, - * you can override the TEMP_FILE_NAME macro. (Note that this is - * actually a printf format string; it must contain %s and %d.) - * Few people should need to do this. - * - * 3. mktemp() is used to ensure that multiple processes running - * simultaneously won't select the same file names. If your system - * doesn't have mktemp(), define NO_MKTEMP to do it the hard way. - * (If you don't have , also define NO_ERRNO_H.) - * - * 4. You probably want to define NEED_SIGNAL_CATCHER so that cjpeg.c/djpeg.c - * will cause the temp files to be removed if you stop the program early. - */ - -#ifndef TEMP_DIRECTORY /* can override from jconfig.h or Makefile */ -#define TEMP_DIRECTORY "/usr/tmp/" /* recommended setting for Unix */ -#endif - -static int next_file_num; /* to distinguish among several temp files */ - -#ifdef NO_MKTEMP - -#ifndef TEMP_FILE_NAME /* can override from jconfig.h or Makefile */ -#define TEMP_FILE_NAME "%sJPG%03d.TMP" -#endif - -#ifndef NO_ERRNO_H -#include /* to define ENOENT */ -#endif - -/* ANSI C specifies that errno is a macro, but on older systems it's more - * likely to be a plain int variable. And not all versions of errno.h - * bother to declare it, so we have to in order to be most portable. Thus: - */ -#ifndef errno -extern int errno; -#endif - - -LOCAL(void) -select_file_name (char * fname) -{ - FILE * tfile; - - /* Keep generating file names till we find one that's not in use */ - for (;;) { - next_file_num++; /* advance counter */ - sprintf(fname, TEMP_FILE_NAME, TEMP_DIRECTORY, next_file_num); - if ((tfile = fopen(fname, READ_BINARY)) == NULL) { - /* fopen could have failed for a reason other than the file not - * being there; for example, file there but unreadable. - * If isn't available, then we cannot test the cause. - */ -#ifdef ENOENT - if (errno != ENOENT) - continue; -#endif - break; - } - fclose(tfile); /* oops, it's there; close tfile & try again */ - } -} - -#else /* ! NO_MKTEMP */ - -/* Note that mktemp() requires the initial filename to end in six X's */ -#ifndef TEMP_FILE_NAME /* can override from jconfig.h or Makefile */ -#define TEMP_FILE_NAME "%sJPG%dXXXXXX" -#endif - -LOCAL(void) -select_file_name (char * fname) -{ - next_file_num++; /* advance counter */ - sprintf(fname, TEMP_FILE_NAME, TEMP_DIRECTORY, next_file_num); - mktemp(fname); /* make sure file name is unique */ - /* mktemp replaces the trailing XXXXXX with a unique string of characters */ -} - -#endif /* NO_MKTEMP */ - - -/* - * Memory allocation and freeing are controlled by the regular library - * routines malloc() and free(). - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * "Large" objects are treated the same as "small" ones. - * NB: although we include FAR keywords in the routine declarations, - * this file won't actually work in 80x86 small/medium model; at least, - * you probably won't be able to process useful-size images in only 64KB. - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * This routine computes the total memory space available for allocation. - * It's impossible to do this in a portable way; our current solution is - * to make the user tell us (with a default value set at compile time). - * If you can actually get the available space, it's a good idea to subtract - * a slop factor of 5% or so. - */ - -#ifndef DEFAULT_MAX_MEM /* so can override from makefile */ -#define DEFAULT_MAX_MEM 1000000L /* default: one megabyte */ -#endif - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - return cinfo->mem->max_memory_to_use - already_allocated; -} - - -/* - * Backing store (temporary file) management. - * Backing store objects are only used when the value returned by - * jpeg_mem_available is less than the total space needed. You can dispense - * with these routines if you have plenty of virtual memory; see jmemnobs.c. - */ - - -METHODDEF(void) -read_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (fseek(info->temp_file, file_offset, SEEK_SET)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - if (JFREAD(info->temp_file, buffer_address, byte_count) - != (size_t) byte_count) - ERREXIT(cinfo, JERR_TFILE_READ); -} - - -METHODDEF(void) -write_backing_store (j_common_ptr cinfo, backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count) -{ - if (fseek(info->temp_file, file_offset, SEEK_SET)) - ERREXIT(cinfo, JERR_TFILE_SEEK); - if (JFWRITE(info->temp_file, buffer_address, byte_count) - != (size_t) byte_count) - ERREXIT(cinfo, JERR_TFILE_WRITE); -} - - -METHODDEF(void) -close_backing_store (j_common_ptr cinfo, backing_store_ptr info) -{ - fclose(info->temp_file); /* close the file */ - unlink(info->temp_name); /* delete the file */ -/* If your system doesn't have unlink(), use remove() instead. - * remove() is the ANSI-standard name for this function, but if - * your system was ANSI you'd be using jmemansi.c, right? - */ - TRACEMSS(cinfo, 1, JTRC_TFILE_CLOSE, info->temp_name); -} - - -/* - * Initial opening of a backing-store object. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - select_file_name(info->temp_name); - if ((info->temp_file = fopen(info->temp_name, RW_BINARY)) == NULL) - ERREXITS(cinfo, JERR_TFILE_CREATE, info->temp_name); - info->read_backing_store = read_backing_store; - info->write_backing_store = write_backing_store; - info->close_backing_store = close_backing_store; - TRACEMSS(cinfo, 1, JTRC_TFILE_OPEN, info->temp_name); -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - next_file_num = 0; /* initialize temp file name generator */ - return DEFAULT_MAX_MEM; /* default for max_memory_to_use */ -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* no work */ -} diff --git a/project/jni/jpeg/jmemnobs.c b/project/jni/jpeg/jmemnobs.c deleted file mode 100644 index eb8c33772..000000000 --- a/project/jni/jpeg/jmemnobs.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - * jmemnobs.c - * - * Copyright (C) 1992-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file provides a really simple implementation of the system- - * dependent portion of the JPEG memory manager. This implementation - * assumes that no backing-store files are needed: all required space - * can be obtained from malloc(). - * This is very portable in the sense that it'll compile on almost anything, - * but you'd better have lots of main memory (or virtual memory) if you want - * to process big images. - * Note that the max_memory_to_use option is ignored by this implementation. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jmemsys.h" /* import the system-dependent declarations */ - -#ifndef HAVE_STDLIB_H /* should declare malloc(),free() */ -extern void * malloc JPP((size_t size)); -extern void free JPP((void *ptr)); -#endif - - -/* - * Memory allocation and freeing are controlled by the regular library - * routines malloc() and free(). - */ - -GLOBAL(void *) -jpeg_get_small (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_small (j_common_ptr cinfo, void * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * "Large" objects are treated the same as "small" ones. - * NB: although we include FAR keywords in the routine declarations, - * this file won't actually work in 80x86 small/medium model; at least, - * you probably won't be able to process useful-size images in only 64KB. - */ - -GLOBAL(void FAR *) -jpeg_get_large (j_common_ptr cinfo, size_t sizeofobject) -{ - return (void FAR *) malloc(sizeofobject); -} - -GLOBAL(void) -jpeg_free_large (j_common_ptr cinfo, void FAR * object, size_t sizeofobject) -{ - free(object); -} - - -/* - * This routine computes the total memory space available for allocation. - * Here we always say, "we got all you want bud!" - */ - -GLOBAL(long) -jpeg_mem_available (j_common_ptr cinfo, long min_bytes_needed, - long max_bytes_needed, long already_allocated) -{ - return max_bytes_needed; -} - - -/* - * Backing store (temporary file) management. - * Since jpeg_mem_available always promised the moon, - * this should never be called and we can just error out. - */ - -GLOBAL(void) -jpeg_open_backing_store (j_common_ptr cinfo, backing_store_ptr info, - long total_bytes_needed) -{ - ERREXIT(cinfo, JERR_NO_BACKING_STORE); -} - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. Here, there isn't any. - */ - -GLOBAL(long) -jpeg_mem_init (j_common_ptr cinfo) -{ - return 0; /* just set max_memory_to_use to 0 */ -} - -GLOBAL(void) -jpeg_mem_term (j_common_ptr cinfo) -{ - /* no work */ -} diff --git a/project/jni/jpeg/jmemsys.h b/project/jni/jpeg/jmemsys.h deleted file mode 100644 index 6c3c6d348..000000000 --- a/project/jni/jpeg/jmemsys.h +++ /dev/null @@ -1,198 +0,0 @@ -/* - * jmemsys.h - * - * Copyright (C) 1992-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This include file defines the interface between the system-independent - * and system-dependent portions of the JPEG memory manager. No other - * modules need include it. (The system-independent portion is jmemmgr.c; - * there are several different versions of the system-dependent portion.) - * - * This file works as-is for the system-dependent memory managers supplied - * in the IJG distribution. You may need to modify it if you write a - * custom memory manager. If system-dependent changes are needed in - * this file, the best method is to #ifdef them based on a configuration - * symbol supplied in jconfig.h, as we have done with USE_MSDOS_MEMMGR - * and USE_MAC_MEMMGR. - */ - - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jpeg_get_small jGetSmall -#define jpeg_free_small jFreeSmall -#define jpeg_get_large jGetLarge -#define jpeg_free_large jFreeLarge -#define jpeg_mem_available jMemAvail -#define jpeg_open_backing_store jOpenBackStore -#define jpeg_mem_init jMemInit -#define jpeg_mem_term jMemTerm -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - - -/* - * These two functions are used to allocate and release small chunks of - * memory. (Typically the total amount requested through jpeg_get_small is - * no more than 20K or so; this will be requested in chunks of a few K each.) - * Behavior should be the same as for the standard library functions malloc - * and free; in particular, jpeg_get_small must return NULL on failure. - * On most systems, these ARE malloc and free. jpeg_free_small is passed the - * size of the object being freed, just in case it's needed. - * On an 80x86 machine using small-data memory model, these manage near heap. - */ - -EXTERN(void *) jpeg_get_small JPP((j_common_ptr cinfo, size_t sizeofobject)); -EXTERN(void) jpeg_free_small JPP((j_common_ptr cinfo, void * object, - size_t sizeofobject)); - -/* - * These two functions are used to allocate and release large chunks of - * memory (up to the total free space designated by jpeg_mem_available). - * The interface is the same as above, except that on an 80x86 machine, - * far pointers are used. On most other machines these are identical to - * the jpeg_get/free_small routines; but we keep them separate anyway, - * in case a different allocation strategy is desirable for large chunks. - */ - -EXTERN(void FAR *) jpeg_get_large JPP((j_common_ptr cinfo, - size_t sizeofobject)); -EXTERN(void) jpeg_free_large JPP((j_common_ptr cinfo, void FAR * object, - size_t sizeofobject)); - -/* - * The macro MAX_ALLOC_CHUNK designates the maximum number of bytes that may - * be requested in a single call to jpeg_get_large (and jpeg_get_small for that - * matter, but that case should never come into play). This macro is needed - * to model the 64Kb-segment-size limit of far addressing on 80x86 machines. - * On those machines, we expect that jconfig.h will provide a proper value. - * On machines with 32-bit flat address spaces, any large constant may be used. - * - * NB: jmemmgr.c expects that MAX_ALLOC_CHUNK will be representable as type - * size_t and will be a multiple of sizeof(align_type). - */ - -#ifndef MAX_ALLOC_CHUNK /* may be overridden in jconfig.h */ -#define MAX_ALLOC_CHUNK 1000000000L -#endif - -/* - * This routine computes the total space still available for allocation by - * jpeg_get_large. If more space than this is needed, backing store will be - * used. NOTE: any memory already allocated must not be counted. - * - * There is a minimum space requirement, corresponding to the minimum - * feasible buffer sizes; jmemmgr.c will request that much space even if - * jpeg_mem_available returns zero. The maximum space needed, enough to hold - * all working storage in memory, is also passed in case it is useful. - * Finally, the total space already allocated is passed. If no better - * method is available, cinfo->mem->max_memory_to_use - already_allocated - * is often a suitable calculation. - * - * It is OK for jpeg_mem_available to underestimate the space available - * (that'll just lead to more backing-store access than is really necessary). - * However, an overestimate will lead to failure. Hence it's wise to subtract - * a slop factor from the true available space. 5% should be enough. - * - * On machines with lots of virtual memory, any large constant may be returned. - * Conversely, zero may be returned to always use the minimum amount of memory. - */ - -EXTERN(long) jpeg_mem_available JPP((j_common_ptr cinfo, - long min_bytes_needed, - long max_bytes_needed, - long already_allocated)); - - -/* - * This structure holds whatever state is needed to access a single - * backing-store object. The read/write/close method pointers are called - * by jmemmgr.c to manipulate the backing-store object; all other fields - * are private to the system-dependent backing store routines. - */ - -#define TEMP_NAME_LENGTH 64 /* max length of a temporary file's name */ - - -#ifdef USE_MSDOS_MEMMGR /* DOS-specific junk */ - -typedef unsigned short XMSH; /* type of extended-memory handles */ -typedef unsigned short EMSH; /* type of expanded-memory handles */ - -typedef union { - short file_handle; /* DOS file handle if it's a temp file */ - XMSH xms_handle; /* handle if it's a chunk of XMS */ - EMSH ems_handle; /* handle if it's a chunk of EMS */ -} handle_union; - -#endif /* USE_MSDOS_MEMMGR */ - -#ifdef USE_MAC_MEMMGR /* Mac-specific junk */ -#include -#endif /* USE_MAC_MEMMGR */ - - -typedef struct backing_store_struct * backing_store_ptr; - -typedef struct backing_store_struct { - /* Methods for reading/writing/closing this backing-store object */ - JMETHOD(void, read_backing_store, (j_common_ptr cinfo, - backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count)); - JMETHOD(void, write_backing_store, (j_common_ptr cinfo, - backing_store_ptr info, - void FAR * buffer_address, - long file_offset, long byte_count)); - JMETHOD(void, close_backing_store, (j_common_ptr cinfo, - backing_store_ptr info)); - - /* Private fields for system-dependent backing-store management */ -#ifdef USE_MSDOS_MEMMGR - /* For the MS-DOS manager (jmemdos.c), we need: */ - handle_union handle; /* reference to backing-store storage object */ - char temp_name[TEMP_NAME_LENGTH]; /* name if it's a file */ -#else -#ifdef USE_MAC_MEMMGR - /* For the Mac manager (jmemmac.c), we need: */ - short temp_file; /* file reference number to temp file */ - FSSpec tempSpec; /* the FSSpec for the temp file */ - char temp_name[TEMP_NAME_LENGTH]; /* name if it's a file */ -#else - /* For a typical implementation with temp files, we need: */ - FILE * temp_file; /* stdio reference to temp file */ - char temp_name[TEMP_NAME_LENGTH]; /* name of temp file */ -#endif -#endif -} backing_store_info; - - -/* - * Initial opening of a backing-store object. This must fill in the - * read/write/close pointers in the object. The read/write routines - * may take an error exit if the specified maximum file size is exceeded. - * (If jpeg_mem_available always returns a large value, this routine can - * just take an error exit.) - */ - -EXTERN(void) jpeg_open_backing_store JPP((j_common_ptr cinfo, - backing_store_ptr info, - long total_bytes_needed)); - - -/* - * These routines take care of any system-dependent initialization and - * cleanup required. jpeg_mem_init will be called before anything is - * allocated (and, therefore, nothing in cinfo is of use except the error - * manager pointer). It should return a suitable default value for - * max_memory_to_use; this may subsequently be overridden by the surrounding - * application. (Note that max_memory_to_use is only important if - * jpeg_mem_available chooses to consult it ... no one else will.) - * jpeg_mem_term may assume that all requested memory has been freed and that - * all opened backing-store objects have been closed. - */ - -EXTERN(long) jpeg_mem_init JPP((j_common_ptr cinfo)); -EXTERN(void) jpeg_mem_term JPP((j_common_ptr cinfo)); diff --git a/project/jni/jpeg/jpegtran.1 b/project/jni/jpeg/jpegtran.1 deleted file mode 100644 index 6de18e2af..000000000 --- a/project/jni/jpeg/jpegtran.1 +++ /dev/null @@ -1,238 +0,0 @@ -.TH JPEGTRAN 1 "3 August 1997" -.SH NAME -jpegtran \- lossless transformation of JPEG files -.SH SYNOPSIS -.B jpegtran -[ -.I options -] -[ -.I filename -] -.LP -.SH DESCRIPTION -.LP -.B jpegtran -performs various useful transformations of JPEG files. -It can translate the coded representation from one variant of JPEG to another, -for example from baseline JPEG to progressive JPEG or vice versa. It can also -perform some rearrangements of the image data, for example turning an image -from landscape to portrait format by rotation. -.PP -.B jpegtran -works by rearranging the compressed data (DCT coefficients), without -ever fully decoding the image. Therefore, its transformations are lossless: -there is no image degradation at all, which would not be true if you used -.B djpeg -followed by -.B cjpeg -to accomplish the same conversion. But by the same token, -.B jpegtran -cannot perform lossy operations such as changing the image quality. -.PP -.B jpegtran -reads the named JPEG/JFIF file, or the standard input if no file is -named, and produces a JPEG/JFIF file on the standard output. -.SH OPTIONS -All switch names may be abbreviated; for example, -.B \-optimize -may be written -.B \-opt -or -.BR \-o . -Upper and lower case are equivalent. -British spellings are also accepted (e.g., -.BR \-optimise ), -though for brevity these are not mentioned below. -.PP -To specify the coded JPEG representation used in the output file, -.B jpegtran -accepts a subset of the switches recognized by -.BR cjpeg : -.TP -.B \-optimize -Perform optimization of entropy encoding parameters. -.TP -.B \-progressive -Create progressive JPEG file. -.TP -.BI \-restart " N" -Emit a JPEG restart marker every N MCU rows, or every N MCU blocks if "B" is -attached to the number. -.TP -.BI \-scans " file" -Use the scan script given in the specified text file. -.PP -See -.BR cjpeg (1) -for more details about these switches. -If you specify none of these switches, you get a plain baseline-JPEG output -file. The quality setting and so forth are determined by the input file. -.PP -The image can be losslessly transformed by giving one of these switches: -.TP -.B \-flip horizontal -Mirror image horizontally (left-right). -.TP -.B \-flip vertical -Mirror image vertically (top-bottom). -.TP -.B \-rotate 90 -Rotate image 90 degrees clockwise. -.TP -.B \-rotate 180 -Rotate image 180 degrees. -.TP -.B \-rotate 270 -Rotate image 270 degrees clockwise (or 90 ccw). -.TP -.B \-transpose -Transpose image (across UL-to-LR axis). -.TP -.B \-transverse -Transverse transpose (across UR-to-LL axis). -.PP -The transpose transformation has no restrictions regarding image dimensions. -The other transformations operate rather oddly if the image dimensions are not -a multiple of the iMCU size (usually 8 or 16 pixels), because they can only -transform complete blocks of DCT coefficient data in the desired way. -.PP -.BR jpegtran 's -default behavior when transforming an odd-size image is designed -to preserve exact reversibility and mathematical consistency of the -transformation set. As stated, transpose is able to flip the entire image -area. Horizontal mirroring leaves any partial iMCU column at the right edge -untouched, but is able to flip all rows of the image. Similarly, vertical -mirroring leaves any partial iMCU row at the bottom edge untouched, but is -able to flip all columns. The other transforms can be built up as sequences -of transpose and flip operations; for consistency, their actions on edge -pixels are defined to be the same as the end result of the corresponding -transpose-and-flip sequence. -.PP -For practical use, you may prefer to discard any untransformable edge pixels -rather than having a strange-looking strip along the right and/or bottom edges -of a transformed image. To do this, add the -.B \-trim -switch: -.TP -.B \-trim -Drop non-transformable edge blocks. -.PP -Obviously, a transformation with -.B \-trim -is not reversible, so strictly speaking -.B jpegtran -with this switch is not lossless. Also, the expected mathematical -equivalences between the transformations no longer hold. For example, -.B \-rot 270 -trim -trims only the bottom edge, but -.B \-rot 90 -trim -followed by -.B \-rot 180 -trim -trims both edges. -.PP -Another not-strictly-lossless transformation switch is: -.TP -.B \-grayscale -Force grayscale output. -.PP -This option discards the chrominance channels if the input image is YCbCr -(ie, a standard color JPEG), resulting in a grayscale JPEG file. The -luminance channel is preserved exactly, so this is a better method of reducing -to grayscale than decompression, conversion, and recompression. This switch -is particularly handy for fixing a monochrome picture that was mistakenly -encoded as a color JPEG. (In such a case, the space savings from getting rid -of the near-empty chroma channels won't be large; but the decoding time for -a grayscale JPEG is substantially less than that for a color JPEG.) -.PP -.B jpegtran -also recognizes these switches that control what to do with "extra" markers, -such as comment blocks: -.TP -.B \-copy none -Copy no extra markers from source file. This setting suppresses all -comments and other excess baggage present in the source file. -.TP -.B \-copy comments -Copy only comment markers. This setting copies comments from the source file, -but discards any other inessential data. -.TP -.B \-copy all -Copy all extra markers. This setting preserves miscellaneous markers -found in the source file, such as JFIF thumbnails and Photoshop settings. -In some files these extra markers can be sizable. -.PP -The default behavior is -.BR "\-copy comments" . -(Note: in IJG releases v6 and v6a, -.B jpegtran -always did the equivalent of -.BR "\-copy none" .) -.PP -Additional switches recognized by jpegtran are: -.TP -.BI \-maxmemory " N" -Set limit for amount of memory to use in processing large images. Value is -in thousands of bytes, or millions of bytes if "M" is attached to the -number. For example, -.B \-max 4m -selects 4000000 bytes. If more space is needed, temporary files will be used. -.TP -.BI \-outfile " name" -Send output image to the named file, not to standard output. -.TP -.B \-verbose -Enable debug printout. More -.BR \-v 's -give more output. Also, version information is printed at startup. -.TP -.B \-debug -Same as -.BR \-verbose . -.SH EXAMPLES -.LP -This example converts a baseline JPEG file to progressive form: -.IP -.B jpegtran \-progressive -.I foo.jpg -.B > -.I fooprog.jpg -.PP -This example rotates an image 90 degrees clockwise, discarding any -unrotatable edge pixels: -.IP -.B jpegtran \-rot 90 -trim -.I foo.jpg -.B > -.I foo90.jpg -.SH ENVIRONMENT -.TP -.B JPEGMEM -If this environment variable is set, its value is the default memory limit. -The value is specified as described for the -.B \-maxmemory -switch. -.B JPEGMEM -overrides the default value specified when the program was compiled, and -itself is overridden by an explicit -.BR \-maxmemory . -.SH SEE ALSO -.BR cjpeg (1), -.BR djpeg (1), -.BR rdjpgcom (1), -.BR wrjpgcom (1) -.br -Wallace, Gregory K. "The JPEG Still Picture Compression Standard", -Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44. -.SH AUTHOR -Independent JPEG Group -.SH BUGS -Arithmetic coding is not supported for legal reasons. -.PP -The transform options can't transform odd-size images perfectly. Use -.B \-trim -if you don't like the results without it. -.PP -The entire image is read into memory and then written out again, even in -cases where this isn't really necessary. Expect swapping on large images, -especially when using the more complex transform options. diff --git a/project/jni/jpeg/jpegtran.c b/project/jni/jpeg/jpegtran.c deleted file mode 100644 index 20ef111b3..000000000 --- a/project/jni/jpeg/jpegtran.c +++ /dev/null @@ -1,504 +0,0 @@ -/* - * jpegtran.c - * - * Copyright (C) 1995-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a command-line user interface for JPEG transcoding. - * It is very similar to cjpeg.c, but provides lossless transcoding between - * different JPEG file formats. It also provides some lossless and sort-of- - * lossless transformations of JPEG data. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ -#include "transupp.h" /* Support routines for jpegtran */ -#include "jversion.h" /* for version message */ - -#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ -#ifdef __MWERKS__ -#include /* Metrowerks needs this */ -#include /* ... and this */ -#endif -#ifdef THINK_C -#include /* Think declares it here */ -#endif -#endif - - -/* - * Argument-parsing code. - * The switch parser is designed to be useful with DOS-style command line - * syntax, ie, intermixed switches and file names, where only the switches - * to the left of a given file name affect processing of that file. - * The main program in this file doesn't actually use this capability... - */ - - -static const char * progname; /* program name for error messages */ -static char * outfilename; /* for -outfile switch */ -static JCOPY_OPTION copyoption; /* -copy switch */ -static jpeg_transform_info transformoption; /* image transformation options */ - - -LOCAL(void) -usage (void) -/* complain about bad command line */ -{ - fprintf(stderr, "usage: %s [switches] ", progname); -#ifdef TWO_FILE_COMMANDLINE - fprintf(stderr, "inputfile outputfile\n"); -#else - fprintf(stderr, "[inputfile]\n"); -#endif - - fprintf(stderr, "Switches (names may be abbreviated):\n"); - fprintf(stderr, " -copy none Copy no extra markers from source file\n"); - fprintf(stderr, " -copy comments Copy only comment markers (default)\n"); - fprintf(stderr, " -copy all Copy all extra markers\n"); -#ifdef ENTROPY_OPT_SUPPORTED - fprintf(stderr, " -optimize Optimize Huffman table (smaller file, but slow compression)\n"); -#endif -#ifdef C_PROGRESSIVE_SUPPORTED - fprintf(stderr, " -progressive Create progressive JPEG file\n"); -#endif -#if TRANSFORMS_SUPPORTED - fprintf(stderr, "Switches for modifying the image:\n"); - fprintf(stderr, " -grayscale Reduce to grayscale (omit color data)\n"); - fprintf(stderr, " -flip [horizontal|vertical] Mirror image (left-right or top-bottom)\n"); - fprintf(stderr, " -rotate [90|180|270] Rotate image (degrees clockwise)\n"); - fprintf(stderr, " -transpose Transpose image\n"); - fprintf(stderr, " -transverse Transverse transpose image\n"); - fprintf(stderr, " -trim Drop non-transformable edge blocks\n"); -#endif /* TRANSFORMS_SUPPORTED */ - fprintf(stderr, "Switches for advanced users:\n"); - fprintf(stderr, " -restart N Set restart interval in rows, or in blocks with B\n"); - fprintf(stderr, " -maxmemory N Maximum memory to use (in kbytes)\n"); - fprintf(stderr, " -outfile name Specify name for output file\n"); - fprintf(stderr, " -verbose or -debug Emit debug output\n"); - fprintf(stderr, "Switches for wizards:\n"); -#ifdef C_ARITH_CODING_SUPPORTED - fprintf(stderr, " -arithmetic Use arithmetic coding\n"); -#endif -#ifdef C_MULTISCAN_FILES_SUPPORTED - fprintf(stderr, " -scans file Create multi-scan JPEG per script file\n"); -#endif - exit(EXIT_FAILURE); -} - - -LOCAL(void) -select_transform (JXFORM_CODE transform) -/* Silly little routine to detect multiple transform options, - * which we can't handle. - */ -{ -#if TRANSFORMS_SUPPORTED - if (transformoption.transform == JXFORM_NONE || - transformoption.transform == transform) { - transformoption.transform = transform; - } else { - fprintf(stderr, "%s: can only do one image transformation at a time\n", - progname); - usage(); - } -#else - fprintf(stderr, "%s: sorry, image transformation was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif -} - - -LOCAL(int) -parse_switches (j_compress_ptr cinfo, int argc, char **argv, - int last_file_arg_seen, boolean for_real) -/* Parse optional switches. - * Returns argv[] index of first file-name argument (== argc if none). - * Any file names with indexes <= last_file_arg_seen are ignored; - * they have presumably been processed in a previous iteration. - * (Pass 0 for last_file_arg_seen on the first or only iteration.) - * for_real is FALSE on the first (dummy) pass; we may skip any expensive - * processing. - */ -{ - int argn; - char * arg; - boolean simple_progressive; - char * scansarg = NULL; /* saves -scans parm if any */ - - /* Set up default JPEG parameters. */ - simple_progressive = FALSE; - outfilename = NULL; - copyoption = JCOPYOPT_DEFAULT; - transformoption.transform = JXFORM_NONE; - transformoption.trim = FALSE; - transformoption.force_grayscale = FALSE; - cinfo->err->trace_level = 0; - - /* Scan command line options, adjust parameters */ - - for (argn = 1; argn < argc; argn++) { - arg = argv[argn]; - if (*arg != '-') { - /* Not a switch, must be a file name argument */ - if (argn <= last_file_arg_seen) { - outfilename = NULL; /* -outfile applies to just one input file */ - continue; /* ignore this name if previously processed */ - } - break; /* else done parsing switches */ - } - arg++; /* advance past switch marker character */ - - if (keymatch(arg, "arithmetic", 1)) { - /* Use arithmetic coding. */ -#ifdef C_ARITH_CODING_SUPPORTED - cinfo->arith_code = TRUE; -#else - fprintf(stderr, "%s: sorry, arithmetic coding not supported\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "copy", 1)) { - /* Select which extra markers to copy. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (keymatch(argv[argn], "none", 1)) { - copyoption = JCOPYOPT_NONE; - } else if (keymatch(argv[argn], "comments", 1)) { - copyoption = JCOPYOPT_COMMENTS; - } else if (keymatch(argv[argn], "all", 1)) { - copyoption = JCOPYOPT_ALL; - } else - usage(); - - } else if (keymatch(arg, "debug", 1) || keymatch(arg, "verbose", 1)) { - /* Enable debug printouts. */ - /* On first -d, print version identification */ - static boolean printed_version = FALSE; - - if (! printed_version) { - fprintf(stderr, "Independent JPEG Group's JPEGTRAN, version %s\n%s\n", - JVERSION, JCOPYRIGHT); - printed_version = TRUE; - } - cinfo->err->trace_level++; - - } else if (keymatch(arg, "flip", 1)) { - /* Mirror left-right or top-bottom. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (keymatch(argv[argn], "horizontal", 1)) - select_transform(JXFORM_FLIP_H); - else if (keymatch(argv[argn], "vertical", 1)) - select_transform(JXFORM_FLIP_V); - else - usage(); - - } else if (keymatch(arg, "grayscale", 1) || keymatch(arg, "greyscale",1)) { - /* Force to grayscale. */ -#if TRANSFORMS_SUPPORTED - transformoption.force_grayscale = TRUE; -#else - select_transform(JXFORM_NONE); /* force an error */ -#endif - - } else if (keymatch(arg, "maxmemory", 3)) { - /* Maximum memory in Kb (or Mb with 'm'). */ - long lval; - char ch = 'x'; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) - usage(); - if (ch == 'm' || ch == 'M') - lval *= 1000L; - cinfo->mem->max_memory_to_use = lval * 1000L; - - } else if (keymatch(arg, "optimize", 1) || keymatch(arg, "optimise", 1)) { - /* Enable entropy parm optimization. */ -#ifdef ENTROPY_OPT_SUPPORTED - cinfo->optimize_coding = TRUE; -#else - fprintf(stderr, "%s: sorry, entropy optimization was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "outfile", 4)) { - /* Set output file name. */ - if (++argn >= argc) /* advance to next argument */ - usage(); - outfilename = argv[argn]; /* save it away for later use */ - - } else if (keymatch(arg, "progressive", 1)) { - /* Select simple progressive mode. */ -#ifdef C_PROGRESSIVE_SUPPORTED - simple_progressive = TRUE; - /* We must postpone execution until num_components is known. */ -#else - fprintf(stderr, "%s: sorry, progressive output was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "restart", 1)) { - /* Restart interval in MCU rows (or in MCUs with 'b'). */ - long lval; - char ch = 'x'; - - if (++argn >= argc) /* advance to next argument */ - usage(); - if (sscanf(argv[argn], "%ld%c", &lval, &ch) < 1) - usage(); - if (lval < 0 || lval > 65535L) - usage(); - if (ch == 'b' || ch == 'B') { - cinfo->restart_interval = (unsigned int) lval; - cinfo->restart_in_rows = 0; /* else prior '-restart n' overrides me */ - } else { - cinfo->restart_in_rows = (int) lval; - /* restart_interval will be computed during startup */ - } - - } else if (keymatch(arg, "rotate", 2)) { - /* Rotate 90, 180, or 270 degrees (measured clockwise). */ - if (++argn >= argc) /* advance to next argument */ - usage(); - if (keymatch(argv[argn], "90", 2)) - select_transform(JXFORM_ROT_90); - else if (keymatch(argv[argn], "180", 3)) - select_transform(JXFORM_ROT_180); - else if (keymatch(argv[argn], "270", 3)) - select_transform(JXFORM_ROT_270); - else - usage(); - - } else if (keymatch(arg, "scans", 1)) { - /* Set scan script. */ -#ifdef C_MULTISCAN_FILES_SUPPORTED - if (++argn >= argc) /* advance to next argument */ - usage(); - scansarg = argv[argn]; - /* We must postpone reading the file in case -progressive appears. */ -#else - fprintf(stderr, "%s: sorry, multi-scan output was not compiled\n", - progname); - exit(EXIT_FAILURE); -#endif - - } else if (keymatch(arg, "transpose", 1)) { - /* Transpose (across UL-to-LR axis). */ - select_transform(JXFORM_TRANSPOSE); - - } else if (keymatch(arg, "transverse", 6)) { - /* Transverse transpose (across UR-to-LL axis). */ - select_transform(JXFORM_TRANSVERSE); - - } else if (keymatch(arg, "trim", 3)) { - /* Trim off any partial edge MCUs that the transform can't handle. */ - transformoption.trim = TRUE; - - } else { - usage(); /* bogus switch */ - } - } - - /* Post-switch-scanning cleanup */ - - if (for_real) { - -#ifdef C_PROGRESSIVE_SUPPORTED - if (simple_progressive) /* process -progressive; -scans can override */ - jpeg_simple_progression(cinfo); -#endif - -#ifdef C_MULTISCAN_FILES_SUPPORTED - if (scansarg != NULL) /* process -scans if it was present */ - if (! read_scan_script(cinfo, scansarg)) - usage(); -#endif - } - - return argn; /* return index of next arg (file name) */ -} - - -/* - * The main program. - */ - -int -main (int argc, char **argv) -{ - struct jpeg_decompress_struct srcinfo; - struct jpeg_compress_struct dstinfo; - struct jpeg_error_mgr jsrcerr, jdsterr; -#ifdef PROGRESS_REPORT - struct cdjpeg_progress_mgr progress; -#endif - jvirt_barray_ptr * src_coef_arrays; - jvirt_barray_ptr * dst_coef_arrays; - int file_index; - FILE * input_file; - FILE * output_file; - - /* On Mac, fetch a command line. */ -#ifdef USE_CCOMMAND - argc = ccommand(&argv); -#endif - - progname = argv[0]; - if (progname == NULL || progname[0] == 0) - progname = "jpegtran"; /* in case C library doesn't provide it */ - - /* Initialize the JPEG decompression object with default error handling. */ - srcinfo.err = jpeg_std_error(&jsrcerr); - jpeg_create_decompress(&srcinfo); - /* Initialize the JPEG compression object with default error handling. */ - dstinfo.err = jpeg_std_error(&jdsterr); - jpeg_create_compress(&dstinfo); - - /* Now safe to enable signal catcher. - * Note: we assume only the decompression object will have virtual arrays. - */ -#ifdef NEED_SIGNAL_CATCHER - enable_signal_catcher((j_common_ptr) &srcinfo); -#endif - - /* Scan command line to find file names. - * It is convenient to use just one switch-parsing routine, but the switch - * values read here are mostly ignored; we will rescan the switches after - * opening the input file. Also note that most of the switches affect the - * destination JPEG object, so we parse into that and then copy over what - * needs to affects the source too. - */ - - file_index = parse_switches(&dstinfo, argc, argv, 0, FALSE); - jsrcerr.trace_level = jdsterr.trace_level; - srcinfo.mem->max_memory_to_use = dstinfo.mem->max_memory_to_use; - -#ifdef TWO_FILE_COMMANDLINE - /* Must have either -outfile switch or explicit output file name */ - if (outfilename == NULL) { - if (file_index != argc-2) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - outfilename = argv[file_index+1]; - } else { - if (file_index != argc-1) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - } -#else - /* Unix style: expect zero or one file name */ - if (file_index < argc-1) { - fprintf(stderr, "%s: only one input file\n", progname); - usage(); - } -#endif /* TWO_FILE_COMMANDLINE */ - - /* Open the input file. */ - if (file_index < argc) { - if ((input_file = fopen(argv[file_index], READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[file_index]); - exit(EXIT_FAILURE); - } - } else { - /* default input file is stdin */ - input_file = read_stdin(); - } - - /* Open the output file. */ - if (outfilename != NULL) { - if ((output_file = fopen(outfilename, WRITE_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, outfilename); - exit(EXIT_FAILURE); - } - } else { - /* default output file is stdout */ - output_file = write_stdout(); - } - -#ifdef PROGRESS_REPORT - start_progress_monitor((j_common_ptr) &dstinfo, &progress); -#endif - - /* Specify data source for decompression */ - jpeg_stdio_src(&srcinfo, input_file); - - /* Enable saving of extra markers that we want to copy */ - jcopy_markers_setup(&srcinfo, copyoption); - - /* Read file header */ - (void) jpeg_read_header(&srcinfo, TRUE); - - /* Any space needed by a transform option must be requested before - * jpeg_read_coefficients so that memory allocation will be done right. - */ -#if TRANSFORMS_SUPPORTED - jtransform_request_workspace(&srcinfo, &transformoption); -#endif - - /* Read source file as DCT coefficients */ - src_coef_arrays = jpeg_read_coefficients(&srcinfo); - - /* Initialize destination compression parameters from source values */ - jpeg_copy_critical_parameters(&srcinfo, &dstinfo); - - /* Adjust destination parameters if required by transform options; - * also find out which set of coefficient arrays will hold the output. - */ -#if TRANSFORMS_SUPPORTED - dst_coef_arrays = jtransform_adjust_parameters(&srcinfo, &dstinfo, - src_coef_arrays, - &transformoption); -#else - dst_coef_arrays = src_coef_arrays; -#endif - - /* Adjust default compression parameters by re-parsing the options */ - file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE); - - /* Specify data destination for compression */ - jpeg_stdio_dest(&dstinfo, output_file); - - /* Start compressor (note no image data is actually written here) */ - jpeg_write_coefficients(&dstinfo, dst_coef_arrays); - - /* Copy to the output file any extra markers that we want to preserve */ - jcopy_markers_execute(&srcinfo, &dstinfo, copyoption); - - /* Execute image transformation, if any */ -#if TRANSFORMS_SUPPORTED - jtransform_execute_transformation(&srcinfo, &dstinfo, - src_coef_arrays, - &transformoption); -#endif - - /* Finish compression and release memory */ - jpeg_finish_compress(&dstinfo); - jpeg_destroy_compress(&dstinfo); - (void) jpeg_finish_decompress(&srcinfo); - jpeg_destroy_decompress(&srcinfo); - - /* Close files, if we opened them */ - if (input_file != stdin) - fclose(input_file); - if (output_file != stdout) - fclose(output_file); - -#ifdef PROGRESS_REPORT - end_progress_monitor((j_common_ptr) &dstinfo); -#endif - - /* All done. */ - exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS); - return 0; /* suppress no-return-value warnings */ -} diff --git a/project/jni/jpeg/jquant1.c b/project/jni/jpeg/jquant1.c deleted file mode 100644 index b2f96aa15..000000000 --- a/project/jni/jpeg/jquant1.c +++ /dev/null @@ -1,856 +0,0 @@ -/* - * jquant1.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains 1-pass color quantization (color mapping) routines. - * These routines provide mapping to a fixed color map using equally spaced - * color values. Optional Floyd-Steinberg or ordered dithering is available. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - -#ifdef QUANT_1PASS_SUPPORTED - - -/* - * The main purpose of 1-pass quantization is to provide a fast, if not very - * high quality, colormapped output capability. A 2-pass quantizer usually - * gives better visual quality; however, for quantized grayscale output this - * quantizer is perfectly adequate. Dithering is highly recommended with this - * quantizer, though you can turn it off if you really want to. - * - * In 1-pass quantization the colormap must be chosen in advance of seeing the - * image. We use a map consisting of all combinations of Ncolors[i] color - * values for the i'th component. The Ncolors[] values are chosen so that - * their product, the total number of colors, is no more than that requested. - * (In most cases, the product will be somewhat less.) - * - * Since the colormap is orthogonal, the representative value for each color - * component can be determined without considering the other components; - * then these indexes can be combined into a colormap index by a standard - * N-dimensional-array-subscript calculation. Most of the arithmetic involved - * can be precalculated and stored in the lookup table colorindex[]. - * colorindex[i][j] maps pixel value j in component i to the nearest - * representative value (grid plane) for that component; this index is - * multiplied by the array stride for component i, so that the - * index of the colormap entry closest to a given pixel value is just - * sum( colorindex[component-number][pixel-component-value] ) - * Aside from being fast, this scheme allows for variable spacing between - * representative values with no additional lookup cost. - * - * If gamma correction has been applied in color conversion, it might be wise - * to adjust the color grid spacing so that the representative colors are - * equidistant in linear space. At this writing, gamma correction is not - * implemented by jdcolor, so nothing is done here. - */ - - -/* Declarations for ordered dithering. - * - * We use a standard 16x16 ordered dither array. The basic concept of ordered - * dithering is described in many references, for instance Dale Schumacher's - * chapter II.2 of Graphics Gems II (James Arvo, ed. Academic Press, 1991). - * In place of Schumacher's comparisons against a "threshold" value, we add a - * "dither" value to the input pixel and then round the result to the nearest - * output value. The dither value is equivalent to (0.5 - threshold) times - * the distance between output values. For ordered dithering, we assume that - * the output colors are equally spaced; if not, results will probably be - * worse, since the dither may be too much or too little at a given point. - * - * The normal calculation would be to form pixel value + dither, range-limit - * this to 0..MAXJSAMPLE, and then index into the colorindex table as usual. - * We can skip the separate range-limiting step by extending the colorindex - * table in both directions. - */ - -#define ODITHER_SIZE 16 /* dimension of dither matrix */ -/* NB: if ODITHER_SIZE is not a power of 2, ODITHER_MASK uses will break */ -#define ODITHER_CELLS (ODITHER_SIZE*ODITHER_SIZE) /* # cells in matrix */ -#define ODITHER_MASK (ODITHER_SIZE-1) /* mask for wrapping around counters */ - -typedef int ODITHER_MATRIX[ODITHER_SIZE][ODITHER_SIZE]; -typedef int (*ODITHER_MATRIX_PTR)[ODITHER_SIZE]; - -static const UINT8 base_dither_matrix[ODITHER_SIZE][ODITHER_SIZE] = { - /* Bayer's order-4 dither array. Generated by the code given in - * Stephen Hawley's article "Ordered Dithering" in Graphics Gems I. - * The values in this array must range from 0 to ODITHER_CELLS-1. - */ - { 0,192, 48,240, 12,204, 60,252, 3,195, 51,243, 15,207, 63,255 }, - { 128, 64,176,112,140, 76,188,124,131, 67,179,115,143, 79,191,127 }, - { 32,224, 16,208, 44,236, 28,220, 35,227, 19,211, 47,239, 31,223 }, - { 160, 96,144, 80,172,108,156, 92,163, 99,147, 83,175,111,159, 95 }, - { 8,200, 56,248, 4,196, 52,244, 11,203, 59,251, 7,199, 55,247 }, - { 136, 72,184,120,132, 68,180,116,139, 75,187,123,135, 71,183,119 }, - { 40,232, 24,216, 36,228, 20,212, 43,235, 27,219, 39,231, 23,215 }, - { 168,104,152, 88,164,100,148, 84,171,107,155, 91,167,103,151, 87 }, - { 2,194, 50,242, 14,206, 62,254, 1,193, 49,241, 13,205, 61,253 }, - { 130, 66,178,114,142, 78,190,126,129, 65,177,113,141, 77,189,125 }, - { 34,226, 18,210, 46,238, 30,222, 33,225, 17,209, 45,237, 29,221 }, - { 162, 98,146, 82,174,110,158, 94,161, 97,145, 81,173,109,157, 93 }, - { 10,202, 58,250, 6,198, 54,246, 9,201, 57,249, 5,197, 53,245 }, - { 138, 74,186,122,134, 70,182,118,137, 73,185,121,133, 69,181,117 }, - { 42,234, 26,218, 38,230, 22,214, 41,233, 25,217, 37,229, 21,213 }, - { 170,106,154, 90,166,102,150, 86,169,105,153, 89,165,101,149, 85 } -}; - - -/* Declarations for Floyd-Steinberg dithering. - * - * Errors are accumulated into the array fserrors[], at a resolution of - * 1/16th of a pixel count. The error at a given pixel is propagated - * to its not-yet-processed neighbors using the standard F-S fractions, - * ... (here) 7/16 - * 3/16 5/16 1/16 - * We work left-to-right on even rows, right-to-left on odd rows. - * - * We can get away with a single array (holding one row's worth of errors) - * by using it to store the current row's errors at pixel columns not yet - * processed, but the next row's errors at columns already processed. We - * need only a few extra variables to hold the errors immediately around the - * current column. (If we are lucky, those variables are in registers, but - * even if not, they're probably cheaper to access than array elements are.) - * - * The fserrors[] array is indexed [component#][position]. - * We provide (#columns + 2) entries per component; the extra entry at each - * end saves us from special-casing the first and last pixels. - * - * Note: on a wide image, we might not have enough room in a PC's near data - * segment to hold the error array; so it is allocated with alloc_large. - */ - -#if BITS_IN_JSAMPLE == 8 -typedef INT16 FSERROR; /* 16 bits should be enough */ -typedef int LOCFSERROR; /* use 'int' for calculation temps */ -#else -typedef INT32 FSERROR; /* may need more than 16 bits */ -typedef INT32 LOCFSERROR; /* be sure calculation temps are big enough */ -#endif - -typedef FSERROR FAR *FSERRPTR; /* pointer to error array (in FAR storage!) */ - - -/* Private subobject */ - -#define MAX_Q_COMPS 4 /* max components I can handle */ - -typedef struct { - struct jpeg_color_quantizer pub; /* public fields */ - - /* Initially allocated colormap is saved here */ - JSAMPARRAY sv_colormap; /* The color map as a 2-D pixel array */ - int sv_actual; /* number of entries in use */ - - JSAMPARRAY colorindex; /* Precomputed mapping for speed */ - /* colorindex[i][j] = index of color closest to pixel value j in component i, - * premultiplied as described above. Since colormap indexes must fit into - * JSAMPLEs, the entries of this array will too. - */ - boolean is_padded; /* is the colorindex padded for odither? */ - - int Ncolors[MAX_Q_COMPS]; /* # of values alloced to each component */ - - /* Variables for ordered dithering */ - int row_index; /* cur row's vertical index in dither matrix */ - ODITHER_MATRIX_PTR odither[MAX_Q_COMPS]; /* one dither array per component */ - - /* Variables for Floyd-Steinberg dithering */ - FSERRPTR fserrors[MAX_Q_COMPS]; /* accumulated errors */ - boolean on_odd_row; /* flag to remember which row we are on */ -} my_cquantizer; - -typedef my_cquantizer * my_cquantize_ptr; - - -/* - * Policy-making subroutines for create_colormap and create_colorindex. - * These routines determine the colormap to be used. The rest of the module - * only assumes that the colormap is orthogonal. - * - * * select_ncolors decides how to divvy up the available colors - * among the components. - * * output_value defines the set of representative values for a component. - * * largest_input_value defines the mapping from input values to - * representative values for a component. - * Note that the latter two routines may impose different policies for - * different components, though this is not currently done. - */ - - -LOCAL(int) -select_ncolors (j_decompress_ptr cinfo, int Ncolors[]) -/* Determine allocation of desired colors to components, */ -/* and fill in Ncolors[] array to indicate choice. */ -/* Return value is total number of colors (product of Ncolors[] values). */ -{ - int nc = cinfo->out_color_components; /* number of color components */ - int max_colors = cinfo->desired_number_of_colors; - int total_colors, iroot, i, j; - boolean changed; - long temp; - static const int RGB_order[3] = { RGB_GREEN, RGB_RED, RGB_BLUE }; - - /* We can allocate at least the nc'th root of max_colors per component. */ - /* Compute floor(nc'th root of max_colors). */ - iroot = 1; - do { - iroot++; - temp = iroot; /* set temp = iroot ** nc */ - for (i = 1; i < nc; i++) - temp *= iroot; - } while (temp <= (long) max_colors); /* repeat till iroot exceeds root */ - iroot--; /* now iroot = floor(root) */ - - /* Must have at least 2 color values per component */ - if (iroot < 2) - ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, (int) temp); - - /* Initialize to iroot color values for each component */ - total_colors = 1; - for (i = 0; i < nc; i++) { - Ncolors[i] = iroot; - total_colors *= iroot; - } - /* We may be able to increment the count for one or more components without - * exceeding max_colors, though we know not all can be incremented. - * Sometimes, the first component can be incremented more than once! - * (Example: for 16 colors, we start at 2*2*2, go to 3*2*2, then 4*2*2.) - * In RGB colorspace, try to increment G first, then R, then B. - */ - do { - changed = FALSE; - for (i = 0; i < nc; i++) { - j = (cinfo->out_color_space == JCS_RGB ? RGB_order[i] : i); - /* calculate new total_colors if Ncolors[j] is incremented */ - temp = total_colors / Ncolors[j]; - temp *= Ncolors[j]+1; /* done in long arith to avoid oflo */ - if (temp > (long) max_colors) - break; /* won't fit, done with this pass */ - Ncolors[j]++; /* OK, apply the increment */ - total_colors = (int) temp; - changed = TRUE; - } - } while (changed); - - return total_colors; -} - - -LOCAL(int) -output_value (j_decompress_ptr cinfo, int ci, int j, int maxj) -/* Return j'th output value, where j will range from 0 to maxj */ -/* The output values must fall in 0..MAXJSAMPLE in increasing order */ -{ - /* We always provide values 0 and MAXJSAMPLE for each component; - * any additional values are equally spaced between these limits. - * (Forcing the upper and lower values to the limits ensures that - * dithering can't produce a color outside the selected gamut.) - */ - return (int) (((INT32) j * MAXJSAMPLE + maxj/2) / maxj); -} - - -LOCAL(int) -largest_input_value (j_decompress_ptr cinfo, int ci, int j, int maxj) -/* Return largest input value that should map to j'th output value */ -/* Must have largest(j=0) >= 0, and largest(j=maxj) >= MAXJSAMPLE */ -{ - /* Breakpoints are halfway between values returned by output_value */ - return (int) (((INT32) (2*j + 1) * MAXJSAMPLE + maxj) / (2*maxj)); -} - - -/* - * Create the colormap. - */ - -LOCAL(void) -create_colormap (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - JSAMPARRAY colormap; /* Created colormap */ - int total_colors; /* Number of distinct output colors */ - int i,j,k, nci, blksize, blkdist, ptr, val; - - /* Select number of colors for each component */ - total_colors = select_ncolors(cinfo, cquantize->Ncolors); - - /* Report selected color counts */ - if (cinfo->out_color_components == 3) - TRACEMS4(cinfo, 1, JTRC_QUANT_3_NCOLORS, - total_colors, cquantize->Ncolors[0], - cquantize->Ncolors[1], cquantize->Ncolors[2]); - else - TRACEMS1(cinfo, 1, JTRC_QUANT_NCOLORS, total_colors); - - /* Allocate and fill in the colormap. */ - /* The colors are ordered in the map in standard row-major order, */ - /* i.e. rightmost (highest-indexed) color changes most rapidly. */ - - colormap = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) total_colors, (JDIMENSION) cinfo->out_color_components); - - /* blksize is number of adjacent repeated entries for a component */ - /* blkdist is distance between groups of identical entries for a component */ - blkdist = total_colors; - - for (i = 0; i < cinfo->out_color_components; i++) { - /* fill in colormap entries for i'th color component */ - nci = cquantize->Ncolors[i]; /* # of distinct values for this color */ - blksize = blkdist / nci; - for (j = 0; j < nci; j++) { - /* Compute j'th output value (out of nci) for component */ - val = output_value(cinfo, i, j, nci-1); - /* Fill in all colormap entries that have this value of this component */ - for (ptr = j * blksize; ptr < total_colors; ptr += blkdist) { - /* fill in blksize entries beginning at ptr */ - for (k = 0; k < blksize; k++) - colormap[i][ptr+k] = (JSAMPLE) val; - } - } - blkdist = blksize; /* blksize of this color is blkdist of next */ - } - - /* Save the colormap in private storage, - * where it will survive color quantization mode changes. - */ - cquantize->sv_colormap = colormap; - cquantize->sv_actual = total_colors; -} - - -/* - * Create the color index table. - */ - -LOCAL(void) -create_colorindex (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - JSAMPROW indexptr; - int i,j,k, nci, blksize, val, pad; - - /* For ordered dither, we pad the color index tables by MAXJSAMPLE in - * each direction (input index values can be -MAXJSAMPLE .. 2*MAXJSAMPLE). - * This is not necessary in the other dithering modes. However, we - * flag whether it was done in case user changes dithering mode. - */ - if (cinfo->dither_mode == JDITHER_ORDERED) { - pad = MAXJSAMPLE*2; - cquantize->is_padded = TRUE; - } else { - pad = 0; - cquantize->is_padded = FALSE; - } - - cquantize->colorindex = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) (MAXJSAMPLE+1 + pad), - (JDIMENSION) cinfo->out_color_components); - - /* blksize is number of adjacent repeated entries for a component */ - blksize = cquantize->sv_actual; - - for (i = 0; i < cinfo->out_color_components; i++) { - /* fill in colorindex entries for i'th color component */ - nci = cquantize->Ncolors[i]; /* # of distinct values for this color */ - blksize = blksize / nci; - - /* adjust colorindex pointers to provide padding at negative indexes. */ - if (pad) - cquantize->colorindex[i] += MAXJSAMPLE; - - /* in loop, val = index of current output value, */ - /* and k = largest j that maps to current val */ - indexptr = cquantize->colorindex[i]; - val = 0; - k = largest_input_value(cinfo, i, 0, nci-1); - for (j = 0; j <= MAXJSAMPLE; j++) { - while (j > k) /* advance val if past boundary */ - k = largest_input_value(cinfo, i, ++val, nci-1); - /* premultiply so that no multiplication needed in main processing */ - indexptr[j] = (JSAMPLE) (val * blksize); - } - /* Pad at both ends if necessary */ - if (pad) - for (j = 1; j <= MAXJSAMPLE; j++) { - indexptr[-j] = indexptr[0]; - indexptr[MAXJSAMPLE+j] = indexptr[MAXJSAMPLE]; - } - } -} - - -/* - * Create an ordered-dither array for a component having ncolors - * distinct output values. - */ - -LOCAL(ODITHER_MATRIX_PTR) -make_odither_array (j_decompress_ptr cinfo, int ncolors) -{ - ODITHER_MATRIX_PTR odither; - int j,k; - INT32 num,den; - - odither = (ODITHER_MATRIX_PTR) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(ODITHER_MATRIX)); - /* The inter-value distance for this color is MAXJSAMPLE/(ncolors-1). - * Hence the dither value for the matrix cell with fill order f - * (f=0..N-1) should be (N-1-2*f)/(2*N) * MAXJSAMPLE/(ncolors-1). - * On 16-bit-int machine, be careful to avoid overflow. - */ - den = 2 * ODITHER_CELLS * ((INT32) (ncolors - 1)); - for (j = 0; j < ODITHER_SIZE; j++) { - for (k = 0; k < ODITHER_SIZE; k++) { - num = ((INT32) (ODITHER_CELLS-1 - 2*((int)base_dither_matrix[j][k]))) - * MAXJSAMPLE; - /* Ensure round towards zero despite C's lack of consistency - * about rounding negative values in integer division... - */ - odither[j][k] = (int) (num<0 ? -((-num)/den) : num/den); - } - } - return odither; -} - - -/* - * Create the ordered-dither tables. - * Components having the same number of representative colors may - * share a dither table. - */ - -LOCAL(void) -create_odither_tables (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - ODITHER_MATRIX_PTR odither; - int i, j, nci; - - for (i = 0; i < cinfo->out_color_components; i++) { - nci = cquantize->Ncolors[i]; /* # of distinct values for this color */ - odither = NULL; /* search for matching prior component */ - for (j = 0; j < i; j++) { - if (nci == cquantize->Ncolors[j]) { - odither = cquantize->odither[j]; - break; - } - } - if (odither == NULL) /* need a new table? */ - odither = make_odither_array(cinfo, nci); - cquantize->odither[i] = odither; - } -} - - -/* - * Map some rows of pixels to the output colormapped representation. - */ - -METHODDEF(void) -color_quantize (j_decompress_ptr cinfo, JSAMPARRAY input_buf, - JSAMPARRAY output_buf, int num_rows) -/* General case, no dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - JSAMPARRAY colorindex = cquantize->colorindex; - register int pixcode, ci; - register JSAMPROW ptrin, ptrout; - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - register int nc = cinfo->out_color_components; - - for (row = 0; row < num_rows; row++) { - ptrin = input_buf[row]; - ptrout = output_buf[row]; - for (col = width; col > 0; col--) { - pixcode = 0; - for (ci = 0; ci < nc; ci++) { - pixcode += GETJSAMPLE(colorindex[ci][GETJSAMPLE(*ptrin++)]); - } - *ptrout++ = (JSAMPLE) pixcode; - } - } -} - - -METHODDEF(void) -color_quantize3 (j_decompress_ptr cinfo, JSAMPARRAY input_buf, - JSAMPARRAY output_buf, int num_rows) -/* Fast path for out_color_components==3, no dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - register int pixcode; - register JSAMPROW ptrin, ptrout; - JSAMPROW colorindex0 = cquantize->colorindex[0]; - JSAMPROW colorindex1 = cquantize->colorindex[1]; - JSAMPROW colorindex2 = cquantize->colorindex[2]; - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - - for (row = 0; row < num_rows; row++) { - ptrin = input_buf[row]; - ptrout = output_buf[row]; - for (col = width; col > 0; col--) { - pixcode = GETJSAMPLE(colorindex0[GETJSAMPLE(*ptrin++)]); - pixcode += GETJSAMPLE(colorindex1[GETJSAMPLE(*ptrin++)]); - pixcode += GETJSAMPLE(colorindex2[GETJSAMPLE(*ptrin++)]); - *ptrout++ = (JSAMPLE) pixcode; - } - } -} - - -METHODDEF(void) -quantize_ord_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf, - JSAMPARRAY output_buf, int num_rows) -/* General case, with ordered dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - register JSAMPROW input_ptr; - register JSAMPROW output_ptr; - JSAMPROW colorindex_ci; - int * dither; /* points to active row of dither matrix */ - int row_index, col_index; /* current indexes into dither matrix */ - int nc = cinfo->out_color_components; - int ci; - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - - for (row = 0; row < num_rows; row++) { - /* Initialize output values to 0 so can process components separately */ - jzero_far((void FAR *) output_buf[row], - (size_t) (width * SIZEOF(JSAMPLE))); - row_index = cquantize->row_index; - for (ci = 0; ci < nc; ci++) { - input_ptr = input_buf[row] + ci; - output_ptr = output_buf[row]; - colorindex_ci = cquantize->colorindex[ci]; - dither = cquantize->odither[ci][row_index]; - col_index = 0; - - for (col = width; col > 0; col--) { - /* Form pixel value + dither, range-limit to 0..MAXJSAMPLE, - * select output value, accumulate into output code for this pixel. - * Range-limiting need not be done explicitly, as we have extended - * the colorindex table to produce the right answers for out-of-range - * inputs. The maximum dither is +- MAXJSAMPLE; this sets the - * required amount of padding. - */ - *output_ptr += colorindex_ci[GETJSAMPLE(*input_ptr)+dither[col_index]]; - input_ptr += nc; - output_ptr++; - col_index = (col_index + 1) & ODITHER_MASK; - } - } - /* Advance row index for next row */ - row_index = (row_index + 1) & ODITHER_MASK; - cquantize->row_index = row_index; - } -} - - -METHODDEF(void) -quantize3_ord_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf, - JSAMPARRAY output_buf, int num_rows) -/* Fast path for out_color_components==3, with ordered dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - register int pixcode; - register JSAMPROW input_ptr; - register JSAMPROW output_ptr; - JSAMPROW colorindex0 = cquantize->colorindex[0]; - JSAMPROW colorindex1 = cquantize->colorindex[1]; - JSAMPROW colorindex2 = cquantize->colorindex[2]; - int * dither0; /* points to active row of dither matrix */ - int * dither1; - int * dither2; - int row_index, col_index; /* current indexes into dither matrix */ - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - - for (row = 0; row < num_rows; row++) { - row_index = cquantize->row_index; - input_ptr = input_buf[row]; - output_ptr = output_buf[row]; - dither0 = cquantize->odither[0][row_index]; - dither1 = cquantize->odither[1][row_index]; - dither2 = cquantize->odither[2][row_index]; - col_index = 0; - - for (col = width; col > 0; col--) { - pixcode = GETJSAMPLE(colorindex0[GETJSAMPLE(*input_ptr++) + - dither0[col_index]]); - pixcode += GETJSAMPLE(colorindex1[GETJSAMPLE(*input_ptr++) + - dither1[col_index]]); - pixcode += GETJSAMPLE(colorindex2[GETJSAMPLE(*input_ptr++) + - dither2[col_index]]); - *output_ptr++ = (JSAMPLE) pixcode; - col_index = (col_index + 1) & ODITHER_MASK; - } - row_index = (row_index + 1) & ODITHER_MASK; - cquantize->row_index = row_index; - } -} - - -METHODDEF(void) -quantize_fs_dither (j_decompress_ptr cinfo, JSAMPARRAY input_buf, - JSAMPARRAY output_buf, int num_rows) -/* General case, with Floyd-Steinberg dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - register LOCFSERROR cur; /* current error or pixel value */ - LOCFSERROR belowerr; /* error for pixel below cur */ - LOCFSERROR bpreverr; /* error for below/prev col */ - LOCFSERROR bnexterr; /* error for below/next col */ - LOCFSERROR delta; - register FSERRPTR errorptr; /* => fserrors[] at column before current */ - register JSAMPROW input_ptr; - register JSAMPROW output_ptr; - JSAMPROW colorindex_ci; - JSAMPROW colormap_ci; - int pixcode; - int nc = cinfo->out_color_components; - int dir; /* 1 for left-to-right, -1 for right-to-left */ - int dirnc; /* dir * nc */ - int ci; - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - JSAMPLE *range_limit = cinfo->sample_range_limit; - SHIFT_TEMPS - - for (row = 0; row < num_rows; row++) { - /* Initialize output values to 0 so can process components separately */ - jzero_far((void FAR *) output_buf[row], - (size_t) (width * SIZEOF(JSAMPLE))); - for (ci = 0; ci < nc; ci++) { - input_ptr = input_buf[row] + ci; - output_ptr = output_buf[row]; - if (cquantize->on_odd_row) { - /* work right to left in this row */ - input_ptr += (width-1) * nc; /* so point to rightmost pixel */ - output_ptr += width-1; - dir = -1; - dirnc = -nc; - errorptr = cquantize->fserrors[ci] + (width+1); /* => entry after last column */ - } else { - /* work left to right in this row */ - dir = 1; - dirnc = nc; - errorptr = cquantize->fserrors[ci]; /* => entry before first column */ - } - colorindex_ci = cquantize->colorindex[ci]; - colormap_ci = cquantize->sv_colormap[ci]; - /* Preset error values: no error propagated to first pixel from left */ - cur = 0; - /* and no error propagated to row below yet */ - belowerr = bpreverr = 0; - - for (col = width; col > 0; col--) { - /* cur holds the error propagated from the previous pixel on the - * current line. Add the error propagated from the previous line - * to form the complete error correction term for this pixel, and - * round the error term (which is expressed * 16) to an integer. - * RIGHT_SHIFT rounds towards minus infinity, so adding 8 is correct - * for either sign of the error value. - * Note: errorptr points to *previous* column's array entry. - */ - cur = RIGHT_SHIFT(cur + errorptr[dir] + 8, 4); - /* Form pixel value + error, and range-limit to 0..MAXJSAMPLE. - * The maximum error is +- MAXJSAMPLE; this sets the required size - * of the range_limit array. - */ - cur += GETJSAMPLE(*input_ptr); - cur = GETJSAMPLE(range_limit[cur]); - /* Select output value, accumulate into output code for this pixel */ - pixcode = GETJSAMPLE(colorindex_ci[cur]); - *output_ptr += (JSAMPLE) pixcode; - /* Compute actual representation error at this pixel */ - /* Note: we can do this even though we don't have the final */ - /* pixel code, because the colormap is orthogonal. */ - cur -= GETJSAMPLE(colormap_ci[pixcode]); - /* Compute error fractions to be propagated to adjacent pixels. - * Add these into the running sums, and simultaneously shift the - * next-line error sums left by 1 column. - */ - bnexterr = cur; - delta = cur * 2; - cur += delta; /* form error * 3 */ - errorptr[0] = (FSERROR) (bpreverr + cur); - cur += delta; /* form error * 5 */ - bpreverr = belowerr + cur; - belowerr = bnexterr; - cur += delta; /* form error * 7 */ - /* At this point cur contains the 7/16 error value to be propagated - * to the next pixel on the current line, and all the errors for the - * next line have been shifted over. We are therefore ready to move on. - */ - input_ptr += dirnc; /* advance input ptr to next column */ - output_ptr += dir; /* advance output ptr to next column */ - errorptr += dir; /* advance errorptr to current column */ - } - /* Post-loop cleanup: we must unload the final error value into the - * final fserrors[] entry. Note we need not unload belowerr because - * it is for the dummy column before or after the actual array. - */ - errorptr[0] = (FSERROR) bpreverr; /* unload prev err into array */ - } - cquantize->on_odd_row = (cquantize->on_odd_row ? FALSE : TRUE); - } -} - - -/* - * Allocate workspace for Floyd-Steinberg errors. - */ - -LOCAL(void) -alloc_fs_workspace (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - size_t arraysize; - int i; - - arraysize = (size_t) ((cinfo->output_width + 2) * SIZEOF(FSERROR)); - for (i = 0; i < cinfo->out_color_components; i++) { - cquantize->fserrors[i] = (FSERRPTR) - (*cinfo->mem->alloc_large)((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize); - } -} - - -/* - * Initialize for one-pass color quantization. - */ - -METHODDEF(void) -start_pass_1_quant (j_decompress_ptr cinfo, boolean is_pre_scan) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - size_t arraysize; - int i; - - /* Install my colormap. */ - cinfo->colormap = cquantize->sv_colormap; - cinfo->actual_number_of_colors = cquantize->sv_actual; - - /* Initialize for desired dithering mode. */ - switch (cinfo->dither_mode) { - case JDITHER_NONE: - if (cinfo->out_color_components == 3) - cquantize->pub.color_quantize = color_quantize3; - else - cquantize->pub.color_quantize = color_quantize; - break; - case JDITHER_ORDERED: - if (cinfo->out_color_components == 3) - cquantize->pub.color_quantize = quantize3_ord_dither; - else - cquantize->pub.color_quantize = quantize_ord_dither; - cquantize->row_index = 0; /* initialize state for ordered dither */ - /* If user changed to ordered dither from another mode, - * we must recreate the color index table with padding. - * This will cost extra space, but probably isn't very likely. - */ - if (! cquantize->is_padded) - create_colorindex(cinfo); - /* Create ordered-dither tables if we didn't already. */ - if (cquantize->odither[0] == NULL) - create_odither_tables(cinfo); - break; - case JDITHER_FS: - cquantize->pub.color_quantize = quantize_fs_dither; - cquantize->on_odd_row = FALSE; /* initialize state for F-S dither */ - /* Allocate Floyd-Steinberg workspace if didn't already. */ - if (cquantize->fserrors[0] == NULL) - alloc_fs_workspace(cinfo); - /* Initialize the propagated errors to zero. */ - arraysize = (size_t) ((cinfo->output_width + 2) * SIZEOF(FSERROR)); - for (i = 0; i < cinfo->out_color_components; i++) - jzero_far((void FAR *) cquantize->fserrors[i], arraysize); - break; - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } -} - - -/* - * Finish up at the end of the pass. - */ - -METHODDEF(void) -finish_pass_1_quant (j_decompress_ptr cinfo) -{ - /* no work in 1-pass case */ -} - - -/* - * Switch to a new external colormap between output passes. - * Shouldn't get to this module! - */ - -METHODDEF(void) -new_color_map_1_quant (j_decompress_ptr cinfo) -{ - ERREXIT(cinfo, JERR_MODE_CHANGE); -} - - -/* - * Module initialization routine for 1-pass color quantization. - */ - -GLOBAL(void) -jinit_1pass_quantizer (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize; - - cquantize = (my_cquantize_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_cquantizer)); - cinfo->cquantize = (struct jpeg_color_quantizer *) cquantize; - cquantize->pub.start_pass = start_pass_1_quant; - cquantize->pub.finish_pass = finish_pass_1_quant; - cquantize->pub.new_color_map = new_color_map_1_quant; - cquantize->fserrors[0] = NULL; /* Flag FS workspace not allocated */ - cquantize->odither[0] = NULL; /* Also flag odither arrays not allocated */ - - /* Make sure my internal arrays won't overflow */ - if (cinfo->out_color_components > MAX_Q_COMPS) - ERREXIT1(cinfo, JERR_QUANT_COMPONENTS, MAX_Q_COMPS); - /* Make sure colormap indexes can be represented by JSAMPLEs */ - if (cinfo->desired_number_of_colors > (MAXJSAMPLE+1)) - ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXJSAMPLE+1); - - /* Create the colormap and color index table. */ - create_colormap(cinfo); - create_colorindex(cinfo); - - /* Allocate Floyd-Steinberg workspace now if requested. - * We do this now since it is FAR storage and may affect the memory - * manager's space calculations. If the user changes to FS dither - * mode in a later pass, we will allocate the space then, and will - * possibly overrun the max_memory_to_use setting. - */ - if (cinfo->dither_mode == JDITHER_FS) - alloc_fs_workspace(cinfo); -} - -#endif /* QUANT_1PASS_SUPPORTED */ diff --git a/project/jni/jpeg/jquant2.c b/project/jni/jpeg/jquant2.c deleted file mode 100644 index af601e334..000000000 --- a/project/jni/jpeg/jquant2.c +++ /dev/null @@ -1,1310 +0,0 @@ -/* - * jquant2.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains 2-pass color quantization (color mapping) routines. - * These routines provide selection of a custom color map for an image, - * followed by mapping of the image to that color map, with optional - * Floyd-Steinberg dithering. - * It is also possible to use just the second pass to map to an arbitrary - * externally-given color map. - * - * Note: ordered dithering is not supported, since there isn't any fast - * way to compute intercolor distances; it's unclear that ordered dither's - * fundamental assumptions even hold with an irregularly spaced color map. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - -#ifdef QUANT_2PASS_SUPPORTED - - -/* - * This module implements the well-known Heckbert paradigm for color - * quantization. Most of the ideas used here can be traced back to - * Heckbert's seminal paper - * Heckbert, Paul. "Color Image Quantization for Frame Buffer Display", - * Proc. SIGGRAPH '82, Computer Graphics v.16 #3 (July 1982), pp 297-304. - * - * In the first pass over the image, we accumulate a histogram showing the - * usage count of each possible color. To keep the histogram to a reasonable - * size, we reduce the precision of the input; typical practice is to retain - * 5 or 6 bits per color, so that 8 or 4 different input values are counted - * in the same histogram cell. - * - * Next, the color-selection step begins with a box representing the whole - * color space, and repeatedly splits the "largest" remaining box until we - * have as many boxes as desired colors. Then the mean color in each - * remaining box becomes one of the possible output colors. - * - * The second pass over the image maps each input pixel to the closest output - * color (optionally after applying a Floyd-Steinberg dithering correction). - * This mapping is logically trivial, but making it go fast enough requires - * considerable care. - * - * Heckbert-style quantizers vary a good deal in their policies for choosing - * the "largest" box and deciding where to cut it. The particular policies - * used here have proved out well in experimental comparisons, but better ones - * may yet be found. - * - * In earlier versions of the IJG code, this module quantized in YCbCr color - * space, processing the raw upsampled data without a color conversion step. - * This allowed the color conversion math to be done only once per colormap - * entry, not once per pixel. However, that optimization precluded other - * useful optimizations (such as merging color conversion with upsampling) - * and it also interfered with desired capabilities such as quantizing to an - * externally-supplied colormap. We have therefore abandoned that approach. - * The present code works in the post-conversion color space, typically RGB. - * - * To improve the visual quality of the results, we actually work in scaled - * RGB space, giving G distances more weight than R, and R in turn more than - * B. To do everything in integer math, we must use integer scale factors. - * The 2/3/1 scale factors used here correspond loosely to the relative - * weights of the colors in the NTSC grayscale equation. - * If you want to use this code to quantize a non-RGB color space, you'll - * probably need to change these scale factors. - */ - -#define R_SCALE 2 /* scale R distances by this much */ -#define G_SCALE 3 /* scale G distances by this much */ -#define B_SCALE 1 /* and B by this much */ - -/* Relabel R/G/B as components 0/1/2, respecting the RGB ordering defined - * in jmorecfg.h. As the code stands, it will do the right thing for R,G,B - * and B,G,R orders. If you define some other weird order in jmorecfg.h, - * you'll get compile errors until you extend this logic. In that case - * you'll probably want to tweak the histogram sizes too. - */ - -#if RGB_RED == 0 -#define C0_SCALE R_SCALE -#endif -#if RGB_BLUE == 0 -#define C0_SCALE B_SCALE -#endif -#if RGB_GREEN == 1 -#define C1_SCALE G_SCALE -#endif -#if RGB_RED == 2 -#define C2_SCALE R_SCALE -#endif -#if RGB_BLUE == 2 -#define C2_SCALE B_SCALE -#endif - - -/* - * First we have the histogram data structure and routines for creating it. - * - * The number of bits of precision can be adjusted by changing these symbols. - * We recommend keeping 6 bits for G and 5 each for R and B. - * If you have plenty of memory and cycles, 6 bits all around gives marginally - * better results; if you are short of memory, 5 bits all around will save - * some space but degrade the results. - * To maintain a fully accurate histogram, we'd need to allocate a "long" - * (preferably unsigned long) for each cell. In practice this is overkill; - * we can get by with 16 bits per cell. Few of the cell counts will overflow, - * and clamping those that do overflow to the maximum value will give close- - * enough results. This reduces the recommended histogram size from 256Kb - * to 128Kb, which is a useful savings on PC-class machines. - * (In the second pass the histogram space is re-used for pixel mapping data; - * in that capacity, each cell must be able to store zero to the number of - * desired colors. 16 bits/cell is plenty for that too.) - * Since the JPEG code is intended to run in small memory model on 80x86 - * machines, we can't just allocate the histogram in one chunk. Instead - * of a true 3-D array, we use a row of pointers to 2-D arrays. Each - * pointer corresponds to a C0 value (typically 2^5 = 32 pointers) and - * each 2-D array has 2^6*2^5 = 2048 or 2^6*2^6 = 4096 entries. Note that - * on 80x86 machines, the pointer row is in near memory but the actual - * arrays are in far memory (same arrangement as we use for image arrays). - */ - -#define MAXNUMCOLORS (MAXJSAMPLE+1) /* maximum size of colormap */ - -/* These will do the right thing for either R,G,B or B,G,R color order, - * but you may not like the results for other color orders. - */ -#define HIST_C0_BITS 5 /* bits of precision in R/B histogram */ -#define HIST_C1_BITS 6 /* bits of precision in G histogram */ -#define HIST_C2_BITS 5 /* bits of precision in B/R histogram */ - -/* Number of elements along histogram axes. */ -#define HIST_C0_ELEMS (1<cquantize; - register JSAMPROW ptr; - register histptr histp; - register hist3d histogram = cquantize->histogram; - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - - for (row = 0; row < num_rows; row++) { - ptr = input_buf[row]; - for (col = width; col > 0; col--) { - /* get pixel value and index into the histogram */ - histp = & histogram[GETJSAMPLE(ptr[0]) >> C0_SHIFT] - [GETJSAMPLE(ptr[1]) >> C1_SHIFT] - [GETJSAMPLE(ptr[2]) >> C2_SHIFT]; - /* increment, check for overflow and undo increment if so. */ - if (++(*histp) <= 0) - (*histp)--; - ptr += 3; - } - } -} - - -/* - * Next we have the really interesting routines: selection of a colormap - * given the completed histogram. - * These routines work with a list of "boxes", each representing a rectangular - * subset of the input color space (to histogram precision). - */ - -typedef struct { - /* The bounds of the box (inclusive); expressed as histogram indexes */ - int c0min, c0max; - int c1min, c1max; - int c2min, c2max; - /* The volume (actually 2-norm) of the box */ - INT32 volume; - /* The number of nonzero histogram cells within this box */ - long colorcount; -} box; - -typedef box * boxptr; - - -LOCAL(boxptr) -find_biggest_color_pop (boxptr boxlist, int numboxes) -/* Find the splittable box with the largest color population */ -/* Returns NULL if no splittable boxes remain */ -{ - register boxptr boxp; - register int i; - register long maxc = 0; - boxptr which = NULL; - - for (i = 0, boxp = boxlist; i < numboxes; i++, boxp++) { - if (boxp->colorcount > maxc && boxp->volume > 0) { - which = boxp; - maxc = boxp->colorcount; - } - } - return which; -} - - -LOCAL(boxptr) -find_biggest_volume (boxptr boxlist, int numboxes) -/* Find the splittable box with the largest (scaled) volume */ -/* Returns NULL if no splittable boxes remain */ -{ - register boxptr boxp; - register int i; - register INT32 maxv = 0; - boxptr which = NULL; - - for (i = 0, boxp = boxlist; i < numboxes; i++, boxp++) { - if (boxp->volume > maxv) { - which = boxp; - maxv = boxp->volume; - } - } - return which; -} - - -LOCAL(void) -update_box (j_decompress_ptr cinfo, boxptr boxp) -/* Shrink the min/max bounds of a box to enclose only nonzero elements, */ -/* and recompute its volume and population */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - hist3d histogram = cquantize->histogram; - histptr histp; - int c0,c1,c2; - int c0min,c0max,c1min,c1max,c2min,c2max; - INT32 dist0,dist1,dist2; - long ccount; - - c0min = boxp->c0min; c0max = boxp->c0max; - c1min = boxp->c1min; c1max = boxp->c1max; - c2min = boxp->c2min; c2max = boxp->c2max; - - if (c0max > c0min) - for (c0 = c0min; c0 <= c0max; c0++) - for (c1 = c1min; c1 <= c1max; c1++) { - histp = & histogram[c0][c1][c2min]; - for (c2 = c2min; c2 <= c2max; c2++) - if (*histp++ != 0) { - boxp->c0min = c0min = c0; - goto have_c0min; - } - } - have_c0min: - if (c0max > c0min) - for (c0 = c0max; c0 >= c0min; c0--) - for (c1 = c1min; c1 <= c1max; c1++) { - histp = & histogram[c0][c1][c2min]; - for (c2 = c2min; c2 <= c2max; c2++) - if (*histp++ != 0) { - boxp->c0max = c0max = c0; - goto have_c0max; - } - } - have_c0max: - if (c1max > c1min) - for (c1 = c1min; c1 <= c1max; c1++) - for (c0 = c0min; c0 <= c0max; c0++) { - histp = & histogram[c0][c1][c2min]; - for (c2 = c2min; c2 <= c2max; c2++) - if (*histp++ != 0) { - boxp->c1min = c1min = c1; - goto have_c1min; - } - } - have_c1min: - if (c1max > c1min) - for (c1 = c1max; c1 >= c1min; c1--) - for (c0 = c0min; c0 <= c0max; c0++) { - histp = & histogram[c0][c1][c2min]; - for (c2 = c2min; c2 <= c2max; c2++) - if (*histp++ != 0) { - boxp->c1max = c1max = c1; - goto have_c1max; - } - } - have_c1max: - if (c2max > c2min) - for (c2 = c2min; c2 <= c2max; c2++) - for (c0 = c0min; c0 <= c0max; c0++) { - histp = & histogram[c0][c1min][c2]; - for (c1 = c1min; c1 <= c1max; c1++, histp += HIST_C2_ELEMS) - if (*histp != 0) { - boxp->c2min = c2min = c2; - goto have_c2min; - } - } - have_c2min: - if (c2max > c2min) - for (c2 = c2max; c2 >= c2min; c2--) - for (c0 = c0min; c0 <= c0max; c0++) { - histp = & histogram[c0][c1min][c2]; - for (c1 = c1min; c1 <= c1max; c1++, histp += HIST_C2_ELEMS) - if (*histp != 0) { - boxp->c2max = c2max = c2; - goto have_c2max; - } - } - have_c2max: - - /* Update box volume. - * We use 2-norm rather than real volume here; this biases the method - * against making long narrow boxes, and it has the side benefit that - * a box is splittable iff norm > 0. - * Since the differences are expressed in histogram-cell units, - * we have to shift back to JSAMPLE units to get consistent distances; - * after which, we scale according to the selected distance scale factors. - */ - dist0 = ((c0max - c0min) << C0_SHIFT) * C0_SCALE; - dist1 = ((c1max - c1min) << C1_SHIFT) * C1_SCALE; - dist2 = ((c2max - c2min) << C2_SHIFT) * C2_SCALE; - boxp->volume = dist0*dist0 + dist1*dist1 + dist2*dist2; - - /* Now scan remaining volume of box and compute population */ - ccount = 0; - for (c0 = c0min; c0 <= c0max; c0++) - for (c1 = c1min; c1 <= c1max; c1++) { - histp = & histogram[c0][c1][c2min]; - for (c2 = c2min; c2 <= c2max; c2++, histp++) - if (*histp != 0) { - ccount++; - } - } - boxp->colorcount = ccount; -} - - -LOCAL(int) -median_cut (j_decompress_ptr cinfo, boxptr boxlist, int numboxes, - int desired_colors) -/* Repeatedly select and split the largest box until we have enough boxes */ -{ - int n,lb; - int c0,c1,c2,cmax; - register boxptr b1,b2; - - while (numboxes < desired_colors) { - /* Select box to split. - * Current algorithm: by population for first half, then by volume. - */ - if (numboxes*2 <= desired_colors) { - b1 = find_biggest_color_pop(boxlist, numboxes); - } else { - b1 = find_biggest_volume(boxlist, numboxes); - } - if (b1 == NULL) /* no splittable boxes left! */ - break; - b2 = &boxlist[numboxes]; /* where new box will go */ - /* Copy the color bounds to the new box. */ - b2->c0max = b1->c0max; b2->c1max = b1->c1max; b2->c2max = b1->c2max; - b2->c0min = b1->c0min; b2->c1min = b1->c1min; b2->c2min = b1->c2min; - /* Choose which axis to split the box on. - * Current algorithm: longest scaled axis. - * See notes in update_box about scaling distances. - */ - c0 = ((b1->c0max - b1->c0min) << C0_SHIFT) * C0_SCALE; - c1 = ((b1->c1max - b1->c1min) << C1_SHIFT) * C1_SCALE; - c2 = ((b1->c2max - b1->c2min) << C2_SHIFT) * C2_SCALE; - /* We want to break any ties in favor of green, then red, blue last. - * This code does the right thing for R,G,B or B,G,R color orders only. - */ -#if RGB_RED == 0 - cmax = c1; n = 1; - if (c0 > cmax) { cmax = c0; n = 0; } - if (c2 > cmax) { n = 2; } -#else - cmax = c1; n = 1; - if (c2 > cmax) { cmax = c2; n = 2; } - if (c0 > cmax) { n = 0; } -#endif - /* Choose split point along selected axis, and update box bounds. - * Current algorithm: split at halfway point. - * (Since the box has been shrunk to minimum volume, - * any split will produce two nonempty subboxes.) - * Note that lb value is max for lower box, so must be < old max. - */ - switch (n) { - case 0: - lb = (b1->c0max + b1->c0min) / 2; - b1->c0max = lb; - b2->c0min = lb+1; - break; - case 1: - lb = (b1->c1max + b1->c1min) / 2; - b1->c1max = lb; - b2->c1min = lb+1; - break; - case 2: - lb = (b1->c2max + b1->c2min) / 2; - b1->c2max = lb; - b2->c2min = lb+1; - break; - } - /* Update stats for boxes */ - update_box(cinfo, b1); - update_box(cinfo, b2); - numboxes++; - } - return numboxes; -} - - -LOCAL(void) -compute_color (j_decompress_ptr cinfo, boxptr boxp, int icolor) -/* Compute representative color for a box, put it in colormap[icolor] */ -{ - /* Current algorithm: mean weighted by pixels (not colors) */ - /* Note it is important to get the rounding correct! */ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - hist3d histogram = cquantize->histogram; - histptr histp; - int c0,c1,c2; - int c0min,c0max,c1min,c1max,c2min,c2max; - long count; - long total = 0; - long c0total = 0; - long c1total = 0; - long c2total = 0; - - c0min = boxp->c0min; c0max = boxp->c0max; - c1min = boxp->c1min; c1max = boxp->c1max; - c2min = boxp->c2min; c2max = boxp->c2max; - - for (c0 = c0min; c0 <= c0max; c0++) - for (c1 = c1min; c1 <= c1max; c1++) { - histp = & histogram[c0][c1][c2min]; - for (c2 = c2min; c2 <= c2max; c2++) { - if ((count = *histp++) != 0) { - total += count; - c0total += ((c0 << C0_SHIFT) + ((1<>1)) * count; - c1total += ((c1 << C1_SHIFT) + ((1<>1)) * count; - c2total += ((c2 << C2_SHIFT) + ((1<>1)) * count; - } - } - } - - cinfo->colormap[0][icolor] = (JSAMPLE) ((c0total + (total>>1)) / total); - cinfo->colormap[1][icolor] = (JSAMPLE) ((c1total + (total>>1)) / total); - cinfo->colormap[2][icolor] = (JSAMPLE) ((c2total + (total>>1)) / total); -} - - -LOCAL(void) -select_colors (j_decompress_ptr cinfo, int desired_colors) -/* Master routine for color selection */ -{ - boxptr boxlist; - int numboxes; - int i; - - /* Allocate workspace for box list */ - boxlist = (boxptr) (*cinfo->mem->alloc_small) - ((j_common_ptr) cinfo, JPOOL_IMAGE, desired_colors * SIZEOF(box)); - /* Initialize one box containing whole space */ - numboxes = 1; - boxlist[0].c0min = 0; - boxlist[0].c0max = MAXJSAMPLE >> C0_SHIFT; - boxlist[0].c1min = 0; - boxlist[0].c1max = MAXJSAMPLE >> C1_SHIFT; - boxlist[0].c2min = 0; - boxlist[0].c2max = MAXJSAMPLE >> C2_SHIFT; - /* Shrink it to actually-used volume and set its statistics */ - update_box(cinfo, & boxlist[0]); - /* Perform median-cut to produce final box list */ - numboxes = median_cut(cinfo, boxlist, numboxes, desired_colors); - /* Compute the representative color for each box, fill colormap */ - for (i = 0; i < numboxes; i++) - compute_color(cinfo, & boxlist[i], i); - cinfo->actual_number_of_colors = numboxes; - TRACEMS1(cinfo, 1, JTRC_QUANT_SELECTED, numboxes); -} - - -/* - * These routines are concerned with the time-critical task of mapping input - * colors to the nearest color in the selected colormap. - * - * We re-use the histogram space as an "inverse color map", essentially a - * cache for the results of nearest-color searches. All colors within a - * histogram cell will be mapped to the same colormap entry, namely the one - * closest to the cell's center. This may not be quite the closest entry to - * the actual input color, but it's almost as good. A zero in the cache - * indicates we haven't found the nearest color for that cell yet; the array - * is cleared to zeroes before starting the mapping pass. When we find the - * nearest color for a cell, its colormap index plus one is recorded in the - * cache for future use. The pass2 scanning routines call fill_inverse_cmap - * when they need to use an unfilled entry in the cache. - * - * Our method of efficiently finding nearest colors is based on the "locally - * sorted search" idea described by Heckbert and on the incremental distance - * calculation described by Spencer W. Thomas in chapter III.1 of Graphics - * Gems II (James Arvo, ed. Academic Press, 1991). Thomas points out that - * the distances from a given colormap entry to each cell of the histogram can - * be computed quickly using an incremental method: the differences between - * distances to adjacent cells themselves differ by a constant. This allows a - * fairly fast implementation of the "brute force" approach of computing the - * distance from every colormap entry to every histogram cell. Unfortunately, - * it needs a work array to hold the best-distance-so-far for each histogram - * cell (because the inner loop has to be over cells, not colormap entries). - * The work array elements have to be INT32s, so the work array would need - * 256Kb at our recommended precision. This is not feasible in DOS machines. - * - * To get around these problems, we apply Thomas' method to compute the - * nearest colors for only the cells within a small subbox of the histogram. - * The work array need be only as big as the subbox, so the memory usage - * problem is solved. Furthermore, we need not fill subboxes that are never - * referenced in pass2; many images use only part of the color gamut, so a - * fair amount of work is saved. An additional advantage of this - * approach is that we can apply Heckbert's locality criterion to quickly - * eliminate colormap entries that are far away from the subbox; typically - * three-fourths of the colormap entries are rejected by Heckbert's criterion, - * and we need not compute their distances to individual cells in the subbox. - * The speed of this approach is heavily influenced by the subbox size: too - * small means too much overhead, too big loses because Heckbert's criterion - * can't eliminate as many colormap entries. Empirically the best subbox - * size seems to be about 1/512th of the histogram (1/8th in each direction). - * - * Thomas' article also describes a refined method which is asymptotically - * faster than the brute-force method, but it is also far more complex and - * cannot efficiently be applied to small subboxes. It is therefore not - * useful for programs intended to be portable to DOS machines. On machines - * with plenty of memory, filling the whole histogram in one shot with Thomas' - * refined method might be faster than the present code --- but then again, - * it might not be any faster, and it's certainly more complicated. - */ - - -/* log2(histogram cells in update box) for each axis; this can be adjusted */ -#define BOX_C0_LOG (HIST_C0_BITS-3) -#define BOX_C1_LOG (HIST_C1_BITS-3) -#define BOX_C2_LOG (HIST_C2_BITS-3) - -#define BOX_C0_ELEMS (1<actual_number_of_colors; - int maxc0, maxc1, maxc2; - int centerc0, centerc1, centerc2; - int i, x, ncolors; - INT32 minmaxdist, min_dist, max_dist, tdist; - INT32 mindist[MAXNUMCOLORS]; /* min distance to colormap entry i */ - - /* Compute true coordinates of update box's upper corner and center. - * Actually we compute the coordinates of the center of the upper-corner - * histogram cell, which are the upper bounds of the volume we care about. - * Note that since ">>" rounds down, the "center" values may be closer to - * min than to max; hence comparisons to them must be "<=", not "<". - */ - maxc0 = minc0 + ((1 << BOX_C0_SHIFT) - (1 << C0_SHIFT)); - centerc0 = (minc0 + maxc0) >> 1; - maxc1 = minc1 + ((1 << BOX_C1_SHIFT) - (1 << C1_SHIFT)); - centerc1 = (minc1 + maxc1) >> 1; - maxc2 = minc2 + ((1 << BOX_C2_SHIFT) - (1 << C2_SHIFT)); - centerc2 = (minc2 + maxc2) >> 1; - - /* For each color in colormap, find: - * 1. its minimum squared-distance to any point in the update box - * (zero if color is within update box); - * 2. its maximum squared-distance to any point in the update box. - * Both of these can be found by considering only the corners of the box. - * We save the minimum distance for each color in mindist[]; - * only the smallest maximum distance is of interest. - */ - minmaxdist = 0x7FFFFFFFL; - - for (i = 0; i < numcolors; i++) { - /* We compute the squared-c0-distance term, then add in the other two. */ - x = GETJSAMPLE(cinfo->colormap[0][i]); - if (x < minc0) { - tdist = (x - minc0) * C0_SCALE; - min_dist = tdist*tdist; - tdist = (x - maxc0) * C0_SCALE; - max_dist = tdist*tdist; - } else if (x > maxc0) { - tdist = (x - maxc0) * C0_SCALE; - min_dist = tdist*tdist; - tdist = (x - minc0) * C0_SCALE; - max_dist = tdist*tdist; - } else { - /* within cell range so no contribution to min_dist */ - min_dist = 0; - if (x <= centerc0) { - tdist = (x - maxc0) * C0_SCALE; - max_dist = tdist*tdist; - } else { - tdist = (x - minc0) * C0_SCALE; - max_dist = tdist*tdist; - } - } - - x = GETJSAMPLE(cinfo->colormap[1][i]); - if (x < minc1) { - tdist = (x - minc1) * C1_SCALE; - min_dist += tdist*tdist; - tdist = (x - maxc1) * C1_SCALE; - max_dist += tdist*tdist; - } else if (x > maxc1) { - tdist = (x - maxc1) * C1_SCALE; - min_dist += tdist*tdist; - tdist = (x - minc1) * C1_SCALE; - max_dist += tdist*tdist; - } else { - /* within cell range so no contribution to min_dist */ - if (x <= centerc1) { - tdist = (x - maxc1) * C1_SCALE; - max_dist += tdist*tdist; - } else { - tdist = (x - minc1) * C1_SCALE; - max_dist += tdist*tdist; - } - } - - x = GETJSAMPLE(cinfo->colormap[2][i]); - if (x < minc2) { - tdist = (x - minc2) * C2_SCALE; - min_dist += tdist*tdist; - tdist = (x - maxc2) * C2_SCALE; - max_dist += tdist*tdist; - } else if (x > maxc2) { - tdist = (x - maxc2) * C2_SCALE; - min_dist += tdist*tdist; - tdist = (x - minc2) * C2_SCALE; - max_dist += tdist*tdist; - } else { - /* within cell range so no contribution to min_dist */ - if (x <= centerc2) { - tdist = (x - maxc2) * C2_SCALE; - max_dist += tdist*tdist; - } else { - tdist = (x - minc2) * C2_SCALE; - max_dist += tdist*tdist; - } - } - - mindist[i] = min_dist; /* save away the results */ - if (max_dist < minmaxdist) - minmaxdist = max_dist; - } - - /* Now we know that no cell in the update box is more than minmaxdist - * away from some colormap entry. Therefore, only colors that are - * within minmaxdist of some part of the box need be considered. - */ - ncolors = 0; - for (i = 0; i < numcolors; i++) { - if (mindist[i] <= minmaxdist) - colorlist[ncolors++] = (JSAMPLE) i; - } - return ncolors; -} - - -LOCAL(void) -find_best_colors (j_decompress_ptr cinfo, int minc0, int minc1, int minc2, - int numcolors, JSAMPLE colorlist[], JSAMPLE bestcolor[]) -/* Find the closest colormap entry for each cell in the update box, - * given the list of candidate colors prepared by find_nearby_colors. - * Return the indexes of the closest entries in the bestcolor[] array. - * This routine uses Thomas' incremental distance calculation method to - * find the distance from a colormap entry to successive cells in the box. - */ -{ - int ic0, ic1, ic2; - int i, icolor; - register INT32 * bptr; /* pointer into bestdist[] array */ - JSAMPLE * cptr; /* pointer into bestcolor[] array */ - INT32 dist0, dist1; /* initial distance values */ - register INT32 dist2; /* current distance in inner loop */ - INT32 xx0, xx1; /* distance increments */ - register INT32 xx2; - INT32 inc0, inc1, inc2; /* initial values for increments */ - /* This array holds the distance to the nearest-so-far color for each cell */ - INT32 bestdist[BOX_C0_ELEMS * BOX_C1_ELEMS * BOX_C2_ELEMS]; - - /* Initialize best-distance for each cell of the update box */ - bptr = bestdist; - for (i = BOX_C0_ELEMS*BOX_C1_ELEMS*BOX_C2_ELEMS-1; i >= 0; i--) - *bptr++ = 0x7FFFFFFFL; - - /* For each color selected by find_nearby_colors, - * compute its distance to the center of each cell in the box. - * If that's less than best-so-far, update best distance and color number. - */ - - /* Nominal steps between cell centers ("x" in Thomas article) */ -#define STEP_C0 ((1 << C0_SHIFT) * C0_SCALE) -#define STEP_C1 ((1 << C1_SHIFT) * C1_SCALE) -#define STEP_C2 ((1 << C2_SHIFT) * C2_SCALE) - - for (i = 0; i < numcolors; i++) { - icolor = GETJSAMPLE(colorlist[i]); - /* Compute (square of) distance from minc0/c1/c2 to this color */ - inc0 = (minc0 - GETJSAMPLE(cinfo->colormap[0][icolor])) * C0_SCALE; - dist0 = inc0*inc0; - inc1 = (minc1 - GETJSAMPLE(cinfo->colormap[1][icolor])) * C1_SCALE; - dist0 += inc1*inc1; - inc2 = (minc2 - GETJSAMPLE(cinfo->colormap[2][icolor])) * C2_SCALE; - dist0 += inc2*inc2; - /* Form the initial difference increments */ - inc0 = inc0 * (2 * STEP_C0) + STEP_C0 * STEP_C0; - inc1 = inc1 * (2 * STEP_C1) + STEP_C1 * STEP_C1; - inc2 = inc2 * (2 * STEP_C2) + STEP_C2 * STEP_C2; - /* Now loop over all cells in box, updating distance per Thomas method */ - bptr = bestdist; - cptr = bestcolor; - xx0 = inc0; - for (ic0 = BOX_C0_ELEMS-1; ic0 >= 0; ic0--) { - dist1 = dist0; - xx1 = inc1; - for (ic1 = BOX_C1_ELEMS-1; ic1 >= 0; ic1--) { - dist2 = dist1; - xx2 = inc2; - for (ic2 = BOX_C2_ELEMS-1; ic2 >= 0; ic2--) { - if (dist2 < *bptr) { - *bptr = dist2; - *cptr = (JSAMPLE) icolor; - } - dist2 += xx2; - xx2 += 2 * STEP_C2 * STEP_C2; - bptr++; - cptr++; - } - dist1 += xx1; - xx1 += 2 * STEP_C1 * STEP_C1; - } - dist0 += xx0; - xx0 += 2 * STEP_C0 * STEP_C0; - } - } -} - - -LOCAL(void) -fill_inverse_cmap (j_decompress_ptr cinfo, int c0, int c1, int c2) -/* Fill the inverse-colormap entries in the update box that contains */ -/* histogram cell c0/c1/c2. (Only that one cell MUST be filled, but */ -/* we can fill as many others as we wish.) */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - hist3d histogram = cquantize->histogram; - int minc0, minc1, minc2; /* lower left corner of update box */ - int ic0, ic1, ic2; - register JSAMPLE * cptr; /* pointer into bestcolor[] array */ - register histptr cachep; /* pointer into main cache array */ - /* This array lists the candidate colormap indexes. */ - JSAMPLE colorlist[MAXNUMCOLORS]; - int numcolors; /* number of candidate colors */ - /* This array holds the actually closest colormap index for each cell. */ - JSAMPLE bestcolor[BOX_C0_ELEMS * BOX_C1_ELEMS * BOX_C2_ELEMS]; - - /* Convert cell coordinates to update box ID */ - c0 >>= BOX_C0_LOG; - c1 >>= BOX_C1_LOG; - c2 >>= BOX_C2_LOG; - - /* Compute true coordinates of update box's origin corner. - * Actually we compute the coordinates of the center of the corner - * histogram cell, which are the lower bounds of the volume we care about. - */ - minc0 = (c0 << BOX_C0_SHIFT) + ((1 << C0_SHIFT) >> 1); - minc1 = (c1 << BOX_C1_SHIFT) + ((1 << C1_SHIFT) >> 1); - minc2 = (c2 << BOX_C2_SHIFT) + ((1 << C2_SHIFT) >> 1); - - /* Determine which colormap entries are close enough to be candidates - * for the nearest entry to some cell in the update box. - */ - numcolors = find_nearby_colors(cinfo, minc0, minc1, minc2, colorlist); - - /* Determine the actually nearest colors. */ - find_best_colors(cinfo, minc0, minc1, minc2, numcolors, colorlist, - bestcolor); - - /* Save the best color numbers (plus 1) in the main cache array */ - c0 <<= BOX_C0_LOG; /* convert ID back to base cell indexes */ - c1 <<= BOX_C1_LOG; - c2 <<= BOX_C2_LOG; - cptr = bestcolor; - for (ic0 = 0; ic0 < BOX_C0_ELEMS; ic0++) { - for (ic1 = 0; ic1 < BOX_C1_ELEMS; ic1++) { - cachep = & histogram[c0+ic0][c1+ic1][c2]; - for (ic2 = 0; ic2 < BOX_C2_ELEMS; ic2++) { - *cachep++ = (histcell) (GETJSAMPLE(*cptr++) + 1); - } - } - } -} - - -/* - * Map some rows of pixels to the output colormapped representation. - */ - -METHODDEF(void) -pass2_no_dither (j_decompress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) -/* This version performs no dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - hist3d histogram = cquantize->histogram; - register JSAMPROW inptr, outptr; - register histptr cachep; - register int c0, c1, c2; - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - - for (row = 0; row < num_rows; row++) { - inptr = input_buf[row]; - outptr = output_buf[row]; - for (col = width; col > 0; col--) { - /* get pixel value and index into the cache */ - c0 = GETJSAMPLE(*inptr++) >> C0_SHIFT; - c1 = GETJSAMPLE(*inptr++) >> C1_SHIFT; - c2 = GETJSAMPLE(*inptr++) >> C2_SHIFT; - cachep = & histogram[c0][c1][c2]; - /* If we have not seen this color before, find nearest colormap entry */ - /* and update the cache */ - if (*cachep == 0) - fill_inverse_cmap(cinfo, c0,c1,c2); - /* Now emit the colormap index for this cell */ - *outptr++ = (JSAMPLE) (*cachep - 1); - } - } -} - - -METHODDEF(void) -pass2_fs_dither (j_decompress_ptr cinfo, - JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows) -/* This version performs Floyd-Steinberg dithering */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - hist3d histogram = cquantize->histogram; - register LOCFSERROR cur0, cur1, cur2; /* current error or pixel value */ - LOCFSERROR belowerr0, belowerr1, belowerr2; /* error for pixel below cur */ - LOCFSERROR bpreverr0, bpreverr1, bpreverr2; /* error for below/prev col */ - register FSERRPTR errorptr; /* => fserrors[] at column before current */ - JSAMPROW inptr; /* => current input pixel */ - JSAMPROW outptr; /* => current output pixel */ - histptr cachep; - int dir; /* +1 or -1 depending on direction */ - int dir3; /* 3*dir, for advancing inptr & errorptr */ - int row; - JDIMENSION col; - JDIMENSION width = cinfo->output_width; - JSAMPLE *range_limit = cinfo->sample_range_limit; - int *error_limit = cquantize->error_limiter; - JSAMPROW colormap0 = cinfo->colormap[0]; - JSAMPROW colormap1 = cinfo->colormap[1]; - JSAMPROW colormap2 = cinfo->colormap[2]; - SHIFT_TEMPS - - for (row = 0; row < num_rows; row++) { - inptr = input_buf[row]; - outptr = output_buf[row]; - if (cquantize->on_odd_row) { - /* work right to left in this row */ - inptr += (width-1) * 3; /* so point to rightmost pixel */ - outptr += width-1; - dir = -1; - dir3 = -3; - errorptr = cquantize->fserrors + (width+1)*3; /* => entry after last column */ - cquantize->on_odd_row = FALSE; /* flip for next time */ - } else { - /* work left to right in this row */ - dir = 1; - dir3 = 3; - errorptr = cquantize->fserrors; /* => entry before first real column */ - cquantize->on_odd_row = TRUE; /* flip for next time */ - } - /* Preset error values: no error propagated to first pixel from left */ - cur0 = cur1 = cur2 = 0; - /* and no error propagated to row below yet */ - belowerr0 = belowerr1 = belowerr2 = 0; - bpreverr0 = bpreverr1 = bpreverr2 = 0; - - for (col = width; col > 0; col--) { - /* curN holds the error propagated from the previous pixel on the - * current line. Add the error propagated from the previous line - * to form the complete error correction term for this pixel, and - * round the error term (which is expressed * 16) to an integer. - * RIGHT_SHIFT rounds towards minus infinity, so adding 8 is correct - * for either sign of the error value. - * Note: errorptr points to *previous* column's array entry. - */ - cur0 = RIGHT_SHIFT(cur0 + errorptr[dir3+0] + 8, 4); - cur1 = RIGHT_SHIFT(cur1 + errorptr[dir3+1] + 8, 4); - cur2 = RIGHT_SHIFT(cur2 + errorptr[dir3+2] + 8, 4); - /* Limit the error using transfer function set by init_error_limit. - * See comments with init_error_limit for rationale. - */ - cur0 = error_limit[cur0]; - cur1 = error_limit[cur1]; - cur2 = error_limit[cur2]; - /* Form pixel value + error, and range-limit to 0..MAXJSAMPLE. - * The maximum error is +- MAXJSAMPLE (or less with error limiting); - * this sets the required size of the range_limit array. - */ - cur0 += GETJSAMPLE(inptr[0]); - cur1 += GETJSAMPLE(inptr[1]); - cur2 += GETJSAMPLE(inptr[2]); - cur0 = GETJSAMPLE(range_limit[cur0]); - cur1 = GETJSAMPLE(range_limit[cur1]); - cur2 = GETJSAMPLE(range_limit[cur2]); - /* Index into the cache with adjusted pixel value */ - cachep = & histogram[cur0>>C0_SHIFT][cur1>>C1_SHIFT][cur2>>C2_SHIFT]; - /* If we have not seen this color before, find nearest colormap */ - /* entry and update the cache */ - if (*cachep == 0) - fill_inverse_cmap(cinfo, cur0>>C0_SHIFT,cur1>>C1_SHIFT,cur2>>C2_SHIFT); - /* Now emit the colormap index for this cell */ - { register int pixcode = *cachep - 1; - *outptr = (JSAMPLE) pixcode; - /* Compute representation error for this pixel */ - cur0 -= GETJSAMPLE(colormap0[pixcode]); - cur1 -= GETJSAMPLE(colormap1[pixcode]); - cur2 -= GETJSAMPLE(colormap2[pixcode]); - } - /* Compute error fractions to be propagated to adjacent pixels. - * Add these into the running sums, and simultaneously shift the - * next-line error sums left by 1 column. - */ - { register LOCFSERROR bnexterr, delta; - - bnexterr = cur0; /* Process component 0 */ - delta = cur0 * 2; - cur0 += delta; /* form error * 3 */ - errorptr[0] = (FSERROR) (bpreverr0 + cur0); - cur0 += delta; /* form error * 5 */ - bpreverr0 = belowerr0 + cur0; - belowerr0 = bnexterr; - cur0 += delta; /* form error * 7 */ - bnexterr = cur1; /* Process component 1 */ - delta = cur1 * 2; - cur1 += delta; /* form error * 3 */ - errorptr[1] = (FSERROR) (bpreverr1 + cur1); - cur1 += delta; /* form error * 5 */ - bpreverr1 = belowerr1 + cur1; - belowerr1 = bnexterr; - cur1 += delta; /* form error * 7 */ - bnexterr = cur2; /* Process component 2 */ - delta = cur2 * 2; - cur2 += delta; /* form error * 3 */ - errorptr[2] = (FSERROR) (bpreverr2 + cur2); - cur2 += delta; /* form error * 5 */ - bpreverr2 = belowerr2 + cur2; - belowerr2 = bnexterr; - cur2 += delta; /* form error * 7 */ - } - /* At this point curN contains the 7/16 error value to be propagated - * to the next pixel on the current line, and all the errors for the - * next line have been shifted over. We are therefore ready to move on. - */ - inptr += dir3; /* Advance pixel pointers to next column */ - outptr += dir; - errorptr += dir3; /* advance errorptr to current column */ - } - /* Post-loop cleanup: we must unload the final error values into the - * final fserrors[] entry. Note we need not unload belowerrN because - * it is for the dummy column before or after the actual array. - */ - errorptr[0] = (FSERROR) bpreverr0; /* unload prev errs into array */ - errorptr[1] = (FSERROR) bpreverr1; - errorptr[2] = (FSERROR) bpreverr2; - } -} - - -/* - * Initialize the error-limiting transfer function (lookup table). - * The raw F-S error computation can potentially compute error values of up to - * +- MAXJSAMPLE. But we want the maximum correction applied to a pixel to be - * much less, otherwise obviously wrong pixels will be created. (Typical - * effects include weird fringes at color-area boundaries, isolated bright - * pixels in a dark area, etc.) The standard advice for avoiding this problem - * is to ensure that the "corners" of the color cube are allocated as output - * colors; then repeated errors in the same direction cannot cause cascading - * error buildup. However, that only prevents the error from getting - * completely out of hand; Aaron Giles reports that error limiting improves - * the results even with corner colors allocated. - * A simple clamping of the error values to about +- MAXJSAMPLE/8 works pretty - * well, but the smoother transfer function used below is even better. Thanks - * to Aaron Giles for this idea. - */ - -LOCAL(void) -init_error_limit (j_decompress_ptr cinfo) -/* Allocate and fill in the error_limiter table */ -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - int * table; - int in, out; - - table = (int *) (*cinfo->mem->alloc_small) - ((j_common_ptr) cinfo, JPOOL_IMAGE, (MAXJSAMPLE*2+1) * SIZEOF(int)); - table += MAXJSAMPLE; /* so can index -MAXJSAMPLE .. +MAXJSAMPLE */ - cquantize->error_limiter = table; - -#define STEPSIZE ((MAXJSAMPLE+1)/16) - /* Map errors 1:1 up to +- MAXJSAMPLE/16 */ - out = 0; - for (in = 0; in < STEPSIZE; in++, out++) { - table[in] = out; table[-in] = -out; - } - /* Map errors 1:2 up to +- 3*MAXJSAMPLE/16 */ - for (; in < STEPSIZE*3; in++, out += (in&1) ? 0 : 1) { - table[in] = out; table[-in] = -out; - } - /* Clamp the rest to final out value (which is (MAXJSAMPLE+1)/8) */ - for (; in <= MAXJSAMPLE; in++) { - table[in] = out; table[-in] = -out; - } -#undef STEPSIZE -} - - -/* - * Finish up at the end of each pass. - */ - -METHODDEF(void) -finish_pass1 (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - - /* Select the representative colors and fill in cinfo->colormap */ - cinfo->colormap = cquantize->sv_colormap; - select_colors(cinfo, cquantize->desired); - /* Force next pass to zero the color index table */ - cquantize->needs_zeroed = TRUE; -} - - -METHODDEF(void) -finish_pass2 (j_decompress_ptr cinfo) -{ - /* no work */ -} - - -/* - * Initialize for each processing pass. - */ - -METHODDEF(void) -start_pass_2_quant (j_decompress_ptr cinfo, boolean is_pre_scan) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - hist3d histogram = cquantize->histogram; - int i; - - /* Only F-S dithering or no dithering is supported. */ - /* If user asks for ordered dither, give him F-S. */ - if (cinfo->dither_mode != JDITHER_NONE) - cinfo->dither_mode = JDITHER_FS; - - if (is_pre_scan) { - /* Set up method pointers */ - cquantize->pub.color_quantize = prescan_quantize; - cquantize->pub.finish_pass = finish_pass1; - cquantize->needs_zeroed = TRUE; /* Always zero histogram */ - } else { - /* Set up method pointers */ - if (cinfo->dither_mode == JDITHER_FS) - cquantize->pub.color_quantize = pass2_fs_dither; - else - cquantize->pub.color_quantize = pass2_no_dither; - cquantize->pub.finish_pass = finish_pass2; - - /* Make sure color count is acceptable */ - i = cinfo->actual_number_of_colors; - if (i < 1) - ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, 1); - if (i > MAXNUMCOLORS) - ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXNUMCOLORS); - - if (cinfo->dither_mode == JDITHER_FS) { - size_t arraysize = (size_t) ((cinfo->output_width + 2) * - (3 * SIZEOF(FSERROR))); - /* Allocate Floyd-Steinberg workspace if we didn't already. */ - if (cquantize->fserrors == NULL) - cquantize->fserrors = (FSERRPTR) (*cinfo->mem->alloc_large) - ((j_common_ptr) cinfo, JPOOL_IMAGE, arraysize); - /* Initialize the propagated errors to zero. */ - jzero_far((void FAR *) cquantize->fserrors, arraysize); - /* Make the error-limit table if we didn't already. */ - if (cquantize->error_limiter == NULL) - init_error_limit(cinfo); - cquantize->on_odd_row = FALSE; - } - - } - /* Zero the histogram or inverse color map, if necessary */ - if (cquantize->needs_zeroed) { - for (i = 0; i < HIST_C0_ELEMS; i++) { - jzero_far((void FAR *) histogram[i], - HIST_C1_ELEMS*HIST_C2_ELEMS * SIZEOF(histcell)); - } - cquantize->needs_zeroed = FALSE; - } -} - - -/* - * Switch to a new external colormap between output passes. - */ - -METHODDEF(void) -new_color_map_2_quant (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize = (my_cquantize_ptr) cinfo->cquantize; - - /* Reset the inverse color map */ - cquantize->needs_zeroed = TRUE; -} - - -/* - * Module initialization routine for 2-pass color quantization. - */ - -GLOBAL(void) -jinit_2pass_quantizer (j_decompress_ptr cinfo) -{ - my_cquantize_ptr cquantize; - int i; - - cquantize = (my_cquantize_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_cquantizer)); - cinfo->cquantize = (struct jpeg_color_quantizer *) cquantize; - cquantize->pub.start_pass = start_pass_2_quant; - cquantize->pub.new_color_map = new_color_map_2_quant; - cquantize->fserrors = NULL; /* flag optional arrays not allocated */ - cquantize->error_limiter = NULL; - - /* Make sure jdmaster didn't give me a case I can't handle */ - if (cinfo->out_color_components != 3) - ERREXIT(cinfo, JERR_NOTIMPL); - - /* Allocate the histogram/inverse colormap storage */ - cquantize->histogram = (hist3d) (*cinfo->mem->alloc_small) - ((j_common_ptr) cinfo, JPOOL_IMAGE, HIST_C0_ELEMS * SIZEOF(hist2d)); - for (i = 0; i < HIST_C0_ELEMS; i++) { - cquantize->histogram[i] = (hist2d) (*cinfo->mem->alloc_large) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - HIST_C1_ELEMS*HIST_C2_ELEMS * SIZEOF(histcell)); - } - cquantize->needs_zeroed = TRUE; /* histogram is garbage now */ - - /* Allocate storage for the completed colormap, if required. - * We do this now since it is FAR storage and may affect - * the memory manager's space calculations. - */ - if (cinfo->enable_2pass_quant) { - /* Make sure color count is acceptable */ - int desired = cinfo->desired_number_of_colors; - /* Lower bound on # of colors ... somewhat arbitrary as long as > 0 */ - if (desired < 8) - ERREXIT1(cinfo, JERR_QUANT_FEW_COLORS, 8); - /* Make sure colormap indexes can be represented by JSAMPLEs */ - if (desired > MAXNUMCOLORS) - ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, MAXNUMCOLORS); - cquantize->sv_colormap = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo,JPOOL_IMAGE, (JDIMENSION) desired, (JDIMENSION) 3); - cquantize->desired = desired; - } else - cquantize->sv_colormap = NULL; - - /* Only F-S dithering or no dithering is supported. */ - /* If user asks for ordered dither, give him F-S. */ - if (cinfo->dither_mode != JDITHER_NONE) - cinfo->dither_mode = JDITHER_FS; - - /* Allocate Floyd-Steinberg workspace if necessary. - * This isn't really needed until pass 2, but again it is FAR storage. - * Although we will cope with a later change in dither_mode, - * we do not promise to honor max_memory_to_use if dither_mode changes. - */ - if (cinfo->dither_mode == JDITHER_FS) { - cquantize->fserrors = (FSERRPTR) (*cinfo->mem->alloc_large) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (size_t) ((cinfo->output_width + 2) * (3 * SIZEOF(FSERROR)))); - /* Might as well create the error-limiting table too. */ - init_error_limit(cinfo); - } -} - -#endif /* QUANT_2PASS_SUPPORTED */ diff --git a/project/jni/jpeg/jutils.c b/project/jni/jpeg/jutils.c deleted file mode 100644 index d18a95556..000000000 --- a/project/jni/jpeg/jutils.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * jutils.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains tables and miscellaneous utility routines needed - * for both compression and decompression. - * Note we prefix all global names with "j" to minimize conflicts with - * a surrounding application. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" - - -/* - * jpeg_zigzag_order[i] is the zigzag-order position of the i'th element - * of a DCT block read in natural order (left to right, top to bottom). - */ - -#if 0 /* This table is not actually needed in v6a */ - -const int jpeg_zigzag_order[DCTSIZE2] = { - 0, 1, 5, 6, 14, 15, 27, 28, - 2, 4, 7, 13, 16, 26, 29, 42, - 3, 8, 12, 17, 25, 30, 41, 43, - 9, 11, 18, 24, 31, 40, 44, 53, - 10, 19, 23, 32, 39, 45, 52, 54, - 20, 22, 33, 38, 46, 51, 55, 60, - 21, 34, 37, 47, 50, 56, 59, 61, - 35, 36, 48, 49, 57, 58, 62, 63 -}; - -#endif - -/* - * jpeg_natural_order[i] is the natural-order position of the i'th element - * of zigzag order. - * - * When reading corrupted data, the Huffman decoders could attempt - * to reference an entry beyond the end of this array (if the decoded - * zero run length reaches past the end of the block). To prevent - * wild stores without adding an inner-loop test, we put some extra - * "63"s after the real entries. This will cause the extra coefficient - * to be stored in location 63 of the block, not somewhere random. - * The worst case would be a run-length of 15, which means we need 16 - * fake entries. - */ - -const int jpeg_natural_order[DCTSIZE2+16] = { - 0, 1, 8, 16, 9, 2, 3, 10, - 17, 24, 32, 25, 18, 11, 4, 5, - 12, 19, 26, 33, 40, 48, 41, 34, - 27, 20, 13, 6, 7, 14, 21, 28, - 35, 42, 49, 56, 57, 50, 43, 36, - 29, 22, 15, 23, 30, 37, 44, 51, - 58, 59, 52, 45, 38, 31, 39, 46, - 53, 60, 61, 54, 47, 55, 62, 63, - 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ - 63, 63, 63, 63, 63, 63, 63, 63 -}; - - -/* - * Arithmetic utilities - */ - -GLOBAL(long) -jdiv_round_up (long a, long b) -/* Compute a/b rounded up to next integer, ie, ceil(a/b) */ -/* Assumes a >= 0, b > 0 */ -{ - return (a + b - 1L) / b; -} - - -GLOBAL(long) -jround_up (long a, long b) -/* Compute a rounded up to next multiple of b, ie, ceil(a/b)*b */ -/* Assumes a >= 0, b > 0 */ -{ - a += b - 1L; - return a - (a % b); -} - - -/* On normal machines we can apply MEMCOPY() and MEMZERO() to sample arrays - * and coefficient-block arrays. This won't work on 80x86 because the arrays - * are FAR and we're assuming a small-pointer memory model. However, some - * DOS compilers provide far-pointer versions of memcpy() and memset() even - * in the small-model libraries. These will be used if USE_FMEM is defined. - * Otherwise, the routines below do it the hard way. (The performance cost - * is not all that great, because these routines aren't very heavily used.) - */ - -#ifndef NEED_FAR_POINTERS /* normal case, same as regular macros */ -#define FMEMCOPY(dest,src,size) MEMCOPY(dest,src,size) -#define FMEMZERO(target,size) MEMZERO(target,size) -#else /* 80x86 case, define if we can */ -#ifdef USE_FMEM -#define FMEMCOPY(dest,src,size) _fmemcpy((void FAR *)(dest), (const void FAR *)(src), (size_t)(size)) -#define FMEMZERO(target,size) _fmemset((void FAR *)(target), 0, (size_t)(size)) -#endif -#endif - - -GLOBAL(void) -jcopy_sample_rows (JSAMPARRAY input_array, int source_row, - JSAMPARRAY output_array, int dest_row, - int num_rows, JDIMENSION num_cols) -/* Copy some rows of samples from one place to another. - * num_rows rows are copied from input_array[source_row++] - * to output_array[dest_row++]; these areas may overlap for duplication. - * The source and destination arrays must be at least as wide as num_cols. - */ -{ - register JSAMPROW inptr, outptr; -#ifdef FMEMCOPY - register size_t count = (size_t) (num_cols * SIZEOF(JSAMPLE)); -#else - register JDIMENSION count; -#endif - register int row; - - input_array += source_row; - output_array += dest_row; - - for (row = num_rows; row > 0; row--) { - inptr = *input_array++; - outptr = *output_array++; -#ifdef FMEMCOPY - FMEMCOPY(outptr, inptr, count); -#else - for (count = num_cols; count > 0; count--) - *outptr++ = *inptr++; /* needn't bother with GETJSAMPLE() here */ -#endif - } -} - - -GLOBAL(void) -jcopy_block_row (JBLOCKROW input_row, JBLOCKROW output_row, - JDIMENSION num_blocks) -/* Copy a row of coefficient blocks from one place to another. */ -{ -#ifdef FMEMCOPY - FMEMCOPY(output_row, input_row, num_blocks * (DCTSIZE2 * SIZEOF(JCOEF))); -#else - register JCOEFPTR inptr, outptr; - register long count; - - inptr = (JCOEFPTR) input_row; - outptr = (JCOEFPTR) output_row; - for (count = (long) num_blocks * DCTSIZE2; count > 0; count--) { - *outptr++ = *inptr++; - } -#endif -} - - -GLOBAL(void) -jzero_far (void FAR * target, size_t bytestozero) -/* Zero out a chunk of FAR memory. */ -/* This might be sample-array data, block-array data, or alloc_large data. */ -{ -#ifdef FMEMZERO - FMEMZERO(target, bytestozero); -#else - register char FAR * ptr = (char FAR *) target; - register size_t count; - - for (count = bytestozero; count > 0; count--) { - *ptr++ = 0; - } -#endif -} diff --git a/project/jni/jpeg/jversion.h b/project/jni/jpeg/jversion.h deleted file mode 100644 index 6472c58d3..000000000 --- a/project/jni/jpeg/jversion.h +++ /dev/null @@ -1,14 +0,0 @@ -/* - * jversion.h - * - * Copyright (C) 1991-1998, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains software version identification. - */ - - -#define JVERSION "6b 27-Mar-1998" - -#define JCOPYRIGHT "Copyright (C) 1998, Thomas G. Lane" diff --git a/project/jni/jpeg/libjpeg.doc b/project/jni/jpeg/libjpeg.doc deleted file mode 100644 index 689b206c0..000000000 --- a/project/jni/jpeg/libjpeg.doc +++ /dev/null @@ -1,3006 +0,0 @@ -USING THE IJG JPEG LIBRARY - -Copyright (C) 1994-1998, Thomas G. Lane. -This file is part of the Independent JPEG Group's software. -For conditions of distribution and use, see the accompanying README file. - - -This file describes how to use the IJG JPEG library within an application -program. Read it if you want to write a program that uses the library. - -The file example.c provides heavily commented skeleton code for calling the -JPEG library. Also see jpeglib.h (the include file to be used by application -programs) for full details about data structures and function parameter lists. -The library source code, of course, is the ultimate reference. - -Note that there have been *major* changes from the application interface -presented by IJG version 4 and earlier versions. The old design had several -inherent limitations, and it had accumulated a lot of cruft as we added -features while trying to minimize application-interface changes. We have -sacrificed backward compatibility in the version 5 rewrite, but we think the -improvements justify this. - - -TABLE OF CONTENTS ------------------ - -Overview: - Functions provided by the library - Outline of typical usage -Basic library usage: - Data formats - Compression details - Decompression details - Mechanics of usage: include files, linking, etc -Advanced features: - Compression parameter selection - Decompression parameter selection - Special color spaces - Error handling - Compressed data handling (source and destination managers) - I/O suspension - Progressive JPEG support - Buffered-image mode - Abbreviated datastreams and multiple images - Special markers - Raw (downsampled) image data - Really raw data: DCT coefficients - Progress monitoring - Memory management - Memory usage - Library compile-time options - Portability considerations - Notes for MS-DOS implementors - -You should read at least the overview and basic usage sections before trying -to program with the library. The sections on advanced features can be read -if and when you need them. - - -OVERVIEW -======== - -Functions provided by the library ---------------------------------- - -The IJG JPEG library provides C code to read and write JPEG-compressed image -files. The surrounding application program receives or supplies image data a -scanline at a time, using a straightforward uncompressed image format. All -details of color conversion and other preprocessing/postprocessing can be -handled by the library. - -The library includes a substantial amount of code that is not covered by the -JPEG standard but is necessary for typical applications of JPEG. These -functions preprocess the image before JPEG compression or postprocess it after -decompression. They include colorspace conversion, downsampling/upsampling, -and color quantization. The application indirectly selects use of this code -by specifying the format in which it wishes to supply or receive image data. -For example, if colormapped output is requested, then the decompression -library automatically invokes color quantization. - -A wide range of quality vs. speed tradeoffs are possible in JPEG processing, -and even more so in decompression postprocessing. The decompression library -provides multiple implementations that cover most of the useful tradeoffs, -ranging from very-high-quality down to fast-preview operation. On the -compression side we have generally not provided low-quality choices, since -compression is normally less time-critical. It should be understood that the -low-quality modes may not meet the JPEG standard's accuracy requirements; -nonetheless, they are useful for viewers. - -A word about functions *not* provided by the library. We handle a subset of -the ISO JPEG standard; most baseline, extended-sequential, and progressive -JPEG processes are supported. (Our subset includes all features now in common -use.) Unsupported ISO options include: - * Hierarchical storage - * Lossless JPEG - * Arithmetic entropy coding (unsupported for legal reasons) - * DNL marker - * Nonintegral subsampling ratios -We support both 8- and 12-bit data precision, but this is a compile-time -choice rather than a run-time choice; hence it is difficult to use both -precisions in a single application. - -By itself, the library handles only interchange JPEG datastreams --- in -particular the widely used JFIF file format. The library can be used by -surrounding code to process interchange or abbreviated JPEG datastreams that -are embedded in more complex file formats. (For example, this library is -used by the free LIBTIFF library to support JPEG compression in TIFF.) - - -Outline of typical usage ------------------------- - -The rough outline of a JPEG compression operation is: - - Allocate and initialize a JPEG compression object - Specify the destination for the compressed data (eg, a file) - Set parameters for compression, including image size & colorspace - jpeg_start_compress(...); - while (scan lines remain to be written) - jpeg_write_scanlines(...); - jpeg_finish_compress(...); - Release the JPEG compression object - -A JPEG compression object holds parameters and working state for the JPEG -library. We make creation/destruction of the object separate from starting -or finishing compression of an image; the same object can be re-used for a -series of image compression operations. This makes it easy to re-use the -same parameter settings for a sequence of images. Re-use of a JPEG object -also has important implications for processing abbreviated JPEG datastreams, -as discussed later. - -The image data to be compressed is supplied to jpeg_write_scanlines() from -in-memory buffers. If the application is doing file-to-file compression, -reading image data from the source file is the application's responsibility. -The library emits compressed data by calling a "data destination manager", -which typically will write the data into a file; but the application can -provide its own destination manager to do something else. - -Similarly, the rough outline of a JPEG decompression operation is: - - Allocate and initialize a JPEG decompression object - Specify the source of the compressed data (eg, a file) - Call jpeg_read_header() to obtain image info - Set parameters for decompression - jpeg_start_decompress(...); - while (scan lines remain to be read) - jpeg_read_scanlines(...); - jpeg_finish_decompress(...); - Release the JPEG decompression object - -This is comparable to the compression outline except that reading the -datastream header is a separate step. This is helpful because information -about the image's size, colorspace, etc is available when the application -selects decompression parameters. For example, the application can choose an -output scaling ratio that will fit the image into the available screen size. - -The decompression library obtains compressed data by calling a data source -manager, which typically will read the data from a file; but other behaviors -can be obtained with a custom source manager. Decompressed data is delivered -into in-memory buffers passed to jpeg_read_scanlines(). - -It is possible to abort an incomplete compression or decompression operation -by calling jpeg_abort(); or, if you do not need to retain the JPEG object, -simply release it by calling jpeg_destroy(). - -JPEG compression and decompression objects are two separate struct types. -However, they share some common fields, and certain routines such as -jpeg_destroy() can work on either type of object. - -The JPEG library has no static variables: all state is in the compression -or decompression object. Therefore it is possible to process multiple -compression and decompression operations concurrently, using multiple JPEG -objects. - -Both compression and decompression can be done in an incremental memory-to- -memory fashion, if suitable source/destination managers are used. See the -section on "I/O suspension" for more details. - - -BASIC LIBRARY USAGE -=================== - -Data formats ------------- - -Before diving into procedural details, it is helpful to understand the -image data format that the JPEG library expects or returns. - -The standard input image format is a rectangular array of pixels, with each -pixel having the same number of "component" or "sample" values (color -channels). You must specify how many components there are and the colorspace -interpretation of the components. Most applications will use RGB data -(three components per pixel) or grayscale data (one component per pixel). -PLEASE NOTE THAT RGB DATA IS THREE SAMPLES PER PIXEL, GRAYSCALE ONLY ONE. -A remarkable number of people manage to miss this, only to find that their -programs don't work with grayscale JPEG files. - -There is no provision for colormapped input. JPEG files are always full-color -or full grayscale (or sometimes another colorspace such as CMYK). You can -feed in a colormapped image by expanding it to full-color format. However -JPEG often doesn't work very well with source data that has been colormapped, -because of dithering noise. This is discussed in more detail in the JPEG FAQ -and the other references mentioned in the README file. - -Pixels are stored by scanlines, with each scanline running from left to -right. The component values for each pixel are adjacent in the row; for -example, R,G,B,R,G,B,R,G,B,... for 24-bit RGB color. Each scanline is an -array of data type JSAMPLE --- which is typically "unsigned char", unless -you've changed jmorecfg.h. (You can also change the RGB pixel layout, say -to B,G,R order, by modifying jmorecfg.h. But see the restrictions listed in -that file before doing so.) - -A 2-D array of pixels is formed by making a list of pointers to the starts of -scanlines; so the scanlines need not be physically adjacent in memory. Even -if you process just one scanline at a time, you must make a one-element -pointer array to conform to this structure. Pointers to JSAMPLE rows are of -type JSAMPROW, and the pointer to the pointer array is of type JSAMPARRAY. - -The library accepts or supplies one or more complete scanlines per call. -It is not possible to process part of a row at a time. Scanlines are always -processed top-to-bottom. You can process an entire image in one call if you -have it all in memory, but usually it's simplest to process one scanline at -a time. - -For best results, source data values should have the precision specified by -BITS_IN_JSAMPLE (normally 8 bits). For instance, if you choose to compress -data that's only 6 bits/channel, you should left-justify each value in a -byte before passing it to the compressor. If you need to compress data -that has more than 8 bits/channel, compile with BITS_IN_JSAMPLE = 12. -(See "Library compile-time options", later.) - - -The data format returned by the decompressor is the same in all details, -except that colormapped output is supported. (Again, a JPEG file is never -colormapped. But you can ask the decompressor to perform on-the-fly color -quantization to deliver colormapped output.) If you request colormapped -output then the returned data array contains a single JSAMPLE per pixel; -its value is an index into a color map. The color map is represented as -a 2-D JSAMPARRAY in which each row holds the values of one color component, -that is, colormap[i][j] is the value of the i'th color component for pixel -value (map index) j. Note that since the colormap indexes are stored in -JSAMPLEs, the maximum number of colors is limited by the size of JSAMPLE -(ie, at most 256 colors for an 8-bit JPEG library). - - -Compression details -------------------- - -Here we revisit the JPEG compression outline given in the overview. - -1. Allocate and initialize a JPEG compression object. - -A JPEG compression object is a "struct jpeg_compress_struct". (It also has -a bunch of subsidiary structures which are allocated via malloc(), but the -application doesn't control those directly.) This struct can be just a local -variable in the calling routine, if a single routine is going to execute the -whole JPEG compression sequence. Otherwise it can be static or allocated -from malloc(). - -You will also need a structure representing a JPEG error handler. The part -of this that the library cares about is a "struct jpeg_error_mgr". If you -are providing your own error handler, you'll typically want to embed the -jpeg_error_mgr struct in a larger structure; this is discussed later under -"Error handling". For now we'll assume you are just using the default error -handler. The default error handler will print JPEG error/warning messages -on stderr, and it will call exit() if a fatal error occurs. - -You must initialize the error handler structure, store a pointer to it into -the JPEG object's "err" field, and then call jpeg_create_compress() to -initialize the rest of the JPEG object. - -Typical code for this step, if you are using the default error handler, is - - struct jpeg_compress_struct cinfo; - struct jpeg_error_mgr jerr; - ... - cinfo.err = jpeg_std_error(&jerr); - jpeg_create_compress(&cinfo); - -jpeg_create_compress allocates a small amount of memory, so it could fail -if you are out of memory. In that case it will exit via the error handler; -that's why the error handler must be initialized first. - - -2. Specify the destination for the compressed data (eg, a file). - -As previously mentioned, the JPEG library delivers compressed data to a -"data destination" module. The library includes one data destination -module which knows how to write to a stdio stream. You can use your own -destination module if you want to do something else, as discussed later. - -If you use the standard destination module, you must open the target stdio -stream beforehand. Typical code for this step looks like: - - FILE * outfile; - ... - if ((outfile = fopen(filename, "wb")) == NULL) { - fprintf(stderr, "can't open %s\n", filename); - exit(1); - } - jpeg_stdio_dest(&cinfo, outfile); - -where the last line invokes the standard destination module. - -WARNING: it is critical that the binary compressed data be delivered to the -output file unchanged. On non-Unix systems the stdio library may perform -newline translation or otherwise corrupt binary data. To suppress this -behavior, you may need to use a "b" option to fopen (as shown above), or use -setmode() or another routine to put the stdio stream in binary mode. See -cjpeg.c and djpeg.c for code that has been found to work on many systems. - -You can select the data destination after setting other parameters (step 3), -if that's more convenient. You may not change the destination between -calling jpeg_start_compress() and jpeg_finish_compress(). - - -3. Set parameters for compression, including image size & colorspace. - -You must supply information about the source image by setting the following -fields in the JPEG object (cinfo structure): - - image_width Width of image, in pixels - image_height Height of image, in pixels - input_components Number of color channels (samples per pixel) - in_color_space Color space of source image - -The image dimensions are, hopefully, obvious. JPEG supports image dimensions -of 1 to 64K pixels in either direction. The input color space is typically -RGB or grayscale, and input_components is 3 or 1 accordingly. (See "Special -color spaces", later, for more info.) The in_color_space field must be -assigned one of the J_COLOR_SPACE enum constants, typically JCS_RGB or -JCS_GRAYSCALE. - -JPEG has a large number of compression parameters that determine how the -image is encoded. Most applications don't need or want to know about all -these parameters. You can set all the parameters to reasonable defaults by -calling jpeg_set_defaults(); then, if there are particular values you want -to change, you can do so after that. The "Compression parameter selection" -section tells about all the parameters. - -You must set in_color_space correctly before calling jpeg_set_defaults(), -because the defaults depend on the source image colorspace. However the -other three source image parameters need not be valid until you call -jpeg_start_compress(). There's no harm in calling jpeg_set_defaults() more -than once, if that happens to be convenient. - -Typical code for a 24-bit RGB source image is - - cinfo.image_width = Width; /* image width and height, in pixels */ - cinfo.image_height = Height; - cinfo.input_components = 3; /* # of color components per pixel */ - cinfo.in_color_space = JCS_RGB; /* colorspace of input image */ - - jpeg_set_defaults(&cinfo); - /* Make optional parameter settings here */ - - -4. jpeg_start_compress(...); - -After you have established the data destination and set all the necessary -source image info and other parameters, call jpeg_start_compress() to begin -a compression cycle. This will initialize internal state, allocate working -storage, and emit the first few bytes of the JPEG datastream header. - -Typical code: - - jpeg_start_compress(&cinfo, TRUE); - -The "TRUE" parameter ensures that a complete JPEG interchange datastream -will be written. This is appropriate in most cases. If you think you might -want to use an abbreviated datastream, read the section on abbreviated -datastreams, below. - -Once you have called jpeg_start_compress(), you may not alter any JPEG -parameters or other fields of the JPEG object until you have completed -the compression cycle. - - -5. while (scan lines remain to be written) - jpeg_write_scanlines(...); - -Now write all the required image data by calling jpeg_write_scanlines() -one or more times. You can pass one or more scanlines in each call, up -to the total image height. In most applications it is convenient to pass -just one or a few scanlines at a time. The expected format for the passed -data is discussed under "Data formats", above. - -Image data should be written in top-to-bottom scanline order. The JPEG spec -contains some weasel wording about how top and bottom are application-defined -terms (a curious interpretation of the English language...) but if you want -your files to be compatible with everyone else's, you WILL use top-to-bottom -order. If the source data must be read in bottom-to-top order, you can use -the JPEG library's virtual array mechanism to invert the data efficiently. -Examples of this can be found in the sample application cjpeg. - -The library maintains a count of the number of scanlines written so far -in the next_scanline field of the JPEG object. Usually you can just use -this variable as the loop counter, so that the loop test looks like -"while (cinfo.next_scanline < cinfo.image_height)". - -Code for this step depends heavily on the way that you store the source data. -example.c shows the following code for the case of a full-size 2-D source -array containing 3-byte RGB pixels: - - JSAMPROW row_pointer[1]; /* pointer to a single row */ - int row_stride; /* physical row width in buffer */ - - row_stride = image_width * 3; /* JSAMPLEs per row in image_buffer */ - - while (cinfo.next_scanline < cinfo.image_height) { - row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride]; - jpeg_write_scanlines(&cinfo, row_pointer, 1); - } - -jpeg_write_scanlines() returns the number of scanlines actually written. -This will normally be equal to the number passed in, so you can usually -ignore the return value. It is different in just two cases: - * If you try to write more scanlines than the declared image height, - the additional scanlines are ignored. - * If you use a suspending data destination manager, output buffer overrun - will cause the compressor to return before accepting all the passed lines. - This feature is discussed under "I/O suspension", below. The normal - stdio destination manager will NOT cause this to happen. -In any case, the return value is the same as the change in the value of -next_scanline. - - -6. jpeg_finish_compress(...); - -After all the image data has been written, call jpeg_finish_compress() to -complete the compression cycle. This step is ESSENTIAL to ensure that the -last bufferload of data is written to the data destination. -jpeg_finish_compress() also releases working memory associated with the JPEG -object. - -Typical code: - - jpeg_finish_compress(&cinfo); - -If using the stdio destination manager, don't forget to close the output -stdio stream (if necessary) afterwards. - -If you have requested a multi-pass operating mode, such as Huffman code -optimization, jpeg_finish_compress() will perform the additional passes using -data buffered by the first pass. In this case jpeg_finish_compress() may take -quite a while to complete. With the default compression parameters, this will -not happen. - -It is an error to call jpeg_finish_compress() before writing the necessary -total number of scanlines. If you wish to abort compression, call -jpeg_abort() as discussed below. - -After completing a compression cycle, you may dispose of the JPEG object -as discussed next, or you may use it to compress another image. In that case -return to step 2, 3, or 4 as appropriate. If you do not change the -destination manager, the new datastream will be written to the same target. -If you do not change any JPEG parameters, the new datastream will be written -with the same parameters as before. Note that you can change the input image -dimensions freely between cycles, but if you change the input colorspace, you -should call jpeg_set_defaults() to adjust for the new colorspace; and then -you'll need to repeat all of step 3. - - -7. Release the JPEG compression object. - -When you are done with a JPEG compression object, destroy it by calling -jpeg_destroy_compress(). This will free all subsidiary memory (regardless of -the previous state of the object). Or you can call jpeg_destroy(), which -works for either compression or decompression objects --- this may be more -convenient if you are sharing code between compression and decompression -cases. (Actually, these routines are equivalent except for the declared type -of the passed pointer. To avoid gripes from ANSI C compilers, jpeg_destroy() -should be passed a j_common_ptr.) - -If you allocated the jpeg_compress_struct structure from malloc(), freeing -it is your responsibility --- jpeg_destroy() won't. Ditto for the error -handler structure. - -Typical code: - - jpeg_destroy_compress(&cinfo); - - -8. Aborting. - -If you decide to abort a compression cycle before finishing, you can clean up -in either of two ways: - -* If you don't need the JPEG object any more, just call - jpeg_destroy_compress() or jpeg_destroy() to release memory. This is - legitimate at any point after calling jpeg_create_compress() --- in fact, - it's safe even if jpeg_create_compress() fails. - -* If you want to re-use the JPEG object, call jpeg_abort_compress(), or call - jpeg_abort() which works on both compression and decompression objects. - This will return the object to an idle state, releasing any working memory. - jpeg_abort() is allowed at any time after successful object creation. - -Note that cleaning up the data destination, if required, is your -responsibility; neither of these routines will call term_destination(). -(See "Compressed data handling", below, for more about that.) - -jpeg_destroy() and jpeg_abort() are the only safe calls to make on a JPEG -object that has reported an error by calling error_exit (see "Error handling" -for more info). The internal state of such an object is likely to be out of -whack. Either of these two routines will return the object to a known state. - - -Decompression details ---------------------- - -Here we revisit the JPEG decompression outline given in the overview. - -1. Allocate and initialize a JPEG decompression object. - -This is just like initialization for compression, as discussed above, -except that the object is a "struct jpeg_decompress_struct" and you -call jpeg_create_decompress(). Error handling is exactly the same. - -Typical code: - - struct jpeg_decompress_struct cinfo; - struct jpeg_error_mgr jerr; - ... - cinfo.err = jpeg_std_error(&jerr); - jpeg_create_decompress(&cinfo); - -(Both here and in the IJG code, we usually use variable name "cinfo" for -both compression and decompression objects.) - - -2. Specify the source of the compressed data (eg, a file). - -As previously mentioned, the JPEG library reads compressed data from a "data -source" module. The library includes one data source module which knows how -to read from a stdio stream. You can use your own source module if you want -to do something else, as discussed later. - -If you use the standard source module, you must open the source stdio stream -beforehand. Typical code for this step looks like: - - FILE * infile; - ... - if ((infile = fopen(filename, "rb")) == NULL) { - fprintf(stderr, "can't open %s\n", filename); - exit(1); - } - jpeg_stdio_src(&cinfo, infile); - -where the last line invokes the standard source module. - -WARNING: it is critical that the binary compressed data be read unchanged. -On non-Unix systems the stdio library may perform newline translation or -otherwise corrupt binary data. To suppress this behavior, you may need to use -a "b" option to fopen (as shown above), or use setmode() or another routine to -put the stdio stream in binary mode. See cjpeg.c and djpeg.c for code that -has been found to work on many systems. - -You may not change the data source between calling jpeg_read_header() and -jpeg_finish_decompress(). If you wish to read a series of JPEG images from -a single source file, you should repeat the jpeg_read_header() to -jpeg_finish_decompress() sequence without reinitializing either the JPEG -object or the data source module; this prevents buffered input data from -being discarded. - - -3. Call jpeg_read_header() to obtain image info. - -Typical code for this step is just - - jpeg_read_header(&cinfo, TRUE); - -This will read the source datastream header markers, up to the beginning -of the compressed data proper. On return, the image dimensions and other -info have been stored in the JPEG object. The application may wish to -consult this information before selecting decompression parameters. - -More complex code is necessary if - * A suspending data source is used --- in that case jpeg_read_header() - may return before it has read all the header data. See "I/O suspension", - below. The normal stdio source manager will NOT cause this to happen. - * Abbreviated JPEG files are to be processed --- see the section on - abbreviated datastreams. Standard applications that deal only in - interchange JPEG files need not be concerned with this case either. - -It is permissible to stop at this point if you just wanted to find out the -image dimensions and other header info for a JPEG file. In that case, -call jpeg_destroy() when you are done with the JPEG object, or call -jpeg_abort() to return it to an idle state before selecting a new data -source and reading another header. - - -4. Set parameters for decompression. - -jpeg_read_header() sets appropriate default decompression parameters based on -the properties of the image (in particular, its colorspace). However, you -may well want to alter these defaults before beginning the decompression. -For example, the default is to produce full color output from a color file. -If you want colormapped output you must ask for it. Other options allow the -returned image to be scaled and allow various speed/quality tradeoffs to be -selected. "Decompression parameter selection", below, gives details. - -If the defaults are appropriate, nothing need be done at this step. - -Note that all default values are set by each call to jpeg_read_header(). -If you reuse a decompression object, you cannot expect your parameter -settings to be preserved across cycles, as you can for compression. -You must set desired parameter values each time. - - -5. jpeg_start_decompress(...); - -Once the parameter values are satisfactory, call jpeg_start_decompress() to -begin decompression. This will initialize internal state, allocate working -memory, and prepare for returning data. - -Typical code is just - - jpeg_start_decompress(&cinfo); - -If you have requested a multi-pass operating mode, such as 2-pass color -quantization, jpeg_start_decompress() will do everything needed before data -output can begin. In this case jpeg_start_decompress() may take quite a while -to complete. With a single-scan (non progressive) JPEG file and default -decompression parameters, this will not happen; jpeg_start_decompress() will -return quickly. - -After this call, the final output image dimensions, including any requested -scaling, are available in the JPEG object; so is the selected colormap, if -colormapped output has been requested. Useful fields include - - output_width image width and height, as scaled - output_height - out_color_components # of color components in out_color_space - output_components # of color components returned per pixel - colormap the selected colormap, if any - actual_number_of_colors number of entries in colormap - -output_components is 1 (a colormap index) when quantizing colors; otherwise it -equals out_color_components. It is the number of JSAMPLE values that will be -emitted per pixel in the output arrays. - -Typically you will need to allocate data buffers to hold the incoming image. -You will need output_width * output_components JSAMPLEs per scanline in your -output buffer, and a total of output_height scanlines will be returned. - -Note: if you are using the JPEG library's internal memory manager to allocate -data buffers (as djpeg does), then the manager's protocol requires that you -request large buffers *before* calling jpeg_start_decompress(). This is a -little tricky since the output_XXX fields are not normally valid then. You -can make them valid by calling jpeg_calc_output_dimensions() after setting the -relevant parameters (scaling, output color space, and quantization flag). - - -6. while (scan lines remain to be read) - jpeg_read_scanlines(...); - -Now you can read the decompressed image data by calling jpeg_read_scanlines() -one or more times. At each call, you pass in the maximum number of scanlines -to be read (ie, the height of your working buffer); jpeg_read_scanlines() -will return up to that many lines. The return value is the number of lines -actually read. The format of the returned data is discussed under "Data -formats", above. Don't forget that grayscale and color JPEGs will return -different data formats! - -Image data is returned in top-to-bottom scanline order. If you must write -out the image in bottom-to-top order, you can use the JPEG library's virtual -array mechanism to invert the data efficiently. Examples of this can be -found in the sample application djpeg. - -The library maintains a count of the number of scanlines returned so far -in the output_scanline field of the JPEG object. Usually you can just use -this variable as the loop counter, so that the loop test looks like -"while (cinfo.output_scanline < cinfo.output_height)". (Note that the test -should NOT be against image_height, unless you never use scaling. The -image_height field is the height of the original unscaled image.) -The return value always equals the change in the value of output_scanline. - -If you don't use a suspending data source, it is safe to assume that -jpeg_read_scanlines() reads at least one scanline per call, until the -bottom of the image has been reached. - -If you use a buffer larger than one scanline, it is NOT safe to assume that -jpeg_read_scanlines() fills it. (The current implementation returns only a -few scanlines per call, no matter how large a buffer you pass.) So you must -always provide a loop that calls jpeg_read_scanlines() repeatedly until the -whole image has been read. - - -7. jpeg_finish_decompress(...); - -After all the image data has been read, call jpeg_finish_decompress() to -complete the decompression cycle. This causes working memory associated -with the JPEG object to be released. - -Typical code: - - jpeg_finish_decompress(&cinfo); - -If using the stdio source manager, don't forget to close the source stdio -stream if necessary. - -It is an error to call jpeg_finish_decompress() before reading the correct -total number of scanlines. If you wish to abort decompression, call -jpeg_abort() as discussed below. - -After completing a decompression cycle, you may dispose of the JPEG object as -discussed next, or you may use it to decompress another image. In that case -return to step 2 or 3 as appropriate. If you do not change the source -manager, the next image will be read from the same source. - - -8. Release the JPEG decompression object. - -When you are done with a JPEG decompression object, destroy it by calling -jpeg_destroy_decompress() or jpeg_destroy(). The previous discussion of -destroying compression objects applies here too. - -Typical code: - - jpeg_destroy_decompress(&cinfo); - - -9. Aborting. - -You can abort a decompression cycle by calling jpeg_destroy_decompress() or -jpeg_destroy() if you don't need the JPEG object any more, or -jpeg_abort_decompress() or jpeg_abort() if you want to reuse the object. -The previous discussion of aborting compression cycles applies here too. - - -Mechanics of usage: include files, linking, etc ------------------------------------------------ - -Applications using the JPEG library should include the header file jpeglib.h -to obtain declarations of data types and routines. Before including -jpeglib.h, include system headers that define at least the typedefs FILE and -size_t. On ANSI-conforming systems, including is sufficient; on -older Unix systems, you may need to define size_t. - -If the application needs to refer to individual JPEG library error codes, also -include jerror.h to define those symbols. - -jpeglib.h indirectly includes the files jconfig.h and jmorecfg.h. If you are -installing the JPEG header files in a system directory, you will want to -install all four files: jpeglib.h, jerror.h, jconfig.h, jmorecfg.h. - -The most convenient way to include the JPEG code into your executable program -is to prepare a library file ("libjpeg.a", or a corresponding name on non-Unix -machines) and reference it at your link step. If you use only half of the -library (only compression or only decompression), only that much code will be -included from the library, unless your linker is hopelessly brain-damaged. -The supplied makefiles build libjpeg.a automatically (see install.doc). - -While you can build the JPEG library as a shared library if the whim strikes -you, we don't really recommend it. The trouble with shared libraries is that -at some point you'll probably try to substitute a new version of the library -without recompiling the calling applications. That generally doesn't work -because the parameter struct declarations usually change with each new -version. In other words, the library's API is *not* guaranteed binary -compatible across versions; we only try to ensure source-code compatibility. -(In hindsight, it might have been smarter to hide the parameter structs from -applications and introduce a ton of access functions instead. Too late now, -however.) - -On some systems your application may need to set up a signal handler to ensure -that temporary files are deleted if the program is interrupted. This is most -critical if you are on MS-DOS and use the jmemdos.c memory manager back end; -it will try to grab extended memory for temp files, and that space will NOT be -freed automatically. See cjpeg.c or djpeg.c for an example signal handler. - -It may be worth pointing out that the core JPEG library does not actually -require the stdio library: only the default source/destination managers and -error handler need it. You can use the library in a stdio-less environment -if you replace those modules and use jmemnobs.c (or another memory manager of -your own devising). More info about the minimum system library requirements -may be found in jinclude.h. - - -ADVANCED FEATURES -================= - -Compression parameter selection -------------------------------- - -This section describes all the optional parameters you can set for JPEG -compression, as well as the "helper" routines provided to assist in this -task. Proper setting of some parameters requires detailed understanding -of the JPEG standard; if you don't know what a parameter is for, it's best -not to mess with it! See REFERENCES in the README file for pointers to -more info about JPEG. - -It's a good idea to call jpeg_set_defaults() first, even if you plan to set -all the parameters; that way your code is more likely to work with future JPEG -libraries that have additional parameters. For the same reason, we recommend -you use a helper routine where one is provided, in preference to twiddling -cinfo fields directly. - -The helper routines are: - -jpeg_set_defaults (j_compress_ptr cinfo) - This routine sets all JPEG parameters to reasonable defaults, using - only the input image's color space (field in_color_space, which must - already be set in cinfo). Many applications will only need to use - this routine and perhaps jpeg_set_quality(). - -jpeg_set_colorspace (j_compress_ptr cinfo, J_COLOR_SPACE colorspace) - Sets the JPEG file's colorspace (field jpeg_color_space) as specified, - and sets other color-space-dependent parameters appropriately. See - "Special color spaces", below, before using this. A large number of - parameters, including all per-component parameters, are set by this - routine; if you want to twiddle individual parameters you should call - jpeg_set_colorspace() before rather than after. - -jpeg_default_colorspace (j_compress_ptr cinfo) - Selects an appropriate JPEG colorspace based on cinfo->in_color_space, - and calls jpeg_set_colorspace(). This is actually a subroutine of - jpeg_set_defaults(). It's broken out in case you want to change - just the colorspace-dependent JPEG parameters. - -jpeg_set_quality (j_compress_ptr cinfo, int quality, boolean force_baseline) - Constructs JPEG quantization tables appropriate for the indicated - quality setting. The quality value is expressed on the 0..100 scale - recommended by IJG (cjpeg's "-quality" switch uses this routine). - Note that the exact mapping from quality values to tables may change - in future IJG releases as more is learned about DCT quantization. - If the force_baseline parameter is TRUE, then the quantization table - entries are constrained to the range 1..255 for full JPEG baseline - compatibility. In the current implementation, this only makes a - difference for quality settings below 25, and it effectively prevents - very small/low quality files from being generated. The IJG decoder - is capable of reading the non-baseline files generated at low quality - settings when force_baseline is FALSE, but other decoders may not be. - -jpeg_set_linear_quality (j_compress_ptr cinfo, int scale_factor, - boolean force_baseline) - Same as jpeg_set_quality() except that the generated tables are the - sample tables given in the JPEC spec section K.1, multiplied by the - specified scale factor (which is expressed as a percentage; thus - scale_factor = 100 reproduces the spec's tables). Note that larger - scale factors give lower quality. This entry point is useful for - conforming to the Adobe PostScript DCT conventions, but we do not - recommend linear scaling as a user-visible quality scale otherwise. - force_baseline again constrains the computed table entries to 1..255. - -int jpeg_quality_scaling (int quality) - Converts a value on the IJG-recommended quality scale to a linear - scaling percentage. Note that this routine may change or go away - in future releases --- IJG may choose to adopt a scaling method that - can't be expressed as a simple scalar multiplier, in which case the - premise of this routine collapses. Caveat user. - -jpeg_add_quant_table (j_compress_ptr cinfo, int which_tbl, - const unsigned int *basic_table, - int scale_factor, boolean force_baseline) - Allows an arbitrary quantization table to be created. which_tbl - indicates which table slot to fill. basic_table points to an array - of 64 unsigned ints given in normal array order. These values are - multiplied by scale_factor/100 and then clamped to the range 1..65535 - (or to 1..255 if force_baseline is TRUE). - CAUTION: prior to library version 6a, jpeg_add_quant_table expected - the basic table to be given in JPEG zigzag order. If you need to - write code that works with either older or newer versions of this - routine, you must check the library version number. Something like - "#if JPEG_LIB_VERSION >= 61" is the right test. - -jpeg_simple_progression (j_compress_ptr cinfo) - Generates a default scan script for writing a progressive-JPEG file. - This is the recommended method of creating a progressive file, - unless you want to make a custom scan sequence. You must ensure that - the JPEG color space is set correctly before calling this routine. - - -Compression parameters (cinfo fields) include: - -J_DCT_METHOD dct_method - Selects the algorithm used for the DCT step. Choices are: - JDCT_ISLOW: slow but accurate integer algorithm - JDCT_IFAST: faster, less accurate integer method - JDCT_FLOAT: floating-point method - JDCT_DEFAULT: default method (normally JDCT_ISLOW) - JDCT_FASTEST: fastest method (normally JDCT_IFAST) - The FLOAT method is very slightly more accurate than the ISLOW method, - but may give different results on different machines due to varying - roundoff behavior. The integer methods should give the same results - on all machines. On machines with sufficiently fast FP hardware, the - floating-point method may also be the fastest. The IFAST method is - considerably less accurate than the other two; its use is not - recommended if high quality is a concern. JDCT_DEFAULT and - JDCT_FASTEST are macros configurable by each installation. - -J_COLOR_SPACE jpeg_color_space -int num_components - The JPEG color space and corresponding number of components; see - "Special color spaces", below, for more info. We recommend using - jpeg_set_color_space() if you want to change these. - -boolean optimize_coding - TRUE causes the compressor to compute optimal Huffman coding tables - for the image. This requires an extra pass over the data and - therefore costs a good deal of space and time. The default is - FALSE, which tells the compressor to use the supplied or default - Huffman tables. In most cases optimal tables save only a few percent - of file size compared to the default tables. Note that when this is - TRUE, you need not supply Huffman tables at all, and any you do - supply will be overwritten. - -unsigned int restart_interval -int restart_in_rows - To emit restart markers in the JPEG file, set one of these nonzero. - Set restart_interval to specify the exact interval in MCU blocks. - Set restart_in_rows to specify the interval in MCU rows. (If - restart_in_rows is not 0, then restart_interval is set after the - image width in MCUs is computed.) Defaults are zero (no restarts). - One restart marker per MCU row is often a good choice. - NOTE: the overhead of restart markers is higher in grayscale JPEG - files than in color files, and MUCH higher in progressive JPEGs. - If you use restarts, you may want to use larger intervals in those - cases. - -const jpeg_scan_info * scan_info -int num_scans - By default, scan_info is NULL; this causes the compressor to write a - single-scan sequential JPEG file. If not NULL, scan_info points to - an array of scan definition records of length num_scans. The - compressor will then write a JPEG file having one scan for each scan - definition record. This is used to generate noninterleaved or - progressive JPEG files. The library checks that the scan array - defines a valid JPEG scan sequence. (jpeg_simple_progression creates - a suitable scan definition array for progressive JPEG.) This is - discussed further under "Progressive JPEG support". - -int smoothing_factor - If non-zero, the input image is smoothed; the value should be 1 for - minimal smoothing to 100 for maximum smoothing. Consult jcsample.c - for details of the smoothing algorithm. The default is zero. - -boolean write_JFIF_header - If TRUE, a JFIF APP0 marker is emitted. jpeg_set_defaults() and - jpeg_set_colorspace() set this TRUE if a JFIF-legal JPEG color space - (ie, YCbCr or grayscale) is selected, otherwise FALSE. - -UINT8 JFIF_major_version -UINT8 JFIF_minor_version - The version number to be written into the JFIF marker. - jpeg_set_defaults() initializes the version to 1.01 (major=minor=1). - You should set it to 1.02 (major=1, minor=2) if you plan to write - any JFIF 1.02 extension markers. - -UINT8 density_unit -UINT16 X_density -UINT16 Y_density - The resolution information to be written into the JFIF marker; - not used otherwise. density_unit may be 0 for unknown, - 1 for dots/inch, or 2 for dots/cm. The default values are 0,1,1 - indicating square pixels of unknown size. - -boolean write_Adobe_marker - If TRUE, an Adobe APP14 marker is emitted. jpeg_set_defaults() and - jpeg_set_colorspace() set this TRUE if JPEG color space RGB, CMYK, - or YCCK is selected, otherwise FALSE. It is generally a bad idea - to set both write_JFIF_header and write_Adobe_marker. In fact, - you probably shouldn't change the default settings at all --- the - default behavior ensures that the JPEG file's color space can be - recognized by the decoder. - -JQUANT_TBL * quant_tbl_ptrs[NUM_QUANT_TBLS] - Pointers to coefficient quantization tables, one per table slot, - or NULL if no table is defined for a slot. Usually these should - be set via one of the above helper routines; jpeg_add_quant_table() - is general enough to define any quantization table. The other - routines will set up table slot 0 for luminance quality and table - slot 1 for chrominance. - -JHUFF_TBL * dc_huff_tbl_ptrs[NUM_HUFF_TBLS] -JHUFF_TBL * ac_huff_tbl_ptrs[NUM_HUFF_TBLS] - Pointers to Huffman coding tables, one per table slot, or NULL if - no table is defined for a slot. Slots 0 and 1 are filled with the - JPEG sample tables by jpeg_set_defaults(). If you need to allocate - more table structures, jpeg_alloc_huff_table() may be used. - Note that optimal Huffman tables can be computed for an image - by setting optimize_coding, as discussed above; there's seldom - any need to mess with providing your own Huffman tables. - -There are some additional cinfo fields which are not documented here -because you currently can't change them; for example, you can't set -arith_code TRUE because arithmetic coding is unsupported. - - -Per-component parameters are stored in the struct cinfo.comp_info[i] for -component number i. Note that components here refer to components of the -JPEG color space, *not* the source image color space. A suitably large -comp_info[] array is allocated by jpeg_set_defaults(); if you choose not -to use that routine, it's up to you to allocate the array. - -int component_id - The one-byte identifier code to be recorded in the JPEG file for - this component. For the standard color spaces, we recommend you - leave the default values alone. - -int h_samp_factor -int v_samp_factor - Horizontal and vertical sampling factors for the component; must - be 1..4 according to the JPEG standard. Note that larger sampling - factors indicate a higher-resolution component; many people find - this behavior quite unintuitive. The default values are 2,2 for - luminance components and 1,1 for chrominance components, except - for grayscale where 1,1 is used. - -int quant_tbl_no - Quantization table number for component. The default value is - 0 for luminance components and 1 for chrominance components. - -int dc_tbl_no -int ac_tbl_no - DC and AC entropy coding table numbers. The default values are - 0 for luminance components and 1 for chrominance components. - -int component_index - Must equal the component's index in comp_info[]. (Beginning in - release v6, the compressor library will fill this in automatically; - you don't have to.) - - -Decompression parameter selection ---------------------------------- - -Decompression parameter selection is somewhat simpler than compression -parameter selection, since all of the JPEG internal parameters are -recorded in the source file and need not be supplied by the application. -(Unless you are working with abbreviated files, in which case see -"Abbreviated datastreams", below.) Decompression parameters control -the postprocessing done on the image to deliver it in a format suitable -for the application's use. Many of the parameters control speed/quality -tradeoffs, in which faster decompression may be obtained at the price of -a poorer-quality image. The defaults select the highest quality (slowest) -processing. - -The following fields in the JPEG object are set by jpeg_read_header() and -may be useful to the application in choosing decompression parameters: - -JDIMENSION image_width Width and height of image -JDIMENSION image_height -int num_components Number of color components -J_COLOR_SPACE jpeg_color_space Colorspace of image -boolean saw_JFIF_marker TRUE if a JFIF APP0 marker was seen - UINT8 JFIF_major_version Version information from JFIF marker - UINT8 JFIF_minor_version - UINT8 density_unit Resolution data from JFIF marker - UINT16 X_density - UINT16 Y_density -boolean saw_Adobe_marker TRUE if an Adobe APP14 marker was seen - UINT8 Adobe_transform Color transform code from Adobe marker - -The JPEG color space, unfortunately, is something of a guess since the JPEG -standard proper does not provide a way to record it. In practice most files -adhere to the JFIF or Adobe conventions, and the decoder will recognize these -correctly. See "Special color spaces", below, for more info. - - -The decompression parameters that determine the basic properties of the -returned image are: - -J_COLOR_SPACE out_color_space - Output color space. jpeg_read_header() sets an appropriate default - based on jpeg_color_space; typically it will be RGB or grayscale. - The application can change this field to request output in a different - colorspace. For example, set it to JCS_GRAYSCALE to get grayscale - output from a color file. (This is useful for previewing: grayscale - output is faster than full color since the color components need not - be processed.) Note that not all possible color space transforms are - currently implemented; you may need to extend jdcolor.c if you want an - unusual conversion. - -unsigned int scale_num, scale_denom - Scale the image by the fraction scale_num/scale_denom. Default is - 1/1, or no scaling. Currently, the only supported scaling ratios - are 1/1, 1/2, 1/4, and 1/8. (The library design allows for arbitrary - scaling ratios but this is not likely to be implemented any time soon.) - Smaller scaling ratios permit significantly faster decoding since - fewer pixels need be processed and a simpler IDCT method can be used. - -boolean quantize_colors - If set TRUE, colormapped output will be delivered. Default is FALSE, - meaning that full-color output will be delivered. - -The next three parameters are relevant only if quantize_colors is TRUE. - -int desired_number_of_colors - Maximum number of colors to use in generating a library-supplied color - map (the actual number of colors is returned in a different field). - Default 256. Ignored when the application supplies its own color map. - -boolean two_pass_quantize - If TRUE, an extra pass over the image is made to select a custom color - map for the image. This usually looks a lot better than the one-size- - fits-all colormap that is used otherwise. Default is TRUE. Ignored - when the application supplies its own color map. - -J_DITHER_MODE dither_mode - Selects color dithering method. Supported values are: - JDITHER_NONE no dithering: fast, very low quality - JDITHER_ORDERED ordered dither: moderate speed and quality - JDITHER_FS Floyd-Steinberg dither: slow, high quality - Default is JDITHER_FS. (At present, ordered dither is implemented - only in the single-pass, standard-colormap case. If you ask for - ordered dither when two_pass_quantize is TRUE or when you supply - an external color map, you'll get F-S dithering.) - -When quantize_colors is TRUE, the target color map is described by the next -two fields. colormap is set to NULL by jpeg_read_header(). The application -can supply a color map by setting colormap non-NULL and setting -actual_number_of_colors to the map size. Otherwise, jpeg_start_decompress() -selects a suitable color map and sets these two fields itself. -[Implementation restriction: at present, an externally supplied colormap is -only accepted for 3-component output color spaces.] - -JSAMPARRAY colormap - The color map, represented as a 2-D pixel array of out_color_components - rows and actual_number_of_colors columns. Ignored if not quantizing. - CAUTION: if the JPEG library creates its own colormap, the storage - pointed to by this field is released by jpeg_finish_decompress(). - Copy the colormap somewhere else first, if you want to save it. - -int actual_number_of_colors - The number of colors in the color map. - -Additional decompression parameters that the application may set include: - -J_DCT_METHOD dct_method - Selects the algorithm used for the DCT step. Choices are the same - as described above for compression. - -boolean do_fancy_upsampling - If TRUE, do careful upsampling of chroma components. If FALSE, - a faster but sloppier method is used. Default is TRUE. The visual - impact of the sloppier method is often very small. - -boolean do_block_smoothing - If TRUE, interblock smoothing is applied in early stages of decoding - progressive JPEG files; if FALSE, not. Default is TRUE. Early - progression stages look "fuzzy" with smoothing, "blocky" without. - In any case, block smoothing ceases to be applied after the first few - AC coefficients are known to full accuracy, so it is relevant only - when using buffered-image mode for progressive images. - -boolean enable_1pass_quant -boolean enable_external_quant -boolean enable_2pass_quant - These are significant only in buffered-image mode, which is - described in its own section below. - - -The output image dimensions are given by the following fields. These are -computed from the source image dimensions and the decompression parameters -by jpeg_start_decompress(). You can also call jpeg_calc_output_dimensions() -to obtain the values that will result from the current parameter settings. -This can be useful if you are trying to pick a scaling ratio that will get -close to a desired target size. It's also important if you are using the -JPEG library's memory manager to allocate output buffer space, because you -are supposed to request such buffers *before* jpeg_start_decompress(). - -JDIMENSION output_width Actual dimensions of output image. -JDIMENSION output_height -int out_color_components Number of color components in out_color_space. -int output_components Number of color components returned. -int rec_outbuf_height Recommended height of scanline buffer. - -When quantizing colors, output_components is 1, indicating a single color map -index per pixel. Otherwise it equals out_color_components. The output arrays -are required to be output_width * output_components JSAMPLEs wide. - -rec_outbuf_height is the recommended minimum height (in scanlines) of the -buffer passed to jpeg_read_scanlines(). If the buffer is smaller, the -library will still work, but time will be wasted due to unnecessary data -copying. In high-quality modes, rec_outbuf_height is always 1, but some -faster, lower-quality modes set it to larger values (typically 2 to 4). -If you are going to ask for a high-speed processing mode, you may as well -go to the trouble of honoring rec_outbuf_height so as to avoid data copying. -(An output buffer larger than rec_outbuf_height lines is OK, but won't -provide any material speed improvement over that height.) - - -Special color spaces --------------------- - -The JPEG standard itself is "color blind" and doesn't specify any particular -color space. It is customary to convert color data to a luminance/chrominance -color space before compressing, since this permits greater compression. The -existing de-facto JPEG file format standards specify YCbCr or grayscale data -(JFIF), or grayscale, RGB, YCbCr, CMYK, or YCCK (Adobe). For special -applications such as multispectral images, other color spaces can be used, -but it must be understood that such files will be unportable. - -The JPEG library can handle the most common colorspace conversions (namely -RGB <=> YCbCr and CMYK <=> YCCK). It can also deal with data of an unknown -color space, passing it through without conversion. If you deal extensively -with an unusual color space, you can easily extend the library to understand -additional color spaces and perform appropriate conversions. - -For compression, the source data's color space is specified by field -in_color_space. This is transformed to the JPEG file's color space given -by jpeg_color_space. jpeg_set_defaults() chooses a reasonable JPEG color -space depending on in_color_space, but you can override this by calling -jpeg_set_colorspace(). Of course you must select a supported transformation. -jccolor.c currently supports the following transformations: - RGB => YCbCr - RGB => GRAYSCALE - YCbCr => GRAYSCALE - CMYK => YCCK -plus the null transforms: GRAYSCALE => GRAYSCALE, RGB => RGB, -YCbCr => YCbCr, CMYK => CMYK, YCCK => YCCK, and UNKNOWN => UNKNOWN. - -The de-facto file format standards (JFIF and Adobe) specify APPn markers that -indicate the color space of the JPEG file. It is important to ensure that -these are written correctly, or omitted if the JPEG file's color space is not -one of the ones supported by the de-facto standards. jpeg_set_colorspace() -will set the compression parameters to include or omit the APPn markers -properly, so long as it is told the truth about the JPEG color space. -For example, if you are writing some random 3-component color space without -conversion, don't try to fake out the library by setting in_color_space and -jpeg_color_space to JCS_YCbCr; use JCS_UNKNOWN. You may want to write an -APPn marker of your own devising to identify the colorspace --- see "Special -markers", below. - -When told that the color space is UNKNOWN, the library will default to using -luminance-quality compression parameters for all color components. You may -well want to change these parameters. See the source code for -jpeg_set_colorspace(), in jcparam.c, for details. - -For decompression, the JPEG file's color space is given in jpeg_color_space, -and this is transformed to the output color space out_color_space. -jpeg_read_header's setting of jpeg_color_space can be relied on if the file -conforms to JFIF or Adobe conventions, but otherwise it is no better than a -guess. If you know the JPEG file's color space for certain, you can override -jpeg_read_header's guess by setting jpeg_color_space. jpeg_read_header also -selects a default output color space based on (its guess of) jpeg_color_space; -set out_color_space to override this. Again, you must select a supported -transformation. jdcolor.c currently supports - YCbCr => GRAYSCALE - YCbCr => RGB - GRAYSCALE => RGB - YCCK => CMYK -as well as the null transforms. (Since GRAYSCALE=>RGB is provided, an -application can force grayscale JPEGs to look like color JPEGs if it only -wants to handle one case.) - -The two-pass color quantizer, jquant2.c, is specialized to handle RGB data -(it weights distances appropriately for RGB colors). You'll need to modify -the code if you want to use it for non-RGB output color spaces. Note that -jquant2.c is used to map to an application-supplied colormap as well as for -the normal two-pass colormap selection process. - -CAUTION: it appears that Adobe Photoshop writes inverted data in CMYK JPEG -files: 0 represents 100% ink coverage, rather than 0% ink as you'd expect. -This is arguably a bug in Photoshop, but if you need to work with Photoshop -CMYK files, you will have to deal with it in your application. We cannot -"fix" this in the library by inverting the data during the CMYK<=>YCCK -transform, because that would break other applications, notably Ghostscript. -Photoshop versions prior to 3.0 write EPS files containing JPEG-encoded CMYK -data in the same inverted-YCCK representation used in bare JPEG files, but -the surrounding PostScript code performs an inversion using the PS image -operator. I am told that Photoshop 3.0 will write uninverted YCCK in -EPS/JPEG files, and will omit the PS-level inversion. (But the data -polarity used in bare JPEG files will not change in 3.0.) In either case, -the JPEG library must not invert the data itself, or else Ghostscript would -read these EPS files incorrectly. - - -Error handling --------------- - -When the default error handler is used, any error detected inside the JPEG -routines will cause a message to be printed on stderr, followed by exit(). -You can supply your own error handling routines to override this behavior -and to control the treatment of nonfatal warnings and trace/debug messages. -The file example.c illustrates the most common case, which is to have the -application regain control after an error rather than exiting. - -The JPEG library never writes any message directly; it always goes through -the error handling routines. Three classes of messages are recognized: - * Fatal errors: the library cannot continue. - * Warnings: the library can continue, but the data is corrupt, and a - damaged output image is likely to result. - * Trace/informational messages. These come with a trace level indicating - the importance of the message; you can control the verbosity of the - program by adjusting the maximum trace level that will be displayed. - -You may, if you wish, simply replace the entire JPEG error handling module -(jerror.c) with your own code. However, you can avoid code duplication by -only replacing some of the routines depending on the behavior you need. -This is accomplished by calling jpeg_std_error() as usual, but then overriding -some of the method pointers in the jpeg_error_mgr struct, as illustrated by -example.c. - -All of the error handling routines will receive a pointer to the JPEG object -(a j_common_ptr which points to either a jpeg_compress_struct or a -jpeg_decompress_struct; if you need to tell which, test the is_decompressor -field). This struct includes a pointer to the error manager struct in its -"err" field. Frequently, custom error handler routines will need to access -additional data which is not known to the JPEG library or the standard error -handler. The most convenient way to do this is to embed either the JPEG -object or the jpeg_error_mgr struct in a larger structure that contains -additional fields; then casting the passed pointer provides access to the -additional fields. Again, see example.c for one way to do it. (Beginning -with IJG version 6b, there is also a void pointer "client_data" in each -JPEG object, which the application can also use to find related data. -The library does not touch client_data at all.) - -The individual methods that you might wish to override are: - -error_exit (j_common_ptr cinfo) - Receives control for a fatal error. Information sufficient to - generate the error message has been stored in cinfo->err; call - output_message to display it. Control must NOT return to the caller; - generally this routine will exit() or longjmp() somewhere. - Typically you would override this routine to get rid of the exit() - default behavior. Note that if you continue processing, you should - clean up the JPEG object with jpeg_abort() or jpeg_destroy(). - -output_message (j_common_ptr cinfo) - Actual output of any JPEG message. Override this to send messages - somewhere other than stderr. Note that this method does not know - how to generate a message, only where to send it. - -format_message (j_common_ptr cinfo, char * buffer) - Constructs a readable error message string based on the error info - stored in cinfo->err. This method is called by output_message. Few - applications should need to override this method. One possible - reason for doing so is to implement dynamic switching of error message - language. - -emit_message (j_common_ptr cinfo, int msg_level) - Decide whether or not to emit a warning or trace message; if so, - calls output_message. The main reason for overriding this method - would be to abort on warnings. msg_level is -1 for warnings, - 0 and up for trace messages. - -Only error_exit() and emit_message() are called from the rest of the JPEG -library; the other two are internal to the error handler. - -The actual message texts are stored in an array of strings which is pointed to -by the field err->jpeg_message_table. The messages are numbered from 0 to -err->last_jpeg_message, and it is these code numbers that are used in the -JPEG library code. You could replace the message texts (for instance, with -messages in French or German) by changing the message table pointer. See -jerror.h for the default texts. CAUTION: this table will almost certainly -change or grow from one library version to the next. - -It may be useful for an application to add its own message texts that are -handled by the same mechanism. The error handler supports a second "add-on" -message table for this purpose. To define an addon table, set the pointer -err->addon_message_table and the message numbers err->first_addon_message and -err->last_addon_message. If you number the addon messages beginning at 1000 -or so, you won't have to worry about conflicts with the library's built-in -messages. See the sample applications cjpeg/djpeg for an example of using -addon messages (the addon messages are defined in cderror.h). - -Actual invocation of the error handler is done via macros defined in jerror.h: - ERREXITn(...) for fatal errors - WARNMSn(...) for corrupt-data warnings - TRACEMSn(...) for trace and informational messages. -These macros store the message code and any additional parameters into the -error handler struct, then invoke the error_exit() or emit_message() method. -The variants of each macro are for varying numbers of additional parameters. -The additional parameters are inserted into the generated message using -standard printf() format codes. - -See jerror.h and jerror.c for further details. - - -Compressed data handling (source and destination managers) ----------------------------------------------------------- - -The JPEG compression library sends its compressed data to a "destination -manager" module. The default destination manager just writes the data to a -stdio stream, but you can provide your own manager to do something else. -Similarly, the decompression library calls a "source manager" to obtain the -compressed data; you can provide your own source manager if you want the data -to come from somewhere other than a stdio stream. - -In both cases, compressed data is processed a bufferload at a time: the -destination or source manager provides a work buffer, and the library invokes -the manager only when the buffer is filled or emptied. (You could define a -one-character buffer to force the manager to be invoked for each byte, but -that would be rather inefficient.) The buffer's size and location are -controlled by the manager, not by the library. For example, if you desired to -decompress a JPEG datastream that was all in memory, you could just make the -buffer pointer and length point to the original data in memory. Then the -buffer-reload procedure would be invoked only if the decompressor ran off the -end of the datastream, which would indicate an erroneous datastream. - -The work buffer is defined as an array of datatype JOCTET, which is generally -"char" or "unsigned char". On a machine where char is not exactly 8 bits -wide, you must define JOCTET as a wider data type and then modify the data -source and destination modules to transcribe the work arrays into 8-bit units -on external storage. - -A data destination manager struct contains a pointer and count defining the -next byte to write in the work buffer and the remaining free space: - - JOCTET * next_output_byte; /* => next byte to write in buffer */ - size_t free_in_buffer; /* # of byte spaces remaining in buffer */ - -The library increments the pointer and decrements the count until the buffer -is filled. The manager's empty_output_buffer method must reset the pointer -and count. The manager is expected to remember the buffer's starting address -and total size in private fields not visible to the library. - -A data destination manager provides three methods: - -init_destination (j_compress_ptr cinfo) - Initialize destination. This is called by jpeg_start_compress() - before any data is actually written. It must initialize - next_output_byte and free_in_buffer. free_in_buffer must be - initialized to a positive value. - -empty_output_buffer (j_compress_ptr cinfo) - This is called whenever the buffer has filled (free_in_buffer - reaches zero). In typical applications, it should write out the - *entire* buffer (use the saved start address and buffer length; - ignore the current state of next_output_byte and free_in_buffer). - Then reset the pointer & count to the start of the buffer, and - return TRUE indicating that the buffer has been dumped. - free_in_buffer must be set to a positive value when TRUE is - returned. A FALSE return should only be used when I/O suspension is - desired (this operating mode is discussed in the next section). - -term_destination (j_compress_ptr cinfo) - Terminate destination --- called by jpeg_finish_compress() after all - data has been written. In most applications, this must flush any - data remaining in the buffer. Use either next_output_byte or - free_in_buffer to determine how much data is in the buffer. - -term_destination() is NOT called by jpeg_abort() or jpeg_destroy(). If you -want the destination manager to be cleaned up during an abort, you must do it -yourself. - -You will also need code to create a jpeg_destination_mgr struct, fill in its -method pointers, and insert a pointer to the struct into the "dest" field of -the JPEG compression object. This can be done in-line in your setup code if -you like, but it's probably cleaner to provide a separate routine similar to -the jpeg_stdio_dest() routine of the supplied destination manager. - -Decompression source managers follow a parallel design, but with some -additional frammishes. The source manager struct contains a pointer and count -defining the next byte to read from the work buffer and the number of bytes -remaining: - - const JOCTET * next_input_byte; /* => next byte to read from buffer */ - size_t bytes_in_buffer; /* # of bytes remaining in buffer */ - -The library increments the pointer and decrements the count until the buffer -is emptied. The manager's fill_input_buffer method must reset the pointer and -count. In most applications, the manager must remember the buffer's starting -address and total size in private fields not visible to the library. - -A data source manager provides five methods: - -init_source (j_decompress_ptr cinfo) - Initialize source. This is called by jpeg_read_header() before any - data is actually read. Unlike init_destination(), it may leave - bytes_in_buffer set to 0 (in which case a fill_input_buffer() call - will occur immediately). - -fill_input_buffer (j_decompress_ptr cinfo) - This is called whenever bytes_in_buffer has reached zero and more - data is wanted. In typical applications, it should read fresh data - into the buffer (ignoring the current state of next_input_byte and - bytes_in_buffer), reset the pointer & count to the start of the - buffer, and return TRUE indicating that the buffer has been reloaded. - It is not necessary to fill the buffer entirely, only to obtain at - least one more byte. bytes_in_buffer MUST be set to a positive value - if TRUE is returned. A FALSE return should only be used when I/O - suspension is desired (this mode is discussed in the next section). - -skip_input_data (j_decompress_ptr cinfo, long num_bytes) - Skip num_bytes worth of data. The buffer pointer and count should - be advanced over num_bytes input bytes, refilling the buffer as - needed. This is used to skip over a potentially large amount of - uninteresting data (such as an APPn marker). In some applications - it may be possible to optimize away the reading of the skipped data, - but it's not clear that being smart is worth much trouble; large - skips are uncommon. bytes_in_buffer may be zero on return. - A zero or negative skip count should be treated as a no-op. - -resync_to_restart (j_decompress_ptr cinfo, int desired) - This routine is called only when the decompressor has failed to find - a restart (RSTn) marker where one is expected. Its mission is to - find a suitable point for resuming decompression. For most - applications, we recommend that you just use the default resync - procedure, jpeg_resync_to_restart(). However, if you are able to back - up in the input data stream, or if you have a-priori knowledge about - the likely location of restart markers, you may be able to do better. - Read the read_restart_marker() and jpeg_resync_to_restart() routines - in jdmarker.c if you think you'd like to implement your own resync - procedure. - -term_source (j_decompress_ptr cinfo) - Terminate source --- called by jpeg_finish_decompress() after all - data has been read. Often a no-op. - -For both fill_input_buffer() and skip_input_data(), there is no such thing -as an EOF return. If the end of the file has been reached, the routine has -a choice of exiting via ERREXIT() or inserting fake data into the buffer. -In most cases, generating a warning message and inserting a fake EOI marker -is the best course of action --- this will allow the decompressor to output -however much of the image is there. In pathological cases, the decompressor -may swallow the EOI and again demand data ... just keep feeding it fake EOIs. -jdatasrc.c illustrates the recommended error recovery behavior. - -term_source() is NOT called by jpeg_abort() or jpeg_destroy(). If you want -the source manager to be cleaned up during an abort, you must do it yourself. - -You will also need code to create a jpeg_source_mgr struct, fill in its method -pointers, and insert a pointer to the struct into the "src" field of the JPEG -decompression object. This can be done in-line in your setup code if you -like, but it's probably cleaner to provide a separate routine similar to the -jpeg_stdio_src() routine of the supplied source manager. - -For more information, consult the stdio source and destination managers -in jdatasrc.c and jdatadst.c. - - -I/O suspension --------------- - -Some applications need to use the JPEG library as an incremental memory-to- -memory filter: when the compressed data buffer is filled or emptied, they want -control to return to the outer loop, rather than expecting that the buffer can -be emptied or reloaded within the data source/destination manager subroutine. -The library supports this need by providing an "I/O suspension" mode, which we -describe in this section. - -The I/O suspension mode is not a panacea: nothing is guaranteed about the -maximum amount of time spent in any one call to the library, so it will not -eliminate response-time problems in single-threaded applications. If you -need guaranteed response time, we suggest you "bite the bullet" and implement -a real multi-tasking capability. - -To use I/O suspension, cooperation is needed between the calling application -and the data source or destination manager; you will always need a custom -source/destination manager. (Please read the previous section if you haven't -already.) The basic idea is that the empty_output_buffer() or -fill_input_buffer() routine is a no-op, merely returning FALSE to indicate -that it has done nothing. Upon seeing this, the JPEG library suspends -operation and returns to its caller. The surrounding application is -responsible for emptying or refilling the work buffer before calling the -JPEG library again. - -Compression suspension: - -For compression suspension, use an empty_output_buffer() routine that returns -FALSE; typically it will not do anything else. This will cause the -compressor to return to the caller of jpeg_write_scanlines(), with the return -value indicating that not all the supplied scanlines have been accepted. -The application must make more room in the output buffer, adjust the output -buffer pointer/count appropriately, and then call jpeg_write_scanlines() -again, pointing to the first unconsumed scanline. - -When forced to suspend, the compressor will backtrack to a convenient stopping -point (usually the start of the current MCU); it will regenerate some output -data when restarted. Therefore, although empty_output_buffer() is only -called when the buffer is filled, you should NOT write out the entire buffer -after a suspension. Write only the data up to the current position of -next_output_byte/free_in_buffer. The data beyond that point will be -regenerated after resumption. - -Because of the backtracking behavior, a good-size output buffer is essential -for efficiency; you don't want the compressor to suspend often. (In fact, an -overly small buffer could lead to infinite looping, if a single MCU required -more data than would fit in the buffer.) We recommend a buffer of at least -several Kbytes. You may want to insert explicit code to ensure that you don't -call jpeg_write_scanlines() unless there is a reasonable amount of space in -the output buffer; in other words, flush the buffer before trying to compress -more data. - -The compressor does not allow suspension while it is trying to write JPEG -markers at the beginning and end of the file. This means that: - * At the beginning of a compression operation, there must be enough free - space in the output buffer to hold the header markers (typically 600 or - so bytes). The recommended buffer size is bigger than this anyway, so - this is not a problem as long as you start with an empty buffer. However, - this restriction might catch you if you insert large special markers, such - as a JFIF thumbnail image, without flushing the buffer afterwards. - * When you call jpeg_finish_compress(), there must be enough space in the - output buffer to emit any buffered data and the final EOI marker. In the - current implementation, half a dozen bytes should suffice for this, but - for safety's sake we recommend ensuring that at least 100 bytes are free - before calling jpeg_finish_compress(). - -A more significant restriction is that jpeg_finish_compress() cannot suspend. -This means you cannot use suspension with multi-pass operating modes, namely -Huffman code optimization and multiple-scan output. Those modes write the -whole file during jpeg_finish_compress(), which will certainly result in -buffer overrun. (Note that this restriction applies only to compression, -not decompression. The decompressor supports input suspension in all of its -operating modes.) - -Decompression suspension: - -For decompression suspension, use a fill_input_buffer() routine that simply -returns FALSE (except perhaps during error recovery, as discussed below). -This will cause the decompressor to return to its caller with an indication -that suspension has occurred. This can happen at four places: - * jpeg_read_header(): will return JPEG_SUSPENDED. - * jpeg_start_decompress(): will return FALSE, rather than its usual TRUE. - * jpeg_read_scanlines(): will return the number of scanlines already - completed (possibly 0). - * jpeg_finish_decompress(): will return FALSE, rather than its usual TRUE. -The surrounding application must recognize these cases, load more data into -the input buffer, and repeat the call. In the case of jpeg_read_scanlines(), -increment the passed pointers past any scanlines successfully read. - -Just as with compression, the decompressor will typically backtrack to a -convenient restart point before suspending. When fill_input_buffer() is -called, next_input_byte/bytes_in_buffer point to the current restart point, -which is where the decompressor will backtrack to if FALSE is returned. -The data beyond that position must NOT be discarded if you suspend; it needs -to be re-read upon resumption. In most implementations, you'll need to shift -this data down to the start of your work buffer and then load more data after -it. Again, this behavior means that a several-Kbyte work buffer is essential -for decent performance; furthermore, you should load a reasonable amount of -new data before resuming decompression. (If you loaded, say, only one new -byte each time around, you could waste a LOT of cycles.) - -The skip_input_data() source manager routine requires special care in a -suspension scenario. This routine is NOT granted the ability to suspend the -decompressor; it can decrement bytes_in_buffer to zero, but no more. If the -requested skip distance exceeds the amount of data currently in the input -buffer, then skip_input_data() must set bytes_in_buffer to zero and record the -additional skip distance somewhere else. The decompressor will immediately -call fill_input_buffer(), which should return FALSE, which will cause a -suspension return. The surrounding application must then arrange to discard -the recorded number of bytes before it resumes loading the input buffer. -(Yes, this design is rather baroque, but it avoids complexity in the far more -common case where a non-suspending source manager is used.) - -If the input data has been exhausted, we recommend that you emit a warning -and insert dummy EOI markers just as a non-suspending data source manager -would do. This can be handled either in the surrounding application logic or -within fill_input_buffer(); the latter is probably more efficient. If -fill_input_buffer() knows that no more data is available, it can set the -pointer/count to point to a dummy EOI marker and then return TRUE just as -though it had read more data in a non-suspending situation. - -The decompressor does not attempt to suspend within standard JPEG markers; -instead it will backtrack to the start of the marker and reprocess the whole -marker next time. Hence the input buffer must be large enough to hold the -longest standard marker in the file. Standard JPEG markers should normally -not exceed a few hundred bytes each (DHT tables are typically the longest). -We recommend at least a 2K buffer for performance reasons, which is much -larger than any correct marker is likely to be. For robustness against -damaged marker length counts, you may wish to insert a test in your -application for the case that the input buffer is completely full and yet -the decoder has suspended without consuming any data --- otherwise, if this -situation did occur, it would lead to an endless loop. (The library can't -provide this test since it has no idea whether "the buffer is full", or -even whether there is a fixed-size input buffer.) - -The input buffer would need to be 64K to allow for arbitrary COM or APPn -markers, but these are handled specially: they are either saved into allocated -memory, or skipped over by calling skip_input_data(). In the former case, -suspension is handled correctly, and in the latter case, the problem of -buffer overrun is placed on skip_input_data's shoulders, as explained above. -Note that if you provide your own marker handling routine for large markers, -you should consider how to deal with buffer overflow. - -Multiple-buffer management: - -In some applications it is desirable to store the compressed data in a linked -list of buffer areas, so as to avoid data copying. This can be handled by -having empty_output_buffer() or fill_input_buffer() set the pointer and count -to reference the next available buffer; FALSE is returned only if no more -buffers are available. Although seemingly straightforward, there is a -pitfall in this approach: the backtrack that occurs when FALSE is returned -could back up into an earlier buffer. For example, when fill_input_buffer() -is called, the current pointer & count indicate the backtrack restart point. -Since fill_input_buffer() will set the pointer and count to refer to a new -buffer, the restart position must be saved somewhere else. Suppose a second -call to fill_input_buffer() occurs in the same library call, and no -additional input data is available, so fill_input_buffer must return FALSE. -If the JPEG library has not moved the pointer/count forward in the current -buffer, then *the correct restart point is the saved position in the prior -buffer*. Prior buffers may be discarded only after the library establishes -a restart point within a later buffer. Similar remarks apply for output into -a chain of buffers. - -The library will never attempt to backtrack over a skip_input_data() call, -so any skipped data can be permanently discarded. You still have to deal -with the case of skipping not-yet-received data, however. - -It's much simpler to use only a single buffer; when fill_input_buffer() is -called, move any unconsumed data (beyond the current pointer/count) down to -the beginning of this buffer and then load new data into the remaining buffer -space. This approach requires a little more data copying but is far easier -to get right. - - -Progressive JPEG support ------------------------- - -Progressive JPEG rearranges the stored data into a series of scans of -increasing quality. In situations where a JPEG file is transmitted across a -slow communications link, a decoder can generate a low-quality image very -quickly from the first scan, then gradually improve the displayed quality as -more scans are received. The final image after all scans are complete is -identical to that of a regular (sequential) JPEG file of the same quality -setting. Progressive JPEG files are often slightly smaller than equivalent -sequential JPEG files, but the possibility of incremental display is the main -reason for using progressive JPEG. - -The IJG encoder library generates progressive JPEG files when given a -suitable "scan script" defining how to divide the data into scans. -Creation of progressive JPEG files is otherwise transparent to the encoder. -Progressive JPEG files can also be read transparently by the decoder library. -If the decoding application simply uses the library as defined above, it -will receive a final decoded image without any indication that the file was -progressive. Of course, this approach does not allow incremental display. -To perform incremental display, an application needs to use the decoder -library's "buffered-image" mode, in which it receives a decoded image -multiple times. - -Each displayed scan requires about as much work to decode as a full JPEG -image of the same size, so the decoder must be fairly fast in relation to the -data transmission rate in order to make incremental display useful. However, -it is possible to skip displaying the image and simply add the incoming bits -to the decoder's coefficient buffer. This is fast because only Huffman -decoding need be done, not IDCT, upsampling, colorspace conversion, etc. -The IJG decoder library allows the application to switch dynamically between -displaying the image and simply absorbing the incoming bits. A properly -coded application can automatically adapt the number of display passes to -suit the time available as the image is received. Also, a final -higher-quality display cycle can be performed from the buffered data after -the end of the file is reached. - -Progressive compression: - -To create a progressive JPEG file (or a multiple-scan sequential JPEG file), -set the scan_info cinfo field to point to an array of scan descriptors, and -perform compression as usual. Instead of constructing your own scan list, -you can call the jpeg_simple_progression() helper routine to create a -recommended progression sequence; this method should be used by all -applications that don't want to get involved in the nitty-gritty of -progressive scan sequence design. (If you want to provide user control of -scan sequences, you may wish to borrow the scan script reading code found -in rdswitch.c, so that you can read scan script files just like cjpeg's.) -When scan_info is not NULL, the compression library will store DCT'd data -into a buffer array as jpeg_write_scanlines() is called, and will emit all -the requested scans during jpeg_finish_compress(). This implies that -multiple-scan output cannot be created with a suspending data destination -manager, since jpeg_finish_compress() does not support suspension. We -should also note that the compressor currently forces Huffman optimization -mode when creating a progressive JPEG file, because the default Huffman -tables are unsuitable for progressive files. - -Progressive decompression: - -When buffered-image mode is not used, the decoder library will read all of -a multi-scan file during jpeg_start_decompress(), so that it can provide a -final decoded image. (Here "multi-scan" means either progressive or -multi-scan sequential.) This makes multi-scan files transparent to the -decoding application. However, existing applications that used suspending -input with version 5 of the IJG library will need to be modified to check -for a suspension return from jpeg_start_decompress(). - -To perform incremental display, an application must use the library's -buffered-image mode. This is described in the next section. - - -Buffered-image mode -------------------- - -In buffered-image mode, the library stores the partially decoded image in a -coefficient buffer, from which it can be read out as many times as desired. -This mode is typically used for incremental display of progressive JPEG files, -but it can be used with any JPEG file. Each scan of a progressive JPEG file -adds more data (more detail) to the buffered image. The application can -display in lockstep with the source file (one display pass per input scan), -or it can allow input processing to outrun display processing. By making -input and display processing run independently, it is possible for the -application to adapt progressive display to a wide range of data transmission -rates. - -The basic control flow for buffered-image decoding is - - jpeg_create_decompress() - set data source - jpeg_read_header() - set overall decompression parameters - cinfo.buffered_image = TRUE; /* select buffered-image mode */ - jpeg_start_decompress() - for (each output pass) { - adjust output decompression parameters if required - jpeg_start_output() /* start a new output pass */ - for (all scanlines in image) { - jpeg_read_scanlines() - display scanlines - } - jpeg_finish_output() /* terminate output pass */ - } - jpeg_finish_decompress() - jpeg_destroy_decompress() - -This differs from ordinary unbuffered decoding in that there is an additional -level of looping. The application can choose how many output passes to make -and how to display each pass. - -The simplest approach to displaying progressive images is to do one display -pass for each scan appearing in the input file. In this case the outer loop -condition is typically - while (! jpeg_input_complete(&cinfo)) -and the start-output call should read - jpeg_start_output(&cinfo, cinfo.input_scan_number); -The second parameter to jpeg_start_output() indicates which scan of the input -file is to be displayed; the scans are numbered starting at 1 for this -purpose. (You can use a loop counter starting at 1 if you like, but using -the library's input scan counter is easier.) The library automatically reads -data as necessary to complete each requested scan, and jpeg_finish_output() -advances to the next scan or end-of-image marker (hence input_scan_number -will be incremented by the time control arrives back at jpeg_start_output()). -With this technique, data is read from the input file only as needed, and -input and output processing run in lockstep. - -After reading the final scan and reaching the end of the input file, the -buffered image remains available; it can be read additional times by -repeating the jpeg_start_output()/jpeg_read_scanlines()/jpeg_finish_output() -sequence. For example, a useful technique is to use fast one-pass color -quantization for display passes made while the image is arriving, followed by -a final display pass using two-pass quantization for highest quality. This -is done by changing the library parameters before the final output pass. -Changing parameters between passes is discussed in detail below. - -In general the last scan of a progressive file cannot be recognized as such -until after it is read, so a post-input display pass is the best approach if -you want special processing in the final pass. - -When done with the image, be sure to call jpeg_finish_decompress() to release -the buffered image (or just use jpeg_destroy_decompress()). - -If input data arrives faster than it can be displayed, the application can -cause the library to decode input data in advance of what's needed to produce -output. This is done by calling the routine jpeg_consume_input(). -The return value is one of the following: - JPEG_REACHED_SOS: reached an SOS marker (the start of a new scan) - JPEG_REACHED_EOI: reached the EOI marker (end of image) - JPEG_ROW_COMPLETED: completed reading one MCU row of compressed data - JPEG_SCAN_COMPLETED: completed reading last MCU row of current scan - JPEG_SUSPENDED: suspended before completing any of the above -(JPEG_SUSPENDED can occur only if a suspending data source is used.) This -routine can be called at any time after initializing the JPEG object. It -reads some additional data and returns when one of the indicated significant -events occurs. (If called after the EOI marker is reached, it will -immediately return JPEG_REACHED_EOI without attempting to read more data.) - -The library's output processing will automatically call jpeg_consume_input() -whenever the output processing overtakes the input; thus, simple lockstep -display requires no direct calls to jpeg_consume_input(). But by adding -calls to jpeg_consume_input(), you can absorb data in advance of what is -being displayed. This has two benefits: - * You can limit buildup of unprocessed data in your input buffer. - * You can eliminate extra display passes by paying attention to the - state of the library's input processing. - -The first of these benefits only requires interspersing calls to -jpeg_consume_input() with your display operations and any other processing -you may be doing. To avoid wasting cycles due to backtracking, it's best to -call jpeg_consume_input() only after a hundred or so new bytes have arrived. -This is discussed further under "I/O suspension", above. (Note: the JPEG -library currently is not thread-safe. You must not call jpeg_consume_input() -from one thread of control if a different library routine is working on the -same JPEG object in another thread.) - -When input arrives fast enough that more than one new scan is available -before you start a new output pass, you may as well skip the output pass -corresponding to the completed scan. This occurs for free if you pass -cinfo.input_scan_number as the target scan number to jpeg_start_output(). -The input_scan_number field is simply the index of the scan currently being -consumed by the input processor. You can ensure that this is up-to-date by -emptying the input buffer just before calling jpeg_start_output(): call -jpeg_consume_input() repeatedly until it returns JPEG_SUSPENDED or -JPEG_REACHED_EOI. - -The target scan number passed to jpeg_start_output() is saved in the -cinfo.output_scan_number field. The library's output processing calls -jpeg_consume_input() whenever the current input scan number and row within -that scan is less than or equal to the current output scan number and row. -Thus, input processing can "get ahead" of the output processing but is not -allowed to "fall behind". You can achieve several different effects by -manipulating this interlock rule. For example, if you pass a target scan -number greater than the current input scan number, the output processor will -wait until that scan starts to arrive before producing any output. (To avoid -an infinite loop, the target scan number is automatically reset to the last -scan number when the end of image is reached. Thus, if you specify a large -target scan number, the library will just absorb the entire input file and -then perform an output pass. This is effectively the same as what -jpeg_start_decompress() does when you don't select buffered-image mode.) -When you pass a target scan number equal to the current input scan number, -the image is displayed no faster than the current input scan arrives. The -final possibility is to pass a target scan number less than the current input -scan number; this disables the input/output interlock and causes the output -processor to simply display whatever it finds in the image buffer, without -waiting for input. (However, the library will not accept a target scan -number less than one, so you can't avoid waiting for the first scan.) - -When data is arriving faster than the output display processing can advance -through the image, jpeg_consume_input() will store data into the buffered -image beyond the point at which the output processing is reading data out -again. If the input arrives fast enough, it may "wrap around" the buffer to -the point where the input is more than one whole scan ahead of the output. -If the output processing simply proceeds through its display pass without -paying attention to the input, the effect seen on-screen is that the lower -part of the image is one or more scans better in quality than the upper part. -Then, when the next output scan is started, you have a choice of what target -scan number to use. The recommended choice is to use the current input scan -number at that time, which implies that you've skipped the output scans -corresponding to the input scans that were completed while you processed the -previous output scan. In this way, the decoder automatically adapts its -speed to the arriving data, by skipping output scans as necessary to keep up -with the arriving data. - -When using this strategy, you'll want to be sure that you perform a final -output pass after receiving all the data; otherwise your last display may not -be full quality across the whole screen. So the right outer loop logic is -something like this: - do { - absorb any waiting input by calling jpeg_consume_input() - final_pass = jpeg_input_complete(&cinfo); - adjust output decompression parameters if required - jpeg_start_output(&cinfo, cinfo.input_scan_number); - ... - jpeg_finish_output() - } while (! final_pass); -rather than quitting as soon as jpeg_input_complete() returns TRUE. This -arrangement makes it simple to use higher-quality decoding parameters -for the final pass. But if you don't want to use special parameters for -the final pass, the right loop logic is like this: - for (;;) { - absorb any waiting input by calling jpeg_consume_input() - jpeg_start_output(&cinfo, cinfo.input_scan_number); - ... - jpeg_finish_output() - if (jpeg_input_complete(&cinfo) && - cinfo.input_scan_number == cinfo.output_scan_number) - break; - } -In this case you don't need to know in advance whether an output pass is to -be the last one, so it's not necessary to have reached EOF before starting -the final output pass; rather, what you want to test is whether the output -pass was performed in sync with the final input scan. This form of the loop -will avoid an extra output pass whenever the decoder is able (or nearly able) -to keep up with the incoming data. - -When the data transmission speed is high, you might begin a display pass, -then find that much or all of the file has arrived before you can complete -the pass. (You can detect this by noting the JPEG_REACHED_EOI return code -from jpeg_consume_input(), or equivalently by testing jpeg_input_complete().) -In this situation you may wish to abort the current display pass and start a -new one using the newly arrived information. To do so, just call -jpeg_finish_output() and then start a new pass with jpeg_start_output(). - -A variant strategy is to abort and restart display if more than one complete -scan arrives during an output pass; this can be detected by noting -JPEG_REACHED_SOS returns and/or examining cinfo.input_scan_number. This -idea should be employed with caution, however, since the display process -might never get to the bottom of the image before being aborted, resulting -in the lower part of the screen being several passes worse than the upper. -In most cases it's probably best to abort an output pass only if the whole -file has arrived and you want to begin the final output pass immediately. - -When receiving data across a communication link, we recommend always using -the current input scan number for the output target scan number; if a -higher-quality final pass is to be done, it should be started (aborting any -incomplete output pass) as soon as the end of file is received. However, -many other strategies are possible. For example, the application can examine -the parameters of the current input scan and decide whether to display it or -not. If the scan contains only chroma data, one might choose not to use it -as the target scan, expecting that the scan will be small and will arrive -quickly. To skip to the next scan, call jpeg_consume_input() until it -returns JPEG_REACHED_SOS or JPEG_REACHED_EOI. Or just use the next higher -number as the target scan for jpeg_start_output(); but that method doesn't -let you inspect the next scan's parameters before deciding to display it. - - -In buffered-image mode, jpeg_start_decompress() never performs input and -thus never suspends. An application that uses input suspension with -buffered-image mode must be prepared for suspension returns from these -routines: -* jpeg_start_output() performs input only if you request 2-pass quantization - and the target scan isn't fully read yet. (This is discussed below.) -* jpeg_read_scanlines(), as always, returns the number of scanlines that it - was able to produce before suspending. -* jpeg_finish_output() will read any markers following the target scan, - up to the end of the file or the SOS marker that begins another scan. - (But it reads no input if jpeg_consume_input() has already reached the - end of the file or a SOS marker beyond the target output scan.) -* jpeg_finish_decompress() will read until the end of file, and thus can - suspend if the end hasn't already been reached (as can be tested by - calling jpeg_input_complete()). -jpeg_start_output(), jpeg_finish_output(), and jpeg_finish_decompress() -all return TRUE if they completed their tasks, FALSE if they had to suspend. -In the event of a FALSE return, the application must load more input data -and repeat the call. Applications that use non-suspending data sources need -not check the return values of these three routines. - - -It is possible to change decoding parameters between output passes in the -buffered-image mode. The decoder library currently supports only very -limited changes of parameters. ONLY THE FOLLOWING parameter changes are -allowed after jpeg_start_decompress() is called: -* dct_method can be changed before each call to jpeg_start_output(). - For example, one could use a fast DCT method for early scans, changing - to a higher quality method for the final scan. -* dither_mode can be changed before each call to jpeg_start_output(); - of course this has no impact if not using color quantization. Typically - one would use ordered dither for initial passes, then switch to - Floyd-Steinberg dither for the final pass. Caution: changing dither mode - can cause more memory to be allocated by the library. Although the amount - of memory involved is not large (a scanline or so), it may cause the - initial max_memory_to_use specification to be exceeded, which in the worst - case would result in an out-of-memory failure. -* do_block_smoothing can be changed before each call to jpeg_start_output(). - This setting is relevant only when decoding a progressive JPEG image. - During the first DC-only scan, block smoothing provides a very "fuzzy" look - instead of the very "blocky" look seen without it; which is better seems a - matter of personal taste. But block smoothing is nearly always a win - during later stages, especially when decoding a successive-approximation - image: smoothing helps to hide the slight blockiness that otherwise shows - up on smooth gradients until the lowest coefficient bits are sent. -* Color quantization mode can be changed under the rules described below. - You *cannot* change between full-color and quantized output (because that - would alter the required I/O buffer sizes), but you can change which - quantization method is used. - -When generating color-quantized output, changing quantization method is a -very useful way of switching between high-speed and high-quality display. -The library allows you to change among its three quantization methods: -1. Single-pass quantization to a fixed color cube. - Selected by cinfo.two_pass_quantize = FALSE and cinfo.colormap = NULL. -2. Single-pass quantization to an application-supplied colormap. - Selected by setting cinfo.colormap to point to the colormap (the value of - two_pass_quantize is ignored); also set cinfo.actual_number_of_colors. -3. Two-pass quantization to a colormap chosen specifically for the image. - Selected by cinfo.two_pass_quantize = TRUE and cinfo.colormap = NULL. - (This is the default setting selected by jpeg_read_header, but it is - probably NOT what you want for the first pass of progressive display!) -These methods offer successively better quality and lesser speed. However, -only the first method is available for quantizing in non-RGB color spaces. - -IMPORTANT: because the different quantizer methods have very different -working-storage requirements, the library requires you to indicate which -one(s) you intend to use before you call jpeg_start_decompress(). (If we did -not require this, the max_memory_to_use setting would be a complete fiction.) -You do this by setting one or more of these three cinfo fields to TRUE: - enable_1pass_quant Fixed color cube colormap - enable_external_quant Externally-supplied colormap - enable_2pass_quant Two-pass custom colormap -All three are initialized FALSE by jpeg_read_header(). But -jpeg_start_decompress() automatically sets TRUE the one selected by the -current two_pass_quantize and colormap settings, so you only need to set the -enable flags for any other quantization methods you plan to change to later. - -After setting the enable flags correctly at jpeg_start_decompress() time, you -can change to any enabled quantization method by setting two_pass_quantize -and colormap properly just before calling jpeg_start_output(). The following -special rules apply: -1. You must explicitly set cinfo.colormap to NULL when switching to 1-pass - or 2-pass mode from a different mode, or when you want the 2-pass - quantizer to be re-run to generate a new colormap. -2. To switch to an external colormap, or to change to a different external - colormap than was used on the prior pass, you must call - jpeg_new_colormap() after setting cinfo.colormap. -NOTE: if you want to use the same colormap as was used in the prior pass, -you should not do either of these things. This will save some nontrivial -switchover costs. -(These requirements exist because cinfo.colormap will always be non-NULL -after completing a prior output pass, since both the 1-pass and 2-pass -quantizers set it to point to their output colormaps. Thus you have to -do one of these two things to notify the library that something has changed. -Yup, it's a bit klugy, but it's necessary to do it this way for backwards -compatibility.) - -Note that in buffered-image mode, the library generates any requested colormap -during jpeg_start_output(), not during jpeg_start_decompress(). - -When using two-pass quantization, jpeg_start_output() makes a pass over the -buffered image to determine the optimum color map; it therefore may take a -significant amount of time, whereas ordinarily it does little work. The -progress monitor hook is called during this pass, if defined. It is also -important to realize that if the specified target scan number is greater than -or equal to the current input scan number, jpeg_start_output() will attempt -to consume input as it makes this pass. If you use a suspending data source, -you need to check for a FALSE return from jpeg_start_output() under these -conditions. The combination of 2-pass quantization and a not-yet-fully-read -target scan is the only case in which jpeg_start_output() will consume input. - - -Application authors who support buffered-image mode may be tempted to use it -for all JPEG images, even single-scan ones. This will work, but it is -inefficient: there is no need to create an image-sized coefficient buffer for -single-scan images. Requesting buffered-image mode for such an image wastes -memory. Worse, it can cost time on large images, since the buffered data has -to be swapped out or written to a temporary file. If you are concerned about -maximum performance on baseline JPEG files, you should use buffered-image -mode only when the incoming file actually has multiple scans. This can be -tested by calling jpeg_has_multiple_scans(), which will return a correct -result at any time after jpeg_read_header() completes. - -It is also worth noting that when you use jpeg_consume_input() to let input -processing get ahead of output processing, the resulting pattern of access to -the coefficient buffer is quite nonsequential. It's best to use the memory -manager jmemnobs.c if you can (ie, if you have enough real or virtual main -memory). If not, at least make sure that max_memory_to_use is set as high as -possible. If the JPEG memory manager has to use a temporary file, you will -probably see a lot of disk traffic and poor performance. (This could be -improved with additional work on the memory manager, but we haven't gotten -around to it yet.) - -In some applications it may be convenient to use jpeg_consume_input() for all -input processing, including reading the initial markers; that is, you may -wish to call jpeg_consume_input() instead of jpeg_read_header() during -startup. This works, but note that you must check for JPEG_REACHED_SOS and -JPEG_REACHED_EOI return codes as the equivalent of jpeg_read_header's codes. -Once the first SOS marker has been reached, you must call -jpeg_start_decompress() before jpeg_consume_input() will consume more input; -it'll just keep returning JPEG_REACHED_SOS until you do. If you read a -tables-only file this way, jpeg_consume_input() will return JPEG_REACHED_EOI -without ever returning JPEG_REACHED_SOS; be sure to check for this case. -If this happens, the decompressor will not read any more input until you call -jpeg_abort() to reset it. It is OK to call jpeg_consume_input() even when not -using buffered-image mode, but in that case it's basically a no-op after the -initial markers have been read: it will just return JPEG_SUSPENDED. - - -Abbreviated datastreams and multiple images -------------------------------------------- - -A JPEG compression or decompression object can be reused to process multiple -images. This saves a small amount of time per image by eliminating the -"create" and "destroy" operations, but that isn't the real purpose of the -feature. Rather, reuse of an object provides support for abbreviated JPEG -datastreams. Object reuse can also simplify processing a series of images in -a single input or output file. This section explains these features. - -A JPEG file normally contains several hundred bytes worth of quantization -and Huffman tables. In a situation where many images will be stored or -transmitted with identical tables, this may represent an annoying overhead. -The JPEG standard therefore permits tables to be omitted. The standard -defines three classes of JPEG datastreams: - * "Interchange" datastreams contain an image and all tables needed to decode - the image. These are the usual kind of JPEG file. - * "Abbreviated image" datastreams contain an image, but are missing some or - all of the tables needed to decode that image. - * "Abbreviated table specification" (henceforth "tables-only") datastreams - contain only table specifications. -To decode an abbreviated image, it is necessary to load the missing table(s) -into the decoder beforehand. This can be accomplished by reading a separate -tables-only file. A variant scheme uses a series of images in which the first -image is an interchange (complete) datastream, while subsequent ones are -abbreviated and rely on the tables loaded by the first image. It is assumed -that once the decoder has read a table, it will remember that table until a -new definition for the same table number is encountered. - -It is the application designer's responsibility to figure out how to associate -the correct tables with an abbreviated image. While abbreviated datastreams -can be useful in a closed environment, their use is strongly discouraged in -any situation where data exchange with other applications might be needed. -Caveat designer. - -The JPEG library provides support for reading and writing any combination of -tables-only datastreams and abbreviated images. In both compression and -decompression objects, a quantization or Huffman table will be retained for -the lifetime of the object, unless it is overwritten by a new table definition. - - -To create abbreviated image datastreams, it is only necessary to tell the -compressor not to emit some or all of the tables it is using. Each -quantization and Huffman table struct contains a boolean field "sent_table", -which normally is initialized to FALSE. For each table used by the image, the -header-writing process emits the table and sets sent_table = TRUE unless it is -already TRUE. (In normal usage, this prevents outputting the same table -definition multiple times, as would otherwise occur because the chroma -components typically share tables.) Thus, setting this field to TRUE before -calling jpeg_start_compress() will prevent the table from being written at -all. - -If you want to create a "pure" abbreviated image file containing no tables, -just call "jpeg_suppress_tables(&cinfo, TRUE)" after constructing all the -tables. If you want to emit some but not all tables, you'll need to set the -individual sent_table fields directly. - -To create an abbreviated image, you must also call jpeg_start_compress() -with a second parameter of FALSE, not TRUE. Otherwise jpeg_start_compress() -will force all the sent_table fields to FALSE. (This is a safety feature to -prevent abbreviated images from being created accidentally.) - -To create a tables-only file, perform the same parameter setup that you -normally would, but instead of calling jpeg_start_compress() and so on, call -jpeg_write_tables(&cinfo). This will write an abbreviated datastream -containing only SOI, DQT and/or DHT markers, and EOI. All the quantization -and Huffman tables that are currently defined in the compression object will -be emitted unless their sent_tables flag is already TRUE, and then all the -sent_tables flags will be set TRUE. - -A sure-fire way to create matching tables-only and abbreviated image files -is to proceed as follows: - - create JPEG compression object - set JPEG parameters - set destination to tables-only file - jpeg_write_tables(&cinfo); - set destination to image file - jpeg_start_compress(&cinfo, FALSE); - write data... - jpeg_finish_compress(&cinfo); - -Since the JPEG parameters are not altered between writing the table file and -the abbreviated image file, the same tables are sure to be used. Of course, -you can repeat the jpeg_start_compress() ... jpeg_finish_compress() sequence -many times to produce many abbreviated image files matching the table file. - -You cannot suppress output of the computed Huffman tables when Huffman -optimization is selected. (If you could, there'd be no way to decode the -image...) Generally, you don't want to set optimize_coding = TRUE when -you are trying to produce abbreviated files. - -In some cases you might want to compress an image using tables which are -not stored in the application, but are defined in an interchange or -tables-only file readable by the application. This can be done by setting up -a JPEG decompression object to read the specification file, then copying the -tables into your compression object. See jpeg_copy_critical_parameters() -for an example of copying quantization tables. - - -To read abbreviated image files, you simply need to load the proper tables -into the decompression object before trying to read the abbreviated image. -If the proper tables are stored in the application program, you can just -allocate the table structs and fill in their contents directly. For example, -to load a fixed quantization table into table slot "n": - - if (cinfo.quant_tbl_ptrs[n] == NULL) - cinfo.quant_tbl_ptrs[n] = jpeg_alloc_quant_table((j_common_ptr) &cinfo); - quant_ptr = cinfo.quant_tbl_ptrs[n]; /* quant_ptr is JQUANT_TBL* */ - for (i = 0; i < 64; i++) { - /* Qtable[] is desired quantization table, in natural array order */ - quant_ptr->quantval[i] = Qtable[i]; - } - -Code to load a fixed Huffman table is typically (for AC table "n"): - - if (cinfo.ac_huff_tbl_ptrs[n] == NULL) - cinfo.ac_huff_tbl_ptrs[n] = jpeg_alloc_huff_table((j_common_ptr) &cinfo); - huff_ptr = cinfo.ac_huff_tbl_ptrs[n]; /* huff_ptr is JHUFF_TBL* */ - for (i = 1; i <= 16; i++) { - /* counts[i] is number of Huffman codes of length i bits, i=1..16 */ - huff_ptr->bits[i] = counts[i]; - } - for (i = 0; i < 256; i++) { - /* symbols[] is the list of Huffman symbols, in code-length order */ - huff_ptr->huffval[i] = symbols[i]; - } - -(Note that trying to set cinfo.quant_tbl_ptrs[n] to point directly at a -constant JQUANT_TBL object is not safe. If the incoming file happened to -contain a quantization table definition, your master table would get -overwritten! Instead allocate a working table copy and copy the master table -into it, as illustrated above. Ditto for Huffman tables, of course.) - -You might want to read the tables from a tables-only file, rather than -hard-wiring them into your application. The jpeg_read_header() call is -sufficient to read a tables-only file. You must pass a second parameter of -FALSE to indicate that you do not require an image to be present. Thus, the -typical scenario is - - create JPEG decompression object - set source to tables-only file - jpeg_read_header(&cinfo, FALSE); - set source to abbreviated image file - jpeg_read_header(&cinfo, TRUE); - set decompression parameters - jpeg_start_decompress(&cinfo); - read data... - jpeg_finish_decompress(&cinfo); - -In some cases, you may want to read a file without knowing whether it contains -an image or just tables. In that case, pass FALSE and check the return value -from jpeg_read_header(): it will be JPEG_HEADER_OK if an image was found, -JPEG_HEADER_TABLES_ONLY if only tables were found. (A third return value, -JPEG_SUSPENDED, is possible when using a suspending data source manager.) -Note that jpeg_read_header() will not complain if you read an abbreviated -image for which you haven't loaded the missing tables; the missing-table check -occurs later, in jpeg_start_decompress(). - - -It is possible to read a series of images from a single source file by -repeating the jpeg_read_header() ... jpeg_finish_decompress() sequence, -without releasing/recreating the JPEG object or the data source module. -(If you did reinitialize, any partial bufferload left in the data source -buffer at the end of one image would be discarded, causing you to lose the -start of the next image.) When you use this method, stored tables are -automatically carried forward, so some of the images can be abbreviated images -that depend on tables from earlier images. - -If you intend to write a series of images into a single destination file, -you might want to make a specialized data destination module that doesn't -flush the output buffer at term_destination() time. This would speed things -up by some trifling amount. Of course, you'd need to remember to flush the -buffer after the last image. You can make the later images be abbreviated -ones by passing FALSE to jpeg_start_compress(). - - -Special markers ---------------- - -Some applications may need to insert or extract special data in the JPEG -datastream. The JPEG standard provides marker types "COM" (comment) and -"APP0" through "APP15" (application) to hold application-specific data. -Unfortunately, the use of these markers is not specified by the standard. -COM markers are fairly widely used to hold user-supplied text. The JFIF file -format spec uses APP0 markers with specified initial strings to hold certain -data. Adobe applications use APP14 markers beginning with the string "Adobe" -for miscellaneous data. Other APPn markers are rarely seen, but might -contain almost anything. - -If you wish to store user-supplied text, we recommend you use COM markers -and place readable 7-bit ASCII text in them. Newline conventions are not -standardized --- expect to find LF (Unix style), CR/LF (DOS style), or CR -(Mac style). A robust COM reader should be able to cope with random binary -garbage, including nulls, since some applications generate COM markers -containing non-ASCII junk. (But yours should not be one of them.) - -For program-supplied data, use an APPn marker, and be sure to begin it with an -identifying string so that you can tell whether the marker is actually yours. -It's probably best to avoid using APP0 or APP14 for any private markers. -(NOTE: the upcoming SPIFF standard will use APP8 markers; we recommend you -not use APP8 markers for any private purposes, either.) - -Keep in mind that at most 65533 bytes can be put into one marker, but you -can have as many markers as you like. - -By default, the IJG compression library will write a JFIF APP0 marker if the -selected JPEG colorspace is grayscale or YCbCr, or an Adobe APP14 marker if -the selected colorspace is RGB, CMYK, or YCCK. You can disable this, but -we don't recommend it. The decompression library will recognize JFIF and -Adobe markers and will set the JPEG colorspace properly when one is found. - - -You can write special markers immediately following the datastream header by -calling jpeg_write_marker() after jpeg_start_compress() and before the first -call to jpeg_write_scanlines(). When you do this, the markers appear after -the SOI and the JFIF APP0 and Adobe APP14 markers (if written), but before -all else. Specify the marker type parameter as "JPEG_COM" for COM or -"JPEG_APP0 + n" for APPn. (Actually, jpeg_write_marker will let you write -any marker type, but we don't recommend writing any other kinds of marker.) -For example, to write a user comment string pointed to by comment_text: - jpeg_write_marker(cinfo, JPEG_COM, comment_text, strlen(comment_text)); - -If it's not convenient to store all the marker data in memory at once, -you can instead call jpeg_write_m_header() followed by multiple calls to -jpeg_write_m_byte(). If you do it this way, it's your responsibility to -call jpeg_write_m_byte() exactly the number of times given in the length -parameter to jpeg_write_m_header(). (This method lets you empty the -output buffer partway through a marker, which might be important when -using a suspending data destination module. In any case, if you are using -a suspending destination, you should flush its buffer after inserting -any special markers. See "I/O suspension".) - -Or, if you prefer to synthesize the marker byte sequence yourself, -you can just cram it straight into the data destination module. - -If you are writing JFIF 1.02 extension markers (thumbnail images), don't -forget to set cinfo.JFIF_minor_version = 2 so that the encoder will write the -correct JFIF version number in the JFIF header marker. The library's default -is to write version 1.01, but that's wrong if you insert any 1.02 extension -markers. (We could probably get away with just defaulting to 1.02, but there -used to be broken decoders that would complain about unknown minor version -numbers. To reduce compatibility risks it's safest not to write 1.02 unless -you are actually using 1.02 extensions.) - - -When reading, two methods of handling special markers are available: -1. You can ask the library to save the contents of COM and/or APPn markers -into memory, and then examine them at your leisure afterwards. -2. You can supply your own routine to process COM and/or APPn markers -on-the-fly as they are read. -The first method is simpler to use, especially if you are using a suspending -data source; writing a marker processor that copes with input suspension is -not easy (consider what happens if the marker is longer than your available -input buffer). However, the second method conserves memory since the marker -data need not be kept around after it's been processed. - -For either method, you'd normally set up marker handling after creating a -decompression object and before calling jpeg_read_header(), because the -markers of interest will typically be near the head of the file and so will -be scanned by jpeg_read_header. Once you've established a marker handling -method, it will be used for the life of that decompression object -(potentially many datastreams), unless you change it. Marker handling is -determined separately for COM markers and for each APPn marker code. - - -To save the contents of special markers in memory, call - jpeg_save_markers(cinfo, marker_code, length_limit) -where marker_code is the marker type to save, JPEG_COM or JPEG_APP0+n. -(To arrange to save all the special marker types, you need to call this -routine 17 times, for COM and APP0-APP15.) If the incoming marker is longer -than length_limit data bytes, only length_limit bytes will be saved; this -parameter allows you to avoid chewing up memory when you only need to see the -first few bytes of a potentially large marker. If you want to save all the -data, set length_limit to 0xFFFF; that is enough since marker lengths are only -16 bits. As a special case, setting length_limit to 0 prevents that marker -type from being saved at all. (That is the default behavior, in fact.) - -After jpeg_read_header() completes, you can examine the special markers by -following the cinfo->marker_list pointer chain. All the special markers in -the file appear in this list, in order of their occurrence in the file (but -omitting any markers of types you didn't ask for). Both the original data -length and the saved data length are recorded for each list entry; the latter -will not exceed length_limit for the particular marker type. Note that these -lengths exclude the marker length word, whereas the stored representation -within the JPEG file includes it. (Hence the maximum data length is really -only 65533.) - -It is possible that additional special markers appear in the file beyond the -SOS marker at which jpeg_read_header stops; if so, the marker list will be -extended during reading of the rest of the file. This is not expected to be -common, however. If you are short on memory you may want to reset the length -limit to zero for all marker types after finishing jpeg_read_header, to -ensure that the max_memory_to_use setting cannot be exceeded due to addition -of later markers. - -The marker list remains stored until you call jpeg_finish_decompress or -jpeg_abort, at which point the memory is freed and the list is set to empty. -(jpeg_destroy also releases the storage, of course.) - -Note that the library is internally interested in APP0 and APP14 markers; -if you try to set a small nonzero length limit on these types, the library -will silently force the length up to the minimum it wants. (But you can set -a zero length limit to prevent them from being saved at all.) Also, in a -16-bit environment, the maximum length limit may be constrained to less than -65533 by malloc() limitations. It is therefore best not to assume that the -effective length limit is exactly what you set it to be. - - -If you want to supply your own marker-reading routine, you do it by calling -jpeg_set_marker_processor(). A marker processor routine must have the -signature - boolean jpeg_marker_parser_method (j_decompress_ptr cinfo) -Although the marker code is not explicitly passed, the routine can find it -in cinfo->unread_marker. At the time of call, the marker proper has been -read from the data source module. The processor routine is responsible for -reading the marker length word and the remaining parameter bytes, if any. -Return TRUE to indicate success. (FALSE should be returned only if you are -using a suspending data source and it tells you to suspend. See the standard -marker processors in jdmarker.c for appropriate coding methods if you need to -use a suspending data source.) - -If you override the default APP0 or APP14 processors, it is up to you to -recognize JFIF and Adobe markers if you want colorspace recognition to occur -properly. We recommend copying and extending the default processors if you -want to do that. (A better idea is to save these marker types for later -examination by calling jpeg_save_markers(); that method doesn't interfere -with the library's own processing of these markers.) - -jpeg_set_marker_processor() and jpeg_save_markers() are mutually exclusive ---- if you call one it overrides any previous call to the other, for the -particular marker type specified. - -A simple example of an external COM processor can be found in djpeg.c. -Also, see jpegtran.c for an example of using jpeg_save_markers. - - -Raw (downsampled) image data ----------------------------- - -Some applications need to supply already-downsampled image data to the JPEG -compressor, or to receive raw downsampled data from the decompressor. The -library supports this requirement by allowing the application to write or -read raw data, bypassing the normal preprocessing or postprocessing steps. -The interface is different from the standard one and is somewhat harder to -use. If your interest is merely in bypassing color conversion, we recommend -that you use the standard interface and simply set jpeg_color_space = -in_color_space (or jpeg_color_space = out_color_space for decompression). -The mechanism described in this section is necessary only to supply or -receive downsampled image data, in which not all components have the same -dimensions. - - -To compress raw data, you must supply the data in the colorspace to be used -in the JPEG file (please read the earlier section on Special color spaces) -and downsampled to the sampling factors specified in the JPEG parameters. -You must supply the data in the format used internally by the JPEG library, -namely a JSAMPIMAGE array. This is an array of pointers to two-dimensional -arrays, each of type JSAMPARRAY. Each 2-D array holds the values for one -color component. This structure is necessary since the components are of -different sizes. If the image dimensions are not a multiple of the MCU size, -you must also pad the data correctly (usually, this is done by replicating -the last column and/or row). The data must be padded to a multiple of a DCT -block in each component: that is, each downsampled row must contain a -multiple of 8 valid samples, and there must be a multiple of 8 sample rows -for each component. (For applications such as conversion of digital TV -images, the standard image size is usually a multiple of the DCT block size, -so that no padding need actually be done.) - -The procedure for compression of raw data is basically the same as normal -compression, except that you call jpeg_write_raw_data() in place of -jpeg_write_scanlines(). Before calling jpeg_start_compress(), you must do -the following: - * Set cinfo->raw_data_in to TRUE. (It is set FALSE by jpeg_set_defaults().) - This notifies the library that you will be supplying raw data. - * Ensure jpeg_color_space is correct --- an explicit jpeg_set_colorspace() - call is a good idea. Note that since color conversion is bypassed, - in_color_space is ignored, except that jpeg_set_defaults() uses it to - choose the default jpeg_color_space setting. - * Ensure the sampling factors, cinfo->comp_info[i].h_samp_factor and - cinfo->comp_info[i].v_samp_factor, are correct. Since these indicate the - dimensions of the data you are supplying, it's wise to set them - explicitly, rather than assuming the library's defaults are what you want. - -To pass raw data to the library, call jpeg_write_raw_data() in place of -jpeg_write_scanlines(). The two routines work similarly except that -jpeg_write_raw_data takes a JSAMPIMAGE data array rather than JSAMPARRAY. -The scanlines count passed to and returned from jpeg_write_raw_data is -measured in terms of the component with the largest v_samp_factor. - -jpeg_write_raw_data() processes one MCU row per call, which is to say -v_samp_factor*DCTSIZE sample rows of each component. The passed num_lines -value must be at least max_v_samp_factor*DCTSIZE, and the return value will -be exactly that amount (or possibly some multiple of that amount, in future -library versions). This is true even on the last call at the bottom of the -image; don't forget to pad your data as necessary. - -The required dimensions of the supplied data can be computed for each -component as - cinfo->comp_info[i].width_in_blocks*DCTSIZE samples per row - cinfo->comp_info[i].height_in_blocks*DCTSIZE rows in image -after jpeg_start_compress() has initialized those fields. If the valid data -is smaller than this, it must be padded appropriately. For some sampling -factors and image sizes, additional dummy DCT blocks are inserted to make -the image a multiple of the MCU dimensions. The library creates such dummy -blocks itself; it does not read them from your supplied data. Therefore you -need never pad by more than DCTSIZE samples. An example may help here. -Assume 2h2v downsampling of YCbCr data, that is - cinfo->comp_info[0].h_samp_factor = 2 for Y - cinfo->comp_info[0].v_samp_factor = 2 - cinfo->comp_info[1].h_samp_factor = 1 for Cb - cinfo->comp_info[1].v_samp_factor = 1 - cinfo->comp_info[2].h_samp_factor = 1 for Cr - cinfo->comp_info[2].v_samp_factor = 1 -and suppose that the nominal image dimensions (cinfo->image_width and -cinfo->image_height) are 101x101 pixels. Then jpeg_start_compress() will -compute downsampled_width = 101 and width_in_blocks = 13 for Y, -downsampled_width = 51 and width_in_blocks = 7 for Cb and Cr (and the same -for the height fields). You must pad the Y data to at least 13*8 = 104 -columns and rows, the Cb/Cr data to at least 7*8 = 56 columns and rows. The -MCU height is max_v_samp_factor = 2 DCT rows so you must pass at least 16 -scanlines on each call to jpeg_write_raw_data(), which is to say 16 actual -sample rows of Y and 8 each of Cb and Cr. A total of 7 MCU rows are needed, -so you must pass a total of 7*16 = 112 "scanlines". The last DCT block row -of Y data is dummy, so it doesn't matter what you pass for it in the data -arrays, but the scanlines count must total up to 112 so that all of the Cb -and Cr data gets passed. - -Output suspension is supported with raw-data compression: if the data -destination module suspends, jpeg_write_raw_data() will return 0. -In this case the same data rows must be passed again on the next call. - - -Decompression with raw data output implies bypassing all postprocessing: -you cannot ask for rescaling or color quantization, for instance. More -seriously, you must deal with the color space and sampling factors present in -the incoming file. If your application only handles, say, 2h1v YCbCr data, -you must check for and fail on other color spaces or other sampling factors. -The library will not convert to a different color space for you. - -To obtain raw data output, set cinfo->raw_data_out = TRUE before -jpeg_start_decompress() (it is set FALSE by jpeg_read_header()). Be sure to -verify that the color space and sampling factors are ones you can handle. -Then call jpeg_read_raw_data() in place of jpeg_read_scanlines(). The -decompression process is otherwise the same as usual. - -jpeg_read_raw_data() returns one MCU row per call, and thus you must pass a -buffer of at least max_v_samp_factor*DCTSIZE scanlines (scanline counting is -the same as for raw-data compression). The buffer you pass must be large -enough to hold the actual data plus padding to DCT-block boundaries. As with -compression, any entirely dummy DCT blocks are not processed so you need not -allocate space for them, but the total scanline count includes them. The -above example of computing buffer dimensions for raw-data compression is -equally valid for decompression. - -Input suspension is supported with raw-data decompression: if the data source -module suspends, jpeg_read_raw_data() will return 0. You can also use -buffered-image mode to read raw data in multiple passes. - - -Really raw data: DCT coefficients ---------------------------------- - -It is possible to read or write the contents of a JPEG file as raw DCT -coefficients. This facility is mainly intended for use in lossless -transcoding between different JPEG file formats. Other possible applications -include lossless cropping of a JPEG image, lossless reassembly of a -multi-strip or multi-tile TIFF/JPEG file into a single JPEG datastream, etc. - -To read the contents of a JPEG file as DCT coefficients, open the file and do -jpeg_read_header() as usual. But instead of calling jpeg_start_decompress() -and jpeg_read_scanlines(), call jpeg_read_coefficients(). This will read the -entire image into a set of virtual coefficient-block arrays, one array per -component. The return value is a pointer to an array of virtual-array -descriptors. Each virtual array can be accessed directly using the JPEG -memory manager's access_virt_barray method (see Memory management, below, -and also read structure.doc's discussion of virtual array handling). Or, -for simple transcoding to a different JPEG file format, the array list can -just be handed directly to jpeg_write_coefficients(). - -Each block in the block arrays contains quantized coefficient values in -normal array order (not JPEG zigzag order). The block arrays contain only -DCT blocks containing real data; any entirely-dummy blocks added to fill out -interleaved MCUs at the right or bottom edges of the image are discarded -during reading and are not stored in the block arrays. (The size of each -block array can be determined from the width_in_blocks and height_in_blocks -fields of the component's comp_info entry.) This is also the data format -expected by jpeg_write_coefficients(). - -When you are done using the virtual arrays, call jpeg_finish_decompress() -to release the array storage and return the decompression object to an idle -state; or just call jpeg_destroy() if you don't need to reuse the object. - -If you use a suspending data source, jpeg_read_coefficients() will return -NULL if it is forced to suspend; a non-NULL return value indicates successful -completion. You need not test for a NULL return value when using a -non-suspending data source. - -It is also possible to call jpeg_read_coefficients() to obtain access to the -decoder's coefficient arrays during a normal decode cycle in buffered-image -mode. This frammish might be useful for progressively displaying an incoming -image and then re-encoding it without loss. To do this, decode in buffered- -image mode as discussed previously, then call jpeg_read_coefficients() after -the last jpeg_finish_output() call. The arrays will be available for your use -until you call jpeg_finish_decompress(). - - -To write the contents of a JPEG file as DCT coefficients, you must provide -the DCT coefficients stored in virtual block arrays. You can either pass -block arrays read from an input JPEG file by jpeg_read_coefficients(), or -allocate virtual arrays from the JPEG compression object and fill them -yourself. In either case, jpeg_write_coefficients() is substituted for -jpeg_start_compress() and jpeg_write_scanlines(). Thus the sequence is - * Create compression object - * Set all compression parameters as necessary - * Request virtual arrays if needed - * jpeg_write_coefficients() - * jpeg_finish_compress() - * Destroy or re-use compression object -jpeg_write_coefficients() is passed a pointer to an array of virtual block -array descriptors; the number of arrays is equal to cinfo.num_components. - -The virtual arrays need only have been requested, not realized, before -jpeg_write_coefficients() is called. A side-effect of -jpeg_write_coefficients() is to realize any virtual arrays that have been -requested from the compression object's memory manager. Thus, when obtaining -the virtual arrays from the compression object, you should fill the arrays -after calling jpeg_write_coefficients(). The data is actually written out -when you call jpeg_finish_compress(); jpeg_write_coefficients() only writes -the file header. - -When writing raw DCT coefficients, it is crucial that the JPEG quantization -tables and sampling factors match the way the data was encoded, or the -resulting file will be invalid. For transcoding from an existing JPEG file, -we recommend using jpeg_copy_critical_parameters(). This routine initializes -all the compression parameters to default values (like jpeg_set_defaults()), -then copies the critical information from a source decompression object. -The decompression object should have just been used to read the entire -JPEG input file --- that is, it should be awaiting jpeg_finish_decompress(). - -jpeg_write_coefficients() marks all tables stored in the compression object -as needing to be written to the output file (thus, it acts like -jpeg_start_compress(cinfo, TRUE)). This is for safety's sake, to avoid -emitting abbreviated JPEG files by accident. If you really want to emit an -abbreviated JPEG file, call jpeg_suppress_tables(), or set the tables' -individual sent_table flags, between calling jpeg_write_coefficients() and -jpeg_finish_compress(). - - -Progress monitoring -------------------- - -Some applications may need to regain control from the JPEG library every so -often. The typical use of this feature is to produce a percent-done bar or -other progress display. (For a simple example, see cjpeg.c or djpeg.c.) -Although you do get control back frequently during the data-transferring pass -(the jpeg_read_scanlines or jpeg_write_scanlines loop), any additional passes -will occur inside jpeg_finish_compress or jpeg_start_decompress; those -routines may take a long time to execute, and you don't get control back -until they are done. - -You can define a progress-monitor routine which will be called periodically -by the library. No guarantees are made about how often this call will occur, -so we don't recommend you use it for mouse tracking or anything like that. -At present, a call will occur once per MCU row, scanline, or sample row -group, whichever unit is convenient for the current processing mode; so the -wider the image, the longer the time between calls. During the data -transferring pass, only one call occurs per call of jpeg_read_scanlines or -jpeg_write_scanlines, so don't pass a large number of scanlines at once if -you want fine resolution in the progress count. (If you really need to use -the callback mechanism for time-critical tasks like mouse tracking, you could -insert additional calls inside some of the library's inner loops.) - -To establish a progress-monitor callback, create a struct jpeg_progress_mgr, -fill in its progress_monitor field with a pointer to your callback routine, -and set cinfo->progress to point to the struct. The callback will be called -whenever cinfo->progress is non-NULL. (This pointer is set to NULL by -jpeg_create_compress or jpeg_create_decompress; the library will not change -it thereafter. So if you allocate dynamic storage for the progress struct, -make sure it will live as long as the JPEG object does. Allocating from the -JPEG memory manager with lifetime JPOOL_PERMANENT will work nicely.) You -can use the same callback routine for both compression and decompression. - -The jpeg_progress_mgr struct contains four fields which are set by the library: - long pass_counter; /* work units completed in this pass */ - long pass_limit; /* total number of work units in this pass */ - int completed_passes; /* passes completed so far */ - int total_passes; /* total number of passes expected */ -During any one pass, pass_counter increases from 0 up to (not including) -pass_limit; the step size is usually but not necessarily 1. The pass_limit -value may change from one pass to another. The expected total number of -passes is in total_passes, and the number of passes already completed is in -completed_passes. Thus the fraction of work completed may be estimated as - completed_passes + (pass_counter/pass_limit) - -------------------------------------------- - total_passes -ignoring the fact that the passes may not be equal amounts of work. - -When decompressing, pass_limit can even change within a pass, because it -depends on the number of scans in the JPEG file, which isn't always known in -advance. The computed fraction-of-work-done may jump suddenly (if the library -discovers it has overestimated the number of scans) or even decrease (in the -opposite case). It is not wise to put great faith in the work estimate. - -When using the decompressor's buffered-image mode, the progress monitor work -estimate is likely to be completely unhelpful, because the library has no way -to know how many output passes will be demanded of it. Currently, the library -sets total_passes based on the assumption that there will be one more output -pass if the input file end hasn't yet been read (jpeg_input_complete() isn't -TRUE), but no more output passes if the file end has been reached when the -output pass is started. This means that total_passes will rise as additional -output passes are requested. If you have a way of determining the input file -size, estimating progress based on the fraction of the file that's been read -will probably be more useful than using the library's value. - - -Memory management ------------------ - -This section covers some key facts about the JPEG library's built-in memory -manager. For more info, please read structure.doc's section about the memory -manager, and consult the source code if necessary. - -All memory and temporary file allocation within the library is done via the -memory manager. If necessary, you can replace the "back end" of the memory -manager to control allocation yourself (for example, if you don't want the -library to use malloc() and free() for some reason). - -Some data is allocated "permanently" and will not be freed until the JPEG -object is destroyed. Most data is allocated "per image" and is freed by -jpeg_finish_compress, jpeg_finish_decompress, or jpeg_abort. You can call the -memory manager yourself to allocate structures that will automatically be -freed at these times. Typical code for this is - ptr = (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, size); -Use JPOOL_PERMANENT to get storage that lasts as long as the JPEG object. -Use alloc_large instead of alloc_small for anything bigger than a few Kbytes. -There are also alloc_sarray and alloc_barray routines that automatically -build 2-D sample or block arrays. - -The library's minimum space requirements to process an image depend on the -image's width, but not on its height, because the library ordinarily works -with "strip" buffers that are as wide as the image but just a few rows high. -Some operating modes (eg, two-pass color quantization) require full-image -buffers. Such buffers are treated as "virtual arrays": only the current strip -need be in memory, and the rest can be swapped out to a temporary file. - -If you use the simplest memory manager back end (jmemnobs.c), then no -temporary files are used; virtual arrays are simply malloc()'d. Images bigger -than memory can be processed only if your system supports virtual memory. -The other memory manager back ends support temporary files of various flavors -and thus work in machines without virtual memory. They may also be useful on -Unix machines if you need to process images that exceed available swap space. - -When using temporary files, the library will make the in-memory buffers for -its virtual arrays just big enough to stay within a "maximum memory" setting. -Your application can set this limit by setting cinfo->mem->max_memory_to_use -after creating the JPEG object. (Of course, there is still a minimum size for -the buffers, so the max-memory setting is effective only if it is bigger than -the minimum space needed.) If you allocate any large structures yourself, you -must allocate them before jpeg_start_compress() or jpeg_start_decompress() in -order to have them counted against the max memory limit. Also keep in mind -that space allocated with alloc_small() is ignored, on the assumption that -it's too small to be worth worrying about; so a reasonable safety margin -should be left when setting max_memory_to_use. - -If you use the jmemname.c or jmemdos.c memory manager back end, it is -important to clean up the JPEG object properly to ensure that the temporary -files get deleted. (This is especially crucial with jmemdos.c, where the -"temporary files" may be extended-memory segments; if they are not freed, -DOS will require a reboot to recover the memory.) Thus, with these memory -managers, it's a good idea to provide a signal handler that will trap any -early exit from your program. The handler should call either jpeg_abort() -or jpeg_destroy() for any active JPEG objects. A handler is not needed with -jmemnobs.c, and shouldn't be necessary with jmemansi.c or jmemmac.c either, -since the C library is supposed to take care of deleting files made with -tmpfile(). - - -Memory usage ------------- - -Working memory requirements while performing compression or decompression -depend on image dimensions, image characteristics (such as colorspace and -JPEG process), and operating mode (application-selected options). - -As of v6b, the decompressor requires: - 1. About 24K in more-or-less-fixed-size data. This varies a bit depending - on operating mode and image characteristics (particularly color vs. - grayscale), but it doesn't depend on image dimensions. - 2. Strip buffers (of size proportional to the image width) for IDCT and - upsampling results. The worst case for commonly used sampling factors - is about 34 bytes * width in pixels for a color image. A grayscale image - only needs about 8 bytes per pixel column. - 3. A full-image DCT coefficient buffer is needed to decode a multi-scan JPEG - file (including progressive JPEGs), or whenever you select buffered-image - mode. This takes 2 bytes/coefficient. At typical 2x2 sampling, that's - 3 bytes per pixel for a color image. Worst case (1x1 sampling) requires - 6 bytes/pixel. For grayscale, figure 2 bytes/pixel. - 4. To perform 2-pass color quantization, the decompressor also needs a - 128K color lookup table and a full-image pixel buffer (3 bytes/pixel). -This does not count any memory allocated by the application, such as a -buffer to hold the final output image. - -The above figures are valid for 8-bit JPEG data precision and a machine with -32-bit ints. For 12-bit JPEG data, double the size of the strip buffers and -quantization pixel buffer. The "fixed-size" data will be somewhat smaller -with 16-bit ints, larger with 64-bit ints. Also, CMYK or other unusual -color spaces will require different amounts of space. - -The full-image coefficient and pixel buffers, if needed at all, do not -have to be fully RAM resident; you can have the library use temporary -files instead when the total memory usage would exceed a limit you set. -(But if your OS supports virtual memory, it's probably better to just use -jmemnobs and let the OS do the swapping.) - -The compressor's memory requirements are similar, except that it has no need -for color quantization. Also, it needs a full-image DCT coefficient buffer -if Huffman-table optimization is asked for, even if progressive mode is not -requested. - -If you need more detailed information about memory usage in a particular -situation, you can enable the MEM_STATS code in jmemmgr.c. - - -Library compile-time options ----------------------------- - -A number of compile-time options are available by modifying jmorecfg.h. - -The JPEG standard provides for both the baseline 8-bit DCT process and -a 12-bit DCT process. The IJG code supports 12-bit lossy JPEG if you define -BITS_IN_JSAMPLE as 12 rather than 8. Note that this causes JSAMPLE to be -larger than a char, so it affects the surrounding application's image data. -The sample applications cjpeg and djpeg can support 12-bit mode only for PPM -and GIF file formats; you must disable the other file formats to compile a -12-bit cjpeg or djpeg. (install.doc has more information about that.) -At present, a 12-bit library can handle *only* 12-bit images, not both -precisions. (If you need to include both 8- and 12-bit libraries in a single -application, you could probably do it by defining NEED_SHORT_EXTERNAL_NAMES -for just one of the copies. You'd have to access the 8-bit and 12-bit copies -from separate application source files. This is untested ... if you try it, -we'd like to hear whether it works!) - -Note that a 12-bit library always compresses in Huffman optimization mode, -in order to generate valid Huffman tables. This is necessary because our -default Huffman tables only cover 8-bit data. If you need to output 12-bit -files in one pass, you'll have to supply suitable default Huffman tables. -You may also want to supply your own DCT quantization tables; the existing -quality-scaling code has been developed for 8-bit use, and probably doesn't -generate especially good tables for 12-bit. - -The maximum number of components (color channels) in the image is determined -by MAX_COMPONENTS. The JPEG standard allows up to 255 components, but we -expect that few applications will need more than four or so. - -On machines with unusual data type sizes, you may be able to improve -performance or reduce memory space by tweaking the various typedefs in -jmorecfg.h. In particular, on some RISC CPUs, access to arrays of "short"s -is quite slow; consider trading memory for speed by making JCOEF, INT16, and -UINT16 be "int" or "unsigned int". UINT8 is also a candidate to become int. -You probably don't want to make JSAMPLE be int unless you have lots of memory -to burn. - -You can reduce the size of the library by compiling out various optional -functions. To do this, undefine xxx_SUPPORTED symbols as necessary. - -You can also save a few K by not having text error messages in the library; -the standard error message table occupies about 5Kb. This is particularly -reasonable for embedded applications where there's no good way to display -a message anyway. To do this, remove the creation of the message table -(jpeg_std_message_table[]) from jerror.c, and alter format_message to do -something reasonable without it. You could output the numeric value of the -message code number, for example. If you do this, you can also save a couple -more K by modifying the TRACEMSn() macros in jerror.h to expand to nothing; -you don't need trace capability anyway, right? - - -Portability considerations --------------------------- - -The JPEG library has been written to be extremely portable; the sample -applications cjpeg and djpeg are slightly less so. This section summarizes -the design goals in this area. (If you encounter any bugs that cause the -library to be less portable than is claimed here, we'd appreciate hearing -about them.) - -The code works fine on ANSI C, C++, and pre-ANSI C compilers, using any of -the popular system include file setups, and some not-so-popular ones too. -See install.doc for configuration procedures. - -The code is not dependent on the exact sizes of the C data types. As -distributed, we make the assumptions that - char is at least 8 bits wide - short is at least 16 bits wide - int is at least 16 bits wide - long is at least 32 bits wide -(These are the minimum requirements of the ANSI C standard.) Wider types will -work fine, although memory may be used inefficiently if char is much larger -than 8 bits or short is much bigger than 16 bits. The code should work -equally well with 16- or 32-bit ints. - -In a system where these assumptions are not met, you may be able to make the -code work by modifying the typedefs in jmorecfg.h. However, you will probably -have difficulty if int is less than 16 bits wide, since references to plain -int abound in the code. - -char can be either signed or unsigned, although the code runs faster if an -unsigned char type is available. If char is wider than 8 bits, you will need -to redefine JOCTET and/or provide custom data source/destination managers so -that JOCTET represents exactly 8 bits of data on external storage. - -The JPEG library proper does not assume ASCII representation of characters. -But some of the image file I/O modules in cjpeg/djpeg do have ASCII -dependencies in file-header manipulation; so does cjpeg's select_file_type() -routine. - -The JPEG library does not rely heavily on the C library. In particular, C -stdio is used only by the data source/destination modules and the error -handler, all of which are application-replaceable. (cjpeg/djpeg are more -heavily dependent on stdio.) malloc and free are called only from the memory -manager "back end" module, so you can use a different memory allocator by -replacing that one file. - -The code generally assumes that C names must be unique in the first 15 -characters. However, global function names can be made unique in the -first 6 characters by defining NEED_SHORT_EXTERNAL_NAMES. - -More info about porting the code may be gleaned by reading jconfig.doc, -jmorecfg.h, and jinclude.h. - - -Notes for MS-DOS implementors ------------------------------ - -The IJG code is designed to work efficiently in 80x86 "small" or "medium" -memory models (i.e., data pointers are 16 bits unless explicitly declared -"far"; code pointers can be either size). You may be able to use small -model to compile cjpeg or djpeg by itself, but you will probably have to use -medium model for any larger application. This won't make much difference in -performance. You *will* take a noticeable performance hit if you use a -large-data memory model (perhaps 10%-25%), and you should avoid "huge" model -if at all possible. - -The JPEG library typically needs 2Kb-3Kb of stack space. It will also -malloc about 20K-30K of near heap space while executing (and lots of far -heap, but that doesn't count in this calculation). This figure will vary -depending on selected operating mode, and to a lesser extent on image size. -There is also about 5Kb-6Kb of constant data which will be allocated in the -near data segment (about 4Kb of this is the error message table). -Thus you have perhaps 20K available for other modules' static data and near -heap space before you need to go to a larger memory model. The C library's -static data will account for several K of this, but that still leaves a good -deal for your needs. (If you are tight on space, you could reduce the sizes -of the I/O buffers allocated by jdatasrc.c and jdatadst.c, say from 4K to -1K. Another possibility is to move the error message table to far memory; -this should be doable with only localized hacking on jerror.c.) - -About 2K of the near heap space is "permanent" memory that will not be -released until you destroy the JPEG object. This is only an issue if you -save a JPEG object between compression or decompression operations. - -Far data space may also be a tight resource when you are dealing with large -images. The most memory-intensive case is decompression with two-pass color -quantization, or single-pass quantization to an externally supplied color -map. This requires a 128Kb color lookup table plus strip buffers amounting -to about 40 bytes per column for typical sampling ratios (eg, about 25600 -bytes for a 640-pixel-wide image). You may not be able to process wide -images if you have large data structures of your own. - -Of course, all of these concerns vanish if you use a 32-bit flat-memory-model -compiler, such as DJGPP or Watcom C. We highly recommend flat model if you -can use it; the JPEG library is significantly faster in flat model. diff --git a/project/jni/jpeg/ltconfig b/project/jni/jpeg/ltconfig deleted file mode 100755 index 2347e6943..000000000 --- a/project/jni/jpeg/ltconfig +++ /dev/null @@ -1,1512 +0,0 @@ -#! /bin/sh - -# ltconfig - Create a system-specific libtool. -# Copyright (C) 1996-1998 Free Software Foundation, Inc. -# Gordon Matzigkeit , 1996 -# -# This file is free software; you can redistribute it and/or modify it -# under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -# -# As a special exception to the GNU General Public License, if you -# distribute this file as part of a program that contains a -# configuration script generated by Autoconf, you may include it under -# the same distribution terms that you use for the rest of that program. - -# A lot of this script is taken from autoconf-2.10. - -# The HP-UX ksh and POSIX shell print the target directory to stdout -# if CDPATH is set. -if test "${CDPATH+set}" = set; then CDPATH=; export CDPATH; fi - -echo=echo -if test "X`($echo '\t') 2>/dev/null`" = 'X\t'; then : -else - # The Solaris and AIX default echo program unquotes backslashes. - # This makes it impossible to quote backslashes using - # echo "$something" | sed 's/\\/\\\\/g' - # So, we emulate echo with printf '%s\n' - echo="printf %s\\n" - if test "X`($echo '\t') 2>/dev/null`" = 'X\t'; then : - else - # Oops. 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Setzepfandt (bernd@gina.uni-muenster.de), -; and Guido Vollbeding (guivol@esc.de). -; -; To use this file, rename it to cjpeg.prj. -; If you are using Turbo C, change filenames beginning with "pc..." to "tc..." -; Read installation instructions before trying to make the program! -; -; -; * * * Output file * * * -cjpeg.ttp -; -; * * * COMPILER OPTIONS * * * -.C[-P] ; absolute calls -.C[-M] ; and no string merging, folks -.C[-w-cln] ; no "constant is long" warnings -.C[-w-par] ; no "parameter xxxx unused" -.C[-w-rch] ; no "unreachable code" -.C[-wsig] ; warn if significant digits may be lost -= -; * * * * List of modules * * * * -pcstart.o -cjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h) -cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdswitch.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdppm.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdgif.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdtarga.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdbmp.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdrle.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -libjpeg.lib ; built by libjpeg.prj -pcfltlib.lib ; floating point library -; the float library can be omitted if you've turned off DCT_FLOAT_SUPPORTED -pcstdlib.lib ; standard library -pcextlib.lib ; extended library diff --git a/project/jni/jpeg/makdjpeg.st b/project/jni/jpeg/makdjpeg.st deleted file mode 100644 index 322672631..000000000 --- a/project/jni/jpeg/makdjpeg.st +++ /dev/null @@ -1,38 +0,0 @@ -; Project file for Independent JPEG Group's software -; -; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C. -; Thanks to Frank Moehle (Frank.Moehle@arbi.informatik.uni-oldenburg.de), -; Dr. B. Setzepfandt (bernd@gina.uni-muenster.de), -; and Guido Vollbeding (guivol@esc.de). -; -; To use this file, rename it to djpeg.prj. -; If you are using Turbo C, change filenames beginning with "pc..." to "tc..." -; Read installation instructions before trying to make the program! -; -; -; * * * Output file * * * -djpeg.ttp -; -; * * * COMPILER OPTIONS * * * -.C[-P] ; absolute calls -.C[-M] ; and no string merging, folks -.C[-w-cln] ; no "constant is long" warnings -.C[-w-par] ; no "parameter xxxx unused" -.C[-w-rch] ; no "unreachable code" -.C[-wsig] ; warn if significant digits may be lost -= -; * * * * List of modules * * * * -pcstart.o -djpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,jversion.h) -cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdcolmap.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -wrppm.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -wrgif.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -wrtarga.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -wrbmp.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -wrrle.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -libjpeg.lib ; built by libjpeg.prj -pcfltlib.lib ; floating point library -; the float library can be omitted if you've turned off DCT_FLOAT_SUPPORTED -pcstdlib.lib ; standard library -pcextlib.lib ; extended library diff --git a/project/jni/jpeg/makeapps.ds b/project/jni/jpeg/makeapps.ds deleted file mode 100644 index bedd038a3..000000000 --- a/project/jni/jpeg/makeapps.ds +++ /dev/null @@ -1,828 +0,0 @@ -# Microsoft Developer Studio Generated NMAKE File, Format Version 4.20 -# ** DO NOT EDIT ** - -# TARGTYPE "Win32 (x86) Console Application" 0x0103 - -!IF "$(CFG)" == "" -CFG=cjpeg - Win32 -!MESSAGE No configuration specified. 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-SOURCE="wrbmp.c" -DEP_CPP_WRBMP=\ - "cdjpeg.h"\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jerror.h"\ - "cderror.h"\ - - -"$(INTDIR)\wrbmp.obj" : $(SOURCE) $(DEP_CPP_WRBMP) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -################################################################################ -# Begin Source File - -SOURCE="wrrle.c" -DEP_CPP_WRRLE=\ - "cdjpeg.h"\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jerror.h"\ - "cderror.h"\ - - -"$(INTDIR)\wrrle.obj" : $(SOURCE) $(DEP_CPP_WRRLE) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -# End Target -################################################################################ -# Begin Target - -# Name "jpegtran - Win32" - -!IF "$(CFG)" == "jpegtran - Win32" - -!ENDIF - -################################################################################ -# Begin Source File - -SOURCE="jpegtran.c" -DEP_CPP_JPEGT=\ - "cdjpeg.h"\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jerror.h"\ - "cderror.h"\ - "transupp.h"\ - "jversion.h"\ - - -"$(INTDIR)\jpegtran.obj" : $(SOURCE) $(DEP_CPP_JPEGT) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -################################################################################ -# Begin Source File - -SOURCE="cdjpeg.c" -DEP_CPP_CDJPE=\ - "cdjpeg.h"\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jerror.h"\ - "cderror.h"\ - - -"$(INTDIR)\cdjpeg.obj" : $(SOURCE) $(DEP_CPP_CDJPE) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -################################################################################ -# Begin Source File - -SOURCE="rdswitch.c" -DEP_CPP_RDSWI=\ - "cdjpeg.h"\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jerror.h"\ - "cderror.h"\ - - -"$(INTDIR)\rdswitch.obj" : $(SOURCE) $(DEP_CPP_RDSWI) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -################################################################################ -# Begin Source File - -SOURCE="transupp.c" -DEP_CPP_TRANS=\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jpegint.h"\ - "jerror.h"\ - "transupp.h"\ - - -"$(INTDIR)\transupp.obj" : $(SOURCE) $(DEP_CPP_TRANS) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -# End Target -################################################################################ -# Begin Target - -# Name "rdjpgcom - Win32" - -!IF "$(CFG)" == "rdjpgcom - Win32" - -!ENDIF - -################################################################################ -# Begin Source File - -SOURCE="rdjpgcom.c" -DEP_CPP_RDJPG=\ - "jinclude.h"\ - "jconfig.h"\ - - -"$(INTDIR)\rdjpgcom.obj" : $(SOURCE) $(DEP_CPP_RDJPG) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -# End Target -################################################################################ -# Begin Target - -# Name "wrjpgcom - Win32" - -!IF "$(CFG)" == "wrjpgcom - Win32" - -!ENDIF - -################################################################################ -# Begin Source File - -SOURCE="wrjpgcom.c" -DEP_CPP_WRJPG=\ - "jinclude.h"\ - "jconfig.h"\ - - -"$(INTDIR)\wrjpgcom.obj" : $(SOURCE) $(DEP_CPP_WRJPG) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -# End Target -# End Project -################################################################################ - diff --git a/project/jni/jpeg/makefile.ansi b/project/jni/jpeg/makefile.ansi deleted file mode 100644 index 829191359..000000000 --- a/project/jni/jpeg/makefile.ansi +++ /dev/null @@ -1,214 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is suitable for Unix-like systems with ANSI-capable compilers. -# If you have a non-ANSI compiler, makefile.unix is a better starting point. - -# Read installation instructions before saying "make" !! - -# The name of your C compiler: -CC= cc - -# You may need to adjust these cc options: -CFLAGS= -O -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. - -# Link-time cc options: -LDFLAGS= - -# To link any special libraries, add the necessary -l commands here. -LDLIBS= - -# Put here the object file name for the correct system-dependent memory -# manager file. For Unix this is usually jmemnobs.o, but you may want -# to use jmemansi.o or jmemname.o if you have limited swap space. -SYSDEPMEM= jmemnobs.o - -# miscellaneous OS-dependent stuff -# linker -LN= $(CC) -# file deletion command -RM= rm -f -# library (.a) file creation command -AR= ar rc -# second step in .a creation (use "touch" if not needed) -AR2= ranlib - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \ - jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \ - jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \ - jfdctint.o -# decompression library object files -DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \ - jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \ - jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \ - jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o -# These objectfiles are included in libjpeg.a -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ - cdjpeg.o -DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ - cdjpeg.o -TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o - - -all: libjpeg.a cjpeg djpeg jpegtran rdjpgcom wrjpgcom - -libjpeg.a: $(LIBOBJECTS) - $(RM) libjpeg.a - $(AR) libjpeg.a $(LIBOBJECTS) - $(AR2) libjpeg.a - -cjpeg: $(COBJECTS) libjpeg.a - $(LN) $(LDFLAGS) -o cjpeg $(COBJECTS) libjpeg.a $(LDLIBS) - -djpeg: $(DOBJECTS) libjpeg.a - $(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.a $(LDLIBS) - -jpegtran: $(TROBJECTS) libjpeg.a - $(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.a $(LDLIBS) - -rdjpgcom: rdjpgcom.o - $(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS) - -wrjpgcom: wrjpgcom.o - $(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.o $(LDLIBS) - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -clean: - $(RM) *.o cjpeg djpeg jpegtran libjpeg.a rdjpgcom wrjpgcom - $(RM) core testout* - -test: cjpeg djpeg jpegtran - $(RM) testout* - ./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - ./cjpeg -dct int -outfile testout.jpg testimg.ppm - ./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - ./jpegtran -outfile testoutt.jpg testprog.jpg - cmp testimg.ppm testout.ppm - cmp testimg.bmp testout.bmp - cmp testimg.jpg testout.jpg - cmp testimg.ppm testoutp.ppm - cmp testimgp.jpg testoutp.jpg - cmp testorig.jpg testoutt.jpg - - -jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makefile.bcc b/project/jni/jpeg/makefile.bcc deleted file mode 100644 index a1cfcde66..000000000 --- a/project/jni/jpeg/makefile.bcc +++ /dev/null @@ -1,285 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is suitable for Borland C on MS-DOS or OS/2. -# It works with Borland C++ for DOS, revision 3.0 or later, -# and has been tested with Borland C++ for OS/2. -# Watch out for optimization bugs in the OS/2 compilers --- see notes below! -# Thanks to Tom Wright and Ge' Weijers (original DOS) and -# Ken Porter (OS/2) for this file. - -# Read installation instructions before saying "make" !! - -# Are we under DOS or OS/2? -!if !$d(DOS) && !$d(OS2) -!if $d(__OS2__) -OS2=1 -!else -DOS=1 -!endif -!endif - -# The name of your C compiler: -CC= bcc - -# You may need to adjust these cc options: -!if $d(DOS) -CFLAGS= -O2 -mm -w-par -w-stu -w-ccc -w-rch -!else -CFLAGS= -O1 -w-par -w-stu -w-ccc -w-rch -!endif -# -O2 enables full code optimization (for pre-3.0 Borland C++, use -O -G -Z). -# -O2 is buggy in Borland OS/2 C++ revision 2.0, so use -O1 there for now. -# If you have Borland OS/2 C++ revision 1.0, use -O or no optimization at all. -# -mm selects medium memory model (near data, far code pointers; DOS only!) -# -w-par suppresses warnings about unused function parameters -# -w-stu suppresses warnings about incomplete structures -# -w-ccc suppresses warnings about compile-time-constant conditions -# -w-rch suppresses warnings about unreachable code -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. - -# Link-time cc options: -!if $d(DOS) -LDFLAGS= -mm -# memory model option here must match CFLAGS! -!else -LDFLAGS= -# -lai full-screen app -# -lc case-significant link -!endif - -# Put here the object file name for the correct system-dependent memory -# manager file. -# For DOS, we recommend jmemdos.c and jmemdosa.asm. -# For OS/2, we recommend jmemnobs.c (flat memory!) -# SYSDEPMEMLIB must list the same files with "+" signs for the librarian. -!if $d(DOS) -SYSDEPMEM= jmemdos.obj jmemdosa.obj -SYSDEPMEMLIB= +jmemdos.obj +jmemdosa.obj -!else -SYSDEPMEM= jmemnobs.obj -SYSDEPMEMLIB= +jmemnobs.obj -!endif - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \ - jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \ - jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \ - jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj -# decompression library object files -DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \ - jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \ - jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \ - jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \ - jquant1.obj jquant2.obj jdmerge.obj -# These objectfiles are included in libjpeg.lib -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ - rdswitch.obj cdjpeg.obj -DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ - rdcolmap.obj cdjpeg.obj -TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj - - -all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe - -libjpeg.lib: $(LIBOBJECTS) - - del libjpeg.lib - tlib libjpeg.lib /E /C @&&| -+jcapimin.obj +jcapistd.obj +jctrans.obj +jcparam.obj +jdatadst.obj & -+jcinit.obj +jcmaster.obj +jcmarker.obj +jcmainct.obj +jcprepct.obj & -+jccoefct.obj +jccolor.obj +jcsample.obj +jchuff.obj +jcphuff.obj & -+jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj +jfdctint.obj +jdapimin.obj & -+jdapistd.obj +jdtrans.obj +jdatasrc.obj +jdmaster.obj +jdinput.obj & -+jdmarker.obj +jdhuff.obj +jdphuff.obj +jdmainct.obj +jdcoefct.obj & -+jdpostct.obj +jddctmgr.obj +jidctfst.obj +jidctflt.obj +jidctint.obj & -+jidctred.obj +jdsample.obj +jdcolor.obj +jquant1.obj +jquant2.obj & -+jdmerge.obj +jcomapi.obj +jutils.obj +jerror.obj +jmemmgr.obj & -$(SYSDEPMEMLIB) -| - -cjpeg.exe: $(COBJECTS) libjpeg.lib - $(CC) $(LDFLAGS) -ecjpeg.exe $(COBJECTS) libjpeg.lib - -djpeg.exe: $(DOBJECTS) libjpeg.lib - $(CC) $(LDFLAGS) -edjpeg.exe $(DOBJECTS) libjpeg.lib - -jpegtran.exe: $(TROBJECTS) libjpeg.lib - $(CC) $(LDFLAGS) -ejpegtran.exe $(TROBJECTS) libjpeg.lib - -rdjpgcom.exe: rdjpgcom.c -!if $d(DOS) - $(CC) -ms -O rdjpgcom.c -!else - $(CC) $(CFLAGS) rdjpgcom.c -!endif - -# On DOS, wrjpgcom needs large model so it can malloc a 64K chunk -wrjpgcom.exe: wrjpgcom.c -!if $d(DOS) - $(CC) -ml -O wrjpgcom.c -!else - $(CC) $(CFLAGS) wrjpgcom.c -!endif - -# This "{}" syntax allows Borland Make to "batch" source files. -# In this way, each run of the compiler can build many modules. -.c.obj: - $(CC) $(CFLAGS) -c{ $<} - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -clean: - - del *.obj - - del libjpeg.lib - - del cjpeg.exe - - del djpeg.exe - - del jpegtran.exe - - del rdjpgcom.exe - - del wrjpgcom.exe - - del testout*.* - -test: cjpeg.exe djpeg.exe jpegtran.exe - - del testout*.* - djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - cjpeg -dct int -outfile testout.jpg testimg.ppm - djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - jpegtran -outfile testoutt.jpg testprog.jpg -!if $d(DOS) - fc /b testimg.ppm testout.ppm - fc /b testimg.bmp testout.bmp - fc /b testimg.jpg testout.jpg - fc /b testimg.ppm testoutp.ppm - fc /b testimgp.jpg testoutp.jpg - fc /b testorig.jpg testoutt.jpg -!else - echo n > n.tmp - comp testimg.ppm testout.ppm < n.tmp - comp testimg.bmp testout.bmp < n.tmp - comp testimg.jpg testout.jpg < n.tmp - comp testimg.ppm testoutp.ppm < n.tmp - comp testimgp.jpg testoutp.jpg < n.tmp - comp testorig.jpg testoutt.jpg < n.tmp - del n.tmp -!endif - - -jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.obj: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.obj: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -jmemdosa.obj: jmemdosa.asm - tasm /mx jmemdosa.asm diff --git a/project/jni/jpeg/makefile.cfg b/project/jni/jpeg/makefile.cfg deleted file mode 100644 index f25e42e3e..000000000 --- a/project/jni/jpeg/makefile.cfg +++ /dev/null @@ -1,319 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# makefile.cfg is edited by configure to produce a custom Makefile. - -# Read installation instructions before saying "make" !! - -# For compiling with source and object files in different directories. -srcdir = @srcdir@ -VPATH = @srcdir@ - -# Where to install the programs and man pages. -prefix = @prefix@ -exec_prefix = @exec_prefix@ -bindir = $(exec_prefix)/bin -libdir = $(exec_prefix)/lib -includedir = $(prefix)/include -binprefix = -manprefix = -manext = 1 -mandir = $(prefix)/man/man$(manext) - -# The name of your C compiler: -CC= @CC@ - -# You may need to adjust these cc options: -CFLAGS= @CFLAGS@ @CPPFLAGS@ @INCLUDEFLAGS@ -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. -# However, any special defines for ansi2knr.c may be included here: -ANSI2KNRFLAGS= @ANSI2KNRFLAGS@ - -# Link-time cc options: -LDFLAGS= @LDFLAGS@ - -# To link any special libraries, add the necessary -l commands here. -LDLIBS= @LIBS@ - -# If using GNU libtool, LIBTOOL references it; if not, LIBTOOL is empty. -LIBTOOL = @LIBTOOL@ -# $(O) expands to "lo" if using libtool, plain "o" if not. -# Similarly, $(A) expands to "la" or "a". -O = @O@ -A = @A@ - -# Library version ID; libtool uses this for the shared library version number. -# Note: we suggest this match the macro of the same name in jpeglib.h. -JPEG_LIB_VERSION = @JPEG_LIB_VERSION@ - -# Put here the object file name for the correct system-dependent memory -# manager file. For Unix this is usually jmemnobs.o, but you may want -# to use jmemansi.o or jmemname.o if you have limited swap space. -SYSDEPMEM= @MEMORYMGR@ - -# miscellaneous OS-dependent stuff -SHELL= /bin/sh -# linker -LN= @LN@ -# file deletion command -RM= rm -f -# directory creation command -MKDIR= mkdir -# library (.a) file creation command -AR= ar rc -# second step in .a creation (use "touch" if not needed) -AR2= @RANLIB@ -# installation program -INSTALL= @INSTALL@ -INSTALL_PROGRAM= @INSTALL_PROGRAM@ -INSTALL_LIB= @INSTALL_LIB@ -INSTALL_DATA= @INSTALL_DATA@ - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.$(O) jutils.$(O) jerror.$(O) jmemmgr.$(O) $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.$(O) jcapistd.$(O) jctrans.$(O) jcparam.$(O) \ - jdatadst.$(O) jcinit.$(O) jcmaster.$(O) jcmarker.$(O) jcmainct.$(O) \ - jcprepct.$(O) jccoefct.$(O) jccolor.$(O) jcsample.$(O) jchuff.$(O) \ - jcphuff.$(O) jcdctmgr.$(O) jfdctfst.$(O) jfdctflt.$(O) \ - jfdctint.$(O) -# decompression library object files -DLIBOBJECTS= jdapimin.$(O) jdapistd.$(O) jdtrans.$(O) jdatasrc.$(O) \ - jdmaster.$(O) jdinput.$(O) jdmarker.$(O) jdhuff.$(O) jdphuff.$(O) \ - jdmainct.$(O) jdcoefct.$(O) jdpostct.$(O) jddctmgr.$(O) \ - jidctfst.$(O) jidctflt.$(O) jidctint.$(O) jidctred.$(O) \ - jdsample.$(O) jdcolor.$(O) jquant1.$(O) jquant2.$(O) jdmerge.$(O) -# These objectfiles are included in libjpeg.a -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.$(O) rdppm.$(O) rdgif.$(O) rdtarga.$(O) rdrle.$(O) \ - rdbmp.$(O) rdswitch.$(O) cdjpeg.$(O) -DOBJECTS= djpeg.$(O) wrppm.$(O) wrgif.$(O) wrtarga.$(O) wrrle.$(O) \ - wrbmp.$(O) rdcolmap.$(O) cdjpeg.$(O) -TROBJECTS= jpegtran.$(O) rdswitch.$(O) cdjpeg.$(O) transupp.$(O) - - -all: @A2K_DEPS@ libjpeg.$(A) cjpeg djpeg jpegtran rdjpgcom wrjpgcom - -# Special compilation rules to support ansi2knr and libtool. -.SUFFIXES: .lo .la - -# How to compile with libtool. -@COM_LT@.c.lo: -@COM_LT@ $(LIBTOOL) --mode=compile $(CC) $(CFLAGS) -c $(srcdir)/$*.c - -# How to use ansi2knr, when not using libtool. -@COM_A2K@.c.o: -@COM_A2K@ ./ansi2knr $(srcdir)/$*.c knr/$*.c -@COM_A2K@ $(CC) $(CFLAGS) -c knr/$*.c -@COM_A2K@ $(RM) knr/$*.c - -# How to use ansi2knr AND libtool. -@COM_A2K@.c.lo: -@COM_A2K@ ./ansi2knr $(srcdir)/$*.c knr/$*.c -@COM_A2K@ $(LIBTOOL) --mode=compile $(CC) $(CFLAGS) -c knr/$*.c -@COM_A2K@ $(RM) knr/$*.c - -ansi2knr: ansi2knr.c - $(CC) $(CFLAGS) $(ANSI2KNRFLAGS) -o ansi2knr $(srcdir)/ansi2knr.c - $(MKDIR) knr - -# the library: - -# without libtool: -libjpeg.a: @A2K_DEPS@ $(LIBOBJECTS) - $(RM) libjpeg.a - $(AR) libjpeg.a $(LIBOBJECTS) - $(AR2) libjpeg.a - -# with libtool: -libjpeg.la: @A2K_DEPS@ $(LIBOBJECTS) - $(LIBTOOL) --mode=link $(CC) -o libjpeg.la $(LIBOBJECTS) \ - -rpath $(libdir) -version-info $(JPEG_LIB_VERSION) - -# sample programs: - -cjpeg: $(COBJECTS) libjpeg.$(A) - $(LN) $(LDFLAGS) -o cjpeg $(COBJECTS) libjpeg.$(A) $(LDLIBS) - -djpeg: $(DOBJECTS) libjpeg.$(A) - $(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.$(A) $(LDLIBS) - -jpegtran: $(TROBJECTS) libjpeg.$(A) - $(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.$(A) $(LDLIBS) - -rdjpgcom: rdjpgcom.$(O) - $(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.$(O) $(LDLIBS) - -wrjpgcom: wrjpgcom.$(O) - $(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.$(O) $(LDLIBS) - -# Installation rules: - -install: cjpeg djpeg jpegtran rdjpgcom wrjpgcom @FORCE_INSTALL_LIB@ - $(INSTALL_PROGRAM) cjpeg $(bindir)/$(binprefix)cjpeg - $(INSTALL_PROGRAM) djpeg $(bindir)/$(binprefix)djpeg - $(INSTALL_PROGRAM) jpegtran $(bindir)/$(binprefix)jpegtran - $(INSTALL_PROGRAM) rdjpgcom $(bindir)/$(binprefix)rdjpgcom - $(INSTALL_PROGRAM) wrjpgcom $(bindir)/$(binprefix)wrjpgcom - $(INSTALL_DATA) $(srcdir)/cjpeg.1 $(mandir)/$(manprefix)cjpeg.$(manext) - $(INSTALL_DATA) $(srcdir)/djpeg.1 $(mandir)/$(manprefix)djpeg.$(manext) - $(INSTALL_DATA) $(srcdir)/jpegtran.1 $(mandir)/$(manprefix)jpegtran.$(manext) - $(INSTALL_DATA) $(srcdir)/rdjpgcom.1 $(mandir)/$(manprefix)rdjpgcom.$(manext) - $(INSTALL_DATA) $(srcdir)/wrjpgcom.1 $(mandir)/$(manprefix)wrjpgcom.$(manext) - -install-lib: libjpeg.$(A) install-headers - $(INSTALL_LIB) libjpeg.$(A) $(libdir)/$(binprefix)libjpeg.$(A) - -install-headers: jconfig.h - $(INSTALL_DATA) jconfig.h $(includedir)/jconfig.h - $(INSTALL_DATA) $(srcdir)/jpeglib.h $(includedir)/jpeglib.h - $(INSTALL_DATA) $(srcdir)/jmorecfg.h $(includedir)/jmorecfg.h - $(INSTALL_DATA) $(srcdir)/jerror.h $(includedir)/jerror.h - -clean: - $(RM) *.o *.lo libjpeg.a libjpeg.la - $(RM) cjpeg djpeg jpegtran rdjpgcom wrjpgcom - $(RM) ansi2knr core testout* config.log config.status - $(RM) -r knr .libs _libs - -distclean: clean - $(RM) Makefile jconfig.h libtool config.cache - -test: cjpeg djpeg jpegtran - $(RM) testout* - ./djpeg -dct int -ppm -outfile testout.ppm $(srcdir)/testorig.jpg - ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp $(srcdir)/testorig.jpg - ./cjpeg -dct int -outfile testout.jpg $(srcdir)/testimg.ppm - ./djpeg -dct int -ppm -outfile testoutp.ppm $(srcdir)/testprog.jpg - ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg $(srcdir)/testimg.ppm - ./jpegtran -outfile testoutt.jpg $(srcdir)/testprog.jpg - cmp $(srcdir)/testimg.ppm testout.ppm - cmp $(srcdir)/testimg.bmp testout.bmp - cmp $(srcdir)/testimg.jpg testout.jpg - cmp $(srcdir)/testimg.ppm testoutp.ppm - cmp $(srcdir)/testimgp.jpg testoutp.jpg - cmp $(srcdir)/testorig.jpg testoutt.jpg - -check: test - -# Mistake catcher: - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -# GNU Make likes to know which target names are not really files to be made: -.PHONY: all install install-lib install-headers clean distclean test check - - -jcapimin.$(O): jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.$(O): jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.$(O): jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.$(O): jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.$(O): jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.$(O): jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.$(O): jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.$(O): jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.$(O): jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.$(O): jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.$(O): jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.$(O): jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.$(O): jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.$(O): jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.$(O): jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.$(O): jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.$(O): jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.$(O): jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.$(O): jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.$(O): jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.$(O): jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.$(O): jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.$(O): jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.$(O): jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.$(O): jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.$(O): jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.$(O): jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.$(O): jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.$(O): jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.$(O): jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.$(O): jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.$(O): jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.$(O): jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.$(O): jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.$(O): jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.$(O): jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.$(O): jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.$(O): jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.$(O): jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.$(O): jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.$(O): jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.$(O): jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.$(O): jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.$(O): jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.$(O): jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.$(O): jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.$(O): jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.$(O): jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.$(O): jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.$(O): jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.$(O): cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.$(O): djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.$(O): jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.$(O): rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.$(O): wrjpgcom.c jinclude.h jconfig.h -cdjpeg.$(O): cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.$(O): rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.$(O): rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.$(O): transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.$(O): rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.$(O): wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.$(O): rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.$(O): wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.$(O): rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.$(O): wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.$(O): rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.$(O): wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.$(O): rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.$(O): wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makefile.dj b/project/jni/jpeg/makefile.dj deleted file mode 100644 index f766d25e3..000000000 --- a/project/jni/jpeg/makefile.dj +++ /dev/null @@ -1,220 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is for DJGPP (Delorie's GNU C port on MS-DOS), v2.0 or later. -# Thanks to Frank J. Donahoe for this version. - -# Read installation instructions before saying "make" !! - -# The name of your C compiler: -CC= gcc - -# You may need to adjust these cc options: -CFLAGS= -O2 -Wall -I. -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. - -# Link-time cc options: -LDFLAGS= -s - -# To link any special libraries, add the necessary -l commands here. -LDLIBS= - -# Put here the object file name for the correct system-dependent memory -# manager file. For DJGPP this is usually jmemnobs.o, but you could -# use jmemname.o if you want to use named temp files instead of swap space. -SYSDEPMEM= jmemnobs.o - -# miscellaneous OS-dependent stuff -# linker -LN= $(CC) -# file deletion command -RM= del -# library (.a) file creation command -AR= ar rc -# second step in .a creation (use "touch" if not needed) -AR2= ranlib - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \ - jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \ - jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \ - jfdctint.o -# decompression library object files -DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \ - jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \ - jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \ - jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o -# These objectfiles are included in libjpeg.a -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ - cdjpeg.o -DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ - cdjpeg.o -TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o - - -all: libjpeg.a cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe - -libjpeg.a: $(LIBOBJECTS) - $(RM) libjpeg.a - $(AR) libjpeg.a $(LIBOBJECTS) - $(AR2) libjpeg.a - -cjpeg.exe: $(COBJECTS) libjpeg.a - $(LN) $(LDFLAGS) -o cjpeg.exe $(COBJECTS) libjpeg.a $(LDLIBS) - -djpeg.exe: $(DOBJECTS) libjpeg.a - $(LN) $(LDFLAGS) -o djpeg.exe $(DOBJECTS) libjpeg.a $(LDLIBS) - -jpegtran.exe: $(TROBJECTS) libjpeg.a - $(LN) $(LDFLAGS) -o jpegtran.exe $(TROBJECTS) libjpeg.a $(LDLIBS) - -rdjpgcom.exe: rdjpgcom.o - $(LN) $(LDFLAGS) -o rdjpgcom.exe rdjpgcom.o $(LDLIBS) - -wrjpgcom.exe: wrjpgcom.o - $(LN) $(LDFLAGS) -o wrjpgcom.exe wrjpgcom.o $(LDLIBS) - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -clean: - $(RM) *.o - $(RM) cjpeg.exe - $(RM) djpeg.exe - $(RM) jpegtran.exe - $(RM) rdjpgcom.exe - $(RM) wrjpgcom.exe - $(RM) libjpeg.a - $(RM) testout*.* - -test: cjpeg.exe djpeg.exe jpegtran.exe - $(RM) testout*.* - ./djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - ./djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - ./cjpeg -dct int -outfile testout.jpg testimg.ppm - ./djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - ./cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - ./jpegtran -outfile testoutt.jpg testprog.jpg - fc /b testimg.ppm testout.ppm - fc /b testimg.bmp testout.bmp - fc /b testimg.jpg testout.jpg - fc /b testimg.ppm testoutp.ppm - fc /b testimgp.jpg testoutp.jpg - fc /b testorig.jpg testoutt.jpg - - -jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makefile.manx b/project/jni/jpeg/makefile.manx deleted file mode 100644 index 4cb42d17c..000000000 --- a/project/jni/jpeg/makefile.manx +++ /dev/null @@ -1,214 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is for Amiga systems using Manx Aztec C ver 5.x. -# Thanks to D.J. James (djjames@cup.portal.com) for this version. - -# Read installation instructions before saying "make" !! - -# The name of your C compiler: -CC= cc - -# You may need to adjust these cc options: -# Uncomment for generic 68000 code (will work on any Amiga) -ARCHFLAGS= -sn - -# Uncomment for 68020/68030 code (faster, but won't run on 68000 CPU) -#ARCHFLAGS= -c2 - -CFLAGS= -MC -MD $(ARCHFLAGS) -spfam -r4 - -# Link-time cc options: -LDFLAGS= -g - -# To link any special libraries, add the necessary -l commands here. -LDLIBS= -lml -lcl - -# Put here the object file name for the correct system-dependent memory -# manager file. For Amiga we recommend jmemname.o. -SYSDEPMEM= jmemname.o - -# miscellaneous OS-dependent stuff -# linker -LN= ln -# file deletion command -RM= delete quiet -# library (.lib) file creation command -AR= lb - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \ - jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \ - jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \ - jfdctint.o -# decompression library object files -DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \ - jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \ - jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \ - jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o -# These objectfiles are included in libjpeg.lib -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ - cdjpeg.o -DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ - cdjpeg.o -TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o - - -all: libjpeg.lib cjpeg djpeg jpegtran rdjpgcom wrjpgcom - -libjpeg.lib: $(LIBOBJECTS) - -$(RM) libjpeg.lib - $(AR) libjpeg.lib $(LIBOBJECTS) - -cjpeg: $(COBJECTS) libjpeg.lib - $(LN) $(LDFLAGS) -o cjpeg $(COBJECTS) libjpeg.lib $(LDLIBS) - -djpeg: $(DOBJECTS) libjpeg.lib - $(LN) $(LDFLAGS) -o djpeg $(DOBJECTS) libjpeg.lib $(LDLIBS) - -jpegtran: $(TROBJECTS) libjpeg.lib - $(LN) $(LDFLAGS) -o jpegtran $(TROBJECTS) libjpeg.lib $(LDLIBS) - -rdjpgcom: rdjpgcom.o - $(LN) $(LDFLAGS) -o rdjpgcom rdjpgcom.o $(LDLIBS) - -wrjpgcom: wrjpgcom.o - $(LN) $(LDFLAGS) -o wrjpgcom wrjpgcom.o $(LDLIBS) - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -clean: - -$(RM) *.o cjpeg djpeg jpegtran libjpeg.lib rdjpgcom wrjpgcom - -$(RM) core testout*.* - -test: cjpeg djpeg jpegtran - -$(RM) testout*.* - djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - cjpeg -dct int -outfile testout.jpg testimg.ppm - djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - jpegtran -outfile testoutt.jpg testprog.jpg - cmp testimg.ppm testout.ppm - cmp testimg.bmp testout.bmp - cmp testimg.jpg testout.jpg - cmp testimg.ppm testoutp.ppm - cmp testimgp.jpg testoutp.jpg - cmp testorig.jpg testoutt.jpg - - -jcapimin.o: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.o: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.o: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.o: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.o: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.o: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.o: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.o: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.o: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.o: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.o: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.o: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.o: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.o: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.o: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.o: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.o: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.o: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.o: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.o: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.o: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.o: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.o: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.o: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.o: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.o: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.o: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.o: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.o: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.o: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.o: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.o: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.o: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.o: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.o: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.o: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.o: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.o: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.o: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.o: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.o: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.o: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.o: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.o: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.o: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.o: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.o: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.o: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.o: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.o: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.o: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.o: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.o: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.o: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.o: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.o: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.o: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.o: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.o: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.o: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.o: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.o: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.o: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.o: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.o: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.o: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.o: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.o: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.o: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makefile.mc6 b/project/jni/jpeg/makefile.mc6 deleted file mode 100644 index 6aff05464..000000000 --- a/project/jni/jpeg/makefile.mc6 +++ /dev/null @@ -1,249 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is for Microsoft C for MS-DOS, version 6.00A and up. -# Use NMAKE, not Microsoft's brain-damaged MAKE. -# Thanks to Alan Wright and Chris Turner of Olivetti Research Ltd. - -# Read installation instructions before saying "nmake" !! - -# You may need to adjust these compiler options: -CFLAGS = -AM -Oecigt -Gs -W3 -# -AM medium memory model (or use -AS for small model, if you remove features) -# -Oecigt -Gs maximum safe optimisation (-Ol has bugs in MSC 6.00A) -# -W3 warning level 3 -# You might also want to add -G2 if you have an 80286, etc. -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. - -# Jan-Herman Buining suggests the following switches for MS C 8.0 and a 486: -# CFLAGS = /AM /f- /FPi87 /G3 /Gs /Gy /Ob1 /Oc /Oe /Og /Oi /Ol /On /Oo /Ot \ -# /OV4 /W3 -# except for jquant1.c, which must be compiled with /Oo- to avoid a compiler -# crash. - -# Ingar Steinsland suggests the following switches when building -# a 16-bit Windows DLL: -# CFLAGS = -ALw -Gsw -Zpe -W3 -O2 -Zi -Zd - -# Put here the object file name for the correct system-dependent memory -# manager file. For DOS, we recommend jmemdos.c and jmemdosa.asm. -# (But not for Windows; see install.doc if you use this makefile for Windows.) -SYSDEPMEM= jmemdos.obj jmemdosa.obj -# SYSDEPMEMLIB must list the same files with "+" signs for the librarian. -SYSDEPMEMLIB= +jmemdos.obj +jmemdosa.obj - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \ - jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \ - jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \ - jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj -# decompression library object files -DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \ - jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \ - jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \ - jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \ - jquant1.obj jquant2.obj jdmerge.obj -# These objectfiles are included in libjpeg.lib -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ - rdswitch.obj cdjpeg.obj -DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ - rdcolmap.obj cdjpeg.obj -TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj - -# need linker response file because file list > 128 chars -RFILE = libjpeg.ans - - -all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe - -libjpeg.lib: $(LIBOBJECTS) $(RFILE) - del libjpeg.lib - lib @$(RFILE) - -# linker response file for building libjpeg.lib -$(RFILE) : makefile - del $(RFILE) - echo libjpeg.lib >$(RFILE) -# silly want-to-create-it prompt: - echo y >>$(RFILE) - echo +jcapimin.obj +jcapistd.obj +jctrans.obj +jcparam.obj & >>$(RFILE) - echo +jdatadst.obj +jcinit.obj +jcmaster.obj +jcmarker.obj & >>$(RFILE) - echo +jcmainct.obj +jcprepct.obj +jccoefct.obj & >>$(RFILE) - echo +jccolor.obj +jcsample.obj +jchuff.obj +jcphuff.obj & >>$(RFILE) - echo +jcdctmgr.obj +jfdctfst.obj +jfdctflt.obj & >>$(RFILE) - echo +jfdctint.obj +jdapimin.obj +jdapistd.obj & >>$(RFILE) - echo +jdtrans.obj +jdatasrc.obj +jdmaster.obj +jdinput.obj & >>$(RFILE) - echo +jdmarker.obj +jdhuff.obj +jdphuff.obj +jdmainct.obj & >>$(RFILE) - echo +jdcoefct.obj +jdpostct.obj +jddctmgr.obj & >>$(RFILE) - echo +jidctfst.obj +jidctflt.obj +jidctint.obj & >>$(RFILE) - echo +jidctred.obj +jdsample.obj +jdcolor.obj +jquant1.obj & >>$(RFILE) - echo +jquant2.obj +jdmerge.obj +jcomapi.obj +jutils.obj & >>$(RFILE) - echo +jerror.obj +jmemmgr.obj & >>$(RFILE) - echo $(SYSDEPMEMLIB) ; >>$(RFILE) - -cjpeg.exe: $(COBJECTS) libjpeg.lib - echo $(COBJECTS) >cjpeg.lst - link /STACK:4096 /EXEPACK @cjpeg.lst, cjpeg.exe, , libjpeg.lib, ; - del cjpeg.lst - -djpeg.exe: $(DOBJECTS) libjpeg.lib - echo $(DOBJECTS) >djpeg.lst - link /STACK:4096 /EXEPACK @djpeg.lst, djpeg.exe, , libjpeg.lib, ; - del djpeg.lst - -jpegtran.exe: $(TROBJECTS) libjpeg.lib - link /STACK:4096 /EXEPACK $(TROBJECTS), jpegtran.exe, , libjpeg.lib, ; - -rdjpgcom.exe: rdjpgcom.c - $(CC) -AS -O -W3 rdjpgcom.c - -# wrjpgcom needs large model so it can malloc a 64K chunk -wrjpgcom.exe: wrjpgcom.c - $(CC) -AL -O -W3 wrjpgcom.c - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -clean: - del *.obj - del libjpeg.lib - del cjpeg.exe - del djpeg.exe - del jpegtran.exe - del rdjpgcom.exe - del wrjpgcom.exe - del testout*.* - -test: cjpeg.exe djpeg.exe jpegtran.exe - del testout*.* - djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - cjpeg -dct int -outfile testout.jpg testimg.ppm - djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - jpegtran -outfile testoutt.jpg testprog.jpg - fc /b testimg.ppm testout.ppm - fc /b testimg.bmp testout.bmp - fc /b testimg.jpg testout.jpg - fc /b testimg.ppm testoutp.ppm - fc /b testimgp.jpg testoutp.jpg - fc /b testorig.jpg testoutt.jpg - - -jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.obj: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.obj: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -jmemdosa.obj : jmemdosa.asm - masm /mx $*; diff --git a/project/jni/jpeg/makefile.mms b/project/jni/jpeg/makefile.mms deleted file mode 100644 index cf130e5b9..000000000 --- a/project/jni/jpeg/makefile.mms +++ /dev/null @@ -1,218 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is for use with MMS on Digital VMS systems. -# Thanks to Rick Dyson (dyson@iowasp.physics.uiowa.edu) -# and Tim Bell (tbell@netcom.com) for their help. - -# Read installation instructions before saying "MMS" !! - -# You may need to adjust these cc options: -CFLAGS= $(CFLAGS) /NoDebug /Optimize -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via /Define switches here. -.ifdef ALPHA -OPT= -.else -OPT= ,Sys$Disk:[]MAKVMS.OPT/Option -.endif - -# Put here the object file name for the correct system-dependent memory -# manager file. For Unix this is usually jmemnobs.o, but you may want -# to use jmemansi.o or jmemname.o if you have limited swap space. -SYSDEPMEM= jmemnobs.obj - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \ - jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \ - jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \ - jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj -# decompression library object files -DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \ - jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \ - jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \ - jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \ - jquant1.obj jquant2.obj jdmerge.obj -# These objectfiles are included in libjpeg.olb -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ - rdswitch.obj cdjpeg.obj -DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ - rdcolmap.obj cdjpeg.obj -TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj -# objectfile lists with commas --- what a crock -COBJLIST= cjpeg.obj,rdppm.obj,rdgif.obj,rdtarga.obj,rdrle.obj,rdbmp.obj,\ - rdswitch.obj,cdjpeg.obj -DOBJLIST= djpeg.obj,wrppm.obj,wrgif.obj,wrtarga.obj,wrrle.obj,wrbmp.obj,\ - rdcolmap.obj,cdjpeg.obj -TROBJLIST= jpegtran.obj,rdswitch.obj,cdjpeg.obj,transupp.obj -LIBOBJLIST= jcapimin.obj,jcapistd.obj,jctrans.obj,jcparam.obj,jdatadst.obj,\ - jcinit.obj,jcmaster.obj,jcmarker.obj,jcmainct.obj,jcprepct.obj,\ - jccoefct.obj,jccolor.obj,jcsample.obj,jchuff.obj,jcphuff.obj,\ - jcdctmgr.obj,jfdctfst.obj,jfdctflt.obj,jfdctint.obj,jdapimin.obj,\ - jdapistd.obj,jdtrans.obj,jdatasrc.obj,jdmaster.obj,jdinput.obj,\ - jdmarker.obj,jdhuff.obj,jdphuff.obj,jdmainct.obj,jdcoefct.obj,\ - jdpostct.obj,jddctmgr.obj,jidctfst.obj,jidctflt.obj,jidctint.obj,\ - jidctred.obj,jdsample.obj,jdcolor.obj,jquant1.obj,jquant2.obj,\ - jdmerge.obj,jcomapi.obj,jutils.obj,jerror.obj,jmemmgr.obj,$(SYSDEPMEM) - - -.first - @- Define /NoLog Sys Sys$Library - -ALL : libjpeg.olb cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe - @ Continue - -libjpeg.olb : $(LIBOBJECTS) - Library /Create libjpeg.olb $(LIBOBJLIST) - -cjpeg.exe : $(COBJECTS) libjpeg.olb - $(LINK) $(LFLAGS) /Executable = cjpeg.exe $(COBJLIST),libjpeg.olb/Library$(OPT) - -djpeg.exe : $(DOBJECTS) libjpeg.olb - $(LINK) $(LFLAGS) /Executable = djpeg.exe $(DOBJLIST),libjpeg.olb/Library$(OPT) - -jpegtran.exe : $(TROBJECTS) libjpeg.olb - $(LINK) $(LFLAGS) /Executable = jpegtran.exe $(TROBJLIST),libjpeg.olb/Library$(OPT) - -rdjpgcom.exe : rdjpgcom.obj - $(LINK) $(LFLAGS) /Executable = rdjpgcom.exe rdjpgcom.obj$(OPT) - -wrjpgcom.exe : wrjpgcom.obj - $(LINK) $(LFLAGS) /Executable = wrjpgcom.exe wrjpgcom.obj$(OPT) - -jconfig.h : jconfig.vms - @- Copy jconfig.vms jconfig.h - -clean : - @- Set Protection = Owner:RWED *.*;-1 - @- Set Protection = Owner:RWED *.OBJ - - Purge /NoLog /NoConfirm *.* - - Delete /NoLog /NoConfirm *.OBJ; - -test : cjpeg.exe djpeg.exe jpegtran.exe - mcr sys$disk:[]djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - mcr sys$disk:[]djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - mcr sys$disk:[]cjpeg -dct int -outfile testout.jpg testimg.ppm - mcr sys$disk:[]djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - mcr sys$disk:[]cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - mcr sys$disk:[]jpegtran -outfile testoutt.jpg testprog.jpg - - Backup /Compare/Log testimg.ppm testout.ppm - - Backup /Compare/Log testimg.bmp testout.bmp - - Backup /Compare/Log testimg.jpg testout.jpg - - Backup /Compare/Log testimg.ppm testoutp.ppm - - Backup /Compare/Log testimgp.jpg testoutp.jpg - - Backup /Compare/Log testorig.jpg testoutt.jpg - - -jcapimin.obj : jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.obj : jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.obj : jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.obj : jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.obj : jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.obj : jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.obj : jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.obj : jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.obj : jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.obj : jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.obj : jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.obj : jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.obj : jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.obj : jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.obj : jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.obj : jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.obj : jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.obj : jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.obj : jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.obj : jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.obj : jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.obj : jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.obj : jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.obj : jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.obj : jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.obj : jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.obj : jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.obj : jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.obj : jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.obj : jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.obj : jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.obj : jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.obj : jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.obj : jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.obj : jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.obj : jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.obj : jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.obj : jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.obj : jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.obj : jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.obj : jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.obj : jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.obj : jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.obj : jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.obj : jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.obj : jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.obj : jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.obj : jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.obj : jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.obj : jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.obj : cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.obj : djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.obj : jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.obj : rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.obj : wrjpgcom.c jinclude.h jconfig.h -cdjpeg.obj : cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.obj : rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.obj : rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.obj : transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.obj : rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.obj : wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.obj : rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.obj : wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.obj : rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.obj : wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.obj : rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.obj : wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.obj : rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.obj : wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makefile.sas b/project/jni/jpeg/makefile.sas deleted file mode 100644 index f296faf06..000000000 --- a/project/jni/jpeg/makefile.sas +++ /dev/null @@ -1,252 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is for Amiga systems using SAS C 6.0 and up. -# Thanks to Ed Hanway, Mark Rinfret, and Jim Zepeda. - -# Read installation instructions before saying "make" !! - -# The name of your C compiler: -CC= sc - -# You may need to adjust these cc options: -# Uncomment the following lines for generic 680x0 version -ARCHFLAGS= cpu=any -SUFFIX= - -# Uncomment the following lines for 68030-only version -#ARCHFLAGS= cpu=68030 -#SUFFIX=.030 - -CFLAGS= nostackcheck data=near parms=register optimize $(ARCHFLAGS) \ - ignore=104 ignore=304 ignore=306 -# ignore=104 disables warnings for mismatched const qualifiers -# ignore=304 disables warnings for variables being optimized out -# ignore=306 disables warnings for the inlining of functions -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via define switches here. - -# Link-time cc options: -LDFLAGS= SC SD ND BATCH - -# To link any special libraries, add the necessary commands here. -LDLIBS= LIB:scm.lib LIB:sc.lib - -# Put here the object file name for the correct system-dependent memory -# manager file. For Amiga we recommend jmemname.o. -SYSDEPMEM= jmemname.o - -# miscellaneous OS-dependent stuff -# linker -LN= slink -# file deletion command -RM= delete quiet -# library (.lib) file creation command -AR= oml - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.o jutils.o jerror.o jmemmgr.o $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.o jcapistd.o jctrans.o jcparam.o jdatadst.o jcinit.o \ - jcmaster.o jcmarker.o jcmainct.o jcprepct.o jccoefct.o jccolor.o \ - jcsample.o jchuff.o jcphuff.o jcdctmgr.o jfdctfst.o jfdctflt.o \ - jfdctint.o -# decompression library object files -DLIBOBJECTS= jdapimin.o jdapistd.o jdtrans.o jdatasrc.o jdmaster.o \ - jdinput.o jdmarker.o jdhuff.o jdphuff.o jdmainct.o jdcoefct.o \ - jdpostct.o jddctmgr.o jidctfst.o jidctflt.o jidctint.o jidctred.o \ - jdsample.o jdcolor.o jquant1.o jquant2.o jdmerge.o -# These objectfiles are included in libjpeg.lib -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.o rdppm.o rdgif.o rdtarga.o rdrle.o rdbmp.o rdswitch.o \ - cdjpeg.o -DOBJECTS= djpeg.o wrppm.o wrgif.o wrtarga.o wrrle.o wrbmp.o rdcolmap.o \ - cdjpeg.o -TROBJECTS= jpegtran.o rdswitch.o cdjpeg.o transupp.o - - -all: libjpeg.lib cjpeg$(SUFFIX) djpeg$(SUFFIX) jpegtran$(SUFFIX) rdjpgcom$(SUFFIX) wrjpgcom$(SUFFIX) - -# note: do several AR steps to avoid command line length limitations - -libjpeg.lib: $(LIBOBJECTS) - -$(RM) libjpeg.lib - $(AR) libjpeg.lib r $(CLIBOBJECTS) - $(AR) libjpeg.lib r $(DLIBOBJECTS) - $(AR) libjpeg.lib r $(COMOBJECTS) - -cjpeg$(SUFFIX): $(COBJECTS) libjpeg.lib - $(LN) - -# You may want to adjust these compiler options: -CFLAGS= $(cflags) $(cdebug) $(cvars) -I. -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. - -# Link-time options: -LDFLAGS= $(ldebug) $(conlflags) - -# To link any special libraries, add the necessary commands here. -LDLIBS= $(conlibs) - -# Put here the object file name for the correct system-dependent memory -# manager file. For NT we suggest jmemnobs.obj, which expects the OS to -# provide adequate virtual memory. -SYSDEPMEM= jmemnobs.obj - -# miscellaneous OS-dependent stuff -# file deletion command -RM= del - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \ - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \ - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \ - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \ - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \ - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \ - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c \ - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c \ - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c \ - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h \ - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 \ - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc \ - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc \ - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds \ - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st \ - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms \ - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat \ - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas \ - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg \ - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) \ - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj \ - jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj \ - jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj \ - jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj -# decompression library object files -DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj \ - jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj \ - jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj \ - jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj \ - jquant1.obj jquant2.obj jdmerge.obj -# These objectfiles are included in libjpeg.lib -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj \ - rdswitch.obj cdjpeg.obj -DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj \ - rdcolmap.obj cdjpeg.obj -TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj - -# Template command for compiling .c to .obj -.c.obj: - $(cc) $(CFLAGS) $*.c - - -all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe - -libjpeg.lib: $(LIBOBJECTS) - $(RM) libjpeg.lib - lib -out:libjpeg.lib $(LIBOBJECTS) - -cjpeg.exe: $(COBJECTS) libjpeg.lib - $(link) $(LDFLAGS) -out:cjpeg.exe $(COBJECTS) libjpeg.lib $(LDLIBS) - -djpeg.exe: $(DOBJECTS) libjpeg.lib - $(link) $(LDFLAGS) -out:djpeg.exe $(DOBJECTS) libjpeg.lib $(LDLIBS) - -jpegtran.exe: $(TROBJECTS) libjpeg.lib - $(link) $(LDFLAGS) -out:jpegtran.exe $(TROBJECTS) libjpeg.lib $(LDLIBS) - -rdjpgcom.exe: rdjpgcom.obj - $(link) $(LDFLAGS) -out:rdjpgcom.exe rdjpgcom.obj $(LDLIBS) - -wrjpgcom.exe: wrjpgcom.obj - $(link) $(LDFLAGS) -out:wrjpgcom.exe wrjpgcom.obj $(LDLIBS) - - -clean: - $(RM) *.obj *.exe libjpeg.lib - $(RM) testout* - -test: cjpeg.exe djpeg.exe jpegtran.exe - $(RM) testout* - .\djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - .\djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - .\cjpeg -dct int -outfile testout.jpg testimg.ppm - .\djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - .\cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - .\jpegtran -outfile testoutt.jpg testprog.jpg - fc /b testimg.ppm testout.ppm - fc /b testimg.bmp testout.bmp - fc /b testimg.jpg testout.jpg - fc /b testimg.ppm testoutp.ppm - fc /b testimgp.jpg testoutp.jpg - fc /b testorig.jpg testoutt.jpg - - -jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.obj: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.obj: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makefile.vms b/project/jni/jpeg/makefile.vms deleted file mode 100644 index a42358d05..000000000 --- a/project/jni/jpeg/makefile.vms +++ /dev/null @@ -1,142 +0,0 @@ -$! Makefile for Independent JPEG Group's software -$! -$! This is a command procedure for Digital VMS systems that do not have MMS. -$! It builds the JPEG software by brute force, recompiling everything whether -$! or not it is necessary. It then runs the basic self-test. -$! Thanks to Rick Dyson (dyson@iowasp.physics.uiowa.edu) -$! and Tim Bell (tbell@netcom.com) for their help. -$! -$! Read installation instructions before running this!! -$! -$ If F$Mode () .eqs. "INTERACTIVE" -$ Then -$ VERIFY = F$Verify (0) -$ Else -$ VERIFY = F$Verify (1) -$ EndIf -$ On Control_Y Then GoTo End -$ On Error Then GoTo End -$ -$ If F$GetSyi ("HW_MODEL") .gt. 1023 -$ Then -$ OPT = "" -$ Else -$ OPT = ",Sys$Disk:[]makvms.opt/Option" -$ EndIf -$ -$ DoCompile := CC /NoDebug /Optimize /NoList -$! -$ DoCompile jcapimin.c -$ DoCompile jcapistd.c -$ DoCompile jctrans.c -$ DoCompile jcparam.c -$ DoCompile jdatadst.c -$ DoCompile jcinit.c -$ DoCompile jcmaster.c -$ DoCompile jcmarker.c -$ DoCompile jcmainct.c -$ DoCompile jcprepct.c -$ DoCompile jccoefct.c -$ DoCompile jccolor.c -$ DoCompile jcsample.c -$ DoCompile jchuff.c -$ DoCompile jcphuff.c -$ DoCompile jcdctmgr.c -$ DoCompile jfdctfst.c -$ DoCompile jfdctflt.c -$ DoCompile jfdctint.c -$ DoCompile jdapimin.c -$ DoCompile jdapistd.c -$ DoCompile jdtrans.c -$ DoCompile jdatasrc.c -$ DoCompile jdmaster.c -$ DoCompile jdinput.c -$ DoCompile jdmarker.c -$ DoCompile jdhuff.c -$ DoCompile jdphuff.c -$ DoCompile jdmainct.c -$ DoCompile jdcoefct.c -$ DoCompile jdpostct.c -$ DoCompile jddctmgr.c -$ DoCompile jidctfst.c -$ DoCompile jidctflt.c -$ DoCompile jidctint.c -$ DoCompile jidctred.c -$ DoCompile jdsample.c -$ DoCompile jdcolor.c -$ DoCompile jquant1.c -$ DoCompile jquant2.c -$ DoCompile jdmerge.c -$ DoCompile jcomapi.c -$ DoCompile jutils.c -$ DoCompile jerror.c -$ DoCompile jmemmgr.c -$ DoCompile jmemnobs.c -$! -$ Library /Create libjpeg.olb jcapimin.obj,jcapistd.obj,jctrans.obj, - - jcparam.obj,jdatadst.obj,jcinit.obj,jcmaster.obj,jcmarker.obj, - - jcmainct.obj,jcprepct.obj,jccoefct.obj,jccolor.obj,jcsample.obj, - - jchuff.obj,jcphuff.obj,jcdctmgr.obj,jfdctfst.obj,jfdctflt.obj, - - jfdctint.obj,jdapimin.obj,jdapistd.obj,jdtrans.obj,jdatasrc.obj, - - jdmaster.obj,jdinput.obj,jdmarker.obj,jdhuff.obj,jdphuff.obj, - - jdmainct.obj,jdcoefct.obj,jdpostct.obj,jddctmgr.obj,jidctfst.obj, - - jidctflt.obj,jidctint.obj,jidctred.obj,jdsample.obj,jdcolor.obj, - - jquant1.obj,jquant2.obj,jdmerge.obj,jcomapi.obj,jutils.obj, - - jerror.obj,jmemmgr.obj,jmemnobs.obj -$! -$ DoCompile cjpeg.c -$ DoCompile rdppm.c -$ DoCompile rdgif.c -$ DoCompile rdtarga.c -$ DoCompile rdrle.c -$ DoCompile rdbmp.c -$ DoCompile rdswitch.c -$ DoCompile cdjpeg.c -$! -$ Link /NoMap /Executable = cjpeg.exe cjpeg.obj,rdppm.obj,rdgif.obj, - - rdtarga.obj,rdrle.obj,rdbmp.obj,rdswitch.obj,cdjpeg.obj,libjpeg.olb/Library'OPT' -$! -$ DoCompile djpeg.c -$ DoCompile wrppm.c -$ DoCompile wrgif.c -$ DoCompile wrtarga.c -$ DoCompile wrrle.c -$ DoCompile wrbmp.c -$ DoCompile rdcolmap.c -$ DoCompile cdjpeg.c -$! -$ Link /NoMap /Executable = djpeg.exe djpeg.obj,wrppm.obj,wrgif.obj, - - wrtarga.obj,wrrle.obj,wrbmp.obj,rdcolmap.obj,cdjpeg.obj,libjpeg.olb/Library'OPT' -$! -$ DoCompile jpegtran.c -$ DoCompile rdswitch.c -$ DoCompile cdjpeg.c -$ DoCompile transupp.c -$! -$ Link /NoMap /Executable = jpegtran.exe jpegtran.obj,rdswitch.obj, - - cdjpeg.obj,transupp.obj,libjpeg.olb/Library'OPT' -$! -$ DoCompile rdjpgcom.c -$ Link /NoMap /Executable = rdjpgcom.exe rdjpgcom.obj'OPT' -$! -$ DoCompile wrjpgcom.c -$ Link /NoMap /Executable = wrjpgcom.exe wrjpgcom.obj'OPT' -$! -$! Run the self-test -$! -$ mcr sys$disk:[]djpeg -dct int -ppm -outfile testout.ppm testorig.jpg -$ mcr sys$disk:[]djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg -$ mcr sys$disk:[]cjpeg -dct int -outfile testout.jpg testimg.ppm -$ mcr sys$disk:[]djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg -$ mcr sys$disk:[]cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm -$ mcr sys$disk:[]jpegtran -outfile testoutt.jpg testprog.jpg -$ Backup /Compare/Log testimg.ppm testout.ppm -$ Backup /Compare/Log testimg.bmp testout.bmp -$ Backup /Compare/Log testimg.jpg testout.jpg -$ Backup /Compare/Log testimg.ppm testoutp.ppm -$ Backup /Compare/Log testimgp.jpg testoutp.jpg -$ Backup /Compare/Log testorig.jpg testoutt.jpg -$! -$End: -$ If Verify Then Set Verify -$ Exit diff --git a/project/jni/jpeg/makefile.wat b/project/jni/jpeg/makefile.wat deleted file mode 100644 index d953e466f..000000000 --- a/project/jni/jpeg/makefile.wat +++ /dev/null @@ -1,233 +0,0 @@ -# Makefile for Independent JPEG Group's software - -# This makefile is suitable for Watcom C/C++ 10.0 on MS-DOS (using -# dos4g extender), OS/2, and Windows NT console mode. -# Thanks to Janos Haide, jhaide@btrvtech.com. - -# Read installation instructions before saying "wmake" !! - -# Uncomment line for desired system -SYSTEM=DOS -#SYSTEM=OS2 -#SYSTEM=NT - -# The name of your C compiler: -CC= wcl386 - -# You may need to adjust these cc options: -CFLAGS= -4r -ort -wx -zq -bt=$(SYSTEM) -# Caution: avoid -ol or -ox; these generate bad code with 10.0 or 10.0a. -# Generally, we recommend defining any configuration symbols in jconfig.h, -# NOT via -D switches here. - -# Link-time cc options: -!ifeq SYSTEM DOS -LDFLAGS= -zq -l=dos4g -!else ifeq SYSTEM OS2 -LDFLAGS= -zq -l=os2v2 -!else ifeq SYSTEM NT -LDFLAGS= -zq -l=nt -!endif - -# Put here the object file name for the correct system-dependent memory -# manager file. jmemnobs should work fine for dos4g or OS/2 environment. -SYSDEPMEM= jmemnobs.obj - -# End of configurable options. - - -# source files: JPEG library proper -LIBSOURCES= jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c & - jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c & - jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c & - jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c & - jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c & - jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c & - jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jquant1.c & - jquant2.c jutils.c jmemmgr.c -# memmgr back ends: compile only one of these into a working library -SYSDEPSOURCES= jmemansi.c jmemname.c jmemnobs.c jmemdos.c jmemmac.c -# source files: cjpeg/djpeg/jpegtran applications, also rdjpgcom/wrjpgcom -APPSOURCES= cjpeg.c djpeg.c jpegtran.c rdjpgcom.c wrjpgcom.c cdjpeg.c & - rdcolmap.c rdswitch.c transupp.c rdppm.c wrppm.c rdgif.c wrgif.c & - rdtarga.c wrtarga.c rdbmp.c wrbmp.c rdrle.c wrrle.c -SOURCES= $(LIBSOURCES) $(SYSDEPSOURCES) $(APPSOURCES) -# files included by source files -INCLUDES= jchuff.h jdhuff.h jdct.h jerror.h jinclude.h jmemsys.h jmorecfg.h & - jpegint.h jpeglib.h jversion.h cdjpeg.h cderror.h transupp.h -# documentation, test, and support files -DOCS= README install.doc usage.doc cjpeg.1 djpeg.1 jpegtran.1 rdjpgcom.1 & - wrjpgcom.1 wizard.doc example.c libjpeg.doc structure.doc & - coderules.doc filelist.doc change.log -MKFILES= configure makefile.cfg makefile.ansi makefile.unix makefile.bcc & - makefile.mc6 makefile.dj makefile.wat makefile.vc makelib.ds & - makeapps.ds makeproj.mac makcjpeg.st makdjpeg.st makljpeg.st & - maktjpeg.st makefile.manx makefile.sas makefile.mms makefile.vms & - makvms.opt -CONFIGFILES= jconfig.cfg jconfig.bcc jconfig.mc6 jconfig.dj jconfig.wat & - jconfig.vc jconfig.mac jconfig.st jconfig.manx jconfig.sas & - jconfig.vms -CONFIGUREFILES= config.guess config.sub install-sh ltconfig ltmain.sh -OTHERFILES= jconfig.doc ckconfig.c ansi2knr.c ansi2knr.1 jmemdosa.asm -TESTFILES= testorig.jpg testimg.ppm testimg.bmp testimg.jpg testprog.jpg & - testimgp.jpg -DISTFILES= $(DOCS) $(MKFILES) $(CONFIGFILES) $(SOURCES) $(INCLUDES) & - $(CONFIGUREFILES) $(OTHERFILES) $(TESTFILES) -# library object files common to compression and decompression -COMOBJECTS= jcomapi.obj jutils.obj jerror.obj jmemmgr.obj $(SYSDEPMEM) -# compression library object files -CLIBOBJECTS= jcapimin.obj jcapistd.obj jctrans.obj jcparam.obj jdatadst.obj & - jcinit.obj jcmaster.obj jcmarker.obj jcmainct.obj jcprepct.obj & - jccoefct.obj jccolor.obj jcsample.obj jchuff.obj jcphuff.obj & - jcdctmgr.obj jfdctfst.obj jfdctflt.obj jfdctint.obj -# decompression library object files -DLIBOBJECTS= jdapimin.obj jdapistd.obj jdtrans.obj jdatasrc.obj & - jdmaster.obj jdinput.obj jdmarker.obj jdhuff.obj jdphuff.obj & - jdmainct.obj jdcoefct.obj jdpostct.obj jddctmgr.obj jidctfst.obj & - jidctflt.obj jidctint.obj jidctred.obj jdsample.obj jdcolor.obj & - jquant1.obj jquant2.obj jdmerge.obj -# These objectfiles are included in libjpeg.lib -LIBOBJECTS= $(CLIBOBJECTS) $(DLIBOBJECTS) $(COMOBJECTS) -# object files for sample applications (excluding library files) -COBJECTS= cjpeg.obj rdppm.obj rdgif.obj rdtarga.obj rdrle.obj rdbmp.obj & - rdswitch.obj cdjpeg.obj -DOBJECTS= djpeg.obj wrppm.obj wrgif.obj wrtarga.obj wrrle.obj wrbmp.obj & - rdcolmap.obj cdjpeg.obj -TROBJECTS= jpegtran.obj rdswitch.obj cdjpeg.obj transupp.obj - - -all: libjpeg.lib cjpeg.exe djpeg.exe jpegtran.exe rdjpgcom.exe wrjpgcom.exe - -libjpeg.lib: $(LIBOBJECTS) - - del libjpeg.lib - * wlib -n libjpeg.lib $(LIBOBJECTS) - -cjpeg.exe: $(COBJECTS) libjpeg.lib - $(CC) $(LDFLAGS) $(COBJECTS) libjpeg.lib - -djpeg.exe: $(DOBJECTS) libjpeg.lib - $(CC) $(LDFLAGS) $(DOBJECTS) libjpeg.lib - -jpegtran.exe: $(TROBJECTS) libjpeg.lib - $(CC) $(LDFLAGS) $(TROBJECTS) libjpeg.lib - -rdjpgcom.exe: rdjpgcom.c - $(CC) $(CFLAGS) $(LDFLAGS) rdjpgcom.c - -wrjpgcom.exe: wrjpgcom.c - $(CC) $(CFLAGS) $(LDFLAGS) wrjpgcom.c - -.c.obj: - $(CC) $(CFLAGS) -c $< - -jconfig.h: jconfig.doc - echo You must prepare a system-dependent jconfig.h file. - echo Please read the installation directions in install.doc. - exit 1 - -clean: .SYMBOLIC - - del *.obj - - del libjpeg.lib - - del cjpeg.exe - - del djpeg.exe - - del jpegtran.exe - - del rdjpgcom.exe - - del wrjpgcom.exe - - del testout*.* - -test: cjpeg.exe djpeg.exe jpegtran.exe .SYMBOLIC - - del testout*.* - djpeg -dct int -ppm -outfile testout.ppm testorig.jpg - djpeg -dct int -bmp -colors 256 -outfile testout.bmp testorig.jpg - cjpeg -dct int -outfile testout.jpg testimg.ppm - djpeg -dct int -ppm -outfile testoutp.ppm testprog.jpg - cjpeg -dct int -progressive -opt -outfile testoutp.jpg testimg.ppm - jpegtran -outfile testoutt.jpg testprog.jpg -!ifeq SYSTEM DOS - fc /b testimg.ppm testout.ppm - fc /b testimg.bmp testout.bmp - fc /b testimg.jpg testout.jpg - fc /b testimg.ppm testoutp.ppm - fc /b testimgp.jpg testoutp.jpg - fc /b testorig.jpg testoutt.jpg -!else - echo n > n.tmp - comp testimg.ppm testout.ppm < n.tmp - comp testimg.bmp testout.bmp < n.tmp - comp testimg.jpg testout.jpg < n.tmp - comp testimg.ppm testoutp.ppm < n.tmp - comp testimgp.jpg testoutp.jpg < n.tmp - comp testorig.jpg testoutt.jpg < n.tmp - del n.tmp -!endif - - -jcapimin.obj: jcapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcapistd.obj: jcapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccoefct.obj: jccoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jccolor.obj: jccolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcdctmgr.obj: jcdctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jchuff.obj: jchuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcinit.obj: jcinit.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmainct.obj: jcmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmarker.obj: jcmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcmaster.obj: jcmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcomapi.obj: jcomapi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcparam.obj: jcparam.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcphuff.obj: jcphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jchuff.h -jcprepct.obj: jcprepct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jcsample.obj: jcsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jctrans.obj: jctrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapimin.obj: jdapimin.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdapistd.obj: jdapistd.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdatadst.obj: jdatadst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdatasrc.obj: jdatasrc.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h -jdcoefct.obj: jdcoefct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdcolor.obj: jdcolor.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jddctmgr.obj: jddctmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jdhuff.obj: jdhuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdinput.obj: jdinput.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmainct.obj: jdmainct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmarker.obj: jdmarker.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmaster.obj: jdmaster.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdmerge.obj: jdmerge.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdphuff.obj: jdphuff.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdhuff.h -jdpostct.obj: jdpostct.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdsample.obj: jdsample.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jdtrans.obj: jdtrans.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jerror.obj: jerror.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jversion.h jerror.h -jfdctflt.obj: jfdctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctfst.obj: jfdctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jfdctint.obj: jfdctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctflt.obj: jidctflt.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctfst.obj: jidctfst.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctint.obj: jidctint.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jidctred.obj: jidctred.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jdct.h -jquant1.obj: jquant1.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jquant2.obj: jquant2.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jutils.obj: jutils.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h -jmemmgr.obj: jmemmgr.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemansi.obj: jmemansi.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemname.obj: jmemname.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemnobs.obj: jmemnobs.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemdos.obj: jmemdos.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -jmemmac.obj: jmemmac.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h jmemsys.h -cjpeg.obj: cjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -djpeg.obj: djpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h jversion.h -jpegtran.obj: jpegtran.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h transupp.h jversion.h -rdjpgcom.obj: rdjpgcom.c jinclude.h jconfig.h -wrjpgcom.obj: wrjpgcom.c jinclude.h jconfig.h -cdjpeg.obj: cdjpeg.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdcolmap.obj: rdcolmap.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdswitch.obj: rdswitch.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -transupp.obj: transupp.c jinclude.h jconfig.h jpeglib.h jmorecfg.h jpegint.h jerror.h transupp.h -rdppm.obj: rdppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrppm.obj: wrppm.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdgif.obj: rdgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrgif.obj: wrgif.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdtarga.obj: rdtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrtarga.obj: wrtarga.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdbmp.obj: rdbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrbmp.obj: wrbmp.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -rdrle.obj: rdrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h -wrrle.obj: wrrle.c cdjpeg.h jinclude.h jconfig.h jpeglib.h jmorecfg.h jerror.h cderror.h diff --git a/project/jni/jpeg/makelib.ds b/project/jni/jpeg/makelib.ds deleted file mode 100644 index c7ad36d09..000000000 --- a/project/jni/jpeg/makelib.ds +++ /dev/null @@ -1,1046 +0,0 @@ -# Microsoft Developer Studio Generated NMAKE File, Format Version 4.20 -# ** DO NOT EDIT ** - -# TARGTYPE "Win32 (x86) Static Library" 0x0104 - -!IF "$(CFG)" == "" -CFG=jpeg - Win32 -!MESSAGE No configuration specified. Defaulting to jpeg - Win32. -!ENDIF - -!IF "$(CFG)" != "jpeg - Win32" -!MESSAGE Invalid configuration "$(CFG)" specified. -!MESSAGE You can specify a configuration when running NMAKE on this makefile -!MESSAGE by defining the macro CFG on the command line. For example: -!MESSAGE -!MESSAGE NMAKE /f "jpeg.mak" CFG="jpeg - Win32" -!MESSAGE -!MESSAGE Possible choices for configuration are: -!MESSAGE -!MESSAGE "jpeg - Win32" (based on "Win32 (x86) Static Library") -!MESSAGE -!ERROR An invalid configuration is specified. -!ENDIF - -!IF "$(OS)" == "Windows_NT" -NULL= -!ELSE -NULL=nul -!ENDIF -################################################################################ -# Begin Project -# PROP Target_Last_Scanned "jpeg - Win32" -CPP=cl.exe - -!IF "$(CFG)" == "jpeg - Win32" - -# PROP BASE Use_MFC 0 -# PROP BASE Use_Debug_Libraries 0 -# PROP BASE Output_Dir "Release" -# PROP BASE Intermediate_Dir "Release" -# PROP BASE Target_Dir "" -# PROP Use_MFC 0 -# PROP Use_Debug_Libraries 0 -# PROP Output_Dir "Release" -# PROP Intermediate_Dir "Release" -# PROP Target_Dir "" -OUTDIR=.\Release -INTDIR=.\Release - -ALL : "$(OUTDIR)\jpeg.lib" - -CLEAN : - -@erase "$(INTDIR)\jcapimin.obj" - -@erase "$(INTDIR)\jcapistd.obj" - -@erase "$(INTDIR)\jctrans.obj" - 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-SOURCE="jmemmgr.c" -DEP_CPP_JMEMM=\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jpegint.h"\ - "jerror.h"\ - "jmemsys.h"\ - - -"$(INTDIR)\jmemmgr.obj" : $(SOURCE) $(DEP_CPP_JMEMM) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -################################################################################ -# Begin Source File - -SOURCE="jmemnobs.c" -DEP_CPP_JMEMN=\ - "jinclude.h"\ - "jconfig.h"\ - "jpeglib.h"\ - "jmorecfg.h"\ - "jpegint.h"\ - "jerror.h"\ - "jmemsys.h"\ - - -"$(INTDIR)\jmemnobs.obj" : $(SOURCE) $(DEP_CPP_JMEMN) "$(INTDIR)" - $(CPP) $(CPP_PROJ) $(SOURCE) - - -# End Source File -# End Target -# End Project -################################################################################ - diff --git a/project/jni/jpeg/makeproj.mac b/project/jni/jpeg/makeproj.mac deleted file mode 100644 index ed277c83d..000000000 --- a/project/jni/jpeg/makeproj.mac +++ /dev/null @@ -1,213 +0,0 @@ --- --- makeproj.mac --- --- This AppleScript builds Code Warrior PRO Release 2 project files for the --- libjpeg library as well as the test programs 'cjpeg', 'djpeg', 'jpegtran'. --- (We'd distribute real project files, except they're not text --- and would create maintenance headaches.) --- --- The script then compiles and links the library and the test programs. --- NOTE: if you haven't already created a 'jconfig.h' file, the script --- automatically copies 'jconfig.mac' to 'jconfig.h'. --- --- To use this script, you must have AppleScript 1.1 or later installed --- and a suitable AppleScript editor like Script Editor or Script Debugger --- (http://www.latenightsw.com). Open this file with your AppleScript --- editor and execute the "run" command to build the projects. --- --- Thanks to Dan Sears and Don Agro for this script. --- Questions about this script can be addressed to dogpark@interlog.com --- - -on run - - choose folder with prompt ">>> Select IJG source folder <<<" - set ijg_folder to result - - choose folder with prompt ">>> Select MetroWerks folder <<<" - set cw_folder to result - - -- if jconfig.h doesn't already exist, copy jconfig.mac - - tell application "Finder" - if not (exists file "jconfig.h" of ijg_folder) then - duplicate {file "jconfig.mac" of folder ijg_folder} - select file "jconfig.mac copy" of folder ijg_folder - set name of selection to "jconfig.h" - end if - end tell - - tell application "CodeWarrior IDE 2.1" - with timeout of 10000 seconds - - -- create libjpeg project - - activate - Create Project (ijg_folder as string) & "libjpeg.proj" - Set Preferences of panel "Target Settings" to {Target Name:"libjpeg"} - Set Preferences of panel "PPC Project" to {File Name:"libjpeg"} - Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} - Set Preferences of panel "PPC Project" to {Project Type:library} - Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} - Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} - Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} - Set Preferences of panel "PPC Linker" to {Generate SYM File:false} - - Add Files (ijg_folder as string) & "jcapimin.c" To Segment 1 - Add Files (ijg_folder as string) & "jcapistd.c" To Segment 1 - Add Files (ijg_folder as string) & "jctrans.c" To Segment 1 - Add Files (ijg_folder as string) & "jcparam.c" To Segment 1 - Add Files (ijg_folder as string) & "jdatadst.c" To Segment 1 - Add Files (ijg_folder as string) & "jcinit.c" To Segment 1 - Add Files (ijg_folder as string) & "jcmaster.c" To Segment 1 - Add Files (ijg_folder as string) & "jcmarker.c" To Segment 1 - Add Files (ijg_folder as string) & "jcmainct.c" To Segment 1 - Add Files (ijg_folder as string) & "jcprepct.c" To Segment 1 - Add Files (ijg_folder as string) & "jccoefct.c" To Segment 1 - Add Files (ijg_folder as string) & "jccolor.c" To Segment 1 - Add Files (ijg_folder as string) & "jcsample.c" To Segment 1 - Add Files (ijg_folder as string) & "jchuff.c" To Segment 1 - Add Files (ijg_folder as string) & "jcphuff.c" To Segment 1 - Add Files (ijg_folder as string) & "jcdctmgr.c" To Segment 1 - Add Files (ijg_folder as string) & "jfdctfst.c" To Segment 1 - Add Files (ijg_folder as string) & "jfdctflt.c" To Segment 1 - Add Files (ijg_folder as string) & "jfdctint.c" To Segment 1 - Add Files (ijg_folder as string) & "jdapimin.c" To Segment 1 - Add Files (ijg_folder as string) & "jdapistd.c" To Segment 1 - Add Files (ijg_folder as string) & "jdtrans.c" To Segment 1 - Add Files (ijg_folder as string) & "jdatasrc.c" To Segment 1 - Add Files (ijg_folder as string) & "jdmaster.c" To Segment 1 - Add Files (ijg_folder as string) & "jdinput.c" To Segment 1 - Add Files (ijg_folder as string) & "jdmarker.c" To Segment 1 - Add Files (ijg_folder as string) & "jdhuff.c" To Segment 1 - Add Files (ijg_folder as string) & "jdphuff.c" To Segment 1 - Add Files (ijg_folder as string) & "jdmainct.c" To Segment 1 - Add Files (ijg_folder as string) & "jdcoefct.c" To Segment 1 - Add Files (ijg_folder as string) & "jdpostct.c" To Segment 1 - Add Files (ijg_folder as string) & "jddctmgr.c" To Segment 1 - Add Files (ijg_folder as string) & "jidctfst.c" To Segment 1 - Add Files (ijg_folder as string) & "jidctflt.c" To Segment 1 - Add Files (ijg_folder as string) & "jidctint.c" To Segment 1 - Add Files (ijg_folder as string) & "jidctred.c" To Segment 1 - Add Files (ijg_folder as string) & "jdsample.c" To Segment 1 - Add Files (ijg_folder as string) & "jdcolor.c" To Segment 1 - Add Files (ijg_folder as string) & "jquant1.c" To Segment 1 - Add Files (ijg_folder as string) & "jquant2.c" To Segment 1 - Add Files (ijg_folder as string) & "jdmerge.c" To Segment 1 - Add Files (ijg_folder as string) & "jcomapi.c" To Segment 1 - Add Files (ijg_folder as string) & "jutils.c" To Segment 1 - Add Files (ijg_folder as string) & "jerror.c" To Segment 1 - Add Files (ijg_folder as string) & "jmemmgr.c" To Segment 1 - Add Files (ijg_folder as string) & "jmemmac.c" To Segment 1 - - -- compile and link the library - - Make Project - Close Project - - -- create cjpeg project - - activate - Create Project (ijg_folder as string) & "cjpeg.proj" - Set Preferences of panel "Target Settings" to {Target Name:"cjpeg"} - Set Preferences of panel "PPC Project" to {File Name:"cjpeg"} - Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} - Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} - Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} - Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} - Set Preferences of panel "PPC Linker" to {Generate SYM File:false} - - Add Files (ijg_folder as string) & "cjpeg.c" To Segment 1 - Add Files (ijg_folder as string) & "rdppm.c" To Segment 1 - Add Files (ijg_folder as string) & "rdgif.c" To Segment 1 - Add Files (ijg_folder as string) & "rdtarga.c" To Segment 1 - Add Files (ijg_folder as string) & "rdrle.c" To Segment 1 - Add Files (ijg_folder as string) & "rdbmp.c" To Segment 1 - Add Files (ijg_folder as string) & "rdswitch.c" To Segment 1 - Add Files (ijg_folder as string) & "cdjpeg.c" To Segment 1 - - Add Files (ijg_folder as string) & "libjpeg" To Segment 2 - - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL C.PPC.Lib" To Segment 3 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL SIOUX.PPC.Lib" To Segment 3 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:Runtime:Runtime PPC:MSL RuntimePPC.Lib" To Segment 3 - - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:InterfaceLib" To Segment 4 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:MathLib" To Segment 4 - - -- compile and link cjpeg - - Make Project - Close Project - - -- create djpeg project - - activate - Create Project (ijg_folder as string) & "djpeg.proj" - Set Preferences of panel "Target Settings" to {Target Name:"djpeg"} - Set Preferences of panel "PPC Project" to {File Name:"djpeg"} - Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} - Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} - Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} - Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} - Set Preferences of panel "PPC Linker" to {Generate SYM File:false} - - Add Files (ijg_folder as string) & "djpeg.c" To Segment 1 - Add Files (ijg_folder as string) & "wrppm.c" To Segment 1 - Add Files (ijg_folder as string) & "wrgif.c" To Segment 1 - Add Files (ijg_folder as string) & "wrtarga.c" To Segment 1 - Add Files (ijg_folder as string) & "wrrle.c" To Segment 1 - Add Files (ijg_folder as string) & "wrbmp.c" To Segment 1 - Add Files (ijg_folder as string) & "rdcolmap.c" To Segment 1 - Add Files (ijg_folder as string) & "cdjpeg.c" To Segment 1 - - Add Files (ijg_folder as string) & "libjpeg" To Segment 2 - - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL C.PPC.Lib" To Segment 3 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL SIOUX.PPC.Lib" To Segment 3 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:Runtime:Runtime PPC:MSL RuntimePPC.Lib" To Segment 3 - - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:InterfaceLib" To Segment 4 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:MathLib" To Segment 4 - - -- compile and link djpeg - - Make Project - Close Project - - -- create jpegtran project - - activate - Create Project (ijg_folder as string) & "jpegtran.proj" - Set Preferences of panel "Target Settings" to {Target Name:"jpegtran"} - Set Preferences of panel "PPC Project" to {File Name:"jpegtran"} - Set Preferences of panel "Target Settings" to {Linker:"MacOS PPC Linker"} - Set Preferences of panel "C/C++ Compiler" to {ANSI Strict:true} - Set Preferences of panel "C/C++ Compiler" to {Enums Always Ints:true} - Set Preferences of panel "PPC Codegen" to {Struct Alignment:PowerPC} - Set Preferences of panel "PPC Linker" to {Generate SYM File:false} - - Add Files (ijg_folder as string) & "jpegtran.c" To Segment 1 - Add Files (ijg_folder as string) & "rdswitch.c" To Segment 1 - Add Files (ijg_folder as string) & "cdjpeg.c" To Segment 1 - Add Files (ijg_folder as string) & "transupp.c" To Segment 1 - - Add Files (ijg_folder as string) & "libjpeg" To Segment 2 - - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL C.PPC.Lib" To Segment 3 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:Metrowerks Standard Library:MSL C:Bin:MSL SIOUX.PPC.Lib" To Segment 3 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:Runtime:Runtime PPC:MSL RuntimePPC.Lib" To Segment 3 - - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:InterfaceLib" To Segment 4 - Add Files (cw_folder as string) & "Metrowerks CodeWarrior:MacOS Support:Libraries:MacOS Common:MathLib" To Segment 4 - - -- compile and link jpegtran - - Make Project - Close Project - - quit - - end timeout - end tell -end run diff --git a/project/jni/jpeg/makljpeg.st b/project/jni/jpeg/makljpeg.st deleted file mode 100644 index 813493ea8..000000000 --- a/project/jni/jpeg/makljpeg.st +++ /dev/null @@ -1,70 +0,0 @@ -; Project file for Independent JPEG Group's software -; -; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C. -; Thanks to Frank Moehle (Frank.Moehle@arbi.informatik.uni-oldenburg.de), -; Dr. B. Setzepfandt (bernd@gina.uni-muenster.de), -; and Guido Vollbeding (guivol@esc.de). -; -; To use this file, rename it to libjpeg.prj. -; Read installation instructions before trying to make the program! -; -; -; * * * Output file * * * -libjpeg.lib -; -; * * * COMPILER OPTIONS * * * -.C[-P] ; absolute calls -.C[-M] ; and no string merging, folks -.C[-w-cln] ; no "constant is long" warnings -.C[-w-par] ; no "parameter xxxx unused" -.C[-w-rch] ; no "unreachable code" -.C[-wsig] ; warn if significant digits may be lost -.L[-J] ; link new Obj-format (so we get a library) -= -; * * * * List of modules * * * * -jcapimin.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcapistd.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jccoefct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jccolor.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcdctmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jchuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jchuff.h) -jcinit.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcmainct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcmarker.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcmaster.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcomapi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcparam.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcphuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jchuff.h) -jcprepct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jcsample.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jctrans.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdapimin.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdapistd.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdatadst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h) -jdatasrc.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h) -jdcoefct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdcolor.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jddctmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jdhuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdhuff.h) -jdinput.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdmainct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdmarker.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdmaster.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdmerge.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdphuff.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdhuff.h) -jdpostct.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdsample.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jdtrans.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jerror.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jversion.h,jerror.h) -jfdctflt.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jfdctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jfdctint.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jidctflt.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jidctfst.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jidctint.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jidctred.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jdct.h) -jquant1.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jquant2.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jutils.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h) -jmemmgr.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jmemsys.h) -jmemansi.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,jmemsys.h) diff --git a/project/jni/jpeg/maktjpeg.st b/project/jni/jpeg/maktjpeg.st deleted file mode 100644 index 31f4d169c..000000000 --- a/project/jni/jpeg/maktjpeg.st +++ /dev/null @@ -1,32 +0,0 @@ -; Project file for Independent JPEG Group's software -; -; This project file is for Atari ST/STE/TT systems using Pure C or Turbo C. -; Thanks to Frank Moehle (Frank.Moehle@arbi.informatik.uni-oldenburg.de), -; Dr. B. Setzepfandt (bernd@gina.uni-muenster.de), -; and Guido Vollbeding (guivol@esc.de). -; -; To use this file, rename it to jpegtran.prj. -; If you are using Turbo C, change filenames beginning with "pc..." to "tc..." -; Read installation instructions before trying to make the program! -; -; -; * * * Output file * * * -jpegtran.ttp -; -; * * * COMPILER OPTIONS * * * -.C[-P] ; absolute calls -.C[-M] ; and no string merging, folks -.C[-w-cln] ; no "constant is long" warnings -.C[-w-par] ; no "parameter xxxx unused" -.C[-w-rch] ; no "unreachable code" -.C[-wsig] ; warn if significant digits may be lost -= -; * * * * List of modules * * * * -pcstart.o -jpegtran.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h,transupp.h,jversion.h) -cdjpeg.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -rdswitch.c (cdjpeg.h,jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jerror.h,cderror.h) -transupp.c (jinclude.h,jconfig.h,jpeglib.h,jmorecfg.h,jpegint.h,jerror.h,transupp.h) -libjpeg.lib ; built by libjpeg.prj -pcstdlib.lib ; standard library -pcextlib.lib ; extended library diff --git a/project/jni/jpeg/makvms.opt b/project/jni/jpeg/makvms.opt deleted file mode 100644 index 675e8fe98..000000000 --- a/project/jni/jpeg/makvms.opt +++ /dev/null @@ -1,4 +0,0 @@ -! A pointer to the VAX/VMS C Run-Time Shareable Library. -! This file is needed by makefile.mms and makefile.vms, -! but only for the older VAX C compiler. DEC C does not need it. -Sys$Library:VAXCRTL.EXE /Share diff --git a/project/jni/jpeg/rdbmp.c b/project/jni/jpeg/rdbmp.c deleted file mode 100644 index b05fe2ac4..000000000 --- a/project/jni/jpeg/rdbmp.c +++ /dev/null @@ -1,439 +0,0 @@ -/* - * rdbmp.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to read input images in Microsoft "BMP" - * format (MS Windows 3.x, OS/2 1.x, and OS/2 2.x flavors). - * Currently, only 8-bit and 24-bit images are supported, not 1-bit or - * 4-bit (feeding such low-depth images into JPEG would be silly anyway). - * Also, we don't support RLE-compressed files. - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume input from - * an ordinary stdio stream. They further assume that reading begins - * at the start of the file; start_input may need work if the - * user interface has already read some data (e.g., to determine that - * the file is indeed BMP format). - * - * This code contributed by James Arthur Boucher. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef BMP_SUPPORTED - - -/* Macros to deal with unsigned chars as efficiently as compiler allows */ - -#ifdef HAVE_UNSIGNED_CHAR -typedef unsigned char U_CHAR; -#define UCH(x) ((int) (x)) -#else /* !HAVE_UNSIGNED_CHAR */ -#ifdef CHAR_IS_UNSIGNED -typedef char U_CHAR; -#define UCH(x) ((int) (x)) -#else -typedef char U_CHAR; -#define UCH(x) ((int) (x) & 0xFF) -#endif -#endif /* HAVE_UNSIGNED_CHAR */ - - -#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) - - -/* Private version of data source object */ - -typedef struct _bmp_source_struct * bmp_source_ptr; - -typedef struct _bmp_source_struct { - struct cjpeg_source_struct pub; /* public fields */ - - j_compress_ptr cinfo; /* back link saves passing separate parm */ - - JSAMPARRAY colormap; /* BMP colormap (converted to my format) */ - - jvirt_sarray_ptr whole_image; /* Needed to reverse row order */ - JDIMENSION source_row; /* Current source row number */ - JDIMENSION row_width; /* Physical width of scanlines in file */ - - int bits_per_pixel; /* remembers 8- or 24-bit format */ -} bmp_source_struct; - - -LOCAL(int) -read_byte (bmp_source_ptr sinfo) -/* Read next byte from BMP file */ -{ - register FILE *infile = sinfo->pub.input_file; - register int c; - - if ((c = getc(infile)) == EOF) - ERREXIT(sinfo->cinfo, JERR_INPUT_EOF); - return c; -} - - -LOCAL(void) -read_colormap (bmp_source_ptr sinfo, int cmaplen, int mapentrysize) -/* Read the colormap from a BMP file */ -{ - int i; - - switch (mapentrysize) { - case 3: - /* BGR format (occurs in OS/2 files) */ - for (i = 0; i < cmaplen; i++) { - sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); - sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); - sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); - } - break; - case 4: - /* BGR0 format (occurs in MS Windows files) */ - for (i = 0; i < cmaplen; i++) { - sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); - sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); - sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); - (void) read_byte(sinfo); - } - break; - default: - ERREXIT(sinfo->cinfo, JERR_BMP_BADCMAP); - break; - } -} - - -/* - * Read one row of pixels. - * The image has been read into the whole_image array, but is otherwise - * unprocessed. We must read it out in top-to-bottom row order, and if - * it is an 8-bit image, we must expand colormapped pixels to 24bit format. - */ - -METHODDEF(JDIMENSION) -get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading 8-bit colormap indexes */ -{ - bmp_source_ptr source = (bmp_source_ptr) sinfo; - register JSAMPARRAY colormap = source->colormap; - JSAMPARRAY image_ptr; - register int t; - register JSAMPROW inptr, outptr; - register JDIMENSION col; - - /* Fetch next row from virtual array */ - source->source_row--; - image_ptr = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->whole_image, - source->source_row, (JDIMENSION) 1, FALSE); - - /* Expand the colormap indexes to real data */ - inptr = image_ptr[0]; - outptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - t = GETJSAMPLE(*inptr++); - *outptr++ = colormap[0][t]; /* can omit GETJSAMPLE() safely */ - *outptr++ = colormap[1][t]; - *outptr++ = colormap[2][t]; - } - - return 1; -} - - -METHODDEF(JDIMENSION) -get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading 24-bit pixels */ -{ - bmp_source_ptr source = (bmp_source_ptr) sinfo; - JSAMPARRAY image_ptr; - register JSAMPROW inptr, outptr; - register JDIMENSION col; - - /* Fetch next row from virtual array */ - source->source_row--; - image_ptr = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->whole_image, - source->source_row, (JDIMENSION) 1, FALSE); - - /* Transfer data. Note source values are in BGR order - * (even though Microsoft's own documents say the opposite). - */ - inptr = image_ptr[0]; - outptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ - outptr[1] = *inptr++; - outptr[0] = *inptr++; - outptr += 3; - } - - return 1; -} - - -/* - * This method loads the image into whole_image during the first call on - * get_pixel_rows. The get_pixel_rows pointer is then adjusted to call - * get_8bit_row or get_24bit_row on subsequent calls. - */ - -METHODDEF(JDIMENSION) -preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - bmp_source_ptr source = (bmp_source_ptr) sinfo; - register FILE *infile = source->pub.input_file; - register int c; - register JSAMPROW out_ptr; - JSAMPARRAY image_ptr; - JDIMENSION row, col; - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; - - /* Read the data into a virtual array in input-file row order. */ - for (row = 0; row < cinfo->image_height; row++) { - if (progress != NULL) { - progress->pub.pass_counter = (long) row; - progress->pub.pass_limit = (long) cinfo->image_height; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } - image_ptr = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->whole_image, - row, (JDIMENSION) 1, TRUE); - out_ptr = image_ptr[0]; - for (col = source->row_width; col > 0; col--) { - /* inline copy of read_byte() for speed */ - if ((c = getc(infile)) == EOF) - ERREXIT(cinfo, JERR_INPUT_EOF); - *out_ptr++ = (JSAMPLE) c; - } - } - if (progress != NULL) - progress->completed_extra_passes++; - - /* Set up to read from the virtual array in top-to-bottom order */ - switch (source->bits_per_pixel) { - case 8: - source->pub.get_pixel_rows = get_8bit_row; - break; - case 24: - source->pub.get_pixel_rows = get_24bit_row; - break; - default: - ERREXIT(cinfo, JERR_BMP_BADDEPTH); - } - source->source_row = cinfo->image_height; - - /* And read the first row */ - return (*source->pub.get_pixel_rows) (cinfo, sinfo); -} - - -/* - * Read the file header; return image size and component count. - */ - -METHODDEF(void) -start_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - bmp_source_ptr source = (bmp_source_ptr) sinfo; - U_CHAR bmpfileheader[14]; - U_CHAR bmpinfoheader[64]; -#define GET_2B(array,offset) ((unsigned int) UCH(array[offset]) + \ - (((unsigned int) UCH(array[offset+1])) << 8)) -#define GET_4B(array,offset) ((INT32) UCH(array[offset]) + \ - (((INT32) UCH(array[offset+1])) << 8) + \ - (((INT32) UCH(array[offset+2])) << 16) + \ - (((INT32) UCH(array[offset+3])) << 24)) - INT32 bfOffBits; - INT32 headerSize; - INT32 biWidth = 0; /* initialize to avoid compiler warning */ - INT32 biHeight = 0; - unsigned int biPlanes; - INT32 biCompression; - INT32 biXPelsPerMeter,biYPelsPerMeter; - INT32 biClrUsed = 0; - int mapentrysize = 0; /* 0 indicates no colormap */ - INT32 bPad; - JDIMENSION row_width; - - /* Read and verify the bitmap file header */ - if (! ReadOK(source->pub.input_file, bmpfileheader, 14)) - ERREXIT(cinfo, JERR_INPUT_EOF); - if (GET_2B(bmpfileheader,0) != 0x4D42) /* 'BM' */ - ERREXIT(cinfo, JERR_BMP_NOT); - bfOffBits = (INT32) GET_4B(bmpfileheader,10); - /* We ignore the remaining fileheader fields */ - - /* The infoheader might be 12 bytes (OS/2 1.x), 40 bytes (Windows), - * or 64 bytes (OS/2 2.x). Check the first 4 bytes to find out which. - */ - if (! ReadOK(source->pub.input_file, bmpinfoheader, 4)) - ERREXIT(cinfo, JERR_INPUT_EOF); - headerSize = (INT32) GET_4B(bmpinfoheader,0); - if (headerSize < 12 || headerSize > 64) - ERREXIT(cinfo, JERR_BMP_BADHEADER); - if (! ReadOK(source->pub.input_file, bmpinfoheader+4, headerSize-4)) - ERREXIT(cinfo, JERR_INPUT_EOF); - - switch ((int) headerSize) { - case 12: - /* Decode OS/2 1.x header (Microsoft calls this a BITMAPCOREHEADER) */ - biWidth = (INT32) GET_2B(bmpinfoheader,4); - biHeight = (INT32) GET_2B(bmpinfoheader,6); - biPlanes = GET_2B(bmpinfoheader,8); - source->bits_per_pixel = (int) GET_2B(bmpinfoheader,10); - - switch (source->bits_per_pixel) { - case 8: /* colormapped image */ - mapentrysize = 3; /* OS/2 uses RGBTRIPLE colormap */ - TRACEMS2(cinfo, 1, JTRC_BMP_OS2_MAPPED, (int) biWidth, (int) biHeight); - break; - case 24: /* RGB image */ - TRACEMS2(cinfo, 1, JTRC_BMP_OS2, (int) biWidth, (int) biHeight); - break; - default: - ERREXIT(cinfo, JERR_BMP_BADDEPTH); - break; - } - if (biPlanes != 1) - ERREXIT(cinfo, JERR_BMP_BADPLANES); - break; - case 40: - case 64: - /* Decode Windows 3.x header (Microsoft calls this a BITMAPINFOHEADER) */ - /* or OS/2 2.x header, which has additional fields that we ignore */ - biWidth = GET_4B(bmpinfoheader,4); - biHeight = GET_4B(bmpinfoheader,8); - biPlanes = GET_2B(bmpinfoheader,12); - source->bits_per_pixel = (int) GET_2B(bmpinfoheader,14); - biCompression = GET_4B(bmpinfoheader,16); - biXPelsPerMeter = GET_4B(bmpinfoheader,24); - biYPelsPerMeter = GET_4B(bmpinfoheader,28); - biClrUsed = GET_4B(bmpinfoheader,32); - /* biSizeImage, biClrImportant fields are ignored */ - - switch (source->bits_per_pixel) { - case 8: /* colormapped image */ - mapentrysize = 4; /* Windows uses RGBQUAD colormap */ - TRACEMS2(cinfo, 1, JTRC_BMP_MAPPED, (int) biWidth, (int) biHeight); - break; - case 24: /* RGB image */ - TRACEMS2(cinfo, 1, JTRC_BMP, (int) biWidth, (int) biHeight); - break; - default: - ERREXIT(cinfo, JERR_BMP_BADDEPTH); - break; - } - if (biPlanes != 1) - ERREXIT(cinfo, JERR_BMP_BADPLANES); - if (biCompression != 0) - ERREXIT(cinfo, JERR_BMP_COMPRESSED); - - if (biXPelsPerMeter > 0 && biYPelsPerMeter > 0) { - /* Set JFIF density parameters from the BMP data */ - cinfo->X_density = (UINT16) (biXPelsPerMeter/100); /* 100 cm per meter */ - cinfo->Y_density = (UINT16) (biYPelsPerMeter/100); - cinfo->density_unit = 2; /* dots/cm */ - } - break; - default: - ERREXIT(cinfo, JERR_BMP_BADHEADER); - break; - } - - /* Compute distance to bitmap data --- will adjust for colormap below */ - bPad = bfOffBits - (headerSize + 14); - - /* Read the colormap, if any */ - if (mapentrysize > 0) { - if (biClrUsed <= 0) - biClrUsed = 256; /* assume it's 256 */ - else if (biClrUsed > 256) - ERREXIT(cinfo, JERR_BMP_BADCMAP); - /* Allocate space to store the colormap */ - source->colormap = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) biClrUsed, (JDIMENSION) 3); - /* and read it from the file */ - read_colormap(source, (int) biClrUsed, mapentrysize); - /* account for size of colormap */ - bPad -= biClrUsed * mapentrysize; - } - - /* Skip any remaining pad bytes */ - if (bPad < 0) /* incorrect bfOffBits value? */ - ERREXIT(cinfo, JERR_BMP_BADHEADER); - while (--bPad >= 0) { - (void) read_byte(source); - } - - /* Compute row width in file, including padding to 4-byte boundary */ - if (source->bits_per_pixel == 24) - row_width = (JDIMENSION) (biWidth * 3); - else - row_width = (JDIMENSION) biWidth; - while ((row_width & 3) != 0) row_width++; - source->row_width = row_width; - - /* Allocate space for inversion array, prepare for preload pass */ - source->whole_image = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - row_width, (JDIMENSION) biHeight, (JDIMENSION) 1); - source->pub.get_pixel_rows = preload_image; - if (cinfo->progress != NULL) { - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; - progress->total_extra_passes++; /* count file input as separate pass */ - } - - /* Allocate one-row buffer for returned data */ - source->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) (biWidth * 3), (JDIMENSION) 1); - source->pub.buffer_height = 1; - - cinfo->in_color_space = JCS_RGB; - cinfo->input_components = 3; - cinfo->data_precision = 8; - cinfo->image_width = (JDIMENSION) biWidth; - cinfo->image_height = (JDIMENSION) biHeight; -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_input_bmp (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - /* no work */ -} - - -/* - * The module selection routine for BMP format input. - */ - -GLOBAL(cjpeg_source_ptr) -jinit_read_bmp (j_compress_ptr cinfo) -{ - bmp_source_ptr source; - - /* Create module interface object */ - source = (bmp_source_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(bmp_source_struct)); - source->cinfo = cinfo; /* make back link for subroutines */ - /* Fill in method ptrs, except get_pixel_rows which start_input sets */ - source->pub.start_input = start_input_bmp; - source->pub.finish_input = finish_input_bmp; - - return (cjpeg_source_ptr) source; -} - -#endif /* BMP_SUPPORTED */ diff --git a/project/jni/jpeg/rdcolmap.c b/project/jni/jpeg/rdcolmap.c deleted file mode 100644 index 42b343763..000000000 --- a/project/jni/jpeg/rdcolmap.c +++ /dev/null @@ -1,253 +0,0 @@ -/* - * rdcolmap.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file implements djpeg's "-map file" switch. It reads a source image - * and constructs a colormap to be supplied to the JPEG decompressor. - * - * Currently, these file formats are supported for the map file: - * GIF: the contents of the GIF's global colormap are used. - * PPM (either text or raw flavor): the entire file is read and - * each unique pixel value is entered in the map. - * Note that reading a large PPM file will be horrendously slow. - * Typically, a PPM-format map file should contain just one pixel - * of each desired color. Such a file can be extracted from an - * ordinary image PPM file with ppmtomap(1). - * - * Rescaling a PPM that has a maxval unequal to MAXJSAMPLE is not - * currently implemented. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef QUANT_2PASS_SUPPORTED /* otherwise can't quantize to supplied map */ - -/* Portions of this code are based on the PBMPLUS library, which is: -** -** Copyright (C) 1988 by Jef Poskanzer. -** -** Permission to use, copy, modify, and distribute this software and its -** documentation for any purpose and without fee is hereby granted, provided -** that the above copyright notice appear in all copies and that both that -** copyright notice and this permission notice appear in supporting -** documentation. This software is provided "as is" without express or -** implied warranty. -*/ - - -/* - * Add a (potentially) new color to the color map. - */ - -LOCAL(void) -add_map_entry (j_decompress_ptr cinfo, int R, int G, int B) -{ - JSAMPROW colormap0 = cinfo->colormap[0]; - JSAMPROW colormap1 = cinfo->colormap[1]; - JSAMPROW colormap2 = cinfo->colormap[2]; - int ncolors = cinfo->actual_number_of_colors; - int index; - - /* Check for duplicate color. */ - for (index = 0; index < ncolors; index++) { - if (GETJSAMPLE(colormap0[index]) == R && - GETJSAMPLE(colormap1[index]) == G && - GETJSAMPLE(colormap2[index]) == B) - return; /* color is already in map */ - } - - /* Check for map overflow. */ - if (ncolors >= (MAXJSAMPLE+1)) - ERREXIT1(cinfo, JERR_QUANT_MANY_COLORS, (MAXJSAMPLE+1)); - - /* OK, add color to map. */ - colormap0[ncolors] = (JSAMPLE) R; - colormap1[ncolors] = (JSAMPLE) G; - colormap2[ncolors] = (JSAMPLE) B; - cinfo->actual_number_of_colors++; -} - - -/* - * Extract color map from a GIF file. - */ - -LOCAL(void) -read_gif_map (j_decompress_ptr cinfo, FILE * infile) -{ - int header[13]; - int i, colormaplen; - int R, G, B; - - /* Initial 'G' has already been read by read_color_map */ - /* Read the rest of the GIF header and logical screen descriptor */ - for (i = 1; i < 13; i++) { - if ((header[i] = getc(infile)) == EOF) - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - } - - /* Verify GIF Header */ - if (header[1] != 'I' || header[2] != 'F') - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - - /* There must be a global color map. */ - if ((header[10] & 0x80) == 0) - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - - /* OK, fetch it. */ - colormaplen = 2 << (header[10] & 0x07); - - for (i = 0; i < colormaplen; i++) { - R = getc(infile); - G = getc(infile); - B = getc(infile); - if (R == EOF || G == EOF || B == EOF) - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - add_map_entry(cinfo, - R << (BITS_IN_JSAMPLE-8), - G << (BITS_IN_JSAMPLE-8), - B << (BITS_IN_JSAMPLE-8)); - } -} - - -/* Support routines for reading PPM */ - - -LOCAL(int) -pbm_getc (FILE * infile) -/* Read next char, skipping over any comments */ -/* A comment/newline sequence is returned as a newline */ -{ - register int ch; - - ch = getc(infile); - if (ch == '#') { - do { - ch = getc(infile); - } while (ch != '\n' && ch != EOF); - } - return ch; -} - - -LOCAL(unsigned int) -read_pbm_integer (j_decompress_ptr cinfo, FILE * infile) -/* Read an unsigned decimal integer from the PPM file */ -/* Swallows one trailing character after the integer */ -/* Note that on a 16-bit-int machine, only values up to 64k can be read. */ -/* This should not be a problem in practice. */ -{ - register int ch; - register unsigned int val; - - /* Skip any leading whitespace */ - do { - ch = pbm_getc(infile); - if (ch == EOF) - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'); - - if (ch < '0' || ch > '9') - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - - val = ch - '0'; - while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') { - val *= 10; - val += ch - '0'; - } - return val; -} - - -/* - * Extract color map from a PPM file. - */ - -LOCAL(void) -read_ppm_map (j_decompress_ptr cinfo, FILE * infile) -{ - int c; - unsigned int w, h, maxval, row, col; - int R, G, B; - - /* Initial 'P' has already been read by read_color_map */ - c = getc(infile); /* save format discriminator for a sec */ - - /* while we fetch the remaining header info */ - w = read_pbm_integer(cinfo, infile); - h = read_pbm_integer(cinfo, infile); - maxval = read_pbm_integer(cinfo, infile); - - if (w <= 0 || h <= 0 || maxval <= 0) /* error check */ - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - - /* For now, we don't support rescaling from an unusual maxval. */ - if (maxval != (unsigned int) MAXJSAMPLE) - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - - switch (c) { - case '3': /* it's a text-format PPM file */ - for (row = 0; row < h; row++) { - for (col = 0; col < w; col++) { - R = read_pbm_integer(cinfo, infile); - G = read_pbm_integer(cinfo, infile); - B = read_pbm_integer(cinfo, infile); - add_map_entry(cinfo, R, G, B); - } - } - break; - - case '6': /* it's a raw-format PPM file */ - for (row = 0; row < h; row++) { - for (col = 0; col < w; col++) { - R = getc(infile); - G = getc(infile); - B = getc(infile); - if (R == EOF || G == EOF || B == EOF) - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - add_map_entry(cinfo, R, G, B); - } - } - break; - - default: - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - break; - } -} - - -/* - * Main entry point from djpeg.c. - * Input: opened input file (from file name argument on command line). - * Output: colormap and actual_number_of_colors fields are set in cinfo. - */ - -GLOBAL(void) -read_color_map (j_decompress_ptr cinfo, FILE * infile) -{ - /* Allocate space for a color map of maximum supported size. */ - cinfo->colormap = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) (MAXJSAMPLE+1), (JDIMENSION) 3); - cinfo->actual_number_of_colors = 0; /* initialize map to empty */ - - /* Read first byte to determine file format */ - switch (getc(infile)) { - case 'G': - read_gif_map(cinfo, infile); - break; - case 'P': - read_ppm_map(cinfo, infile); - break; - default: - ERREXIT(cinfo, JERR_BAD_CMAP_FILE); - break; - } -} - -#endif /* QUANT_2PASS_SUPPORTED */ diff --git a/project/jni/jpeg/rdgif.c b/project/jni/jpeg/rdgif.c deleted file mode 100644 index b27c1675d..000000000 --- a/project/jni/jpeg/rdgif.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - * rdgif.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to read input images in GIF format. - * - ***************************************************************************** - * NOTE: to avoid entanglements with Unisys' patent on LZW compression, * - * the ability to read GIF files has been removed from the IJG distribution. * - * Sorry about that. * - ***************************************************************************** - * - * We are required to state that - * "The Graphics Interchange Format(c) is the Copyright property of - * CompuServe Incorporated. GIF(sm) is a Service Mark property of - * CompuServe Incorporated." - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef GIF_SUPPORTED - -/* - * The module selection routine for GIF format input. - */ - -GLOBAL(cjpeg_source_ptr) -jinit_read_gif (j_compress_ptr cinfo) -{ - fprintf(stderr, "GIF input is unsupported for legal reasons. Sorry.\n"); - exit(EXIT_FAILURE); - return NULL; /* keep compiler happy */ -} - -#endif /* GIF_SUPPORTED */ diff --git a/project/jni/jpeg/rdjpgcom.1 b/project/jni/jpeg/rdjpgcom.1 deleted file mode 100644 index 2bba04e1a..000000000 --- a/project/jni/jpeg/rdjpgcom.1 +++ /dev/null @@ -1,54 +0,0 @@ -.TH RDJPGCOM 1 "11 October 1997" -.SH NAME -rdjpgcom \- display text comments from a JPEG file -.SH SYNOPSIS -.B rdjpgcom -[ -.B \-verbose -] -[ -.I filename -] -.LP -.SH DESCRIPTION -.LP -.B rdjpgcom -reads the named JPEG/JFIF file, or the standard input if no file is named, -and prints any text comments found in the file on the standard output. -.PP -The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. -Although the standard doesn't actually define what COM blocks are for, they -are widely used to hold user-supplied text strings. This lets you add -annotations, titles, index terms, etc to your JPEG files, and later retrieve -them as text. COM blocks do not interfere with the image stored in the JPEG -file. The maximum size of a COM block is 64K, but you can have as many of -them as you like in one JPEG file. -.SH OPTIONS -.TP -.B \-verbose -Causes -.B rdjpgcom -to also display the JPEG image dimensions. -.PP -Switch names may be abbreviated, and are not case sensitive. -.SH HINTS -.B rdjpgcom -does not depend on the IJG JPEG library. Its source code is intended as an -illustration of the minimum amount of code required to parse a JPEG file -header correctly. -.PP -In -.B \-verbose -mode, -.B rdjpgcom -will also attempt to print the contents of any "APP12" markers as text. -Some digital cameras produce APP12 markers containing useful textual -information. If you like, you can modify the source code to print -other APPn marker types as well. -.SH SEE ALSO -.BR cjpeg (1), -.BR djpeg (1), -.BR jpegtran (1), -.BR wrjpgcom (1) -.SH AUTHOR -Independent JPEG Group diff --git a/project/jni/jpeg/rdjpgcom.c b/project/jni/jpeg/rdjpgcom.c deleted file mode 100644 index ffe6fc621..000000000 --- a/project/jni/jpeg/rdjpgcom.c +++ /dev/null @@ -1,496 +0,0 @@ -/* - * rdjpgcom.c - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a very simple stand-alone application that displays - * the text in COM (comment) markers in a JFIF file. - * This may be useful as an example of the minimum logic needed to parse - * JPEG markers. - */ - -#define JPEG_CJPEG_DJPEG /* to get the command-line config symbols */ -#include "jinclude.h" /* get auto-config symbols, */ - -#include /* to declare isupper(), tolower() */ -#ifdef USE_SETMODE -#include /* to declare setmode()'s parameter macros */ -/* If you have setmode() but not , just delete this line: */ -#include /* to declare setmode() */ -#endif - -#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ -#ifdef __MWERKS__ -#include /* Metrowerks needs this */ -#include /* ... and this */ -#endif -#ifdef THINK_C -#include /* Think declares it here */ -#endif -#endif - -#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ -#define READ_BINARY "r" -#else -#ifdef VMS /* VMS is very nonstandard */ -#define READ_BINARY "rb", "ctx=stm" -#else /* standard ANSI-compliant case */ -#define READ_BINARY "rb" -#endif -#endif - -#ifndef EXIT_FAILURE /* define exit() codes if not provided */ -#define EXIT_FAILURE 1 -#endif -#ifndef EXIT_SUCCESS -#ifdef VMS -#define EXIT_SUCCESS 1 /* VMS is very nonstandard */ -#else -#define EXIT_SUCCESS 0 -#endif -#endif - - -/* - * These macros are used to read the input file. - * To reuse this code in another application, you might need to change these. - */ - -static FILE * infile; /* input JPEG file */ - -/* Return next input byte, or EOF if no more */ -#define NEXTBYTE() getc(infile) - - -/* Error exit handler */ -#define ERREXIT(msg) (fprintf(stderr, "%s\n", msg), exit(EXIT_FAILURE)) - - -/* Read one byte, testing for EOF */ -static int -read_1_byte (void) -{ - int c; - - c = NEXTBYTE(); - if (c == EOF) - ERREXIT("Premature EOF in JPEG file"); - return c; -} - -/* Read 2 bytes, convert to unsigned int */ -/* All 2-byte quantities in JPEG markers are MSB first */ -static unsigned int -read_2_bytes (void) -{ - int c1, c2; - - c1 = NEXTBYTE(); - if (c1 == EOF) - ERREXIT("Premature EOF in JPEG file"); - c2 = NEXTBYTE(); - if (c2 == EOF) - ERREXIT("Premature EOF in JPEG file"); - return (((unsigned int) c1) << 8) + ((unsigned int) c2); -} - - -/* - * JPEG markers consist of one or more 0xFF bytes, followed by a marker - * code byte (which is not an FF). Here are the marker codes of interest - * in this program. (See jdmarker.c for a more complete list.) - */ - -#define M_SOF0 0xC0 /* Start Of Frame N */ -#define M_SOF1 0xC1 /* N indicates which compression process */ -#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */ -#define M_SOF3 0xC3 -#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ -#define M_SOF6 0xC6 -#define M_SOF7 0xC7 -#define M_SOF9 0xC9 -#define M_SOF10 0xCA -#define M_SOF11 0xCB -#define M_SOF13 0xCD -#define M_SOF14 0xCE -#define M_SOF15 0xCF -#define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */ -#define M_EOI 0xD9 /* End Of Image (end of datastream) */ -#define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ -#define M_APP0 0xE0 /* Application-specific marker, type N */ -#define M_APP12 0xEC /* (we don't bother to list all 16 APPn's) */ -#define M_COM 0xFE /* COMment */ - - -/* - * Find the next JPEG marker and return its marker code. - * We expect at least one FF byte, possibly more if the compressor used FFs - * to pad the file. - * There could also be non-FF garbage between markers. The treatment of such - * garbage is unspecified; we choose to skip over it but emit a warning msg. - * NB: this routine must not be used after seeing SOS marker, since it will - * not deal correctly with FF/00 sequences in the compressed image data... - */ - -static int -next_marker (void) -{ - int c; - int discarded_bytes = 0; - - /* Find 0xFF byte; count and skip any non-FFs. */ - c = read_1_byte(); - while (c != 0xFF) { - discarded_bytes++; - c = read_1_byte(); - } - /* Get marker code byte, swallowing any duplicate FF bytes. Extra FFs - * are legal as pad bytes, so don't count them in discarded_bytes. - */ - do { - c = read_1_byte(); - } while (c == 0xFF); - - if (discarded_bytes != 0) { - fprintf(stderr, "Warning: garbage data found in JPEG file\n"); - } - - return c; -} - - -/* - * Read the initial marker, which should be SOI. - * For a JFIF file, the first two bytes of the file should be literally - * 0xFF M_SOI. To be more general, we could use next_marker, but if the - * input file weren't actually JPEG at all, next_marker might read the whole - * file and then return a misleading error message... - */ - -static int -first_marker (void) -{ - int c1, c2; - - c1 = NEXTBYTE(); - c2 = NEXTBYTE(); - if (c1 != 0xFF || c2 != M_SOI) - ERREXIT("Not a JPEG file"); - return c2; -} - - -/* - * Most types of marker are followed by a variable-length parameter segment. - * This routine skips over the parameters for any marker we don't otherwise - * want to process. - * Note that we MUST skip the parameter segment explicitly in order not to - * be fooled by 0xFF bytes that might appear within the parameter segment; - * such bytes do NOT introduce new markers. - */ - -static void -skip_variable (void) -/* Skip over an unknown or uninteresting variable-length marker */ -{ - unsigned int length; - - /* Get the marker parameter length count */ - length = read_2_bytes(); - /* Length includes itself, so must be at least 2 */ - if (length < 2) - ERREXIT("Erroneous JPEG marker length"); - length -= 2; - /* Skip over the remaining bytes */ - while (length > 0) { - (void) read_1_byte(); - length--; - } -} - - -/* - * Process a COM marker. - * We want to print out the marker contents as legible text; - * we must guard against non-text junk and varying newline representations. - */ - -static void -process_COM (void) -{ - unsigned int length; - int ch; - int lastch = 0; - - /* Get the marker parameter length count */ - length = read_2_bytes(); - /* Length includes itself, so must be at least 2 */ - if (length < 2) - ERREXIT("Erroneous JPEG marker length"); - length -= 2; - - while (length > 0) { - ch = read_1_byte(); - /* Emit the character in a readable form. - * Nonprintables are converted to \nnn form, - * while \ is converted to \\. - * Newlines in CR, CR/LF, or LF form will be printed as one newline. - */ - if (ch == '\r') { - printf("\n"); - } else if (ch == '\n') { - if (lastch != '\r') - printf("\n"); - } else if (ch == '\\') { - printf("\\\\"); - } else if (isprint(ch)) { - putc(ch, stdout); - } else { - printf("\\%03o", ch); - } - lastch = ch; - length--; - } - printf("\n"); -} - - -/* - * Process a SOFn marker. - * This code is only needed if you want to know the image dimensions... - */ - -static void -process_SOFn (int marker) -{ - unsigned int length; - unsigned int image_height, image_width; - int data_precision, num_components; - const char * process; - int ci; - - length = read_2_bytes(); /* usual parameter length count */ - - data_precision = read_1_byte(); - image_height = read_2_bytes(); - image_width = read_2_bytes(); - num_components = read_1_byte(); - - switch (marker) { - case M_SOF0: process = "Baseline"; break; - case M_SOF1: process = "Extended sequential"; break; - case M_SOF2: process = "Progressive"; break; - case M_SOF3: process = "Lossless"; break; - case M_SOF5: process = "Differential sequential"; break; - case M_SOF6: process = "Differential progressive"; break; - case M_SOF7: process = "Differential lossless"; break; - case M_SOF9: process = "Extended sequential, arithmetic coding"; break; - case M_SOF10: process = "Progressive, arithmetic coding"; break; - case M_SOF11: process = "Lossless, arithmetic coding"; break; - case M_SOF13: process = "Differential sequential, arithmetic coding"; break; - case M_SOF14: process = "Differential progressive, arithmetic coding"; break; - case M_SOF15: process = "Differential lossless, arithmetic coding"; break; - default: process = "Unknown"; break; - } - - printf("JPEG image is %uw * %uh, %d color components, %d bits per sample\n", - image_width, image_height, num_components, data_precision); - printf("JPEG process: %s\n", process); - - if (length != (unsigned int) (8 + num_components * 3)) - ERREXIT("Bogus SOF marker length"); - - for (ci = 0; ci < num_components; ci++) { - (void) read_1_byte(); /* Component ID code */ - (void) read_1_byte(); /* H, V sampling factors */ - (void) read_1_byte(); /* Quantization table number */ - } -} - - -/* - * Parse the marker stream until SOS or EOI is seen; - * display any COM markers. - * While the companion program wrjpgcom will always insert COM markers before - * SOFn, other implementations might not, so we scan to SOS before stopping. - * If we were only interested in the image dimensions, we would stop at SOFn. - * (Conversely, if we only cared about COM markers, there would be no need - * for special code to handle SOFn; we could treat it like other markers.) - */ - -static int -scan_JPEG_header (int verbose) -{ - int marker; - - /* Expect SOI at start of file */ - if (first_marker() != M_SOI) - ERREXIT("Expected SOI marker first"); - - /* Scan miscellaneous markers until we reach SOS. */ - for (;;) { - marker = next_marker(); - switch (marker) { - /* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be, - * treated as SOFn. C4 in particular is actually DHT. - */ - case M_SOF0: /* Baseline */ - case M_SOF1: /* Extended sequential, Huffman */ - case M_SOF2: /* Progressive, Huffman */ - case M_SOF3: /* Lossless, Huffman */ - case M_SOF5: /* Differential sequential, Huffman */ - case M_SOF6: /* Differential progressive, Huffman */ - case M_SOF7: /* Differential lossless, Huffman */ - case M_SOF9: /* Extended sequential, arithmetic */ - case M_SOF10: /* Progressive, arithmetic */ - case M_SOF11: /* Lossless, arithmetic */ - case M_SOF13: /* Differential sequential, arithmetic */ - case M_SOF14: /* Differential progressive, arithmetic */ - case M_SOF15: /* Differential lossless, arithmetic */ - if (verbose) - process_SOFn(marker); - else - skip_variable(); - break; - - case M_SOS: /* stop before hitting compressed data */ - return marker; - - case M_EOI: /* in case it's a tables-only JPEG stream */ - return marker; - - case M_COM: - process_COM(); - break; - - case M_APP12: - /* Some digital camera makers put useful textual information into - * APP12 markers, so we print those out too when in -verbose mode. - */ - if (verbose) { - printf("APP12 contains:\n"); - process_COM(); - } else - skip_variable(); - break; - - default: /* Anything else just gets skipped */ - skip_variable(); /* we assume it has a parameter count... */ - break; - } - } /* end loop */ -} - - -/* Command line parsing code */ - -static const char * progname; /* program name for error messages */ - - -static void -usage (void) -/* complain about bad command line */ -{ - fprintf(stderr, "rdjpgcom displays any textual comments in a JPEG file.\n"); - - fprintf(stderr, "Usage: %s [switches] [inputfile]\n", progname); - - fprintf(stderr, "Switches (names may be abbreviated):\n"); - fprintf(stderr, " -verbose Also display dimensions of JPEG image\n"); - - exit(EXIT_FAILURE); -} - - -static int -keymatch (char * arg, const char * keyword, int minchars) -/* Case-insensitive matching of (possibly abbreviated) keyword switches. */ -/* keyword is the constant keyword (must be lower case already), */ -/* minchars is length of minimum legal abbreviation. */ -{ - register int ca, ck; - register int nmatched = 0; - - while ((ca = *arg++) != '\0') { - if ((ck = *keyword++) == '\0') - return 0; /* arg longer than keyword, no good */ - if (isupper(ca)) /* force arg to lcase (assume ck is already) */ - ca = tolower(ca); - if (ca != ck) - return 0; /* no good */ - nmatched++; /* count matched characters */ - } - /* reached end of argument; fail if it's too short for unique abbrev */ - if (nmatched < minchars) - return 0; - return 1; /* A-OK */ -} - - -/* - * The main program. - */ - -int -main (int argc, char **argv) -{ - int argn; - char * arg; - int verbose = 0; - - /* On Mac, fetch a command line. */ -#ifdef USE_CCOMMAND - argc = ccommand(&argv); -#endif - - progname = argv[0]; - if (progname == NULL || progname[0] == 0) - progname = "rdjpgcom"; /* in case C library doesn't provide it */ - - /* Parse switches, if any */ - for (argn = 1; argn < argc; argn++) { - arg = argv[argn]; - if (arg[0] != '-') - break; /* not switch, must be file name */ - arg++; /* advance over '-' */ - if (keymatch(arg, "verbose", 1)) { - verbose++; - } else - usage(); - } - - /* Open the input file. */ - /* Unix style: expect zero or one file name */ - if (argn < argc-1) { - fprintf(stderr, "%s: only one input file\n", progname); - usage(); - } - if (argn < argc) { - if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); - exit(EXIT_FAILURE); - } - } else { - /* default input file is stdin */ -#ifdef USE_SETMODE /* need to hack file mode? */ - setmode(fileno(stdin), O_BINARY); -#endif -#ifdef USE_FDOPEN /* need to re-open in binary mode? */ - if ((infile = fdopen(fileno(stdin), READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open stdin\n", progname); - exit(EXIT_FAILURE); - } -#else - infile = stdin; -#endif - } - - /* Scan the JPEG headers. */ - (void) scan_JPEG_header(verbose); - - /* All done. */ - exit(EXIT_SUCCESS); - return 0; /* suppress no-return-value warnings */ -} diff --git a/project/jni/jpeg/rdppm.c b/project/jni/jpeg/rdppm.c deleted file mode 100644 index 1df35c1b3..000000000 --- a/project/jni/jpeg/rdppm.c +++ /dev/null @@ -1,458 +0,0 @@ -/* - * rdppm.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to read input images in PPM/PGM format. - * The extended 2-byte-per-sample raw PPM/PGM formats are supported. - * The PBMPLUS library is NOT required to compile this software - * (but it is highly useful as a set of PPM image manipulation programs). - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume input from - * an ordinary stdio stream. They further assume that reading begins - * at the start of the file; start_input may need work if the - * user interface has already read some data (e.g., to determine that - * the file is indeed PPM format). - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef PPM_SUPPORTED - - -/* Portions of this code are based on the PBMPLUS library, which is: -** -** Copyright (C) 1988 by Jef Poskanzer. -** -** Permission to use, copy, modify, and distribute this software and its -** documentation for any purpose and without fee is hereby granted, provided -** that the above copyright notice appear in all copies and that both that -** copyright notice and this permission notice appear in supporting -** documentation. This software is provided "as is" without express or -** implied warranty. -*/ - - -/* Macros to deal with unsigned chars as efficiently as compiler allows */ - -#ifdef HAVE_UNSIGNED_CHAR -typedef unsigned char U_CHAR; -#define UCH(x) ((int) (x)) -#else /* !HAVE_UNSIGNED_CHAR */ -#ifdef CHAR_IS_UNSIGNED -typedef char U_CHAR; -#define UCH(x) ((int) (x)) -#else -typedef char U_CHAR; -#define UCH(x) ((int) (x) & 0xFF) -#endif -#endif /* HAVE_UNSIGNED_CHAR */ - - -#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) - - -/* - * On most systems, reading individual bytes with getc() is drastically less - * efficient than buffering a row at a time with fread(). On PCs, we must - * allocate the buffer in near data space, because we are assuming small-data - * memory model, wherein fread() can't reach far memory. If you need to - * process very wide images on a PC, you might have to compile in large-memory - * model, or else replace fread() with a getc() loop --- which will be much - * slower. - */ - - -/* Private version of data source object */ - -typedef struct { - struct cjpeg_source_struct pub; /* public fields */ - - U_CHAR *iobuffer; /* non-FAR pointer to I/O buffer */ - JSAMPROW pixrow; /* FAR pointer to same */ - size_t buffer_width; /* width of I/O buffer */ - JSAMPLE *rescale; /* => maxval-remapping array, or NULL */ -} ppm_source_struct; - -typedef ppm_source_struct * ppm_source_ptr; - - -LOCAL(int) -pbm_getc (FILE * infile) -/* Read next char, skipping over any comments */ -/* A comment/newline sequence is returned as a newline */ -{ - register int ch; - - ch = getc(infile); - if (ch == '#') { - do { - ch = getc(infile); - } while (ch != '\n' && ch != EOF); - } - return ch; -} - - -LOCAL(unsigned int) -read_pbm_integer (j_compress_ptr cinfo, FILE * infile) -/* Read an unsigned decimal integer from the PPM file */ -/* Swallows one trailing character after the integer */ -/* Note that on a 16-bit-int machine, only values up to 64k can be read. */ -/* This should not be a problem in practice. */ -{ - register int ch; - register unsigned int val; - - /* Skip any leading whitespace */ - do { - ch = pbm_getc(infile); - if (ch == EOF) - ERREXIT(cinfo, JERR_INPUT_EOF); - } while (ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'); - - if (ch < '0' || ch > '9') - ERREXIT(cinfo, JERR_PPM_NONNUMERIC); - - val = ch - '0'; - while ((ch = pbm_getc(infile)) >= '0' && ch <= '9') { - val *= 10; - val += ch - '0'; - } - return val; -} - - -/* - * Read one row of pixels. - * - * We provide several different versions depending on input file format. - * In all cases, input is scaled to the size of JSAMPLE. - * - * A really fast path is provided for reading byte/sample raw files with - * maxval = MAXJSAMPLE, which is the normal case for 8-bit data. - */ - - -METHODDEF(JDIMENSION) -get_text_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading text-format PGM files with any maxval */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - FILE * infile = source->pub.input_file; - register JSAMPROW ptr; - register JSAMPLE *rescale = source->rescale; - JDIMENSION col; - - ptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; - } - return 1; -} - - -METHODDEF(JDIMENSION) -get_text_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading text-format PPM files with any maxval */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - FILE * infile = source->pub.input_file; - register JSAMPROW ptr; - register JSAMPLE *rescale = source->rescale; - JDIMENSION col; - - ptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; - *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; - *ptr++ = rescale[read_pbm_integer(cinfo, infile)]; - } - return 1; -} - - -METHODDEF(JDIMENSION) -get_scaled_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading raw-byte-format PGM files with any maxval */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - register JSAMPROW ptr; - register U_CHAR * bufferptr; - register JSAMPLE *rescale = source->rescale; - JDIMENSION col; - - if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) - ERREXIT(cinfo, JERR_INPUT_EOF); - ptr = source->pub.buffer[0]; - bufferptr = source->iobuffer; - for (col = cinfo->image_width; col > 0; col--) { - *ptr++ = rescale[UCH(*bufferptr++)]; - } - return 1; -} - - -METHODDEF(JDIMENSION) -get_scaled_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading raw-byte-format PPM files with any maxval */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - register JSAMPROW ptr; - register U_CHAR * bufferptr; - register JSAMPLE *rescale = source->rescale; - JDIMENSION col; - - if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) - ERREXIT(cinfo, JERR_INPUT_EOF); - ptr = source->pub.buffer[0]; - bufferptr = source->iobuffer; - for (col = cinfo->image_width; col > 0; col--) { - *ptr++ = rescale[UCH(*bufferptr++)]; - *ptr++ = rescale[UCH(*bufferptr++)]; - *ptr++ = rescale[UCH(*bufferptr++)]; - } - return 1; -} - - -METHODDEF(JDIMENSION) -get_raw_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading raw-byte-format files with maxval = MAXJSAMPLE. - * In this case we just read right into the JSAMPLE buffer! - * Note that same code works for PPM and PGM files. - */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - - if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) - ERREXIT(cinfo, JERR_INPUT_EOF); - return 1; -} - - -METHODDEF(JDIMENSION) -get_word_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading raw-word-format PGM files with any maxval */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - register JSAMPROW ptr; - register U_CHAR * bufferptr; - register JSAMPLE *rescale = source->rescale; - JDIMENSION col; - - if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) - ERREXIT(cinfo, JERR_INPUT_EOF); - ptr = source->pub.buffer[0]; - bufferptr = source->iobuffer; - for (col = cinfo->image_width; col > 0; col--) { - register int temp; - temp = UCH(*bufferptr++); - temp |= UCH(*bufferptr++) << 8; - *ptr++ = rescale[temp]; - } - return 1; -} - - -METHODDEF(JDIMENSION) -get_word_rgb_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading raw-word-format PPM files with any maxval */ -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - register JSAMPROW ptr; - register U_CHAR * bufferptr; - register JSAMPLE *rescale = source->rescale; - JDIMENSION col; - - if (! ReadOK(source->pub.input_file, source->iobuffer, source->buffer_width)) - ERREXIT(cinfo, JERR_INPUT_EOF); - ptr = source->pub.buffer[0]; - bufferptr = source->iobuffer; - for (col = cinfo->image_width; col > 0; col--) { - register int temp; - temp = UCH(*bufferptr++); - temp |= UCH(*bufferptr++) << 8; - *ptr++ = rescale[temp]; - temp = UCH(*bufferptr++); - temp |= UCH(*bufferptr++) << 8; - *ptr++ = rescale[temp]; - temp = UCH(*bufferptr++); - temp |= UCH(*bufferptr++) << 8; - *ptr++ = rescale[temp]; - } - return 1; -} - - -/* - * Read the file header; return image size and component count. - */ - -METHODDEF(void) -start_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - ppm_source_ptr source = (ppm_source_ptr) sinfo; - int c; - unsigned int w, h, maxval; - boolean need_iobuffer, use_raw_buffer, need_rescale; - - if (getc(source->pub.input_file) != 'P') - ERREXIT(cinfo, JERR_PPM_NOT); - - c = getc(source->pub.input_file); /* subformat discriminator character */ - - /* detect unsupported variants (ie, PBM) before trying to read header */ - switch (c) { - case '2': /* it's a text-format PGM file */ - case '3': /* it's a text-format PPM file */ - case '5': /* it's a raw-format PGM file */ - case '6': /* it's a raw-format PPM file */ - break; - default: - ERREXIT(cinfo, JERR_PPM_NOT); - break; - } - - /* fetch the remaining header info */ - w = read_pbm_integer(cinfo, source->pub.input_file); - h = read_pbm_integer(cinfo, source->pub.input_file); - maxval = read_pbm_integer(cinfo, source->pub.input_file); - - if (w <= 0 || h <= 0 || maxval <= 0) /* error check */ - ERREXIT(cinfo, JERR_PPM_NOT); - - cinfo->data_precision = BITS_IN_JSAMPLE; /* we always rescale data to this */ - cinfo->image_width = (JDIMENSION) w; - cinfo->image_height = (JDIMENSION) h; - - /* initialize flags to most common settings */ - need_iobuffer = TRUE; /* do we need an I/O buffer? */ - use_raw_buffer = FALSE; /* do we map input buffer onto I/O buffer? */ - need_rescale = TRUE; /* do we need a rescale array? */ - - switch (c) { - case '2': /* it's a text-format PGM file */ - cinfo->input_components = 1; - cinfo->in_color_space = JCS_GRAYSCALE; - TRACEMS2(cinfo, 1, JTRC_PGM_TEXT, w, h); - source->pub.get_pixel_rows = get_text_gray_row; - need_iobuffer = FALSE; - break; - - case '3': /* it's a text-format PPM file */ - cinfo->input_components = 3; - cinfo->in_color_space = JCS_RGB; - TRACEMS2(cinfo, 1, JTRC_PPM_TEXT, w, h); - source->pub.get_pixel_rows = get_text_rgb_row; - need_iobuffer = FALSE; - break; - - case '5': /* it's a raw-format PGM file */ - cinfo->input_components = 1; - cinfo->in_color_space = JCS_GRAYSCALE; - TRACEMS2(cinfo, 1, JTRC_PGM, w, h); - if (maxval > 255) { - source->pub.get_pixel_rows = get_word_gray_row; - } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) { - source->pub.get_pixel_rows = get_raw_row; - use_raw_buffer = TRUE; - need_rescale = FALSE; - } else { - source->pub.get_pixel_rows = get_scaled_gray_row; - } - break; - - case '6': /* it's a raw-format PPM file */ - cinfo->input_components = 3; - cinfo->in_color_space = JCS_RGB; - TRACEMS2(cinfo, 1, JTRC_PPM, w, h); - if (maxval > 255) { - source->pub.get_pixel_rows = get_word_rgb_row; - } else if (maxval == MAXJSAMPLE && SIZEOF(JSAMPLE) == SIZEOF(U_CHAR)) { - source->pub.get_pixel_rows = get_raw_row; - use_raw_buffer = TRUE; - need_rescale = FALSE; - } else { - source->pub.get_pixel_rows = get_scaled_rgb_row; - } - break; - } - - /* Allocate space for I/O buffer: 1 or 3 bytes or words/pixel. */ - if (need_iobuffer) { - source->buffer_width = (size_t) w * cinfo->input_components * - ((maxval<=255) ? SIZEOF(U_CHAR) : (2*SIZEOF(U_CHAR))); - source->iobuffer = (U_CHAR *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - source->buffer_width); - } - - /* Create compressor input buffer. */ - if (use_raw_buffer) { - /* For unscaled raw-input case, we can just map it onto the I/O buffer. */ - /* Synthesize a JSAMPARRAY pointer structure */ - /* Cast here implies near->far pointer conversion on PCs */ - source->pixrow = (JSAMPROW) source->iobuffer; - source->pub.buffer = & source->pixrow; - source->pub.buffer_height = 1; - } else { - /* Need to translate anyway, so make a separate sample buffer. */ - source->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) w * cinfo->input_components, (JDIMENSION) 1); - source->pub.buffer_height = 1; - } - - /* Compute the rescaling array if required. */ - if (need_rescale) { - INT32 val, half_maxval; - - /* On 16-bit-int machines we have to be careful of maxval = 65535 */ - source->rescale = (JSAMPLE *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (size_t) (((long) maxval + 1L) * SIZEOF(JSAMPLE))); - half_maxval = maxval / 2; - for (val = 0; val <= (INT32) maxval; val++) { - /* The multiplication here must be done in 32 bits to avoid overflow */ - source->rescale[val] = (JSAMPLE) ((val*MAXJSAMPLE + half_maxval)/maxval); - } - } -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_input_ppm (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - /* no work */ -} - - -/* - * The module selection routine for PPM format input. - */ - -GLOBAL(cjpeg_source_ptr) -jinit_read_ppm (j_compress_ptr cinfo) -{ - ppm_source_ptr source; - - /* Create module interface object */ - source = (ppm_source_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(ppm_source_struct)); - /* Fill in method ptrs, except get_pixel_rows which start_input sets */ - source->pub.start_input = start_input_ppm; - source->pub.finish_input = finish_input_ppm; - - return (cjpeg_source_ptr) source; -} - -#endif /* PPM_SUPPORTED */ diff --git a/project/jni/jpeg/rdrle.c b/project/jni/jpeg/rdrle.c deleted file mode 100644 index 542bc3749..000000000 --- a/project/jni/jpeg/rdrle.c +++ /dev/null @@ -1,387 +0,0 @@ -/* - * rdrle.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to read input images in Utah RLE format. - * The Utah Raster Toolkit library is required (version 3.1 or later). - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume input from - * an ordinary stdio stream. They further assume that reading begins - * at the start of the file; start_input may need work if the - * user interface has already read some data (e.g., to determine that - * the file is indeed RLE format). - * - * Based on code contributed by Mike Lijewski, - * with updates from Robert Hutchinson. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef RLE_SUPPORTED - -/* rle.h is provided by the Utah Raster Toolkit. */ - -#include - -/* - * We assume that JSAMPLE has the same representation as rle_pixel, - * to wit, "unsigned char". Hence we can't cope with 12- or 16-bit samples. - */ - -#if BITS_IN_JSAMPLE != 8 - Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ -#endif - -/* - * We support the following types of RLE files: - * - * GRAYSCALE - 8 bits, no colormap - * MAPPEDGRAY - 8 bits, 1 channel colomap - * PSEUDOCOLOR - 8 bits, 3 channel colormap - * TRUECOLOR - 24 bits, 3 channel colormap - * DIRECTCOLOR - 24 bits, no colormap - * - * For now, we ignore any alpha channel in the image. - */ - -typedef enum - { GRAYSCALE, MAPPEDGRAY, PSEUDOCOLOR, TRUECOLOR, DIRECTCOLOR } rle_kind; - - -/* - * Since RLE stores scanlines bottom-to-top, we have to invert the image - * to conform to JPEG's top-to-bottom order. To do this, we read the - * incoming image into a virtual array on the first get_pixel_rows call, - * then fetch the required row from the virtual array on subsequent calls. - */ - -typedef struct _rle_source_struct * rle_source_ptr; - -typedef struct _rle_source_struct { - struct cjpeg_source_struct pub; /* public fields */ - - rle_kind visual; /* actual type of input file */ - jvirt_sarray_ptr image; /* virtual array to hold the image */ - JDIMENSION row; /* current row # in the virtual array */ - rle_hdr header; /* Input file information */ - rle_pixel** rle_row; /* holds a row returned by rle_getrow() */ - -} rle_source_struct; - - -/* - * Read the file header; return image size and component count. - */ - -METHODDEF(void) -start_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - rle_source_ptr source = (rle_source_ptr) sinfo; - JDIMENSION width, height; -#ifdef PROGRESS_REPORT - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; -#endif - - /* Use RLE library routine to get the header info */ - source->header = *rle_hdr_init(NULL); - source->header.rle_file = source->pub.input_file; - switch (rle_get_setup(&(source->header))) { - case RLE_SUCCESS: - /* A-OK */ - break; - case RLE_NOT_RLE: - ERREXIT(cinfo, JERR_RLE_NOT); - break; - case RLE_NO_SPACE: - ERREXIT(cinfo, JERR_RLE_MEM); - break; - case RLE_EMPTY: - ERREXIT(cinfo, JERR_RLE_EMPTY); - break; - case RLE_EOF: - ERREXIT(cinfo, JERR_RLE_EOF); - break; - default: - ERREXIT(cinfo, JERR_RLE_BADERROR); - break; - } - - /* Figure out what we have, set private vars and return values accordingly */ - - width = source->header.xmax - source->header.xmin + 1; - height = source->header.ymax - source->header.ymin + 1; - source->header.xmin = 0; /* realign horizontally */ - source->header.xmax = width-1; - - cinfo->image_width = width; - cinfo->image_height = height; - cinfo->data_precision = 8; /* we can only handle 8 bit data */ - - if (source->header.ncolors == 1 && source->header.ncmap == 0) { - source->visual = GRAYSCALE; - TRACEMS2(cinfo, 1, JTRC_RLE_GRAY, width, height); - } else if (source->header.ncolors == 1 && source->header.ncmap == 1) { - source->visual = MAPPEDGRAY; - TRACEMS3(cinfo, 1, JTRC_RLE_MAPGRAY, width, height, - 1 << source->header.cmaplen); - } else if (source->header.ncolors == 1 && source->header.ncmap == 3) { - source->visual = PSEUDOCOLOR; - TRACEMS3(cinfo, 1, JTRC_RLE_MAPPED, width, height, - 1 << source->header.cmaplen); - } else if (source->header.ncolors == 3 && source->header.ncmap == 3) { - source->visual = TRUECOLOR; - TRACEMS3(cinfo, 1, JTRC_RLE_FULLMAP, width, height, - 1 << source->header.cmaplen); - } else if (source->header.ncolors == 3 && source->header.ncmap == 0) { - source->visual = DIRECTCOLOR; - TRACEMS2(cinfo, 1, JTRC_RLE, width, height); - } else - ERREXIT(cinfo, JERR_RLE_UNSUPPORTED); - - if (source->visual == GRAYSCALE || source->visual == MAPPEDGRAY) { - cinfo->in_color_space = JCS_GRAYSCALE; - cinfo->input_components = 1; - } else { - cinfo->in_color_space = JCS_RGB; - cinfo->input_components = 3; - } - - /* - * A place to hold each scanline while it's converted. - * (GRAYSCALE scanlines don't need converting) - */ - if (source->visual != GRAYSCALE) { - source->rle_row = (rle_pixel**) (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) width, (JDIMENSION) cinfo->input_components); - } - - /* request a virtual array to hold the image */ - source->image = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - (JDIMENSION) (width * source->header.ncolors), - (JDIMENSION) height, (JDIMENSION) 1); - -#ifdef PROGRESS_REPORT - if (progress != NULL) { - /* count file input as separate pass */ - progress->total_extra_passes++; - } -#endif - - source->pub.buffer_height = 1; -} - - -/* - * Read one row of pixels. - * Called only after load_image has read the image into the virtual array. - * Used for GRAYSCALE, MAPPEDGRAY, TRUECOLOR, and DIRECTCOLOR images. - */ - -METHODDEF(JDIMENSION) -get_rle_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - rle_source_ptr source = (rle_source_ptr) sinfo; - - source->row--; - source->pub.buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE); - - return 1; -} - -/* - * Read one row of pixels. - * Called only after load_image has read the image into the virtual array. - * Used for PSEUDOCOLOR images. - */ - -METHODDEF(JDIMENSION) -get_pseudocolor_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - rle_source_ptr source = (rle_source_ptr) sinfo; - JSAMPROW src_row, dest_row; - JDIMENSION col; - rle_map *colormap; - int val; - - colormap = source->header.cmap; - dest_row = source->pub.buffer[0]; - source->row--; - src_row = * (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->image, source->row, (JDIMENSION) 1, FALSE); - - for (col = cinfo->image_width; col > 0; col--) { - val = GETJSAMPLE(*src_row++); - *dest_row++ = (JSAMPLE) (colormap[val ] >> 8); - *dest_row++ = (JSAMPLE) (colormap[val + 256] >> 8); - *dest_row++ = (JSAMPLE) (colormap[val + 512] >> 8); - } - - return 1; -} - - -/* - * Load the image into a virtual array. We have to do this because RLE - * files start at the lower left while the JPEG standard has them starting - * in the upper left. This is called the first time we want to get a row - * of input. What we do is load the RLE data into the array and then call - * the appropriate routine to read one row from the array. Before returning, - * we set source->pub.get_pixel_rows so that subsequent calls go straight to - * the appropriate row-reading routine. - */ - -METHODDEF(JDIMENSION) -load_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - rle_source_ptr source = (rle_source_ptr) sinfo; - JDIMENSION row, col; - JSAMPROW scanline, red_ptr, green_ptr, blue_ptr; - rle_pixel **rle_row; - rle_map *colormap; - char channel; -#ifdef PROGRESS_REPORT - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; -#endif - - colormap = source->header.cmap; - rle_row = source->rle_row; - - /* Read the RLE data into our virtual array. - * We assume here that (a) rle_pixel is represented the same as JSAMPLE, - * and (b) we are not on a machine where FAR pointers differ from regular. - */ - RLE_CLR_BIT(source->header, RLE_ALPHA); /* don't read the alpha channel */ - -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_limit = cinfo->image_height; - progress->pub.pass_counter = 0; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - - switch (source->visual) { - - case GRAYSCALE: - case PSEUDOCOLOR: - for (row = 0; row < cinfo->image_height; row++) { - rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE); - rle_getrow(&source->header, rle_row); -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_counter++; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - } - break; - - case MAPPEDGRAY: - case TRUECOLOR: - for (row = 0; row < cinfo->image_height; row++) { - scanline = * (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE); - rle_row = source->rle_row; - rle_getrow(&source->header, rle_row); - - for (col = 0; col < cinfo->image_width; col++) { - for (channel = 0; channel < source->header.ncolors; channel++) { - *scanline++ = (JSAMPLE) - (colormap[GETJSAMPLE(rle_row[channel][col]) + 256 * channel] >> 8); - } - } - -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_counter++; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - } - break; - - case DIRECTCOLOR: - for (row = 0; row < cinfo->image_height; row++) { - scanline = * (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->image, row, (JDIMENSION) 1, TRUE); - rle_getrow(&source->header, rle_row); - - red_ptr = rle_row[0]; - green_ptr = rle_row[1]; - blue_ptr = rle_row[2]; - - for (col = cinfo->image_width; col > 0; col--) { - *scanline++ = *red_ptr++; - *scanline++ = *green_ptr++; - *scanline++ = *blue_ptr++; - } - -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_counter++; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - } - } - -#ifdef PROGRESS_REPORT - if (progress != NULL) - progress->completed_extra_passes++; -#endif - - /* Set up to call proper row-extraction routine in future */ - if (source->visual == PSEUDOCOLOR) { - source->pub.buffer = source->rle_row; - source->pub.get_pixel_rows = get_pseudocolor_row; - } else { - source->pub.get_pixel_rows = get_rle_row; - } - source->row = cinfo->image_height; - - /* And fetch the topmost (bottommost) row */ - return (*source->pub.get_pixel_rows) (cinfo, sinfo); -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_input_rle (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - /* no work */ -} - - -/* - * The module selection routine for RLE format input. - */ - -GLOBAL(cjpeg_source_ptr) -jinit_read_rle (j_compress_ptr cinfo) -{ - rle_source_ptr source; - - /* Create module interface object */ - source = (rle_source_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(rle_source_struct)); - /* Fill in method ptrs */ - source->pub.start_input = start_input_rle; - source->pub.finish_input = finish_input_rle; - source->pub.get_pixel_rows = load_image; - - return (cjpeg_source_ptr) source; -} - -#endif /* RLE_SUPPORTED */ diff --git a/project/jni/jpeg/rdswitch.c b/project/jni/jpeg/rdswitch.c deleted file mode 100644 index 4f4bb4f58..000000000 --- a/project/jni/jpeg/rdswitch.c +++ /dev/null @@ -1,332 +0,0 @@ -/* - * rdswitch.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to process some of cjpeg's more complicated - * command-line switches. Switches processed here are: - * -qtables file Read quantization tables from text file - * -scans file Read scan script from text file - * -qslots N[,N,...] Set component quantization table selectors - * -sample HxV[,HxV,...] Set component sampling factors - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ -#include /* to declare isdigit(), isspace() */ - - -LOCAL(int) -text_getc (FILE * file) -/* Read next char, skipping over any comments (# to end of line) */ -/* A comment/newline sequence is returned as a newline */ -{ - register int ch; - - ch = getc(file); - if (ch == '#') { - do { - ch = getc(file); - } while (ch != '\n' && ch != EOF); - } - return ch; -} - - -LOCAL(boolean) -read_text_integer (FILE * file, long * result, int * termchar) -/* Read an unsigned decimal integer from a file, store it in result */ -/* Reads one trailing character after the integer; returns it in termchar */ -{ - register int ch; - register long val; - - /* Skip any leading whitespace, detect EOF */ - do { - ch = text_getc(file); - if (ch == EOF) { - *termchar = ch; - return FALSE; - } - } while (isspace(ch)); - - if (! isdigit(ch)) { - *termchar = ch; - return FALSE; - } - - val = ch - '0'; - while ((ch = text_getc(file)) != EOF) { - if (! isdigit(ch)) - break; - val *= 10; - val += ch - '0'; - } - *result = val; - *termchar = ch; - return TRUE; -} - - -GLOBAL(boolean) -read_quant_tables (j_compress_ptr cinfo, char * filename, - int scale_factor, boolean force_baseline) -/* Read a set of quantization tables from the specified file. - * The file is plain ASCII text: decimal numbers with whitespace between. - * Comments preceded by '#' may be included in the file. - * There may be one to NUM_QUANT_TBLS tables in the file, each of 64 values. - * The tables are implicitly numbered 0,1,etc. - * NOTE: does not affect the qslots mapping, which will default to selecting - * table 0 for luminance (or primary) components, 1 for chrominance components. - * You must use -qslots if you want a different component->table mapping. - */ -{ - FILE * fp; - int tblno, i, termchar; - long val; - unsigned int table[DCTSIZE2]; - - if ((fp = fopen(filename, "r")) == NULL) { - fprintf(stderr, "Can't open table file %s\n", filename); - return FALSE; - } - tblno = 0; - - while (read_text_integer(fp, &val, &termchar)) { /* read 1st element of table */ - if (tblno >= NUM_QUANT_TBLS) { - fprintf(stderr, "Too many tables in file %s\n", filename); - fclose(fp); - return FALSE; - } - table[0] = (unsigned int) val; - for (i = 1; i < DCTSIZE2; i++) { - if (! read_text_integer(fp, &val, &termchar)) { - fprintf(stderr, "Invalid table data in file %s\n", filename); - fclose(fp); - return FALSE; - } - table[i] = (unsigned int) val; - } - jpeg_add_quant_table(cinfo, tblno, table, scale_factor, force_baseline); - tblno++; - } - - if (termchar != EOF) { - fprintf(stderr, "Non-numeric data in file %s\n", filename); - fclose(fp); - return FALSE; - } - - fclose(fp); - return TRUE; -} - - -#ifdef C_MULTISCAN_FILES_SUPPORTED - -LOCAL(boolean) -read_scan_integer (FILE * file, long * result, int * termchar) -/* Variant of read_text_integer that always looks for a non-space termchar; - * this simplifies parsing of punctuation in scan scripts. - */ -{ - register int ch; - - if (! read_text_integer(file, result, termchar)) - return FALSE; - ch = *termchar; - while (ch != EOF && isspace(ch)) - ch = text_getc(file); - if (isdigit(ch)) { /* oops, put it back */ - if (ungetc(ch, file) == EOF) - return FALSE; - ch = ' '; - } else { - /* Any separators other than ';' and ':' are ignored; - * this allows user to insert commas, etc, if desired. - */ - if (ch != EOF && ch != ';' && ch != ':') - ch = ' '; - } - *termchar = ch; - return TRUE; -} - - -GLOBAL(boolean) -read_scan_script (j_compress_ptr cinfo, char * filename) -/* Read a scan script from the specified text file. - * Each entry in the file defines one scan to be emitted. - * Entries are separated by semicolons ';'. - * An entry contains one to four component indexes, - * optionally followed by a colon ':' and four progressive-JPEG parameters. - * The component indexes denote which component(s) are to be transmitted - * in the current scan. The first component has index 0. - * Sequential JPEG is used if the progressive-JPEG parameters are omitted. - * The file is free format text: any whitespace may appear between numbers - * and the ':' and ';' punctuation marks. Also, other punctuation (such - * as commas or dashes) can be placed between numbers if desired. - * Comments preceded by '#' may be included in the file. - * Note: we do very little validity checking here; - * jcmaster.c will validate the script parameters. - */ -{ - FILE * fp; - int scanno, ncomps, termchar; - long val; - jpeg_scan_info * scanptr; -#define MAX_SCANS 100 /* quite arbitrary limit */ - jpeg_scan_info scans[MAX_SCANS]; - - if ((fp = fopen(filename, "r")) == NULL) { - fprintf(stderr, "Can't open scan definition file %s\n", filename); - return FALSE; - } - scanptr = scans; - scanno = 0; - - while (read_scan_integer(fp, &val, &termchar)) { - if (scanno >= MAX_SCANS) { - fprintf(stderr, "Too many scans defined in file %s\n", filename); - fclose(fp); - return FALSE; - } - scanptr->component_index[0] = (int) val; - ncomps = 1; - while (termchar == ' ') { - if (ncomps >= MAX_COMPS_IN_SCAN) { - fprintf(stderr, "Too many components in one scan in file %s\n", - filename); - fclose(fp); - return FALSE; - } - if (! read_scan_integer(fp, &val, &termchar)) - goto bogus; - scanptr->component_index[ncomps] = (int) val; - ncomps++; - } - scanptr->comps_in_scan = ncomps; - if (termchar == ':') { - if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ') - goto bogus; - scanptr->Ss = (int) val; - if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ') - goto bogus; - scanptr->Se = (int) val; - if (! read_scan_integer(fp, &val, &termchar) || termchar != ' ') - goto bogus; - scanptr->Ah = (int) val; - if (! read_scan_integer(fp, &val, &termchar)) - goto bogus; - scanptr->Al = (int) val; - } else { - /* set non-progressive parameters */ - scanptr->Ss = 0; - scanptr->Se = DCTSIZE2-1; - scanptr->Ah = 0; - scanptr->Al = 0; - } - if (termchar != ';' && termchar != EOF) { -bogus: - fprintf(stderr, "Invalid scan entry format in file %s\n", filename); - fclose(fp); - return FALSE; - } - scanptr++, scanno++; - } - - if (termchar != EOF) { - fprintf(stderr, "Non-numeric data in file %s\n", filename); - fclose(fp); - return FALSE; - } - - if (scanno > 0) { - /* Stash completed scan list in cinfo structure. - * NOTE: for cjpeg's use, JPOOL_IMAGE is the right lifetime for this data, - * but if you want to compress multiple images you'd want JPOOL_PERMANENT. - */ - scanptr = (jpeg_scan_info *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - scanno * SIZEOF(jpeg_scan_info)); - MEMCOPY(scanptr, scans, scanno * SIZEOF(jpeg_scan_info)); - cinfo->scan_info = scanptr; - cinfo->num_scans = scanno; - } - - fclose(fp); - return TRUE; -} - -#endif /* C_MULTISCAN_FILES_SUPPORTED */ - - -GLOBAL(boolean) -set_quant_slots (j_compress_ptr cinfo, char *arg) -/* Process a quantization-table-selectors parameter string, of the form - * N[,N,...] - * If there are more components than parameters, the last value is replicated. - */ -{ - int val = 0; /* default table # */ - int ci; - char ch; - - for (ci = 0; ci < MAX_COMPONENTS; ci++) { - if (*arg) { - ch = ','; /* if not set by sscanf, will be ',' */ - if (sscanf(arg, "%d%c", &val, &ch) < 1) - return FALSE; - if (ch != ',') /* syntax check */ - return FALSE; - if (val < 0 || val >= NUM_QUANT_TBLS) { - fprintf(stderr, "JPEG quantization tables are numbered 0..%d\n", - NUM_QUANT_TBLS-1); - return FALSE; - } - cinfo->comp_info[ci].quant_tbl_no = val; - while (*arg && *arg++ != ',') /* advance to next segment of arg string */ - ; - } else { - /* reached end of parameter, set remaining components to last table */ - cinfo->comp_info[ci].quant_tbl_no = val; - } - } - return TRUE; -} - - -GLOBAL(boolean) -set_sample_factors (j_compress_ptr cinfo, char *arg) -/* Process a sample-factors parameter string, of the form - * HxV[,HxV,...] - * If there are more components than parameters, "1x1" is assumed for the rest. - */ -{ - int ci, val1, val2; - char ch1, ch2; - - for (ci = 0; ci < MAX_COMPONENTS; ci++) { - if (*arg) { - ch2 = ','; /* if not set by sscanf, will be ',' */ - if (sscanf(arg, "%d%c%d%c", &val1, &ch1, &val2, &ch2) < 3) - return FALSE; - if ((ch1 != 'x' && ch1 != 'X') || ch2 != ',') /* syntax check */ - return FALSE; - if (val1 <= 0 || val1 > 4 || val2 <= 0 || val2 > 4) { - fprintf(stderr, "JPEG sampling factors must be 1..4\n"); - return FALSE; - } - cinfo->comp_info[ci].h_samp_factor = val1; - cinfo->comp_info[ci].v_samp_factor = val2; - while (*arg && *arg++ != ',') /* advance to next segment of arg string */ - ; - } else { - /* reached end of parameter, set remaining components to 1x1 sampling */ - cinfo->comp_info[ci].h_samp_factor = 1; - cinfo->comp_info[ci].v_samp_factor = 1; - } - } - return TRUE; -} diff --git a/project/jni/jpeg/rdtarga.c b/project/jni/jpeg/rdtarga.c deleted file mode 100644 index 4c2cd2673..000000000 --- a/project/jni/jpeg/rdtarga.c +++ /dev/null @@ -1,500 +0,0 @@ -/* - * rdtarga.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to read input images in Targa format. - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume input from - * an ordinary stdio stream. They further assume that reading begins - * at the start of the file; start_input may need work if the - * user interface has already read some data (e.g., to determine that - * the file is indeed Targa format). - * - * Based on code contributed by Lee Daniel Crocker. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef TARGA_SUPPORTED - - -/* Macros to deal with unsigned chars as efficiently as compiler allows */ - -#ifdef HAVE_UNSIGNED_CHAR -typedef unsigned char U_CHAR; -#define UCH(x) ((int) (x)) -#else /* !HAVE_UNSIGNED_CHAR */ -#ifdef CHAR_IS_UNSIGNED -typedef char U_CHAR; -#define UCH(x) ((int) (x)) -#else -typedef char U_CHAR; -#define UCH(x) ((int) (x) & 0xFF) -#endif -#endif /* HAVE_UNSIGNED_CHAR */ - - -#define ReadOK(file,buffer,len) (JFREAD(file,buffer,len) == ((size_t) (len))) - - -/* Private version of data source object */ - -typedef struct _tga_source_struct * tga_source_ptr; - -typedef struct _tga_source_struct { - struct cjpeg_source_struct pub; /* public fields */ - - j_compress_ptr cinfo; /* back link saves passing separate parm */ - - JSAMPARRAY colormap; /* Targa colormap (converted to my format) */ - - jvirt_sarray_ptr whole_image; /* Needed if funny input row order */ - JDIMENSION current_row; /* Current logical row number to read */ - - /* Pointer to routine to extract next Targa pixel from input file */ - JMETHOD(void, read_pixel, (tga_source_ptr sinfo)); - - /* Result of read_pixel is delivered here: */ - U_CHAR tga_pixel[4]; - - int pixel_size; /* Bytes per Targa pixel (1 to 4) */ - - /* State info for reading RLE-coded pixels; both counts must be init to 0 */ - int block_count; /* # of pixels remaining in RLE block */ - int dup_pixel_count; /* # of times to duplicate previous pixel */ - - /* This saves the correct pixel-row-expansion method for preload_image */ - JMETHOD(JDIMENSION, get_pixel_rows, (j_compress_ptr cinfo, - cjpeg_source_ptr sinfo)); -} tga_source_struct; - - -/* For expanding 5-bit pixel values to 8-bit with best rounding */ - -static const UINT8 c5to8bits[32] = { - 0, 8, 16, 25, 33, 41, 49, 58, - 66, 74, 82, 90, 99, 107, 115, 123, - 132, 140, 148, 156, 165, 173, 181, 189, - 197, 206, 214, 222, 230, 239, 247, 255 -}; - - - -LOCAL(int) -read_byte (tga_source_ptr sinfo) -/* Read next byte from Targa file */ -{ - register FILE *infile = sinfo->pub.input_file; - register int c; - - if ((c = getc(infile)) == EOF) - ERREXIT(sinfo->cinfo, JERR_INPUT_EOF); - return c; -} - - -LOCAL(void) -read_colormap (tga_source_ptr sinfo, int cmaplen, int mapentrysize) -/* Read the colormap from a Targa file */ -{ - int i; - - /* Presently only handles 24-bit BGR format */ - if (mapentrysize != 24) - ERREXIT(sinfo->cinfo, JERR_TGA_BADCMAP); - - for (i = 0; i < cmaplen; i++) { - sinfo->colormap[2][i] = (JSAMPLE) read_byte(sinfo); - sinfo->colormap[1][i] = (JSAMPLE) read_byte(sinfo); - sinfo->colormap[0][i] = (JSAMPLE) read_byte(sinfo); - } -} - - -/* - * read_pixel methods: get a single pixel from Targa file into tga_pixel[] - */ - -METHODDEF(void) -read_non_rle_pixel (tga_source_ptr sinfo) -/* Read one Targa pixel from the input file; no RLE expansion */ -{ - register FILE *infile = sinfo->pub.input_file; - register int i; - - for (i = 0; i < sinfo->pixel_size; i++) { - sinfo->tga_pixel[i] = (U_CHAR) getc(infile); - } -} - - -METHODDEF(void) -read_rle_pixel (tga_source_ptr sinfo) -/* Read one Targa pixel from the input file, expanding RLE data as needed */ -{ - register FILE *infile = sinfo->pub.input_file; - register int i; - - /* Duplicate previously read pixel? */ - if (sinfo->dup_pixel_count > 0) { - sinfo->dup_pixel_count--; - return; - } - - /* Time to read RLE block header? */ - if (--sinfo->block_count < 0) { /* decrement pixels remaining in block */ - i = read_byte(sinfo); - if (i & 0x80) { /* Start of duplicate-pixel block? */ - sinfo->dup_pixel_count = i & 0x7F; /* number of dups after this one */ - sinfo->block_count = 0; /* then read new block header */ - } else { - sinfo->block_count = i & 0x7F; /* number of pixels after this one */ - } - } - - /* Read next pixel */ - for (i = 0; i < sinfo->pixel_size; i++) { - sinfo->tga_pixel[i] = (U_CHAR) getc(infile); - } -} - - -/* - * Read one row of pixels. - * - * We provide several different versions depending on input file format. - */ - - -METHODDEF(JDIMENSION) -get_8bit_gray_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading 8-bit grayscale pixels */ -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - register JSAMPROW ptr; - register JDIMENSION col; - - ptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ - *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]); - } - return 1; -} - -METHODDEF(JDIMENSION) -get_8bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading 8-bit colormap indexes */ -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - register int t; - register JSAMPROW ptr; - register JDIMENSION col; - register JSAMPARRAY colormap = source->colormap; - - ptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ - t = UCH(source->tga_pixel[0]); - *ptr++ = colormap[0][t]; - *ptr++ = colormap[1][t]; - *ptr++ = colormap[2][t]; - } - return 1; -} - -METHODDEF(JDIMENSION) -get_16bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading 16-bit pixels */ -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - register int t; - register JSAMPROW ptr; - register JDIMENSION col; - - ptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ - t = UCH(source->tga_pixel[0]); - t += UCH(source->tga_pixel[1]) << 8; - /* We expand 5 bit data to 8 bit sample width. - * The format of the 16-bit (LSB first) input word is - * xRRRRRGGGGGBBBBB - */ - ptr[2] = (JSAMPLE) c5to8bits[t & 0x1F]; - t >>= 5; - ptr[1] = (JSAMPLE) c5to8bits[t & 0x1F]; - t >>= 5; - ptr[0] = (JSAMPLE) c5to8bits[t & 0x1F]; - ptr += 3; - } - return 1; -} - -METHODDEF(JDIMENSION) -get_24bit_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -/* This version is for reading 24-bit pixels */ -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - register JSAMPROW ptr; - register JDIMENSION col; - - ptr = source->pub.buffer[0]; - for (col = cinfo->image_width; col > 0; col--) { - (*source->read_pixel) (source); /* Load next pixel into tga_pixel */ - *ptr++ = (JSAMPLE) UCH(source->tga_pixel[2]); /* change BGR to RGB order */ - *ptr++ = (JSAMPLE) UCH(source->tga_pixel[1]); - *ptr++ = (JSAMPLE) UCH(source->tga_pixel[0]); - } - return 1; -} - -/* - * Targa also defines a 32-bit pixel format with order B,G,R,A. - * We presently ignore the attribute byte, so the code for reading - * these pixels is identical to the 24-bit routine above. - * This works because the actual pixel length is only known to read_pixel. - */ - -#define get_32bit_row get_24bit_row - - -/* - * This method is for re-reading the input data in standard top-down - * row order. The entire image has already been read into whole_image - * with proper conversion of pixel format, but it's in a funny row order. - */ - -METHODDEF(JDIMENSION) -get_memory_row (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - JDIMENSION source_row; - - /* Compute row of source that maps to current_row of normal order */ - /* For now, assume image is bottom-up and not interlaced. */ - /* NEEDS WORK to support interlaced images! */ - source_row = cinfo->image_height - source->current_row - 1; - - /* Fetch that row from virtual array */ - source->pub.buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->whole_image, - source_row, (JDIMENSION) 1, FALSE); - - source->current_row++; - return 1; -} - - -/* - * This method loads the image into whole_image during the first call on - * get_pixel_rows. The get_pixel_rows pointer is then adjusted to call - * get_memory_row on subsequent calls. - */ - -METHODDEF(JDIMENSION) -preload_image (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - JDIMENSION row; - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; - - /* Read the data into a virtual array in input-file row order. */ - for (row = 0; row < cinfo->image_height; row++) { - if (progress != NULL) { - progress->pub.pass_counter = (long) row; - progress->pub.pass_limit = (long) cinfo->image_height; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } - source->pub.buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, source->whole_image, row, (JDIMENSION) 1, TRUE); - (*source->get_pixel_rows) (cinfo, sinfo); - } - if (progress != NULL) - progress->completed_extra_passes++; - - /* Set up to read from the virtual array in unscrambled order */ - source->pub.get_pixel_rows = get_memory_row; - source->current_row = 0; - /* And read the first row */ - return get_memory_row(cinfo, sinfo); -} - - -/* - * Read the file header; return image size and component count. - */ - -METHODDEF(void) -start_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - tga_source_ptr source = (tga_source_ptr) sinfo; - U_CHAR targaheader[18]; - int idlen, cmaptype, subtype, flags, interlace_type, components; - unsigned int width, height, maplen; - boolean is_bottom_up; - -#define GET_2B(offset) ((unsigned int) UCH(targaheader[offset]) + \ - (((unsigned int) UCH(targaheader[offset+1])) << 8)) - - if (! ReadOK(source->pub.input_file, targaheader, 18)) - ERREXIT(cinfo, JERR_INPUT_EOF); - - /* Pretend "15-bit" pixels are 16-bit --- we ignore attribute bit anyway */ - if (targaheader[16] == 15) - targaheader[16] = 16; - - idlen = UCH(targaheader[0]); - cmaptype = UCH(targaheader[1]); - subtype = UCH(targaheader[2]); - maplen = GET_2B(5); - width = GET_2B(12); - height = GET_2B(14); - source->pixel_size = UCH(targaheader[16]) >> 3; - flags = UCH(targaheader[17]); /* Image Descriptor byte */ - - is_bottom_up = ((flags & 0x20) == 0); /* bit 5 set => top-down */ - interlace_type = flags >> 6; /* bits 6/7 are interlace code */ - - if (cmaptype > 1 || /* cmaptype must be 0 or 1 */ - source->pixel_size < 1 || source->pixel_size > 4 || - (UCH(targaheader[16]) & 7) != 0 || /* bits/pixel must be multiple of 8 */ - interlace_type != 0) /* currently don't allow interlaced image */ - ERREXIT(cinfo, JERR_TGA_BADPARMS); - - if (subtype > 8) { - /* It's an RLE-coded file */ - source->read_pixel = read_rle_pixel; - source->block_count = source->dup_pixel_count = 0; - subtype -= 8; - } else { - /* Non-RLE file */ - source->read_pixel = read_non_rle_pixel; - } - - /* Now should have subtype 1, 2, or 3 */ - components = 3; /* until proven different */ - cinfo->in_color_space = JCS_RGB; - - switch (subtype) { - case 1: /* Colormapped image */ - if (source->pixel_size == 1 && cmaptype == 1) - source->get_pixel_rows = get_8bit_row; - else - ERREXIT(cinfo, JERR_TGA_BADPARMS); - TRACEMS2(cinfo, 1, JTRC_TGA_MAPPED, width, height); - break; - case 2: /* RGB image */ - switch (source->pixel_size) { - case 2: - source->get_pixel_rows = get_16bit_row; - break; - case 3: - source->get_pixel_rows = get_24bit_row; - break; - case 4: - source->get_pixel_rows = get_32bit_row; - break; - default: - ERREXIT(cinfo, JERR_TGA_BADPARMS); - break; - } - TRACEMS2(cinfo, 1, JTRC_TGA, width, height); - break; - case 3: /* Grayscale image */ - components = 1; - cinfo->in_color_space = JCS_GRAYSCALE; - if (source->pixel_size == 1) - source->get_pixel_rows = get_8bit_gray_row; - else - ERREXIT(cinfo, JERR_TGA_BADPARMS); - TRACEMS2(cinfo, 1, JTRC_TGA_GRAY, width, height); - break; - default: - ERREXIT(cinfo, JERR_TGA_BADPARMS); - break; - } - - if (is_bottom_up) { - /* Create a virtual array to buffer the upside-down image. */ - source->whole_image = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - (JDIMENSION) width * components, (JDIMENSION) height, (JDIMENSION) 1); - if (cinfo->progress != NULL) { - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; - progress->total_extra_passes++; /* count file input as separate pass */ - } - /* source->pub.buffer will point to the virtual array. */ - source->pub.buffer_height = 1; /* in case anyone looks at it */ - source->pub.get_pixel_rows = preload_image; - } else { - /* Don't need a virtual array, but do need a one-row input buffer. */ - source->whole_image = NULL; - source->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - (JDIMENSION) width * components, (JDIMENSION) 1); - source->pub.buffer_height = 1; - source->pub.get_pixel_rows = source->get_pixel_rows; - } - - while (idlen--) /* Throw away ID field */ - (void) read_byte(source); - - if (maplen > 0) { - if (maplen > 256 || GET_2B(3) != 0) - ERREXIT(cinfo, JERR_TGA_BADCMAP); - /* Allocate space to store the colormap */ - source->colormap = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, (JDIMENSION) maplen, (JDIMENSION) 3); - /* and read it from the file */ - read_colormap(source, (int) maplen, UCH(targaheader[7])); - } else { - if (cmaptype) /* but you promised a cmap! */ - ERREXIT(cinfo, JERR_TGA_BADPARMS); - source->colormap = NULL; - } - - cinfo->input_components = components; - cinfo->data_precision = 8; - cinfo->image_width = width; - cinfo->image_height = height; -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_input_tga (j_compress_ptr cinfo, cjpeg_source_ptr sinfo) -{ - /* no work */ -} - - -/* - * The module selection routine for Targa format input. - */ - -GLOBAL(cjpeg_source_ptr) -jinit_read_targa (j_compress_ptr cinfo) -{ - tga_source_ptr source; - - /* Create module interface object */ - source = (tga_source_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(tga_source_struct)); - source->cinfo = cinfo; /* make back link for subroutines */ - /* Fill in method ptrs, except get_pixel_rows which start_input sets */ - source->pub.start_input = start_input_tga; - source->pub.finish_input = finish_input_tga; - - return (cjpeg_source_ptr) source; -} - -#endif /* TARGA_SUPPORTED */ diff --git a/project/jni/jpeg/structure.doc b/project/jni/jpeg/structure.doc deleted file mode 100644 index 51c9def7e..000000000 --- a/project/jni/jpeg/structure.doc +++ /dev/null @@ -1,948 +0,0 @@ -IJG JPEG LIBRARY: SYSTEM ARCHITECTURE - -Copyright (C) 1991-1995, Thomas G. Lane. -This file is part of the Independent JPEG Group's software. -For conditions of distribution and use, see the accompanying README file. - - -This file provides an overview of the architecture of the IJG JPEG software; -that is, the functions of the various modules in the system and the interfaces -between modules. For more precise details about any data structure or calling -convention, see the include files and comments in the source code. - -We assume that the reader is already somewhat familiar with the JPEG standard. -The README file includes references for learning about JPEG. The file -libjpeg.doc describes the library from the viewpoint of an application -programmer using the library; it's best to read that file before this one. -Also, the file coderules.doc describes the coding style conventions we use. - -In this document, JPEG-specific terminology follows the JPEG standard: - A "component" means a color channel, e.g., Red or Luminance. - A "sample" is a single component value (i.e., one number in the image data). - A "coefficient" is a frequency coefficient (a DCT transform output number). - A "block" is an 8x8 group of samples or coefficients. - An "MCU" (minimum coded unit) is an interleaved set of blocks of size - determined by the sampling factors, or a single block in a - noninterleaved scan. -We do not use the terms "pixel" and "sample" interchangeably. When we say -pixel, we mean an element of the full-size image, while a sample is an element -of the downsampled image. Thus the number of samples may vary across -components while the number of pixels does not. (This terminology is not used -rigorously throughout the code, but it is used in places where confusion would -otherwise result.) - - -*** System features *** - -The IJG distribution contains two parts: - * A subroutine library for JPEG compression and decompression. - * cjpeg/djpeg, two sample applications that use the library to transform - JFIF JPEG files to and from several other image formats. -cjpeg/djpeg are of no great intellectual complexity: they merely add a simple -command-line user interface and I/O routines for several uncompressed image -formats. This document concentrates on the library itself. - -We desire the library to be capable of supporting all JPEG baseline, extended -sequential, and progressive DCT processes. Hierarchical processes are not -supported. - -The library does not support the lossless (spatial) JPEG process. Lossless -JPEG shares little or no code with lossy JPEG, and would normally be used -without the extensive pre- and post-processing provided by this library. -We feel that lossless JPEG is better handled by a separate library. - -Within these limits, any set of compression parameters allowed by the JPEG -spec should be readable for decompression. (We can be more restrictive about -what formats we can generate.) Although the system design allows for all -parameter values, some uncommon settings are not yet implemented and may -never be; nonintegral sampling ratios are the prime example. Furthermore, -we treat 8-bit vs. 12-bit data precision as a compile-time switch, not a -run-time option, because most machines can store 8-bit pixels much more -compactly than 12-bit. - -For legal reasons, JPEG arithmetic coding is not currently supported, but -extending the library to include it would be straightforward. - -By itself, the library handles only interchange JPEG datastreams --- in -particular the widely used JFIF file format. The library can be used by -surrounding code to process interchange or abbreviated JPEG datastreams that -are embedded in more complex file formats. (For example, libtiff uses this -library to implement JPEG compression within the TIFF file format.) - -The library includes a substantial amount of code that is not covered by the -JPEG standard but is necessary for typical applications of JPEG. These -functions preprocess the image before JPEG compression or postprocess it after -decompression. They include colorspace conversion, downsampling/upsampling, -and color quantization. This code can be omitted if not needed. - -A wide range of quality vs. speed tradeoffs are possible in JPEG processing, -and even more so in decompression postprocessing. The decompression library -provides multiple implementations that cover most of the useful tradeoffs, -ranging from very-high-quality down to fast-preview operation. On the -compression side we have generally not provided low-quality choices, since -compression is normally less time-critical. It should be understood that the -low-quality modes may not meet the JPEG standard's accuracy requirements; -nonetheless, they are useful for viewers. - - -*** Portability issues *** - -Portability is an essential requirement for the library. The key portability -issues that show up at the level of system architecture are: - -1. Memory usage. We want the code to be able to run on PC-class machines -with limited memory. Images should therefore be processed sequentially (in -strips), to avoid holding the whole image in memory at once. Where a -full-image buffer is necessary, we should be able to use either virtual memory -or temporary files. - -2. Near/far pointer distinction. To run efficiently on 80x86 machines, the -code should distinguish "small" objects (kept in near data space) from -"large" ones (kept in far data space). This is an annoying restriction, but -fortunately it does not impact code quality for less brain-damaged machines, -and the source code clutter turns out to be minimal with sufficient use of -pointer typedefs. - -3. Data precision. We assume that "char" is at least 8 bits, "short" and -"int" at least 16, "long" at least 32. The code will work fine with larger -data sizes, although memory may be used inefficiently in some cases. However, -the JPEG compressed datastream must ultimately appear on external storage as a -sequence of 8-bit bytes if it is to conform to the standard. This may pose a -problem on machines where char is wider than 8 bits. The library represents -compressed data as an array of values of typedef JOCTET. If no data type -exactly 8 bits wide is available, custom data source and data destination -modules must be written to unpack and pack the chosen JOCTET datatype into -8-bit external representation. - - -*** System overview *** - -The compressor and decompressor are each divided into two main sections: -the JPEG compressor or decompressor proper, and the preprocessing or -postprocessing functions. The interface between these two sections is the -image data that the official JPEG spec regards as its input or output: this -data is in the colorspace to be used for compression, and it is downsampled -to the sampling factors to be used. The preprocessing and postprocessing -steps are responsible for converting a normal image representation to or from -this form. (Those few applications that want to deal with YCbCr downsampled -data can skip the preprocessing or postprocessing step.) - -Looking more closely, the compressor library contains the following main -elements: - - Preprocessing: - * Color space conversion (e.g., RGB to YCbCr). - * Edge expansion and downsampling. Optionally, this step can do simple - smoothing --- this is often helpful for low-quality source data. - JPEG proper: - * MCU assembly, DCT, quantization. - * Entropy coding (sequential or progressive, Huffman or arithmetic). - -In addition to these modules we need overall control, marker generation, -and support code (memory management & error handling). There is also a -module responsible for physically writing the output data --- typically -this is just an interface to fwrite(), but some applications may need to -do something else with the data. - -The decompressor library contains the following main elements: - - JPEG proper: - * Entropy decoding (sequential or progressive, Huffman or arithmetic). - * Dequantization, inverse DCT, MCU disassembly. - Postprocessing: - * Upsampling. Optionally, this step may be able to do more general - rescaling of the image. - * Color space conversion (e.g., YCbCr to RGB). This step may also - provide gamma adjustment [ currently it does not ]. - * Optional color quantization (e.g., reduction to 256 colors). - * Optional color precision reduction (e.g., 24-bit to 15-bit color). - [This feature is not currently implemented.] - -We also need overall control, marker parsing, and a data source module. -The support code (memory management & error handling) can be shared with -the compression half of the library. - -There may be several implementations of each of these elements, particularly -in the decompressor, where a wide range of speed/quality tradeoffs is very -useful. It must be understood that some of the best speedups involve -merging adjacent steps in the pipeline. For example, upsampling, color space -conversion, and color quantization might all be done at once when using a -low-quality ordered-dither technique. The system architecture is designed to -allow such merging where appropriate. - - -Note: it is convenient to regard edge expansion (padding to block boundaries) -as a preprocessing/postprocessing function, even though the JPEG spec includes -it in compression/decompression. We do this because downsampling/upsampling -can be simplified a little if they work on padded data: it's not necessary to -have special cases at the right and bottom edges. Therefore the interface -buffer is always an integral number of blocks wide and high, and we expect -compression preprocessing to pad the source data properly. Padding will occur -only to the next block (8-sample) boundary. In an interleaved-scan situation, -additional dummy blocks may be used to fill out MCUs, but the MCU assembly and -disassembly logic will create or discard these blocks internally. (This is -advantageous for speed reasons, since we avoid DCTing the dummy blocks. -It also permits a small reduction in file size, because the compressor can -choose dummy block contents so as to minimize their size in compressed form. -Finally, it makes the interface buffer specification independent of whether -the file is actually interleaved or not.) Applications that wish to deal -directly with the downsampled data must provide similar buffering and padding -for odd-sized images. - - -*** Poor man's object-oriented programming *** - -It should be clear by now that we have a lot of quasi-independent processing -steps, many of which have several possible behaviors. To avoid cluttering the -code with lots of switch statements, we use a simple form of object-style -programming to separate out the different possibilities. - -For example, two different color quantization algorithms could be implemented -as two separate modules that present the same external interface; at runtime, -the calling code will access the proper module indirectly through an "object". - -We can get the limited features we need while staying within portable C. -The basic tool is a function pointer. An "object" is just a struct -containing one or more function pointer fields, each of which corresponds to -a method name in real object-oriented languages. During initialization we -fill in the function pointers with references to whichever module we have -determined we need to use in this run. Then invocation of the module is done -by indirecting through a function pointer; on most machines this is no more -expensive than a switch statement, which would be the only other way of -making the required run-time choice. The really significant benefit, of -course, is keeping the source code clean and well structured. - -We can also arrange to have private storage that varies between different -implementations of the same kind of object. We do this by making all the -module-specific object structs be separately allocated entities, which will -be accessed via pointers in the master compression or decompression struct. -The "public" fields or methods for a given kind of object are specified by -a commonly known struct. But a module's initialization code can allocate -a larger struct that contains the common struct as its first member, plus -additional private fields. With appropriate pointer casting, the module's -internal functions can access these private fields. (For a simple example, -see jdatadst.c, which implements the external interface specified by struct -jpeg_destination_mgr, but adds extra fields.) - -(Of course this would all be a lot easier if we were using C++, but we are -not yet prepared to assume that everyone has a C++ compiler.) - -An important benefit of this scheme is that it is easy to provide multiple -versions of any method, each tuned to a particular case. While a lot of -precalculation might be done to select an optimal implementation of a method, -the cost per invocation is constant. For example, the upsampling step might -have a "generic" method, plus one or more "hardwired" methods for the most -popular sampling factors; the hardwired methods would be faster because they'd -use straight-line code instead of for-loops. The cost to determine which -method to use is paid only once, at startup, and the selection criteria are -hidden from the callers of the method. - -This plan differs a little bit from usual object-oriented structures, in that -only one instance of each object class will exist during execution. The -reason for having the class structure is that on different runs we may create -different instances (choose to execute different modules). You can think of -the term "method" as denoting the common interface presented by a particular -set of interchangeable functions, and "object" as denoting a group of related -methods, or the total shared interface behavior of a group of modules. - - -*** Overall control structure *** - -We previously mentioned the need for overall control logic in the compression -and decompression libraries. In IJG implementations prior to v5, overall -control was mostly provided by "pipeline control" modules, which proved to be -large, unwieldy, and hard to understand. To improve the situation, the -control logic has been subdivided into multiple modules. The control modules -consist of: - -1. Master control for module selection and initialization. This has two -responsibilities: - - 1A. Startup initialization at the beginning of image processing. - The individual processing modules to be used in this run are selected - and given initialization calls. - - 1B. Per-pass control. This determines how many passes will be performed - and calls each active processing module to configure itself - appropriately at the beginning of each pass. End-of-pass processing, - where necessary, is also invoked from the master control module. - - Method selection is partially distributed, in that a particular processing - module may contain several possible implementations of a particular method, - which it will select among when given its initialization call. The master - control code need only be concerned with decisions that affect more than - one module. - -2. Data buffering control. A separate control module exists for each - inter-processing-step data buffer. This module is responsible for - invoking the processing steps that write or read that data buffer. - -Each buffer controller sees the world as follows: - -input data => processing step A => buffer => processing step B => output data - | | | - ------------------ controller ------------------ - -The controller knows the dataflow requirements of steps A and B: how much data -they want to accept in one chunk and how much they output in one chunk. Its -function is to manage its buffer and call A and B at the proper times. - -A data buffer control module may itself be viewed as a processing step by a -higher-level control module; thus the control modules form a binary tree with -elementary processing steps at the leaves of the tree. - -The control modules are objects. A considerable amount of flexibility can -be had by replacing implementations of a control module. For example: -* Merging of adjacent steps in the pipeline is done by replacing a control - module and its pair of processing-step modules with a single processing- - step module. (Hence the possible merges are determined by the tree of - control modules.) -* In some processing modes, a given interstep buffer need only be a "strip" - buffer large enough to accommodate the desired data chunk sizes. In other - modes, a full-image buffer is needed and several passes are required. - The control module determines which kind of buffer is used and manipulates - virtual array buffers as needed. One or both processing steps may be - unaware of the multi-pass behavior. - -In theory, we might be able to make all of the data buffer controllers -interchangeable and provide just one set of implementations for all. In -practice, each one contains considerable special-case processing for its -particular job. The buffer controller concept should be regarded as an -overall system structuring principle, not as a complete description of the -task performed by any one controller. - - -*** Compression object structure *** - -Here is a sketch of the logical structure of the JPEG compression library: - - |-- Colorspace conversion - |-- Preprocessing controller --| - | |-- Downsampling -Main controller --| - | |-- Forward DCT, quantize - |-- Coefficient controller --| - |-- Entropy encoding - -This sketch also describes the flow of control (subroutine calls) during -typical image data processing. Each of the components shown in the diagram is -an "object" which may have several different implementations available. One -or more source code files contain the actual implementation(s) of each object. - -The objects shown above are: - -* Main controller: buffer controller for the subsampled-data buffer, which - holds the preprocessed input data. This controller invokes preprocessing to - fill the subsampled-data buffer, and JPEG compression to empty it. There is - usually no need for a full-image buffer here; a strip buffer is adequate. - -* Preprocessing controller: buffer controller for the downsampling input data - buffer, which lies between colorspace conversion and downsampling. Note - that a unified conversion/downsampling module would probably replace this - controller entirely. - -* Colorspace conversion: converts application image data into the desired - JPEG color space; also changes the data from pixel-interleaved layout to - separate component planes. Processes one pixel row at a time. - -* Downsampling: performs reduction of chroma components as required. - Optionally may perform pixel-level smoothing as well. Processes a "row - group" at a time, where a row group is defined as Vmax pixel rows of each - component before downsampling, and Vk sample rows afterwards (remember Vk - differs across components). Some downsampling or smoothing algorithms may - require context rows above and below the current row group; the - preprocessing controller is responsible for supplying these rows via proper - buffering. The downsampler is responsible for edge expansion at the right - edge (i.e., extending each sample row to a multiple of 8 samples); but the - preprocessing controller is responsible for vertical edge expansion (i.e., - duplicating the bottom sample row as needed to make a multiple of 8 rows). - -* Coefficient controller: buffer controller for the DCT-coefficient data. - This controller handles MCU assembly, including insertion of dummy DCT - blocks when needed at the right or bottom edge. When performing - Huffman-code optimization or emitting a multiscan JPEG file, this - controller is responsible for buffering the full image. The equivalent of - one fully interleaved MCU row of subsampled data is processed per call, - even when the JPEG file is noninterleaved. - -* Forward DCT and quantization: Perform DCT, quantize, and emit coefficients. - Works on one or more DCT blocks at a time. (Note: the coefficients are now - emitted in normal array order, which the entropy encoder is expected to - convert to zigzag order as necessary. Prior versions of the IJG code did - the conversion to zigzag order within the quantization step.) - -* Entropy encoding: Perform Huffman or arithmetic entropy coding and emit the - coded data to the data destination module. Works on one MCU per call. - For progressive JPEG, the same DCT blocks are fed to the entropy coder - during each pass, and the coder must emit the appropriate subset of - coefficients. - -In addition to the above objects, the compression library includes these -objects: - -* Master control: determines the number of passes required, controls overall - and per-pass initialization of the other modules. - -* Marker writing: generates JPEG markers (except for RSTn, which is emitted - by the entropy encoder when needed). - -* Data destination manager: writes the output JPEG datastream to its final - destination (e.g., a file). The destination manager supplied with the - library knows how to write to a stdio stream; for other behaviors, the - surrounding application may provide its own destination manager. - -* Memory manager: allocates and releases memory, controls virtual arrays - (with backing store management, where required). - -* Error handler: performs formatting and output of error and trace messages; - determines handling of nonfatal errors. The surrounding application may - override some or all of this object's methods to change error handling. - -* Progress monitor: supports output of "percent-done" progress reports. - This object represents an optional callback to the surrounding application: - if wanted, it must be supplied by the application. - -The error handler, destination manager, and progress monitor objects are -defined as separate objects in order to simplify application-specific -customization of the JPEG library. A surrounding application may override -individual methods or supply its own all-new implementation of one of these -objects. The object interfaces for these objects are therefore treated as -part of the application interface of the library, whereas the other objects -are internal to the library. - -The error handler and memory manager are shared by JPEG compression and -decompression; the progress monitor, if used, may be shared as well. - - -*** Decompression object structure *** - -Here is a sketch of the logical structure of the JPEG decompression library: - - |-- Entropy decoding - |-- Coefficient controller --| - | |-- Dequantize, Inverse DCT -Main controller --| - | |-- Upsampling - |-- Postprocessing controller --| |-- Colorspace conversion - |-- Color quantization - |-- Color precision reduction - -As before, this diagram also represents typical control flow. The objects -shown are: - -* Main controller: buffer controller for the subsampled-data buffer, which - holds the output of JPEG decompression proper. This controller's primary - task is to feed the postprocessing procedure. Some upsampling algorithms - may require context rows above and below the current row group; when this - is true, the main controller is responsible for managing its buffer so as - to make context rows available. In the current design, the main buffer is - always a strip buffer; a full-image buffer is never required. - -* Coefficient controller: buffer controller for the DCT-coefficient data. - This controller handles MCU disassembly, including deletion of any dummy - DCT blocks at the right or bottom edge. When reading a multiscan JPEG - file, this controller is responsible for buffering the full image. - (Buffering DCT coefficients, rather than samples, is necessary to support - progressive JPEG.) The equivalent of one fully interleaved MCU row of - subsampled data is processed per call, even when the source JPEG file is - noninterleaved. - -* Entropy decoding: Read coded data from the data source module and perform - Huffman or arithmetic entropy decoding. Works on one MCU per call. - For progressive JPEG decoding, the coefficient controller supplies the prior - coefficients of each MCU (initially all zeroes), which the entropy decoder - modifies in each scan. - -* Dequantization and inverse DCT: like it says. Note that the coefficients - buffered by the coefficient controller have NOT been dequantized; we - merge dequantization and inverse DCT into a single step for speed reasons. - When scaled-down output is asked for, simplified DCT algorithms may be used - that emit only 1x1, 2x2, or 4x4 samples per DCT block, not the full 8x8. - Works on one DCT block at a time. - -* Postprocessing controller: buffer controller for the color quantization - input buffer, when quantization is in use. (Without quantization, this - controller just calls the upsampler.) For two-pass quantization, this - controller is responsible for buffering the full-image data. - -* Upsampling: restores chroma components to full size. (May support more - general output rescaling, too. Note that if undersized DCT outputs have - been emitted by the DCT module, this module must adjust so that properly - sized outputs are created.) Works on one row group at a time. This module - also calls the color conversion module, so its top level is effectively a - buffer controller for the upsampling->color conversion buffer. However, in - all but the highest-quality operating modes, upsampling and color - conversion are likely to be merged into a single step. - -* Colorspace conversion: convert from JPEG color space to output color space, - and change data layout from separate component planes to pixel-interleaved. - Works on one pixel row at a time. - -* Color quantization: reduce the data to colormapped form, using either an - externally specified colormap or an internally generated one. This module - is not used for full-color output. Works on one pixel row at a time; may - require two passes to generate a color map. Note that the output will - always be a single component representing colormap indexes. In the current - design, the output values are JSAMPLEs, so an 8-bit compilation cannot - quantize to more than 256 colors. This is unlikely to be a problem in - practice. - -* Color reduction: this module handles color precision reduction, e.g., - generating 15-bit color (5 bits/primary) from JPEG's 24-bit output. - Not quite clear yet how this should be handled... should we merge it with - colorspace conversion??? - -Note that some high-speed operating modes might condense the entire -postprocessing sequence to a single module (upsample, color convert, and -quantize in one step). - -In addition to the above objects, the decompression library includes these -objects: - -* Master control: determines the number of passes required, controls overall - and per-pass initialization of the other modules. This is subdivided into - input and output control: jdinput.c controls only input-side processing, - while jdmaster.c handles overall initialization and output-side control. - -* Marker reading: decodes JPEG markers (except for RSTn). - -* Data source manager: supplies the input JPEG datastream. The source - manager supplied with the library knows how to read from a stdio stream; - for other behaviors, the surrounding application may provide its own source - manager. - -* Memory manager: same as for compression library. - -* Error handler: same as for compression library. - -* Progress monitor: same as for compression library. - -As with compression, the data source manager, error handler, and progress -monitor are candidates for replacement by a surrounding application. - - -*** Decompression input and output separation *** - -To support efficient incremental display of progressive JPEG files, the -decompressor is divided into two sections that can run independently: - -1. Data input includes marker parsing, entropy decoding, and input into the - coefficient controller's DCT coefficient buffer. Note that this - processing is relatively cheap and fast. - -2. Data output reads from the DCT coefficient buffer and performs the IDCT - and all postprocessing steps. - -For a progressive JPEG file, the data input processing is allowed to get -arbitrarily far ahead of the data output processing. (This occurs only -if the application calls jpeg_consume_input(); otherwise input and output -run in lockstep, since the input section is called only when the output -section needs more data.) In this way the application can avoid making -extra display passes when data is arriving faster than the display pass -can run. Furthermore, it is possible to abort an output pass without -losing anything, since the coefficient buffer is read-only as far as the -output section is concerned. See libjpeg.doc for more detail. - -A full-image coefficient array is only created if the JPEG file has multiple -scans (or if the application specifies buffered-image mode anyway). When -reading a single-scan file, the coefficient controller normally creates only -a one-MCU buffer, so input and output processing must run in lockstep in this -case. jpeg_consume_input() is effectively a no-op in this situation. - -The main impact of dividing the decompressor in this fashion is that we must -be very careful with shared variables in the cinfo data structure. Each -variable that can change during the course of decompression must be -classified as belonging to data input or data output, and each section must -look only at its own variables. For example, the data output section may not -depend on any of the variables that describe the current scan in the JPEG -file, because these may change as the data input section advances into a new -scan. - -The progress monitor is (somewhat arbitrarily) defined to treat input of the -file as one pass when buffered-image mode is not used, and to ignore data -input work completely when buffered-image mode is used. Note that the -library has no reliable way to predict the number of passes when dealing -with a progressive JPEG file, nor can it predict the number of output passes -in buffered-image mode. So the work estimate is inherently bogus anyway. - -No comparable division is currently made in the compression library, because -there isn't any real need for it. - - -*** Data formats *** - -Arrays of pixel sample values use the following data structure: - - typedef something JSAMPLE; a pixel component value, 0..MAXJSAMPLE - typedef JSAMPLE *JSAMPROW; ptr to a row of samples - typedef JSAMPROW *JSAMPARRAY; ptr to a list of rows - typedef JSAMPARRAY *JSAMPIMAGE; ptr to a list of color-component arrays - -The basic element type JSAMPLE will typically be one of unsigned char, -(signed) char, or short. Short will be used if samples wider than 8 bits are -to be supported (this is a compile-time option). Otherwise, unsigned char is -used if possible. If the compiler only supports signed chars, then it is -necessary to mask off the value when reading. Thus, all reads of JSAMPLE -values must be coded as "GETJSAMPLE(value)", where the macro will be defined -as "((value) & 0xFF)" on signed-char machines and "((int) (value))" elsewhere. - -With these conventions, JSAMPLE values can be assumed to be >= 0. This helps -simplify correct rounding during downsampling, etc. The JPEG standard's -specification that sample values run from -128..127 is accommodated by -subtracting 128 just as the sample value is copied into the source array for -the DCT step (this will be an array of signed ints). Similarly, during -decompression the output of the IDCT step will be immediately shifted back to -0..255. (NB: different values are required when 12-bit samples are in use. -The code is written in terms of MAXJSAMPLE and CENTERJSAMPLE, which will be -defined as 255 and 128 respectively in an 8-bit implementation, and as 4095 -and 2048 in a 12-bit implementation.) - -We use a pointer per row, rather than a two-dimensional JSAMPLE array. This -choice costs only a small amount of memory and has several benefits: -* Code using the data structure doesn't need to know the allocated width of - the rows. This simplifies edge expansion/compression, since we can work - in an array that's wider than the logical picture width. -* Indexing doesn't require multiplication; this is a performance win on many - machines. -* Arrays with more than 64K total elements can be supported even on machines - where malloc() cannot allocate chunks larger than 64K. -* The rows forming a component array may be allocated at different times - without extra copying. This trick allows some speedups in smoothing steps - that need access to the previous and next rows. - -Note that each color component is stored in a separate array; we don't use the -traditional layout in which the components of a pixel are stored together. -This simplifies coding of modules that work on each component independently, -because they don't need to know how many components there are. Furthermore, -we can read or write each component to a temporary file independently, which -is helpful when dealing with noninterleaved JPEG files. - -In general, a specific sample value is accessed by code such as - GETJSAMPLE(image[colorcomponent][row][col]) -where col is measured from the image left edge, but row is measured from the -first sample row currently in memory. Either of the first two indexings can -be precomputed by copying the relevant pointer. - - -Since most image-processing applications prefer to work on images in which -the components of a pixel are stored together, the data passed to or from the -surrounding application uses the traditional convention: a single pixel is -represented by N consecutive JSAMPLE values, and an image row is an array of -(# of color components)*(image width) JSAMPLEs. One or more rows of data can -be represented by a pointer of type JSAMPARRAY in this scheme. This scheme is -converted to component-wise storage inside the JPEG library. (Applications -that want to skip JPEG preprocessing or postprocessing will have to contend -with component-wise storage.) - - -Arrays of DCT-coefficient values use the following data structure: - - typedef short JCOEF; a 16-bit signed integer - typedef JCOEF JBLOCK[DCTSIZE2]; an 8x8 block of coefficients - typedef JBLOCK *JBLOCKROW; ptr to one horizontal row of 8x8 blocks - typedef JBLOCKROW *JBLOCKARRAY; ptr to a list of such rows - typedef JBLOCKARRAY *JBLOCKIMAGE; ptr to a list of color component arrays - -The underlying type is at least a 16-bit signed integer; while "short" is big -enough on all machines of interest, on some machines it is preferable to use -"int" for speed reasons, despite the storage cost. Coefficients are grouped -into 8x8 blocks (but we always use #defines DCTSIZE and DCTSIZE2 rather than -"8" and "64"). - -The contents of a coefficient block may be in either "natural" or zigzagged -order, and may be true values or divided by the quantization coefficients, -depending on where the block is in the processing pipeline. In the current -library, coefficient blocks are kept in natural order everywhere; the entropy -codecs zigzag or dezigzag the data as it is written or read. The blocks -contain quantized coefficients everywhere outside the DCT/IDCT subsystems. -(This latter decision may need to be revisited to support variable -quantization a la JPEG Part 3.) - -Notice that the allocation unit is now a row of 8x8 blocks, corresponding to -eight rows of samples. Otherwise the structure is much the same as for -samples, and for the same reasons. - -On machines where malloc() can't handle a request bigger than 64Kb, this data -structure limits us to rows of less than 512 JBLOCKs, or a picture width of -4000+ pixels. This seems an acceptable restriction. - - -On 80x86 machines, the bottom-level pointer types (JSAMPROW and JBLOCKROW) -must be declared as "far" pointers, but the upper levels can be "near" -(implying that the pointer lists are allocated in the DS segment). -We use a #define symbol FAR, which expands to the "far" keyword when -compiling on 80x86 machines and to nothing elsewhere. - - -*** Suspendable processing *** - -In some applications it is desirable to use the JPEG library as an -incremental, memory-to-memory filter. In this situation the data source or -destination may be a limited-size buffer, and we can't rely on being able to -empty or refill the buffer at arbitrary times. Instead the application would -like to have control return from the library at buffer overflow/underrun, and -then resume compression or decompression at a later time. - -This scenario is supported for simple cases. (For anything more complex, we -recommend that the application "bite the bullet" and develop real multitasking -capability.) The libjpeg.doc file goes into more detail about the usage and -limitations of this capability; here we address the implications for library -structure. - -The essence of the problem is that the entropy codec (coder or decoder) must -be prepared to stop at arbitrary times. In turn, the controllers that call -the entropy codec must be able to stop before having produced or consumed all -the data that they normally would handle in one call. That part is reasonably -straightforward: we make the controller call interfaces include "progress -counters" which indicate the number of data chunks successfully processed, and -we require callers to test the counter rather than just assume all of the data -was processed. - -Rather than trying to restart at an arbitrary point, the current Huffman -codecs are designed to restart at the beginning of the current MCU after a -suspension due to buffer overflow/underrun. At the start of each call, the -codec's internal state is loaded from permanent storage (in the JPEG object -structures) into local variables. On successful completion of the MCU, the -permanent state is updated. (This copying is not very expensive, and may even -lead to *improved* performance if the local variables can be registerized.) -If a suspension occurs, the codec simply returns without updating the state, -thus effectively reverting to the start of the MCU. Note that this implies -leaving some data unprocessed in the source/destination buffer (ie, the -compressed partial MCU). The data source/destination module interfaces are -specified so as to make this possible. This also implies that the data buffer -must be large enough to hold a worst-case compressed MCU; a couple thousand -bytes should be enough. - -In a successive-approximation AC refinement scan, the progressive Huffman -decoder has to be able to undo assignments of newly nonzero coefficients if it -suspends before the MCU is complete, since decoding requires distinguishing -previously-zero and previously-nonzero coefficients. This is a bit tedious -but probably won't have much effect on performance. Other variants of Huffman -decoding need not worry about this, since they will just store the same values -again if forced to repeat the MCU. - -This approach would probably not work for an arithmetic codec, since its -modifiable state is quite large and couldn't be copied cheaply. Instead it -would have to suspend and resume exactly at the point of the buffer end. - -The JPEG marker reader is designed to cope with suspension at an arbitrary -point. It does so by backing up to the start of the marker parameter segment, -so the data buffer must be big enough to hold the largest marker of interest. -Again, a couple KB should be adequate. (A special "skip" convention is used -to bypass COM and APPn markers, so these can be larger than the buffer size -without causing problems; otherwise a 64K buffer would be needed in the worst -case.) - -The JPEG marker writer currently does *not* cope with suspension. I feel that -this is not necessary; it is much easier simply to require the application to -ensure there is enough buffer space before starting. (An empty 2K buffer is -more than sufficient for the header markers; and ensuring there are a dozen or -two bytes available before calling jpeg_finish_compress() will suffice for the -trailer.) This would not work for writing multi-scan JPEG files, but -we simply do not intend to support that capability with suspension. - - -*** Memory manager services *** - -The JPEG library's memory manager controls allocation and deallocation of -memory, and it manages large "virtual" data arrays on machines where the -operating system does not provide virtual memory. Note that the same -memory manager serves both compression and decompression operations. - -In all cases, allocated objects are tied to a particular compression or -decompression master record, and they will be released when that master -record is destroyed. - -The memory manager does not provide explicit deallocation of objects. -Instead, objects are created in "pools" of free storage, and a whole pool -can be freed at once. This approach helps prevent storage-leak bugs, and -it speeds up operations whenever malloc/free are slow (as they often are). -The pools can be regarded as lifetime identifiers for objects. Two -pools/lifetimes are defined: - * JPOOL_PERMANENT lasts until master record is destroyed - * JPOOL_IMAGE lasts until done with image (JPEG datastream) -Permanent lifetime is used for parameters and tables that should be carried -across from one datastream to another; this includes all application-visible -parameters. Image lifetime is used for everything else. (A third lifetime, -JPOOL_PASS = one processing pass, was originally planned. However it was -dropped as not being worthwhile. The actual usage patterns are such that the -peak memory usage would be about the same anyway; and having per-pass storage -substantially complicates the virtual memory allocation rules --- see below.) - -The memory manager deals with three kinds of object: -1. "Small" objects. Typically these require no more than 10K-20K total. -2. "Large" objects. These may require tens to hundreds of K depending on - image size. Semantically they behave the same as small objects, but we - distinguish them for two reasons: - * On MS-DOS machines, large objects are referenced by FAR pointers, - small objects by NEAR pointers. - * Pool allocation heuristics may differ for large and small objects. - Note that individual "large" objects cannot exceed the size allowed by - type size_t, which may be 64K or less on some machines. -3. "Virtual" objects. These are large 2-D arrays of JSAMPLEs or JBLOCKs - (typically large enough for the entire image being processed). The - memory manager provides stripwise access to these arrays. On machines - without virtual memory, the rest of the array may be swapped out to a - temporary file. - -(Note: JSAMPARRAY and JBLOCKARRAY data structures are a combination of large -objects for the data proper and small objects for the row pointers. For -convenience and speed, the memory manager provides single routines to create -these structures. Similarly, virtual arrays include a small control block -and a JSAMPARRAY or JBLOCKARRAY working buffer, all created with one call.) - -In the present implementation, virtual arrays are only permitted to have image -lifespan. (Permanent lifespan would not be reasonable, and pass lifespan is -not very useful since a virtual array's raison d'etre is to store data for -multiple passes through the image.) We also expect that only "small" objects -will be given permanent lifespan, though this restriction is not required by -the memory manager. - -In a non-virtual-memory machine, some performance benefit can be gained by -making the in-memory buffers for virtual arrays be as large as possible. -(For small images, the buffers might fit entirely in memory, so blind -swapping would be very wasteful.) The memory manager will adjust the height -of the buffers to fit within a prespecified maximum memory usage. In order -to do this in a reasonably optimal fashion, the manager needs to allocate all -of the virtual arrays at once. Therefore, there isn't a one-step allocation -routine for virtual arrays; instead, there is a "request" routine that simply -allocates the control block, and a "realize" routine (called just once) that -determines space allocation and creates all of the actual buffers. The -realize routine must allow for space occupied by non-virtual large objects. -(We don't bother to factor in the space needed for small objects, on the -grounds that it isn't worth the trouble.) - -To support all this, we establish the following protocol for doing business -with the memory manager: - 1. Modules must request virtual arrays (which may have only image lifespan) - during the initial setup phase, i.e., in their jinit_xxx routines. - 2. All "large" objects (including JSAMPARRAYs and JBLOCKARRAYs) must also be - allocated during initial setup. - 3. realize_virt_arrays will be called at the completion of initial setup. - The above conventions ensure that sufficient information is available - for it to choose a good size for virtual array buffers. -Small objects of any lifespan may be allocated at any time. We expect that -the total space used for small objects will be small enough to be negligible -in the realize_virt_arrays computation. - -In a virtual-memory machine, we simply pretend that the available space is -infinite, thus causing realize_virt_arrays to decide that it can allocate all -the virtual arrays as full-size in-memory buffers. The overhead of the -virtual-array access protocol is very small when no swapping occurs. - -A virtual array can be specified to be "pre-zeroed"; when this flag is set, -never-yet-written sections of the array are set to zero before being made -available to the caller. If this flag is not set, never-written sections -of the array contain garbage. (This feature exists primarily because the -equivalent logic would otherwise be needed in jdcoefct.c for progressive -JPEG mode; we may as well make it available for possible other uses.) - -The first write pass on a virtual array is required to occur in top-to-bottom -order; read passes, as well as any write passes after the first one, may -access the array in any order. This restriction exists partly to simplify -the virtual array control logic, and partly because some file systems may not -support seeking beyond the current end-of-file in a temporary file. The main -implication of this restriction is that rearrangement of rows (such as -converting top-to-bottom data order to bottom-to-top) must be handled while -reading data out of the virtual array, not while putting it in. - - -*** Memory manager internal structure *** - -To isolate system dependencies as much as possible, we have broken the -memory manager into two parts. There is a reasonably system-independent -"front end" (jmemmgr.c) and a "back end" that contains only the code -likely to change across systems. All of the memory management methods -outlined above are implemented by the front end. The back end provides -the following routines for use by the front end (none of these routines -are known to the rest of the JPEG code): - -jpeg_mem_init, jpeg_mem_term system-dependent initialization/shutdown - -jpeg_get_small, jpeg_free_small interface to malloc and free library routines - (or their equivalents) - -jpeg_get_large, jpeg_free_large interface to FAR malloc/free in MSDOS machines; - else usually the same as - jpeg_get_small/jpeg_free_small - -jpeg_mem_available estimate available memory - -jpeg_open_backing_store create a backing-store object - -read_backing_store, manipulate a backing-store object -write_backing_store, -close_backing_store - -On some systems there will be more than one type of backing-store object -(specifically, in MS-DOS a backing store file might be an area of extended -memory as well as a disk file). jpeg_open_backing_store is responsible for -choosing how to implement a given object. The read/write/close routines -are method pointers in the structure that describes a given object; this -lets them be different for different object types. - -It may be necessary to ensure that backing store objects are explicitly -released upon abnormal program termination. For example, MS-DOS won't free -extended memory by itself. To support this, we will expect the main program -or surrounding application to arrange to call self_destruct (typically via -jpeg_destroy) upon abnormal termination. This may require a SIGINT signal -handler or equivalent. We don't want to have the back end module install its -own signal handler, because that would pre-empt the surrounding application's -ability to control signal handling. - -The IJG distribution includes several memory manager back end implementations. -Usually the same back end should be suitable for all applications on a given -system, but it is possible for an application to supply its own back end at -need. - - -*** Implications of DNL marker *** - -Some JPEG files may use a DNL marker to postpone definition of the image -height (this would be useful for a fax-like scanner's output, for instance). -In these files the SOF marker claims the image height is 0, and you only -find out the true image height at the end of the first scan. - -We could read these files as follows: -1. Upon seeing zero image height, replace it by 65535 (the maximum allowed). -2. When the DNL is found, update the image height in the global image - descriptor. -This implies that control modules must avoid making copies of the image -height, and must re-test for termination after each MCU row. This would -be easy enough to do. - -In cases where image-size data structures are allocated, this approach will -result in very inefficient use of virtual memory or much-larger-than-necessary -temporary files. This seems acceptable for something that probably won't be a -mainstream usage. People might have to forgo use of memory-hogging options -(such as two-pass color quantization or noninterleaved JPEG files) if they -want efficient conversion of such files. (One could improve efficiency by -demanding a user-supplied upper bound for the height, less than 65536; in most -cases it could be much less.) - -The standard also permits the SOF marker to overestimate the image height, -with a DNL to give the true, smaller height at the end of the first scan. -This would solve the space problems if the overestimate wasn't too great. -However, it implies that you don't even know whether DNL will be used. - -This leads to a couple of very serious objections: -1. Testing for a DNL marker must occur in the inner loop of the decompressor's - Huffman decoder; this implies a speed penalty whether the feature is used - or not. -2. There is no way to hide the last-minute change in image height from an - application using the decoder. Thus *every* application using the IJG - library would suffer a complexity penalty whether it cared about DNL or - not. -We currently do not support DNL because of these problems. - -A different approach is to insist that DNL-using files be preprocessed by a -separate program that reads ahead to the DNL, then goes back and fixes the SOF -marker. This is a much simpler solution and is probably far more efficient. -Even if one wants piped input, buffering the first scan of the JPEG file needs -a lot smaller temp file than is implied by the maximum-height method. 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zg|An}+9^s`#15B<^zGe#L_o?`^z&)&8y|JmGUPq}m2yqnx}#X=QI?9`ydrQ!#_ zEf?HzdbYd4lP>YCoSMtxm8bOGR-EsYR$9)Zvc^SK_=HEwe+H&N;bPrQI=5^7O_kZB zZT<4^slQgn{B1$Ke9D^-9bZwnB;niiGsSihKThp&Ir>QB?D5Tg3mBpj8m_p$lJ1ar zw~SMyP-N+>8AsU`hKeNw$aT9O+^Y6de8RIr(WubL@>>cs3fkV@4t8C-<$i~;pXUZq bQ*DE^kQ0s!%L8-O0|XYm;^_Kw{{Kw?X0q2( diff --git a/project/jni/jpeg/transupp.c b/project/jni/jpeg/transupp.c deleted file mode 100644 index e5ec5642f..000000000 --- a/project/jni/jpeg/transupp.c +++ /dev/null @@ -1,928 +0,0 @@ -/* - * transupp.c - * - * Copyright (C) 1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains image transformation routines and other utility code - * used by the jpegtran sample application. These are NOT part of the core - * JPEG library. But we keep these routines separate from jpegtran.c to - * ease the task of maintaining jpegtran-like programs that have other user - * interfaces. - */ - -/* Although this file really shouldn't have access to the library internals, - * it's helpful to let it call jround_up() and jcopy_block_row(). - */ -#define JPEG_INTERNALS - -#include "jinclude.h" -#include "jpeglib.h" -#include "transupp.h" /* My own external interface */ - - -#if TRANSFORMS_SUPPORTED - -/* - * Lossless image transformation routines. These routines work on DCT - * coefficient arrays and thus do not require any lossy decompression - * or recompression of the image. - * Thanks to Guido Vollbeding for the initial design and code of this feature. - * - * Horizontal flipping is done in-place, using a single top-to-bottom - * pass through the virtual source array. It will thus be much the - * fastest option for images larger than main memory. - * - * The other routines require a set of destination virtual arrays, so they - * need twice as much memory as jpegtran normally does. The destination - * arrays are always written in normal scan order (top to bottom) because - * the virtual array manager expects this. The source arrays will be scanned - * in the corresponding order, which means multiple passes through the source - * arrays for most of the transforms. That could result in much thrashing - * if the image is larger than main memory. - * - * Some notes about the operating environment of the individual transform - * routines: - * 1. Both the source and destination virtual arrays are allocated from the - * source JPEG object, and therefore should be manipulated by calling the - * source's memory manager. - * 2. The destination's component count should be used. It may be smaller - * than the source's when forcing to grayscale. - * 3. Likewise the destination's sampling factors should be used. When - * forcing to grayscale the destination's sampling factors will be all 1, - * and we may as well take that as the effective iMCU size. - * 4. When "trim" is in effect, the destination's dimensions will be the - * trimmed values but the source's will be untrimmed. - * 5. All the routines assume that the source and destination buffers are - * padded out to a full iMCU boundary. This is true, although for the - * source buffer it is an undocumented property of jdcoefct.c. - * Notes 2,3,4 boil down to this: generally we should use the destination's - * dimensions and ignore the source's. - */ - - -LOCAL(void) -do_flip_h (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays) -/* Horizontal flip; done in-place, so no separate dest array is required */ -{ - JDIMENSION MCU_cols, comp_width, blk_x, blk_y; - int ci, k, offset_y; - JBLOCKARRAY buffer; - JCOEFPTR ptr1, ptr2; - JCOEF temp1, temp2; - jpeg_component_info *compptr; - - /* Horizontal mirroring of DCT blocks is accomplished by swapping - * pairs of blocks in-place. Within a DCT block, we perform horizontal - * mirroring by changing the signs of odd-numbered columns. - * Partial iMCUs at the right edge are left untouched. - */ - MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE); - - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - comp_width = MCU_cols * compptr->h_samp_factor; - for (blk_y = 0; blk_y < compptr->height_in_blocks; - blk_y += compptr->v_samp_factor) { - buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - for (blk_x = 0; blk_x * 2 < comp_width; blk_x++) { - ptr1 = buffer[offset_y][blk_x]; - ptr2 = buffer[offset_y][comp_width - blk_x - 1]; - /* this unrolled loop doesn't need to know which row it's on... */ - for (k = 0; k < DCTSIZE2; k += 2) { - temp1 = *ptr1; /* swap even column */ - temp2 = *ptr2; - *ptr1++ = temp2; - *ptr2++ = temp1; - temp1 = *ptr1; /* swap odd column with sign change */ - temp2 = *ptr2; - *ptr1++ = -temp2; - *ptr2++ = -temp1; - } - } - } - } - } -} - - -LOCAL(void) -do_flip_v (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jvirt_barray_ptr *dst_coef_arrays) -/* Vertical flip */ -{ - JDIMENSION MCU_rows, comp_height, dst_blk_x, dst_blk_y; - int ci, i, j, offset_y; - JBLOCKARRAY src_buffer, dst_buffer; - JBLOCKROW src_row_ptr, dst_row_ptr; - JCOEFPTR src_ptr, dst_ptr; - jpeg_component_info *compptr; - - /* We output into a separate array because we can't touch different - * rows of the source virtual array simultaneously. Otherwise, this - * is a pretty straightforward analog of horizontal flip. - * Within a DCT block, vertical mirroring is done by changing the signs - * of odd-numbered rows. - * Partial iMCUs at the bottom edge are copied verbatim. - */ - MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE); - - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - comp_height = MCU_rows * compptr->v_samp_factor; - for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks; - dst_blk_y += compptr->v_samp_factor) { - dst_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - if (dst_blk_y < comp_height) { - /* Row is within the mirrorable area. */ - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], - comp_height - dst_blk_y - (JDIMENSION) compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, FALSE); - } else { - /* Bottom-edge blocks will be copied verbatim. */ - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, FALSE); - } - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - if (dst_blk_y < comp_height) { - /* Row is within the mirrorable area. */ - dst_row_ptr = dst_buffer[offset_y]; - src_row_ptr = src_buffer[compptr->v_samp_factor - offset_y - 1]; - for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; - dst_blk_x++) { - dst_ptr = dst_row_ptr[dst_blk_x]; - src_ptr = src_row_ptr[dst_blk_x]; - for (i = 0; i < DCTSIZE; i += 2) { - /* copy even row */ - for (j = 0; j < DCTSIZE; j++) - *dst_ptr++ = *src_ptr++; - /* copy odd row with sign change */ - for (j = 0; j < DCTSIZE; j++) - *dst_ptr++ = - *src_ptr++; - } - } - } else { - /* Just copy row verbatim. */ - jcopy_block_row(src_buffer[offset_y], dst_buffer[offset_y], - compptr->width_in_blocks); - } - } - } - } -} - - -LOCAL(void) -do_transpose (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jvirt_barray_ptr *dst_coef_arrays) -/* Transpose source into destination */ -{ - JDIMENSION dst_blk_x, dst_blk_y; - int ci, i, j, offset_x, offset_y; - JBLOCKARRAY src_buffer, dst_buffer; - JCOEFPTR src_ptr, dst_ptr; - jpeg_component_info *compptr; - - /* Transposing pixels within a block just requires transposing the - * DCT coefficients. - * Partial iMCUs at the edges require no special treatment; we simply - * process all the available DCT blocks for every component. - */ - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks; - dst_blk_y += compptr->v_samp_factor) { - dst_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; - dst_blk_x += compptr->h_samp_factor) { - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x, - (JDIMENSION) compptr->h_samp_factor, FALSE); - for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) { - src_ptr = src_buffer[offset_x][dst_blk_y + offset_y]; - dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x]; - for (i = 0; i < DCTSIZE; i++) - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - } - } - } - } - } -} - - -LOCAL(void) -do_rot_90 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jvirt_barray_ptr *dst_coef_arrays) -/* 90 degree rotation is equivalent to - * 1. Transposing the image; - * 2. Horizontal mirroring. - * These two steps are merged into a single processing routine. - */ -{ - JDIMENSION MCU_cols, comp_width, dst_blk_x, dst_blk_y; - int ci, i, j, offset_x, offset_y; - JBLOCKARRAY src_buffer, dst_buffer; - JCOEFPTR src_ptr, dst_ptr; - jpeg_component_info *compptr; - - /* Because of the horizontal mirror step, we can't process partial iMCUs - * at the (output) right edge properly. They just get transposed and - * not mirrored. - */ - MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE); - - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - comp_width = MCU_cols * compptr->h_samp_factor; - for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks; - dst_blk_y += compptr->v_samp_factor) { - dst_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; - dst_blk_x += compptr->h_samp_factor) { - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x, - (JDIMENSION) compptr->h_samp_factor, FALSE); - for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) { - src_ptr = src_buffer[offset_x][dst_blk_y + offset_y]; - if (dst_blk_x < comp_width) { - /* Block is within the mirrorable area. */ - dst_ptr = dst_buffer[offset_y] - [comp_width - dst_blk_x - offset_x - 1]; - for (i = 0; i < DCTSIZE; i++) { - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - i++; - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j]; - } - } else { - /* Edge blocks are transposed but not mirrored. */ - dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x]; - for (i = 0; i < DCTSIZE; i++) - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - } - } - } - } - } - } -} - - -LOCAL(void) -do_rot_270 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jvirt_barray_ptr *dst_coef_arrays) -/* 270 degree rotation is equivalent to - * 1. Horizontal mirroring; - * 2. Transposing the image. - * These two steps are merged into a single processing routine. - */ -{ - JDIMENSION MCU_rows, comp_height, dst_blk_x, dst_blk_y; - int ci, i, j, offset_x, offset_y; - JBLOCKARRAY src_buffer, dst_buffer; - JCOEFPTR src_ptr, dst_ptr; - jpeg_component_info *compptr; - - /* Because of the horizontal mirror step, we can't process partial iMCUs - * at the (output) bottom edge properly. They just get transposed and - * not mirrored. - */ - MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE); - - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - comp_height = MCU_rows * compptr->v_samp_factor; - for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks; - dst_blk_y += compptr->v_samp_factor) { - dst_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; - dst_blk_x += compptr->h_samp_factor) { - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x, - (JDIMENSION) compptr->h_samp_factor, FALSE); - for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) { - dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x]; - if (dst_blk_y < comp_height) { - /* Block is within the mirrorable area. */ - src_ptr = src_buffer[offset_x] - [comp_height - dst_blk_y - offset_y - 1]; - for (i = 0; i < DCTSIZE; i++) { - for (j = 0; j < DCTSIZE; j++) { - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - j++; - dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j]; - } - } - } else { - /* Edge blocks are transposed but not mirrored. */ - src_ptr = src_buffer[offset_x][dst_blk_y + offset_y]; - for (i = 0; i < DCTSIZE; i++) - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - } - } - } - } - } - } -} - - -LOCAL(void) -do_rot_180 (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jvirt_barray_ptr *dst_coef_arrays) -/* 180 degree rotation is equivalent to - * 1. Vertical mirroring; - * 2. Horizontal mirroring. - * These two steps are merged into a single processing routine. - */ -{ - JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height, dst_blk_x, dst_blk_y; - int ci, i, j, offset_y; - JBLOCKARRAY src_buffer, dst_buffer; - JBLOCKROW src_row_ptr, dst_row_ptr; - JCOEFPTR src_ptr, dst_ptr; - jpeg_component_info *compptr; - - MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE); - MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE); - - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - comp_width = MCU_cols * compptr->h_samp_factor; - comp_height = MCU_rows * compptr->v_samp_factor; - for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks; - dst_blk_y += compptr->v_samp_factor) { - dst_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - if (dst_blk_y < comp_height) { - /* Row is within the vertically mirrorable area. */ - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], - comp_height - dst_blk_y - (JDIMENSION) compptr->v_samp_factor, - (JDIMENSION) compptr->v_samp_factor, FALSE); - } else { - /* Bottom-edge rows are only mirrored horizontally. */ - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, FALSE); - } - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - if (dst_blk_y < comp_height) { - /* Row is within the mirrorable area. */ - dst_row_ptr = dst_buffer[offset_y]; - src_row_ptr = src_buffer[compptr->v_samp_factor - offset_y - 1]; - /* Process the blocks that can be mirrored both ways. */ - for (dst_blk_x = 0; dst_blk_x < comp_width; dst_blk_x++) { - dst_ptr = dst_row_ptr[dst_blk_x]; - src_ptr = src_row_ptr[comp_width - dst_blk_x - 1]; - for (i = 0; i < DCTSIZE; i += 2) { - /* For even row, negate every odd column. */ - for (j = 0; j < DCTSIZE; j += 2) { - *dst_ptr++ = *src_ptr++; - *dst_ptr++ = - *src_ptr++; - } - /* For odd row, negate every even column. */ - for (j = 0; j < DCTSIZE; j += 2) { - *dst_ptr++ = - *src_ptr++; - *dst_ptr++ = *src_ptr++; - } - } - } - /* Any remaining right-edge blocks are only mirrored vertically. */ - for (; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) { - dst_ptr = dst_row_ptr[dst_blk_x]; - src_ptr = src_row_ptr[dst_blk_x]; - for (i = 0; i < DCTSIZE; i += 2) { - for (j = 0; j < DCTSIZE; j++) - *dst_ptr++ = *src_ptr++; - for (j = 0; j < DCTSIZE; j++) - *dst_ptr++ = - *src_ptr++; - } - } - } else { - /* Remaining rows are just mirrored horizontally. */ - dst_row_ptr = dst_buffer[offset_y]; - src_row_ptr = src_buffer[offset_y]; - /* Process the blocks that can be mirrored. */ - for (dst_blk_x = 0; dst_blk_x < comp_width; dst_blk_x++) { - dst_ptr = dst_row_ptr[dst_blk_x]; - src_ptr = src_row_ptr[comp_width - dst_blk_x - 1]; - for (i = 0; i < DCTSIZE2; i += 2) { - *dst_ptr++ = *src_ptr++; - *dst_ptr++ = - *src_ptr++; - } - } - /* Any remaining right-edge blocks are only copied. */ - for (; dst_blk_x < compptr->width_in_blocks; dst_blk_x++) { - dst_ptr = dst_row_ptr[dst_blk_x]; - src_ptr = src_row_ptr[dst_blk_x]; - for (i = 0; i < DCTSIZE2; i++) - *dst_ptr++ = *src_ptr++; - } - } - } - } - } -} - - -LOCAL(void) -do_transverse (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jvirt_barray_ptr *dst_coef_arrays) -/* Transverse transpose is equivalent to - * 1. 180 degree rotation; - * 2. Transposition; - * or - * 1. Horizontal mirroring; - * 2. Transposition; - * 3. Horizontal mirroring. - * These steps are merged into a single processing routine. - */ -{ - JDIMENSION MCU_cols, MCU_rows, comp_width, comp_height, dst_blk_x, dst_blk_y; - int ci, i, j, offset_x, offset_y; - JBLOCKARRAY src_buffer, dst_buffer; - JCOEFPTR src_ptr, dst_ptr; - jpeg_component_info *compptr; - - MCU_cols = dstinfo->image_width / (dstinfo->max_h_samp_factor * DCTSIZE); - MCU_rows = dstinfo->image_height / (dstinfo->max_v_samp_factor * DCTSIZE); - - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - comp_width = MCU_cols * compptr->h_samp_factor; - comp_height = MCU_rows * compptr->v_samp_factor; - for (dst_blk_y = 0; dst_blk_y < compptr->height_in_blocks; - dst_blk_y += compptr->v_samp_factor) { - dst_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, dst_coef_arrays[ci], dst_blk_y, - (JDIMENSION) compptr->v_samp_factor, TRUE); - for (offset_y = 0; offset_y < compptr->v_samp_factor; offset_y++) { - for (dst_blk_x = 0; dst_blk_x < compptr->width_in_blocks; - dst_blk_x += compptr->h_samp_factor) { - src_buffer = (*srcinfo->mem->access_virt_barray) - ((j_common_ptr) srcinfo, src_coef_arrays[ci], dst_blk_x, - (JDIMENSION) compptr->h_samp_factor, FALSE); - for (offset_x = 0; offset_x < compptr->h_samp_factor; offset_x++) { - if (dst_blk_y < comp_height) { - src_ptr = src_buffer[offset_x] - [comp_height - dst_blk_y - offset_y - 1]; - if (dst_blk_x < comp_width) { - /* Block is within the mirrorable area. */ - dst_ptr = dst_buffer[offset_y] - [comp_width - dst_blk_x - offset_x - 1]; - for (i = 0; i < DCTSIZE; i++) { - for (j = 0; j < DCTSIZE; j++) { - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - j++; - dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j]; - } - i++; - for (j = 0; j < DCTSIZE; j++) { - dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j]; - j++; - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - } - } - } else { - /* Right-edge blocks are mirrored in y only */ - dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x]; - for (i = 0; i < DCTSIZE; i++) { - for (j = 0; j < DCTSIZE; j++) { - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - j++; - dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j]; - } - } - } - } else { - src_ptr = src_buffer[offset_x][dst_blk_y + offset_y]; - if (dst_blk_x < comp_width) { - /* Bottom-edge blocks are mirrored in x only */ - dst_ptr = dst_buffer[offset_y] - [comp_width - dst_blk_x - offset_x - 1]; - for (i = 0; i < DCTSIZE; i++) { - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - i++; - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = -src_ptr[i*DCTSIZE+j]; - } - } else { - /* At lower right corner, just transpose, no mirroring */ - dst_ptr = dst_buffer[offset_y][dst_blk_x + offset_x]; - for (i = 0; i < DCTSIZE; i++) - for (j = 0; j < DCTSIZE; j++) - dst_ptr[j*DCTSIZE+i] = src_ptr[i*DCTSIZE+j]; - } - } - } - } - } - } - } -} - - -/* Request any required workspace. - * - * We allocate the workspace virtual arrays from the source decompression - * object, so that all the arrays (both the original data and the workspace) - * will be taken into account while making memory management decisions. - * Hence, this routine must be called after jpeg_read_header (which reads - * the image dimensions) and before jpeg_read_coefficients (which realizes - * the source's virtual arrays). - */ - -GLOBAL(void) -jtransform_request_workspace (j_decompress_ptr srcinfo, - jpeg_transform_info *info) -{ - jvirt_barray_ptr *coef_arrays = NULL; - jpeg_component_info *compptr; - int ci; - - if (info->force_grayscale && - srcinfo->jpeg_color_space == JCS_YCbCr && - srcinfo->num_components == 3) { - /* We'll only process the first component */ - info->num_components = 1; - } else { - /* Process all the components */ - info->num_components = srcinfo->num_components; - } - - switch (info->transform) { - case JXFORM_NONE: - case JXFORM_FLIP_H: - /* Don't need a workspace array */ - break; - case JXFORM_FLIP_V: - case JXFORM_ROT_180: - /* Need workspace arrays having same dimensions as source image. - * Note that we allocate arrays padded out to the next iMCU boundary, - * so that transform routines need not worry about missing edge blocks. - */ - coef_arrays = (jvirt_barray_ptr *) - (*srcinfo->mem->alloc_small) ((j_common_ptr) srcinfo, JPOOL_IMAGE, - SIZEOF(jvirt_barray_ptr) * info->num_components); - for (ci = 0; ci < info->num_components; ci++) { - compptr = srcinfo->comp_info + ci; - coef_arrays[ci] = (*srcinfo->mem->request_virt_barray) - ((j_common_ptr) srcinfo, JPOOL_IMAGE, FALSE, - (JDIMENSION) jround_up((long) compptr->width_in_blocks, - (long) compptr->h_samp_factor), - (JDIMENSION) jround_up((long) compptr->height_in_blocks, - (long) compptr->v_samp_factor), - (JDIMENSION) compptr->v_samp_factor); - } - break; - case JXFORM_TRANSPOSE: - case JXFORM_TRANSVERSE: - case JXFORM_ROT_90: - case JXFORM_ROT_270: - /* Need workspace arrays having transposed dimensions. - * Note that we allocate arrays padded out to the next iMCU boundary, - * so that transform routines need not worry about missing edge blocks. - */ - coef_arrays = (jvirt_barray_ptr *) - (*srcinfo->mem->alloc_small) ((j_common_ptr) srcinfo, JPOOL_IMAGE, - SIZEOF(jvirt_barray_ptr) * info->num_components); - for (ci = 0; ci < info->num_components; ci++) { - compptr = srcinfo->comp_info + ci; - coef_arrays[ci] = (*srcinfo->mem->request_virt_barray) - ((j_common_ptr) srcinfo, JPOOL_IMAGE, FALSE, - (JDIMENSION) jround_up((long) compptr->height_in_blocks, - (long) compptr->v_samp_factor), - (JDIMENSION) jround_up((long) compptr->width_in_blocks, - (long) compptr->h_samp_factor), - (JDIMENSION) compptr->h_samp_factor); - } - break; - } - info->workspace_coef_arrays = coef_arrays; -} - - -/* Transpose destination image parameters */ - -LOCAL(void) -transpose_critical_parameters (j_compress_ptr dstinfo) -{ - int tblno, i, j, ci, itemp; - jpeg_component_info *compptr; - JQUANT_TBL *qtblptr; - JDIMENSION dtemp; - UINT16 qtemp; - - /* Transpose basic image dimensions */ - dtemp = dstinfo->image_width; - dstinfo->image_width = dstinfo->image_height; - dstinfo->image_height = dtemp; - - /* Transpose sampling factors */ - for (ci = 0; ci < dstinfo->num_components; ci++) { - compptr = dstinfo->comp_info + ci; - itemp = compptr->h_samp_factor; - compptr->h_samp_factor = compptr->v_samp_factor; - compptr->v_samp_factor = itemp; - } - - /* Transpose quantization tables */ - for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) { - qtblptr = dstinfo->quant_tbl_ptrs[tblno]; - if (qtblptr != NULL) { - for (i = 0; i < DCTSIZE; i++) { - for (j = 0; j < i; j++) { - qtemp = qtblptr->quantval[i*DCTSIZE+j]; - qtblptr->quantval[i*DCTSIZE+j] = qtblptr->quantval[j*DCTSIZE+i]; - qtblptr->quantval[j*DCTSIZE+i] = qtemp; - } - } - } - } -} - - -/* Trim off any partial iMCUs on the indicated destination edge */ - -LOCAL(void) -trim_right_edge (j_compress_ptr dstinfo) -{ - int ci, max_h_samp_factor; - JDIMENSION MCU_cols; - - /* We have to compute max_h_samp_factor ourselves, - * because it hasn't been set yet in the destination - * (and we don't want to use the source's value). - */ - max_h_samp_factor = 1; - for (ci = 0; ci < dstinfo->num_components; ci++) { - int h_samp_factor = dstinfo->comp_info[ci].h_samp_factor; - max_h_samp_factor = MAX(max_h_samp_factor, h_samp_factor); - } - MCU_cols = dstinfo->image_width / (max_h_samp_factor * DCTSIZE); - if (MCU_cols > 0) /* can't trim to 0 pixels */ - dstinfo->image_width = MCU_cols * (max_h_samp_factor * DCTSIZE); -} - -LOCAL(void) -trim_bottom_edge (j_compress_ptr dstinfo) -{ - int ci, max_v_samp_factor; - JDIMENSION MCU_rows; - - /* We have to compute max_v_samp_factor ourselves, - * because it hasn't been set yet in the destination - * (and we don't want to use the source's value). - */ - max_v_samp_factor = 1; - for (ci = 0; ci < dstinfo->num_components; ci++) { - int v_samp_factor = dstinfo->comp_info[ci].v_samp_factor; - max_v_samp_factor = MAX(max_v_samp_factor, v_samp_factor); - } - MCU_rows = dstinfo->image_height / (max_v_samp_factor * DCTSIZE); - if (MCU_rows > 0) /* can't trim to 0 pixels */ - dstinfo->image_height = MCU_rows * (max_v_samp_factor * DCTSIZE); -} - - -/* Adjust output image parameters as needed. - * - * This must be called after jpeg_copy_critical_parameters() - * and before jpeg_write_coefficients(). - * - * The return value is the set of virtual coefficient arrays to be written - * (either the ones allocated by jtransform_request_workspace, or the - * original source data arrays). The caller will need to pass this value - * to jpeg_write_coefficients(). - */ - -GLOBAL(jvirt_barray_ptr *) -jtransform_adjust_parameters (j_decompress_ptr srcinfo, - j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jpeg_transform_info *info) -{ - /* If force-to-grayscale is requested, adjust destination parameters */ - if (info->force_grayscale) { - /* We use jpeg_set_colorspace to make sure subsidiary settings get fixed - * properly. Among other things, the target h_samp_factor & v_samp_factor - * will get set to 1, which typically won't match the source. - * In fact we do this even if the source is already grayscale; that - * provides an easy way of coercing a grayscale JPEG with funny sampling - * factors to the customary 1,1. (Some decoders fail on other factors.) - */ - if ((dstinfo->jpeg_color_space == JCS_YCbCr && - dstinfo->num_components == 3) || - (dstinfo->jpeg_color_space == JCS_GRAYSCALE && - dstinfo->num_components == 1)) { - /* We have to preserve the source's quantization table number. */ - int sv_quant_tbl_no = dstinfo->comp_info[0].quant_tbl_no; - jpeg_set_colorspace(dstinfo, JCS_GRAYSCALE); - dstinfo->comp_info[0].quant_tbl_no = sv_quant_tbl_no; - } else { - /* Sorry, can't do it */ - ERREXIT(dstinfo, JERR_CONVERSION_NOTIMPL); - } - } - - /* Correct the destination's image dimensions etc if necessary */ - switch (info->transform) { - case JXFORM_NONE: - /* Nothing to do */ - break; - case JXFORM_FLIP_H: - if (info->trim) - trim_right_edge(dstinfo); - break; - case JXFORM_FLIP_V: - if (info->trim) - trim_bottom_edge(dstinfo); - break; - case JXFORM_TRANSPOSE: - transpose_critical_parameters(dstinfo); - /* transpose does NOT have to trim anything */ - break; - case JXFORM_TRANSVERSE: - transpose_critical_parameters(dstinfo); - if (info->trim) { - trim_right_edge(dstinfo); - trim_bottom_edge(dstinfo); - } - break; - case JXFORM_ROT_90: - transpose_critical_parameters(dstinfo); - if (info->trim) - trim_right_edge(dstinfo); - break; - case JXFORM_ROT_180: - if (info->trim) { - trim_right_edge(dstinfo); - trim_bottom_edge(dstinfo); - } - break; - case JXFORM_ROT_270: - transpose_critical_parameters(dstinfo); - if (info->trim) - trim_bottom_edge(dstinfo); - break; - } - - /* Return the appropriate output data set */ - if (info->workspace_coef_arrays != NULL) - return info->workspace_coef_arrays; - return src_coef_arrays; -} - - -/* Execute the actual transformation, if any. - * - * This must be called *after* jpeg_write_coefficients, because it depends - * on jpeg_write_coefficients to have computed subsidiary values such as - * the per-component width and height fields in the destination object. - * - * Note that some transformations will modify the source data arrays! - */ - -GLOBAL(void) -jtransform_execute_transformation (j_decompress_ptr srcinfo, - j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jpeg_transform_info *info) -{ - jvirt_barray_ptr *dst_coef_arrays = info->workspace_coef_arrays; - - switch (info->transform) { - case JXFORM_NONE: - break; - case JXFORM_FLIP_H: - do_flip_h(srcinfo, dstinfo, src_coef_arrays); - break; - case JXFORM_FLIP_V: - do_flip_v(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays); - break; - case JXFORM_TRANSPOSE: - do_transpose(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays); - break; - case JXFORM_TRANSVERSE: - do_transverse(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays); - break; - case JXFORM_ROT_90: - do_rot_90(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays); - break; - case JXFORM_ROT_180: - do_rot_180(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays); - break; - case JXFORM_ROT_270: - do_rot_270(srcinfo, dstinfo, src_coef_arrays, dst_coef_arrays); - break; - } -} - -#endif /* TRANSFORMS_SUPPORTED */ - - -/* Setup decompression object to save desired markers in memory. - * This must be called before jpeg_read_header() to have the desired effect. - */ - -GLOBAL(void) -jcopy_markers_setup (j_decompress_ptr srcinfo, JCOPY_OPTION option) -{ -#ifdef SAVE_MARKERS_SUPPORTED - int m; - - /* Save comments except under NONE option */ - if (option != JCOPYOPT_NONE) { - jpeg_save_markers(srcinfo, JPEG_COM, 0xFFFF); - } - /* Save all types of APPn markers iff ALL option */ - if (option == JCOPYOPT_ALL) { - for (m = 0; m < 16; m++) - jpeg_save_markers(srcinfo, JPEG_APP0 + m, 0xFFFF); - } -#endif /* SAVE_MARKERS_SUPPORTED */ -} - -/* Copy markers saved in the given source object to the destination object. - * This should be called just after jpeg_start_compress() or - * jpeg_write_coefficients(). - * Note that those routines will have written the SOI, and also the - * JFIF APP0 or Adobe APP14 markers if selected. - */ - -GLOBAL(void) -jcopy_markers_execute (j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - JCOPY_OPTION option) -{ - jpeg_saved_marker_ptr marker; - - /* In the current implementation, we don't actually need to examine the - * option flag here; we just copy everything that got saved. - * But to avoid confusion, we do not output JFIF and Adobe APP14 markers - * if the encoder library already wrote one. - */ - for (marker = srcinfo->marker_list; marker != NULL; marker = marker->next) { - if (dstinfo->write_JFIF_header && - marker->marker == JPEG_APP0 && - marker->data_length >= 5 && - GETJOCTET(marker->data[0]) == 0x4A && - GETJOCTET(marker->data[1]) == 0x46 && - GETJOCTET(marker->data[2]) == 0x49 && - GETJOCTET(marker->data[3]) == 0x46 && - GETJOCTET(marker->data[4]) == 0) - continue; /* reject duplicate JFIF */ - if (dstinfo->write_Adobe_marker && - marker->marker == JPEG_APP0+14 && - marker->data_length >= 5 && - GETJOCTET(marker->data[0]) == 0x41 && - GETJOCTET(marker->data[1]) == 0x64 && - GETJOCTET(marker->data[2]) == 0x6F && - GETJOCTET(marker->data[3]) == 0x62 && - GETJOCTET(marker->data[4]) == 0x65) - continue; /* reject duplicate Adobe */ -#ifdef NEED_FAR_POINTERS - /* We could use jpeg_write_marker if the data weren't FAR... */ - { - unsigned int i; - jpeg_write_m_header(dstinfo, marker->marker, marker->data_length); - for (i = 0; i < marker->data_length; i++) - jpeg_write_m_byte(dstinfo, marker->data[i]); - } -#else - jpeg_write_marker(dstinfo, marker->marker, - marker->data, marker->data_length); -#endif - } -} diff --git a/project/jni/jpeg/transupp.h b/project/jni/jpeg/transupp.h deleted file mode 100644 index 5c2d32aff..000000000 --- a/project/jni/jpeg/transupp.h +++ /dev/null @@ -1,135 +0,0 @@ -/* - * transupp.h - * - * Copyright (C) 1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains declarations for image transformation routines and - * other utility code used by the jpegtran sample application. These are - * NOT part of the core JPEG library. But we keep these routines separate - * from jpegtran.c to ease the task of maintaining jpegtran-like programs - * that have other user interfaces. - * - * NOTE: all the routines declared here have very specific requirements - * about when they are to be executed during the reading and writing of the - * source and destination files. See the comments in transupp.c, or see - * jpegtran.c for an example of correct usage. - */ - -/* If you happen not to want the image transform support, disable it here */ -#ifndef TRANSFORMS_SUPPORTED -#define TRANSFORMS_SUPPORTED 1 /* 0 disables transform code */ -#endif - -/* Short forms of external names for systems with brain-damaged linkers. */ - -#ifdef NEED_SHORT_EXTERNAL_NAMES -#define jtransform_request_workspace jTrRequest -#define jtransform_adjust_parameters jTrAdjust -#define jtransform_execute_transformation jTrExec -#define jcopy_markers_setup jCMrkSetup -#define jcopy_markers_execute jCMrkExec -#endif /* NEED_SHORT_EXTERNAL_NAMES */ - - -/* - * Codes for supported types of image transformations. - */ - -typedef enum { - JXFORM_NONE, /* no transformation */ - JXFORM_FLIP_H, /* horizontal flip */ - JXFORM_FLIP_V, /* vertical flip */ - JXFORM_TRANSPOSE, /* transpose across UL-to-LR axis */ - JXFORM_TRANSVERSE, /* transpose across UR-to-LL axis */ - JXFORM_ROT_90, /* 90-degree clockwise rotation */ - JXFORM_ROT_180, /* 180-degree rotation */ - JXFORM_ROT_270 /* 270-degree clockwise (or 90 ccw) */ -} JXFORM_CODE; - -/* - * Although rotating and flipping data expressed as DCT coefficients is not - * hard, there is an asymmetry in the JPEG format specification for images - * whose dimensions aren't multiples of the iMCU size. The right and bottom - * image edges are padded out to the next iMCU boundary with junk data; but - * no padding is possible at the top and left edges. If we were to flip - * the whole image including the pad data, then pad garbage would become - * visible at the top and/or left, and real pixels would disappear into the - * pad margins --- perhaps permanently, since encoders & decoders may not - * bother to preserve DCT blocks that appear to be completely outside the - * nominal image area. So, we have to exclude any partial iMCUs from the - * basic transformation. - * - * Transpose is the only transformation that can handle partial iMCUs at the - * right and bottom edges completely cleanly. flip_h can flip partial iMCUs - * at the bottom, but leaves any partial iMCUs at the right edge untouched. - * Similarly flip_v leaves any partial iMCUs at the bottom edge untouched. - * The other transforms are defined as combinations of these basic transforms - * and process edge blocks in a way that preserves the equivalence. - * - * The "trim" option causes untransformable partial iMCUs to be dropped; - * this is not strictly lossless, but it usually gives the best-looking - * result for odd-size images. Note that when this option is active, - * the expected mathematical equivalences between the transforms may not hold. - * (For example, -rot 270 -trim trims only the bottom edge, but -rot 90 -trim - * followed by -rot 180 -trim trims both edges.) - * - * We also offer a "force to grayscale" option, which simply discards the - * chrominance channels of a YCbCr image. This is lossless in the sense that - * the luminance channel is preserved exactly. It's not the same kind of - * thing as the rotate/flip transformations, but it's convenient to handle it - * as part of this package, mainly because the transformation routines have to - * be aware of the option to know how many components to work on. - */ - -typedef struct { - /* Options: set by caller */ - JXFORM_CODE transform; /* image transform operator */ - boolean trim; /* if TRUE, trim partial MCUs as needed */ - boolean force_grayscale; /* if TRUE, convert color image to grayscale */ - - /* Internal workspace: caller should not touch these */ - int num_components; /* # of components in workspace */ - jvirt_barray_ptr * workspace_coef_arrays; /* workspace for transformations */ -} jpeg_transform_info; - - -#if TRANSFORMS_SUPPORTED - -/* Request any required workspace */ -EXTERN(void) jtransform_request_workspace - JPP((j_decompress_ptr srcinfo, jpeg_transform_info *info)); -/* Adjust output image parameters */ -EXTERN(jvirt_barray_ptr *) jtransform_adjust_parameters - JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jpeg_transform_info *info)); -/* Execute the actual transformation, if any */ -EXTERN(void) jtransform_execute_transformation - JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - jvirt_barray_ptr *src_coef_arrays, - jpeg_transform_info *info)); - -#endif /* TRANSFORMS_SUPPORTED */ - - -/* - * Support for copying optional markers from source to destination file. - */ - -typedef enum { - JCOPYOPT_NONE, /* copy no optional markers */ - JCOPYOPT_COMMENTS, /* copy only comment (COM) markers */ - JCOPYOPT_ALL /* copy all optional markers */ -} JCOPY_OPTION; - -#define JCOPYOPT_DEFAULT JCOPYOPT_COMMENTS /* recommended default */ - -/* Setup decompression object to save desired markers in memory */ -EXTERN(void) jcopy_markers_setup - JPP((j_decompress_ptr srcinfo, JCOPY_OPTION option)); -/* Copy markers saved in the given source object to the destination object */ -EXTERN(void) jcopy_markers_execute - JPP((j_decompress_ptr srcinfo, j_compress_ptr dstinfo, - JCOPY_OPTION option)); diff --git a/project/jni/jpeg/usage.doc b/project/jni/jpeg/usage.doc deleted file mode 100644 index 8c4970af0..000000000 --- a/project/jni/jpeg/usage.doc +++ /dev/null @@ -1,562 +0,0 @@ -USAGE instructions for the Independent JPEG Group's JPEG software -================================================================= - -This file describes usage of the JPEG conversion programs cjpeg and djpeg, -as well as the utility programs jpegtran, rdjpgcom and wrjpgcom. (See -the other documentation files if you wish to use the JPEG library within -your own programs.) - -If you are on a Unix machine you may prefer to read the Unix-style manual -pages in files cjpeg.1, djpeg.1, jpegtran.1, rdjpgcom.1, wrjpgcom.1. - - -INTRODUCTION - -These programs implement JPEG image compression and decompression. JPEG -(pronounced "jay-peg") is a standardized compression method for full-color -and gray-scale images. JPEG is designed to handle "real-world" scenes, -for example scanned photographs. Cartoons, line drawings, and other -non-realistic images are not JPEG's strong suit; on that sort of material -you may get poor image quality and/or little compression. - -JPEG is lossy, meaning that the output image is not necessarily identical to -the input image. Hence you should not use JPEG if you have to have identical -output bits. However, on typical real-world images, very good compression -levels can be obtained with no visible change, and amazingly high compression -is possible if you can tolerate a low-quality image. You can trade off image -quality against file size by adjusting the compressor's "quality" setting. - - -GENERAL USAGE - -We provide two programs, cjpeg to compress an image file into JPEG format, -and djpeg to decompress a JPEG file back into a conventional image format. - -On Unix-like systems, you say: - cjpeg [switches] [imagefile] >jpegfile -or - djpeg [switches] [jpegfile] >imagefile -The programs read the specified input file, or standard input if none is -named. They always write to standard output (with trace/error messages to -standard error). These conventions are handy for piping images between -programs. - -On most non-Unix systems, you say: - cjpeg [switches] imagefile jpegfile -or - djpeg [switches] jpegfile imagefile -i.e., both the input and output files are named on the command line. This -style is a little more foolproof, and it loses no functionality if you don't -have pipes. (You can get this style on Unix too, if you prefer, by defining -TWO_FILE_COMMANDLINE when you compile the programs; see install.doc.) - -You can also say: - cjpeg [switches] -outfile jpegfile imagefile -or - djpeg [switches] -outfile imagefile jpegfile -This syntax works on all systems, so it is useful for scripts. - -The currently supported image file formats are: PPM (PBMPLUS color format), -PGM (PBMPLUS gray-scale format), BMP, Targa, and RLE (Utah Raster Toolkit -format). (RLE is supported only if the URT library is available.) -cjpeg recognizes the input image format automatically, with the exception -of some Targa-format files. You have to tell djpeg which format to generate. - -JPEG files are in the defacto standard JFIF file format. There are other, -less widely used JPEG-based file formats, but we don't support them. - -All switch names may be abbreviated; for example, -grayscale may be written --gray or -gr. Most of the "basic" switches can be abbreviated to as little as -one letter. Upper and lower case are equivalent (-BMP is the same as -bmp). -British spellings are also accepted (e.g., -greyscale), though for brevity -these are not mentioned below. - - -CJPEG DETAILS - -The basic command line switches for cjpeg are: - - -quality N Scale quantization tables to adjust image quality. - Quality is 0 (worst) to 100 (best); default is 75. - (See below for more info.) - - -grayscale Create monochrome JPEG file from color input. - Be sure to use this switch when compressing a grayscale - BMP file, because cjpeg isn't bright enough to notice - whether a BMP file uses only shades of gray. By - saying -grayscale, you'll get a smaller JPEG file that - takes less time to process. - - -optimize Perform optimization of entropy encoding parameters. - Without this, default encoding parameters are used. - -optimize usually makes the JPEG file a little smaller, - but cjpeg runs somewhat slower and needs much more - memory. Image quality and speed of decompression are - unaffected by -optimize. - - -progressive Create progressive JPEG file (see below). - - -targa Input file is Targa format. Targa files that contain - an "identification" field will not be automatically - recognized by cjpeg; for such files you must specify - -targa to make cjpeg treat the input as Targa format. - For most Targa files, you won't need this switch. - -The -quality switch lets you trade off compressed file size against quality of -the reconstructed image: the higher the quality setting, the larger the JPEG -file, and the closer the output image will be to the original input. Normally -you want to use the lowest quality setting (smallest file) that decompresses -into something visually indistinguishable from the original image. For this -purpose the quality setting should be between 50 and 95; the default of 75 is -often about right. If you see defects at -quality 75, then go up 5 or 10 -counts at a time until you are happy with the output image. (The optimal -setting will vary from one image to another.) - --quality 100 will generate a quantization table of all 1's, minimizing loss -in the quantization step (but there is still information loss in subsampling, -as well as roundoff error). This setting is mainly of interest for -experimental purposes. Quality values above about 95 are NOT recommended for -normal use; the compressed file size goes up dramatically for hardly any gain -in output image quality. - -In the other direction, quality values below 50 will produce very small files -of low image quality. Settings around 5 to 10 might be useful in preparing an -index of a large image library, for example. Try -quality 2 (or so) for some -amusing Cubist effects. (Note: quality values below about 25 generate 2-byte -quantization tables, which are considered optional in the JPEG standard. -cjpeg emits a warning message when you give such a quality value, because some -other JPEG programs may be unable to decode the resulting file. Use -baseline -if you need to ensure compatibility at low quality values.) - -The -progressive switch creates a "progressive JPEG" file. In this type of -JPEG file, the data is stored in multiple scans of increasing quality. If the -file is being transmitted over a slow communications link, the decoder can use -the first scan to display a low-quality image very quickly, and can then -improve the display with each subsequent scan. The final image is exactly -equivalent to a standard JPEG file of the same quality setting, and the total -file size is about the same --- often a little smaller. CAUTION: progressive -JPEG is not yet widely implemented, so many decoders will be unable to view a -progressive JPEG file at all. - -Switches for advanced users: - - -dct int Use integer DCT method (default). - -dct fast Use fast integer DCT (less accurate). - -dct float Use floating-point DCT method. - The float method is very slightly more accurate than - the int method, but is much slower unless your machine - has very fast floating-point hardware. Also note that - results of the floating-point method may vary slightly - across machines, while the integer methods should give - the same results everywhere. The fast integer method - is much less accurate than the other two. - - -restart N Emit a JPEG restart marker every N MCU rows, or every - N MCU blocks if "B" is attached to the number. - -restart 0 (the default) means no restart markers. - - -smooth N Smooth the input image to eliminate dithering noise. - N, ranging from 1 to 100, indicates the strength of - smoothing. 0 (the default) means no smoothing. - - -maxmemory N Set limit for amount of memory to use in processing - large images. Value is in thousands of bytes, or - millions of bytes if "M" is attached to the number. - For example, -max 4m selects 4000000 bytes. If more - space is needed, temporary files will be used. - - -verbose Enable debug printout. More -v's give more printout. - or -debug Also, version information is printed at startup. - -The -restart option inserts extra markers that allow a JPEG decoder to -resynchronize after a transmission error. Without restart markers, any damage -to a compressed file will usually ruin the image from the point of the error -to the end of the image; with restart markers, the damage is usually confined -to the portion of the image up to the next restart marker. Of course, the -restart markers occupy extra space. We recommend -restart 1 for images that -will be transmitted across unreliable networks such as Usenet. - -The -smooth option filters the input to eliminate fine-scale noise. This is -often useful when converting dithered images to JPEG: a moderate smoothing -factor of 10 to 50 gets rid of dithering patterns in the input file, resulting -in a smaller JPEG file and a better-looking image. Too large a smoothing -factor will visibly blur the image, however. - -Switches for wizards: - - -baseline Force baseline-compatible quantization tables to be - generated. This clamps quantization values to 8 bits - even at low quality settings. (This switch is poorly - named, since it does not ensure that the output is - actually baseline JPEG. For example, you can use - -baseline and -progressive together.) - - -qtables file Use the quantization tables given in the specified - text file. - - -qslots N[,...] Select which quantization table to use for each color - component. - - -sample HxV[,...] Set JPEG sampling factors for each color component. - - -scans file Use the scan script given in the specified text file. - -The "wizard" switches are intended for experimentation with JPEG. If you -don't know what you are doing, DON'T USE THEM. These switches are documented -further in the file wizard.doc. - - -DJPEG DETAILS - -The basic command line switches for djpeg are: - - -colors N Reduce image to at most N colors. This reduces the - or -quantize N number of colors used in the output image, so that it - can be displayed on a colormapped display or stored in - a colormapped file format. For example, if you have - an 8-bit display, you'd need to reduce to 256 or fewer - colors. (-colors is the recommended name, -quantize - is provided only for backwards compatibility.) - - -fast Select recommended processing options for fast, low - quality output. (The default options are chosen for - highest quality output.) Currently, this is equivalent - to "-dct fast -nosmooth -onepass -dither ordered". - - -grayscale Force gray-scale output even if JPEG file is color. - Useful for viewing on monochrome displays; also, - djpeg runs noticeably faster in this mode. - - -scale M/N Scale the output image by a factor M/N. Currently - the scale factor must be 1/1, 1/2, 1/4, or 1/8. - Scaling is handy if the image is larger than your - screen; also, djpeg runs much faster when scaling - down the output. - - -bmp Select BMP output format (Windows flavor). 8-bit - colormapped format is emitted if -colors or -grayscale - is specified, or if the JPEG file is gray-scale; - otherwise, 24-bit full-color format is emitted. - - -gif Select GIF output format. Since GIF does not support - more than 256 colors, -colors 256 is assumed (unless - you specify a smaller number of colors). If you - specify -fast, the default number of colors is 216. - - -os2 Select BMP output format (OS/2 1.x flavor). 8-bit - colormapped format is emitted if -colors or -grayscale - is specified, or if the JPEG file is gray-scale; - otherwise, 24-bit full-color format is emitted. - - -pnm Select PBMPLUS (PPM/PGM) output format (this is the - default format). PGM is emitted if the JPEG file is - gray-scale or if -grayscale is specified; otherwise - PPM is emitted. - - -rle Select RLE output format. (Requires URT library.) - - -targa Select Targa output format. Gray-scale format is - emitted if the JPEG file is gray-scale or if - -grayscale is specified; otherwise, colormapped format - is emitted if -colors is specified; otherwise, 24-bit - full-color format is emitted. - -Switches for advanced users: - - -dct int Use integer DCT method (default). - -dct fast Use fast integer DCT (less accurate). - -dct float Use floating-point DCT method. - The float method is very slightly more accurate than - the int method, but is much slower unless your machine - has very fast floating-point hardware. Also note that - results of the floating-point method may vary slightly - across machines, while the integer methods should give - the same results everywhere. The fast integer method - is much less accurate than the other two. - - -dither fs Use Floyd-Steinberg dithering in color quantization. - -dither ordered Use ordered dithering in color quantization. - -dither none Do not use dithering in color quantization. - By default, Floyd-Steinberg dithering is applied when - quantizing colors; this is slow but usually produces - the best results. Ordered dither is a compromise - between speed and quality; no dithering is fast but - usually looks awful. Note that these switches have - no effect unless color quantization is being done. - Ordered dither is only available in -onepass mode. - - -map FILE Quantize to the colors used in the specified image - file. This is useful for producing multiple files - with identical color maps, or for forcing a predefined - set of colors to be used. The FILE must be a GIF - or PPM file. This option overrides -colors and - -onepass. - - -nosmooth Use a faster, lower-quality upsampling routine. - - -onepass Use one-pass instead of two-pass color quantization. - The one-pass method is faster and needs less memory, - but it produces a lower-quality image. -onepass is - ignored unless you also say -colors N. Also, - the one-pass method is always used for gray-scale - output (the two-pass method is no improvement then). - - -maxmemory N Set limit for amount of memory to use in processing - large images. Value is in thousands of bytes, or - millions of bytes if "M" is attached to the number. - For example, -max 4m selects 4000000 bytes. If more - space is needed, temporary files will be used. - - -verbose Enable debug printout. More -v's give more printout. - or -debug Also, version information is printed at startup. - - -HINTS FOR CJPEG - -Color GIF files are not the ideal input for JPEG; JPEG is really intended for -compressing full-color (24-bit) images. In particular, don't try to convert -cartoons, line drawings, and other images that have only a few distinct -colors. GIF works great on these, JPEG does not. If you want to convert a -GIF to JPEG, you should experiment with cjpeg's -quality and -smooth options -to get a satisfactory conversion. -smooth 10 or so is often helpful. - -Avoid running an image through a series of JPEG compression/decompression -cycles. Image quality loss will accumulate; after ten or so cycles the image -may be noticeably worse than it was after one cycle. It's best to use a -lossless format while manipulating an image, then convert to JPEG format when -you are ready to file the image away. - -The -optimize option to cjpeg is worth using when you are making a "final" -version for posting or archiving. It's also a win when you are using low -quality settings to make very small JPEG files; the percentage improvement -is often a lot more than it is on larger files. (At present, -optimize -mode is always selected when generating progressive JPEG files.) - -GIF input files are no longer supported, to avoid the Unisys LZW patent. -Use a Unisys-licensed program if you need to read a GIF file. (Conversion -of GIF files to JPEG is usually a bad idea anyway.) - - -HINTS FOR DJPEG - -To get a quick preview of an image, use the -grayscale and/or -scale switches. -"-grayscale -scale 1/8" is the fastest case. - -Several options are available that trade off image quality to gain speed. -"-fast" turns on the recommended settings. - -"-dct fast" and/or "-nosmooth" gain speed at a small sacrifice in quality. -When producing a color-quantized image, "-onepass -dither ordered" is fast but -much lower quality than the default behavior. "-dither none" may give -acceptable results in two-pass mode, but is seldom tolerable in one-pass mode. - -If you are fortunate enough to have very fast floating point hardware, -"-dct float" may be even faster than "-dct fast". But on most machines -"-dct float" is slower than "-dct int"; in this case it is not worth using, -because its theoretical accuracy advantage is too small to be significant -in practice. - -Two-pass color quantization requires a good deal of memory; on MS-DOS machines -it may run out of memory even with -maxmemory 0. In that case you can still -decompress, with some loss of image quality, by specifying -onepass for -one-pass quantization. - -To avoid the Unisys LZW patent, djpeg produces uncompressed GIF files. These -are larger than they should be, but are readable by standard GIF decoders. - - -HINTS FOR BOTH PROGRAMS - -If more space is needed than will fit in the available main memory (as -determined by -maxmemory), temporary files will be used. (MS-DOS versions -will try to get extended or expanded memory first.) The temporary files are -often rather large: in typical cases they occupy three bytes per pixel, for -example 3*800*600 = 1.44Mb for an 800x600 image. If you don't have enough -free disk space, leave out -progressive and -optimize (for cjpeg) or specify --onepass (for djpeg). - -On MS-DOS, the temporary files are created in the directory named by the TMP -or TEMP environment variable, or in the current directory if neither of those -exist. Amiga implementations put the temp files in the directory named by -JPEGTMP:, so be sure to assign JPEGTMP: to a disk partition with adequate free -space. - -The default memory usage limit (-maxmemory) is set when the software is -compiled. If you get an "insufficient memory" error, try specifying a smaller --maxmemory value, even -maxmemory 0 to use the absolute minimum space. You -may want to recompile with a smaller default value if this happens often. - -On machines that have "environment" variables, you can define the environment -variable JPEGMEM to set the default memory limit. The value is specified as -described for the -maxmemory switch. JPEGMEM overrides the default value -specified when the program was compiled, and itself is overridden by an -explicit -maxmemory switch. - -On MS-DOS machines, -maxmemory is the amount of main (conventional) memory to -use. (Extended or expanded memory is also used if available.) Most -DOS-specific versions of this software do their own memory space estimation -and do not need you to specify -maxmemory. - - -JPEGTRAN - -jpegtran performs various useful transformations of JPEG files. -It can translate the coded representation from one variant of JPEG to another, -for example from baseline JPEG to progressive JPEG or vice versa. It can also -perform some rearrangements of the image data, for example turning an image -from landscape to portrait format by rotation. - -jpegtran works by rearranging the compressed data (DCT coefficients), without -ever fully decoding the image. Therefore, its transformations are lossless: -there is no image degradation at all, which would not be true if you used -djpeg followed by cjpeg to accomplish the same conversion. But by the same -token, jpegtran cannot perform lossy operations such as changing the image -quality. - -jpegtran uses a command line syntax similar to cjpeg or djpeg. -On Unix-like systems, you say: - jpegtran [switches] [inputfile] >outputfile -On most non-Unix systems, you say: - jpegtran [switches] inputfile outputfile -where both the input and output files are JPEG files. - -To specify the coded JPEG representation used in the output file, -jpegtran accepts a subset of the switches recognized by cjpeg: - -optimize Perform optimization of entropy encoding parameters. - -progressive Create progressive JPEG file. - -restart N Emit a JPEG restart marker every N MCU rows, or every - N MCU blocks if "B" is attached to the number. - -scans file Use the scan script given in the specified text file. -See the previous discussion of cjpeg for more details about these switches. -If you specify none of these switches, you get a plain baseline-JPEG output -file. The quality setting and so forth are determined by the input file. - -The image can be losslessly transformed by giving one of these switches: - -flip horizontal Mirror image horizontally (left-right). - -flip vertical Mirror image vertically (top-bottom). - -rotate 90 Rotate image 90 degrees clockwise. - -rotate 180 Rotate image 180 degrees. - -rotate 270 Rotate image 270 degrees clockwise (or 90 ccw). - -transpose Transpose image (across UL-to-LR axis). - -transverse Transverse transpose (across UR-to-LL axis). - -The transpose transformation has no restrictions regarding image dimensions. -The other transformations operate rather oddly if the image dimensions are not -a multiple of the iMCU size (usually 8 or 16 pixels), because they can only -transform complete blocks of DCT coefficient data in the desired way. - -jpegtran's default behavior when transforming an odd-size image is designed -to preserve exact reversibility and mathematical consistency of the -transformation set. As stated, transpose is able to flip the entire image -area. Horizontal mirroring leaves any partial iMCU column at the right edge -untouched, but is able to flip all rows of the image. Similarly, vertical -mirroring leaves any partial iMCU row at the bottom edge untouched, but is -able to flip all columns. The other transforms can be built up as sequences -of transpose and flip operations; for consistency, their actions on edge -pixels are defined to be the same as the end result of the corresponding -transpose-and-flip sequence. - -For practical use, you may prefer to discard any untransformable edge pixels -rather than having a strange-looking strip along the right and/or bottom edges -of a transformed image. To do this, add the -trim switch: - -trim Drop non-transformable edge blocks. -Obviously, a transformation with -trim is not reversible, so strictly speaking -jpegtran with this switch is not lossless. Also, the expected mathematical -equivalences between the transformations no longer hold. For example, -"-rot 270 -trim" trims only the bottom edge, but "-rot 90 -trim" followed by -"-rot 180 -trim" trims both edges. - -Another not-strictly-lossless transformation switch is: - -grayscale Force grayscale output. -This option discards the chrominance channels if the input image is YCbCr -(ie, a standard color JPEG), resulting in a grayscale JPEG file. The -luminance channel is preserved exactly, so this is a better method of reducing -to grayscale than decompression, conversion, and recompression. This switch -is particularly handy for fixing a monochrome picture that was mistakenly -encoded as a color JPEG. (In such a case, the space savings from getting rid -of the near-empty chroma channels won't be large; but the decoding time for -a grayscale JPEG is substantially less than that for a color JPEG.) - -jpegtran also recognizes these switches that control what to do with "extra" -markers, such as comment blocks: - -copy none Copy no extra markers from source file. This setting - suppresses all comments and other excess baggage - present in the source file. - -copy comments Copy only comment markers. This setting copies - comments from the source file, but discards - any other inessential data. - -copy all Copy all extra markers. This setting preserves - miscellaneous markers found in the source file, such - as JFIF thumbnails and Photoshop settings. In some - files these extra markers can be sizable. -The default behavior is -copy comments. (Note: in IJG releases v6 and v6a, -jpegtran always did the equivalent of -copy none.) - -Additional switches recognized by jpegtran are: - -outfile filename - -maxmemory N - -verbose - -debug -These work the same as in cjpeg or djpeg. - - -THE COMMENT UTILITIES - -The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. -Although the standard doesn't actually define what COM blocks are for, they -are widely used to hold user-supplied text strings. This lets you add -annotations, titles, index terms, etc to your JPEG files, and later retrieve -them as text. COM blocks do not interfere with the image stored in the JPEG -file. The maximum size of a COM block is 64K, but you can have as many of -them as you like in one JPEG file. - -We provide two utility programs to display COM block contents and add COM -blocks to a JPEG file. - -rdjpgcom searches a JPEG file and prints the contents of any COM blocks on -standard output. The command line syntax is - rdjpgcom [-verbose] [inputfilename] -The switch "-verbose" (or just "-v") causes rdjpgcom to also display the JPEG -image dimensions. If you omit the input file name from the command line, -the JPEG file is read from standard input. (This may not work on some -operating systems, if binary data can't be read from stdin.) - -wrjpgcom adds a COM block, containing text you provide, to a JPEG file. -Ordinarily, the COM block is added after any existing COM blocks, but you -can delete the old COM blocks if you wish. wrjpgcom produces a new JPEG -file; it does not modify the input file. DO NOT try to overwrite the input -file by directing wrjpgcom's output back into it; on most systems this will -just destroy your file. - -The command line syntax for wrjpgcom is similar to cjpeg's. On Unix-like -systems, it is - wrjpgcom [switches] [inputfilename] -The output file is written to standard output. The input file comes from -the named file, or from standard input if no input file is named. - -On most non-Unix systems, the syntax is - wrjpgcom [switches] inputfilename outputfilename -where both input and output file names must be given explicitly. - -wrjpgcom understands three switches: - -replace Delete any existing COM blocks from the file. - -comment "Comment text" Supply new COM text on command line. - -cfile name Read text for new COM block from named file. -(Switch names can be abbreviated.) If you have only one line of comment text -to add, you can provide it on the command line with -comment. The comment -text must be surrounded with quotes so that it is treated as a single -argument. Longer comments can be read from a text file. - -If you give neither -comment nor -cfile, then wrjpgcom will read the comment -text from standard input. (In this case an input image file name MUST be -supplied, so that the source JPEG file comes from somewhere else.) You can -enter multiple lines, up to 64KB worth. Type an end-of-file indicator -(usually control-D or control-Z) to terminate the comment text entry. - -wrjpgcom will not add a COM block if the provided comment string is empty. -Therefore -replace -comment "" can be used to delete all COM blocks from a -file. - -These utility programs do not depend on the IJG JPEG library. In -particular, the source code for rdjpgcom is intended as an illustration of -the minimum amount of code required to parse a JPEG file header correctly. diff --git a/project/jni/jpeg/wizard.doc b/project/jni/jpeg/wizard.doc deleted file mode 100644 index 54170b227..000000000 --- a/project/jni/jpeg/wizard.doc +++ /dev/null @@ -1,211 +0,0 @@ -Advanced usage instructions for the Independent JPEG Group's JPEG software -========================================================================== - -This file describes cjpeg's "switches for wizards". - -The "wizard" switches are intended for experimentation with JPEG by persons -who are reasonably knowledgeable about the JPEG standard. If you don't know -what you are doing, DON'T USE THESE SWITCHES. You'll likely produce files -with worse image quality and/or poorer compression than you'd get from the -default settings. Furthermore, these switches must be used with caution -when making files intended for general use, because not all JPEG decoders -will support unusual JPEG parameter settings. - - -Quantization Table Adjustment ------------------------------ - -Ordinarily, cjpeg starts with a default set of tables (the same ones given -as examples in the JPEG standard) and scales them up or down according to -the -quality setting. The details of the scaling algorithm can be found in -jcparam.c. At very low quality settings, some quantization table entries -can get scaled up to values exceeding 255. Although 2-byte quantization -values are supported by the IJG software, this feature is not in baseline -JPEG and is not supported by all implementations. If you need to ensure -wide compatibility of low-quality files, you can constrain the scaled -quantization values to no more than 255 by giving the -baseline switch. -Note that use of -baseline will result in poorer quality for the same file -size, since more bits than necessary are expended on higher AC coefficients. - -You can substitute a different set of quantization values by using the --qtables switch: - - -qtables file Use the quantization tables given in the named file. - -The specified file should be a text file containing decimal quantization -values. The file should contain one to four tables, each of 64 elements. -The tables are implicitly numbered 0,1,etc. in order of appearance. Table -entries appear in normal array order (NOT in the zigzag order in which they -will be stored in the JPEG file). - -Quantization table files are free format, in that arbitrary whitespace can -appear between numbers. Also, comments can be included: a comment starts -with '#' and extends to the end of the line. Here is an example file that -duplicates the default quantization tables: - - # Quantization tables given in JPEG spec, section K.1 - - # This is table 0 (the luminance table): - 16 11 10 16 24 40 51 61 - 12 12 14 19 26 58 60 55 - 14 13 16 24 40 57 69 56 - 14 17 22 29 51 87 80 62 - 18 22 37 56 68 109 103 77 - 24 35 55 64 81 104 113 92 - 49 64 78 87 103 121 120 101 - 72 92 95 98 112 100 103 99 - - # This is table 1 (the chrominance table): - 17 18 24 47 99 99 99 99 - 18 21 26 66 99 99 99 99 - 24 26 56 99 99 99 99 99 - 47 66 99 99 99 99 99 99 - 99 99 99 99 99 99 99 99 - 99 99 99 99 99 99 99 99 - 99 99 99 99 99 99 99 99 - 99 99 99 99 99 99 99 99 - -If the -qtables switch is used without -quality, then the specified tables -are used exactly as-is. If both -qtables and -quality are used, then the -tables taken from the file are scaled in the same fashion that the default -tables would be scaled for that quality setting. If -baseline appears, then -the quantization values are constrained to the range 1-255. - -By default, cjpeg will use quantization table 0 for luminance components and -table 1 for chrominance components. To override this choice, use the -qslots -switch: - - -qslots N[,...] Select which quantization table to use for - each color component. - -The -qslots switch specifies a quantization table number for each color -component, in the order in which the components appear in the JPEG SOF marker. -For example, to create a separate table for each of Y,Cb,Cr, you could -provide a -qtables file that defines three quantization tables and say -"-qslots 0,1,2". If -qslots gives fewer table numbers than there are color -components, then the last table number is repeated as necessary. - - -Sampling Factor Adjustment --------------------------- - -By default, cjpeg uses 2:1 horizontal and vertical downsampling when -compressing YCbCr data, and no downsampling for all other color spaces. -You can override this default with the -sample switch: - - -sample HxV[,...] Set JPEG sampling factors for each color - component. - -The -sample switch specifies the JPEG sampling factors for each color -component, in the order in which they appear in the JPEG SOF marker. -If you specify fewer HxV pairs than there are components, the remaining -components are set to 1x1 sampling. For example, the default YCbCr setting -is equivalent to "-sample 2x2,1x1,1x1", which can be abbreviated to -"-sample 2x2". - -There are still some JPEG decoders in existence that support only 2x1 -sampling (also called 4:2:2 sampling). Compatibility with such decoders can -be achieved by specifying "-sample 2x1". This is not recommended unless -really necessary, since it increases file size and encoding/decoding time -with very little quality gain. - - -Multiple Scan / Progression Control ------------------------------------ - -By default, cjpeg emits a single-scan sequential JPEG file. The --progressive switch generates a progressive JPEG file using a default series -of progression parameters. You can create multiple-scan sequential JPEG -files or progressive JPEG files with custom progression parameters by using -the -scans switch: - - -scans file Use the scan sequence given in the named file. - -The specified file should be a text file containing a "scan script". -The script specifies the contents and ordering of the scans to be emitted. -Each entry in the script defines one scan. A scan definition specifies -the components to be included in the scan, and for progressive JPEG it also -specifies the progression parameters Ss,Se,Ah,Al for the scan. Scan -definitions are separated by semicolons (';'). A semicolon after the last -scan definition is optional. - -Each scan definition contains one to four component indexes, optionally -followed by a colon (':') and the four progressive-JPEG parameters. The -component indexes denote which color component(s) are to be transmitted in -the scan. Components are numbered in the order in which they appear in the -JPEG SOF marker, with the first component being numbered 0. (Note that these -indexes are not the "component ID" codes assigned to the components, just -positional indexes.) - -The progression parameters for each scan are: - Ss Zigzag index of first coefficient included in scan - Se Zigzag index of last coefficient included in scan - Ah Zero for first scan of a coefficient, else Al of prior scan - Al Successive approximation low bit position for scan -If the progression parameters are omitted, the values 0,63,0,0 are used, -producing a sequential JPEG file. cjpeg automatically determines whether -the script represents a progressive or sequential file, by observing whether -Ss and Se values other than 0 and 63 appear. (The -progressive switch is -not needed to specify this; in fact, it is ignored when -scans appears.) -The scan script must meet the JPEG restrictions on progression sequences. -(cjpeg checks that the spec's requirements are obeyed.) - -Scan script files are free format, in that arbitrary whitespace can appear -between numbers and around punctuation. Also, comments can be included: a -comment starts with '#' and extends to the end of the line. For additional -legibility, commas or dashes can be placed between values. (Actually, any -single punctuation character other than ':' or ';' can be inserted.) For -example, the following two scan definitions are equivalent: - 0 1 2: 0 63 0 0; - 0,1,2 : 0-63, 0,0 ; - -Here is an example of a scan script that generates a partially interleaved -sequential JPEG file: - - 0; # Y only in first scan - 1 2; # Cb and Cr in second scan - -Here is an example of a progressive scan script using only spectral selection -(no successive approximation): - - # Interleaved DC scan for Y,Cb,Cr: - 0,1,2: 0-0, 0, 0 ; - # AC scans: - 0: 1-2, 0, 0 ; # First two Y AC coefficients - 0: 3-5, 0, 0 ; # Three more - 1: 1-63, 0, 0 ; # All AC coefficients for Cb - 2: 1-63, 0, 0 ; # All AC coefficients for Cr - 0: 6-9, 0, 0 ; # More Y coefficients - 0: 10-63, 0, 0 ; # Remaining Y coefficients - -Here is an example of a successive-approximation script. This is equivalent -to the default script used by "cjpeg -progressive" for YCbCr images: - - # Initial DC scan for Y,Cb,Cr (lowest bit not sent) - 0,1,2: 0-0, 0, 1 ; - # First AC scan: send first 5 Y AC coefficients, minus 2 lowest bits: - 0: 1-5, 0, 2 ; - # Send all Cr,Cb AC coefficients, minus lowest bit: - # (chroma data is usually too small to be worth subdividing further; - # but note we send Cr first since eye is least sensitive to Cb) - 2: 1-63, 0, 1 ; - 1: 1-63, 0, 1 ; - # Send remaining Y AC coefficients, minus 2 lowest bits: - 0: 6-63, 0, 2 ; - # Send next-to-lowest bit of all Y AC coefficients: - 0: 1-63, 2, 1 ; - # At this point we've sent all but the lowest bit of all coefficients. - # Send lowest bit of DC coefficients - 0,1,2: 0-0, 1, 0 ; - # Send lowest bit of AC coefficients - 2: 1-63, 1, 0 ; - 1: 1-63, 1, 0 ; - # Y AC lowest bit scan is last; it's usually the largest scan - 0: 1-63, 1, 0 ; - -It may be worth pointing out that this script is tuned for quality settings -of around 50 to 75. For lower quality settings, you'd probably want to use -a script with fewer stages of successive approximation (otherwise the -initial scans will be really bad). For higher quality settings, you might -want to use more stages of successive approximation (so that the initial -scans are not too large). diff --git a/project/jni/jpeg/wrbmp.c b/project/jni/jpeg/wrbmp.c deleted file mode 100644 index 3283b0f15..000000000 --- a/project/jni/jpeg/wrbmp.c +++ /dev/null @@ -1,442 +0,0 @@ -/* - * wrbmp.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to write output images in Microsoft "BMP" - * format (MS Windows 3.x and OS/2 1.x flavors). - * Either 8-bit colormapped or 24-bit full-color format can be written. - * No compression is supported. - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume output to - * an ordinary stdio stream. - * - * This code contributed by James Arthur Boucher. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef BMP_SUPPORTED - - -/* - * To support 12-bit JPEG data, we'd have to scale output down to 8 bits. - * This is not yet implemented. - */ - -#if BITS_IN_JSAMPLE != 8 - Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ -#endif - -/* - * Since BMP stores scanlines bottom-to-top, we have to invert the image - * from JPEG's top-to-bottom order. To do this, we save the outgoing data - * in a virtual array during put_pixel_row calls, then actually emit the - * BMP file during finish_output. The virtual array contains one JSAMPLE per - * pixel if the output is grayscale or colormapped, three if it is full color. - */ - -/* Private version of data destination object */ - -typedef struct { - struct djpeg_dest_struct pub; /* public fields */ - - boolean is_os2; /* saves the OS2 format request flag */ - - jvirt_sarray_ptr whole_image; /* needed to reverse row order */ - JDIMENSION data_width; /* JSAMPLEs per row */ - JDIMENSION row_width; /* physical width of one row in the BMP file */ - int pad_bytes; /* number of padding bytes needed per row */ - JDIMENSION cur_output_row; /* next row# to write to virtual array */ -} bmp_dest_struct; - -typedef bmp_dest_struct * bmp_dest_ptr; - - -/* Forward declarations */ -LOCAL(void) write_colormap - JPP((j_decompress_ptr cinfo, bmp_dest_ptr dest, - int map_colors, int map_entry_size)); - - -/* - * Write some pixel data. - * In this module rows_supplied will always be 1. - */ - -METHODDEF(void) -put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -/* This version is for writing 24-bit pixels */ -{ - bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; - JSAMPARRAY image_ptr; - register JSAMPROW inptr, outptr; - register JDIMENSION col; - int pad; - - /* Access next row in virtual array */ - image_ptr = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->whole_image, - dest->cur_output_row, (JDIMENSION) 1, TRUE); - dest->cur_output_row++; - - /* Transfer data. Note destination values must be in BGR order - * (even though Microsoft's own documents say the opposite). - */ - inptr = dest->pub.buffer[0]; - outptr = image_ptr[0]; - for (col = cinfo->output_width; col > 0; col--) { - outptr[2] = *inptr++; /* can omit GETJSAMPLE() safely */ - outptr[1] = *inptr++; - outptr[0] = *inptr++; - outptr += 3; - } - - /* Zero out the pad bytes. */ - pad = dest->pad_bytes; - while (--pad >= 0) - *outptr++ = 0; -} - -METHODDEF(void) -put_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -/* This version is for grayscale OR quantized color output */ -{ - bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; - JSAMPARRAY image_ptr; - register JSAMPROW inptr, outptr; - register JDIMENSION col; - int pad; - - /* Access next row in virtual array */ - image_ptr = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->whole_image, - dest->cur_output_row, (JDIMENSION) 1, TRUE); - dest->cur_output_row++; - - /* Transfer data. */ - inptr = dest->pub.buffer[0]; - outptr = image_ptr[0]; - for (col = cinfo->output_width; col > 0; col--) { - *outptr++ = *inptr++; /* can omit GETJSAMPLE() safely */ - } - - /* Zero out the pad bytes. */ - pad = dest->pad_bytes; - while (--pad >= 0) - *outptr++ = 0; -} - - -/* - * Startup: normally writes the file header. - * In this module we may as well postpone everything until finish_output. - */ - -METHODDEF(void) -start_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - /* no work here */ -} - - -/* - * Finish up at the end of the file. - * - * Here is where we really output the BMP file. - * - * First, routines to write the Windows and OS/2 variants of the file header. - */ - -LOCAL(void) -write_bmp_header (j_decompress_ptr cinfo, bmp_dest_ptr dest) -/* Write a Windows-style BMP file header, including colormap if needed */ -{ - char bmpfileheader[14]; - char bmpinfoheader[40]; -#define PUT_2B(array,offset,value) \ - (array[offset] = (char) ((value) & 0xFF), \ - array[offset+1] = (char) (((value) >> 8) & 0xFF)) -#define PUT_4B(array,offset,value) \ - (array[offset] = (char) ((value) & 0xFF), \ - array[offset+1] = (char) (((value) >> 8) & 0xFF), \ - array[offset+2] = (char) (((value) >> 16) & 0xFF), \ - array[offset+3] = (char) (((value) >> 24) & 0xFF)) - INT32 headersize, bfSize; - int bits_per_pixel, cmap_entries; - - /* Compute colormap size and total file size */ - if (cinfo->out_color_space == JCS_RGB) { - if (cinfo->quantize_colors) { - /* Colormapped RGB */ - bits_per_pixel = 8; - cmap_entries = 256; - } else { - /* Unquantized, full color RGB */ - bits_per_pixel = 24; - cmap_entries = 0; - } - } else { - /* Grayscale output. We need to fake a 256-entry colormap. */ - bits_per_pixel = 8; - cmap_entries = 256; - } - /* File size */ - headersize = 14 + 40 + cmap_entries * 4; /* Header and colormap */ - bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height; - - /* Set unused fields of header to 0 */ - MEMZERO(bmpfileheader, SIZEOF(bmpfileheader)); - MEMZERO(bmpinfoheader, SIZEOF(bmpinfoheader)); - - /* Fill the file header */ - bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */ - bmpfileheader[1] = 0x4D; - PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */ - /* we leave bfReserved1 & bfReserved2 = 0 */ - PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */ - - /* Fill the info header (Microsoft calls this a BITMAPINFOHEADER) */ - PUT_2B(bmpinfoheader, 0, 40); /* biSize */ - PUT_4B(bmpinfoheader, 4, cinfo->output_width); /* biWidth */ - PUT_4B(bmpinfoheader, 8, cinfo->output_height); /* biHeight */ - PUT_2B(bmpinfoheader, 12, 1); /* biPlanes - must be 1 */ - PUT_2B(bmpinfoheader, 14, bits_per_pixel); /* biBitCount */ - /* we leave biCompression = 0, for none */ - /* we leave biSizeImage = 0; this is correct for uncompressed data */ - if (cinfo->density_unit == 2) { /* if have density in dots/cm, then */ - PUT_4B(bmpinfoheader, 24, (INT32) (cinfo->X_density*100)); /* XPels/M */ - PUT_4B(bmpinfoheader, 28, (INT32) (cinfo->Y_density*100)); /* XPels/M */ - } - PUT_2B(bmpinfoheader, 32, cmap_entries); /* biClrUsed */ - /* we leave biClrImportant = 0 */ - - if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14) - ERREXIT(cinfo, JERR_FILE_WRITE); - if (JFWRITE(dest->pub.output_file, bmpinfoheader, 40) != (size_t) 40) - ERREXIT(cinfo, JERR_FILE_WRITE); - - if (cmap_entries > 0) - write_colormap(cinfo, dest, cmap_entries, 4); -} - - -LOCAL(void) -write_os2_header (j_decompress_ptr cinfo, bmp_dest_ptr dest) -/* Write an OS2-style BMP file header, including colormap if needed */ -{ - char bmpfileheader[14]; - char bmpcoreheader[12]; - INT32 headersize, bfSize; - int bits_per_pixel, cmap_entries; - - /* Compute colormap size and total file size */ - if (cinfo->out_color_space == JCS_RGB) { - if (cinfo->quantize_colors) { - /* Colormapped RGB */ - bits_per_pixel = 8; - cmap_entries = 256; - } else { - /* Unquantized, full color RGB */ - bits_per_pixel = 24; - cmap_entries = 0; - } - } else { - /* Grayscale output. We need to fake a 256-entry colormap. */ - bits_per_pixel = 8; - cmap_entries = 256; - } - /* File size */ - headersize = 14 + 12 + cmap_entries * 3; /* Header and colormap */ - bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height; - - /* Set unused fields of header to 0 */ - MEMZERO(bmpfileheader, SIZEOF(bmpfileheader)); - MEMZERO(bmpcoreheader, SIZEOF(bmpcoreheader)); - - /* Fill the file header */ - bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */ - bmpfileheader[1] = 0x4D; - PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */ - /* we leave bfReserved1 & bfReserved2 = 0 */ - PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */ - - /* Fill the info header (Microsoft calls this a BITMAPCOREHEADER) */ - PUT_2B(bmpcoreheader, 0, 12); /* bcSize */ - PUT_2B(bmpcoreheader, 4, cinfo->output_width); /* bcWidth */ - PUT_2B(bmpcoreheader, 6, cinfo->output_height); /* bcHeight */ - PUT_2B(bmpcoreheader, 8, 1); /* bcPlanes - must be 1 */ - PUT_2B(bmpcoreheader, 10, bits_per_pixel); /* bcBitCount */ - - if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14) - ERREXIT(cinfo, JERR_FILE_WRITE); - if (JFWRITE(dest->pub.output_file, bmpcoreheader, 12) != (size_t) 12) - ERREXIT(cinfo, JERR_FILE_WRITE); - - if (cmap_entries > 0) - write_colormap(cinfo, dest, cmap_entries, 3); -} - - -/* - * Write the colormap. - * Windows uses BGR0 map entries; OS/2 uses BGR entries. - */ - -LOCAL(void) -write_colormap (j_decompress_ptr cinfo, bmp_dest_ptr dest, - int map_colors, int map_entry_size) -{ - JSAMPARRAY colormap = cinfo->colormap; - int num_colors = cinfo->actual_number_of_colors; - FILE * outfile = dest->pub.output_file; - int i; - - if (colormap != NULL) { - if (cinfo->out_color_components == 3) { - /* Normal case with RGB colormap */ - for (i = 0; i < num_colors; i++) { - putc(GETJSAMPLE(colormap[2][i]), outfile); - putc(GETJSAMPLE(colormap[1][i]), outfile); - putc(GETJSAMPLE(colormap[0][i]), outfile); - if (map_entry_size == 4) - putc(0, outfile); - } - } else { - /* Grayscale colormap (only happens with grayscale quantization) */ - for (i = 0; i < num_colors; i++) { - putc(GETJSAMPLE(colormap[0][i]), outfile); - putc(GETJSAMPLE(colormap[0][i]), outfile); - putc(GETJSAMPLE(colormap[0][i]), outfile); - if (map_entry_size == 4) - putc(0, outfile); - } - } - } else { - /* If no colormap, must be grayscale data. Generate a linear "map". */ - for (i = 0; i < 256; i++) { - putc(i, outfile); - putc(i, outfile); - putc(i, outfile); - if (map_entry_size == 4) - putc(0, outfile); - } - } - /* Pad colormap with zeros to ensure specified number of colormap entries */ - if (i > map_colors) - ERREXIT1(cinfo, JERR_TOO_MANY_COLORS, i); - for (; i < map_colors; i++) { - putc(0, outfile); - putc(0, outfile); - putc(0, outfile); - if (map_entry_size == 4) - putc(0, outfile); - } -} - - -METHODDEF(void) -finish_output_bmp (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - bmp_dest_ptr dest = (bmp_dest_ptr) dinfo; - register FILE * outfile = dest->pub.output_file; - JSAMPARRAY image_ptr; - register JSAMPROW data_ptr; - JDIMENSION row; - register JDIMENSION col; - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; - - /* Write the header and colormap */ - if (dest->is_os2) - write_os2_header(cinfo, dest); - else - write_bmp_header(cinfo, dest); - - /* Write the file body from our virtual array */ - for (row = cinfo->output_height; row > 0; row--) { - if (progress != NULL) { - progress->pub.pass_counter = (long) (cinfo->output_height - row); - progress->pub.pass_limit = (long) cinfo->output_height; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } - image_ptr = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->whole_image, row-1, (JDIMENSION) 1, FALSE); - data_ptr = image_ptr[0]; - for (col = dest->row_width; col > 0; col--) { - putc(GETJSAMPLE(*data_ptr), outfile); - data_ptr++; - } - } - if (progress != NULL) - progress->completed_extra_passes++; - - /* Make sure we wrote the output file OK */ - fflush(outfile); - if (ferror(outfile)) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * The module selection routine for BMP format output. - */ - -GLOBAL(djpeg_dest_ptr) -jinit_write_bmp (j_decompress_ptr cinfo, boolean is_os2) -{ - bmp_dest_ptr dest; - JDIMENSION row_width; - - /* Create module interface object, fill in method pointers */ - dest = (bmp_dest_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(bmp_dest_struct)); - dest->pub.start_output = start_output_bmp; - dest->pub.finish_output = finish_output_bmp; - dest->is_os2 = is_os2; - - if (cinfo->out_color_space == JCS_GRAYSCALE) { - dest->pub.put_pixel_rows = put_gray_rows; - } else if (cinfo->out_color_space == JCS_RGB) { - if (cinfo->quantize_colors) - dest->pub.put_pixel_rows = put_gray_rows; - else - dest->pub.put_pixel_rows = put_pixel_rows; - } else { - ERREXIT(cinfo, JERR_BMP_COLORSPACE); - } - - /* Calculate output image dimensions so we can allocate space */ - jpeg_calc_output_dimensions(cinfo); - - /* Determine width of rows in the BMP file (padded to 4-byte boundary). */ - row_width = cinfo->output_width * cinfo->output_components; - dest->data_width = row_width; - while ((row_width & 3) != 0) row_width++; - dest->row_width = row_width; - dest->pad_bytes = (int) (row_width - dest->data_width); - - /* Allocate space for inversion array, prepare for write pass */ - dest->whole_image = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - row_width, cinfo->output_height, (JDIMENSION) 1); - dest->cur_output_row = 0; - if (cinfo->progress != NULL) { - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; - progress->total_extra_passes++; /* count file input as separate pass */ - } - - /* Create decompressor output buffer. */ - dest->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, row_width, (JDIMENSION) 1); - dest->pub.buffer_height = 1; - - return (djpeg_dest_ptr) dest; -} - -#endif /* BMP_SUPPORTED */ diff --git a/project/jni/jpeg/wrgif.c b/project/jni/jpeg/wrgif.c deleted file mode 100644 index 5fe832839..000000000 --- a/project/jni/jpeg/wrgif.c +++ /dev/null @@ -1,399 +0,0 @@ -/* - * wrgif.c - * - * Copyright (C) 1991-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to write output images in GIF format. - * - ************************************************************************** - * NOTE: to avoid entanglements with Unisys' patent on LZW compression, * - * this code has been modified to output "uncompressed GIF" files. * - * There is no trace of the LZW algorithm in this file. * - ************************************************************************** - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume output to - * an ordinary stdio stream. - */ - -/* - * This code is loosely based on ppmtogif from the PBMPLUS distribution - * of Feb. 1991. That file contains the following copyright notice: - * Based on GIFENCODE by David Rowley . - * Lempel-Ziv compression based on "compress" by Spencer W. Thomas et al. - * Copyright (C) 1989 by Jef Poskanzer. - * Permission to use, copy, modify, and distribute this software and its - * documentation for any purpose and without fee is hereby granted, provided - * that the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation. This software is provided "as is" without express or - * implied warranty. - * - * We are also required to state that - * "The Graphics Interchange Format(c) is the Copyright property of - * CompuServe Incorporated. GIF(sm) is a Service Mark property of - * CompuServe Incorporated." - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef GIF_SUPPORTED - - -/* Private version of data destination object */ - -typedef struct { - struct djpeg_dest_struct pub; /* public fields */ - - j_decompress_ptr cinfo; /* back link saves passing separate parm */ - - /* State for packing variable-width codes into a bitstream */ - int n_bits; /* current number of bits/code */ - int maxcode; /* maximum code, given n_bits */ - INT32 cur_accum; /* holds bits not yet output */ - int cur_bits; /* # of bits in cur_accum */ - - /* State for GIF code assignment */ - int ClearCode; /* clear code (doesn't change) */ - int EOFCode; /* EOF code (ditto) */ - int code_counter; /* counts output symbols */ - - /* GIF data packet construction buffer */ - int bytesinpkt; /* # of bytes in current packet */ - char packetbuf[256]; /* workspace for accumulating packet */ - -} gif_dest_struct; - -typedef gif_dest_struct * gif_dest_ptr; - -/* Largest value that will fit in N bits */ -#define MAXCODE(n_bits) ((1 << (n_bits)) - 1) - - -/* - * Routines to package finished data bytes into GIF data blocks. - * A data block consists of a count byte (1..255) and that many data bytes. - */ - -LOCAL(void) -flush_packet (gif_dest_ptr dinfo) -/* flush any accumulated data */ -{ - if (dinfo->bytesinpkt > 0) { /* never write zero-length packet */ - dinfo->packetbuf[0] = (char) dinfo->bytesinpkt++; - if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt) - != (size_t) dinfo->bytesinpkt) - ERREXIT(dinfo->cinfo, JERR_FILE_WRITE); - dinfo->bytesinpkt = 0; - } -} - - -/* Add a character to current packet; flush to disk if necessary */ -#define CHAR_OUT(dinfo,c) \ - { (dinfo)->packetbuf[++(dinfo)->bytesinpkt] = (char) (c); \ - if ((dinfo)->bytesinpkt >= 255) \ - flush_packet(dinfo); \ - } - - -/* Routine to convert variable-width codes into a byte stream */ - -LOCAL(void) -output (gif_dest_ptr dinfo, int code) -/* Emit a code of n_bits bits */ -/* Uses cur_accum and cur_bits to reblock into 8-bit bytes */ -{ - dinfo->cur_accum |= ((INT32) code) << dinfo->cur_bits; - dinfo->cur_bits += dinfo->n_bits; - - while (dinfo->cur_bits >= 8) { - CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF); - dinfo->cur_accum >>= 8; - dinfo->cur_bits -= 8; - } -} - - -/* The pseudo-compression algorithm. - * - * In this module we simply output each pixel value as a separate symbol; - * thus, no compression occurs. In fact, there is expansion of one bit per - * pixel, because we use a symbol width one bit wider than the pixel width. - * - * GIF ordinarily uses variable-width symbols, and the decoder will expect - * to ratchet up the symbol width after a fixed number of symbols. - * To simplify the logic and keep the expansion penalty down, we emit a - * GIF Clear code to reset the decoder just before the width would ratchet up. - * Thus, all the symbols in the output file will have the same bit width. - * Note that emitting the Clear codes at the right times is a mere matter of - * counting output symbols and is in no way dependent on the LZW patent. - * - * With a small basic pixel width (low color count), Clear codes will be - * needed very frequently, causing the file to expand even more. So this - * simplistic approach wouldn't work too well on bilevel images, for example. - * But for output of JPEG conversions the pixel width will usually be 8 bits - * (129 to 256 colors), so the overhead added by Clear symbols is only about - * one symbol in every 256. - */ - -LOCAL(void) -compress_init (gif_dest_ptr dinfo, int i_bits) -/* Initialize pseudo-compressor */ -{ - /* init all the state variables */ - dinfo->n_bits = i_bits; - dinfo->maxcode = MAXCODE(dinfo->n_bits); - dinfo->ClearCode = (1 << (i_bits - 1)); - dinfo->EOFCode = dinfo->ClearCode + 1; - dinfo->code_counter = dinfo->ClearCode + 2; - /* init output buffering vars */ - dinfo->bytesinpkt = 0; - dinfo->cur_accum = 0; - dinfo->cur_bits = 0; - /* GIF specifies an initial Clear code */ - output(dinfo, dinfo->ClearCode); -} - - -LOCAL(void) -compress_pixel (gif_dest_ptr dinfo, int c) -/* Accept and "compress" one pixel value. - * The given value must be less than n_bits wide. - */ -{ - /* Output the given pixel value as a symbol. */ - output(dinfo, c); - /* Issue Clear codes often enough to keep the reader from ratcheting up - * its symbol size. - */ - if (dinfo->code_counter < dinfo->maxcode) { - dinfo->code_counter++; - } else { - output(dinfo, dinfo->ClearCode); - dinfo->code_counter = dinfo->ClearCode + 2; /* reset the counter */ - } -} - - -LOCAL(void) -compress_term (gif_dest_ptr dinfo) -/* Clean up at end */ -{ - /* Send an EOF code */ - output(dinfo, dinfo->EOFCode); - /* Flush the bit-packing buffer */ - if (dinfo->cur_bits > 0) { - CHAR_OUT(dinfo, dinfo->cur_accum & 0xFF); - } - /* Flush the packet buffer */ - flush_packet(dinfo); -} - - -/* GIF header construction */ - - -LOCAL(void) -put_word (gif_dest_ptr dinfo, unsigned int w) -/* Emit a 16-bit word, LSB first */ -{ - putc(w & 0xFF, dinfo->pub.output_file); - putc((w >> 8) & 0xFF, dinfo->pub.output_file); -} - - -LOCAL(void) -put_3bytes (gif_dest_ptr dinfo, int val) -/* Emit 3 copies of same byte value --- handy subr for colormap construction */ -{ - putc(val, dinfo->pub.output_file); - putc(val, dinfo->pub.output_file); - putc(val, dinfo->pub.output_file); -} - - -LOCAL(void) -emit_header (gif_dest_ptr dinfo, int num_colors, JSAMPARRAY colormap) -/* Output the GIF file header, including color map */ -/* If colormap==NULL, synthesize a gray-scale colormap */ -{ - int BitsPerPixel, ColorMapSize, InitCodeSize, FlagByte; - int cshift = dinfo->cinfo->data_precision - 8; - int i; - - if (num_colors > 256) - ERREXIT1(dinfo->cinfo, JERR_TOO_MANY_COLORS, num_colors); - /* Compute bits/pixel and related values */ - BitsPerPixel = 1; - while (num_colors > (1 << BitsPerPixel)) - BitsPerPixel++; - ColorMapSize = 1 << BitsPerPixel; - if (BitsPerPixel <= 1) - InitCodeSize = 2; - else - InitCodeSize = BitsPerPixel; - /* - * Write the GIF header. - * Note that we generate a plain GIF87 header for maximum compatibility. - */ - putc('G', dinfo->pub.output_file); - putc('I', dinfo->pub.output_file); - putc('F', dinfo->pub.output_file); - putc('8', dinfo->pub.output_file); - putc('7', dinfo->pub.output_file); - putc('a', dinfo->pub.output_file); - /* Write the Logical Screen Descriptor */ - put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); - put_word(dinfo, (unsigned int) dinfo->cinfo->output_height); - FlagByte = 0x80; /* Yes, there is a global color table */ - FlagByte |= (BitsPerPixel-1) << 4; /* color resolution */ - FlagByte |= (BitsPerPixel-1); /* size of global color table */ - putc(FlagByte, dinfo->pub.output_file); - putc(0, dinfo->pub.output_file); /* Background color index */ - putc(0, dinfo->pub.output_file); /* Reserved (aspect ratio in GIF89) */ - /* Write the Global Color Map */ - /* If the color map is more than 8 bits precision, */ - /* we reduce it to 8 bits by shifting */ - for (i=0; i < ColorMapSize; i++) { - if (i < num_colors) { - if (colormap != NULL) { - if (dinfo->cinfo->out_color_space == JCS_RGB) { - /* Normal case: RGB color map */ - putc(GETJSAMPLE(colormap[0][i]) >> cshift, dinfo->pub.output_file); - putc(GETJSAMPLE(colormap[1][i]) >> cshift, dinfo->pub.output_file); - putc(GETJSAMPLE(colormap[2][i]) >> cshift, dinfo->pub.output_file); - } else { - /* Grayscale "color map": possible if quantizing grayscale image */ - put_3bytes(dinfo, GETJSAMPLE(colormap[0][i]) >> cshift); - } - } else { - /* Create a gray-scale map of num_colors values, range 0..255 */ - put_3bytes(dinfo, (i * 255 + (num_colors-1)/2) / (num_colors-1)); - } - } else { - /* fill out the map to a power of 2 */ - put_3bytes(dinfo, 0); - } - } - /* Write image separator and Image Descriptor */ - putc(',', dinfo->pub.output_file); /* separator */ - put_word(dinfo, 0); /* left/top offset */ - put_word(dinfo, 0); - put_word(dinfo, (unsigned int) dinfo->cinfo->output_width); /* image size */ - put_word(dinfo, (unsigned int) dinfo->cinfo->output_height); - /* flag byte: not interlaced, no local color map */ - putc(0x00, dinfo->pub.output_file); - /* Write Initial Code Size byte */ - putc(InitCodeSize, dinfo->pub.output_file); - - /* Initialize for "compression" of image data */ - compress_init(dinfo, InitCodeSize+1); -} - - -/* - * Startup: write the file header. - */ - -METHODDEF(void) -start_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - gif_dest_ptr dest = (gif_dest_ptr) dinfo; - - if (cinfo->quantize_colors) - emit_header(dest, cinfo->actual_number_of_colors, cinfo->colormap); - else - emit_header(dest, 256, (JSAMPARRAY) NULL); -} - - -/* - * Write some pixel data. - * In this module rows_supplied will always be 1. - */ - -METHODDEF(void) -put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -{ - gif_dest_ptr dest = (gif_dest_ptr) dinfo; - register JSAMPROW ptr; - register JDIMENSION col; - - ptr = dest->pub.buffer[0]; - for (col = cinfo->output_width; col > 0; col--) { - compress_pixel(dest, GETJSAMPLE(*ptr++)); - } -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_output_gif (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - gif_dest_ptr dest = (gif_dest_ptr) dinfo; - - /* Flush "compression" mechanism */ - compress_term(dest); - /* Write a zero-length data block to end the series */ - putc(0, dest->pub.output_file); - /* Write the GIF terminator mark */ - putc(';', dest->pub.output_file); - /* Make sure we wrote the output file OK */ - fflush(dest->pub.output_file); - if (ferror(dest->pub.output_file)) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * The module selection routine for GIF format output. - */ - -GLOBAL(djpeg_dest_ptr) -jinit_write_gif (j_decompress_ptr cinfo) -{ - gif_dest_ptr dest; - - /* Create module interface object, fill in method pointers */ - dest = (gif_dest_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(gif_dest_struct)); - dest->cinfo = cinfo; /* make back link for subroutines */ - dest->pub.start_output = start_output_gif; - dest->pub.put_pixel_rows = put_pixel_rows; - dest->pub.finish_output = finish_output_gif; - - if (cinfo->out_color_space != JCS_GRAYSCALE && - cinfo->out_color_space != JCS_RGB) - ERREXIT(cinfo, JERR_GIF_COLORSPACE); - - /* Force quantization if color or if > 8 bits input */ - if (cinfo->out_color_space != JCS_GRAYSCALE || cinfo->data_precision > 8) { - /* Force quantization to at most 256 colors */ - cinfo->quantize_colors = TRUE; - if (cinfo->desired_number_of_colors > 256) - cinfo->desired_number_of_colors = 256; - } - - /* Calculate output image dimensions so we can allocate space */ - jpeg_calc_output_dimensions(cinfo); - - if (cinfo->output_components != 1) /* safety check: just one component? */ - ERREXIT(cinfo, JERR_GIF_BUG); - - /* Create decompressor output buffer. */ - dest->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->output_width, (JDIMENSION) 1); - dest->pub.buffer_height = 1; - - return (djpeg_dest_ptr) dest; -} - -#endif /* GIF_SUPPORTED */ diff --git a/project/jni/jpeg/wrjpgcom.1 b/project/jni/jpeg/wrjpgcom.1 deleted file mode 100644 index d419a9999..000000000 --- a/project/jni/jpeg/wrjpgcom.1 +++ /dev/null @@ -1,103 +0,0 @@ -.TH WRJPGCOM 1 "15 June 1995" -.SH NAME -wrjpgcom \- insert text comments into a JPEG file -.SH SYNOPSIS -.B wrjpgcom -[ -.B \-replace -] -[ -.BI \-comment " text" -] -[ -.BI \-cfile " name" -] -[ -.I filename -] -.LP -.SH DESCRIPTION -.LP -.B wrjpgcom -reads the named JPEG/JFIF file, or the standard input if no file is named, -and generates a new JPEG/JFIF file on standard output. A comment block is -added to the file. -.PP -The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. -Although the standard doesn't actually define what COM blocks are for, they -are widely used to hold user-supplied text strings. This lets you add -annotations, titles, index terms, etc to your JPEG files, and later retrieve -them as text. COM blocks do not interfere with the image stored in the JPEG -file. The maximum size of a COM block is 64K, but you can have as many of -them as you like in one JPEG file. -.PP -.B wrjpgcom -adds a COM block, containing text you provide, to a JPEG file. -Ordinarily, the COM block is added after any existing COM blocks; but you -can delete the old COM blocks if you wish. -.SH OPTIONS -Switch names may be abbreviated, and are not case sensitive. -.TP -.B \-replace -Delete any existing COM blocks from the file. -.TP -.BI \-comment " text" -Supply text for new COM block on command line. -.TP -.BI \-cfile " name" -Read text for new COM block from named file. -.PP -If you have only one line of comment text to add, you can provide it on the -command line with -.BR \-comment . -The comment text must be surrounded with quotes so that it is treated as a -single argument. Longer comments can be read from a text file. -.PP -If you give neither -.B \-comment -nor -.BR \-cfile , -then -.B wrjpgcom -will read the comment text from standard input. (In this case an input image -file name MUST be supplied, so that the source JPEG file comes from somewhere -else.) You can enter multiple lines, up to 64KB worth. Type an end-of-file -indicator (usually control-D) to terminate the comment text entry. -.PP -.B wrjpgcom -will not add a COM block if the provided comment string is empty. Therefore -\fB\-replace \-comment ""\fR can be used to delete all COM blocks from a file. -.SH EXAMPLES -.LP -Add a short comment to in.jpg, producing out.jpg: -.IP -.B wrjpgcom \-c -\fI"View of my back yard" in.jpg -.B > -.I out.jpg -.PP -Attach a long comment previously stored in comment.txt: -.IP -.B wrjpgcom -.I in.jpg -.B < -.I comment.txt -.B > -.I out.jpg -.PP -or equivalently -.IP -.B wrjpgcom -.B -cfile -.I comment.txt -.B < -.I in.jpg -.B > -.I out.jpg -.SH SEE ALSO -.BR cjpeg (1), -.BR djpeg (1), -.BR jpegtran (1), -.BR rdjpgcom (1) -.SH AUTHOR -Independent JPEG Group diff --git a/project/jni/jpeg/wrjpgcom.c b/project/jni/jpeg/wrjpgcom.c deleted file mode 100644 index 8c04b0551..000000000 --- a/project/jni/jpeg/wrjpgcom.c +++ /dev/null @@ -1,583 +0,0 @@ -/* - * wrjpgcom.c - * - * Copyright (C) 1994-1997, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains a very simple stand-alone application that inserts - * user-supplied text as a COM (comment) marker in a JFIF file. - * This may be useful as an example of the minimum logic needed to parse - * JPEG markers. - */ - -#define JPEG_CJPEG_DJPEG /* to get the command-line config symbols */ -#include "jinclude.h" /* get auto-config symbols, */ - -#ifndef HAVE_STDLIB_H /* should declare malloc() */ -extern void * malloc (); -#endif -#include /* to declare isupper(), tolower() */ -#ifdef USE_SETMODE -#include /* to declare setmode()'s parameter macros */ -/* If you have setmode() but not , just delete this line: */ -#include /* to declare setmode() */ -#endif - -#ifdef USE_CCOMMAND /* command-line reader for Macintosh */ -#ifdef __MWERKS__ -#include /* Metrowerks needs this */ -#include /* ... and this */ -#endif -#ifdef THINK_C -#include /* Think declares it here */ -#endif -#endif - -#ifdef DONT_USE_B_MODE /* define mode parameters for fopen() */ -#define READ_BINARY "r" -#define WRITE_BINARY "w" -#else -#ifdef VMS /* VMS is very nonstandard */ -#define READ_BINARY "rb", "ctx=stm" -#define WRITE_BINARY "wb", "ctx=stm" -#else /* standard ANSI-compliant case */ -#define READ_BINARY "rb" -#define WRITE_BINARY "wb" -#endif -#endif - -#ifndef EXIT_FAILURE /* define exit() codes if not provided */ -#define EXIT_FAILURE 1 -#endif -#ifndef EXIT_SUCCESS -#ifdef VMS -#define EXIT_SUCCESS 1 /* VMS is very nonstandard */ -#else -#define EXIT_SUCCESS 0 -#endif -#endif - -/* Reduce this value if your malloc() can't allocate blocks up to 64K. - * On DOS, compiling in large model is usually a better solution. - */ - -#ifndef MAX_COM_LENGTH -#define MAX_COM_LENGTH 65000L /* must be <= 65533 in any case */ -#endif - - -/* - * These macros are used to read the input file and write the output file. - * To reuse this code in another application, you might need to change these. - */ - -static FILE * infile; /* input JPEG file */ - -/* Return next input byte, or EOF if no more */ -#define NEXTBYTE() getc(infile) - -static FILE * outfile; /* output JPEG file */ - -/* Emit an output byte */ -#define PUTBYTE(x) putc((x), outfile) - - -/* Error exit handler */ -#define ERREXIT(msg) (fprintf(stderr, "%s\n", msg), exit(EXIT_FAILURE)) - - -/* Read one byte, testing for EOF */ -static int -read_1_byte (void) -{ - int c; - - c = NEXTBYTE(); - if (c == EOF) - ERREXIT("Premature EOF in JPEG file"); - return c; -} - -/* Read 2 bytes, convert to unsigned int */ -/* All 2-byte quantities in JPEG markers are MSB first */ -static unsigned int -read_2_bytes (void) -{ - int c1, c2; - - c1 = NEXTBYTE(); - if (c1 == EOF) - ERREXIT("Premature EOF in JPEG file"); - c2 = NEXTBYTE(); - if (c2 == EOF) - ERREXIT("Premature EOF in JPEG file"); - return (((unsigned int) c1) << 8) + ((unsigned int) c2); -} - - -/* Routines to write data to output file */ - -static void -write_1_byte (int c) -{ - PUTBYTE(c); -} - -static void -write_2_bytes (unsigned int val) -{ - PUTBYTE((val >> 8) & 0xFF); - PUTBYTE(val & 0xFF); -} - -static void -write_marker (int marker) -{ - PUTBYTE(0xFF); - PUTBYTE(marker); -} - -static void -copy_rest_of_file (void) -{ - int c; - - while ((c = NEXTBYTE()) != EOF) - PUTBYTE(c); -} - - -/* - * JPEG markers consist of one or more 0xFF bytes, followed by a marker - * code byte (which is not an FF). Here are the marker codes of interest - * in this program. (See jdmarker.c for a more complete list.) - */ - -#define M_SOF0 0xC0 /* Start Of Frame N */ -#define M_SOF1 0xC1 /* N indicates which compression process */ -#define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */ -#define M_SOF3 0xC3 -#define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ -#define M_SOF6 0xC6 -#define M_SOF7 0xC7 -#define M_SOF9 0xC9 -#define M_SOF10 0xCA -#define M_SOF11 0xCB -#define M_SOF13 0xCD -#define M_SOF14 0xCE -#define M_SOF15 0xCF -#define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */ -#define M_EOI 0xD9 /* End Of Image (end of datastream) */ -#define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ -#define M_COM 0xFE /* COMment */ - - -/* - * Find the next JPEG marker and return its marker code. - * We expect at least one FF byte, possibly more if the compressor used FFs - * to pad the file. (Padding FFs will NOT be replicated in the output file.) - * There could also be non-FF garbage between markers. The treatment of such - * garbage is unspecified; we choose to skip over it but emit a warning msg. - * NB: this routine must not be used after seeing SOS marker, since it will - * not deal correctly with FF/00 sequences in the compressed image data... - */ - -static int -next_marker (void) -{ - int c; - int discarded_bytes = 0; - - /* Find 0xFF byte; count and skip any non-FFs. */ - c = read_1_byte(); - while (c != 0xFF) { - discarded_bytes++; - c = read_1_byte(); - } - /* Get marker code byte, swallowing any duplicate FF bytes. Extra FFs - * are legal as pad bytes, so don't count them in discarded_bytes. - */ - do { - c = read_1_byte(); - } while (c == 0xFF); - - if (discarded_bytes != 0) { - fprintf(stderr, "Warning: garbage data found in JPEG file\n"); - } - - return c; -} - - -/* - * Read the initial marker, which should be SOI. - * For a JFIF file, the first two bytes of the file should be literally - * 0xFF M_SOI. To be more general, we could use next_marker, but if the - * input file weren't actually JPEG at all, next_marker might read the whole - * file and then return a misleading error message... - */ - -static int -first_marker (void) -{ - int c1, c2; - - c1 = NEXTBYTE(); - c2 = NEXTBYTE(); - if (c1 != 0xFF || c2 != M_SOI) - ERREXIT("Not a JPEG file"); - return c2; -} - - -/* - * Most types of marker are followed by a variable-length parameter segment. - * This routine skips over the parameters for any marker we don't otherwise - * want to process. - * Note that we MUST skip the parameter segment explicitly in order not to - * be fooled by 0xFF bytes that might appear within the parameter segment; - * such bytes do NOT introduce new markers. - */ - -static void -copy_variable (void) -/* Copy an unknown or uninteresting variable-length marker */ -{ - unsigned int length; - - /* Get the marker parameter length count */ - length = read_2_bytes(); - write_2_bytes(length); - /* Length includes itself, so must be at least 2 */ - if (length < 2) - ERREXIT("Erroneous JPEG marker length"); - length -= 2; - /* Skip over the remaining bytes */ - while (length > 0) { - write_1_byte(read_1_byte()); - length--; - } -} - -static void -skip_variable (void) -/* Skip over an unknown or uninteresting variable-length marker */ -{ - unsigned int length; - - /* Get the marker parameter length count */ - length = read_2_bytes(); - /* Length includes itself, so must be at least 2 */ - if (length < 2) - ERREXIT("Erroneous JPEG marker length"); - length -= 2; - /* Skip over the remaining bytes */ - while (length > 0) { - (void) read_1_byte(); - length--; - } -} - - -/* - * Parse the marker stream until SOFn or EOI is seen; - * copy data to output, but discard COM markers unless keep_COM is true. - */ - -static int -scan_JPEG_header (int keep_COM) -{ - int marker; - - /* Expect SOI at start of file */ - if (first_marker() != M_SOI) - ERREXIT("Expected SOI marker first"); - write_marker(M_SOI); - - /* Scan miscellaneous markers until we reach SOFn. */ - for (;;) { - marker = next_marker(); - switch (marker) { - /* Note that marker codes 0xC4, 0xC8, 0xCC are not, and must not be, - * treated as SOFn. C4 in particular is actually DHT. - */ - case M_SOF0: /* Baseline */ - case M_SOF1: /* Extended sequential, Huffman */ - case M_SOF2: /* Progressive, Huffman */ - case M_SOF3: /* Lossless, Huffman */ - case M_SOF5: /* Differential sequential, Huffman */ - case M_SOF6: /* Differential progressive, Huffman */ - case M_SOF7: /* Differential lossless, Huffman */ - case M_SOF9: /* Extended sequential, arithmetic */ - case M_SOF10: /* Progressive, arithmetic */ - case M_SOF11: /* Lossless, arithmetic */ - case M_SOF13: /* Differential sequential, arithmetic */ - case M_SOF14: /* Differential progressive, arithmetic */ - case M_SOF15: /* Differential lossless, arithmetic */ - return marker; - - case M_SOS: /* should not see compressed data before SOF */ - ERREXIT("SOS without prior SOFn"); - break; - - case M_EOI: /* in case it's a tables-only JPEG stream */ - return marker; - - case M_COM: /* Existing COM: conditionally discard */ - if (keep_COM) { - write_marker(marker); - copy_variable(); - } else { - skip_variable(); - } - break; - - default: /* Anything else just gets copied */ - write_marker(marker); - copy_variable(); /* we assume it has a parameter count... */ - break; - } - } /* end loop */ -} - - -/* Command line parsing code */ - -static const char * progname; /* program name for error messages */ - - -static void -usage (void) -/* complain about bad command line */ -{ - fprintf(stderr, "wrjpgcom inserts a textual comment in a JPEG file.\n"); - fprintf(stderr, "You can add to or replace any existing comment(s).\n"); - - fprintf(stderr, "Usage: %s [switches] ", progname); -#ifdef TWO_FILE_COMMANDLINE - fprintf(stderr, "inputfile outputfile\n"); -#else - fprintf(stderr, "[inputfile]\n"); -#endif - - fprintf(stderr, "Switches (names may be abbreviated):\n"); - fprintf(stderr, " -replace Delete any existing comments\n"); - fprintf(stderr, " -comment \"text\" Insert comment with given text\n"); - fprintf(stderr, " -cfile name Read comment from named file\n"); - fprintf(stderr, "Notice that you must put quotes around the comment text\n"); - fprintf(stderr, "when you use -comment.\n"); - fprintf(stderr, "If you do not give either -comment or -cfile on the command line,\n"); - fprintf(stderr, "then the comment text is read from standard input.\n"); - fprintf(stderr, "It can be multiple lines, up to %u characters total.\n", - (unsigned int) MAX_COM_LENGTH); -#ifndef TWO_FILE_COMMANDLINE - fprintf(stderr, "You must specify an input JPEG file name when supplying\n"); - fprintf(stderr, "comment text from standard input.\n"); -#endif - - exit(EXIT_FAILURE); -} - - -static int -keymatch (char * arg, const char * keyword, int minchars) -/* Case-insensitive matching of (possibly abbreviated) keyword switches. */ -/* keyword is the constant keyword (must be lower case already), */ -/* minchars is length of minimum legal abbreviation. */ -{ - register int ca, ck; - register int nmatched = 0; - - while ((ca = *arg++) != '\0') { - if ((ck = *keyword++) == '\0') - return 0; /* arg longer than keyword, no good */ - if (isupper(ca)) /* force arg to lcase (assume ck is already) */ - ca = tolower(ca); - if (ca != ck) - return 0; /* no good */ - nmatched++; /* count matched characters */ - } - /* reached end of argument; fail if it's too short for unique abbrev */ - if (nmatched < minchars) - return 0; - return 1; /* A-OK */ -} - - -/* - * The main program. - */ - -int -main (int argc, char **argv) -{ - int argn; - char * arg; - int keep_COM = 1; - char * comment_arg = NULL; - FILE * comment_file = NULL; - unsigned int comment_length = 0; - int marker; - - /* On Mac, fetch a command line. */ -#ifdef USE_CCOMMAND - argc = ccommand(&argv); -#endif - - progname = argv[0]; - if (progname == NULL || progname[0] == 0) - progname = "wrjpgcom"; /* in case C library doesn't provide it */ - - /* Parse switches, if any */ - for (argn = 1; argn < argc; argn++) { - arg = argv[argn]; - if (arg[0] != '-') - break; /* not switch, must be file name */ - arg++; /* advance over '-' */ - if (keymatch(arg, "replace", 1)) { - keep_COM = 0; - } else if (keymatch(arg, "cfile", 2)) { - if (++argn >= argc) usage(); - if ((comment_file = fopen(argv[argn], "r")) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); - exit(EXIT_FAILURE); - } - } else if (keymatch(arg, "comment", 1)) { - if (++argn >= argc) usage(); - comment_arg = argv[argn]; - /* If the comment text starts with '"', then we are probably running - * under MS-DOG and must parse out the quoted string ourselves. Sigh. - */ - if (comment_arg[0] == '"') { - comment_arg = (char *) malloc((size_t) MAX_COM_LENGTH); - if (comment_arg == NULL) - ERREXIT("Insufficient memory"); - strcpy(comment_arg, argv[argn]+1); - for (;;) { - comment_length = (unsigned int) strlen(comment_arg); - if (comment_length > 0 && comment_arg[comment_length-1] == '"') { - comment_arg[comment_length-1] = '\0'; /* zap terminating quote */ - break; - } - if (++argn >= argc) - ERREXIT("Missing ending quote mark"); - strcat(comment_arg, " "); - strcat(comment_arg, argv[argn]); - } - } - comment_length = (unsigned int) strlen(comment_arg); - } else - usage(); - } - - /* Cannot use both -comment and -cfile. */ - if (comment_arg != NULL && comment_file != NULL) - usage(); - /* If there is neither -comment nor -cfile, we will read the comment text - * from stdin; in this case there MUST be an input JPEG file name. - */ - if (comment_arg == NULL && comment_file == NULL && argn >= argc) - usage(); - - /* Open the input file. */ - if (argn < argc) { - if ((infile = fopen(argv[argn], READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[argn]); - exit(EXIT_FAILURE); - } - } else { - /* default input file is stdin */ -#ifdef USE_SETMODE /* need to hack file mode? */ - setmode(fileno(stdin), O_BINARY); -#endif -#ifdef USE_FDOPEN /* need to re-open in binary mode? */ - if ((infile = fdopen(fileno(stdin), READ_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open stdin\n", progname); - exit(EXIT_FAILURE); - } -#else - infile = stdin; -#endif - } - - /* Open the output file. */ -#ifdef TWO_FILE_COMMANDLINE - /* Must have explicit output file name */ - if (argn != argc-2) { - fprintf(stderr, "%s: must name one input and one output file\n", - progname); - usage(); - } - if ((outfile = fopen(argv[argn+1], WRITE_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open %s\n", progname, argv[argn+1]); - exit(EXIT_FAILURE); - } -#else - /* Unix style: expect zero or one file name */ - if (argn < argc-1) { - fprintf(stderr, "%s: only one input file\n", progname); - usage(); - } - /* default output file is stdout */ -#ifdef USE_SETMODE /* need to hack file mode? */ - setmode(fileno(stdout), O_BINARY); -#endif -#ifdef USE_FDOPEN /* need to re-open in binary mode? */ - if ((outfile = fdopen(fileno(stdout), WRITE_BINARY)) == NULL) { - fprintf(stderr, "%s: can't open stdout\n", progname); - exit(EXIT_FAILURE); - } -#else - outfile = stdout; -#endif -#endif /* TWO_FILE_COMMANDLINE */ - - /* Collect comment text from comment_file or stdin, if necessary */ - if (comment_arg == NULL) { - FILE * src_file; - int c; - - comment_arg = (char *) malloc((size_t) MAX_COM_LENGTH); - if (comment_arg == NULL) - ERREXIT("Insufficient memory"); - comment_length = 0; - src_file = (comment_file != NULL ? comment_file : stdin); - while ((c = getc(src_file)) != EOF) { - if (comment_length >= (unsigned int) MAX_COM_LENGTH) { - fprintf(stderr, "Comment text may not exceed %u bytes\n", - (unsigned int) MAX_COM_LENGTH); - exit(EXIT_FAILURE); - } - comment_arg[comment_length++] = (char) c; - } - if (comment_file != NULL) - fclose(comment_file); - } - - /* Copy JPEG headers until SOFn marker; - * we will insert the new comment marker just before SOFn. - * This (a) causes the new comment to appear after, rather than before, - * existing comments; and (b) ensures that comments come after any JFIF - * or JFXX markers, as required by the JFIF specification. - */ - marker = scan_JPEG_header(keep_COM); - /* Insert the new COM marker, but only if nonempty text has been supplied */ - if (comment_length > 0) { - write_marker(M_COM); - write_2_bytes(comment_length + 2); - while (comment_length > 0) { - write_1_byte(*comment_arg++); - comment_length--; - } - } - /* Duplicate the remainder of the source file. - * Note that any COM markers occuring after SOF will not be touched. - */ - write_marker(marker); - copy_rest_of_file(); - - /* All done. */ - exit(EXIT_SUCCESS); - return 0; /* suppress no-return-value warnings */ -} diff --git a/project/jni/jpeg/wrppm.c b/project/jni/jpeg/wrppm.c deleted file mode 100644 index 6c6d90881..000000000 --- a/project/jni/jpeg/wrppm.c +++ /dev/null @@ -1,268 +0,0 @@ -/* - * wrppm.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to write output images in PPM/PGM format. - * The extended 2-byte-per-sample raw PPM/PGM formats are supported. - * The PBMPLUS library is NOT required to compile this software - * (but it is highly useful as a set of PPM image manipulation programs). - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume output to - * an ordinary stdio stream. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef PPM_SUPPORTED - - -/* - * For 12-bit JPEG data, we either downscale the values to 8 bits - * (to write standard byte-per-sample PPM/PGM files), or output - * nonstandard word-per-sample PPM/PGM files. Downscaling is done - * if PPM_NORAWWORD is defined (this can be done in the Makefile - * or in jconfig.h). - * (When the core library supports data precision reduction, a cleaner - * implementation will be to ask for that instead.) - */ - -#if BITS_IN_JSAMPLE == 8 -#define PUTPPMSAMPLE(ptr,v) *ptr++ = (char) (v) -#define BYTESPERSAMPLE 1 -#define PPM_MAXVAL 255 -#else -#ifdef PPM_NORAWWORD -#define PUTPPMSAMPLE(ptr,v) *ptr++ = (char) ((v) >> (BITS_IN_JSAMPLE-8)) -#define BYTESPERSAMPLE 1 -#define PPM_MAXVAL 255 -#else -/* The word-per-sample format always puts the LSB first. */ -#define PUTPPMSAMPLE(ptr,v) \ - { register int val_ = v; \ - *ptr++ = (char) (val_ & 0xFF); \ - *ptr++ = (char) ((val_ >> 8) & 0xFF); \ - } -#define BYTESPERSAMPLE 2 -#define PPM_MAXVAL ((1<pub.output_file, dest->iobuffer, dest->buffer_width); -} - - -/* - * This code is used when we have to copy the data and apply a pixel - * format translation. Typically this only happens in 12-bit mode. - */ - -METHODDEF(void) -copy_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -{ - ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; - register char * bufferptr; - register JSAMPROW ptr; - register JDIMENSION col; - - ptr = dest->pub.buffer[0]; - bufferptr = dest->iobuffer; - for (col = dest->samples_per_row; col > 0; col--) { - PUTPPMSAMPLE(bufferptr, GETJSAMPLE(*ptr++)); - } - (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); -} - - -/* - * Write some pixel data when color quantization is in effect. - * We have to demap the color index values to straight data. - */ - -METHODDEF(void) -put_demapped_rgb (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -{ - ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; - register char * bufferptr; - register int pixval; - register JSAMPROW ptr; - register JSAMPROW color_map0 = cinfo->colormap[0]; - register JSAMPROW color_map1 = cinfo->colormap[1]; - register JSAMPROW color_map2 = cinfo->colormap[2]; - register JDIMENSION col; - - ptr = dest->pub.buffer[0]; - bufferptr = dest->iobuffer; - for (col = cinfo->output_width; col > 0; col--) { - pixval = GETJSAMPLE(*ptr++); - PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map0[pixval])); - PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map1[pixval])); - PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map2[pixval])); - } - (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); -} - - -METHODDEF(void) -put_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -{ - ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; - register char * bufferptr; - register JSAMPROW ptr; - register JSAMPROW color_map = cinfo->colormap[0]; - register JDIMENSION col; - - ptr = dest->pub.buffer[0]; - bufferptr = dest->iobuffer; - for (col = cinfo->output_width; col > 0; col--) { - PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map[GETJSAMPLE(*ptr++)])); - } - (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); -} - - -/* - * Startup: write the file header. - */ - -METHODDEF(void) -start_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - ppm_dest_ptr dest = (ppm_dest_ptr) dinfo; - - /* Emit file header */ - switch (cinfo->out_color_space) { - case JCS_GRAYSCALE: - /* emit header for raw PGM format */ - fprintf(dest->pub.output_file, "P5\n%ld %ld\n%d\n", - (long) cinfo->output_width, (long) cinfo->output_height, - PPM_MAXVAL); - break; - case JCS_RGB: - /* emit header for raw PPM format */ - fprintf(dest->pub.output_file, "P6\n%ld %ld\n%d\n", - (long) cinfo->output_width, (long) cinfo->output_height, - PPM_MAXVAL); - break; - default: - ERREXIT(cinfo, JERR_PPM_COLORSPACE); - } -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_output_ppm (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - /* Make sure we wrote the output file OK */ - fflush(dinfo->output_file); - if (ferror(dinfo->output_file)) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * The module selection routine for PPM format output. - */ - -GLOBAL(djpeg_dest_ptr) -jinit_write_ppm (j_decompress_ptr cinfo) -{ - ppm_dest_ptr dest; - - /* Create module interface object, fill in method pointers */ - dest = (ppm_dest_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(ppm_dest_struct)); - dest->pub.start_output = start_output_ppm; - dest->pub.finish_output = finish_output_ppm; - - /* Calculate output image dimensions so we can allocate space */ - jpeg_calc_output_dimensions(cinfo); - - /* Create physical I/O buffer. Note we make this near on a PC. */ - dest->samples_per_row = cinfo->output_width * cinfo->out_color_components; - dest->buffer_width = dest->samples_per_row * (BYTESPERSAMPLE * SIZEOF(char)); - dest->iobuffer = (char *) (*cinfo->mem->alloc_small) - ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width); - - if (cinfo->quantize_colors || BITS_IN_JSAMPLE != 8 || - SIZEOF(JSAMPLE) != SIZEOF(char)) { - /* When quantizing, we need an output buffer for colormap indexes - * that's separate from the physical I/O buffer. We also need a - * separate buffer if pixel format translation must take place. - */ - dest->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->output_width * cinfo->output_components, (JDIMENSION) 1); - dest->pub.buffer_height = 1; - if (! cinfo->quantize_colors) - dest->pub.put_pixel_rows = copy_pixel_rows; - else if (cinfo->out_color_space == JCS_GRAYSCALE) - dest->pub.put_pixel_rows = put_demapped_gray; - else - dest->pub.put_pixel_rows = put_demapped_rgb; - } else { - /* We will fwrite() directly from decompressor output buffer. */ - /* Synthesize a JSAMPARRAY pointer structure */ - /* Cast here implies near->far pointer conversion on PCs */ - dest->pixrow = (JSAMPROW) dest->iobuffer; - dest->pub.buffer = & dest->pixrow; - dest->pub.buffer_height = 1; - dest->pub.put_pixel_rows = put_pixel_rows; - } - - return (djpeg_dest_ptr) dest; -} - -#endif /* PPM_SUPPORTED */ diff --git a/project/jni/jpeg/wrrle.c b/project/jni/jpeg/wrrle.c deleted file mode 100644 index a4e73372d..000000000 --- a/project/jni/jpeg/wrrle.c +++ /dev/null @@ -1,305 +0,0 @@ -/* - * wrrle.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to write output images in RLE format. - * The Utah Raster Toolkit library is required (version 3.1 or later). - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume output to - * an ordinary stdio stream. - * - * Based on code contributed by Mike Lijewski, - * with updates from Robert Hutchinson. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef RLE_SUPPORTED - -/* rle.h is provided by the Utah Raster Toolkit. */ - -#include - -/* - * We assume that JSAMPLE has the same representation as rle_pixel, - * to wit, "unsigned char". Hence we can't cope with 12- or 16-bit samples. - */ - -#if BITS_IN_JSAMPLE != 8 - Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ -#endif - - -/* - * Since RLE stores scanlines bottom-to-top, we have to invert the image - * from JPEG's top-to-bottom order. To do this, we save the outgoing data - * in a virtual array during put_pixel_row calls, then actually emit the - * RLE file during finish_output. - */ - - -/* - * For now, if we emit an RLE color map then it is always 256 entries long, - * though not all of the entries need be used. - */ - -#define CMAPBITS 8 -#define CMAPLENGTH (1<<(CMAPBITS)) - -typedef struct { - struct djpeg_dest_struct pub; /* public fields */ - - jvirt_sarray_ptr image; /* virtual array to store the output image */ - rle_map *colormap; /* RLE-style color map, or NULL if none */ - rle_pixel **rle_row; /* To pass rows to rle_putrow() */ - -} rle_dest_struct; - -typedef rle_dest_struct * rle_dest_ptr; - -/* Forward declarations */ -METHODDEF(void) rle_put_pixel_rows - JPP((j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied)); - - -/* - * Write the file header. - * - * In this module it's easier to wait till finish_output to write anything. - */ - -METHODDEF(void) -start_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - rle_dest_ptr dest = (rle_dest_ptr) dinfo; - size_t cmapsize; - int i, ci; -#ifdef PROGRESS_REPORT - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; -#endif - - /* - * Make sure the image can be stored in RLE format. - * - * - RLE stores image dimensions as *signed* 16 bit integers. JPEG - * uses unsigned, so we have to check the width. - * - * - Colorspace is expected to be grayscale or RGB. - * - * - The number of channels (components) is expected to be 1 (grayscale/ - * pseudocolor) or 3 (truecolor/directcolor). - * (could be 2 or 4 if using an alpha channel, but we aren't) - */ - - if (cinfo->output_width > 32767 || cinfo->output_height > 32767) - ERREXIT2(cinfo, JERR_RLE_DIMENSIONS, cinfo->output_width, - cinfo->output_height); - - if (cinfo->out_color_space != JCS_GRAYSCALE && - cinfo->out_color_space != JCS_RGB) - ERREXIT(cinfo, JERR_RLE_COLORSPACE); - - if (cinfo->output_components != 1 && cinfo->output_components != 3) - ERREXIT1(cinfo, JERR_RLE_TOOMANYCHANNELS, cinfo->num_components); - - /* Convert colormap, if any, to RLE format. */ - - dest->colormap = NULL; - - if (cinfo->quantize_colors) { - /* Allocate storage for RLE-style cmap, zero any extra entries */ - cmapsize = cinfo->out_color_components * CMAPLENGTH * SIZEOF(rle_map); - dest->colormap = (rle_map *) (*cinfo->mem->alloc_small) - ((j_common_ptr) cinfo, JPOOL_IMAGE, cmapsize); - MEMZERO(dest->colormap, cmapsize); - - /* Save away data in RLE format --- note 8-bit left shift! */ - /* Shifting would need adjustment for JSAMPLEs wider than 8 bits. */ - for (ci = 0; ci < cinfo->out_color_components; ci++) { - for (i = 0; i < cinfo->actual_number_of_colors; i++) { - dest->colormap[ci * CMAPLENGTH + i] = - GETJSAMPLE(cinfo->colormap[ci][i]) << 8; - } - } - } - - /* Set the output buffer to the first row */ - dest->pub.buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->image, (JDIMENSION) 0, (JDIMENSION) 1, TRUE); - dest->pub.buffer_height = 1; - - dest->pub.put_pixel_rows = rle_put_pixel_rows; - -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->total_extra_passes++; /* count file writing as separate pass */ - } -#endif -} - - -/* - * Write some pixel data. - * - * This routine just saves the data away in a virtual array. - */ - -METHODDEF(void) -rle_put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -{ - rle_dest_ptr dest = (rle_dest_ptr) dinfo; - - if (cinfo->output_scanline < cinfo->output_height) { - dest->pub.buffer = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->image, - cinfo->output_scanline, (JDIMENSION) 1, TRUE); - } -} - -/* - * Finish up at the end of the file. - * - * Here is where we really output the RLE file. - */ - -METHODDEF(void) -finish_output_rle (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - rle_dest_ptr dest = (rle_dest_ptr) dinfo; - rle_hdr header; /* Output file information */ - rle_pixel **rle_row, *red, *green, *blue; - JSAMPROW output_row; - char cmapcomment[80]; - int row, col; - int ci; -#ifdef PROGRESS_REPORT - cd_progress_ptr progress = (cd_progress_ptr) cinfo->progress; -#endif - - /* Initialize the header info */ - header = *rle_hdr_init(NULL); - header.rle_file = dest->pub.output_file; - header.xmin = 0; - header.xmax = cinfo->output_width - 1; - header.ymin = 0; - header.ymax = cinfo->output_height - 1; - header.alpha = 0; - header.ncolors = cinfo->output_components; - for (ci = 0; ci < cinfo->output_components; ci++) { - RLE_SET_BIT(header, ci); - } - if (cinfo->quantize_colors) { - header.ncmap = cinfo->out_color_components; - header.cmaplen = CMAPBITS; - header.cmap = dest->colormap; - /* Add a comment to the output image with the true colormap length. */ - sprintf(cmapcomment, "color_map_length=%d", cinfo->actual_number_of_colors); - rle_putcom(cmapcomment, &header); - } - - /* Emit the RLE header and color map (if any) */ - rle_put_setup(&header); - - /* Now output the RLE data from our virtual array. - * We assume here that (a) rle_pixel is represented the same as JSAMPLE, - * and (b) we are not on a machine where FAR pointers differ from regular. - */ - -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_limit = cinfo->output_height; - progress->pub.pass_counter = 0; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - - if (cinfo->output_components == 1) { - for (row = cinfo->output_height-1; row >= 0; row--) { - rle_row = (rle_pixel **) (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->image, - (JDIMENSION) row, (JDIMENSION) 1, FALSE); - rle_putrow(rle_row, (int) cinfo->output_width, &header); -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_counter++; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - } - } else { - for (row = cinfo->output_height-1; row >= 0; row--) { - rle_row = (rle_pixel **) dest->rle_row; - output_row = * (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, dest->image, - (JDIMENSION) row, (JDIMENSION) 1, FALSE); - red = rle_row[0]; - green = rle_row[1]; - blue = rle_row[2]; - for (col = cinfo->output_width; col > 0; col--) { - *red++ = GETJSAMPLE(*output_row++); - *green++ = GETJSAMPLE(*output_row++); - *blue++ = GETJSAMPLE(*output_row++); - } - rle_putrow(rle_row, (int) cinfo->output_width, &header); -#ifdef PROGRESS_REPORT - if (progress != NULL) { - progress->pub.pass_counter++; - (*progress->pub.progress_monitor) ((j_common_ptr) cinfo); - } -#endif - } - } - -#ifdef PROGRESS_REPORT - if (progress != NULL) - progress->completed_extra_passes++; -#endif - - /* Emit file trailer */ - rle_puteof(&header); - fflush(dest->pub.output_file); - if (ferror(dest->pub.output_file)) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * The module selection routine for RLE format output. - */ - -GLOBAL(djpeg_dest_ptr) -jinit_write_rle (j_decompress_ptr cinfo) -{ - rle_dest_ptr dest; - - /* Create module interface object, fill in method pointers */ - dest = (rle_dest_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(rle_dest_struct)); - dest->pub.start_output = start_output_rle; - dest->pub.finish_output = finish_output_rle; - - /* Calculate output image dimensions so we can allocate space */ - jpeg_calc_output_dimensions(cinfo); - - /* Allocate a work array for output to the RLE library. */ - dest->rle_row = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, - cinfo->output_width, (JDIMENSION) cinfo->output_components); - - /* Allocate a virtual array to hold the image. */ - dest->image = (*cinfo->mem->request_virt_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - (JDIMENSION) (cinfo->output_width * cinfo->output_components), - cinfo->output_height, (JDIMENSION) 1); - - return (djpeg_dest_ptr) dest; -} - -#endif /* RLE_SUPPORTED */ diff --git a/project/jni/jpeg/wrtarga.c b/project/jni/jpeg/wrtarga.c deleted file mode 100644 index cf104d2de..000000000 --- a/project/jni/jpeg/wrtarga.c +++ /dev/null @@ -1,253 +0,0 @@ -/* - * wrtarga.c - * - * Copyright (C) 1991-1996, Thomas G. Lane. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains routines to write output images in Targa format. - * - * These routines may need modification for non-Unix environments or - * specialized applications. As they stand, they assume output to - * an ordinary stdio stream. - * - * Based on code contributed by Lee Daniel Crocker. - */ - -#include "cdjpeg.h" /* Common decls for cjpeg/djpeg applications */ - -#ifdef TARGA_SUPPORTED - - -/* - * To support 12-bit JPEG data, we'd have to scale output down to 8 bits. - * This is not yet implemented. - */ - -#if BITS_IN_JSAMPLE != 8 - Sorry, this code only copes with 8-bit JSAMPLEs. /* deliberate syntax err */ -#endif - -/* - * The output buffer needs to be writable by fwrite(). On PCs, we must - * allocate the buffer in near data space, because we are assuming small-data - * memory model, wherein fwrite() can't reach far memory. If you need to - * process very wide images on a PC, you might have to compile in large-memory - * model, or else replace fwrite() with a putc() loop --- which will be much - * slower. - */ - - -/* Private version of data destination object */ - -typedef struct { - struct djpeg_dest_struct pub; /* public fields */ - - char *iobuffer; /* physical I/O buffer */ - JDIMENSION buffer_width; /* width of one row */ -} tga_dest_struct; - -typedef tga_dest_struct * tga_dest_ptr; - - -LOCAL(void) -write_header (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, int num_colors) -/* Create and write a Targa header */ -{ - char targaheader[18]; - - /* Set unused fields of header to 0 */ - MEMZERO(targaheader, SIZEOF(targaheader)); - - if (num_colors > 0) { - targaheader[1] = 1; /* color map type 1 */ - targaheader[5] = (char) (num_colors & 0xFF); - targaheader[6] = (char) (num_colors >> 8); - targaheader[7] = 24; /* 24 bits per cmap entry */ - } - - targaheader[12] = (char) (cinfo->output_width & 0xFF); - targaheader[13] = (char) (cinfo->output_width >> 8); - targaheader[14] = (char) (cinfo->output_height & 0xFF); - targaheader[15] = (char) (cinfo->output_height >> 8); - targaheader[17] = 0x20; /* Top-down, non-interlaced */ - - if (cinfo->out_color_space == JCS_GRAYSCALE) { - targaheader[2] = 3; /* image type = uncompressed gray-scale */ - targaheader[16] = 8; /* bits per pixel */ - } else { /* must be RGB */ - if (num_colors > 0) { - targaheader[2] = 1; /* image type = colormapped RGB */ - targaheader[16] = 8; - } else { - targaheader[2] = 2; /* image type = uncompressed RGB */ - targaheader[16] = 24; - } - } - - if (JFWRITE(dinfo->output_file, targaheader, 18) != (size_t) 18) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * Write some pixel data. - * In this module rows_supplied will always be 1. - */ - -METHODDEF(void) -put_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -/* used for unquantized full-color output */ -{ - tga_dest_ptr dest = (tga_dest_ptr) dinfo; - register JSAMPROW inptr; - register char * outptr; - register JDIMENSION col; - - inptr = dest->pub.buffer[0]; - outptr = dest->iobuffer; - for (col = cinfo->output_width; col > 0; col--) { - outptr[0] = (char) GETJSAMPLE(inptr[2]); /* RGB to BGR order */ - outptr[1] = (char) GETJSAMPLE(inptr[1]); - outptr[2] = (char) GETJSAMPLE(inptr[0]); - inptr += 3, outptr += 3; - } - (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); -} - -METHODDEF(void) -put_gray_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -/* used for grayscale OR quantized color output */ -{ - tga_dest_ptr dest = (tga_dest_ptr) dinfo; - register JSAMPROW inptr; - register char * outptr; - register JDIMENSION col; - - inptr = dest->pub.buffer[0]; - outptr = dest->iobuffer; - for (col = cinfo->output_width; col > 0; col--) { - *outptr++ = (char) GETJSAMPLE(*inptr++); - } - (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); -} - - -/* - * Write some demapped pixel data when color quantization is in effect. - * For Targa, this is only applied to grayscale data. - */ - -METHODDEF(void) -put_demapped_gray (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, - JDIMENSION rows_supplied) -{ - tga_dest_ptr dest = (tga_dest_ptr) dinfo; - register JSAMPROW inptr; - register char * outptr; - register JSAMPROW color_map0 = cinfo->colormap[0]; - register JDIMENSION col; - - inptr = dest->pub.buffer[0]; - outptr = dest->iobuffer; - for (col = cinfo->output_width; col > 0; col--) { - *outptr++ = (char) GETJSAMPLE(color_map0[GETJSAMPLE(*inptr++)]); - } - (void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width); -} - - -/* - * Startup: write the file header. - */ - -METHODDEF(void) -start_output_tga (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - tga_dest_ptr dest = (tga_dest_ptr) dinfo; - int num_colors, i; - FILE *outfile; - - if (cinfo->out_color_space == JCS_GRAYSCALE) { - /* Targa doesn't have a mapped grayscale format, so we will */ - /* demap quantized gray output. Never emit a colormap. */ - write_header(cinfo, dinfo, 0); - if (cinfo->quantize_colors) - dest->pub.put_pixel_rows = put_demapped_gray; - else - dest->pub.put_pixel_rows = put_gray_rows; - } else if (cinfo->out_color_space == JCS_RGB) { - if (cinfo->quantize_colors) { - /* We only support 8-bit colormap indexes, so only 256 colors */ - num_colors = cinfo->actual_number_of_colors; - if (num_colors > 256) - ERREXIT1(cinfo, JERR_TOO_MANY_COLORS, num_colors); - write_header(cinfo, dinfo, num_colors); - /* Write the colormap. Note Targa uses BGR byte order */ - outfile = dest->pub.output_file; - for (i = 0; i < num_colors; i++) { - putc(GETJSAMPLE(cinfo->colormap[2][i]), outfile); - putc(GETJSAMPLE(cinfo->colormap[1][i]), outfile); - putc(GETJSAMPLE(cinfo->colormap[0][i]), outfile); - } - dest->pub.put_pixel_rows = put_gray_rows; - } else { - write_header(cinfo, dinfo, 0); - dest->pub.put_pixel_rows = put_pixel_rows; - } - } else { - ERREXIT(cinfo, JERR_TGA_COLORSPACE); - } -} - - -/* - * Finish up at the end of the file. - */ - -METHODDEF(void) -finish_output_tga (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo) -{ - /* Make sure we wrote the output file OK */ - fflush(dinfo->output_file); - if (ferror(dinfo->output_file)) - ERREXIT(cinfo, JERR_FILE_WRITE); -} - - -/* - * The module selection routine for Targa format output. - */ - -GLOBAL(djpeg_dest_ptr) -jinit_write_targa (j_decompress_ptr cinfo) -{ - tga_dest_ptr dest; - - /* Create module interface object, fill in method pointers */ - dest = (tga_dest_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(tga_dest_struct)); - dest->pub.start_output = start_output_tga; - dest->pub.finish_output = finish_output_tga; - - /* Calculate output image dimensions so we can allocate space */ - jpeg_calc_output_dimensions(cinfo); - - /* Create I/O buffer. Note we make this near on a PC. */ - dest->buffer_width = cinfo->output_width * cinfo->output_components; - dest->iobuffer = (char *) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (size_t) (dest->buffer_width * SIZEOF(char))); - - /* Create decompressor output buffer. */ - dest->pub.buffer = (*cinfo->mem->alloc_sarray) - ((j_common_ptr) cinfo, JPOOL_IMAGE, dest->buffer_width, (JDIMENSION) 1); - dest->pub.buffer_height = 1; - - return (djpeg_dest_ptr) dest; -} - -#endif /* TARGA_SUPPORTED */ diff --git a/project/jni/png/ANNOUNCE b/project/jni/png/ANNOUNCE deleted file mode 100644 index 0f66c0d1d..000000000 --- a/project/jni/png/ANNOUNCE +++ /dev/null @@ -1,35 +0,0 @@ -Libpng 1.6.34 - September 29, 2017 - -This is a public release of libpng, intended for use in production codes. - -Files available for download: - -Source files with LF line endings (for Unix/Linux) and with a -"configure" script - - libpng-1.6.34.tar.xz (LZMA-compressed, recommended) - libpng-1.6.34.tar.gz - -Source files with CRLF line endings (for Windows), without the -"configure" script - - lpng1634.7z (LZMA-compressed, recommended) - lpng1634.zip - -Other information: - - libpng-1.6.34-README.txt - libpng-1.6.34-LICENSE.txt - libpng-1.6.34-*.asc (armored detached GPG signatures) - -Changes since the last public release (1.6.33): - Removed contrib/pngsuite/i*.png; some of these were incorrect and caused - test failures. - -Send comments/corrections/commendations to png-mng-implement at lists.sf.net -(subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe) -or to glennrp at users.sourceforge.net - -Glenn R-P diff --git a/project/jni/png/Android.mk b/project/jni/png/Android.mk deleted file mode 100644 index 711cefdfe..000000000 --- a/project/jni/png/Android.mk +++ /dev/null @@ -1,13 +0,0 @@ -LOCAL_PATH := $(call my-dir) - -include $(CLEAR_VARS) - -LOCAL_SRC_FILES := $(notdir $(wildcard $(LOCAL_PATH)/*.c)) - -LOCAL_CFLAGS := -DPNG_ARM_NEON_OPT=0 -LOCAL_C_INCLUDES := $(LOCAL_PATH)/include -# LOCAL_LDLIBS := z - -LOCAL_MODULE := png - -include $(BUILD_STATIC_LIBRARY) diff --git a/project/jni/png/CHANGES b/project/jni/png/CHANGES deleted file mode 100644 index 4b8211891..000000000 --- a/project/jni/png/CHANGES +++ /dev/null @@ -1,6051 +0,0 @@ -#if 0 -CHANGES - changes for libpng - -version 0.1 [March 29, 1995] - initial work-in-progress release - -version 0.2 [April 1, 1995] - added reader into png.h - fixed small problems in stub file - -version 0.3 [April 8, 1995] - added pull reader - split up pngwrite.c to several files - added pnglib.txt - added example.c - cleaned up writer, adding a few new transformations - fixed some bugs in writer - interfaced with zlib 0.5 - added K&R support - added check for 64 KB blocks for 16 bit machines - -version 0.4 [April 26, 1995] - cleaned up code and commented code - simplified time handling into png_time - created png_color_16 and png_color_8 to handle color needs - cleaned up color type defines - fixed various bugs - made various names more consistent - interfaced with zlib 0.71 - cleaned up zTXt reader and writer (using zlib's Reset functions) - split transformations into pngrtran.c and pngwtran.c - -version 0.5 [April 30, 1995] - interfaced with zlib 0.8 - fixed many reading and writing bugs - saved using 3 spaces instead of tabs - -version 0.6 [May 1, 1995] - first beta release - added png_large_malloc() and png_large_free() - added png_size_t - cleaned up some compiler warnings - added png_start_read_image() - -version 0.7 [June 24, 1995] - cleaned up lots of bugs - finished dithering and other stuff - added test program - changed name from pnglib to libpng - -version 0.71 [June 26, 1995] - changed pngtest.png for zlib 0.93 - fixed error in libpng.txt and example.c - -version 0.8 [August 20, 1995] - cleaned up some bugs - added png_set_filler() - split up pngstub.c into pngmem.c, pngio.c, and pngerror.c - added #define's to remove unwanted code - moved png_info_init() to png.c - added old_size into png_realloc() - added functions to manually set filtering and compression info - changed compression parameters based on image type - optimized filter selection code - added version info - changed external functions passing floats to doubles (k&r problems?) - put all the configurable stuff in pngconf.h - enabled png_set_shift to work with paletted images on read - added png_read_update_info() - updates info structure with transformations - -Version 0.81 [August, 1995] - incorporated Tim Wegner's medium model code (thanks, Tim) - -Version 0.82 [September, 1995] - [unspecified changes] - -Version 0.85 [December, 1995] - added more medium model code (almost everything's a far) - added i/o, error, and memory callback functions - fixed some bugs (16-bit, 4-bit interlaced, etc.) - added first run progressive reader (barely tested) - -Version 0.86 [January, 1996] - fixed bugs - improved documentation - -Version 0.87 [January, 1996] - fixed medium model bugs - fixed other bugs introduced in 0.85 and 0.86 - added some minor documentation - -Version 0.88 [January, 1996] - fixed progressive bugs - replaced tabs with spaces - cleaned up documentation - added callbacks for read/write and warning/error functions - -Version 0.89 [June 5, 1996] - Added new initialization API to make libpng work better with shared libs - we now have png_create_read_struct(), png_create_write_struct(), - png_create_info_struct(), png_destroy_read_struct(), and - png_destroy_write_struct() instead of the separate calls to - malloc and png_read_init(), png_info_init(), and png_write_init() - Changed warning/error callback functions to fix bug - this means you - should use the new initialization API if you were using the old - png_set_message_fn() calls, and that the old API no longer exists - so that people are aware that they need to change their code - Changed filter selection API to allow selection of multiple filters - since it didn't work in previous versions of libpng anyways - Optimized filter selection code - Fixed png_set_background() to allow using an arbitrary RGB color for - paletted images - Fixed gamma and background correction for paletted images, so - png_correct_palette is not needed unless you are correcting an - external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED - in pngconf.h) - if nobody uses this, it may disappear in the future. - Fixed bug with Borland 64K memory allocation (Alexander Lehmann) - Fixed bug in interlace handling (Smarasderagd, I think) - Added more error checking for writing and image to reduce invalid files - Separated read and write functions so that they won't both be linked - into a binary when only reading or writing functionality is used - New pngtest image also has interlacing and zTXt - Updated documentation to reflect new API - -Version 0.89c [June 17, 1996] - Bug fixes. - -Version 0.90 [January, 1997] - Made CRC errors/warnings on critical and ancillary chunks configurable - libpng will use the zlib CRC routines by (compile-time) default - Changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner) - Added external C++ wrapper statements to png.h (Gilles Dauphin) - Allow PNG file to be read when some or all of file signature has already - been read from the beginning of the stream. ****This affects the size - of info_struct and invalidates all programs that use a shared libpng**** - Fixed png_filler() declarations - Fixed? background color conversions - Fixed order of error function pointers to match documentation - Current chunk name is now available in png_struct to reduce the number - of nearly identical error messages (will simplify multi-lingual - support when available) - Try to get ready for unknown-chunk callback functions: - - previously read critical chunks are flagged, so the chunk handling - routines can determine if the chunk is in the right place - - all chunk handling routines have the same prototypes, so we will - be able to handle all chunks via a callback mechanism - Try to fix Linux "setjmp" buffer size problems - Removed png_large_malloc, png_large_free, and png_realloc functions. - -Version 0.95 [March, 1997] - Fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never - Fixed bug in PNG file signature compares when start != 0 - Changed parameter type of png_set_filler(...filler...) from png_byte - to png_uint_32 - Added test for MACOS to ensure that both math.h and fp.h are not #included - Added macros for libpng to be compiled as a Windows DLL (Andreas Kupries) - Added "packswap" transformation, which changes the endianness of - packed-pixel bytes (Kevin Bracey) - Added "strip_alpha" transformation, which removes the alpha channel of - input images without using it (not necessarily a good idea) - Added "swap_alpha" transformation, which puts the alpha channel in front - of the color bytes instead of after - Removed all implicit variable tests which assume NULL == 0 (I think) - Changed several variables to "png_size_t" to show 16/32-bit limitations - Added new pCAL chunk read/write support - Added experimental filter selection weighting (Greg Roelofs) - Removed old png_set_rgbx() and png_set_xrgb() functions that have been - obsolete for about 2 years now (use png_set_filler() instead) - Added macros to read 16- and 32-bit ints directly from buffer, to be - used only on those systems that support it (namely PowerPC and 680x0) - With some testing, this may become the default for MACOS/PPC systems. - Only calculate CRC on data if we are going to use it - Added macros for zTXt compression type PNG_zTXt_COMPRESSION_??? - Added macros for simple libpng debugging output selectable at compile time - Removed PNG_READ_END_MODE in progressive reader (Smarasderagd) - More description of info_struct in libpng.txt and png.h - More instructions in example.c - More chunk types tested in pngtest.c - Renamed pngrcb.c to pngset.c, and all png_read_ functions to be - png_set_. We now have corresponding png_get_ - functions in pngget.c to get information in info_ptr. This isolates - the application from the internal organization of png_info_struct - (good for shared library implementations). - -Version 0.96 [May, 1997] - Fixed serious bug with < 8bpp images introduced in 0.95 - Fixed 256-color transparency bug (Greg Roelofs) - Fixed up documentation (Greg Roelofs, Laszlo Nyul) - Fixed "error" in pngconf.h for Linux setjmp() behavior - Fixed DOS medium model support (Tim Wegner) - Fixed png_check_keyword() for case with error in static string text - Added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul) - Added typecasts to quiet compiler errors - Added more debugging info - -Version 0.97 [January, 1998] - Removed PNG_USE_OWN_CRC capability - Relocated png_set_crc_action from pngrutil.c to pngrtran.c - Fixed typecasts of "new_key", etc. (Andreas Dilger) - Added RFC 1152 [sic] date support - Fixed bug in gamma handling of 4-bit grayscale - Added 2-bit grayscale gamma handling (Glenn R-P) - Added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P) - Minor corrections in libpng.txt - Added simple sRGB support (Glenn R-P) - Easier conditional compiling, e.g., - define PNG_READ/WRITE_NOT_FULLY_SUPPORTED; - all configurable options can be selected from command-line instead - of having to edit pngconf.h (Glenn R-P) - Fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P) - Added more conditions for png_do_background, to avoid changing - black pixels to background when a background is supplied and - no pixels are transparent - Repaired PNG_NO_STDIO behavior - Tested NODIV support and made it default behavior (Greg Roelofs) - Added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler) - Regularized version numbering scheme and bumped shared-library major - version number to 2 to avoid problems with libpng 0.89 apps - (Greg Roelofs) - -Version 0.98 [January, 1998] - Cleaned up some typos in libpng.txt and in code documentation - Fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler) - Cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c - Changed recommendation about file_gamma for PC images to .51 from .45, - in example.c and libpng.txt, added comments to distinguish between - screen_gamma, viewing_gamma, and display_gamma. - Changed all references to RFC1152 to read RFC1123 and changed the - PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED - Added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent) - Changed srgb_intent from png_byte to int to avoid compiler bugs - -Version 0.99 [January 30, 1998] - Free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler) - Fixed a longstanding "packswap" bug in pngtrans.c - Fixed some inconsistencies in pngconf.h that prevented compiling with - PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined - Fixed some typos and made other minor rearrangement of libpng.txt (Andreas) - Changed recommendation about file_gamma for PC images to .50 from .51 in - example.c and libpng.txt, and changed file_gamma for sRGB images to .45 - Added a number of functions to access information from the png structure - png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit) - Added TARGET_MACOS similar to zlib-1.0.8 - Define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined - Added type casting to all png_malloc() function calls - -Version 0.99a [January 31, 1998] - Added type casts and parentheses to all returns that return a value.(Tim W.) - -Version 0.99b [February 4, 1998] - Added type cast png_uint_32 on malloc function calls where needed. - Changed type of num_hist from png_uint_32 to int (same as num_palette). - Added checks for rowbytes overflow, in case png_size_t is less than 32 bits. - Renamed makefile.elf to makefile.lnx. - -Version 0.99c [February 7, 1998] - More type casting. Removed erroneous overflow test in pngmem.c. - Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes. - Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5. - -Version 0.99d [February 11, 1998] - Renamed "far_to_near()" "png_far_to_near()" - Revised libpng.3 - Version 99c "buffered" operations didn't work as intended. Replaced them - with png_memcpy_check() and png_memset_check(). - Added many "if (png_ptr == NULL) return" to quell compiler warnings about - unused png_ptr, mostly in pngget.c and pngset.c. - Check for overlength tRNS chunk present when indexed-color PLTE is read. - Cleaned up spelling errors in libpng.3/libpng.txt - Corrected a problem with png_get_tRNS() which returned undefined trans array - -Version 0.99e [February 28, 1998] - Corrected png_get_tRNS() again. - Add parentheses for easier reading of pngget.c, fixed "||" should be "&&". - Touched up example.c to make more of it compileable, although the entire - file still can't be compiled (Willem van Schaik) - Fixed a bug in png_do_shift() (Bryan Tsai) - Added a space in png.h prototype for png_write_chunk_start() - Replaced pngtest.png with one created with zlib 1.1.1 - Changed pngtest to report PASS even when file size is different (Jean-loup G.) - Corrected some logic errors in png_do_invert_alpha() (Chris Patterson) - -Version 0.99f [March 5, 1998] - Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey) - Moved makefiles into a "scripts" directory, and added INSTALL instruction file - Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok) - Added pointers to "note on libpng versions" in makefile.lnx and README - Added row callback feature when reading and writing nonprogressive rows - and added a test of this feature in pngtest.c - Added user transform callbacks, with test of the feature in pngtest.c - -Version 0.99g [March 6, 1998, morning] - Minor changes to pngtest.c to suppress compiler warnings. - Removed "beta" language from documentation. - -Version 0.99h [March 6, 1998, evening] - Minor changes to previous minor changes to pngtest.c - Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED - and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro - Added user transform capability - -Version 1.00 [March 7, 1998] - Changed several typedefs in pngrutil.c - Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik) - Replaced "while(1)" with "for(;;)" - Added PNGARG() to prototypes in pngtest.c and removed some prototypes - Updated some of the makefiles (Tom Lane) - Changed some typedefs (s_start, etc.) in pngrutil.c - Fixed dimensions of "short_months" array in pngwrite.c - Replaced ansi2knr.c with the one from jpeg-v6 - -Version 1.0.0 [March 8, 1998] - Changed name from 1.00 to 1.0.0 (Adam Costello) - Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert) - -Version 1.0.0a [March 9, 1998] - Fixed three bugs in pngrtran.c to make gamma+background handling consistent - (Greg Roelofs) - Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz - for major, minor, and bugfix releases. This is 10001. (Adam Costello, - Tom Lane) - Make months range from 1-12 in png_convert_to_rfc1123 - -Version 1.0.0b [March 13, 1998] - Quieted compiler complaints about two empty "for" loops in pngrutil.c - Minor changes to makefile.s2x - Removed #ifdef/#endif around a png_free() in pngread.c - -Version 1.0.1 [March 14, 1998] - Changed makefile.s2x to reduce security risk of using a relative pathname - Fixed some typos in the documentation (Greg). - Fixed a problem with value of "channels" returned by png_read_update_info() - -Version 1.0.1a [April 21, 1998] - Optimized Paeth calculations by replacing abs() function calls with intrinsics - plus other loop optimizations. Improves avg decoding speed by about 20%. - Commented out i386istic "align" compiler flags in makefile.lnx. - Reduced the default warning level in some makefiles, to make them consistent. - Removed references to IJG and JPEG in the ansi2knr.c copyright statement. - Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation. - Added grayscale and 16-bit capability to png_do_read_filler(). - Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes - too large when writing an image with bit_depth < 8 (Bob Dellaca). - Corrected some bugs in the experimental weighted filtering heuristics. - Moved a misplaced pngrutil code block that truncates tRNS if it has more - than num_palette entries -- test was done before num_palette was defined. - Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins). - Changed compiler flags in makefile.wat for better optimization - (Pawel Mrochen). - -Version 1.0.1b [May 2, 1998] - Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg). - Relocated the png_composite macros from pngrtran.c to png.h (Greg). - Added makefile.sco (contributed by Mike Hopkirk). - Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a. - Fixed a bug in pngrtran.c that would set channels=5 under some circumstances. - More work on the Paeth-filtering, achieving imperceptible speedup - (A Kleinert). - More work on loop optimization which may help when compiled with C++ - compilers. - Added warnings when people try to use transforms they've defined out. - Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran. - Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg) - -Version 1.0.1c [May 11, 1998] - Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for - filler bytes should have been 0xff instead of 0xf. - Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images. - Moved PNG_WRITE_WEIGHTED_FILTER_SUPPORTED and PNG_WRITE_FLUSH_SUPPORTED - out of the PNG_WRITE_TRANSFORMS_NOT_SUPPORTED block of pngconf.h - Added "PNG_NO_WRITE_TRANSFORMS" etc., as alternatives for *_NOT_SUPPORTED, - for consistency, in pngconf.h - Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier - to remove unwanted capabilities via the compile line - Made some corrections to grammar (which, it's) in documentation (Greg). - Corrected example.c, use of row_pointers in png_write_image(). - -Version 1.0.1d [May 24, 1998] - Corrected several statements that used side effects illegally in pngrutil.c - and pngtrans.c, that were introduced in version 1.0.1b - Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert) - More corrections to example.c, use of row_pointers in png_write_image() - and png_read_rows(). - Added pngdll.mak and pngdef.pas to scripts directory, contributed by - Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5 - Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.) - Changed several loops from count-down to count-up, for consistency. - -Version 1.0.1e [June 6, 1998] - Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and - added warnings when people try to set png_read_fn and png_write_fn in - the same structure. - Added a test such that png_do_gamma will be done when num_trans==0 - for truecolor images that have defined a background. This corrects an - error that was introduced in libpng-0.90 that can cause gamma processing - to be skipped. - Added tests in png.h to include "trans" and "trans_values" in structures - when PNG_READ_BACKGROUND_SUPPORTED or PNG_READ_EXPAND_SUPPORTED is defined. - Add png_free(png_ptr->time_buffer) in png_destroy_read_struct() - Moved png_convert_to_rfc_1123() from pngwrite.c to png.c - Added capability for user-provided malloc_fn() and free_fn() functions, - and revised pngtest.c to demonstrate their use, replacing the - PNGTEST_DEBUG_MEM feature. - Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner). - -Version 1.0.2 [June 14, 1998] - Fixed two bugs in makefile.bor . - -Version 1.0.2a [December 30, 1998] - Replaced and extended code that was removed from png_set_filler() in 1.0.1a. - Fixed a bug in png_do_filler() that made it fail to write filler bytes in - the left-most pixel of each row (Kevin Bracey). - Changed "static pngcharp tIME_string" to "static char tIME_string[30]" - in pngtest.c (Duncan Simpson). - Fixed a bug in pngtest.c that caused pngtest to try to write a tIME chunk - even when no tIME chunk was present in the source file. - Fixed a problem in pngrutil.c: gray_to_rgb didn't always work with 16-bit. - Fixed a problem in png_read_push_finish_row(), which would not skip some - passes that it should skip, for images that are less than 3 pixels high. - Interchanged the order of calls to png_do_swap() and png_do_shift() - in pngwtran.c (John Cromer). - Added #ifdef PNG_DEBUG/#endif surrounding use of PNG_DEBUG in png.h . - Changed "bad adaptive filter type" from error to warning in pngrutil.c . - Fixed a documentation error about default filtering with 8-bit indexed-color. - Separated the PNG_NO_STDIO macro into PNG_NO_STDIO and PNG_NO_CONSOLE_IO - (L. Peter Deutsch). - Added png_set_rgb_to_gray() and png_get_rgb_to_gray_status() functions. - Added png_get_copyright() and png_get_header_version() functions. - Revised comments on png_set_progressive_read_fn() in libpng.txt and example.c - Added information about debugging in libpng.txt and libpng.3 . - Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and - makefile.sco. - Removed lines after Dynamic Dependencies" in makefile.aco . - Revised makefile.dec to make a shared library (Jeremie Petit). - Removed trailing blanks from all files. - -Version 1.0.2a [January 6, 1999] - Removed misplaced #endif and #ifdef PNG_NO_EXTERN near the end of png.h - Added "if" tests to silence complaints about unused png_ptr in png.h and png.c - Changed "check_if_png" function in example.c to return true (nonzero) if PNG. - Changed libpng.txt to demonstrate png_sig_cmp() instead of png_check_sig() - which is obsolete. - -Version 1.0.3 [January 14, 1999] - Added makefile.hux, for Hewlett Packard HPUX 10.20 and 11.00 (Jim Rice) - Added a statement of Y2K compliance in png.h, libpng.3, and Y2KINFO. - -Version 1.0.3a [August 12, 1999] - Added check for PNG_READ_INTERLACE_SUPPORTED in pngread.c; issue a warning - if an attempt is made to read an interlaced image when it's not supported. - Added check if png_ptr->trans is defined before freeing it in pngread.c - Modified the Y2K statement to include versions back to version 0.71 - Fixed a bug in the check for valid IHDR bit_depth/color_types in pngrutil.c - Modified makefile.wat (added -zp8 flag, ".symbolic", changed some comments) - Replaced leading blanks with tab characters in makefile.hux - Changed "dworkin.wustl.edu" to "ccrc.wustl.edu" in various documents. - Changed (float)red and (float)green to (double)red, (double)green - in png_set_rgb_to_gray() to avoid "promotion" problems in AIX. - Fixed a bug in pngconf.h that omitted when PNG_DEBUG==0 (K Bracey). - Reformatted libpng.3 and libpngpf.3 with proper fonts (script by J. vanZandt). - Updated documentation to refer to the PNG-1.2 specification. - Removed ansi2knr.c and left pointers to the latest source for ansi2knr.c - in makefile.knr, INSTALL, and README (L. Peter Deutsch) - Fixed bugs in calculation of the length of rowbytes when adding alpha - channels to 16-bit images, in pngrtran.c (Chris Nokleberg) - Added function png_set_user_transform_info() to store user_transform_ptr, - user_depth, and user_channels into the png_struct, and a function - png_get_user_transform_ptr() to retrieve the pointer (Chris Nokleberg) - Added function png_set_empty_plte_permitted() to make libpng useable - in MNG applications. - Corrected the typedef for png_free_ptr in png.h (Jesse Jones). - Correct gamma with srgb is 45455 instead of 45000 in pngrutil.c, to be - consistent with PNG-1.2, and allow variance of 500 before complaining. - Added assembler code contributed by Intel in file pngvcrd.c and modified - makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation, - Gilles Vollant) - Changed "ln -s -f" to "ln -f -s" in the makefiles to make Solaris happy. - Added some aliases for png_set_expand() in pngrtran.c, namely - png_set_expand_PLTE(), png_set_expand_depth(), and png_set_expand_tRNS() - (Greg Roelofs, in "PNG: The Definitive Guide"). - Added makefile.beo for BEOS on X86, contributed by Sander Stok. - -Version 1.0.3b [August 26, 1999] - Replaced 2147483647L several places with PNG_MAX_UINT macro, defined in png.h - Changed leading blanks to tabs in all makefiles. - Define PNG_USE_PNGVCRD in makefile.w32, to get MMX assembler code. - Made alternate versions of png_set_expand() in pngrtran.c, namely - png_set_gray_1_2_4_to_8, png_set_palette_to_rgb, and png_set_tRNS_to_alpha - (Greg Roelofs, in "PNG: The Definitive Guide"). Deleted the 1.0.3a aliases. - Relocated start of 'extern "C"' block in png.h so it doesn't include pngconf.h - Revised calculation of num_blocks in pngmem.c to avoid a potentially - negative shift distance, whose results are undefined in the C language. - Added a check in pngset.c to prevent writing multiple tIME chunks. - Added a check in pngwrite.c to detect invalid small window_bits sizes. - -Version 1.0.3d [September 4, 1999] - Fixed type casting of igamma in pngrutil.c - Added new png_expand functions to scripts/pngdef.pas and pngos2.def - Added a demo read_user_transform_fn that examines the row filters in pngtest.c - -Version 1.0.4 [September 24, 1999, not distributed publicly] - Define PNG_ALWAYS_EXTERN in pngconf.h if __STDC__ is defined - Delete #define PNG_INTERNAL and include "png.h" from pngasmrd.h - Made several minor corrections to pngtest.c - Renamed the makefiles with longer but more user friendly extensions. - Copied the PNG copyright and license to a separate LICENSE file. - Revised documentation, png.h, and example.c to remove reference to - "viewing_gamma" which no longer appears in the PNG specification. - Revised pngvcrd.c to use MMX code for interlacing only on the final pass. - Updated pngvcrd.c to use the faster C filter algorithms from libpng-1.0.1a - Split makefile.win32vc into two versions, makefile.vcawin32 (uses MMX - assembler code) and makefile.vcwin32 (doesn't). - Added a CPU timing report to pngtest.c (enabled by defining PNGTEST_TIMING) - Added a copy of pngnow.png to the distribution. - -Version 1.0.4a [September 25, 1999] - Increase max_pixel_depth in pngrutil.c if a user transform needs it. - Changed several division operations to right-shifts in pngvcrd.c - -Version 1.0.4b [September 30, 1999] - Added parentheses in line 3732 of pngvcrd.c - Added a comment in makefile.linux warning about buggy -O3 in pgcc 2.95.1 - -Version 1.0.4c [October 1, 1999] - Added a "png_check_version" function in png.c and pngtest.c that will generate - a helpful compiler error if an old png.h is found in the search path. - Changed type of png_user_transform_depth|channels from int to png_byte. - Added "Libpng is OSI Certified Open Source Software" statement to png.h - -Version 1.0.4d [October 6, 1999] - Changed 0.45 to 0.45455 in png_set_sRGB() - Removed unused PLTE entries from pngnow.png - Re-enabled some parts of pngvcrd.c (png_combine_row) that work properly. - -Version 1.0.4e [October 10, 1999] - Fixed sign error in pngvcrd.c (Greg Roelofs) - Replaced some instances of memcpy with simple assignments in pngvcrd (GR-P) - -Version 1.0.4f [October 15, 1999] - Surrounded example.c code with #if 0 .. #endif to prevent people from - inadvertently trying to compile it. - Changed png_get_header_version() from a function to a macro in png.h - Added type casting mostly in pngrtran.c and pngwtran.c - Removed some pointless "ptr = NULL" in pngmem.c - Added a "contrib" directory containing the source code from Greg's book. - -Version 1.0.5 [October 15, 1999] - Minor editing of the INSTALL and README files. - -Version 1.0.5a [October 23, 1999] - Added contrib/pngsuite and contrib/pngminus (Willem van Schaik) - Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans) - Further optimization and bugfix of pngvcrd.c - Revised pngset.c so that it does not allocate or free memory in the user's - text_ptr structure. Instead, it makes its own copy. - Created separate write_end_info_struct in pngtest.c for a more severe test. - Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak. - -Version 1.0.5b [November 23, 1999] - Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and - PNG_FLAG_WROTE_tIME from flags to mode. - Added png_write_info_before_PLTE() function. - Fixed some typecasting in contrib/gregbook/*.c - Updated scripts/makevms.com and added makevms.com to contrib/gregbook - and contrib/pngminus (Martin Zinser) - -Version 1.0.5c [November 26, 1999] - Moved png_get_header_version from png.h to png.c, to accommodate ansi2knr. - Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to - accommodate making DLL's: Moved usr_png_ver from global variable to function - png_get_header_ver() in png.c. Moved png_sig to png_sig_bytes in png.c and - eliminated use of png_sig in pngwutil.c. Moved the various png_CHNK arrays - into pngtypes.h. Eliminated use of global png_pass arrays. Declared the - png_CHNK and png_pass arrays to be "const". Made the global arrays - available to applications (although none are used in libpng itself) when - PNG_NO_GLOBAL_ARRAYS is not defined or when PNG_GLOBAL_ARRAYS is defined. - Removed some extraneous "-I" from contrib/pngminus/makefile.std - Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2. - Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3 - -Version 1.0.5d [November 29, 1999] - Add type cast (png_const_charp) two places in png.c - Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays. - Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available - to applications a macro "PNG_USE_LOCAL_ARRAYS". - comment out (with #ifdef) all the new declarations when - PNG_USE_GLOBAL_ARRAYS is defined. - Added PNG_EXPORT_VAR macro to accommodate making DLL's. - -Version 1.0.5e [November 30, 1999] - Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text - structure; refactored the inflate/deflate support to make adding new chunks - with trailing compressed parts easier in the future, and added new functions - png_free_iCCP, png_free_pCAL, png_free_sPLT, png_free_text, png_get_iCCP, - png_get_spalettes, png_set_iCCP, png_set_spalettes (Eric S. Raymond). - NOTE: Applications that write text chunks MUST define png_text->lang - before calling png_set_text(). It must be set to NULL if you want to - write tEXt or zTXt chunks. If you want your application to be able to - run with older versions of libpng, use - - #ifdef PNG_iTXt_SUPPORTED - png_text[i].lang = NULL; - #endif - - Changed png_get_oFFs() and png_set_oFFs() to use signed rather than unsigned - offsets (Eric S. Raymond). - Combined PNG_READ_cHNK_SUPPORTED and PNG_WRITE_cHNK_SUPPORTED macros into - PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED - macros, leaving the separate macros also available. - Removed comments on #endifs at the end of many short, non-nested #if-blocks. - -Version 1.0.5f [December 6, 1999] - Changed makefile.solaris to issue a warning about potential problems when - the ucb "ld" is in the path ahead of the ccs "ld". - Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3. - Added sCAL chunk support (Eric S. Raymond). - -Version 1.0.5g [December 7, 1999] - Fixed "png_free_spallettes" typo in png.h - Added code to handle new chunks in pngpread.c - Moved PNG_CHNK string macro definitions outside of PNG_NO_EXTERN block - Added "translated_key" to png_text structure and png_write_iTXt(). - Added code in pngwrite.c to work around a newly discovered zlib bug. - -Version 1.0.5h [December 10, 1999] - NOTE: regarding the note for version 1.0.5e, the following must also - be included in your code: - png_text[i].translated_key = NULL; - Unknown chunk handling is now supported. - Option to eliminate all floating point support was added. Some new - fixed-point functions such as png_set_gAMA_fixed() were added. - Expanded tabs and removed trailing blanks in source files. - -Version 1.0.5i [December 13, 1999] - Added some type casts to silence compiler warnings. - Renamed "png_free_spalette" to "png_free_spalettes" for consistency. - Removed leading blanks from a #define in pngvcrd.c - Added some parameters to the new png_set_keep_unknown_chunks() function. - Added a test for up->location != 0 in the first instance of writing - unknown chunks in pngwrite.c - Changed "num" to "i" in png_free_spalettes() and png_free_unknowns() to - prevent recursion. - Added png_free_hIST() function. - Various patches to fix bugs in the sCAL and integer cHRM processing, - and to add some convenience macros for use with sCAL. - -Version 1.0.5j [December 21, 1999] - Changed "unit" parameter of png_write_sCAL from png_byte to int, to work - around buggy compilers. - Added new type "png_fixed_point" for integers that hold float*100000 values - Restored backward compatibility of tEXt/zTXt chunk processing: - Restored the first four members of png_text to the same order as v.1.0.5d. - Added members "lang_key" and "itxt_length" to png_text struct. Set - text_length=0 when "text" contains iTXt data. Use the "compression" - member to distinguish among tEXt/zTXt/iTXt types. Added - PNG_ITXT_COMPRESSION_NONE (1) and PNG_ITXT_COMPRESSION_zTXt(2) macros. - The "Note" above, about backward incompatibility of libpng-1.0.5e, no - longer applies. - Fixed png_read|write_iTXt() to read|write parameters in the right order, - and to write the iTXt chunk after IDAT if it appears in the end_ptr. - Added pnggccrd.c, version of pngvcrd.c Intel assembler for gcc (Greg Roelofs) - Reversed the order of trying to write floating-point and fixed-point gAMA. - -Version 1.0.5k [December 27, 1999] - Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))" - Added png_handle_as_unknown() function (Glenn) - Added png_free_chunk_list() function and chunk_list and num_chunk_list members - of png_ptr. - Eliminated erroneous warnings about multiple sPLT chunks and sPLT-after-PLTE. - Fixed a libpng-1.0.5h bug in pngrutil.c that was issuing erroneous warnings - about ignoring incorrect gAMA with sRGB (gAMA was in fact not ignored) - Added png_free_tRNS(); png_set_tRNS() now malloc's its own trans array (ESR). - Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is. - Changed type of proflen from png_int_32 to png_uint_32 in png_get_iCCP(). - -Version 1.0.5l [January 1, 2000] - Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr() - for setting a callback function to handle unknown chunks and for - retrieving the associated user pointer (Glenn). - -Version 1.0.5m [January 7, 2000] - Added high-level functions png_read_png(), png_write_png(), png_free_pixels(). - -Version 1.0.5n [January 9, 2000] - Added png_free_PLTE() function, and modified png_set_PLTE() to malloc its - own memory for info_ptr->palette. This makes it safe for the calling - application to free its copy of the palette any time after it calls - png_set_PLTE(). - -Version 1.0.5o [January 20, 2000] - Cosmetic changes only (removed some trailing blanks and TABs) - -Version 1.0.5p [January 31, 2000] - Renamed pngdll.mak to makefile.bd32 - Cosmetic changes in pngtest.c - -Version 1.0.5q [February 5, 2000] - Relocated the makefile.solaris warning about PATH problems. - Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg) - Revised makefile.gcmmx - Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() macros - -Version 1.0.5r [February 7, 2000] - Removed superfluous prototype for png_get_itxt from png.h - Fixed a bug in pngrtran.c that improperly expanded the background color. - Return *num_text=0 from png_get_text() when appropriate, and fix documentation - of png_get_text() in libpng.txt/libpng.3. - -Version 1.0.5s [February 18, 2000] - Added "png_jmp_env()" macro to pngconf.h, to help people migrate to the - new error handler that's planned for the next libpng release, and changed - example.c, pngtest.c, and contrib programs to use this macro. - Revised some of the DLL-export macros in pngconf.h (Greg Roelofs) - Fixed a bug in png_read_png() that caused it to fail to expand some images - that it should have expanded. - Fixed some mistakes in the unused and undocumented INCH_CONVERSIONS functions - in pngget.c - Changed the allocation of palette, history, and trans arrays back to - the version 1.0.5 method (linking instead of copying) which restores - backward compatibility with version 1.0.5. Added some remarks about - that in example.c. Added "free_me" member to info_ptr and png_ptr - and added png_free_data() function. - Updated makefile.linux and makefile.gccmmx to make directories conditionally. - Made cosmetic changes to pngasmrd.h - Added png_set_rows() and png_get_rows(), for use with png_read|write_png(). - Modified png_read_png() to allocate info_ptr->row_pointers only if it - hasn't already been allocated. - -Version 1.0.5t [March 4, 2000] - Changed png_jmp_env() migration aiding macro to png_jmpbuf(). - Fixed "interlace" typo (should be "interlaced") in contrib/gregbook/read2-x.c - Fixed bug with use of PNG_BEFORE_IHDR bit in png_ptr->mode, introduced when - PNG_FLAG_HAVE_CHUNK_HEADER was moved into png_ptr->mode in version 1.0.5b - Files in contrib/gregbook were revised to use png_jmpbuf() and to select - a 24-bit visual if one is available, and to allow abbreviated options. - Files in contrib/pngminus were revised to use the png_jmpbuf() macro. - Removed spaces in makefile.linux and makefile.gcmmx, introduced in 1.0.5s - -Version 1.0.5u [March 5, 2000] - Simplified the code that detects old png.h in png.c and pngtest.c - Renamed png_spalette (_p, _pp) to png_sPLT_t (_tp, _tpp) - Increased precision of rgb_to_gray calculations from 8 to 15 bits and - added png_set_rgb_to_gray_fixed() function. - Added makefile.bc32 (32-bit Borland C++, C mode) - -Version 1.0.5v [March 11, 2000] - Added some parentheses to the png_jmpbuf macro definition. - Updated references to the zlib home page, which has moved to freesoftware.com. - Corrected bugs in documentation regarding png_read_row() and png_write_row(). - Updated documentation of png_rgb_to_gray calculations in libpng.3/libpng.txt. - Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version 1.0.3, - revised borland makefiles; added makefile.ibmvac3 and makefile.gcc (Cosmin) - -Version 1.0.6 [March 20, 2000] - Minor revisions of makefile.bor, libpng.txt, and gregbook/rpng2-win.c - Added makefile.sggcc (SGI IRIX with gcc) - -Version 1.0.6d [April 7, 2000] - Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO - Added data_length parameter to png_decompress_chunk() function - Revised documentation to remove reference to abandoned png_free_chnk functions - Fixed an error in png_rgb_to_gray_fixed() - Revised example.c, usage of png_destroy_write_struct(). - Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file - Added a check for info_ptr->free_me&PNG_FREE_TEXT when freeing text in png.c - Simplify png_sig_bytes() function to remove use of non-ISO-C strdup(). - -Version 1.0.6e [April 9, 2000] - Added png_data_freer() function. - In the code that checks for over-length tRNS chunks, added check of - info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann) - Minor revisions of libpng.txt/libpng.3. - Check for existing data and free it if the free_me flag is set, in png_set_*() - and png_handle_*(). - Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED - is defined. - Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c - and mentioned the purposes of the two macros in libpng.txt/libpng.3. - -Version 1.0.6f [April 14, 2000] - Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data. - Add checks in png_set_text() for NULL members of the input text structure. - Revised libpng.txt/libpng.3. - Removed superfluous prototype for png_set_iTXt from png.h - Removed "else" from pngread.c, after png_error(), and changed "0" to "length". - Changed several png_errors about malformed ancillary chunks to png_warnings. - -Version 1.0.6g [April 24, 2000] - Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined. - Relocated paragraph about png_set_background() in libpng.3/libpng.txt - and other revisions (Matthias Benckmann) - Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and - png_ptr members to restore binary compatibility with libpng-1.0.5 - (breaks compatibility with libpng-1.0.6). - -Version 1.0.6h [April 24, 2000] - Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds - libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h) - This is a temporary change for test purposes. - -Version 1.0.6i [May 2, 2000] - Rearranged some members at the end of png_info and png_struct, to put - unknown_chunks_num and free_me within the original size of the png_structs - and free_me, png_read_user_fn, and png_free_fn within the original png_info, - because some old applications allocate the structs directly instead of - using png_create_*(). - Added documentation of user memory functions in libpng.txt/libpng.3 - Modified png_read_png so that it will use user_allocated row_pointers - if present, unless free_me directs that it be freed, and added description - of the use of png_set_rows() and png_get_rows() in libpng.txt/libpng.3. - Added PNG_LEGACY_SUPPORTED macro, and #ifdef out all new (since version - 1.00) members of png_struct and png_info, to regain binary compatibility - when you define this macro. Capabilities lost in this event - are user transforms (new in version 1.0.0),the user transform pointer - (new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT, - the high-level interface, and unknown chunks support (all new in 1.0.6). - This was necessary because of old applications that allocate the structs - directly as authors were instructed to do in libpng-0.88 and earlier, - instead of using png_create_*(). - Added modes PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT which - can be used to detect codes that directly allocate the structs, and - code to check these modes in png_read_init() and png_write_init() and - generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED - was not defined. - Added makefile.intel and updated makefile.watcom (Pawel Mrochen) - -Version 1.0.6j [May 3, 2000] - Overloaded png_read_init() and png_write_init() with macros that convert - calls to png_read_init_2() or png_write_init_2() that check the version - and structure sizes. - -Version 1.0.7beta11 [May 7, 2000] - Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes - which are no longer used. - Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is - defined or when neither PNG_READ_iTXt_SUPPORTED nor PNG_WRITE_iTXt_SUPPORTED - is defined. - Made PNG_NO_READ|WRITE_iTXt the default setting, to avoid memory - overrun when old applications fill the info_ptr->text structure directly. - Added PNGAPI macro, and added it to the definitions of all exported functions. - Relocated version macro definitions ahead of the includes of zlib.h and - pngconf.h in png.h. - -Version 1.0.7beta12 [May 12, 2000] - Revised pngset.c to avoid a problem with expanding the png_debug macro. - Deleted some extraneous defines from pngconf.h - Made PNG_NO_CONSOLE_IO the default condition when PNG_BUILD_DLL is defined. - Use MSC _RPTn debugging instead of fprintf if _MSC_VER is defined. - Added png_access_version_number() function. - Check for mask&PNG_FREE_CHNK (for TEXT, SCAL, PCAL) in png_free_data(). - Expanded libpng.3/libpng.txt information about png_data_freer(). - -Version 1.0.7beta14 [May 17, 2000] (beta13 was not published) - Changed pnggccrd.c and pngvcrd.c to handle bad adaptive filter types as - warnings instead of errors, as pngrutil.c does. - Set the PNG_INFO_IDAT valid flag in png_set_rows() so png_write_png() - will actually write IDATs. - Made the default PNG_USE_LOCAL_ARRAYS depend on PNG_DLL instead of WIN32. - Make png_free_data() ignore its final parameter except when freeing data - that can have multiple instances (text, sPLT, unknowns). - Fixed a new bug in png_set_rows(). - Removed info_ptr->valid tests from png_free_data(), as in version 1.0.5. - Added png_set_invalid() function. - Fixed incorrect illustrations of png_destroy_write_struct() in example.c. - -Version 1.0.7beta15 [May 30, 2000] - Revised the deliberately erroneous Linux setjmp code in pngconf.h to produce - fewer error messages. - Rearranged checks for Z_OK to check the most likely path first in pngpread.c - and pngwutil.c. - Added checks in pngtest.c for png_create_*() returning NULL, and mentioned - in libpng.txt/libpng.3 the need for applications to check this. - Changed names of png_default_*() functions in pngtest to pngtest_*(). - Changed return type of png_get_x|y_offset_*() from png_uint_32 to png_int_32. - Fixed some bugs in the unused PNG_INCH_CONVERSIONS functions in pngget.c - Set each pointer to NULL after freeing it in png_free_data(). - Worked around a problem in pngconf.h; AIX's strings.h defines an "index" - macro that conflicts with libpng's png_color_16.index. (Dimitri - Papadapoulos) - Added "msvc" directory with MSVC++ project files (Simon-Pierre Cadieux). - -Version 1.0.7beta16 [June 4, 2000] - Revised the workaround of AIX string.h "index" bug. - Added a check for overlength PLTE chunk in pngrutil.c. - Added PNG_NO_POINTER_INDEXING macro to use array-indexing instead of pointer - indexing in pngrutil.c and pngwutil.c to accommodate a buggy compiler. - Added a warning in png_decompress_chunk() when it runs out of data, e.g. - when it tries to read an erroneous PhotoShop iCCP chunk. - Added PNG_USE_DLL macro. - Revised the copyright/disclaimer/license notice. - Added contrib/msvctest directory - -Version 1.0.7rc1 [June 9, 2000] - Corrected the definition of PNG_TRANSFORM_INVERT_ALPHA (0x0400 not 0x0200) - Added contrib/visupng directory (Willem van Schaik) - -Version 1.0.7beta18 [June 23, 2000] - Revised PNGAPI definition, and pngvcrd.c to work with __GCC__ - and do not redefine PNGAPI if it is passed in via a compiler directive. - Revised visupng/PngFile.c to remove returns from within the Try block. - Removed leading underscores from "_PNG_H" and "_PNG_SAVE_BSD_SOURCE" macros. - Updated contrib/visupng/cexcept.h to version 1.0.0. - Fixed bugs in pngwrite.c and pngwutil.c that prevented writing iCCP chunks. - -Version 1.0.7rc2 [June 28, 2000] - Updated license to include disclaimers required by UCITA. - Fixed "DJBPP" typo in pnggccrd.c introduced in beta18. - -Version 1.0.7 [July 1, 2000] - Revised the definition of "trans_values" in libpng.3/libpng.txt - -Version 1.0.8beta1 [July 8, 2000] - Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks. - Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and - pngwutil.c. - Changed PNG_EXPORT_VAR to use PNG_IMPEXP, in pngconf.h. - Removed unused "#include " from png.c - Added WindowsCE support. - Revised pnggccrd.c to work with gcc-2.95.2 and in the Cygwin environment. - -Version 1.0.8beta2 [July 10, 2000] - Added project files to the wince directory and made further revisions - of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE. - -Version 1.0.8beta3 [July 11, 2000] - Only set the PNG_FLAG_FREE_TRNS or PNG_FREE_TRNS flag in png_handle_tRNS() - for indexed-color input files to avoid potential double-freeing trans array - under some unusual conditions; problem was introduced in version 1.0.6f. - Further revisions to pngtest.c and files in the wince subdirectory. - -Version 1.0.8beta4 [July 14, 2000] - Added the files pngbar.png and pngbar.jpg to the distribution. - Added makefile.cygwin, and cygwin support in pngconf.h - Added PNG_NO_ZALLOC_ZERO macro (makes png_zalloc skip zeroing memory) - -Version 1.0.8rc1 [July 16, 2000] - Revised png_debug() macros and statements to eliminate compiler warnings. - -Version 1.0.8 [July 24, 2000] - Added png_flush() in pngwrite.c, after png_write_IEND(). - Updated makefile.hpux to build a shared library. - -Version 1.0.9beta1 [November 10, 2000] - Fixed typo in scripts/makefile.hpux - Updated makevms.com in scripts and contrib/* and contrib/* (Martin Zinser) - Fixed seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser) - Changed "cdrom.com" in documentation to "libpng.org" - Revised pnggccrd.c to get it all working, and updated makefile.gcmmx (Greg). - Changed type of "params" from voidp to png_voidp in png_read|write_png(). - Make sure PNGAPI and PNG_IMPEXP are defined in pngconf.h. - Revised the 3 instances of WRITEFILE in pngtest.c. - Relocated "msvc" and "wince" project subdirectories into "dll" subdirectory. - Updated png.rc in dll/msvc project - Revised makefile.dec to define and use LIBPATH and INCPATH - Increased size of global png_libpng_ver[] array from 12 to 18 chars. - Made global png_libpng_ver[], png_sig[] and png_pass_*[] arrays const. - Removed duplicate png_crc_finish() from png_handle_bKGD() function. - Added a warning when application calls png_read_update_info() multiple times. - Revised makefile.cygwin - Fixed bugs in iCCP support in pngrutil.c and pngwutil.c. - Replaced png_set_empty_plte_permitted() with png_permit_mng_features(). - -Version 1.0.9beta2 [November 19, 2000] - Renamed the "dll" subdirectory "projects". - Added borland project files to "projects" subdirectory. - Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate. - Add error message in png_set_compression_buffer_size() when malloc fails. - -Version 1.0.9beta3 [November 23, 2000] - Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project. - Removed the png_flush() in pngwrite.c that crashes some applications - that don't set png_output_flush_fn. - Added makefile.macosx and makefile.aix to scripts directory. - -Version 1.0.9beta4 [December 1, 2000] - Change png_chunk_warning to png_warning in png_check_keyword(). - Increased the first part of msg buffer from 16 to 18 in png_chunk_error(). - -Version 1.0.9beta5 [December 15, 2000] - Added support for filter method 64 (for PNG datastreams embedded in MNG). - -Version 1.0.9beta6 [December 18, 2000] - Revised png_set_filter() to accept filter method 64 when appropriate. - Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to - help prevent applications from using MNG features in PNG datastreams. - Added png_permit_mng_features() function. - Revised libpng.3/libpng.txt. Changed "filter type" to "filter method". - -Version 1.0.9rc1 [December 23, 2000] - Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c - Fixed error handling of unknown compression type in png_decompress_chunk(). - In pngconf.h, define __cdecl when _MSC_VER is defined. - -Version 1.0.9beta7 [December 28, 2000] - Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places. - Revised memory management in png_set_hIST and png_handle_hIST in a backward - compatible manner. PLTE and tRNS were revised similarly. - Revised the iCCP chunk reader to ignore trailing garbage. - -Version 1.0.9beta8 [January 12, 2001] - Moved pngasmrd.h into pngconf.h. - Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop. - -Version 1.0.9beta9 [January 15, 2001] - Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to - wince and msvc project module definition files. - Minor revision of makefile.cygwin. - Fixed bug with progressive reading of narrow interlaced images in pngpread.c - -Version 1.0.9beta10 [January 16, 2001] - Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined. - Fixed "png_mmx_supported" typo in project definition files. - -Version 1.0.9beta11 [January 19, 2001] - Updated makefile.sgi to make shared library. - Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED - by default, for the benefit of DLL forward compatibility. These will - be re-enabled in version 1.2.0. - -Version 1.0.9rc2 [January 22, 2001] - Revised cygwin support. - -Version 1.0.9 [January 31, 2001] - Added check of cygwin's ALL_STATIC in pngconf.h - Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos. - -Version 1.0.10beta1 [March 14, 2001] - Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc. - Reformatted libpng.3 to eliminate bad line breaks. - Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c - Added prototype for png_mmx_support() near the top of pnggccrd.c - Moved some error checking from png_handle_IHDR to png_set_IHDR. - Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros. - Revised png_mmx_support() function in pnggccrd.c - Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c - Fixed memory leak in contrib/visupng/PngFile.c - Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version) - Added warnings when retrieving or setting gamma=0. - Increased the first part of msg buffer from 16 to 18 in png_chunk_warning(). - -Version 1.0.10rc1 [March 23, 2001] - Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy, - and png_strlen. - Revised png_mmx_supported() function in pnggccrd.c to return proper value. - Fixed bug in progressive reading (pngpread.c) with small images (height < 8). - -Version 1.0.10 [March 30, 2001] - Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin - Added beos project files (Chris Herborth) - -Version 1.0.11beta1 [April 3, 2001] - Added type casts on several png_malloc() calls (Dimitri Papadapoulos). - Removed a no-longer needed AIX work-around from pngconf.h - Changed several "//" single-line comments to C-style in pnggccrd.c - -Version 1.0.11beta2 [April 11, 2001] - Removed PNGAPI from several functions whose prototypes did not have PNGAPI. - Updated scripts/pngos2.def - -Version 1.0.11beta3 [April 14, 2001] - Added checking the results of many instances of png_malloc() for NULL - -Version 1.0.11beta4 [April 20, 2001] - Undid the changes from version 1.0.11beta3. Added a check for NULL return - from user's malloc_fn(). - Removed some useless type casts of the NULL pointer. - Added makefile.netbsd - -Version 1.0.11 [April 27, 2001] - Revised makefile.netbsd - -Version 1.0.12beta1 [May 14, 2001] - Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot) - Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h - Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings. - Eliminated the png_error about apps using png_read|write_init(). Instead, - libpng will reallocate the png_struct and info_struct if they are too small. - This retains future binary compatibility for old applications written for - libpng-0.88 and earlier. - -Version 1.2.0beta1 [May 6, 2001] - Bumped DLLNUM to 2. - Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED - by default. - Added runtime selection of MMX features. - Added png_set_strip_error_numbers function and related macros. - -Version 1.2.0beta2 [May 7, 2001] - Finished merging 1.2.0beta1 with version 1.0.11 - Added a check for attempts to read or write PLTE in grayscale PNG datastreams. - -Version 1.2.0beta3 [May 17, 2001] - Enabled user memory function by default. - Modified png_create_struct so it passes user mem_ptr to user memory allocator. - Increased png_mng_features flag from png_byte to png_uint_32. - Bumped shared-library (so-number) and dll-number to 3. - -Version 1.2.0beta4 [June 23, 2001] - Check for missing profile length field in iCCP chunk and free chunk_data - in case of truncated iCCP chunk. - Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc - Bumped dll-number from 2 to 3 in makefile.cygwin - Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly - if user attempts to run it on an 8-bit display. - Updated contrib/gregbook - Use png_malloc instead of png_zalloc to allocate palette in pngset.c - Updated makefile.ibmc - Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes - of png_write_oFFS width and height from png_uint_32 to png_int_32. - Updated example.c - Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c - -Version 1.2.0beta5 [August 8, 2001] - Revised contrib/gregbook - Revised makefile.gcmmx - Revised pnggccrd.c to conditionally compile some thread-unsafe code only - when PNG_THREAD_UNSAFE_OK is defined. - Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with - value exceeding 2^bit_depth-1 - Revised makefile.sgi and makefile.sggcc - Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c - Removed restriction that do_invert_mono only operate on 1-bit opaque files - -Version 1.2.0 [September 1, 2001] - Changed a png_warning() to png_debug() in pnggccrd.c - Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC(). - -Version 1.2.1beta1 [October 19, 2001] - Revised makefile.std in contrib/pngminus - Include background_1 in png_struct regardless of gamma support. - Revised makefile.netbsd and makefile.macosx, added makefile.darwin. - Revised example.c to provide more details about using row_callback(). - -Version 1.2.1beta2 [October 25, 2001] - Added type cast to each NULL appearing in a function call, except for - WINCE functions. - Added makefile.so9. - -Version 1.2.1beta3 [October 27, 2001] - Removed type casts from all NULLs. - Simplified png_create_struct_2(). - -Version 1.2.1beta4 [November 7, 2001] - Revised png_create_info_struct() and png_creat_struct_2(). - Added error message if png_write_info() was omitted. - Type cast NULLs appearing in function calls when _NO_PROTO or - PNG_TYPECAST_NULL is defined. - -Version 1.2.1rc1 [November 24, 2001] - Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL - is defined. - Changed typecast of "size" argument to png_size_t in pngmem.c calls to - the user malloc_fn, to agree with the prototype in png.h - Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev) - Updated makefile.sgi to recognize LIBPATH and INCPATH. - Updated various makefiles so "make clean" does not remove previous major - version of the shared library. - -Version 1.2.1rc2 [December 4, 2001] - Always allocate 256-entry internal palette, hist, and trans arrays, to - avoid out-of-bounds memory reference caused by invalid PNG datastreams. - Added a check for prefix_length > data_length in iCCP chunk handler. - -Version 1.2.1 [December 7, 2001] - None. - -Version 1.2.2beta1 [February 22, 2002] - Fixed a bug with reading the length of iCCP profiles (Larry Reeves). - Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate - libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h - Revised makefile.darwin to remove "-undefined suppress" option. - Added checks for gamma and chromaticity values over 21474.83, which exceed - the limit for PNG unsigned 32-bit integers when encoded. - Revised calls to png_create_read_struct() and png_create_write_struct() - for simpler debugging. - Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK) - -Version 1.2.2beta2 [February 23, 2002] - Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths. - Check for invalid image dimensions in png_get_IHDR. - Added missing "fi;" in the install target of the SGI makefiles. - Added install-static to all makefiles that make shared libraries. - Always do gamma compensation when image is partially transparent. - -Version 1.2.2beta3 [March 7, 2002] - Compute background.gray and background_1.gray even when color_type is RGB - in case image gets reduced to gray later. - Modified shared-library makefiles to install pkgconfig/libpngNN.pc. - Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown - Removed unused png_write_destroy_info prototype from png.h - Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case - Added install-shared target to all makefiles that make shared libraries. - Stopped a double free of palette, hist, and trans when not using free_me. - Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64. - -Version 1.2.2beta4 [March 8, 2002] - Compute background.gray and background_1.gray even when color_type is RGB - in case image gets reduced to gray later (Jason Summers). - Relocated a misplaced /bin/rm in the "install-shared" makefile targets - Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library. - -Version 1.2.2beta5 [March 26, 2002] - Added missing PNGAPI to several function definitions. - Check for invalid bit_depth or color_type in png_get_IHDR(), and - check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen). - Revised iTXt support to accept NULL for lang and lang_key. - Compute gamma for color components of background even when color_type is gray. - Changed "()" to "{}" in scripts/libpng.pc.in. - Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN - Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so - -Version 1.2.2beta6 [March 31, 2002] - -Version 1.0.13beta1 [March 31, 2002] - Prevent png_zalloc() from trying to memset memory that it failed to acquire. - Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate). - Ensure that the right function (user or default) is used to free the - png_struct after an error in png_create_read_struct_2(). - -Version 1.2.2rc1 [April 7, 2002] - -Version 1.0.13rc1 [April 7, 2002] - Save the ebx register in pnggccrd.c (Sami Farin) - Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner). - Updated makefiles to put headers in include/libpng and remove old include/*.h. - -Version 1.2.2 [April 15, 2002] - -Version 1.0.13 [April 15, 2002] - Revised description of png_set_filter() in libpng.3/libpng.txt. - Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd - -Version 1.0.13patch01 [April 17, 2002] - -Version 1.2.2patch01 [April 17, 2002] - Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and - makefile.sggcc - Fixed VER -> PNGVER typo in makefile.macosx and added install-static to - install - Added install: target to makefile.32sunu and makefile.64sunu - -Version 1.0.13patch03 [April 18, 2002] - -Version 1.2.2patch03 [April 18, 2002] - Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng - subdirectory to libpngNN subdirectory without the full pathname. - Moved generation of libpng.pc from "install" to "all" in 15 makefiles. - -Version 1.2.3rc1 [April 28, 2002] - Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos). - Added $(DESTDIR) feature to 24 makefiles (Tim Mooney) - Fixed bug with $prefix, should be $(prefix) in makefile.hpux. - Updated cygwin-specific portion of pngconf.h and revised makefile.cygwin - Added a link from libpngNN.pc to libpng.pc in 15 makefiles. - Added links from include/libpngNN/*.h to include/*.h in 24 makefiles. - Revised makefile.darwin to make relative links without full pathname. - Added setjmp() at the end of png_create_*_struct_2() in case user forgets - to put one in their application. - Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and - removed them from module definition files. - -Version 1.2.3rc2 [May 1, 2002] - Fixed bug in reporting number of channels in pngget.c and pngset.c, - that was introduced in version 1.2.2beta5. - Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(), - png_default_flush(), and png_push_fill_buffer() and included them in - module definition files. - Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles. - -Version 1.2.3rc3 [May 1, 2002] - Revised prototype for png_default_flush() - Remove old libpng.pc and libpngNN.pc before installing new ones. - -Version 1.2.3rc4 [May 2, 2002] - Typos in *.def files (png_default_read|write -> png_default_read|write_data) - In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc - Added libpng-config and libpngNN-config and modified makefiles to install - them. - Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles - Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp - -Version 1.2.3rc5 [May 11, 2002] - Changed "error" and "message" in prototypes to "error_message" and - "warning_message" to avoid namespace conflict. - Revised 15 makefiles to build libpng-config from libpng-config-*.in - Once more restored png_zalloc and png_zfree to regular nonexported form. - Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer - to nonexported form, but with PNGAPI, and removed them from module def - files. - -Version 1.2.3rc6 [May 14, 2002] - Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c - Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp. - Removed leftover libpng-config "sed" script from four makefiles. - Revised libpng-config creating script in 16 makefiles. - -Version 1.2.3 [May 22, 2002] - Revised libpng-config target in makefile.cygwin. - Removed description of png_set_mem_fn() from documentation. - Revised makefile.freebsd. - Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR). - Revised projects/msvc/README.txt - Changed -lpng to -lpngNN in LDFLAGS in several makefiles. - -Version 1.2.4beta1 [May 24, 2002] - Added libpng.pc and libpng-config to "all:" target in 16 makefiles. - Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH) - Added missing "\" before closing double quote in makefile.gcmmx. - Plugged various memory leaks; added png_malloc_warn() and png_set_text_2() - functions. - -Version 1.2.4beta2 [June 25, 2002] - Plugged memory leak of png_ptr->current_text (Matt Holgate). - Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison) - Added -soname to the loader flags in makefile.dec, makefile.sgi, and - makefile.sggcc. - Added "test-installed" target to makefile.linux, makefile.gcmmx, - makefile.sgi, and makefile.sggcc. - -Version 1.2.4beta3 [June 28, 2002] - Plugged memory leak of row_buf in pngtest.c when there is a png_error(). - Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data. - Added "test-installed" target to makefile.32sunu, makefile.64sunu, - makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, - makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9. - -Version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002] - Added "test-installed" target to makefile.cygwin and makefile.sco. - Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro. - -Version 1.2.4 and 1.0.14 [July 8, 2002] - Changed png_warning() to png_error() when width is too large to process. - -Version 1.2.4patch01 [July 20, 2002] - Revised makefile.cygwin to use DLL number 12 instead of 13. - -Version 1.2.5beta1 [August 6, 2002] - Added code to contrib/gregbook/readpng2.c to ignore unused chunks. - Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11) - Removed some stray *.o files from contrib/gregbook. - Changed png_error() to png_warning() about "Too much data" in pngpread.c - and about "Extra compressed data" in pngrutil.c. - Prevent png_ptr->pass from exceeding 7 in png_push_finish_row(). - Updated makefile.hpgcc - Updated png.c and pnggccrd.c handling of return from png_mmx_support() - -Version 1.2.5beta2 [August 15, 2002] - Only issue png_warning() about "Too much data" in pngpread.c when avail_in - is nonzero. - Updated makefiles to install a separate libpng.so.3 with its own rpath. - -Version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002] - Revised makefiles to not remove previous minor versions of shared libraries. - -Version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002] - Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared - library loader directive. - Added missing "$OBJSDLL" line to makefile.gcmmx. - Added missing "; fi" to makefile.32sunu. - -Version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002] - Revised libpng-config script. - -Version 1.2.5 and 1.0.15 [October 3, 2002] - Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux, - and makefile.aix. - Relocated two misplaced PNGAPI lines in pngtest.c - -Version 1.2.6beta1 [October 22, 2002] - Commented out warning about uninitialized mmx_support in pnggccrd.c. - Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h. - Relocated two more misplaced PNGAPI lines in pngtest.c - Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams, - introduced in version 1.0.2. - Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu. - -Version 1.2.6beta2 [November 1, 2002] - Added libpng-config "--ldopts" output. - Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)" - in makefiles. - -Version 1.2.6beta3 [July 18, 2004] - Reverted makefile changes from version 1.2.6beta2 and some of the changes - from version 1.2.6beta1; these will be postponed until version 1.2.7. - Version 1.2.6 is going to be a simple bugfix release. - Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile. - Fixed potential overrun in pngerror.c by using strncpy instead of memcpy. - Added "#!/bin/sh" at the top of configure, for recognition of the - 'x' flag under Cygwin (Cosmin). - Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin). - Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin). - Fixed the special memory handler for Borland C under DOS, in pngmem.c - (Cosmin). - Removed some spurious assignments in pngrutil.c (Cosmin). - Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings - on 16-bit platforms (Cosmin). - Enclosed shift op expressions in parentheses, to silence warnings (Cosmin). - Used proper type png_fixed_point, to avoid problems on 16-bit platforms, - in png_handle_sRGB() (Cosmin). - Added compression_type to png_struct, and optimized the window size - inside the deflate stream (Cosmin). - Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin). - Fixed handling of unknown chunks that come after IDAT (Cosmin). - Allowed png_error() and png_warning() to work even if png_ptr == NULL - (Cosmin). - Replaced row_info->rowbytes with row_bytes in png_write_find_filter() - (Cosmin). - Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre). - Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded - values in png.c (Simon-Pierre, Cosmin). - Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre). - Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc - (Simon-Pierre). - Moved the definition of PNG_HEADER_VERSION_STRING near the definitions - of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin). - Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin). - Updated scripts/makefile.vc(a)win32 (Cosmin). - Updated the MSVC project (Simon-Pierre, Cosmin). - Updated the Borland C++ Builder project (Cosmin). - Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin). - Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin). - Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin). - Added extra guard around inclusion of Turbo C memory headers, in pngconf.h - (Cosmin). - Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to - projects/cbuilder5/ (Cosmin). - Moved projects/visualc6/png32ms.def to scripts/pngw32.def, - and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin). - Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin). - Changed line endings to DOS style in cbuilder5 and visualc6 files, even - in the tar.* distributions (Cosmin). - Updated contrib/visupng/VisualPng.dsp (Cosmin). - Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin). - Added a separate distribution with "configure" and supporting files (Junichi). - -Version 1.2.6beta4 [July 28, 2004] - Added user ability to change png_size_t via a PNG_SIZE_T macro. - Added png_sizeof() and png_convert_size() functions. - Added PNG_SIZE_MAX (maximum value of a png_size_t variable. - Added check in png_malloc_default() for (size_t)size != (png_uint_32)size - which would indicate an overflow. - Changed sPLT failure action from png_error to png_warning and abandon chunk. - Changed sCAL and iCCP failures from png_error to png_warning and abandon. - Added png_get_uint_31(png_ptr, buf) function. - Added PNG_UINT_32_MAX macro. - Renamed PNG_MAX_UINT to PNG_UINT_31_MAX. - Made png_zalloc() issue a png_warning and return NULL on potential - overflow. - Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x - Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4. - Revised Borland portion of png_malloc() to return NULL or issue - png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK. - Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove - sequential read support. - Added some "#if PNG_WRITE_SUPPORTED" blocks. - Added #ifdef to remove some redundancy in png_malloc_default(). - Use png_malloc instead of png_zalloc to allocate the pallete. - -Version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004] - Fixed buffer overflow vulnerability (CVE-2004-0597) in png_handle_tRNS(). - Fixed NULL dereference vulnerability (CVE-2004-0598) in png_handle_iCCP(). - Fixed integer overflow vulnerability (CVE-2004-0599) in png_read_png(). - Fixed some harmless bugs in png_handle_sBIT, etc, that would cause - duplicate chunk types to go undetected. - Fixed some timestamps in the -config version - Rearranged order of processing of color types in png_handle_tRNS(). - Added ROWBYTES macro to calculate rowbytes without integer overflow. - Updated makefile.darwin and removed makefile.macosx from scripts directory. - Imposed default one million column, one-million row limits on the image - dimensions, and added png_set_user_limits() function to override them. - Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro. - Fixed wrong cast of returns from png_get_user_width|height_max(). - Changed some "keep the compiler happy" from empty statements to returns, - Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution - -Version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004] - Revised makefile.darwin and makefile.solaris. Removed makefile.macosx. - Revised pngtest's png_debug_malloc() to use png_malloc() instead of - png_malloc_default() which is not supposed to be exported. - Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in - pngpread.c. Bug was introduced in 1.2.6rc1. - Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1. - Fixed old bug in RGB to Gray transformation. - Fixed problem with 64-bit compilers by casting arguments to abs() - to png_int_32. - Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9). - Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin) - Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles. - Added code to update the row_info->colortype in png_do_read_filler() (MSB). - -Version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004] - Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid - trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro. - Revised documentation of png_set_keep_unknown_chunks(). - Check handle_as_unknown status in pngpread.c, as in pngread.c previously. - Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h - Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c - -Version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004] - Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of - "pinfo" was out of place). - -Version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004] - Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED - section of png.h where they were inadvertently placed in version rc3. - -Version 1.2.6 and 1.0.16 [August 15, 2004] - Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1. - -Version 1.2.7beta1 [August 26, 2004] - Removed unused pngasmrd.h file. - Removed references to uu.net for archived files. Added references to - PNG Spec (second edition) and the PNG ISO/IEC Standard. - Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR. - Fixed bug with "optimized window size" in the IDAT datastream, that - causes libpng to write PNG files with incorrect zlib header bytes. - -Version 1.2.7beta2 [August 28, 2004] - Fixed bug with sCAL chunk and big-endian machines (David Munro). - Undid new code added in 1.2.6rc2 to update the color_type in - png_set_filler(). - Added png_set_add_alpha() that updates color type. - -Version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004] - Revised png_set_strip_filler() to not remove alpha if color_type has alpha. - -Version 1.2.7 and 1.0.17 [September 12, 2004] - Added makefile.hp64 - Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin - -Version 1.2.8beta1 [November 1, 2004] - Fixed bug in png_text_compress() that would fail to complete a large block. - Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during - strip alpha operation in png_do_strip_filler(). - Added PNG_1_2_X definition in pngconf.h - Use #ifdef to comment out png_info_init in png.c and png_read_init in - pngread.c (as of 1.3.0) - -Version 1.2.8beta2 [November 2, 2004] - Reduce color_type to a nonalpha type after strip alpha operation in - png_do_strip_filler(). - -Version 1.2.8beta3 [November 3, 2004] - Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM - -Version 1.2.8beta4 [November 12, 2004] - Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin). - Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin). - Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection - of data type in deflate (Cosmin). - Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of - PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. - -Version 1.2.8beta5 [November 20, 2004] - Use png_ptr->flags instead of png_ptr->transformations to pass - PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI - compatibility. - Revised handling of SPECIALBUILD, PRIVATEBUILD, - PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. - -Version 1.2.8rc1 [November 24, 2004] - Moved handling of BUILD macros from pngconf.h to png.h - Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently - omitted from beta5. - Revised scripts/pngw32.rc - Despammed mailing addresses by masking "@" with "at". - Inadvertently installed a supposedly faster test version of pngrutil.c - -Version 1.2.8rc2 [November 26, 2004] - Added two missing "\" in png.h - Change tests in pngread.c and pngpread.c to - if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA)) - png_do_read_transformations(png_ptr); - -Version 1.2.8rc3 [November 28, 2004] - Reverted pngrutil.c to version libpng-1.2.8beta5. - Added scripts/makefile.elf with supporting code in pngconf.h for symbol - versioning (John Bowler). - -Version 1.2.8rc4 [November 29, 2004] - Added projects/visualc7 (Simon-pierre). - -Version 1.2.8rc5 [November 29, 2004] - Fixed new typo in scripts/pngw32.rc - -Version 1.2.8 [December 3, 2004] - Removed projects/visualc7, added projects/visualc71. - -Version 1.2.9beta1 [February 21, 2006] - Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints - Revised man page and libpng.txt to make it clear that one should not call - png_read_end or png_write_end after png_read_png or png_write_png. - Updated references to png-mng-implement mailing list. - Fixed an incorrect typecast in pngrutil.c - Added PNG_NO_READ_SUPPORTED conditional for making a write-only library. - Added PNG_NO_WRITE_INTERLACING_SUPPORTED conditional. - Optimized alpha-inversion loops in pngwtran.c - Moved test for nonzero gamma outside of png_build_gamma_table() in pngrtran.c - Make sure num_trans is <= 256 before copying data in png_set_tRNS(). - Make sure num_palette is <= 256 before copying data in png_set_PLTE(). - Interchanged order of write_swap_alpha and write_invert_alpha transforms. - Added parentheses in the definition of PNG_LIBPNG_BUILD_TYPE (Cosmin). - Optimized zlib window flag (CINFO) in contrib/pngsuite/*.png (Cosmin). - Updated scripts/makefile.bc32 for Borland C++ 5.6 (Cosmin). - Exported png_get_uint_32, png_save_uint_32, png_get_uint_16, png_save_uint_16, - png_get_int_32, png_save_int_32, png_get_uint_31 (Cosmin). - Added type cast (png_byte) in png_write_sCAL() (Cosmin). - Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin). - Default iTXt support was inadvertently enabled. - -Version 1.2.9beta2 [February 21, 2006] - Check for png_rgb_to_gray and png_gray_to_rgb read transformations before - checking for png_read_dither in pngrtran.c - Revised checking of chromaticity limits to accommodate extended RGB - colorspace (John Denker). - Changed line endings in some of the project files to CRLF, even in the - "Unix" tar distributions (Cosmin). - Made png_get_int_32 and png_save_int_32 always available (Cosmin). - Updated scripts/pngos2.def, scripts/pngw32.def and projects/wince/png32ce.def - with the newly exported functions. - Eliminated distributions without the "configure" script. - Updated INSTALL instructions. - -Version 1.2.9beta3 [February 24, 2006] - Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp - Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler) - Removed reference to pngasmrd.h from Makefile.am - Renamed CHANGES to ChangeLog. - Renamed LICENSE to COPYING. - Renamed ANNOUNCE to NEWS. - Created AUTHORS file. - -Version 1.2.9beta4 [March 3, 2006] - Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac - Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING. - Removed newline from the end of some error and warning messages. - Removed test for sqrt() from configure.ac and configure. - Made swap tables in pngtrans.c PNG_CONST (Carlo Bramix). - Disabled default iTXt support that was inadvertently enabled in - libpng-1.2.9beta1. - Added "OS2" to list of systems that don't need underscores, in pnggccrd.c - Removed libpng version and date from *.c files. - -Version 1.2.9beta5 [March 4, 2006] - Removed trailing blanks from source files. - Put version and date of latest change in each source file, and changed - copyright year accordingly. - More cleanup of configure.ac, Makefile.am, and associated scripts. - Restored scripts/makefile.elf which was inadvertently deleted. - -Version 1.2.9beta6 [March 6, 2006] - Fixed typo (RELEASE) in configuration files. - -Version 1.2.9beta7 [March 7, 2006] - Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am - Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s() - in png.h. - Updated makefile.elf as suggested by debian. - Made cosmetic changes to some makefiles, adding LN_SF and other macros. - Made some makefiles accept "exec_prefix". - -Version 1.2.9beta8 [March 9, 2006] - Fixed some "#if defined (..." which should be "#if defined(..." - Bug introduced in libpng-1.2.8. - Fixed inconsistency in definition of png_default_read_data() - Restored blank that was lost from makefile.sggcc "clean" target in beta7. - Revised calculation of "current" and "major" for irix in ltmain.sh - Changed "mkdir" to "MKDIR_P" in some makefiles. - Separated PNG_EXPAND and PNG_EXPAND_tRNS. - Added png_set_expand_gray_1_2_4_to_8() and deprecated - png_set_gray_1_2_4_to_8() which also expands tRNS to alpha. - -Version 1.2.9beta9 [March 10, 2006] - Include "config.h" in pngconf.h when available. - Added some checks for NULL png_ptr or NULL info_ptr (timeless) - -Version 1.2.9beta10 [March 20, 2006] - Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin) - Made pnggccrd.c PIC-compliant (Christian Aichinger). - Added makefile.mingw (Wolfgang Glas). - Revised pngconf.h MMX checking. - -Version 1.2.9beta11 [March 22, 2006] - Fixed out-of-order declaration in pngwrite.c that was introduced in beta9 - Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros. - -Version 1.2.9rc1 [March 31, 2006] - Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin). - Removed nonsensical assertion check from pngtest.c (Cosmin). - -Version 1.2.9 [April 14, 2006] - Revised makefile.beos and added "none" selector in ltmain.sh - -Version 1.2.10beta1 [April 15, 2006] - Renamed "config.h" to "png_conf.h" and revised Makefile.am to add - -DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h - to include png_conf.h only when PNG_BUILDING_LIBPNG is defined. - -Version 1.2.10beta2 [April 15, 2006] - Manually updated Makefile.in and configure. Changed png_conf.h.in - back to config.h. - -Version 1.2.10beta3 [April 15, 2006] - Change png_conf.h back to config.h in pngconf.h. - -Version 1.2.10beta4 [April 16, 2006] - Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*. - -Version 1.2.10beta5 [April 16, 2006] - Added a configure check for compiling assembler code in pnggccrd.c - -Version 1.2.10beta6 [April 17, 2006] - Revised the configure check for pnggccrd.c - Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@ - Added @LIBPNG_DEFINES@ to arguments when building libpng.sym - -Version 1.2.10beta7 [April 18, 2006] - Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles. - -Version 1.2.10rc1 [April 19, 2006] - Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD - Fixed "LN_FS" typo in makefile.sco and makefile.solaris. - -Version 1.2.10rc2 [April 20, 2006] - Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE - in configure.ac and configure - Made the configure warning about versioned symbols less arrogant. - -Version 1.2.10rc3 [April 21, 2006] - Added a note in libpng.txt that png_set_sig_bytes(8) can be used when - writing an embedded PNG without the 8-byte signature. - Revised makefiles and configure to avoid making links to libpng.so.* - -Version 1.2.10 [April 23, 2006] - Reverted configure to "rc2" state. - -Version 1.2.11beta1 [May 31, 2006] - scripts/libpng.pc.in contained "configure" style version info and would - not work with makefiles. - The shared-library makefiles were linking to libpng.so.0 instead of - libpng.so.3 compatibility as the library. - -Version 1.2.11beta2 [June 2, 2006] - Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid - buffer overflow. - Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb) - -Version 1.2.11beta3 [June 5, 2006] - Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin). - Removed the accidental leftover Makefile.in~ (Cosmin). - Avoided potential buffer overflow and optimized buffer in - png_write_sCAL(), png_write_sCAL_s() (Cosmin). - Removed the include directories and libraries from CFLAGS and LDFLAGS - in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin). - -Version 1.2.11beta4 [June 6, 2006] - Allow zero-length IDAT chunks after the entire zlib datastream, but not - after another intervening chunk type. - -Version 1.0.19rc1, 1.2.11rc1 [June 13, 2006] - Deleted extraneous square brackets from [config.h] in configure.ac - -Version 1.0.19rc2, 1.2.11rc2 [June 14, 2006] - Added prototypes for PNG_INCH_CONVERSIONS functions to png.h - Revised INSTALL and autogen.sh - Fixed typo in several makefiles (-W1 should be -Wl) - Added typedef for png_int_32 and png_uint_32 on 64-bit systems. - -Version 1.0.19rc3, 1.2.11rc3 [June 15, 2006] - Removed the new typedefs for 64-bit systems (delay until version 1.4.0) - Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid - reading out of bounds. - -Version 1.0.19rc4, 1.2.11rc4 [June 15, 2006] - Really removed the new typedefs for 64-bit systems. - -Version 1.0.19rc5, 1.2.11rc5 [June 22, 2006] - Removed png_sig_bytes entry from scripts/pngw32.def - -Version 1.0.19, 1.2.11 [June 26, 2006] - None. - -Version 1.0.20, 1.2.12 [June 27, 2006] - Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid - buffer overflow. - -Version 1.2.13beta1 [October 2, 2006] - Removed AC_FUNC_MALLOC from configure.ac - Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h - Change "logical" to "bitwise" throughout documentation. - Detect and fix attempt to write wrong iCCP profile length (CVE-2006-7244) - -Version 1.0.21, 1.2.13 [November 14, 2006] - Fix potential buffer overflow in sPLT chunk handler. - Fix Makefile.am to not try to link to noexistent files. - Check all exported functions for NULL png_ptr. - -Version 1.2.14beta1 [November 17, 2006] - Relocated three misplaced tests for NULL png_ptr. - Built Makefile.in with automake-1.9.6 instead of 1.9.2. - Build configure with autoconf-2.60 instead of 2.59 - -Version 1.2.14beta2 [November 17, 2006] - Added some typecasts in png_zalloc(). - -Version 1.2.14rc1 [November 20, 2006] - Changed "strtod" to "png_strtod" in pngrutil.c - -Version 1.0.22, 1.2.14 [November 27, 2006] - Added missing "$(srcdir)" in Makefile.am and Makefile.in - -Version 1.2.15beta1 [December 3, 2006] - Generated configure with autoconf-2.61 instead of 2.60 - Revised configure.ac to update libpng.pc and libpng-config. - -Version 1.2.15beta2 [December 3, 2006] - Always export MMX asm functions, just stubs if not building pnggccrd.c - -Version 1.2.15beta3 [December 4, 2006] - Add "png_bytep" typecast to profile while calculating length in pngwutil.c - -Version 1.2.15beta4 [December 7, 2006] - Added scripts/CMakeLists.txt - Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta - -Version 1.2.15beta5 [December 7, 2006] - Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c - Revised scripts/CMakeLists.txt - -Version 1.2.15beta6 [December 13, 2006] - Revised scripts/CMakeLists.txt and configure.ac - -Version 1.2.15rc1 [December 18, 2006] - Revised scripts/CMakeLists.txt - -Version 1.2.15rc2 [December 21, 2006] - Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers. - Added scripts/makefile.nommx - -Version 1.2.15rc3 [December 25, 2006] - Fixed shared library numbering error that was introduced in 1.2.15beta6. - -Version 1.2.15rc4 [December 27, 2006] - Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set. - -Version 1.2.15rc5 [December 31, 2006] - Revised handling of rgb_to_gray. - -Version 1.2.15 [January 5, 2007] - Added some (unsigned long) typecasts in pngtest.c to avoid printing errors. - -Version 1.2.16beta1 [January 6, 2007] - Fix bugs in makefile.nommx - -Version 1.2.16beta2 [January 16, 2007] - Revised scripts/CMakeLists.txt - -Version 1.2.16 [January 31, 2007] - No changes. - -Version 1.2.17beta1 [March 6, 2007] - Revised scripts/CMakeLists.txt to install both shared and static libraries. - Deleted a redundant line from pngset.c. - -Version 1.2.17beta2 [April 26, 2007] - Relocated misplaced test for png_ptr == NULL in pngpread.c - Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN - flags. - Changed remaining instances of PNG_ASSEMBLER_* to PNG_MMX_* - Added pngerror() when write_IHDR fails in deflateInit2(). - Added "const" to some array declarations. - Mention examples of libpng usage in the libpng*.txt and libpng.3 documents. - -Version 1.2.17rc1 [May 4, 2007] - No changes. - -Version 1.2.17rc2 [May 8, 2007] - Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications - calling set_unknown_chunk_location() need them. - Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in - png_set_expand_gray_1_2_4_to_8(). - Added png_ptr->unknown_chunk to hold working unknown chunk data, so it - can be free'ed in case of error. Revised unknown chunk handling in - pngrutil.c and pngpread.c to use this structure. - -Version 1.2.17rc3 [May 8, 2007] - Revised symbol-handling in configure script. - -Version 1.2.17rc4 [May 10, 2007] - Revised unknown chunk handling to avoid storing unknown critical chunks. - -Version 1.0.25 [May 15, 2007] -Version 1.2.17 [May 15, 2007] - Added "png_ptr->num_trans=0" before error return in png_handle_tRNS, - to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664) - -Version 1.0.26 [May 15, 2007] -Version 1.2.18 [May 15, 2007] - Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script - -Version 1.2.19beta1 [May 18, 2007] - Changed "const static" to "static PNG_CONST" everywhere, mostly undoing - change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST" - Changed some handling of unused parameters, to avoid compiler warnings. - "if (unused == NULL) return;" becomes "unused = unused". - -Version 1.2.19beta2 [May 18, 2007] - Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier) - -Version 1.2.19beta3 [May 19, 2007] - Add some "png_byte" typecasts in png_check_keyword() and write new_key - instead of key in zTXt chunk (Kevin Ryde). - -Version 1.2.19beta4 [May 21, 2007] - Add png_snprintf() function and use it in place of sprint() for improved - defense against buffer overflows. - -Version 1.2.19beta5 [May 21, 2007] - Fixed png_handle_tRNS() to only use the valid bits of tRNS value. - Changed handling of more unused parameters, to avoid compiler warnings. - Removed some PNG_CONST in pngwutil.c to avoid compiler warnings. - -Version 1.2.19beta6 [May 22, 2007] - Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c - Added a special "_MSC_VER" case that defines png_snprintf to _snprintf - -Version 1.2.19beta7 [May 22, 2007] - Squelched png_squelch_warnings() in pnggccrd.c and added - an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused - the warnings that png_squelch_warnings was squelching. - -Version 1.2.19beta8 [May 22, 2007] - Removed __MMX__ from test in pngconf.h. - -Version 1.2.19beta9 [May 23, 2007] - Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro. - Revised png_squelch_warnings() so it might work. - Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86. - -Version 1.2.19beta10 [May 24, 2007] - Resquelched png_squelch_warnings(), use "__attribute__((used))" instead. - -Version 1.4.0beta1 [April 20, 2006] - Enabled iTXt support (changes png_struct, thus requires so-number change). - Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED - Eliminated PNG_1_0_X and PNG_1_2_X macros. - Removed deprecated functions png_read_init, png_write_init, png_info_init, - png_permit_empty_plte, png_set_gray_1_2_4_to_8, png_check_sig, and - removed the deprecated macro PNG_MAX_UINT. - Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h - Removed many WIN32_WCE #ifdefs (Cosmin). - Reduced dependency on C-runtime library when on Windows (Simon-Pierre) - Replaced sprintf() with png_sprintf() (Simon-Pierre) - -Version 1.4.0beta2 [April 20, 2006] - Revised makefiles and configure to avoid making links to libpng.so.* - Moved some leftover MMX-related defines from pngconf.h to pngintrn.h - Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def - -Version 1.4.0beta3 [May 10, 2006] - Updated scripts/pngw32.def to comment out MMX functions. - Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros. - Scripts/libpng.pc.in contained "configure" style version info and would - not work with makefiles. - Revised pngconf.h and added pngconf.h.in, so makefiles and configure can - pass defines to libpng and applications. - -Version 1.4.0beta4 [May 11, 2006] - Revised configure.ac, Makefile.am, and many of the makefiles to write - their defines in pngconf.h. - -Version 1.4.0beta5 [May 15, 2006] - Added a missing semicolon in Makefile.am and Makefile.in - Deleted extraneous square brackets from configure.ac - -Version 1.4.0beta6 [June 2, 2006] - Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid - buffer overflow. - Changed sonum from 0 to 1. - Removed unused prototype for png_check_sig() from png.h - -Version 1.4.0beta7 [June 16, 2006] - Exported png_write_sig (Cosmin). - Optimized buffer in png_handle_cHRM() (Cosmin). - Set pHYs = 2835 x 2835 pixels per meter, and added - sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin). - Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error(). - Added typedef for png_int_32 and png_uint_32 on 64-bit systems. - Added "(unsigned long)" typecast on png_uint_32 variables in printf lists. - -Version 1.4.0beta8 [June 22, 2006] - Added demonstration of user chunk support in pngtest.c, to support the - public sTER chunk and a private vpAg chunk. - -Version 1.4.0beta9 [July 3, 2006] - Removed ordinals from scripts/pngw32.def and removed png_info_int and - png_set_gray_1_2_4_to_8 entries. - Inline call of png_get_uint_32() in png_get_uint_31(). - Use png_get_uint_31() to get vpAg width and height in pngtest.c - Removed WINCE and Netware projects. - Removed standalone Y2KINFO file. - -Version 1.4.0beta10 [July 12, 2006] - Eliminated automatic copy of pngconf.h to pngconf.h.in from configure and - some makefiles, because it was not working reliably. Instead, distribute - pngconf.h.in along with pngconf.h and cause configure and some of the - makefiles to update pngconf.h from pngconf.h.in. - Added pngconf.h to DEPENDENCIES in Makefile.am - -Version 1.4.0beta11 [August 19, 2006] - Removed AC_FUNC_MALLOC from configure.ac. - Added a warning when writing iCCP profile with mismatched profile length. - Patched pnggccrd.c to assemble on x86_64 platforms. - Moved chunk header reading into a separate function png_read_chunk_header() - in pngrutil.c. The chunk header (len+sig) is now serialized in a single - operation (Cosmin). - Implemented support for I/O states. Added png_ptr member io_state, and - functions png_get_io_chunk_name() and png_get_io_state() in pngget.c - (Cosmin). - Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin). - Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin). - Removed the include directories and libraries from CFLAGS and LDFLAGS - in scripts/makefile.gcc (Cosmin). - Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin). - Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin). - Added pngintrn.h to the Visual C++ projects (Cosmin). - Removed scripts/list (Cosmin). - Updated copyright year in scripts/pngwin.def (Cosmin). - Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin). - Disallowed the user to redefine png_size_t, and enforced a consistent use - of png_size_t across libpng (Cosmin). - Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends - to png_size_t (Cosmin). - Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin). - Removed some unnecessary type casts (Cosmin). - Changed prototype of png_get_compression_buffer_size() and - png_set_compression_buffer_size() to work with png_size_t instead of - png_uint_32 (Cosmin). - Removed png_memcpy_check() and png_memset_check() (Cosmin). - Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin). - Clarified that png_zalloc() does not clear the allocated memory, - and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin). - Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in - pngconf.h, and used it in all memory allocation functions (Cosmin). - Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file - mentioning that the symbols declared in that file are private, and - updated the scripts and the Visual C++ projects accordingly (Cosmin). - Removed circular references between pngconf.h and pngconf.h.in in - scripts/makefile.vc*win32 (Cosmin). - Removing trailing '.' from the warning and error messages (Cosmin). - Added pngdefs.h that is built by makefile or configure, instead of - pngconf.h.in (Glenn). - Detect and fix attempt to write wrong iCCP profile length. - -Version 1.4.0beta12 [October 19, 2006] - Changed "logical" to "bitwise" in the documentation. - Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h - Add a typecast to stifle compiler warning in pngrutil.c - -Version 1.4.0beta13 [November 10, 2006] - Fix potential buffer overflow in sPLT chunk handler. - Fix Makefile.am to not try to link to noexistent files. - -Version 1.4.0beta14 [November 15, 2006] - Check all exported functions for NULL png_ptr. - -Version 1.4.0beta15 [November 17, 2006] - Relocated two misplaced tests for NULL png_ptr. - Built Makefile.in with automake-1.9.6 instead of 1.9.2. - Build configure with autoconf-2.60 instead of 2.59 - Add "install: all" in Makefile.am so "configure; make install" will work. - -Version 1.4.0beta16 [November 17, 2006] - Added a typecast in png_zalloc(). - -Version 1.4.0beta17 [December 4, 2006] - Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c - Add "png_bytep" typecast to profile while calculating length in pngwutil.c - -Version 1.4.0beta18 [December 7, 2006] - Added scripts/CMakeLists.txt - -Version 1.4.0beta19 [May 16, 2007] - Revised scripts/CMakeLists.txt - Rebuilt configure and Makefile.in with newer tools. - Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers. - Added scripts/makefile.nommx - -Version 1.4.0beta20 [July 9, 2008] - Moved several PNG_HAVE_* macros from pngpriv.h to png.h because applications - calling set_unknown_chunk_location() need them. - Moved several macro definitions from pngpriv.h to pngconf.h - Merge with changes to the 1.2.X branch, as of 1.2.30beta04. - Deleted all use of the MMX assembler code and Intel-licensed optimizations. - Revised makefile.mingw - -Version 1.4.0beta21 [July 21, 2008] - Moved local array "chunkdata" from pngrutil.c to the png_struct, so - it will be freed by png_read_destroy() in case of a read error (Kurt - Christensen). - -Version 1.4.0beta22 [July 21, 2008] - Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking. - -Version 1.4.0beta23 [July 22, 2008] - Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in - png_decompress_chunk(). - -Version 1.4.0beta24 [July 25, 2008] - Change all remaining "chunkdata" to "png_ptr->chunkdata" in - png_decompress_chunk(), and remove "chunkdata" from parameter list. - Put a call to png_check_chunk_name() in png_read_chunk_header(). - Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte. - Removed two calls to png_check_chunk_name() occurring later in the process. - Define PNG_NO_ERROR_NUMBERS by default in pngconf.h - -Version 1.4.0beta25 [July 30, 2008] - Added a call to png_check_chunk_name() in pngpread.c - Reverted png_check_chunk_name() to accept a name with a lowercase 3rd byte. - Added png_push_have_buffer() function to pngpread.c - Eliminated PNG_BIG_ENDIAN_SUPPORTED and associated png_get_* macros. - Made inline expansion of png_get_*() optional with PNG_USE_READ_MACROS. - Eliminated all PNG_USELESS_TESTS and PNG_CORRECT_PALETTE_SUPPORTED code. - Synced contrib directory and configure files with libpng-1.2.30beta06. - Eliminated no-longer-used pngdefs.h (but it's still built in the makefiles) - Relocated a misplaced "#endif /* PNG_NO_WRITE_FILTER */" in pngwutil.c - -Version 1.4.0beta26 [August 4, 2008] - Removed png_push_have_buffer() function in pngpread.c. It increased the - compiled library size slightly. - Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta) - Declared png_ptr "volatile" in pngread.c and pngwrite.c to avoid warnings. - Updated contrib/visupng/cexcept.h to version 2.0.1 - Added PNG_LITERAL_CHARACTER macros for #, [, and ]. - -Version 1.4.0beta27 [August 5, 2008] - Revised usage of PNG_LITERAL_SHARP in pngerror.c. - Moved newline character from individual png_debug messages into the - png_debug macros. - Allow user to #define their own png_debug, png_debug1, and png_debug2. - -Version 1.4.0beta28 [August 5, 2008] - Revised usage of PNG_LITERAL_SHARP in pngerror.c. - Added PNG_STRING_NEWLINE macro - -Version 1.4.0beta29 [August 9, 2008] - Revised usage of PNG_STRING_NEWLINE to work on non-ISO compilers. - Added PNG_STRING_COPYRIGHT macro. - Added non-ISO versions of png_debug macros. - -Version 1.4.0beta30 [August 14, 2008] - Added premultiplied alpha feature (Volker Wiendl). - -Version 1.4.0beta31 [August 18, 2008] - Moved png_set_premultiply_alpha from pngtrans.c to pngrtran.c - Removed extra crc check at the end of png_handle_cHRM(). Bug introduced - in libpng-1.4.0beta20. - -Version 1.4.0beta32 [August 19, 2008] - Added PNG_WRITE_FLUSH_SUPPORTED block around new png_flush() call. - Revised PNG_NO_STDIO version of png_write_flush() - -Version 1.4.0beta33 [August 20, 2008] - Added png_get|set_chunk_cache_max() to limit the total number of sPLT, - text, and unknown chunks that can be stored. - -Version 1.4.0beta34 [September 6, 2008] - Shortened tIME_string to 29 bytes in pngtest.c - Fixed off-by-one error introduced in png_push_read_zTXt() function in - libpng-1.2.30beta04/pngpread.c (Harald van Dijk) - -Version 1.4.0beta35 [October 6, 2008] - Changed "trans_values" to "trans_color". - Changed so-number from 0 to 14. Some OS do not like 0. - Revised makefile.darwin to fix shared library numbering. - Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8() - in example.c (debian bug report) - -Version 1.4.0beta36 [October 25, 2008] - Sync with tEXt vulnerability fix in libpng-1.2.33rc02. - -Version 1.4.0beta37 [November 13, 2008] - Added png_check_cHRM in png.c and moved checking from pngget.c, pngrutil.c, - and pngwrite.c - -Version 1.4.0beta38 [November 22, 2008] - Added check for zero-area RGB cHRM triangle in png_check_cHRM() and - png_check_cHRM_fixed(). - -Version 1.4.0beta39 [November 23, 2008] - Revised png_warning() to write its message on standard output by default - when warning_fn is NULL. - -Version 1.4.0beta40 [November 24, 2008] - Eliminated png_check_cHRM(). Instead, always use png_check_cHRM_fixed(). - In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant - check for all-zero coordinates that is detected by the triangle check. - -Version 1.4.0beta41 [November 26, 2008] - Fixed string vs pointer-to-string error in png_check_keyword(). - Rearranged test expressions in png_check_cHRM_fixed() to avoid internal - overflows. - Added PNG_NO_CHECK_cHRM conditional. - -Version 1.4.0beta42, 43 [December 1, 2008] - Merge png_debug with version 1.2.34beta04. - -Version 1.4.0beta44 [December 6, 2008] - Removed redundant check for key==NULL before calling png_check_keyword() - to ensure that new_key gets initialized and removed extra warning - (Merge with version 1.2.34beta05 -- Arvan Pritchard). - -Version 1.4.0beta45 [December 9, 2008] - In png_write_png(), respect the placement of the filler bytes in an earlier - call to png_set_filler() (Jim Barry). - -Version 1.4.0beta46 [December 10, 2008] - Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and - PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated - PNG_TRANSFORM_STRIP_FILLER (Jim Barry). - -Version 1.4.0beta47 [December 15, 2008] - Support for dithering was disabled by default, because it has never - been well tested and doesn't work very well. The code has not - been removed, however, and can be enabled by building libpng with - PNG_READ_DITHER_SUPPORTED defined. - -Version 1.4.0beta48 [February 14, 2009] - Added new exported function png_calloc(). - Combined several instances of png_malloc(); png_memset() into png_calloc(). - Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24 - but was never defined. - -Version 1.4.0beta49 [February 28, 2009] - Added png_fileno() macro to pngconf.h, used in pngwio.c - Corrected order of #ifdef's in png_debug definition in png.h - Fixed bug introduced in libpng-1.4.0beta48 with the memset arguments - for pcal_params. - Fixed order of #ifdef directives in the png_debug defines in png.h - (bug introduced in libpng-1.2.34/1.4.0beta29). - Revised comments in png_set_read_fn() and png_set_write_fn(). - -Version 1.4.0beta50 [March 18, 2009] - Use png_calloc() instead of png_malloc() to allocate big_row_buf when - reading an interlaced file, to avoid a possible UMR. - Undid revision of PNG_NO_STDIO version of png_write_flush(). Users - having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined - or supply their own flush_fn() replacement. - Revised libpng*.txt and png.h documentation about use of png_write_flush() - and png_set_write_fn(). - Removed fflush() from pngtest.c. - Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h - -Version 1.4.0beta51 [March 21, 2009] - Removed new png_fileno() macro from pngconf.h . - -Version 1.4.0beta52 [March 27, 2009] - Relocated png_do_chop() ahead of building gamma tables in pngrtran.c - This avoids building 16-bit gamma tables unnecessarily. - Removed fflush() from pngtest.c. - Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h - Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt - -Version 1.4.0beta53 [April 1, 2009] - Removed some remaining MMX macros from pngpriv.h - Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles) - -Version 1.4.0beta54 [April 13, 2009] - Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow - application code writers to bypass the check for multiple inclusion - of setjmp.h when they know that it is safe to ignore the situation. - Eliminated internal use of setjmp() in pngread.c and pngwrite.c - Reordered ancillary chunks in pngtest.png to be the same as what - pngtest now produces, and made some cosmetic changes to pngtest output. - Eliminated deprecated png_read_init_3() and png_write_init_3() functions. - -Version 1.4.0beta55 [April 15, 2009] - Simplified error handling in pngread.c and pngwrite.c by putting - the new png_read_cleanup() and png_write_cleanup() functions inline. - -Version 1.4.0beta56 [April 25, 2009] - Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress - "shadowed declaration" warning from gcc-4.3.3. - Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration" - warning about a global "gamma" variable in math.h on some platforms. - -Version 1.4.0beta57 [May 2, 2009] - Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24 - but was never defined (again). - Rebuilt configure scripts with autoconf-2.63 instead of 2.62 - Removed pngprefs.h and MMX from makefiles - -Version 1.4.0beta58 [May 14, 2009] - Changed pngw32.def to pngwin.def in makefile.mingw (typo was introduced - in beta57). - Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri) - -Version 1.4.0beta59 [May 15, 2009] - Reformated sources in libpng style (3-space intentation, comment format) - Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG) - Added sections about the git repository and our coding style to the - documentation - Relocated misplaced #endif in pngwrite.c, sCAL chunk handler. - -Version 1.4.0beta60 [May 19, 2009] - Conditionally compile png_read_finish_row() which is not used by - progressive readers. - Added contrib/pngminim/preader to demonstrate building minimal progressive - decoder, based on contrib/gregbook with embedded libpng and zlib. - -Version 1.4.0beta61 [May 20, 2009] - In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there - is only one makefile in those directories, and revised the README files - accordingly. - More reformatting of comments, mostly to capitalize sentences. - -Version 1.4.0beta62 [June 2, 2009] - Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h - and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h - Reformatted several remaining "else statement" into two lines. - Added a section to the libpng documentation about using png_get_io_ptr() - in configure scripts to detect the presence of libpng. - -Version 1.4.0beta63 [June 15, 2009] - Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR() - multiple times and to specify the sample order in the tRNS chunk, - because the ISO PNG specification has a typo in the tRNS table. - Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to - PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism - available for ignoring known chunks even when not saving unknown chunks. - Adopted preference for consistent use of "#ifdef" and "#ifndef" versus - "#if defined()" and "if !defined()" where possible. - -Version 1.4.0beta64 [June 24, 2009] - Eliminated PNG_LEGACY_SUPPORTED code. - Moved the various unknown chunk macro definitions outside of the - PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks. - -Version 1.4.0beta65 [June 26, 2009] - Added a reference to the libpng license in each file. - -Version 1.4.0beta66 [June 27, 2009] - Refer to the libpng license instead of the libpng license in each file. - -Version 1.4.0beta67 [July 6, 2009] - Relocated INVERT_ALPHA within png_read_png() and png_write_png(). - Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB. - Added an "xcode" project to the projects directory (Alam Arias). - -Version 1.4.0beta68 [July 19, 2009] - Avoid some tests in filter selection in pngwutil.c - -Version 1.4.0beta69 [July 25, 2009] - Simplified the new filter-selection test. This runs faster in the - common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases. - Removed extraneous declaration from the new call to png_read_gray_to_rgb() - (bug introduced in libpng-1.4.0beta67). - Fixed up xcode project (Alam Arias) - Added a prototype for png_64bit_product() in png.c - -Version 1.4.0beta70 [July 27, 2009] - Avoid a possible NULL dereference in debug build, in png_set_text_2(). - (bug introduced in libpng-0.95, discovered by Evan Rouault) - -Version 1.4.0beta71 [July 29, 2009] - Rebuilt configure scripts with autoconf-2.64. - -Version 1.4.0beta72 [August 1, 2009] - Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec - from . - -Version 1.4.0beta73 [August 1, 2009] - Reject attempt to write iCCP chunk with negative embedded profile length - (JD Chen) (CVE-2009-5063). - -Version 1.4.0beta74 [August 8, 2009] - Changed png_ptr and info_ptr member "trans" to "trans_alpha". - -Version 1.4.0beta75 [August 21, 2009] - Removed an extra png_debug() recently added to png_write_find_filter(). - Fixed incorrect #ifdef in pngset.c regarding unknown chunk support. - -Version 1.4.0beta76 [August 22, 2009] - Moved an incorrectly located test in png_read_row() in pngread.c - -Version 1.4.0beta77 [August 27, 2009] - Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt, - and the "noconfig" files from the distribution. - Moved CMakeLists.txt from scripts into the main libpng directory. - Various bugfixes and improvements to CMakeLists.txt (Philip Lowman) - -Version 1.4.0beta78 [August 31, 2009] - Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h - Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros. - Use png_malloc plus a loop instead of png_calloc() to initialize - row_pointers in png_read_png(). - -Version 1.4.0beta79 [September 1, 2009] - Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays. - Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc(). - -Version 1.4.0beta80 [September 17, 2009] - Removed scripts/libpng.icc - Changed typecast of filler from png_byte to png_uint_16 in png_set_filler(). - (Dennis Gustafsson) - Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ") - -Version 1.4.0beta81 [September 23, 2009] - Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h - Expanded TAB characters in pngrtran.c - Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid - compiler complaints about doubly declaring things "const". - Changed all "#if [!]defined(X)" to "if[n]def X" where possible. - Eliminated unused png_ptr->row_buf_size - -Version 1.4.0beta82 [September 25, 2009] - Moved redundant IHDR checking into new png_check_IHDR() in png.c - and report all errors found in the IHDR data. - Eliminated useless call to png_check_cHRM() from pngset.c - -Version 1.4.0beta83 [September 25, 2009] - Revised png_check_IHDR() to eliminate bogus complaint about filter_type. - -Version 1.4.0beta84 [September 30, 2009] - Fixed some inconsistent indentation in pngconf.h - Revised png_check_IHDR() to add a test for width variable less than 32-bit. - -Version 1.4.0beta85 [October 1, 2009] - Revised png_check_IHDR() again, to check info_ptr members instead of - the contents of the returned parameters. - -Version 1.4.0beta86 [October 9, 2009] - Updated the "xcode" project (Alam Arias). - Eliminated a shadowed declaration of "pp" in png_handle_sPLT(). - -Version 1.4.0rc01 [October 19, 2009] - Trivial cosmetic changes. - -Version 1.4.0beta87 [October 30, 2009] - Moved version 1.4.0 back into beta. - -Version 1.4.0beta88 [October 30, 2009] - Revised libpng*.txt section about differences between 1.2.x and 1.4.0 - because most of the new features have now been ported back to 1.2.41 - -Version 1.4.0beta89 [November 1, 2009] - More bugfixes and improvements to CMakeLists.txt (Philip Lowman) - Removed a harmless extra png_set_invert_alpha() from pngwrite.c - Apply png_user_chunk_cache_max within png_decompress_chunk(). - Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate. - -Version 1.4.0beta90 [November 2, 2009] - Removed all remaining WIN32_WCE #ifdefs except those involving the - time.h "tm" structure - -Version 1.4.0beta91 [November 3, 2009] - Updated scripts/pngw32.def and projects/wince/png32ce.def - Copied projects/wince/png32ce.def to the scripts directory. - Added scripts/makefile.wce - Patched ltmain.sh for wince support. - Added PNG_CONVERT_tIME_SUPPORTED macro. - -Version 1.4.0beta92 [November 4, 2009] - Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED - Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED - Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead - of differences from 1.2.41 to 1.4.0) - -Version 1.4.0beta93 [November 7, 2009] - Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and - PNG_ALLOCATED macros to detect deprecated direct access to the - png_struct or info_struct members and other deprecated usage in - applications (John Bowler). - Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS, - to prevent warnings about direct access to png structs by libpng - functions while building libpng. They need to be tested, especially - those using compilers other than gcc. - Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG". - They should work but still need to be updated to remove - references to pnggccrd.c or pngvcrd.c and ASM building. - Added README.txt to the beos, cbuilder5, netware, and xcode projects warning - that they need to be updated, to remove references to pnggccrd.c and - pngvcrd.c and to depend on pngpriv.h - Removed three direct references to read_info_ptr members in pngtest.c - that were detected by the new PNG_DEPSTRUCT macro. - Moved the png_debug macro definitions and the png_read_destroy(), - png_write_destroy() and png_far_to_near() prototypes from png.h - to pngpriv.h (John Bowler) - Moved the synopsis lines for png_read_destroy(), png_write_destroy() - png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3. - -Version 1.4.0beta94 [November 9, 2009] - Removed the obsolete, unused pnggccrd.c and pngvcrd.c files. - Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions. - Removed dependency of pngtest.o on pngpriv.h in the makefiles. - Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined. - -Version 1.4.0beta95 [November 10, 2009] - Changed png_check_sig() to !png_sig_cmp() in contrib programs. - Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile - Changed png_check_sig() to !png_sig_cmp() in contrib programs. - Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c - Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c - Added dependency on pngpriv.h in contrib/pngminim/*/makefile - -Version 1.4.0beta96 [November 12, 2009] - Renamed scripts/makefile.wce to scripts/makefile.cegcc - Revised Makefile.am to use libpng.sys while building libpng.so - so that only PNG_EXPORT functions are exported. - Removed the deprecated png_check_sig() function/macro. - Removed recently removed function names from scripts/*.def - Revised pngtest.png to put chunks in the same order written by pngtest - (evidently the same change made in libpng-1.0beta54 was lost). - Added PNG_PRIVATE macro definition in pngconf.h for possible future use. - -Version 1.4.0beta97 [November 13, 2009] - Restored pngtest.png to the libpng-1.4.0beta7 version. - Removed projects/beos and netware.txt; no one seems to be supporting them. - Revised Makefile.in - -Version 1.4.0beta98 [November 13, 2009] - Added the "xcode" project to zip distributions, - Fixed a typo in scripts/pngwin.def introduced in beta97. - -Version 1.4.0beta99 [November 14, 2009] - Moved libpng-config.in and libpng.pc-configure.in out of the scripts - directory, to libpng-config.in and libpng-pc.in, respectively, and - modified Makefile.am and configure.ac accordingly. Now "configure" - needs nothing from the "scripts" directory. - Avoid redefining PNG_CONST in pngconf.h - -Version 1.4.0beta100 [November 14, 2009] - Removed ASM builds from projects/visualc6 and projects/visualc71 - Removed scripts/makefile.nommx and makefile.vcawin32 - Revised CMakeLists.txt to account for new location of libpng-config.in - and libpng-pc.in - Updated INSTALL to reflect removal and relocation of files. - -Version 1.4.0beta101 [November 14, 2009] - Restored the binary files (*.jpg, *.png, some project files) that were - accidentally deleted from the zip and 7z distributions when the xcode - project was added. - -Version 1.4.0beta102 [November 18, 2009] - Added libpng-config.in and libpng-pc.in to the zip and 7z distributions. - Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100. - Moved descriptions of makefiles and other scripts out of INSTALL into - scripts/README.txt - Updated the copyright year in scripts/pngwin.rc from 2006 to 2009. - -Version 1.4.0beta103 [November 21, 2009] - Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt - Align row_buf on 16-byte boundary in memory. - Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call - to png_flush() after png_write_IEND(). See 1.4.0beta32, 1.4.0beta50 - changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES. Someone - needs this feature. - Make the 'png_jmpbuf' macro expand to a call that records the correct - longjmp function as well as returning a pointer to the setjmp - jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'. - (John Bowler) - -Version 1.4.0beta104 [November 22, 2009] - Removed png_longjmp_ptr from scripts/*.def and libpng.3 - Rebuilt configure scripts with autoconf-2.65 - -Version 1.4.0beta105 [November 25, 2009] - Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535() - to accomplish alpha premultiplication when - PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined. - Changed "/255" to "/255.0" in background calculations to make it clear - that the 255 is used as a double. - -Version 1.4.0beta106 [November 27, 2009] - Removed premultiplied alpha feature. - -Version 1.4.0beta107 [December 4, 2009] - Updated README - Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files. - Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects. - Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco - to put png.h and pngconf.h in $prefix/include, like the other scripts, - instead of in $prefix/include/libpng. Also revised makefile.sco - to put them in $prefix/include/libpng15 instead of in - $prefix/include/libpng/libpng15. - -Version 1.4.0beta108 [December 11, 2009] - Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile - Relocated png_do_chop() to its original position in pngrtran.c; the - change in version 1.2.41beta08 caused transparency to be handled wrong - in some 16-bit datastreams (Yusaku Sugai). - -Version 1.4.0beta109 [December 13, 2009] - Added "bit_depth" parameter to the private png_build_gamma_table() function. - Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the - PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit - tables. - -Version 1.4.0rc02 [December 20, 2009] - Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c - -Version 1.4.0rc03 [December 22, 2009] - Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt - (revising the change in 1.4.0beta99) - -Version 1.4.0rc04 [December 25, 2009] - Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED - in pngset.c to be consistent with other changes in version 1.2.38. - -Version 1.4.0rc05 [December 25, 2009] - Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and - Makefile.in to be consistent with changes in libpng-1.4.0rc03 - -Version 1.4.0rc06 [December 29, 2009] - Reverted the gamma_table changes from libpng-1.4.0beta109. - Fixed some indentation errors. - -Version 1.4.0rc07 [January 1, 2010] - Revised libpng*.txt and libpng.3 about 1.2.x->1.4.x differences. - Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c - Update copyright year to 2010. - -Version 1.4.0rc08 [January 2, 2010] - Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr - in pngtest.c - -Version 1.4.0 [January 3, 2010] - No changes. - -Version 1.4.1beta01 [January 8, 2010] - Updated CMakeLists.txt for consistent indentation and to avoid an - unclosed if-statement warning (Philip Lowman). - Revised Makefile.am and Makefile.in to remove references to Y2KINFO, - KNOWNBUG, and libpng.la (Robert Schwebel). - Revised the makefiles to install the same files and symbolic - links as configure, except for libpng.la and libpng14.la. - Make png_set|get_compression_buffer_size() available even when - PNG_WRITE_SUPPORTED is not enabled. - Revised Makefile.am and Makefile.in to simplify their maintenance. - Revised scripts/makefile.linux to install a link to libpng14.so.14.1 - -Version 1.4.1beta02 [January 9, 2010] - Revised the rest of the makefiles to install a link to libpng14.so.14.1 - -Version 1.4.1beta03 [January 10, 2010] - Removed png_set_premultiply_alpha() from scripts/*.def - -Version 1.4.1rc01 [January 16, 2010] - No changes. - -Version 1.4.1beta04 [January 23, 2010] - Revised png_decompress_chunk() to improve speed and memory usage when - decoding large chunks. - Added png_set|get_chunk_malloc_max() functions. - -Version 1.4.1beta05 [January 26, 2010] - Relocated "int k" declaration in pngtest.c to minimize its scope. - -Version 1.4.1beta06 [January 28, 2010] - Revised png_decompress_chunk() to use a two-pass method suggested by - John Bowler. - -Version 1.4.1beta07 [February 6, 2010] - Folded some long lines in the source files. - Added defineable PNG_USER_CHUNK_CACHE_MAX, PNG_USER_CHUNK_MALLOC_MAX, - and a PNG_USER_LIMITS_SUPPORTED flag. - Eliminated use of png_ptr->irowbytes and reused the slot in png_ptr as - png_ptr->png_user_chunk_malloc_max. - Revised png_push_save_buffer() to do fewer but larger png_malloc() calls. - -Version 1.4.1beta08 [February 6, 2010] - Minor cleanup and updating of dates and copyright year. - -Version 1.5.0beta01 [February 7, 2010] - Moved declaration of png_struct into private pngstruct.h and png_info - into pnginfo.h - -Version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010] - Reverted to original png_push_save_buffer() code. - -Version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010] - Return allocated "old_buffer" in png_push_save_buffer() before - calling png_error(), to avoid a potential memory leak. - Updated configure script to use SO number 15. - -Version 1.5.0beta04 [February 9, 2010] - Removed malformed "incomplete struct declaration" of png_info from png.h - -Version 1.5.0beta05 [February 12, 2010] - Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the - linewrapping that it entailed. - Revised comments in pngstruct.h and pnginfo.h and added pointers to - the libpng license. - Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES - Removed the cbuilder5 project, which has not been updated to 1.4.0. - -Version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010] - Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke - Nishikawa) - -Version 1.5.0beta07 [omitted] - -Version 1.5.0beta08 [February 19, 2010] - Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED - wherever png_snprintf() is used to construct error and warning messages. - Noted in scripts/makefile.mingw that it expects to be run under MSYS. - Removed obsolete unused MMX-querying support from contrib/gregbook - Added exported png_longjmp() function. - Removed the AIX redefinition of jmpbuf in png.h - Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt - when building on AIX. - -Version 1.5.0beta09 [February 19, 2010] - Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt. - Changed the name of png_ptr->jmpbuf to png_ptr->png_jmpbuf in pngstruct.h - -Version 1.5.0beta10 [February 25, 2010] - Removed unused gzio.c from contrib/pngminim gather and makefile scripts - Removed replacement error handlers from contrib/gregbook. Because of - the new png_longjmp() function they are no longer needed. - -Version 1.5.0beta11 [March 6, 2010] - Removed checking for already-included setjmp.h from pngconf.h - Fixed inconsistent indentations and made numerous cosmetic changes. - Revised the "SEE ALSO" style of libpng.3, libpngpf.3, and png.5 - -Version 1.5.0beta12 [March 9, 2010] - Moved "#include png.h" inside pngpriv.h and removed "#include png.h" from - the source files, along with "#define PNG_EXPOSE_INTERNAL_STRUCTURES" - and "#define PNG_NO_PEDANTIC_WARNINGS" (John Bowler). - Created new pngdebug.h and moved debug definitions there. - -Version 1.5.0beta13 [March 10, 2010] - Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice. - Revise the "#ifdef" blocks in png_inflate() so it will compile when neither - PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED - is defined. - Removed unused png_measure_compressed_chunk() from pngpriv.h and libpngpf.3 - Moved the 'config.h' support from pngconf.h to pngpriv.h - Removed PNGAPI from the png_longjmp_ptr typedef. - Eliminated dependence of pngtest.c on the private pngdebug.h file. - Make all png_debug macros into *unterminated* statements or - expressions (i.e. a trailing ';' must always be added) and correct - the format statements in various png_debug messages. - -Version 1.5.0beta14 [March 14, 2010] - Removed direct access to png_ptr->io_ptr from the Windows code in pngtest.c - Revised Makefile.am to account for recent additions and replacements. - Corrected CE and OS/2 DEF files (scripts/png*def) for symbols removed and - added ordinal numbers to the Windows DEF file and corrected the duplicated - ordinal numbers on CE symbols that are commented out. - Added back in export symbols that can be present in the Windows build but - are disabled by default. - PNG_EXPORT changed to include an 'ordinal' field for DEF file generation. - PNG_CALLBACK added to make callback definitions uniform. PNGAPI split - into PNGCAPI (base C form), PNGAPI (exports) and PNGCBAPI (callbacks), - and appropriate changes made to all files. Cygwin builds re-hinged to - allow procedure call standard changes and to remove the need for the DEF - file (fixes build on Cygwin). - Enabled 'attribute' warnings that are relevant to library APIs and callbacks. - Changed rules for generation of the various symbol files and added a new - rule for a DEF file (which is also added to the distribution). - Updated the symbol file generation to stop it adding spurious spaces - to EOL (coming from preprocessor macro expansion). Added a facility - to join tokens in the output and rewrite *.dfn to use this. - Eliminated scripts/*.def in favor of libpng.def; updated projects/visualc71 - and removed scripts/makefile.cygwin. - Made PNG_BUILD_DLL safe: it can be set whenever a DLL is being built. - Removed the include of sys/types.h - apparently unnecessary now on the - platforms on which it happened (all but Mac OS and RISC OS). - Moved the Mac OS test into pngpriv.h (the only place it is used.) - -Version 1.5.0beta15 [March 17, 2010] - Added symbols.chk target to Makefile.am to validate the symbols in png.h - against the new DEF file scripts/symbols.def. - Changed the default DEF file back to pngwin.def. - Removed makefile.mingw. - Eliminated PNG_NO_EXTERN and PNG_ALL_EXTERN - -Version 1.5.0beta16 [April 1, 2010] - Make png_text_struct independent of PNG_iTXt_SUPPORTED, so that - fields are initialized in all configurations. The READ/WRITE - macros (PNG_(READ|WRITE)_iTXt_SUPPORTED) still function as - before to disable code to actually read or write iTXt chunks - and iTXt_SUPPORTED can be used to detect presence of either - read or write support (but it is probably better to check for - the one actually required - read or write.) - Combined multiple png_warning() calls for a single error. - Restored the macro definition of png_check_sig(). - -Version 1.5.0beta17 [April 17, 2010] - Added some "(long)" typecasts to printf calls in png_handle_cHRM(). - Documented the fact that png_set_dither() was disabled since libpng-1.4.0. - Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect - more accurately what it actually does. At the same time, renamed - the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to - PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS. - Added some "(long)" typecasts to printf calls in png_handle_cHRM(). - Freeze build-time only configuration in the build. - In all prior versions of libpng most configuration options - controlled by compiler #defines had to be repeated by the - application code that used libpng. This patch changes this - so that compilation options that can only be changed at build - time are frozen in the build. Options that are compiler - dependent (and those that are system dependent) are evaluated - each time - pngconf.h holds these. Options that can be changed - per-file in the application are in png.h. Frozen options are - in the new installed header file pnglibconf.h (John Bowler) - Removed the xcode project because it has not been updated to work - with libpng-1.5.0. - Removed the ability to include optional pngusr.h - -Version 1.5.0beta18 [April 17, 2010] - Restored the ability to include optional pngusr.h - Moved replacements for png_error() and png_warning() from the - contrib/pngminim project to pngerror.c, for use when warnings or - errors are disabled via PNG_NO_WARN or PNG_NO_ERROR_TEXT, to avoid - storing unneeded error/warning text. - Updated contrib/pngminim project to work with the new pnglibconf.h - Added some PNG_NO_* defines to contrib/pngminim/*/pngusr.h to save space. - -Version 1.5.0beta19 [April 24, 2010] - Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the functions - to read and write ints to be disabled independently of PNG_USE_READ_MACROS, - which allows libpng to be built with the functions even though the default - is to use the macros - this allows applications to choose at app build - time whether or not to use macros (previously impossible because the - functions weren't in the default build.) - Changed Windows calling convention back to __cdecl for API functions. - For Windows/x86 platforms only: - __stdcall is no longer needed for Visual Basic, so libpng-1.5.0 uses - __cdecl throughout (both API functions and callbacks) on Windows/x86 - platforms. - Replaced visualc6 and visualc71 projects with new vstudio project - Relaxed the overly-restrictive permissions of some files. - -Version 1.5.0beta20 [April 24, 2010] - Relaxed more overly-restrictive permissions of some files. - -Version 1.5.0beta21 [April 27, 2010] - Removed some unwanted binary bytes and changed CRLF to NEWLINE in the new - vstudio project files, and some trivial editing of some files in the - scripts directory. - Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in - contrib/pngminim/decoder/pngusr.h to make a smaller decoder application. - -Version 1.5.0beta22 [April 28, 2010] - Fixed dependencies of GET_INT_32 - it does not require READ_INT_FUNCTIONS - because it has a macro equivalent. - Improved the options.awk script; added an "everything off" option. - Revised contrib/pngminim to use the "everything off" option in pngusr.dfa. - -Version 1.5.0beta23 [April 29, 2010] - Corrected PNG_REMOVED macro to take five arguments. - The macro was documented with two arguments (name,ordinal), however - the symbol checking .dfn files assumed five arguments. The five - argument form seems more useful so it is changed to that. - Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED - in gregbook/readpng2.c - Corrected protection of png_get_user_transform_ptr. The API declaration in - png.h is removed if both READ and WRITE USER_TRANSFORM are turned off - but was left defined in pngtrans.c - Added logunsupported=1 to cause pnglibconf.h to document disabled options. - This makes the installed pnglibconf.h more readable but causes no - other change. The intention is that users of libpng will find it - easier to understand if an API they need is missing. - Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined. - Removed dummy_inflate.c from contrib/pngminim/encoder - Removed contrib/pngminim/*/gather.sh; gathering is now done in the makefile. - -Version 1.5.0beta24 [May 7, 2010] - Use bitwise "&" instead of arithmetic mod in pngrutil.c calculation of the - offset of the png_ptr->rowbuf pointer into png_ptr->big_row_buf. - Added more blank lines for readability. - -Version 1.5.0beta25 [June 18, 2010] - In pngpread.c: png_push_have_row() add check for new_row > height - Removed the now-redundant check for out-of-bounds new_row from example.c - -Version 1.5.0beta26 [June 18, 2010] - In pngpread.c: png_push_process_row() add check for too many rows. - -Version 1.5.0beta27 [June 18, 2010] - Removed the check added in beta25 as it is now redundant. - -Version 1.5.0beta28 [June 20, 2010] - Rewrote png_process_IDAT_data to consistently treat extra data as warnings - and handle end conditions more cleanly. - Removed the new (beta26) check in png_push_process_row(). - -Version 1.5.0beta29 [June 21, 2010] - Revised scripts/options.awk to work on Sunos (but still doesn't work) - Added comment to options.awk and contrib/pngminim/*/makefile to try nawk. - -Version 1.5.0beta30 [June 22, 2010] - Stop memory leak when reading a malformed sCAL chunk. - -Version 1.5.0beta31 [June 26, 2010] - Revised pngpread.c patch of beta28 to avoid an endless loop. - Removed some trailing blanks. - -Version 1.5.0beta32 [June 26, 2010] - Removed leftover scripts/options.patch and scripts/options.rej - -Version 1.5.0beta33 [July 6, 3010] - Made FIXED and FLOATING options consistent in the APIs they enable and - disable. Corrected scripts/options.awk to handle both command line - options and options specified in the .dfa files. - Changed char *msg to PNG_CONST char *msg in pngrutil.c - Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or - floating point APIs, but not both. - Reversed patch to remove error handler when the jmp_buf is stored in the - main program structure, not the png_struct. - The error handler is needed because the default handler in libpng will - always use the jmp_buf in the library control structure; this is never - set. The gregbook code is a useful example because, even though it - uses setjmp/longjmp, it shows how error handling can be implemented - using control mechanisms not directly supported by libpng. The - technique will work correctly with mechanisms such as Microsoft - Structure Exceptions or C++ exceptions (compiler willing - note that gcc - does not by default support interworking of C and C++ error handling.) - Reverted changes to call png_longjmp in contrib/gregbook where it is not - appropriate. If mainprog->jmpbuf is used by setjmp, then png_longjmp - cannot be used. - Changed "extern PNG_EXPORT" to "PNG_EXPORT" in png.h (Jan Nijtmans) - Changed "extern" to "PNG_EXTERN" in pngpriv.h (except for the 'extern "C" {') - -Version 1.5.0beta34 [July 12, 2010] - Put #ifndef PNG_EXTERN, #endif around the define PNG_EXTERN in pngpriv.h - -Version 1.5.0beta35 [July 24, 2010] - Removed some newly-added TAB characters. - Added -DNO_PNG_SNPRINTF to CFLAGS in scripts/makefile.dj2 - Moved the definition of png_snprintf() outside of the enclosing - #ifdef blocks in pngconf.h - -Version 1.5.0beta36 [July 29, 2010] - Patches by John Bowler: - Fixed point APIs are now supported throughout (no missing APIs). - Internal fixed point arithmetic support exists for all internal floating - point operations. - sCAL validates the floating point strings it is passed. - Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2 - Two new APIs exist to get the number of passes without turning on the - PNG_INTERLACE transform and to get the number of rows in the current - pass. - A new test program, pngvalid.c, validates the gamma code. - Errors in the 16-bit gamma correction (overflows) have been corrected. - cHRM chunk testing is done consistently (previously the floating point - API bypassed it, because the test really didn't work on FP, now the test - is performed on the actual values to be stored in the PNG file so it - works in the FP case too.) - Most floating point APIs now simply call the fixed point APIs after - converting the values to the fixed point form used in the PNG file. - The standard headers no longer include zlib.h, which is currently only - required for pngstruct.h and can therefore be internal. - Revised png_get_int_32 to undo the PNG two's complement representation of - negative numbers. - -Version 1.5.0beta37 [July 30, 2010] - Added a typecast in png_get_int_32() in png.h and pngrutil.h to avoid - a compiler warning. - Replaced oFFs 0,0 with oFFs -10,20 in pngtest.png - -Version 1.5.0beta38 [July 31, 2010] - Implemented remaining "_fixed" functions. - Corrected a number of recently introduced warnings mostly resulting from - safe but uncast assignments to shorter integers. Also added a zlib - VStudio release library project because the latest zlib Official Windows - build does not include such a thing. - Revised png_get_int_16() to be similar to png_get_int_32(). - Restored projects/visualc71. - -Version 1.5.0beta39 [August 2, 2010] - VisualC/GCC warning fixes, VisualC build fixes - The changes include support for function attributes in VC in addition to - those already present in GCC - necessary because without these some - warnings are unavoidable. Fixes include signed/unsigned fixes in - pngvalid and checks with gcc -Wall -Wextra -Wunused. - VC requires function attributes on function definitions as well as - declarations, PNG_FUNCTION has been added to enable this and the - relevant function definitions changed. - -Version 1.5.0beta40 [August 6, 2010] - Correct use of _WINDOWS_ in pngconf.h - Removed png_mem_ #defines; they are no longer used. - Added the sRGB chunk to pngtest.png - -Version 1.5.0beta41 [August 11, 2010] - Added the cHRM chunk to pngtest.png - Don't try to use version-script with cygwin/mingw. - Revised contrib/gregbook to work under cygwin/mingw. - -Version 1.5.0beta42 [August 18, 2010] - Add .dll.a to the list of extensions to be symlinked by Makefile.am (Yaakov) - Made all API functions that have const arguments and constant string - literal pointers declare them (John Bowler). - -Version 1.5.0beta43 [August 20, 2010] - Removed spurious tabs, shorten long lines (no source change) - Also added scripts/chkfmt to validate the format of all the files that can - reasonably be validated (it is suggested to run "make distclean" before - checking, because some machine generated files have long lines.) - Reformatted the CHANGES file to be more consistent throughout. - Made changes to address various issues identified by GCC, mostly - signed/unsigned and shortening problems on assignment but also a few - difficult to optimize (for GCC) loops. - Fixed non-GCC fixed point builds. In png.c a declaration was misplaced - in an earlier update. Fixed to declare the auto variables at the head. - Use cexcept.h in pngvalid.c. - -Version 1.5.0beta44 [August 24, 2010] - Updated CMakeLists.txt to use CMAKE_INSTALL_LIBDIR variable; useful for - installing libpng in /usr/lib64 (Funda Wang). - Revised CMakeLists.txt to put the man pages in share/man/man* not man/man* - Revised CMakeLists.txt to make symlinks instead of copies when installing. - Changed PNG_LIB_NAME from pngNN to libpngNN in CMakeLists.txt (Philip Lowman) - Implemented memory checks within pngvalid - Reformatted/rearranged pngvalid.c to assist use of progressive reader. - Check interlaced images in pngvalid - Clarified pngusr.h comments in pnglibconf.dfa - Simplified the pngvalid error-handling code now that cexcept.h is in place. - Implemented progressive reader in pngvalid.c for standard tests - Implemented progressive read in pngvalid.c gamma tests - Turn on progressive reader in pngvalid.c by default and tidy code. - -Version 1.5.0beta45 [August 26, 2010] - Added an explicit make step to projects/vstudio for pnglibconf.h - Also corrected zlib.vcxproj into which Visual Studio had introduced - what it calls an "authoring error". The change to make pnglibconf.h - simply copies the file; in the future it may actually generate the - file from scripts/pnglibconf.dfa as the other build systems do. - Changed pngvalid to work when floating point APIs are disabled - Renamed the prebuilt scripts/pnglibconf.h to scripts/pnglibconf.h.prebuilt - Supply default values for PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX - in pngpriv.h in case the user neglected to define them in their pngusr.h - -Version 1.5.0beta46 [August 28, 2010] - Added new private header files to libpng_sources in CMakeLists.txt - Added PNG_READ_16BIT, PNG_WRITE_16BIT, and PNG_16BIT options. - Added reference to scripts/pnglibconf.h.prebuilt in the visualc71 project. - -Version 1.5.0beta47 [September 11, 2010] - Fixed a number of problems with 64-bit compilation reported by Visual - Studio 2010 (John Bowler). - -Version 1.5.0beta48 [October 4, 2010] - Updated CMakeLists.txt (Philip Lowman). - Revised autogen.sh to recognize and use $AUTOCONF, $AUTOMAKE, $AUTOHEADER, - $AUTOPOINT, $ACLOCAL and $LIBTOOLIZE - Fixed problem with symbols creation in Makefile.am which was assuming that - all versions of ccp write to standard output by default (Martin Banky). The - bug was introduced in libpng-1.2.9beta5. - Removed unused mkinstalldirs. - -Version 1.5.0beta49 [October 8, 2010] - Undid Makefile.am revision of 1.5.0beta48. - -Version 1.5.0beta50 [October 14, 2010] - Revised Makefile.in to account for mkinstalldirs being removed. - Added some "(unsigned long)" typecasts in printf statements in pngvalid.c. - Suppressed a compiler warning in png_handle_sPLT(). - Check for out-of-range text compression mode in png_set_text(). - -Version 1.5.0beta51 [October 15, 2010] - Changed embedded dates to "(PENDING RELEASE) in beta releases (and future - rc releases) to minimize the difference between releases. - -Version 1.5.0beta52 [October 16, 2010] - Restored some of the embedded dates (in png.h, png.c, documentation, etc.) - -Version 1.5.0beta53 [October 18, 2010] - Updated INSTALL to mention using "make maintainer-clean" and to remove - obsolete statement about a custom ltmain.sh - Disabled "color-tests" by default in Makefile.am so it will work with - automake versions earlier than 1.11.1 - Use document name "libpng-manual.txt" instead of "libpng-.txt" - to simplify version differences. - Removed obsolete remarks about setjmp handling from INSTALL. - Revised and renamed the typedef in png.h and png.c that was designed - to catch library and header mismatch. - -Version 1.5.0beta54 [November 10, 2010] - Require 48 bytes, not 64 bytes, for big_row_buf in overflow checks. - Used a consistent structure for the pngget.c functions. - -Version 1.5.0beta55 [November 21, 2010] - Revised png_get_uint_32, png_get_int_32, png_get_uint_16 (Cosmin) - Moved reading of file signature into png_read_sig (Cosmin) - Fixed atomicity of chunk header serialization (Cosmin) - Added test for io_state in pngtest.c (Cosmin) - Added "#!/bin/sh" at the top of contrib/pngminim/*/gather.sh scripts. - Changes to remove gcc warnings (John Bowler) - Certain optional gcc warning flags resulted in warnings in libpng code. - With these changes only -Wconversion and -Wcast-qual cannot be turned on. - Changes are trivial rearrangements of code. -Wconversion is not possible - for pngrutil.c (because of the widespread use of += et al on variables - smaller than (int) or (unsigned int)) and -Wcast-qual is not possible - with pngwio.c and pngwutil.c because the 'write' callback and zlib - compression both fail to declare their input buffers with 'const'. - -Version 1.5.0beta56 [December 7, 2010] - Added the private PNG_UNUSED() macro definition in pngpriv.h. - Added some commentary about PNG_EXPORT in png.h and pngconf.h - Revised PNG_EXPORT() macro and added PNG_EXPORTA() macro, with the - objective of simplifying and improving the cosmetic appearance of png.h. - Fixed some incorrect "=" macro names in pnglibconf.dfa - Included documentation of changes in 1.5.0 from 1.4.x in libpng-manual.txt - -Version 1.5.0beta57 [December 9, 2010] - Documented the pngvalid gamma error summary with additional comments and - print statements. - Improved missing symbol handling in checksym.awk; symbols missing in both - the old and new files can now be optionally ignored, treated as errors - or warnings. - Removed references to pngvcrd.c and pnggccrd.c from the vstudio project. - Updated "libpng14" to "libpng15" in the visualc71 project. - Enabled the strip16 tests in pngvalid.` - Don't display test results (except PASS/FAIL) when running "make test". - Instead put them in pngtest-log.txt - Added "--with-zprefix=" to configure.ac - Updated the prebuilt configuration files to autoconf version 2.68 - -Version 1.5.0beta58 [December 19, 2010] - Fixed interlace image handling and add test cases (John Bowler) - Fixed the clean rule in Makefile.am to remove pngtest-log.txt - Made minor changes to work around warnings in gcc 3.4 - -Version 1.5.0rc01 [December 27, 2010] - No changes. - -Version 1.5.0rc02 [December 27, 2010] - Eliminated references to the scripts/*.def files in project/visualc71. - -Version 1.5.0rc03 [December 28, 2010] - Eliminated scripts/*.def and revised Makefile.am accordingly - -Version 1.5.0rc04 [December 29, 2010] - Fixed bug in background transformation handling in pngrtran.c (it was - looking for the flag in png_ptr->transformations instead of in - png_ptr->flags) (David Raymond). - -Version 1.5.0rc05 [December 31, 2010] - Fixed typo in a comment in CMakeLists.txt (libpng14 => libpng15) (Cosmin) - -Version 1.5.0rc06 [January 4, 2011] - Changed the new configure option "zprefix=string" to "zlib-prefix=string" - -Version 1.5.0rc07 [January 4, 2011] - Updated copyright year. - -Version 1.5.0 [January 6, 2011] - No changes. - -version 1.5.1beta01 [January 8, 2011] - Added description of png_set_crc_action() to the manual. - Added a note in the manual that the type of the iCCP profile was changed - from png_charpp to png_bytepp in png_get_iCCP(). This change happened - in version 1.5.0beta36 but is not noted in the CHANGES. Similarly, - it was changed from png_charpp to png_const_bytepp in png_set_iCCP(). - Ensure that png_rgb_to_gray ignores palette mapped images, if libpng - internally happens to call it with one, and fixed a failure to handle - palette mapped images correctly. This fixes CVE-2690. - -Version 1.5.1beta02 [January 14, 2011] - Fixed a bug in handling of interlaced images (bero at arklinux.org). - Updated CMakeLists.txt (Clifford Yapp) - -Version 1.5.1beta03 [January 14, 2011] - Fixed typecasting of some png_debug() statements (Cosmin) - -Version 1.5.1beta04 [January 16, 2011] - Updated documentation of png_set|get_tRNS() (Thomas Klausner). - Mentioned in the documentation that applications must #include "zlib.h" - if they need access to anything in zlib.h, and that a number of - macros such as png_memset() are no longer accessible by applications. - Corrected pngvalid gamma test "sample" function to access all of the color - samples of each pixel, instead of sampling the red channel three times. - Prefixed variable names index, div, exp, gamma with "png_" to avoid "shadow" - warnings, and (mistakenly) changed png_exp() to exp(). - -Version 1.5.1beta05 [January 16, 2011] - Changed variable names png_index, png_div, png_exp, and png_gamma to - char_index, divisor, exp_b10, and gamma_val, respectively, and - changed exp() back to png_exp(). - -Version 1.5.1beta06 [January 20, 2011] - Prevent png_push_crc_skip() from hanging while reading an unknown chunk - or an over-large compressed zTXt chunk with the progressive reader. - Eliminated more GCC "shadow" warnings. - Revised png_fixed() in png.c to avoid compiler warning about reaching the - end without returning anything. - -Version 1.5.1beta07 [January 22, 2011] - In the manual, describe the png_get_IHDR() arguments in the correct order. - Added const_png_structp and const_png_infop types, and used them in - prototypes for most png_get_*() functions. - -Version 1.5.1beta08 [January 23, 2011] - Added png_get_io_chunk_type() and deprecated png_get_io_chunk_name() - Added synopses for the IO_STATE functions and other missing synopses - to the manual. Removed the synopses from libpngpf.3 because they - were out of date and no longer useful. Better information can be - obtained by reading the prototypes and comments in pngpriv.h - Attempted to fix cpp on Solaris with S. Studio 12 cc, fix build - Added a make macro DFNCPP that is a CPP that will accept the tokens in - a .dfn file and adds configure stuff to test for such a CPP. ./configure - should fail if one is not available. - Corrected const_png_ in png.h to png_const_ to avoid polluting the namespace. - Added png_get_current_row_number and png_get_current_pass_number for the - benefit of the user transform callback. - Added png_process_data_pause and png_process_data_skip for the benefit of - progressive readers that need to stop data processing or want to optimize - skipping of unread data (e.g., if the reader marks a chunk to be skipped.) - -Version 1.5.1beta09 [January 24, 2011] - Enhanced pngvalid, corrected an error in gray_to_rgb, corrected doc error. - pngvalid contains tests of transforms, which tests are currently disabled - because they are incompletely tested. gray_to_rgb was failing to expand - the bit depth for smaller bit depth images; this seems to be a long - standing error and resulted, apparently, in invalid output - (CVE-2011-0408, CERT VU#643140). The documentation did not accurately - describe what libpng really does when converting RGB to gray. - -Version 1.5.1beta10 [January 27, 2010] - Fixed incorrect examples of callback prototypes in the manual, that were - introduced in libpng-1.0.0. - In addition the order of the png_get_uint macros with respect to the - relevant function definitions has been reversed. This helps the - preprocessing of the symbol files be more robust. Furthermore, the - symbol file preprocessing now uses -DPNG_NO_USE_READ_MACROS even when - the library may actually be built with PNG_USE_READ_MACROS; this stops - the read macros interfering with the symbol file format. - Made the manual, synopses, and function prototypes use the function - argument names file_gamma, int_file_gamma, and srgb_intent consistently. - -Version 1.5.1beta11 [January 28, 2011] - Changed PNG_UNUSED from "param=param;" to "{if(param){}}". - Corrected local variable type in new API png_process_data_skip() - The type was self-evidently incorrect but only causes problems on 64-bit - architectures. - Added transform tests to pngvalid and simplified the arguments. - -Version 1.5.1rc01 [January 29, 2011] - No changes. - -Version 1.5.1rc02 [January 31, 2011] - Added a request in the manual that applications do not use "png_" or - "PNG_" to begin any of their own symbols. - Changed PNG_UNUSED to "(void)param;" and updated the commentary in pngpriv.h - -Version 1.5.1 [February 3, 2011] - No changes. - -Version 1.5.2beta01 [February 13, 2011] - More -Wshadow fixes for older gcc compilers. Older gcc versions apparently - check formal parameters names in function declarations (as well as - definitions) to see if they match a name in the global namespace. - Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the - old VisualC++ preprocessor. - Turned on interlace handling in png_read_png(). - Fixed gcc pendantic warnings. - Handle longjmp in Cygwin. - Fixed png_get_current_row_number() in the interlaced case. - Cleaned up ALPHA flags and transformations. - Implemented expansion to 16 bits. - -Version 1.5.2beta02 [February 19, 2011] - Fixed mistake in the descriptions of user read_transform and write_transform - function prototypes in the manual. The row_info struct is png_row_infop. - Reverted png_get_current_row_number() to previous (1.5.2beta01) behavior. - Corrected png_get_current_row_number documentation - Fixed the read/write row callback documentation. - This documents the current behavior, where the callback is called after - every row with information pertaining to the next row. - -Version 1.5.2beta03 [March 3, 2011] - Fixed scripts/makefile.vcwin32 - Updated contrib/pngsuite/README to add the word "modify". - Define PNG_ALLOCATED to blank when _MSC_VER<1300. - -Version 1.5.2rc01 [March 19, 2011] - Define remaining attributes to blank when MSC_VER<1300. - ifdef out mask arrays in pngread.c when interlacing is not supported. - -Version 1.5.2rc02 [March 22, 2011] - Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak - and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip" - from the makefiles. - Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail - to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill) - -Version 1.5.2rc03 [March 24, 2011] - Don't include standard header files in png.h while building the symbol table, - to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro). - -Version 1.5.2 [March 31, 2011] - No changes. - -Version 1.5.3beta01 [April 1, 2011] - Re-initialize the zlib compressor before compressing non-IDAT chunks. - Added API functions (png_set_text_compression_level() and four others) to - set parameters for zlib compression of non-IDAT chunks. - -Version 1.5.3beta02 [April 3, 2011] - Updated scripts/symbols.def with new API functions. - Only compile the new zlib re-initializing code when text or iCCP is - supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro. - Improved the optimization of the zlib CMF byte (see libpng-1.2.6beta03). - Optimize the zlib CMF byte in non-IDAT compressed chunks - -Version 1.5.3beta03 [April 16, 2011] - Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have - snprintf, and the "__STRICT_ANSI__" detects that condition more reliably - than __STDC__ (John Bowler). - Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells - the compiler that a user supplied callback (the error handler) does not - return, yet there is no guarantee in practice that the application code - will correctly implement the error handler because the compiler only - issues a warning if there is a mistake (John Bowler). - Removed the no-longer-used PNG_DEPSTRUCT macro. - Updated the zlib version to 1.2.5 in the VStudio project. - Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in - pngwutil.c (John Bowler). - Fixed bug with stripping the filler or alpha channel when writing, that - was introduced in libpng-1.5.2beta01 (bug report by Andrew Church). - -Version 1.5.3beta04 [April 27, 2011] - Updated pngtest.png with the new zlib CMF optimization. - Cleaned up conditional compilation code and of background/gamma handling - Internal changes only except a new option to avoid compiling the - png_build_grayscale_palette API (which is not used at all internally.) - The main change is to move the transform tests (READ_TRANSFORMS, - WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids - calls to spurious functions if all transforms are disabled and slightly - simplifies those functions. Pngvalid modified to handle this. - A minor change is to stop the strip_16 and expand_16 interfaces from - disabling each other; this allows the future alpha premultiplication - code to use 16-bit intermediate values while still producing 8-bit output. - png_do_background and png_do_gamma have been simplified to take a single - pointer to the png_struct rather than pointers to every item required - from the png_struct. This makes no practical difference to the internal - code. - A serious bug in the pngvalid internal routine 'standard_display_init' has - been fixed - this failed to initialize the red channel and accidentally - initialized the alpha channel twice. - Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to - avoid a possible clash with the png_jmpbuf macro on some platforms. - -Version 1.5.3beta05 [May 6, 2011] - Added the "_POSIX_SOURCE" feature test macro to ensure libpng sees the - correct API. _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and - pngvalid.c to ensure that POSIX conformant systems disable non-POSIX APIs. - Removed png_snprintf and added formatted warning messages. This change adds - internal APIs to allow png_warning messages to have parameters without - requiring the host OS to implement snprintf. As a side effect the - dependency of the tIME-supporting RFC1132 code on stdio is removed and - PNG_NO_WARNINGS does actually work now. - Pass "" instead of '\0' to png_default_error() in png_err(). This mistake - was introduced in libpng-1.2.20beta01. This fixes CVE-2011-2691. - Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte - optimization configureable. - IDAT compression failed if preceded by a compressed text chunk (bug - introduced in libpng-1.5.3beta01-02). This was because the attempt to - reset the zlib stream in png_write_IDAT happened after the first IDAT - chunk had been deflated - much too late. In this change internal - functions were added to claim/release the z_stream and, hopefully, make - the code more robust. Also deflateEnd checking is added - previously - libpng would ignore an error at the end of the stream. - -Version 1.5.3beta06 [May 8, 2011] - Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt - Implemented premultiplied alpha support: png_set_alpha_mode API - -Version 1.5.3beta07 [May 11, 2011] - Added expand_16 support to the high level interface. - Added named value and 'flag' gamma support to png_set_gamma. Made a minor - change from the previous (unreleased) ABI/API to hide the exact value used - for Macs - it's not a good idea to embed this in the ABI! - Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and PNG_AFTER_IDAT - from pngpriv.h to png.h because they must be visible to applications - that call png_set_unknown_chunks(). - Check for up->location !PNG_AFTER_IDAT when writing unknown chunks - before IDAT. - -Version 1.5.3beta08 [May 16, 2011] - Improved "pngvalid --speed" to exclude more of pngvalid from the time. - Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt - The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative - parameters are supplied by the caller), while in the absence of cHRM - sRGB/Rec 709 values are still used. This introduced a divide-by-zero - bug in png_handle_cHRM(). - The bKGD chunk no longer overwrites the background value set by - png_set_background(), allowing the latter to be used before the file - header is read. It never performed any useful function to override - the default anyway. - Added memory overwrite and palette image checks to pngvalid.c - Previously palette image code was poorly checked. Since the transformation - code has a special palette path in most cases this was a severe weakness. - Minor cleanup and some extra checking in pngrutil.c and pngrtran.c. When - expanding an indexed image, always expand to RGBA if transparency is - present. - -Version 1.5.3beta09 [May 17, 2011] - Reversed earlier 1.5.3 change of transformation order; move png_expand_16 - back where it was. The change doesn't work because it requires 16-bit - gamma tables when the code only generates 8-bit ones. This fails - silently; the libpng code just doesn't do any gamma correction. Moving - the tests back leaves the old, inaccurate, 8-bit gamma calculations, but - these are clearly better than none! - -Version 1.5.3beta10 [May 20, 2011] - - png_set_background() and png_expand_16() did not work together correctly. - This problem is present in 1.5.2; if png_set_background is called with - need_expand false and the matching 16 bit color libpng erroneously just - treats it as an 8-bit color because of where png_do_expand_16 is in the - transform list. This simple fix reduces the supplied colour to 8-bits, - so it gets smashed, but this is better than the current behavior. - Added tests for expand16, more fixes for palette image tests to pngvalid. - Corrects the code for palette image tests and disables attempts to - validate palette colors. - -Version 1.5.3rc01 [June 3, 2011] - No changes. - -Version 1.5.3rc02 [June 8, 2011] - Fixed uninitialized memory read in png_format_buffer() (Bug report by - Frank Busse, CVE-2011-2501, related to CVE-2004-0421). - -Version 1.5.3beta11 [June 11, 2011] - Fixed png_handle_sCAL which is broken in 1.5. This fixes CVE 2011-2692. - Added sCAL to pngtest.png - Revised documentation about png_set_user_limits() to say that it also affects - png writing. - Revised handling of png_set_user_limits() so that it can increase the - limit beyond the PNG_USER_WIDTH|HEIGHT_MAX; previously it could only - reduce it. - Make the 16-to-8 scaling accurate. Dividing by 256 with no rounding is - wrong (high by one) 25% of the time. Dividing by 257 with rounding is - wrong in 128 out of 65536 cases. Getting the right answer all the time - without division is easy. - Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro. - Added projects/owatcom, an IDE project for OpenWatcom to replace - scripts/makefile.watcom. This project works with OpenWatcom 1.9. The - IDE autogenerates appropriate makefiles (libpng.mk) for batch processing. - The project is configurable, unlike the Visual Studio project, so long - as the developer has an awk. - Changed png_set_gAMA to limit the gamma value range so that the inverse - of the stored value cannot overflow the fixed point representation, - and changed other things OpenWatcom warns about. - Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. This allows - pngvalid to build when ALPHA_MODE is not supported, which is required if - it is to build on libpng 1.4. - Removed string/memory macros that are no longer used and are not - necessarily fully supportable, particularly png_strncpy and png_snprintf. - Added log option to pngvalid.c and attempted to improve gamma messages. - -Version 1.5.3 [omitted] - People found the presence of a beta release following an rc release - to be confusing; therefore we bump the version to libpng-1.5.4beta01 - and there will be no libpng-1.5.3 release. - -Version 1.5.4beta01 [June 14, 2011] - Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED - to get the same (inaccurate) output as libpng-1.5.2 and earlier. - Moved definitions of PNG_HAVE_IHDR, PNG_AFTER_IDAT, and PNG_HAVE_PLTE - outside of an unknown-chunk block in png.h because they are also - needed for other uses. - -Version 1.5.4beta02 [June 14, 2011] - Fixed and clarified LEGACY 16-to-8 scaling code. - Added png_set_chop_16() API, to match inaccurate results from previous - libpng versions. - Removed the ACCURATE and LEGACY options (they are no longer useable) - Use the old scaling method for background if png_set_chop_16() was - called. - Made png_set_chop_16() API removeable by disabling PNG_CHOP_16_TO_8_SUPPORTED - -Version 1.5.4beta03 [June 15, 2011] - Fixed a problem in png_do_expand_palette() exposed by optimization in - 1.5.3beta06 - Also removed a spurious and confusing "trans" member ("trans") from png_info. - The palette expand optimization prevented expansion to an intermediate RGBA - form if tRNS was present but alpha was marked to be stripped; this exposed - a check for tRNS in png_do_expand_palette() which is inconsistent with the - code elsewhere in libpng. - Correction to the expand_16 code; removed extra instance of - png_set_scale_16_to_8 from pngpriv.h - -Version 1.5.4beta04 [June 16, 2011] - Added a missing "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c - Added PNG_TRANSFORM_CHOP_16 to the high-level read transforms. - Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. If this is - not enabled, png_set_strip_16() and png_do_scale_16_to_8() aren't built. - Revised contrib/visupng, gregbook, and pngminim to demonstrate chop_16_to_8 - -Version 1.5.4beta05 [June 16, 2011] - Renamed png_set_strip_16() to png_set_scale_16() and renamed - png_set_chop_16() to png_set_strip(16) in an attempt to minimize the - behavior changes between libpng14 and libpng15. - -Version 1.5.4beta06 [June 18, 2011] - Fixed new bug that was causing both strip_16 and scale_16 to be applied. - -Version 1.5.4beta07 [June 19, 2011] - Fixed pngvalid, simplified macros, added checking for 0 in sCAL. - The ACCURATE scale macro is no longer defined in 1.5 - call the - png_scale_16_to_8 API. Made sure that PNG_READ_16_TO_8 is still defined - if the png_strip_16_to_8 API is present. png_check_fp_number now - maintains some state so that positive, negative and zero values are - identified. sCAL uses these to be strictly spec conformant. - -Version 1.5.4beta08 [June 23, 2011] - Fixed pngvalid if ACCURATE_SCALE is defined. - Updated scripts/pnglibconf.h.prebuilt. - -Version 1.5.4rc01 [June 30, 2011] - Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400. - -Version 1.5.4 [July 7, 2011] - No changes. - -Version 1.5.5beta01 [July 13, 2011] - Fixed some typos and made other minor changes in the manual. - Updated contrib/pngminus/makefile.std (Samuli Souminen) - -Version 1.5.5beta02 [July 14, 2011] - Revised Makefile.am and Makefile.in to look in the right directory for - pnglibconf.h.prebuilt - -Version 1.5.5beta03 [July 27, 2011] - Enabled compilation with g++ compiler. This compiler does not recognize - the file extension, so it always compiles with C++ rules. Made minor - changes to pngrutil.c to cast results where C++ expects it but C does not. - Minor editing of libpng.3 and libpng-manual.txt. - -Version 1.5.5beta04 [July 29, 2011] - Revised CMakeLists.txt (Clifford Yapp) - Updated commentary about the png_rgb_to_gray() default coefficients - in the manual and in pngrtran.c - -Version 1.5.5beta05 [August 17, 2011] - Prevent unexpected API exports from non-libpng DLLs on Windows. The "_DLL" - is removed from the test of whether a DLL is being built (this erroneously - caused the libpng APIs to be marked as DLL exports in static builds under - Microsoft Visual Studio). Almost all of the libpng building configuration - is moved from pngconf.h to pngpriv.h, but PNG_DLL_EXPORT remains in - pngconf.h, though, so that it is colocated with the import definition (it - is no longer used anywhere in the installed headers). The VStudio project - definitions have been cleaned up: "_USRDLL" has been removed from the - static library builds (this was incorrect), and PNG_USE_DLL has been added - to pngvalid to test the functionality (pngtest does not supply it, - deliberately). The spurious "_EXPORTS" has been removed from the - libpng build (all these errors were a result of copy/paste between project - configurations.) - Added new types and internal functions for CIE RGB end point handling to - pngpriv.h (functions yet to be implemented). - -Version 1.5.5beta06 [August 26, 2011] - Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set in CMakeLists.txt - (Clifford Yap) - Fixes to rgb_to_gray and cHRM XYZ APIs (John Bowler): - The rgb_to_gray code had errors when combined with gamma correction. - Some pixels were treated as true grey when they weren't and such pixels - and true grey ones were not gamma corrected (the original value of the - red component was used instead). APIs to get and set cHRM using color - space end points have been added and the rgb_to_gray code that defaults - based on cHRM, and the divide-by-zero bug in png_handle_cHRM (CERT - VU#477046, CVE-2011-3328, introduced in 1.5.4) have been corrected. - A considerable number of tests has been added to pngvalid for the - rgb_to_gray transform. - Arithmetic errors in rgb_to_gray whereby the calculated gray value was - truncated to the bit depth rather than rounded have been fixed except in - the 8-bit non-gamma-corrected case (where consistency seems more important - than correctness.) The code still has considerable inaccuracies in the - 8-bit case because 8-bit linear arithmetic is used. - -Version 1.5.5beta07 [September 7, 2011] - Added "$(ARCH)" option to makefile.darwin - Added SunOS support to configure.ac and Makefile.am - Changed png_chunk_benign_error() to png_warning() in png.c, in - png_XYZ_from_xy_checked(). - -Version 1.5.5beta08 [September 10, 2011] - Fixed 64-bit compilation errors (gcc). The errors fixed relate - to conditions where types that are 32 bits in the GCC 32-bit - world (uLong and png_size_t) become 64 bits in the 64-bit - world. This produces potential truncation errors which the - compiler correctly flags. - Relocated new HAVE_SOLARIS_LD definition in configure.ac - Constant changes for 64-bit compatibility (removal of L suffixes). The - 16-bit cases still use "L" as we don't have a 16-bit test system. - -Version 1.5.5rc01 [September 15, 2011] - Removed "L" suffixes in pngpriv.h - -Version 1.5.5 [September 22, 2011] - No changes. - -Version 1.5.6beta01 [September 22, 2011] - Fixed some 64-bit type conversion warnings in pngrtran.c - Moved row_info from png_struct to a local variable. - The various interlace mask arrays have been made into arrays of - bytes and made PNG_CONST and static (previously some arrays were - marked PNG_CONST and some weren't). - Additional checks have been added to the transform code to validate the - pixel depths after the transforms on both read and write. - Removed some redundant code from pngwrite.c, in png_destroy_write_struct(). - Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4]. - This removes the need to allocate temporary strings for chunk names on - the stack in the read/write code. Unknown chunk handling still uses the - string form because this is exposed in the API. - -Version 1.5.6beta02 [September 26, 2011] - Added a note in the manual the png_read_update_info() must be called only - once with a particular info_ptr. - Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro. - -Version 1.5.6beta03 [September 28, 2011] - Revised test-pngtest.sh to report FAIL when pngtest fails. - Added "--strict" option to pngtest, to report FAIL when the failure is - only because the resulting valid files are different. - Revised CMakeLists.txt to work with mingw and removed some material from - CMakeLists.txt that is no longer useful in libpng-1.5. - -Version 1.5.6beta04 [October 5, 2011] - Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")." - -Version 1.5.6beta05 [October 12, 2011] - Speed up png_combine_row() for interlaced images. This reduces the generality - of the code, allowing it to be optimized for Adam7 interlace. The masks - passed to png_combine_row() are now generated internally, avoiding - some code duplication and localizing the interlace handling somewhat. - Align png_struct::row_buf - previously it was always unaligned, caused by - a bug in the code that attempted to align it; the code needs to subtract - one from the pointer to take account of the filter byte prepended to - each row. - Optimized png_combine_row() when rows are aligned. This gains a small - percentage for 16-bit and 32-bit pixels in the typical case where the - output row buffers are appropriately aligned. The optimization was not - previously possible because the png_struct buffer was always misaligned. - Fixed bug in png_write_chunk_header() debug print, introduced in 1.5.6beta01. - -Version 1.5.6beta06 [October 17, 2011] - Removed two redundant tests for unitialized row. - Fixed a relatively harmless memory overwrite in compressed text writing - with a 1 byte zlib buffer. - Add ability to call png_read_update_info multiple times to pngvalid.c. - Fixes for multiple calls to png_read_update_info. These fixes attend to - most of the errors revealed in pngvalid, however doing the gamma work - twice results in inaccuracies that can't be easily fixed. There is now - a warning in the code if this is going to happen. - Turned on multiple png_read_update_info in pngvalid transform tests. - Prevent libpng from overwriting unused bits at the end of the image when - it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would - overwrite the partial byte at the end of each row if the row width was not - an exact multiple of 8 bits and the image is not interlaced. - -Version 1.5.6beta07 [October 21, 2011] - Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row - (Mans Rullgard). - -Version 1.5.6rc01 [October 26, 2011] - Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM" - -Version 1.5.6rc02 [October 27, 2011] - Added LSR() macro to defend against buggy compilers that evaluate non-taken - code branches and complain about out-of-range shifts. - -Version 1.5.6rc03 [October 28, 2011] - Renamed the LSR() macro to PNG_LSR() and added PNG_LSL() macro. - Fixed compiler warnings with Intel and MSYS compilers. The logical shift - fix for Microsoft Visual C is required by other compilers, so this - enables that fix for all compilers when using compile-time constants. - Under MSYS 'byte' is a name declared in a system header file, so we - changed the name of a local variable to avoid the warnings that result. - Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h - -Version 1.5.6 [November 3, 2011] - No changes. - -Version 1.5.7beta01 [November 4, 2011] - Added support for ARM processor, when decoding all PNG up-filtered rows - and any other-filtered rows with 3 or 4 bytes per pixel (Mans Rullgard). - Fixed bug in pngvalid on early allocation failure; fixed type cast in - pngmem.c; pngvalid would attempt to call png_error() if the allocation - of a png_struct or png_info failed. This would probably have led to a - crash. The pngmem.c implementation of png_malloc() included a cast - to png_size_t which would fail on large allocations on 16-bit systems. - Fix for the preprocessor of the Intel C compiler. The preprocessor - splits adjacent @ signs with a space; this changes the concatentation - token from @-@-@ to PNG_JOIN; that should work with all compiler - preprocessors. - Paeth filter speed improvements from work by Siarhei Siamashka. This - changes the 'Paeth' reconstruction function to improve the GCC code - generation on x86. The changes are only part of the suggested ones; - just the changes that definitely improve speed and remain simple. - The changes also slightly increase the clarity of the code. - -Version 1.5.7beta02 [November 11, 2011] - Check compression_type parameter in png_get_iCCP and remove spurious - casts. The compression_type parameter is always assigned to, so must - be non-NULL. The cast of the profile length potentially truncated the - value unnecessarily on a 16-bit int system, so the cast of the (byte) - compression type to (int) is specified by ANSI-C anyway. - Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left - the sBIT fields in the test pixel as 0, which resulted in a floating - point division by zero which was irrelevant but causes systems where - FP exceptions cause a crash. Added code to pngvalid to turn on FP - exceptions if the appropriate glibc support is there to ensure this is - tested in the future. - Updated scripts/pnglibconf.mak and scripts/makefile.std to handle the - new PNG_JOIN macro. - Added versioning to pnglibconf.h comments. - Simplified read/write API initial version; basic read/write tested on - a variety of images, limited documentation (in the header file.) - Installed more accurate linear to sRGB conversion tables. The slightly - modified tables reduce the number of 16-bit values that - convert to an off-by-one 8-bit value. The "makesRGB.c" code that was used - to generate the tables is now in a contrib/sRGBtables sub-directory. - -Version 1.5.7beta03 [November 17, 2011] - Removed PNG_CONST from the sRGB table declarations in pngpriv.h and png.c - Added run-time detection of NEON support. - Added contrib/libtests; includes simplified API test and timing test and - a color conversion utility for rapid checking of failed 'pngstest' results. - Multiple transform bug fixes plus a work-round for double gamma correction. - libpng does not support more than one transform that requires linear data - at once - if this is tried typically the results is double gamma - correction. Since the simplified APIs can need rgb to gray combined with - a compose operation it is necessary to do one of these outside the main - libpng transform code. This check-in also contains fixes to various bugs - in the simplified APIs themselves and to some bugs in compose and rgb to - gray (on palette) itself. - Fixes for C++ compilation using g++ When libpng source is compiled - using g++. The compiler imposes C++ rules on the C source; thus it - is desireable to make the source work with either C or C++ rules - without throwing away useful error information. This change adds - png_voidcast to allow C semantic (void*) cases or the corresponding - C++ static_cast operation, as appropriate. - Added --noexecstack to assembler file compilation. GCC does not set - this on assembler compilation, even though it does on C compilation. - This creates security issues if assembler code is enabled; the - work-around is to set it by default in the flags for $(CCAS) - Work around compilers that don't support declaration of const data. Some - compilers fault 'extern const' data declarations (because the data is - not initialized); this turns on const-ness only for compilers where - this is known to work. - -Version 1.5.7beta04 [November 17, 2011] - Since the gcc driver does not recognize the --noexecstack flag, we must - use the -Wa prefix to have it passed through to the assembler. - Also removed a duplicate setting of this flag. - Added files that were omitted from the libpng-1.5.7beta03 zip distribution. - -Version 1.5.7beta05 [November 25, 2011] - Removed "zTXt" from warning in generic chunk decompression function. - Validate time settings passed to png_set_tIME() and png_convert_to_rfc1123() - (Frank Busse). Note: This prevented CVE-2015-7981 from affecting - libpng-1.5.7 and later. - Added MINGW support to CMakeLists.txt - Reject invalid compression flag or method when reading the iTXt chunk. - Backed out 'simplified' API changes. The API seems too complex and there - is a lack of consensus or enthusiasm for the proposals. The API also - reveals significant bugs inside libpng (double gamma correction and the - known bug of being unable to retrieve a corrected palette). It seems - better to wait until the bugs, at least, are corrected. - Moved pngvalid.c into contrib/libtests - Rebuilt Makefile.in, configure, etc., with autoconf-2.68 - -Version 1.5.7rc01 [December 1, 2011] - Replaced an "#if" with "#ifdef" in pngrtran.c - Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else) - -Version 1.5.7rc02 [December 5, 2011] - Revised project files and contrib/pngvalid/pngvalid.c to account for - the relocation of pngvalid into contrib/libtests. - Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400, - as in libpng-1.5.4. - Put CRLF line endings in the owatcom project files. - -Version 1.5.7rc03 [December 7, 2011] - Updated CMakeLists.txt to account for the relocation of pngvalid.c - -Version 1.5.7 [December 15, 2011] - Minor fixes to pngvalid.c for gcc 4.6.2 compatibility to remove warnings - reported by earlier versions. - Fixed minor memset/sizeof errors in pngvalid.c. - -Version 1.6.0beta01 [December 15, 2011] - Removed machine-generated configure files from the GIT repository (they will - continue to appear in the tarball distributions and in the libpng15 and - earlier GIT branches). - Restored the new 'simplified' API, which was started in libpng-1.5.7beta02 - but later deleted from libpng-1.5.7beta05. - Added example programs for the new 'simplified' API. - Added ANSI-C (C90) headers and require them, and take advantage of the - change. Also fixed some of the projects/* and contrib/* files that needed - updates for libpng16 and the move of pngvalid.c. - With this change the required ANSI-C header files are assumed to exist: the - implementation must provide float.h, limits.h, stdarg.h and stddef.h and - libpng relies on limits.h and stddef.h existing and behaving as defined - (the other two required headers aren't used). Non-ANSI systems that don't - have stddef.h or limits.h will have to provide an appropriate fake - containing the relevant types and #defines. - Dropped support for 16-bit platforms. The use of FAR/far has been eliminated - and the definition of png_alloc_size_t is now controlled by a flag so - that 'small size_t' systems can select it if necessary. Libpng 1.6 may - not currently work on such systems -- it seems likely that it will - ask 'malloc' for more than 65535 bytes with any image that has a - sufficiently large row size (rather than simply failing to read such - images). - New tools directory containing tools used to generate libpng code. - Fixed race conditions in parallel make builds. With higher degrees of - parallelism during 'make' the use of the same temporary file names such - as 'dfn*' can result in a race where a temporary file from one arm of the - build is deleted or overwritten in another arm. This changes the - temporary files for suffix rules to always use $* and ensures that the - non-suffix rules use unique file names. - -Version 1.6.0beta02 [December 21, 2011] - Correct configure builds where build and source directories are separate. - The include path of 'config.h' was erroneously made relative in pngvalid.c - in libpng 1.5.7. - -Version 1.6.0beta03 [December 22, 2011] - Start-up code size improvements, error handler flexibility. These changes - alter how the tricky allocation of the initial png_struct and png_info - structures are handled. png_info is now handled in pretty much the same - way as everything else, except that the allocations handle NULL return - silently. png_struct is changed in a similar way on allocation and on - deallocation a 'safety' error handler is put in place (which should never - be required). The error handler itself is changed to permit mismatches - in the application and libpng error buffer size; however, this means a - silent change to the API to return the jmp_buf if the size doesn't match - the size from the libpng compilation; libpng now allocates the memory and - this may fail. Overall these changes result in slight code size - reductions; however, this is a reduction in code that is always executed - so is particularly valuable. Overall on a 64-bit system the libpng DLL - decreases in code size by 1733 bytes. pngerror.o increases in size by - about 465 bytes because of the new functionality. - Added png_convert_to_rfc1123_buffer() and deprecated png_convert_to_rfc1123() - to avoid including a spurious buffer in the png_struct. - -Version 1.6.0beta04 [December 30, 2011] - Regenerated configure scripts with automake-1.11.2 - Eliminated png_info_destroy(). It is now used only in png.c and only calls - one other internal function and memset(). - Enabled png_get_sCAL_fixed() if floating point APIs are enabled. Previously - it was disabled whenever internal fixed point arithmetic was selected, - which meant it didn't exist even on systems where FP was available but not - preferred. - Added pngvalid.c compile time checks for const APIs. - Implemented 'restrict' for png_info and png_struct. Because of the way - libpng works both png_info and png_struct are always accessed via a - single pointer. This means adding C99 'restrict' to the pointer gives - the compiler some opportunity to optimize the code. This change allows - that. - Moved AC_MSG_CHECKING([if libraries can be versioned]) later to the proper - location in configure.ac (Gilles Espinasse). - Changed png_memcpy to C assignment where appropriate. Changed all those - uses of png_memcpy that were doing a simple assignment to assignments - (all those cases where the thing being copied is a non-array C L-value). - Added some error checking to png_set_*() routines. - Removed the reference to the non-exported function png_memcpy() from - example.c. - Fixed the Visual C 64-bit build - it requires jmp_buf to be aligned, but - it had become misaligned. - Revised contrib/pngminus/pnm2png.c to avoid warnings when png_uint_32 - and unsigned long are of different sizes. - -Version 1.6.0beta05 [January 15, 2012] - Updated manual with description of the simplified API (copied from png.h) - Fix bug in pngerror.c: some long warnings were being improperly truncated - (CVE-2011-3464, bug introduced in libpng-1.5.3beta05). - -Version 1.6.0beta06 [January 24, 2012] - Added palette support to the simplified APIs. This commit - changes some of the macro definitions in png.h, app code - may need corresponding changes. - Increased the formatted warning buffer to 192 bytes. - Added color-map support to simplified API. This is an initial version for - review; the documentation has not yet been updated. - Fixed Min/GW uninstall to remove libpng.dll.a - -Version 1.6.0beta07 [January 28, 2012] - Eliminated Intel icc/icl compiler warnings. The Intel (GCC derived) - compiler issues slightly different warnings from those issued by the - current vesions of GCC. This eliminates those warnings by - adding/removing casts and small code rewrites. - Updated configure.ac from autoupdate: added --enable-werror option. - Also some layout regularization and removal of introduced tab characters - (replaced with 3-character indentation). Obsolete macros identified by - autoupdate have been removed; the replacements are all in 2.59 so - the pre-req hasn't been changed. --enable-werror checks for support - for -Werror (or the given argument) in the compiler. This mimics the - gcc configure option by allowing -Werror to be turned on safely; without - the option the tests written in configure itself fail compilation because - they cause compiler warnings. - Rewrote autogen.sh to run autoreconf instead of running tools one-by-one. - Conditionalize the install rules for MINGW and CYGWIN in CMakeLists.txt and - set CMAKE_LIBRARY_OUTPUT_DIRECTORY to "lib" on all platforms (C. Yapp). - Freeze libtool files in the 'scripts' directory. This version of autogen.sh - attempts to dissuade people from running it when it is not, or should not, - be necessary. In fact, autogen.sh does not work when run in a libpng - directory extracted from a tar distribution anymore. You must run it in - a GIT clone instead. - Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale), - and renamed three whose names were inconsistent with those in - pngsuite/README.txt. - -Version 1.6.0beta08 [February 1, 2012] - Fixed Image::colormap misalignment in pngstest.c - Check libtool/libtoolize version number (2.4.2) in configure.ac - Divide test-pngstest.sh into separate pngstest runs for basic and - transparent images. - Moved automake options to AM_INIT_AUTOMAKE in configure.ac - Added color-tests, silent-rules (Not yet implemented in Makefile.am) and - version checking to configure.ac - Improved pngstest speed by not doing redundant tests and add const to - the background parameter of png_image_finish_read. The --background - option is now done automagically only when required, so that commandline - option no longer exists. - Cleaned up pngpriv.h to consistently declare all functions and data. - Also eliminated PNG_CONST_DATA, which is apparently not needed but we - can't be sure until it is gone. - Added symbol prefixing that allows all the libpng external symbols - to be prefixed (suggested by Reuben Hawkins). - Updated "ftbb*.png" list in the owatcom and vstudio projects. - Fixed 'prefix' builds on clean systems. The generation of pngprefix.h - should not require itself. - Updated INSTALL to explain that autogen.sh must be run in a GIT clone, - not in a libpng directory extracted from a tar distribution. - -Version 1.6.0beta09 [February 1, 2012] - Reverted the prebuilt configure files to libpng-1.6.0beta05 condition. - -Version 1.6.0beta10 [February 3, 2012] - Added Z_SOLO for zlib-1.2.6+ and correct pngstest tests - Updated list of test images in CMakeLists.txt - Updated the prebuilt configure files to current condition. - Revised INSTALL information about autogen.sh; it works in tar distributions. - -Version 1.6.0beta11 [February 16, 2012] - Fix character count in pngstest command in projects/owatcom/pngstest.tgt - Revised test-pngstest.sh to report PASS/FAIL for each image. - Updated documentation about the simplified API. - Corrected estimate of error in libpng png_set_rgb_to_gray API. The API is - extremely inaccurate for sRGB conversions because it uses an 8-bit - intermediate linear value and it does not use the sRGB transform, so it - suffers from the known instability in gamma transforms for values close - to 0 (see Poynton). The net result is that the calculation has a maximum - error of 14.99/255; 0.5/255^(1/2.2). pngstest now uses 15 for the - permitted 8-bit error. This may still not be enough because of arithmetic - error. - Removed some unused arrays (with #ifdef) from png_read_push_finish_row(). - Fixed a memory overwrite bug in simplified read of RGB PNG with - non-linear gamma Also bugs in the error checking in pngread.c and changed - quite a lot of the checks in pngstest.c to be correct; either correctly - written or not over-optimistic. The pngstest changes are insufficient to - allow all possible RGB transforms to be passed; pngstest cmppixel needs - to be rewritten to make it clearer which errors it allows and then changed - to permit known inaccuracies. - Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h - Fixed fixed/float API export conditionals. 1) If FIXED_POINT or - FLOATING_POINT options were switched off, png.h ended up with lone ';' - characters. This is not valid ANSI-C outside a function. The ';' - characters have been moved inside the definition of PNG_FP_EXPORT and - PNG_FIXED_EXPORT. 2) If either option was switched off, the declaration - of the corresponding functions were completely omitted, even though some - of them are still used internally. The result is still valid, but - produces warnings from gcc with some warning options (including -Wall). The - fix is to cause png.h to declare the functions with PNG_INTERNAL_FUNCTION - when png.h is included from pngpriv.h. - Check for invalid palette index while reading paletted PNG. When one is - found, issue a warning and increase png_ptr->num_palette accordingly. - Apps are responsible for checking to see if that happened. - -Version 1.6.0beta12 [February 18, 2012] - Do not increase num_palette on invalid_index. - Relocated check for invalid palette index to pngrtran.c, after unpacking - the sub-8-bit pixels. - Fixed CVE-2011-3026 buffer overrun bug. This bug was introduced when - iCCP chunk support was added at libpng-1.0.6. Deal more correctly with the - test on iCCP chunk length. Also removed spurious casts that may hide - problems on 16-bit systems. - -Version 1.6.0beta13 [February 24, 2012] - Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from - pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c; - now that png_ptr->buffer is inaccessible to applications, the special - handling is no longer useful. - Added PNG_SAFE_LIMITS feature to pnglibconf.dfa, pngpriv.h, and new - pngusr.dfa to reset the user limits to safe ones if PNG_SAFE_LIMITS is - defined. To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED=1" on the - configure command or put #define PNG_SAFE_LIMITS_SUPPORTED in - pnglibconf.h.prebuilt and pnglibconf.h. - -Version 1.6.0beta14 [February 27, 2012] - Added information about the new limits in the manual. - Updated Makefile.in - -Version 1.6.0beta15 [March 2, 2012] - Removed unused "current_text" members of png_struct and the png_free() - of png_ptr->current_text from pngread.c - Rewrote pngstest.c for substantial speed improvement. - Fixed transparent pixel and 16-bit rgb tests in pngstest and removed a - spurious check in pngwrite.c - Added PNG_IMAGE_FLAG_FAST for the benefit of applications that store - intermediate files, or intermediate in-memory data, while processing - image data with the simplified API. The option makes the files larger - but faster to write and read. pngstest now uses this by default; this - can be disabled with the --slow option. - Improved pngstest fine tuning of error numbers, new test file generator. - The generator generates images that test the full range of sample values, - allow the error numbers in pngstest to be tuned and checked. makepng - also allows generation of images with extra chunks, although this is - still work-in-progress. - Added check for invalid palette index while reading. - Fixed some bugs in ICC profile writing. The code should now accept - all potentially valid ICC profiles and reject obviously invalid ones. - It now uses png_error() to do so rather than casually writing a PNG - without the necessary color data. - Removed whitespace from the end of lines in all source files and scripts. - -Version 1.6.0beta16 [March 6, 2012] - Relocated palette-index checking function from pngrutil.c to pngtrans.c - Added palette-index checking while writing. - Changed png_inflate() and calling routines to avoid overflow problems. - This is an intermediate check-in that solves the immediate problems and - introduces one performance improvement (avoiding a copy via png_ptr->zbuf.) - Further changes will be made to make ICC profile handling more secure. - Fixed build warnings (MSVC, GCC, GCC v3). Cygwin GCC with default options - declares 'index' as a global, causing a warning if it is used as a local - variable. GCC 64-bit warns about assigning a (size_t) (unsigned 64-bit) - to an (int) (signed 32-bit). MSVC, however, warns about using the - unary '-' operator on an unsigned value (even though it is well defined - by ANSI-C to be ~x+1). The padding calculation was changed to use a - different method. Removed the tests on png_ptr->pass. - Added contrib/libtests/tarith.c to test internal arithmetic functions from - png.c. This is a libpng maintainer program used to validate changes to the - internal arithmetic functions. - Made read 'inflate' handling like write 'deflate' handling. The read - code now claims and releases png_ptr->zstream, like the write code. - The bug whereby the progressive reader failed to release the zstream - is now fixed, all initialization is delayed, and the code checks for - changed parameters on deflate rather than always calling - deflatedEnd/deflateInit. - Validate the zTXt strings in pngvalid. - Added code to validate the windowBits value passed to deflateInit2(). - If the call to deflateInit2() is wrong a png_warning will be issued - (in fact this is harmless, but the PNG data produced may be sub-optimal). - -Version 1.6.0beta17 [March 10, 2012] - Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition. - Reject all iCCP chunks after the first, even if the first one is invalid. - Deflate/inflate was reworked to move common zlib calls into single - functions [rw]util.c. A new shared keyword check routine was also added - and the 'zbuf' is no longer allocated on progressive read. It is now - possible to call png_inflate() incrementally. A warning is no longer - issued if the language tag or translated keyword in the iTXt chunk - has zero length. - If benign errors are disabled use maximum window on ancilliary inflate. - This works round a bug introduced in 1.5.4 where compressed ancillary - chunks could end up with a too-small windowBits value in the deflate - header. - -Version 1.6.0beta18 [March 16, 2012] - Issue a png_benign_error() instead of png_warning() about bad palette index. - In pngtest, treat benign errors as errors if "-strict" is present. - Fixed an off-by-one error in the palette index checking function. - Fixed a compiler warning under Cygwin (Windows-7, 32-bit system) - Revised example.c to put text strings in a temporary character array - instead of directly assigning string constants to png_textp members. - This avoids compiler warnings when -Wwrite-strings is enabled. - Added output flushing to aid debugging under Visual Studio. Unfortunately - this is necessary because the VS2010 output window otherwise simply loses - the error messages on error (they weren't flushed to the window before - the process exited, apparently!) - Added configuration support for benign errors and changed the read - default. Also changed some warnings in the iCCP and sRGB handling - from to benign errors. Configuration now makes read benign - errors warnings and write benign errors to errors by default (thus - changing the behavior on read). The simplified API always forces - read benign errors to warnings (regardless of the system default, unless - this is disabled in which case the simplified API can't be built.) - -Version 1.6.0beta19 [March 18, 2012] - Work around for duplicate row start calls; added warning messages. - This turns on PNG_FLAG_DETECT_UNINITIALIZED to detect app code that - fails to call one of the 'start' routines (not enabled in libpng-1.5 - because it is technically an API change, since it did normally work - before.) It also makes duplicate calls to png_read_start_row (an - internal function called at the start of the image read) benign, as - they were before changes to use png_inflate_claim. Somehow webkit is - causing this to happen; this is probably a mis-feature in the zlib - changes so this commit is only a work-round. - Removed erroneous setting of DETECT_UNINITIALIZED and added more - checks. The code now does a png_error if an attempt is made to do the - row initialization twice; this is an application error and it has - serious consequences because the transform data in png_struct is - changed by each call. - Added application error reporting and added chunk names to read - benign errors; also added --strict to pngstest - not enabled - yet because a warning is produced. - Avoid the double gamma correction warning in the simplified API. - This allows the --strict option to pass in the pngstest checks - -Version 1.6.0beta20 [March 29, 2012] - Changed chunk handler warnings into benign errors, incrementally load iCCP - Added checksum-icc.c to contrib/tools - Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice. - Recognize known sRGB ICC profiles while reading; prefer writing the - iCCP profile over writing the sRGB chunk, controlled by the - PNG_sRGB_PROFILE_CHECKS option. - Revised png_set_text_2() to avoid potential memory corruption (fixes - CVE-2011-3048, also known as CVE-2012-3425). - -Version 1.6.0beta21 [April 27, 2012] - Revised scripts/makefile.darwin: use system zlib; remove quotes around - architecture list; add missing ppc architecture; add architecture options - to shared library link; don't try to create a shared lib based on missing - RELEASE variable. - Enable png_set_check_for_invalid_index() for both read and write. - Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpriv.h around - declaration of png_handle_unknown(). - Added -lssp_nonshared in a comment in scripts/makefile.freebsd - and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE. - -Version 1.6.0beta22 [May 23, 2012] - Removed need for -Wno-cast-align with clang. clang correctly warns on - alignment increasing pointer casts when -Wcast-align is passed. This - fixes the cases that clang warns about either by eliminating the - casts from png_bytep to png_uint_16p (pngread.c), or, for pngrutil.c - where the cast is previously verified or pngstest.c where it is OK, by - introducing new png_aligncast macros to do the cast in a way that clang - accepts. - -Version 1.6.0beta23 [June 6, 2012] - Revised CMakeLists.txt to not attempt to make a symlink under mingw. - Made fixes for new optimization warnings from gcc 4.7.0. The compiler - performs an optimization which is safe; however it then warns about it. - Changing the type of 'palette_number' in pngvalid.c removes the warning. - Do not depend upon a GCC feature macro being available for use in generating - the linker mapfile symbol prefix. - Improved performance of new do_check_palette_indexes() function (only - update the value when it actually increases, move test for whether - the check is wanted out of the function. - -Version 1.6.0beta24 [June 7, 2012] - Don't check palette indexes if num_palette is 0 (as it can be in MNG files). - -Version 1.6.0beta25 [June 16, 2012] - Revised png_set_keep_unknown_chunks() so num_chunks < 0 means ignore all - unknown chunks and all known chunks except for IHDR, PLTE, tRNS, IDAT, - and IEND. Previously it only meant ignore all unknown chunks, the - same as num_chunks == 0. Revised png_image_skip_unused_chunks() to - provide a list of chunks to be processed instead of a list of chunks to - ignore. Revised contrib/gregbook/readpng2.c accordingly. - -Version 1.6.0beta26 [July 10, 2012] - Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it - depends on configure, which is not included in those archives. - Moved scripts/chkfmt to contrib/tools. - Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386. - -Version 1.6.0beta27 [August 11, 2012] - Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3. - Do not use __restrict when GNUC is <= 3.1 - Removed references to png_zalloc() and png_zfree() from the manual. - Fixed configurations where floating point is completely disabled. Because - of the changes to support symbol prefixing PNG_INTERNAL_FUNCTION declares - floating point APIs during libpng builds even if they are completely - disabled. This requires the png floating point types (png_double*) to be - declared even though the functions are never actually defined. This - change provides a dummy definition so that the declarations work, yet any - implementation will fail to compile because of an incomplete type. - Re-eliminated the use of strcpy() in pngtest.c. An unncessary use of - strcpy() was accidentally re-introduced in libpng16; this change replaces - it with strncpy(). - Eliminated use of png_sizeof(); use sizeof() instead. - Use a consistent style for (sizeof type) and (sizeof (array)) - Cleanup of png_set_filler(). This function does very different things on - read and write. In libpng 1.6 the two cases can be distinguished and - considerable code cleanup, and extra error checking, is possible. This - makes calls on the write side that have no effect be ignored with a - png_app_error(), which can be disabled in the app using - png_set_benign_errors(), and removes the spurious use of usr_channels - on the read side. - Insist on autotools 1.12.1 for git builds because there are security issues - with 1.12 and insisting on anything less would allow 1.12 to be used. - Removed info_ptr->signature[8] from WRITE-only builds. - Add some conditions for compiling png_fixed(). This is a small function - but it requires "-lm" on some platforms. - Cause pngtest --strict to fail on any warning from libpng (not just errors) - and cause it not to fail at the comparison step if libpng lacks support - for writing chunks that it reads from the input (currently only implemented - for compressed text chunks). - Make all three "make check" test programs work without READ or WRITE support. - Now "make check" will succeed even if libpng is compiled with -DPNG_NO_READ - or -DPNG_NO_WRITE. The tests performed are reduced, but the basic reading - and writing of a PNG file is always tested by one or more of the tests. - Consistently use strlen(), memset(), memcpy(), and memcmp() instead of the - png_strlen(), png_memset(), png_memcpy(), and png_memcmp() macros. - Removed the png_sizeof(), png_strlen(), png_memset(), png_memcpy(), and - png_memcmp() macros. - Work around gcc 3.x and Microsoft Visual Studio 2010 complaints. Both object - to the split initialization of num_chunks. - -Version 1.6.0beta28 [August 29, 2012] - Unknown handling fixes and clean up. This adds more correct option - control of the unknown handling, corrects the pre-existing bug where - the per-chunk 'keep' setting is ignored and makes it possible to skip - IDAT chunks in the sequential reader (broken in earlier 1.6 versions). - There is a new test program, test-unknown.c, which is a work in progress - (not currently part of the test suite). Comments in the header files now - explain how the unknown handling works. - Allow fine grain control of unknown chunk APIs. This change allows - png_set_keep_unknown_chunks() to be turned off if not required and causes - both read and write to behave appropriately (on read this is only possible - if the user callback is used to handle unknown chunks). The change - also removes the support for storing unknown chunks in the info_struct - if the only unknown handling enabled is via the callback, allowing libpng - to be configured with callback reading and none of the unnecessary code. - Corrected fix for unknown handling in pngtest. This reinstates the - libpng handling of unknown chunks other than vpAg and sTER (including - unsafe-to-copy chunks which were dropped before) and eliminates the - repositioning of vpAg and sTER in pngtest.png by changing pngtest.png - (so the chunks are where libpng would put them). - Added "tunknown" test and corrected a logic error in png_handle_unknown() - when SAVE support is absent. Moved the shell test scripts for - contrib/libtests from the libpng top directory to contrib/libtests. - png_handle_unknown() must always read or skip the chunk, if - SAVE_UNKNOWN_CHUNKS is turned off *and* the application does not set - a user callback an unknown chunk will not be read, leading to a read - error, which was revealed by the "tunknown" test. - Cleaned up and corrected ICC profile handling. - contrib/libtests/makepng: corrected 'rgb' and 'gray' cases. profile_error - messages could be truncated; made a correct buffer size calculation and - adjusted pngerror.c appropriately. png_icc_check_* checking improved; - changed the functions to receive the correct color type of the PNG on read - or write and check that it matches the color space of the profile (despite - what the comments said before, there is danger in assuming the app will - cope correctly with an RGB profile on a grayscale image and, since it - violates the PNG spec, allowing it is certain to produce inconsistent - app behavior and might even cause app crashes.) Check that profiles - contain the tags needed to process the PNG (tags all required by the ICC - spec). Removed unused PNG_STATIC from pngpriv.h. - -Version 1.6.0beta29 [September 4, 2012] - Fixed the simplified API example programs to add the *colormap parameter - to several of he API and improved the error message if the version field - is not set. - Added contrib/examples/* to the *.zip and *.7z distributions. - Updated simplified API synopses and description of the png_image structure - in the manual. - Made makepng and pngtest produce identical PNGs, add "--relaxed" option - to pngtest. The "--relaxed" option turns off the benign errors that are - enabled by default in pre-RC builds. makepng can now write ICC profiles - where the length has not been extended to a multiple of 4, and pngtest - now intercepts all libpng errors, allowing the previously-introduced - "--strict test" on no warnings to actually work. - Improved ICC profile handling including cHRM chunk generation and fixed - Cygwin+MSVC build errors. The ICC profile handling now includes more - checking. Several errors that caused rejection of the profile are now - handled with a warning in such a way that the invalid profiles will be - read by default in release (but not pre-RC) builds but will not be - written by default. The easy part of handling the cHRM chunk is written, - where the ICC profile contains the required data. The more difficult - part plus guessing a gAMA value requires code to pass selected RGB values - through the profile. - -Version 1.6.0beta30 [October 24, 2012] - Changed ICC profile matrix/vector types to not depend on array type rules. - By the ANSI-C standard the new types should be identical to the previous - versions, and all known versions of gcc tested with the previous versions - except for GCC-4.2.1 work with this version. The change makes the ANSI-C - rule that const applied to an array of elements applies instead to the - elements in the array moot by explicitly applying const to the base - elements of the png_icc_matrix and png_icc_vector types. The accidental - (harmless) 'const' previously applied to the parameters of two of the - functions have also been removed. - Added a work around for GCC 4.2 optimization bug. - Marked the broken (bad white point) original HP sRGB profiles correctly and - correct comments. - Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7 - Use /MDd for vstudio debug builds. Also added pngunkown to the vstudio - builds, fixed build errors and corrected a minor exit code error in - pngvalid if the 'touch' file name is invalid. - Add updated WARNING file to projects/vstudio from libpng 1.5/vstudio - Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in - pngrtran.c (Domani Hannes). - -Version 1.6.0beta31 [November 1, 2012] - Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30. - Made pngvalid so that it will build outside the libpng source tree. - Made builds -DPNG_NO_READ_GAMMA compile (the unit tests still fail). - Made PNG_NO_READ_GAMMA switch off interfaces that depend on READ_GAMMA. - Prior to 1.6.0 switching off READ_GAMMA did unpredictable things to the - interfaces that use it (specifically, png_do_background in 1.4 would - simply display composite for grayscale images but do composition - with the incorrect arithmetic for color ones). In 1.6 the semantic - of -DPNG_NO_READ_GAMMA is changed to simply disable any interface that - depends on it; this obliges people who set it to consider whether they - really want it off if they happen to use any of the interfaces in - question (typically most users who disable it won't). - Fixed GUIDs in projects/vstudio. Some were duplicated or missing, - resulting in VS2010 having to update the files. - Removed non-working ICC profile support code that was mostly added to - libpng-1.6.0beta29 and beta30. There was too much code for too little - gain; implementing full ICC color correction may be desireable but is left - up to applications. - -Version 1.6.0beta32 [November 25, 2012] - Fixed an intermittent SEGV in pngstest due to an uninitialized array element. - Added the ability for contrib/libtests/makepng.c to make a PNG with just one - color. This is useful for debugging pngstest color inaccuracy reports. - Fixed error checking in the simplified write API (Olaf van der Spek) - Made png_user_version_check() ok to use with libpng version 1.10.x and later. - -Version 1.6.0beta33 [December 15, 2012] - Fixed typo in png.c (PNG_SET_CHUNK_MALLOC_MAX should be PNG_CHUNK_MALLOC_MAX) - that causes the MALLOC_MAX limit not to work (John Bowler) - Change png_warning() to png_app_error() in pngwrite.c and comment the - fall-through condition. - Change png_warning() to png_app_warning() in png_write_tRNS(). - Rearranged the ARM-NEON optimizations: Isolated the machine specific code - to the hardware subdirectory and added comments to pngrutil.c so that - implementors of other optimizations know what to do. - Fixed cases of unquoted DESTDIR in Makefile.am - Rebuilt Makefile.in, etc., with autoconf-2.69 and automake-1.12.5. - -Version 1.6.0beta34 [December 19, 2012] - Cleaned up whitespace in the synopsis portion of the manpage "libpng.3" - Disassembled the version number in scripts/options.awk (necessary for - building on SunOs). - -Version 1.6.0beta35 [December 23, 2012] - Made default Zlib compression settings be configurable. This adds #defines to - pnglibconf.h to control the defaults. - Fixed Windows build issues, enabled ARM compilation. Various warnings issued - by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old - GCCs.) ARM support is enabled by default in zlib.props (unsupported by - Microsoft) and ARM compilation is made possible by deleting the check for - x86. The test programs cannot be run because they are not signed. - -Version 1.6.0beta36 [January 2, 2013] - Discontinued distributing libpng-1.x.x.tar.bz2. - Discontinued distributing libpng-1.7.0-1.6.0-diff.txt and similar. - Rebuilt configure with autoconf-2.69 (inadvertently not done in beta33) - Fixed 'make distcheck' on SUN OS - libpng.so was not being removed - -Version 1.6.0beta37 [January 10, 2013] - Fixed conceivable but difficult to repro overflow. Also added two test - programs to generate and test a PNG which should have the problem. - -Version 1.6.0beta39 [January 19, 2013] - Again corrected attempt at overflow detection in png_set_unknown_chunks() - (CVE-2013-7353). Added overflow detection in png_set_sPLT() and - png_set_text_2() (CVE-2013-7354). - -Version 1.6.0beta40 [January 20, 2013] - Use consistent handling of overflows in text, sPLT and unknown png_set_* APIs - -Version 1.6.0rc01 [January 26, 2013] - No changes. - -Version 1.6.0rc02 [February 4, 2013] - Added png_get_palette_max() function. - -Version 1.6.0rc03 [February 5, 2013] - Fixed the png_get_palette_max API. - -Version 1.6.0rc04 [February 7, 2013] - Turn serial tests back on (recently turned off by autotools upgrade). - -Version 1.6.0rc05 [February 8, 2013] - Update manual about png_get_palette_max(). - -Version 1.6.0rc06 [February 9, 2013] - Fixed missing dependency in --prefix builds The intermediate - internal 'prefix.h' file can only be generated correctly after - pnglibconf.h, however the dependency was not in Makefile.am. The - symptoms are unpredictable depending on the order make chooses to - build pngprefix.h and pnglibconf.h, often the error goes unnoticed - because there is a system pnglibconf.h to use instead. - -Version 1.6.0rc07 [February 10, 2013] - Enclosed the new png_get_palette_max in #ifdef PNG_GET_PALETTE_MAX_SUPPORTED - block, and revised pnglibconf.h and pnglibconf.h.prebuilt accordingly. - -Version 1.6.0rc08 [February 10, 2013] - Fix typo in png.h #ifdef - -Version 1.6.0 [February 14, 2013] - No changes. - -Version 1.6.1beta01 [February 16, 2013] - Made symbol prefixing work with the ARM neon optimizations. Also allow - pngpriv.h to be included for preprocessor definitions only, so it can - be used in non-C/C++ files. Back ported from libpng 1.7. - Made sRGB check numbers consistent. - Ported libpng 1.5 options.awk/dfn file handling to 1.6, fixed one bug. - Removed cc -E workround, corrected png_get_palette_max API Tested on - SUN OS cc 5.9, which demonstrates the tokenization problem previously - avoided by using /lib/cpp. Since all .dfn output is now protected in - double quotes unless it is to be macro substituted the fix should - work everywhere. - Enabled parallel tests - back ported from libpng-1.7. - scripts/pnglibconf.dfa formatting improvements back ported from libpng17. - Fixed a race condition in the creation of the build 'scripts' directory - while building with a parallel make. - Use approved/supported Android method to check for NEON, use Linux/POSIX - 1003.1 API to check /proc/self/auxv avoiding buffer allocation and other - library calls (ported from libpng15). - -Version 1.6.1beta02 [February 19, 2013] - Use parentheses more consistently in "#if defined(MACRO)" tests. - Folded long lines. - Reenabled code to allow zero length PLTE chunks for MNG. - -Version 1.6.1beta03 [February 22, 2013] - Fixed ALIGNED_MEMORY support. - Added a new configure option: - --enable-arm-neon=always will stop the run-time checks. New checks - within arm/arm_init.c will cause the code not to be compiled unless - __ARM_NEON__ is set. This should make it fail safe (if someone asks - for it on then the build will fail if it can't be done.) - Updated the INSTALL document. - -Version 1.6.1beta04 [February 27, 2013] - Revised INSTALL to recommend using CPPFLAGS instead of INCLUDES. - Revised scripts/makefile.freebsd to respect ZLIBLIB and ZLIBINC. - Revised scripts/dfn.awk to work with the buggy MSYS awk that has trouble - with CRLF line endings. - -Version 1.6.1beta05 [March 1, 2013] - Avoid a possible memory leak in contrib/gregbook/readpng.c - -Version 1.6.1beta06 [March 4, 2013] - Better documentation of unknown handling API interactions. - Corrected Android builds and corrected libpng.vers with symbol - prefixing. It also makes those tests compile and link on Android. - Added an API png_set_option() to set optimization options externally, - providing an alternative and general solution for the non-portable - run-time tests used by the ARM Neon code, using the PNG_ARM_NEON option. - The order of settings vs options in pnglibconf.h is reversed to allow - settings to depend on options and options can now set (or override) the - defaults for settings. - -Version 1.6.1beta07 [March 7, 2013] - Corrected simplified API default gamma for color-mapped output, added - a flag to change default. In 1.6.0 when the simplified API was used - to produce color-mapped output from an input image with no gamma - information the gamma assumed for the input could be different from - that assumed for non-color-mapped output. In particular 16-bit depth - input files were assumed to be sRGB encoded, whereas in the 'direct' - case they were assumed to have linear data. This was an error. The - fix makes the simplified API treat all input files the same way and - adds a new flag to the png_image::flags member to allow the - application/user to specify that 16-bit files contain sRGB data - rather than the default linear. - Fixed bugs in the pngpixel and makepng test programs. - -Version 1.6.1beta08 [March 7, 2013] - Fixed CMakelists.txt to allow building a single variant of the library - (Claudio Bley): - Introduced a PNG_LIB_TARGETS variable that lists all activated library - targets. It is an error if this variable ends up empty, ie. you have - to build at least one library variant. - Made the *_COPY targets only depend on library targets actually being build. - Use PNG_LIB_TARGETS to unify a code path. - Changed the CREATE_SYMLINK macro to expect the full path to a file as the - first argument. When symlinking the filename component of that path is - determined and used as the link target. - Use copy_if_different in the CREATE_SYMLINK macro. - -Version 1.6.1beta09 [March 13, 2013] - Eliminated two warnings from the Intel C compiler. The warnings are - technically valid, although a reasonable treatment of division would - show it to be incorrect. - -Version 1.6.1rc01 [March 21, 2013] - No changes. - -Version 1.6.1 [March 28, 2013] - No changes. - -Version 1.6.2beta01 [April 14, 2013] - Updated documentation of 1.5.x to 1.6.x changes in iCCP chunk handling. - Fixed incorrect warning of excess deflate data. End condition - the - warning would be produced if the end of the deflate stream wasn't read - in the last row. The warning is harmless. - Corrected the test on user transform changes on read. It was in the - png_set of the transform function, but that doesn't matter unless the - transform function changes the rowbuf size, and that is only valid if - transform_info is called. - Corrected a misplaced closing bracket in contrib/libtests/pngvalid.c - (Flavio Medeiros). - Corrected length written to uncompressed iTXt chunks (Samuli Suominen). - Bug was introduced in libpng-1.6.0. - -Version 1.6.2rc01 [April 18, 2013] - Added contrib/tools/fixitxt.c, to repair the erroneous iTXt chunk length - written by libpng-1.6.0 and 1.6.1. - Disallow storing sRGB information when the sRGB is not supported. - -Version 1.6.2rc02 [April 18, 2013] - Merge pngtest.c with libpng-1.7.0 - -Version 1.6.2rc03 [April 22, 2013] - Trivial spelling cleanup. - -Version 1.6.2rc04 and 1.6.2rc05 [omitted] - -Version 1.6.2rc06 [April 24, 2013] - Reverted to version 1.6.2rc03. Recent changes to arm/neon support - have been ported to libpng-1.7.0beta09 and will reappear in version - 1.6.3beta01. - -Version 1.6.2 [April 25, 2013] - No changes. - -Version 1.6.3beta01 [April 25, 2013] - Revised stack marking in arm/filter_neon.S and configure.ac. - Ensure that NEON filter stuff is completely disabled when switched 'off'. - Previously the ARM NEON specific files were still built if the option - was switched 'off' as opposed to being explicitly disabled. - -Version 1.6.3beta02 [April 26, 2013] - Test for 'arm*' not just 'arm' in the host_cpu configure variable. - Rebuilt the configure scripts. - -Version 1.6.3beta03 [April 30, 2013] - Expanded manual paragraph about writing private chunks, particularly - the need to call png_set_keep_unknown_chunks() when writing them. - Avoid dereferencing NULL pointer possibly returned from - png_create_write_struct() (Andrew Church). - -Version 1.6.3beta05 [May 9, 2013] - Calculate our own zlib windowBits when decoding rather than trusting the - CMF bytes in the PNG datastream. - Added an option to force maximum window size for inflating, which was - the behavior of libpng15 and earlier, via a new PNG_MAXIMUM_INFLATE_WINDOW - option for png_set_options(). - Added png-fix-itxt and png-fix-too-far-back to the built programs and - removed warnings from the source code and timepng that are revealed as - a result. - Detect wrong libpng versions linked to png-fix-too-far-back, which currently - only works with libpng versions that can be made to reliably fail when - the deflate data contains an out-of-window reference. This means only - 1.6 and later. - Fixed gnu issues: g++ needs a static_cast, gcc 4.4.7 has a broken warning - message which it is easier to work round than ignore. - Updated contrib/pngminus/pnm2png.c (Paul Stewart): - Check for EOF - Ignore "#" delimited comments in input file to pnm2png.c. - Fixed whitespace handling - Added a call to png_set_packing() - Initialize dimension values so if sscanf fails at least we have known - invalid values. - Attempt to detect configuration issues with png-fix-too-far-back, which - requires both the correct libpng and the correct zlib to function - correctly. - Check ZLIB_VERNUM for mismatches, enclose #error in quotes - Added information in the documentation about problems with and fixes for - the bad CRC and bad iTXt chunk situations. - -Version 1.6.3beta06 [May 12, 2013] - Allow contrib/pngminus/pnm2png.c to compile without WRITE_INVERT and - WRITE_PACK supported (writes error message that it can't read P1 or - P4 PBM files). - Improved png-fix-too-far-back usage message, added --suffix option. - Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the - right zlib header files. - Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile - -Version 1.6.3beta07 [June 8, 2013] - Removed a redundant test in png_set_IHDR(). - Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt) - Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt - Enclose the prototypes for the simplified write API in - #ifdef PNG_STDIO_SUPPORTED/#endif - Make ARM NEON support work at compile time (not just configure time). - This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when - using a compiler that compiles for multiple architectures at one time. - Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from - pnglibconf.h, allowing more of the decisions to be made internally - (pngpriv.h) during the compile. Without this, symbol prefixing is broken - under certain circumstances on ARM platforms. Now only the API parts of - the optimizations ('check' vs 'api') are exposed in the public header files - except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the - decision about whether or not to use the optimizations. - Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage. - Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test - on __ARM_NEON__ from configure time to compile time. This breaks symbol - prefixing because the definition of the special png_init_filter_functions - call was hidden at configure time if the relevant compiler arguments are - passed in CFLAGS as opposed to CC. This change attempts to avoid all - the confusion that would result by declaring the init function even when - it is not used, so that it will always get prefixed. - -Version 1.6.3beta08 [June 18, 2013] - Revised libpng.3 so that "doclifter" can process it. - -Version 1.6.3beta09 [June 27, 2013] - Revised example.c to illustrate use of PNG_DEFAULT_sRGB and PNG_GAMMA_MAC_18 - as parameters for png_set_gamma(). These have been available since - libpng-1.5.4. - Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it - to check all compressed chunks known to libpng. - -Version 1.6.3beta10 [July 5, 2013] - Updated documentation to show default behavior of benign errors correctly. - Only compile ARM code when PNG_READ_SUPPORTED is defined. - Fixed undefined behavior in contrib/tools/pngfix.c and added new strip - option. pngfix relied on undefined behavior and even a simple change from - gcc to g++ caused it to fail. The new strip option 'unsafe' has been - implemented and is the default if --max is given. Option names have - been clarified, with --strip=transform now stripping the bKGD chunk, - which was stripped previously with --strip=unused. - Added all documented chunk types to pngpriv.h - Unified pngfix.c source with libpng17. - -Version 1.6.3rc01 [July 11, 2013] - No changes. - -Version 1.6.3 [July 18, 2013] - Revised manual about changes in iTXt chunk handling made in libpng-1.6.0. - Added "/* SAFE */" comments in pngrutil.c and pngrtran.c where warnings - may be erroneously issued by code-checking applications. - -Version 1.6.4beta01 [August 21, 2013] - Added information about png_set_options() to the manual. - Delay calling png_init_filter_functions() until a row with nonzero filter - is found. - -Version 1.6.4beta02 [August 30, 2013] - Fixed inconsistent conditional compilation of png_chunk_unknown_handling() - prototype, definition, and usage. Made it depend on - PNG_HANDLE_AS_UNKNOWN_SUPPORTED everywhere. - -Version 1.6.4rc01 [September 5, 2013] - No changes. - -Version 1.6.4 [September 12, 2013] - No changes. - -Version 1.6.5 [September 14, 2013] - Removed two stray lines of code from arm/arm_init.c. - -Version 1.6.6 [September 16, 2013] - Removed two stray lines of code from arm/arm_init.c, again. - -Version 1.6.7beta01 [September 30, 2013] - Revised unknown chunk code to correct several bugs in the NO_SAVE_/NO_WRITE - combination - Allow HANDLE_AS_UNKNOWN to work when other options are configured off. Also - fixed the pngminim makefiles to work when $(MAKEFLAGS) contains stuff - which terminates the make options (as by default in recent versions of - Gentoo). - Avoid up-cast warnings in pngvalid.c. On ARM the alignment requirements of - png_modifier are greater than that of png_store and as a consequence - compilation of pngvalid.c results in a warning about increased alignment - requirements because of the bare cast to (png_modifier*). The code is safe, - because the pointer is known to point to a stack allocated png_modifier, - but this change avoids the warning. - Fixed default behavior of ARM_NEON_API. If the ARM NEON API option was - compiled without the CHECK option it defaulted to on, not off. - Check user callback behavior in pngunknown.c. Previous versions compiled - if SAVE_UNKNOWN was not available but did nothing since the callback - was never implemented. - Merged pngunknown.c with 1.7 version and back ported 1.7 improvements/fixes - -Version 1.6.7beta02 [October 12, 2013] - Made changes for compatibility with automake 1.14: - 1) Added the 'compile' program to the list of programs that must be cleaned - in autogen.sh - 2) Added 'subdir-objects' which causes .c files in sub-directories to be - compiled such that the corresponding .o files are also in the - sub-directory. This is because automake 1.14 warns that the - current behavior of compiling to the top level directory may be removed - in the future. - 3) Updated dependencies on pnglibconf.h to match the new .o locations and - added all the files in contrib/libtests and contrib/tools that depend - on pnglibconf.h - 4) Added 'BUILD_SOURCES = pnglibconf.h'; this is the automake recommended - way of handling the dependencies of sources that are machine generated; - unfortunately it only works if the user does 'make all' or 'make check', - so the dependencies (3) are still required. - Cleaned up (char*) casts of zlib messages. The latest version of the Intel C - compiler complains about casting a string literal as (char*), so copied the - treatment of z_const from the library code into pngfix.c - Simplified error message code in pngunknown. The simplification has the - useful side effect of avoiding a bogus warning generated by the latest - version of the Intel C compiler (it objects to - condition ? string-literal : string-literal). - Make autogen.sh work with automake 1.13 as well as 1.14. Do this by always - removing the 1.14 'compile' script but never checking for it. - -Version 1.6.7beta03 [October 19, 2013] - Added ARMv8 support (James Yu ). Added file - arm/filter_neon_intrinsics.c; enable with -mfpu=neon. - Revised pngvalid to generate size images with as many filters as it can - manage, limited by the number of rows. - Cleaned up ARM NEON compilation handling. The tests are now in pngpriv.h - and detect the broken GCC compilers. - -Version 1.6.7beta04 [October 26, 2013] - Allow clang derived from older GCC versions to use ARM intrinsics. This - causes all clang builds that use -mfpu=neon to use the intrinsics code, - not the assembler code. This has only been tested on iOS 7. It may be - necessary to exclude some earlier clang versions but this seems unlikely. - Changed NEON implementation selection mechanism. This allows assembler - or intrinsics to be turned on at compile time during the build by defining - PNG_ARM_NEON_IMPLEMENTATION to the correct value (2 or 1). This macro - is undefined by default and the build type is selected in pngpriv.h. - -Version 1.6.7rc01 [November 2, 2013] - No changes. - -Version 1.6.7rc02 [November 7, 2013] - Fixed #include in filter_neon_intrinsics.c and ctype macros. The ctype char - checking macros take an unsigned char argument, not a signed char. - -Version 1.6.7 [November 14, 2013] - No changes. - -Version 1.6.8beta01 [November 24, 2013] - Moved prototype for png_handle_unknown() in pngpriv.h outside of - the #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED/#endif block. - Added "-Wall" to CFLAGS in contrib/pngminim/*/makefile - Conditionally compile some unused functions reported by -Wall in - pngminim. - Fixed 'minimal' builds. Various obviously useful minimal configurations - don't build because of missing contrib/libtests test programs and - overly complex dependencies in scripts/pnglibconf.dfa. This change - adds contrib/conftest/*.dfa files that can be used in automatic build - scripts to ensure that these configurations continue to build. - Enabled WRITE_INVERT and WRITE_PACK in contrib/pngminim/encoder. - Fixed pngvalid 'fail' function declaration on the Intel C Compiler. - This reverts to the previous 'static' implementation and works round - the 'unused static function' warning by using PNG_UNUSED(). - -Version 1.6.8beta02 [November 30, 2013] - Removed or marked PNG_UNUSED some harmless "dead assignments" reported - by clang scan-build. - Changed tabs to 3 spaces in png_debug macros and changed '"%s"m' - to '"%s" m' to improve portability among compilers. - Changed png_free_default() to free() in pngtest.c - -Version 1.6.8rc01 [December 12, 2013] - Tidied up pngfix inits and fixed pngtest no-write builds. - -Version 1.6.8rc02 [December 14, 2013] - Handle zero-length PLTE chunk or NULL palette with png_error() - instead of png_chunk_report(), which by default issues a warning - rather than an error, leading to later reading from a NULL pointer - (png_ptr->palette) in png_do_expand_palette(). This is CVE-2013-6954 - and VU#650142. Libpng-1.6.1 through 1.6.7 are vulnerable. - Libpng-1.6.0 and earlier do not have this bug. - -Version 1.6.8 [December 19, 2013] - No changes. - -Version 1.6.9beta01 [December 26, 2013] - Bookkeeping: Moved functions around (no changes). Moved transform - function definitions before the place where they are called so that - they can be made static. Move the intrapixel functions and the - grayscale palette builder out of the png?tran.c files. The latter - isn't a transform function and is no longer used internally, and the - former MNG specific functions are better placed in pngread/pngwrite.c - Made transform implementation functions static. This makes the internal - functions called by png_do_{read|write}_transformations static. On an - x86-64 DLL build (Gentoo Linux) this reduces the size of the text - segment of the DLL by 1208 bytes, about 0.6%. It also simplifies - maintenance by removing the declarations from pngpriv.h and allowing - easier changes to the internal interfaces. - Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69 - in the tar distributions. - -Version 1.6.9beta02 [January 1, 2014] - Added checks for libpng 1.5 to pngvalid.c. This supports the use of - this version of pngvalid in libpng 1.5 - Merged with pngvalid.c from libpng-1.7 changes to create a single - pngvalid.c - Removed #error macro from contrib/tools/pngfix.c (Thomas Klausner). - Merged pngrio.c, pngtrans.c, pngwio.c, and pngerror.c with libpng-1.7.0 - Merged libpng-1.7.0 changes to make no-interlace configurations work - with test programs. - Revised pngvalid.c to support libpng 1.5, which does not support the - PNG_MAXIMUM_INFLATE_WINDOW option, so #define it out when appropriate in - pngvalid.c - Allow unversioned links created on install to be disabled in configure. - In configure builds 'make install' changes/adds links like png.h - and libpng.a to point to the newly installed, versioned, files (e.g. - libpng17/png.h and libpng17.a). Three new configure options and some - rearrangement of Makefile.am allow creation of these links to be disabled. - -Version 1.6.9beta03 [January 10, 2014] - Removed potentially misleading warning from png_check_IHDR(). - -Version 1.6.9beta04 [January 20, 2014] - Updated scripts/makefile.* to use CPPFLAGS (Cosmin). - Added clang attribute support (Cosmin). - -Version 1.6.9rc01 [January 28, 2014] - No changes. - -Version 1.6.9rc02 [January 30, 2014] - Quiet an uninitialized memory warning from VC2013 in png_get_png(). - -Version 1.6.9 [February 6, 2014] - -Version 1.6.10beta01 [February 9, 2014] - Backported changes from libpng-1.7.0beta30 and beta31: - Fixed a large number of instances where PNGCBAPI was omitted from - function definitions. - Added pngimage test program for png_read_png() and png_write_png() - with two new test scripts. - Removed dependence on !PNG_READ_EXPAND_SUPPORTED for calling - png_set_packing() in png_read_png(). - Fixed combination of ~alpha with shift. On read invert alpha, processing - occurred after shift processing, which causes the final values to be - outside the range that should be produced by the shift. Reversing the - order on read makes the two transforms work together correctly and mirrors - the order used on write. - Do not read invalid sBIT chunks. Previously libpng only checked sBIT - values on write, so a malicious PNG writer could therefore cause - the read code to return an invalid sBIT chunk, which might lead to - application errors or crashes. Such chunks are now skipped (with - chunk_benign_error). - Make png_read_png() and png_write_png() prototypes in png.h depend - upon PNG_READ_SUPPORTED and PNG_WRITE_SUPPORTED. - Support builds with unsupported PNG_TRANSFORM_* values. All of the - PNG_TRANSFORM_* values are always defined in png.h and, because they - are used for both read and write in some cases, it is not reliable - to #if out ones that are totally unsupported. This change adds error - detection in png_read_image() and png_write_image() to do a - png_app_error() if the app requests something that cannot be done - and it adds corresponding code to pngimage.c to handle such options - by not attempting to test them. - -Version 1.6.10beta02 [February 23, 2014] - Moved redefines of png_error(), png_warning(), png_chunk_error(), - and png_chunk_warning() from pngpriv.h to png.h to make them visible - to libpng-calling applications. - Moved OS dependent code from arm/arm_init.c, to allow the included - implementation of the ARM NEON discovery function to be set at - build-time and provide sample implementations from the current code in the - contrib/arm-neon subdirectory. The __linux__ code has also been changed to - compile and link on Android by using /proc/cpuinfo, and the old linux code - is in contrib/arm-neon/linux-auxv.c. The new code avoids POSIX and Linux - dependencies apart from opening /proc/cpuinfo and is C90 compliant. - Check for info_ptr == NULL early in png_read_end() so we don't need to - run all the png_handle_*() and depend on them to return if info_ptr == NULL. - This improves the performance of png_read_end(png_ptr, NULL) and makes - it more robust against future programming errors. - Check for __has_extension before using it in pngconf.h, to - support older Clang versions (Jeremy Sequoia). - Treat CRC error handling with png_set_crc_action(), instead of with - png_set_benign_errors(), which has been the case since libpng-1.6.0beta18. - Use a user warning handler in contrib/gregbook/readpng2.c instead of default, - so warnings will be put on stderr even if libpng has CONSOLE_IO disabled. - Added png_ptr->process_mode = PNG_READ_IDAT_MODE in png_push_read_chunk - after recognizing the IDAT chunk, which avoids an infinite loop while - reading a datastream whose first IDAT chunk is of zero-length. - This fixes CERT VU#684412 and CVE-2014-0333. - Don't recognize known sRGB profiles as sRGB if they have been hacked, - but don't reject them and don't issue a copyright violation warning. - -Version 1.6.10beta03 [February 25, 2014] - Moved some documentation from png.h to libpng.3 and libpng-manual.txt - Minor editing of contrib/arm-neon/README and contrib/examples/*.c - -Version 1.6.10rc01 [February 27, 2014] - Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS - and PNG_USR_CONFIG -> PNG_USER_CONFIG). - -Version 1.6.10rc02 [February 28, 2014] - Removed unreachable return statement after png_chunk_error() - in pngrutil.c - -Version 1.6.10rc03 [March 4, 2014] - Un-deprecated png_data_freer(). - -Version 1.6.10 [March 6, 2014] - No changes. - -Version 1.6.11beta01 [March 17, 2014] - Use "if (value != 0)" instead of "if (value)" consistently. - Changed ZlibSrcDir from 1.2.5 to 1.2.8 in projects/vstudio. - Moved configuration information from the manual to the INSTALL file. - -Version 1.6.11beta02 [April 6, 2014] - Removed #if/#else/#endif from inside two pow() calls in pngvalid.c because - they were handled improperly by Portland Group's PGI-14.1 - PGI-14.3 - when using its "__builtin_pow()" function. - Silence 'unused parameter' build warnings (Cosmin Truta). - $(CP) is now used alongside $(RM_F). Also, use 'copy' instead of 'cp' - where applicable, and applied other minor makefile changes (Cosmin). - Don't warn about invalid dimensions exceeding user limits (Cosmin). - Allow an easy replacement of the default pre-built configuration - header with a custom header, via the make PNGLIBCONF_H_PREBUILT - macro (Cosmin). - -Version 1.6.11beta03 [April 6, 2014] - Fixed a typo in pngrutil.c, introduced in libpng-1.5.6, that interferes - with "blocky" expansion of sub-8-bit interlaced PNG files (Eric Huss). - Optionally use __builtin_bswap16() in png_do_swap(). - -Version 1.6.11beta04 [April 19, 2014] - Made progressive reading of interlaced images consistent with the - behavior of the sequential reader and consistent with the manual, by - moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks. The - row_callback now receives the proper pass number and unexpanded rows, when - png_combine_row() isn't built or used, and png_set_interlace_handling() - is not called. - Allow PNG_sRGB_PROFILE_CHECKING = (-1) to mean no sRGB profile checking. - -Version 1.6.11beta05 [April 26, 2014] - Do not reject ICC V2 profiles that lack padding (Kai-Uwe Behrmann). - Relocated closing bracket of the sRGB profile test loop to avoid getting - "Not recognizing known sRGB profile that has been edited" warning for - ICC V2 profiles that lack the MD5 signature in the profile header. - -Version 1.6.11beta06 [May 19, 2014] - Added PNG_SKIP_sRGB_CHECK_PROFILE choice for png_set_option(). - -Version 1.6.11rc01 [May 27, 2014] - No changes. - -Version 1.6.11rc02 [June 3, 2014] - Test ZLIB_VERNUM instead of PNG_ZLIB_VERNUM in contrib/tools/pngfix.c - -Version 1.6.11 [June 5, 2014] - No changes. - -Version 1.6.12rc01 [June 6, 2014] - Relocated new code from 1.6.11beta06 in png.c to a point after the - declarations (Max Stepin). - -Version 1.6.12rc02 [June 7, 2014] - Changed file permissions of contrib/tools/intgamma.sh, - test-driver, and compile from 0644 to 0755 (Cosmin). - -Version 1.6.12rc03 [June 8, 2014] - Ensure "__has_attribute()" macro exists before trying to use it with - old clang compilers (MacPorts Ticket #43939). - -Version 1.6.12 [June 12, 2014] - No changes. - -Version 1.6.13beta01 [July 4, 2014] - Quieted -Wsign-compare and -Wclobber compiler warnings in - contrib/pngminus/*.c - Added "(void) png_ptr;" where needed in contrib/gregbook to quiet - compiler complaints about unused pointers. - Split a long output string in contrib/gregbook/rpng2-x.c. - Added "PNG_SET_OPTION" requirement for sRGB chunk support to pnglibconf.dfa, - Needed for write-only support (John Bowler). - Changed "if defined(__ARM_NEON__)" to - "if (defined(__ARM_NEON__) || defined(__ARM_NEON))" (James Wu). - Fixed clang no-warning builds: png_digit was defined but never used. - -Version 1.6.13beta02 [July 21, 2014] - Fixed an incorrect separator ("/" should be "\") in scripts/makefile.vcwin32 - (bug report from Wolfgang S. Kechel). Bug was introduced in libpng-1.6.11. - Also fixed makefile.bc32, makefile.bor, makefile.msc, makefile.intel, and - makefile.tc3 similarly. - -Version 1.6.13beta03 [August 3, 2014] - Removed scripts/makefile.elf. It has not worked since libpng-1.5.0beta14 - due to elimination of the PNG_FUNCTION_EXPORT and PNG_DATA_EXPORT - definitions from pngconf.h. - Ensure that CMakeLists.txt makes the target "lib" directory before making - symbolic link into it (SourceForge bug report #226 by Rolf Timmermans). - -Version 1.6.13beta04 [August 8, 2014] - Added opinion that the ECCN (Export Control Classification Number) for - libpng is EAR99 to the README file. - Eliminated use of "$<" in makefile explicit rules, when copying - $PNGLIBCONF_H_PREBUILT. This does not work on some versions of make; - bug introduced in libpng version 1.6.11. - -Version 1.6.13rc01 [August 14, 2014] - Made "ccopts" agree with "CFLAGS" in scripts/makefile.hp* and makefile.*sunu - -Version 1.6.13 [August 21, 2014] - No changes. - -Version 1.6.14beta01 [September 14, 2014] - Guard usage of png_ptr->options with #ifdef PNG_SET_OPTION_SUPPORTED. - Do not build contrib/tools/pngfix.c when PNG_SETJMP_NOT_SUPPORTED, - to allow "make" to complete without setjmp support (bug report by - Claudio Fontana) - Add "#include " to contrib/tools/pngfix.c (John Bowler) - -Version 1.6.14beta02 [September 18, 2014] - Use nanosleep() instead of usleep() in contrib/gregbook/rpng2-x.c - because usleep() is deprecated. - Define usleep() in contrib/gregbook/rpng2-x.c if not already defined - in unistd.h and nanosleep() is not available; fixes error introduced - in libpng-1.6.13. - Disable floating point exception handling in pngvalid.c when - PNG_FLOATING_ARITHMETIC is not supported (bug report by "zootus - at users.sourceforge.net"). - -Version 1.6.14beta03 [September 19, 2014] - Define FE_DIVBYZERO, FE_INVALID, and FE_OVERFLOW in pngvalid.c if not - already defined. Revert floating point exception handling in pngvalid.c - to version 1.6.14beta01 behavior. - -Version 1.6.14beta04 [September 27, 2014] - Fixed incorrect handling of the iTXt compression flag in pngrutil.c - (bug report by Shunsaku Hirata). Bug was introduced in libpng-1.6.0. - -Version 1.6.14beta05 [October 1, 2014] - Added "option READ_iCCP enables READ_COMPRESSED_TEXT" to pnglibconf.dfa - -Version 1.6.14beta06 [October 5, 2014] - Removed unused "text_len" parameter from private function png_write_zTXt(). - Conditionally compile some code in png_deflate_claim(), when - PNG_WARNINGS_SUPPORTED and PNG_ERROR_TEXT_SUPPORTED are disabled. - Replaced repeated code in pngpread.c with PNG_PUSH_SAVE_BUFFER_IF_FULL. - Added "chunk iTXt enables TEXT" and "chunk zTXt enables TEXT" - to pnglibconf.dfa. - Removed "option READ_COMPRESSED_TEXT enables READ_TEXT" from pnglibconf.dfa, - to make it possible to configure a libpng that supports iCCP but not TEXT. - -Version 1.6.14beta07 [October 7, 2014] - Removed "option WRITE_COMPRESSED_TEXT enables WRITE_TEXT" from pnglibconf.dfa - Only mark text chunks as written after successfully writing them. - -Version 1.6.14rc01 [October 15, 2014] - Fixed some typos in comments. - -Version 1.6.14rc02 [October 17, 2014] - Changed png_convert_to_rfc_1123() to png_convert_to_rfc_1123_buffer() - in the manual, to reflect the change made in libpng-1.6.0. - Updated README file to explain that direct access to the png_struct - and info_struct members has not been permitted since libpng-1.5.0. - -Version 1.6.14 [October 23, 2014] - No changes. - -Version 1.6.15beta01 [October 29, 2014] - Changed "if (!x)" to "if (x == 0)" and "if (x)" to "if (x != 0)" - Simplified png_free_data(). - Added missing "ptr = NULL" after some instances of png_free(). - -Version 1.6.15beta02 [November 1, 2014] - Changed remaining "if (!x)" to "if (x == 0)" and "if (x)" to "if (x != 0)" - -Version 1.6.15beta03 [November 3, 2014] - Added PNG_USE_ARM_NEON configuration flag (Marcin Juszkiewicz). - -Version 1.6.15beta04 [November 4, 2014] - Removed new PNG_USE_ARM_NEON configuration flag and made a one-line - revision to configure.ac to support ARM on aarch64 instead (John Bowler). - -Version 1.6.15beta05 [November 5, 2014] - Use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING in - example.c, pngtest.c, and applications in the contrib directory. - Fixed an out-of-range read in png_user_version_check() (Bug report from - Qixue Xiao, CVE-2015-8540). - Simplified and future-proofed png_user_version_check(). - Fixed GCC unsigned int->float warnings. Various versions of GCC - seem to generate warnings when an unsigned value is implicitly - converted to double. This is probably a GCC bug but this change - avoids the issue by explicitly converting to (int) where safe. - Free all allocated memory in pngimage. The file buffer cache was left - allocated at the end of the program, harmless but it causes memory - leak reports from clang. - Fixed array size calculations to avoid warnings. At various points - in the code the number of elements in an array is calculated using - sizeof. This generates a compile time constant of type (size_t) which - is then typically assigned to an (unsigned int) or (int). Some versions - of GCC on 64-bit systems warn about the apparent narrowing, even though - the same compiler does apparently generate the correct, in-range, - numeric constant. This adds appropriate, safe, casts to make the - warnings go away. - -Version 1.6.15beta06 [November 6, 2014] - Reverted use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING - in the manual, example.c, pngtest.c, and applications in the contrib - directory. It was incorrect advice. - -Version 1.6.15beta07 [November 7, 2014] - Removed #ifdef PNG_16BIT_SUPPORTED/#endif around png_product2(); it is - needed by png_reciprocal2(). - Added #ifdef PNG_16BIT_SUPPORTED/#endif around png_log16bit() and - png_do_swap(). - Changed all "#endif /* PNG_FEATURE_SUPPORTED */" to "#endif /* FEATURE */" - -Version 1.6.15beta08 [November 8, 2014] - More housecleaning in *.h - -Version 1.6.15rc01 [November 13, 2014] - -Version 1.6.15rc02 [November 14, 2014] - The macros passed in the command line to Borland make were ignored if - similarly-named macros were already defined in makefiles. This behavior - is different from POSIX make and other make programs. Surround the - macro definitions with ifndef guards (Cosmin). - -Version 1.6.15rc03 [November 16, 2014] - Added "-D_CRT_SECURE_NO_WARNINGS" to CFLAGS in scripts/makefile.vcwin32. - Removed the obsolete $ARCH variable from scripts/makefile.darwin. - -Version 1.6.15 [November 20, 2014] - No changes. - -Version 1.6.16beta01 [December 14, 2014] - Added ".align 2" to arm/filter_neon.S to support old GAS assemblers that - don't do alignment correctly. - Revised Makefile.am and scripts/symbols.dfn to work with MinGW/MSYS - (Bob Friesenhahn). - -Version 1.6.16beta02 [December 15, 2014] - Revised Makefile.am and scripts/*.dfn again to work with MinGW/MSYS; - renamed scripts/*.dfn to scripts/*.c (John Bowler). - -Version 1.6.16beta03 [December 21, 2014] - Quiet a "comparison always true" warning in pngstest.c (John Bowler). - -Version 1.6.16rc01 [December 21, 2014] - Restored a test on width that was removed from png.c at libpng-1.6.9 - (Bug report by Alex Eubanks, CVE-2015-0973). - -Version 1.6.16rc02 [December 21, 2014] - Undid the update to pngrutil.c in 1.6.16rc01. - -Version 1.6.16rc03 [December 21, 2014] - Fixed an overflow in png_combine_row() with very wide interlaced images - (Bug report and fix by John Bowler, CVE-2014-9495). - -Version 1.6.16 [December 22, 2014] - No changes. - -Version 1.6.17beta01 [January 29, 2015] - Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h - Corrected the width limit calculation in png_check_IHDR(). - Removed user limits from pngfix. Also pass NULL pointers to - png_read_row to skip the unnecessary row de-interlace stuff. - Added testing of png_set_packing() to pngvalid.c - Regenerated configure scripts in the *.tar distributions with libtool-2.4.4 - Implement previously untested cases of libpng transforms in pngvalid.c - Fixed byte order in png_do_read_filler() with 16-bit input. Previously - the high and low bytes of the filler, from png_set_filler() or from - png_set_add_alpha(), were read in the wrong order. - Made the check for out-of-range values in png_set_tRNS() detect - values that are exactly 2^bit_depth, and work on 16-bit platforms. - Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47. - Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and - pngset.c to avoid warnings about dead code. - Added "& 0xff" to many instances of expressions that are typecast - to (png_byte), to avoid Coverity warnings. - -Version 1.6.17beta02 [February 7, 2015] - Work around one more Coverity-scan dead-code warning. - Do not build png_product2() when it is unused. - -Version 1.6.17beta03 [February 17, 2015] - Display user limits in the output from pngtest. - Eliminated the PNG_SAFE_LIMITS macro and restored the 1-million-column - and 1-million-row default limits in pnglibconf.dfa, that can be reset - by the user at build time or run time. This provides a more robust - defense against DOS and as-yet undiscovered overflows. - -Version 1.6.17beta04 [February 21, 2015] - Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default. - Allow user to call png_get_IHDR() with NULL arguments (Reuben Hawkins). - Rebuilt configure scripts with automake-1.15 and libtool-2.4.6 - -Version 1.6.17beta05 [February 25, 2015] - Restored compiling of png_reciprocal2 with PNG_NO_16BIT. - -Version 1.6.17beta06 [February 27, 2015] - Moved png_set_filter() prototype into a PNG_WRITE_SUPPORTED block - of png.h. - Avoid runtime checks when converting integer to png_byte with - Visual Studio (Sergey Kosarevsky) - -Version 1.6.17rc01 [March 4, 2015] - No changes. - -Version 1.6.17rc02 [March 9, 2015] - Removed some comments that the configure script did not handle - properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt. - Free the unknown_chunks structure even when it contains no data. - -Version 1.6.17rc03 [March 12, 2015] - Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF - for consistency, and remove some useless tests (Alexey Petruchik). - -Version 1.6.17rc04 [March 16, 2015] - Remove pnglibconf.h, pnglibconf.c, and pnglibconf.out instead of - pnglibconf.* in "make clean" (Cosmin). - Fix bug in calculation of maxbits, in png_write_sBIT, introduced - in libpng-1.6.17beta01 (John Bowler). - -Version 1.6.17rc05 [March 21, 2015] - Define PNG_FILTER_* and PNG_FILTER_VALUE_* in png.h even when WRITE - is not supported (John Bowler). This fixes an error introduced in - libpng-1.6.17beta06. - Reverted "& 0xff" additions of version 1.6.17beta01. Libpng passes - the Coverity scan without them. - -Version 1.6.17rc06 [March 23, 2015] - Remove pnglibconf.dfn and pnglibconf.pre with "make clean". - Reformatted some "&0xff" instances to "& 0xff". - Fixed simplified 8-bit-linear to sRGB alpha. The calculated alpha - value was wrong. It's not clear if this affected the final stored - value; in the obvious code path the upper and lower 8-bits of the - alpha value were identical and the alpha was truncated to 8-bits - rather than dividing by 257 (John Bowler). - -Version 1.6.17 [March 26, 2015] - No changes. - -Version 1.6.18beta01 [April 1, 2015] - Removed PNG_SET_CHUNK_[CACHE|MALLOC]_LIMIT_SUPPORTED macros. They - have been combined with PNG_SET_USER_LIMITS_SUPPORTED (resolves - bug report by Andrew Church). - Fixed rgb_to_gray checks and added tRNS checks to pngvalid.c. This - fixes some arithmetic errors that caused some tests to fail on - some 32-bit platforms (Bug reports by Peter Breitenlohner [i686] - and Petr Gajdos [i586]). - -Version 1.6.18beta02 [April 26, 2015] - Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler - (Bug report by Viktor Szakats). - -Version 1.6.18beta03 [May 6, 2015] - Replaced "unexpected" with an integer (0xabadca11) in pngset.c - where a long was expected, to avoid a compiler warning when PNG_DEBUG > 1. - Added contrib/examples/simpleover.c, to demonstrate how to handle - alpha compositing of multiple images, using the "simplified API" - and an example PNG generation tool, contrib/examples/genpng.c - (John Bowler). - -Version 1.6.18beta04 [May 20, 2015] - PNG_RELEASE_BUILD replaces tests where the code depended on the build base - type and can be defined on the command line, allowing testing in beta - builds (John Bowler). - Avoid Coverity issue 80858 (REVERSE NULL) in pngtest.c PNG_DEBUG builds. - Avoid a harmless potential integer overflow in png_XYZ_from_xy() (Bug - report from Christopher Ferris). - -Version 1.6.18beta05 [May 31, 2015] - Backport filter selection code from libpng-1.7.0beta51, to combine - sub_row, up_row, avg_row, and paeth_row into try_row and tst_row. - Changed png_voidcast(), etc., to voidcast(), etc., in contrib/tools/pngfix.c - to avoid confusion with the libpng private macros. - Fixed old cut&paste bug in the weighted filter selection code in - pngwutil.c, introduced in libpng-0.95, March 1997. - -Version 1.6.18beta06 [June 1, 2015] - Removed WRITE_WEIGHTED_FILTERED code, to save a few kbytes of the - compiled library size. It never worked properly and as far as we can - tell, no one uses it. The png_set_filter_heuristics() and - png_set_filter_heuristics_fixed() APIs are retained but deprecated - and do nothing. - -Version 1.6.18beta07 [June 6, 2015] - Removed non-working progressive reader 'skip' function. This - function has apparently never been used. It was implemented - to support back-door modification of png_struct in libpng-1.4.x - but (because it does nothing and cannot do anything) was apparently - never tested (John Bowler). - Fixed cexcept.h in which GCC 5 now reports that one of the auto - variables in the Try macro needs to be volatile to prevent value - being lost over the setjmp (John Bowler). - Fixed NO_WRITE_FILTER and -Wconversion build breaks (John Bowler). - Fix g++ build breaks (John Bowler). - Quieted some Coverity issues in pngfix.c, png-fix-itxt.c, pngvalid.c, - pngstest.c, and pngimage.c. Most seem harmless, but png-fix-itxt - would only work with iTXt chunks with length 255 or less. - Added #ifdef's to contrib/examples programs so people don't try - to compile them without the minimum required support enabled - (suggested by Flavio Medeiros). - -Version 1.6.18beta08 [June 30, 2015] - Eliminated the final two Coverity defects (insecure temporary file - handling in contrib/libtests/pngstest.c; possible overflow of - unsigned char in contrib/tools/png-fix-itxt.c). To use the "secure" - file handling, define PNG_USE_MKSTEMP, otherwise "tmpfile()" will - be used. - Removed some unused WEIGHTED_FILTER macros from png.h and pngstruct.h - -Version 1.6.18beta09 [July 5, 2015] - Removed some useless typecasts from contrib/tools/png-fix-itxt.c - Fixed a new signed-unsigned comparison in pngrtran.c (Max Stepin). - Replaced arbitrary use of 'extern' with #define PNG_LINKAGE_*. To - preserve API compatibility, the new defines all default to "extern" - (requested by Jan Nijtmans). - -Version 1.6.18rc01 [July 9, 2015] - Belatedly added Mans Rullgard and James Yu to the list of Contributing - Authors. - -Version 1.6.18rc02 [July 12, 2015] - Restored unused FILTER_HEURISTIC macros removed at libpng-1.6.18beta08 - to png.h to avoid compatibility warnings. - -Version 1.6.18rc03 [July 15, 2015] - Minor changes to the man page - -Version 1.6.18 [July 23, 2015] - No changes. - -Version 1.6.19beta01 [July 30, 2015] - Updated obsolete information about the simplified API macros in the - manual pages (Bug report by Arc Riley). - Avoid potentially dereferencing NULL info_ptr in png_info_init_3(). - Rearranged png.h to put the major sections in the same order as - in libpng17. - Eliminated unused PNG_COST_SHIFT, PNG_WEIGHT_SHIFT, PNG_COST_FACTOR, and - PNG_WEIGHT_FACTOR macros. - Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler - (Bug report by Viktor Szakats). Several warnings remain and are - unavoidable, where we test for overflow. - Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c - Fixed uninitialized variable in contrib/gregbook/rpng2-x.c - -Version 1.6.19beta02 [August 19, 2015] - Moved config.h.in~ from the "libpng_autotools_files" list to the - "libpng_autotools_extra" list in autogen.sh because it was causing a - false positive for missing files (bug report by Robert C. Seacord). - Removed unreachable "break" statements in png.c, pngread.c, and pngrtran.c - to suppress clang warnings (Bug report by Viktor Szakats). - Fixed some bad links in the man page. - Changed "n bit" to "n-bit" in comments. - Added signed/unsigned 16-bit safety net. This removes the dubious - 0x8000 flag definitions on 16-bit systems. They aren't supported - yet the defs *probably* work, however it seems much safer to do this - and be advised if anyone, contrary to advice, is building libpng 1.6 - on a 16-bit system. It also adds back various switch default clauses - for GCC; GCC errors out if they are not present (with an appropriately - high level of warnings). - Safely convert num_bytes to a png_byte in png_set_sig_bytes() (Robert - Seacord). - Fixed the recently reported 1's complement security issue by replacing - the value that is illegal in the PNG spec, in both signed and unsigned - values, with 0. Illegal unsigned values (anything greater than or equal - to 0x80000000) can still pass through, but since these are not illegal - in ANSI-C (unlike 0x80000000 in the signed case) the checking that - occurs later can catch them (John Bowler). - -Version 1.6.19beta03 [September 26, 2015] - Fixed png_save_int_32 when int is not 2's complement (John Bowler). - Updated libpng16 with all the recent test changes from libpng17, - including changes to pngvalid.c to ensure that the original, - distributed, version of contrib/visupng/cexcept.h can be used - (John Bowler). - pngvalid contains the correction to the use of SAVE/STORE_ - UNKNOWN_CHUNKS; a bug revealed by changes in libpng 1.7. More - tests contain the --strict option to detect warnings and the - pngvalid-standard test has been corrected so that it does not - turn on progressive-read. There is a separate test which does - that. (John Bowler) - Also made some signed/unsigned fixes. - Make pngstest error limits version specific. Splitting the machine - generated error structs out to a file allows the values to be updated - without changing pngstest.c itself. Since libpng 1.6 and 1.7 have - slightly different error limits this simplifies maintenance. The - makepngs.sh script has also been updated to more accurately reflect - current problems in libpng 1.7 (John Bowler). - Incorporated new test PNG files into make check. tests/pngstest-* - are changed so that the new test files are divided into 8 groups by - gamma and alpha channel. These tests have considerably better code - and pixel-value coverage than contrib/pngsuite; however,coverage is - still incomplete (John Bowler). - Removed the '--strict' in 1.6 because of the double-gamma-correction - warning, updated pngstest-errors.h for the errors detected with the - new contrib/testspngs PNG test files (John Bowler). - -Version 1.6.19beta04 [October 15, 2015] - Worked around rgb-to-gray issues in libpng 1.6. The previous - attempts to ignore the errors in the code aren't quite enough to - deal with the 'channel selection' encoding added to libpng 1.7; abort. - pngvalid.c is changed to drop this encoding in prior versions. - Fixed 'pow' macros in pngvalid.c. It is legal for 'pow' to be a - macro, therefore the argument list cannot contain preprocessing - directives. Make sure pow is a function where this happens. This is - a minimal safe fix, the issue only arises in non-performance-critical - code (bug report by Curtis Leach, fix by John Bowler). - Added sPLT support to pngtest.c - -Version 1.6.19rc01 [October 23, 2015] - No changes. - -Version 1.6.19rc02 [October 31, 2015] - Prevent setting or writing over-length PLTE chunk (Cosmin Truta). - Silently truncate over-length PLTE chunk while reading. - Libpng incorrectly calculated the output rowbytes when the application - decreased either the number of channels or the bit depth (or both) in - a user transform. This was safe; libpng overallocated buffer space - (potentially by quite a lot; up to 4 times the amount required) but, - from 1.5.4 on, resulted in a png_error (John Bowler). - -Version 1.6.19rc03 [November 3, 2015] - Fixed some inconsequential cut-and-paste typos in png_set_cHRM_XYZ_fixed(). - Clarified COPYRIGHT information to state explicitly that versions - are derived from previous versions. - Removed much of the long list of previous versions from png.h and - libpng.3. - -Version 1.6.19rc04 [November 5, 2015] - Fixed new bug with CRC error after reading an over-length palette - (bug report by Cosmin Truta) (CVE-2015-8126). - -Version 1.6.19 [November 12, 2015] - Cleaned up coding style in png_handle_PLTE(). - -Version 1.6.20beta01 [November 20, 2015] - Avoid potential pointer overflow/underflow in png_handle_sPLT() and - png_handle_pCAL() (Bug report by John Regehr). - -Version 1.6.20beta02 [November 23, 2015] - Fixed incorrect implementation of png_set_PLTE() that uses png_ptr - not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126 - vulnerability. Fixes CVE-2015-8472. - -Version 1.6.20beta03 [November 24, 2015] - Backported tests from libpng-1.7.0beta69. - -Version 1.6.20rc01 [November 26, 2015] - Fixed an error in handling of bad zlib CMINFO field in pngfix, found by - American Fuzzy Lop, reported by Brian Carpenter. inflate() doesn't - immediately fault a bad CMINFO field; instead a 'too far back' error - happens later (at least some times). pngfix failed to limit CMINFO to - the allowed values but then assumed that window_bits was in range, - triggering an assert. The bug is mostly harmless; the PNG file cannot - be fixed. - -Version 1.6.20rc02 [November 29, 2015] - In libpng 1.6 zlib initialization was changed to use the window size - in the zlib stream, not a fixed value. This causes some invalid images, - where CINFO is too large, to display 'correctly' if the rest of the - data is valid. This provides a workaround for zlib versions where the - error arises (ones that support the API change to use the window size - in the stream). - -Version 1.6.20 [December 3, 2015] - No changes. - -Version 1.6.21beta01 [December 11, 2015] - Fixed syntax "$(command)" in tests/pngstest that some shells other than - bash could not parse (Bug report by Nelson Beebe). Use `command` instead. - -Version 1.6.21beta02 [December 14, 2015] - Moved png_check_keyword() from pngwutil.c to pngset.c - Removed LE/BE dependencies in pngvalid, to 'fix' the current problem - in the BigEndian tests by not testing it, making the BE code the same - as the LE version. - Fixes to pngvalid for various reduced build configurations (eliminate unused - statics) and a fix for the case in rgb_to_gray when the digitize option - reduces graylo to 0, producing a large error. - -Version 1.6.21beta03 [December 18, 2015] - Widened the 'limit' check on the internally calculated error limits in - the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error - checks) and changed the check to only operate in non-release builds - (base build type not RC or RELEASE.) - Fixed undefined behavior in pngvalid.c, undefined because - (png_byte) << shift is undefined if it changes the signed bit - (because png_byte is promoted to int). The libpng exported functions - png_get_uint_32 and png_get_uint_16 handle this. (Bug reported by - David Drysdale as a result of reports from UBSAN in clang 3.8). - This changes pngvalid to use BE random numbers; this used to produce - errors but these should not be fixed as a result of the previous changes. - -Version 1.6.21rc01 [January 4, 2016] - In projects/vstudio, combined readme.txt and WARNING into README.txt - -Version 1.6.21rc02 [January 7, 2016] - Relocated assert() in contrib/tools/pngfix.c, bug found by American - Fuzzy Lop, reported by Brian Carpenter. - Marked 'limit' UNUSED in transform_range_check(). This only affects - release builds. - -Version 1.6.21 [January 15, 2016] - Worked around a false-positive Coverity issue in pngvalid.c. - -Version 1.6.22beta01 [January 23, 2016] - Changed PNG_USE_MKSTEMP to __COVERITY__ to select alternate - "tmpfile()" implementation in contrib/libtests/pngstest.c - Fixed NO_STDIO build of pngunknown.c to skip calling png_init_io() - if there is no stdio.h support. - Added a png_image_write_to_memory() API and a number of assist macros - to allow an application that uses the simplified API write to bypass - stdio and write directly to memory. - Added some warnings (png.h) and some check code to detect *possible* - overflow in the ROW_STRIDE and simplified image SIZE macros. This - disallows image width/height/format that *might* overflow. This is - a quiet API change that limits in-memory image size (uncompressed) to - less than 4GByte and image row size (stride) to less than 2GByte. - Revised workaround for false-positive Coverity issue in pngvalid.c. - -Version 1.6.22beta02 [February 8, 2016] - Only use exit(77) in configure builds. - Corrected error in PNG_IMAGE_PNG_SIZE_MAX. This new macro underreported - the palette size because it failed to take into account that the memory - palette has to be expanded to full RGB when it is written to PNG. - Updated CMakeLists.txt, added supporting scripts/gen*.cmake.in - and test.cmake.in (Roger Leigh). - Relaxed limit checks on gamma values in pngrtran.c. As suggested in - the comments gamma values outside the range currently permitted - by png_set_alpha_mode are useful for HDR data encoding. These values - are already permitted by png_set_gamma so it is reasonable caution to - extend the png_set_alpha_mode range as HDR imaging systems are starting - to emerge. - -Version 1.6.22beta03 [March 9, 2016] - Added a common-law trademark notice and export control information - to the LICENSE file, png.h, and the man page. - Restored "& 0xff" in png_save_uint_16() and png_save_uint_32() that - were accidentally removed from libpng-1.6.17. - Changed PNG_INFO_cHNK and PNG_FREE_cHNK from 0xnnnn to 0xnnnnU in png.h - (Robert C. Seacord). - Removed dubious "#if INT_MAX" test from png.h that was added to - libpng-1.6.19beta02 (John Bowler). - Add ${INCLUDES} in scripts/genout.cmake.in (Bug report by Nixon Kwok). - Updated LICENSE to say files in the contrib directory are not - necessarily under the libpng license, and that some makefiles have - other copyright owners. - Added INTEL-SSE2 support (Mike Klein and Matt Sarett, Google, Inc.). - Made contrib/libtests/timepng more robust. The code no longer gives - up/fails on invalid PNG data, it just skips it (with error messages). - The code no longer fails on PNG files with data beyond IEND. Options - exist to use png_read_png (reading the whole image, not by row) and, in - that case, to apply any of the supported transforms. This makes for - more realistic testing; the decoded data actually gets used in a - meaningful fashion (John Bowler). - Fixed some misleading indentation (Krishnaraj Bhat). - -Version 1.6.22beta04 [April 5, 2016] - Force GCC compilation to C89 if needed (Dagobert Michelsen). - SSE filter speed improvements for bpp=3: - memcpy-free implementations of load3() / store3(). - call load3() only when needed at the end of a scanline. - -Version 1.6.22beta05 [April 27, 2016] - Added PNG_FAST_FILTERS macro (defined as - PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP). - Various fixes for contrib/libtests/timepng.c - Moved INTEL-SSE code from pngpriv.h into contrib/intel/intel_sse.patch. - Fixed typo (missing underscore) in #define PNG_READ_16_TO_8_SUPPORTED - (Bug report by Y.Ohashik). - -Version 1.6.22beta06 [May 5, 2016] - Rebased contrib/intel_sse.patch. - Quieted two Coverity issues in contrib/libtests/timepng.c. - Fixed issues with scripts/genout.cmake.in (David Capello, Nixon Kwok): - Added support to use multiple directories in ZLIBINCDIR variable, - Fixed CMAKE_C_FLAGS with multiple values when genout is compiled on MSVC, - Fixed pnglibconf.c compilation on OS X including the sysroot path. - -Version 1.6.22rc01 [May 14, 2016] - No changes. - -Version 1.6.22rc02 [May 16, 2016] - Removed contrib/timepng from default build; it does not build on platforms - that don't supply clock_gettime(). - -Version 1.6.22rc03 [May 17, 2016] - Restored contrib/timepng to default build but check for the presence - of clock_gettime() in configure.ac and Makefile.am. - -Version 1.6.22 [May 26, 2016] - No changes. - -Version 1.6.23beta01 [May 29, 2016] - Stop a potential memory leak in png_set_tRNS() (Bug report by Ted Ying). - Fixed the progressive reader to handle empty first IDAT chunk properly - (patch by Timothy Nikkel). This bug was introduced in libpng-1.6.0 and - only affected the libpng16 branch. - Added tests in pngvalid.c to check zero-length IDAT chunks in various - positions. Fixed the sequential reader to handle these more robustly - (John Bowler). - -Version 1.6.23rc01 [June 2, 2016] - Corrected progressive read input buffer in pngvalid.c. The previous version - the code invariably passed just one byte at a time to libpng. The intent - was to pass a random number of bytes in the range 0..511. - Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch. - Added missing ")" in pngerror.c (Matt Sarrett). - -Version 1.6.23rc02 [June 4, 2016] - Fixed undefined behavior in png_push_save_buffer(). Do not call - memcpy() with a null source, even if count is zero (Leon Scroggins III). - -Version 1.6.23 [June 9, 2016] - Fixed bad link to RFC2083 in png.5 (Nikola Forro). - -Version 1.6.24beta01 [June 11, 2016] - Avoid potential overflow of the PNG_IMAGE_SIZE macro. This macro - is not used within libpng, but is used in some of the examples. - -Version 1.6.24beta02 [June 23, 2016] - Correct filter heuristic overflow handling. This was broken when the - write filter code was moved out-of-line; if there is a single filter and - the heuristic sum overflows the calculation of the filtered line is not - completed. In versions prior to 1.6 the code was duplicated in-line - and the check not performed, so the filter operation completed; however, - in the multi-filter case where the sum is performed the 'none' filter would - be selected if all the sums overflowed, even if it wasn't in the filter - list. The fix to the first problem is simply to provide PNG_SIZE_MAX as - the current lmins sum value; this means the sum can never exceed it and - overflows silently. A reasonable compiler that does choose to inline - the code will simply eliminate the sum check. - The fix to the second problem is to use high precision arithmetic (this is - implemented in 1.7), however a simple safe fix here is to chose the lowest - numbered filter in the list from png_set_filter (this only works if the - first problem is also fixed) (John Bowler). - Use a more efficient absolute value calculation on SSE2 (Matthieu Darbois). - Fixed the case where PNG_IMAGE_BUFFER_SIZE can overflow in the application - as a result of the application using an increased 'row_stride'; previously - png_image_finish_read only checked for overflow on the base calculation of - components. (I.e. it checked for overflow of a 32-bit number on the total - number of pixel components in the output format, not the possibly padded row - length and not the number of bytes, which for linear formats is twice the - number of components.) - MSVC does not like '-(unsigned)', so replaced it with 0U-(unsigned) - MSVC does not like (uInt) = -(unsigned) (i.e. as an initializer), unless - the conversion is explicitly invoked by a cast. - Put the SKIP definition in the correct place. It needs to come after the - png.h include (see all the other .c files in contrib/libtests) because it - depends on PNG_LIBPNG_VER. - Removed the three compile warning options from the individual project - files into the zlib.props globals. It increases the warning level from 4 - to All and adds a list of the warnings that need to be turned off. This is - semi-documentary; the intent is to tell libpng users which warnings have - been examined and judged non-fixable at present. The warning about - structure padding is fixable, but it would be a signficant change (moving - structure members around). - -Version 1.6.24beta03 [July 4, 2016] - Optimized absolute value calculation in filter selection, similar to - code in the PAETH decoder in pngrutil.c. Build with PNG_USE_ABS to - use this. - Added pngcp to the build together with a pngcp.dfa configuration test. - Added high resolution timing to pngcp. - Added "Common linking failures" section to INSTALL. - Relocated misplaced #endif in png.c sRGB profile checking. - Fixed two Coverity issues in pngcp.c. - -Version 1.6.24beta04 [July 8, 2016] - Avoid filter-selection heuristic sum calculations in cases where only one - filter is a candidate for selection. This trades off code size (added - private png_setup_*_row_only() functions) for speed. - -Version 1.6.24beta05 [July 13, 2016] - Fixed some indentation to comply with our coding style. - Added contrib/tools/reindent. - -Version 1.6.24beta06 [July 18, 2016] - Fixed more indentation to comply with our coding style. - Eliminated unnecessary tests of boolean png_isaligned() vs 0. - -Version 1.6.24rc01 [July 25, 2016] - No changes. - -Version 1.6.24rc02 [August 1, 2016] - Conditionally compile SSE2 headers in contrib/intel/intel_sse.patch - Conditionally compile png_decompress_chunk(). - -Version 1.6.24rc03 [August 2, 2016] - Conditionally compile ARM_NEON headers in pngpriv.h - Updated contrib/intel/intel_sse.patch - -Version 1.6.24[August 4, 2016] - No changes. - -Version 1.6.25beta01 [August 12, 2016] - Reject oversized iCCP profile immediately. - Cleaned up PNG_DEBUG compile of pngtest.c. - Conditionally compile png_inflate(). - -Version 1.6.25beta02 [August 18, 2016] - Don't install pngcp; it conflicts with pngcp in the pngtools package. - Minor editing of INSTALL, (whitespace, added copyright line) - -Version 1.6.25rc01 [August 24, 2016] - No changes. - -Version 1.6.25rc02 [August 29, 2016] - Added MIPS support (Mandar Sahastrabuddhe ). - Only the UP filter is currently implemented. - -Version 1.6.25rc03 [August 29, 2016] - Rebased contrib/intel/intel_sse.patch after the MIPS implementation. - -Version 1.6.25rc04 [August 30, 2016] - Added MIPS support for SUB, AVG, and PAETH filters (Mandar Sahastrabuddhe). - -Version 1.6.25rc05 [August 30, 2016] - Rebased contrib/intel/intel_sse.patch after the MIPS implementation update.. - -Version 1.6.25 [September 1, 2016] - No changes. - -Version 1.6.26beta01 [September 26, 2016] - Fixed handling zero length IDAT in pngfix (bug report by Agostino Sarubbo, - bugfix by John Bowler). - Do not issue a png_error() on read in png_set_pCAL() because png_handle_pCAL - has allocated memory that libpng needs to free. - Conditionally compile png_set_benign_errors() in pngread.c and pngtest.c - Issue a png_benign_error instead of a png_error on ADLER32 mismatch - while decoding compressed data chunks. - Changed PNG_ZLIB_VERNUM to ZLIB_VERNUM in pngpriv.h, pngstruct.h, and - pngrutil.c. - If CRC handling of critical chunks has been set to PNG_CRC_QUIET_USE, - ignore the ADLER32 checksum in the IDAT chunk as well as the chunk CRCs. - Issue png_benign_error() on ADLER32 checksum mismatch instead of png_error(). - Add tests/badcrc.png and tests/badadler.png to tests/pngtest. - Merged pngtest.c with libpng-1.7.0beta84/pngtest.c - -Version 1.6.26beta02 [October 1, 2016] - Updated the documentation about CRC and ADLER32 handling. - Quieted 117 warnings from clang-3.8 in pngtrans.c, pngread.c, - pngwrite.c, pngunknown.c, and pngvalid.c. - Quieted 58 (out of 144) -Wconversion compiler warnings by changing - flag definitions in pngpriv.h from 0xnnnn to 0xnnnnU and trivial changes - in png.c, pngread.c, and pngwutil.c. - -Version 1.6.26beta03 [October 2, 2016] - Removed contrib/libtests/*.orig and *.rej that slipped into the tarballs. - Quieted the 86 remaining -Wconversion compiler warnings by - revising the png_isaligned() macro and trivial changes in png.c, - pngerror.c, pngget.c, pngmem.c, pngset.c, pngrtran.c, pngrutil.c, - pngwtran.c, pngwrite.c, and pngwutil.c. - -Version 1.6.26beta04 [October 3, 2016] - Quieted (bogus?) clang warnings about "absolute value has no effect" - when PNG_USE_ABS is defined. - Fixed offsets in contrib/intel/intel_sse.patch - -Version 1.6.26beta05 [October 6, 2016] - Changed integer constant 4294967294 to unsigned 4294967294U in pngconf.h - to avoid a signed/unsigned compare in the preprocessor. - -Version 1.6.26beta06 [October 7, 2016] - Use zlib-1.2.8.1 inflateValidate() instead of inflateReset2() to - optionally avoid ADLER32 evaluation. - -Version 1.6.26rc01 [October 12, 2016] - No changes. - -Version 1.6.26 [October 20, 2016] - Cosmetic change, "ptr != 0" to "ptr != NULL" in png.c and pngrutil.c - Despammed email addresses (replaced "@" with " at "). - -Version 1.6.27beta01 [November 2, 2016] - Restrict the new ADLER32-skipping to IDAT chunks. It broke iCCP chunk - handling: an erroneous iCCP chunk would throw a png_error and reject the - entire PNG image instead of rejecting just the iCCP chunk with a warning, - if built with zlib-1.2.8.1. - -Version 1.6.27rc01 [December 27, 2016] - Control ADLER32 checking with new PNG_IGNORE_ADLER32 option. Fixes - an endless loop when handling erroneous ADLER32 checksums; bug - introduced in libpng-1.6.26. - Removed the use of a macro containing the pre-processor 'defined' - operator. It is unclear whether this is valid; a macro that - "generates" 'defined' is not permitted, but the use of the word - "generates" within the C90 standard seems to imply more than simple - substitution of an expression itself containing a well-formed defined - operation. - Added ARM support to CMakeLists.txt (Andreas Franek). - -Version 1.6.27 [December 29, 2016] - Fixed a potential null pointer dereference in png_set_text_2() (bug report - and patch by Patrick Keshishian, CVE-2016-10087). - -Version 1.6.28rc01 [January 3, 2017] - Fixed arm/aarch64 detection in CMakeLists.txt (Gianfranco Costamagna). - Added option to Cmake build allowing a custom location of zlib to be - specified in a scenario where libpng is being built as a subproject - alongside zlib by another project (Sam Serrels). - Changed png_ptr->options from a png_byte to png_uint_32, to accomodate - up to 16 options. - -Version 1.6.28rc02 [January 4, 2017] - Added "include(GNUInstallDirs)" to CMakeLists.txt (Gianfranco Costamagna). - Moved SSE2 optimization code into the main libpng source directory. - Configure libpng with "configure --enable-intel-sse" or compile - libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it. - -Version 1.6.28rc03 [January 4, 2017] - Backed out the SSE optimization and last CMakeLists.txt to allow time for QA. - -Version 1.6.28 [January 5, 2017] - No changes. - -Version 1.6.29beta01 [January 12, 2017] - Readded "include(GNUInstallDirs)" to CMakeLists.txt (Gianfranco Costamagna). - Moved SSE2 optimization code into the main libpng source directory. - Configure libpng with "configure --enable-intel-sse" or compile - libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it. - Simplified conditional compilation in pngvalid.c, for AIX (Michael Felt). - -Version 1.6.29beta02 [February 22, 2017] - Avoid conditional directives that break statements in pngrutil.c (Romero - Malaquias) - The contrib/examples/pngtopng.c recovery code was in the wrong "if" - branches; the comments were correct. - Added code for PowerPC VSX optimisation (Vadim Barkov). - -Version 1.6.29beta03 [March 1, 2017] - Avoid potential overflow of shift operations in png_do_expand() (Aaron Boxer). - Change test ZLIB_VERNUM >= 0x1281 to ZLIB_VERNUM >= 0x1290 in pngrutil.c - because Solaris 11 distributes zlib-1.2.8.f that is older than 1.2.8.1, - as suggested in zlib FAQ, item 24. - Suppress clang warnings about implicit sign changes in png.c - -Version 1.6.29 [March 16, 2017] - No changes. - -Version 1.6.30beta01 [April 1, 2017] - Added missing "$(CPPFLAGS)" to the compile line for c.pic.o in - makefile.linux and makefile.solaris-x86 (Cosmin). - Revised documentation of png_get_error_ptr() in the libpng manual. - Silence clang -Wcomma and const drop warnings (Viktor Szakats). - Update Sourceforge URLs in documentation (https instead of http). - -Version 1.6.30beta02 [April 22, 2017] - Document need to check for integer overflow when allocating a pixel - buffer for multiple rows in contrib/gregbook, contrib/pngminus, - example.c, and in the manual (suggested by Jaeseung Choi). This - is similar to the bug reported against pngquant in CVE-2016-5735. - Removed reference to the obsolete PNG_SAFE_LIMITS macro in the documentation. - -Version 1.6.30beta03 [May 22, 2017] - Check for integer overflow in contrib/visupng and contrib/tools/genpng. - Do not double evaluate CMAKE_SYSTEM_PROCESSOR in CMakeLists.txt. - Test CMAKE_HOST_WIN32 instead of WIN32 in CMakeLists.txt. - Fix some URL in documentation. - -Version 1.6.30beta04 [June 7, 2017] - Avoid writing an empty IDAT when the last IDAT exactly fills the - compression buffer (bug report by Brian Baird). This bug was - introduced in libpng-1.6.0. - -Version 1.6.30rc01 [June 14, 2017] - No changes. - -Version 1.6.30rc02 [June 25, 2017] - Update copyright year in pnglibconf.h, make ltmain.sh executable. - Add a reference to the libpng.download site in README. - -Version 1.6.30 [June 28, 2017] - No changes. - -Version 1.6.31beta01 [July 5, 2017] - Guard the definition of _POSIX_SOURCE in pngpriv.h (AIX already defines it; - bug report by Michael Felt). - Revised pngpriv.h to work around failure to compile arm/filter_neon.S - ("typedef" directive is unrecognized by the assembler). The problem - was introduced in libpng-1.6.30beta01. - Added "Requires: zlib" to libpng.pc.in (Pieter Neerincx). - Added special case for FreeBSD in arm/filter_neon.S (Maya Rashish). - -Version 1.6.31beta02 [July 8, 2017] - Added instructions for disabling hardware optimizations in INSTALL. - Added "--enable-hardware-optimizations" configuration flag to enable - or disable all hardware optimizations with one flag. - -Version 1.6.31beta03 [July 9, 2017] - Updated CMakeLists.txt to add INTEL_SSE and MIPS_MSA platforms. - Changed "int" to "png_size_t" in intel/filter_sse2.c to prevent - possible integer overflow (Bug report by John Bowler). - Quieted "declaration after statement" warnings in intel/filter_sse2.c. - Added scripts/makefile-linux-opt, which has hardware optimizations enabled. - -Version 1.6.31beta04 [July 11, 2017] - Removed one of the GCC-7.1.0 'strict-overflow' warnings that result when - integers appear on both sides of a compare. Worked around the others by - forcing the strict-overflow setting in the relevant functions to a level - where they are not reported (John Bowler). - Changed "FALL THROUGH" comments to "FALLTHROUGH" because GCC doesn't like - the space. - Worked around some C-style casts from (void*) because g++ 5.4.0 objects - to them. - Increased the buffer size for 'sprint' to pass the gcc 7.1.0 'sprint - overflow' check that is on by default with -Wall -Wextra. - -Version 1.6.31beta05 [July 13, 2017] - Added eXIf chunk support. - -Version 1.6.31beta06 [July 17, 2017] - Added a minimal eXIf chunk (with Orientation and FocalLengthIn35mmFilm - tags) to pngtest.png. - -Version 1.6.31beta07 [July 18, 2017] - Revised the eXIf chunk in pngtest.png to fix "Bad IFD1 Directory" warning. - -Version 1.6.31rc01 [July 19, 2017] - No changes. - -Version 1.6.31rc02 [July 25, 2017] - Fixed typo in example.c (png_free_image should be png_image_free) (Bug - report by John Smith) - -Version 1.6.31 [July 27, 2017] - No changes. - -Version 1.6.32beta01 [July 31, 2017] - Avoid possible NULL dereference in png_handle_eXIf when benign_errors - are allowed. Avoid leaking the input buffer "eXIf_buf". - Eliminated png_ptr->num_exif member from pngstruct.h and added num_exif - to arguments for png_get_eXIf() and png_set_eXIf(). - Added calls to png_handle_eXIf(() in pngread.c and png_write_eXIf() in - pngwrite.c, and made various other fixes to png_write_eXIf(). - Changed name of png_get_eXIF and png_set_eXIf() to png_get_eXIf_1() and - png_set_eXIf_1(), respectively, to avoid breaking API compatibility - with libpng-1.6.31. - -Version 1.6.32beta02 [August 1, 2017] - Updated contrib/libtests/pngunknown.c with eXIf chunk. - -Version 1.6.32beta03 [August 2, 2017] - Initialized btoa[] in pngstest.c - Stop memory leak when returning from png_handle_eXIf() with an error - (Bug report from the OSS-fuzz project). - -Version 1.6.32beta04 [August 2, 2017] - Replaced local eXIf_buf with info_ptr-eXIf_buf in png_handle_eXIf(). - Update libpng.3 and libpng-manual.txt about eXIf functions. - -Version 1.6.32beta05 [August 2, 2017] - Restored png_get_eXIf() and png_set_eXIf() to maintain API compatability. - -Version 1.6.32beta06 [August 2, 2017] - Removed png_get_eXIf_1() and png_set_eXIf_1(). - -Version 1.6.32beta07 [August 3, 2017] - Check length of all chunks except IDAT against user limit to fix an - OSS-fuzz issue (Fixes CVE-2017-12652). - -Version 1.6.32beta08 [August 3, 2017] - Check length of IDAT against maximum possible IDAT size, accounting - for height, rowbytes, interlacing and zlib/deflate overhead. - Restored png_get_eXIf_1() and png_set_eXIf_1(), because strlen(eXIf_buf) - does not work (the eXIf chunk data can contain zeroes). - -Version 1.6.32beta09 [August 3, 2017] - Require cmake-2.8.8 in CMakeLists.txt. Revised symlink creation, - no longer using deprecated cmake LOCATION feature (Clifford Yapp). - Fixed five-byte error in the calculation of IDAT maximum possible size. - -Version 1.6.32beta10 [August 5, 2017] - Moved chunk-length check into a png_check_chunk_length() private - function (Suggested by Max Stepin). - Moved bad pngs from tests to contrib/libtests/crashers - Moved testing of bad pngs into a separate tests/pngtest-badpngs script - Added the --xfail (expected FAIL) option to pngtest.c. It writes XFAIL - in the output but PASS for the libpng test. - Require cmake-3.0.2 in CMakeLists.txt (Clifford Yapp). - Fix "const" declaration info_ptr argument to png_get_eXIf_1() and the - num_exif argument to png_get_eXIf_1() (Github Issue 171). - -Version 1.6.32beta11 [August 7, 2017] - Added "eXIf" to "chunks_to_ignore[]" in png_set_keep_unknown_chunks(). - Added huge_IDAT.png and empty_ancillary_chunks.png to testpngs/crashers. - Make pngtest --strict, --relax, --xfail options imply -m (multiple). - Removed unused chunk_name parameter from png_check_chunk_length(). - Relocated setting free_me for eXIf data, to stop an OSS-fuzz leak. - Initialize profile_header[] in png_handle_iCCP() to fix OSS-fuzz issue. - Initialize png_ptr->row_buf[0] to 255 in png_read_row() to fix OSS-fuzz UMR. - Attempt to fix a UMR in png_set_text_2() to fix OSS-fuzz issue. - Increase minimum zlib stream from 9 to 14 in png_handle_iCCP(), to account - for the minimum 'deflate' stream, and relocate the test to a point - after the keyword has been read. - Check that the eXIf chunk has at least 2 bytes and begins with "II" or "MM". - -Version 1.6.32rc01 [August 18, 2017] - Added a set of "huge_xxxx_chunk.png" files to contrib/testpngs/crashers, - one for each known chunk type, with length = 2GB-1. - Check for 0 return from png_get_rowbytes() and added some (size_t) typecasts - in contrib/pngminus/*.c to stop some Coverity issues (162705, 162706, - and 162707). - Renamed chunks in contrib/testpngs/crashers to avoid having files whose - names differ only in case; this causes problems with some platforms - (github issue #172). - -Version 1.6.32rc02 [August 22, 2017] - Added contrib/oss-fuzz directory which contains files used by the oss-fuzz - project (https://github.com/google/oss-fuzz/tree/master/projects/libpng). - -Version 1.6.32 [August 24, 2017] - No changes. - -Version 1.6.33beta01 [August 28, 2017] - Added PNGMINUS_UNUSED macro to contrib/pngminus/p*.c and added missing - parenthesis in contrib/pngminus/pnm2png.c (bug report by Christian Hesse). - Fixed off-by-one error in png_do_check_palette_indexes() (Bug report - by Mick P., Source Forge Issue #269). - -Version 1.6.33beta02 [September 3, 2017] - Initialize png_handler.row_ptr in contrib/oss-fuzz/libpng_read_fuzzer.cc - to fix shortlived oss-fuzz issue 3234. - Compute a larger limit on IDAT because some applications write a deflate - buffer for each row (Bug report by Andrew Church). - Use current date (DATE) instead of release-date (RDATE) in last - changed date of contrib/oss-fuzz files. - Enabled ARM support in CMakeLists.txt (Bernd Kuhls). - -Version 1.6.33beta03 [September 14, 2017] - Fixed incorrect typecast of some arguments to png_malloc() and - png_calloc() that were png_uint_32 instead of png_alloc_size_t - (Bug report by "irwir" in Github libpng issue #175). - Use pnglibconf.h.prebuilt when building for ANDROID with cmake (Github - issue 162, by rcdailey). - -Version 1.6.33rc01 [September 20, 2017] - Initialize memory allocated by png_inflate to zero, using memset, to - stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2() - due to truncated iTXt or zTXt chunk. - Initialize memory allocated by png_read_buffer to zero, using memset, to - stop an oss-fuzz "use of uninitialized value" detection in - png_icc_check_tag_table() due to truncated iCCP chunk. - Removed a redundant test (suggested by "irwir" in Github issue #180). - -Version 1.6.33rc02 [September 23, 2017] - Added an interlaced version of each file in contrib/pngsuite. - Relocate new memset() call in pngrutil.c. - Removed more redundant tests (suggested by "irwir" in Github issue #180). - Add support for loading images with associated alpha in the Simplified - API (Samuel Williams). - -Version 1.6.33 [September 28, 2017] - Revert contrib/oss-fuzz/libpng_read_fuzzer.cc to libpng-1.6.32 state. - Initialize png_handler.row_ptr in contrib/oss-fuzz/libpng_read_fuzzer.cc - Add end_info structure and png_read_end() to the libpng fuzzer. - -Version 1.6.34 [September 29, 2017] - Removed contrib/pngsuite/i*.png; some of these were incorrect and caused - test failures. - -Send comments/corrections/commendations to png-mng-implement at lists.sf.net -(subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe) -or to glennrp at users.sourceforge.net - -Glenn R-P -#endif diff --git a/project/jni/png/INSTALL b/project/jni/png/INSTALL deleted file mode 100644 index e8edb7240..000000000 --- a/project/jni/png/INSTALL +++ /dev/null @@ -1,465 +0,0 @@ - - Installing libpng - -Contents - - I. Simple installation - II. Rebuilding the configure scripts - III. Using scripts/makefile* - IV. Using cmake - V. Directory structure - VI. Building with project files - VII. Building with makefiles - VIII. Configuring libpng for 16-bit platforms - IX. Configuring for DOS - X. Configuring for Medium Model - XI. Prepending a prefix to exported symbols - XII. Configuring for compiler xxx: - XIII. Removing unwanted object code - XIV. Enabling or disabling hardware optimizations - XV. Changes to the build and configuration of libpng in libpng-1.5.x - XVI. Setjmp/longjmp issues - XVII. Common linking failures - XVIII. Other sources of information about libpng - -I. Simple installation - -On Unix/Linux and similar systems, you can simply type - - ./configure [--prefix=/path] - make check - make install - -and ignore the rest of this document. "/path" is the path to the directory -where you want to install the libpng "lib", "include", and "bin" -subdirectories. - -If you downloaded a GIT clone, you will need to run ./autogen.sh before -running ./configure, to create "configure" and "Makefile.in" which are -not included in the GIT repository. - -Note that "configure" is only included in the "*.tar" distributions and not -in the "*.zip" or "*.7z" distributions. If you downloaded one of those -distributions, see "Building with project files" or "Building with makefiles", -below. - -II. Rebuilding the configure scripts - -If configure does not work on your system, or if you have a need to -change configure.ac or Makefile.am, and you have a reasonably -up-to-date set of tools, running ./autogen.sh in a git clone before -running ./configure may fix the problem. To be really sure that you -aren't using any of the included pre-built scripts, especially if you -are building from a tar distribution instead of a git distribution, -do this: - - ./configure --enable-maintainer-mode - make maintainer-clean - ./autogen.sh --maintainer --clean - ./autogen.sh --maintainer - ./configure [--prefix=/path] [other options] - make - make install - make check - -III. Using scripts/makefile* - -Instead, you can use one of the custom-built makefiles in the -"scripts" directory - - cp scripts/pnglibconf.h.prebuilt pnglibconf.h - cp scripts/makefile.system makefile - make test - make install - -The files that are presently available in the scripts directory -are listed and described in scripts/README.txt. - -Or you can use one of the "projects" in the "projects" directory. - -Before installing libpng, you must first install zlib, if it -is not already on your system. zlib can usually be found -wherever you got libpng; otherwise go to https://zlib.net/. You can -place zlib in the same directory as libpng or in another directory. - -If your system already has a preinstalled zlib you will still need -to have access to the zlib.h and zconf.h include files that -correspond to the version of zlib that's installed. - -If you wish to test with a particular zlib that is not first in the -standard library search path, put ZLIBLIB, ZLIBINC, CPPFLAGS, LDFLAGS, -and LD_LIBRARY_PATH in your environment before running "make test" -or "make distcheck": - - ZLIBLIB=/path/to/lib export ZLIBLIB - ZLIBINC=/path/to/include export ZLIBINC - CPPFLAGS="-I$ZLIBINC" export CPPFLAGS - LDFLAGS="-L$ZLIBLIB" export LDFLAGS - LD_LIBRARY_PATH="$ZLIBLIB:$LD_LIBRARY_PATH" export LD_LIBRARY_PATH - -If you are using one of the makefile scripts, put ZLIBLIB and ZLIBINC -in your environment and type - - make ZLIBLIB=$ZLIBLIB ZLIBINC=$ZLIBINC test - -IV. Using cmake - -If you want to use "cmake" (see www.cmake.org), type - - cmake . -DCMAKE_INSTALL_PREFIX=/path - make - make install - -As when using the simple configure method described above, "/path" points to -the installation directory where you want to put the libpng "lib", "include", -and "bin" subdirectories. - -V. Directory structure - -You can rename the directories that you downloaded (they -might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.8" -or "zlib128") so that you have directories called "zlib" and "libpng". - -Your directory structure should look like this: - - .. (the parent directory) - libpng (this directory) - INSTALL (this file) - README - *.h, *.c => libpng source files - CMakeLists.txt => "cmake" script - configuration files: - configure.ac, configure, Makefile.am, Makefile.in, - autogen.sh, config.guess, ltmain.sh, missing, libpng.pc.in, - libpng-config.in, aclocal.m4, config.h.in, config.sub, - depcomp, install-sh, mkinstalldirs, test-pngtest.sh - contrib - arm-neon, conftest, examples, gregbook, libtests, pngminim, - pngminus, pngsuite, tools, visupng - projects - cbuilder5, owatcom, visualc71, vstudio, xcode - scripts - makefile.* - *.def (module definition files) - etc. - pngtest.png - etc. - zlib - README, *.h, *.c contrib, etc. - -If the line endings in the files look funny, you may wish to get the other -distribution of libpng. It is available in both tar.gz (UNIX style line -endings) and zip (DOS style line endings) formats. - -VI. Building with project files - -If you are building libpng with MSVC, you can enter the -libpng projects\visualc71 or vstudio directory and follow the instructions -in README.txt. - -Otherwise enter the zlib directory and follow the instructions in zlib/README, -then come back here and run "configure" or choose the appropriate -makefile.sys in the scripts directory. - -VII. Building with makefiles - -Copy the file (or files) that you need from the -scripts directory into this directory, for example - -MSDOS example: - - copy scripts\makefile.msc makefile - copy scripts\pnglibconf.h.prebuilt pnglibconf.h - -UNIX example: - - cp scripts/makefile.std makefile - cp scripts/pnglibconf.h.prebuilt pnglibconf.h - -Read the makefile to see if you need to change any source or -target directories to match your preferences. - -Then read pnglibconf.dfa to see if you want to make any configuration -changes. - -Then just run "make" which will create the libpng library in -this directory and "make test" which will run a quick test that reads -the "pngtest.png" file and writes a "pngout.png" file that should be -identical to it. Look for "9782 zero samples" in the output of the -test. For more confidence, you can run another test by typing -"pngtest pngnow.png" and looking for "289 zero samples" in the output. -Also, you can run "pngtest -m contrib/pngsuite/*.png" and compare -your output with the result shown in contrib/pngsuite/README. - -Most of the makefiles will allow you to run "make install" to -put the library in its final resting place (if you want to -do that, run "make install" in the zlib directory first if necessary). -Some also allow you to run "make test-installed" after you have -run "make install". - -VIII. Configuring libpng for 16-bit platforms - -You will want to look into zconf.h to tell zlib (and thus libpng) that -it cannot allocate more than 64K at a time. Even if you can, the memory -won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K. - -IX. Configuring for DOS - -For DOS users who only have access to the lower 640K, you will -have to limit zlib's memory usage via a png_set_compression_mem_level() -call. See zlib.h or zconf.h in the zlib library for more information. - -X. Configuring for Medium Model - -Libpng's support for medium model has been tested on most of the popular -compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets -defined, and FAR gets defined to far in pngconf.h, and you should be -all set. Everything in the library (except for zlib's structure) is -expecting far data. You must use the typedefs with the p or pp on -the end for pointers (or at least look at them and be careful). Make -note that the rows of data are defined as png_bytepp, which is -an "unsigned char far * far *". - -XI. Prepending a prefix to exported symbols - -Starting with libpng-1.6.0, you can configure libpng (when using the -"configure" script) to prefix all exported symbols by means of the -configuration option "--with-libpng-prefix=FOO_", where FOO_ can be any -string beginning with a letter and containing only uppercase -and lowercase letters, digits, and the underscore (i.e., a C language -identifier). This creates a set of macros in pnglibconf.h, so this is -transparent to applications; their function calls get transformed by -the macros to use the modified names. - -XII. Configuring for compiler xxx: - -All includes for libpng are in pngconf.h. If you need to add, change -or delete an include, this is the place to do it. -The includes that are not needed outside libpng are placed in pngpriv.h, -which is only used by the routines inside libpng itself. -The files in libpng proper only include pngpriv.h and png.h, which -in turn includes pngconf.h and, as of libpng-1.5.0, pnglibconf.h. -As of libpng-1.5.0, pngpriv.h also includes three other private header -files, pngstruct.h, pnginfo.h, and pngdebug.h, which contain material -that previously appeared in the public headers. - -XIII. Removing unwanted object code - -There are a bunch of #define's in pngconf.h that control what parts of -libpng are compiled. All the defines end in _SUPPORTED. If you are -never going to use a capability, you can change the #define to #undef -before recompiling libpng and save yourself code and data space, or -you can turn off individual capabilities with defines that begin with -"PNG_NO_". - -In libpng-1.5.0 and later, the #define's are in pnglibconf.h instead. - -You can also turn all of the transforms and ancillary chunk capabilities -off en masse with compiler directives that define -PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS, -or all four, along with directives to turn on any of the capabilities that -you do want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the -extra transformations but still leave the library fully capable of reading -and writing PNG files with all known public chunks. Use of the -PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library -that is incapable of reading or writing ancillary chunks. If you are -not using the progressive reading capability, you can turn that off -with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING -capability, which you'll still have). - -All the reading and writing specific code are in separate files, so the -linker should only grab the files it needs. However, if you want to -make sure, or if you are building a stand alone library, all the -reading files start with "pngr" and all the writing files start with "pngw". -The files that don't match either (like png.c, pngtrans.c, etc.) -are used for both reading and writing, and always need to be included. -The progressive reader is in pngpread.c - -If you are creating or distributing a dynamically linked library (a .so -or DLL file), you should not remove or disable any parts of the library, -as this will cause applications linked with different versions of the -library to fail if they call functions not available in your library. -The size of the library itself should not be an issue, because only -those sections that are actually used will be loaded into memory. - -XIV. Enabling or disabling hardware optimizations - -Certain hardware capabilites, such as the Intel SSE instructions, -are normally detected at run time. Enable them with configure options -such as one of - - --enable-arm-neon=yes - --enable-mips-msa=yes - --enable-intel-sse=yes - --enable-powerpc-vsx=yes - -or enable them all at once with - - --enable-hardware-optimizations=yes - -or, if you are not using "configure", you can use one -or more of - - CPPFLAGS += "-DPNG_ARM_NEON" - CPPFLAGS += "-DPNG_MIPS_MSA" - CPPFLAGS += "-DPNG_INTEL_SSE" - CPPFLAGS += "-DPNG_POWERPC_VSX" - -See for example scripts/makefile.linux-opt - -If you wish to avoid using them, -you can disable them via the configure option - - --disable-hardware-optimizations - -to disable them all, or - - --enable-intel-sse=no - -to disable a particular one, -or via compiler-command options such as - - CPPFLAGS += "-DPNG_ARM_NEON_OPT=0, -DPNG_MIPS_MSA_OPT=0, - -DPNG_INTEL_SSE_OPT=0, -DPNG_POWERPC_VSX_OPT=0" - -If you are using cmake, hardware optimizations are "on" -by default. To disable them, use - - cmake . -DPNG_ARM_NEON=no -DPNG_INTEL_SSE=no \ - -DPNG_MIPS_MSA=no -DPNG_POWERPC_VSX=no - -or disable them all at once with - - cmake . -DPNG_HARDWARE_OPTIMIZATIONS=no - -XV. Changes to the build and configuration of libpng in libpng-1.5.x - -Details of internal changes to the library code can be found in the CHANGES -file and in the GIT repository logs. These will be of no concern to the vast -majority of library users or builders; however, the few who configure libpng -to a non-default feature set may need to change how this is done. - -There should be no need for library builders to alter build scripts if -these use the distributed build support - configure or the makefiles - -however, users of the makefiles may care to update their build scripts -to build pnglibconf.h where the corresponding makefile does not do so. - -Building libpng with a non-default configuration has changed completely. -The old method using pngusr.h should still work correctly even though the -way pngusr.h is used in the build has been changed; however, library -builders will probably want to examine the changes to take advantage of -new capabilities and to simplify their build system. - -A. Specific changes to library configuration capabilities - -The exact mechanism used to control attributes of API functions has -changed. A single set of operating system independent macro definitions -is used and operating system specific directives are defined in -pnglibconf.h - -As part of this the mechanism used to choose procedure call standards on -those systems that allow a choice has been changed. At present this only -affects certain Microsoft (DOS, Windows) and IBM (OS/2) operating systems -running on Intel processors. As before, PNGAPI is defined where required -to control the exported API functions; however, two new macros, PNGCBAPI -and PNGCAPI, are used instead for callback functions (PNGCBAPI) and -(PNGCAPI) for functions that must match a C library prototype (currently -only png_longjmp_ptr, which must match the C longjmp function.) The new -approach is documented in pngconf.h - -Despite these changes, libpng 1.5.0 only supports the native C function -calling standard on those platforms tested so far ("__cdecl" on Microsoft -Windows). This is because the support requirements for alternative -calling conventions seem to no longer exist. Developers who find it -necessary to set PNG_API_RULE to 1 should advise the mailing list -(png-mng-implement) of this and library builders who use Openwatcom and -therefore set PNG_API_RULE to 2 should also contact the mailing list. - -B. Changes to the configuration mechanism - -Prior to libpng-1.5.0 library builders who needed to configure libpng -had either to modify the exported pngconf.h header file to add system -specific configuration or had to write feature selection macros into -pngusr.h and cause this to be included into pngconf.h by defining -PNG_USER_CONFIG. The latter mechanism had the disadvantage that an -application built without PNG_USER_CONFIG defined would see the -unmodified, default, libpng API and thus would probably fail to link. - -These mechanisms still work in the configure build and in any makefile -build that builds pnglibconf.h, although the feature selection macros -have changed somewhat as described above. In 1.5.0, however, pngusr.h is -processed only once, at the time the exported header file pnglibconf.h is -built. pngconf.h no longer includes pngusr.h; therefore, pngusr.h is ignored -after the build of pnglibconf.h and it is never included in an application -build. - -The formerly used alternative of adding a list of feature macros to the -CPPFLAGS setting in the build also still works; however, the macros will be -copied to pnglibconf.h and this may produce macro redefinition warnings -when the individual C files are compiled. - -All configuration now only works if pnglibconf.h is built from -scripts/pnglibconf.dfa. This requires the program awk. Brian Kernighan -(the original author of awk) maintains C source code of that awk and this -and all known later implementations (often called by subtly different -names - nawk and gawk for example) are adequate to build pnglibconf.h. -The Sun Microsystems (now Oracle) program 'awk' is an earlier version -and does not work; this may also apply to other systems that have a -functioning awk called 'nawk'. - -Configuration options are now documented in scripts/pnglibconf.dfa. This -file also includes dependency information that ensures a configuration is -consistent; that is, if a feature is switched off, dependent features are -also switched off. As a recommended alternative to using feature macros in -pngusr.h a system builder may also define equivalent options in pngusr.dfa -(or, indeed, any file) and add that to the configuration by setting -DFA_XTRA to the file name. The makefiles in contrib/pngminim illustrate -how to do this, and also illustrate a case where pngusr.h is still required. - -After you have built libpng, the definitions that were recorded in -pnglibconf.h are available to your application (pnglibconf.h is included -in png.h and gets installed alongside png.h and pngconf.h in your -$PREFIX/include directory). Do not edit pnglibconf.h after you have built -libpng, because than the settings would not accurately reflect the settings -that were used to build libpng. - -XVI. Setjmp/longjmp issues - -Libpng uses setjmp()/longjmp() for error handling. Unfortunately setjmp() -is known to be not thread-safe on some platforms and we don't know of -any platform where it is guaranteed to be thread-safe. Therefore, if -your application is going to be using multiple threads, you should -configure libpng with PNG_NO_SETJMP in your pngusr.dfa file, with --DPNG_NO_SETJMP on your compile line, or with - - #undef PNG_SETJMP_SUPPORTED - -in your pnglibconf.h or pngusr.h. - -Starting with libpng-1.6.0, the library included a "simplified API". -This requires setjmp/longjmp, so you must either build the library -with PNG_SETJMP_SUPPORTED defined, or with PNG_SIMPLIFIED_READ_SUPPORTED -and PNG_SIMPLIFIED_WRITE_SUPPORTED undefined. - -XVII. Common linking failures - -If your application fails to find libpng or zlib entries while linking: - - Be sure "-lz" appears after "-lpng" on your linking command. - - Be sure you have built libpng, zlib, and your application for the - same platform (e.g., 32-bit or 64-bit). - - If you are using the vstudio project, observe the WARNING in - project/vstudio/README.txt. - -XVIII. Other sources of information about libpng: - -Further information can be found in the README and libpng-manual.txt -files, in the individual makefiles, in png.h, and the manual pages -libpng.3 and png.5. - -Copyright (c) 1998-2002,2006-2016 Glenn Randers-Pehrson -This document is released under the libpng license. -For conditions of distribution and use, see the disclaimer -and license in png.h. diff --git a/project/jni/png/LICENSE b/project/jni/png/LICENSE deleted file mode 100644 index 4cda4fa0a..000000000 --- a/project/jni/png/LICENSE +++ /dev/null @@ -1,133 +0,0 @@ - -This copy of the libpng notices is provided for your convenience. In case of -any discrepancy between this copy and the notices in the file png.h that is -included in the libpng distribution, the latter shall prevail. - -COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: - -If you modify libpng you may insert additional notices immediately following -this sentence. - -This code is released under the libpng license. - -libpng versions 1.0.7, July 1, 2000 through 1.6.34, September 29, 2017 are -Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are -derived from libpng-1.0.6, and are distributed according to the same -disclaimer and license as libpng-1.0.6 with the following individuals -added to the list of Contributing Authors: - - Simon-Pierre Cadieux - Eric S. Raymond - Mans Rullgard - Cosmin Truta - Gilles Vollant - James Yu - Mandar Sahastrabuddhe - Google Inc. - Vadim Barkov - -and with the following additions to the disclaimer: - - There is no warranty against interference with your enjoyment of the - library or against infringement. There is no warranty that our - efforts or the library will fulfill any of your particular purposes - or needs. This library is provided with all faults, and the entire - risk of satisfactory quality, performance, accuracy, and effort is with - the user. - -Some files in the "contrib" directory and some configure-generated -files that are distributed with libpng have other copyright owners and -are released under other open source licenses. - -libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are -Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from -libpng-0.96, and are distributed according to the same disclaimer and -license as libpng-0.96, with the following individuals added to the list -of Contributing Authors: - - Tom Lane - Glenn Randers-Pehrson - Willem van Schaik - -libpng versions 0.89, June 1996, through 0.96, May 1997, are -Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88, -and are distributed according to the same disclaimer and license as -libpng-0.88, with the following individuals added to the list of -Contributing Authors: - - John Bowler - Kevin Bracey - Sam Bushell - Magnus Holmgren - Greg Roelofs - Tom Tanner - -Some files in the "scripts" directory have other copyright owners -but are released under this license. - -libpng versions 0.5, May 1995, through 0.88, January 1996, are -Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. - -For the purposes of this copyright and license, "Contributing Authors" -is defined as the following set of individuals: - - Andreas Dilger - Dave Martindale - Guy Eric Schalnat - Paul Schmidt - Tim Wegner - -The PNG Reference Library is supplied "AS IS". The Contributing Authors -and Group 42, Inc. disclaim all warranties, expressed or implied, -including, without limitation, the warranties of merchantability and of -fitness for any purpose. The Contributing Authors and Group 42, Inc. -assume no liability for direct, indirect, incidental, special, exemplary, -or consequential damages, which may result from the use of the PNG -Reference Library, even if advised of the possibility of such damage. - -Permission is hereby granted to use, copy, modify, and distribute this -source code, or portions hereof, for any purpose, without fee, subject -to the following restrictions: - - 1. The origin of this source code must not be misrepresented. - - 2. Altered versions must be plainly marked as such and must not - be misrepresented as being the original source. - - 3. This Copyright notice may not be removed or altered from any - source or altered source distribution. - -The Contributing Authors and Group 42, Inc. specifically permit, without -fee, and encourage the use of this source code as a component to -supporting the PNG file format in commercial products. If you use this -source code in a product, acknowledgment is not required but would be -appreciated. - -END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE. - -TRADEMARK: - -The name "libpng" has not been registered by the Copyright owner -as a trademark in any jurisdiction. However, because libpng has -been distributed and maintained world-wide, continually since 1995, -the Copyright owner claims "common-law trademark protection" in any -jurisdiction where common-law trademark is recognized. - -OSI CERTIFICATION: - -Libpng is OSI Certified Open Source Software. OSI Certified Open Source is -a certification mark of the Open Source Initiative. OSI has not addressed -the additional disclaimers inserted at version 1.0.7. - -EXPORT CONTROL: - -The Copyright owner believes that the Export Control Classification -Number (ECCN) for libpng is EAR99, which means not subject to export -controls or International Traffic in Arms Regulations (ITAR) because -it is open source, publicly available software, that does not contain -any encryption software. See the EAR, paragraphs 734.3(b)(3) and -734.7(b). - -Glenn Randers-Pehrson -glennrp at users.sourceforge.net -September 29, 2017 diff --git a/project/jni/png/README b/project/jni/png/README deleted file mode 100644 index 0da5a5ef8..000000000 --- a/project/jni/png/README +++ /dev/null @@ -1,222 +0,0 @@ -README for libpng version 1.6.34 - September 29, 2017 (shared library 16.0) -See the note about version numbers near the top of png.h - -See INSTALL for instructions on how to install libpng. - -Libpng comes in several distribution formats. Get libpng-*.tar.gz or -libpng-*.tar.xz or if you want UNIX-style line endings in the text files, -or lpng*.7z or lpng*.zip if you want DOS-style line endings. - -Version 0.89 was the first official release of libpng. Don't let the -fact that it's the first release fool you. The libpng library has been in -extensive use and testing since mid-1995. By late 1997 it had -finally gotten to the stage where there hadn't been significant -changes to the API in some time, and people have a bad feeling about -libraries with versions < 1.0. Version 1.0.0 was released in -March 1998. - -**** -Note that some of the changes to the png_info structure render this -version of the library binary incompatible with libpng-0.89 or -earlier versions if you are using a shared library. The type of the -"filler" parameter for png_set_filler() has changed from png_byte to -png_uint_32, which will affect shared-library applications that use -this function. - -To avoid problems with changes to the internals of the png info_struct, -new APIs have been made available in 0.95 to avoid direct application -access to info_ptr. These functions are the png_set_ and -png_get_ functions. These functions should be used when -accessing/storing the info_struct data, rather than manipulating it -directly, to avoid such problems in the future. - -It is important to note that the APIs did not make current programs -that access the info struct directly incompatible with the new -library, through libpng-1.2.x. In libpng-1.4.x, which was meant to -be a transitional release, members of the png_struct and the -info_struct can still be accessed, but the compiler will issue a -warning about deprecated usage. Since libpng-1.5.0, direct access -to these structs is not allowed, and the definitions of the structs -reside in private pngstruct.h and pnginfo.h header files that are not -accessible to applications. It is strongly suggested that new -programs use the new APIs (as shown in example.c and pngtest.c), and -older programs be converted to the new format, to facilitate upgrades -in the future. -**** - -Additions since 0.90 include the ability to compile libpng as a -Windows DLL, and new APIs for accessing data in the info struct. -Experimental functions include the ability to set weighting and cost -factors for row filter selection, direct reads of integers from buffers -on big-endian processors that support misaligned data access, faster -methods of doing alpha composition, and more accurate 16->8 bit color -conversion. - -The additions since 0.89 include the ability to read from a PNG stream -which has had some (or all) of the signature bytes read by the calling -application. This also allows the reading of embedded PNG streams that -do not have the PNG file signature. As well, it is now possible to set -the library action on the detection of chunk CRC errors. It is possible -to set different actions based on whether the CRC error occurred in a -critical or an ancillary chunk. - -The changes made to the library, and bugs fixed are based on discussions -on the PNG-implement mailing list and not on material submitted -privately to Guy, Andreas, or Glenn. They will forward any good -suggestions to the list. - -For a detailed description on using libpng, read libpng-manual.txt. For -examples of libpng in a program, see example.c and pngtest.c. For usage -information and restrictions (what little they are) on libpng, see -png.h. For a description on using zlib (the compression library used by -libpng) and zlib's restrictions, see zlib.h - -I have included a general makefile, as well as several machine and -compiler specific ones, but you may have to modify one for your own needs. - -You should use zlib 1.0.4 or later to run this, but it MAY work with -versions as old as zlib 0.95. Even so, there are bugs in older zlib -versions which can cause the output of invalid compression streams for -some images. You will definitely need zlib 1.0.4 or later if you are -taking advantage of the MS-DOS "far" structure allocation for the small -and medium memory models. You should also note that zlib is a -compression library that is useful for more things than just PNG files. -You can use zlib as a drop-in replacement for fread() and fwrite() if -you are so inclined. - -zlib should be available at the same place that libpng is, or at zlib.net. - -You may also want a copy of the PNG specification. It is available -as an RFC, a W3C Recommendation, and an ISO/IEC Standard. You can find -these at http://www.libpng.org/pub/png/pngdocs.html . - -This code is currently being archived at libpng.sourceforge.io in the -[DOWNLOAD] area, and at http://libpng.download/src . If you -can't find it in any of those places, e-mail me, and I'll help you find it. - -I am not a lawyer, but I believe that the Export Control Classification -Number (ECCN) for libpng is EAR99, which means not subject to export -controls or International Traffic in Arms Regulations (ITAR) because it -is open source, publicly available software, that does not contain any -encryption software. See the EAR, paragraphs 734.3(b)(3) and 734.7(b). - -If you have any code changes, requests, problems, etc., please e-mail -them to me. Also, I'd appreciate any make files or project files, -and any modifications you needed to make to get libpng to compile, -along with a #define variable to tell what compiler/system you are on. -If you needed to add transformations to libpng, or wish libpng would -provide the image in a different way, drop me a note (and code, if -possible), so I can consider supporting the transformation. -Finally, if you get any warning messages when compiling libpng -(note: not zlib), and they are easy to fix, I'd appreciate the -fix. Please mention "libpng" somewhere in the subject line. Thanks. - -This release was created and will be supported by myself (of course -based in a large way on Guy's and Andreas' earlier work), and the PNG -development group. - -Send comments/corrections/commendations to png-mng-implement at -lists.sourceforge.net (subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-implement -to subscribe) or to glennrp at users.sourceforge.net - -You can't reach Guy, the original libpng author, at the addresses -given in previous versions of this document. He and Andreas will -read mail addressed to the png-implement list, however. - -Please do not send general questions about PNG. Send them to -png-mng-misc at lists.sf.net (subscription required; visit -https://lists.sourceforge.net/lists/listinfo/png-mng-misc to -subscribe). If you have a question about something -in the PNG specification that is related to using libpng, send it -to me. Send me any questions that start with "I was using libpng, -and ...". If in doubt, send questions to me. I'll bounce them -to others, if necessary. - -Please do not send suggestions on how to change PNG. We have -been discussing PNG for twenty years now, and it is official and -finished. If you have suggestions for libpng, however, I'll -gladly listen. Even if your suggestion is not used immediately, -it may be used later. - -Files in this distribution: - - ANNOUNCE => Announcement of this version, with recent changes - CHANGES => Description of changes between libpng versions - KNOWNBUG => List of known bugs and deficiencies - LICENSE => License to use and redistribute libpng - README => This file - TODO => Things not implemented in the current library - Y2KINFO => Statement of Y2K compliance - example.c => Example code for using libpng functions - libpng.3 => manual page for libpng (includes libpng-manual.txt) - libpng-manual.txt => Description of libpng and its functions - libpngpf.3 => manual page for libpng's private functions - png.5 => manual page for the PNG format - png.c => Basic interface functions common to library - png.h => Library function and interface declarations (public) - pngpriv.h => Library function and interface declarations (private) - pngconf.h => System specific library configuration (public) - pngstruct.h => png_struct declaration (private) - pnginfo.h => png_info struct declaration (private) - pngdebug.h => debugging macros (private) - pngerror.c => Error/warning message I/O functions - pngget.c => Functions for retrieving info from struct - pngmem.c => Memory handling functions - pngbar.png => PNG logo, 88x31 - pngnow.png => PNG logo, 98x31 - pngpread.c => Progressive reading functions - pngread.c => Read data/helper high-level functions - pngrio.c => Lowest-level data read I/O functions - pngrtran.c => Read data transformation functions - pngrutil.c => Read data utility functions - pngset.c => Functions for storing data into the info_struct - pngtest.c => Library test program - pngtest.png => Library test sample image - pngtrans.c => Common data transformation functions - pngwio.c => Lowest-level write I/O functions - pngwrite.c => High-level write functions - pngwtran.c => Write data transformations - pngwutil.c => Write utility functions - arm => Contains optimized code for the ARM platform - powerpc => Contains optimized code for the PowerPC platform - contrib => Contributions - arm-neon => Optimized code for ARM-NEON platform - powerpc-vsx => Optimized code for POWERPC-VSX platform - examples => Example programs - gregbook => source code for PNG reading and writing, from - Greg Roelofs' "PNG: The Definitive Guide", - O'Reilly, 1999 - libtests => Test programs - mips-msa => Optimized code for MIPS-MSA platform - pngminim => Minimal decoder, encoder, and progressive decoder - programs demonstrating use of pngusr.dfa - pngminus => Simple pnm2png and png2pnm programs - pngsuite => Test images - testpngs - tools => Various tools - visupng => Contains a MSVC workspace for VisualPng - intel => Optimized code for INTEL-SSE2 platform - mips => Optimized code for MIPS platform - projects => Contains project files and workspaces for - building a DLL - owatcom => Contains a WATCOM project for building libpng - visualc71 => Contains a Microsoft Visual C++ (MSVC) - workspace for building libpng and zlib - vstudio => Contains a Microsoft Visual C++ (MSVC) - workspace for building libpng and zlib - scripts => Directory containing scripts for building libpng: - (see scripts/README.txt for the list of scripts) - -Good luck, and happy coding. - --Glenn Randers-Pehrson (current maintainer, since 1998) - Internet: glennrp at users.sourceforge.net - --Andreas Eric Dilger (former maintainer, 1996-1997) - Internet: adilger at enel.ucalgary.ca - Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/ - --Guy Eric Schalnat (original author and former maintainer, 1995-1996) - (formerly of Group 42, Inc) - Internet: gschal at infinet.com diff --git a/project/jni/png/include/png.h b/project/jni/png/include/png.h deleted file mode 100644 index 4c873f5c2..000000000 --- a/project/jni/png/include/png.h +++ /dev/null @@ -1,3278 +0,0 @@ - -/* png.h - header file for PNG reference library - * - * libpng version 1.6.34, September 29, 2017 - * - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license (See LICENSE, below) - * - * Authors and maintainers: - * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat - * libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger - * libpng versions 0.97, January 1998, through 1.6.34, September 29, 2017: - * Glenn Randers-Pehrson. - * See also "Contributing Authors", below. - */ - -/* - * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: - * - * If you modify libpng you may insert additional notices immediately following - * this sentence. - * - * This code is released under the libpng license. - * - * libpng versions 1.0.7, July 1, 2000 through 1.6.34, September 29, 2017 are - * Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are - * derived from libpng-1.0.6, and are distributed according to the same - * disclaimer and license as libpng-1.0.6 with the following individuals - * added to the list of Contributing Authors: - * - * Simon-Pierre Cadieux - * Eric S. Raymond - * Mans Rullgard - * Cosmin Truta - * Gilles Vollant - * James Yu - * Mandar Sahastrabuddhe - * Google Inc. - * Vadim Barkov - * - * and with the following additions to the disclaimer: - * - * There is no warranty against interference with your enjoyment of the - * library or against infringement. There is no warranty that our - * efforts or the library will fulfill any of your particular purposes - * or needs. This library is provided with all faults, and the entire - * risk of satisfactory quality, performance, accuracy, and effort is with - * the user. - * - * Some files in the "contrib" directory and some configure-generated - * files that are distributed with libpng have other copyright owners and - * are released under other open source licenses. - * - * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are - * Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from - * libpng-0.96, and are distributed according to the same disclaimer and - * license as libpng-0.96, with the following individuals added to the list - * of Contributing Authors: - * - * Tom Lane - * Glenn Randers-Pehrson - * Willem van Schaik - * - * libpng versions 0.89, June 1996, through 0.96, May 1997, are - * Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88, - * and are distributed according to the same disclaimer and license as - * libpng-0.88, with the following individuals added to the list of - * Contributing Authors: - * - * John Bowler - * Kevin Bracey - * Sam Bushell - * Magnus Holmgren - * Greg Roelofs - * Tom Tanner - * - * Some files in the "scripts" directory have other copyright owners - * but are released under this license. - * - * libpng versions 0.5, May 1995, through 0.88, January 1996, are - * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. - * - * For the purposes of this copyright and license, "Contributing Authors" - * is defined as the following set of individuals: - * - * Andreas Dilger - * Dave Martindale - * Guy Eric Schalnat - * Paul Schmidt - * Tim Wegner - * - * The PNG Reference Library is supplied "AS IS". The Contributing Authors - * and Group 42, Inc. disclaim all warranties, expressed or implied, - * including, without limitation, the warranties of merchantability and of - * fitness for any purpose. The Contributing Authors and Group 42, Inc. - * assume no liability for direct, indirect, incidental, special, exemplary, - * or consequential damages, which may result from the use of the PNG - * Reference Library, even if advised of the possibility of such damage. - * - * Permission is hereby granted to use, copy, modify, and distribute this - * source code, or portions hereof, for any purpose, without fee, subject - * to the following restrictions: - * - * 1. The origin of this source code must not be misrepresented. - * - * 2. Altered versions must be plainly marked as such and must not - * be misrepresented as being the original source. - * - * 3. This Copyright notice may not be removed or altered from any - * source or altered source distribution. - * - * The Contributing Authors and Group 42, Inc. specifically permit, without - * fee, and encourage the use of this source code as a component to - * supporting the PNG file format in commercial products. If you use this - * source code in a product, acknowledgment is not required but would be - * appreciated. - * - * END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE. - * - * TRADEMARK: - * - * The name "libpng" has not been registered by the Copyright owner - * as a trademark in any jurisdiction. However, because libpng has - * been distributed and maintained world-wide, continually since 1995, - * the Copyright owner claims "common-law trademark protection" in any - * jurisdiction where common-law trademark is recognized. - * - * OSI CERTIFICATION: - * - * Libpng is OSI Certified Open Source Software. OSI Certified Open Source is - * a certification mark of the Open Source Initiative. OSI has not addressed - * the additional disclaimers inserted at version 1.0.7. - * - * EXPORT CONTROL: - * - * The Copyright owner believes that the Export Control Classification - * Number (ECCN) for libpng is EAR99, which means not subject to export - * controls or International Traffic in Arms Regulations (ITAR) because - * it is open source, publicly available software, that does not contain - * any encryption software. See the EAR, paragraphs 734.3(b)(3) and - * 734.7(b). - */ - -/* - * A "png_get_copyright" function is available, for convenient use in "about" - * boxes and the like: - * - * printf("%s", png_get_copyright(NULL)); - * - * Also, the PNG logo (in PNG format, of course) is supplied in the - * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31). - */ - -/* - * The contributing authors would like to thank all those who helped - * with testing, bug fixes, and patience. This wouldn't have been - * possible without all of you. - * - * Thanks to Frank J. T. Wojcik for helping with the documentation. - */ - -/* Note about libpng version numbers: - * - * Due to various miscommunications, unforeseen code incompatibilities - * and occasional factors outside the authors' control, version numbering - * on the library has not always been consistent and straightforward. - * The following table summarizes matters since version 0.89c, which was - * the first widely used release: - * - * source png.h png.h shared-lib - * version string int version - * ------- ------ ----- ---------- - * 0.89c "1.0 beta 3" 0.89 89 1.0.89 - * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90] - * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95] - * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96] - * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97] - * 0.97c 0.97 97 2.0.97 - * 0.98 0.98 98 2.0.98 - * 0.99 0.99 98 2.0.99 - * 0.99a-m 0.99 99 2.0.99 - * 1.00 1.00 100 2.1.0 [100 should be 10000] - * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000] - * 1.0.1 png.h string is 10001 2.1.0 - * 1.0.1a-e identical to the 10002 from here on, the shared library - * 1.0.2 source version) 10002 is 2.V where V is the source code - * 1.0.2a-b 10003 version, except as noted. - * 1.0.3 10003 - * 1.0.3a-d 10004 - * 1.0.4 10004 - * 1.0.4a-f 10005 - * 1.0.5 (+ 2 patches) 10005 - * 1.0.5a-d 10006 - * 1.0.5e-r 10100 (not source compatible) - * 1.0.5s-v 10006 (not binary compatible) - * 1.0.6 (+ 3 patches) 10006 (still binary incompatible) - * 1.0.6d-f 10007 (still binary incompatible) - * 1.0.6g 10007 - * 1.0.6h 10007 10.6h (testing xy.z so-numbering) - * 1.0.6i 10007 10.6i - * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0) - * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible) - * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible) - * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible) - * 1.0.7 1 10007 (still compatible) - * ... - * 1.0.19 10 10019 10.so.0.19[.0] - * ... - * 1.2.59 13 10257 12.so.0.59[.0] - * ... - * 1.5.30 15 10527 15.so.15.30[.0] - * ... - * 1.6.34 16 10633 16.so.16.34[.0] - * - * Henceforth the source version will match the shared-library major - * and minor numbers; the shared-library major version number will be - * used for changes in backward compatibility, as it is intended. The - * PNG_LIBPNG_VER macro, which is not used within libpng but is available - * for applications, is an unsigned integer of the form xyyzz corresponding - * to the source version x.y.z (leading zeros in y and z). Beta versions - * were given the previous public release number plus a letter, until - * version 1.0.6j; from then on they were given the upcoming public - * release number plus "betaNN" or "rcNN". - * - * Binary incompatibility exists only when applications make direct access - * to the info_ptr or png_ptr members through png.h, and the compiled - * application is loaded with a different version of the library. - * - * DLLNUM will change each time there are forward or backward changes - * in binary compatibility (e.g., when a new feature is added). - * - * See libpng.txt or libpng.3 for more information. The PNG specification - * is available as a W3C Recommendation and as an ISO Specification, - * - * - * If you just need to read a PNG file and don't want to read the documentation - * skip to the end of this file and read the section entitled 'simplified API'. - */ - -/* Version information for png.h - this should match the version in png.c */ -#define PNG_LIBPNG_VER_STRING "1.6.34" -#define PNG_HEADER_VERSION_STRING " libpng version 1.6.34 - September 29, 2017\n" - -#define PNG_LIBPNG_VER_SONUM 16 -#define PNG_LIBPNG_VER_DLLNUM 16 - -/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ -#define PNG_LIBPNG_VER_MAJOR 1 -#define PNG_LIBPNG_VER_MINOR 6 -#define PNG_LIBPNG_VER_RELEASE 34 - -/* This should match the numeric part of the final component of - * PNG_LIBPNG_VER_STRING, omitting any leading zero: - */ - -#define PNG_LIBPNG_VER_BUILD 0 - -/* Release Status */ -#define PNG_LIBPNG_BUILD_ALPHA 1 -#define PNG_LIBPNG_BUILD_BETA 2 -#define PNG_LIBPNG_BUILD_RC 3 -#define PNG_LIBPNG_BUILD_STABLE 4 -#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7 - -/* Release-Specific Flags */ -#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with - PNG_LIBPNG_BUILD_STABLE only */ -#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with - PNG_LIBPNG_BUILD_SPECIAL */ -#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with - PNG_LIBPNG_BUILD_PRIVATE */ - -#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE - -/* Careful here. At one time, Guy wanted to use 082, but that would be octal. - * We must not include leading zeros. - * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only - * version 1.0.0 was mis-numbered 100 instead of 10000). From - * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release - */ -#define PNG_LIBPNG_VER 10634 /* 1.6.34 */ - -/* Library configuration: these options cannot be changed after - * the library has been built. - */ -#ifndef PNGLCONF_H -/* If pnglibconf.h is missing, you can - * copy scripts/pnglibconf.h.prebuilt to pnglibconf.h - */ -# include "pnglibconf.h" -#endif - -#ifndef PNG_VERSION_INFO_ONLY -/* Machine specific configuration. */ -# include "pngconf.h" -#endif - -/* - * Added at libpng-1.2.8 - * - * Ref MSDN: Private as priority over Special - * VS_FF_PRIVATEBUILD File *was not* built using standard release - * procedures. If this value is given, the StringFileInfo block must - * contain a PrivateBuild string. - * - * VS_FF_SPECIALBUILD File *was* built by the original company using - * standard release procedures but is a variation of the standard - * file of the same version number. If this value is given, the - * StringFileInfo block must contain a SpecialBuild string. - */ - -#ifdef PNG_USER_PRIVATEBUILD /* From pnglibconf.h */ -# define PNG_LIBPNG_BUILD_TYPE \ - (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE) -#else -# ifdef PNG_LIBPNG_SPECIALBUILD -# define PNG_LIBPNG_BUILD_TYPE \ - (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL) -# else -# define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE) -# endif -#endif - -#ifndef PNG_VERSION_INFO_ONLY - -/* Inhibit C++ name-mangling for libpng functions but not for system calls. */ -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -/* Version information for C files, stored in png.c. This had better match - * the version above. - */ -#define png_libpng_ver png_get_header_ver(NULL) - -/* This file is arranged in several sections: - * - * 1. [omitted] - * 2. Any configuration options that can be specified by for the application - * code when it is built. (Build time configuration is in pnglibconf.h) - * 3. Type definitions (base types are defined in pngconf.h), structure - * definitions. - * 4. Exported library functions. - * 5. Simplified API. - * 6. Implementation options. - * - * The library source code has additional files (principally pngpriv.h) that - * allow configuration of the library. - */ - -/* Section 1: [omitted] */ - -/* Section 2: run time configuration - * See pnglibconf.h for build time configuration - * - * Run time configuration allows the application to choose between - * implementations of certain arithmetic APIs. The default is set - * at build time and recorded in pnglibconf.h, but it is safe to - * override these (and only these) settings. Note that this won't - * change what the library does, only application code, and the - * settings can (and probably should) be made on a per-file basis - * by setting the #defines before including png.h - * - * Use macros to read integers from PNG data or use the exported - * functions? - * PNG_USE_READ_MACROS: use the macros (see below) Note that - * the macros evaluate their argument multiple times. - * PNG_NO_USE_READ_MACROS: call the relevant library function. - * - * Use the alternative algorithm for compositing alpha samples that - * does not use division? - * PNG_READ_COMPOSITE_NODIV_SUPPORTED: use the 'no division' - * algorithm. - * PNG_NO_READ_COMPOSITE_NODIV: use the 'division' algorithm. - * - * How to handle benign errors if PNG_ALLOW_BENIGN_ERRORS is - * false? - * PNG_ALLOW_BENIGN_ERRORS: map calls to the benign error - * APIs to png_warning. - * Otherwise the calls are mapped to png_error. - */ - -/* Section 3: type definitions, including structures and compile time - * constants. - * See pngconf.h for base types that vary by machine/system - */ - -/* This triggers a compiler error in png.c, if png.c and png.h - * do not agree upon the version number. - */ -typedef char* png_libpng_version_1_6_34; - -/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info. - * - * png_struct is the cache of information used while reading or writing a single - * PNG file. One of these is always required, although the simplified API - * (below) hides the creation and destruction of it. - */ -typedef struct png_struct_def png_struct; -typedef const png_struct * png_const_structp; -typedef png_struct * png_structp; -typedef png_struct * * png_structpp; - -/* png_info contains information read from or to be written to a PNG file. One - * or more of these must exist while reading or creating a PNG file. The - * information is not used by libpng during read but is used to control what - * gets written when a PNG file is created. "png_get_" function calls read - * information during read and "png_set_" functions calls write information - * when creating a PNG. - * been moved into a separate header file that is not accessible to - * applications. Read libpng-manual.txt or libpng.3 for more info. - */ -typedef struct png_info_def png_info; -typedef png_info * png_infop; -typedef const png_info * png_const_infop; -typedef png_info * * png_infopp; - -/* Types with names ending 'p' are pointer types. The corresponding types with - * names ending 'rp' are identical pointer types except that the pointer is - * marked 'restrict', which means that it is the only pointer to the object - * passed to the function. Applications should not use the 'restrict' types; - * it is always valid to pass 'p' to a pointer with a function argument of the - * corresponding 'rp' type. Different compilers have different rules with - * regard to type matching in the presence of 'restrict'. For backward - * compatibility libpng callbacks never have 'restrict' in their parameters and, - * consequentially, writing portable application code is extremely difficult if - * an attempt is made to use 'restrict'. - */ -typedef png_struct * PNG_RESTRICT png_structrp; -typedef const png_struct * PNG_RESTRICT png_const_structrp; -typedef png_info * PNG_RESTRICT png_inforp; -typedef const png_info * PNG_RESTRICT png_const_inforp; - -/* Three color definitions. The order of the red, green, and blue, (and the - * exact size) is not important, although the size of the fields need to - * be png_byte or png_uint_16 (as defined below). - */ -typedef struct png_color_struct -{ - png_byte red; - png_byte green; - png_byte blue; -} png_color; -typedef png_color * png_colorp; -typedef const png_color * png_const_colorp; -typedef png_color * * png_colorpp; - -typedef struct png_color_16_struct -{ - png_byte index; /* used for palette files */ - png_uint_16 red; /* for use in red green blue files */ - png_uint_16 green; - png_uint_16 blue; - png_uint_16 gray; /* for use in grayscale files */ -} png_color_16; -typedef png_color_16 * png_color_16p; -typedef const png_color_16 * png_const_color_16p; -typedef png_color_16 * * png_color_16pp; - -typedef struct png_color_8_struct -{ - png_byte red; /* for use in red green blue files */ - png_byte green; - png_byte blue; - png_byte gray; /* for use in grayscale files */ - png_byte alpha; /* for alpha channel files */ -} png_color_8; -typedef png_color_8 * png_color_8p; -typedef const png_color_8 * png_const_color_8p; -typedef png_color_8 * * png_color_8pp; - -/* - * The following two structures are used for the in-core representation - * of sPLT chunks. - */ -typedef struct png_sPLT_entry_struct -{ - png_uint_16 red; - png_uint_16 green; - png_uint_16 blue; - png_uint_16 alpha; - png_uint_16 frequency; -} png_sPLT_entry; -typedef png_sPLT_entry * png_sPLT_entryp; -typedef const png_sPLT_entry * png_const_sPLT_entryp; -typedef png_sPLT_entry * * png_sPLT_entrypp; - -/* When the depth of the sPLT palette is 8 bits, the color and alpha samples - * occupy the LSB of their respective members, and the MSB of each member - * is zero-filled. The frequency member always occupies the full 16 bits. - */ - -typedef struct png_sPLT_struct -{ - png_charp name; /* palette name */ - png_byte depth; /* depth of palette samples */ - png_sPLT_entryp entries; /* palette entries */ - png_int_32 nentries; /* number of palette entries */ -} png_sPLT_t; -typedef png_sPLT_t * png_sPLT_tp; -typedef const png_sPLT_t * png_const_sPLT_tp; -typedef png_sPLT_t * * png_sPLT_tpp; - -#ifdef PNG_TEXT_SUPPORTED -/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file, - * and whether that contents is compressed or not. The "key" field - * points to a regular zero-terminated C string. The "text" fields can be a - * regular C string, an empty string, or a NULL pointer. - * However, the structure returned by png_get_text() will always contain - * the "text" field as a regular zero-terminated C string (possibly - * empty), never a NULL pointer, so it can be safely used in printf() and - * other string-handling functions. Note that the "itxt_length", "lang", and - * "lang_key" members of the structure only exist when the library is built - * with iTXt chunk support. Prior to libpng-1.4.0 the library was built by - * default without iTXt support. Also note that when iTXt *is* supported, - * the "lang" and "lang_key" fields contain NULL pointers when the - * "compression" field contains * PNG_TEXT_COMPRESSION_NONE or - * PNG_TEXT_COMPRESSION_zTXt. Note that the "compression value" is not the - * same as what appears in the PNG tEXt/zTXt/iTXt chunk's "compression flag" - * which is always 0 or 1, or its "compression method" which is always 0. - */ -typedef struct png_text_struct -{ - int compression; /* compression value: - -1: tEXt, none - 0: zTXt, deflate - 1: iTXt, none - 2: iTXt, deflate */ - png_charp key; /* keyword, 1-79 character description of "text" */ - png_charp text; /* comment, may be an empty string (ie "") - or a NULL pointer */ - png_size_t text_length; /* length of the text string */ - png_size_t itxt_length; /* length of the itxt string */ - png_charp lang; /* language code, 0-79 characters - or a NULL pointer */ - png_charp lang_key; /* keyword translated UTF-8 string, 0 or more - chars or a NULL pointer */ -} png_text; -typedef png_text * png_textp; -typedef const png_text * png_const_textp; -typedef png_text * * png_textpp; -#endif - -/* Supported compression types for text in PNG files (tEXt, and zTXt). - * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */ -#define PNG_TEXT_COMPRESSION_NONE_WR -3 -#define PNG_TEXT_COMPRESSION_zTXt_WR -2 -#define PNG_TEXT_COMPRESSION_NONE -1 -#define PNG_TEXT_COMPRESSION_zTXt 0 -#define PNG_ITXT_COMPRESSION_NONE 1 -#define PNG_ITXT_COMPRESSION_zTXt 2 -#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */ - -/* png_time is a way to hold the time in an machine independent way. - * Two conversions are provided, both from time_t and struct tm. There - * is no portable way to convert to either of these structures, as far - * as I know. If you know of a portable way, send it to me. As a side - * note - PNG has always been Year 2000 compliant! - */ -typedef struct png_time_struct -{ - png_uint_16 year; /* full year, as in, 1995 */ - png_byte month; /* month of year, 1 - 12 */ - png_byte day; /* day of month, 1 - 31 */ - png_byte hour; /* hour of day, 0 - 23 */ - png_byte minute; /* minute of hour, 0 - 59 */ - png_byte second; /* second of minute, 0 - 60 (for leap seconds) */ -} png_time; -typedef png_time * png_timep; -typedef const png_time * png_const_timep; -typedef png_time * * png_timepp; - -#if defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) ||\ - defined(PNG_USER_CHUNKS_SUPPORTED) -/* png_unknown_chunk is a structure to hold queued chunks for which there is - * no specific support. The idea is that we can use this to queue - * up private chunks for output even though the library doesn't actually - * know about their semantics. - * - * The data in the structure is set by libpng on read and used on write. - */ -typedef struct png_unknown_chunk_t -{ - png_byte name[5]; /* Textual chunk name with '\0' terminator */ - png_byte *data; /* Data, should not be modified on read! */ - png_size_t size; - - /* On write 'location' must be set using the flag values listed below. - * Notice that on read it is set by libpng however the values stored have - * more bits set than are listed below. Always treat the value as a - * bitmask. On write set only one bit - setting multiple bits may cause the - * chunk to be written in multiple places. - */ - png_byte location; /* mode of operation at read time */ -} -png_unknown_chunk; - -typedef png_unknown_chunk * png_unknown_chunkp; -typedef const png_unknown_chunk * png_const_unknown_chunkp; -typedef png_unknown_chunk * * png_unknown_chunkpp; -#endif - -/* Flag values for the unknown chunk location byte. */ -#define PNG_HAVE_IHDR 0x01 -#define PNG_HAVE_PLTE 0x02 -#define PNG_AFTER_IDAT 0x08 - -/* Maximum positive integer used in PNG is (2^31)-1 */ -#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL) -#define PNG_UINT_32_MAX ((png_uint_32)(-1)) -#define PNG_SIZE_MAX ((png_size_t)(-1)) - -/* These are constants for fixed point values encoded in the - * PNG specification manner (x100000) - */ -#define PNG_FP_1 100000 -#define PNG_FP_HALF 50000 -#define PNG_FP_MAX ((png_fixed_point)0x7fffffffL) -#define PNG_FP_MIN (-PNG_FP_MAX) - -/* These describe the color_type field in png_info. */ -/* color type masks */ -#define PNG_COLOR_MASK_PALETTE 1 -#define PNG_COLOR_MASK_COLOR 2 -#define PNG_COLOR_MASK_ALPHA 4 - -/* color types. Note that not all combinations are legal */ -#define PNG_COLOR_TYPE_GRAY 0 -#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE) -#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR) -#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA) -#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA) -/* aliases */ -#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA -#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA - -/* This is for compression type. PNG 1.0-1.2 only define the single type. */ -#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */ -#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE - -/* This is for filter type. PNG 1.0-1.2 only define the single type. */ -#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */ -#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */ -#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE - -/* These are for the interlacing type. These values should NOT be changed. */ -#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */ -#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */ -#define PNG_INTERLACE_LAST 2 /* Not a valid value */ - -/* These are for the oFFs chunk. These values should NOT be changed. */ -#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */ -#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */ -#define PNG_OFFSET_LAST 2 /* Not a valid value */ - -/* These are for the pCAL chunk. These values should NOT be changed. */ -#define PNG_EQUATION_LINEAR 0 /* Linear transformation */ -#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */ -#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */ -#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */ -#define PNG_EQUATION_LAST 4 /* Not a valid value */ - -/* These are for the sCAL chunk. These values should NOT be changed. */ -#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */ -#define PNG_SCALE_METER 1 /* meters per pixel */ -#define PNG_SCALE_RADIAN 2 /* radians per pixel */ -#define PNG_SCALE_LAST 3 /* Not a valid value */ - -/* These are for the pHYs chunk. These values should NOT be changed. */ -#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */ -#define PNG_RESOLUTION_METER 1 /* pixels/meter */ -#define PNG_RESOLUTION_LAST 2 /* Not a valid value */ - -/* These are for the sRGB chunk. These values should NOT be changed. */ -#define PNG_sRGB_INTENT_PERCEPTUAL 0 -#define PNG_sRGB_INTENT_RELATIVE 1 -#define PNG_sRGB_INTENT_SATURATION 2 -#define PNG_sRGB_INTENT_ABSOLUTE 3 -#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */ - -/* This is for text chunks */ -#define PNG_KEYWORD_MAX_LENGTH 79 - -/* Maximum number of entries in PLTE/sPLT/tRNS arrays */ -#define PNG_MAX_PALETTE_LENGTH 256 - -/* These determine if an ancillary chunk's data has been successfully read - * from the PNG header, or if the application has filled in the corresponding - * data in the info_struct to be written into the output file. The values - * of the PNG_INFO_ defines should NOT be changed. - */ -#define PNG_INFO_gAMA 0x0001U -#define PNG_INFO_sBIT 0x0002U -#define PNG_INFO_cHRM 0x0004U -#define PNG_INFO_PLTE 0x0008U -#define PNG_INFO_tRNS 0x0010U -#define PNG_INFO_bKGD 0x0020U -#define PNG_INFO_hIST 0x0040U -#define PNG_INFO_pHYs 0x0080U -#define PNG_INFO_oFFs 0x0100U -#define PNG_INFO_tIME 0x0200U -#define PNG_INFO_pCAL 0x0400U -#define PNG_INFO_sRGB 0x0800U /* GR-P, 0.96a */ -#define PNG_INFO_iCCP 0x1000U /* ESR, 1.0.6 */ -#define PNG_INFO_sPLT 0x2000U /* ESR, 1.0.6 */ -#define PNG_INFO_sCAL 0x4000U /* ESR, 1.0.6 */ -#define PNG_INFO_IDAT 0x8000U /* ESR, 1.0.6 */ -#define PNG_INFO_eXIf 0x10000U /* GR-P, 1.6.31 */ - -/* This is used for the transformation routines, as some of them - * change these values for the row. It also should enable using - * the routines for other purposes. - */ -typedef struct png_row_info_struct -{ - png_uint_32 width; /* width of row */ - png_size_t rowbytes; /* number of bytes in row */ - png_byte color_type; /* color type of row */ - png_byte bit_depth; /* bit depth of row */ - png_byte channels; /* number of channels (1, 2, 3, or 4) */ - png_byte pixel_depth; /* bits per pixel (depth * channels) */ -} png_row_info; - -typedef png_row_info * png_row_infop; -typedef png_row_info * * png_row_infopp; - -/* These are the function types for the I/O functions and for the functions - * that allow the user to override the default I/O functions with his or her - * own. The png_error_ptr type should match that of user-supplied warning - * and error functions, while the png_rw_ptr type should match that of the - * user read/write data functions. Note that the 'write' function must not - * modify the buffer it is passed. The 'read' function, on the other hand, is - * expected to return the read data in the buffer. - */ -typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp)); -typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, png_size_t)); -typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp)); -typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32, - int)); -typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32, - int)); - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED -typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop)); -typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop)); - -/* The following callback receives png_uint_32 row_number, int pass for the - * png_bytep data of the row. When transforming an interlaced image the - * row number is the row number within the sub-image of the interlace pass, so - * the value will increase to the height of the sub-image (not the full image) - * then reset to 0 for the next pass. - * - * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to - * find the output pixel (x,y) given an interlaced sub-image pixel - * (row,col,pass). (See below for these macros.) - */ -typedef PNG_CALLBACK(void, *png_progressive_row_ptr, (png_structp, png_bytep, - png_uint_32, int)); -#endif - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -typedef PNG_CALLBACK(void, *png_user_transform_ptr, (png_structp, png_row_infop, - png_bytep)); -#endif - -#ifdef PNG_USER_CHUNKS_SUPPORTED -typedef PNG_CALLBACK(int, *png_user_chunk_ptr, (png_structp, - png_unknown_chunkp)); -#endif -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED -/* not used anywhere */ -/* typedef PNG_CALLBACK(void, *png_unknown_chunk_ptr, (png_structp)); */ -#endif - -#ifdef PNG_SETJMP_SUPPORTED -/* This must match the function definition in , and the application - * must include this before png.h to obtain the definition of jmp_buf. The - * function is required to be PNG_NORETURN, but this is not checked. If the - * function does return the application will crash via an abort() or similar - * system level call. - * - * If you get a warning here while building the library you may need to make - * changes to ensure that pnglibconf.h records the calling convention used by - * your compiler. This may be very difficult - try using a different compiler - * to build the library! - */ -PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef); -#endif - -/* Transform masks for the high-level interface */ -#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */ -#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */ -#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */ -#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */ -#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */ -#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */ -#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */ -#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */ -#define PNG_TRANSFORM_BGR 0x0080 /* read and write */ -#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */ -#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */ -#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */ -#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only */ -/* Added to libpng-1.2.34 */ -#define PNG_TRANSFORM_STRIP_FILLER_BEFORE PNG_TRANSFORM_STRIP_FILLER -#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */ -/* Added to libpng-1.4.0 */ -#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */ -/* Added to libpng-1.5.4 */ -#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */ -#if INT_MAX >= 0x8000 /* else this might break */ -#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */ -#endif - -/* Flags for MNG supported features */ -#define PNG_FLAG_MNG_EMPTY_PLTE 0x01 -#define PNG_FLAG_MNG_FILTER_64 0x04 -#define PNG_ALL_MNG_FEATURES 0x05 - -/* NOTE: prior to 1.5 these functions had no 'API' style declaration, - * this allowed the zlib default functions to be used on Windows - * platforms. In 1.5 the zlib default malloc (which just calls malloc and - * ignores the first argument) should be completely compatible with the - * following. - */ -typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp, - png_alloc_size_t)); -typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp)); - -/* Section 4: exported functions - * Here are the function definitions most commonly used. This is not - * the place to find out how to use libpng. See libpng-manual.txt for the - * full explanation, see example.c for the summary. This just provides - * a simple one line description of the use of each function. - * - * The PNG_EXPORT() and PNG_EXPORTA() macros used below are defined in - * pngconf.h and in the *.dfn files in the scripts directory. - * - * PNG_EXPORT(ordinal, type, name, (args)); - * - * ordinal: ordinal that is used while building - * *.def files. The ordinal value is only - * relevant when preprocessing png.h with - * the *.dfn files for building symbol table - * entries, and are removed by pngconf.h. - * type: return type of the function - * name: function name - * args: function arguments, with types - * - * When we wish to append attributes to a function prototype we use - * the PNG_EXPORTA() macro instead. - * - * PNG_EXPORTA(ordinal, type, name, (args), attributes); - * - * ordinal, type, name, and args: same as in PNG_EXPORT(). - * attributes: function attributes - */ - -/* Returns the version number of the library */ -PNG_EXPORT(1, png_uint_32, png_access_version_number, (void)); - -/* Tell lib we have already handled the first magic bytes. - * Handling more than 8 bytes from the beginning of the file is an error. - */ -PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes)); - -/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a - * PNG file. Returns zero if the supplied bytes match the 8-byte PNG - * signature, and non-zero otherwise. Having num_to_check == 0 or - * start > 7 will always fail (ie return non-zero). - */ -PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, png_size_t start, - png_size_t num_to_check)); - -/* Simple signature checking function. This is the same as calling - * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n). - */ -#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n)) - -/* Allocate and initialize png_ptr struct for reading, and any other memory. */ -PNG_EXPORTA(4, png_structp, png_create_read_struct, - (png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn), - PNG_ALLOCATED); - -/* Allocate and initialize png_ptr struct for writing, and any other memory */ -PNG_EXPORTA(5, png_structp, png_create_write_struct, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn), - PNG_ALLOCATED); - -PNG_EXPORT(6, png_size_t, png_get_compression_buffer_size, - (png_const_structrp png_ptr)); - -PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structrp png_ptr, - png_size_t size)); - -/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp - * match up. - */ -#ifdef PNG_SETJMP_SUPPORTED -/* This function returns the jmp_buf built in to *png_ptr. It must be - * supplied with an appropriate 'longjmp' function to use on that jmp_buf - * unless the default error function is overridden in which case NULL is - * acceptable. The size of the jmp_buf is checked against the actual size - * allocated by the library - the call will return NULL on a mismatch - * indicating an ABI mismatch. - */ -PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, (png_structrp png_ptr, - png_longjmp_ptr longjmp_fn, size_t jmp_buf_size)); -# define png_jmpbuf(png_ptr) \ - (*png_set_longjmp_fn((png_ptr), longjmp, (sizeof (jmp_buf)))) -#else -# define png_jmpbuf(png_ptr) \ - (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP) -#endif -/* This function should be used by libpng applications in place of - * longjmp(png_ptr->jmpbuf, val). If longjmp_fn() has been set, it - * will use it; otherwise it will call PNG_ABORT(). This function was - * added in libpng-1.5.0. - */ -PNG_EXPORTA(9, void, png_longjmp, (png_const_structrp png_ptr, int val), - PNG_NORETURN); - -#ifdef PNG_READ_SUPPORTED -/* Reset the compression stream */ -PNG_EXPORTA(10, int, png_reset_zstream, (png_structrp png_ptr), PNG_DEPRECATED); -#endif - -/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */ -#ifdef PNG_USER_MEM_SUPPORTED -PNG_EXPORTA(11, png_structp, png_create_read_struct_2, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn, - png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn), - PNG_ALLOCATED); -PNG_EXPORTA(12, png_structp, png_create_write_struct_2, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn, - png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn), - PNG_ALLOCATED); -#endif - -/* Write the PNG file signature. */ -PNG_EXPORT(13, void, png_write_sig, (png_structrp png_ptr)); - -/* Write a PNG chunk - size, type, (optional) data, CRC. */ -PNG_EXPORT(14, void, png_write_chunk, (png_structrp png_ptr, png_const_bytep - chunk_name, png_const_bytep data, png_size_t length)); - -/* Write the start of a PNG chunk - length and chunk name. */ -PNG_EXPORT(15, void, png_write_chunk_start, (png_structrp png_ptr, - png_const_bytep chunk_name, png_uint_32 length)); - -/* Write the data of a PNG chunk started with png_write_chunk_start(). */ -PNG_EXPORT(16, void, png_write_chunk_data, (png_structrp png_ptr, - png_const_bytep data, png_size_t length)); - -/* Finish a chunk started with png_write_chunk_start() (includes CRC). */ -PNG_EXPORT(17, void, png_write_chunk_end, (png_structrp png_ptr)); - -/* Allocate and initialize the info structure */ -PNG_EXPORTA(18, png_infop, png_create_info_struct, (png_const_structrp png_ptr), - PNG_ALLOCATED); - -/* DEPRECATED: this function allowed init structures to be created using the - * default allocation method (typically malloc). Use is deprecated in 1.6.0 and - * the API will be removed in the future. - */ -PNG_EXPORTA(19, void, png_info_init_3, (png_infopp info_ptr, - png_size_t png_info_struct_size), PNG_DEPRECATED); - -/* Writes all the PNG information before the image. */ -PNG_EXPORT(20, void, png_write_info_before_PLTE, - (png_structrp png_ptr, png_const_inforp info_ptr)); -PNG_EXPORT(21, void, png_write_info, - (png_structrp png_ptr, png_const_inforp info_ptr)); - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the information before the actual image data. */ -PNG_EXPORT(22, void, png_read_info, - (png_structrp png_ptr, png_inforp info_ptr)); -#endif - -#ifdef PNG_TIME_RFC1123_SUPPORTED - /* Convert to a US string format: there is no localization support in this - * routine. The original implementation used a 29 character buffer in - * png_struct, this will be removed in future versions. - */ -#if PNG_LIBPNG_VER < 10700 -/* To do: remove this from libpng17 (and from libpng17/png.c and pngstruct.h) */ -PNG_EXPORTA(23, png_const_charp, png_convert_to_rfc1123, (png_structrp png_ptr, - png_const_timep ptime),PNG_DEPRECATED); -#endif -PNG_EXPORT(241, int, png_convert_to_rfc1123_buffer, (char out[29], - png_const_timep ptime)); -#endif - -#ifdef PNG_CONVERT_tIME_SUPPORTED -/* Convert from a struct tm to png_time */ -PNG_EXPORT(24, void, png_convert_from_struct_tm, (png_timep ptime, - const struct tm * ttime)); - -/* Convert from time_t to png_time. Uses gmtime() */ -PNG_EXPORT(25, void, png_convert_from_time_t, (png_timep ptime, time_t ttime)); -#endif /* CONVERT_tIME */ - -#ifdef PNG_READ_EXPAND_SUPPORTED -/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */ -PNG_EXPORT(26, void, png_set_expand, (png_structrp png_ptr)); -PNG_EXPORT(27, void, png_set_expand_gray_1_2_4_to_8, (png_structrp png_ptr)); -PNG_EXPORT(28, void, png_set_palette_to_rgb, (png_structrp png_ptr)); -PNG_EXPORT(29, void, png_set_tRNS_to_alpha, (png_structrp png_ptr)); -#endif - -#ifdef PNG_READ_EXPAND_16_SUPPORTED -/* Expand to 16-bit channels, forces conversion of palette to RGB and expansion - * of a tRNS chunk if present. - */ -PNG_EXPORT(221, void, png_set_expand_16, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* Use blue, green, red order for pixels. */ -PNG_EXPORT(30, void, png_set_bgr, (png_structrp png_ptr)); -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED -/* Expand the grayscale to 24-bit RGB if necessary. */ -PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structrp png_ptr)); -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -/* Reduce RGB to grayscale. */ -#define PNG_ERROR_ACTION_NONE 1 -#define PNG_ERROR_ACTION_WARN 2 -#define PNG_ERROR_ACTION_ERROR 3 -#define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/ - -PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structrp png_ptr, - int error_action, double red, double green)) -PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structrp png_ptr, - int error_action, png_fixed_point red, png_fixed_point green)) - -PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structrp - png_ptr)); -#endif - -#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED -PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth, - png_colorp palette)); -#endif - -#ifdef PNG_READ_ALPHA_MODE_SUPPORTED -/* How the alpha channel is interpreted - this affects how the color channels - * of a PNG file are returned to the calling application when an alpha channel, - * or a tRNS chunk in a palette file, is present. - * - * This has no effect on the way pixels are written into a PNG output - * datastream. The color samples in a PNG datastream are never premultiplied - * with the alpha samples. - * - * The default is to return data according to the PNG specification: the alpha - * channel is a linear measure of the contribution of the pixel to the - * corresponding composited pixel, and the color channels are unassociated - * (not premultiplied). The gamma encoded color channels must be scaled - * according to the contribution and to do this it is necessary to undo - * the encoding, scale the color values, perform the composition and reencode - * the values. This is the 'PNG' mode. - * - * The alternative is to 'associate' the alpha with the color information by - * storing color channel values that have been scaled by the alpha. - * image. These are the 'STANDARD', 'ASSOCIATED' or 'PREMULTIPLIED' modes - * (the latter being the two common names for associated alpha color channels). - * - * For the 'OPTIMIZED' mode, a pixel is treated as opaque only if the alpha - * value is equal to the maximum value. - * - * The final choice is to gamma encode the alpha channel as well. This is - * broken because, in practice, no implementation that uses this choice - * correctly undoes the encoding before handling alpha composition. Use this - * choice only if other serious errors in the software or hardware you use - * mandate it; the typical serious error is for dark halos to appear around - * opaque areas of the composited PNG image because of arithmetic overflow. - * - * The API function png_set_alpha_mode specifies which of these choices to use - * with an enumerated 'mode' value and the gamma of the required output: - */ -#define PNG_ALPHA_PNG 0 /* according to the PNG standard */ -#define PNG_ALPHA_STANDARD 1 /* according to Porter/Duff */ -#define PNG_ALPHA_ASSOCIATED 1 /* as above; this is the normal practice */ -#define PNG_ALPHA_PREMULTIPLIED 1 /* as above */ -#define PNG_ALPHA_OPTIMIZED 2 /* 'PNG' for opaque pixels, else 'STANDARD' */ -#define PNG_ALPHA_BROKEN 3 /* the alpha channel is gamma encoded */ - -PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structrp png_ptr, int mode, - double output_gamma)) -PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr, - int mode, png_fixed_point output_gamma)) -#endif - -#if defined(PNG_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED) -/* The output_gamma value is a screen gamma in libpng terminology: it expresses - * how to decode the output values, not how they are encoded. - */ -#define PNG_DEFAULT_sRGB -1 /* sRGB gamma and color space */ -#define PNG_GAMMA_MAC_18 -2 /* Old Mac '1.8' gamma and color space */ -#define PNG_GAMMA_sRGB 220000 /* Television standards--matches sRGB gamma */ -#define PNG_GAMMA_LINEAR PNG_FP_1 /* Linear */ -#endif - -/* The following are examples of calls to png_set_alpha_mode to achieve the - * required overall gamma correction and, where necessary, alpha - * premultiplication. - * - * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB); - * This is the default libpng handling of the alpha channel - it is not - * pre-multiplied into the color components. In addition the call states - * that the output is for a sRGB system and causes all PNG files without gAMA - * chunks to be assumed to be encoded using sRGB. - * - * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC); - * In this case the output is assumed to be something like an sRGB conformant - * display preceeded by a power-law lookup table of power 1.45. This is how - * early Mac systems behaved. - * - * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_GAMMA_LINEAR); - * This is the classic Jim Blinn approach and will work in academic - * environments where everything is done by the book. It has the shortcoming - * of assuming that input PNG data with no gamma information is linear - this - * is unlikely to be correct unless the PNG files where generated locally. - * Most of the time the output precision will be so low as to show - * significant banding in dark areas of the image. - * - * png_set_expand_16(pp); - * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_DEFAULT_sRGB); - * This is a somewhat more realistic Jim Blinn inspired approach. PNG files - * are assumed to have the sRGB encoding if not marked with a gamma value and - * the output is always 16 bits per component. This permits accurate scaling - * and processing of the data. If you know that your input PNG files were - * generated locally you might need to replace PNG_DEFAULT_sRGB with the - * correct value for your system. - * - * png_set_alpha_mode(pp, PNG_ALPHA_OPTIMIZED, PNG_DEFAULT_sRGB); - * If you just need to composite the PNG image onto an existing background - * and if you control the code that does this you can use the optimization - * setting. In this case you just copy completely opaque pixels to the - * output. For pixels that are not completely transparent (you just skip - * those) you do the composition math using png_composite or png_composite_16 - * below then encode the resultant 8-bit or 16-bit values to match the output - * encoding. - * - * Other cases - * If neither the PNG nor the standard linear encoding work for you because - * of the software or hardware you use then you have a big problem. The PNG - * case will probably result in halos around the image. The linear encoding - * will probably result in a washed out, too bright, image (it's actually too - * contrasty.) Try the ALPHA_OPTIMIZED mode above - this will probably - * substantially reduce the halos. Alternatively try: - * - * png_set_alpha_mode(pp, PNG_ALPHA_BROKEN, PNG_DEFAULT_sRGB); - * This option will also reduce the halos, but there will be slight dark - * halos round the opaque parts of the image where the background is light. - * In the OPTIMIZED mode the halos will be light halos where the background - * is dark. Take your pick - the halos are unavoidable unless you can get - * your hardware/software fixed! (The OPTIMIZED approach is slightly - * faster.) - * - * When the default gamma of PNG files doesn't match the output gamma. - * If you have PNG files with no gamma information png_set_alpha_mode allows - * you to provide a default gamma, but it also sets the ouput gamma to the - * matching value. If you know your PNG files have a gamma that doesn't - * match the output you can take advantage of the fact that - * png_set_alpha_mode always sets the output gamma but only sets the PNG - * default if it is not already set: - * - * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB); - * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC); - * The first call sets both the default and the output gamma values, the - * second call overrides the output gamma without changing the default. This - * is easier than achieving the same effect with png_set_gamma. You must use - * PNG_ALPHA_PNG for the first call - internal checking in png_set_alpha will - * fire if more than one call to png_set_alpha_mode and png_set_background is - * made in the same read operation, however multiple calls with PNG_ALPHA_PNG - * are ignored. - */ - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED -PNG_EXPORT(36, void, png_set_strip_alpha, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ - defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) -PNG_EXPORT(37, void, png_set_swap_alpha, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ - defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) -PNG_EXPORT(38, void, png_set_invert_alpha, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) -/* Add a filler byte to 8-bit or 16-bit Gray or 24-bit or 48-bit RGB images. */ -PNG_EXPORT(39, void, png_set_filler, (png_structrp png_ptr, png_uint_32 filler, - int flags)); -/* The values of the PNG_FILLER_ defines should NOT be changed */ -# define PNG_FILLER_BEFORE 0 -# define PNG_FILLER_AFTER 1 -/* Add an alpha byte to 8-bit or 16-bit Gray or 24-bit or 48-bit RGB images. */ -PNG_EXPORT(40, void, png_set_add_alpha, (png_structrp png_ptr, - png_uint_32 filler, int flags)); -#endif /* READ_FILLER || WRITE_FILLER */ - -#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* Swap bytes in 16-bit depth files. */ -PNG_EXPORT(41, void, png_set_swap, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) -/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */ -PNG_EXPORT(42, void, png_set_packing, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \ - defined(PNG_WRITE_PACKSWAP_SUPPORTED) -/* Swap packing order of pixels in bytes. */ -PNG_EXPORT(43, void, png_set_packswap, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) -/* Converts files to legal bit depths. */ -PNG_EXPORT(44, void, png_set_shift, (png_structrp png_ptr, png_const_color_8p - true_bits)); -#endif - -#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ - defined(PNG_WRITE_INTERLACING_SUPPORTED) -/* Have the code handle the interlacing. Returns the number of passes. - * MUST be called before png_read_update_info or png_start_read_image, - * otherwise it will not have the desired effect. Note that it is still - * necessary to call png_read_row or png_read_rows png_get_image_height - * times for each pass. -*/ -PNG_EXPORT(45, int, png_set_interlace_handling, (png_structrp png_ptr)); -#endif - -#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) -/* Invert monochrome files */ -PNG_EXPORT(46, void, png_set_invert_mono, (png_structrp png_ptr)); -#endif - -#ifdef PNG_READ_BACKGROUND_SUPPORTED -/* Handle alpha and tRNS by replacing with a background color. Prior to - * libpng-1.5.4 this API must not be called before the PNG file header has been - * read. Doing so will result in unexpected behavior and possible warnings or - * errors if the PNG file contains a bKGD chunk. - */ -PNG_FP_EXPORT(47, void, png_set_background, (png_structrp png_ptr, - png_const_color_16p background_color, int background_gamma_code, - int need_expand, double background_gamma)) -PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structrp png_ptr, - png_const_color_16p background_color, int background_gamma_code, - int need_expand, png_fixed_point background_gamma)) -#endif -#ifdef PNG_READ_BACKGROUND_SUPPORTED -# define PNG_BACKGROUND_GAMMA_UNKNOWN 0 -# define PNG_BACKGROUND_GAMMA_SCREEN 1 -# define PNG_BACKGROUND_GAMMA_FILE 2 -# define PNG_BACKGROUND_GAMMA_UNIQUE 3 -#endif - -#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED -/* Scale a 16-bit depth file down to 8-bit, accurately. */ -PNG_EXPORT(229, void, png_set_scale_16, (png_structrp png_ptr)); -#endif - -#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED -#define PNG_READ_16_TO_8_SUPPORTED /* Name prior to 1.5.4 */ -/* Strip the second byte of information from a 16-bit depth file. */ -PNG_EXPORT(48, void, png_set_strip_16, (png_structrp png_ptr)); -#endif - -#ifdef PNG_READ_QUANTIZE_SUPPORTED -/* Turn on quantizing, and reduce the palette to the number of colors - * available. - */ -PNG_EXPORT(49, void, png_set_quantize, (png_structrp png_ptr, - png_colorp palette, int num_palette, int maximum_colors, - png_const_uint_16p histogram, int full_quantize)); -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED -/* The threshold on gamma processing is configurable but hard-wired into the - * library. The following is the floating point variant. - */ -#define PNG_GAMMA_THRESHOLD (PNG_GAMMA_THRESHOLD_FIXED*.00001) - -/* Handle gamma correction. Screen_gamma=(display_exponent). - * NOTE: this API simply sets the screen and file gamma values. It will - * therefore override the value for gamma in a PNG file if it is called after - * the file header has been read - use with care - call before reading the PNG - * file for best results! - * - * These routines accept the same gamma values as png_set_alpha_mode (described - * above). The PNG_GAMMA_ defines and PNG_DEFAULT_sRGB can be passed to either - * API (floating point or fixed.) Notice, however, that the 'file_gamma' value - * is the inverse of a 'screen gamma' value. - */ -PNG_FP_EXPORT(50, void, png_set_gamma, (png_structrp png_ptr, - double screen_gamma, double override_file_gamma)) -PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structrp png_ptr, - png_fixed_point screen_gamma, png_fixed_point override_file_gamma)) -#endif - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -/* Set how many lines between output flushes - 0 for no flushing */ -PNG_EXPORT(51, void, png_set_flush, (png_structrp png_ptr, int nrows)); -/* Flush the current PNG output buffer */ -PNG_EXPORT(52, void, png_write_flush, (png_structrp png_ptr)); -#endif - -/* Optional update palette with requested transformations */ -PNG_EXPORT(53, void, png_start_read_image, (png_structrp png_ptr)); - -/* Optional call to update the users info structure */ -PNG_EXPORT(54, void, png_read_update_info, (png_structrp png_ptr, - png_inforp info_ptr)); - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read one or more rows of image data. */ -PNG_EXPORT(55, void, png_read_rows, (png_structrp png_ptr, png_bytepp row, - png_bytepp display_row, png_uint_32 num_rows)); -#endif - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read a row of data. */ -PNG_EXPORT(56, void, png_read_row, (png_structrp png_ptr, png_bytep row, - png_bytep display_row)); -#endif - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the whole image into memory at once. */ -PNG_EXPORT(57, void, png_read_image, (png_structrp png_ptr, png_bytepp image)); -#endif - -/* Write a row of image data */ -PNG_EXPORT(58, void, png_write_row, (png_structrp png_ptr, - png_const_bytep row)); - -/* Write a few rows of image data: (*row) is not written; however, the type - * is declared as writeable to maintain compatibility with previous versions - * of libpng and to allow the 'display_row' array from read_rows to be passed - * unchanged to write_rows. - */ -PNG_EXPORT(59, void, png_write_rows, (png_structrp png_ptr, png_bytepp row, - png_uint_32 num_rows)); - -/* Write the image data */ -PNG_EXPORT(60, void, png_write_image, (png_structrp png_ptr, png_bytepp image)); - -/* Write the end of the PNG file. */ -PNG_EXPORT(61, void, png_write_end, (png_structrp png_ptr, - png_inforp info_ptr)); - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the end of the PNG file. */ -PNG_EXPORT(62, void, png_read_end, (png_structrp png_ptr, png_inforp info_ptr)); -#endif - -/* Free any memory associated with the png_info_struct */ -PNG_EXPORT(63, void, png_destroy_info_struct, (png_const_structrp png_ptr, - png_infopp info_ptr_ptr)); - -/* Free any memory associated with the png_struct and the png_info_structs */ -PNG_EXPORT(64, void, png_destroy_read_struct, (png_structpp png_ptr_ptr, - png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr)); - -/* Free any memory associated with the png_struct and the png_info_structs */ -PNG_EXPORT(65, void, png_destroy_write_struct, (png_structpp png_ptr_ptr, - png_infopp info_ptr_ptr)); - -/* Set the libpng method of handling chunk CRC errors */ -PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action, - int ancil_action)); - -/* Values for png_set_crc_action() say how to handle CRC errors in - * ancillary and critical chunks, and whether to use the data contained - * therein. Note that it is impossible to "discard" data in a critical - * chunk. For versions prior to 0.90, the action was always error/quit, - * whereas in version 0.90 and later, the action for CRC errors in ancillary - * chunks is warn/discard. These values should NOT be changed. - * - * value action:critical action:ancillary - */ -#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */ -#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */ -#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */ -#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */ -#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */ -#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */ - -#ifdef PNG_WRITE_SUPPORTED -/* These functions give the user control over the scan-line filtering in - * libpng and the compression methods used by zlib. These functions are - * mainly useful for testing, as the defaults should work with most users. - * Those users who are tight on memory or want faster performance at the - * expense of compression can modify them. See the compression library - * header file (zlib.h) for an explination of the compression functions. - */ - -/* Set the filtering method(s) used by libpng. Currently, the only valid - * value for "method" is 0. - */ -PNG_EXPORT(67, void, png_set_filter, (png_structrp png_ptr, int method, - int filters)); -#endif /* WRITE */ - -/* Flags for png_set_filter() to say which filters to use. The flags - * are chosen so that they don't conflict with real filter types - * below, in case they are supplied instead of the #defined constants. - * These values should NOT be changed. - */ -#define PNG_NO_FILTERS 0x00 -#define PNG_FILTER_NONE 0x08 -#define PNG_FILTER_SUB 0x10 -#define PNG_FILTER_UP 0x20 -#define PNG_FILTER_AVG 0x40 -#define PNG_FILTER_PAETH 0x80 -#define PNG_FAST_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP) -#define PNG_ALL_FILTERS (PNG_FAST_FILTERS | PNG_FILTER_AVG | PNG_FILTER_PAETH) - -/* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now. - * These defines should NOT be changed. - */ -#define PNG_FILTER_VALUE_NONE 0 -#define PNG_FILTER_VALUE_SUB 1 -#define PNG_FILTER_VALUE_UP 2 -#define PNG_FILTER_VALUE_AVG 3 -#define PNG_FILTER_VALUE_PAETH 4 -#define PNG_FILTER_VALUE_LAST 5 - -#ifdef PNG_WRITE_SUPPORTED -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* DEPRECATED */ -PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structrp png_ptr, - int heuristic_method, int num_weights, png_const_doublep filter_weights, - png_const_doublep filter_costs)) -PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed, - (png_structrp png_ptr, int heuristic_method, int num_weights, - png_const_fixed_point_p filter_weights, - png_const_fixed_point_p filter_costs)) -#endif /* WRITE_WEIGHTED_FILTER */ - -/* The following are no longer used and will be removed from libpng-1.7: */ -#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */ -#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */ -#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */ -#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */ - -/* Set the library compression level. Currently, valid values range from - * 0 - 9, corresponding directly to the zlib compression levels 0 - 9 - * (0 - no compression, 9 - "maximal" compression). Note that tests have - * shown that zlib compression levels 3-6 usually perform as well as level 9 - * for PNG images, and do considerably fewer caclulations. In the future, - * these values may not correspond directly to the zlib compression levels. - */ -#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED -PNG_EXPORT(69, void, png_set_compression_level, (png_structrp png_ptr, - int level)); - -PNG_EXPORT(70, void, png_set_compression_mem_level, (png_structrp png_ptr, - int mem_level)); - -PNG_EXPORT(71, void, png_set_compression_strategy, (png_structrp png_ptr, - int strategy)); - -/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a - * smaller value of window_bits if it can do so safely. - */ -PNG_EXPORT(72, void, png_set_compression_window_bits, (png_structrp png_ptr, - int window_bits)); - -PNG_EXPORT(73, void, png_set_compression_method, (png_structrp png_ptr, - int method)); -#endif /* WRITE_CUSTOMIZE_COMPRESSION */ - -#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED -/* Also set zlib parameters for compressing non-IDAT chunks */ -PNG_EXPORT(222, void, png_set_text_compression_level, (png_structrp png_ptr, - int level)); - -PNG_EXPORT(223, void, png_set_text_compression_mem_level, (png_structrp png_ptr, - int mem_level)); - -PNG_EXPORT(224, void, png_set_text_compression_strategy, (png_structrp png_ptr, - int strategy)); - -/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a - * smaller value of window_bits if it can do so safely. - */ -PNG_EXPORT(225, void, png_set_text_compression_window_bits, - (png_structrp png_ptr, int window_bits)); - -PNG_EXPORT(226, void, png_set_text_compression_method, (png_structrp png_ptr, - int method)); -#endif /* WRITE_CUSTOMIZE_ZTXT_COMPRESSION */ -#endif /* WRITE */ - -/* These next functions are called for input/output, memory, and error - * handling. They are in the file pngrio.c, pngwio.c, and pngerror.c, - * and call standard C I/O routines such as fread(), fwrite(), and - * fprintf(). These functions can be made to use other I/O routines - * at run time for those applications that need to handle I/O in a - * different manner by calling png_set_???_fn(). See libpng-manual.txt for - * more information. - */ - -#ifdef PNG_STDIO_SUPPORTED -/* Initialize the input/output for the PNG file to the default functions. */ -PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, png_FILE_p fp)); -#endif - -/* Replace the (error and abort), and warning functions with user - * supplied functions. If no messages are to be printed you must still - * write and use replacement functions. The replacement error_fn should - * still do a longjmp to the last setjmp location if you are using this - * method of error handling. If error_fn or warning_fn is NULL, the - * default function will be used. - */ - -PNG_EXPORT(75, void, png_set_error_fn, (png_structrp png_ptr, - png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn)); - -/* Return the user pointer associated with the error functions */ -PNG_EXPORT(76, png_voidp, png_get_error_ptr, (png_const_structrp png_ptr)); - -/* Replace the default data output functions with a user supplied one(s). - * If buffered output is not used, then output_flush_fn can be set to NULL. - * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time - * output_flush_fn will be ignored (and thus can be NULL). - * It is probably a mistake to use NULL for output_flush_fn if - * write_data_fn is not also NULL unless you have built libpng with - * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's - * default flush function, which uses the standard *FILE structure, will - * be used. - */ -PNG_EXPORT(77, void, png_set_write_fn, (png_structrp png_ptr, png_voidp io_ptr, - png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)); - -/* Replace the default data input function with a user supplied one. */ -PNG_EXPORT(78, void, png_set_read_fn, (png_structrp png_ptr, png_voidp io_ptr, - png_rw_ptr read_data_fn)); - -/* Return the user pointer associated with the I/O functions */ -PNG_EXPORT(79, png_voidp, png_get_io_ptr, (png_const_structrp png_ptr)); - -PNG_EXPORT(80, void, png_set_read_status_fn, (png_structrp png_ptr, - png_read_status_ptr read_row_fn)); - -PNG_EXPORT(81, void, png_set_write_status_fn, (png_structrp png_ptr, - png_write_status_ptr write_row_fn)); - -#ifdef PNG_USER_MEM_SUPPORTED -/* Replace the default memory allocation functions with user supplied one(s). */ -PNG_EXPORT(82, void, png_set_mem_fn, (png_structrp png_ptr, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn)); -/* Return the user pointer associated with the memory functions */ -PNG_EXPORT(83, png_voidp, png_get_mem_ptr, (png_const_structrp png_ptr)); -#endif - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED -PNG_EXPORT(84, void, png_set_read_user_transform_fn, (png_structrp png_ptr, - png_user_transform_ptr read_user_transform_fn)); -#endif - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED -PNG_EXPORT(85, void, png_set_write_user_transform_fn, (png_structrp png_ptr, - png_user_transform_ptr write_user_transform_fn)); -#endif - -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED -PNG_EXPORT(86, void, png_set_user_transform_info, (png_structrp png_ptr, - png_voidp user_transform_ptr, int user_transform_depth, - int user_transform_channels)); -/* Return the user pointer associated with the user transform functions */ -PNG_EXPORT(87, png_voidp, png_get_user_transform_ptr, - (png_const_structrp png_ptr)); -#endif - -#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED -/* Return information about the row currently being processed. Note that these - * APIs do not fail but will return unexpected results if called outside a user - * transform callback. Also note that when transforming an interlaced image the - * row number is the row number within the sub-image of the interlace pass, so - * the value will increase to the height of the sub-image (not the full image) - * then reset to 0 for the next pass. - * - * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to - * find the output pixel (x,y) given an interlaced sub-image pixel - * (row,col,pass). (See below for these macros.) - */ -PNG_EXPORT(217, png_uint_32, png_get_current_row_number, (png_const_structrp)); -PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structrp)); -#endif - -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED -/* This callback is called only for *unknown* chunks. If - * PNG_HANDLE_AS_UNKNOWN_SUPPORTED is set then it is possible to set known - * chunks to be treated as unknown, however in this case the callback must do - * any processing required by the chunk (e.g. by calling the appropriate - * png_set_ APIs.) - * - * There is no write support - on write, by default, all the chunks in the - * 'unknown' list are written in the specified position. - * - * The integer return from the callback function is interpreted thus: - * - * negative: An error occurred; png_chunk_error will be called. - * zero: The chunk was not handled, the chunk will be saved. A critical - * chunk will cause an error at this point unless it is to be saved. - * positive: The chunk was handled, libpng will ignore/discard it. - * - * See "INTERACTION WTIH USER CHUNK CALLBACKS" below for important notes about - * how this behavior will change in libpng 1.7 - */ -PNG_EXPORT(88, void, png_set_read_user_chunk_fn, (png_structrp png_ptr, - png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)); -#endif - -#ifdef PNG_USER_CHUNKS_SUPPORTED -PNG_EXPORT(89, png_voidp, png_get_user_chunk_ptr, (png_const_structrp png_ptr)); -#endif - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED -/* Sets the function callbacks for the push reader, and a pointer to a - * user-defined structure available to the callback functions. - */ -PNG_EXPORT(90, void, png_set_progressive_read_fn, (png_structrp png_ptr, - png_voidp progressive_ptr, png_progressive_info_ptr info_fn, - png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn)); - -/* Returns the user pointer associated with the push read functions */ -PNG_EXPORT(91, png_voidp, png_get_progressive_ptr, - (png_const_structrp png_ptr)); - -/* Function to be called when data becomes available */ -PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr, - png_inforp info_ptr, png_bytep buffer, png_size_t buffer_size)); - -/* A function which may be called *only* within png_process_data to stop the - * processing of any more data. The function returns the number of bytes - * remaining, excluding any that libpng has cached internally. A subsequent - * call to png_process_data must supply these bytes again. If the argument - * 'save' is set to true the routine will first save all the pending data and - * will always return 0. - */ -PNG_EXPORT(219, png_size_t, png_process_data_pause, (png_structrp, int save)); - -/* A function which may be called *only* outside (after) a call to - * png_process_data. It returns the number of bytes of data to skip in the - * input. Normally it will return 0, but if it returns a non-zero value the - * application must skip than number of bytes of input data and pass the - * following data to the next call to png_process_data. - */ -PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structrp)); - -/* Function that combines rows. 'new_row' is a flag that should come from - * the callback and be non-NULL if anything needs to be done; the library - * stores its own version of the new data internally and ignores the passed - * in value. - */ -PNG_EXPORT(93, void, png_progressive_combine_row, (png_const_structrp png_ptr, - png_bytep old_row, png_const_bytep new_row)); -#endif /* PROGRESSIVE_READ */ - -PNG_EXPORTA(94, png_voidp, png_malloc, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED); -/* Added at libpng version 1.4.0 */ -PNG_EXPORTA(95, png_voidp, png_calloc, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED); - -/* Added at libpng version 1.2.4 */ -PNG_EXPORTA(96, png_voidp, png_malloc_warn, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED); - -/* Frees a pointer allocated by png_malloc() */ -PNG_EXPORT(97, void, png_free, (png_const_structrp png_ptr, png_voidp ptr)); - -/* Free data that was allocated internally */ -PNG_EXPORT(98, void, png_free_data, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 free_me, int num)); - -/* Reassign responsibility for freeing existing data, whether allocated - * by libpng or by the application; this works on the png_info structure passed - * in, it does not change the state for other png_info structures. - * - * It is unlikely that this function works correctly as of 1.6.0 and using it - * may result either in memory leaks or double free of allocated data. - */ -PNG_EXPORT(99, void, png_data_freer, (png_const_structrp png_ptr, - png_inforp info_ptr, int freer, png_uint_32 mask)); - -/* Assignments for png_data_freer */ -#define PNG_DESTROY_WILL_FREE_DATA 1 -#define PNG_SET_WILL_FREE_DATA 1 -#define PNG_USER_WILL_FREE_DATA 2 -/* Flags for png_ptr->free_me and info_ptr->free_me */ -#define PNG_FREE_HIST 0x0008U -#define PNG_FREE_ICCP 0x0010U -#define PNG_FREE_SPLT 0x0020U -#define PNG_FREE_ROWS 0x0040U -#define PNG_FREE_PCAL 0x0080U -#define PNG_FREE_SCAL 0x0100U -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED -# define PNG_FREE_UNKN 0x0200U -#endif -/* PNG_FREE_LIST 0x0400U removed in 1.6.0 because it is ignored */ -#define PNG_FREE_PLTE 0x1000U -#define PNG_FREE_TRNS 0x2000U -#define PNG_FREE_TEXT 0x4000U -#define PNG_FREE_EXIF 0x8000U /* Added at libpng-1.6.31 */ -#define PNG_FREE_ALL 0xffffU -#define PNG_FREE_MUL 0x4220U /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */ - -#ifdef PNG_USER_MEM_SUPPORTED -PNG_EXPORTA(100, png_voidp, png_malloc_default, (png_const_structrp png_ptr, - png_alloc_size_t size), PNG_ALLOCATED PNG_DEPRECATED); -PNG_EXPORTA(101, void, png_free_default, (png_const_structrp png_ptr, - png_voidp ptr), PNG_DEPRECATED); -#endif - -#ifdef PNG_ERROR_TEXT_SUPPORTED -/* Fatal error in PNG image of libpng - can't continue */ -PNG_EXPORTA(102, void, png_error, (png_const_structrp png_ptr, - png_const_charp error_message), PNG_NORETURN); - -/* The same, but the chunk name is prepended to the error string. */ -PNG_EXPORTA(103, void, png_chunk_error, (png_const_structrp png_ptr, - png_const_charp error_message), PNG_NORETURN); - -#else -/* Fatal error in PNG image of libpng - can't continue */ -PNG_EXPORTA(104, void, png_err, (png_const_structrp png_ptr), PNG_NORETURN); -# define png_error(s1,s2) png_err(s1) -# define png_chunk_error(s1,s2) png_err(s1) -#endif - -#ifdef PNG_WARNINGS_SUPPORTED -/* Non-fatal error in libpng. Can continue, but may have a problem. */ -PNG_EXPORT(105, void, png_warning, (png_const_structrp png_ptr, - png_const_charp warning_message)); - -/* Non-fatal error in libpng, chunk name is prepended to message. */ -PNG_EXPORT(106, void, png_chunk_warning, (png_const_structrp png_ptr, - png_const_charp warning_message)); -#else -# define png_warning(s1,s2) ((void)(s1)) -# define png_chunk_warning(s1,s2) ((void)(s1)) -#endif - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -/* Benign error in libpng. Can continue, but may have a problem. - * User can choose whether to handle as a fatal error or as a warning. */ -PNG_EXPORT(107, void, png_benign_error, (png_const_structrp png_ptr, - png_const_charp warning_message)); - -#ifdef PNG_READ_SUPPORTED -/* Same, chunk name is prepended to message (only during read) */ -PNG_EXPORT(108, void, png_chunk_benign_error, (png_const_structrp png_ptr, - png_const_charp warning_message)); -#endif - -PNG_EXPORT(109, void, png_set_benign_errors, - (png_structrp png_ptr, int allowed)); -#else -# ifdef PNG_ALLOW_BENIGN_ERRORS -# define png_benign_error png_warning -# define png_chunk_benign_error png_chunk_warning -# else -# define png_benign_error png_error -# define png_chunk_benign_error png_chunk_error -# endif -#endif - -/* The png_set_ functions are for storing values in the png_info_struct. - * Similarly, the png_get_ calls are used to read values from the - * png_info_struct, either storing the parameters in the passed variables, or - * setting pointers into the png_info_struct where the data is stored. The - * png_get_ functions return a non-zero value if the data was available - * in info_ptr, or return zero and do not change any of the parameters if the - * data was not available. - * - * These functions should be used instead of directly accessing png_info - * to avoid problems with future changes in the size and internal layout of - * png_info_struct. - */ -/* Returns "flag" if chunk data is valid in info_ptr. */ -PNG_EXPORT(110, png_uint_32, png_get_valid, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 flag)); - -/* Returns number of bytes needed to hold a transformed row. */ -PNG_EXPORT(111, png_size_t, png_get_rowbytes, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -#ifdef PNG_INFO_IMAGE_SUPPORTED -/* Returns row_pointers, which is an array of pointers to scanlines that was - * returned from png_read_png(). - */ -PNG_EXPORT(112, png_bytepp, png_get_rows, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Set row_pointers, which is an array of pointers to scanlines for use - * by png_write_png(). - */ -PNG_EXPORT(113, void, png_set_rows, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytepp row_pointers)); -#endif - -/* Returns number of color channels in image. */ -PNG_EXPORT(114, png_byte, png_get_channels, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -#ifdef PNG_EASY_ACCESS_SUPPORTED -/* Returns image width in pixels. */ -PNG_EXPORT(115, png_uint_32, png_get_image_width, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image height in pixels. */ -PNG_EXPORT(116, png_uint_32, png_get_image_height, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image bit_depth. */ -PNG_EXPORT(117, png_byte, png_get_bit_depth, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image color_type. */ -PNG_EXPORT(118, png_byte, png_get_color_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image filter_type. */ -PNG_EXPORT(119, png_byte, png_get_filter_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image interlace_type. */ -PNG_EXPORT(120, png_byte, png_get_interlace_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image compression_type. */ -PNG_EXPORT(121, png_byte, png_get_compression_type, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); - -/* Returns image resolution in pixels per meter, from pHYs chunk data. */ -PNG_EXPORT(122, png_uint_32, png_get_pixels_per_meter, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); -PNG_EXPORT(123, png_uint_32, png_get_x_pixels_per_meter, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); -PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); - -/* Returns pixel aspect ratio, computed from pHYs chunk data. */ -PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) -PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) - -/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */ -PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); -PNG_EXPORT(127, png_int_32, png_get_y_offset_pixels, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); -PNG_EXPORT(128, png_int_32, png_get_x_offset_microns, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); -PNG_EXPORT(129, png_int_32, png_get_y_offset_microns, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); - -#endif /* EASY_ACCESS */ - -#ifdef PNG_READ_SUPPORTED -/* Returns pointer to signature string read from PNG header */ -PNG_EXPORT(130, png_const_bytep, png_get_signature, (png_const_structrp png_ptr, - png_const_inforp info_ptr)); -#endif - -#ifdef PNG_bKGD_SUPPORTED -PNG_EXPORT(131, png_uint_32, png_get_bKGD, (png_const_structrp png_ptr, - png_inforp info_ptr, png_color_16p *background)); -#endif - -#ifdef PNG_bKGD_SUPPORTED -PNG_EXPORT(132, void, png_set_bKGD, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_color_16p background)); -#endif - -#ifdef PNG_cHRM_SUPPORTED -PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *white_x, double *white_y, double *red_x, - double *red_y, double *green_x, double *green_y, double *blue_x, - double *blue_y)) -PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *red_X, double *red_Y, double *red_Z, - double *green_X, double *green_Y, double *green_Z, double *blue_X, - double *blue_Y, double *blue_Z)) -PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, - png_fixed_point *int_white_x, png_fixed_point *int_white_y, - png_fixed_point *int_red_x, png_fixed_point *int_red_y, - png_fixed_point *int_green_x, png_fixed_point *int_green_y, - png_fixed_point *int_blue_x, png_fixed_point *int_blue_y)) -PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, - png_fixed_point *int_red_X, png_fixed_point *int_red_Y, - png_fixed_point *int_red_Z, png_fixed_point *int_green_X, - png_fixed_point *int_green_Y, png_fixed_point *int_green_Z, - png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y, - png_fixed_point *int_blue_Z)) -#endif - -#ifdef PNG_cHRM_SUPPORTED -PNG_FP_EXPORT(135, void, png_set_cHRM, (png_const_structrp png_ptr, - png_inforp info_ptr, - double white_x, double white_y, double red_x, double red_y, double green_x, - double green_y, double blue_x, double blue_y)) -PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_const_structrp png_ptr, - png_inforp info_ptr, double red_X, double red_Y, double red_Z, - double green_X, double green_Y, double green_Z, double blue_X, - double blue_Y, double blue_Z)) -PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, png_fixed_point int_white_x, - png_fixed_point int_white_y, png_fixed_point int_red_x, - png_fixed_point int_red_y, png_fixed_point int_green_x, - png_fixed_point int_green_y, png_fixed_point int_blue_x, - png_fixed_point int_blue_y)) -PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y, - png_fixed_point int_red_Z, png_fixed_point int_green_X, - png_fixed_point int_green_Y, png_fixed_point int_green_Z, - png_fixed_point int_blue_X, png_fixed_point int_blue_Y, - png_fixed_point int_blue_Z)) -#endif - -#ifdef PNG_eXIf_SUPPORTED -PNG_EXPORT(246, png_uint_32, png_get_eXIf, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytep *exif)); -PNG_EXPORT(247, void, png_set_eXIf, (png_const_structrp png_ptr, - png_inforp info_ptr, const png_bytep exif)); - -PNG_EXPORT(248, png_uint_32, png_get_eXIf_1, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *num_exif, png_bytep *exif)); -PNG_EXPORT(249, void, png_set_eXIf_1, (png_const_structrp png_ptr, - png_inforp info_ptr, const png_uint_32 num_exif, const png_bytep exif)); -#endif - -#ifdef PNG_gAMA_SUPPORTED -PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA, (png_const_structrp png_ptr, - png_const_inforp info_ptr, double *file_gamma)) -PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, - png_fixed_point *int_file_gamma)) -#endif - -#ifdef PNG_gAMA_SUPPORTED -PNG_FP_EXPORT(139, void, png_set_gAMA, (png_const_structrp png_ptr, - png_inforp info_ptr, double file_gamma)) -PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, png_fixed_point int_file_gamma)) -#endif - -#ifdef PNG_hIST_SUPPORTED -PNG_EXPORT(141, png_uint_32, png_get_hIST, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_16p *hist)); -PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_uint_16p hist)); -#endif - -PNG_EXPORT(143, png_uint_32, png_get_IHDR, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *width, png_uint_32 *height, - int *bit_depth, int *color_type, int *interlace_method, - int *compression_method, int *filter_method)); - -PNG_EXPORT(144, void, png_set_IHDR, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_method, int compression_method, - int filter_method)); - -#ifdef PNG_oFFs_SUPPORTED -PNG_EXPORT(145, png_uint_32, png_get_oFFs, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, - int *unit_type)); -#endif - -#ifdef PNG_oFFs_SUPPORTED -PNG_EXPORT(146, void, png_set_oFFs, (png_const_structrp png_ptr, - png_inforp info_ptr, png_int_32 offset_x, png_int_32 offset_y, - int unit_type)); -#endif - -#ifdef PNG_pCAL_SUPPORTED -PNG_EXPORT(147, png_uint_32, png_get_pCAL, (png_const_structrp png_ptr, - png_inforp info_ptr, png_charp *purpose, png_int_32 *X0, - png_int_32 *X1, int *type, int *nparams, png_charp *units, - png_charpp *params)); -#endif - -#ifdef PNG_pCAL_SUPPORTED -PNG_EXPORT(148, void, png_set_pCAL, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_charp purpose, png_int_32 X0, png_int_32 X1, - int type, int nparams, png_const_charp units, png_charpp params)); -#endif - -#ifdef PNG_pHYs_SUPPORTED -PNG_EXPORT(149, png_uint_32, png_get_pHYs, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, - int *unit_type)); -#endif - -#ifdef PNG_pHYs_SUPPORTED -PNG_EXPORT(150, void, png_set_pHYs, (png_const_structrp png_ptr, - png_inforp info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)); -#endif - -PNG_EXPORT(151, png_uint_32, png_get_PLTE, (png_const_structrp png_ptr, - png_inforp info_ptr, png_colorp *palette, int *num_palette)); - -PNG_EXPORT(152, void, png_set_PLTE, (png_structrp png_ptr, - png_inforp info_ptr, png_const_colorp palette, int num_palette)); - -#ifdef PNG_sBIT_SUPPORTED -PNG_EXPORT(153, png_uint_32, png_get_sBIT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_color_8p *sig_bit)); -#endif - -#ifdef PNG_sBIT_SUPPORTED -PNG_EXPORT(154, void, png_set_sBIT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_color_8p sig_bit)); -#endif - -#ifdef PNG_sRGB_SUPPORTED -PNG_EXPORT(155, png_uint_32, png_get_sRGB, (png_const_structrp png_ptr, - png_const_inforp info_ptr, int *file_srgb_intent)); -#endif - -#ifdef PNG_sRGB_SUPPORTED -PNG_EXPORT(156, void, png_set_sRGB, (png_const_structrp png_ptr, - png_inforp info_ptr, int srgb_intent)); -PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_const_structrp png_ptr, - png_inforp info_ptr, int srgb_intent)); -#endif - -#ifdef PNG_iCCP_SUPPORTED -PNG_EXPORT(158, png_uint_32, png_get_iCCP, (png_const_structrp png_ptr, - png_inforp info_ptr, png_charpp name, int *compression_type, - png_bytepp profile, png_uint_32 *proflen)); -#endif - -#ifdef PNG_iCCP_SUPPORTED -PNG_EXPORT(159, void, png_set_iCCP, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_charp name, int compression_type, - png_const_bytep profile, png_uint_32 proflen)); -#endif - -#ifdef PNG_sPLT_SUPPORTED -PNG_EXPORT(160, int, png_get_sPLT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_sPLT_tpp entries)); -#endif - -#ifdef PNG_sPLT_SUPPORTED -PNG_EXPORT(161, void, png_set_sPLT, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_sPLT_tp entries, int nentries)); -#endif - -#ifdef PNG_TEXT_SUPPORTED -/* png_get_text also returns the number of text chunks in *num_text */ -PNG_EXPORT(162, int, png_get_text, (png_const_structrp png_ptr, - png_inforp info_ptr, png_textp *text_ptr, int *num_text)); -#endif - -/* Note while png_set_text() will accept a structure whose text, - * language, and translated keywords are NULL pointers, the structure - * returned by png_get_text will always contain regular - * zero-terminated C strings. They might be empty strings but - * they will never be NULL pointers. - */ - -#ifdef PNG_TEXT_SUPPORTED -PNG_EXPORT(163, void, png_set_text, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_textp text_ptr, int num_text)); -#endif - -#ifdef PNG_tIME_SUPPORTED -PNG_EXPORT(164, png_uint_32, png_get_tIME, (png_const_structrp png_ptr, - png_inforp info_ptr, png_timep *mod_time)); -#endif - -#ifdef PNG_tIME_SUPPORTED -PNG_EXPORT(165, void, png_set_tIME, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_timep mod_time)); -#endif - -#ifdef PNG_tRNS_SUPPORTED -PNG_EXPORT(166, png_uint_32, png_get_tRNS, (png_const_structrp png_ptr, - png_inforp info_ptr, png_bytep *trans_alpha, int *num_trans, - png_color_16p *trans_color)); -#endif - -#ifdef PNG_tRNS_SUPPORTED -PNG_EXPORT(167, void, png_set_tRNS, (png_structrp png_ptr, - png_inforp info_ptr, png_const_bytep trans_alpha, int num_trans, - png_const_color_16p trans_color)); -#endif - -#ifdef PNG_sCAL_SUPPORTED -PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL, (png_const_structrp png_ptr, - png_const_inforp info_ptr, int *unit, double *width, double *height)) -#if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \ - defined(PNG_FLOATING_POINT_SUPPORTED) -/* NOTE: this API is currently implemented using floating point arithmetic, - * consequently it can only be used on systems with floating point support. - * In any case the range of values supported by png_fixed_point is small and it - * is highly recommended that png_get_sCAL_s be used instead. - */ -PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit, - png_fixed_point *width, png_fixed_point *height)) -#endif -PNG_EXPORT(169, png_uint_32, png_get_sCAL_s, - (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit, - png_charpp swidth, png_charpp sheight)); - -PNG_FP_EXPORT(170, void, png_set_sCAL, (png_const_structrp png_ptr, - png_inforp info_ptr, int unit, double width, double height)) -PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_const_structrp png_ptr, - png_inforp info_ptr, int unit, png_fixed_point width, - png_fixed_point height)) -PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr, - png_inforp info_ptr, int unit, - png_const_charp swidth, png_const_charp sheight)); -#endif /* sCAL */ - -#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED -/* Provide the default handling for all unknown chunks or, optionally, for - * specific unknown chunks. - * - * NOTE: prior to 1.6.0 the handling specified for particular chunks on read was - * ignored and the default was used, the per-chunk setting only had an effect on - * write. If you wish to have chunk-specific handling on read in code that must - * work on earlier versions you must use a user chunk callback to specify the - * desired handling (keep or discard.) - * - * The 'keep' parameter is a PNG_HANDLE_CHUNK_ value as listed below. The - * parameter is interpreted as follows: - * - * READ: - * PNG_HANDLE_CHUNK_AS_DEFAULT: - * Known chunks: do normal libpng processing, do not keep the chunk (but - * see the comments below about PNG_HANDLE_AS_UNKNOWN_SUPPORTED) - * Unknown chunks: for a specific chunk use the global default, when used - * as the default discard the chunk data. - * PNG_HANDLE_CHUNK_NEVER: - * Discard the chunk data. - * PNG_HANDLE_CHUNK_IF_SAFE: - * Keep the chunk data if the chunk is not critical else raise a chunk - * error. - * PNG_HANDLE_CHUNK_ALWAYS: - * Keep the chunk data. - * - * If the chunk data is saved it can be retrieved using png_get_unknown_chunks, - * below. Notice that specifying "AS_DEFAULT" as a global default is equivalent - * to specifying "NEVER", however when "AS_DEFAULT" is used for specific chunks - * it simply resets the behavior to the libpng default. - * - * INTERACTION WTIH USER CHUNK CALLBACKS: - * The per-chunk handling is always used when there is a png_user_chunk_ptr - * callback and the callback returns 0; the chunk is then always stored *unless* - * it is critical and the per-chunk setting is other than ALWAYS. Notice that - * the global default is *not* used in this case. (In effect the per-chunk - * value is incremented to at least IF_SAFE.) - * - * IMPORTANT NOTE: this behavior will change in libpng 1.7 - the global and - * per-chunk defaults will be honored. If you want to preserve the current - * behavior when your callback returns 0 you must set PNG_HANDLE_CHUNK_IF_SAFE - * as the default - if you don't do this libpng 1.6 will issue a warning. - * - * If you want unhandled unknown chunks to be discarded in libpng 1.6 and - * earlier simply return '1' (handled). - * - * PNG_HANDLE_AS_UNKNOWN_SUPPORTED: - * If this is *not* set known chunks will always be handled by libpng and - * will never be stored in the unknown chunk list. Known chunks listed to - * png_set_keep_unknown_chunks will have no effect. If it is set then known - * chunks listed with a keep other than AS_DEFAULT will *never* be processed - * by libpng, in addition critical chunks must either be processed by the - * callback or saved. - * - * The IHDR and IEND chunks must not be listed. Because this turns off the - * default handling for chunks that would otherwise be recognized the - * behavior of libpng transformations may well become incorrect! - * - * WRITE: - * When writing chunks the options only apply to the chunks specified by - * png_set_unknown_chunks (below), libpng will *always* write known chunks - * required by png_set_ calls and will always write the core critical chunks - * (as required for PLTE). - * - * Each chunk in the png_set_unknown_chunks list is looked up in the - * png_set_keep_unknown_chunks list to find the keep setting, this is then - * interpreted as follows: - * - * PNG_HANDLE_CHUNK_AS_DEFAULT: - * Write safe-to-copy chunks and write other chunks if the global - * default is set to _ALWAYS, otherwise don't write this chunk. - * PNG_HANDLE_CHUNK_NEVER: - * Do not write the chunk. - * PNG_HANDLE_CHUNK_IF_SAFE: - * Write the chunk if it is safe-to-copy, otherwise do not write it. - * PNG_HANDLE_CHUNK_ALWAYS: - * Write the chunk. - * - * Note that the default behavior is effectively the opposite of the read case - - * in read unknown chunks are not stored by default, in write they are written - * by default. Also the behavior of PNG_HANDLE_CHUNK_IF_SAFE is very different - * - on write the safe-to-copy bit is checked, on read the critical bit is - * checked and on read if the chunk is critical an error will be raised. - * - * num_chunks: - * =========== - * If num_chunks is positive, then the "keep" parameter specifies the manner - * for handling only those chunks appearing in the chunk_list array, - * otherwise the chunk list array is ignored. - * - * If num_chunks is 0 the "keep" parameter specifies the default behavior for - * unknown chunks, as described above. - * - * If num_chunks is negative, then the "keep" parameter specifies the manner - * for handling all unknown chunks plus all chunks recognized by libpng - * except for the IHDR, PLTE, tRNS, IDAT, and IEND chunks (which continue to - * be processed by libpng. - */ -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr, - int keep, png_const_bytep chunk_list, int num_chunks)); -#endif /* HANDLE_AS_UNKNOWN */ - -/* The "keep" PNG_HANDLE_CHUNK_ parameter for the specified chunk is returned; - * the result is therefore true (non-zero) if special handling is required, - * false for the default handling. - */ -PNG_EXPORT(173, int, png_handle_as_unknown, (png_const_structrp png_ptr, - png_const_bytep chunk_name)); -#endif /* SET_UNKNOWN_CHUNKS */ - -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED -PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr, - png_inforp info_ptr, png_const_unknown_chunkp unknowns, - int num_unknowns)); - /* NOTE: prior to 1.6.0 this routine set the 'location' field of the added - * unknowns to the location currently stored in the png_struct. This is - * invariably the wrong value on write. To fix this call the following API - * for each chunk in the list with the correct location. If you know your - * code won't be compiled on earlier versions you can rely on - * png_set_unknown_chunks(write-ptr, png_get_unknown_chunks(read-ptr)) doing - * the correct thing. - */ - -PNG_EXPORT(175, void, png_set_unknown_chunk_location, - (png_const_structrp png_ptr, png_inforp info_ptr, int chunk, int location)); - -PNG_EXPORT(176, int, png_get_unknown_chunks, (png_const_structrp png_ptr, - png_inforp info_ptr, png_unknown_chunkpp entries)); -#endif - -/* Png_free_data() will turn off the "valid" flag for anything it frees. - * If you need to turn it off for a chunk that your application has freed, - * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); - */ -PNG_EXPORT(177, void, png_set_invalid, (png_const_structrp png_ptr, - png_inforp info_ptr, int mask)); - -#ifdef PNG_INFO_IMAGE_SUPPORTED -/* The "params" pointer is currently not used and is for future expansion. */ -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -PNG_EXPORT(178, void, png_read_png, (png_structrp png_ptr, png_inforp info_ptr, - int transforms, png_voidp params)); -#endif -#ifdef PNG_WRITE_SUPPORTED -PNG_EXPORT(179, void, png_write_png, (png_structrp png_ptr, png_inforp info_ptr, - int transforms, png_voidp params)); -#endif -#endif - -PNG_EXPORT(180, png_const_charp, png_get_copyright, - (png_const_structrp png_ptr)); -PNG_EXPORT(181, png_const_charp, png_get_header_ver, - (png_const_structrp png_ptr)); -PNG_EXPORT(182, png_const_charp, png_get_header_version, - (png_const_structrp png_ptr)); -PNG_EXPORT(183, png_const_charp, png_get_libpng_ver, - (png_const_structrp png_ptr)); - -#ifdef PNG_MNG_FEATURES_SUPPORTED -PNG_EXPORT(184, png_uint_32, png_permit_mng_features, (png_structrp png_ptr, - png_uint_32 mng_features_permitted)); -#endif - -/* For use in png_set_keep_unknown, added to version 1.2.6 */ -#define PNG_HANDLE_CHUNK_AS_DEFAULT 0 -#define PNG_HANDLE_CHUNK_NEVER 1 -#define PNG_HANDLE_CHUNK_IF_SAFE 2 -#define PNG_HANDLE_CHUNK_ALWAYS 3 -#define PNG_HANDLE_CHUNK_LAST 4 - -/* Strip the prepended error numbers ("#nnn ") from error and warning - * messages before passing them to the error or warning handler. - */ -#ifdef PNG_ERROR_NUMBERS_SUPPORTED -PNG_EXPORT(185, void, png_set_strip_error_numbers, (png_structrp png_ptr, - png_uint_32 strip_mode)); -#endif - -/* Added in libpng-1.2.6 */ -#ifdef PNG_SET_USER_LIMITS_SUPPORTED -PNG_EXPORT(186, void, png_set_user_limits, (png_structrp png_ptr, - png_uint_32 user_width_max, png_uint_32 user_height_max)); -PNG_EXPORT(187, png_uint_32, png_get_user_width_max, - (png_const_structrp png_ptr)); -PNG_EXPORT(188, png_uint_32, png_get_user_height_max, - (png_const_structrp png_ptr)); -/* Added in libpng-1.4.0 */ -PNG_EXPORT(189, void, png_set_chunk_cache_max, (png_structrp png_ptr, - png_uint_32 user_chunk_cache_max)); -PNG_EXPORT(190, png_uint_32, png_get_chunk_cache_max, - (png_const_structrp png_ptr)); -/* Added in libpng-1.4.1 */ -PNG_EXPORT(191, void, png_set_chunk_malloc_max, (png_structrp png_ptr, - png_alloc_size_t user_chunk_cache_max)); -PNG_EXPORT(192, png_alloc_size_t, png_get_chunk_malloc_max, - (png_const_structrp png_ptr)); -#endif - -#if defined(PNG_INCH_CONVERSIONS_SUPPORTED) -PNG_EXPORT(193, png_uint_32, png_get_pixels_per_inch, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); - -PNG_EXPORT(194, png_uint_32, png_get_x_pixels_per_inch, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); - -PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch, - (png_const_structrp png_ptr, png_const_inforp info_ptr)); - -PNG_FP_EXPORT(196, float, png_get_x_offset_inches, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) -#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */ -PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) -#endif - -PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structrp png_ptr, - png_const_inforp info_ptr)) -#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */ -PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed, - (png_const_structrp png_ptr, png_const_inforp info_ptr)) -#endif - -# ifdef PNG_pHYs_SUPPORTED -PNG_EXPORT(198, png_uint_32, png_get_pHYs_dpi, (png_const_structrp png_ptr, - png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, - int *unit_type)); -# endif /* pHYs */ -#endif /* INCH_CONVERSIONS */ - -/* Added in libpng-1.4.0 */ -#ifdef PNG_IO_STATE_SUPPORTED -PNG_EXPORT(199, png_uint_32, png_get_io_state, (png_const_structrp png_ptr)); - -/* Removed from libpng 1.6; use png_get_io_chunk_type. */ -PNG_REMOVED(200, png_const_bytep, png_get_io_chunk_name, (png_structrp png_ptr), - PNG_DEPRECATED) - -PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type, - (png_const_structrp png_ptr)); - -/* The flags returned by png_get_io_state() are the following: */ -# define PNG_IO_NONE 0x0000 /* no I/O at this moment */ -# define PNG_IO_READING 0x0001 /* currently reading */ -# define PNG_IO_WRITING 0x0002 /* currently writing */ -# define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */ -# define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */ -# define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */ -# define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */ -# define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */ -# define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */ -#endif /* IO_STATE */ - -/* Interlace support. The following macros are always defined so that if - * libpng interlace handling is turned off the macros may be used to handle - * interlaced images within the application. - */ -#define PNG_INTERLACE_ADAM7_PASSES 7 - -/* Two macros to return the first row and first column of the original, - * full, image which appears in a given pass. 'pass' is in the range 0 - * to 6 and the result is in the range 0 to 7. - */ -#define PNG_PASS_START_ROW(pass) (((1&~(pass))<<(3-((pass)>>1)))&7) -#define PNG_PASS_START_COL(pass) (((1& (pass))<<(3-(((pass)+1)>>1)))&7) - -/* A macro to return the offset between pixels in the output row for a pair of - * pixels in the input - effectively the inverse of the 'COL_SHIFT' macro that - * follows. Note that ROW_OFFSET is the offset from one row to the next whereas - * COL_OFFSET is from one column to the next, within a row. - */ -#define PNG_PASS_ROW_OFFSET(pass) ((pass)>2?(8>>(((pass)-1)>>1)):8) -#define PNG_PASS_COL_OFFSET(pass) (1<<((7-(pass))>>1)) - -/* Two macros to help evaluate the number of rows or columns in each - * pass. This is expressed as a shift - effectively log2 of the number or - * rows or columns in each 8x8 tile of the original image. - */ -#define PNG_PASS_ROW_SHIFT(pass) ((pass)>2?(8-(pass))>>1:3) -#define PNG_PASS_COL_SHIFT(pass) ((pass)>1?(7-(pass))>>1:3) - -/* Hence two macros to determine the number of rows or columns in a given - * pass of an image given its height or width. In fact these macros may - * return non-zero even though the sub-image is empty, because the other - * dimension may be empty for a small image. - */ -#define PNG_PASS_ROWS(height, pass) (((height)+(((1<>PNG_PASS_ROW_SHIFT(pass)) -#define PNG_PASS_COLS(width, pass) (((width)+(((1<>PNG_PASS_COL_SHIFT(pass)) - -/* For the reader row callbacks (both progressive and sequential) it is - * necessary to find the row in the output image given a row in an interlaced - * image, so two more macros: - */ -#define PNG_ROW_FROM_PASS_ROW(y_in, pass) \ - (((y_in)<>(((7-(off))-(pass))<<2)) & 0xF) | \ - ((0x01145AF0>>(((7-(off))-(pass))<<2)) & 0xF0)) - -#define PNG_ROW_IN_INTERLACE_PASS(y, pass) \ - ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1) -#define PNG_COL_IN_INTERLACE_PASS(x, pass) \ - ((PNG_PASS_MASK(pass,1) >> ((x)&7)) & 1) - -#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED -/* With these routines we avoid an integer divide, which will be slower on - * most machines. However, it does take more operations than the corresponding - * divide method, so it may be slower on a few RISC systems. There are two - * shifts (by 8 or 16 bits) and an addition, versus a single integer divide. - * - * Note that the rounding factors are NOT supposed to be the same! 128 and - * 32768 are correct for the NODIV code; 127 and 32767 are correct for the - * standard method. - * - * [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ] - */ - - /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */ - -# define png_composite(composite, fg, alpha, bg) \ - { \ - png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \ - * (png_uint_16)(alpha) \ - + (png_uint_16)(bg)*(png_uint_16)(255 \ - - (png_uint_16)(alpha)) + 128); \ - (composite) = (png_byte)(((temp + (temp >> 8)) >> 8) & 0xff); \ - } - -# define png_composite_16(composite, fg, alpha, bg) \ - { \ - png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \ - * (png_uint_32)(alpha) \ - + (png_uint_32)(bg)*(65535 \ - - (png_uint_32)(alpha)) + 32768); \ - (composite) = (png_uint_16)(0xffff & ((temp + (temp >> 16)) >> 16)); \ - } - -#else /* Standard method using integer division */ - -# define png_composite(composite, fg, alpha, bg) \ - (composite) = \ - (png_byte)(0xff & (((png_uint_16)(fg) * (png_uint_16)(alpha) + \ - (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \ - 127) / 255)) - -# define png_composite_16(composite, fg, alpha, bg) \ - (composite) = \ - (png_uint_16)(0xffff & (((png_uint_32)(fg) * (png_uint_32)(alpha) + \ - (png_uint_32)(bg)*(png_uint_32)(65535 - (png_uint_32)(alpha)) + \ - 32767) / 65535)) -#endif /* READ_COMPOSITE_NODIV */ - -#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED -PNG_EXPORT(201, png_uint_32, png_get_uint_32, (png_const_bytep buf)); -PNG_EXPORT(202, png_uint_16, png_get_uint_16, (png_const_bytep buf)); -PNG_EXPORT(203, png_int_32, png_get_int_32, (png_const_bytep buf)); -#endif - -PNG_EXPORT(204, png_uint_32, png_get_uint_31, (png_const_structrp png_ptr, - png_const_bytep buf)); -/* No png_get_int_16 -- may be added if there's a real need for it. */ - -/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */ -#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED -PNG_EXPORT(205, void, png_save_uint_32, (png_bytep buf, png_uint_32 i)); -#endif -#ifdef PNG_SAVE_INT_32_SUPPORTED -PNG_EXPORT(206, void, png_save_int_32, (png_bytep buf, png_int_32 i)); -#endif - -/* Place a 16-bit number into a buffer in PNG byte order. - * The parameter is declared unsigned int, not png_uint_16, - * just to avoid potential problems on pre-ANSI C compilers. - */ -#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED -PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i)); -/* No png_save_int_16 -- may be added if there's a real need for it. */ -#endif - -#ifdef PNG_USE_READ_MACROS -/* Inline macros to do direct reads of bytes from the input buffer. - * The png_get_int_32() routine assumes we are using two's complement - * format for negative values, which is almost certainly true. - */ -# define PNG_get_uint_32(buf) \ - (((png_uint_32)(*(buf)) << 24) + \ - ((png_uint_32)(*((buf) + 1)) << 16) + \ - ((png_uint_32)(*((buf) + 2)) << 8) + \ - ((png_uint_32)(*((buf) + 3)))) - - /* From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the - * function) incorrectly returned a value of type png_uint_32. - */ -# define PNG_get_uint_16(buf) \ - ((png_uint_16) \ - (((unsigned int)(*(buf)) << 8) + \ - ((unsigned int)(*((buf) + 1))))) - -# define PNG_get_int_32(buf) \ - ((png_int_32)((*(buf) & 0x80) \ - ? -((png_int_32)(((png_get_uint_32(buf)^0xffffffffU)+1U)&0x7fffffffU)) \ - : (png_int_32)png_get_uint_32(buf))) - -/* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h, - * but defining a macro name prefixed with PNG_PREFIX. - */ -# ifndef PNG_PREFIX -# define png_get_uint_32(buf) PNG_get_uint_32(buf) -# define png_get_uint_16(buf) PNG_get_uint_16(buf) -# define png_get_int_32(buf) PNG_get_int_32(buf) -# endif -#else -# ifdef PNG_PREFIX - /* No macros; revert to the (redefined) function */ -# define PNG_get_uint_32 (png_get_uint_32) -# define PNG_get_uint_16 (png_get_uint_16) -# define PNG_get_int_32 (png_get_int_32) -# endif -#endif - -#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED -PNG_EXPORT(242, void, png_set_check_for_invalid_index, - (png_structrp png_ptr, int allowed)); -# ifdef PNG_GET_PALETTE_MAX_SUPPORTED -PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr, - png_const_infop info_ptr)); -# endif -#endif /* CHECK_FOR_INVALID_INDEX */ - -/******************************************************************************* - * Section 5: SIMPLIFIED API - ******************************************************************************* - * - * Please read the documentation in libpng-manual.txt (TODO: write said - * documentation) if you don't understand what follows. - * - * The simplified API hides the details of both libpng and the PNG file format - * itself. It allows PNG files to be read into a very limited number of - * in-memory bitmap formats or to be written from the same formats. If these - * formats do not accomodate your needs then you can, and should, use the more - * sophisticated APIs above - these support a wide variety of in-memory formats - * and a wide variety of sophisticated transformations to those formats as well - * as a wide variety of APIs to manipulate ancillary information. - * - * To read a PNG file using the simplified API: - * - * 1) Declare a 'png_image' structure (see below) on the stack, set the - * version field to PNG_IMAGE_VERSION and the 'opaque' pointer to NULL - * (this is REQUIRED, your program may crash if you don't do it.) - * 2) Call the appropriate png_image_begin_read... function. - * 3) Set the png_image 'format' member to the required sample format. - * 4) Allocate a buffer for the image and, if required, the color-map. - * 5) Call png_image_finish_read to read the image and, if required, the - * color-map into your buffers. - * - * There are no restrictions on the format of the PNG input itself; all valid - * color types, bit depths, and interlace methods are acceptable, and the - * input image is transformed as necessary to the requested in-memory format - * during the png_image_finish_read() step. The only caveat is that if you - * request a color-mapped image from a PNG that is full-color or makes - * complex use of an alpha channel the transformation is extremely lossy and the - * result may look terrible. - * - * To write a PNG file using the simplified API: - * - * 1) Declare a 'png_image' structure on the stack and memset() it to all zero. - * 2) Initialize the members of the structure that describe the image, setting - * the 'format' member to the format of the image samples. - * 3) Call the appropriate png_image_write... function with a pointer to the - * image and, if necessary, the color-map to write the PNG data. - * - * png_image is a structure that describes the in-memory format of an image - * when it is being read or defines the in-memory format of an image that you - * need to write: - */ -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) || \ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) - -#define PNG_IMAGE_VERSION 1 - -typedef struct png_control *png_controlp; -typedef struct -{ - png_controlp opaque; /* Initialize to NULL, free with png_image_free */ - png_uint_32 version; /* Set to PNG_IMAGE_VERSION */ - png_uint_32 width; /* Image width in pixels (columns) */ - png_uint_32 height; /* Image height in pixels (rows) */ - png_uint_32 format; /* Image format as defined below */ - png_uint_32 flags; /* A bit mask containing informational flags */ - png_uint_32 colormap_entries; - /* Number of entries in the color-map */ - - /* In the event of an error or warning the following field will be set to a - * non-zero value and the 'message' field will contain a '\0' terminated - * string with the libpng error or warning message. If both warnings and - * an error were encountered, only the error is recorded. If there - * are multiple warnings, only the first one is recorded. - * - * The upper 30 bits of this value are reserved, the low two bits contain - * a value as follows: - */ -# define PNG_IMAGE_WARNING 1 -# define PNG_IMAGE_ERROR 2 - /* - * The result is a two-bit code such that a value more than 1 indicates - * a failure in the API just called: - * - * 0 - no warning or error - * 1 - warning - * 2 - error - * 3 - error preceded by warning - */ -# define PNG_IMAGE_FAILED(png_cntrl) ((((png_cntrl).warning_or_error)&0x03)>1) - - png_uint_32 warning_or_error; - - char message[64]; -} png_image, *png_imagep; - -/* The samples of the image have one to four channels whose components have - * original values in the range 0 to 1.0: - * - * 1: A single gray or luminance channel (G). - * 2: A gray/luminance channel and an alpha channel (GA). - * 3: Three red, green, blue color channels (RGB). - * 4: Three color channels and an alpha channel (RGBA). - * - * The components are encoded in one of two ways: - * - * a) As a small integer, value 0..255, contained in a single byte. For the - * alpha channel the original value is simply value/255. For the color or - * luminance channels the value is encoded according to the sRGB specification - * and matches the 8-bit format expected by typical display devices. - * - * The color/gray channels are not scaled (pre-multiplied) by the alpha - * channel and are suitable for passing to color management software. - * - * b) As a value in the range 0..65535, contained in a 2-byte integer. All - * channels can be converted to the original value by dividing by 65535; all - * channels are linear. Color channels use the RGB encoding (RGB end-points) of - * the sRGB specification. This encoding is identified by the - * PNG_FORMAT_FLAG_LINEAR flag below. - * - * When the simplified API needs to convert between sRGB and linear colorspaces, - * the actual sRGB transfer curve defined in the sRGB specification (see the - * article at https://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2 - * approximation used elsewhere in libpng. - * - * When an alpha channel is present it is expected to denote pixel coverage - * of the color or luminance channels and is returned as an associated alpha - * channel: the color/gray channels are scaled (pre-multiplied) by the alpha - * value. - * - * The samples are either contained directly in the image data, between 1 and 8 - * bytes per pixel according to the encoding, or are held in a color-map indexed - * by bytes in the image data. In the case of a color-map the color-map entries - * are individual samples, encoded as above, and the image data has one byte per - * pixel to select the relevant sample from the color-map. - */ - -/* PNG_FORMAT_* - * - * #defines to be used in png_image::format. Each #define identifies a - * particular layout of sample data and, if present, alpha values. There are - * separate defines for each of the two component encodings. - * - * A format is built up using single bit flag values. All combinations are - * valid. Formats can be built up from the flag values or you can use one of - * the predefined values below. When testing formats always use the FORMAT_FLAG - * macros to test for individual features - future versions of the library may - * add new flags. - * - * When reading or writing color-mapped images the format should be set to the - * format of the entries in the color-map then png_image_{read,write}_colormap - * called to read or write the color-map and set the format correctly for the - * image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly! - * - * NOTE: libpng can be built with particular features disabled. If you see - * compiler errors because the definition of one of the following flags has been - * compiled out it is because libpng does not have the required support. It is - * possible, however, for the libpng configuration to enable the format on just - * read or just write; in that case you may see an error at run time. You can - * guard against this by checking for the definition of the appropriate - * "_SUPPORTED" macro, one of: - * - * PNG_SIMPLIFIED_{READ,WRITE}_{BGR,AFIRST}_SUPPORTED - */ -#define PNG_FORMAT_FLAG_ALPHA 0x01U /* format with an alpha channel */ -#define PNG_FORMAT_FLAG_COLOR 0x02U /* color format: otherwise grayscale */ -#define PNG_FORMAT_FLAG_LINEAR 0x04U /* 2-byte channels else 1-byte */ -#define PNG_FORMAT_FLAG_COLORMAP 0x08U /* image data is color-mapped */ - -#ifdef PNG_FORMAT_BGR_SUPPORTED -# define PNG_FORMAT_FLAG_BGR 0x10U /* BGR colors, else order is RGB */ -#endif - -#ifdef PNG_FORMAT_AFIRST_SUPPORTED -# define PNG_FORMAT_FLAG_AFIRST 0x20U /* alpha channel comes first */ -#endif - -#define PNG_FORMAT_FLAG_ASSOCIATED_ALPHA 0x40U /* alpha channel is associated */ - -/* Commonly used formats have predefined macros. - * - * First the single byte (sRGB) formats: - */ -#define PNG_FORMAT_GRAY 0 -#define PNG_FORMAT_GA PNG_FORMAT_FLAG_ALPHA -#define PNG_FORMAT_AG (PNG_FORMAT_GA|PNG_FORMAT_FLAG_AFIRST) -#define PNG_FORMAT_RGB PNG_FORMAT_FLAG_COLOR -#define PNG_FORMAT_BGR (PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_BGR) -#define PNG_FORMAT_RGBA (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_ALPHA) -#define PNG_FORMAT_ARGB (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_AFIRST) -#define PNG_FORMAT_BGRA (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_ALPHA) -#define PNG_FORMAT_ABGR (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_AFIRST) - -/* Then the linear 2-byte formats. When naming these "Y" is used to - * indicate a luminance (gray) channel. - */ -#define PNG_FORMAT_LINEAR_Y PNG_FORMAT_FLAG_LINEAR -#define PNG_FORMAT_LINEAR_Y_ALPHA (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_ALPHA) -#define PNG_FORMAT_LINEAR_RGB (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR) -#define PNG_FORMAT_LINEAR_RGB_ALPHA \ - (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_ALPHA) - -/* With color-mapped formats the image data is one byte for each pixel, the byte - * is an index into the color-map which is formatted as above. To obtain a - * color-mapped format it is sufficient just to add the PNG_FOMAT_FLAG_COLORMAP - * to one of the above definitions, or you can use one of the definitions below. - */ -#define PNG_FORMAT_RGB_COLORMAP (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_COLORMAP) -#define PNG_FORMAT_BGR_COLORMAP (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_COLORMAP) -#define PNG_FORMAT_RGBA_COLORMAP (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_COLORMAP) -#define PNG_FORMAT_ARGB_COLORMAP (PNG_FORMAT_ARGB|PNG_FORMAT_FLAG_COLORMAP) -#define PNG_FORMAT_BGRA_COLORMAP (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_COLORMAP) -#define PNG_FORMAT_ABGR_COLORMAP (PNG_FORMAT_ABGR|PNG_FORMAT_FLAG_COLORMAP) - -/* PNG_IMAGE macros - * - * These are convenience macros to derive information from a png_image - * structure. The PNG_IMAGE_SAMPLE_ macros return values appropriate to the - * actual image sample values - either the entries in the color-map or the - * pixels in the image. The PNG_IMAGE_PIXEL_ macros return corresponding values - * for the pixels and will always return 1 for color-mapped formats. The - * remaining macros return information about the rows in the image and the - * complete image. - * - * NOTE: All the macros that take a png_image::format parameter are compile time - * constants if the format parameter is, itself, a constant. Therefore these - * macros can be used in array declarations and case labels where required. - * Similarly the macros are also pre-processor constants (sizeof is not used) so - * they can be used in #if tests. - * - * First the information about the samples. - */ -#define PNG_IMAGE_SAMPLE_CHANNELS(fmt)\ - (((fmt)&(PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_ALPHA))+1) - /* Return the total number of channels in a given format: 1..4 */ - -#define PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt)\ - ((((fmt) & PNG_FORMAT_FLAG_LINEAR) >> 2)+1) - /* Return the size in bytes of a single component of a pixel or color-map - * entry (as appropriate) in the image: 1 or 2. - */ - -#define PNG_IMAGE_SAMPLE_SIZE(fmt)\ - (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt)) - /* This is the size of the sample data for one sample. If the image is - * color-mapped it is the size of one color-map entry (and image pixels are - * one byte in size), otherwise it is the size of one image pixel. - */ - -#define PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(fmt)\ - (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * 256) - /* The maximum size of the color-map required by the format expressed in a - * count of components. This can be used to compile-time allocate a - * color-map: - * - * png_uint_16 colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(linear_fmt)]; - * - * png_byte colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(sRGB_fmt)]; - * - * Alternatively use the PNG_IMAGE_COLORMAP_SIZE macro below to use the - * information from one of the png_image_begin_read_ APIs and dynamically - * allocate the required memory. - */ - -/* Corresponding information about the pixels */ -#define PNG_IMAGE_PIXEL_(test,fmt)\ - (((fmt)&PNG_FORMAT_FLAG_COLORMAP)?1:test(fmt)) - -#define PNG_IMAGE_PIXEL_CHANNELS(fmt)\ - PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_CHANNELS,fmt) - /* The number of separate channels (components) in a pixel; 1 for a - * color-mapped image. - */ - -#define PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)\ - PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_COMPONENT_SIZE,fmt) - /* The size, in bytes, of each component in a pixel; 1 for a color-mapped - * image. - */ - -#define PNG_IMAGE_PIXEL_SIZE(fmt) PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_SIZE,fmt) - /* The size, in bytes, of a complete pixel; 1 for a color-mapped image. */ - -/* Information about the whole row, or whole image */ -#define PNG_IMAGE_ROW_STRIDE(image)\ - (PNG_IMAGE_PIXEL_CHANNELS((image).format) * (image).width) - /* Return the total number of components in a single row of the image; this - * is the minimum 'row stride', the minimum count of components between each - * row. For a color-mapped image this is the minimum number of bytes in a - * row. - * - * WARNING: this macro overflows for some images with more than one component - * and very large image widths. libpng will refuse to process an image where - * this macro would overflow. - */ - -#define PNG_IMAGE_BUFFER_SIZE(image, row_stride)\ - (PNG_IMAGE_PIXEL_COMPONENT_SIZE((image).format)*(image).height*(row_stride)) - /* Return the size, in bytes, of an image buffer given a png_image and a row - * stride - the number of components to leave space for in each row. - * - * WARNING: this macro overflows a 32-bit integer for some large PNG images, - * libpng will refuse to process an image where such an overflow would occur. - */ - -#define PNG_IMAGE_SIZE(image)\ - PNG_IMAGE_BUFFER_SIZE(image, PNG_IMAGE_ROW_STRIDE(image)) - /* Return the size, in bytes, of the image in memory given just a png_image; - * the row stride is the minimum stride required for the image. - */ - -#define PNG_IMAGE_COLORMAP_SIZE(image)\ - (PNG_IMAGE_SAMPLE_SIZE((image).format) * (image).colormap_entries) - /* Return the size, in bytes, of the color-map of this image. If the image - * format is not a color-map format this will return a size sufficient for - * 256 entries in the given format; check PNG_FORMAT_FLAG_COLORMAP if - * you don't want to allocate a color-map in this case. - */ - -/* PNG_IMAGE_FLAG_* - * - * Flags containing additional information about the image are held in the - * 'flags' field of png_image. - */ -#define PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB 0x01 - /* This indicates the the RGB values of the in-memory bitmap do not - * correspond to the red, green and blue end-points defined by sRGB. - */ - -#define PNG_IMAGE_FLAG_FAST 0x02 - /* On write emphasise speed over compression; the resultant PNG file will be - * larger but will be produced significantly faster, particular for large - * images. Do not use this option for images which will be distributed, only - * used it when producing intermediate files that will be read back in - * repeatedly. For a typical 24-bit image the option will double the read - * speed at the cost of increasing the image size by 25%, however for many - * more compressible images the PNG file can be 10 times larger with only a - * slight speed gain. - */ - -#define PNG_IMAGE_FLAG_16BIT_sRGB 0x04 - /* On read if the image is a 16-bit per component image and there is no gAMA - * or sRGB chunk assume that the components are sRGB encoded. Notice that - * images output by the simplified API always have gamma information; setting - * this flag only affects the interpretation of 16-bit images from an - * external source. It is recommended that the application expose this flag - * to the user; the user can normally easily recognize the difference between - * linear and sRGB encoding. This flag has no effect on write - the data - * passed to the write APIs must have the correct encoding (as defined - * above.) - * - * If the flag is not set (the default) input 16-bit per component data is - * assumed to be linear. - * - * NOTE: the flag can only be set after the png_image_begin_read_ call, - * because that call initializes the 'flags' field. - */ - -#ifdef PNG_SIMPLIFIED_READ_SUPPORTED -/* READ APIs - * --------- - * - * The png_image passed to the read APIs must have been initialized by setting - * the png_controlp field 'opaque' to NULL (or, safer, memset the whole thing.) - */ -#ifdef PNG_STDIO_SUPPORTED -PNG_EXPORT(234, int, png_image_begin_read_from_file, (png_imagep image, - const char *file_name)); - /* The named file is opened for read and the image header is filled in - * from the PNG header in the file. - */ - -PNG_EXPORT(235, int, png_image_begin_read_from_stdio, (png_imagep image, - FILE* file)); - /* The PNG header is read from the stdio FILE object. */ -#endif /* STDIO */ - -PNG_EXPORT(236, int, png_image_begin_read_from_memory, (png_imagep image, - png_const_voidp memory, png_size_t size)); - /* The PNG header is read from the given memory buffer. */ - -PNG_EXPORT(237, int, png_image_finish_read, (png_imagep image, - png_const_colorp background, void *buffer, png_int_32 row_stride, - void *colormap)); - /* Finish reading the image into the supplied buffer and clean up the - * png_image structure. - * - * row_stride is the step, in byte or 2-byte units as appropriate, - * between adjacent rows. A positive stride indicates that the top-most row - * is first in the buffer - the normal top-down arrangement. A negative - * stride indicates that the bottom-most row is first in the buffer. - * - * background need only be supplied if an alpha channel must be removed from - * a png_byte format and the removal is to be done by compositing on a solid - * color; otherwise it may be NULL and any composition will be done directly - * onto the buffer. The value is an sRGB color to use for the background, - * for grayscale output the green channel is used. - * - * background must be supplied when an alpha channel must be removed from a - * single byte color-mapped output format, in other words if: - * - * 1) The original format from png_image_begin_read_from_* had - * PNG_FORMAT_FLAG_ALPHA set. - * 2) The format set by the application does not. - * 3) The format set by the application has PNG_FORMAT_FLAG_COLORMAP set and - * PNG_FORMAT_FLAG_LINEAR *not* set. - * - * For linear output removing the alpha channel is always done by compositing - * on black and background is ignored. - * - * colormap must be supplied when PNG_FORMAT_FLAG_COLORMAP is set. It must - * be at least the size (in bytes) returned by PNG_IMAGE_COLORMAP_SIZE. - * image->colormap_entries will be updated to the actual number of entries - * written to the colormap; this may be less than the original value. - */ - -PNG_EXPORT(238, void, png_image_free, (png_imagep image)); - /* Free any data allocated by libpng in image->opaque, setting the pointer to - * NULL. May be called at any time after the structure is initialized. - */ -#endif /* SIMPLIFIED_READ */ - -#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED -/* WRITE APIS - * ---------- - * For write you must initialize a png_image structure to describe the image to - * be written. To do this use memset to set the whole structure to 0 then - * initialize fields describing your image. - * - * version: must be set to PNG_IMAGE_VERSION - * opaque: must be initialized to NULL - * width: image width in pixels - * height: image height in rows - * format: the format of the data (image and color-map) you wish to write - * flags: set to 0 unless one of the defined flags applies; set - * PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB for color format images where the RGB - * values do not correspond to the colors in sRGB. - * colormap_entries: set to the number of entries in the color-map (0 to 256) - */ -#ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED -PNG_EXPORT(239, int, png_image_write_to_file, (png_imagep image, - const char *file, int convert_to_8bit, const void *buffer, - png_int_32 row_stride, const void *colormap)); - /* Write the image to the named file. */ - -PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file, - int convert_to_8_bit, const void *buffer, png_int_32 row_stride, - const void *colormap)); - /* Write the image to the given (FILE*). */ -#endif /* SIMPLIFIED_WRITE_STDIO */ - -/* With all write APIs if image is in one of the linear formats with 16-bit - * data then setting convert_to_8_bit will cause the output to be an 8-bit PNG - * gamma encoded according to the sRGB specification, otherwise a 16-bit linear - * encoded PNG file is written. - * - * With color-mapped data formats the colormap parameter point to a color-map - * with at least image->colormap_entries encoded in the specified format. If - * the format is linear the written PNG color-map will be converted to sRGB - * regardless of the convert_to_8_bit flag. - * - * With all APIs row_stride is handled as in the read APIs - it is the spacing - * from one row to the next in component sized units (1 or 2 bytes) and if - * negative indicates a bottom-up row layout in the buffer. If row_stride is - * zero, libpng will calculate it for you from the image width and number of - * channels. - * - * Note that the write API does not support interlacing, sub-8-bit pixels or - * most ancillary chunks. If you need to write text chunks (e.g. for copyright - * notices) you need to use one of the other APIs. - */ - -PNG_EXPORT(245, int, png_image_write_to_memory, (png_imagep image, void *memory, - png_alloc_size_t * PNG_RESTRICT memory_bytes, int convert_to_8_bit, - const void *buffer, png_int_32 row_stride, const void *colormap)); - /* Write the image to the given memory buffer. The function both writes the - * whole PNG data stream to *memory and updates *memory_bytes with the count - * of bytes written. - * - * 'memory' may be NULL. In this case *memory_bytes is not read however on - * success the number of bytes which would have been written will still be - * stored in *memory_bytes. On failure *memory_bytes will contain 0. - * - * If 'memory' is not NULL it must point to memory[*memory_bytes] of - * writeable memory. - * - * If the function returns success memory[*memory_bytes] (if 'memory' is not - * NULL) contains the written PNG data. *memory_bytes will always be less - * than or equal to the original value. - * - * If the function returns false and *memory_bytes was not changed an error - * occured during write. If *memory_bytes was changed, or is not 0 if - * 'memory' was NULL, the write would have succeeded but for the memory - * buffer being too small. *memory_bytes contains the required number of - * bytes and will be bigger that the original value. - */ - -#define png_image_write_get_memory_size(image, size, convert_to_8_bit, buffer,\ - row_stride, colormap)\ - png_image_write_to_memory(&(image), 0, &(size), convert_to_8_bit, buffer,\ - row_stride, colormap) - /* Return the amount of memory in 'size' required to compress this image. - * The png_image structure 'image' must be filled in as in the above - * function and must not be changed before the actual write call, the buffer - * and all other parameters must also be identical to that in the final - * write call. The 'size' variable need not be initialized. - * - * NOTE: the macro returns true/false, if false is returned 'size' will be - * set to zero and the write failed and probably will fail if tried again. - */ - -/* You can pre-allocate the buffer by making sure it is of sufficient size - * regardless of the amount of compression achieved. The buffer size will - * always be bigger than the original image and it will never be filled. The - * following macros are provided to assist in allocating the buffer. - */ -#define PNG_IMAGE_DATA_SIZE(image) (PNG_IMAGE_SIZE(image)+(image).height) - /* The number of uncompressed bytes in the PNG byte encoding of the image; - * uncompressing the PNG IDAT data will give this number of bytes. - * - * NOTE: while PNG_IMAGE_SIZE cannot overflow for an image in memory this - * macro can because of the extra bytes used in the PNG byte encoding. You - * need to avoid this macro if your image size approaches 2^30 in width or - * height. The same goes for the remainder of these macros; they all produce - * bigger numbers than the actual in-memory image size. - */ -#ifndef PNG_ZLIB_MAX_SIZE -# define PNG_ZLIB_MAX_SIZE(b) ((b)+(((b)+7U)>>3)+(((b)+63U)>>6)+11U) - /* An upper bound on the number of compressed bytes given 'b' uncompressed - * bytes. This is based on deflateBounds() in zlib; different - * implementations of zlib compression may conceivably produce more data so - * if your zlib implementation is not zlib itself redefine this macro - * appropriately. - */ -#endif - -#define PNG_IMAGE_COMPRESSED_SIZE_MAX(image)\ - PNG_ZLIB_MAX_SIZE((png_alloc_size_t)PNG_IMAGE_DATA_SIZE(image)) - /* An upper bound on the size of the data in the PNG IDAT chunks. */ - -#define PNG_IMAGE_PNG_SIZE_MAX_(image, image_size)\ - ((8U/*sig*/+25U/*IHDR*/+16U/*gAMA*/+44U/*cHRM*/+12U/*IEND*/+\ - (((image).format&PNG_FORMAT_FLAG_COLORMAP)?/*colormap: PLTE, tRNS*/\ - 12U+3U*(image).colormap_entries/*PLTE data*/+\ - (((image).format&PNG_FORMAT_FLAG_ALPHA)?\ - 12U/*tRNS*/+(image).colormap_entries:0U):0U)+\ - 12U)+(12U*((image_size)/PNG_ZBUF_SIZE))/*IDAT*/+(image_size)) - /* A helper for the following macro; if your compiler cannot handle the - * following macro use this one with the result of - * PNG_IMAGE_COMPRESSED_SIZE_MAX(image) as the second argument (most - * compilers should handle this just fine.) - */ - -#define PNG_IMAGE_PNG_SIZE_MAX(image)\ - PNG_IMAGE_PNG_SIZE_MAX_(image, PNG_IMAGE_COMPRESSED_SIZE_MAX(image)) - /* An upper bound on the total length of the PNG data stream for 'image'. - * The result is of type png_alloc_size_t, on 32-bit systems this may - * overflow even though PNG_IMAGE_DATA_SIZE does not overflow; the write will - * run out of buffer space but return a corrected size which should work. - */ -#endif /* SIMPLIFIED_WRITE */ -/******************************************************************************* - * END OF SIMPLIFIED API - ******************************************************************************/ -#endif /* SIMPLIFIED_{READ|WRITE} */ - -/******************************************************************************* - * Section 6: IMPLEMENTATION OPTIONS - ******************************************************************************* - * - * Support for arbitrary implementation-specific optimizations. The API allows - * particular options to be turned on or off. 'Option' is the number of the - * option and 'onoff' is 0 (off) or non-0 (on). The value returned is given - * by the PNG_OPTION_ defines below. - * - * HARDWARE: normally hardware capabilites, such as the Intel SSE instructions, - * are detected at run time, however sometimes it may be impossible - * to do this in user mode, in which case it is necessary to discover - * the capabilities in an OS specific way. Such capabilities are - * listed here when libpng has support for them and must be turned - * ON by the application if present. - * - * SOFTWARE: sometimes software optimizations actually result in performance - * decrease on some architectures or systems, or with some sets of - * PNG images. 'Software' options allow such optimizations to be - * selected at run time. - */ -#ifdef PNG_SET_OPTION_SUPPORTED -#ifdef PNG_ARM_NEON_API_SUPPORTED -# define PNG_ARM_NEON 0 /* HARDWARE: ARM Neon SIMD instructions supported */ -#endif -#define PNG_MAXIMUM_INFLATE_WINDOW 2 /* SOFTWARE: force maximum window */ -#define PNG_SKIP_sRGB_CHECK_PROFILE 4 /* SOFTWARE: Check ICC profile for sRGB */ -#ifdef PNG_MIPS_MSA_API_SUPPORTED -# define PNG_MIPS_MSA 6 /* HARDWARE: MIPS Msa SIMD instructions supported */ -#endif -#define PNG_IGNORE_ADLER32 8 -#ifdef PNG_POWERPC_VSX_API_SUPPORTED -# define PNG_POWERPC_VSX 10 /* HARDWARE: PowerPC VSX SIMD instructions supported */ -#endif -#define PNG_OPTION_NEXT 12 /* Next option - numbers must be even */ - -/* Return values: NOTE: there are four values and 'off' is *not* zero */ -#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */ -#define PNG_OPTION_INVALID 1 /* Option number out of range */ -#define PNG_OPTION_OFF 2 -#define PNG_OPTION_ON 3 - -PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option, - int onoff)); -#endif /* SET_OPTION */ - -/******************************************************************************* - * END OF HARDWARE AND SOFTWARE OPTIONS - ******************************************************************************/ - -/* Maintainer: Put new public prototypes here ^, in libpng.3, in project - * defs, and in scripts/symbols.def. - */ - -/* The last ordinal number (this is the *last* one already used; the next - * one to use is one more than this.) - */ -#ifdef PNG_EXPORT_LAST_ORDINAL - PNG_EXPORT_LAST_ORDINAL(249); -#endif - -#ifdef __cplusplus -} -#endif - -#endif /* PNG_VERSION_INFO_ONLY */ -/* Do not put anything past this line */ -#endif /* PNG_H */ diff --git a/project/jni/png/include/pngconf.h b/project/jni/png/include/pngconf.h deleted file mode 100644 index d13b13e57..000000000 --- a/project/jni/png/include/pngconf.h +++ /dev/null @@ -1,622 +0,0 @@ - -/* pngconf.h - machine configurable file for libpng - * - * libpng version 1.6.34, September 29, 2017 - * - * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * Any machine specific code is near the front of this file, so if you - * are configuring libpng for a machine, you may want to read the section - * starting here down to where it starts to typedef png_color, png_text, - * and png_info. - */ - -#ifndef PNGCONF_H -#define PNGCONF_H - -#ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */ - -/* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C - * compiler for correct compilation. The following header files are required by - * the standard. If your compiler doesn't provide these header files, or they - * do not match the standard, you will need to provide/improve them. - */ -#include -#include - -/* Library header files. These header files are all defined by ISOC90; libpng - * expects conformant implementations, however, an ISOC90 conformant system need - * not provide these header files if the functionality cannot be implemented. - * In this case it will be necessary to disable the relevant parts of libpng in - * the build of pnglibconf.h. - * - * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not - * include this unnecessary header file. - */ - -#ifdef PNG_STDIO_SUPPORTED - /* Required for the definition of FILE: */ -# include -#endif - -#ifdef PNG_SETJMP_SUPPORTED - /* Required for the definition of jmp_buf and the declaration of longjmp: */ -# include -#endif - -#ifdef PNG_CONVERT_tIME_SUPPORTED - /* Required for struct tm: */ -# include -#endif - -#endif /* PNG_BUILDING_SYMBOL_TABLE */ - -/* Prior to 1.6.0 it was possible to turn off 'const' in declarations using - * PNG_NO_CONST; this is no longer supported except for data declarations which - * apparently still cause problems in 2011 on some compilers. - */ -#define PNG_CONST const /* backward compatibility only */ - -/* This controls optimization of the reading of 16-bit and 32-bit values - * from PNG files. It can be set on a per-app-file basis - it - * just changes whether a macro is used when the function is called. - * The library builder sets the default; if read functions are not - * built into the library the macro implementation is forced on. - */ -#ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED -# define PNG_USE_READ_MACROS -#endif -#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS) -# if PNG_DEFAULT_READ_MACROS -# define PNG_USE_READ_MACROS -# endif -#endif - -/* COMPILER SPECIFIC OPTIONS. - * - * These options are provided so that a variety of difficult compilers - * can be used. Some are fixed at build time (e.g. PNG_API_RULE - * below) but still have compiler specific implementations, others - * may be changed on a per-file basis when compiling against libpng. - */ - -/* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect - * against legacy (pre ISOC90) compilers that did not understand function - * prototypes. It is not required for modern C compilers. - */ -#ifndef PNGARG -# define PNGARG(arglist) arglist -#endif - -/* Function calling conventions. - * ============================= - * Normally it is not necessary to specify to the compiler how to call - * a function - it just does it - however on x86 systems derived from - * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems - * and some others) there are multiple ways to call a function and the - * default can be changed on the compiler command line. For this reason - * libpng specifies the calling convention of every exported function and - * every function called via a user supplied function pointer. This is - * done in this file by defining the following macros: - * - * PNGAPI Calling convention for exported functions. - * PNGCBAPI Calling convention for user provided (callback) functions. - * PNGCAPI Calling convention used by the ANSI-C library (required - * for longjmp callbacks and sometimes used internally to - * specify the calling convention for zlib). - * - * These macros should never be overridden. If it is necessary to - * change calling convention in a private build this can be done - * by setting PNG_API_RULE (which defaults to 0) to one of the values - * below to select the correct 'API' variants. - * - * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout. - * This is correct in every known environment. - * PNG_API_RULE=1 Use the operating system convention for PNGAPI and - * the 'C' calling convention (from PNGCAPI) for - * callbacks (PNGCBAPI). This is no longer required - * in any known environment - if it has to be used - * please post an explanation of the problem to the - * libpng mailing list. - * - * These cases only differ if the operating system does not use the C - * calling convention, at present this just means the above cases - * (x86 DOS/Windows sytems) and, even then, this does not apply to - * Cygwin running on those systems. - * - * Note that the value must be defined in pnglibconf.h so that what - * the application uses to call the library matches the conventions - * set when building the library. - */ - -/* Symbol export - * ============= - * When building a shared library it is almost always necessary to tell - * the compiler which symbols to export. The png.h macro 'PNG_EXPORT' - * is used to mark the symbols. On some systems these symbols can be - * extracted at link time and need no special processing by the compiler, - * on other systems the symbols are flagged by the compiler and just - * the declaration requires a special tag applied (unfortunately) in a - * compiler dependent way. Some systems can do either. - * - * A small number of older systems also require a symbol from a DLL to - * be flagged to the program that calls it. This is a problem because - * we do not know in the header file included by application code that - * the symbol will come from a shared library, as opposed to a statically - * linked one. For this reason the application must tell us by setting - * the magic flag PNG_USE_DLL to turn on the special processing before - * it includes png.h. - * - * Four additional macros are used to make this happen: - * - * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from - * the build or imported if PNG_USE_DLL is set - compiler - * and system specific. - * - * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to - * 'type', compiler specific. - * - * PNG_DLL_EXPORT Set to the magic to use during a libpng build to - * make a symbol exported from the DLL. Not used in the - * public header files; see pngpriv.h for how it is used - * in the libpng build. - * - * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come - * from a DLL - used to define PNG_IMPEXP when - * PNG_USE_DLL is set. - */ - -/* System specific discovery. - * ========================== - * This code is used at build time to find PNG_IMPEXP, the API settings - * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL - * import processing is possible. On Windows systems it also sets - * compiler-specific macros to the values required to change the calling - * conventions of the various functions. - */ -#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\ - defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) - /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or - * MinGW on any architecture currently supported by Windows. Also includes - * Watcom builds but these need special treatment because they are not - * compatible with GCC or Visual C because of different calling conventions. - */ -# if PNG_API_RULE == 2 - /* If this line results in an error, either because __watcall is not - * understood or because of a redefine just below you cannot use *this* - * build of the library with the compiler you are using. *This* build was - * build using Watcom and applications must also be built using Watcom! - */ -# define PNGCAPI __watcall -# endif - -# if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800)) -# define PNGCAPI __cdecl -# if PNG_API_RULE == 1 - /* If this line results in an error __stdcall is not understood and - * PNG_API_RULE should not have been set to '1'. - */ -# define PNGAPI __stdcall -# endif -# else - /* An older compiler, or one not detected (erroneously) above, - * if necessary override on the command line to get the correct - * variants for the compiler. - */ -# ifndef PNGCAPI -# define PNGCAPI _cdecl -# endif -# if PNG_API_RULE == 1 && !defined(PNGAPI) -# define PNGAPI _stdcall -# endif -# endif /* compiler/api */ - - /* NOTE: PNGCBAPI always defaults to PNGCAPI. */ - -# if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD) -# error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed" -# endif - -# if (defined(_MSC_VER) && _MSC_VER < 800) ||\ - (defined(__BORLANDC__) && __BORLANDC__ < 0x500) - /* older Borland and MSC - * compilers used '__export' and required this to be after - * the type. - */ -# ifndef PNG_EXPORT_TYPE -# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP -# endif -# define PNG_DLL_EXPORT __export -# else /* newer compiler */ -# define PNG_DLL_EXPORT __declspec(dllexport) -# ifndef PNG_DLL_IMPORT -# define PNG_DLL_IMPORT __declspec(dllimport) -# endif -# endif /* compiler */ - -#else /* !Windows */ -# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) -# define PNGAPI _System -# else /* !Windows/x86 && !OS/2 */ - /* Use the defaults, or define PNG*API on the command line (but - * this will have to be done for every compile!) - */ -# endif /* other system, !OS/2 */ -#endif /* !Windows/x86 */ - -/* Now do all the defaulting . */ -#ifndef PNGCAPI -# define PNGCAPI -#endif -#ifndef PNGCBAPI -# define PNGCBAPI PNGCAPI -#endif -#ifndef PNGAPI -# define PNGAPI PNGCAPI -#endif - -/* PNG_IMPEXP may be set on the compilation system command line or (if not set) - * then in an internal header file when building the library, otherwise (when - * using the library) it is set here. - */ -#ifndef PNG_IMPEXP -# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT) - /* This forces use of a DLL, disallowing static linking */ -# define PNG_IMPEXP PNG_DLL_IMPORT -# endif - -# ifndef PNG_IMPEXP -# define PNG_IMPEXP -# endif -#endif - -/* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat - * 'attributes' as a storage class - the attributes go at the start of the - * function definition, and attributes are always appended regardless of the - * compiler. This considerably simplifies these macros but may cause problems - * if any compilers both need function attributes and fail to handle them as - * a storage class (this is unlikely.) - */ -#ifndef PNG_FUNCTION -# define PNG_FUNCTION(type, name, args, attributes) attributes type name args -#endif - -#ifndef PNG_EXPORT_TYPE -# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type -#endif - - /* The ordinal value is only relevant when preprocessing png.h for symbol - * table entries, so we discard it here. See the .dfn files in the - * scripts directory. - */ - -#ifndef PNG_EXPORTA -# define PNG_EXPORTA(ordinal, type, name, args, attributes) \ - PNG_FUNCTION(PNG_EXPORT_TYPE(type), (PNGAPI name), PNGARG(args), \ - PNG_LINKAGE_API attributes) -#endif - -/* ANSI-C (C90) does not permit a macro to be invoked with an empty argument, - * so make something non-empty to satisfy the requirement: - */ -#define PNG_EMPTY /*empty list*/ - -#define PNG_EXPORT(ordinal, type, name, args) \ - PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY) - -/* Use PNG_REMOVED to comment out a removed interface. */ -#ifndef PNG_REMOVED -# define PNG_REMOVED(ordinal, type, name, args, attributes) -#endif - -#ifndef PNG_CALLBACK -# define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args) -#endif - -/* Support for compiler specific function attributes. These are used - * so that where compiler support is available incorrect use of API - * functions in png.h will generate compiler warnings. - * - * Added at libpng-1.2.41. - */ - -#ifndef PNG_NO_PEDANTIC_WARNINGS -# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED -# define PNG_PEDANTIC_WARNINGS_SUPPORTED -# endif -#endif - -#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED - /* Support for compiler specific function attributes. These are used - * so that where compiler support is available, incorrect use of API - * functions in png.h will generate compiler warnings. Added at libpng - * version 1.2.41. Disabling these removes the warnings but may also produce - * less efficient code. - */ -# if defined(__clang__) && defined(__has_attribute) - /* Clang defines both __clang__ and __GNUC__. Check __clang__ first. */ -# if !defined(PNG_USE_RESULT) && __has_attribute(__warn_unused_result__) -# define PNG_USE_RESULT __attribute__((__warn_unused_result__)) -# endif -# if !defined(PNG_NORETURN) && __has_attribute(__noreturn__) -# define PNG_NORETURN __attribute__((__noreturn__)) -# endif -# if !defined(PNG_ALLOCATED) && __has_attribute(__malloc__) -# define PNG_ALLOCATED __attribute__((__malloc__)) -# endif -# if !defined(PNG_DEPRECATED) && __has_attribute(__deprecated__) -# define PNG_DEPRECATED __attribute__((__deprecated__)) -# endif -# if !defined(PNG_PRIVATE) -# ifdef __has_extension -# if __has_extension(attribute_unavailable_with_message) -# define PNG_PRIVATE __attribute__((__unavailable__(\ - "This function is not exported by libpng."))) -# endif -# endif -# endif -# ifndef PNG_RESTRICT -# define PNG_RESTRICT __restrict -# endif - -# elif defined(__GNUC__) -# ifndef PNG_USE_RESULT -# define PNG_USE_RESULT __attribute__((__warn_unused_result__)) -# endif -# ifndef PNG_NORETURN -# define PNG_NORETURN __attribute__((__noreturn__)) -# endif -# if __GNUC__ >= 3 -# ifndef PNG_ALLOCATED -# define PNG_ALLOCATED __attribute__((__malloc__)) -# endif -# ifndef PNG_DEPRECATED -# define PNG_DEPRECATED __attribute__((__deprecated__)) -# endif -# ifndef PNG_PRIVATE -# if 0 /* Doesn't work so we use deprecated instead*/ -# define PNG_PRIVATE \ - __attribute__((warning("This function is not exported by libpng."))) -# else -# define PNG_PRIVATE \ - __attribute__((__deprecated__)) -# endif -# endif -# if ((__GNUC__ > 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1)) -# ifndef PNG_RESTRICT -# define PNG_RESTRICT __restrict -# endif -# endif /* __GNUC__.__GNUC_MINOR__ > 3.0 */ -# endif /* __GNUC__ >= 3 */ - -# elif defined(_MSC_VER) && (_MSC_VER >= 1300) -# ifndef PNG_USE_RESULT -# define PNG_USE_RESULT /* not supported */ -# endif -# ifndef PNG_NORETURN -# define PNG_NORETURN __declspec(noreturn) -# endif -# ifndef PNG_ALLOCATED -# if (_MSC_VER >= 1400) -# define PNG_ALLOCATED __declspec(restrict) -# endif -# endif -# ifndef PNG_DEPRECATED -# define PNG_DEPRECATED __declspec(deprecated) -# endif -# ifndef PNG_PRIVATE -# define PNG_PRIVATE __declspec(deprecated) -# endif -# ifndef PNG_RESTRICT -# if (_MSC_VER >= 1400) -# define PNG_RESTRICT __restrict -# endif -# endif - -# elif defined(__WATCOMC__) -# ifndef PNG_RESTRICT -# define PNG_RESTRICT __restrict -# endif -# endif -#endif /* PNG_PEDANTIC_WARNINGS */ - -#ifndef PNG_DEPRECATED -# define PNG_DEPRECATED /* Use of this function is deprecated */ -#endif -#ifndef PNG_USE_RESULT -# define PNG_USE_RESULT /* The result of this function must be checked */ -#endif -#ifndef PNG_NORETURN -# define PNG_NORETURN /* This function does not return */ -#endif -#ifndef PNG_ALLOCATED -# define PNG_ALLOCATED /* The result of the function is new memory */ -#endif -#ifndef PNG_PRIVATE -# define PNG_PRIVATE /* This is a private libpng function */ -#endif -#ifndef PNG_RESTRICT -# define PNG_RESTRICT /* The C99 "restrict" feature */ -#endif - -#ifndef PNG_FP_EXPORT /* A floating point API. */ -# ifdef PNG_FLOATING_POINT_SUPPORTED -# define PNG_FP_EXPORT(ordinal, type, name, args)\ - PNG_EXPORT(ordinal, type, name, args); -# else /* No floating point APIs */ -# define PNG_FP_EXPORT(ordinal, type, name, args) -# endif -#endif -#ifndef PNG_FIXED_EXPORT /* A fixed point API. */ -# ifdef PNG_FIXED_POINT_SUPPORTED -# define PNG_FIXED_EXPORT(ordinal, type, name, args)\ - PNG_EXPORT(ordinal, type, name, args); -# else /* No fixed point APIs */ -# define PNG_FIXED_EXPORT(ordinal, type, name, args) -# endif -#endif - -#ifndef PNG_BUILDING_SYMBOL_TABLE -/* Some typedefs to get us started. These should be safe on most of the common - * platforms. - * - * png_uint_32 and png_int_32 may, currently, be larger than required to hold a - * 32-bit value however this is not normally advisable. - * - * png_uint_16 and png_int_16 should always be two bytes in size - this is - * verified at library build time. - * - * png_byte must always be one byte in size. - * - * The checks below use constants from limits.h, as defined by the ISOC90 - * standard. - */ -#if CHAR_BIT == 8 && UCHAR_MAX == 255 - typedef unsigned char png_byte; -#else -# error "libpng requires 8-bit bytes" -#endif - -#if INT_MIN == -32768 && INT_MAX == 32767 - typedef int png_int_16; -#elif SHRT_MIN == -32768 && SHRT_MAX == 32767 - typedef short png_int_16; -#else -# error "libpng requires a signed 16-bit type" -#endif - -#if UINT_MAX == 65535 - typedef unsigned int png_uint_16; -#elif USHRT_MAX == 65535 - typedef unsigned short png_uint_16; -#else -# error "libpng requires an unsigned 16-bit type" -#endif - -#if INT_MIN < -2147483646 && INT_MAX > 2147483646 - typedef int png_int_32; -#elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646 - typedef long int png_int_32; -#else -# error "libpng requires a signed 32-bit (or more) type" -#endif - -#if UINT_MAX > 4294967294U - typedef unsigned int png_uint_32; -#elif ULONG_MAX > 4294967294U - typedef unsigned long int png_uint_32; -#else -# error "libpng requires an unsigned 32-bit (or more) type" -#endif - -/* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however, - * requires an ISOC90 compiler and relies on consistent behavior of sizeof. - */ -typedef size_t png_size_t; -typedef ptrdiff_t png_ptrdiff_t; - -/* libpng needs to know the maximum value of 'size_t' and this controls the - * definition of png_alloc_size_t, below. This maximum value of size_t limits - * but does not control the maximum allocations the library makes - there is - * direct application control of this through png_set_user_limits(). - */ -#ifndef PNG_SMALL_SIZE_T - /* Compiler specific tests for systems where size_t is known to be less than - * 32 bits (some of these systems may no longer work because of the lack of - * 'far' support; see above.) - */ -# if (defined(__TURBOC__) && !defined(__FLAT__)) ||\ - (defined(_MSC_VER) && defined(MAXSEG_64K)) -# define PNG_SMALL_SIZE_T -# endif -#endif - -/* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no - * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to - * png_alloc_size_t are not necessary; in fact, it is recommended not to use - * them at all so that the compiler can complain when something turns out to be - * problematic. - * - * Casts in the other direction (from png_alloc_size_t to png_size_t or - * png_uint_32) should be explicitly applied; however, we do not expect to - * encounter practical situations that require such conversions. - * - * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than - * 4294967295 - i.e. less than the maximum value of png_uint_32. - */ -#ifdef PNG_SMALL_SIZE_T - typedef png_uint_32 png_alloc_size_t; -#else - typedef png_size_t png_alloc_size_t; -#endif - -/* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler - * implementations of Intel CPU specific support of user-mode segmented address - * spaces, where 16-bit pointers address more than 65536 bytes of memory using - * separate 'segment' registers. The implementation requires two different - * types of pointer (only one of which includes the segment value.) - * - * If required this support is available in version 1.2 of libpng and may be - * available in versions through 1.5, although the correctness of the code has - * not been verified recently. - */ - -/* Typedef for floating-point numbers that are converted to fixed-point with a - * multiple of 100,000, e.g., gamma - */ -typedef png_int_32 png_fixed_point; - -/* Add typedefs for pointers */ -typedef void * png_voidp; -typedef const void * png_const_voidp; -typedef png_byte * png_bytep; -typedef const png_byte * png_const_bytep; -typedef png_uint_32 * png_uint_32p; -typedef const png_uint_32 * png_const_uint_32p; -typedef png_int_32 * png_int_32p; -typedef const png_int_32 * png_const_int_32p; -typedef png_uint_16 * png_uint_16p; -typedef const png_uint_16 * png_const_uint_16p; -typedef png_int_16 * png_int_16p; -typedef const png_int_16 * png_const_int_16p; -typedef char * png_charp; -typedef const char * png_const_charp; -typedef png_fixed_point * png_fixed_point_p; -typedef const png_fixed_point * png_const_fixed_point_p; -typedef png_size_t * png_size_tp; -typedef const png_size_t * png_const_size_tp; - -#ifdef PNG_STDIO_SUPPORTED -typedef FILE * png_FILE_p; -#endif - -#ifdef PNG_FLOATING_POINT_SUPPORTED -typedef double * png_doublep; -typedef const double * png_const_doublep; -#endif - -/* Pointers to pointers; i.e. arrays */ -typedef png_byte * * png_bytepp; -typedef png_uint_32 * * png_uint_32pp; -typedef png_int_32 * * png_int_32pp; -typedef png_uint_16 * * png_uint_16pp; -typedef png_int_16 * * png_int_16pp; -typedef const char * * png_const_charpp; -typedef char * * png_charpp; -typedef png_fixed_point * * png_fixed_point_pp; -#ifdef PNG_FLOATING_POINT_SUPPORTED -typedef double * * png_doublepp; -#endif - -/* Pointers to pointers to pointers; i.e., pointer to array */ -typedef char * * * png_charppp; - -#endif /* PNG_BUILDING_SYMBOL_TABLE */ - -#endif /* PNGCONF_H */ diff --git a/project/jni/png/include/pnglibconf.h b/project/jni/png/include/pnglibconf.h deleted file mode 100644 index 32e60aa14..000000000 --- a/project/jni/png/include/pnglibconf.h +++ /dev/null @@ -1,220 +0,0 @@ -/* libpng 1.6.34 STANDARD API DEFINITION */ - -/* pnglibconf.h - library build configuration */ - -/* Libpng version 1.6.34 - September 29, 2017 */ - -/* Copyright (c) 1998-2017 Glenn Randers-Pehrson */ - -/* This code is released under the libpng license. */ -/* For conditions of distribution and use, see the disclaimer */ -/* and license in png.h */ - -/* pnglibconf.h */ -/* Machine generated file: DO NOT EDIT */ -/* Derived from: scripts/pnglibconf.dfa */ -#ifndef PNGLCONF_H -#define PNGLCONF_H -/* options */ -#define PNG_16BIT_SUPPORTED -#define PNG_ALIGNED_MEMORY_SUPPORTED -/*#undef PNG_ARM_NEON_API_SUPPORTED*/ -/*#undef PNG_ARM_NEON_CHECK_SUPPORTED*/ -/*#undef PNG_POWERPC_VSX_API_SUPPORTED*/ -/*#undef PNG_POWERPC_VSX_CHECK_SUPPORTED*/ -#define PNG_BENIGN_ERRORS_SUPPORTED -#define PNG_BENIGN_READ_ERRORS_SUPPORTED -/*#undef PNG_BENIGN_WRITE_ERRORS_SUPPORTED*/ -#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED -#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED -#define PNG_COLORSPACE_SUPPORTED -#define PNG_CONSOLE_IO_SUPPORTED -#define PNG_CONVERT_tIME_SUPPORTED -#define PNG_EASY_ACCESS_SUPPORTED -/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/ -#define PNG_ERROR_TEXT_SUPPORTED -#define PNG_FIXED_POINT_SUPPORTED -#define PNG_FLOATING_ARITHMETIC_SUPPORTED -#define PNG_FLOATING_POINT_SUPPORTED -#define PNG_FORMAT_AFIRST_SUPPORTED -#define PNG_FORMAT_BGR_SUPPORTED -#define PNG_GAMMA_SUPPORTED -#define PNG_GET_PALETTE_MAX_SUPPORTED -#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED -#define PNG_INCH_CONVERSIONS_SUPPORTED -#define PNG_INFO_IMAGE_SUPPORTED -#define PNG_IO_STATE_SUPPORTED -#define PNG_MNG_FEATURES_SUPPORTED -#define PNG_POINTER_INDEXING_SUPPORTED -#define PNG_PROGRESSIVE_READ_SUPPORTED -#define PNG_READ_16BIT_SUPPORTED -#define PNG_READ_ALPHA_MODE_SUPPORTED -#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED -#define PNG_READ_BACKGROUND_SUPPORTED -#define PNG_READ_BGR_SUPPORTED -#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED -#define PNG_READ_COMPOSITE_NODIV_SUPPORTED -#define PNG_READ_COMPRESSED_TEXT_SUPPORTED -#define PNG_READ_EXPAND_16_SUPPORTED -#define PNG_READ_EXPAND_SUPPORTED -#define PNG_READ_FILLER_SUPPORTED -#define PNG_READ_GAMMA_SUPPORTED -#define PNG_READ_GET_PALETTE_MAX_SUPPORTED -#define PNG_READ_GRAY_TO_RGB_SUPPORTED -#define PNG_READ_INTERLACING_SUPPORTED -#define PNG_READ_INT_FUNCTIONS_SUPPORTED -#define PNG_READ_INVERT_ALPHA_SUPPORTED -#define PNG_READ_INVERT_SUPPORTED -/*#undef PNG_READ_OPT_PLTE_SUPPORTED*/ -#define PNG_READ_PACKSWAP_SUPPORTED -#define PNG_READ_PACK_SUPPORTED -#define PNG_READ_QUANTIZE_SUPPORTED -#define PNG_READ_RGB_TO_GRAY_SUPPORTED -#define PNG_READ_SCALE_16_TO_8_SUPPORTED -#define PNG_READ_SHIFT_SUPPORTED -#define PNG_READ_STRIP_16_TO_8_SUPPORTED -#define PNG_READ_STRIP_ALPHA_SUPPORTED -#define PNG_READ_SUPPORTED -#define PNG_READ_SWAP_ALPHA_SUPPORTED -#define PNG_READ_SWAP_SUPPORTED -#define PNG_READ_TEXT_SUPPORTED -#define PNG_READ_TRANSFORMS_SUPPORTED -#define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED -#define PNG_READ_USER_CHUNKS_SUPPORTED -#define PNG_READ_USER_TRANSFORM_SUPPORTED -#define PNG_READ_bKGD_SUPPORTED -#define PNG_READ_cHRM_SUPPORTED -#define PNG_READ_eXIf_SUPPORTED -#define PNG_READ_gAMA_SUPPORTED -#define PNG_READ_hIST_SUPPORTED -#define PNG_READ_iCCP_SUPPORTED -#define PNG_READ_iTXt_SUPPORTED -#define PNG_READ_oFFs_SUPPORTED -#define PNG_READ_pCAL_SUPPORTED -#define PNG_READ_pHYs_SUPPORTED -#define PNG_READ_sBIT_SUPPORTED -#define PNG_READ_sCAL_SUPPORTED -#define PNG_READ_sPLT_SUPPORTED -#define PNG_READ_sRGB_SUPPORTED -#define PNG_READ_tEXt_SUPPORTED -#define PNG_READ_tIME_SUPPORTED -#define PNG_READ_tRNS_SUPPORTED -#define PNG_READ_zTXt_SUPPORTED -#define PNG_SAVE_INT_32_SUPPORTED -#define PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED -#define PNG_SEQUENTIAL_READ_SUPPORTED -#define PNG_SETJMP_SUPPORTED -#define PNG_SET_OPTION_SUPPORTED -#define PNG_SET_UNKNOWN_CHUNKS_SUPPORTED -#define PNG_SET_USER_LIMITS_SUPPORTED -#define PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED -#define PNG_SIMPLIFIED_READ_BGR_SUPPORTED -#define PNG_SIMPLIFIED_READ_SUPPORTED -#define PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED -#define PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED -#define PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED -#define PNG_SIMPLIFIED_WRITE_SUPPORTED -#define PNG_STDIO_SUPPORTED -#define PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED -#define PNG_TEXT_SUPPORTED -#define PNG_TIME_RFC1123_SUPPORTED -#define PNG_UNKNOWN_CHUNKS_SUPPORTED -#define PNG_USER_CHUNKS_SUPPORTED -#define PNG_USER_LIMITS_SUPPORTED -#define PNG_USER_MEM_SUPPORTED -#define PNG_USER_TRANSFORM_INFO_SUPPORTED -#define PNG_USER_TRANSFORM_PTR_SUPPORTED -/*#undef PNG_WARNINGS_SUPPORTED*/ -#define PNG_WRITE_16BIT_SUPPORTED -#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED -#define PNG_WRITE_BGR_SUPPORTED -#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED -#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED -#define PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED -#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED -#define PNG_WRITE_FILLER_SUPPORTED -#define PNG_WRITE_FILTER_SUPPORTED -#define PNG_WRITE_FLUSH_SUPPORTED -#define PNG_WRITE_GET_PALETTE_MAX_SUPPORTED -#define PNG_WRITE_INTERLACING_SUPPORTED -#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED -#define PNG_WRITE_INVERT_ALPHA_SUPPORTED -#define PNG_WRITE_INVERT_SUPPORTED -#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED -#define PNG_WRITE_PACKSWAP_SUPPORTED -#define PNG_WRITE_PACK_SUPPORTED -#define PNG_WRITE_SHIFT_SUPPORTED -#define PNG_WRITE_SUPPORTED -#define PNG_WRITE_SWAP_ALPHA_SUPPORTED -#define PNG_WRITE_SWAP_SUPPORTED -#define PNG_WRITE_TEXT_SUPPORTED -#define PNG_WRITE_TRANSFORMS_SUPPORTED -#define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED -#define PNG_WRITE_USER_TRANSFORM_SUPPORTED -#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED -#define PNG_WRITE_bKGD_SUPPORTED -#define PNG_WRITE_cHRM_SUPPORTED -#define PNG_WRITE_eXIf_SUPPORTED -#define PNG_WRITE_gAMA_SUPPORTED -#define PNG_WRITE_hIST_SUPPORTED -#define PNG_WRITE_iCCP_SUPPORTED -#define PNG_WRITE_iTXt_SUPPORTED -#define PNG_WRITE_oFFs_SUPPORTED -#define PNG_WRITE_pCAL_SUPPORTED -#define PNG_WRITE_pHYs_SUPPORTED -#define PNG_WRITE_sBIT_SUPPORTED -#define PNG_WRITE_sCAL_SUPPORTED -#define PNG_WRITE_sPLT_SUPPORTED -#define PNG_WRITE_sRGB_SUPPORTED -#define PNG_WRITE_tEXt_SUPPORTED -#define PNG_WRITE_tIME_SUPPORTED -#define PNG_WRITE_tRNS_SUPPORTED -#define PNG_WRITE_zTXt_SUPPORTED -#define PNG_bKGD_SUPPORTED -#define PNG_cHRM_SUPPORTED -#define PNG_eXIf_SUPPORTED -#define PNG_gAMA_SUPPORTED -#define PNG_hIST_SUPPORTED -#define PNG_iCCP_SUPPORTED -#define PNG_iTXt_SUPPORTED -#define PNG_oFFs_SUPPORTED -#define PNG_pCAL_SUPPORTED -#define PNG_pHYs_SUPPORTED -#define PNG_sBIT_SUPPORTED -#define PNG_sCAL_SUPPORTED -#define PNG_sPLT_SUPPORTED -#define PNG_sRGB_SUPPORTED -#define PNG_tEXt_SUPPORTED -#define PNG_tIME_SUPPORTED -#define PNG_tRNS_SUPPORTED -#define PNG_zTXt_SUPPORTED -/* end of options */ -/* settings */ -#define PNG_API_RULE 0 -#define PNG_DEFAULT_READ_MACROS 1 -#define PNG_GAMMA_THRESHOLD_FIXED 5000 -#define PNG_IDAT_READ_SIZE PNG_ZBUF_SIZE -#define PNG_INFLATE_BUF_SIZE 1024 -#define PNG_LINKAGE_API extern -#define PNG_LINKAGE_CALLBACK extern -#define PNG_LINKAGE_DATA extern -#define PNG_LINKAGE_FUNCTION extern -#define PNG_MAX_GAMMA_8 11 -#define PNG_QUANTIZE_BLUE_BITS 5 -#define PNG_QUANTIZE_GREEN_BITS 5 -#define PNG_QUANTIZE_RED_BITS 5 -#define PNG_TEXT_Z_DEFAULT_COMPRESSION (-1) -#define PNG_TEXT_Z_DEFAULT_STRATEGY 0 -#define PNG_USER_CHUNK_CACHE_MAX 1000 -#define PNG_USER_CHUNK_MALLOC_MAX 8000000 -#define PNG_USER_HEIGHT_MAX 1000000 -#define PNG_USER_WIDTH_MAX 1000000 -#define PNG_ZBUF_SIZE 8192 -#define PNG_ZLIB_VERNUM 0 /* unknown */ -#define PNG_Z_DEFAULT_COMPRESSION (-1) -#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0 -#define PNG_Z_DEFAULT_STRATEGY 1 -#define PNG_sCAL_PRECISION 5 -#define PNG_sRGB_PROFILE_CHECKS 2 -/* end of settings */ -#endif /* PNGLCONF_H */ diff --git a/project/jni/png/png.c b/project/jni/png/png.c deleted file mode 100644 index ff02c5651..000000000 --- a/project/jni/png/png.c +++ /dev/null @@ -1,4614 +0,0 @@ - -/* png.c - location for general purpose libpng functions - * - * Last changed in libpng 1.6.33 [September 28, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#include "pngpriv.h" - -/* Generate a compiler error if there is an old png.h in the search path. */ -typedef png_libpng_version_1_6_34 Your_png_h_is_not_version_1_6_34; - -#ifdef __GNUC__ -/* The version tests may need to be added to, but the problem warning has - * consistently been fixed in GCC versions which obtain wide-spread release. - * The problem is that many versions of GCC rearrange comparison expressions in - * the optimizer in such a way that the results of the comparison will change - * if signed integer overflow occurs. Such comparisons are not permitted in - * ANSI C90, however GCC isn't clever enough to work out that that do not occur - * below in png_ascii_from_fp and png_muldiv, so it produces a warning with - * -Wextra. Unfortunately this is highly dependent on the optimizer and the - * machine architecture so the warning comes and goes unpredictably and is - * impossible to "fix", even were that a good idea. - */ -#if __GNUC__ == 7 && __GNUC_MINOR__ == 1 -#define GCC_STRICT_OVERFLOW 1 -#endif /* GNU 7.1.x */ -#endif /* GNU */ -#ifndef GCC_STRICT_OVERFLOW -#define GCC_STRICT_OVERFLOW 0 -#endif - -/* Tells libpng that we have already handled the first "num_bytes" bytes - * of the PNG file signature. If the PNG data is embedded into another - * stream we can set num_bytes = 8 so that libpng will not attempt to read - * or write any of the magic bytes before it starts on the IHDR. - */ - -#ifdef PNG_READ_SUPPORTED -void PNGAPI -png_set_sig_bytes(png_structrp png_ptr, int num_bytes) -{ - unsigned int nb = (unsigned int)num_bytes; - - png_debug(1, "in png_set_sig_bytes"); - - if (png_ptr == NULL) - return; - - if (num_bytes < 0) - nb = 0; - - if (nb > 8) - png_error(png_ptr, "Too many bytes for PNG signature"); - - png_ptr->sig_bytes = (png_byte)nb; -} - -/* Checks whether the supplied bytes match the PNG signature. We allow - * checking less than the full 8-byte signature so that those apps that - * already read the first few bytes of a file to determine the file type - * can simply check the remaining bytes for extra assurance. Returns - * an integer less than, equal to, or greater than zero if sig is found, - * respectively, to be less than, to match, or be greater than the correct - * PNG signature (this is the same behavior as strcmp, memcmp, etc). - */ -int PNGAPI -png_sig_cmp(png_const_bytep sig, png_size_t start, png_size_t num_to_check) -{ - png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; - - if (num_to_check > 8) - num_to_check = 8; - - else if (num_to_check < 1) - return (-1); - - if (start > 7) - return (-1); - - if (start + num_to_check > 8) - num_to_check = 8 - start; - - return ((int)(memcmp(&sig[start], &png_signature[start], num_to_check))); -} - -#endif /* READ */ - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -/* Function to allocate memory for zlib */ -PNG_FUNCTION(voidpf /* PRIVATE */, -png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED) -{ - png_alloc_size_t num_bytes = size; - - if (png_ptr == NULL) - return NULL; - - if (items >= (~(png_alloc_size_t)0)/size) - { - png_warning (png_voidcast(png_structrp, png_ptr), - "Potential overflow in png_zalloc()"); - return NULL; - } - - num_bytes *= items; - return png_malloc_warn(png_voidcast(png_structrp, png_ptr), num_bytes); -} - -/* Function to free memory for zlib */ -void /* PRIVATE */ -png_zfree(voidpf png_ptr, voidpf ptr) -{ - png_free(png_voidcast(png_const_structrp,png_ptr), ptr); -} - -/* Reset the CRC variable to 32 bits of 1's. Care must be taken - * in case CRC is > 32 bits to leave the top bits 0. - */ -void /* PRIVATE */ -png_reset_crc(png_structrp png_ptr) -{ - /* The cast is safe because the crc is a 32-bit value. */ - png_ptr->crc = (png_uint_32)crc32(0, Z_NULL, 0); -} - -/* Calculate the CRC over a section of data. We can only pass as - * much data to this routine as the largest single buffer size. We - * also check that this data will actually be used before going to the - * trouble of calculating it. - */ -void /* PRIVATE */ -png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length) -{ - int need_crc = 1; - - if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0) - { - if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == - (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN)) - need_crc = 0; - } - - else /* critical */ - { - if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0) - need_crc = 0; - } - - /* 'uLong' is defined in zlib.h as unsigned long; this means that on some - * systems it is a 64-bit value. crc32, however, returns 32 bits so the - * following cast is safe. 'uInt' may be no more than 16 bits, so it is - * necessary to perform a loop here. - */ - if (need_crc != 0 && length > 0) - { - uLong crc = png_ptr->crc; /* Should never issue a warning */ - - do - { - uInt safe_length = (uInt)length; -#ifndef __COVERITY__ - if (safe_length == 0) - safe_length = (uInt)-1; /* evil, but safe */ -#endif - - crc = crc32(crc, ptr, safe_length); - - /* The following should never issue compiler warnings; if they do the - * target system has characteristics that will probably violate other - * assumptions within the libpng code. - */ - ptr += safe_length; - length -= safe_length; - } - while (length > 0); - - /* And the following is always safe because the crc is only 32 bits. */ - png_ptr->crc = (png_uint_32)crc; - } -} - -/* Check a user supplied version number, called from both read and write - * functions that create a png_struct. - */ -int -png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver) -{ - /* Libpng versions 1.0.0 and later are binary compatible if the version - * string matches through the second '.'; we must recompile any - * applications that use any older library version. - */ - - if (user_png_ver != NULL) - { - int i = -1; - int found_dots = 0; - - do - { - i++; - if (user_png_ver[i] != PNG_LIBPNG_VER_STRING[i]) - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; - if (user_png_ver[i] == '.') - found_dots++; - } while (found_dots < 2 && user_png_ver[i] != 0 && - PNG_LIBPNG_VER_STRING[i] != 0); - } - - else - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; - - if ((png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH) != 0) - { -#ifdef PNG_WARNINGS_SUPPORTED - size_t pos = 0; - char m[128]; - - pos = png_safecat(m, (sizeof m), pos, - "Application built with libpng-"); - pos = png_safecat(m, (sizeof m), pos, user_png_ver); - pos = png_safecat(m, (sizeof m), pos, " but running with "); - pos = png_safecat(m, (sizeof m), pos, PNG_LIBPNG_VER_STRING); - PNG_UNUSED(pos) - - png_warning(png_ptr, m); -#endif - -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - png_ptr->flags = 0; -#endif - - return 0; - } - - /* Success return. */ - return 1; -} - -/* Generic function to create a png_struct for either read or write - this - * contains the common initialization. - */ -PNG_FUNCTION(png_structp /* PRIVATE */, -png_create_png_struct,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED) -{ - png_struct create_struct; -# ifdef PNG_SETJMP_SUPPORTED - jmp_buf create_jmp_buf; -# endif - - /* This temporary stack-allocated structure is used to provide a place to - * build enough context to allow the user provided memory allocator (if any) - * to be called. - */ - memset(&create_struct, 0, (sizeof create_struct)); - - /* Added at libpng-1.2.6 */ -# ifdef PNG_USER_LIMITS_SUPPORTED - create_struct.user_width_max = PNG_USER_WIDTH_MAX; - create_struct.user_height_max = PNG_USER_HEIGHT_MAX; - -# ifdef PNG_USER_CHUNK_CACHE_MAX - /* Added at libpng-1.2.43 and 1.4.0 */ - create_struct.user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX; -# endif - -# ifdef PNG_USER_CHUNK_MALLOC_MAX - /* Added at libpng-1.2.43 and 1.4.1, required only for read but exists - * in png_struct regardless. - */ - create_struct.user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX; -# endif -# endif - - /* The following two API calls simply set fields in png_struct, so it is safe - * to do them now even though error handling is not yet set up. - */ -# ifdef PNG_USER_MEM_SUPPORTED - png_set_mem_fn(&create_struct, mem_ptr, malloc_fn, free_fn); -# else - PNG_UNUSED(mem_ptr) - PNG_UNUSED(malloc_fn) - PNG_UNUSED(free_fn) -# endif - - /* (*error_fn) can return control to the caller after the error_ptr is set, - * this will result in a memory leak unless the error_fn does something - * extremely sophisticated. The design lacks merit but is implicit in the - * API. - */ - png_set_error_fn(&create_struct, error_ptr, error_fn, warn_fn); - -# ifdef PNG_SETJMP_SUPPORTED - if (!setjmp(create_jmp_buf)) -# endif - { -# ifdef PNG_SETJMP_SUPPORTED - /* Temporarily fake out the longjmp information until we have - * successfully completed this function. This only works if we have - * setjmp() support compiled in, but it is safe - this stuff should - * never happen. - */ - create_struct.jmp_buf_ptr = &create_jmp_buf; - create_struct.jmp_buf_size = 0; /*stack allocation*/ - create_struct.longjmp_fn = longjmp; -# endif - /* Call the general version checker (shared with read and write code): - */ - if (png_user_version_check(&create_struct, user_png_ver) != 0) - { - png_structrp png_ptr = png_voidcast(png_structrp, - png_malloc_warn(&create_struct, (sizeof *png_ptr))); - - if (png_ptr != NULL) - { - /* png_ptr->zstream holds a back-pointer to the png_struct, so - * this can only be done now: - */ - create_struct.zstream.zalloc = png_zalloc; - create_struct.zstream.zfree = png_zfree; - create_struct.zstream.opaque = png_ptr; - -# ifdef PNG_SETJMP_SUPPORTED - /* Eliminate the local error handling: */ - create_struct.jmp_buf_ptr = NULL; - create_struct.jmp_buf_size = 0; - create_struct.longjmp_fn = 0; -# endif - - *png_ptr = create_struct; - - /* This is the successful return point */ - return png_ptr; - } - } - } - - /* A longjmp because of a bug in the application storage allocator or a - * simple failure to allocate the png_struct. - */ - return NULL; -} - -/* Allocate the memory for an info_struct for the application. */ -PNG_FUNCTION(png_infop,PNGAPI -png_create_info_struct,(png_const_structrp png_ptr),PNG_ALLOCATED) -{ - png_inforp info_ptr; - - png_debug(1, "in png_create_info_struct"); - - if (png_ptr == NULL) - return NULL; - - /* Use the internal API that does not (or at least should not) error out, so - * that this call always returns ok. The application typically sets up the - * error handling *after* creating the info_struct because this is the way it - * has always been done in 'example.c'. - */ - info_ptr = png_voidcast(png_inforp, png_malloc_base(png_ptr, - (sizeof *info_ptr))); - - if (info_ptr != NULL) - memset(info_ptr, 0, (sizeof *info_ptr)); - - return info_ptr; -} - -/* This function frees the memory associated with a single info struct. - * Normally, one would use either png_destroy_read_struct() or - * png_destroy_write_struct() to free an info struct, but this may be - * useful for some applications. From libpng 1.6.0 this function is also used - * internally to implement the png_info release part of the 'struct' destroy - * APIs. This ensures that all possible approaches free the same data (all of - * it). - */ -void PNGAPI -png_destroy_info_struct(png_const_structrp png_ptr, png_infopp info_ptr_ptr) -{ - png_inforp info_ptr = NULL; - - png_debug(1, "in png_destroy_info_struct"); - - if (png_ptr == NULL) - return; - - if (info_ptr_ptr != NULL) - info_ptr = *info_ptr_ptr; - - if (info_ptr != NULL) - { - /* Do this first in case of an error below; if the app implements its own - * memory management this can lead to png_free calling png_error, which - * will abort this routine and return control to the app error handler. - * An infinite loop may result if it then tries to free the same info - * ptr. - */ - *info_ptr_ptr = NULL; - - png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1); - memset(info_ptr, 0, (sizeof *info_ptr)); - png_free(png_ptr, info_ptr); - } -} - -/* Initialize the info structure. This is now an internal function (0.89) - * and applications using it are urged to use png_create_info_struct() - * instead. Use deprecated in 1.6.0, internal use removed (used internally it - * is just a memset). - * - * NOTE: it is almost inconceivable that this API is used because it bypasses - * the user-memory mechanism and the user error handling/warning mechanisms in - * those cases where it does anything other than a memset. - */ -PNG_FUNCTION(void,PNGAPI -png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size), - PNG_DEPRECATED) -{ - png_inforp info_ptr = *ptr_ptr; - - png_debug(1, "in png_info_init_3"); - - if (info_ptr == NULL) - return; - - if ((sizeof (png_info)) > png_info_struct_size) - { - *ptr_ptr = NULL; - /* The following line is why this API should not be used: */ - free(info_ptr); - info_ptr = png_voidcast(png_inforp, png_malloc_base(NULL, - (sizeof *info_ptr))); - if (info_ptr == NULL) - return; - *ptr_ptr = info_ptr; - } - - /* Set everything to 0 */ - memset(info_ptr, 0, (sizeof *info_ptr)); -} - -/* The following API is not called internally */ -void PNGAPI -png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr, - int freer, png_uint_32 mask) -{ - png_debug(1, "in png_data_freer"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (freer == PNG_DESTROY_WILL_FREE_DATA) - info_ptr->free_me |= mask; - - else if (freer == PNG_USER_WILL_FREE_DATA) - info_ptr->free_me &= ~mask; - - else - png_error(png_ptr, "Unknown freer parameter in png_data_freer"); -} - -void PNGAPI -png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask, - int num) -{ - png_debug(1, "in png_free_data"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - -#ifdef PNG_TEXT_SUPPORTED - /* Free text item num or (if num == -1) all text items */ - if (info_ptr->text != NULL && - ((mask & PNG_FREE_TEXT) & info_ptr->free_me) != 0) - { - if (num != -1) - { - png_free(png_ptr, info_ptr->text[num].key); - info_ptr->text[num].key = NULL; - } - - else - { - int i; - - for (i = 0; i < info_ptr->num_text; i++) - png_free(png_ptr, info_ptr->text[i].key); - - png_free(png_ptr, info_ptr->text); - info_ptr->text = NULL; - info_ptr->num_text = 0; - info_ptr->max_text = 0; - } - } -#endif - -#ifdef PNG_tRNS_SUPPORTED - /* Free any tRNS entry */ - if (((mask & PNG_FREE_TRNS) & info_ptr->free_me) != 0) - { - info_ptr->valid &= ~PNG_INFO_tRNS; - png_free(png_ptr, info_ptr->trans_alpha); - info_ptr->trans_alpha = NULL; - info_ptr->num_trans = 0; - } -#endif - -#ifdef PNG_sCAL_SUPPORTED - /* Free any sCAL entry */ - if (((mask & PNG_FREE_SCAL) & info_ptr->free_me) != 0) - { - png_free(png_ptr, info_ptr->scal_s_width); - png_free(png_ptr, info_ptr->scal_s_height); - info_ptr->scal_s_width = NULL; - info_ptr->scal_s_height = NULL; - info_ptr->valid &= ~PNG_INFO_sCAL; - } -#endif - -#ifdef PNG_pCAL_SUPPORTED - /* Free any pCAL entry */ - if (((mask & PNG_FREE_PCAL) & info_ptr->free_me) != 0) - { - png_free(png_ptr, info_ptr->pcal_purpose); - png_free(png_ptr, info_ptr->pcal_units); - info_ptr->pcal_purpose = NULL; - info_ptr->pcal_units = NULL; - - if (info_ptr->pcal_params != NULL) - { - int i; - - for (i = 0; i < info_ptr->pcal_nparams; i++) - png_free(png_ptr, info_ptr->pcal_params[i]); - - png_free(png_ptr, info_ptr->pcal_params); - info_ptr->pcal_params = NULL; - } - info_ptr->valid &= ~PNG_INFO_pCAL; - } -#endif - -#ifdef PNG_iCCP_SUPPORTED - /* Free any profile entry */ - if (((mask & PNG_FREE_ICCP) & info_ptr->free_me) != 0) - { - png_free(png_ptr, info_ptr->iccp_name); - png_free(png_ptr, info_ptr->iccp_profile); - info_ptr->iccp_name = NULL; - info_ptr->iccp_profile = NULL; - info_ptr->valid &= ~PNG_INFO_iCCP; - } -#endif - -#ifdef PNG_sPLT_SUPPORTED - /* Free a given sPLT entry, or (if num == -1) all sPLT entries */ - if (info_ptr->splt_palettes != NULL && - ((mask & PNG_FREE_SPLT) & info_ptr->free_me) != 0) - { - if (num != -1) - { - png_free(png_ptr, info_ptr->splt_palettes[num].name); - png_free(png_ptr, info_ptr->splt_palettes[num].entries); - info_ptr->splt_palettes[num].name = NULL; - info_ptr->splt_palettes[num].entries = NULL; - } - - else - { - int i; - - for (i = 0; i < info_ptr->splt_palettes_num; i++) - { - png_free(png_ptr, info_ptr->splt_palettes[i].name); - png_free(png_ptr, info_ptr->splt_palettes[i].entries); - } - - png_free(png_ptr, info_ptr->splt_palettes); - info_ptr->splt_palettes = NULL; - info_ptr->splt_palettes_num = 0; - info_ptr->valid &= ~PNG_INFO_sPLT; - } - } -#endif - -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED - if (info_ptr->unknown_chunks != NULL && - ((mask & PNG_FREE_UNKN) & info_ptr->free_me) != 0) - { - if (num != -1) - { - png_free(png_ptr, info_ptr->unknown_chunks[num].data); - info_ptr->unknown_chunks[num].data = NULL; - } - - else - { - int i; - - for (i = 0; i < info_ptr->unknown_chunks_num; i++) - png_free(png_ptr, info_ptr->unknown_chunks[i].data); - - png_free(png_ptr, info_ptr->unknown_chunks); - info_ptr->unknown_chunks = NULL; - info_ptr->unknown_chunks_num = 0; - } - } -#endif - -#ifdef PNG_eXIf_SUPPORTED - /* Free any eXIf entry */ - if (((mask & PNG_FREE_EXIF) & info_ptr->free_me) != 0) - { -# ifdef PNG_READ_eXIf_SUPPORTED - if (info_ptr->eXIf_buf) - { - png_free(png_ptr, info_ptr->eXIf_buf); - info_ptr->eXIf_buf = NULL; - } -# endif - if (info_ptr->exif) - { - png_free(png_ptr, info_ptr->exif); - info_ptr->exif = NULL; - } - info_ptr->valid &= ~PNG_INFO_eXIf; - } -#endif - -#ifdef PNG_hIST_SUPPORTED - /* Free any hIST entry */ - if (((mask & PNG_FREE_HIST) & info_ptr->free_me) != 0) - { - png_free(png_ptr, info_ptr->hist); - info_ptr->hist = NULL; - info_ptr->valid &= ~PNG_INFO_hIST; - } -#endif - - /* Free any PLTE entry that was internally allocated */ - if (((mask & PNG_FREE_PLTE) & info_ptr->free_me) != 0) - { - png_free(png_ptr, info_ptr->palette); - info_ptr->palette = NULL; - info_ptr->valid &= ~PNG_INFO_PLTE; - info_ptr->num_palette = 0; - } - -#ifdef PNG_INFO_IMAGE_SUPPORTED - /* Free any image bits attached to the info structure */ - if (((mask & PNG_FREE_ROWS) & info_ptr->free_me) != 0) - { - if (info_ptr->row_pointers != NULL) - { - png_uint_32 row; - for (row = 0; row < info_ptr->height; row++) - png_free(png_ptr, info_ptr->row_pointers[row]); - - png_free(png_ptr, info_ptr->row_pointers); - info_ptr->row_pointers = NULL; - } - info_ptr->valid &= ~PNG_INFO_IDAT; - } -#endif - - if (num != -1) - mask &= ~PNG_FREE_MUL; - - info_ptr->free_me &= ~mask; -} -#endif /* READ || WRITE */ - -/* This function returns a pointer to the io_ptr associated with the user - * functions. The application should free any memory associated with this - * pointer before png_write_destroy() or png_read_destroy() are called. - */ -png_voidp PNGAPI -png_get_io_ptr(png_const_structrp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); - - return (png_ptr->io_ptr); -} - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -# ifdef PNG_STDIO_SUPPORTED -/* Initialize the default input/output functions for the PNG file. If you - * use your own read or write routines, you can call either png_set_read_fn() - * or png_set_write_fn() instead of png_init_io(). If you have defined - * PNG_NO_STDIO or otherwise disabled PNG_STDIO_SUPPORTED, you must use a - * function of your own because "FILE *" isn't necessarily available. - */ -void PNGAPI -png_init_io(png_structrp png_ptr, png_FILE_p fp) -{ - png_debug(1, "in png_init_io"); - - if (png_ptr == NULL) - return; - - png_ptr->io_ptr = (png_voidp)fp; -} -# endif - -# ifdef PNG_SAVE_INT_32_SUPPORTED -/* PNG signed integers are saved in 32-bit 2's complement format. ANSI C-90 - * defines a cast of a signed integer to an unsigned integer either to preserve - * the value, if it is positive, or to calculate: - * - * (UNSIGNED_MAX+1) + integer - * - * Where UNSIGNED_MAX is the appropriate maximum unsigned value, so when the - * negative integral value is added the result will be an unsigned value - * correspnding to the 2's complement representation. - */ -void PNGAPI -png_save_int_32(png_bytep buf, png_int_32 i) -{ - png_save_uint_32(buf, (png_uint_32)i); -} -# endif - -# ifdef PNG_TIME_RFC1123_SUPPORTED -/* Convert the supplied time into an RFC 1123 string suitable for use in - * a "Creation Time" or other text-based time string. - */ -int PNGAPI -png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime) -{ - static PNG_CONST char short_months[12][4] = - {"Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - - if (out == NULL) - return 0; - - if (ptime->year > 9999 /* RFC1123 limitation */ || - ptime->month == 0 || ptime->month > 12 || - ptime->day == 0 || ptime->day > 31 || - ptime->hour > 23 || ptime->minute > 59 || - ptime->second > 60) - return 0; - - { - size_t pos = 0; - char number_buf[5]; /* enough for a four-digit year */ - -# define APPEND_STRING(string) pos = png_safecat(out, 29, pos, (string)) -# define APPEND_NUMBER(format, value)\ - APPEND_STRING(PNG_FORMAT_NUMBER(number_buf, format, (value))) -# define APPEND(ch) if (pos < 28) out[pos++] = (ch) - - APPEND_NUMBER(PNG_NUMBER_FORMAT_u, (unsigned)ptime->day); - APPEND(' '); - APPEND_STRING(short_months[(ptime->month - 1)]); - APPEND(' '); - APPEND_NUMBER(PNG_NUMBER_FORMAT_u, ptime->year); - APPEND(' '); - APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->hour); - APPEND(':'); - APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->minute); - APPEND(':'); - APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second); - APPEND_STRING(" +0000"); /* This reliably terminates the buffer */ - PNG_UNUSED (pos) - -# undef APPEND -# undef APPEND_NUMBER -# undef APPEND_STRING - } - - return 1; -} - -# if PNG_LIBPNG_VER < 10700 -/* To do: remove the following from libpng-1.7 */ -/* Original API that uses a private buffer in png_struct. - * Deprecated because it causes png_struct to carry a spurious temporary - * buffer (png_struct::time_buffer), better to have the caller pass this in. - */ -png_const_charp PNGAPI -png_convert_to_rfc1123(png_structrp png_ptr, png_const_timep ptime) -{ - if (png_ptr != NULL) - { - /* The only failure above if png_ptr != NULL is from an invalid ptime */ - if (png_convert_to_rfc1123_buffer(png_ptr->time_buffer, ptime) == 0) - png_warning(png_ptr, "Ignoring invalid time value"); - - else - return png_ptr->time_buffer; - } - - return NULL; -} -# endif /* LIBPNG_VER < 10700 */ -# endif /* TIME_RFC1123 */ - -#endif /* READ || WRITE */ - -png_const_charp PNGAPI -png_get_copyright(png_const_structrp png_ptr) -{ - PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */ -#ifdef PNG_STRING_COPYRIGHT - return PNG_STRING_COPYRIGHT -#else -# ifdef __STDC__ - return PNG_STRING_NEWLINE \ - "libpng version 1.6.34 - September 29, 2017" PNG_STRING_NEWLINE \ - "Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson" \ - PNG_STRING_NEWLINE \ - "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \ - "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \ - PNG_STRING_NEWLINE; -# else - return "libpng version 1.6.34 - September 29, 2017\ - Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson\ - Copyright (c) 1996-1997 Andreas Dilger\ - Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc."; -# endif -#endif -} - -/* The following return the library version as a short string in the - * format 1.0.0 through 99.99.99zz. To get the version of *.h files - * used with your application, print out PNG_LIBPNG_VER_STRING, which - * is defined in png.h. - * Note: now there is no difference between png_get_libpng_ver() and - * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard, - * it is guaranteed that png.c uses the correct version of png.h. - */ -png_const_charp PNGAPI -png_get_libpng_ver(png_const_structrp png_ptr) -{ - /* Version of *.c files used when building libpng */ - return png_get_header_ver(png_ptr); -} - -png_const_charp PNGAPI -png_get_header_ver(png_const_structrp png_ptr) -{ - /* Version of *.h files used when building libpng */ - PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */ - return PNG_LIBPNG_VER_STRING; -} - -png_const_charp PNGAPI -png_get_header_version(png_const_structrp png_ptr) -{ - /* Returns longer string containing both version and date */ - PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */ -#ifdef __STDC__ - return PNG_HEADER_VERSION_STRING -# ifndef PNG_READ_SUPPORTED - " (NO READ SUPPORT)" -# endif - PNG_STRING_NEWLINE; -#else - return PNG_HEADER_VERSION_STRING; -#endif -} - -#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED -/* NOTE: this routine is not used internally! */ -/* Build a grayscale palette. Palette is assumed to be 1 << bit_depth - * large of png_color. This lets grayscale images be treated as - * paletted. Most useful for gamma correction and simplification - * of code. This API is not used internally. - */ -void PNGAPI -png_build_grayscale_palette(int bit_depth, png_colorp palette) -{ - int num_palette; - int color_inc; - int i; - int v; - - png_debug(1, "in png_do_build_grayscale_palette"); - - if (palette == NULL) - return; - - switch (bit_depth) - { - case 1: - num_palette = 2; - color_inc = 0xff; - break; - - case 2: - num_palette = 4; - color_inc = 0x55; - break; - - case 4: - num_palette = 16; - color_inc = 0x11; - break; - - case 8: - num_palette = 256; - color_inc = 1; - break; - - default: - num_palette = 0; - color_inc = 0; - break; - } - - for (i = 0, v = 0; i < num_palette; i++, v += color_inc) - { - palette[i].red = (png_byte)(v & 0xff); - palette[i].green = (png_byte)(v & 0xff); - palette[i].blue = (png_byte)(v & 0xff); - } -} -#endif - -#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED -int PNGAPI -png_handle_as_unknown(png_const_structrp png_ptr, png_const_bytep chunk_name) -{ - /* Check chunk_name and return "keep" value if it's on the list, else 0 */ - png_const_bytep p, p_end; - - if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list == 0) - return PNG_HANDLE_CHUNK_AS_DEFAULT; - - p_end = png_ptr->chunk_list; - p = p_end + png_ptr->num_chunk_list*5; /* beyond end */ - - /* The code is the fifth byte after each four byte string. Historically this - * code was always searched from the end of the list, this is no longer - * necessary because the 'set' routine handles duplicate entries correcty. - */ - do /* num_chunk_list > 0, so at least one */ - { - p -= 5; - - if (memcmp(chunk_name, p, 4) == 0) - return p[4]; - } - while (p > p_end); - - /* This means that known chunks should be processed and unknown chunks should - * be handled according to the value of png_ptr->unknown_default; this can be - * confusing because, as a result, there are two levels of defaulting for - * unknown chunks. - */ - return PNG_HANDLE_CHUNK_AS_DEFAULT; -} - -#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) ||\ - defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) -int /* PRIVATE */ -png_chunk_unknown_handling(png_const_structrp png_ptr, png_uint_32 chunk_name) -{ - png_byte chunk_string[5]; - - PNG_CSTRING_FROM_CHUNK(chunk_string, chunk_name); - return png_handle_as_unknown(png_ptr, chunk_string); -} -#endif /* READ_UNKNOWN_CHUNKS || HANDLE_AS_UNKNOWN */ -#endif /* SET_UNKNOWN_CHUNKS */ - -#ifdef PNG_READ_SUPPORTED -/* This function, added to libpng-1.0.6g, is untested. */ -int PNGAPI -png_reset_zstream(png_structrp png_ptr) -{ - if (png_ptr == NULL) - return Z_STREAM_ERROR; - - /* WARNING: this resets the window bits to the maximum! */ - return (inflateReset(&png_ptr->zstream)); -} -#endif /* READ */ - -/* This function was added to libpng-1.0.7 */ -png_uint_32 PNGAPI -png_access_version_number(void) -{ - /* Version of *.c files used when building libpng */ - return((png_uint_32)PNG_LIBPNG_VER); -} - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -/* Ensure that png_ptr->zstream.msg holds some appropriate error message string. - * If it doesn't 'ret' is used to set it to something appropriate, even in cases - * like Z_OK or Z_STREAM_END where the error code is apparently a success code. - */ -void /* PRIVATE */ -png_zstream_error(png_structrp png_ptr, int ret) -{ - /* Translate 'ret' into an appropriate error string, priority is given to the - * one in zstream if set. This always returns a string, even in cases like - * Z_OK or Z_STREAM_END where the error code is a success code. - */ - if (png_ptr->zstream.msg == NULL) switch (ret) - { - default: - case Z_OK: - png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected zlib return code"); - break; - - case Z_STREAM_END: - /* Normal exit */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected end of LZ stream"); - break; - - case Z_NEED_DICT: - /* This means the deflate stream did not have a dictionary; this - * indicates a bogus PNG. - */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("missing LZ dictionary"); - break; - - case Z_ERRNO: - /* gz APIs only: should not happen */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("zlib IO error"); - break; - - case Z_STREAM_ERROR: - /* internal libpng error */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("bad parameters to zlib"); - break; - - case Z_DATA_ERROR: - png_ptr->zstream.msg = PNGZ_MSG_CAST("damaged LZ stream"); - break; - - case Z_MEM_ERROR: - png_ptr->zstream.msg = PNGZ_MSG_CAST("insufficient memory"); - break; - - case Z_BUF_ERROR: - /* End of input or output; not a problem if the caller is doing - * incremental read or write. - */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("truncated"); - break; - - case Z_VERSION_ERROR: - png_ptr->zstream.msg = PNGZ_MSG_CAST("unsupported zlib version"); - break; - - case PNG_UNEXPECTED_ZLIB_RETURN: - /* Compile errors here mean that zlib now uses the value co-opted in - * pngpriv.h for PNG_UNEXPECTED_ZLIB_RETURN; update the switch above - * and change pngpriv.h. Note that this message is "... return", - * whereas the default/Z_OK one is "... return code". - */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected zlib return"); - break; - } -} - -/* png_convert_size: a PNGAPI but no longer in png.h, so deleted - * at libpng 1.5.5! - */ - -/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */ -#ifdef PNG_GAMMA_SUPPORTED /* always set if COLORSPACE */ -static int -png_colorspace_check_gamma(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_fixed_point gAMA, int from) - /* This is called to check a new gamma value against an existing one. The - * routine returns false if the new gamma value should not be written. - * - * 'from' says where the new gamma value comes from: - * - * 0: the new gamma value is the libpng estimate for an ICC profile - * 1: the new gamma value comes from a gAMA chunk - * 2: the new gamma value comes from an sRGB chunk - */ -{ - png_fixed_point gtest; - - if ((colorspace->flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 && - (png_muldiv(>est, colorspace->gamma, PNG_FP_1, gAMA) == 0 || - png_gamma_significant(gtest) != 0)) - { - /* Either this is an sRGB image, in which case the calculated gamma - * approximation should match, or this is an image with a profile and the - * value libpng calculates for the gamma of the profile does not match the - * value recorded in the file. The former, sRGB, case is an error, the - * latter is just a warning. - */ - if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0 || from == 2) - { - png_chunk_report(png_ptr, "gamma value does not match sRGB", - PNG_CHUNK_ERROR); - /* Do not overwrite an sRGB value */ - return from == 2; - } - - else /* sRGB tag not involved */ - { - png_chunk_report(png_ptr, "gamma value does not match libpng estimate", - PNG_CHUNK_WARNING); - return from == 1; - } - } - - return 1; -} - -void /* PRIVATE */ -png_colorspace_set_gamma(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_fixed_point gAMA) -{ - /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't - * occur. Since the fixed point representation is asymetrical it is - * possible for 1/gamma to overflow the limit of 21474 and this means the - * gamma value must be at least 5/100000 and hence at most 20000.0. For - * safety the limits here are a little narrower. The values are 0.00016 to - * 6250.0, which are truly ridiculous gamma values (and will produce - * displays that are all black or all white.) - * - * In 1.6.0 this test replaces the ones in pngrutil.c, in the gAMA chunk - * handling code, which only required the value to be >0. - */ - png_const_charp errmsg; - - if (gAMA < 16 || gAMA > 625000000) - errmsg = "gamma value out of range"; - -# ifdef PNG_READ_gAMA_SUPPORTED - /* Allow the application to set the gamma value more than once */ - else if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 && - (colorspace->flags & PNG_COLORSPACE_FROM_gAMA) != 0) - errmsg = "duplicate"; -# endif - - /* Do nothing if the colorspace is already invalid */ - else if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0) - return; - - else - { - if (png_colorspace_check_gamma(png_ptr, colorspace, gAMA, - 1/*from gAMA*/) != 0) - { - /* Store this gamma value. */ - colorspace->gamma = gAMA; - colorspace->flags |= - (PNG_COLORSPACE_HAVE_GAMMA | PNG_COLORSPACE_FROM_gAMA); - } - - /* At present if the check_gamma test fails the gamma of the colorspace is - * not updated however the colorspace is not invalidated. This - * corresponds to the case where the existing gamma comes from an sRGB - * chunk or profile. An error message has already been output. - */ - return; - } - - /* Error exit - errmsg has been set. */ - colorspace->flags |= PNG_COLORSPACE_INVALID; - png_chunk_report(png_ptr, errmsg, PNG_CHUNK_WRITE_ERROR); -} - -void /* PRIVATE */ -png_colorspace_sync_info(png_const_structrp png_ptr, png_inforp info_ptr) -{ - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) - { - /* Everything is invalid */ - info_ptr->valid &= ~(PNG_INFO_gAMA|PNG_INFO_cHRM|PNG_INFO_sRGB| - PNG_INFO_iCCP); - -# ifdef PNG_COLORSPACE_SUPPORTED - /* Clean up the iCCP profile now if it won't be used. */ - png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, -1/*not used*/); -# else - PNG_UNUSED(png_ptr) -# endif - } - - else - { -# ifdef PNG_COLORSPACE_SUPPORTED - /* Leave the INFO_iCCP flag set if the pngset.c code has already set - * it; this allows a PNG to contain a profile which matches sRGB and - * yet still have that profile retrievable by the application. - */ - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_MATCHES_sRGB) != 0) - info_ptr->valid |= PNG_INFO_sRGB; - - else - info_ptr->valid &= ~PNG_INFO_sRGB; - - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - info_ptr->valid |= PNG_INFO_cHRM; - - else - info_ptr->valid &= ~PNG_INFO_cHRM; -# endif - - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0) - info_ptr->valid |= PNG_INFO_gAMA; - - else - info_ptr->valid &= ~PNG_INFO_gAMA; - } -} - -#ifdef PNG_READ_SUPPORTED -void /* PRIVATE */ -png_colorspace_sync(png_const_structrp png_ptr, png_inforp info_ptr) -{ - if (info_ptr == NULL) /* reduce code size; check here not in the caller */ - return; - - info_ptr->colorspace = png_ptr->colorspace; - png_colorspace_sync_info(png_ptr, info_ptr); -} -#endif -#endif /* GAMMA */ - -#ifdef PNG_COLORSPACE_SUPPORTED -/* Added at libpng-1.5.5 to support read and write of true CIEXYZ values for - * cHRM, as opposed to using chromaticities. These internal APIs return - * non-zero on a parameter error. The X, Y and Z values are required to be - * positive and less than 1.0. - */ -static int -png_xy_from_XYZ(png_xy *xy, const png_XYZ *XYZ) -{ - png_int_32 d, dwhite, whiteX, whiteY; - - d = XYZ->red_X + XYZ->red_Y + XYZ->red_Z; - if (png_muldiv(&xy->redx, XYZ->red_X, PNG_FP_1, d) == 0) - return 1; - if (png_muldiv(&xy->redy, XYZ->red_Y, PNG_FP_1, d) == 0) - return 1; - dwhite = d; - whiteX = XYZ->red_X; - whiteY = XYZ->red_Y; - - d = XYZ->green_X + XYZ->green_Y + XYZ->green_Z; - if (png_muldiv(&xy->greenx, XYZ->green_X, PNG_FP_1, d) == 0) - return 1; - if (png_muldiv(&xy->greeny, XYZ->green_Y, PNG_FP_1, d) == 0) - return 1; - dwhite += d; - whiteX += XYZ->green_X; - whiteY += XYZ->green_Y; - - d = XYZ->blue_X + XYZ->blue_Y + XYZ->blue_Z; - if (png_muldiv(&xy->bluex, XYZ->blue_X, PNG_FP_1, d) == 0) - return 1; - if (png_muldiv(&xy->bluey, XYZ->blue_Y, PNG_FP_1, d) == 0) - return 1; - dwhite += d; - whiteX += XYZ->blue_X; - whiteY += XYZ->blue_Y; - - /* The reference white is simply the sum of the end-point (X,Y,Z) vectors, - * thus: - */ - if (png_muldiv(&xy->whitex, whiteX, PNG_FP_1, dwhite) == 0) - return 1; - if (png_muldiv(&xy->whitey, whiteY, PNG_FP_1, dwhite) == 0) - return 1; - - return 0; -} - -static int -png_XYZ_from_xy(png_XYZ *XYZ, const png_xy *xy) -{ - png_fixed_point red_inverse, green_inverse, blue_scale; - png_fixed_point left, right, denominator; - - /* Check xy and, implicitly, z. Note that wide gamut color spaces typically - * have end points with 0 tristimulus values (these are impossible end - * points, but they are used to cover the possible colors). We check - * xy->whitey against 5, not 0, to avoid a possible integer overflow. - */ - if (xy->redx < 0 || xy->redx > PNG_FP_1) return 1; - if (xy->redy < 0 || xy->redy > PNG_FP_1-xy->redx) return 1; - if (xy->greenx < 0 || xy->greenx > PNG_FP_1) return 1; - if (xy->greeny < 0 || xy->greeny > PNG_FP_1-xy->greenx) return 1; - if (xy->bluex < 0 || xy->bluex > PNG_FP_1) return 1; - if (xy->bluey < 0 || xy->bluey > PNG_FP_1-xy->bluex) return 1; - if (xy->whitex < 0 || xy->whitex > PNG_FP_1) return 1; - if (xy->whitey < 5 || xy->whitey > PNG_FP_1-xy->whitex) return 1; - - /* The reverse calculation is more difficult because the original tristimulus - * value had 9 independent values (red,green,blue)x(X,Y,Z) however only 8 - * derived values were recorded in the cHRM chunk; - * (red,green,blue,white)x(x,y). This loses one degree of freedom and - * therefore an arbitrary ninth value has to be introduced to undo the - * original transformations. - * - * Think of the original end-points as points in (X,Y,Z) space. The - * chromaticity values (c) have the property: - * - * C - * c = --------- - * X + Y + Z - * - * For each c (x,y,z) from the corresponding original C (X,Y,Z). Thus the - * three chromaticity values (x,y,z) for each end-point obey the - * relationship: - * - * x + y + z = 1 - * - * This describes the plane in (X,Y,Z) space that intersects each axis at the - * value 1.0; call this the chromaticity plane. Thus the chromaticity - * calculation has scaled each end-point so that it is on the x+y+z=1 plane - * and chromaticity is the intersection of the vector from the origin to the - * (X,Y,Z) value with the chromaticity plane. - * - * To fully invert the chromaticity calculation we would need the three - * end-point scale factors, (red-scale, green-scale, blue-scale), but these - * were not recorded. Instead we calculated the reference white (X,Y,Z) and - * recorded the chromaticity of this. The reference white (X,Y,Z) would have - * given all three of the scale factors since: - * - * color-C = color-c * color-scale - * white-C = red-C + green-C + blue-C - * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale - * - * But cHRM records only white-x and white-y, so we have lost the white scale - * factor: - * - * white-C = white-c*white-scale - * - * To handle this the inverse transformation makes an arbitrary assumption - * about white-scale: - * - * Assume: white-Y = 1.0 - * Hence: white-scale = 1/white-y - * Or: red-Y + green-Y + blue-Y = 1.0 - * - * Notice the last statement of the assumption gives an equation in three of - * the nine values we want to calculate. 8 more equations come from the - * above routine as summarised at the top above (the chromaticity - * calculation): - * - * Given: color-x = color-X / (color-X + color-Y + color-Z) - * Hence: (color-x - 1)*color-X + color.x*color-Y + color.x*color-Z = 0 - * - * This is 9 simultaneous equations in the 9 variables "color-C" and can be - * solved by Cramer's rule. Cramer's rule requires calculating 10 9x9 matrix - * determinants, however this is not as bad as it seems because only 28 of - * the total of 90 terms in the various matrices are non-zero. Nevertheless - * Cramer's rule is notoriously numerically unstable because the determinant - * calculation involves the difference of large, but similar, numbers. It is - * difficult to be sure that the calculation is stable for real world values - * and it is certain that it becomes unstable where the end points are close - * together. - * - * So this code uses the perhaps slightly less optimal but more - * understandable and totally obvious approach of calculating color-scale. - * - * This algorithm depends on the precision in white-scale and that is - * (1/white-y), so we can immediately see that as white-y approaches 0 the - * accuracy inherent in the cHRM chunk drops off substantially. - * - * libpng arithmetic: a simple inversion of the above equations - * ------------------------------------------------------------ - * - * white_scale = 1/white-y - * white-X = white-x * white-scale - * white-Y = 1.0 - * white-Z = (1 - white-x - white-y) * white_scale - * - * white-C = red-C + green-C + blue-C - * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale - * - * This gives us three equations in (red-scale,green-scale,blue-scale) where - * all the coefficients are now known: - * - * red-x*red-scale + green-x*green-scale + blue-x*blue-scale - * = white-x/white-y - * red-y*red-scale + green-y*green-scale + blue-y*blue-scale = 1 - * red-z*red-scale + green-z*green-scale + blue-z*blue-scale - * = (1 - white-x - white-y)/white-y - * - * In the last equation color-z is (1 - color-x - color-y) so we can add all - * three equations together to get an alternative third: - * - * red-scale + green-scale + blue-scale = 1/white-y = white-scale - * - * So now we have a Cramer's rule solution where the determinants are just - * 3x3 - far more tractible. Unfortunately 3x3 determinants still involve - * multiplication of three coefficients so we can't guarantee to avoid - * overflow in the libpng fixed point representation. Using Cramer's rule in - * floating point is probably a good choice here, but it's not an option for - * fixed point. Instead proceed to simplify the first two equations by - * eliminating what is likely to be the largest value, blue-scale: - * - * blue-scale = white-scale - red-scale - green-scale - * - * Hence: - * - * (red-x - blue-x)*red-scale + (green-x - blue-x)*green-scale = - * (white-x - blue-x)*white-scale - * - * (red-y - blue-y)*red-scale + (green-y - blue-y)*green-scale = - * 1 - blue-y*white-scale - * - * And now we can trivially solve for (red-scale,green-scale): - * - * green-scale = - * (white-x - blue-x)*white-scale - (red-x - blue-x)*red-scale - * ----------------------------------------------------------- - * green-x - blue-x - * - * red-scale = - * 1 - blue-y*white-scale - (green-y - blue-y) * green-scale - * --------------------------------------------------------- - * red-y - blue-y - * - * Hence: - * - * red-scale = - * ( (green-x - blue-x) * (white-y - blue-y) - - * (green-y - blue-y) * (white-x - blue-x) ) / white-y - * ------------------------------------------------------------------------- - * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x) - * - * green-scale = - * ( (red-y - blue-y) * (white-x - blue-x) - - * (red-x - blue-x) * (white-y - blue-y) ) / white-y - * ------------------------------------------------------------------------- - * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x) - * - * Accuracy: - * The input values have 5 decimal digits of accuracy. The values are all in - * the range 0 < value < 1, so simple products are in the same range but may - * need up to 10 decimal digits to preserve the original precision and avoid - * underflow. Because we are using a 32-bit signed representation we cannot - * match this; the best is a little over 9 decimal digits, less than 10. - * - * The approach used here is to preserve the maximum precision within the - * signed representation. Because the red-scale calculation above uses the - * difference between two products of values that must be in the range -1..+1 - * it is sufficient to divide the product by 7; ceil(100,000/32767*2). The - * factor is irrelevant in the calculation because it is applied to both - * numerator and denominator. - * - * Note that the values of the differences of the products of the - * chromaticities in the above equations tend to be small, for example for - * the sRGB chromaticities they are: - * - * red numerator: -0.04751 - * green numerator: -0.08788 - * denominator: -0.2241 (without white-y multiplication) - * - * The resultant Y coefficients from the chromaticities of some widely used - * color space definitions are (to 15 decimal places): - * - * sRGB - * 0.212639005871510 0.715168678767756 0.072192315360734 - * Kodak ProPhoto - * 0.288071128229293 0.711843217810102 0.000085653960605 - * Adobe RGB - * 0.297344975250536 0.627363566255466 0.075291458493998 - * Adobe Wide Gamut RGB - * 0.258728243040113 0.724682314948566 0.016589442011321 - */ - /* By the argument, above overflow should be impossible here. The return - * value of 2 indicates an internal error to the caller. - */ - if (png_muldiv(&left, xy->greenx-xy->bluex, xy->redy - xy->bluey, 7) == 0) - return 2; - if (png_muldiv(&right, xy->greeny-xy->bluey, xy->redx - xy->bluex, 7) == 0) - return 2; - denominator = left - right; - - /* Now find the red numerator. */ - if (png_muldiv(&left, xy->greenx-xy->bluex, xy->whitey-xy->bluey, 7) == 0) - return 2; - if (png_muldiv(&right, xy->greeny-xy->bluey, xy->whitex-xy->bluex, 7) == 0) - return 2; - - /* Overflow is possible here and it indicates an extreme set of PNG cHRM - * chunk values. This calculation actually returns the reciprocal of the - * scale value because this allows us to delay the multiplication of white-y - * into the denominator, which tends to produce a small number. - */ - if (png_muldiv(&red_inverse, xy->whitey, denominator, left-right) == 0 || - red_inverse <= xy->whitey /* r+g+b scales = white scale */) - return 1; - - /* Similarly for green_inverse: */ - if (png_muldiv(&left, xy->redy-xy->bluey, xy->whitex-xy->bluex, 7) == 0) - return 2; - if (png_muldiv(&right, xy->redx-xy->bluex, xy->whitey-xy->bluey, 7) == 0) - return 2; - if (png_muldiv(&green_inverse, xy->whitey, denominator, left-right) == 0 || - green_inverse <= xy->whitey) - return 1; - - /* And the blue scale, the checks above guarantee this can't overflow but it - * can still produce 0 for extreme cHRM values. - */ - blue_scale = png_reciprocal(xy->whitey) - png_reciprocal(red_inverse) - - png_reciprocal(green_inverse); - if (blue_scale <= 0) - return 1; - - - /* And fill in the png_XYZ: */ - if (png_muldiv(&XYZ->red_X, xy->redx, PNG_FP_1, red_inverse) == 0) - return 1; - if (png_muldiv(&XYZ->red_Y, xy->redy, PNG_FP_1, red_inverse) == 0) - return 1; - if (png_muldiv(&XYZ->red_Z, PNG_FP_1 - xy->redx - xy->redy, PNG_FP_1, - red_inverse) == 0) - return 1; - - if (png_muldiv(&XYZ->green_X, xy->greenx, PNG_FP_1, green_inverse) == 0) - return 1; - if (png_muldiv(&XYZ->green_Y, xy->greeny, PNG_FP_1, green_inverse) == 0) - return 1; - if (png_muldiv(&XYZ->green_Z, PNG_FP_1 - xy->greenx - xy->greeny, PNG_FP_1, - green_inverse) == 0) - return 1; - - if (png_muldiv(&XYZ->blue_X, xy->bluex, blue_scale, PNG_FP_1) == 0) - return 1; - if (png_muldiv(&XYZ->blue_Y, xy->bluey, blue_scale, PNG_FP_1) == 0) - return 1; - if (png_muldiv(&XYZ->blue_Z, PNG_FP_1 - xy->bluex - xy->bluey, blue_scale, - PNG_FP_1) == 0) - return 1; - - return 0; /*success*/ -} - -static int -png_XYZ_normalize(png_XYZ *XYZ) -{ - png_int_32 Y; - - if (XYZ->red_Y < 0 || XYZ->green_Y < 0 || XYZ->blue_Y < 0 || - XYZ->red_X < 0 || XYZ->green_X < 0 || XYZ->blue_X < 0 || - XYZ->red_Z < 0 || XYZ->green_Z < 0 || XYZ->blue_Z < 0) - return 1; - - /* Normalize by scaling so the sum of the end-point Y values is PNG_FP_1. - * IMPLEMENTATION NOTE: ANSI requires signed overflow not to occur, therefore - * relying on addition of two positive values producing a negative one is not - * safe. - */ - Y = XYZ->red_Y; - if (0x7fffffff - Y < XYZ->green_X) - return 1; - Y += XYZ->green_Y; - if (0x7fffffff - Y < XYZ->blue_X) - return 1; - Y += XYZ->blue_Y; - - if (Y != PNG_FP_1) - { - if (png_muldiv(&XYZ->red_X, XYZ->red_X, PNG_FP_1, Y) == 0) - return 1; - if (png_muldiv(&XYZ->red_Y, XYZ->red_Y, PNG_FP_1, Y) == 0) - return 1; - if (png_muldiv(&XYZ->red_Z, XYZ->red_Z, PNG_FP_1, Y) == 0) - return 1; - - if (png_muldiv(&XYZ->green_X, XYZ->green_X, PNG_FP_1, Y) == 0) - return 1; - if (png_muldiv(&XYZ->green_Y, XYZ->green_Y, PNG_FP_1, Y) == 0) - return 1; - if (png_muldiv(&XYZ->green_Z, XYZ->green_Z, PNG_FP_1, Y) == 0) - return 1; - - if (png_muldiv(&XYZ->blue_X, XYZ->blue_X, PNG_FP_1, Y) == 0) - return 1; - if (png_muldiv(&XYZ->blue_Y, XYZ->blue_Y, PNG_FP_1, Y) == 0) - return 1; - if (png_muldiv(&XYZ->blue_Z, XYZ->blue_Z, PNG_FP_1, Y) == 0) - return 1; - } - - return 0; -} - -static int -png_colorspace_endpoints_match(const png_xy *xy1, const png_xy *xy2, int delta) -{ - /* Allow an error of +/-0.01 (absolute value) on each chromaticity */ - if (PNG_OUT_OF_RANGE(xy1->whitex, xy2->whitex,delta) || - PNG_OUT_OF_RANGE(xy1->whitey, xy2->whitey,delta) || - PNG_OUT_OF_RANGE(xy1->redx, xy2->redx, delta) || - PNG_OUT_OF_RANGE(xy1->redy, xy2->redy, delta) || - PNG_OUT_OF_RANGE(xy1->greenx, xy2->greenx,delta) || - PNG_OUT_OF_RANGE(xy1->greeny, xy2->greeny,delta) || - PNG_OUT_OF_RANGE(xy1->bluex, xy2->bluex, delta) || - PNG_OUT_OF_RANGE(xy1->bluey, xy2->bluey, delta)) - return 0; - return 1; -} - -/* Added in libpng-1.6.0, a different check for the validity of a set of cHRM - * chunk chromaticities. Earlier checks used to simply look for the overflow - * condition (where the determinant of the matrix to solve for XYZ ends up zero - * because the chromaticity values are not all distinct.) Despite this it is - * theoretically possible to produce chromaticities that are apparently valid - * but that rapidly degrade to invalid, potentially crashing, sets because of - * arithmetic inaccuracies when calculations are performed on them. The new - * check is to round-trip xy -> XYZ -> xy and then check that the result is - * within a small percentage of the original. - */ -static int -png_colorspace_check_xy(png_XYZ *XYZ, const png_xy *xy) -{ - int result; - png_xy xy_test; - - /* As a side-effect this routine also returns the XYZ endpoints. */ - result = png_XYZ_from_xy(XYZ, xy); - if (result != 0) - return result; - - result = png_xy_from_XYZ(&xy_test, XYZ); - if (result != 0) - return result; - - if (png_colorspace_endpoints_match(xy, &xy_test, - 5/*actually, the math is pretty accurate*/) != 0) - return 0; - - /* Too much slip */ - return 1; -} - -/* This is the check going the other way. The XYZ is modified to normalize it - * (another side-effect) and the xy chromaticities are returned. - */ -static int -png_colorspace_check_XYZ(png_xy *xy, png_XYZ *XYZ) -{ - int result; - png_XYZ XYZtemp; - - result = png_XYZ_normalize(XYZ); - if (result != 0) - return result; - - result = png_xy_from_XYZ(xy, XYZ); - if (result != 0) - return result; - - XYZtemp = *XYZ; - return png_colorspace_check_xy(&XYZtemp, xy); -} - -/* Used to check for an endpoint match against sRGB */ -static const png_xy sRGB_xy = /* From ITU-R BT.709-3 */ -{ - /* color x y */ - /* red */ 64000, 33000, - /* green */ 30000, 60000, - /* blue */ 15000, 6000, - /* white */ 31270, 32900 -}; - -static int -png_colorspace_set_xy_and_XYZ(png_const_structrp png_ptr, - png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ, - int preferred) -{ - if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0) - return 0; - - /* The consistency check is performed on the chromaticities; this factors out - * variations because of the normalization (or not) of the end point Y - * values. - */ - if (preferred < 2 && - (colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - { - /* The end points must be reasonably close to any we already have. The - * following allows an error of up to +/-.001 - */ - if (png_colorspace_endpoints_match(xy, &colorspace->end_points_xy, - 100) == 0) - { - colorspace->flags |= PNG_COLORSPACE_INVALID; - png_benign_error(png_ptr, "inconsistent chromaticities"); - return 0; /* failed */ - } - - /* Only overwrite with preferred values */ - if (preferred == 0) - return 1; /* ok, but no change */ - } - - colorspace->end_points_xy = *xy; - colorspace->end_points_XYZ = *XYZ; - colorspace->flags |= PNG_COLORSPACE_HAVE_ENDPOINTS; - - /* The end points are normally quoted to two decimal digits, so allow +/-0.01 - * on this test. - */ - if (png_colorspace_endpoints_match(xy, &sRGB_xy, 1000) != 0) - colorspace->flags |= PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB; - - else - colorspace->flags &= PNG_COLORSPACE_CANCEL( - PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB); - - return 2; /* ok and changed */ -} - -int /* PRIVATE */ -png_colorspace_set_chromaticities(png_const_structrp png_ptr, - png_colorspacerp colorspace, const png_xy *xy, int preferred) -{ - /* We must check the end points to ensure they are reasonable - in the past - * color management systems have crashed as a result of getting bogus - * colorant values, while this isn't the fault of libpng it is the - * responsibility of libpng because PNG carries the bomb and libpng is in a - * position to protect against it. - */ - png_XYZ XYZ; - - switch (png_colorspace_check_xy(&XYZ, xy)) - { - case 0: /* success */ - return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, xy, &XYZ, - preferred); - - case 1: - /* We can't invert the chromaticities so we can't produce value XYZ - * values. Likely as not a color management system will fail too. - */ - colorspace->flags |= PNG_COLORSPACE_INVALID; - png_benign_error(png_ptr, "invalid chromaticities"); - break; - - default: - /* libpng is broken; this should be a warning but if it happens we - * want error reports so for the moment it is an error. - */ - colorspace->flags |= PNG_COLORSPACE_INVALID; - png_error(png_ptr, "internal error checking chromaticities"); - } - - return 0; /* failed */ -} - -int /* PRIVATE */ -png_colorspace_set_endpoints(png_const_structrp png_ptr, - png_colorspacerp colorspace, const png_XYZ *XYZ_in, int preferred) -{ - png_XYZ XYZ = *XYZ_in; - png_xy xy; - - switch (png_colorspace_check_XYZ(&xy, &XYZ)) - { - case 0: - return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, &xy, &XYZ, - preferred); - - case 1: - /* End points are invalid. */ - colorspace->flags |= PNG_COLORSPACE_INVALID; - png_benign_error(png_ptr, "invalid end points"); - break; - - default: - colorspace->flags |= PNG_COLORSPACE_INVALID; - png_error(png_ptr, "internal error checking chromaticities"); - } - - return 0; /* failed */ -} - -#if defined(PNG_sRGB_SUPPORTED) || defined(PNG_iCCP_SUPPORTED) -/* Error message generation */ -static char -png_icc_tag_char(png_uint_32 byte) -{ - byte &= 0xff; - if (byte >= 32 && byte <= 126) - return (char)byte; - else - return '?'; -} - -static void -png_icc_tag_name(char *name, png_uint_32 tag) -{ - name[0] = '\''; - name[1] = png_icc_tag_char(tag >> 24); - name[2] = png_icc_tag_char(tag >> 16); - name[3] = png_icc_tag_char(tag >> 8); - name[4] = png_icc_tag_char(tag ); - name[5] = '\''; -} - -static int -is_ICC_signature_char(png_alloc_size_t it) -{ - return it == 32 || (it >= 48 && it <= 57) || (it >= 65 && it <= 90) || - (it >= 97 && it <= 122); -} - -static int -is_ICC_signature(png_alloc_size_t it) -{ - return is_ICC_signature_char(it >> 24) /* checks all the top bits */ && - is_ICC_signature_char((it >> 16) & 0xff) && - is_ICC_signature_char((it >> 8) & 0xff) && - is_ICC_signature_char(it & 0xff); -} - -static int -png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_charp name, png_alloc_size_t value, png_const_charp reason) -{ - size_t pos; - char message[196]; /* see below for calculation */ - - if (colorspace != NULL) - colorspace->flags |= PNG_COLORSPACE_INVALID; - - pos = png_safecat(message, (sizeof message), 0, "profile '"); /* 9 chars */ - pos = png_safecat(message, pos+79, pos, name); /* Truncate to 79 chars */ - pos = png_safecat(message, (sizeof message), pos, "': "); /* +2 = 90 */ - if (is_ICC_signature(value) != 0) - { - /* So 'value' is at most 4 bytes and the following cast is safe */ - png_icc_tag_name(message+pos, (png_uint_32)value); - pos += 6; /* total +8; less than the else clause */ - message[pos++] = ':'; - message[pos++] = ' '; - } -# ifdef PNG_WARNINGS_SUPPORTED - else - { - char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/ - - pos = png_safecat(message, (sizeof message), pos, - png_format_number(number, number+(sizeof number), - PNG_NUMBER_FORMAT_x, value)); - pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/ - } -# endif - /* The 'reason' is an arbitrary message, allow +79 maximum 195 */ - pos = png_safecat(message, (sizeof message), pos, reason); - PNG_UNUSED(pos) - - /* This is recoverable, but make it unconditionally an app_error on write to - * avoid writing invalid ICC profiles into PNG files (i.e., we handle them - * on read, with a warning, but on write unless the app turns off - * application errors the PNG won't be written.) - */ - png_chunk_report(png_ptr, message, - (colorspace != NULL) ? PNG_CHUNK_ERROR : PNG_CHUNK_WRITE_ERROR); - - return 0; -} -#endif /* sRGB || iCCP */ - -#ifdef PNG_sRGB_SUPPORTED -int /* PRIVATE */ -png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace, - int intent) -{ - /* sRGB sets known gamma, end points and (from the chunk) intent. */ - /* IMPORTANT: these are not necessarily the values found in an ICC profile - * because ICC profiles store values adapted to a D50 environment; it is - * expected that the ICC profile mediaWhitePointTag will be D50; see the - * checks and code elsewhere to understand this better. - * - * These XYZ values, which are accurate to 5dp, produce rgb to gray - * coefficients of (6968,23435,2366), which are reduced (because they add up - * to 32769 not 32768) to (6968,23434,2366). These are the values that - * libpng has traditionally used (and are the best values given the 15bit - * algorithm used by the rgb to gray code.) - */ - static const png_XYZ sRGB_XYZ = /* D65 XYZ (*not* the D50 adapted values!) */ - { - /* color X Y Z */ - /* red */ 41239, 21264, 1933, - /* green */ 35758, 71517, 11919, - /* blue */ 18048, 7219, 95053 - }; - - /* Do nothing if the colorspace is already invalidated. */ - if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0) - return 0; - - /* Check the intent, then check for existing settings. It is valid for the - * PNG file to have cHRM or gAMA chunks along with sRGB, but the values must - * be consistent with the correct values. If, however, this function is - * called below because an iCCP chunk matches sRGB then it is quite - * conceivable that an older app recorded incorrect gAMA and cHRM because of - * an incorrect calculation based on the values in the profile - this does - * *not* invalidate the profile (though it still produces an error, which can - * be ignored.) - */ - if (intent < 0 || intent >= PNG_sRGB_INTENT_LAST) - return png_icc_profile_error(png_ptr, colorspace, "sRGB", - (png_alloc_size_t)intent, "invalid sRGB rendering intent"); - - if ((colorspace->flags & PNG_COLORSPACE_HAVE_INTENT) != 0 && - colorspace->rendering_intent != intent) - return png_icc_profile_error(png_ptr, colorspace, "sRGB", - (png_alloc_size_t)intent, "inconsistent rendering intents"); - - if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0) - { - png_benign_error(png_ptr, "duplicate sRGB information ignored"); - return 0; - } - - /* If the standard sRGB cHRM chunk does not match the one from the PNG file - * warn but overwrite the value with the correct one. - */ - if ((colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0 && - !png_colorspace_endpoints_match(&sRGB_xy, &colorspace->end_points_xy, - 100)) - png_chunk_report(png_ptr, "cHRM chunk does not match sRGB", - PNG_CHUNK_ERROR); - - /* This check is just done for the error reporting - the routine always - * returns true when the 'from' argument corresponds to sRGB (2). - */ - (void)png_colorspace_check_gamma(png_ptr, colorspace, PNG_GAMMA_sRGB_INVERSE, - 2/*from sRGB*/); - - /* intent: bugs in GCC force 'int' to be used as the parameter type. */ - colorspace->rendering_intent = (png_uint_16)intent; - colorspace->flags |= PNG_COLORSPACE_HAVE_INTENT; - - /* endpoints */ - colorspace->end_points_xy = sRGB_xy; - colorspace->end_points_XYZ = sRGB_XYZ; - colorspace->flags |= - (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB); - - /* gamma */ - colorspace->gamma = PNG_GAMMA_sRGB_INVERSE; - colorspace->flags |= PNG_COLORSPACE_HAVE_GAMMA; - - /* Finally record that we have an sRGB profile */ - colorspace->flags |= - (PNG_COLORSPACE_MATCHES_sRGB|PNG_COLORSPACE_FROM_sRGB); - - return 1; /* set */ -} -#endif /* sRGB */ - -#ifdef PNG_iCCP_SUPPORTED -/* Encoded value of D50 as an ICC XYZNumber. From the ICC 2010 spec the value - * is XYZ(0.9642,1.0,0.8249), which scales to: - * - * (63189.8112, 65536, 54060.6464) - */ -static const png_byte D50_nCIEXYZ[12] = - { 0x00, 0x00, 0xf6, 0xd6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x2d }; - -static int /* bool */ -icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_charp name, png_uint_32 profile_length) -{ - if (profile_length < 132) - return png_icc_profile_error(png_ptr, colorspace, name, profile_length, - "too short"); - return 1; -} - -#ifdef PNG_READ_iCCP_SUPPORTED -int /* PRIVATE */ -png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_charp name, png_uint_32 profile_length) -{ - if (!icc_check_length(png_ptr, colorspace, name, profile_length)) - return 0; - - /* This needs to be here because the 'normal' check is in - * png_decompress_chunk, yet this happens after the attempt to - * png_malloc_base the required data. We only need this on read; on write - * the caller supplies the profile buffer so libpng doesn't allocate it. See - * the call to icc_check_length below (the write case). - */ -# ifdef PNG_SET_USER_LIMITS_SUPPORTED - else if (png_ptr->user_chunk_malloc_max > 0 && - png_ptr->user_chunk_malloc_max < profile_length) - return png_icc_profile_error(png_ptr, colorspace, name, profile_length, - "exceeds application limits"); -# elif PNG_USER_CHUNK_MALLOC_MAX > 0 - else if (PNG_USER_CHUNK_MALLOC_MAX < profile_length) - return png_icc_profile_error(png_ptr, colorspace, name, profile_length, - "exceeds libpng limits"); -# else /* !SET_USER_LIMITS */ - /* This will get compiled out on all 32-bit and better systems. */ - else if (PNG_SIZE_MAX < profile_length) - return png_icc_profile_error(png_ptr, colorspace, name, profile_length, - "exceeds system limits"); -# endif /* !SET_USER_LIMITS */ - - return 1; -} -#endif /* READ_iCCP */ - -int /* PRIVATE */ -png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_charp name, png_uint_32 profile_length, - png_const_bytep profile/* first 132 bytes only */, int color_type) -{ - png_uint_32 temp; - - /* Length check; this cannot be ignored in this code because profile_length - * is used later to check the tag table, so even if the profile seems over - * long profile_length from the caller must be correct. The caller can fix - * this up on read or write by just passing in the profile header length. - */ - temp = png_get_uint_32(profile); - if (temp != profile_length) - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "length does not match profile"); - - temp = (png_uint_32) (*(profile+8)); - if (temp > 3 && (profile_length & 3)) - return png_icc_profile_error(png_ptr, colorspace, name, profile_length, - "invalid length"); - - temp = png_get_uint_32(profile+128); /* tag count: 12 bytes/tag */ - if (temp > 357913930 || /* (2^32-4-132)/12: maximum possible tag count */ - profile_length < 132+12*temp) /* truncated tag table */ - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "tag count too large"); - - /* The 'intent' must be valid or we can't store it, ICC limits the intent to - * 16 bits. - */ - temp = png_get_uint_32(profile+64); - if (temp >= 0xffff) /* The ICC limit */ - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "invalid rendering intent"); - - /* This is just a warning because the profile may be valid in future - * versions. - */ - if (temp >= PNG_sRGB_INTENT_LAST) - (void)png_icc_profile_error(png_ptr, NULL, name, temp, - "intent outside defined range"); - - /* At this point the tag table can't be checked because it hasn't necessarily - * been loaded; however, various header fields can be checked. These checks - * are for values permitted by the PNG spec in an ICC profile; the PNG spec - * restricts the profiles that can be passed in an iCCP chunk (they must be - * appropriate to processing PNG data!) - */ - - /* Data checks (could be skipped). These checks must be independent of the - * version number; however, the version number doesn't accomodate changes in - * the header fields (just the known tags and the interpretation of the - * data.) - */ - temp = png_get_uint_32(profile+36); /* signature 'ascp' */ - if (temp != 0x61637370) - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "invalid signature"); - - /* Currently the PCS illuminant/adopted white point (the computational - * white point) are required to be D50, - * however the profile contains a record of the illuminant so perhaps ICC - * expects to be able to change this in the future (despite the rationale in - * the introduction for using a fixed PCS adopted white.) Consequently the - * following is just a warning. - */ - if (memcmp(profile+68, D50_nCIEXYZ, 12) != 0) - (void)png_icc_profile_error(png_ptr, NULL, name, 0/*no tag value*/, - "PCS illuminant is not D50"); - - /* The PNG spec requires this: - * "If the iCCP chunk is present, the image samples conform to the colour - * space represented by the embedded ICC profile as defined by the - * International Color Consortium [ICC]. The colour space of the ICC profile - * shall be an RGB colour space for colour images (PNG colour types 2, 3, and - * 6), or a greyscale colour space for greyscale images (PNG colour types 0 - * and 4)." - * - * This checking code ensures the embedded profile (on either read or write) - * conforms to the specification requirements. Notice that an ICC 'gray' - * color-space profile contains the information to transform the monochrome - * data to XYZ or L*a*b (according to which PCS the profile uses) and this - * should be used in preference to the standard libpng K channel replication - * into R, G and B channels. - * - * Previously it was suggested that an RGB profile on grayscale data could be - * handled. However it it is clear that using an RGB profile in this context - * must be an error - there is no specification of what it means. Thus it is - * almost certainly more correct to ignore the profile. - */ - temp = png_get_uint_32(profile+16); /* data colour space field */ - switch (temp) - { - case 0x52474220: /* 'RGB ' */ - if ((color_type & PNG_COLOR_MASK_COLOR) == 0) - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "RGB color space not permitted on grayscale PNG"); - break; - - case 0x47524159: /* 'GRAY' */ - if ((color_type & PNG_COLOR_MASK_COLOR) != 0) - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "Gray color space not permitted on RGB PNG"); - break; - - default: - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "invalid ICC profile color space"); - } - - /* It is up to the application to check that the profile class matches the - * application requirements; the spec provides no guidance, but it's pretty - * weird if the profile is not scanner ('scnr'), monitor ('mntr'), printer - * ('prtr') or 'spac' (for generic color spaces). Issue a warning in these - * cases. Issue an error for device link or abstract profiles - these don't - * contain the records necessary to transform the color-space to anything - * other than the target device (and not even that for an abstract profile). - * Profiles of these classes may not be embedded in images. - */ - temp = png_get_uint_32(profile+12); /* profile/device class */ - switch (temp) - { - case 0x73636e72: /* 'scnr' */ - case 0x6d6e7472: /* 'mntr' */ - case 0x70727472: /* 'prtr' */ - case 0x73706163: /* 'spac' */ - /* All supported */ - break; - - case 0x61627374: /* 'abst' */ - /* May not be embedded in an image */ - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "invalid embedded Abstract ICC profile"); - - case 0x6c696e6b: /* 'link' */ - /* DeviceLink profiles cannot be interpreted in a non-device specific - * fashion, if an app uses the AToB0Tag in the profile the results are - * undefined unless the result is sent to the intended device, - * therefore a DeviceLink profile should not be found embedded in a - * PNG. - */ - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "unexpected DeviceLink ICC profile class"); - - case 0x6e6d636c: /* 'nmcl' */ - /* A NamedColor profile is also device specific, however it doesn't - * contain an AToB0 tag that is open to misinterpretation. Almost - * certainly it will fail the tests below. - */ - (void)png_icc_profile_error(png_ptr, NULL, name, temp, - "unexpected NamedColor ICC profile class"); - break; - - default: - /* To allow for future enhancements to the profile accept unrecognized - * profile classes with a warning, these then hit the test below on the - * tag content to ensure they are backward compatible with one of the - * understood profiles. - */ - (void)png_icc_profile_error(png_ptr, NULL, name, temp, - "unrecognized ICC profile class"); - break; - } - - /* For any profile other than a device link one the PCS must be encoded - * either in XYZ or Lab. - */ - temp = png_get_uint_32(profile+20); - switch (temp) - { - case 0x58595a20: /* 'XYZ ' */ - case 0x4c616220: /* 'Lab ' */ - break; - - default: - return png_icc_profile_error(png_ptr, colorspace, name, temp, - "unexpected ICC PCS encoding"); - } - - return 1; -} - -int /* PRIVATE */ -png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_charp name, png_uint_32 profile_length, - png_const_bytep profile /* header plus whole tag table */) -{ - png_uint_32 tag_count = png_get_uint_32(profile+128); - png_uint_32 itag; - png_const_bytep tag = profile+132; /* The first tag */ - - /* First scan all the tags in the table and add bits to the icc_info value - * (temporarily in 'tags'). - */ - for (itag=0; itag < tag_count; ++itag, tag += 12) - { - png_uint_32 tag_id = png_get_uint_32(tag+0); - png_uint_32 tag_start = png_get_uint_32(tag+4); /* must be aligned */ - png_uint_32 tag_length = png_get_uint_32(tag+8);/* not padded */ - - /* The ICC specification does not exclude zero length tags, therefore the - * start might actually be anywhere if there is no data, but this would be - * a clear abuse of the intent of the standard so the start is checked for - * being in range. All defined tag types have an 8 byte header - a 4 byte - * type signature then 0. - */ - - /* This is a hard error; potentially it can cause read outside the - * profile. - */ - if (tag_start > profile_length || tag_length > profile_length - tag_start) - return png_icc_profile_error(png_ptr, colorspace, name, tag_id, - "ICC profile tag outside profile"); - - if ((tag_start & 3) != 0) - { - /* CNHP730S.icc shipped with Microsoft Windows 64 violates this; it is - * only a warning here because libpng does not care about the - * alignment. - */ - (void)png_icc_profile_error(png_ptr, NULL, name, tag_id, - "ICC profile tag start not a multiple of 4"); - } - } - - return 1; /* success, maybe with warnings */ -} - -#ifdef PNG_sRGB_SUPPORTED -#if PNG_sRGB_PROFILE_CHECKS >= 0 -/* Information about the known ICC sRGB profiles */ -static const struct -{ - png_uint_32 adler, crc, length; - png_uint_32 md5[4]; - png_byte have_md5; - png_byte is_broken; - png_uint_16 intent; - -# define PNG_MD5(a,b,c,d) { a, b, c, d }, (a!=0)||(b!=0)||(c!=0)||(d!=0) -# define PNG_ICC_CHECKSUM(adler, crc, md5, intent, broke, date, length, fname)\ - { adler, crc, length, md5, broke, intent }, - -} png_sRGB_checks[] = -{ - /* This data comes from contrib/tools/checksum-icc run on downloads of - * all four ICC sRGB profiles from www.color.org. - */ - /* adler32, crc32, MD5[4], intent, date, length, file-name */ - PNG_ICC_CHECKSUM(0x0a3fd9f6, 0x3b8772b9, - PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0, - "2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc") - - /* ICC sRGB v2 perceptual no black-compensation: */ - PNG_ICC_CHECKSUM(0x4909e5e1, 0x427ebb21, - PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0, - "2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc") - - PNG_ICC_CHECKSUM(0xfd2144a1, 0x306fd8ae, - PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0, - "2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc") - - /* ICC sRGB v4 perceptual */ - PNG_ICC_CHECKSUM(0x209c35d2, 0xbbef7812, - PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0, - "2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc") - - /* The following profiles have no known MD5 checksum. If there is a match - * on the (empty) MD5 the other fields are used to attempt a match and - * a warning is produced. The first two of these profiles have a 'cprt' tag - * which suggests that they were also made by Hewlett Packard. - */ - PNG_ICC_CHECKSUM(0xa054d762, 0x5d5129ce, - PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0, - "2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc") - - /* This is a 'mntr' (display) profile with a mediaWhitePointTag that does not - * match the D50 PCS illuminant in the header (it is in fact the D65 values, - * so the white point is recorded as the un-adapted value.) The profiles - * below only differ in one byte - the intent - and are basically the same as - * the previous profile except for the mediaWhitePointTag error and a missing - * chromaticAdaptationTag. - */ - PNG_ICC_CHECKSUM(0xf784f3fb, 0x182ea552, - PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/, - "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual") - - PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d, - PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/, - "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative") -}; - -static int -png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr, - png_const_bytep profile, uLong adler) -{ - /* The quick check is to verify just the MD5 signature and trust the - * rest of the data. Because the profile has already been verified for - * correctness this is safe. png_colorspace_set_sRGB will check the 'intent' - * field too, so if the profile has been edited with an intent not defined - * by sRGB (but maybe defined by a later ICC specification) the read of - * the profile will fail at that point. - */ - - png_uint_32 length = 0; - png_uint_32 intent = 0x10000; /* invalid */ -#if PNG_sRGB_PROFILE_CHECKS > 1 - uLong crc = 0; /* the value for 0 length data */ -#endif - unsigned int i; - -#ifdef PNG_SET_OPTION_SUPPORTED - /* First see if PNG_SKIP_sRGB_CHECK_PROFILE has been set to "on" */ - if (((png_ptr->options >> PNG_SKIP_sRGB_CHECK_PROFILE) & 3) == - PNG_OPTION_ON) - return 0; -#endif - - for (i=0; i < (sizeof png_sRGB_checks) / (sizeof png_sRGB_checks[0]); ++i) - { - if (png_get_uint_32(profile+84) == png_sRGB_checks[i].md5[0] && - png_get_uint_32(profile+88) == png_sRGB_checks[i].md5[1] && - png_get_uint_32(profile+92) == png_sRGB_checks[i].md5[2] && - png_get_uint_32(profile+96) == png_sRGB_checks[i].md5[3]) - { - /* This may be one of the old HP profiles without an MD5, in that - * case we can only use the length and Adler32 (note that these - * are not used by default if there is an MD5!) - */ -# if PNG_sRGB_PROFILE_CHECKS == 0 - if (png_sRGB_checks[i].have_md5 != 0) - return 1+png_sRGB_checks[i].is_broken; -# endif - - /* Profile is unsigned or more checks have been configured in. */ - if (length == 0) - { - length = png_get_uint_32(profile); - intent = png_get_uint_32(profile+64); - } - - /* Length *and* intent must match */ - if (length == (png_uint_32) png_sRGB_checks[i].length && - intent == (png_uint_32) png_sRGB_checks[i].intent) - { - /* Now calculate the adler32 if not done already. */ - if (adler == 0) - { - adler = adler32(0, NULL, 0); - adler = adler32(adler, profile, length); - } - - if (adler == png_sRGB_checks[i].adler) - { - /* These basic checks suggest that the data has not been - * modified, but if the check level is more than 1 perform - * our own crc32 checksum on the data. - */ -# if PNG_sRGB_PROFILE_CHECKS > 1 - if (crc == 0) - { - crc = crc32(0, NULL, 0); - crc = crc32(crc, profile, length); - } - - /* So this check must pass for the 'return' below to happen. - */ - if (crc == png_sRGB_checks[i].crc) -# endif - { - if (png_sRGB_checks[i].is_broken != 0) - { - /* These profiles are known to have bad data that may cause - * problems if they are used, therefore attempt to - * discourage their use, skip the 'have_md5' warning below, - * which is made irrelevant by this error. - */ - png_chunk_report(png_ptr, "known incorrect sRGB profile", - PNG_CHUNK_ERROR); - } - - /* Warn that this being done; this isn't even an error since - * the profile is perfectly valid, but it would be nice if - * people used the up-to-date ones. - */ - else if (png_sRGB_checks[i].have_md5 == 0) - { - png_chunk_report(png_ptr, - "out-of-date sRGB profile with no signature", - PNG_CHUNK_WARNING); - } - - return 1+png_sRGB_checks[i].is_broken; - } - } - -# if PNG_sRGB_PROFILE_CHECKS > 0 - /* The signature matched, but the profile had been changed in some - * way. This probably indicates a data error or uninformed hacking. - * Fall through to "no match". - */ - png_chunk_report(png_ptr, - "Not recognizing known sRGB profile that has been edited", - PNG_CHUNK_WARNING); - break; -# endif - } - } - } - - return 0; /* no match */ -} - -void /* PRIVATE */ -png_icc_set_sRGB(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_const_bytep profile, uLong adler) -{ - /* Is this profile one of the known ICC sRGB profiles? If it is, just set - * the sRGB information. - */ - if (png_compare_ICC_profile_with_sRGB(png_ptr, profile, adler) != 0) - (void)png_colorspace_set_sRGB(png_ptr, colorspace, - (int)/*already checked*/png_get_uint_32(profile+64)); -} -#endif /* PNG_sRGB_PROFILE_CHECKS >= 0 */ -#endif /* sRGB */ - -int /* PRIVATE */ -png_colorspace_set_ICC(png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_charp name, png_uint_32 profile_length, png_const_bytep profile, - int color_type) -{ - if ((colorspace->flags & PNG_COLORSPACE_INVALID) != 0) - return 0; - - if (icc_check_length(png_ptr, colorspace, name, profile_length) != 0 && - png_icc_check_header(png_ptr, colorspace, name, profile_length, profile, - color_type) != 0 && - png_icc_check_tag_table(png_ptr, colorspace, name, profile_length, - profile) != 0) - { -# if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0 - /* If no sRGB support, don't try storing sRGB information */ - png_icc_set_sRGB(png_ptr, colorspace, profile, 0); -# endif - return 1; - } - - /* Failure case */ - return 0; -} -#endif /* iCCP */ - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -void /* PRIVATE */ -png_colorspace_set_rgb_coefficients(png_structrp png_ptr) -{ - /* Set the rgb_to_gray coefficients from the colorspace. */ - if (png_ptr->rgb_to_gray_coefficients_set == 0 && - (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - { - /* png_set_background has not been called, get the coefficients from the Y - * values of the colorspace colorants. - */ - png_fixed_point r = png_ptr->colorspace.end_points_XYZ.red_Y; - png_fixed_point g = png_ptr->colorspace.end_points_XYZ.green_Y; - png_fixed_point b = png_ptr->colorspace.end_points_XYZ.blue_Y; - png_fixed_point total = r+g+b; - - if (total > 0 && - r >= 0 && png_muldiv(&r, r, 32768, total) && r >= 0 && r <= 32768 && - g >= 0 && png_muldiv(&g, g, 32768, total) && g >= 0 && g <= 32768 && - b >= 0 && png_muldiv(&b, b, 32768, total) && b >= 0 && b <= 32768 && - r+g+b <= 32769) - { - /* We allow 0 coefficients here. r+g+b may be 32769 if two or - * all of the coefficients were rounded up. Handle this by - * reducing the *largest* coefficient by 1; this matches the - * approach used for the default coefficients in pngrtran.c - */ - int add = 0; - - if (r+g+b > 32768) - add = -1; - else if (r+g+b < 32768) - add = 1; - - if (add != 0) - { - if (g >= r && g >= b) - g += add; - else if (r >= g && r >= b) - r += add; - else - b += add; - } - - /* Check for an internal error. */ - if (r+g+b != 32768) - png_error(png_ptr, - "internal error handling cHRM coefficients"); - - else - { - png_ptr->rgb_to_gray_red_coeff = (png_uint_16)r; - png_ptr->rgb_to_gray_green_coeff = (png_uint_16)g; - } - } - - /* This is a png_error at present even though it could be ignored - - * it should never happen, but it is important that if it does, the - * bug is fixed. - */ - else - png_error(png_ptr, "internal error handling cHRM->XYZ"); - } -} -#endif /* READ_RGB_TO_GRAY */ - -#endif /* COLORSPACE */ - -#ifdef __GNUC__ -/* This exists solely to work round a warning from GNU C. */ -static int /* PRIVATE */ -png_gt(size_t a, size_t b) -{ - return a > b; -} -#else -# define png_gt(a,b) ((a) > (b)) -#endif - -void /* PRIVATE */ -png_check_IHDR(png_const_structrp png_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, - int filter_type) -{ - int error = 0; - - /* Check for width and height valid values */ - if (width == 0) - { - png_warning(png_ptr, "Image width is zero in IHDR"); - error = 1; - } - - if (width > PNG_UINT_31_MAX) - { - png_warning(png_ptr, "Invalid image width in IHDR"); - error = 1; - } - - if (png_gt(((width + 7) & (~7U)), - ((PNG_SIZE_MAX - - 48 /* big_row_buf hack */ - - 1) /* filter byte */ - / 8) /* 8-byte RGBA pixels */ - - 1)) /* extra max_pixel_depth pad */ - { - /* The size of the row must be within the limits of this architecture. - * Because the read code can perform arbitrary transformations the - * maximum size is checked here. Because the code in png_read_start_row - * adds extra space "for safety's sake" in several places a conservative - * limit is used here. - * - * NOTE: it would be far better to check the size that is actually used, - * but the effect in the real world is minor and the changes are more - * extensive, therefore much more dangerous and much more difficult to - * write in a way that avoids compiler warnings. - */ - png_warning(png_ptr, "Image width is too large for this architecture"); - error = 1; - } - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (width > png_ptr->user_width_max) -#else - if (width > PNG_USER_WIDTH_MAX) -#endif - { - png_warning(png_ptr, "Image width exceeds user limit in IHDR"); - error = 1; - } - - if (height == 0) - { - png_warning(png_ptr, "Image height is zero in IHDR"); - error = 1; - } - - if (height > PNG_UINT_31_MAX) - { - png_warning(png_ptr, "Invalid image height in IHDR"); - error = 1; - } - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (height > png_ptr->user_height_max) -#else - if (height > PNG_USER_HEIGHT_MAX) -#endif - { - png_warning(png_ptr, "Image height exceeds user limit in IHDR"); - error = 1; - } - - /* Check other values */ - if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 && - bit_depth != 8 && bit_depth != 16) - { - png_warning(png_ptr, "Invalid bit depth in IHDR"); - error = 1; - } - - if (color_type < 0 || color_type == 1 || - color_type == 5 || color_type > 6) - { - png_warning(png_ptr, "Invalid color type in IHDR"); - error = 1; - } - - if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) || - ((color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_GRAY_ALPHA || - color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8)) - { - png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR"); - error = 1; - } - - if (interlace_type >= PNG_INTERLACE_LAST) - { - png_warning(png_ptr, "Unknown interlace method in IHDR"); - error = 1; - } - - if (compression_type != PNG_COMPRESSION_TYPE_BASE) - { - png_warning(png_ptr, "Unknown compression method in IHDR"); - error = 1; - } - -#ifdef PNG_MNG_FEATURES_SUPPORTED - /* Accept filter_method 64 (intrapixel differencing) only if - * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and - * 2. Libpng did not read a PNG signature (this filter_method is only - * used in PNG datastreams that are embedded in MNG datastreams) and - * 3. The application called png_permit_mng_features with a mask that - * included PNG_FLAG_MNG_FILTER_64 and - * 4. The filter_method is 64 and - * 5. The color_type is RGB or RGBA - */ - if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) != 0 && - png_ptr->mng_features_permitted != 0) - png_warning(png_ptr, "MNG features are not allowed in a PNG datastream"); - - if (filter_type != PNG_FILTER_TYPE_BASE) - { - if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) != 0 && - (filter_type == PNG_INTRAPIXEL_DIFFERENCING) && - ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) && - (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_RGB_ALPHA))) - { - png_warning(png_ptr, "Unknown filter method in IHDR"); - error = 1; - } - - if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) != 0) - { - png_warning(png_ptr, "Invalid filter method in IHDR"); - error = 1; - } - } - -#else - if (filter_type != PNG_FILTER_TYPE_BASE) - { - png_warning(png_ptr, "Unknown filter method in IHDR"); - error = 1; - } -#endif - - if (error == 1) - png_error(png_ptr, "Invalid IHDR data"); -} - -#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED) -/* ASCII to fp functions */ -/* Check an ASCII formated floating point value, see the more detailed - * comments in pngpriv.h - */ -/* The following is used internally to preserve the sticky flags */ -#define png_fp_add(state, flags) ((state) |= (flags)) -#define png_fp_set(state, value) ((state) = (value) | ((state) & PNG_FP_STICKY)) - -int /* PRIVATE */ -png_check_fp_number(png_const_charp string, png_size_t size, int *statep, - png_size_tp whereami) -{ - int state = *statep; - png_size_t i = *whereami; - - while (i < size) - { - int type; - /* First find the type of the next character */ - switch (string[i]) - { - case 43: type = PNG_FP_SAW_SIGN; break; - case 45: type = PNG_FP_SAW_SIGN + PNG_FP_NEGATIVE; break; - case 46: type = PNG_FP_SAW_DOT; break; - case 48: type = PNG_FP_SAW_DIGIT; break; - case 49: case 50: case 51: case 52: - case 53: case 54: case 55: case 56: - case 57: type = PNG_FP_SAW_DIGIT + PNG_FP_NONZERO; break; - case 69: - case 101: type = PNG_FP_SAW_E; break; - default: goto PNG_FP_End; - } - - /* Now deal with this type according to the current - * state, the type is arranged to not overlap the - * bits of the PNG_FP_STATE. - */ - switch ((state & PNG_FP_STATE) + (type & PNG_FP_SAW_ANY)) - { - case PNG_FP_INTEGER + PNG_FP_SAW_SIGN: - if ((state & PNG_FP_SAW_ANY) != 0) - goto PNG_FP_End; /* not a part of the number */ - - png_fp_add(state, type); - break; - - case PNG_FP_INTEGER + PNG_FP_SAW_DOT: - /* Ok as trailer, ok as lead of fraction. */ - if ((state & PNG_FP_SAW_DOT) != 0) /* two dots */ - goto PNG_FP_End; - - else if ((state & PNG_FP_SAW_DIGIT) != 0) /* trailing dot? */ - png_fp_add(state, type); - - else - png_fp_set(state, PNG_FP_FRACTION | type); - - break; - - case PNG_FP_INTEGER + PNG_FP_SAW_DIGIT: - if ((state & PNG_FP_SAW_DOT) != 0) /* delayed fraction */ - png_fp_set(state, PNG_FP_FRACTION | PNG_FP_SAW_DOT); - - png_fp_add(state, type | PNG_FP_WAS_VALID); - - break; - - case PNG_FP_INTEGER + PNG_FP_SAW_E: - if ((state & PNG_FP_SAW_DIGIT) == 0) - goto PNG_FP_End; - - png_fp_set(state, PNG_FP_EXPONENT); - - break; - - /* case PNG_FP_FRACTION + PNG_FP_SAW_SIGN: - goto PNG_FP_End; ** no sign in fraction */ - - /* case PNG_FP_FRACTION + PNG_FP_SAW_DOT: - goto PNG_FP_End; ** Because SAW_DOT is always set */ - - case PNG_FP_FRACTION + PNG_FP_SAW_DIGIT: - png_fp_add(state, type | PNG_FP_WAS_VALID); - break; - - case PNG_FP_FRACTION + PNG_FP_SAW_E: - /* This is correct because the trailing '.' on an - * integer is handled above - so we can only get here - * with the sequence ".E" (with no preceding digits). - */ - if ((state & PNG_FP_SAW_DIGIT) == 0) - goto PNG_FP_End; - - png_fp_set(state, PNG_FP_EXPONENT); - - break; - - case PNG_FP_EXPONENT + PNG_FP_SAW_SIGN: - if ((state & PNG_FP_SAW_ANY) != 0) - goto PNG_FP_End; /* not a part of the number */ - - png_fp_add(state, PNG_FP_SAW_SIGN); - - break; - - /* case PNG_FP_EXPONENT + PNG_FP_SAW_DOT: - goto PNG_FP_End; */ - - case PNG_FP_EXPONENT + PNG_FP_SAW_DIGIT: - png_fp_add(state, PNG_FP_SAW_DIGIT | PNG_FP_WAS_VALID); - - break; - - /* case PNG_FP_EXPONEXT + PNG_FP_SAW_E: - goto PNG_FP_End; */ - - default: goto PNG_FP_End; /* I.e. break 2 */ - } - - /* The character seems ok, continue. */ - ++i; - } - -PNG_FP_End: - /* Here at the end, update the state and return the correct - * return code. - */ - *statep = state; - *whereami = i; - - return (state & PNG_FP_SAW_DIGIT) != 0; -} - - -/* The same but for a complete string. */ -int -png_check_fp_string(png_const_charp string, png_size_t size) -{ - int state=0; - png_size_t char_index=0; - - if (png_check_fp_number(string, size, &state, &char_index) != 0 && - (char_index == size || string[char_index] == 0)) - return state /* must be non-zero - see above */; - - return 0; /* i.e. fail */ -} -#endif /* pCAL || sCAL */ - -#ifdef PNG_sCAL_SUPPORTED -# ifdef PNG_FLOATING_POINT_SUPPORTED -/* Utility used below - a simple accurate power of ten from an integral - * exponent. - */ -static double -png_pow10(int power) -{ - int recip = 0; - double d = 1; - - /* Handle negative exponent with a reciprocal at the end because - * 10 is exact whereas .1 is inexact in base 2 - */ - if (power < 0) - { - if (power < DBL_MIN_10_EXP) return 0; - recip = 1; power = -power; - } - - if (power > 0) - { - /* Decompose power bitwise. */ - double mult = 10; - do - { - if (power & 1) d *= mult; - mult *= mult; - power >>= 1; - } - while (power > 0); - - if (recip != 0) d = 1/d; - } - /* else power is 0 and d is 1 */ - - return d; -} - -/* Function to format a floating point value in ASCII with a given - * precision. - */ -#if GCC_STRICT_OVERFLOW -#pragma GCC diagnostic push -/* The problem arises below with exp_b10, which can never overflow because it - * comes, originally, from frexp and is therefore limited to a range which is - * typically +/-710 (log2(DBL_MAX)/log2(DBL_MIN)). - */ -#pragma GCC diagnostic warning "-Wstrict-overflow=2" -#endif /* GCC_STRICT_OVERFLOW */ -void /* PRIVATE */ -png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size, - double fp, unsigned int precision) -{ - /* We use standard functions from math.h, but not printf because - * that would require stdio. The caller must supply a buffer of - * sufficient size or we will png_error. The tests on size and - * the space in ascii[] consumed are indicated below. - */ - if (precision < 1) - precision = DBL_DIG; - - /* Enforce the limit of the implementation precision too. */ - if (precision > DBL_DIG+1) - precision = DBL_DIG+1; - - /* Basic sanity checks */ - if (size >= precision+5) /* See the requirements below. */ - { - if (fp < 0) - { - fp = -fp; - *ascii++ = 45; /* '-' PLUS 1 TOTAL 1 */ - --size; - } - - if (fp >= DBL_MIN && fp <= DBL_MAX) - { - int exp_b10; /* A base 10 exponent */ - double base; /* 10^exp_b10 */ - - /* First extract a base 10 exponent of the number, - * the calculation below rounds down when converting - * from base 2 to base 10 (multiply by log10(2) - - * 0.3010, but 77/256 is 0.3008, so exp_b10 needs to - * be increased. Note that the arithmetic shift - * performs a floor() unlike C arithmetic - using a - * C multiply would break the following for negative - * exponents. - */ - (void)frexp(fp, &exp_b10); /* exponent to base 2 */ - - exp_b10 = (exp_b10 * 77) >> 8; /* <= exponent to base 10 */ - - /* Avoid underflow here. */ - base = png_pow10(exp_b10); /* May underflow */ - - while (base < DBL_MIN || base < fp) - { - /* And this may overflow. */ - double test = png_pow10(exp_b10+1); - - if (test <= DBL_MAX) - { - ++exp_b10; base = test; - } - - else - break; - } - - /* Normalize fp and correct exp_b10, after this fp is in the - * range [.1,1) and exp_b10 is both the exponent and the digit - * *before* which the decimal point should be inserted - * (starting with 0 for the first digit). Note that this - * works even if 10^exp_b10 is out of range because of the - * test on DBL_MAX above. - */ - fp /= base; - while (fp >= 1) - { - fp /= 10; ++exp_b10; - } - - /* Because of the code above fp may, at this point, be - * less than .1, this is ok because the code below can - * handle the leading zeros this generates, so no attempt - * is made to correct that here. - */ - - { - unsigned int czero, clead, cdigits; - char exponent[10]; - - /* Allow up to two leading zeros - this will not lengthen - * the number compared to using E-n. - */ - if (exp_b10 < 0 && exp_b10 > -3) /* PLUS 3 TOTAL 4 */ - { - czero = 0U-exp_b10; /* PLUS 2 digits: TOTAL 3 */ - exp_b10 = 0; /* Dot added below before first output. */ - } - else - czero = 0; /* No zeros to add */ - - /* Generate the digit list, stripping trailing zeros and - * inserting a '.' before a digit if the exponent is 0. - */ - clead = czero; /* Count of leading zeros */ - cdigits = 0; /* Count of digits in list. */ - - do - { - double d; - - fp *= 10; - /* Use modf here, not floor and subtract, so that - * the separation is done in one step. At the end - * of the loop don't break the number into parts so - * that the final digit is rounded. - */ - if (cdigits+czero+1 < precision+clead) - fp = modf(fp, &d); - - else - { - d = floor(fp + .5); - - if (d > 9) - { - /* Rounding up to 10, handle that here. */ - if (czero > 0) - { - --czero; d = 1; - if (cdigits == 0) --clead; - } - else - { - while (cdigits > 0 && d > 9) - { - int ch = *--ascii; - - if (exp_b10 != (-1)) - ++exp_b10; - - else if (ch == 46) - { - ch = *--ascii; ++size; - /* Advance exp_b10 to '1', so that the - * decimal point happens after the - * previous digit. - */ - exp_b10 = 1; - } - - --cdigits; - d = ch - 47; /* I.e. 1+(ch-48) */ - } - - /* Did we reach the beginning? If so adjust the - * exponent but take into account the leading - * decimal point. - */ - if (d > 9) /* cdigits == 0 */ - { - if (exp_b10 == (-1)) - { - /* Leading decimal point (plus zeros?), if - * we lose the decimal point here it must - * be reentered below. - */ - int ch = *--ascii; - - if (ch == 46) - { - ++size; exp_b10 = 1; - } - - /* Else lost a leading zero, so 'exp_b10' is - * still ok at (-1) - */ - } - else - ++exp_b10; - - /* In all cases we output a '1' */ - d = 1; - } - } - } - fp = 0; /* Guarantees termination below. */ - } - - if (d == 0) - { - ++czero; - if (cdigits == 0) ++clead; - } - else - { - /* Included embedded zeros in the digit count. */ - cdigits += czero - clead; - clead = 0; - - while (czero > 0) - { - /* exp_b10 == (-1) means we just output the decimal - * place - after the DP don't adjust 'exp_b10' any - * more! - */ - if (exp_b10 != (-1)) - { - if (exp_b10 == 0) - { - *ascii++ = 46; --size; - } - /* PLUS 1: TOTAL 4 */ - --exp_b10; - } - *ascii++ = 48; --czero; - } - - if (exp_b10 != (-1)) - { - if (exp_b10 == 0) - { - *ascii++ = 46; --size; /* counted above */ - } - - --exp_b10; - } - *ascii++ = (char)(48 + (int)d); ++cdigits; - } - } - while (cdigits+czero < precision+clead && fp > DBL_MIN); - - /* The total output count (max) is now 4+precision */ - - /* Check for an exponent, if we don't need one we are - * done and just need to terminate the string. At - * this point exp_b10==(-1) is effectively a flag - it got - * to '-1' because of the decrement after outputting - * the decimal point above (the exponent required is - * *not* -1!) - */ - if (exp_b10 >= (-1) && exp_b10 <= 2) - { - /* The following only happens if we didn't output the - * leading zeros above for negative exponent, so this - * doesn't add to the digit requirement. Note that the - * two zeros here can only be output if the two leading - * zeros were *not* output, so this doesn't increase - * the output count. - */ - while (exp_b10-- > 0) *ascii++ = 48; - - *ascii = 0; - - /* Total buffer requirement (including the '\0') is - * 5+precision - see check at the start. - */ - return; - } - - /* Here if an exponent is required, adjust size for - * the digits we output but did not count. The total - * digit output here so far is at most 1+precision - no - * decimal point and no leading or trailing zeros have - * been output. - */ - size -= cdigits; - - *ascii++ = 69; --size; /* 'E': PLUS 1 TOTAL 2+precision */ - - /* The following use of an unsigned temporary avoids ambiguities in - * the signed arithmetic on exp_b10 and permits GCC at least to do - * better optimization. - */ - { - unsigned int uexp_b10; - - if (exp_b10 < 0) - { - *ascii++ = 45; --size; /* '-': PLUS 1 TOTAL 3+precision */ - uexp_b10 = 0U-exp_b10; - } - - else - uexp_b10 = 0U+exp_b10; - - cdigits = 0; - - while (uexp_b10 > 0) - { - exponent[cdigits++] = (char)(48 + uexp_b10 % 10); - uexp_b10 /= 10; - } - } - - /* Need another size check here for the exponent digits, so - * this need not be considered above. - */ - if (size > cdigits) - { - while (cdigits > 0) *ascii++ = exponent[--cdigits]; - - *ascii = 0; - - return; - } - } - } - else if (!(fp >= DBL_MIN)) - { - *ascii++ = 48; /* '0' */ - *ascii = 0; - return; - } - else - { - *ascii++ = 105; /* 'i' */ - *ascii++ = 110; /* 'n' */ - *ascii++ = 102; /* 'f' */ - *ascii = 0; - return; - } - } - - /* Here on buffer too small. */ - png_error(png_ptr, "ASCII conversion buffer too small"); -} -#if GCC_STRICT_OVERFLOW -#pragma GCC diagnostic pop -#endif /* GCC_STRICT_OVERFLOW */ - -# endif /* FLOATING_POINT */ - -# ifdef PNG_FIXED_POINT_SUPPORTED -/* Function to format a fixed point value in ASCII. - */ -void /* PRIVATE */ -png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii, - png_size_t size, png_fixed_point fp) -{ - /* Require space for 10 decimal digits, a decimal point, a minus sign and a - * trailing \0, 13 characters: - */ - if (size > 12) - { - png_uint_32 num; - - /* Avoid overflow here on the minimum integer. */ - if (fp < 0) - { - *ascii++ = 45; num = (png_uint_32)(-fp); - } - else - num = (png_uint_32)fp; - - if (num <= 0x80000000) /* else overflowed */ - { - unsigned int ndigits = 0, first = 16 /* flag value */; - char digits[10]; - - while (num) - { - /* Split the low digit off num: */ - unsigned int tmp = num/10; - num -= tmp*10; - digits[ndigits++] = (char)(48 + num); - /* Record the first non-zero digit, note that this is a number - * starting at 1, it's not actually the array index. - */ - if (first == 16 && num > 0) - first = ndigits; - num = tmp; - } - - if (ndigits > 0) - { - while (ndigits > 5) *ascii++ = digits[--ndigits]; - /* The remaining digits are fractional digits, ndigits is '5' or - * smaller at this point. It is certainly not zero. Check for a - * non-zero fractional digit: - */ - if (first <= 5) - { - unsigned int i; - *ascii++ = 46; /* decimal point */ - /* ndigits may be <5 for small numbers, output leading zeros - * then ndigits digits to first: - */ - i = 5; - while (ndigits < i) - { - *ascii++ = 48; --i; - } - while (ndigits >= first) *ascii++ = digits[--ndigits]; - /* Don't output the trailing zeros! */ - } - } - else - *ascii++ = 48; - - /* And null terminate the string: */ - *ascii = 0; - return; - } - } - - /* Here on buffer too small. */ - png_error(png_ptr, "ASCII conversion buffer too small"); -} -# endif /* FIXED_POINT */ -#endif /* SCAL */ - -#if defined(PNG_FLOATING_POINT_SUPPORTED) && \ - !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \ - (defined(PNG_gAMA_SUPPORTED) || defined(PNG_cHRM_SUPPORTED) || \ - defined(PNG_sCAL_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \ - (defined(PNG_sCAL_SUPPORTED) && \ - defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)) -png_fixed_point -png_fixed(png_const_structrp png_ptr, double fp, png_const_charp text) -{ - double r = floor(100000 * fp + .5); - - if (r > 2147483647. || r < -2147483648.) - png_fixed_error(png_ptr, text); - -# ifndef PNG_ERROR_TEXT_SUPPORTED - PNG_UNUSED(text) -# endif - - return (png_fixed_point)r; -} -#endif - -#if defined(PNG_GAMMA_SUPPORTED) || defined(PNG_COLORSPACE_SUPPORTED) ||\ - defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED) -/* muldiv functions */ -/* This API takes signed arguments and rounds the result to the nearest - * integer (or, for a fixed point number - the standard argument - to - * the nearest .00001). Overflow and divide by zero are signalled in - * the result, a boolean - true on success, false on overflow. - */ -#if GCC_STRICT_OVERFLOW /* from above */ -/* It is not obvious which comparison below gets optimized in such a way that - * signed overflow would change the result; looking through the code does not - * reveal any tests which have the form GCC complains about, so presumably the - * optimizer is moving an add or subtract into the 'if' somewhere. - */ -#pragma GCC diagnostic push -#pragma GCC diagnostic warning "-Wstrict-overflow=2" -#endif /* GCC_STRICT_OVERFLOW */ -int -png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times, - png_int_32 divisor) -{ - /* Return a * times / divisor, rounded. */ - if (divisor != 0) - { - if (a == 0 || times == 0) - { - *res = 0; - return 1; - } - else - { -#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - double r = a; - r *= times; - r /= divisor; - r = floor(r+.5); - - /* A png_fixed_point is a 32-bit integer. */ - if (r <= 2147483647. && r >= -2147483648.) - { - *res = (png_fixed_point)r; - return 1; - } -#else - int negative = 0; - png_uint_32 A, T, D; - png_uint_32 s16, s32, s00; - - if (a < 0) - negative = 1, A = -a; - else - A = a; - - if (times < 0) - negative = !negative, T = -times; - else - T = times; - - if (divisor < 0) - negative = !negative, D = -divisor; - else - D = divisor; - - /* Following can't overflow because the arguments only - * have 31 bits each, however the result may be 32 bits. - */ - s16 = (A >> 16) * (T & 0xffff) + - (A & 0xffff) * (T >> 16); - /* Can't overflow because the a*times bit is only 30 - * bits at most. - */ - s32 = (A >> 16) * (T >> 16) + (s16 >> 16); - s00 = (A & 0xffff) * (T & 0xffff); - - s16 = (s16 & 0xffff) << 16; - s00 += s16; - - if (s00 < s16) - ++s32; /* carry */ - - if (s32 < D) /* else overflow */ - { - /* s32.s00 is now the 64-bit product, do a standard - * division, we know that s32 < D, so the maximum - * required shift is 31. - */ - int bitshift = 32; - png_fixed_point result = 0; /* NOTE: signed */ - - while (--bitshift >= 0) - { - png_uint_32 d32, d00; - - if (bitshift > 0) - d32 = D >> (32-bitshift), d00 = D << bitshift; - - else - d32 = 0, d00 = D; - - if (s32 > d32) - { - if (s00 < d00) --s32; /* carry */ - s32 -= d32, s00 -= d00, result += 1<= d00) - s32 = 0, s00 -= d00, result += 1<= (D >> 1)) - ++result; - - if (negative != 0) - result = -result; - - /* Check for overflow. */ - if ((negative != 0 && result <= 0) || - (negative == 0 && result >= 0)) - { - *res = result; - return 1; - } - } -#endif - } - } - - return 0; -} -#if GCC_STRICT_OVERFLOW -#pragma GCC diagnostic pop -#endif /* GCC_STRICT_OVERFLOW */ -#endif /* READ_GAMMA || INCH_CONVERSIONS */ - -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED) -/* The following is for when the caller doesn't much care about the - * result. - */ -png_fixed_point -png_muldiv_warn(png_const_structrp png_ptr, png_fixed_point a, png_int_32 times, - png_int_32 divisor) -{ - png_fixed_point result; - - if (png_muldiv(&result, a, times, divisor) != 0) - return result; - - png_warning(png_ptr, "fixed point overflow ignored"); - return 0; -} -#endif - -#ifdef PNG_GAMMA_SUPPORTED /* more fixed point functions for gamma */ -/* Calculate a reciprocal, return 0 on div-by-zero or overflow. */ -png_fixed_point -png_reciprocal(png_fixed_point a) -{ -#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - double r = floor(1E10/a+.5); - - if (r <= 2147483647. && r >= -2147483648.) - return (png_fixed_point)r; -#else - png_fixed_point res; - - if (png_muldiv(&res, 100000, 100000, a) != 0) - return res; -#endif - - return 0; /* error/overflow */ -} - -/* This is the shared test on whether a gamma value is 'significant' - whether - * it is worth doing gamma correction. - */ -int /* PRIVATE */ -png_gamma_significant(png_fixed_point gamma_val) -{ - return gamma_val < PNG_FP_1 - PNG_GAMMA_THRESHOLD_FIXED || - gamma_val > PNG_FP_1 + PNG_GAMMA_THRESHOLD_FIXED; -} -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED -#ifdef PNG_16BIT_SUPPORTED -/* A local convenience routine. */ -static png_fixed_point -png_product2(png_fixed_point a, png_fixed_point b) -{ - /* The required result is 1/a * 1/b; the following preserves accuracy. */ -#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - double r = a * 1E-5; - r *= b; - r = floor(r+.5); - - if (r <= 2147483647. && r >= -2147483648.) - return (png_fixed_point)r; -#else - png_fixed_point res; - - if (png_muldiv(&res, a, b, 100000) != 0) - return res; -#endif - - return 0; /* overflow */ -} -#endif /* 16BIT */ - -/* The inverse of the above. */ -png_fixed_point -png_reciprocal2(png_fixed_point a, png_fixed_point b) -{ - /* The required result is 1/a * 1/b; the following preserves accuracy. */ -#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - if (a != 0 && b != 0) - { - double r = 1E15/a; - r /= b; - r = floor(r+.5); - - if (r <= 2147483647. && r >= -2147483648.) - return (png_fixed_point)r; - } -#else - /* This may overflow because the range of png_fixed_point isn't symmetric, - * but this API is only used for the product of file and screen gamma so it - * doesn't matter that the smallest number it can produce is 1/21474, not - * 1/100000 - */ - png_fixed_point res = png_product2(a, b); - - if (res != 0) - return png_reciprocal(res); -#endif - - return 0; /* overflow */ -} -#endif /* READ_GAMMA */ - -#ifdef PNG_READ_GAMMA_SUPPORTED /* gamma table code */ -#ifndef PNG_FLOATING_ARITHMETIC_SUPPORTED -/* Fixed point gamma. - * - * The code to calculate the tables used below can be found in the shell script - * contrib/tools/intgamma.sh - * - * To calculate gamma this code implements fast log() and exp() calls using only - * fixed point arithmetic. This code has sufficient precision for either 8-bit - * or 16-bit sample values. - * - * The tables used here were calculated using simple 'bc' programs, but C double - * precision floating point arithmetic would work fine. - * - * 8-bit log table - * This is a table of -log(value/255)/log(2) for 'value' in the range 128 to - * 255, so it's the base 2 logarithm of a normalized 8-bit floating point - * mantissa. The numbers are 32-bit fractions. - */ -static const png_uint_32 -png_8bit_l2[128] = -{ - 4270715492U, 4222494797U, 4174646467U, 4127164793U, 4080044201U, 4033279239U, - 3986864580U, 3940795015U, 3895065449U, 3849670902U, 3804606499U, 3759867474U, - 3715449162U, 3671346997U, 3627556511U, 3584073329U, 3540893168U, 3498011834U, - 3455425220U, 3413129301U, 3371120137U, 3329393864U, 3287946700U, 3246774933U, - 3205874930U, 3165243125U, 3124876025U, 3084770202U, 3044922296U, 3005329011U, - 2965987113U, 2926893432U, 2888044853U, 2849438323U, 2811070844U, 2772939474U, - 2735041326U, 2697373562U, 2659933400U, 2622718104U, 2585724991U, 2548951424U, - 2512394810U, 2476052606U, 2439922311U, 2404001468U, 2368287663U, 2332778523U, - 2297471715U, 2262364947U, 2227455964U, 2192742551U, 2158222529U, 2123893754U, - 2089754119U, 2055801552U, 2022034013U, 1988449497U, 1955046031U, 1921821672U, - 1888774511U, 1855902668U, 1823204291U, 1790677560U, 1758320682U, 1726131893U, - 1694109454U, 1662251657U, 1630556815U, 1599023271U, 1567649391U, 1536433567U, - 1505374214U, 1474469770U, 1443718700U, 1413119487U, 1382670639U, 1352370686U, - 1322218179U, 1292211689U, 1262349810U, 1232631153U, 1203054352U, 1173618059U, - 1144320946U, 1115161701U, 1086139034U, 1057251672U, 1028498358U, 999877854U, - 971388940U, 943030410U, 914801076U, 886699767U, 858725327U, 830876614U, - 803152505U, 775551890U, 748073672U, 720716771U, 693480120U, 666362667U, - 639363374U, 612481215U, 585715177U, 559064263U, 532527486U, 506103872U, - 479792461U, 453592303U, 427502463U, 401522014U, 375650043U, 349885648U, - 324227938U, 298676034U, 273229066U, 247886176U, 222646516U, 197509248U, - 172473545U, 147538590U, 122703574U, 97967701U, 73330182U, 48790236U, - 24347096U, 0U - -#if 0 - /* The following are the values for 16-bit tables - these work fine for the - * 8-bit conversions but produce very slightly larger errors in the 16-bit - * log (about 1.2 as opposed to 0.7 absolute error in the final value). To - * use these all the shifts below must be adjusted appropriately. - */ - 65166, 64430, 63700, 62976, 62257, 61543, 60835, 60132, 59434, 58741, 58054, - 57371, 56693, 56020, 55352, 54689, 54030, 53375, 52726, 52080, 51439, 50803, - 50170, 49542, 48918, 48298, 47682, 47070, 46462, 45858, 45257, 44661, 44068, - 43479, 42894, 42312, 41733, 41159, 40587, 40020, 39455, 38894, 38336, 37782, - 37230, 36682, 36137, 35595, 35057, 34521, 33988, 33459, 32932, 32408, 31887, - 31369, 30854, 30341, 29832, 29325, 28820, 28319, 27820, 27324, 26830, 26339, - 25850, 25364, 24880, 24399, 23920, 23444, 22970, 22499, 22029, 21562, 21098, - 20636, 20175, 19718, 19262, 18808, 18357, 17908, 17461, 17016, 16573, 16132, - 15694, 15257, 14822, 14390, 13959, 13530, 13103, 12678, 12255, 11834, 11415, - 10997, 10582, 10168, 9756, 9346, 8937, 8531, 8126, 7723, 7321, 6921, 6523, - 6127, 5732, 5339, 4947, 4557, 4169, 3782, 3397, 3014, 2632, 2251, 1872, 1495, - 1119, 744, 372 -#endif -}; - -static png_int_32 -png_log8bit(unsigned int x) -{ - unsigned int lg2 = 0; - /* Each time 'x' is multiplied by 2, 1 must be subtracted off the final log, - * because the log is actually negate that means adding 1. The final - * returned value thus has the range 0 (for 255 input) to 7.994 (for 1 - * input), return -1 for the overflow (log 0) case, - so the result is - * always at most 19 bits. - */ - if ((x &= 0xff) == 0) - return -1; - - if ((x & 0xf0) == 0) - lg2 = 4, x <<= 4; - - if ((x & 0xc0) == 0) - lg2 += 2, x <<= 2; - - if ((x & 0x80) == 0) - lg2 += 1, x <<= 1; - - /* result is at most 19 bits, so this cast is safe: */ - return (png_int_32)((lg2 << 16) + ((png_8bit_l2[x-128]+32768)>>16)); -} - -/* The above gives exact (to 16 binary places) log2 values for 8-bit images, - * for 16-bit images we use the most significant 8 bits of the 16-bit value to - * get an approximation then multiply the approximation by a correction factor - * determined by the remaining up to 8 bits. This requires an additional step - * in the 16-bit case. - * - * We want log2(value/65535), we have log2(v'/255), where: - * - * value = v' * 256 + v'' - * = v' * f - * - * So f is value/v', which is equal to (256+v''/v') since v' is in the range 128 - * to 255 and v'' is in the range 0 to 255 f will be in the range 256 to less - * than 258. The final factor also needs to correct for the fact that our 8-bit - * value is scaled by 255, whereas the 16-bit values must be scaled by 65535. - * - * This gives a final formula using a calculated value 'x' which is value/v' and - * scaling by 65536 to match the above table: - * - * log2(x/257) * 65536 - * - * Since these numbers are so close to '1' we can use simple linear - * interpolation between the two end values 256/257 (result -368.61) and 258/257 - * (result 367.179). The values used below are scaled by a further 64 to give - * 16-bit precision in the interpolation: - * - * Start (256): -23591 - * Zero (257): 0 - * End (258): 23499 - */ -#ifdef PNG_16BIT_SUPPORTED -static png_int_32 -png_log16bit(png_uint_32 x) -{ - unsigned int lg2 = 0; - - /* As above, but now the input has 16 bits. */ - if ((x &= 0xffff) == 0) - return -1; - - if ((x & 0xff00) == 0) - lg2 = 8, x <<= 8; - - if ((x & 0xf000) == 0) - lg2 += 4, x <<= 4; - - if ((x & 0xc000) == 0) - lg2 += 2, x <<= 2; - - if ((x & 0x8000) == 0) - lg2 += 1, x <<= 1; - - /* Calculate the base logarithm from the top 8 bits as a 28-bit fractional - * value. - */ - lg2 <<= 28; - lg2 += (png_8bit_l2[(x>>8)-128]+8) >> 4; - - /* Now we need to interpolate the factor, this requires a division by the top - * 8 bits. Do this with maximum precision. - */ - x = ((x << 16) + (x >> 9)) / (x >> 8); - - /* Since we divided by the top 8 bits of 'x' there will be a '1' at 1<<24, - * the value at 1<<16 (ignoring this) will be 0 or 1; this gives us exactly - * 16 bits to interpolate to get the low bits of the result. Round the - * answer. Note that the end point values are scaled by 64 to retain overall - * precision and that 'lg2' is current scaled by an extra 12 bits, so adjust - * the overall scaling by 6-12. Round at every step. - */ - x -= 1U << 24; - - if (x <= 65536U) /* <= '257' */ - lg2 += ((23591U * (65536U-x)) + (1U << (16+6-12-1))) >> (16+6-12); - - else - lg2 -= ((23499U * (x-65536U)) + (1U << (16+6-12-1))) >> (16+6-12); - - /* Safe, because the result can't have more than 20 bits: */ - return (png_int_32)((lg2 + 2048) >> 12); -} -#endif /* 16BIT */ - -/* The 'exp()' case must invert the above, taking a 20-bit fixed point - * logarithmic value and returning a 16 or 8-bit number as appropriate. In - * each case only the low 16 bits are relevant - the fraction - since the - * integer bits (the top 4) simply determine a shift. - * - * The worst case is the 16-bit distinction between 65535 and 65534. This - * requires perhaps spurious accuracy in the decoding of the logarithm to - * distinguish log2(65535/65534.5) - 10^-5 or 17 bits. There is little chance - * of getting this accuracy in practice. - * - * To deal with this the following exp() function works out the exponent of the - * fractional part of the logarithm by using an accurate 32-bit value from the - * top four fractional bits then multiplying in the remaining bits. - */ -static const png_uint_32 -png_32bit_exp[16] = -{ - /* NOTE: the first entry is deliberately set to the maximum 32-bit value. */ - 4294967295U, 4112874773U, 3938502376U, 3771522796U, 3611622603U, 3458501653U, - 3311872529U, 3171459999U, 3037000500U, 2908241642U, 2784941738U, 2666869345U, - 2553802834U, 2445529972U, 2341847524U, 2242560872U -}; - -/* Adjustment table; provided to explain the numbers in the code below. */ -#if 0 -for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"} - 11 44937.64284865548751208448 - 10 45180.98734845585101160448 - 9 45303.31936980687359311872 - 8 45364.65110595323018870784 - 7 45395.35850361789624614912 - 6 45410.72259715102037508096 - 5 45418.40724413220722311168 - 4 45422.25021786898173001728 - 3 45424.17186732298419044352 - 2 45425.13273269940811464704 - 1 45425.61317555035558641664 - 0 45425.85339951654943850496 -#endif - -static png_uint_32 -png_exp(png_fixed_point x) -{ - if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */ - { - /* Obtain a 4-bit approximation */ - png_uint_32 e = png_32bit_exp[(x >> 12) & 0x0f]; - - /* Incorporate the low 12 bits - these decrease the returned value by - * multiplying by a number less than 1 if the bit is set. The multiplier - * is determined by the above table and the shift. Notice that the values - * converge on 45426 and this is used to allow linear interpolation of the - * low bits. - */ - if (x & 0x800) - e -= (((e >> 16) * 44938U) + 16U) >> 5; - - if (x & 0x400) - e -= (((e >> 16) * 45181U) + 32U) >> 6; - - if (x & 0x200) - e -= (((e >> 16) * 45303U) + 64U) >> 7; - - if (x & 0x100) - e -= (((e >> 16) * 45365U) + 128U) >> 8; - - if (x & 0x080) - e -= (((e >> 16) * 45395U) + 256U) >> 9; - - if (x & 0x040) - e -= (((e >> 16) * 45410U) + 512U) >> 10; - - /* And handle the low 6 bits in a single block. */ - e -= (((e >> 16) * 355U * (x & 0x3fU)) + 256U) >> 9; - - /* Handle the upper bits of x. */ - e >>= x >> 16; - return e; - } - - /* Check for overflow */ - if (x <= 0) - return png_32bit_exp[0]; - - /* Else underflow */ - return 0; -} - -static png_byte -png_exp8bit(png_fixed_point lg2) -{ - /* Get a 32-bit value: */ - png_uint_32 x = png_exp(lg2); - - /* Convert the 32-bit value to 0..255 by multiplying by 256-1. Note that the - * second, rounding, step can't overflow because of the first, subtraction, - * step. - */ - x -= x >> 8; - return (png_byte)(((x + 0x7fffffU) >> 24) & 0xff); -} - -#ifdef PNG_16BIT_SUPPORTED -static png_uint_16 -png_exp16bit(png_fixed_point lg2) -{ - /* Get a 32-bit value: */ - png_uint_32 x = png_exp(lg2); - - /* Convert the 32-bit value to 0..65535 by multiplying by 65536-1: */ - x -= x >> 16; - return (png_uint_16)((x + 32767U) >> 16); -} -#endif /* 16BIT */ -#endif /* FLOATING_ARITHMETIC */ - -png_byte -png_gamma_8bit_correct(unsigned int value, png_fixed_point gamma_val) -{ - if (value > 0 && value < 255) - { -# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - /* 'value' is unsigned, ANSI-C90 requires the compiler to correctly - * convert this to a floating point value. This includes values that - * would overflow if 'value' were to be converted to 'int'. - * - * Apparently GCC, however, does an intermediate conversion to (int) - * on some (ARM) but not all (x86) platforms, possibly because of - * hardware FP limitations. (E.g. if the hardware conversion always - * assumes the integer register contains a signed value.) This results - * in ANSI-C undefined behavior for large values. - * - * Other implementations on the same machine might actually be ANSI-C90 - * conformant and therefore compile spurious extra code for the large - * values. - * - * We can be reasonably sure that an unsigned to float conversion - * won't be faster than an int to float one. Therefore this code - * assumes responsibility for the undefined behavior, which it knows - * can't happen because of the check above. - * - * Note the argument to this routine is an (unsigned int) because, on - * 16-bit platforms, it is assigned a value which might be out of - * range for an (int); that would result in undefined behavior in the - * caller if the *argument* ('value') were to be declared (int). - */ - double r = floor(255*pow((int)/*SAFE*/value/255.,gamma_val*.00001)+.5); - return (png_byte)r; -# else - png_int_32 lg2 = png_log8bit(value); - png_fixed_point res; - - if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1) != 0) - return png_exp8bit(res); - - /* Overflow. */ - value = 0; -# endif - } - - return (png_byte)(value & 0xff); -} - -#ifdef PNG_16BIT_SUPPORTED -png_uint_16 -png_gamma_16bit_correct(unsigned int value, png_fixed_point gamma_val) -{ - if (value > 0 && value < 65535) - { -# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - /* The same (unsigned int)->(double) constraints apply here as above, - * however in this case the (unsigned int) to (int) conversion can - * overflow on an ANSI-C90 compliant system so the cast needs to ensure - * that this is not possible. - */ - double r = floor(65535*pow((png_int_32)value/65535., - gamma_val*.00001)+.5); - return (png_uint_16)r; -# else - png_int_32 lg2 = png_log16bit(value); - png_fixed_point res; - - if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1) != 0) - return png_exp16bit(res); - - /* Overflow. */ - value = 0; -# endif - } - - return (png_uint_16)value; -} -#endif /* 16BIT */ - -/* This does the right thing based on the bit_depth field of the - * png_struct, interpreting values as 8-bit or 16-bit. While the result - * is nominally a 16-bit value if bit depth is 8 then the result is - * 8-bit (as are the arguments.) - */ -png_uint_16 /* PRIVATE */ -png_gamma_correct(png_structrp png_ptr, unsigned int value, - png_fixed_point gamma_val) -{ - if (png_ptr->bit_depth == 8) - return png_gamma_8bit_correct(value, gamma_val); - -#ifdef PNG_16BIT_SUPPORTED - else - return png_gamma_16bit_correct(value, gamma_val); -#else - /* should not reach this */ - return 0; -#endif /* 16BIT */ -} - -#ifdef PNG_16BIT_SUPPORTED -/* Internal function to build a single 16-bit table - the table consists of - * 'num' 256 entry subtables, where 'num' is determined by 'shift' - the amount - * to shift the input values right (or 16-number_of_signifiant_bits). - * - * The caller is responsible for ensuring that the table gets cleaned up on - * png_error (i.e. if one of the mallocs below fails) - i.e. the *table argument - * should be somewhere that will be cleaned. - */ -static void -png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable, - PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val) -{ - /* Various values derived from 'shift': */ - PNG_CONST unsigned int num = 1U << (8U - shift); -#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - /* CSE the division and work round wacky GCC warnings (see the comments - * in png_gamma_8bit_correct for where these come from.) - */ - PNG_CONST double fmax = 1./(((png_int_32)1 << (16U - shift))-1); -#endif - PNG_CONST unsigned int max = (1U << (16U - shift))-1U; - PNG_CONST unsigned int max_by_2 = 1U << (15U-shift); - unsigned int i; - - png_uint_16pp table = *ptable = - (png_uint_16pp)png_calloc(png_ptr, num * (sizeof (png_uint_16p))); - - for (i = 0; i < num; i++) - { - png_uint_16p sub_table = table[i] = - (png_uint_16p)png_malloc(png_ptr, 256 * (sizeof (png_uint_16))); - - /* The 'threshold' test is repeated here because it can arise for one of - * the 16-bit tables even if the others don't hit it. - */ - if (png_gamma_significant(gamma_val) != 0) - { - /* The old code would overflow at the end and this would cause the - * 'pow' function to return a result >1, resulting in an - * arithmetic error. This code follows the spec exactly; ig is - * the recovered input sample, it always has 8-16 bits. - * - * We want input * 65535/max, rounded, the arithmetic fits in 32 - * bits (unsigned) so long as max <= 32767. - */ - unsigned int j; - for (j = 0; j < 256; j++) - { - png_uint_32 ig = (j << (8-shift)) + i; -# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED - /* Inline the 'max' scaling operation: */ - /* See png_gamma_8bit_correct for why the cast to (int) is - * required here. - */ - double d = floor(65535.*pow(ig*fmax, gamma_val*.00001)+.5); - sub_table[j] = (png_uint_16)d; -# else - if (shift != 0) - ig = (ig * 65535U + max_by_2)/max; - - sub_table[j] = png_gamma_16bit_correct(ig, gamma_val); -# endif - } - } - else - { - /* We must still build a table, but do it the fast way. */ - unsigned int j; - - for (j = 0; j < 256; j++) - { - png_uint_32 ig = (j << (8-shift)) + i; - - if (shift != 0) - ig = (ig * 65535U + max_by_2)/max; - - sub_table[j] = (png_uint_16)ig; - } - } - } -} - -/* NOTE: this function expects the *inverse* of the overall gamma transformation - * required. - */ -static void -png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable, - PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val) -{ - PNG_CONST unsigned int num = 1U << (8U - shift); - PNG_CONST unsigned int max = (1U << (16U - shift))-1U; - unsigned int i; - png_uint_32 last; - - png_uint_16pp table = *ptable = - (png_uint_16pp)png_calloc(png_ptr, num * (sizeof (png_uint_16p))); - - /* 'num' is the number of tables and also the number of low bits of low - * bits of the input 16-bit value used to select a table. Each table is - * itself indexed by the high 8 bits of the value. - */ - for (i = 0; i < num; i++) - table[i] = (png_uint_16p)png_malloc(png_ptr, - 256 * (sizeof (png_uint_16))); - - /* 'gamma_val' is set to the reciprocal of the value calculated above, so - * pow(out,g) is an *input* value. 'last' is the last input value set. - * - * In the loop 'i' is used to find output values. Since the output is - * 8-bit there are only 256 possible values. The tables are set up to - * select the closest possible output value for each input by finding - * the input value at the boundary between each pair of output values - * and filling the table up to that boundary with the lower output - * value. - * - * The boundary values are 0.5,1.5..253.5,254.5. Since these are 9-bit - * values the code below uses a 16-bit value in i; the values start at - * 128.5 (for 0.5) and step by 257, for a total of 254 values (the last - * entries are filled with 255). Start i at 128 and fill all 'last' - * table entries <= 'max' - */ - last = 0; - for (i = 0; i < 255; ++i) /* 8-bit output value */ - { - /* Find the corresponding maximum input value */ - png_uint_16 out = (png_uint_16)(i * 257U); /* 16-bit output value */ - - /* Find the boundary value in 16 bits: */ - png_uint_32 bound = png_gamma_16bit_correct(out+128U, gamma_val); - - /* Adjust (round) to (16-shift) bits: */ - bound = (bound * max + 32768U)/65535U + 1U; - - while (last < bound) - { - table[last & (0xffU >> shift)][last >> (8U - shift)] = out; - last++; - } - } - - /* And fill in the final entries. */ - while (last < (num << 8)) - { - table[last & (0xff >> shift)][last >> (8U - shift)] = 65535U; - last++; - } -} -#endif /* 16BIT */ - -/* Build a single 8-bit table: same as the 16-bit case but much simpler (and - * typically much faster). Note that libpng currently does no sBIT processing - * (apparently contrary to the spec) so a 256-entry table is always generated. - */ -static void -png_build_8bit_table(png_structrp png_ptr, png_bytepp ptable, - PNG_CONST png_fixed_point gamma_val) -{ - unsigned int i; - png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256); - - if (png_gamma_significant(gamma_val) != 0) - for (i=0; i<256; i++) - table[i] = png_gamma_8bit_correct(i, gamma_val); - - else - for (i=0; i<256; ++i) - table[i] = (png_byte)(i & 0xff); -} - -/* Used from png_read_destroy and below to release the memory used by the gamma - * tables. - */ -void /* PRIVATE */ -png_destroy_gamma_table(png_structrp png_ptr) -{ - png_free(png_ptr, png_ptr->gamma_table); - png_ptr->gamma_table = NULL; - -#ifdef PNG_16BIT_SUPPORTED - if (png_ptr->gamma_16_table != NULL) - { - int i; - int istop = (1 << (8 - png_ptr->gamma_shift)); - for (i = 0; i < istop; i++) - { - png_free(png_ptr, png_ptr->gamma_16_table[i]); - } - png_free(png_ptr, png_ptr->gamma_16_table); - png_ptr->gamma_16_table = NULL; - } -#endif /* 16BIT */ - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) - png_free(png_ptr, png_ptr->gamma_from_1); - png_ptr->gamma_from_1 = NULL; - png_free(png_ptr, png_ptr->gamma_to_1); - png_ptr->gamma_to_1 = NULL; - -#ifdef PNG_16BIT_SUPPORTED - if (png_ptr->gamma_16_from_1 != NULL) - { - int i; - int istop = (1 << (8 - png_ptr->gamma_shift)); - for (i = 0; i < istop; i++) - { - png_free(png_ptr, png_ptr->gamma_16_from_1[i]); - } - png_free(png_ptr, png_ptr->gamma_16_from_1); - png_ptr->gamma_16_from_1 = NULL; - } - if (png_ptr->gamma_16_to_1 != NULL) - { - int i; - int istop = (1 << (8 - png_ptr->gamma_shift)); - for (i = 0; i < istop; i++) - { - png_free(png_ptr, png_ptr->gamma_16_to_1[i]); - } - png_free(png_ptr, png_ptr->gamma_16_to_1); - png_ptr->gamma_16_to_1 = NULL; - } -#endif /* 16BIT */ -#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */ -} - -/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit - * tables, we don't make a full table if we are reducing to 8-bit in - * the future. Note also how the gamma_16 tables are segmented so that - * we don't need to allocate > 64K chunks for a full 16-bit table. - */ -void /* PRIVATE */ -png_build_gamma_table(png_structrp png_ptr, int bit_depth) -{ - png_debug(1, "in png_build_gamma_table"); - - /* Remove any existing table; this copes with multiple calls to - * png_read_update_info. The warning is because building the gamma tables - * multiple times is a performance hit - it's harmless but the ability to - * call png_read_update_info() multiple times is new in 1.5.6 so it seems - * sensible to warn if the app introduces such a hit. - */ - if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL) - { - png_warning(png_ptr, "gamma table being rebuilt"); - png_destroy_gamma_table(png_ptr); - } - - if (bit_depth <= 8) - { - png_build_8bit_table(png_ptr, &png_ptr->gamma_table, - png_ptr->screen_gamma > 0 ? - png_reciprocal2(png_ptr->colorspace.gamma, - png_ptr->screen_gamma) : PNG_FP_1); - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) - if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0) - { - png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1, - png_reciprocal(png_ptr->colorspace.gamma)); - - png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1, - png_ptr->screen_gamma > 0 ? - png_reciprocal(png_ptr->screen_gamma) : - png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */); - } -#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */ - } -#ifdef PNG_16BIT_SUPPORTED - else - { - png_byte shift, sig_bit; - - if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - sig_bit = png_ptr->sig_bit.red; - - if (png_ptr->sig_bit.green > sig_bit) - sig_bit = png_ptr->sig_bit.green; - - if (png_ptr->sig_bit.blue > sig_bit) - sig_bit = png_ptr->sig_bit.blue; - } - else - sig_bit = png_ptr->sig_bit.gray; - - /* 16-bit gamma code uses this equation: - * - * ov = table[(iv & 0xff) >> gamma_shift][iv >> 8] - * - * Where 'iv' is the input color value and 'ov' is the output value - - * pow(iv, gamma). - * - * Thus the gamma table consists of up to 256 256-entry tables. The table - * is selected by the (8-gamma_shift) most significant of the low 8 bits - * of the color value then indexed by the upper 8 bits: - * - * table[low bits][high 8 bits] - * - * So the table 'n' corresponds to all those 'iv' of: - * - * ..<(n+1 << gamma_shift)-1> - * - */ - if (sig_bit > 0 && sig_bit < 16U) - /* shift == insignificant bits */ - shift = (png_byte)((16U - sig_bit) & 0xff); - - else - shift = 0; /* keep all 16 bits */ - - if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0) - { - /* PNG_MAX_GAMMA_8 is the number of bits to keep - effectively - * the significant bits in the *input* when the output will - * eventually be 8 bits. By default it is 11. - */ - if (shift < (16U - PNG_MAX_GAMMA_8)) - shift = (16U - PNG_MAX_GAMMA_8); - } - - if (shift > 8U) - shift = 8U; /* Guarantees at least one table! */ - - png_ptr->gamma_shift = shift; - - /* NOTE: prior to 1.5.4 this test used to include PNG_BACKGROUND (now - * PNG_COMPOSE). This effectively smashed the background calculation for - * 16-bit output because the 8-bit table assumes the result will be - * reduced to 8 bits. - */ - if ((png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8)) != 0) - png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift, - png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma, - png_ptr->screen_gamma) : PNG_FP_1); - - else - png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift, - png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma, - png_ptr->screen_gamma) : PNG_FP_1); - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) - if ((png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY)) != 0) - { - png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift, - png_reciprocal(png_ptr->colorspace.gamma)); - - /* Notice that the '16 from 1' table should be full precision, however - * the lookup on this table still uses gamma_shift, so it can't be. - * TODO: fix this. - */ - png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift, - png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) : - png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */); - } -#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */ - } -#endif /* 16BIT */ -} -#endif /* READ_GAMMA */ - -/* HARDWARE OR SOFTWARE OPTION SUPPORT */ -#ifdef PNG_SET_OPTION_SUPPORTED -int PNGAPI -png_set_option(png_structrp png_ptr, int option, int onoff) -{ - if (png_ptr != NULL && option >= 0 && option < PNG_OPTION_NEXT && - (option & 1) == 0) - { - png_uint_32 mask = 3U << option; - png_uint_32 setting = (2U + (onoff != 0)) << option; - png_uint_32 current = png_ptr->options; - - png_ptr->options = (png_uint_32)(((current & ~mask) | setting) & 0xff); - - return (int)(current & mask) >> option; - } - - return PNG_OPTION_INVALID; -} -#endif - -/* sRGB support */ -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) -/* sRGB conversion tables; these are machine generated with the code in - * contrib/tools/makesRGB.c. The actual sRGB transfer curve defined in the - * specification (see the article at https://en.wikipedia.org/wiki/SRGB) - * is used, not the gamma=1/2.2 approximation use elsewhere in libpng. - * The sRGB to linear table is exact (to the nearest 16-bit linear fraction). - * The inverse (linear to sRGB) table has accuracies as follows: - * - * For all possible (255*65535+1) input values: - * - * error: -0.515566 - 0.625971, 79441 (0.475369%) of readings inexact - * - * For the input values corresponding to the 65536 16-bit values: - * - * error: -0.513727 - 0.607759, 308 (0.469978%) of readings inexact - * - * In all cases the inexact readings are only off by one. - */ - -#ifdef PNG_SIMPLIFIED_READ_SUPPORTED -/* The convert-to-sRGB table is only currently required for read. */ -const png_uint_16 png_sRGB_table[256] = -{ - 0,20,40,60,80,99,119,139, - 159,179,199,219,241,264,288,313, - 340,367,396,427,458,491,526,562, - 599,637,677,718,761,805,851,898, - 947,997,1048,1101,1156,1212,1270,1330, - 1391,1453,1517,1583,1651,1720,1790,1863, - 1937,2013,2090,2170,2250,2333,2418,2504, - 2592,2681,2773,2866,2961,3058,3157,3258, - 3360,3464,3570,3678,3788,3900,4014,4129, - 4247,4366,4488,4611,4736,4864,4993,5124, - 5257,5392,5530,5669,5810,5953,6099,6246, - 6395,6547,6700,6856,7014,7174,7335,7500, - 7666,7834,8004,8177,8352,8528,8708,8889, - 9072,9258,9445,9635,9828,10022,10219,10417, - 10619,10822,11028,11235,11446,11658,11873,12090, - 12309,12530,12754,12980,13209,13440,13673,13909, - 14146,14387,14629,14874,15122,15371,15623,15878, - 16135,16394,16656,16920,17187,17456,17727,18001, - 18277,18556,18837,19121,19407,19696,19987,20281, - 20577,20876,21177,21481,21787,22096,22407,22721, - 23038,23357,23678,24002,24329,24658,24990,25325, - 25662,26001,26344,26688,27036,27386,27739,28094, - 28452,28813,29176,29542,29911,30282,30656,31033, - 31412,31794,32179,32567,32957,33350,33745,34143, - 34544,34948,35355,35764,36176,36591,37008,37429, - 37852,38278,38706,39138,39572,40009,40449,40891, - 41337,41785,42236,42690,43147,43606,44069,44534, - 45002,45473,45947,46423,46903,47385,47871,48359, - 48850,49344,49841,50341,50844,51349,51858,52369, - 52884,53401,53921,54445,54971,55500,56032,56567, - 57105,57646,58190,58737,59287,59840,60396,60955, - 61517,62082,62650,63221,63795,64372,64952,65535 -}; -#endif /* SIMPLIFIED_READ */ - -/* The base/delta tables are required for both read and write (but currently - * only the simplified versions.) - */ -const png_uint_16 png_sRGB_base[512] = -{ - 128,1782,3383,4644,5675,6564,7357,8074, - 8732,9346,9921,10463,10977,11466,11935,12384, - 12816,13233,13634,14024,14402,14769,15125,15473, - 15812,16142,16466,16781,17090,17393,17690,17981, - 18266,18546,18822,19093,19359,19621,19879,20133, - 20383,20630,20873,21113,21349,21583,21813,22041, - 22265,22487,22707,22923,23138,23350,23559,23767, - 23972,24175,24376,24575,24772,24967,25160,25352, - 25542,25730,25916,26101,26284,26465,26645,26823, - 27000,27176,27350,27523,27695,27865,28034,28201, - 28368,28533,28697,28860,29021,29182,29341,29500, - 29657,29813,29969,30123,30276,30429,30580,30730, - 30880,31028,31176,31323,31469,31614,31758,31902, - 32045,32186,32327,32468,32607,32746,32884,33021, - 33158,33294,33429,33564,33697,33831,33963,34095, - 34226,34357,34486,34616,34744,34873,35000,35127, - 35253,35379,35504,35629,35753,35876,35999,36122, - 36244,36365,36486,36606,36726,36845,36964,37083, - 37201,37318,37435,37551,37668,37783,37898,38013, - 38127,38241,38354,38467,38580,38692,38803,38915, - 39026,39136,39246,39356,39465,39574,39682,39790, - 39898,40005,40112,40219,40325,40431,40537,40642, - 40747,40851,40955,41059,41163,41266,41369,41471, - 41573,41675,41777,41878,41979,42079,42179,42279, - 42379,42478,42577,42676,42775,42873,42971,43068, - 43165,43262,43359,43456,43552,43648,43743,43839, - 43934,44028,44123,44217,44311,44405,44499,44592, - 44685,44778,44870,44962,45054,45146,45238,45329, - 45420,45511,45601,45692,45782,45872,45961,46051, - 46140,46229,46318,46406,46494,46583,46670,46758, - 46846,46933,47020,47107,47193,47280,47366,47452, - 47538,47623,47709,47794,47879,47964,48048,48133, - 48217,48301,48385,48468,48552,48635,48718,48801, - 48884,48966,49048,49131,49213,49294,49376,49458, - 49539,49620,49701,49782,49862,49943,50023,50103, - 50183,50263,50342,50422,50501,50580,50659,50738, - 50816,50895,50973,51051,51129,51207,51285,51362, - 51439,51517,51594,51671,51747,51824,51900,51977, - 52053,52129,52205,52280,52356,52432,52507,52582, - 52657,52732,52807,52881,52956,53030,53104,53178, - 53252,53326,53400,53473,53546,53620,53693,53766, - 53839,53911,53984,54056,54129,54201,54273,54345, - 54417,54489,54560,54632,54703,54774,54845,54916, - 54987,55058,55129,55199,55269,55340,55410,55480, - 55550,55620,55689,55759,55828,55898,55967,56036, - 56105,56174,56243,56311,56380,56448,56517,56585, - 56653,56721,56789,56857,56924,56992,57059,57127, - 57194,57261,57328,57395,57462,57529,57595,57662, - 57728,57795,57861,57927,57993,58059,58125,58191, - 58256,58322,58387,58453,58518,58583,58648,58713, - 58778,58843,58908,58972,59037,59101,59165,59230, - 59294,59358,59422,59486,59549,59613,59677,59740, - 59804,59867,59930,59993,60056,60119,60182,60245, - 60308,60370,60433,60495,60558,60620,60682,60744, - 60806,60868,60930,60992,61054,61115,61177,61238, - 61300,61361,61422,61483,61544,61605,61666,61727, - 61788,61848,61909,61969,62030,62090,62150,62211, - 62271,62331,62391,62450,62510,62570,62630,62689, - 62749,62808,62867,62927,62986,63045,63104,63163, - 63222,63281,63340,63398,63457,63515,63574,63632, - 63691,63749,63807,63865,63923,63981,64039,64097, - 64155,64212,64270,64328,64385,64443,64500,64557, - 64614,64672,64729,64786,64843,64900,64956,65013, - 65070,65126,65183,65239,65296,65352,65409,65465 -}; - -const png_byte png_sRGB_delta[512] = -{ - 207,201,158,129,113,100,90,82,77,72,68,64,61,59,56,54, - 52,50,49,47,46,45,43,42,41,40,39,39,38,37,36,36, - 35,34,34,33,33,32,32,31,31,30,30,30,29,29,28,28, - 28,27,27,27,27,26,26,26,25,25,25,25,24,24,24,24, - 23,23,23,23,23,22,22,22,22,22,22,21,21,21,21,21, - 21,20,20,20,20,20,20,20,20,19,19,19,19,19,19,19, - 19,18,18,18,18,18,18,18,18,18,18,17,17,17,17,17, - 17,17,17,17,17,17,16,16,16,16,16,16,16,16,16,16, - 16,16,16,16,15,15,15,15,15,15,15,15,15,15,15,15, - 15,15,15,15,14,14,14,14,14,14,14,14,14,14,14,14, - 14,14,14,14,14,14,14,13,13,13,13,13,13,13,13,13, - 13,13,13,13,13,13,13,13,13,13,13,13,13,13,12,12, - 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, - 12,12,12,12,12,12,12,12,12,12,12,12,11,11,11,11, - 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, - 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11, - 11,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, - 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, - 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10, - 10,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 -}; -#endif /* SIMPLIFIED READ/WRITE sRGB support */ - -/* SIMPLIFIED READ/WRITE SUPPORT */ -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) -static int -png_image_free_function(png_voidp argument) -{ - png_imagep image = png_voidcast(png_imagep, argument); - png_controlp cp = image->opaque; - png_control c; - - /* Double check that we have a png_ptr - it should be impossible to get here - * without one. - */ - if (cp->png_ptr == NULL) - return 0; - - /* First free any data held in the control structure. */ -# ifdef PNG_STDIO_SUPPORTED - if (cp->owned_file != 0) - { - FILE *fp = png_voidcast(FILE*, cp->png_ptr->io_ptr); - cp->owned_file = 0; - - /* Ignore errors here. */ - if (fp != NULL) - { - cp->png_ptr->io_ptr = NULL; - (void)fclose(fp); - } - } -# endif - - /* Copy the control structure so that the original, allocated, version can be - * safely freed. Notice that a png_error here stops the remainder of the - * cleanup, but this is probably fine because that would indicate bad memory - * problems anyway. - */ - c = *cp; - image->opaque = &c; - png_free(c.png_ptr, cp); - - /* Then the structures, calling the correct API. */ - if (c.for_write != 0) - { -# ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED - png_destroy_write_struct(&c.png_ptr, &c.info_ptr); -# else - png_error(c.png_ptr, "simplified write not supported"); -# endif - } - else - { -# ifdef PNG_SIMPLIFIED_READ_SUPPORTED - png_destroy_read_struct(&c.png_ptr, &c.info_ptr, NULL); -# else - png_error(c.png_ptr, "simplified read not supported"); -# endif - } - - /* Success. */ - return 1; -} - -void PNGAPI -png_image_free(png_imagep image) -{ - /* Safely call the real function, but only if doing so is safe at this point - * (if not inside an error handling context). Otherwise assume - * png_safe_execute will call this API after the return. - */ - if (image != NULL && image->opaque != NULL && - image->opaque->error_buf == NULL) - { - /* Ignore errors here: */ - (void)png_safe_execute(image, png_image_free_function, image); - image->opaque = NULL; - } -} - -int /* PRIVATE */ -png_image_error(png_imagep image, png_const_charp error_message) -{ - /* Utility to log an error. */ - png_safecat(image->message, (sizeof image->message), 0, error_message); - image->warning_or_error |= PNG_IMAGE_ERROR; - png_image_free(image); - return 0; -} - -#endif /* SIMPLIFIED READ/WRITE */ -#endif /* READ || WRITE */ diff --git a/project/jni/png/pngdebug.h b/project/jni/png/pngdebug.h deleted file mode 100644 index 15a7ed0c9..000000000 --- a/project/jni/png/pngdebug.h +++ /dev/null @@ -1,153 +0,0 @@ - -/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c - * - * Last changed in libpng 1.6.8 [December 19, 2013] - * Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -/* Define PNG_DEBUG at compile time for debugging information. Higher - * numbers for PNG_DEBUG mean more debugging information. This has - * only been added since version 0.95 so it is not implemented throughout - * libpng yet, but more support will be added as needed. - * - * png_debug[1-2]?(level, message ,arg{0-2}) - * Expands to a statement (either a simple expression or a compound - * do..while(0) statement) that outputs a message with parameter - * substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG - * is undefined, 0 or 1 every png_debug expands to a simple expression - * (actually ((void)0)). - * - * level: level of detail of message, starting at 0. A level 'n' - * message is preceded by 'n' 3-space indentations (not implemented - * on Microsoft compilers unless PNG_DEBUG_FILE is also - * defined, to allow debug DLL compilation with no standard IO). - * message: a printf(3) style text string. A trailing '\n' is added - * to the message. - * arg: 0 to 2 arguments for printf(3) style substitution in message. - */ -#ifndef PNGDEBUG_H -#define PNGDEBUG_H -/* These settings control the formatting of messages in png.c and pngerror.c */ -/* Moved to pngdebug.h at 1.5.0 */ -# ifndef PNG_LITERAL_SHARP -# define PNG_LITERAL_SHARP 0x23 -# endif -# ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET -# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b -# endif -# ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET -# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d -# endif -# ifndef PNG_STRING_NEWLINE -# define PNG_STRING_NEWLINE "\n" -# endif - -#ifdef PNG_DEBUG -# if (PNG_DEBUG > 0) -# if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER) -# include -# if (PNG_DEBUG > 1) -# ifndef _DEBUG -# define _DEBUG -# endif -# ifndef png_debug -# define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE) -# endif -# ifndef png_debug1 -# define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1) -# endif -# ifndef png_debug2 -# define png_debug2(l,m,p1,p2) \ - _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2) -# endif -# endif -# else /* PNG_DEBUG_FILE || !_MSC_VER */ -# ifndef PNG_STDIO_SUPPORTED -# include /* not included yet */ -# endif -# ifndef PNG_DEBUG_FILE -# define PNG_DEBUG_FILE stderr -# endif /* PNG_DEBUG_FILE */ - -# if (PNG_DEBUG > 1) -# ifdef __STDC__ -# ifndef png_debug -# define png_debug(l,m) \ - do { \ - int num_tabs=l; \ - fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? " " : \ - (num_tabs==2 ? " " : (num_tabs>2 ? " " : "")))); \ - } while (0) -# endif -# ifndef png_debug1 -# define png_debug1(l,m,p1) \ - do { \ - int num_tabs=l; \ - fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? " " : \ - (num_tabs==2 ? " " : (num_tabs>2 ? " " : ""))),p1); \ - } while (0) -# endif -# ifndef png_debug2 -# define png_debug2(l,m,p1,p2) \ - do { \ - int num_tabs=l; \ - fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? " " : \ - (num_tabs==2 ? " " : (num_tabs>2 ? " " : ""))),p1,p2);\ - } while (0) -# endif -# else /* __STDC __ */ -# ifndef png_debug -# define png_debug(l,m) \ - do { \ - int num_tabs=l; \ - char format[256]; \ - snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ - m,PNG_STRING_NEWLINE); \ - fprintf(PNG_DEBUG_FILE,format); \ - } while (0) -# endif -# ifndef png_debug1 -# define png_debug1(l,m,p1) \ - do { \ - int num_tabs=l; \ - char format[256]; \ - snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ - m,PNG_STRING_NEWLINE); \ - fprintf(PNG_DEBUG_FILE,format,p1); \ - } while (0) -# endif -# ifndef png_debug2 -# define png_debug2(l,m,p1,p2) \ - do { \ - int num_tabs=l; \ - char format[256]; \ - snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ - (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ - m,PNG_STRING_NEWLINE); \ - fprintf(PNG_DEBUG_FILE,format,p1,p2); \ - } while (0) -# endif -# endif /* __STDC __ */ -# endif /* (PNG_DEBUG > 1) */ - -# endif /* _MSC_VER */ -# endif /* (PNG_DEBUG > 0) */ -#endif /* PNG_DEBUG */ -#ifndef png_debug -# define png_debug(l, m) ((void)0) -#endif -#ifndef png_debug1 -# define png_debug1(l, m, p1) ((void)0) -#endif -#ifndef png_debug2 -# define png_debug2(l, m, p1, p2) ((void)0) -#endif -#endif /* PNGDEBUG_H */ diff --git a/project/jni/png/pngerror.c b/project/jni/png/pngerror.c deleted file mode 100644 index ad48bfb98..000000000 --- a/project/jni/png/pngerror.c +++ /dev/null @@ -1,963 +0,0 @@ - -/* pngerror.c - stub functions for i/o and memory allocation - * - * Last changed in libpng 1.6.31 [July 27, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all error handling. Users who - * need special error handling are expected to write replacement functions - * and use png_set_error_fn() to use those functions. See the instructions - * at each function. - */ - -#include "pngpriv.h" - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -static PNG_FUNCTION(void, png_default_error,PNGARG((png_const_structrp png_ptr, - png_const_charp error_message)),PNG_NORETURN); - -#ifdef PNG_WARNINGS_SUPPORTED -static void /* PRIVATE */ -png_default_warning PNGARG((png_const_structrp png_ptr, - png_const_charp warning_message)); -#endif /* WARNINGS */ - -/* This function is called whenever there is a fatal error. This function - * should not be changed. If there is a need to handle errors differently, - * you should supply a replacement error function and use png_set_error_fn() - * to replace the error function at run-time. - */ -#ifdef PNG_ERROR_TEXT_SUPPORTED -PNG_FUNCTION(void,PNGAPI -png_error,(png_const_structrp png_ptr, png_const_charp error_message), - PNG_NORETURN) -{ -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - char msg[16]; - if (png_ptr != NULL) - { - if ((png_ptr->flags & - (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0) - { - if (*error_message == PNG_LITERAL_SHARP) - { - /* Strip "#nnnn " from beginning of error message. */ - int offset; - for (offset = 1; offset<15; offset++) - if (error_message[offset] == ' ') - break; - - if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0) - { - int i; - for (i = 0; i < offset - 1; i++) - msg[i] = error_message[i + 1]; - msg[i - 1] = '\0'; - error_message = msg; - } - - else - error_message += offset; - } - - else - { - if ((png_ptr->flags & PNG_FLAG_STRIP_ERROR_TEXT) != 0) - { - msg[0] = '0'; - msg[1] = '\0'; - error_message = msg; - } - } - } - } -#endif - if (png_ptr != NULL && png_ptr->error_fn != NULL) - (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr), - error_message); - - /* If the custom handler doesn't exist, or if it returns, - use the default handler, which will not return. */ - png_default_error(png_ptr, error_message); -} -#else -PNG_FUNCTION(void,PNGAPI -png_err,(png_const_structrp png_ptr),PNG_NORETURN) -{ - /* Prior to 1.5.2 the error_fn received a NULL pointer, expressed - * erroneously as '\0', instead of the empty string "". This was - * apparently an error, introduced in libpng-1.2.20, and png_default_error - * will crash in this case. - */ - if (png_ptr != NULL && png_ptr->error_fn != NULL) - (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr), ""); - - /* If the custom handler doesn't exist, or if it returns, - use the default handler, which will not return. */ - png_default_error(png_ptr, ""); -} -#endif /* ERROR_TEXT */ - -/* Utility to safely appends strings to a buffer. This never errors out so - * error checking is not required in the caller. - */ -size_t -png_safecat(png_charp buffer, size_t bufsize, size_t pos, - png_const_charp string) -{ - if (buffer != NULL && pos < bufsize) - { - if (string != NULL) - while (*string != '\0' && pos < bufsize-1) - buffer[pos++] = *string++; - - buffer[pos] = '\0'; - } - - return pos; -} - -#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED) -/* Utility to dump an unsigned value into a buffer, given a start pointer and - * and end pointer (which should point just *beyond* the end of the buffer!) - * Returns the pointer to the start of the formatted string. - */ -png_charp -png_format_number(png_const_charp start, png_charp end, int format, - png_alloc_size_t number) -{ - int count = 0; /* number of digits output */ - int mincount = 1; /* minimum number required */ - int output = 0; /* digit output (for the fixed point format) */ - - *--end = '\0'; - - /* This is written so that the loop always runs at least once, even with - * number zero. - */ - while (end > start && (number != 0 || count < mincount)) - { - - static const char digits[] = "0123456789ABCDEF"; - - switch (format) - { - case PNG_NUMBER_FORMAT_fixed: - /* Needs five digits (the fraction) */ - mincount = 5; - if (output != 0 || number % 10 != 0) - { - *--end = digits[number % 10]; - output = 1; - } - number /= 10; - break; - - case PNG_NUMBER_FORMAT_02u: - /* Expects at least 2 digits. */ - mincount = 2; - /* FALLTHROUGH */ - - case PNG_NUMBER_FORMAT_u: - *--end = digits[number % 10]; - number /= 10; - break; - - case PNG_NUMBER_FORMAT_02x: - /* This format expects at least two digits */ - mincount = 2; - /* FALLTHROUGH */ - - case PNG_NUMBER_FORMAT_x: - *--end = digits[number & 0xf]; - number >>= 4; - break; - - default: /* an error */ - number = 0; - break; - } - - /* Keep track of the number of digits added */ - ++count; - - /* Float a fixed number here: */ - if ((format == PNG_NUMBER_FORMAT_fixed) && (count == 5) && (end > start)) - { - /* End of the fraction, but maybe nothing was output? In that case - * drop the decimal point. If the number is a true zero handle that - * here. - */ - if (output != 0) - *--end = '.'; - else if (number == 0) /* and !output */ - *--end = '0'; - } - } - - return end; -} -#endif - -#ifdef PNG_WARNINGS_SUPPORTED -/* This function is called whenever there is a non-fatal error. This function - * should not be changed. If there is a need to handle warnings differently, - * you should supply a replacement warning function and use - * png_set_error_fn() to replace the warning function at run-time. - */ -void PNGAPI -png_warning(png_const_structrp png_ptr, png_const_charp warning_message) -{ - int offset = 0; - if (png_ptr != NULL) - { -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - if ((png_ptr->flags & - (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT)) != 0) -#endif - { - if (*warning_message == PNG_LITERAL_SHARP) - { - for (offset = 1; offset < 15; offset++) - if (warning_message[offset] == ' ') - break; - } - } - } - if (png_ptr != NULL && png_ptr->warning_fn != NULL) - (*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr), - warning_message + offset); - else - png_default_warning(png_ptr, warning_message + offset); -} - -/* These functions support 'formatted' warning messages with up to - * PNG_WARNING_PARAMETER_COUNT parameters. In the format string the parameter - * is introduced by @, where 'number' starts at 1. This follows the - * standard established by X/Open for internationalizable error messages. - */ -void -png_warning_parameter(png_warning_parameters p, int number, - png_const_charp string) -{ - if (number > 0 && number <= PNG_WARNING_PARAMETER_COUNT) - (void)png_safecat(p[number-1], (sizeof p[number-1]), 0, string); -} - -void -png_warning_parameter_unsigned(png_warning_parameters p, int number, int format, - png_alloc_size_t value) -{ - char buffer[PNG_NUMBER_BUFFER_SIZE]; - png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value)); -} - -void -png_warning_parameter_signed(png_warning_parameters p, int number, int format, - png_int_32 value) -{ - png_alloc_size_t u; - png_charp str; - char buffer[PNG_NUMBER_BUFFER_SIZE]; - - /* Avoid overflow by doing the negate in a png_alloc_size_t: */ - u = (png_alloc_size_t)value; - if (value < 0) - u = ~u + 1; - - str = PNG_FORMAT_NUMBER(buffer, format, u); - - if (value < 0 && str > buffer) - *--str = '-'; - - png_warning_parameter(p, number, str); -} - -void -png_formatted_warning(png_const_structrp png_ptr, png_warning_parameters p, - png_const_charp message) -{ - /* The internal buffer is just 192 bytes - enough for all our messages, - * overflow doesn't happen because this code checks! If someone figures - * out how to send us a message longer than 192 bytes, all that will - * happen is that the message will be truncated appropriately. - */ - size_t i = 0; /* Index in the msg[] buffer: */ - char msg[192]; - - /* Each iteration through the following loop writes at most one character - * to msg[i++] then returns here to validate that there is still space for - * the trailing '\0'. It may (in the case of a parameter) read more than - * one character from message[]; it must check for '\0' and continue to the - * test if it finds the end of string. - */ - while (i<(sizeof msg)-1 && *message != '\0') - { - /* '@' at end of string is now just printed (previously it was skipped); - * it is an error in the calling code to terminate the string with @. - */ - if (p != NULL && *message == '@' && message[1] != '\0') - { - int parameter_char = *++message; /* Consume the '@' */ - static const char valid_parameters[] = "123456789"; - int parameter = 0; - - /* Search for the parameter digit, the index in the string is the - * parameter to use. - */ - while (valid_parameters[parameter] != parameter_char && - valid_parameters[parameter] != '\0') - ++parameter; - - /* If the parameter digit is out of range it will just get printed. */ - if (parameter < PNG_WARNING_PARAMETER_COUNT) - { - /* Append this parameter */ - png_const_charp parm = p[parameter]; - png_const_charp pend = p[parameter] + (sizeof p[parameter]); - - /* No need to copy the trailing '\0' here, but there is no guarantee - * that parm[] has been initialized, so there is no guarantee of a - * trailing '\0': - */ - while (i<(sizeof msg)-1 && *parm != '\0' && parm < pend) - msg[i++] = *parm++; - - /* Consume the parameter digit too: */ - ++message; - continue; - } - - /* else not a parameter and there is a character after the @ sign; just - * copy that. This is known not to be '\0' because of the test above. - */ - } - - /* At this point *message can't be '\0', even in the bad parameter case - * above where there is a lone '@' at the end of the message string. - */ - msg[i++] = *message++; - } - - /* i is always less than (sizeof msg), so: */ - msg[i] = '\0'; - - /* And this is the formatted message. It may be larger than - * PNG_MAX_ERROR_TEXT, but that is only used for 'chunk' errors and these - * are not (currently) formatted. - */ - png_warning(png_ptr, msg); -} -#endif /* WARNINGS */ - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -void PNGAPI -png_benign_error(png_const_structrp png_ptr, png_const_charp error_message) -{ - if ((png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) != 0) - { -# ifdef PNG_READ_SUPPORTED - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 && - png_ptr->chunk_name != 0) - png_chunk_warning(png_ptr, error_message); - else -# endif - png_warning(png_ptr, error_message); - } - - else - { -# ifdef PNG_READ_SUPPORTED - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 && - png_ptr->chunk_name != 0) - png_chunk_error(png_ptr, error_message); - else -# endif - png_error(png_ptr, error_message); - } - -# ifndef PNG_ERROR_TEXT_SUPPORTED - PNG_UNUSED(error_message) -# endif -} - -void /* PRIVATE */ -png_app_warning(png_const_structrp png_ptr, png_const_charp error_message) -{ - if ((png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN) != 0) - png_warning(png_ptr, error_message); - else - png_error(png_ptr, error_message); - -# ifndef PNG_ERROR_TEXT_SUPPORTED - PNG_UNUSED(error_message) -# endif -} - -void /* PRIVATE */ -png_app_error(png_const_structrp png_ptr, png_const_charp error_message) -{ - if ((png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN) != 0) - png_warning(png_ptr, error_message); - else - png_error(png_ptr, error_message); - -# ifndef PNG_ERROR_TEXT_SUPPORTED - PNG_UNUSED(error_message) -# endif -} -#endif /* BENIGN_ERRORS */ - -#define PNG_MAX_ERROR_TEXT 196 /* Currently limited by profile_error in png.c */ -#if defined(PNG_WARNINGS_SUPPORTED) || \ - (defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)) -/* These utilities are used internally to build an error message that relates - * to the current chunk. The chunk name comes from png_ptr->chunk_name, - * which is used to prefix the message. The message is limited in length - * to 63 bytes. The name characters are output as hex digits wrapped in [] - * if the character is invalid. - */ -#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97)) -static PNG_CONST char png_digit[16] = { - '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', - 'A', 'B', 'C', 'D', 'E', 'F' -}; - -static void /* PRIVATE */ -png_format_buffer(png_const_structrp png_ptr, png_charp buffer, png_const_charp - error_message) -{ - png_uint_32 chunk_name = png_ptr->chunk_name; - int iout = 0, ishift = 24; - - while (ishift >= 0) - { - int c = (int)(chunk_name >> ishift) & 0xff; - - ishift -= 8; - if (isnonalpha(c) != 0) - { - buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET; - buffer[iout++] = png_digit[(c & 0xf0) >> 4]; - buffer[iout++] = png_digit[c & 0x0f]; - buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET; - } - - else - { - buffer[iout++] = (char)c; - } - } - - if (error_message == NULL) - buffer[iout] = '\0'; - - else - { - int iin = 0; - - buffer[iout++] = ':'; - buffer[iout++] = ' '; - - while (iin < PNG_MAX_ERROR_TEXT-1 && error_message[iin] != '\0') - buffer[iout++] = error_message[iin++]; - - /* iin < PNG_MAX_ERROR_TEXT, so the following is safe: */ - buffer[iout] = '\0'; - } -} -#endif /* WARNINGS || ERROR_TEXT */ - -#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED) -PNG_FUNCTION(void,PNGAPI -png_chunk_error,(png_const_structrp png_ptr, png_const_charp error_message), - PNG_NORETURN) -{ - char msg[18+PNG_MAX_ERROR_TEXT]; - if (png_ptr == NULL) - png_error(png_ptr, error_message); - - else - { - png_format_buffer(png_ptr, msg, error_message); - png_error(png_ptr, msg); - } -} -#endif /* READ && ERROR_TEXT */ - -#ifdef PNG_WARNINGS_SUPPORTED -void PNGAPI -png_chunk_warning(png_const_structrp png_ptr, png_const_charp warning_message) -{ - char msg[18+PNG_MAX_ERROR_TEXT]; - if (png_ptr == NULL) - png_warning(png_ptr, warning_message); - - else - { - png_format_buffer(png_ptr, msg, warning_message); - png_warning(png_ptr, msg); - } -} -#endif /* WARNINGS */ - -#ifdef PNG_READ_SUPPORTED -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -void PNGAPI -png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp - error_message) -{ - if ((png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN) != 0) - png_chunk_warning(png_ptr, error_message); - - else - png_chunk_error(png_ptr, error_message); - -# ifndef PNG_ERROR_TEXT_SUPPORTED - PNG_UNUSED(error_message) -# endif -} -#endif -#endif /* READ */ - -void /* PRIVATE */ -png_chunk_report(png_const_structrp png_ptr, png_const_charp message, int error) -{ -# ifndef PNG_WARNINGS_SUPPORTED - PNG_UNUSED(message) -# endif - - /* This is always supported, but for just read or just write it - * unconditionally does the right thing. - */ -# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED) - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0) -# endif - -# ifdef PNG_READ_SUPPORTED - { - if (error < PNG_CHUNK_ERROR) - png_chunk_warning(png_ptr, message); - - else - png_chunk_benign_error(png_ptr, message); - } -# endif - -# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED) - else if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0) -# endif - -# ifdef PNG_WRITE_SUPPORTED - { - if (error < PNG_CHUNK_WRITE_ERROR) - png_app_warning(png_ptr, message); - - else - png_app_error(png_ptr, message); - } -# endif -} - -#ifdef PNG_ERROR_TEXT_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED -PNG_FUNCTION(void, -png_fixed_error,(png_const_structrp png_ptr, png_const_charp name),PNG_NORETURN) -{ -# define fixed_message "fixed point overflow in " -# define fixed_message_ln ((sizeof fixed_message)-1) - unsigned int iin; - char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT]; - memcpy(msg, fixed_message, fixed_message_ln); - iin = 0; - if (name != NULL) - while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0) - { - msg[fixed_message_ln + iin] = name[iin]; - ++iin; - } - msg[fixed_message_ln + iin] = 0; - png_error(png_ptr, msg); -} -#endif -#endif - -#ifdef PNG_SETJMP_SUPPORTED -/* This API only exists if ANSI-C style error handling is used, - * otherwise it is necessary for png_default_error to be overridden. - */ -jmp_buf* PNGAPI -png_set_longjmp_fn(png_structrp png_ptr, png_longjmp_ptr longjmp_fn, - size_t jmp_buf_size) -{ - /* From libpng 1.6.0 the app gets one chance to set a 'jmpbuf_size' value - * and it must not change after that. Libpng doesn't care how big the - * buffer is, just that it doesn't change. - * - * If the buffer size is no *larger* than the size of jmp_buf when libpng is - * compiled a built in jmp_buf is returned; this preserves the pre-1.6.0 - * semantics that this call will not fail. If the size is larger, however, - * the buffer is allocated and this may fail, causing the function to return - * NULL. - */ - if (png_ptr == NULL) - return NULL; - - if (png_ptr->jmp_buf_ptr == NULL) - { - png_ptr->jmp_buf_size = 0; /* not allocated */ - - if (jmp_buf_size <= (sizeof png_ptr->jmp_buf_local)) - png_ptr->jmp_buf_ptr = &png_ptr->jmp_buf_local; - - else - { - png_ptr->jmp_buf_ptr = png_voidcast(jmp_buf *, - png_malloc_warn(png_ptr, jmp_buf_size)); - - if (png_ptr->jmp_buf_ptr == NULL) - return NULL; /* new NULL return on OOM */ - - png_ptr->jmp_buf_size = jmp_buf_size; - } - } - - else /* Already allocated: check the size */ - { - size_t size = png_ptr->jmp_buf_size; - - if (size == 0) - { - size = (sizeof png_ptr->jmp_buf_local); - if (png_ptr->jmp_buf_ptr != &png_ptr->jmp_buf_local) - { - /* This is an internal error in libpng: somehow we have been left - * with a stack allocated jmp_buf when the application regained - * control. It's always possible to fix this up, but for the moment - * this is a png_error because that makes it easy to detect. - */ - png_error(png_ptr, "Libpng jmp_buf still allocated"); - /* png_ptr->jmp_buf_ptr = &png_ptr->jmp_buf_local; */ - } - } - - if (size != jmp_buf_size) - { - png_warning(png_ptr, "Application jmp_buf size changed"); - return NULL; /* caller will probably crash: no choice here */ - } - } - - /* Finally fill in the function, now we have a satisfactory buffer. It is - * valid to change the function on every call. - */ - png_ptr->longjmp_fn = longjmp_fn; - return png_ptr->jmp_buf_ptr; -} - -void /* PRIVATE */ -png_free_jmpbuf(png_structrp png_ptr) -{ - if (png_ptr != NULL) - { - jmp_buf *jb = png_ptr->jmp_buf_ptr; - - /* A size of 0 is used to indicate a local, stack, allocation of the - * pointer; used here and in png.c - */ - if (jb != NULL && png_ptr->jmp_buf_size > 0) - { - - /* This stuff is so that a failure to free the error control structure - * does not leave libpng in a state with no valid error handling: the - * free always succeeds, if there is an error it gets ignored. - */ - if (jb != &png_ptr->jmp_buf_local) - { - /* Make an internal, libpng, jmp_buf to return here */ - jmp_buf free_jmp_buf; - - if (!setjmp(free_jmp_buf)) - { - png_ptr->jmp_buf_ptr = &free_jmp_buf; /* come back here */ - png_ptr->jmp_buf_size = 0; /* stack allocation */ - png_ptr->longjmp_fn = longjmp; - png_free(png_ptr, jb); /* Return to setjmp on error */ - } - } - } - - /* *Always* cancel everything out: */ - png_ptr->jmp_buf_size = 0; - png_ptr->jmp_buf_ptr = NULL; - png_ptr->longjmp_fn = 0; - } -} -#endif - -/* This is the default error handling function. Note that replacements for - * this function MUST NOT RETURN, or the program will likely crash. This - * function is used by default, or if the program supplies NULL for the - * error function pointer in png_set_error_fn(). - */ -static PNG_FUNCTION(void /* PRIVATE */, -png_default_error,(png_const_structrp png_ptr, png_const_charp error_message), - PNG_NORETURN) -{ -#ifdef PNG_CONSOLE_IO_SUPPORTED -#ifdef PNG_ERROR_NUMBERS_SUPPORTED - /* Check on NULL only added in 1.5.4 */ - if (error_message != NULL && *error_message == PNG_LITERAL_SHARP) - { - /* Strip "#nnnn " from beginning of error message. */ - int offset; - char error_number[16]; - for (offset = 0; offset<15; offset++) - { - error_number[offset] = error_message[offset + 1]; - if (error_message[offset] == ' ') - break; - } - - if ((offset > 1) && (offset < 15)) - { - error_number[offset - 1] = '\0'; - fprintf(stderr, "libpng error no. %s: %s", - error_number, error_message + offset + 1); - fprintf(stderr, PNG_STRING_NEWLINE); - } - - else - { - fprintf(stderr, "libpng error: %s, offset=%d", - error_message, offset); - fprintf(stderr, PNG_STRING_NEWLINE); - } - } - else -#endif - { - fprintf(stderr, "libpng error: %s", error_message ? error_message : - "undefined"); - fprintf(stderr, PNG_STRING_NEWLINE); - } -#else - PNG_UNUSED(error_message) /* Make compiler happy */ -#endif - png_longjmp(png_ptr, 1); -} - -PNG_FUNCTION(void,PNGAPI -png_longjmp,(png_const_structrp png_ptr, int val),PNG_NORETURN) -{ -#ifdef PNG_SETJMP_SUPPORTED - if (png_ptr != NULL && png_ptr->longjmp_fn != NULL && - png_ptr->jmp_buf_ptr != NULL) - png_ptr->longjmp_fn(*png_ptr->jmp_buf_ptr, val); -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(val) -#endif - - /* If control reaches this point, png_longjmp() must not return. The only - * choice is to terminate the whole process (or maybe the thread); to do - * this the ANSI-C abort() function is used unless a different method is - * implemented by overriding the default configuration setting for - * PNG_ABORT(). - */ - PNG_ABORT(); -} - -#ifdef PNG_WARNINGS_SUPPORTED -/* This function is called when there is a warning, but the library thinks - * it can continue anyway. Replacement functions don't have to do anything - * here if you don't want them to. In the default configuration, png_ptr is - * not used, but it is passed in case it may be useful. - */ -static void /* PRIVATE */ -png_default_warning(png_const_structrp png_ptr, png_const_charp warning_message) -{ -#ifdef PNG_CONSOLE_IO_SUPPORTED -# ifdef PNG_ERROR_NUMBERS_SUPPORTED - if (*warning_message == PNG_LITERAL_SHARP) - { - int offset; - char warning_number[16]; - for (offset = 0; offset < 15; offset++) - { - warning_number[offset] = warning_message[offset + 1]; - if (warning_message[offset] == ' ') - break; - } - - if ((offset > 1) && (offset < 15)) - { - warning_number[offset + 1] = '\0'; - fprintf(stderr, "libpng warning no. %s: %s", - warning_number, warning_message + offset); - fprintf(stderr, PNG_STRING_NEWLINE); - } - - else - { - fprintf(stderr, "libpng warning: %s", - warning_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } - } - else -# endif - - { - fprintf(stderr, "libpng warning: %s", warning_message); - fprintf(stderr, PNG_STRING_NEWLINE); - } -#else - PNG_UNUSED(warning_message) /* Make compiler happy */ -#endif - PNG_UNUSED(png_ptr) /* Make compiler happy */ -} -#endif /* WARNINGS */ - -/* This function is called when the application wants to use another method - * of handling errors and warnings. Note that the error function MUST NOT - * return to the calling routine or serious problems will occur. The return - * method used in the default routine calls longjmp(png_ptr->jmp_buf_ptr, 1) - */ -void PNGAPI -png_set_error_fn(png_structrp png_ptr, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warning_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->error_ptr = error_ptr; - png_ptr->error_fn = error_fn; -#ifdef PNG_WARNINGS_SUPPORTED - png_ptr->warning_fn = warning_fn; -#else - PNG_UNUSED(warning_fn) -#endif -} - - -/* This function returns a pointer to the error_ptr associated with the user - * functions. The application should free any memory associated with this - * pointer before png_write_destroy and png_read_destroy are called. - */ -png_voidp PNGAPI -png_get_error_ptr(png_const_structrp png_ptr) -{ - if (png_ptr == NULL) - return NULL; - - return ((png_voidp)png_ptr->error_ptr); -} - - -#ifdef PNG_ERROR_NUMBERS_SUPPORTED -void PNGAPI -png_set_strip_error_numbers(png_structrp png_ptr, png_uint_32 strip_mode) -{ - if (png_ptr != NULL) - { - png_ptr->flags &= - ((~(PNG_FLAG_STRIP_ERROR_NUMBERS | - PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode); - } -} -#endif - -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) - /* Currently the above both depend on SETJMP_SUPPORTED, however it would be - * possible to implement without setjmp support just so long as there is some - * way to handle the error return here: - */ -PNG_FUNCTION(void /* PRIVATE */, (PNGCBAPI -png_safe_error),(png_structp png_nonconst_ptr, png_const_charp error_message), - PNG_NORETURN) -{ - const png_const_structrp png_ptr = png_nonconst_ptr; - png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr); - - /* An error is always logged here, overwriting anything (typically a warning) - * that is already there: - */ - if (image != NULL) - { - png_safecat(image->message, (sizeof image->message), 0, error_message); - image->warning_or_error |= PNG_IMAGE_ERROR; - - /* Retrieve the jmp_buf from within the png_control, making this work for - * C++ compilation too is pretty tricky: C++ wants a pointer to the first - * element of a jmp_buf, but C doesn't tell us the type of that. - */ - if (image->opaque != NULL && image->opaque->error_buf != NULL) - longjmp(png_control_jmp_buf(image->opaque), 1); - - /* Missing longjmp buffer, the following is to help debugging: */ - { - size_t pos = png_safecat(image->message, (sizeof image->message), 0, - "bad longjmp: "); - png_safecat(image->message, (sizeof image->message), pos, - error_message); - } - } - - /* Here on an internal programming error. */ - abort(); -} - -#ifdef PNG_WARNINGS_SUPPORTED -void /* PRIVATE */ PNGCBAPI -png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message) -{ - const png_const_structrp png_ptr = png_nonconst_ptr; - png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr); - - /* A warning is only logged if there is no prior warning or error. */ - if (image->warning_or_error == 0) - { - png_safecat(image->message, (sizeof image->message), 0, warning_message); - image->warning_or_error |= PNG_IMAGE_WARNING; - } -} -#endif - -int /* PRIVATE */ -png_safe_execute(png_imagep image_in, int (*function)(png_voidp), png_voidp arg) -{ - volatile png_imagep image = image_in; - volatile int result; - volatile png_voidp saved_error_buf; - jmp_buf safe_jmpbuf; - - /* Safely execute function(arg) with png_error returning to this function. */ - saved_error_buf = image->opaque->error_buf; - result = setjmp(safe_jmpbuf) == 0; - - if (result != 0) - { - - image->opaque->error_buf = safe_jmpbuf; - result = function(arg); - } - - image->opaque->error_buf = saved_error_buf; - - /* And do the cleanup prior to any failure return. */ - if (result == 0) - png_image_free(image); - - return result; -} -#endif /* SIMPLIFIED READ || SIMPLIFIED_WRITE */ -#endif /* READ || WRITE */ diff --git a/project/jni/png/pngget.c b/project/jni/png/pngget.c deleted file mode 100644 index 26e9fb1c3..000000000 --- a/project/jni/png/pngget.c +++ /dev/null @@ -1,1248 +0,0 @@ - -/* pngget.c - retrieval of values from info struct - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - */ - -#include "pngpriv.h" - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -png_uint_32 PNGAPI -png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_uint_32 flag) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->valid & flag); - - return(0); -} - -png_size_t PNGAPI -png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->rowbytes); - - return(0); -} - -#ifdef PNG_INFO_IMAGE_SUPPORTED -png_bytepp PNGAPI -png_get_rows(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->row_pointers); - - return(0); -} -#endif - -#ifdef PNG_EASY_ACCESS_SUPPORTED -/* Easy access to info, added in libpng-0.99 */ -png_uint_32 PNGAPI -png_get_image_width(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->width; - - return (0); -} - -png_uint_32 PNGAPI -png_get_image_height(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->height; - - return (0); -} - -png_byte PNGAPI -png_get_bit_depth(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->bit_depth; - - return (0); -} - -png_byte PNGAPI -png_get_color_type(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->color_type; - - return (0); -} - -png_byte PNGAPI -png_get_filter_type(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->filter_type; - - return (0); -} - -png_byte PNGAPI -png_get_interlace_type(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->interlace_type; - - return (0); -} - -png_byte PNGAPI -png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return info_ptr->compression_type; - - return (0); -} - -png_uint_32 PNGAPI -png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp - info_ptr) -{ -#ifdef PNG_pHYs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - png_debug1(1, "in %s retrieval function", - "png_get_x_pixels_per_meter"); - - if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER) - return (info_ptr->x_pixels_per_unit); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -png_uint_32 PNGAPI -png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp - info_ptr) -{ -#ifdef PNG_pHYs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - png_debug1(1, "in %s retrieval function", - "png_get_y_pixels_per_meter"); - - if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER) - return (info_ptr->y_pixels_per_unit); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -png_uint_32 PNGAPI -png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ -#ifdef PNG_pHYs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter"); - - if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER && - info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit) - return (info_ptr->x_pixels_per_unit); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -#ifdef PNG_FLOATING_POINT_SUPPORTED -float PNGAPI -png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp - info_ptr) -{ -#ifdef PNG_READ_pHYs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio"); - - if (info_ptr->x_pixels_per_unit != 0) - return ((float)((float)info_ptr->y_pixels_per_unit - /(float)info_ptr->x_pixels_per_unit)); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return ((float)0.0); -} -#endif - -#ifdef PNG_FIXED_POINT_SUPPORTED -png_fixed_point PNGAPI -png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr, - png_const_inforp info_ptr) -{ -#ifdef PNG_READ_pHYs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0 && - info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0 && - info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX && - info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX) - { - png_fixed_point res; - - png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed"); - - /* The following casts work because a PNG 4 byte integer only has a valid - * range of 0..2^31-1; otherwise the cast might overflow. - */ - if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1, - (png_int_32)info_ptr->x_pixels_per_unit) != 0) - return res; - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return 0; -} -#endif - -png_int_32 PNGAPI -png_get_x_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ -#ifdef PNG_oFFs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_oFFs) != 0) - { - png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns"); - - if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER) - return (info_ptr->x_offset); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -png_int_32 PNGAPI -png_get_y_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ -#ifdef PNG_oFFs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_oFFs) != 0) - { - png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns"); - - if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER) - return (info_ptr->y_offset); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -png_int_32 PNGAPI -png_get_x_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ -#ifdef PNG_oFFs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_oFFs) != 0) - { - png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels"); - - if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL) - return (info_ptr->x_offset); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -png_int_32 PNGAPI -png_get_y_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ -#ifdef PNG_oFFs_SUPPORTED - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_oFFs) != 0) - { - png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels"); - - if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL) - return (info_ptr->y_offset); - } -#else - PNG_UNUSED(png_ptr) - PNG_UNUSED(info_ptr) -#endif - - return (0); -} - -#ifdef PNG_INCH_CONVERSIONS_SUPPORTED -static png_uint_32 -ppi_from_ppm(png_uint_32 ppm) -{ -#if 0 - /* The conversion is *(2.54/100), in binary (32 digits): - * .00000110100000001001110101001001 - */ - png_uint_32 t1001, t1101; - ppm >>= 1; /* .1 */ - t1001 = ppm + (ppm >> 3); /* .1001 */ - t1101 = t1001 + (ppm >> 1); /* .1101 */ - ppm >>= 20; /* .000000000000000000001 */ - t1101 += t1101 >> 15; /* .1101000000000001101 */ - t1001 >>= 11; /* .000000000001001 */ - t1001 += t1001 >> 12; /* .000000000001001000000001001 */ - ppm += t1001; /* .000000000001001000001001001 */ - ppm += t1101; /* .110100000001001110101001001 */ - return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */ -#else - /* The argument is a PNG unsigned integer, so it is not permitted - * to be bigger than 2^31. - */ - png_fixed_point result; - if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127, - 5000) != 0) - return (png_uint_32)result; - - /* Overflow. */ - return 0; -#endif -} - -png_uint_32 PNGAPI -png_get_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr)); -} - -png_uint_32 PNGAPI -png_get_x_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr)); -} - -png_uint_32 PNGAPI -png_get_y_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr)); -} - -#ifdef PNG_FIXED_POINT_SUPPORTED -static png_fixed_point -png_fixed_inches_from_microns(png_const_structrp png_ptr, png_int_32 microns) -{ - /* Convert from metres * 1,000,000 to inches * 100,000, meters to - * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127. - * Notice that this can overflow - a warning is output and 0 is - * returned. - */ - return png_muldiv_warn(png_ptr, microns, 500, 127); -} - -png_fixed_point PNGAPI -png_get_x_offset_inches_fixed(png_const_structrp png_ptr, - png_const_inforp info_ptr) -{ - return png_fixed_inches_from_microns(png_ptr, - png_get_x_offset_microns(png_ptr, info_ptr)); -} -#endif - -#ifdef PNG_FIXED_POINT_SUPPORTED -png_fixed_point PNGAPI -png_get_y_offset_inches_fixed(png_const_structrp png_ptr, - png_const_inforp info_ptr) -{ - return png_fixed_inches_from_microns(png_ptr, - png_get_y_offset_microns(png_ptr, info_ptr)); -} -#endif - -#ifdef PNG_FLOATING_POINT_SUPPORTED -float PNGAPI -png_get_x_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - /* To avoid the overflow do the conversion directly in floating - * point. - */ - return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937); -} -#endif - -#ifdef PNG_FLOATING_POINT_SUPPORTED -float PNGAPI -png_get_y_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - /* To avoid the overflow do the conversion directly in floating - * point. - */ - return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937); -} -#endif - -#ifdef PNG_pHYs_SUPPORTED -png_uint_32 PNGAPI -png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) -{ - png_uint_32 retval = 0; - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - png_debug1(1, "in %s retrieval function", "pHYs"); - - if (res_x != NULL) - { - *res_x = info_ptr->x_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - - if (res_y != NULL) - { - *res_y = info_ptr->y_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - - if (unit_type != NULL) - { - *unit_type = (int)info_ptr->phys_unit_type; - retval |= PNG_INFO_pHYs; - - if (*unit_type == 1) - { - if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50); - if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50); - } - } - } - - return (retval); -} -#endif /* pHYs */ -#endif /* INCH_CONVERSIONS */ - -/* png_get_channels really belongs in here, too, but it's been around longer */ - -#endif /* EASY_ACCESS */ - - -png_byte PNGAPI -png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->channels); - - return (0); -} - -#ifdef PNG_READ_SUPPORTED -png_const_bytep PNGAPI -png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return(info_ptr->signature); - - return (NULL); -} -#endif - -#ifdef PNG_bKGD_SUPPORTED -png_uint_32 PNGAPI -png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr, - png_color_16p *background) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_bKGD) != 0 && - background != NULL) - { - png_debug1(1, "in %s retrieval function", "bKGD"); - - *background = &(info_ptr->background); - return (PNG_INFO_bKGD); - } - - return (0); -} -#endif - -#ifdef PNG_cHRM_SUPPORTED -/* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the - * same time to correct the rgb grayscale coefficient defaults obtained from the - * cHRM chunk in 1.5.4 - */ -# ifdef PNG_FLOATING_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr, - double *white_x, double *white_y, double *red_x, double *red_y, - double *green_x, double *green_y, double *blue_x, double *blue_y) -{ - /* Quiet API change: this code used to only return the end points if a cHRM - * chunk was present, but the end points can also come from iCCP or sRGB - * chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and - * the png_set_ APIs merely check that set end points are mutually - * consistent. - */ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - { - png_debug1(1, "in %s retrieval function", "cHRM"); - - if (white_x != NULL) - *white_x = png_float(png_ptr, - info_ptr->colorspace.end_points_xy.whitex, "cHRM white X"); - if (white_y != NULL) - *white_y = png_float(png_ptr, - info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y"); - if (red_x != NULL) - *red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx, - "cHRM red X"); - if (red_y != NULL) - *red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy, - "cHRM red Y"); - if (green_x != NULL) - *green_x = png_float(png_ptr, - info_ptr->colorspace.end_points_xy.greenx, "cHRM green X"); - if (green_y != NULL) - *green_y = png_float(png_ptr, - info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y"); - if (blue_x != NULL) - *blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex, - "cHRM blue X"); - if (blue_y != NULL) - *blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey, - "cHRM blue Y"); - return (PNG_INFO_cHRM); - } - - return (0); -} - -png_uint_32 PNGAPI -png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr, - double *red_X, double *red_Y, double *red_Z, double *green_X, - double *green_Y, double *green_Z, double *blue_X, double *blue_Y, - double *blue_Z) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - { - png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)"); - - if (red_X != NULL) - *red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X, - "cHRM red X"); - if (red_Y != NULL) - *red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y, - "cHRM red Y"); - if (red_Z != NULL) - *red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z, - "cHRM red Z"); - if (green_X != NULL) - *green_X = png_float(png_ptr, - info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X"); - if (green_Y != NULL) - *green_Y = png_float(png_ptr, - info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y"); - if (green_Z != NULL) - *green_Z = png_float(png_ptr, - info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z"); - if (blue_X != NULL) - *blue_X = png_float(png_ptr, - info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X"); - if (blue_Y != NULL) - *blue_Y = png_float(png_ptr, - info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y"); - if (blue_Z != NULL) - *blue_Z = png_float(png_ptr, - info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z"); - return (PNG_INFO_cHRM); - } - - return (0); -} -# endif - -# ifdef PNG_FIXED_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_fixed_point *int_red_X, png_fixed_point *int_red_Y, - png_fixed_point *int_red_Z, png_fixed_point *int_green_X, - png_fixed_point *int_green_Y, png_fixed_point *int_green_Z, - png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y, - png_fixed_point *int_blue_Z) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - { - png_debug1(1, "in %s retrieval function", "cHRM_XYZ"); - - if (int_red_X != NULL) - *int_red_X = info_ptr->colorspace.end_points_XYZ.red_X; - if (int_red_Y != NULL) - *int_red_Y = info_ptr->colorspace.end_points_XYZ.red_Y; - if (int_red_Z != NULL) - *int_red_Z = info_ptr->colorspace.end_points_XYZ.red_Z; - if (int_green_X != NULL) - *int_green_X = info_ptr->colorspace.end_points_XYZ.green_X; - if (int_green_Y != NULL) - *int_green_Y = info_ptr->colorspace.end_points_XYZ.green_Y; - if (int_green_Z != NULL) - *int_green_Z = info_ptr->colorspace.end_points_XYZ.green_Z; - if (int_blue_X != NULL) - *int_blue_X = info_ptr->colorspace.end_points_XYZ.blue_X; - if (int_blue_Y != NULL) - *int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y; - if (int_blue_Z != NULL) - *int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z; - return (PNG_INFO_cHRM); - } - - return (0); -} - -png_uint_32 PNGAPI -png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x, - png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y, - png_fixed_point *blue_x, png_fixed_point *blue_y) -{ - png_debug1(1, "in %s retrieval function", "cHRM"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0) - { - if (white_x != NULL) - *white_x = info_ptr->colorspace.end_points_xy.whitex; - if (white_y != NULL) - *white_y = info_ptr->colorspace.end_points_xy.whitey; - if (red_x != NULL) - *red_x = info_ptr->colorspace.end_points_xy.redx; - if (red_y != NULL) - *red_y = info_ptr->colorspace.end_points_xy.redy; - if (green_x != NULL) - *green_x = info_ptr->colorspace.end_points_xy.greenx; - if (green_y != NULL) - *green_y = info_ptr->colorspace.end_points_xy.greeny; - if (blue_x != NULL) - *blue_x = info_ptr->colorspace.end_points_xy.bluex; - if (blue_y != NULL) - *blue_y = info_ptr->colorspace.end_points_xy.bluey; - return (PNG_INFO_cHRM); - } - - return (0); -} -# endif -#endif - -#ifdef PNG_gAMA_SUPPORTED -# ifdef PNG_FIXED_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_fixed_point *file_gamma) -{ - png_debug1(1, "in %s retrieval function", "gAMA"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 && - file_gamma != NULL) - { - *file_gamma = info_ptr->colorspace.gamma; - return (PNG_INFO_gAMA); - } - - return (0); -} -# endif - -# ifdef PNG_FLOATING_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr, - double *file_gamma) -{ - png_debug1(1, "in %s retrieval function", "gAMA(float)"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 && - file_gamma != NULL) - { - *file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma, - "png_get_gAMA"); - return (PNG_INFO_gAMA); - } - - return (0); -} -# endif -#endif - -#ifdef PNG_sRGB_SUPPORTED -png_uint_32 PNGAPI -png_get_sRGB(png_const_structrp png_ptr, png_const_inforp info_ptr, - int *file_srgb_intent) -{ - png_debug1(1, "in %s retrieval function", "sRGB"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sRGB) != 0 && file_srgb_intent != NULL) - { - *file_srgb_intent = info_ptr->colorspace.rendering_intent; - return (PNG_INFO_sRGB); - } - - return (0); -} -#endif - -#ifdef PNG_iCCP_SUPPORTED -png_uint_32 PNGAPI -png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr, - png_charpp name, int *compression_type, - png_bytepp profile, png_uint_32 *proflen) -{ - png_debug1(1, "in %s retrieval function", "iCCP"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_iCCP) != 0 && - name != NULL && compression_type != NULL && profile != NULL && - proflen != NULL) - { - *name = info_ptr->iccp_name; - *profile = info_ptr->iccp_profile; - *proflen = png_get_uint_32(info_ptr->iccp_profile); - /* This is somewhat irrelevant since the profile data returned has - * actually been uncompressed. - */ - *compression_type = PNG_COMPRESSION_TYPE_BASE; - return (PNG_INFO_iCCP); - } - - return (0); -} -#endif - -#ifdef PNG_sPLT_SUPPORTED -int PNGAPI -png_get_sPLT(png_const_structrp png_ptr, png_inforp info_ptr, - png_sPLT_tpp spalettes) -{ - if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL) - { - *spalettes = info_ptr->splt_palettes; - return info_ptr->splt_palettes_num; - } - - return (0); -} -#endif - -#ifdef PNG_eXIf_SUPPORTED -png_uint_32 PNGAPI -png_get_eXIf(png_const_structrp png_ptr, png_inforp info_ptr, - png_bytep *exif) -{ - png_warning(png_ptr, "png_get_eXIf does not work; use png_get_eXIf_1"); - PNG_UNUSED(info_ptr) - PNG_UNUSED(exif) - return 0; -} - -png_uint_32 PNGAPI -png_get_eXIf_1(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_uint_32 *num_exif, png_bytep *exif) -{ - png_debug1(1, "in %s retrieval function", "eXIf"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_eXIf) != 0 && exif != NULL) - { - *num_exif = info_ptr->num_exif; - *exif = info_ptr->exif; - return (PNG_INFO_eXIf); - } - - return (0); -} -#endif - -#ifdef PNG_hIST_SUPPORTED -png_uint_32 PNGAPI -png_get_hIST(png_const_structrp png_ptr, png_inforp info_ptr, - png_uint_16p *hist) -{ - png_debug1(1, "in %s retrieval function", "hIST"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_hIST) != 0 && hist != NULL) - { - *hist = info_ptr->hist; - return (PNG_INFO_hIST); - } - - return (0); -} -#endif - -png_uint_32 PNGAPI -png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_uint_32 *width, png_uint_32 *height, int *bit_depth, - int *color_type, int *interlace_type, int *compression_type, - int *filter_type) -{ - png_debug1(1, "in %s retrieval function", "IHDR"); - - if (png_ptr == NULL || info_ptr == NULL) - return (0); - - if (width != NULL) - *width = info_ptr->width; - - if (height != NULL) - *height = info_ptr->height; - - if (bit_depth != NULL) - *bit_depth = info_ptr->bit_depth; - - if (color_type != NULL) - *color_type = info_ptr->color_type; - - if (compression_type != NULL) - *compression_type = info_ptr->compression_type; - - if (filter_type != NULL) - *filter_type = info_ptr->filter_type; - - if (interlace_type != NULL) - *interlace_type = info_ptr->interlace_type; - - /* This is redundant if we can be sure that the info_ptr values were all - * assigned in png_set_IHDR(). We do the check anyhow in case an - * application has ignored our advice not to mess with the members - * of info_ptr directly. - */ - png_check_IHDR(png_ptr, info_ptr->width, info_ptr->height, - info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, - info_ptr->compression_type, info_ptr->filter_type); - - return (1); -} - -#ifdef PNG_oFFs_SUPPORTED -png_uint_32 PNGAPI -png_get_oFFs(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type) -{ - png_debug1(1, "in %s retrieval function", "oFFs"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_oFFs) != 0 && - offset_x != NULL && offset_y != NULL && unit_type != NULL) - { - *offset_x = info_ptr->x_offset; - *offset_y = info_ptr->y_offset; - *unit_type = (int)info_ptr->offset_unit_type; - return (PNG_INFO_oFFs); - } - - return (0); -} -#endif - -#ifdef PNG_pCAL_SUPPORTED -png_uint_32 PNGAPI -png_get_pCAL(png_const_structrp png_ptr, png_inforp info_ptr, - png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams, - png_charp *units, png_charpp *params) -{ - png_debug1(1, "in %s retrieval function", "pCAL"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pCAL) != 0 && - purpose != NULL && X0 != NULL && X1 != NULL && type != NULL && - nparams != NULL && units != NULL && params != NULL) - { - *purpose = info_ptr->pcal_purpose; - *X0 = info_ptr->pcal_X0; - *X1 = info_ptr->pcal_X1; - *type = (int)info_ptr->pcal_type; - *nparams = (int)info_ptr->pcal_nparams; - *units = info_ptr->pcal_units; - *params = info_ptr->pcal_params; - return (PNG_INFO_pCAL); - } - - return (0); -} -#endif - -#ifdef PNG_sCAL_SUPPORTED -# ifdef PNG_FIXED_POINT_SUPPORTED -# if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \ - defined(PNG_FLOATING_POINT_SUPPORTED) -png_uint_32 PNGAPI -png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr, - int *unit, png_fixed_point *width, png_fixed_point *height) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL) != 0) - { - *unit = info_ptr->scal_unit; - /*TODO: make this work without FP support; the API is currently eliminated - * if neither floating point APIs nor internal floating point arithmetic - * are enabled. - */ - *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width"); - *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height), - "sCAL height"); - return (PNG_INFO_sCAL); - } - - return(0); -} -# endif /* FLOATING_ARITHMETIC */ -# endif /* FIXED_POINT */ -# ifdef PNG_FLOATING_POINT_SUPPORTED -png_uint_32 PNGAPI -png_get_sCAL(png_const_structrp png_ptr, png_const_inforp info_ptr, - int *unit, double *width, double *height) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL) != 0) - { - *unit = info_ptr->scal_unit; - *width = atof(info_ptr->scal_s_width); - *height = atof(info_ptr->scal_s_height); - return (PNG_INFO_sCAL); - } - - return(0); -} -# endif /* FLOATING POINT */ -png_uint_32 PNGAPI -png_get_sCAL_s(png_const_structrp png_ptr, png_const_inforp info_ptr, - int *unit, png_charpp width, png_charpp height) -{ - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sCAL) != 0) - { - *unit = info_ptr->scal_unit; - *width = info_ptr->scal_s_width; - *height = info_ptr->scal_s_height; - return (PNG_INFO_sCAL); - } - - return(0); -} -#endif /* sCAL */ - -#ifdef PNG_pHYs_SUPPORTED -png_uint_32 PNGAPI -png_get_pHYs(png_const_structrp png_ptr, png_const_inforp info_ptr, - png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type) -{ - png_uint_32 retval = 0; - - png_debug1(1, "in %s retrieval function", "pHYs"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - if (res_x != NULL) - { - *res_x = info_ptr->x_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - - if (res_y != NULL) - { - *res_y = info_ptr->y_pixels_per_unit; - retval |= PNG_INFO_pHYs; - } - - if (unit_type != NULL) - { - *unit_type = (int)info_ptr->phys_unit_type; - retval |= PNG_INFO_pHYs; - } - } - - return (retval); -} -#endif /* pHYs */ - -png_uint_32 PNGAPI -png_get_PLTE(png_const_structrp png_ptr, png_inforp info_ptr, - png_colorp *palette, int *num_palette) -{ - png_debug1(1, "in %s retrieval function", "PLTE"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_PLTE) != 0 && palette != NULL) - { - *palette = info_ptr->palette; - *num_palette = info_ptr->num_palette; - png_debug1(3, "num_palette = %d", *num_palette); - return (PNG_INFO_PLTE); - } - - return (0); -} - -#ifdef PNG_sBIT_SUPPORTED -png_uint_32 PNGAPI -png_get_sBIT(png_const_structrp png_ptr, png_inforp info_ptr, - png_color_8p *sig_bit) -{ - png_debug1(1, "in %s retrieval function", "sBIT"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_sBIT) != 0 && sig_bit != NULL) - { - *sig_bit = &(info_ptr->sig_bit); - return (PNG_INFO_sBIT); - } - - return (0); -} -#endif - -#ifdef PNG_TEXT_SUPPORTED -int PNGAPI -png_get_text(png_const_structrp png_ptr, png_inforp info_ptr, - png_textp *text_ptr, int *num_text) -{ - if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0) - { - png_debug1(1, "in 0x%lx retrieval function", - (unsigned long)png_ptr->chunk_name); - - if (text_ptr != NULL) - *text_ptr = info_ptr->text; - - if (num_text != NULL) - *num_text = info_ptr->num_text; - - return info_ptr->num_text; - } - - if (num_text != NULL) - *num_text = 0; - - return(0); -} -#endif - -#ifdef PNG_tIME_SUPPORTED -png_uint_32 PNGAPI -png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr, - png_timep *mod_time) -{ - png_debug1(1, "in %s retrieval function", "tIME"); - - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_tIME) != 0 && mod_time != NULL) - { - *mod_time = &(info_ptr->mod_time); - return (PNG_INFO_tIME); - } - - return (0); -} -#endif - -#ifdef PNG_tRNS_SUPPORTED -png_uint_32 PNGAPI -png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr, - png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color) -{ - png_uint_32 retval = 0; - if (png_ptr != NULL && info_ptr != NULL && - (info_ptr->valid & PNG_INFO_tRNS) != 0) - { - png_debug1(1, "in %s retrieval function", "tRNS"); - - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (trans_alpha != NULL) - { - *trans_alpha = info_ptr->trans_alpha; - retval |= PNG_INFO_tRNS; - } - - if (trans_color != NULL) - *trans_color = &(info_ptr->trans_color); - } - - else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */ - { - if (trans_color != NULL) - { - *trans_color = &(info_ptr->trans_color); - retval |= PNG_INFO_tRNS; - } - - if (trans_alpha != NULL) - *trans_alpha = NULL; - } - - if (num_trans != NULL) - { - *num_trans = info_ptr->num_trans; - retval |= PNG_INFO_tRNS; - } - } - - return (retval); -} -#endif - -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED -int PNGAPI -png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr, - png_unknown_chunkpp unknowns) -{ - if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL) - { - *unknowns = info_ptr->unknown_chunks; - return info_ptr->unknown_chunks_num; - } - - return (0); -} -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -png_byte PNGAPI -png_get_rgb_to_gray_status (png_const_structrp png_ptr) -{ - return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0); -} -#endif - -#ifdef PNG_USER_CHUNKS_SUPPORTED -png_voidp PNGAPI -png_get_user_chunk_ptr(png_const_structrp png_ptr) -{ - return (png_ptr ? png_ptr->user_chunk_ptr : NULL); -} -#endif - -png_size_t PNGAPI -png_get_compression_buffer_size(png_const_structrp png_ptr) -{ - if (png_ptr == NULL) - return 0; - -#ifdef PNG_WRITE_SUPPORTED - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0) -#endif - { -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED - return png_ptr->IDAT_read_size; -#else - return PNG_IDAT_READ_SIZE; -#endif - } - -#ifdef PNG_WRITE_SUPPORTED - else - return png_ptr->zbuffer_size; -#endif -} - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED -/* These functions were added to libpng 1.2.6 and were enabled - * by default in libpng-1.4.0 */ -png_uint_32 PNGAPI -png_get_user_width_max (png_const_structrp png_ptr) -{ - return (png_ptr ? png_ptr->user_width_max : 0); -} - -png_uint_32 PNGAPI -png_get_user_height_max (png_const_structrp png_ptr) -{ - return (png_ptr ? png_ptr->user_height_max : 0); -} - -/* This function was added to libpng 1.4.0 */ -png_uint_32 PNGAPI -png_get_chunk_cache_max (png_const_structrp png_ptr) -{ - return (png_ptr ? png_ptr->user_chunk_cache_max : 0); -} - -/* This function was added to libpng 1.4.1 */ -png_alloc_size_t PNGAPI -png_get_chunk_malloc_max (png_const_structrp png_ptr) -{ - return (png_ptr ? png_ptr->user_chunk_malloc_max : 0); -} -#endif /* SET_USER_LIMITS */ - -/* These functions were added to libpng 1.4.0 */ -#ifdef PNG_IO_STATE_SUPPORTED -png_uint_32 PNGAPI -png_get_io_state (png_const_structrp png_ptr) -{ - return png_ptr->io_state; -} - -png_uint_32 PNGAPI -png_get_io_chunk_type (png_const_structrp png_ptr) -{ - return png_ptr->chunk_name; -} -#endif /* IO_STATE */ - -#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED -# ifdef PNG_GET_PALETTE_MAX_SUPPORTED -int PNGAPI -png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr) -{ - if (png_ptr != NULL && info_ptr != NULL) - return png_ptr->num_palette_max; - - return (-1); -} -# endif -#endif - -#endif /* READ || WRITE */ diff --git a/project/jni/png/pnginfo.h b/project/jni/png/pnginfo.h deleted file mode 100644 index d5f6149db..000000000 --- a/project/jni/png/pnginfo.h +++ /dev/null @@ -1,267 +0,0 @@ - -/* pnginfo.h - header file for PNG reference library - * - * Last changed in libpng 1.6.1 [March 28, 2013] - * Copyright (c) 1998-2002,2004,2006-2013 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - - /* png_info is a structure that holds the information in a PNG file so - * that the application can find out the characteristics of the image. - * If you are reading the file, this structure will tell you what is - * in the PNG file. If you are writing the file, fill in the information - * you want to put into the PNG file, using png_set_*() functions, then - * call png_write_info(). - * - * The names chosen should be very close to the PNG specification, so - * consult that document for information about the meaning of each field. - * - * With libpng < 0.95, it was only possible to directly set and read the - * the values in the png_info_struct, which meant that the contents and - * order of the values had to remain fixed. With libpng 0.95 and later, - * however, there are now functions that abstract the contents of - * png_info_struct from the application, so this makes it easier to use - * libpng with dynamic libraries, and even makes it possible to use - * libraries that don't have all of the libpng ancillary chunk-handing - * functionality. In libpng-1.5.0 this was moved into a separate private - * file that is not visible to applications. - * - * The following members may have allocated storage attached that should be - * cleaned up before the structure is discarded: palette, trans, text, - * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile, - * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these - * are automatically freed when the info structure is deallocated, if they were - * allocated internally by libpng. This behavior can be changed by means - * of the png_data_freer() function. - * - * More allocation details: all the chunk-reading functions that - * change these members go through the corresponding png_set_* - * functions. A function to clear these members is available: see - * png_free_data(). The png_set_* functions do not depend on being - * able to point info structure members to any of the storage they are - * passed (they make their own copies), EXCEPT that the png_set_text - * functions use the same storage passed to them in the text_ptr or - * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns - * functions do not make their own copies. - */ -#ifndef PNGINFO_H -#define PNGINFO_H - -struct png_info_def -{ - /* The following are necessary for every PNG file */ - png_uint_32 width; /* width of image in pixels (from IHDR) */ - png_uint_32 height; /* height of image in pixels (from IHDR) */ - png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */ - png_size_t rowbytes; /* bytes needed to hold an untransformed row */ - png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */ - png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */ - png_uint_16 num_trans; /* number of transparent palette color (tRNS) */ - png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */ - png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */ - /* The following three should have been named *_method not *_type */ - png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */ - png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */ - png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ - - /* The following are set by png_set_IHDR, called from the application on - * write, but the are never actually used by the write code. - */ - png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */ - png_byte pixel_depth; /* number of bits per pixel */ - png_byte spare_byte; /* to align the data, and for future use */ - -#ifdef PNG_READ_SUPPORTED - /* This is never set during write */ - png_byte signature[8]; /* magic bytes read by libpng from start of file */ -#endif - - /* The rest of the data is optional. If you are reading, check the - * valid field to see if the information in these are valid. If you - * are writing, set the valid field to those chunks you want written, - * and initialize the appropriate fields below. - */ - -#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED) - /* png_colorspace only contains 'flags' if neither GAMMA or COLORSPACE are - * defined. When COLORSPACE is switched on all the colorspace-defining - * chunks should be enabled, when GAMMA is switched on all the gamma-defining - * chunks should be enabled. If this is not done it becomes possible to read - * inconsistent PNG files and assign a probably incorrect interpretation to - * the information. (In other words, by carefully choosing which chunks to - * recognize the system configuration can select an interpretation for PNG - * files containing ambiguous data and this will result in inconsistent - * behavior between different libpng builds!) - */ - png_colorspace colorspace; -#endif - -#ifdef PNG_iCCP_SUPPORTED - /* iCCP chunk data. */ - png_charp iccp_name; /* profile name */ - png_bytep iccp_profile; /* International Color Consortium profile data */ - png_uint_32 iccp_proflen; /* ICC profile data length */ -#endif - -#ifdef PNG_TEXT_SUPPORTED - /* The tEXt, and zTXt chunks contain human-readable textual data in - * uncompressed, compressed, and optionally compressed forms, respectively. - * The data in "text" is an array of pointers to uncompressed, - * null-terminated C strings. Each chunk has a keyword that describes the - * textual data contained in that chunk. Keywords are not required to be - * unique, and the text string may be empty. Any number of text chunks may - * be in an image. - */ - int num_text; /* number of comments read or comments to write */ - int max_text; /* current size of text array */ - png_textp text; /* array of comments read or comments to write */ -#endif /* TEXT */ - -#ifdef PNG_tIME_SUPPORTED - /* The tIME chunk holds the last time the displayed image data was - * modified. See the png_time struct for the contents of this struct. - */ - png_time mod_time; -#endif - -#ifdef PNG_sBIT_SUPPORTED - /* The sBIT chunk specifies the number of significant high-order bits - * in the pixel data. Values are in the range [1, bit_depth], and are - * only specified for the channels in the pixel data. The contents of - * the low-order bits is not specified. Data is valid if - * (valid & PNG_INFO_sBIT) is non-zero. - */ - png_color_8 sig_bit; /* significant bits in color channels */ -#endif - -#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \ -defined(PNG_READ_BACKGROUND_SUPPORTED) - /* The tRNS chunk supplies transparency data for paletted images and - * other image types that don't need a full alpha channel. There are - * "num_trans" transparency values for a paletted image, stored in the - * same order as the palette colors, starting from index 0. Values - * for the data are in the range [0, 255], ranging from fully transparent - * to fully opaque, respectively. For non-paletted images, there is a - * single color specified that should be treated as fully transparent. - * Data is valid if (valid & PNG_INFO_tRNS) is non-zero. - */ - png_bytep trans_alpha; /* alpha values for paletted image */ - png_color_16 trans_color; /* transparent color for non-palette image */ -#endif - -#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - /* The bKGD chunk gives the suggested image background color if the - * display program does not have its own background color and the image - * is needs to composited onto a background before display. The colors - * in "background" are normally in the same color space/depth as the - * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero. - */ - png_color_16 background; -#endif - -#ifdef PNG_oFFs_SUPPORTED - /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards - * and downwards from the top-left corner of the display, page, or other - * application-specific co-ordinate space. See the PNG_OFFSET_ defines - * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero. - */ - png_int_32 x_offset; /* x offset on page */ - png_int_32 y_offset; /* y offset on page */ - png_byte offset_unit_type; /* offset units type */ -#endif - -#ifdef PNG_pHYs_SUPPORTED - /* The pHYs chunk gives the physical pixel density of the image for - * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_ - * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero. - */ - png_uint_32 x_pixels_per_unit; /* horizontal pixel density */ - png_uint_32 y_pixels_per_unit; /* vertical pixel density */ - png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */ -#endif - -#ifdef PNG_eXIf_SUPPORTED - int num_exif; /* Added at libpng-1.6.31 */ - png_bytep exif; -# ifdef PNG_READ_eXIf_SUPPORTED - png_bytep eXIf_buf; /* Added at libpng-1.6.32 */ -# endif -#endif - -#ifdef PNG_hIST_SUPPORTED - /* The hIST chunk contains the relative frequency or importance of the - * various palette entries, so that a viewer can intelligently select a - * reduced-color palette, if required. Data is an array of "num_palette" - * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST) - * is non-zero. - */ - png_uint_16p hist; -#endif - -#ifdef PNG_pCAL_SUPPORTED - /* The pCAL chunk describes a transformation between the stored pixel - * values and original physical data values used to create the image. - * The integer range [0, 2^bit_depth - 1] maps to the floating-point - * range given by [pcal_X0, pcal_X1], and are further transformed by a - * (possibly non-linear) transformation function given by "pcal_type" - * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_ - * defines below, and the PNG-Group's PNG extensions document for a - * complete description of the transformations and how they should be - * implemented, and for a description of the ASCII parameter strings. - * Data values are valid if (valid & PNG_INFO_pCAL) non-zero. - */ - png_charp pcal_purpose; /* pCAL chunk description string */ - png_int_32 pcal_X0; /* minimum value */ - png_int_32 pcal_X1; /* maximum value */ - png_charp pcal_units; /* Latin-1 string giving physical units */ - png_charpp pcal_params; /* ASCII strings containing parameter values */ - png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */ - png_byte pcal_nparams; /* number of parameters given in pcal_params */ -#endif - -/* New members added in libpng-1.0.6 */ - png_uint_32 free_me; /* flags items libpng is responsible for freeing */ - -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED - /* Storage for unknown chunks that the library doesn't recognize. */ - png_unknown_chunkp unknown_chunks; - - /* The type of this field is limited by the type of - * png_struct::user_chunk_cache_max, else overflow can occur. - */ - int unknown_chunks_num; -#endif - -#ifdef PNG_sPLT_SUPPORTED - /* Data on sPLT chunks (there may be more than one). */ - png_sPLT_tp splt_palettes; - int splt_palettes_num; /* Match type returned by png_get API */ -#endif - -#ifdef PNG_sCAL_SUPPORTED - /* The sCAL chunk describes the actual physical dimensions of the - * subject matter of the graphic. The chunk contains a unit specification - * a byte value, and two ASCII strings representing floating-point - * values. The values are width and height corresponsing to one pixel - * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is - * non-zero. - */ - png_byte scal_unit; /* unit of physical scale */ - png_charp scal_s_width; /* string containing height */ - png_charp scal_s_height; /* string containing width */ -#endif - -#ifdef PNG_INFO_IMAGE_SUPPORTED - /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) - non-zero */ - /* Data valid if (valid & PNG_INFO_IDAT) non-zero */ - png_bytepp row_pointers; /* the image bits */ -#endif - -}; -#endif /* PNGINFO_H */ diff --git a/project/jni/png/pngmem.c b/project/jni/png/pngmem.c deleted file mode 100644 index ff3ef7e88..000000000 --- a/project/jni/png/pngmem.c +++ /dev/null @@ -1,284 +0,0 @@ - -/* pngmem.c - stub functions for memory allocation - * - * Last changed in libpng 1.6.26 [October 20, 2016] - * Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all memory allocation. Users who - * need special memory handling are expected to supply replacement - * functions for png_malloc() and png_free(), and to use - * png_create_read_struct_2() and png_create_write_struct_2() to - * identify the replacement functions. - */ - -#include "pngpriv.h" - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) -/* Free a png_struct */ -void /* PRIVATE */ -png_destroy_png_struct(png_structrp png_ptr) -{ - if (png_ptr != NULL) - { - /* png_free might call png_error and may certainly call - * png_get_mem_ptr, so fake a temporary png_struct to support this. - */ - png_struct dummy_struct = *png_ptr; - memset(png_ptr, 0, (sizeof *png_ptr)); - png_free(&dummy_struct, png_ptr); - -# ifdef PNG_SETJMP_SUPPORTED - /* We may have a jmp_buf left to deallocate. */ - png_free_jmpbuf(&dummy_struct); -# endif - } -} - -/* Allocate memory. For reasonable files, size should never exceed - * 64K. However, zlib may allocate more than 64K if you don't tell - * it not to. See zconf.h and png.h for more information. zlib does - * need to allocate exactly 64K, so whatever you call here must - * have the ability to do that. - */ -PNG_FUNCTION(png_voidp,PNGAPI -png_calloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED) -{ - png_voidp ret; - - ret = png_malloc(png_ptr, size); - - if (ret != NULL) - memset(ret, 0, size); - - return ret; -} - -/* png_malloc_base, an internal function added at libpng 1.6.0, does the work of - * allocating memory, taking into account limits and PNG_USER_MEM_SUPPORTED. - * Checking and error handling must happen outside this routine; it returns NULL - * if the allocation cannot be done (for any reason.) - */ -PNG_FUNCTION(png_voidp /* PRIVATE */, -png_malloc_base,(png_const_structrp png_ptr, png_alloc_size_t size), - PNG_ALLOCATED) -{ - /* Moved to png_malloc_base from png_malloc_default in 1.6.0; the DOS - * allocators have also been removed in 1.6.0, so any 16-bit system now has - * to implement a user memory handler. This checks to be sure it isn't - * called with big numbers. - */ -#ifndef PNG_USER_MEM_SUPPORTED - PNG_UNUSED(png_ptr) -#endif - - /* Some compilers complain that this is always true. However, it - * can be false when integer overflow happens. - */ - if (size > 0 && size <= PNG_SIZE_MAX -# ifdef PNG_MAX_MALLOC_64K - && size <= 65536U -# endif - ) - { -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr != NULL && png_ptr->malloc_fn != NULL) - return png_ptr->malloc_fn(png_constcast(png_structrp,png_ptr), size); - - else -#endif - return malloc((size_t)size); /* checked for truncation above */ - } - - else - return NULL; -} - -#if defined(PNG_TEXT_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) ||\ - defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) -/* This is really here only to work round a spurious warning in GCC 4.6 and 4.7 - * that arises because of the checks in png_realloc_array that are repeated in - * png_malloc_array. - */ -static png_voidp -png_malloc_array_checked(png_const_structrp png_ptr, int nelements, - size_t element_size) -{ - png_alloc_size_t req = (png_alloc_size_t)nelements; /* known to be > 0 */ - - if (req <= PNG_SIZE_MAX/element_size) - return png_malloc_base(png_ptr, req * element_size); - - /* The failure case when the request is too large */ - return NULL; -} - -PNG_FUNCTION(png_voidp /* PRIVATE */, -png_malloc_array,(png_const_structrp png_ptr, int nelements, - size_t element_size),PNG_ALLOCATED) -{ - if (nelements <= 0 || element_size == 0) - png_error(png_ptr, "internal error: array alloc"); - - return png_malloc_array_checked(png_ptr, nelements, element_size); -} - -PNG_FUNCTION(png_voidp /* PRIVATE */, -png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array, - int old_elements, int add_elements, size_t element_size),PNG_ALLOCATED) -{ - /* These are internal errors: */ - if (add_elements <= 0 || element_size == 0 || old_elements < 0 || - (old_array == NULL && old_elements > 0)) - png_error(png_ptr, "internal error: array realloc"); - - /* Check for overflow on the elements count (so the caller does not have to - * check.) - */ - if (add_elements <= INT_MAX - old_elements) - { - png_voidp new_array = png_malloc_array_checked(png_ptr, - old_elements+add_elements, element_size); - - if (new_array != NULL) - { - /* Because png_malloc_array worked the size calculations below cannot - * overflow. - */ - if (old_elements > 0) - memcpy(new_array, old_array, element_size*(unsigned)old_elements); - - memset((char*)new_array + element_size*(unsigned)old_elements, 0, - element_size*(unsigned)add_elements); - - return new_array; - } - } - - return NULL; /* error */ -} -#endif /* TEXT || sPLT || STORE_UNKNOWN_CHUNKS */ - -/* Various functions that have different error handling are derived from this. - * png_malloc always exists, but if PNG_USER_MEM_SUPPORTED is defined a separate - * function png_malloc_default is also provided. - */ -PNG_FUNCTION(png_voidp,PNGAPI -png_malloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED) -{ - png_voidp ret; - - if (png_ptr == NULL) - return NULL; - - ret = png_malloc_base(png_ptr, size); - - if (ret == NULL) - png_error(png_ptr, "Out of memory"); /* 'm' means png_malloc */ - - return ret; -} - -#ifdef PNG_USER_MEM_SUPPORTED -PNG_FUNCTION(png_voidp,PNGAPI -png_malloc_default,(png_const_structrp png_ptr, png_alloc_size_t size), - PNG_ALLOCATED PNG_DEPRECATED) -{ - png_voidp ret; - - if (png_ptr == NULL) - return NULL; - - /* Passing 'NULL' here bypasses the application provided memory handler. */ - ret = png_malloc_base(NULL/*use malloc*/, size); - - if (ret == NULL) - png_error(png_ptr, "Out of Memory"); /* 'M' means png_malloc_default */ - - return ret; -} -#endif /* USER_MEM */ - -/* This function was added at libpng version 1.2.3. The png_malloc_warn() - * function will issue a png_warning and return NULL instead of issuing a - * png_error, if it fails to allocate the requested memory. - */ -PNG_FUNCTION(png_voidp,PNGAPI -png_malloc_warn,(png_const_structrp png_ptr, png_alloc_size_t size), - PNG_ALLOCATED) -{ - if (png_ptr != NULL) - { - png_voidp ret = png_malloc_base(png_ptr, size); - - if (ret != NULL) - return ret; - - png_warning(png_ptr, "Out of memory"); - } - - return NULL; -} - -/* Free a pointer allocated by png_malloc(). If ptr is NULL, return - * without taking any action. - */ -void PNGAPI -png_free(png_const_structrp png_ptr, png_voidp ptr) -{ - if (png_ptr == NULL || ptr == NULL) - return; - -#ifdef PNG_USER_MEM_SUPPORTED - if (png_ptr->free_fn != NULL) - png_ptr->free_fn(png_constcast(png_structrp,png_ptr), ptr); - - else - png_free_default(png_ptr, ptr); -} - -PNG_FUNCTION(void,PNGAPI -png_free_default,(png_const_structrp png_ptr, png_voidp ptr),PNG_DEPRECATED) -{ - if (png_ptr == NULL || ptr == NULL) - return; -#endif /* USER_MEM */ - - free(ptr); -} - -#ifdef PNG_USER_MEM_SUPPORTED -/* This function is called when the application wants to use another method - * of allocating and freeing memory. - */ -void PNGAPI -png_set_mem_fn(png_structrp png_ptr, png_voidp mem_ptr, png_malloc_ptr - malloc_fn, png_free_ptr free_fn) -{ - if (png_ptr != NULL) - { - png_ptr->mem_ptr = mem_ptr; - png_ptr->malloc_fn = malloc_fn; - png_ptr->free_fn = free_fn; - } -} - -/* This function returns a pointer to the mem_ptr associated with the user - * functions. The application should free any memory associated with this - * pointer before png_write_destroy and png_read_destroy are called. - */ -png_voidp PNGAPI -png_get_mem_ptr(png_const_structrp png_ptr) -{ - if (png_ptr == NULL) - return NULL; - - return png_ptr->mem_ptr; -} -#endif /* USER_MEM */ -#endif /* READ || WRITE */ diff --git a/project/jni/png/pngpread.c b/project/jni/png/pngpread.c deleted file mode 100644 index fbe361dc3..000000000 --- a/project/jni/png/pngpread.c +++ /dev/null @@ -1,1096 +0,0 @@ - -/* pngpread.c - read a png file in push mode - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#include "pngpriv.h" - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED - -/* Push model modes */ -#define PNG_READ_SIG_MODE 0 -#define PNG_READ_CHUNK_MODE 1 -#define PNG_READ_IDAT_MODE 2 -#define PNG_READ_tEXt_MODE 4 -#define PNG_READ_zTXt_MODE 5 -#define PNG_READ_DONE_MODE 6 -#define PNG_READ_iTXt_MODE 7 -#define PNG_ERROR_MODE 8 - -#define PNG_PUSH_SAVE_BUFFER_IF_FULL \ -if (png_ptr->push_length + 4 > png_ptr->buffer_size) \ - { png_push_save_buffer(png_ptr); return; } -#define PNG_PUSH_SAVE_BUFFER_IF_LT(N) \ -if (png_ptr->buffer_size < N) \ - { png_push_save_buffer(png_ptr); return; } - -void PNGAPI -png_process_data(png_structrp png_ptr, png_inforp info_ptr, - png_bytep buffer, png_size_t buffer_size) -{ - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_push_restore_buffer(png_ptr, buffer, buffer_size); - - while (png_ptr->buffer_size) - { - png_process_some_data(png_ptr, info_ptr); - } -} - -png_size_t PNGAPI -png_process_data_pause(png_structrp png_ptr, int save) -{ - if (png_ptr != NULL) - { - /* It's easiest for the caller if we do the save; then the caller doesn't - * have to supply the same data again: - */ - if (save != 0) - png_push_save_buffer(png_ptr); - else - { - /* This includes any pending saved bytes: */ - png_size_t remaining = png_ptr->buffer_size; - png_ptr->buffer_size = 0; - - /* So subtract the saved buffer size, unless all the data - * is actually 'saved', in which case we just return 0 - */ - if (png_ptr->save_buffer_size < remaining) - return remaining - png_ptr->save_buffer_size; - } - } - - return 0; -} - -png_uint_32 PNGAPI -png_process_data_skip(png_structrp png_ptr) -{ -/* TODO: Deprecate and remove this API. - * Somewhere the implementation of this seems to have been lost, - * or abandoned. It was only to support some internal back-door access - * to png_struct) in libpng-1.4.x. - */ - png_app_warning(png_ptr, -"png_process_data_skip is not implemented in any current version of libpng"); - return 0; -} - -/* What we do with the incoming data depends on what we were previously - * doing before we ran out of data... - */ -void /* PRIVATE */ -png_process_some_data(png_structrp png_ptr, png_inforp info_ptr) -{ - if (png_ptr == NULL) - return; - - switch (png_ptr->process_mode) - { - case PNG_READ_SIG_MODE: - { - png_push_read_sig(png_ptr, info_ptr); - break; - } - - case PNG_READ_CHUNK_MODE: - { - png_push_read_chunk(png_ptr, info_ptr); - break; - } - - case PNG_READ_IDAT_MODE: - { - png_push_read_IDAT(png_ptr); - break; - } - - default: - { - png_ptr->buffer_size = 0; - break; - } - } -} - -/* Read any remaining signature bytes from the stream and compare them with - * the correct PNG signature. It is possible that this routine is called - * with bytes already read from the signature, either because they have been - * checked by the calling application, or because of multiple calls to this - * routine. - */ -void /* PRIVATE */ -png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr) -{ - png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */ - num_to_check = 8 - num_checked; - - if (png_ptr->buffer_size < num_to_check) - { - num_to_check = png_ptr->buffer_size; - } - - png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]), - num_to_check); - png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check); - - if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check)) - { - if (num_checked < 4 && - png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4)) - png_error(png_ptr, "Not a PNG file"); - - else - png_error(png_ptr, "PNG file corrupted by ASCII conversion"); - } - else - { - if (png_ptr->sig_bytes >= 8) - { - png_ptr->process_mode = PNG_READ_CHUNK_MODE; - } - } -} - -void /* PRIVATE */ -png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr) -{ - png_uint_32 chunk_name; -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - int keep; /* unknown handling method */ -#endif - - /* First we make sure we have enough data for the 4-byte chunk name - * and the 4-byte chunk length before proceeding with decoding the - * chunk data. To fully decode each of these chunks, we also make - * sure we have enough data in the buffer for the 4-byte CRC at the - * end of every chunk (except IDAT, which is handled separately). - */ - if ((png_ptr->mode & PNG_HAVE_CHUNK_HEADER) == 0) - { - png_byte chunk_length[4]; - png_byte chunk_tag[4]; - - PNG_PUSH_SAVE_BUFFER_IF_LT(8) - png_push_fill_buffer(png_ptr, chunk_length, 4); - png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length); - png_reset_crc(png_ptr); - png_crc_read(png_ptr, chunk_tag, 4); - png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag); - png_check_chunk_name(png_ptr, png_ptr->chunk_name); - png_check_chunk_length(png_ptr, png_ptr->push_length); - png_ptr->mode |= PNG_HAVE_CHUNK_HEADER; - } - - chunk_name = png_ptr->chunk_name; - - if (chunk_name == png_IDAT) - { - if ((png_ptr->mode & PNG_AFTER_IDAT) != 0) - png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; - - /* If we reach an IDAT chunk, this means we have read all of the - * header chunks, and we can start reading the image (or if this - * is called after the image has been read - we have an error). - */ - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_error(png_ptr, "Missing IHDR before IDAT"); - - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - (png_ptr->mode & PNG_HAVE_PLTE) == 0) - png_error(png_ptr, "Missing PLTE before IDAT"); - - png_ptr->process_mode = PNG_READ_IDAT_MODE; - - if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - if ((png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) == 0) - if (png_ptr->push_length == 0) - return; - - png_ptr->mode |= PNG_HAVE_IDAT; - - if ((png_ptr->mode & PNG_AFTER_IDAT) != 0) - png_benign_error(png_ptr, "Too many IDATs found"); - } - - if (chunk_name == png_IHDR) - { - if (png_ptr->push_length != 13) - png_error(png_ptr, "Invalid IHDR length"); - - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length); - } - - else if (chunk_name == png_IEND) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length); - - png_ptr->process_mode = PNG_READ_DONE_MODE; - png_push_have_end(png_ptr, info_ptr); - } - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length, keep); - - if (chunk_name == png_PLTE) - png_ptr->mode |= PNG_HAVE_PLTE; - } -#endif - - else if (chunk_name == png_PLTE) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length); - } - - else if (chunk_name == png_IDAT) - { - png_ptr->idat_size = png_ptr->push_length; - png_ptr->process_mode = PNG_READ_IDAT_MODE; - png_push_have_info(png_ptr, info_ptr); - png_ptr->zstream.avail_out = - (uInt) PNG_ROWBYTES(png_ptr->pixel_depth, - png_ptr->iwidth) + 1; - png_ptr->zstream.next_out = png_ptr->row_buf; - return; - } - -#ifdef PNG_READ_gAMA_SUPPORTED - else if (png_ptr->chunk_name == png_gAMA) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sBIT_SUPPORTED - else if (png_ptr->chunk_name == png_sBIT) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_cHRM_SUPPORTED - else if (png_ptr->chunk_name == png_cHRM) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sRGB_SUPPORTED - else if (chunk_name == png_sRGB) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_iCCP_SUPPORTED - else if (png_ptr->chunk_name == png_iCCP) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sPLT_SUPPORTED - else if (chunk_name == png_sPLT) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_tRNS_SUPPORTED - else if (chunk_name == png_tRNS) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_bKGD_SUPPORTED - else if (chunk_name == png_bKGD) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_hIST_SUPPORTED - else if (chunk_name == png_hIST) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_pHYs_SUPPORTED - else if (chunk_name == png_pHYs) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_oFFs_SUPPORTED - else if (chunk_name == png_oFFs) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length); - } -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED - else if (chunk_name == png_pCAL) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_sCAL_SUPPORTED - else if (chunk_name == png_sCAL) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_tIME_SUPPORTED - else if (chunk_name == png_tIME) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_tEXt_SUPPORTED - else if (chunk_name == png_tEXt) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_zTXt_SUPPORTED - else if (chunk_name == png_zTXt) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length); - } - -#endif -#ifdef PNG_READ_iTXt_SUPPORTED - else if (chunk_name == png_iTXt) - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length); - } -#endif - - else - { - PNG_PUSH_SAVE_BUFFER_IF_FULL - png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length, - PNG_HANDLE_CHUNK_AS_DEFAULT); - } - - png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER; -} - -void PNGCBAPI -png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length) -{ - png_bytep ptr; - - if (png_ptr == NULL) - return; - - ptr = buffer; - if (png_ptr->save_buffer_size != 0) - { - png_size_t save_size; - - if (length < png_ptr->save_buffer_size) - save_size = length; - - else - save_size = png_ptr->save_buffer_size; - - memcpy(ptr, png_ptr->save_buffer_ptr, save_size); - length -= save_size; - ptr += save_size; - png_ptr->buffer_size -= save_size; - png_ptr->save_buffer_size -= save_size; - png_ptr->save_buffer_ptr += save_size; - } - if (length != 0 && png_ptr->current_buffer_size != 0) - { - png_size_t save_size; - - if (length < png_ptr->current_buffer_size) - save_size = length; - - else - save_size = png_ptr->current_buffer_size; - - memcpy(ptr, png_ptr->current_buffer_ptr, save_size); - png_ptr->buffer_size -= save_size; - png_ptr->current_buffer_size -= save_size; - png_ptr->current_buffer_ptr += save_size; - } -} - -void /* PRIVATE */ -png_push_save_buffer(png_structrp png_ptr) -{ - if (png_ptr->save_buffer_size != 0) - { - if (png_ptr->save_buffer_ptr != png_ptr->save_buffer) - { - png_size_t i, istop; - png_bytep sp; - png_bytep dp; - - istop = png_ptr->save_buffer_size; - for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer; - i < istop; i++, sp++, dp++) - { - *dp = *sp; - } - } - } - if (png_ptr->save_buffer_size + png_ptr->current_buffer_size > - png_ptr->save_buffer_max) - { - png_size_t new_max; - png_bytep old_buffer; - - if (png_ptr->save_buffer_size > PNG_SIZE_MAX - - (png_ptr->current_buffer_size + 256)) - { - png_error(png_ptr, "Potential overflow of save_buffer"); - } - - new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256; - old_buffer = png_ptr->save_buffer; - png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr, - (png_size_t)new_max); - - if (png_ptr->save_buffer == NULL) - { - png_free(png_ptr, old_buffer); - png_error(png_ptr, "Insufficient memory for save_buffer"); - } - - if (old_buffer) - memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size); - else if (png_ptr->save_buffer_size) - png_error(png_ptr, "save_buffer error"); - png_free(png_ptr, old_buffer); - png_ptr->save_buffer_max = new_max; - } - if (png_ptr->current_buffer_size) - { - memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size, - png_ptr->current_buffer_ptr, png_ptr->current_buffer_size); - png_ptr->save_buffer_size += png_ptr->current_buffer_size; - png_ptr->current_buffer_size = 0; - } - png_ptr->save_buffer_ptr = png_ptr->save_buffer; - png_ptr->buffer_size = 0; -} - -void /* PRIVATE */ -png_push_restore_buffer(png_structrp png_ptr, png_bytep buffer, - png_size_t buffer_length) -{ - png_ptr->current_buffer = buffer; - png_ptr->current_buffer_size = buffer_length; - png_ptr->buffer_size = buffer_length + png_ptr->save_buffer_size; - png_ptr->current_buffer_ptr = png_ptr->current_buffer; -} - -void /* PRIVATE */ -png_push_read_IDAT(png_structrp png_ptr) -{ - if ((png_ptr->mode & PNG_HAVE_CHUNK_HEADER) == 0) - { - png_byte chunk_length[4]; - png_byte chunk_tag[4]; - - /* TODO: this code can be commoned up with the same code in push_read */ - PNG_PUSH_SAVE_BUFFER_IF_LT(8) - png_push_fill_buffer(png_ptr, chunk_length, 4); - png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length); - png_reset_crc(png_ptr); - png_crc_read(png_ptr, chunk_tag, 4); - png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag); - png_ptr->mode |= PNG_HAVE_CHUNK_HEADER; - - if (png_ptr->chunk_name != png_IDAT) - { - png_ptr->process_mode = PNG_READ_CHUNK_MODE; - - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) - png_error(png_ptr, "Not enough compressed data"); - - return; - } - - png_ptr->idat_size = png_ptr->push_length; - } - - if (png_ptr->idat_size != 0 && png_ptr->save_buffer_size != 0) - { - png_size_t save_size = png_ptr->save_buffer_size; - png_uint_32 idat_size = png_ptr->idat_size; - - /* We want the smaller of 'idat_size' and 'current_buffer_size', but they - * are of different types and we don't know which variable has the fewest - * bits. Carefully select the smaller and cast it to the type of the - * larger - this cannot overflow. Do not cast in the following test - it - * will break on either 16-bit or 64-bit platforms. - */ - if (idat_size < save_size) - save_size = (png_size_t)idat_size; - - else - idat_size = (png_uint_32)save_size; - - png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size); - - png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size); - - png_ptr->idat_size -= idat_size; - png_ptr->buffer_size -= save_size; - png_ptr->save_buffer_size -= save_size; - png_ptr->save_buffer_ptr += save_size; - } - - if (png_ptr->idat_size != 0 && png_ptr->current_buffer_size != 0) - { - png_size_t save_size = png_ptr->current_buffer_size; - png_uint_32 idat_size = png_ptr->idat_size; - - /* We want the smaller of 'idat_size' and 'current_buffer_size', but they - * are of different types and we don't know which variable has the fewest - * bits. Carefully select the smaller and cast it to the type of the - * larger - this cannot overflow. - */ - if (idat_size < save_size) - save_size = (png_size_t)idat_size; - - else - idat_size = (png_uint_32)save_size; - - png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size); - - png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size); - - png_ptr->idat_size -= idat_size; - png_ptr->buffer_size -= save_size; - png_ptr->current_buffer_size -= save_size; - png_ptr->current_buffer_ptr += save_size; - } - - if (png_ptr->idat_size == 0) - { - PNG_PUSH_SAVE_BUFFER_IF_LT(4) - png_crc_finish(png_ptr, 0); - png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER; - png_ptr->mode |= PNG_AFTER_IDAT; - png_ptr->zowner = 0; - } -} - -void /* PRIVATE */ -png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer, - png_size_t buffer_length) -{ - /* The caller checks for a non-zero buffer length. */ - if (!(buffer_length > 0) || buffer == NULL) - png_error(png_ptr, "No IDAT data (internal error)"); - - /* This routine must process all the data it has been given - * before returning, calling the row callback as required to - * handle the uncompressed results. - */ - png_ptr->zstream.next_in = buffer; - /* TODO: WARNING: TRUNCATION ERROR: DANGER WILL ROBINSON: */ - png_ptr->zstream.avail_in = (uInt)buffer_length; - - /* Keep going until the decompressed data is all processed - * or the stream marked as finished. - */ - while (png_ptr->zstream.avail_in > 0 && - (png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) - { - int ret; - - /* We have data for zlib, but we must check that zlib - * has someplace to put the results. It doesn't matter - * if we don't expect any results -- it may be the input - * data is just the LZ end code. - */ - if (!(png_ptr->zstream.avail_out > 0)) - { - /* TODO: WARNING: TRUNCATION ERROR: DANGER WILL ROBINSON: */ - png_ptr->zstream.avail_out = (uInt)(PNG_ROWBYTES(png_ptr->pixel_depth, - png_ptr->iwidth) + 1); - - png_ptr->zstream.next_out = png_ptr->row_buf; - } - - /* Using Z_SYNC_FLUSH here means that an unterminated - * LZ stream (a stream with a missing end code) can still - * be handled, otherwise (Z_NO_FLUSH) a future zlib - * implementation might defer output and therefore - * change the current behavior (see comments in inflate.c - * for why this doesn't happen at present with zlib 1.2.5). - */ - ret = PNG_INFLATE(png_ptr, Z_SYNC_FLUSH); - - /* Check for any failure before proceeding. */ - if (ret != Z_OK && ret != Z_STREAM_END) - { - /* Terminate the decompression. */ - png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; - png_ptr->zowner = 0; - - /* This may be a truncated stream (missing or - * damaged end code). Treat that as a warning. - */ - if (png_ptr->row_number >= png_ptr->num_rows || - png_ptr->pass > 6) - png_warning(png_ptr, "Truncated compressed data in IDAT"); - - else - { - if (ret == Z_DATA_ERROR) - png_benign_error(png_ptr, "IDAT: ADLER32 checksum mismatch"); - else - png_error(png_ptr, "Decompression error in IDAT"); - } - - /* Skip the check on unprocessed input */ - return; - } - - /* Did inflate output any data? */ - if (png_ptr->zstream.next_out != png_ptr->row_buf) - { - /* Is this unexpected data after the last row? - * If it is, artificially terminate the LZ output - * here. - */ - if (png_ptr->row_number >= png_ptr->num_rows || - png_ptr->pass > 6) - { - /* Extra data. */ - png_warning(png_ptr, "Extra compressed data in IDAT"); - png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; - png_ptr->zowner = 0; - - /* Do no more processing; skip the unprocessed - * input check below. - */ - return; - } - - /* Do we have a complete row? */ - if (png_ptr->zstream.avail_out == 0) - png_push_process_row(png_ptr); - } - - /* And check for the end of the stream. */ - if (ret == Z_STREAM_END) - png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; - } - - /* All the data should have been processed, if anything - * is left at this point we have bytes of IDAT data - * after the zlib end code. - */ - if (png_ptr->zstream.avail_in > 0) - png_warning(png_ptr, "Extra compression data in IDAT"); -} - -void /* PRIVATE */ -png_push_process_row(png_structrp png_ptr) -{ - /* 1.5.6: row_info moved out of png_struct to a local here. */ - png_row_info row_info; - - row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */ - row_info.color_type = png_ptr->color_type; - row_info.bit_depth = png_ptr->bit_depth; - row_info.channels = png_ptr->channels; - row_info.pixel_depth = png_ptr->pixel_depth; - row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width); - - if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE) - { - if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST) - png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1, - png_ptr->prev_row + 1, png_ptr->row_buf[0]); - else - png_error(png_ptr, "bad adaptive filter value"); - } - - /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before - * 1.5.6, while the buffer really is this big in current versions of libpng - * it may not be in the future, so this was changed just to copy the - * interlaced row count: - */ - memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1); - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED - if (png_ptr->transformations != 0) - png_do_read_transformations(png_ptr, &row_info); -#endif - - /* The transformed pixel depth should match the depth now in row_info. */ - if (png_ptr->transformed_pixel_depth == 0) - { - png_ptr->transformed_pixel_depth = row_info.pixel_depth; - if (row_info.pixel_depth > png_ptr->maximum_pixel_depth) - png_error(png_ptr, "progressive row overflow"); - } - - else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth) - png_error(png_ptr, "internal progressive row size calculation error"); - - -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Expand interlaced rows to full size */ - if (png_ptr->interlaced != 0 && - (png_ptr->transformations & PNG_INTERLACE) != 0) - { - if (png_ptr->pass < 6) - png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass, - png_ptr->transformations); - - switch (png_ptr->pass) - { - case 0: - { - int i; - for (i = 0; i < 8 && png_ptr->pass == 0; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */ - } - - if (png_ptr->pass == 2) /* Pass 1 might be empty */ - { - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - } - - if (png_ptr->pass == 4 && png_ptr->height <= 4) - { - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - } - - if (png_ptr->pass == 6 && png_ptr->height <= 4) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - - break; - } - - case 1: - { - int i; - for (i = 0; i < 8 && png_ptr->pass == 1; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 2) /* Skip top 4 generated rows */ - { - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - } - - break; - } - - case 2: - { - int i; - - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - for (i = 0; i < 4 && png_ptr->pass == 2; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 4) /* Pass 3 might be empty */ - { - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - } - - break; - } - - case 3: - { - int i; - - for (i = 0; i < 4 && png_ptr->pass == 3; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 4) /* Skip top two generated rows */ - { - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - } - - break; - } - - case 4: - { - int i; - - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - for (i = 0; i < 2 && png_ptr->pass == 4; i++) - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 6) /* Pass 5 might be empty */ - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - - break; - } - - case 5: - { - int i; - - for (i = 0; i < 2 && png_ptr->pass == 5; i++) - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } - - if (png_ptr->pass == 6) /* Skip top generated row */ - { - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - - break; - } - - default: - case 6: - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - - if (png_ptr->pass != 6) - break; - - png_push_have_row(png_ptr, NULL); - png_read_push_finish_row(png_ptr); - } - } - } - else -#endif - { - png_push_have_row(png_ptr, png_ptr->row_buf + 1); - png_read_push_finish_row(png_ptr); - } -} - -void /* PRIVATE */ -png_read_push_finish_row(png_structrp png_ptr) -{ -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - static PNG_CONST png_byte png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - static PNG_CONST png_byte png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - static PNG_CONST png_byte png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - static PNG_CONST png_byte png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}; - - /* Height of interlace block. This is not currently used - if you need - * it, uncomment it here and in png.h - static PNG_CONST png_byte png_pass_height[] = {8, 8, 4, 4, 2, 2, 1}; - */ -#endif - - png_ptr->row_number++; - if (png_ptr->row_number < png_ptr->num_rows) - return; - -#ifdef PNG_READ_INTERLACING_SUPPORTED - if (png_ptr->interlaced != 0) - { - png_ptr->row_number = 0; - memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); - - do - { - png_ptr->pass++; - if ((png_ptr->pass == 1 && png_ptr->width < 5) || - (png_ptr->pass == 3 && png_ptr->width < 3) || - (png_ptr->pass == 5 && png_ptr->width < 2)) - png_ptr->pass++; - - if (png_ptr->pass > 7) - png_ptr->pass--; - - if (png_ptr->pass >= 7) - break; - - png_ptr->iwidth = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - - if ((png_ptr->transformations & PNG_INTERLACE) != 0) - break; - - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - - } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0); - } -#endif /* READ_INTERLACING */ -} - -void /* PRIVATE */ -png_push_have_info(png_structrp png_ptr, png_inforp info_ptr) -{ - if (png_ptr->info_fn != NULL) - (*(png_ptr->info_fn))(png_ptr, info_ptr); -} - -void /* PRIVATE */ -png_push_have_end(png_structrp png_ptr, png_inforp info_ptr) -{ - if (png_ptr->end_fn != NULL) - (*(png_ptr->end_fn))(png_ptr, info_ptr); -} - -void /* PRIVATE */ -png_push_have_row(png_structrp png_ptr, png_bytep row) -{ - if (png_ptr->row_fn != NULL) - (*(png_ptr->row_fn))(png_ptr, row, png_ptr->row_number, - (int)png_ptr->pass); -} - -#ifdef PNG_READ_INTERLACING_SUPPORTED -void PNGAPI -png_progressive_combine_row(png_const_structrp png_ptr, png_bytep old_row, - png_const_bytep new_row) -{ - if (png_ptr == NULL) - return; - - /* new_row is a flag here - if it is NULL then the app callback was called - * from an empty row (see the calls to png_struct::row_fn below), otherwise - * it must be png_ptr->row_buf+1 - */ - if (new_row != NULL) - png_combine_row(png_ptr, old_row, 1/*blocky display*/); -} -#endif /* READ_INTERLACING */ - -void PNGAPI -png_set_progressive_read_fn(png_structrp png_ptr, png_voidp progressive_ptr, - png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, - png_progressive_end_ptr end_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->info_fn = info_fn; - png_ptr->row_fn = row_fn; - png_ptr->end_fn = end_fn; - - png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer); -} - -png_voidp PNGAPI -png_get_progressive_ptr(png_const_structrp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); - - return png_ptr->io_ptr; -} -#endif /* PROGRESSIVE_READ */ diff --git a/project/jni/png/pngpriv.h b/project/jni/png/pngpriv.h deleted file mode 100644 index 1f2e90f2b..000000000 --- a/project/jni/png/pngpriv.h +++ /dev/null @@ -1,2120 +0,0 @@ - -/* pngpriv.h - private declarations for use inside libpng - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -/* The symbols declared in this file (including the functions declared - * as extern) are PRIVATE. They are not part of the libpng public - * interface, and are not recommended for use by regular applications. - * Some of them may become public in the future; others may stay private, - * change in an incompatible way, or even disappear. - * Although the libpng users are not forbidden to include this header, - * they should be well aware of the issues that may arise from doing so. - */ - -#ifndef PNGPRIV_H -#define PNGPRIV_H - -/* Feature Test Macros. The following are defined here to ensure that correctly - * implemented libraries reveal the APIs libpng needs to build and hide those - * that are not needed and potentially damaging to the compilation. - * - * Feature Test Macros must be defined before any system header is included (see - * POSIX 1003.1 2.8.2 "POSIX Symbols." - * - * These macros only have an effect if the operating system supports either - * POSIX 1003.1 or C99, or both. On other operating systems (particularly - * Windows/Visual Studio) there is no effect; the OS specific tests below are - * still required (as of 2011-05-02.) - */ -#ifndef _POSIX_SOURCE -# define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */ -#endif - -#ifndef PNG_VERSION_INFO_ONLY -/* Standard library headers not required by png.h: */ -# include -# include -#endif - -#define PNGLIB_BUILD /*libpng is being built, not used*/ - -/* If HAVE_CONFIG_H is defined during the build then the build system must - * provide an appropriate "config.h" file on the include path. The header file - * must provide definitions as required below (search for "HAVE_CONFIG_H"); - * see configure.ac for more details of the requirements. The macro - * "PNG_NO_CONFIG_H" is provided for maintainers to test for dependencies on - * 'configure'; define this macro to prevent the configure build including the - * configure generated config.h. Libpng is expected to compile without *any* - * special build system support on a reasonably ANSI-C compliant system. - */ -#if defined(HAVE_CONFIG_H) && !defined(PNG_NO_CONFIG_H) -# include - - /* Pick up the definition of 'restrict' from config.h if it was read: */ -# define PNG_RESTRICT restrict -#endif - -/* To support symbol prefixing it is necessary to know *before* including png.h - * whether the fixed point (and maybe other) APIs are exported, because if they - * are not internal definitions may be required. This is handled below just - * before png.h is included, but load the configuration now if it is available. - */ -#ifndef PNGLCONF_H -# include "pnglibconf.h" -#endif - -/* Local renames may change non-exported API functions from png.h */ -#if defined(PNG_PREFIX) && !defined(PNGPREFIX_H) -# include "pngprefix.h" -#endif - -#ifdef PNG_USER_CONFIG -# include "pngusr.h" - /* These should have been defined in pngusr.h */ -# ifndef PNG_USER_PRIVATEBUILD -# define PNG_USER_PRIVATEBUILD "Custom libpng build" -# endif -# ifndef PNG_USER_DLLFNAME_POSTFIX -# define PNG_USER_DLLFNAME_POSTFIX "Cb" -# endif -#endif - -/* Compile time options. - * ===================== - * In a multi-arch build the compiler may compile the code several times for the - * same object module, producing different binaries for different architectures. - * When this happens configure-time setting of the target host options cannot be - * done and this interferes with the handling of the ARM NEON optimizations, and - * possibly other similar optimizations. Put additional tests here; in general - * this is needed when the same option can be changed at both compile time and - * run time depending on the target OS (i.e. iOS vs Android.) - * - * NOTE: symbol prefixing does not pass $(CFLAGS) to the preprocessor, because - * this is not possible with certain compilers (Oracle SUN OS CC), as a result - * it is necessary to ensure that all extern functions that *might* be used - * regardless of $(CFLAGS) get declared in this file. The test on __ARM_NEON__ - * below is one example of this behavior because it is controlled by the - * presence or not of -mfpu=neon on the GCC command line, it is possible to do - * this in $(CC), e.g. "CC=gcc -mfpu=neon", but people who build libpng rarely - * do this. - */ -#ifndef PNG_ARM_NEON_OPT - /* ARM NEON optimizations are being controlled by the compiler settings, - * typically the target FPU. If the FPU has been set to NEON (-mfpu=neon - * with GCC) then the compiler will define __ARM_NEON__ and we can rely - * unconditionally on NEON instructions not crashing, otherwise we must - * disable use of NEON instructions. - * - * NOTE: at present these optimizations depend on 'ALIGNED_MEMORY', so they - * can only be turned on automatically if that is supported too. If - * PNG_ARM_NEON_OPT is set in CPPFLAGS (to >0) then arm/arm_init.c will fail - * to compile with an appropriate #error if ALIGNED_MEMORY has been turned - * off. - * - * Note that gcc-4.9 defines __ARM_NEON instead of the deprecated - * __ARM_NEON__, so we check both variants. - * - * To disable ARM_NEON optimizations entirely, and skip compiling the - * associated assembler code, pass --enable-arm-neon=no to configure - * or put -DPNG_ARM_NEON_OPT=0 in CPPFLAGS. - */ -# if (defined(__ARM_NEON__) || defined(__ARM_NEON)) && \ - defined(PNG_ALIGNED_MEMORY_SUPPORTED) -# define PNG_ARM_NEON_OPT 2 -# else -# define PNG_ARM_NEON_OPT 0 -# endif -#endif - -#if PNG_ARM_NEON_OPT > 0 - /* NEON optimizations are to be at least considered by libpng, so enable the - * callbacks to do this. - */ -# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_neon - - /* By default the 'intrinsics' code in arm/filter_neon_intrinsics.c is used - * if possible - if __ARM_NEON__ is set and the compiler version is not known - * to be broken. This is controlled by PNG_ARM_NEON_IMPLEMENTATION which can - * be: - * - * 1 The intrinsics code (the default with __ARM_NEON__) - * 2 The hand coded assembler (the default without __ARM_NEON__) - * - * It is possible to set PNG_ARM_NEON_IMPLEMENTATION in CPPFLAGS, however - * this is *NOT* supported and may cease to work even after a minor revision - * to libpng. It *is* valid to do this for testing purposes, e.g. speed - * testing or a new compiler, but the results should be communicated to the - * libpng implementation list for incorporation in the next minor release. - */ -# ifndef PNG_ARM_NEON_IMPLEMENTATION -# if defined(__ARM_NEON__) || defined(__ARM_NEON) -# if defined(__clang__) - /* At present it is unknown by the libpng developers which versions - * of clang support the intrinsics, however some or perhaps all - * versions do not work with the assembler so this may be - * irrelevant, so just use the default (do nothing here.) - */ -# elif defined(__GNUC__) - /* GCC 4.5.4 NEON support is known to be broken. 4.6.3 is known to - * work, so if this *is* GCC, or G++, look for a version >4.5 - */ -# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6) -# define PNG_ARM_NEON_IMPLEMENTATION 2 -# endif /* no GNUC support */ -# endif /* __GNUC__ */ -# else /* !defined __ARM_NEON__ */ - /* The 'intrinsics' code simply won't compile without this -mfpu=neon: - */ -# define PNG_ARM_NEON_IMPLEMENTATION 2 -# endif /* __ARM_NEON__ */ -# endif /* !PNG_ARM_NEON_IMPLEMENTATION */ - -# ifndef PNG_ARM_NEON_IMPLEMENTATION - /* Use the intrinsics code by default. */ -# define PNG_ARM_NEON_IMPLEMENTATION 1 -# endif -#endif /* PNG_ARM_NEON_OPT > 0 */ - -#ifndef PNG_MIPS_MSA_OPT -# if defined(__mips_msa) && (__mips_isa_rev >= 5) && defined(PNG_ALIGNED_MEMORY_SUPPORTED) -# define PNG_MIPS_MSA_OPT 2 -# else -# define PNG_MIPS_MSA_OPT 0 -# endif -#endif - -#ifndef PNG_POWERPC_VSX_OPT -# if defined(__PPC64__) && defined(__ALTIVEC__) && defined(__VSX__) -# define PNG_POWERPC_VSX_OPT 2 -# else -# define PNG_POWERPC_VSX_OPT 0 -# endif -#endif - -#ifndef PNG_INTEL_SSE_OPT -# ifdef PNG_INTEL_SSE - /* Only check for SSE if the build configuration has been modified to - * enable SSE optimizations. This means that these optimizations will - * be off by default. See contrib/intel for more details. - */ -# if defined(__SSE4_1__) || defined(__AVX__) || defined(__SSSE3__) || \ - defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \ - (defined(_M_IX86_FP) && _M_IX86_FP >= 2) -# define PNG_INTEL_SSE_OPT 1 -# endif -# endif -#endif - -#if PNG_INTEL_SSE_OPT > 0 -# ifndef PNG_INTEL_SSE_IMPLEMENTATION -# if defined(__SSE4_1__) || defined(__AVX__) - /* We are not actually using AVX, but checking for AVX is the best - way we can detect SSE4.1 and SSSE3 on MSVC. - */ -# define PNG_INTEL_SSE_IMPLEMENTATION 3 -# elif defined(__SSSE3__) -# define PNG_INTEL_SSE_IMPLEMENTATION 2 -# elif defined(__SSE2__) || defined(_M_X64) || defined(_M_AMD64) || \ - (defined(_M_IX86_FP) && _M_IX86_FP >= 2) -# define PNG_INTEL_SSE_IMPLEMENTATION 1 -# else -# define PNG_INTEL_SSE_IMPLEMENTATION 0 -# endif -# endif - -# if PNG_INTEL_SSE_IMPLEMENTATION > 0 -# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_sse2 -# endif -#endif - -#if PNG_MIPS_MSA_OPT > 0 -# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_msa -# ifndef PNG_MIPS_MSA_IMPLEMENTATION -# if defined(__mips_msa) -# if defined(__clang__) -# elif defined(__GNUC__) -# if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 7) -# define PNG_MIPS_MSA_IMPLEMENTATION 2 -# endif /* no GNUC support */ -# endif /* __GNUC__ */ -# else /* !defined __mips_msa */ -# define PNG_MIPS_MSA_IMPLEMENTATION 2 -# endif /* __mips_msa */ -# endif /* !PNG_MIPS_MSA_IMPLEMENTATION */ - -# ifndef PNG_MIPS_MSA_IMPLEMENTATION -# define PNG_MIPS_MSA_IMPLEMENTATION 1 -# endif -#endif /* PNG_MIPS_MSA_OPT > 0 */ - -#if PNG_POWERPC_VSX_OPT > 0 -# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_vsx -# define PNG_POWERPC_VSX_IMPLEMENTATION 1 -#endif - - -/* Is this a build of a DLL where compilation of the object modules requires - * different preprocessor settings to those required for a simple library? If - * so PNG_BUILD_DLL must be set. - * - * If libpng is used inside a DLL but that DLL does not export the libpng APIs - * PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a - * static library of libpng then link the DLL against that. - */ -#ifndef PNG_BUILD_DLL -# ifdef DLL_EXPORT - /* This is set by libtool when files are compiled for a DLL; libtool - * always compiles twice, even on systems where it isn't necessary. Set - * PNG_BUILD_DLL in case it is necessary: - */ -# define PNG_BUILD_DLL -# else -# ifdef _WINDLL - /* This is set by the Microsoft Visual Studio IDE in projects that - * build a DLL. It can't easily be removed from those projects (it - * isn't visible in the Visual Studio UI) so it is a fairly reliable - * indication that PNG_IMPEXP needs to be set to the DLL export - * attributes. - */ -# define PNG_BUILD_DLL -# else -# ifdef __DLL__ - /* This is set by the Borland C system when compiling for a DLL - * (as above.) - */ -# define PNG_BUILD_DLL -# else - /* Add additional compiler cases here. */ -# endif -# endif -# endif -#endif /* Setting PNG_BUILD_DLL if required */ - -/* See pngconf.h for more details: the builder of the library may set this on - * the command line to the right thing for the specific compilation system or it - * may be automagically set above (at present we know of no system where it does - * need to be set on the command line.) - * - * PNG_IMPEXP must be set here when building the library to prevent pngconf.h - * setting it to the "import" setting for a DLL build. - */ -#ifndef PNG_IMPEXP -# ifdef PNG_BUILD_DLL -# define PNG_IMPEXP PNG_DLL_EXPORT -# else - /* Not building a DLL, or the DLL doesn't require specific export - * definitions. - */ -# define PNG_IMPEXP -# endif -#endif - -/* No warnings for private or deprecated functions in the build: */ -#ifndef PNG_DEPRECATED -# define PNG_DEPRECATED -#endif -#ifndef PNG_PRIVATE -# define PNG_PRIVATE -#endif - -/* Symbol preprocessing support. - * - * To enable listing global, but internal, symbols the following macros should - * always be used to declare an extern data or function object in this file. - */ -#ifndef PNG_INTERNAL_DATA -# define PNG_INTERNAL_DATA(type, name, array) PNG_LINKAGE_DATA type name array -#endif - -#ifndef PNG_INTERNAL_FUNCTION -# define PNG_INTERNAL_FUNCTION(type, name, args, attributes)\ - PNG_LINKAGE_FUNCTION PNG_FUNCTION(type, name, args, PNG_EMPTY attributes) -#endif - -#ifndef PNG_INTERNAL_CALLBACK -# define PNG_INTERNAL_CALLBACK(type, name, args, attributes)\ - PNG_LINKAGE_CALLBACK PNG_FUNCTION(type, (PNGCBAPI name), args,\ - PNG_EMPTY attributes) -#endif - -/* If floating or fixed point APIs are disabled they may still be compiled - * internally. To handle this make sure they are declared as the appropriate - * internal extern function (otherwise the symbol prefixing stuff won't work and - * the functions will be used without definitions.) - * - * NOTE: although all the API functions are declared here they are not all - * actually built! Because the declarations are still made it is necessary to - * fake out types that they depend on. - */ -#ifndef PNG_FP_EXPORT -# ifndef PNG_FLOATING_POINT_SUPPORTED -# define PNG_FP_EXPORT(ordinal, type, name, args)\ - PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY); -# ifndef PNG_VERSION_INFO_ONLY - typedef struct png_incomplete png_double; - typedef png_double* png_doublep; - typedef const png_double* png_const_doublep; - typedef png_double** png_doublepp; -# endif -# endif -#endif -#ifndef PNG_FIXED_EXPORT -# ifndef PNG_FIXED_POINT_SUPPORTED -# define PNG_FIXED_EXPORT(ordinal, type, name, args)\ - PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY); -# endif -#endif - -#include "png.h" - -/* pngconf.h does not set PNG_DLL_EXPORT unless it is required, so: */ -#ifndef PNG_DLL_EXPORT -# define PNG_DLL_EXPORT -#endif - -/* This is a global switch to set the compilation for an installed system - * (a release build). It can be set for testing debug builds to ensure that - * they will compile when the build type is switched to RC or STABLE, the - * default is just to use PNG_LIBPNG_BUILD_BASE_TYPE. Set this in CPPFLAGS - * with either: - * - * -DPNG_RELEASE_BUILD Turns on the release compile path - * -DPNG_RELEASE_BUILD=0 Turns it off - * or in your pngusr.h with - * #define PNG_RELEASE_BUILD=1 Turns on the release compile path - * #define PNG_RELEASE_BUILD=0 Turns it off - */ -#ifndef PNG_RELEASE_BUILD -# define PNG_RELEASE_BUILD (PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC) -#endif - -/* SECURITY and SAFETY: - * - * libpng is built with support for internal limits on image dimensions and - * memory usage. These are documented in scripts/pnglibconf.dfa of the - * source and recorded in the machine generated header file pnglibconf.h. - */ - -/* If you are running on a machine where you cannot allocate more - * than 64K of memory at once, uncomment this. While libpng will not - * normally need that much memory in a chunk (unless you load up a very - * large file), zlib needs to know how big of a chunk it can use, and - * libpng thus makes sure to check any memory allocation to verify it - * will fit into memory. - * - * zlib provides 'MAXSEG_64K' which, if defined, indicates the - * same limit and pngconf.h (already included) sets the limit - * if certain operating systems are detected. - */ -#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) -# define PNG_MAX_MALLOC_64K -#endif - -#ifndef PNG_UNUSED -/* Unused formal parameter warnings are silenced using the following macro - * which is expected to have no bad effects on performance (optimizing - * compilers will probably remove it entirely). Note that if you replace - * it with something other than whitespace, you must include the terminating - * semicolon. - */ -# define PNG_UNUSED(param) (void)param; -#endif - -/* Just a little check that someone hasn't tried to define something - * contradictory. - */ -#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) -# undef PNG_ZBUF_SIZE -# define PNG_ZBUF_SIZE 65536L -#endif - -/* If warnings or errors are turned off the code is disabled or redirected here. - * From 1.5.4 functions have been added to allow very limited formatting of - * error and warning messages - this code will also be disabled here. - */ -#ifdef PNG_WARNINGS_SUPPORTED -# define PNG_WARNING_PARAMETERS(p) png_warning_parameters p; -#else -# define png_warning_parameter(p,number,string) ((void)0) -# define png_warning_parameter_unsigned(p,number,format,value) ((void)0) -# define png_warning_parameter_signed(p,number,format,value) ((void)0) -# define png_formatted_warning(pp,p,message) ((void)(pp)) -# define PNG_WARNING_PARAMETERS(p) -#endif -#ifndef PNG_ERROR_TEXT_SUPPORTED -# define png_fixed_error(s1,s2) png_err(s1) -#endif - -/* Some fixed point APIs are still required even if not exported because - * they get used by the corresponding floating point APIs. This magic - * deals with this: - */ -#ifdef PNG_FIXED_POINT_SUPPORTED -# define PNGFAPI PNGAPI -#else -# define PNGFAPI /* PRIVATE */ -#endif - -#ifndef PNG_VERSION_INFO_ONLY -/* Other defines specific to compilers can go here. Try to keep - * them inside an appropriate ifdef/endif pair for portability. - */ - -/* C allows up-casts from (void*) to any pointer and (const void*) to any - * pointer to a const object. C++ regards this as a type error and requires an - * explicit, static, cast and provides the static_cast<> rune to ensure that - * const is not cast away. - */ -#ifdef __cplusplus -# define png_voidcast(type, value) static_cast(value) -# define png_constcast(type, value) const_cast(value) -# define png_aligncast(type, value) \ - static_cast(static_cast(value)) -# define png_aligncastconst(type, value) \ - static_cast(static_cast(value)) -#else -# define png_voidcast(type, value) (value) -# ifdef _WIN64 -# ifdef __GNUC__ - typedef unsigned long long png_ptruint; -# else - typedef unsigned __int64 png_ptruint; -# endif -# else - typedef unsigned long png_ptruint; -# endif -# define png_constcast(type, value) ((type)(png_ptruint)(const void*)(value)) -# define png_aligncast(type, value) ((void*)(value)) -# define png_aligncastconst(type, value) ((const void*)(value)) -#endif /* __cplusplus */ - -#if defined(PNG_FLOATING_POINT_SUPPORTED) ||\ - defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) - /* png.c requires the following ANSI-C constants if the conversion of - * floating point to ASCII is implemented therein: - * - * DBL_DIG Maximum number of decimal digits (can be set to any constant) - * DBL_MIN Smallest normalized fp number (can be set to an arbitrary value) - * DBL_MAX Maximum floating point number (can be set to an arbitrary value) - */ -# include - -# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ - defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) - /* We need to check that hasn't already been included earlier - * as it seems it doesn't agree with , yet we should really use - * if possible. - */ -# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) -# include -# endif -# else -# include -# endif -# if defined(_AMIGA) && defined(__SASC) && defined(_M68881) - /* Amiga SAS/C: We must include builtin FPU functions when compiling using - * MATH=68881 - */ -# include -# endif -#endif - -/* This provides the non-ANSI (far) memory allocation routines. */ -#if defined(__TURBOC__) && defined(__MSDOS__) -# include -# include -#endif - -#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \ - defined(_WIN32) || defined(__WIN32__) -# include /* defines _WINDOWS_ macro */ -#endif -#endif /* PNG_VERSION_INFO_ONLY */ - -/* Moved here around 1.5.0beta36 from pngconf.h */ -/* Users may want to use these so they are not private. Any library - * functions that are passed far data must be model-independent. - */ - -/* Memory model/platform independent fns */ -#ifndef PNG_ABORT -# ifdef _WINDOWS_ -# define PNG_ABORT() ExitProcess(0) -# else -# define PNG_ABORT() abort() -# endif -#endif - -/* These macros may need to be architecture dependent. */ -#define PNG_ALIGN_NONE 0 /* do not use data alignment */ -#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */ -#ifdef offsetof -# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */ -#else -# define PNG_ALIGN_OFFSET -1 /* prevent the use of this */ -#endif -#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */ - -#ifndef PNG_ALIGN_TYPE - /* Default to using aligned access optimizations and requiring alignment to a - * multiple of the data type size. Override in a compiler specific fashion - * if necessary by inserting tests here: - */ -# define PNG_ALIGN_TYPE PNG_ALIGN_SIZE -#endif - -#if PNG_ALIGN_TYPE == PNG_ALIGN_SIZE - /* This is used because in some compiler implementations non-aligned - * structure members are supported, so the offsetof approach below fails. - * Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access - * is good for performance. Do not do this unless you have tested the result - * and understand it. - */ -# define png_alignof(type) (sizeof (type)) -#else -# if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET -# define png_alignof(type) offsetof(struct{char c; type t;}, t) -# else -# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS -# define png_alignof(type) (1) -# endif - /* Else leave png_alignof undefined to prevent use thereof */ -# endif -#endif - -/* This implicitly assumes alignment is always to a power of 2. */ -#ifdef png_alignof -# define png_isaligned(ptr, type)\ - (((type)((const char*)ptr-(const char*)0) & \ - (type)(png_alignof(type)-1)) == 0) -#else -# define png_isaligned(ptr, type) 0 -#endif - -/* End of memory model/platform independent support */ -/* End of 1.5.0beta36 move from pngconf.h */ - -/* CONSTANTS and UTILITY MACROS - * These are used internally by libpng and not exposed in the API - */ - -/* Various modes of operation. Note that after an init, mode is set to - * zero automatically when the structure is created. Three of these - * are defined in png.h because they need to be visible to applications - * that call png_set_unknown_chunk(). - */ -/* #define PNG_HAVE_IHDR 0x01U (defined in png.h) */ -/* #define PNG_HAVE_PLTE 0x02U (defined in png.h) */ -#define PNG_HAVE_IDAT 0x04U -/* #define PNG_AFTER_IDAT 0x08U (defined in png.h) */ -#define PNG_HAVE_IEND 0x10U - /* 0x20U (unused) */ - /* 0x40U (unused) */ - /* 0x80U (unused) */ -#define PNG_HAVE_CHUNK_HEADER 0x100U -#define PNG_WROTE_tIME 0x200U -#define PNG_WROTE_INFO_BEFORE_PLTE 0x400U -#define PNG_BACKGROUND_IS_GRAY 0x800U -#define PNG_HAVE_PNG_SIGNATURE 0x1000U -#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000U /* Have another chunk after IDAT */ - /* 0x4000U (unused) */ -#define PNG_IS_READ_STRUCT 0x8000U /* Else is a write struct */ - -/* Flags for the transformations the PNG library does on the image data */ -#define PNG_BGR 0x0001U -#define PNG_INTERLACE 0x0002U -#define PNG_PACK 0x0004U -#define PNG_SHIFT 0x0008U -#define PNG_SWAP_BYTES 0x0010U -#define PNG_INVERT_MONO 0x0020U -#define PNG_QUANTIZE 0x0040U -#define PNG_COMPOSE 0x0080U /* Was PNG_BACKGROUND */ -#define PNG_BACKGROUND_EXPAND 0x0100U -#define PNG_EXPAND_16 0x0200U /* Added to libpng 1.5.2 */ -#define PNG_16_TO_8 0x0400U /* Becomes 'chop' in 1.5.4 */ -#define PNG_RGBA 0x0800U -#define PNG_EXPAND 0x1000U -#define PNG_GAMMA 0x2000U -#define PNG_GRAY_TO_RGB 0x4000U -#define PNG_FILLER 0x8000U -#define PNG_PACKSWAP 0x10000U -#define PNG_SWAP_ALPHA 0x20000U -#define PNG_STRIP_ALPHA 0x40000U -#define PNG_INVERT_ALPHA 0x80000U -#define PNG_USER_TRANSFORM 0x100000U -#define PNG_RGB_TO_GRAY_ERR 0x200000U -#define PNG_RGB_TO_GRAY_WARN 0x400000U -#define PNG_RGB_TO_GRAY 0x600000U /* two bits, RGB_TO_GRAY_ERR|WARN */ -#define PNG_ENCODE_ALPHA 0x800000U /* Added to libpng-1.5.4 */ -#define PNG_ADD_ALPHA 0x1000000U /* Added to libpng-1.2.7 */ -#define PNG_EXPAND_tRNS 0x2000000U /* Added to libpng-1.2.9 */ -#define PNG_SCALE_16_TO_8 0x4000000U /* Added to libpng-1.5.4 */ - /* 0x8000000U unused */ - /* 0x10000000U unused */ - /* 0x20000000U unused */ - /* 0x40000000U unused */ -/* Flags for png_create_struct */ -#define PNG_STRUCT_PNG 0x0001U -#define PNG_STRUCT_INFO 0x0002U - -/* Flags for the png_ptr->flags rather than declaring a byte for each one */ -#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001U -#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002U /* Added to libpng-1.6.0 */ - /* 0x0004U unused */ -#define PNG_FLAG_ZSTREAM_ENDED 0x0008U /* Added to libpng-1.6.0 */ - /* 0x0010U unused */ - /* 0x0020U unused */ -#define PNG_FLAG_ROW_INIT 0x0040U -#define PNG_FLAG_FILLER_AFTER 0x0080U -#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100U -#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200U -#define PNG_FLAG_CRC_CRITICAL_USE 0x0400U -#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800U -#define PNG_FLAG_ASSUME_sRGB 0x1000U /* Added to libpng-1.5.4 */ -#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000U /* Added to libpng-1.5.4 */ -#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000U /* Added to libpng-1.5.4 */ -/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000U */ -/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000U */ -#define PNG_FLAG_LIBRARY_MISMATCH 0x20000U -#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000U -#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000U -#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000U /* Added to libpng-1.4.0 */ -#define PNG_FLAG_APP_WARNINGS_WARN 0x200000U /* Added to libpng-1.6.0 */ -#define PNG_FLAG_APP_ERRORS_WARN 0x400000U /* Added to libpng-1.6.0 */ - /* 0x800000U unused */ - /* 0x1000000U unused */ - /* 0x2000000U unused */ - /* 0x4000000U unused */ - /* 0x8000000U unused */ - /* 0x10000000U unused */ - /* 0x20000000U unused */ - /* 0x40000000U unused */ - -#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \ - PNG_FLAG_CRC_ANCILLARY_NOWARN) - -#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \ - PNG_FLAG_CRC_CRITICAL_IGNORE) - -#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \ - PNG_FLAG_CRC_CRITICAL_MASK) - -/* Save typing and make code easier to understand */ - -#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ - abs((int)((c1).green) - (int)((c2).green)) + \ - abs((int)((c1).blue) - (int)((c2).blue))) - -/* Added to libpng-1.6.0: scale a 16-bit value in the range 0..65535 to 0..255 - * by dividing by 257 *with rounding*. This macro is exact for the given range. - * See the discourse in pngrtran.c png_do_scale_16_to_8. The values in the - * macro were established by experiment (modifying the added value). The macro - * has a second variant that takes a value already scaled by 255 and divides by - * 65535 - this has a maximum error of .502. Over the range 0..65535*65535 it - * only gives off-by-one errors and only for 0.5% (1 in 200) of the values. - */ -#define PNG_DIV65535(v24) (((v24) + 32895) >> 16) -#define PNG_DIV257(v16) PNG_DIV65535((png_uint_32)(v16) * 255) - -/* Added to libpng-1.2.6 JB */ -#define PNG_ROWBYTES(pixel_bits, width) \ - ((pixel_bits) >= 8 ? \ - ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \ - (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) ) - -/* This returns the number of trailing bits in the last byte of a row, 0 if the - * last byte is completely full of pixels. It is, in principle, (pixel_bits x - * width) % 8, but that would overflow for large 'width'. The second macro is - * the same except that it returns the number of unused bits in the last byte; - * (8-TRAILBITS), but 0 when TRAILBITS is 0. - * - * NOTE: these macros are intended to be self-evidently correct and never - * overflow on the assumption that pixel_bits is in the range 0..255. The - * arguments are evaluated only once and they can be signed (e.g. as a result of - * the integral promotions). The result of the expression always has type - * (png_uint_32), however the compiler always knows it is in the range 0..7. - */ -#define PNG_TRAILBITS(pixel_bits, width) \ - (((pixel_bits) * ((width) % (png_uint_32)8)) % 8) - -#define PNG_PADBITS(pixel_bits, width) \ - ((8 - PNG_TRAILBITS(pixel_bits, width)) % 8) - -/* PNG_OUT_OF_RANGE returns true if value is outside the range - * ideal-delta..ideal+delta. Each argument is evaluated twice. - * "ideal" and "delta" should be constants, normally simple - * integers, "value" a variable. Added to libpng-1.2.6 JB - */ -#define PNG_OUT_OF_RANGE(value, ideal, delta) \ - ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) ) - -/* Conversions between fixed and floating point, only defined if - * required (to make sure the code doesn't accidentally use float - * when it is supposedly disabled.) - */ -#ifdef PNG_FLOATING_POINT_SUPPORTED -/* The floating point conversion can't overflow, though it can and - * does lose accuracy relative to the original fixed point value. - * In practice this doesn't matter because png_fixed_point only - * stores numbers with very low precision. The png_ptr and s - * arguments are unused by default but are there in case error - * checking becomes a requirement. - */ -#define png_float(png_ptr, fixed, s) (.00001 * (fixed)) - -/* The fixed point conversion performs range checking and evaluates - * its argument multiple times, so must be used with care. The - * range checking uses the PNG specification values for a signed - * 32-bit fixed point value except that the values are deliberately - * rounded-to-zero to an integral value - 21474 (21474.83 is roughly - * (2^31-1) * 100000). 's' is a string that describes the value being - * converted. - * - * NOTE: this macro will raise a png_error if the range check fails, - * therefore it is normally only appropriate to use this on values - * that come from API calls or other sources where an out of range - * error indicates a programming error, not a data error! - * - * NOTE: by default this is off - the macro is not used - because the - * function call saves a lot of code. - */ -#ifdef PNG_FIXED_POINT_MACRO_SUPPORTED -#define png_fixed(png_ptr, fp, s) ((fp) <= 21474 && (fp) >= -21474 ?\ - ((png_fixed_point)(100000 * (fp))) : (png_fixed_error(png_ptr, s),0)) -#endif -/* else the corresponding function is defined below, inside the scope of the - * cplusplus test. - */ -#endif - -/* Constants for known chunk types. If you need to add a chunk, define the name - * here. For historical reasons these constants have the form png_; i.e. - * the prefix is lower case. Please use decimal values as the parameters to - * match the ISO PNG specification and to avoid relying on the C locale - * interpretation of character values. - * - * Prior to 1.5.6 these constants were strings, as of 1.5.6 png_uint_32 values - * are computed and a new macro (PNG_STRING_FROM_CHUNK) added to allow a string - * to be generated if required. - * - * PNG_32b correctly produces a value shifted by up to 24 bits, even on - * architectures where (int) is only 16 bits. - */ -#define PNG_32b(b,s) ((png_uint_32)(b) << (s)) -#define PNG_U32(b1,b2,b3,b4) \ - (PNG_32b(b1,24) | PNG_32b(b2,16) | PNG_32b(b3,8) | PNG_32b(b4,0)) - -/* Constants for known chunk types. - * - * MAINTAINERS: If you need to add a chunk, define the name here. - * For historical reasons these constants have the form png_; i.e. - * the prefix is lower case. Please use decimal values as the parameters to - * match the ISO PNG specification and to avoid relying on the C locale - * interpretation of character values. Please keep the list sorted. - * - * Notice that PNG_U32 is used to define a 32-bit value for the 4 byte chunk - * type. In fact the specification does not express chunk types this way, - * however using a 32-bit value means that the chunk type can be read from the - * stream using exactly the same code as used for a 32-bit unsigned value and - * can be examined far more efficiently (using one arithmetic compare). - * - * Prior to 1.5.6 the chunk type constants were expressed as C strings. The - * libpng API still uses strings for 'unknown' chunks and a macro, - * PNG_STRING_FROM_CHUNK, allows a string to be generated if required. Notice - * that for portable code numeric values must still be used; the string "IHDR" - * is not portable and neither is PNG_U32('I', 'H', 'D', 'R'). - * - * In 1.7.0 the definitions will be made public in png.h to avoid having to - * duplicate the same definitions in application code. - */ -#define png_IDAT PNG_U32( 73, 68, 65, 84) -#define png_IEND PNG_U32( 73, 69, 78, 68) -#define png_IHDR PNG_U32( 73, 72, 68, 82) -#define png_PLTE PNG_U32( 80, 76, 84, 69) -#define png_bKGD PNG_U32( 98, 75, 71, 68) -#define png_cHRM PNG_U32( 99, 72, 82, 77) -#define png_eXIf PNG_U32(101, 88, 73, 102) /* registered July 2017 */ -#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */ -#define png_gAMA PNG_U32(103, 65, 77, 65) -#define png_gIFg PNG_U32(103, 73, 70, 103) -#define png_gIFt PNG_U32(103, 73, 70, 116) /* deprecated */ -#define png_gIFx PNG_U32(103, 73, 70, 120) -#define png_hIST PNG_U32(104, 73, 83, 84) -#define png_iCCP PNG_U32(105, 67, 67, 80) -#define png_iTXt PNG_U32(105, 84, 88, 116) -#define png_oFFs PNG_U32(111, 70, 70, 115) -#define png_pCAL PNG_U32(112, 67, 65, 76) -#define png_pHYs PNG_U32(112, 72, 89, 115) -#define png_sBIT PNG_U32(115, 66, 73, 84) -#define png_sCAL PNG_U32(115, 67, 65, 76) -#define png_sPLT PNG_U32(115, 80, 76, 84) -#define png_sRGB PNG_U32(115, 82, 71, 66) -#define png_sTER PNG_U32(115, 84, 69, 82) -#define png_tEXt PNG_U32(116, 69, 88, 116) -#define png_tIME PNG_U32(116, 73, 77, 69) -#define png_tRNS PNG_U32(116, 82, 78, 83) -#define png_zTXt PNG_U32(122, 84, 88, 116) - -/* The following will work on (signed char*) strings, whereas the get_uint_32 - * macro will fail on top-bit-set values because of the sign extension. - */ -#define PNG_CHUNK_FROM_STRING(s)\ - PNG_U32(0xff & (s)[0], 0xff & (s)[1], 0xff & (s)[2], 0xff & (s)[3]) - -/* This uses (char), not (png_byte) to avoid warnings on systems where (char) is - * signed and the argument is a (char[]) This macro will fail miserably on - * systems where (char) is more than 8 bits. - */ -#define PNG_STRING_FROM_CHUNK(s,c)\ - (void)(((char*)(s))[0]=(char)(((c)>>24) & 0xff), \ - ((char*)(s))[1]=(char)(((c)>>16) & 0xff),\ - ((char*)(s))[2]=(char)(((c)>>8) & 0xff), \ - ((char*)(s))[3]=(char)((c & 0xff))) - -/* Do the same but terminate with a null character. */ -#define PNG_CSTRING_FROM_CHUNK(s,c)\ - (void)(PNG_STRING_FROM_CHUNK(s,c), ((char*)(s))[4] = 0) - -/* Test on flag values as defined in the spec (section 5.4): */ -#define PNG_CHUNK_ANCILLARY(c) (1 & ((c) >> 29)) -#define PNG_CHUNK_CRITICAL(c) (!PNG_CHUNK_ANCILLARY(c)) -#define PNG_CHUNK_PRIVATE(c) (1 & ((c) >> 21)) -#define PNG_CHUNK_RESERVED(c) (1 & ((c) >> 13)) -#define PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >> 5)) - -/* Gamma values (new at libpng-1.5.4): */ -#define PNG_GAMMA_MAC_OLD 151724 /* Assume '1.8' is really 2.2/1.45! */ -#define PNG_GAMMA_MAC_INVERSE 65909 -#define PNG_GAMMA_sRGB_INVERSE 45455 - -/* Almost everything below is C specific; the #defines above can be used in - * non-C code (so long as it is C-preprocessed) the rest of this stuff cannot. - */ -#ifndef PNG_VERSION_INFO_ONLY - -#include "pngstruct.h" -#include "pnginfo.h" - -/* Validate the include paths - the include path used to generate pnglibconf.h - * must match that used in the build, or we must be using pnglibconf.h.prebuilt: - */ -#if PNG_ZLIB_VERNUM != 0 && PNG_ZLIB_VERNUM != ZLIB_VERNUM -# error ZLIB_VERNUM != PNG_ZLIB_VERNUM \ - "-I (include path) error: see the notes in pngpriv.h" - /* This means that when pnglibconf.h was built the copy of zlib.h that it - * used is not the same as the one being used here. Because the build of - * libpng makes decisions to use inflateInit2 and inflateReset2 based on the - * zlib version number and because this affects handling of certain broken - * PNG files the -I directives must match. - * - * The most likely explanation is that you passed a -I in CFLAGS. This will - * not work; all the preprocessor directories and in particular all the -I - * directives must be in CPPFLAGS. - */ -#endif - -/* This is used for 16-bit gamma tables -- only the top level pointers are - * const; this could be changed: - */ -typedef const png_uint_16p * png_const_uint_16pp; - -/* Added to libpng-1.5.7: sRGB conversion tables */ -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) -#ifdef PNG_SIMPLIFIED_READ_SUPPORTED -PNG_INTERNAL_DATA(const png_uint_16, png_sRGB_table, [256]); - /* Convert from an sRGB encoded value 0..255 to a 16-bit linear value, - * 0..65535. This table gives the closest 16-bit answers (no errors). - */ -#endif - -PNG_INTERNAL_DATA(const png_uint_16, png_sRGB_base, [512]); -PNG_INTERNAL_DATA(const png_byte, png_sRGB_delta, [512]); - -#define PNG_sRGB_FROM_LINEAR(linear) \ - ((png_byte)(0xff & ((png_sRGB_base[(linear)>>15] \ - + ((((linear) & 0x7fff)*png_sRGB_delta[(linear)>>15])>>12)) >> 8))) - /* Given a value 'linear' in the range 0..255*65535 calculate the 8-bit sRGB - * encoded value with maximum error 0.646365. Note that the input is not a - * 16-bit value; it has been multiplied by 255! */ -#endif /* SIMPLIFIED_READ/WRITE */ - - -/* Inhibit C++ name-mangling for libpng functions but not for system calls. */ -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -/* Internal functions; these are not exported from a DLL however because they - * are used within several of the C source files they have to be C extern. - * - * All of these functions must be declared with PNG_INTERNAL_FUNCTION. - */ - -/* Zlib support */ -#define PNG_UNEXPECTED_ZLIB_RETURN (-7) -PNG_INTERNAL_FUNCTION(void, png_zstream_error,(png_structrp png_ptr, int ret), - PNG_EMPTY); - /* Used by the zlib handling functions to ensure that z_stream::msg is always - * set before they return. - */ - -#ifdef PNG_WRITE_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_free_buffer_list,(png_structrp png_ptr, - png_compression_bufferp *list),PNG_EMPTY); - /* Free the buffer list used by the compressed write code. */ -#endif - -#if defined(PNG_FLOATING_POINT_SUPPORTED) && \ - !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \ - (defined(PNG_gAMA_SUPPORTED) || defined(PNG_cHRM_SUPPORTED) || \ - defined(PNG_sCAL_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \ - (defined(PNG_sCAL_SUPPORTED) && \ - defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)) -PNG_INTERNAL_FUNCTION(png_fixed_point,png_fixed,(png_const_structrp png_ptr, - double fp, png_const_charp text),PNG_EMPTY); -#endif - -/* Check the user version string for compatibility, returns false if the version - * numbers aren't compatible. - */ -PNG_INTERNAL_FUNCTION(int,png_user_version_check,(png_structrp png_ptr, - png_const_charp user_png_ver),PNG_EMPTY); - -/* Internal base allocator - no messages, NULL on failure to allocate. This - * does, however, call the application provided allocator and that could call - * png_error (although that would be a bug in the application implementation.) - */ -PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_base,(png_const_structrp png_ptr, - png_alloc_size_t size),PNG_ALLOCATED); - -#if defined(PNG_TEXT_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) ||\ - defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) -/* Internal array allocator, outputs no error or warning messages on failure, - * just returns NULL. - */ -PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_array,(png_const_structrp png_ptr, - int nelements, size_t element_size),PNG_ALLOCATED); - -/* The same but an existing array is extended by add_elements. This function - * also memsets the new elements to 0 and copies the old elements. The old - * array is not freed or altered. - */ -PNG_INTERNAL_FUNCTION(png_voidp,png_realloc_array,(png_const_structrp png_ptr, - png_const_voidp array, int old_elements, int add_elements, - size_t element_size),PNG_ALLOCATED); -#endif /* text, sPLT or unknown chunks */ - -/* Magic to create a struct when there is no struct to call the user supplied - * memory allocators. Because error handling has not been set up the memory - * handlers can't safely call png_error, but this is an obscure and undocumented - * restriction so libpng has to assume that the 'free' handler, at least, might - * call png_error. - */ -PNG_INTERNAL_FUNCTION(png_structp,png_create_png_struct, - (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, - png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, - png_free_ptr free_fn),PNG_ALLOCATED); - -/* Free memory from internal libpng struct */ -PNG_INTERNAL_FUNCTION(void,png_destroy_png_struct,(png_structrp png_ptr), - PNG_EMPTY); - -/* Free an allocated jmp_buf (always succeeds) */ -PNG_INTERNAL_FUNCTION(void,png_free_jmpbuf,(png_structrp png_ptr),PNG_EMPTY); - -/* Function to allocate memory for zlib. PNGAPI is disallowed. */ -PNG_INTERNAL_FUNCTION(voidpf,png_zalloc,(voidpf png_ptr, uInt items, uInt size), - PNG_ALLOCATED); - -/* Function to free memory for zlib. PNGAPI is disallowed. */ -PNG_INTERNAL_FUNCTION(void,png_zfree,(voidpf png_ptr, voidpf ptr),PNG_EMPTY); - -/* Next four functions are used internally as callbacks. PNGCBAPI is required - * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to - * PNGCBAPI at 1.5.0 - */ - -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_read_data,(png_structp png_ptr, - png_bytep data, png_size_t length),PNG_EMPTY); - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_push_fill_buffer,(png_structp png_ptr, - png_bytep buffer, png_size_t length),PNG_EMPTY); -#endif - -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_write_data,(png_structp png_ptr, - png_bytep data, png_size_t length),PNG_EMPTY); - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -# ifdef PNG_STDIO_SUPPORTED -PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_flush,(png_structp png_ptr), - PNG_EMPTY); -# endif -#endif - -/* Reset the CRC variable */ -PNG_INTERNAL_FUNCTION(void,png_reset_crc,(png_structrp png_ptr),PNG_EMPTY); - -/* Write the "data" buffer to whatever output you are using */ -PNG_INTERNAL_FUNCTION(void,png_write_data,(png_structrp png_ptr, - png_const_bytep data, png_size_t length),PNG_EMPTY); - -/* Read and check the PNG file signature */ -PNG_INTERNAL_FUNCTION(void,png_read_sig,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); - -/* Read the chunk header (length + type name) */ -PNG_INTERNAL_FUNCTION(png_uint_32,png_read_chunk_header,(png_structrp png_ptr), - PNG_EMPTY); - -/* Read data from whatever input you are using into the "data" buffer */ -PNG_INTERNAL_FUNCTION(void,png_read_data,(png_structrp png_ptr, png_bytep data, - png_size_t length),PNG_EMPTY); - -/* Read bytes into buf, and update png_ptr->crc */ -PNG_INTERNAL_FUNCTION(void,png_crc_read,(png_structrp png_ptr, png_bytep buf, - png_uint_32 length),PNG_EMPTY); - -/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ -PNG_INTERNAL_FUNCTION(int,png_crc_finish,(png_structrp png_ptr, - png_uint_32 skip),PNG_EMPTY); - -/* Read the CRC from the file and compare it to the libpng calculated CRC */ -PNG_INTERNAL_FUNCTION(int,png_crc_error,(png_structrp png_ptr),PNG_EMPTY); - -/* Calculate the CRC over a section of data. Note that we are only - * passing a maximum of 64K on systems that have this as a memory limit, - * since this is the maximum buffer size we can specify. - */ -PNG_INTERNAL_FUNCTION(void,png_calculate_crc,(png_structrp png_ptr, - png_const_bytep ptr, png_size_t length),PNG_EMPTY); - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_flush,(png_structrp png_ptr),PNG_EMPTY); -#endif - -/* Write various chunks */ - -/* Write the IHDR chunk, and update the png_struct with the necessary - * information. - */ -PNG_INTERNAL_FUNCTION(void,png_write_IHDR,(png_structrp png_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, - int compression_method, int filter_method, int interlace_method),PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(void,png_write_PLTE,(png_structrp png_ptr, - png_const_colorp palette, png_uint_32 num_pal),PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(void,png_compress_IDAT,(png_structrp png_ptr, - png_const_bytep row_data, png_alloc_size_t row_data_length, int flush), - PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(void,png_write_IEND,(png_structrp png_ptr),PNG_EMPTY); - -#ifdef PNG_WRITE_gAMA_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_gAMA_fixed,(png_structrp png_ptr, - png_fixed_point file_gamma),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_sBIT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sBIT,(png_structrp png_ptr, - png_const_color_8p sbit, int color_type),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_cHRM_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_cHRM_fixed,(png_structrp png_ptr, - const png_xy *xy), PNG_EMPTY); - /* The xy value must have been previously validated */ -#endif - -#ifdef PNG_WRITE_sRGB_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sRGB,(png_structrp png_ptr, - int intent),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_eXIf_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_eXIf,(png_structrp png_ptr, - png_bytep exif, int num_exif),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_iCCP_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr, - png_const_charp name, png_const_bytep profile), PNG_EMPTY); - /* The profile must have been previously validated for correctness, the - * length comes from the first four bytes. Only the base, deflate, - * compression is supported. - */ -#endif - -#ifdef PNG_WRITE_sPLT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sPLT,(png_structrp png_ptr, - png_const_sPLT_tp palette),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_tRNS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_tRNS,(png_structrp png_ptr, - png_const_bytep trans, png_const_color_16p values, int number, - int color_type),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_bKGD_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_bKGD,(png_structrp png_ptr, - png_const_color_16p values, int color_type),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_hIST_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_hIST,(png_structrp png_ptr, - png_const_uint_16p hist, int num_hist),PNG_EMPTY); -#endif - -/* Chunks that have keywords */ -#ifdef PNG_WRITE_tEXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_tEXt,(png_structrp png_ptr, - png_const_charp key, png_const_charp text, png_size_t text_len),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_zTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_zTXt,(png_structrp png_ptr, png_const_charp - key, png_const_charp text, int compression),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_iTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_iTXt,(png_structrp png_ptr, - int compression, png_const_charp key, png_const_charp lang, - png_const_charp lang_key, png_const_charp text),PNG_EMPTY); -#endif - -#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */ -PNG_INTERNAL_FUNCTION(int,png_set_text_2,(png_const_structrp png_ptr, - png_inforp info_ptr, png_const_textp text_ptr, int num_text),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_oFFs_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_oFFs,(png_structrp png_ptr, - png_int_32 x_offset, png_int_32 y_offset, int unit_type),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_pCAL_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_pCAL,(png_structrp png_ptr, - png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, - png_const_charp units, png_charpp params),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_pHYs_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_pHYs,(png_structrp png_ptr, - png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, - int unit_type),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_tIME_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_tIME,(png_structrp png_ptr, - png_const_timep mod_time),PNG_EMPTY); -#endif - -#ifdef PNG_WRITE_sCAL_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_write_sCAL_s,(png_structrp png_ptr, - int unit, png_const_charp width, png_const_charp height),PNG_EMPTY); -#endif - -/* Called when finished processing a row of data */ -PNG_INTERNAL_FUNCTION(void,png_write_finish_row,(png_structrp png_ptr), - PNG_EMPTY); - -/* Internal use only. Called before first row of data */ -PNG_INTERNAL_FUNCTION(void,png_write_start_row,(png_structrp png_ptr), - PNG_EMPTY); - -/* Combine a row of data, dealing with alpha, etc. if requested. 'row' is an - * array of png_ptr->width pixels. If the image is not interlaced or this - * is the final pass this just does a memcpy, otherwise the "display" flag - * is used to determine whether to copy pixels that are not in the current pass. - * - * Because 'png_do_read_interlace' (below) replicates pixels this allows this - * function to achieve the documented 'blocky' appearance during interlaced read - * if display is 1 and the 'sparkle' appearance, where existing pixels in 'row' - * are not changed if they are not in the current pass, when display is 0. - * - * 'display' must be 0 or 1, otherwise the memcpy will be done regardless. - * - * The API always reads from the png_struct row buffer and always assumes that - * it is full width (png_do_read_interlace has already been called.) - * - * This function is only ever used to write to row buffers provided by the - * caller of the relevant libpng API and the row must have already been - * transformed by the read transformations. - * - * The PNG_USE_COMPILE_TIME_MASKS option causes generation of pre-computed - * bitmasks for use within the code, otherwise runtime generated masks are used. - * The default is compile time masks. - */ -#ifndef PNG_USE_COMPILE_TIME_MASKS -# define PNG_USE_COMPILE_TIME_MASKS 1 -#endif -PNG_INTERNAL_FUNCTION(void,png_combine_row,(png_const_structrp png_ptr, - png_bytep row, int display),PNG_EMPTY); - -#ifdef PNG_READ_INTERLACING_SUPPORTED -/* Expand an interlaced row: the 'row_info' describes the pass data that has - * been read in and must correspond to the pixels in 'row', the pixels are - * expanded (moved apart) in 'row' to match the final layout, when doing this - * the pixels are *replicated* to the intervening space. This is essential for - * the correct operation of png_combine_row, above. - */ -PNG_INTERNAL_FUNCTION(void,png_do_read_interlace,(png_row_infop row_info, - png_bytep row, int pass, png_uint_32 transformations),PNG_EMPTY); -#endif - -/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED -/* Grab pixels out of a row for an interlaced pass */ -PNG_INTERNAL_FUNCTION(void,png_do_write_interlace,(png_row_infop row_info, - png_bytep row, int pass),PNG_EMPTY); -#endif - -/* Unfilter a row: check the filter value before calling this, there is no point - * calling it for PNG_FILTER_VALUE_NONE. - */ -PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop - row_info, png_bytep row, png_const_bytep prev_row, int filter),PNG_EMPTY); - -#if PNG_ARM_NEON_OPT > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_neon,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -#endif - -#if PNG_MIPS_MSA_OPT > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_msa,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_msa,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -#endif - -#if PNG_POWERPC_VSX_OPT > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_vsx,(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_vsx,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -#endif - -#if PNG_INTEL_SSE_IMPLEMENTATION > 0 -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_sse2,(png_row_infop - row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY); -#endif - -/* Choose the best filter to use and filter the row data */ -PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr, - png_row_infop row_info),PNG_EMPTY); - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_read_IDAT_data,(png_structrp png_ptr, - png_bytep output, png_alloc_size_t avail_out),PNG_EMPTY); - /* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer - * is NULL the function checks, instead, for the end of the stream. In this - * case a benign error will be issued if the stream end is not found or if - * extra data has to be consumed. - */ -PNG_INTERNAL_FUNCTION(void,png_read_finish_IDAT,(png_structrp png_ptr), - PNG_EMPTY); - /* This cleans up when the IDAT LZ stream does not end when the last image - * byte is read; there is still some pending input. - */ - -PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr), - PNG_EMPTY); - /* Finish a row while reading, dealing with interlacing passes, etc. */ -#endif /* SEQUENTIAL_READ */ - -/* Initialize the row buffers, etc. */ -PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY); - -#if ZLIB_VERNUM >= 0x1240 -PNG_INTERNAL_FUNCTION(int,png_zlib_inflate,(png_structrp png_ptr, int flush), - PNG_EMPTY); -# define PNG_INFLATE(pp, flush) png_zlib_inflate(pp, flush) -#else /* Zlib < 1.2.4 */ -# define PNG_INFLATE(pp, flush) inflate(&(pp)->zstream, flush) -#endif /* Zlib < 1.2.4 */ - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED -/* Optional call to update the users info structure */ -PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -#endif - -/* Shared transform functions, defined in pngtran.c */ -#if defined(PNG_WRITE_FILLER_SUPPORTED) || \ - defined(PNG_READ_STRIP_ALPHA_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_strip_channel,(png_row_infop row_info, - png_bytep row, int at_start),PNG_EMPTY); -#endif - -#ifdef PNG_16BIT_SUPPORTED -#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_swap,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); -#endif -#endif - -#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \ - defined(PNG_WRITE_PACKSWAP_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_packswap,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); -#endif - -#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_invert,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); -#endif - -#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_bgr,(png_row_infop row_info, - png_bytep row),PNG_EMPTY); -#endif - -/* The following decodes the appropriate chunks, and does error correction, - * then calls the appropriate callback for the chunk if it is valid. - */ - -/* Decode the IHDR chunk */ -PNG_INTERNAL_FUNCTION(void,png_handle_IHDR,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_handle_PLTE,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_handle_IEND,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); - -#ifdef PNG_READ_bKGD_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_bKGD,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_cHRM_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_cHRM,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_eXIf_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_eXIf,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_gAMA_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_gAMA,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_hIST_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_hIST,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_iCCP_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_iCCP,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif /* READ_iCCP */ - -#ifdef PNG_READ_iTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_iTXt,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_oFFs_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_oFFs,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_pCAL,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_pHYs_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_pHYs,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_sBIT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_sBIT,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_sCAL_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_sCAL,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_sPLT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_sPLT,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif /* READ_sPLT */ - -#ifdef PNG_READ_sRGB_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_sRGB,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_tEXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_tEXt,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_tIME_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_tIME,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_tRNS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_tRNS,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -#ifdef PNG_READ_zTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_handle_zTXt,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -#endif - -PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_const_structrp png_ptr, - const png_uint_32 chunk_name),PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(void,png_check_chunk_length,(png_const_structrp png_ptr, - const png_uint_32 chunk_length),PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length, int keep),PNG_EMPTY); - /* This is the function that gets called for unknown chunks. The 'keep' - * argument is either non-zero for a known chunk that has been set to be - * handled as unknown or zero for an unknown chunk. By default the function - * just skips the chunk or errors out if it is critical. - */ - -#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) ||\ - defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) -PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling, - (png_const_structrp png_ptr, png_uint_32 chunk_name),PNG_EMPTY); - /* Exactly as the API png_handle_as_unknown() except that the argument is a - * 32-bit chunk name, not a string. - */ -#endif /* READ_UNKNOWN_CHUNKS || HANDLE_AS_UNKNOWN */ - -/* Handle the transformations for reading and writing */ -#ifdef PNG_READ_TRANSFORMS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_do_read_transformations,(png_structrp png_ptr, - png_row_infop row_info),PNG_EMPTY); -#endif -#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_do_write_transformations,(png_structrp png_ptr, - png_row_infop row_info),PNG_EMPTY); -#endif - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_init_read_transformations,(png_structrp png_ptr), - PNG_EMPTY); -#endif - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_push_read_chunk,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_sig,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_check_crc,(png_structrp png_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_save_buffer,(png_structrp png_ptr), - PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_restore_buffer,(png_structrp png_ptr, - png_bytep buffer, png_size_t buffer_length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_IDAT,(png_structrp png_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_process_IDAT_data,(png_structrp png_ptr, - png_bytep buffer, png_size_t buffer_length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_process_row,(png_structrp png_ptr), - PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_handle_unknown,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_have_end,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_have_row,(png_structrp png_ptr, - png_bytep row),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_end,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_process_some_data,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_read_push_finish_row,(png_structrp png_ptr), - PNG_EMPTY); -# ifdef PNG_READ_tEXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_push_handle_tEXt,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_tEXt,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -# endif -# ifdef PNG_READ_zTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_push_handle_zTXt,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_zTXt,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -# endif -# ifdef PNG_READ_iTXt_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_push_handle_iTXt,(png_structrp png_ptr, - png_inforp info_ptr, png_uint_32 length),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_push_read_iTXt,(png_structrp png_ptr, - png_inforp info_ptr),PNG_EMPTY); -# endif - -#endif /* PROGRESSIVE_READ */ - -/* Added at libpng version 1.6.0 */ -#ifdef PNG_GAMMA_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_fixed_point gAMA), PNG_EMPTY); - /* Set the colorspace gamma with a value provided by the application or by - * the gAMA chunk on read. The value will override anything set by an ICC - * profile. - */ - -PNG_INTERNAL_FUNCTION(void,png_colorspace_sync_info,(png_const_structrp png_ptr, - png_inforp info_ptr), PNG_EMPTY); - /* Synchronize the info 'valid' flags with the colorspace */ - -PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr, - png_inforp info_ptr), PNG_EMPTY); - /* Copy the png_struct colorspace to the info_struct and call the above to - * synchronize the flags. Checks for NULL info_ptr and does nothing. - */ -#endif - -/* Added at libpng version 1.4.0 */ -#ifdef PNG_COLORSPACE_SUPPORTED -/* These internal functions are for maintaining the colorspace structure within - * a png_info or png_struct (or, indeed, both). - */ -PNG_INTERNAL_FUNCTION(int,png_colorspace_set_chromaticities, - (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_xy *xy, - int preferred), PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(int,png_colorspace_set_endpoints, - (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_XYZ *XYZ, - int preferred), PNG_EMPTY); - -#ifdef PNG_sRGB_SUPPORTED -PNG_INTERNAL_FUNCTION(int,png_colorspace_set_sRGB,(png_const_structrp png_ptr, - png_colorspacerp colorspace, int intent), PNG_EMPTY); - /* This does set the colorspace gAMA and cHRM values too, but doesn't set the - * flags to write them, if it returns false there was a problem and an error - * message has already been output (but the colorspace may still need to be - * synced to record the invalid flag). - */ -#endif /* sRGB */ - -#ifdef PNG_iCCP_SUPPORTED -PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_const_charp name, - png_uint_32 profile_length, png_const_bytep profile, int color_type), - PNG_EMPTY); - /* The 'name' is used for information only */ - -/* Routines for checking parts of an ICC profile. */ -#ifdef PNG_READ_iCCP_SUPPORTED -PNG_INTERNAL_FUNCTION(int,png_icc_check_length,(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_const_charp name, - png_uint_32 profile_length), PNG_EMPTY); -#endif /* READ_iCCP */ -PNG_INTERNAL_FUNCTION(int,png_icc_check_header,(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_const_charp name, - png_uint_32 profile_length, - png_const_bytep profile /* first 132 bytes only */, int color_type), - PNG_EMPTY); -PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr, - png_colorspacerp colorspace, png_const_charp name, - png_uint_32 profile_length, - png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY); -#ifdef PNG_sRGB_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_icc_set_sRGB,( - png_const_structrp png_ptr, png_colorspacerp colorspace, - png_const_bytep profile, uLong adler), PNG_EMPTY); - /* 'adler' is the Adler32 checksum of the uncompressed profile data. It may - * be zero to indicate that it is not available. It is used, if provided, - * as a fast check on the profile when checking to see if it is sRGB. - */ -#endif -#endif /* iCCP */ - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_colorspace_set_rgb_coefficients, - (png_structrp png_ptr), PNG_EMPTY); - /* Set the rgb_to_gray coefficients from the colorspace Y values */ -#endif /* READ_RGB_TO_GRAY */ -#endif /* COLORSPACE */ - -/* Added at libpng version 1.4.0 */ -PNG_INTERNAL_FUNCTION(void,png_check_IHDR,(png_const_structrp png_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, - int filter_type),PNG_EMPTY); - -/* Added at libpng version 1.5.10 */ -#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \ - defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_do_check_palette_indexes, - (png_structrp png_ptr, png_row_infop row_info),PNG_EMPTY); -#endif - -#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED) -PNG_INTERNAL_FUNCTION(void,png_fixed_error,(png_const_structrp png_ptr, - png_const_charp name),PNG_NORETURN); -#endif - -/* Puts 'string' into 'buffer' at buffer[pos], taking care never to overwrite - * the end. Always leaves the buffer nul terminated. Never errors out (and - * there is no error code.) - */ -PNG_INTERNAL_FUNCTION(size_t,png_safecat,(png_charp buffer, size_t bufsize, - size_t pos, png_const_charp string),PNG_EMPTY); - -/* Various internal functions to handle formatted warning messages, currently - * only implemented for warnings. - */ -#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED) -/* Utility to dump an unsigned value into a buffer, given a start pointer and - * and end pointer (which should point just *beyond* the end of the buffer!) - * Returns the pointer to the start of the formatted string. This utility only - * does unsigned values. - */ -PNG_INTERNAL_FUNCTION(png_charp,png_format_number,(png_const_charp start, - png_charp end, int format, png_alloc_size_t number),PNG_EMPTY); - -/* Convenience macro that takes an array: */ -#define PNG_FORMAT_NUMBER(buffer,format,number) \ - png_format_number(buffer, buffer + (sizeof buffer), format, number) - -/* Suggested size for a number buffer (enough for 64 bits and a sign!) */ -#define PNG_NUMBER_BUFFER_SIZE 24 - -/* These are the integer formats currently supported, the name is formed from - * the standard printf(3) format string. - */ -#define PNG_NUMBER_FORMAT_u 1 /* chose unsigned API! */ -#define PNG_NUMBER_FORMAT_02u 2 -#define PNG_NUMBER_FORMAT_d 1 /* chose signed API! */ -#define PNG_NUMBER_FORMAT_02d 2 -#define PNG_NUMBER_FORMAT_x 3 -#define PNG_NUMBER_FORMAT_02x 4 -#define PNG_NUMBER_FORMAT_fixed 5 /* choose the signed API */ -#endif - -#ifdef PNG_WARNINGS_SUPPORTED -/* New defines and members adding in libpng-1.5.4 */ -# define PNG_WARNING_PARAMETER_SIZE 32 -# define PNG_WARNING_PARAMETER_COUNT 8 /* Maximum 9; see pngerror.c */ - -/* An l-value of this type has to be passed to the APIs below to cache the - * values of the parameters to a formatted warning message. - */ -typedef char png_warning_parameters[PNG_WARNING_PARAMETER_COUNT][ - PNG_WARNING_PARAMETER_SIZE]; - -PNG_INTERNAL_FUNCTION(void,png_warning_parameter,(png_warning_parameters p, - int number, png_const_charp string),PNG_EMPTY); - /* Parameters are limited in size to PNG_WARNING_PARAMETER_SIZE characters, - * including the trailing '\0'. - */ -PNG_INTERNAL_FUNCTION(void,png_warning_parameter_unsigned, - (png_warning_parameters p, int number, int format, png_alloc_size_t value), - PNG_EMPTY); - /* Use png_alloc_size_t because it is an unsigned type as big as any we - * need to output. Use the following for a signed value. - */ -PNG_INTERNAL_FUNCTION(void,png_warning_parameter_signed, - (png_warning_parameters p, int number, int format, png_int_32 value), - PNG_EMPTY); - -PNG_INTERNAL_FUNCTION(void,png_formatted_warning,(png_const_structrp png_ptr, - png_warning_parameters p, png_const_charp message),PNG_EMPTY); - /* 'message' follows the X/Open approach of using @1, @2 to insert - * parameters previously supplied using the above functions. Errors in - * specifying the parameters will simply result in garbage substitutions. - */ -#endif - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -/* Application errors (new in 1.6); use these functions (declared below) for - * errors in the parameters or order of API function calls on read. The - * 'warning' should be used for an error that can be handled completely; the - * 'error' for one which can be handled safely but which may lose application - * information or settings. - * - * By default these both result in a png_error call prior to release, while in a - * released version the 'warning' is just a warning. However if the application - * explicitly disables benign errors (explicitly permitting the code to lose - * information) they both turn into warnings. - * - * If benign errors aren't supported they end up as the corresponding base call - * (png_warning or png_error.) - */ -PNG_INTERNAL_FUNCTION(void,png_app_warning,(png_const_structrp png_ptr, - png_const_charp message),PNG_EMPTY); - /* The application provided invalid parameters to an API function or called - * an API function at the wrong time, libpng can completely recover. - */ - -PNG_INTERNAL_FUNCTION(void,png_app_error,(png_const_structrp png_ptr, - png_const_charp message),PNG_EMPTY); - /* As above but libpng will ignore the call, or attempt some other partial - * recovery from the error. - */ -#else -# define png_app_warning(pp,s) png_warning(pp,s) -# define png_app_error(pp,s) png_error(pp,s) -#endif - -PNG_INTERNAL_FUNCTION(void,png_chunk_report,(png_const_structrp png_ptr, - png_const_charp message, int error),PNG_EMPTY); - /* Report a recoverable issue in chunk data. On read this is used to report - * a problem found while reading a particular chunk and the - * png_chunk_benign_error or png_chunk_warning function is used as - * appropriate. On write this is used to report an error that comes from - * data set via an application call to a png_set_ API and png_app_error or - * png_app_warning is used as appropriate. - * - * The 'error' parameter must have one of the following values: - */ -#define PNG_CHUNK_WARNING 0 /* never an error */ -#define PNG_CHUNK_WRITE_ERROR 1 /* an error only on write */ -#define PNG_CHUNK_ERROR 2 /* always an error */ - -/* ASCII to FP interfaces, currently only implemented if sCAL - * support is required. - */ -#if defined(PNG_sCAL_SUPPORTED) -/* MAX_DIGITS is actually the maximum number of characters in an sCAL - * width or height, derived from the precision (number of significant - * digits - a build time settable option) and assumptions about the - * maximum ridiculous exponent. - */ -#define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/) - -#ifdef PNG_FLOATING_POINT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_ascii_from_fp,(png_const_structrp png_ptr, - png_charp ascii, png_size_t size, double fp, unsigned int precision), - PNG_EMPTY); -#endif /* FLOATING_POINT */ - -#ifdef PNG_FIXED_POINT_SUPPORTED -PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr, - png_charp ascii, png_size_t size, png_fixed_point fp),PNG_EMPTY); -#endif /* FIXED_POINT */ -#endif /* sCAL */ - -#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED) -/* An internal API to validate the format of a floating point number. - * The result is the index of the next character. If the number is - * not valid it will be the index of a character in the supposed number. - * - * The format of a number is defined in the PNG extensions specification - * and this API is strictly conformant to that spec, not anyone elses! - * - * The format as a regular expression is: - * - * [+-]?[0-9]+.?([Ee][+-]?[0-9]+)? - * - * or: - * - * [+-]?.[0-9]+(.[0-9]+)?([Ee][+-]?[0-9]+)? - * - * The complexity is that either integer or fraction must be present and the - * fraction is permitted to have no digits only if the integer is present. - * - * NOTE: The dangling E problem. - * There is a PNG valid floating point number in the following: - * - * PNG floating point numbers are not greedy. - * - * Working this out requires *TWO* character lookahead (because of the - * sign), the parser does not do this - it will fail at the 'r' - this - * doesn't matter for PNG sCAL chunk values, but it requires more care - * if the value were ever to be embedded in something more complex. Use - * ANSI-C strtod if you need the lookahead. - */ -/* State table for the parser. */ -#define PNG_FP_INTEGER 0 /* before or in integer */ -#define PNG_FP_FRACTION 1 /* before or in fraction */ -#define PNG_FP_EXPONENT 2 /* before or in exponent */ -#define PNG_FP_STATE 3 /* mask for the above */ -#define PNG_FP_SAW_SIGN 4 /* Saw +/- in current state */ -#define PNG_FP_SAW_DIGIT 8 /* Saw a digit in current state */ -#define PNG_FP_SAW_DOT 16 /* Saw a dot in current state */ -#define PNG_FP_SAW_E 32 /* Saw an E (or e) in current state */ -#define PNG_FP_SAW_ANY 60 /* Saw any of the above 4 */ - -/* These three values don't affect the parser. They are set but not used. - */ -#define PNG_FP_WAS_VALID 64 /* Preceding substring is a valid fp number */ -#define PNG_FP_NEGATIVE 128 /* A negative number, including "-0" */ -#define PNG_FP_NONZERO 256 /* A non-zero value */ -#define PNG_FP_STICKY 448 /* The above three flags */ - -/* This is available for the caller to store in 'state' if required. Do not - * call the parser after setting it (the parser sometimes clears it.) - */ -#define PNG_FP_INVALID 512 /* Available for callers as a distinct value */ - -/* Result codes for the parser (boolean - true meants ok, false means - * not ok yet.) - */ -#define PNG_FP_MAYBE 0 /* The number may be valid in the future */ -#define PNG_FP_OK 1 /* The number is valid */ - -/* Tests on the sticky non-zero and negative flags. To pass these checks - * the state must also indicate that the whole number is valid - this is - * achieved by testing PNG_FP_SAW_DIGIT (see the implementation for why this - * is equivalent to PNG_FP_OK above.) - */ -#define PNG_FP_NZ_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NEGATIVE | PNG_FP_NONZERO) - /* NZ_MASK: the string is valid and a non-zero negative value */ -#define PNG_FP_Z_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NONZERO) - /* Z MASK: the string is valid and a non-zero value. */ - /* PNG_FP_SAW_DIGIT: the string is valid. */ -#define PNG_FP_IS_ZERO(state) (((state) & PNG_FP_Z_MASK) == PNG_FP_SAW_DIGIT) -#define PNG_FP_IS_POSITIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_Z_MASK) -#define PNG_FP_IS_NEGATIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_NZ_MASK) - -/* The actual parser. This can be called repeatedly. It updates - * the index into the string and the state variable (which must - * be initialized to 0). It returns a result code, as above. There - * is no point calling the parser any more if it fails to advance to - * the end of the string - it is stuck on an invalid character (or - * terminated by '\0'). - * - * Note that the pointer will consume an E or even an E+ and then leave - * a 'maybe' state even though a preceding integer.fraction is valid. - * The PNG_FP_WAS_VALID flag indicates that a preceding substring was - * a valid number. It's possible to recover from this by calling - * the parser again (from the start, with state 0) but with a string - * that omits the last character (i.e. set the size to the index of - * the problem character.) This has not been tested within libpng. - */ -PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string, - png_size_t size, int *statep, png_size_tp whereami),PNG_EMPTY); - -/* This is the same but it checks a complete string and returns true - * only if it just contains a floating point number. As of 1.5.4 this - * function also returns the state at the end of parsing the number if - * it was valid (otherwise it returns 0.) This can be used for testing - * for negative or zero values using the sticky flag. - */ -PNG_INTERNAL_FUNCTION(int,png_check_fp_string,(png_const_charp string, - png_size_t size),PNG_EMPTY); -#endif /* pCAL || sCAL */ - -#if defined(PNG_GAMMA_SUPPORTED) ||\ - defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED) -/* Added at libpng version 1.5.0 */ -/* This is a utility to provide a*times/div (rounded) and indicate - * if there is an overflow. The result is a boolean - false (0) - * for overflow, true (1) if no overflow, in which case *res - * holds the result. - */ -PNG_INTERNAL_FUNCTION(int,png_muldiv,(png_fixed_point_p res, png_fixed_point a, - png_int_32 multiplied_by, png_int_32 divided_by),PNG_EMPTY); -#endif - -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED) -/* Same deal, but issue a warning on overflow and return 0. */ -PNG_INTERNAL_FUNCTION(png_fixed_point,png_muldiv_warn, - (png_const_structrp png_ptr, png_fixed_point a, png_int_32 multiplied_by, - png_int_32 divided_by),PNG_EMPTY); -#endif - -#ifdef PNG_GAMMA_SUPPORTED -/* Calculate a reciprocal - used for gamma values. This returns - * 0 if the argument is 0 in order to maintain an undefined value; - * there are no warnings. - */ -PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal,(png_fixed_point a), - PNG_EMPTY); - -#ifdef PNG_READ_GAMMA_SUPPORTED -/* The same but gives a reciprocal of the product of two fixed point - * values. Accuracy is suitable for gamma calculations but this is - * not exact - use png_muldiv for that. Only required at present on read. - */ -PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal2,(png_fixed_point a, - png_fixed_point b),PNG_EMPTY); -#endif - -/* Return true if the gamma value is significantly different from 1.0 */ -PNG_INTERNAL_FUNCTION(int,png_gamma_significant,(png_fixed_point gamma_value), - PNG_EMPTY); -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED -/* Internal fixed point gamma correction. These APIs are called as - * required to convert single values - they don't need to be fast, - * they are not used when processing image pixel values. - * - * While the input is an 'unsigned' value it must actually be the - * correct bit value - 0..255 or 0..65535 as required. - */ -PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_correct,(png_structrp png_ptr, - unsigned int value, png_fixed_point gamma_value),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_16bit_correct,(unsigned int value, - png_fixed_point gamma_value),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(png_byte,png_gamma_8bit_correct,(unsigned int value, - png_fixed_point gamma_value),PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_destroy_gamma_table,(png_structrp png_ptr), - PNG_EMPTY); -PNG_INTERNAL_FUNCTION(void,png_build_gamma_table,(png_structrp png_ptr, - int bit_depth),PNG_EMPTY); -#endif - -/* SIMPLIFIED READ/WRITE SUPPORT */ -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\ - defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) -/* The internal structure that png_image::opaque points to. */ -typedef struct png_control -{ - png_structp png_ptr; - png_infop info_ptr; - png_voidp error_buf; /* Always a jmp_buf at present. */ - - png_const_bytep memory; /* Memory buffer. */ - png_size_t size; /* Size of the memory buffer. */ - - unsigned int for_write :1; /* Otherwise it is a read structure */ - unsigned int owned_file :1; /* We own the file in io_ptr */ -} png_control; - -/* Return the pointer to the jmp_buf from a png_control: necessary because C - * does not reveal the type of the elements of jmp_buf. - */ -#ifdef __cplusplus -# define png_control_jmp_buf(pc) (((jmp_buf*)((pc)->error_buf))[0]) -#else -# define png_control_jmp_buf(pc) ((pc)->error_buf) -#endif - -/* Utility to safely execute a piece of libpng code catching and logging any - * errors that might occur. Returns true on success, false on failure (either - * of the function or as a result of a png_error.) - */ -PNG_INTERNAL_CALLBACK(void,png_safe_error,(png_structp png_ptr, - png_const_charp error_message),PNG_NORETURN); - -#ifdef PNG_WARNINGS_SUPPORTED -PNG_INTERNAL_CALLBACK(void,png_safe_warning,(png_structp png_ptr, - png_const_charp warning_message),PNG_EMPTY); -#else -# define png_safe_warning 0/*dummy argument*/ -#endif - -PNG_INTERNAL_FUNCTION(int,png_safe_execute,(png_imagep image, - int (*function)(png_voidp), png_voidp arg),PNG_EMPTY); - -/* Utility to log an error; this also cleans up the png_image; the function - * always returns 0 (false). - */ -PNG_INTERNAL_FUNCTION(int,png_image_error,(png_imagep image, - png_const_charp error_message),PNG_EMPTY); - -#ifndef PNG_SIMPLIFIED_READ_SUPPORTED -/* png_image_free is used by the write code but not exported */ -PNG_INTERNAL_FUNCTION(void, png_image_free, (png_imagep image), PNG_EMPTY); -#endif /* !SIMPLIFIED_READ */ - -#endif /* SIMPLIFIED READ/WRITE */ - -/* These are initialization functions for hardware specific PNG filter - * optimizations; list these here then select the appropriate one at compile - * time using the macro PNG_FILTER_OPTIMIZATIONS. If the macro is not defined - * the generic code is used. - */ -#ifdef PNG_FILTER_OPTIMIZATIONS -PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr, - unsigned int bpp), PNG_EMPTY); - /* Just declare the optimization that will be used */ -#else - /* List *all* the possible optimizations here - this branch is required if - * the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in - * CFLAGS in place of CPPFLAGS *and* uses symbol prefixing. - */ -# if PNG_ARM_NEON_OPT > 0 -PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); -#endif - -#if PNG_MIPS_MSA_OPT > 0 -PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_msa, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); -#endif - -# if PNG_INTEL_SSE_IMPLEMENTATION > 0 -PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_sse2, - (png_structp png_ptr, unsigned int bpp), PNG_EMPTY); -# endif -#endif - -PNG_INTERNAL_FUNCTION(png_uint_32, png_check_keyword, (png_structrp png_ptr, - png_const_charp key, png_bytep new_key), PNG_EMPTY); - -/* Maintainer: Put new private prototypes here ^ */ - -#include "pngdebug.h" - -#ifdef __cplusplus -} -#endif - -#endif /* PNG_VERSION_INFO_ONLY */ -#endif /* PNGPRIV_H */ diff --git a/project/jni/png/pngread.c b/project/jni/png/pngread.c deleted file mode 100644 index da32e9ad9..000000000 --- a/project/jni/png/pngread.c +++ /dev/null @@ -1,4219 +0,0 @@ - -/* pngread.c - read a PNG file - * - * Last changed in libpng 1.6.33 [September 28, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file contains routines that an application calls directly to - * read a PNG file or stream. - */ - -#include "pngpriv.h" -#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) && defined(PNG_STDIO_SUPPORTED) -# include -#endif - -#ifdef PNG_READ_SUPPORTED - -/* Create a PNG structure for reading, and allocate any memory needed. */ -PNG_FUNCTION(png_structp,PNGAPI -png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED) -{ -#ifndef PNG_USER_MEM_SUPPORTED - png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr, - error_fn, warn_fn, NULL, NULL, NULL); -#else - return png_create_read_struct_2(user_png_ver, error_ptr, error_fn, - warn_fn, NULL, NULL, NULL); -} - -/* Alternate create PNG structure for reading, and allocate any memory - * needed. - */ -PNG_FUNCTION(png_structp,PNGAPI -png_create_read_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED) -{ - png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr, - error_fn, warn_fn, mem_ptr, malloc_fn, free_fn); -#endif /* USER_MEM */ - - if (png_ptr != NULL) - { - png_ptr->mode = PNG_IS_READ_STRUCT; - - /* Added in libpng-1.6.0; this can be used to detect a read structure if - * required (it will be zero in a write structure.) - */ -# ifdef PNG_SEQUENTIAL_READ_SUPPORTED - png_ptr->IDAT_read_size = PNG_IDAT_READ_SIZE; -# endif - -# ifdef PNG_BENIGN_READ_ERRORS_SUPPORTED - png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; - - /* In stable builds only warn if an application error can be completely - * handled. - */ -# if PNG_RELEASE_BUILD - png_ptr->flags |= PNG_FLAG_APP_WARNINGS_WARN; -# endif -# endif - - /* TODO: delay this, it can be done in png_init_io (if the app doesn't - * do it itself) avoiding setting the default function if it is not - * required. - */ - png_set_read_fn(png_ptr, NULL, NULL); - } - - return png_ptr; -} - - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the information before the actual image data. This has been - * changed in v0.90 to allow reading a file that already has the magic - * bytes read from the stream. You can tell libpng how many bytes have - * been read from the beginning of the stream (up to the maximum of 8) - * via png_set_sig_bytes(), and we will only check the remaining bytes - * here. The application can then have access to the signature bytes we - * read if it is determined that this isn't a valid PNG file. - */ -void PNGAPI -png_read_info(png_structrp png_ptr, png_inforp info_ptr) -{ -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - int keep; -#endif - - png_debug(1, "in png_read_info"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - /* Read and check the PNG file signature. */ - png_read_sig(png_ptr, info_ptr); - - for (;;) - { - png_uint_32 length = png_read_chunk_header(png_ptr); - png_uint_32 chunk_name = png_ptr->chunk_name; - - /* IDAT logic needs to happen here to simplify getting the two flags - * right. - */ - if (chunk_name == png_IDAT) - { - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "Missing IHDR before IDAT"); - - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - (png_ptr->mode & PNG_HAVE_PLTE) == 0) - png_chunk_error(png_ptr, "Missing PLTE before IDAT"); - - else if ((png_ptr->mode & PNG_AFTER_IDAT) != 0) - png_chunk_benign_error(png_ptr, "Too many IDATs found"); - - png_ptr->mode |= PNG_HAVE_IDAT; - } - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; - png_ptr->mode |= PNG_AFTER_IDAT; - } - - /* This should be a binary subdivision search or a hash for - * matching the chunk name rather than a linear search. - */ - if (chunk_name == png_IHDR) - png_handle_IHDR(png_ptr, info_ptr, length); - - else if (chunk_name == png_IEND) - png_handle_IEND(png_ptr, info_ptr, length); - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0) - { - png_handle_unknown(png_ptr, info_ptr, length, keep); - - if (chunk_name == png_PLTE) - png_ptr->mode |= PNG_HAVE_PLTE; - - else if (chunk_name == png_IDAT) - { - png_ptr->idat_size = 0; /* It has been consumed */ - break; - } - } -#endif - else if (chunk_name == png_PLTE) - png_handle_PLTE(png_ptr, info_ptr, length); - - else if (chunk_name == png_IDAT) - { - png_ptr->idat_size = length; - break; - } - -#ifdef PNG_READ_bKGD_SUPPORTED - else if (chunk_name == png_bKGD) - png_handle_bKGD(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_cHRM_SUPPORTED - else if (chunk_name == png_cHRM) - png_handle_cHRM(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_eXIf_SUPPORTED - else if (chunk_name == png_eXIf) - png_handle_eXIf(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_gAMA_SUPPORTED - else if (chunk_name == png_gAMA) - png_handle_gAMA(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_hIST_SUPPORTED - else if (chunk_name == png_hIST) - png_handle_hIST(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_oFFs_SUPPORTED - else if (chunk_name == png_oFFs) - png_handle_oFFs(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED - else if (chunk_name == png_pCAL) - png_handle_pCAL(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sCAL_SUPPORTED - else if (chunk_name == png_sCAL) - png_handle_sCAL(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_pHYs_SUPPORTED - else if (chunk_name == png_pHYs) - png_handle_pHYs(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sBIT_SUPPORTED - else if (chunk_name == png_sBIT) - png_handle_sBIT(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sRGB_SUPPORTED - else if (chunk_name == png_sRGB) - png_handle_sRGB(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_iCCP_SUPPORTED - else if (chunk_name == png_iCCP) - png_handle_iCCP(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sPLT_SUPPORTED - else if (chunk_name == png_sPLT) - png_handle_sPLT(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_tEXt_SUPPORTED - else if (chunk_name == png_tEXt) - png_handle_tEXt(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_tIME_SUPPORTED - else if (chunk_name == png_tIME) - png_handle_tIME(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_tRNS_SUPPORTED - else if (chunk_name == png_tRNS) - png_handle_tRNS(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_zTXt_SUPPORTED - else if (chunk_name == png_zTXt) - png_handle_zTXt(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_iTXt_SUPPORTED - else if (chunk_name == png_iTXt) - png_handle_iTXt(png_ptr, info_ptr, length); -#endif - - else - png_handle_unknown(png_ptr, info_ptr, length, - PNG_HANDLE_CHUNK_AS_DEFAULT); - } -} -#endif /* SEQUENTIAL_READ */ - -/* Optional call to update the users info_ptr structure */ -void PNGAPI -png_read_update_info(png_structrp png_ptr, png_inforp info_ptr) -{ - png_debug(1, "in png_read_update_info"); - - if (png_ptr != NULL) - { - if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0) - { - png_read_start_row(png_ptr); - -# ifdef PNG_READ_TRANSFORMS_SUPPORTED - png_read_transform_info(png_ptr, info_ptr); -# else - PNG_UNUSED(info_ptr) -# endif - } - - /* New in 1.6.0 this avoids the bug of doing the initializations twice */ - else - png_app_error(png_ptr, - "png_read_update_info/png_start_read_image: duplicate call"); - } -} - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Initialize palette, background, etc, after transformations - * are set, but before any reading takes place. This allows - * the user to obtain a gamma-corrected palette, for example. - * If the user doesn't call this, we will do it ourselves. - */ -void PNGAPI -png_start_read_image(png_structrp png_ptr) -{ - png_debug(1, "in png_start_read_image"); - - if (png_ptr != NULL) - { - if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0) - png_read_start_row(png_ptr); - - /* New in 1.6.0 this avoids the bug of doing the initializations twice */ - else - png_app_error(png_ptr, - "png_start_read_image/png_read_update_info: duplicate call"); - } -} -#endif /* SEQUENTIAL_READ */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -#ifdef PNG_MNG_FEATURES_SUPPORTED -/* Undoes intrapixel differencing, - * NOTE: this is apparently only supported in the 'sequential' reader. - */ -static void -png_do_read_intrapixel(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_read_intrapixel"); - - if ( - (row_info->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - int bytes_per_pixel; - png_uint_32 row_width = row_info->width; - - if (row_info->bit_depth == 8) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 3; - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 4; - - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - *(rp) = (png_byte)((256 + *rp + *(rp + 1)) & 0xff); - *(rp+2) = (png_byte)((256 + *(rp + 2) + *(rp + 1)) & 0xff); - } - } - else if (row_info->bit_depth == 16) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 6; - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 8; - - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - png_uint_32 s0 = (png_uint_32)(*(rp ) << 8) | *(rp + 1); - png_uint_32 s1 = (png_uint_32)(*(rp + 2) << 8) | *(rp + 3); - png_uint_32 s2 = (png_uint_32)(*(rp + 4) << 8) | *(rp + 5); - png_uint_32 red = (s0 + s1 + 65536) & 0xffff; - png_uint_32 blue = (s2 + s1 + 65536) & 0xffff; - *(rp ) = (png_byte)((red >> 8) & 0xff); - *(rp + 1) = (png_byte)(red & 0xff); - *(rp + 4) = (png_byte)((blue >> 8) & 0xff); - *(rp + 5) = (png_byte)(blue & 0xff); - } - } - } -} -#endif /* MNG_FEATURES */ - -void PNGAPI -png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row) -{ - png_row_info row_info; - - if (png_ptr == NULL) - return; - - png_debug2(1, "in png_read_row (row %lu, pass %d)", - (unsigned long)png_ptr->row_number, png_ptr->pass); - - /* png_read_start_row sets the information (in particular iwidth) for this - * interlace pass. - */ - if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0) - png_read_start_row(png_ptr); - - /* 1.5.6: row_info moved out of png_struct to a local here. */ - row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */ - row_info.color_type = png_ptr->color_type; - row_info.bit_depth = png_ptr->bit_depth; - row_info.channels = png_ptr->channels; - row_info.pixel_depth = png_ptr->pixel_depth; - row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width); - -#ifdef PNG_WARNINGS_SUPPORTED - if (png_ptr->row_number == 0 && png_ptr->pass == 0) - { - /* Check for transforms that have been set but were defined out */ -#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED) - if ((png_ptr->transformations & PNG_INVERT_MONO) != 0) - png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined"); -#endif - -#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED) - if ((png_ptr->transformations & PNG_FILLER) != 0) - png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined"); -#endif - -#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \ - !defined(PNG_READ_PACKSWAP_SUPPORTED) - if ((png_ptr->transformations & PNG_PACKSWAP) != 0) - png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined"); -#endif - -#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED) - if ((png_ptr->transformations & PNG_PACK) != 0) - png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined"); -#endif - -#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) - if ((png_ptr->transformations & PNG_SHIFT) != 0) - png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined"); -#endif - -#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED) - if ((png_ptr->transformations & PNG_BGR) != 0) - png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined"); -#endif - -#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED) - if ((png_ptr->transformations & PNG_SWAP_BYTES) != 0) - png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined"); -#endif - } -#endif /* WARNINGS */ - -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* If interlaced and we do not need a new row, combine row and return. - * Notice that the pixels we have from previous rows have been transformed - * already; we can only combine like with like (transformed or - * untransformed) and, because of the libpng API for interlaced images, this - * means we must transform before de-interlacing. - */ - if (png_ptr->interlaced != 0 && - (png_ptr->transformations & PNG_INTERLACE) != 0) - { - switch (png_ptr->pass) - { - case 0: - if (png_ptr->row_number & 0x07) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - png_read_finish_row(png_ptr); - return; - } - break; - - case 1: - if ((png_ptr->row_number & 0x07) || png_ptr->width < 5) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - - png_read_finish_row(png_ptr); - return; - } - break; - - case 2: - if ((png_ptr->row_number & 0x07) != 4) - { - if (dsp_row != NULL && (png_ptr->row_number & 4)) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - - png_read_finish_row(png_ptr); - return; - } - break; - - case 3: - if ((png_ptr->row_number & 3) || png_ptr->width < 3) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - - png_read_finish_row(png_ptr); - return; - } - break; - - case 4: - if ((png_ptr->row_number & 3) != 2) - { - if (dsp_row != NULL && (png_ptr->row_number & 2)) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - - png_read_finish_row(png_ptr); - return; - } - break; - - case 5: - if ((png_ptr->row_number & 1) || png_ptr->width < 2) - { - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - - png_read_finish_row(png_ptr); - return; - } - break; - - default: - case 6: - if ((png_ptr->row_number & 1) == 0) - { - png_read_finish_row(png_ptr); - return; - } - break; - } - } -#endif - - if ((png_ptr->mode & PNG_HAVE_IDAT) == 0) - png_error(png_ptr, "Invalid attempt to read row data"); - - /* Fill the row with IDAT data: */ - png_ptr->row_buf[0]=255; /* to force error if no data was found */ - png_read_IDAT_data(png_ptr, png_ptr->row_buf, row_info.rowbytes + 1); - - if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE) - { - if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST) - png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1, - png_ptr->prev_row + 1, png_ptr->row_buf[0]); - else - png_error(png_ptr, "bad adaptive filter value"); - } - - /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before - * 1.5.6, while the buffer really is this big in current versions of libpng - * it may not be in the future, so this was changed just to copy the - * interlaced count: - */ - memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1); - -#ifdef PNG_MNG_FEATURES_SUPPORTED - if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) != 0 && - (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING)) - { - /* Intrapixel differencing */ - png_do_read_intrapixel(&row_info, png_ptr->row_buf + 1); - } -#endif - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED - if (png_ptr->transformations) - png_do_read_transformations(png_ptr, &row_info); -#endif - - /* The transformed pixel depth should match the depth now in row_info. */ - if (png_ptr->transformed_pixel_depth == 0) - { - png_ptr->transformed_pixel_depth = row_info.pixel_depth; - if (row_info.pixel_depth > png_ptr->maximum_pixel_depth) - png_error(png_ptr, "sequential row overflow"); - } - - else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth) - png_error(png_ptr, "internal sequential row size calculation error"); - -#ifdef PNG_READ_INTERLACING_SUPPORTED - /* Expand interlaced rows to full size */ - if (png_ptr->interlaced != 0 && - (png_ptr->transformations & PNG_INTERLACE) != 0) - { - if (png_ptr->pass < 6) - png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass, - png_ptr->transformations); - - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, 1/*display*/); - - if (row != NULL) - png_combine_row(png_ptr, row, 0/*row*/); - } - - else -#endif - { - if (row != NULL) - png_combine_row(png_ptr, row, -1/*ignored*/); - - if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, -1/*ignored*/); - } - png_read_finish_row(png_ptr); - - if (png_ptr->read_row_fn != NULL) - (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass); - -} -#endif /* SEQUENTIAL_READ */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read one or more rows of image data. If the image is interlaced, - * and png_set_interlace_handling() has been called, the rows need to - * contain the contents of the rows from the previous pass. If the - * image has alpha or transparency, and png_handle_alpha()[*] has been - * called, the rows contents must be initialized to the contents of the - * screen. - * - * "row" holds the actual image, and pixels are placed in it - * as they arrive. If the image is displayed after each pass, it will - * appear to "sparkle" in. "display_row" can be used to display a - * "chunky" progressive image, with finer detail added as it becomes - * available. If you do not want this "chunky" display, you may pass - * NULL for display_row. If you do not want the sparkle display, and - * you have not called png_handle_alpha(), you may pass NULL for rows. - * If you have called png_handle_alpha(), and the image has either an - * alpha channel or a transparency chunk, you must provide a buffer for - * rows. In this case, you do not have to provide a display_row buffer - * also, but you may. If the image is not interlaced, or if you have - * not called png_set_interlace_handling(), the display_row buffer will - * be ignored, so pass NULL to it. - * - * [*] png_handle_alpha() does not exist yet, as of this version of libpng - */ - -void PNGAPI -png_read_rows(png_structrp png_ptr, png_bytepp row, - png_bytepp display_row, png_uint_32 num_rows) -{ - png_uint_32 i; - png_bytepp rp; - png_bytepp dp; - - png_debug(1, "in png_read_rows"); - - if (png_ptr == NULL) - return; - - rp = row; - dp = display_row; - if (rp != NULL && dp != NULL) - for (i = 0; i < num_rows; i++) - { - png_bytep rptr = *rp++; - png_bytep dptr = *dp++; - - png_read_row(png_ptr, rptr, dptr); - } - - else if (rp != NULL) - for (i = 0; i < num_rows; i++) - { - png_bytep rptr = *rp; - png_read_row(png_ptr, rptr, NULL); - rp++; - } - - else if (dp != NULL) - for (i = 0; i < num_rows; i++) - { - png_bytep dptr = *dp; - png_read_row(png_ptr, NULL, dptr); - dp++; - } -} -#endif /* SEQUENTIAL_READ */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the entire image. If the image has an alpha channel or a tRNS - * chunk, and you have called png_handle_alpha()[*], you will need to - * initialize the image to the current image that PNG will be overlaying. - * We set the num_rows again here, in case it was incorrectly set in - * png_read_start_row() by a call to png_read_update_info() or - * png_start_read_image() if png_set_interlace_handling() wasn't called - * prior to either of these functions like it should have been. You can - * only call this function once. If you desire to have an image for - * each pass of a interlaced image, use png_read_rows() instead. - * - * [*] png_handle_alpha() does not exist yet, as of this version of libpng - */ -void PNGAPI -png_read_image(png_structrp png_ptr, png_bytepp image) -{ - png_uint_32 i, image_height; - int pass, j; - png_bytepp rp; - - png_debug(1, "in png_read_image"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_READ_INTERLACING_SUPPORTED - if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0) - { - pass = png_set_interlace_handling(png_ptr); - /* And make sure transforms are initialized. */ - png_start_read_image(png_ptr); - } - else - { - if (png_ptr->interlaced != 0 && - (png_ptr->transformations & PNG_INTERLACE) == 0) - { - /* Caller called png_start_read_image or png_read_update_info without - * first turning on the PNG_INTERLACE transform. We can fix this here, - * but the caller should do it! - */ - png_warning(png_ptr, "Interlace handling should be turned on when " - "using png_read_image"); - /* Make sure this is set correctly */ - png_ptr->num_rows = png_ptr->height; - } - - /* Obtain the pass number, which also turns on the PNG_INTERLACE flag in - * the above error case. - */ - pass = png_set_interlace_handling(png_ptr); - } -#else - if (png_ptr->interlaced) - png_error(png_ptr, - "Cannot read interlaced image -- interlace handler disabled"); - - pass = 1; -#endif - - image_height=png_ptr->height; - - for (j = 0; j < pass; j++) - { - rp = image; - for (i = 0; i < image_height; i++) - { - png_read_row(png_ptr, *rp, NULL); - rp++; - } - } -} -#endif /* SEQUENTIAL_READ */ - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -/* Read the end of the PNG file. Will not read past the end of the - * file, will verify the end is accurate, and will read any comments - * or time information at the end of the file, if info is not NULL. - */ -void PNGAPI -png_read_end(png_structrp png_ptr, png_inforp info_ptr) -{ -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - int keep; -#endif - - png_debug(1, "in png_read_end"); - - if (png_ptr == NULL) - return; - - /* If png_read_end is called in the middle of reading the rows there may - * still be pending IDAT data and an owned zstream. Deal with this here. - */ -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - if (png_chunk_unknown_handling(png_ptr, png_IDAT) == 0) -#endif - png_read_finish_IDAT(png_ptr); - -#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED - /* Report invalid palette index; added at libng-1.5.10 */ - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - png_ptr->num_palette_max > png_ptr->num_palette) - png_benign_error(png_ptr, "Read palette index exceeding num_palette"); -#endif - - do - { - png_uint_32 length = png_read_chunk_header(png_ptr); - png_uint_32 chunk_name = png_ptr->chunk_name; - - if (chunk_name != png_IDAT) - png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; - - if (chunk_name == png_IEND) - png_handle_IEND(png_ptr, info_ptr, length); - - else if (chunk_name == png_IHDR) - png_handle_IHDR(png_ptr, info_ptr, length); - - else if (info_ptr == NULL) - png_crc_finish(png_ptr, length); - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED - else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0) - { - if (chunk_name == png_IDAT) - { - if ((length > 0 && !(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED)) - || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) != 0) - png_benign_error(png_ptr, ".Too many IDATs found"); - } - png_handle_unknown(png_ptr, info_ptr, length, keep); - if (chunk_name == png_PLTE) - png_ptr->mode |= PNG_HAVE_PLTE; - } -#endif - - else if (chunk_name == png_IDAT) - { - /* Zero length IDATs are legal after the last IDAT has been - * read, but not after other chunks have been read. 1.6 does not - * always read all the deflate data; specifically it cannot be relied - * upon to read the Adler32 at the end. If it doesn't ignore IDAT - * chunks which are longer than zero as well: - */ - if ((length > 0 && !(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED)) - || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT) != 0) - png_benign_error(png_ptr, "..Too many IDATs found"); - - png_crc_finish(png_ptr, length); - } - else if (chunk_name == png_PLTE) - png_handle_PLTE(png_ptr, info_ptr, length); - -#ifdef PNG_READ_bKGD_SUPPORTED - else if (chunk_name == png_bKGD) - png_handle_bKGD(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_cHRM_SUPPORTED - else if (chunk_name == png_cHRM) - png_handle_cHRM(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_eXIf_SUPPORTED - else if (chunk_name == png_eXIf) - png_handle_eXIf(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_gAMA_SUPPORTED - else if (chunk_name == png_gAMA) - png_handle_gAMA(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_hIST_SUPPORTED - else if (chunk_name == png_hIST) - png_handle_hIST(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_oFFs_SUPPORTED - else if (chunk_name == png_oFFs) - png_handle_oFFs(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED - else if (chunk_name == png_pCAL) - png_handle_pCAL(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sCAL_SUPPORTED - else if (chunk_name == png_sCAL) - png_handle_sCAL(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_pHYs_SUPPORTED - else if (chunk_name == png_pHYs) - png_handle_pHYs(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sBIT_SUPPORTED - else if (chunk_name == png_sBIT) - png_handle_sBIT(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sRGB_SUPPORTED - else if (chunk_name == png_sRGB) - png_handle_sRGB(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_iCCP_SUPPORTED - else if (chunk_name == png_iCCP) - png_handle_iCCP(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_sPLT_SUPPORTED - else if (chunk_name == png_sPLT) - png_handle_sPLT(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_tEXt_SUPPORTED - else if (chunk_name == png_tEXt) - png_handle_tEXt(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_tIME_SUPPORTED - else if (chunk_name == png_tIME) - png_handle_tIME(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_tRNS_SUPPORTED - else if (chunk_name == png_tRNS) - png_handle_tRNS(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_zTXt_SUPPORTED - else if (chunk_name == png_zTXt) - png_handle_zTXt(png_ptr, info_ptr, length); -#endif - -#ifdef PNG_READ_iTXt_SUPPORTED - else if (chunk_name == png_iTXt) - png_handle_iTXt(png_ptr, info_ptr, length); -#endif - - else - png_handle_unknown(png_ptr, info_ptr, length, - PNG_HANDLE_CHUNK_AS_DEFAULT); - } while ((png_ptr->mode & PNG_HAVE_IEND) == 0); -} -#endif /* SEQUENTIAL_READ */ - -/* Free all memory used in the read struct */ -static void -png_read_destroy(png_structrp png_ptr) -{ - png_debug(1, "in png_read_destroy"); - -#ifdef PNG_READ_GAMMA_SUPPORTED - png_destroy_gamma_table(png_ptr); -#endif - - png_free(png_ptr, png_ptr->big_row_buf); - png_ptr->big_row_buf = NULL; - png_free(png_ptr, png_ptr->big_prev_row); - png_ptr->big_prev_row = NULL; - png_free(png_ptr, png_ptr->read_buffer); - png_ptr->read_buffer = NULL; - -#ifdef PNG_READ_QUANTIZE_SUPPORTED - png_free(png_ptr, png_ptr->palette_lookup); - png_ptr->palette_lookup = NULL; - png_free(png_ptr, png_ptr->quantize_index); - png_ptr->quantize_index = NULL; -#endif - - if ((png_ptr->free_me & PNG_FREE_PLTE) != 0) - { - png_zfree(png_ptr, png_ptr->palette); - png_ptr->palette = NULL; - } - png_ptr->free_me &= ~PNG_FREE_PLTE; - -#if defined(PNG_tRNS_SUPPORTED) || \ - defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - if ((png_ptr->free_me & PNG_FREE_TRNS) != 0) - { - png_free(png_ptr, png_ptr->trans_alpha); - png_ptr->trans_alpha = NULL; - } - png_ptr->free_me &= ~PNG_FREE_TRNS; -#endif - - inflateEnd(&png_ptr->zstream); - -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED - png_free(png_ptr, png_ptr->save_buffer); - png_ptr->save_buffer = NULL; -#endif - -#if defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) && \ - defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; -#endif - -#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list = NULL; -#endif - - /* NOTE: the 'setjmp' buffer may still be allocated and the memory and error - * callbacks are still set at this point. They are required to complete the - * destruction of the png_struct itself. - */ -} - -/* Free all memory used by the read */ -void PNGAPI -png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, - png_infopp end_info_ptr_ptr) -{ - png_structrp png_ptr = NULL; - - png_debug(1, "in png_destroy_read_struct"); - - if (png_ptr_ptr != NULL) - png_ptr = *png_ptr_ptr; - - if (png_ptr == NULL) - return; - - /* libpng 1.6.0: use the API to destroy info structs to ensure consistent - * behavior. Prior to 1.6.0 libpng did extra 'info' destruction in this API. - * The extra was, apparently, unnecessary yet this hides memory leak bugs. - */ - png_destroy_info_struct(png_ptr, end_info_ptr_ptr); - png_destroy_info_struct(png_ptr, info_ptr_ptr); - - *png_ptr_ptr = NULL; - png_read_destroy(png_ptr); - png_destroy_png_struct(png_ptr); -} - -void PNGAPI -png_set_read_status_fn(png_structrp png_ptr, png_read_status_ptr read_row_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->read_row_fn = read_row_fn; -} - - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -#ifdef PNG_INFO_IMAGE_SUPPORTED -void PNGAPI -png_read_png(png_structrp png_ptr, png_inforp info_ptr, - int transforms, voidp params) -{ - if (png_ptr == NULL || info_ptr == NULL) - return; - - /* png_read_info() gives us all of the information from the - * PNG file before the first IDAT (image data chunk). - */ - png_read_info(png_ptr, info_ptr); - if (info_ptr->height > PNG_UINT_32_MAX/(sizeof (png_bytep))) - png_error(png_ptr, "Image is too high to process with png_read_png()"); - - /* -------------- image transformations start here ------------------- */ - /* libpng 1.6.10: add code to cause a png_app_error if a selected TRANSFORM - * is not implemented. This will only happen in de-configured (non-default) - * libpng builds. The results can be unexpected - png_read_png may return - * short or mal-formed rows because the transform is skipped. - */ - - /* Tell libpng to strip 16-bit/color files down to 8 bits per color. - */ - if ((transforms & PNG_TRANSFORM_SCALE_16) != 0) - /* Added at libpng-1.5.4. "strip_16" produces the same result that it - * did in earlier versions, while "scale_16" is now more accurate. - */ -#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED - png_set_scale_16(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SCALE_16 not supported"); -#endif - - /* If both SCALE and STRIP are required pngrtran will effectively cancel the - * latter by doing SCALE first. This is ok and allows apps not to check for - * which is supported to get the right answer. - */ - if ((transforms & PNG_TRANSFORM_STRIP_16) != 0) -#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED - png_set_strip_16(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_STRIP_16 not supported"); -#endif - - /* Strip alpha bytes from the input data without combining with - * the background (not recommended). - */ - if ((transforms & PNG_TRANSFORM_STRIP_ALPHA) != 0) -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - png_set_strip_alpha(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_STRIP_ALPHA not supported"); -#endif - - /* Extract multiple pixels with bit depths of 1, 2, or 4 from a single - * byte into separate bytes (useful for paletted and grayscale images). - */ - if ((transforms & PNG_TRANSFORM_PACKING) != 0) -#ifdef PNG_READ_PACK_SUPPORTED - png_set_packing(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_PACKING not supported"); -#endif - - /* Change the order of packed pixels to least significant bit first - * (not useful if you are using png_set_packing). - */ - if ((transforms & PNG_TRANSFORM_PACKSWAP) != 0) -#ifdef PNG_READ_PACKSWAP_SUPPORTED - png_set_packswap(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_PACKSWAP not supported"); -#endif - - /* Expand paletted colors into true RGB triplets - * Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel - * Expand paletted or RGB images with transparency to full alpha - * channels so the data will be available as RGBA quartets. - */ - if ((transforms & PNG_TRANSFORM_EXPAND) != 0) -#ifdef PNG_READ_EXPAND_SUPPORTED - png_set_expand(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_EXPAND not supported"); -#endif - - /* We don't handle background color or gamma transformation or quantizing. - */ - - /* Invert monochrome files to have 0 as white and 1 as black - */ - if ((transforms & PNG_TRANSFORM_INVERT_MONO) != 0) -#ifdef PNG_READ_INVERT_SUPPORTED - png_set_invert_mono(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_INVERT_MONO not supported"); -#endif - - /* If you want to shift the pixel values from the range [0,255] or - * [0,65535] to the original [0,7] or [0,31], or whatever range the - * colors were originally in: - */ - if ((transforms & PNG_TRANSFORM_SHIFT) != 0) -#ifdef PNG_READ_SHIFT_SUPPORTED - if ((info_ptr->valid & PNG_INFO_sBIT) != 0) - png_set_shift(png_ptr, &info_ptr->sig_bit); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SHIFT not supported"); -#endif - - /* Flip the RGB pixels to BGR (or RGBA to BGRA) */ - if ((transforms & PNG_TRANSFORM_BGR) != 0) -#ifdef PNG_READ_BGR_SUPPORTED - png_set_bgr(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_BGR not supported"); -#endif - - /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ - if ((transforms & PNG_TRANSFORM_SWAP_ALPHA) != 0) -#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED - png_set_swap_alpha(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SWAP_ALPHA not supported"); -#endif - - /* Swap bytes of 16-bit files to least significant byte first */ - if ((transforms & PNG_TRANSFORM_SWAP_ENDIAN) != 0) -#ifdef PNG_READ_SWAP_SUPPORTED - png_set_swap(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SWAP_ENDIAN not supported"); -#endif - -/* Added at libpng-1.2.41 */ - /* Invert the alpha channel from opacity to transparency */ - if ((transforms & PNG_TRANSFORM_INVERT_ALPHA) != 0) -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - png_set_invert_alpha(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_INVERT_ALPHA not supported"); -#endif - -/* Added at libpng-1.2.41 */ - /* Expand grayscale image to RGB */ - if ((transforms & PNG_TRANSFORM_GRAY_TO_RGB) != 0) -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - png_set_gray_to_rgb(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_GRAY_TO_RGB not supported"); -#endif - -/* Added at libpng-1.5.4 */ - if ((transforms & PNG_TRANSFORM_EXPAND_16) != 0) -#ifdef PNG_READ_EXPAND_16_SUPPORTED - png_set_expand_16(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_EXPAND_16 not supported"); -#endif - - /* We don't handle adding filler bytes */ - - /* We use png_read_image and rely on that for interlace handling, but we also - * call png_read_update_info therefore must turn on interlace handling now: - */ - (void)png_set_interlace_handling(png_ptr); - - /* Optional call to gamma correct and add the background to the palette - * and update info structure. REQUIRED if you are expecting libpng to - * update the palette for you (i.e., you selected such a transform above). - */ - png_read_update_info(png_ptr, info_ptr); - - /* -------------- image transformations end here ------------------- */ - - png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); - if (info_ptr->row_pointers == NULL) - { - png_uint_32 iptr; - - info_ptr->row_pointers = png_voidcast(png_bytepp, png_malloc(png_ptr, - info_ptr->height * (sizeof (png_bytep)))); - - for (iptr=0; iptrheight; iptr++) - info_ptr->row_pointers[iptr] = NULL; - - info_ptr->free_me |= PNG_FREE_ROWS; - - for (iptr = 0; iptr < info_ptr->height; iptr++) - info_ptr->row_pointers[iptr] = png_voidcast(png_bytep, - png_malloc(png_ptr, info_ptr->rowbytes)); - } - - png_read_image(png_ptr, info_ptr->row_pointers); - info_ptr->valid |= PNG_INFO_IDAT; - - /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */ - png_read_end(png_ptr, info_ptr); - - PNG_UNUSED(params) -} -#endif /* INFO_IMAGE */ -#endif /* SEQUENTIAL_READ */ - -#ifdef PNG_SIMPLIFIED_READ_SUPPORTED -/* SIMPLIFIED READ - * - * This code currently relies on the sequential reader, though it could easily - * be made to work with the progressive one. - */ -/* Arguments to png_image_finish_read: */ - -/* Encoding of PNG data (used by the color-map code) */ -# define P_NOTSET 0 /* File encoding not yet known */ -# define P_sRGB 1 /* 8-bit encoded to sRGB gamma */ -# define P_LINEAR 2 /* 16-bit linear: not encoded, NOT pre-multiplied! */ -# define P_FILE 3 /* 8-bit encoded to file gamma, not sRGB or linear */ -# define P_LINEAR8 4 /* 8-bit linear: only from a file value */ - -/* Color-map processing: after libpng has run on the PNG image further - * processing may be needed to convert the data to color-map indices. - */ -#define PNG_CMAP_NONE 0 -#define PNG_CMAP_GA 1 /* Process GA data to a color-map with alpha */ -#define PNG_CMAP_TRANS 2 /* Process GA data to a background index */ -#define PNG_CMAP_RGB 3 /* Process RGB data */ -#define PNG_CMAP_RGB_ALPHA 4 /* Process RGBA data */ - -/* The following document where the background is for each processing case. */ -#define PNG_CMAP_NONE_BACKGROUND 256 -#define PNG_CMAP_GA_BACKGROUND 231 -#define PNG_CMAP_TRANS_BACKGROUND 254 -#define PNG_CMAP_RGB_BACKGROUND 256 -#define PNG_CMAP_RGB_ALPHA_BACKGROUND 216 - -typedef struct -{ - /* Arguments: */ - png_imagep image; - png_voidp buffer; - png_int_32 row_stride; - png_voidp colormap; - png_const_colorp background; - /* Local variables: */ - png_voidp local_row; - png_voidp first_row; - ptrdiff_t row_bytes; /* step between rows */ - int file_encoding; /* E_ values above */ - png_fixed_point gamma_to_linear; /* For P_FILE, reciprocal of gamma */ - int colormap_processing; /* PNG_CMAP_ values above */ -} png_image_read_control; - -/* Do all the *safe* initialization - 'safe' means that png_error won't be - * called, so setting up the jmp_buf is not required. This means that anything - * called from here must *not* call png_malloc - it has to call png_malloc_warn - * instead so that control is returned safely back to this routine. - */ -static int -png_image_read_init(png_imagep image) -{ - if (image->opaque == NULL) - { - png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, image, - png_safe_error, png_safe_warning); - - /* And set the rest of the structure to NULL to ensure that the various - * fields are consistent. - */ - memset(image, 0, (sizeof *image)); - image->version = PNG_IMAGE_VERSION; - - if (png_ptr != NULL) - { - png_infop info_ptr = png_create_info_struct(png_ptr); - - if (info_ptr != NULL) - { - png_controlp control = png_voidcast(png_controlp, - png_malloc_warn(png_ptr, (sizeof *control))); - - if (control != NULL) - { - memset(control, 0, (sizeof *control)); - - control->png_ptr = png_ptr; - control->info_ptr = info_ptr; - control->for_write = 0; - - image->opaque = control; - return 1; - } - - /* Error clean up */ - png_destroy_info_struct(png_ptr, &info_ptr); - } - - png_destroy_read_struct(&png_ptr, NULL, NULL); - } - - return png_image_error(image, "png_image_read: out of memory"); - } - - return png_image_error(image, "png_image_read: opaque pointer not NULL"); -} - -/* Utility to find the base format of a PNG file from a png_struct. */ -static png_uint_32 -png_image_format(png_structrp png_ptr) -{ - png_uint_32 format = 0; - - if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - format |= PNG_FORMAT_FLAG_COLOR; - - if ((png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0) - format |= PNG_FORMAT_FLAG_ALPHA; - - /* Use png_ptr here, not info_ptr, because by examination png_handle_tRNS - * sets the png_struct fields; that's all we are interested in here. The - * precise interaction with an app call to png_set_tRNS and PNG file reading - * is unclear. - */ - else if (png_ptr->num_trans > 0) - format |= PNG_FORMAT_FLAG_ALPHA; - - if (png_ptr->bit_depth == 16) - format |= PNG_FORMAT_FLAG_LINEAR; - - if ((png_ptr->color_type & PNG_COLOR_MASK_PALETTE) != 0) - format |= PNG_FORMAT_FLAG_COLORMAP; - - return format; -} - -/* Is the given gamma significantly different from sRGB? The test is the same - * one used in pngrtran.c when deciding whether to do gamma correction. The - * arithmetic optimizes the division by using the fact that the inverse of the - * file sRGB gamma is 2.2 - */ -static int -png_gamma_not_sRGB(png_fixed_point g) -{ - if (g < PNG_FP_1) - { - /* An uninitialized gamma is assumed to be sRGB for the simplified API. */ - if (g == 0) - return 0; - - return png_gamma_significant((g * 11 + 2)/5 /* i.e. *2.2, rounded */); - } - - return 1; -} - -/* Do the main body of a 'png_image_begin_read' function; read the PNG file - * header and fill in all the information. This is executed in a safe context, - * unlike the init routine above. - */ -static int -png_image_read_header(png_voidp argument) -{ - png_imagep image = png_voidcast(png_imagep, argument); - png_structrp png_ptr = image->opaque->png_ptr; - png_inforp info_ptr = image->opaque->info_ptr; - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED - png_set_benign_errors(png_ptr, 1/*warn*/); -#endif - png_read_info(png_ptr, info_ptr); - - /* Do this the fast way; just read directly out of png_struct. */ - image->width = png_ptr->width; - image->height = png_ptr->height; - - { - png_uint_32 format = png_image_format(png_ptr); - - image->format = format; - -#ifdef PNG_COLORSPACE_SUPPORTED - /* Does the colorspace match sRGB? If there is no color endpoint - * (colorant) information assume yes, otherwise require the - * 'ENDPOINTS_MATCHP_sRGB' colorspace flag to have been set. If the - * colorspace has been determined to be invalid ignore it. - */ - if ((format & PNG_FORMAT_FLAG_COLOR) != 0 && ((png_ptr->colorspace.flags - & (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB| - PNG_COLORSPACE_INVALID)) == PNG_COLORSPACE_HAVE_ENDPOINTS)) - image->flags |= PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB; -#endif - } - - /* We need the maximum number of entries regardless of the format the - * application sets here. - */ - { - png_uint_32 cmap_entries; - - switch (png_ptr->color_type) - { - case PNG_COLOR_TYPE_GRAY: - cmap_entries = 1U << png_ptr->bit_depth; - break; - - case PNG_COLOR_TYPE_PALETTE: - cmap_entries = (png_uint_32)png_ptr->num_palette; - break; - - default: - cmap_entries = 256; - break; - } - - if (cmap_entries > 256) - cmap_entries = 256; - - image->colormap_entries = cmap_entries; - } - - return 1; -} - -#ifdef PNG_STDIO_SUPPORTED -int PNGAPI -png_image_begin_read_from_stdio(png_imagep image, FILE* file) -{ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - if (file != NULL) - { - if (png_image_read_init(image) != 0) - { - /* This is slightly evil, but png_init_io doesn't do anything other - * than this and we haven't changed the standard IO functions so - * this saves a 'safe' function. - */ - image->opaque->png_ptr->io_ptr = file; - return png_safe_execute(image, png_image_read_header, image); - } - } - - else - return png_image_error(image, - "png_image_begin_read_from_stdio: invalid argument"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_begin_read_from_stdio: incorrect PNG_IMAGE_VERSION"); - - return 0; -} - -int PNGAPI -png_image_begin_read_from_file(png_imagep image, const char *file_name) -{ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - if (file_name != NULL) - { - FILE *fp = fopen(file_name, "rb"); - - if (fp != NULL) - { - if (png_image_read_init(image) != 0) - { - image->opaque->png_ptr->io_ptr = fp; - image->opaque->owned_file = 1; - return png_safe_execute(image, png_image_read_header, image); - } - - /* Clean up: just the opened file. */ - (void)fclose(fp); - } - - else - return png_image_error(image, strerror(errno)); - } - - else - return png_image_error(image, - "png_image_begin_read_from_file: invalid argument"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_begin_read_from_file: incorrect PNG_IMAGE_VERSION"); - - return 0; -} -#endif /* STDIO */ - -static void PNGCBAPI -png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need) -{ - if (png_ptr != NULL) - { - png_imagep image = png_voidcast(png_imagep, png_ptr->io_ptr); - if (image != NULL) - { - png_controlp cp = image->opaque; - if (cp != NULL) - { - png_const_bytep memory = cp->memory; - png_size_t size = cp->size; - - if (memory != NULL && size >= need) - { - memcpy(out, memory, need); - cp->memory = memory + need; - cp->size = size - need; - return; - } - - png_error(png_ptr, "read beyond end of data"); - } - } - - png_error(png_ptr, "invalid memory read"); - } -} - -int PNGAPI png_image_begin_read_from_memory(png_imagep image, - png_const_voidp memory, png_size_t size) -{ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - if (memory != NULL && size > 0) - { - if (png_image_read_init(image) != 0) - { - /* Now set the IO functions to read from the memory buffer and - * store it into io_ptr. Again do this in-place to avoid calling a - * libpng function that requires error handling. - */ - image->opaque->memory = png_voidcast(png_const_bytep, memory); - image->opaque->size = size; - image->opaque->png_ptr->io_ptr = image; - image->opaque->png_ptr->read_data_fn = png_image_memory_read; - - return png_safe_execute(image, png_image_read_header, image); - } - } - - else - return png_image_error(image, - "png_image_begin_read_from_memory: invalid argument"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_begin_read_from_memory: incorrect PNG_IMAGE_VERSION"); - - return 0; -} - -/* Utility function to skip chunks that are not used by the simplified image - * read functions and an appropriate macro to call it. - */ -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -static void -png_image_skip_unused_chunks(png_structrp png_ptr) -{ - /* Prepare the reader to ignore all recognized chunks whose data will not - * be used, i.e., all chunks recognized by libpng except for those - * involved in basic image reading: - * - * IHDR, PLTE, IDAT, IEND - * - * Or image data handling: - * - * tRNS, bKGD, gAMA, cHRM, sRGB, [iCCP] and sBIT. - * - * This provides a small performance improvement and eliminates any - * potential vulnerability to security problems in the unused chunks. - * - * At present the iCCP chunk data isn't used, so iCCP chunk can be ignored - * too. This allows the simplified API to be compiled without iCCP support, - * however if the support is there the chunk is still checked to detect - * errors (which are unfortunately quite common.) - */ - { - static PNG_CONST png_byte chunks_to_process[] = { - 98, 75, 71, 68, '\0', /* bKGD */ - 99, 72, 82, 77, '\0', /* cHRM */ - 103, 65, 77, 65, '\0', /* gAMA */ -# ifdef PNG_READ_iCCP_SUPPORTED - 105, 67, 67, 80, '\0', /* iCCP */ -# endif - 115, 66, 73, 84, '\0', /* sBIT */ - 115, 82, 71, 66, '\0', /* sRGB */ - }; - - /* Ignore unknown chunks and all other chunks except for the - * IHDR, PLTE, tRNS, IDAT, and IEND chunks. - */ - png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_NEVER, - NULL, -1); - - /* But do not ignore image data handling chunks */ - png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_AS_DEFAULT, - chunks_to_process, (int)/*SAFE*/(sizeof chunks_to_process)/5); - } -} - -# define PNG_SKIP_CHUNKS(p) png_image_skip_unused_chunks(p) -#else -# define PNG_SKIP_CHUNKS(p) ((void)0) -#endif /* HANDLE_AS_UNKNOWN */ - -/* The following macro gives the exact rounded answer for all values in the - * range 0..255 (it actually divides by 51.2, but the rounding still generates - * the correct numbers 0..5 - */ -#define PNG_DIV51(v8) (((v8) * 5 + 130) >> 8) - -/* Utility functions to make particular color-maps */ -static void -set_file_encoding(png_image_read_control *display) -{ - png_fixed_point g = display->image->opaque->png_ptr->colorspace.gamma; - if (png_gamma_significant(g) != 0) - { - if (png_gamma_not_sRGB(g) != 0) - { - display->file_encoding = P_FILE; - display->gamma_to_linear = png_reciprocal(g); - } - - else - display->file_encoding = P_sRGB; - } - - else - display->file_encoding = P_LINEAR8; -} - -static unsigned int -decode_gamma(png_image_read_control *display, png_uint_32 value, int encoding) -{ - if (encoding == P_FILE) /* double check */ - encoding = display->file_encoding; - - if (encoding == P_NOTSET) /* must be the file encoding */ - { - set_file_encoding(display); - encoding = display->file_encoding; - } - - switch (encoding) - { - case P_FILE: - value = png_gamma_16bit_correct(value*257, display->gamma_to_linear); - break; - - case P_sRGB: - value = png_sRGB_table[value]; - break; - - case P_LINEAR: - break; - - case P_LINEAR8: - value *= 257; - break; - -#ifdef __GNUC__ - default: - png_error(display->image->opaque->png_ptr, - "unexpected encoding (internal error)"); -#endif - } - - return value; -} - -static png_uint_32 -png_colormap_compose(png_image_read_control *display, - png_uint_32 foreground, int foreground_encoding, png_uint_32 alpha, - png_uint_32 background, int encoding) -{ - /* The file value is composed on the background, the background has the given - * encoding and so does the result, the file is encoded with P_FILE and the - * file and alpha are 8-bit values. The (output) encoding will always be - * P_LINEAR or P_sRGB. - */ - png_uint_32 f = decode_gamma(display, foreground, foreground_encoding); - png_uint_32 b = decode_gamma(display, background, encoding); - - /* The alpha is always an 8-bit value (it comes from the palette), the value - * scaled by 255 is what PNG_sRGB_FROM_LINEAR requires. - */ - f = f * alpha + b * (255-alpha); - - if (encoding == P_LINEAR) - { - /* Scale to 65535; divide by 255, approximately (in fact this is extremely - * accurate, it divides by 255.00000005937181414556, with no overflow.) - */ - f *= 257; /* Now scaled by 65535 */ - f += f >> 16; - f = (f+32768) >> 16; - } - - else /* P_sRGB */ - f = PNG_sRGB_FROM_LINEAR(f); - - return f; -} - -/* NOTE: P_LINEAR values to this routine must be 16-bit, but P_FILE values must - * be 8-bit. - */ -static void -png_create_colormap_entry(png_image_read_control *display, - png_uint_32 ip, png_uint_32 red, png_uint_32 green, png_uint_32 blue, - png_uint_32 alpha, int encoding) -{ - png_imagep image = display->image; - const int output_encoding = (image->format & PNG_FORMAT_FLAG_LINEAR) != 0 ? - P_LINEAR : P_sRGB; - const int convert_to_Y = (image->format & PNG_FORMAT_FLAG_COLOR) == 0 && - (red != green || green != blue); - - if (ip > 255) - png_error(image->opaque->png_ptr, "color-map index out of range"); - - /* Update the cache with whether the file gamma is significantly different - * from sRGB. - */ - if (encoding == P_FILE) - { - if (display->file_encoding == P_NOTSET) - set_file_encoding(display); - - /* Note that the cached value may be P_FILE too, but if it is then the - * gamma_to_linear member has been set. - */ - encoding = display->file_encoding; - } - - if (encoding == P_FILE) - { - png_fixed_point g = display->gamma_to_linear; - - red = png_gamma_16bit_correct(red*257, g); - green = png_gamma_16bit_correct(green*257, g); - blue = png_gamma_16bit_correct(blue*257, g); - - if (convert_to_Y != 0 || output_encoding == P_LINEAR) - { - alpha *= 257; - encoding = P_LINEAR; - } - - else - { - red = PNG_sRGB_FROM_LINEAR(red * 255); - green = PNG_sRGB_FROM_LINEAR(green * 255); - blue = PNG_sRGB_FROM_LINEAR(blue * 255); - encoding = P_sRGB; - } - } - - else if (encoding == P_LINEAR8) - { - /* This encoding occurs quite frequently in test cases because PngSuite - * includes a gAMA 1.0 chunk with most images. - */ - red *= 257; - green *= 257; - blue *= 257; - alpha *= 257; - encoding = P_LINEAR; - } - - else if (encoding == P_sRGB && - (convert_to_Y != 0 || output_encoding == P_LINEAR)) - { - /* The values are 8-bit sRGB values, but must be converted to 16-bit - * linear. - */ - red = png_sRGB_table[red]; - green = png_sRGB_table[green]; - blue = png_sRGB_table[blue]; - alpha *= 257; - encoding = P_LINEAR; - } - - /* This is set if the color isn't gray but the output is. */ - if (encoding == P_LINEAR) - { - if (convert_to_Y != 0) - { - /* NOTE: these values are copied from png_do_rgb_to_gray */ - png_uint_32 y = (png_uint_32)6968 * red + (png_uint_32)23434 * green + - (png_uint_32)2366 * blue; - - if (output_encoding == P_LINEAR) - y = (y + 16384) >> 15; - - else - { - /* y is scaled by 32768, we need it scaled by 255: */ - y = (y + 128) >> 8; - y *= 255; - y = PNG_sRGB_FROM_LINEAR((y + 64) >> 7); - alpha = PNG_DIV257(alpha); - encoding = P_sRGB; - } - - blue = red = green = y; - } - - else if (output_encoding == P_sRGB) - { - red = PNG_sRGB_FROM_LINEAR(red * 255); - green = PNG_sRGB_FROM_LINEAR(green * 255); - blue = PNG_sRGB_FROM_LINEAR(blue * 255); - alpha = PNG_DIV257(alpha); - encoding = P_sRGB; - } - } - - if (encoding != output_encoding) - png_error(image->opaque->png_ptr, "bad encoding (internal error)"); - - /* Store the value. */ - { -# ifdef PNG_FORMAT_AFIRST_SUPPORTED - const int afirst = (image->format & PNG_FORMAT_FLAG_AFIRST) != 0 && - (image->format & PNG_FORMAT_FLAG_ALPHA) != 0; -# else -# define afirst 0 -# endif -# ifdef PNG_FORMAT_BGR_SUPPORTED - const int bgr = (image->format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0; -# else -# define bgr 0 -# endif - - if (output_encoding == P_LINEAR) - { - png_uint_16p entry = png_voidcast(png_uint_16p, display->colormap); - - entry += ip * PNG_IMAGE_SAMPLE_CHANNELS(image->format); - - /* The linear 16-bit values must be pre-multiplied by the alpha channel - * value, if less than 65535 (this is, effectively, composite on black - * if the alpha channel is removed.) - */ - switch (PNG_IMAGE_SAMPLE_CHANNELS(image->format)) - { - case 4: - entry[afirst ? 0 : 3] = (png_uint_16)alpha; - /* FALLTHROUGH */ - - case 3: - if (alpha < 65535) - { - if (alpha > 0) - { - blue = (blue * alpha + 32767U)/65535U; - green = (green * alpha + 32767U)/65535U; - red = (red * alpha + 32767U)/65535U; - } - - else - red = green = blue = 0; - } - entry[afirst + (2 ^ bgr)] = (png_uint_16)blue; - entry[afirst + 1] = (png_uint_16)green; - entry[afirst + bgr] = (png_uint_16)red; - break; - - case 2: - entry[1 ^ afirst] = (png_uint_16)alpha; - /* FALLTHROUGH */ - - case 1: - if (alpha < 65535) - { - if (alpha > 0) - green = (green * alpha + 32767U)/65535U; - - else - green = 0; - } - entry[afirst] = (png_uint_16)green; - break; - - default: - break; - } - } - - else /* output encoding is P_sRGB */ - { - png_bytep entry = png_voidcast(png_bytep, display->colormap); - - entry += ip * PNG_IMAGE_SAMPLE_CHANNELS(image->format); - - switch (PNG_IMAGE_SAMPLE_CHANNELS(image->format)) - { - case 4: - entry[afirst ? 0 : 3] = (png_byte)alpha; - /* FALLTHROUGH */ - case 3: - entry[afirst + (2 ^ bgr)] = (png_byte)blue; - entry[afirst + 1] = (png_byte)green; - entry[afirst + bgr] = (png_byte)red; - break; - - case 2: - entry[1 ^ afirst] = (png_byte)alpha; - /* FALLTHROUGH */ - case 1: - entry[afirst] = (png_byte)green; - break; - - default: - break; - } - } - -# ifdef afirst -# undef afirst -# endif -# ifdef bgr -# undef bgr -# endif - } -} - -static int -make_gray_file_colormap(png_image_read_control *display) -{ - unsigned int i; - - for (i=0; i<256; ++i) - png_create_colormap_entry(display, i, i, i, i, 255, P_FILE); - - return (int)i; -} - -static int -make_gray_colormap(png_image_read_control *display) -{ - unsigned int i; - - for (i=0; i<256; ++i) - png_create_colormap_entry(display, i, i, i, i, 255, P_sRGB); - - return (int)i; -} -#define PNG_GRAY_COLORMAP_ENTRIES 256 - -static int -make_ga_colormap(png_image_read_control *display) -{ - unsigned int i, a; - - /* Alpha is retained, the output will be a color-map with entries - * selected by six levels of alpha. One transparent entry, 6 gray - * levels for all the intermediate alpha values, leaving 230 entries - * for the opaque grays. The color-map entries are the six values - * [0..5]*51, the GA processing uses PNG_DIV51(value) to find the - * relevant entry. - * - * if (alpha > 229) // opaque - * { - * // The 231 entries are selected to make the math below work: - * base = 0; - * entry = (231 * gray + 128) >> 8; - * } - * else if (alpha < 26) // transparent - * { - * base = 231; - * entry = 0; - * } - * else // partially opaque - * { - * base = 226 + 6 * PNG_DIV51(alpha); - * entry = PNG_DIV51(gray); - * } - */ - i = 0; - while (i < 231) - { - unsigned int gray = (i * 256 + 115) / 231; - png_create_colormap_entry(display, i++, gray, gray, gray, 255, P_sRGB); - } - - /* 255 is used here for the component values for consistency with the code - * that undoes premultiplication in pngwrite.c. - */ - png_create_colormap_entry(display, i++, 255, 255, 255, 0, P_sRGB); - - for (a=1; a<5; ++a) - { - unsigned int g; - - for (g=0; g<6; ++g) - png_create_colormap_entry(display, i++, g*51, g*51, g*51, a*51, - P_sRGB); - } - - return (int)i; -} - -#define PNG_GA_COLORMAP_ENTRIES 256 - -static int -make_rgb_colormap(png_image_read_control *display) -{ - unsigned int i, r; - - /* Build a 6x6x6 opaque RGB cube */ - for (i=r=0; r<6; ++r) - { - unsigned int g; - - for (g=0; g<6; ++g) - { - unsigned int b; - - for (b=0; b<6; ++b) - png_create_colormap_entry(display, i++, r*51, g*51, b*51, 255, - P_sRGB); - } - } - - return (int)i; -} - -#define PNG_RGB_COLORMAP_ENTRIES 216 - -/* Return a palette index to the above palette given three 8-bit sRGB values. */ -#define PNG_RGB_INDEX(r,g,b) \ - ((png_byte)(6 * (6 * PNG_DIV51(r) + PNG_DIV51(g)) + PNG_DIV51(b))) - -static int -png_image_read_colormap(png_voidp argument) -{ - png_image_read_control *display = - png_voidcast(png_image_read_control*, argument); - const png_imagep image = display->image; - - const png_structrp png_ptr = image->opaque->png_ptr; - const png_uint_32 output_format = image->format; - const int output_encoding = (output_format & PNG_FORMAT_FLAG_LINEAR) != 0 ? - P_LINEAR : P_sRGB; - - unsigned int cmap_entries; - unsigned int output_processing; /* Output processing option */ - unsigned int data_encoding = P_NOTSET; /* Encoding libpng must produce */ - - /* Background information; the background color and the index of this color - * in the color-map if it exists (else 256). - */ - unsigned int background_index = 256; - png_uint_32 back_r, back_g, back_b; - - /* Flags to accumulate things that need to be done to the input. */ - int expand_tRNS = 0; - - /* Exclude the NYI feature of compositing onto a color-mapped buffer; it is - * very difficult to do, the results look awful, and it is difficult to see - * what possible use it is because the application can't control the - * color-map. - */ - if (((png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0 || - png_ptr->num_trans > 0) /* alpha in input */ && - ((output_format & PNG_FORMAT_FLAG_ALPHA) == 0) /* no alpha in output */) - { - if (output_encoding == P_LINEAR) /* compose on black */ - back_b = back_g = back_r = 0; - - else if (display->background == NULL /* no way to remove it */) - png_error(png_ptr, - "background color must be supplied to remove alpha/transparency"); - - /* Get a copy of the background color (this avoids repeating the checks - * below.) The encoding is 8-bit sRGB or 16-bit linear, depending on the - * output format. - */ - else - { - back_g = display->background->green; - if ((output_format & PNG_FORMAT_FLAG_COLOR) != 0) - { - back_r = display->background->red; - back_b = display->background->blue; - } - else - back_b = back_r = back_g; - } - } - - else if (output_encoding == P_LINEAR) - back_b = back_r = back_g = 65535; - - else - back_b = back_r = back_g = 255; - - /* Default the input file gamma if required - this is necessary because - * libpng assumes that if no gamma information is present the data is in the - * output format, but the simplified API deduces the gamma from the input - * format. - */ - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) == 0) - { - /* Do this directly, not using the png_colorspace functions, to ensure - * that it happens even if the colorspace is invalid (though probably if - * it is the setting will be ignored) Note that the same thing can be - * achieved at the application interface with png_set_gAMA. - */ - if (png_ptr->bit_depth == 16 && - (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0) - png_ptr->colorspace.gamma = PNG_GAMMA_LINEAR; - - else - png_ptr->colorspace.gamma = PNG_GAMMA_sRGB_INVERSE; - - png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; - } - - /* Decide what to do based on the PNG color type of the input data. The - * utility function png_create_colormap_entry deals with most aspects of the - * output transformations; this code works out how to produce bytes of - * color-map entries from the original format. - */ - switch (png_ptr->color_type) - { - case PNG_COLOR_TYPE_GRAY: - if (png_ptr->bit_depth <= 8) - { - /* There at most 256 colors in the output, regardless of - * transparency. - */ - unsigned int step, i, val, trans = 256/*ignore*/, back_alpha = 0; - - cmap_entries = 1U << png_ptr->bit_depth; - if (cmap_entries > image->colormap_entries) - png_error(png_ptr, "gray[8] color-map: too few entries"); - - step = 255 / (cmap_entries - 1); - output_processing = PNG_CMAP_NONE; - - /* If there is a tRNS chunk then this either selects a transparent - * value or, if the output has no alpha, the background color. - */ - if (png_ptr->num_trans > 0) - { - trans = png_ptr->trans_color.gray; - - if ((output_format & PNG_FORMAT_FLAG_ALPHA) == 0) - back_alpha = output_encoding == P_LINEAR ? 65535 : 255; - } - - /* png_create_colormap_entry just takes an RGBA and writes the - * corresponding color-map entry using the format from 'image', - * including the required conversion to sRGB or linear as - * appropriate. The input values are always either sRGB (if the - * gamma correction flag is 0) or 0..255 scaled file encoded values - * (if the function must gamma correct them). - */ - for (i=val=0; ibit_depth < 8) - png_set_packing(png_ptr); - } - - else /* bit depth is 16 */ - { - /* The 16-bit input values can be converted directly to 8-bit gamma - * encoded values; however, if a tRNS chunk is present 257 color-map - * entries are required. This means that the extra entry requires - * special processing; add an alpha channel, sacrifice gray level - * 254 and convert transparent (alpha==0) entries to that. - * - * Use libpng to chop the data to 8 bits. Convert it to sRGB at the - * same time to minimize quality loss. If a tRNS chunk is present - * this means libpng must handle it too; otherwise it is impossible - * to do the exact match on the 16-bit value. - * - * If the output has no alpha channel *and* the background color is - * gray then it is possible to let libpng handle the substitution by - * ensuring that the corresponding gray level matches the background - * color exactly. - */ - data_encoding = P_sRGB; - - if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "gray[16] color-map: too few entries"); - - cmap_entries = (unsigned int)make_gray_colormap(display); - - if (png_ptr->num_trans > 0) - { - unsigned int back_alpha; - - if ((output_format & PNG_FORMAT_FLAG_ALPHA) != 0) - back_alpha = 0; - - else - { - if (back_r == back_g && back_g == back_b) - { - /* Background is gray; no special processing will be - * required. - */ - png_color_16 c; - png_uint_32 gray = back_g; - - if (output_encoding == P_LINEAR) - { - gray = PNG_sRGB_FROM_LINEAR(gray * 255); - - /* And make sure the corresponding palette entry - * matches. - */ - png_create_colormap_entry(display, gray, back_g, back_g, - back_g, 65535, P_LINEAR); - } - - /* The background passed to libpng, however, must be the - * sRGB value. - */ - c.index = 0; /*unused*/ - c.gray = c.red = c.green = c.blue = (png_uint_16)gray; - - /* NOTE: does this work without expanding tRNS to alpha? - * It should be the color->gray case below apparently - * doesn't. - */ - png_set_background_fixed(png_ptr, &c, - PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/, - 0/*gamma: not used*/); - - output_processing = PNG_CMAP_NONE; - break; - } -#ifdef __COVERITY__ - /* Coverity claims that output_encoding cannot be 2 (P_LINEAR) - * here. - */ - back_alpha = 255; -#else - back_alpha = output_encoding == P_LINEAR ? 65535 : 255; -#endif - } - - /* output_processing means that the libpng-processed row will be - * 8-bit GA and it has to be processing to single byte color-map - * values. Entry 254 is replaced by either a completely - * transparent entry or by the background color at full - * precision (and the background color is not a simple gray - * level in this case.) - */ - expand_tRNS = 1; - output_processing = PNG_CMAP_TRANS; - background_index = 254; - - /* And set (overwrite) color-map entry 254 to the actual - * background color at full precision. - */ - png_create_colormap_entry(display, 254, back_r, back_g, back_b, - back_alpha, output_encoding); - } - - else - output_processing = PNG_CMAP_NONE; - } - break; - - case PNG_COLOR_TYPE_GRAY_ALPHA: - /* 8-bit or 16-bit PNG with two channels - gray and alpha. A minimum - * of 65536 combinations. If, however, the alpha channel is to be - * removed there are only 256 possibilities if the background is gray. - * (Otherwise there is a subset of the 65536 possibilities defined by - * the triangle between black, white and the background color.) - * - * Reduce 16-bit files to 8-bit and sRGB encode the result. No need to - * worry about tRNS matching - tRNS is ignored if there is an alpha - * channel. - */ - data_encoding = P_sRGB; - - if ((output_format & PNG_FORMAT_FLAG_ALPHA) != 0) - { - if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "gray+alpha color-map: too few entries"); - - cmap_entries = (unsigned int)make_ga_colormap(display); - - background_index = PNG_CMAP_GA_BACKGROUND; - output_processing = PNG_CMAP_GA; - } - - else /* alpha is removed */ - { - /* Alpha must be removed as the PNG data is processed when the - * background is a color because the G and A channels are - * independent and the vector addition (non-parallel vectors) is a - * 2-D problem. - * - * This can be reduced to the same algorithm as above by making a - * colormap containing gray levels (for the opaque grays), a - * background entry (for a transparent pixel) and a set of four six - * level color values, one set for each intermediate alpha value. - * See the comments in make_ga_colormap for how this works in the - * per-pixel processing. - * - * If the background is gray, however, we only need a 256 entry gray - * level color map. It is sufficient to make the entry generated - * for the background color be exactly the color specified. - */ - if ((output_format & PNG_FORMAT_FLAG_COLOR) == 0 || - (back_r == back_g && back_g == back_b)) - { - /* Background is gray; no special processing will be required. */ - png_color_16 c; - png_uint_32 gray = back_g; - - if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "gray-alpha color-map: too few entries"); - - cmap_entries = (unsigned int)make_gray_colormap(display); - - if (output_encoding == P_LINEAR) - { - gray = PNG_sRGB_FROM_LINEAR(gray * 255); - - /* And make sure the corresponding palette entry matches. */ - png_create_colormap_entry(display, gray, back_g, back_g, - back_g, 65535, P_LINEAR); - } - - /* The background passed to libpng, however, must be the sRGB - * value. - */ - c.index = 0; /*unused*/ - c.gray = c.red = c.green = c.blue = (png_uint_16)gray; - - png_set_background_fixed(png_ptr, &c, - PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/, - 0/*gamma: not used*/); - - output_processing = PNG_CMAP_NONE; - } - - else - { - png_uint_32 i, a; - - /* This is the same as png_make_ga_colormap, above, except that - * the entries are all opaque. - */ - if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "ga-alpha color-map: too few entries"); - - i = 0; - while (i < 231) - { - png_uint_32 gray = (i * 256 + 115) / 231; - png_create_colormap_entry(display, i++, gray, gray, gray, - 255, P_sRGB); - } - - /* NOTE: this preserves the full precision of the application - * background color. - */ - background_index = i; - png_create_colormap_entry(display, i++, back_r, back_g, back_b, -#ifdef __COVERITY__ - /* Coverity claims that output_encoding - * cannot be 2 (P_LINEAR) here. - */ 255U, -#else - output_encoding == P_LINEAR ? 65535U : 255U, -#endif - output_encoding); - - /* For non-opaque input composite on the sRGB background - this - * requires inverting the encoding for each component. The input - * is still converted to the sRGB encoding because this is a - * reasonable approximate to the logarithmic curve of human - * visual sensitivity, at least over the narrow range which PNG - * represents. Consequently 'G' is always sRGB encoded, while - * 'A' is linear. We need the linear background colors. - */ - if (output_encoding == P_sRGB) /* else already linear */ - { - /* This may produce a value not exactly matching the - * background, but that's ok because these numbers are only - * used when alpha != 0 - */ - back_r = png_sRGB_table[back_r]; - back_g = png_sRGB_table[back_g]; - back_b = png_sRGB_table[back_b]; - } - - for (a=1; a<5; ++a) - { - unsigned int g; - - /* PNG_sRGB_FROM_LINEAR expects a 16-bit linear value scaled - * by an 8-bit alpha value (0..255). - */ - png_uint_32 alpha = 51 * a; - png_uint_32 back_rx = (255-alpha) * back_r; - png_uint_32 back_gx = (255-alpha) * back_g; - png_uint_32 back_bx = (255-alpha) * back_b; - - for (g=0; g<6; ++g) - { - png_uint_32 gray = png_sRGB_table[g*51] * alpha; - - png_create_colormap_entry(display, i++, - PNG_sRGB_FROM_LINEAR(gray + back_rx), - PNG_sRGB_FROM_LINEAR(gray + back_gx), - PNG_sRGB_FROM_LINEAR(gray + back_bx), 255, P_sRGB); - } - } - - cmap_entries = i; - output_processing = PNG_CMAP_GA; - } - } - break; - - case PNG_COLOR_TYPE_RGB: - case PNG_COLOR_TYPE_RGB_ALPHA: - /* Exclude the case where the output is gray; we can always handle this - * with the cases above. - */ - if ((output_format & PNG_FORMAT_FLAG_COLOR) == 0) - { - /* The color-map will be grayscale, so we may as well convert the - * input RGB values to a simple grayscale and use the grayscale - * code above. - * - * NOTE: calling this apparently damages the recognition of the - * transparent color in background color handling; call - * png_set_tRNS_to_alpha before png_set_background_fixed. - */ - png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE, -1, - -1); - data_encoding = P_sRGB; - - /* The output will now be one or two 8-bit gray or gray+alpha - * channels. The more complex case arises when the input has alpha. - */ - if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA || - png_ptr->num_trans > 0) && - (output_format & PNG_FORMAT_FLAG_ALPHA) != 0) - { - /* Both input and output have an alpha channel, so no background - * processing is required; just map the GA bytes to the right - * color-map entry. - */ - expand_tRNS = 1; - - if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "rgb[ga] color-map: too few entries"); - - cmap_entries = (unsigned int)make_ga_colormap(display); - background_index = PNG_CMAP_GA_BACKGROUND; - output_processing = PNG_CMAP_GA; - } - - else - { - /* Either the input or the output has no alpha channel, so there - * will be no non-opaque pixels in the color-map; it will just be - * grayscale. - */ - if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "rgb[gray] color-map: too few entries"); - - /* Ideally this code would use libpng to do the gamma correction, - * but if an input alpha channel is to be removed we will hit the - * libpng bug in gamma+compose+rgb-to-gray (the double gamma - * correction bug). Fix this by dropping the gamma correction in - * this case and doing it in the palette; this will result in - * duplicate palette entries, but that's better than the - * alternative of double gamma correction. - */ - if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA || - png_ptr->num_trans > 0) && - png_gamma_not_sRGB(png_ptr->colorspace.gamma) != 0) - { - cmap_entries = (unsigned int)make_gray_file_colormap(display); - data_encoding = P_FILE; - } - - else - cmap_entries = (unsigned int)make_gray_colormap(display); - - /* But if the input has alpha or transparency it must be removed - */ - if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA || - png_ptr->num_trans > 0) - { - png_color_16 c; - png_uint_32 gray = back_g; - - /* We need to ensure that the application background exists in - * the colormap and that completely transparent pixels map to - * it. Achieve this simply by ensuring that the entry - * selected for the background really is the background color. - */ - if (data_encoding == P_FILE) /* from the fixup above */ - { - /* The app supplied a gray which is in output_encoding, we - * need to convert it to a value of the input (P_FILE) - * encoding then set this palette entry to the required - * output encoding. - */ - if (output_encoding == P_sRGB) - gray = png_sRGB_table[gray]; /* now P_LINEAR */ - - gray = PNG_DIV257(png_gamma_16bit_correct(gray, - png_ptr->colorspace.gamma)); /* now P_FILE */ - - /* And make sure the corresponding palette entry contains - * exactly the required sRGB value. - */ - png_create_colormap_entry(display, gray, back_g, back_g, - back_g, 0/*unused*/, output_encoding); - } - - else if (output_encoding == P_LINEAR) - { - gray = PNG_sRGB_FROM_LINEAR(gray * 255); - - /* And make sure the corresponding palette entry matches. - */ - png_create_colormap_entry(display, gray, back_g, back_g, - back_g, 0/*unused*/, P_LINEAR); - } - - /* The background passed to libpng, however, must be the - * output (normally sRGB) value. - */ - c.index = 0; /*unused*/ - c.gray = c.red = c.green = c.blue = (png_uint_16)gray; - - /* NOTE: the following is apparently a bug in libpng. Without - * it the transparent color recognition in - * png_set_background_fixed seems to go wrong. - */ - expand_tRNS = 1; - png_set_background_fixed(png_ptr, &c, - PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/, - 0/*gamma: not used*/); - } - - output_processing = PNG_CMAP_NONE; - } - } - - else /* output is color */ - { - /* We could use png_quantize here so long as there is no transparent - * color or alpha; png_quantize ignores alpha. Easier overall just - * to do it once and using PNG_DIV51 on the 6x6x6 reduced RGB cube. - * Consequently we always want libpng to produce sRGB data. - */ - data_encoding = P_sRGB; - - /* Is there any transparency or alpha? */ - if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA || - png_ptr->num_trans > 0) - { - /* Is there alpha in the output too? If so all four channels are - * processed into a special RGB cube with alpha support. - */ - if ((output_format & PNG_FORMAT_FLAG_ALPHA) != 0) - { - png_uint_32 r; - - if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries) - png_error(png_ptr, "rgb+alpha color-map: too few entries"); - - cmap_entries = (unsigned int)make_rgb_colormap(display); - - /* Add a transparent entry. */ - png_create_colormap_entry(display, cmap_entries, 255, 255, - 255, 0, P_sRGB); - - /* This is stored as the background index for the processing - * algorithm. - */ - background_index = cmap_entries++; - - /* Add 27 r,g,b entries each with alpha 0.5. */ - for (r=0; r<256; r = (r << 1) | 0x7f) - { - png_uint_32 g; - - for (g=0; g<256; g = (g << 1) | 0x7f) - { - png_uint_32 b; - - /* This generates components with the values 0, 127 and - * 255 - */ - for (b=0; b<256; b = (b << 1) | 0x7f) - png_create_colormap_entry(display, cmap_entries++, - r, g, b, 128, P_sRGB); - } - } - - expand_tRNS = 1; - output_processing = PNG_CMAP_RGB_ALPHA; - } - - else - { - /* Alpha/transparency must be removed. The background must - * exist in the color map (achieved by setting adding it after - * the 666 color-map). If the standard processing code will - * pick up this entry automatically that's all that is - * required; libpng can be called to do the background - * processing. - */ - unsigned int sample_size = - PNG_IMAGE_SAMPLE_SIZE(output_format); - png_uint_32 r, g, b; /* sRGB background */ - - if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries) - png_error(png_ptr, "rgb-alpha color-map: too few entries"); - - cmap_entries = (unsigned int)make_rgb_colormap(display); - - png_create_colormap_entry(display, cmap_entries, back_r, - back_g, back_b, 0/*unused*/, output_encoding); - - if (output_encoding == P_LINEAR) - { - r = PNG_sRGB_FROM_LINEAR(back_r * 255); - g = PNG_sRGB_FROM_LINEAR(back_g * 255); - b = PNG_sRGB_FROM_LINEAR(back_b * 255); - } - - else - { - r = back_r; - g = back_g; - b = back_g; - } - - /* Compare the newly-created color-map entry with the one the - * PNG_CMAP_RGB algorithm will use. If the two entries don't - * match, add the new one and set this as the background - * index. - */ - if (memcmp((png_const_bytep)display->colormap + - sample_size * cmap_entries, - (png_const_bytep)display->colormap + - sample_size * PNG_RGB_INDEX(r,g,b), - sample_size) != 0) - { - /* The background color must be added. */ - background_index = cmap_entries++; - - /* Add 27 r,g,b entries each with created by composing with - * the background at alpha 0.5. - */ - for (r=0; r<256; r = (r << 1) | 0x7f) - { - for (g=0; g<256; g = (g << 1) | 0x7f) - { - /* This generates components with the values 0, 127 - * and 255 - */ - for (b=0; b<256; b = (b << 1) | 0x7f) - png_create_colormap_entry(display, cmap_entries++, - png_colormap_compose(display, r, P_sRGB, 128, - back_r, output_encoding), - png_colormap_compose(display, g, P_sRGB, 128, - back_g, output_encoding), - png_colormap_compose(display, b, P_sRGB, 128, - back_b, output_encoding), - 0/*unused*/, output_encoding); - } - } - - expand_tRNS = 1; - output_processing = PNG_CMAP_RGB_ALPHA; - } - - else /* background color is in the standard color-map */ - { - png_color_16 c; - - c.index = 0; /*unused*/ - c.red = (png_uint_16)back_r; - c.gray = c.green = (png_uint_16)back_g; - c.blue = (png_uint_16)back_b; - - png_set_background_fixed(png_ptr, &c, - PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/, - 0/*gamma: not used*/); - - output_processing = PNG_CMAP_RGB; - } - } - } - - else /* no alpha or transparency in the input */ - { - /* Alpha in the output is irrelevant, simply map the opaque input - * pixels to the 6x6x6 color-map. - */ - if (PNG_RGB_COLORMAP_ENTRIES > image->colormap_entries) - png_error(png_ptr, "rgb color-map: too few entries"); - - cmap_entries = (unsigned int)make_rgb_colormap(display); - output_processing = PNG_CMAP_RGB; - } - } - break; - - case PNG_COLOR_TYPE_PALETTE: - /* It's already got a color-map. It may be necessary to eliminate the - * tRNS entries though. - */ - { - unsigned int num_trans = png_ptr->num_trans; - png_const_bytep trans = num_trans > 0 ? png_ptr->trans_alpha : NULL; - png_const_colorp colormap = png_ptr->palette; - const int do_background = trans != NULL && - (output_format & PNG_FORMAT_FLAG_ALPHA) == 0; - unsigned int i; - - /* Just in case: */ - if (trans == NULL) - num_trans = 0; - - output_processing = PNG_CMAP_NONE; - data_encoding = P_FILE; /* Don't change from color-map indices */ - cmap_entries = (unsigned int)png_ptr->num_palette; - if (cmap_entries > 256) - cmap_entries = 256; - - if (cmap_entries > (unsigned int)image->colormap_entries) - png_error(png_ptr, "palette color-map: too few entries"); - - for (i=0; i < cmap_entries; ++i) - { - if (do_background != 0 && i < num_trans && trans[i] < 255) - { - if (trans[i] == 0) - png_create_colormap_entry(display, i, back_r, back_g, - back_b, 0, output_encoding); - - else - { - /* Must compose the PNG file color in the color-map entry - * on the sRGB color in 'back'. - */ - png_create_colormap_entry(display, i, - png_colormap_compose(display, colormap[i].red, - P_FILE, trans[i], back_r, output_encoding), - png_colormap_compose(display, colormap[i].green, - P_FILE, trans[i], back_g, output_encoding), - png_colormap_compose(display, colormap[i].blue, - P_FILE, trans[i], back_b, output_encoding), - output_encoding == P_LINEAR ? trans[i] * 257U : - trans[i], - output_encoding); - } - } - - else - png_create_colormap_entry(display, i, colormap[i].red, - colormap[i].green, colormap[i].blue, - i < num_trans ? trans[i] : 255U, P_FILE/*8-bit*/); - } - - /* The PNG data may have indices packed in fewer than 8 bits, it - * must be expanded if so. - */ - if (png_ptr->bit_depth < 8) - png_set_packing(png_ptr); - } - break; - - default: - png_error(png_ptr, "invalid PNG color type"); - /*NOT REACHED*/ - } - - /* Now deal with the output processing */ - if (expand_tRNS != 0 && png_ptr->num_trans > 0 && - (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) == 0) - png_set_tRNS_to_alpha(png_ptr); - - switch (data_encoding) - { - case P_sRGB: - /* Change to 8-bit sRGB */ - png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, PNG_GAMMA_sRGB); - /* FALLTHROUGH */ - - case P_FILE: - if (png_ptr->bit_depth > 8) - png_set_scale_16(png_ptr); - break; - -#ifdef __GNUC__ - default: - png_error(png_ptr, "bad data option (internal error)"); -#endif - } - - if (cmap_entries > 256 || cmap_entries > image->colormap_entries) - png_error(png_ptr, "color map overflow (BAD internal error)"); - - image->colormap_entries = cmap_entries; - - /* Double check using the recorded background index */ - switch (output_processing) - { - case PNG_CMAP_NONE: - if (background_index != PNG_CMAP_NONE_BACKGROUND) - goto bad_background; - break; - - case PNG_CMAP_GA: - if (background_index != PNG_CMAP_GA_BACKGROUND) - goto bad_background; - break; - - case PNG_CMAP_TRANS: - if (background_index >= cmap_entries || - background_index != PNG_CMAP_TRANS_BACKGROUND) - goto bad_background; - break; - - case PNG_CMAP_RGB: - if (background_index != PNG_CMAP_RGB_BACKGROUND) - goto bad_background; - break; - - case PNG_CMAP_RGB_ALPHA: - if (background_index != PNG_CMAP_RGB_ALPHA_BACKGROUND) - goto bad_background; - break; - - default: - png_error(png_ptr, "bad processing option (internal error)"); - - bad_background: - png_error(png_ptr, "bad background index (internal error)"); - } - - display->colormap_processing = (int)output_processing; - - return 1/*ok*/; -} - -/* The final part of the color-map read called from png_image_finish_read. */ -static int -png_image_read_and_map(png_voidp argument) -{ - png_image_read_control *display = png_voidcast(png_image_read_control*, - argument); - png_imagep image = display->image; - png_structrp png_ptr = image->opaque->png_ptr; - int passes; - - /* Called when the libpng data must be transformed into the color-mapped - * form. There is a local row buffer in display->local and this routine must - * do the interlace handling. - */ - switch (png_ptr->interlaced) - { - case PNG_INTERLACE_NONE: - passes = 1; - break; - - case PNG_INTERLACE_ADAM7: - passes = PNG_INTERLACE_ADAM7_PASSES; - break; - - default: - png_error(png_ptr, "unknown interlace type"); - } - - { - png_uint_32 height = image->height; - png_uint_32 width = image->width; - int proc = display->colormap_processing; - png_bytep first_row = png_voidcast(png_bytep, display->first_row); - ptrdiff_t step_row = display->row_bytes; - int pass; - - for (pass = 0; pass < passes; ++pass) - { - unsigned int startx, stepx, stepy; - png_uint_32 y; - - if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) - { - /* The row may be empty for a short image: */ - if (PNG_PASS_COLS(width, pass) == 0) - continue; - - startx = PNG_PASS_START_COL(pass); - stepx = PNG_PASS_COL_OFFSET(pass); - y = PNG_PASS_START_ROW(pass); - stepy = PNG_PASS_ROW_OFFSET(pass); - } - - else - { - y = 0; - startx = 0; - stepx = stepy = 1; - } - - for (; ylocal_row); - png_bytep outrow = first_row + y * step_row; - png_const_bytep end_row = outrow + width; - - /* Read read the libpng data into the temporary buffer. */ - png_read_row(png_ptr, inrow, NULL); - - /* Now process the row according to the processing option, note - * that the caller verifies that the format of the libpng output - * data is as required. - */ - outrow += startx; - switch (proc) - { - case PNG_CMAP_GA: - for (; outrow < end_row; outrow += stepx) - { - /* The data is always in the PNG order */ - unsigned int gray = *inrow++; - unsigned int alpha = *inrow++; - unsigned int entry; - - /* NOTE: this code is copied as a comment in - * make_ga_colormap above. Please update the - * comment if you change this code! - */ - if (alpha > 229) /* opaque */ - { - entry = (231 * gray + 128) >> 8; - } - else if (alpha < 26) /* transparent */ - { - entry = 231; - } - else /* partially opaque */ - { - entry = 226 + 6 * PNG_DIV51(alpha) + PNG_DIV51(gray); - } - - *outrow = (png_byte)entry; - } - break; - - case PNG_CMAP_TRANS: - for (; outrow < end_row; outrow += stepx) - { - png_byte gray = *inrow++; - png_byte alpha = *inrow++; - - if (alpha == 0) - *outrow = PNG_CMAP_TRANS_BACKGROUND; - - else if (gray != PNG_CMAP_TRANS_BACKGROUND) - *outrow = gray; - - else - *outrow = (png_byte)(PNG_CMAP_TRANS_BACKGROUND+1); - } - break; - - case PNG_CMAP_RGB: - for (; outrow < end_row; outrow += stepx) - { - *outrow = PNG_RGB_INDEX(inrow[0], inrow[1], inrow[2]); - inrow += 3; - } - break; - - case PNG_CMAP_RGB_ALPHA: - for (; outrow < end_row; outrow += stepx) - { - unsigned int alpha = inrow[3]; - - /* Because the alpha entries only hold alpha==0.5 values - * split the processing at alpha==0.25 (64) and 0.75 - * (196). - */ - - if (alpha >= 196) - *outrow = PNG_RGB_INDEX(inrow[0], inrow[1], - inrow[2]); - - else if (alpha < 64) - *outrow = PNG_CMAP_RGB_ALPHA_BACKGROUND; - - else - { - /* Likewise there are three entries for each of r, g - * and b. We could select the entry by popcount on - * the top two bits on those architectures that - * support it, this is what the code below does, - * crudely. - */ - unsigned int back_i = PNG_CMAP_RGB_ALPHA_BACKGROUND+1; - - /* Here are how the values map: - * - * 0x00 .. 0x3f -> 0 - * 0x40 .. 0xbf -> 1 - * 0xc0 .. 0xff -> 2 - * - * So, as above with the explicit alpha checks, the - * breakpoints are at 64 and 196. - */ - if (inrow[0] & 0x80) back_i += 9; /* red */ - if (inrow[0] & 0x40) back_i += 9; - if (inrow[0] & 0x80) back_i += 3; /* green */ - if (inrow[0] & 0x40) back_i += 3; - if (inrow[0] & 0x80) back_i += 1; /* blue */ - if (inrow[0] & 0x40) back_i += 1; - - *outrow = (png_byte)back_i; - } - - inrow += 4; - } - break; - - default: - break; - } - } - } - } - - return 1; -} - -static int -png_image_read_colormapped(png_voidp argument) -{ - png_image_read_control *display = png_voidcast(png_image_read_control*, - argument); - png_imagep image = display->image; - png_controlp control = image->opaque; - png_structrp png_ptr = control->png_ptr; - png_inforp info_ptr = control->info_ptr; - - int passes = 0; /* As a flag */ - - PNG_SKIP_CHUNKS(png_ptr); - - /* Update the 'info' structure and make sure the result is as required; first - * make sure to turn on the interlace handling if it will be required - * (because it can't be turned on *after* the call to png_read_update_info!) - */ - if (display->colormap_processing == PNG_CMAP_NONE) - passes = png_set_interlace_handling(png_ptr); - - png_read_update_info(png_ptr, info_ptr); - - /* The expected output can be deduced from the colormap_processing option. */ - switch (display->colormap_processing) - { - case PNG_CMAP_NONE: - /* Output must be one channel and one byte per pixel, the output - * encoding can be anything. - */ - if ((info_ptr->color_type == PNG_COLOR_TYPE_PALETTE || - info_ptr->color_type == PNG_COLOR_TYPE_GRAY) && - info_ptr->bit_depth == 8) - break; - - goto bad_output; - - case PNG_CMAP_TRANS: - case PNG_CMAP_GA: - /* Output must be two channels and the 'G' one must be sRGB, the latter - * can be checked with an exact number because it should have been set - * to this number above! - */ - if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA && - info_ptr->bit_depth == 8 && - png_ptr->screen_gamma == PNG_GAMMA_sRGB && - image->colormap_entries == 256) - break; - - goto bad_output; - - case PNG_CMAP_RGB: - /* Output must be 8-bit sRGB encoded RGB */ - if (info_ptr->color_type == PNG_COLOR_TYPE_RGB && - info_ptr->bit_depth == 8 && - png_ptr->screen_gamma == PNG_GAMMA_sRGB && - image->colormap_entries == 216) - break; - - goto bad_output; - - case PNG_CMAP_RGB_ALPHA: - /* Output must be 8-bit sRGB encoded RGBA */ - if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA && - info_ptr->bit_depth == 8 && - png_ptr->screen_gamma == PNG_GAMMA_sRGB && - image->colormap_entries == 244 /* 216 + 1 + 27 */) - break; - - goto bad_output; - - default: - bad_output: - png_error(png_ptr, "bad color-map processing (internal error)"); - } - - /* Now read the rows. Do this here if it is possible to read directly into - * the output buffer, otherwise allocate a local row buffer of the maximum - * size libpng requires and call the relevant processing routine safely. - */ - { - png_voidp first_row = display->buffer; - ptrdiff_t row_bytes = display->row_stride; - - /* The following expression is designed to work correctly whether it gives - * a signed or an unsigned result. - */ - if (row_bytes < 0) - { - char *ptr = png_voidcast(char*, first_row); - ptr += (image->height-1) * (-row_bytes); - first_row = png_voidcast(png_voidp, ptr); - } - - display->first_row = first_row; - display->row_bytes = row_bytes; - } - - if (passes == 0) - { - int result; - png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr)); - - display->local_row = row; - result = png_safe_execute(image, png_image_read_and_map, display); - display->local_row = NULL; - png_free(png_ptr, row); - - return result; - } - - else - { - png_alloc_size_t row_bytes = (png_alloc_size_t)display->row_bytes; - - while (--passes >= 0) - { - png_uint_32 y = image->height; - png_bytep row = png_voidcast(png_bytep, display->first_row); - - for (; y > 0; --y) - { - png_read_row(png_ptr, row, NULL); - row += row_bytes; - } - } - - return 1; - } -} - -/* Just the row reading part of png_image_read. */ -static int -png_image_read_composite(png_voidp argument) -{ - png_image_read_control *display = png_voidcast(png_image_read_control*, - argument); - png_imagep image = display->image; - png_structrp png_ptr = image->opaque->png_ptr; - int passes; - - switch (png_ptr->interlaced) - { - case PNG_INTERLACE_NONE: - passes = 1; - break; - - case PNG_INTERLACE_ADAM7: - passes = PNG_INTERLACE_ADAM7_PASSES; - break; - - default: - png_error(png_ptr, "unknown interlace type"); - } - - { - png_uint_32 height = image->height; - png_uint_32 width = image->width; - ptrdiff_t step_row = display->row_bytes; - unsigned int channels = - (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ? 3 : 1; - int pass; - - for (pass = 0; pass < passes; ++pass) - { - unsigned int startx, stepx, stepy; - png_uint_32 y; - - if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) - { - /* The row may be empty for a short image: */ - if (PNG_PASS_COLS(width, pass) == 0) - continue; - - startx = PNG_PASS_START_COL(pass) * channels; - stepx = PNG_PASS_COL_OFFSET(pass) * channels; - y = PNG_PASS_START_ROW(pass); - stepy = PNG_PASS_ROW_OFFSET(pass); - } - - else - { - y = 0; - startx = 0; - stepx = channels; - stepy = 1; - } - - for (; ylocal_row); - png_bytep outrow; - png_const_bytep end_row; - - /* Read the row, which is packed: */ - png_read_row(png_ptr, inrow, NULL); - - outrow = png_voidcast(png_bytep, display->first_row); - outrow += y * step_row; - end_row = outrow + width * channels; - - /* Now do the composition on each pixel in this row. */ - outrow += startx; - for (; outrow < end_row; outrow += stepx) - { - png_byte alpha = inrow[channels]; - - if (alpha > 0) /* else no change to the output */ - { - unsigned int c; - - for (c=0; cimage; - png_structrp png_ptr = image->opaque->png_ptr; - png_inforp info_ptr = image->opaque->info_ptr; - png_uint_32 height = image->height; - png_uint_32 width = image->width; - int pass, passes; - - /* Double check the convoluted logic below. We expect to get here with - * libpng doing rgb to gray and gamma correction but background processing - * left to the png_image_read_background function. The rows libpng produce - * might be 8 or 16-bit but should always have two channels; gray plus alpha. - */ - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == 0) - png_error(png_ptr, "lost rgb to gray"); - - if ((png_ptr->transformations & PNG_COMPOSE) != 0) - png_error(png_ptr, "unexpected compose"); - - if (png_get_channels(png_ptr, info_ptr) != 2) - png_error(png_ptr, "lost/gained channels"); - - /* Expect the 8-bit case to always remove the alpha channel */ - if ((image->format & PNG_FORMAT_FLAG_LINEAR) == 0 && - (image->format & PNG_FORMAT_FLAG_ALPHA) != 0) - png_error(png_ptr, "unexpected 8-bit transformation"); - - switch (png_ptr->interlaced) - { - case PNG_INTERLACE_NONE: - passes = 1; - break; - - case PNG_INTERLACE_ADAM7: - passes = PNG_INTERLACE_ADAM7_PASSES; - break; - - default: - png_error(png_ptr, "unknown interlace type"); - } - - /* Use direct access to info_ptr here because otherwise the simplified API - * would require PNG_EASY_ACCESS_SUPPORTED (just for this.) Note this is - * checking the value after libpng expansions, not the original value in the - * PNG. - */ - switch (info_ptr->bit_depth) - { - case 8: - /* 8-bit sRGB gray values with an alpha channel; the alpha channel is - * to be removed by composing on a background: either the row if - * display->background is NULL or display->background->green if not. - * Unlike the code above ALPHA_OPTIMIZED has *not* been done. - */ - { - png_bytep first_row = png_voidcast(png_bytep, display->first_row); - ptrdiff_t step_row = display->row_bytes; - - for (pass = 0; pass < passes; ++pass) - { - png_bytep row = png_voidcast(png_bytep, display->first_row); - unsigned int startx, stepx, stepy; - png_uint_32 y; - - if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) - { - /* The row may be empty for a short image: */ - if (PNG_PASS_COLS(width, pass) == 0) - continue; - - startx = PNG_PASS_START_COL(pass); - stepx = PNG_PASS_COL_OFFSET(pass); - y = PNG_PASS_START_ROW(pass); - stepy = PNG_PASS_ROW_OFFSET(pass); - } - - else - { - y = 0; - startx = 0; - stepx = stepy = 1; - } - - if (display->background == NULL) - { - for (; ylocal_row); - png_bytep outrow = first_row + y * step_row; - png_const_bytep end_row = outrow + width; - - /* Read the row, which is packed: */ - png_read_row(png_ptr, inrow, NULL); - - /* Now do the composition on each pixel in this row. */ - outrow += startx; - for (; outrow < end_row; outrow += stepx) - { - png_byte alpha = inrow[1]; - - if (alpha > 0) /* else no change to the output */ - { - png_uint_32 component = inrow[0]; - - if (alpha < 255) /* else just use component */ - { - /* Since PNG_OPTIMIZED_ALPHA was not set it is - * necessary to invert the sRGB transfer - * function and multiply the alpha out. - */ - component = png_sRGB_table[component] * alpha; - component += png_sRGB_table[outrow[0]] * - (255-alpha); - component = PNG_sRGB_FROM_LINEAR(component); - } - - outrow[0] = (png_byte)component; - } - - inrow += 2; /* gray and alpha channel */ - } - } - } - - else /* constant background value */ - { - png_byte background8 = display->background->green; - png_uint_16 background = png_sRGB_table[background8]; - - for (; ylocal_row); - png_bytep outrow = first_row + y * step_row; - png_const_bytep end_row = outrow + width; - - /* Read the row, which is packed: */ - png_read_row(png_ptr, inrow, NULL); - - /* Now do the composition on each pixel in this row. */ - outrow += startx; - for (; outrow < end_row; outrow += stepx) - { - png_byte alpha = inrow[1]; - - if (alpha > 0) /* else use background */ - { - png_uint_32 component = inrow[0]; - - if (alpha < 255) /* else just use component */ - { - component = png_sRGB_table[component] * alpha; - component += background * (255-alpha); - component = PNG_sRGB_FROM_LINEAR(component); - } - - outrow[0] = (png_byte)component; - } - - else - outrow[0] = background8; - - inrow += 2; /* gray and alpha channel */ - } - - row += display->row_bytes; - } - } - } - } - break; - - case 16: - /* 16-bit linear with pre-multiplied alpha; the pre-multiplication must - * still be done and, maybe, the alpha channel removed. This code also - * handles the alpha-first option. - */ - { - png_uint_16p first_row = png_voidcast(png_uint_16p, - display->first_row); - /* The division by two is safe because the caller passed in a - * stride which was multiplied by 2 (below) to get row_bytes. - */ - ptrdiff_t step_row = display->row_bytes / 2; - unsigned int preserve_alpha = (image->format & - PNG_FORMAT_FLAG_ALPHA) != 0; - unsigned int outchannels = 1U+preserve_alpha; - int swap_alpha = 0; - -# ifdef PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED - if (preserve_alpha != 0 && - (image->format & PNG_FORMAT_FLAG_AFIRST) != 0) - swap_alpha = 1; -# endif - - for (pass = 0; pass < passes; ++pass) - { - unsigned int startx, stepx, stepy; - png_uint_32 y; - - /* The 'x' start and step are adjusted to output components here. - */ - if (png_ptr->interlaced == PNG_INTERLACE_ADAM7) - { - /* The row may be empty for a short image: */ - if (PNG_PASS_COLS(width, pass) == 0) - continue; - - startx = PNG_PASS_START_COL(pass) * outchannels; - stepx = PNG_PASS_COL_OFFSET(pass) * outchannels; - y = PNG_PASS_START_ROW(pass); - stepy = PNG_PASS_ROW_OFFSET(pass); - } - - else - { - y = 0; - startx = 0; - stepx = outchannels; - stepy = 1; - } - - for (; ylocal_row), NULL); - inrow = png_voidcast(png_const_uint_16p, display->local_row); - - /* Now do the pre-multiplication on each pixel in this row. - */ - outrow += startx; - for (; outrow < end_row; outrow += stepx) - { - png_uint_32 component = inrow[0]; - png_uint_16 alpha = inrow[1]; - - if (alpha > 0) /* else 0 */ - { - if (alpha < 65535) /* else just use component */ - { - component *= alpha; - component += 32767; - component /= 65535; - } - } - - else - component = 0; - - outrow[swap_alpha] = (png_uint_16)component; - if (preserve_alpha != 0) - outrow[1 ^ swap_alpha] = alpha; - - inrow += 2; /* components and alpha channel */ - } - } - } - } - break; - -#ifdef __GNUC__ - default: - png_error(png_ptr, "unexpected bit depth"); -#endif - } - - return 1; -} - -/* The guts of png_image_finish_read as a png_safe_execute callback. */ -static int -png_image_read_direct(png_voidp argument) -{ - png_image_read_control *display = png_voidcast(png_image_read_control*, - argument); - png_imagep image = display->image; - png_structrp png_ptr = image->opaque->png_ptr; - png_inforp info_ptr = image->opaque->info_ptr; - - png_uint_32 format = image->format; - int linear = (format & PNG_FORMAT_FLAG_LINEAR) != 0; - int do_local_compose = 0; - int do_local_background = 0; /* to avoid double gamma correction bug */ - int passes = 0; - - /* Add transforms to ensure the correct output format is produced then check - * that the required implementation support is there. Always expand; always - * need 8 bits minimum, no palette and expanded tRNS. - */ - png_set_expand(png_ptr); - - /* Now check the format to see if it was modified. */ - { - png_uint_32 base_format = png_image_format(png_ptr) & - ~PNG_FORMAT_FLAG_COLORMAP /* removed by png_set_expand */; - png_uint_32 change = format ^ base_format; - png_fixed_point output_gamma; - int mode; /* alpha mode */ - - /* Do this first so that we have a record if rgb to gray is happening. */ - if ((change & PNG_FORMAT_FLAG_COLOR) != 0) - { - /* gray<->color transformation required. */ - if ((format & PNG_FORMAT_FLAG_COLOR) != 0) - png_set_gray_to_rgb(png_ptr); - - else - { - /* libpng can't do both rgb to gray and - * background/pre-multiplication if there is also significant gamma - * correction, because both operations require linear colors and - * the code only supports one transform doing the gamma correction. - * Handle this by doing the pre-multiplication or background - * operation in this code, if necessary. - * - * TODO: fix this by rewriting pngrtran.c (!) - * - * For the moment (given that fixing this in pngrtran.c is an - * enormous change) 'do_local_background' is used to indicate that - * the problem exists. - */ - if ((base_format & PNG_FORMAT_FLAG_ALPHA) != 0) - do_local_background = 1/*maybe*/; - - png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE, - PNG_RGB_TO_GRAY_DEFAULT, PNG_RGB_TO_GRAY_DEFAULT); - } - - change &= ~PNG_FORMAT_FLAG_COLOR; - } - - /* Set the gamma appropriately, linear for 16-bit input, sRGB otherwise. - */ - { - png_fixed_point input_gamma_default; - - if ((base_format & PNG_FORMAT_FLAG_LINEAR) != 0 && - (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0) - input_gamma_default = PNG_GAMMA_LINEAR; - else - input_gamma_default = PNG_DEFAULT_sRGB; - - /* Call png_set_alpha_mode to set the default for the input gamma; the - * output gamma is set by a second call below. - */ - png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, input_gamma_default); - } - - if (linear != 0) - { - /* If there *is* an alpha channel in the input it must be multiplied - * out; use PNG_ALPHA_STANDARD, otherwise just use PNG_ALPHA_PNG. - */ - if ((base_format & PNG_FORMAT_FLAG_ALPHA) != 0) - mode = PNG_ALPHA_STANDARD; /* associated alpha */ - - else - mode = PNG_ALPHA_PNG; - - output_gamma = PNG_GAMMA_LINEAR; - } - - else - { - mode = PNG_ALPHA_PNG; - output_gamma = PNG_DEFAULT_sRGB; - } - - if ((change & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0) - { - mode = PNG_ALPHA_OPTIMIZED; - change &= ~PNG_FORMAT_FLAG_ASSOCIATED_ALPHA; - } - - /* If 'do_local_background' is set check for the presence of gamma - * correction; this is part of the work-round for the libpng bug - * described above. - * - * TODO: fix libpng and remove this. - */ - if (do_local_background != 0) - { - png_fixed_point gtest; - - /* This is 'png_gamma_threshold' from pngrtran.c; the test used for - * gamma correction, the screen gamma hasn't been set on png_struct - * yet; it's set below. png_struct::gamma, however, is set to the - * final value. - */ - if (png_muldiv(>est, output_gamma, png_ptr->colorspace.gamma, - PNG_FP_1) != 0 && png_gamma_significant(gtest) == 0) - do_local_background = 0; - - else if (mode == PNG_ALPHA_STANDARD) - { - do_local_background = 2/*required*/; - mode = PNG_ALPHA_PNG; /* prevent libpng doing it */ - } - - /* else leave as 1 for the checks below */ - } - - /* If the bit-depth changes then handle that here. */ - if ((change & PNG_FORMAT_FLAG_LINEAR) != 0) - { - if (linear != 0 /*16-bit output*/) - png_set_expand_16(png_ptr); - - else /* 8-bit output */ - png_set_scale_16(png_ptr); - - change &= ~PNG_FORMAT_FLAG_LINEAR; - } - - /* Now the background/alpha channel changes. */ - if ((change & PNG_FORMAT_FLAG_ALPHA) != 0) - { - /* Removing an alpha channel requires composition for the 8-bit - * formats; for the 16-bit it is already done, above, by the - * pre-multiplication and the channel just needs to be stripped. - */ - if ((base_format & PNG_FORMAT_FLAG_ALPHA) != 0) - { - /* If RGB->gray is happening the alpha channel must be left and the - * operation completed locally. - * - * TODO: fix libpng and remove this. - */ - if (do_local_background != 0) - do_local_background = 2/*required*/; - - /* 16-bit output: just remove the channel */ - else if (linear != 0) /* compose on black (well, pre-multiply) */ - png_set_strip_alpha(png_ptr); - - /* 8-bit output: do an appropriate compose */ - else if (display->background != NULL) - { - png_color_16 c; - - c.index = 0; /*unused*/ - c.red = display->background->red; - c.green = display->background->green; - c.blue = display->background->blue; - c.gray = display->background->green; - - /* This is always an 8-bit sRGB value, using the 'green' channel - * for gray is much better than calculating the luminance here; - * we can get off-by-one errors in that calculation relative to - * the app expectations and that will show up in transparent - * pixels. - */ - png_set_background_fixed(png_ptr, &c, - PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/, - 0/*gamma: not used*/); - } - - else /* compose on row: implemented below. */ - { - do_local_compose = 1; - /* This leaves the alpha channel in the output, so it has to be - * removed by the code below. Set the encoding to the 'OPTIMIZE' - * one so the code only has to hack on the pixels that require - * composition. - */ - mode = PNG_ALPHA_OPTIMIZED; - } - } - - else /* output needs an alpha channel */ - { - /* This is tricky because it happens before the swap operation has - * been accomplished; however, the swap does *not* swap the added - * alpha channel (weird API), so it must be added in the correct - * place. - */ - png_uint_32 filler; /* opaque filler */ - int where; - - if (linear != 0) - filler = 65535; - - else - filler = 255; - -#ifdef PNG_FORMAT_AFIRST_SUPPORTED - if ((format & PNG_FORMAT_FLAG_AFIRST) != 0) - { - where = PNG_FILLER_BEFORE; - change &= ~PNG_FORMAT_FLAG_AFIRST; - } - - else -#endif - where = PNG_FILLER_AFTER; - - png_set_add_alpha(png_ptr, filler, where); - } - - /* This stops the (irrelevant) call to swap_alpha below. */ - change &= ~PNG_FORMAT_FLAG_ALPHA; - } - - /* Now set the alpha mode correctly; this is always done, even if there is - * no alpha channel in either the input or the output because it correctly - * sets the output gamma. - */ - png_set_alpha_mode_fixed(png_ptr, mode, output_gamma); - -# ifdef PNG_FORMAT_BGR_SUPPORTED - if ((change & PNG_FORMAT_FLAG_BGR) != 0) - { - /* Check only the output format; PNG is never BGR; don't do this if - * the output is gray, but fix up the 'format' value in that case. - */ - if ((format & PNG_FORMAT_FLAG_COLOR) != 0) - png_set_bgr(png_ptr); - - else - format &= ~PNG_FORMAT_FLAG_BGR; - - change &= ~PNG_FORMAT_FLAG_BGR; - } -# endif - -# ifdef PNG_FORMAT_AFIRST_SUPPORTED - if ((change & PNG_FORMAT_FLAG_AFIRST) != 0) - { - /* Only relevant if there is an alpha channel - it's particularly - * important to handle this correctly because do_local_compose may - * be set above and then libpng will keep the alpha channel for this - * code to remove. - */ - if ((format & PNG_FORMAT_FLAG_ALPHA) != 0) - { - /* Disable this if doing a local background, - * TODO: remove this when local background is no longer required. - */ - if (do_local_background != 2) - png_set_swap_alpha(png_ptr); - } - - else - format &= ~PNG_FORMAT_FLAG_AFIRST; - - change &= ~PNG_FORMAT_FLAG_AFIRST; - } -# endif - - /* If the *output* is 16-bit then we need to check for a byte-swap on this - * architecture. - */ - if (linear != 0) - { - PNG_CONST png_uint_16 le = 0x0001; - - if ((*(png_const_bytep) & le) != 0) - png_set_swap(png_ptr); - } - - /* If change is not now 0 some transformation is missing - error out. */ - if (change != 0) - png_error(png_ptr, "png_read_image: unsupported transformation"); - } - - PNG_SKIP_CHUNKS(png_ptr); - - /* Update the 'info' structure and make sure the result is as required; first - * make sure to turn on the interlace handling if it will be required - * (because it can't be turned on *after* the call to png_read_update_info!) - * - * TODO: remove the do_local_background fixup below. - */ - if (do_local_compose == 0 && do_local_background != 2) - passes = png_set_interlace_handling(png_ptr); - - png_read_update_info(png_ptr, info_ptr); - - { - png_uint_32 info_format = 0; - - if ((info_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - info_format |= PNG_FORMAT_FLAG_COLOR; - - if ((info_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0) - { - /* do_local_compose removes this channel below. */ - if (do_local_compose == 0) - { - /* do_local_background does the same if required. */ - if (do_local_background != 2 || - (format & PNG_FORMAT_FLAG_ALPHA) != 0) - info_format |= PNG_FORMAT_FLAG_ALPHA; - } - } - - else if (do_local_compose != 0) /* internal error */ - png_error(png_ptr, "png_image_read: alpha channel lost"); - - if ((format & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0) { - info_format |= PNG_FORMAT_FLAG_ASSOCIATED_ALPHA; - } - - if (info_ptr->bit_depth == 16) - info_format |= PNG_FORMAT_FLAG_LINEAR; - -#ifdef PNG_FORMAT_BGR_SUPPORTED - if ((png_ptr->transformations & PNG_BGR) != 0) - info_format |= PNG_FORMAT_FLAG_BGR; -#endif - -#ifdef PNG_FORMAT_AFIRST_SUPPORTED - if (do_local_background == 2) - { - if ((format & PNG_FORMAT_FLAG_AFIRST) != 0) - info_format |= PNG_FORMAT_FLAG_AFIRST; - } - - if ((png_ptr->transformations & PNG_SWAP_ALPHA) != 0 || - ((png_ptr->transformations & PNG_ADD_ALPHA) != 0 && - (png_ptr->flags & PNG_FLAG_FILLER_AFTER) == 0)) - { - if (do_local_background == 2) - png_error(png_ptr, "unexpected alpha swap transformation"); - - info_format |= PNG_FORMAT_FLAG_AFIRST; - } -# endif - - /* This is actually an internal error. */ - if (info_format != format) - png_error(png_ptr, "png_read_image: invalid transformations"); - } - - /* Now read the rows. If do_local_compose is set then it is necessary to use - * a local row buffer. The output will be GA, RGBA or BGRA and must be - * converted to G, RGB or BGR as appropriate. The 'local_row' member of the - * display acts as a flag. - */ - { - png_voidp first_row = display->buffer; - ptrdiff_t row_bytes = display->row_stride; - - if (linear != 0) - row_bytes *= 2; - - /* The following expression is designed to work correctly whether it gives - * a signed or an unsigned result. - */ - if (row_bytes < 0) - { - char *ptr = png_voidcast(char*, first_row); - ptr += (image->height-1) * (-row_bytes); - first_row = png_voidcast(png_voidp, ptr); - } - - display->first_row = first_row; - display->row_bytes = row_bytes; - } - - if (do_local_compose != 0) - { - int result; - png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr)); - - display->local_row = row; - result = png_safe_execute(image, png_image_read_composite, display); - display->local_row = NULL; - png_free(png_ptr, row); - - return result; - } - - else if (do_local_background == 2) - { - int result; - png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr)); - - display->local_row = row; - result = png_safe_execute(image, png_image_read_background, display); - display->local_row = NULL; - png_free(png_ptr, row); - - return result; - } - - else - { - png_alloc_size_t row_bytes = (png_alloc_size_t)display->row_bytes; - - while (--passes >= 0) - { - png_uint_32 y = image->height; - png_bytep row = png_voidcast(png_bytep, display->first_row); - - for (; y > 0; --y) - { - png_read_row(png_ptr, row, NULL); - row += row_bytes; - } - } - - return 1; - } -} - -int PNGAPI -png_image_finish_read(png_imagep image, png_const_colorp background, - void *buffer, png_int_32 row_stride, void *colormap) -{ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - /* Check for row_stride overflow. This check is not performed on the - * original PNG format because it may not occur in the output PNG format - * and libpng deals with the issues of reading the original. - */ - const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format); - - /* The following checks just the 'row_stride' calculation to ensure it - * fits in a signed 32-bit value. Because channels/components can be - * either 1 or 2 bytes in size the length of a row can still overflow 32 - * bits; this is just to verify that the 'row_stride' argument can be - * represented. - */ - if (image->width <= 0x7fffffffU/channels) /* no overflow */ - { - png_uint_32 check; - const png_uint_32 png_row_stride = image->width * channels; - - if (row_stride == 0) - row_stride = (png_int_32)/*SAFE*/png_row_stride; - - if (row_stride < 0) - check = (png_uint_32)(-row_stride); - - else - check = (png_uint_32)row_stride; - - /* This verifies 'check', the absolute value of the actual stride - * passed in and detects overflow in the application calculation (i.e. - * if the app did actually pass in a non-zero 'row_stride'. - */ - if (image->opaque != NULL && buffer != NULL && check >= png_row_stride) - { - /* Now check for overflow of the image buffer calculation; this - * limits the whole image size to 32 bits for API compatibility with - * the current, 32-bit, PNG_IMAGE_BUFFER_SIZE macro. - * - * The PNG_IMAGE_BUFFER_SIZE macro is: - * - * (PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)*height*(row_stride)) - * - * And the component size is always 1 or 2, so make sure that the - * number of *bytes* that the application is saying are available - * does actually fit into a 32-bit number. - * - * NOTE: this will be changed in 1.7 because PNG_IMAGE_BUFFER_SIZE - * will be changed to use png_alloc_size_t; bigger images can be - * accomodated on 64-bit systems. - */ - if (image->height <= - 0xffffffffU/PNG_IMAGE_PIXEL_COMPONENT_SIZE(image->format)/check) - { - if ((image->format & PNG_FORMAT_FLAG_COLORMAP) == 0 || - (image->colormap_entries > 0 && colormap != NULL)) - { - int result; - png_image_read_control display; - - memset(&display, 0, (sizeof display)); - display.image = image; - display.buffer = buffer; - display.row_stride = row_stride; - display.colormap = colormap; - display.background = background; - display.local_row = NULL; - - /* Choose the correct 'end' routine; for the color-map case - * all the setup has already been done. - */ - if ((image->format & PNG_FORMAT_FLAG_COLORMAP) != 0) - result = - png_safe_execute(image, - png_image_read_colormap, &display) && - png_safe_execute(image, - png_image_read_colormapped, &display); - - else - result = - png_safe_execute(image, - png_image_read_direct, &display); - - png_image_free(image); - return result; - } - - else - return png_image_error(image, - "png_image_finish_read[color-map]: no color-map"); - } - - else - return png_image_error(image, - "png_image_finish_read: image too large"); - } - - else - return png_image_error(image, - "png_image_finish_read: invalid argument"); - } - - else - return png_image_error(image, - "png_image_finish_read: row_stride too large"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_finish_read: damaged PNG_IMAGE_VERSION"); - - return 0; -} - -#endif /* SIMPLIFIED_READ */ -#endif /* READ */ diff --git a/project/jni/png/pngrio.c b/project/jni/png/pngrio.c deleted file mode 100644 index 7e26e855c..000000000 --- a/project/jni/png/pngrio.c +++ /dev/null @@ -1,120 +0,0 @@ - -/* pngrio.c - functions for data input - * - * Last changed in libpng 1.6.24 [August 4, 2016] - * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all input. Users who need - * special handling are expected to write a function that has the same - * arguments as this and performs a similar function, but that possibly - * has a different input method. Note that you shouldn't change this - * function, but rather write a replacement function and then make - * libpng use it at run time with png_set_read_fn(...). - */ - -#include "pngpriv.h" - -#ifdef PNG_READ_SUPPORTED - -/* Read the data from whatever input you are using. The default routine - * reads from a file pointer. Note that this routine sometimes gets called - * with very small lengths, so you should implement some kind of simple - * buffering if you are using unbuffered reads. This should never be asked - * to read more than 64K on a 16-bit machine. - */ -void /* PRIVATE */ -png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length) -{ - png_debug1(4, "reading %d bytes", (int)length); - - if (png_ptr->read_data_fn != NULL) - (*(png_ptr->read_data_fn))(png_ptr, data, length); - - else - png_error(png_ptr, "Call to NULL read function"); -} - -#ifdef PNG_STDIO_SUPPORTED -/* This is the function that does the actual reading of data. If you are - * not reading from a standard C stream, you should create a replacement - * read_data function and use it at run time with png_set_read_fn(), rather - * than changing the library. - */ -void PNGCBAPI -png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_size_t check; - - if (png_ptr == NULL) - return; - - /* fread() returns 0 on error, so it is OK to store this in a png_size_t - * instead of an int, which is what fread() actually returns. - */ - check = fread(data, 1, length, png_voidcast(png_FILE_p, png_ptr->io_ptr)); - - if (check != length) - png_error(png_ptr, "Read Error"); -} -#endif - -/* This function allows the application to supply a new input function - * for libpng if standard C streams aren't being used. - * - * This function takes as its arguments: - * - * png_ptr - pointer to a png input data structure - * - * io_ptr - pointer to user supplied structure containing info about - * the input functions. May be NULL. - * - * read_data_fn - pointer to a new input function that takes as its - * arguments a pointer to a png_struct, a pointer to - * a location where input data can be stored, and a 32-bit - * unsigned int that is the number of bytes to be read. - * To exit and output any fatal error messages the new write - * function should call png_error(png_ptr, "Error msg"). - * May be NULL, in which case libpng's default function will - * be used. - */ -void PNGAPI -png_set_read_fn(png_structrp png_ptr, png_voidp io_ptr, - png_rw_ptr read_data_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->io_ptr = io_ptr; - -#ifdef PNG_STDIO_SUPPORTED - if (read_data_fn != NULL) - png_ptr->read_data_fn = read_data_fn; - - else - png_ptr->read_data_fn = png_default_read_data; -#else - png_ptr->read_data_fn = read_data_fn; -#endif - -#ifdef PNG_WRITE_SUPPORTED - /* It is an error to write to a read device */ - if (png_ptr->write_data_fn != NULL) - { - png_ptr->write_data_fn = NULL; - png_warning(png_ptr, - "Can't set both read_data_fn and write_data_fn in the" - " same structure"); - } -#endif - -#ifdef PNG_WRITE_FLUSH_SUPPORTED - png_ptr->output_flush_fn = NULL; -#endif -} -#endif /* READ */ diff --git a/project/jni/png/pngrtran.c b/project/jni/png/pngrtran.c deleted file mode 100644 index c18965031..000000000 --- a/project/jni/png/pngrtran.c +++ /dev/null @@ -1,5010 +0,0 @@ - -/* pngrtran.c - transforms the data in a row for PNG readers - * - * Last changed in libpng 1.6.33 [September 28, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file contains functions optionally called by an application - * in order to tell libpng how to handle data when reading a PNG. - * Transformations that are used in both reading and writing are - * in pngtrans.c. - */ - -#include "pngpriv.h" - -#ifdef PNG_READ_SUPPORTED - -/* Set the action on getting a CRC error for an ancillary or critical chunk. */ -void PNGAPI -png_set_crc_action(png_structrp png_ptr, int crit_action, int ancil_action) -{ - png_debug(1, "in png_set_crc_action"); - - if (png_ptr == NULL) - return; - - /* Tell libpng how we react to CRC errors in critical chunks */ - switch (crit_action) - { - case PNG_CRC_NO_CHANGE: /* Leave setting as is */ - break; - - case PNG_CRC_WARN_USE: /* Warn/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; - png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE; - break; - - case PNG_CRC_QUIET_USE: /* Quiet/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; - png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE | - PNG_FLAG_CRC_CRITICAL_IGNORE; - break; - - case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */ - png_warning(png_ptr, - "Can't discard critical data on CRC error"); - /* FALLTHROUGH */ - case PNG_CRC_ERROR_QUIT: /* Error/quit */ - - case PNG_CRC_DEFAULT: - default: - png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK; - break; - } - - /* Tell libpng how we react to CRC errors in ancillary chunks */ - switch (ancil_action) - { - case PNG_CRC_NO_CHANGE: /* Leave setting as is */ - break; - - case PNG_CRC_WARN_USE: /* Warn/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE; - break; - - case PNG_CRC_QUIET_USE: /* Quiet/use data */ - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE | - PNG_FLAG_CRC_ANCILLARY_NOWARN; - break; - - case PNG_CRC_ERROR_QUIT: /* Error/quit */ - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN; - break; - - case PNG_CRC_WARN_DISCARD: /* Warn/discard data */ - - case PNG_CRC_DEFAULT: - default: - png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK; - break; - } -} - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED -/* Is it OK to set a transformation now? Only if png_start_read_image or - * png_read_update_info have not been called. It is not necessary for the IHDR - * to have been read in all cases; the need_IHDR parameter allows for this - * check too. - */ -static int -png_rtran_ok(png_structrp png_ptr, int need_IHDR) -{ - if (png_ptr != NULL) - { - if ((png_ptr->flags & PNG_FLAG_ROW_INIT) != 0) - png_app_error(png_ptr, - "invalid after png_start_read_image or png_read_update_info"); - - else if (need_IHDR && (png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_app_error(png_ptr, "invalid before the PNG header has been read"); - - else - { - /* Turn on failure to initialize correctly for all transforms. */ - png_ptr->flags |= PNG_FLAG_DETECT_UNINITIALIZED; - - return 1; /* Ok */ - } - } - - return 0; /* no png_error possible! */ -} -#endif - -#ifdef PNG_READ_BACKGROUND_SUPPORTED -/* Handle alpha and tRNS via a background color */ -void PNGFAPI -png_set_background_fixed(png_structrp png_ptr, - png_const_color_16p background_color, int background_gamma_code, - int need_expand, png_fixed_point background_gamma) -{ - png_debug(1, "in png_set_background_fixed"); - - if (png_rtran_ok(png_ptr, 0) == 0 || background_color == NULL) - return; - - if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN) - { - png_warning(png_ptr, "Application must supply a known background gamma"); - return; - } - - png_ptr->transformations |= PNG_COMPOSE | PNG_STRIP_ALPHA; - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - - png_ptr->background = *background_color; - png_ptr->background_gamma = background_gamma; - png_ptr->background_gamma_type = (png_byte)(background_gamma_code); - if (need_expand != 0) - png_ptr->transformations |= PNG_BACKGROUND_EXPAND; - else - png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND; -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_background(png_structrp png_ptr, - png_const_color_16p background_color, int background_gamma_code, - int need_expand, double background_gamma) -{ - png_set_background_fixed(png_ptr, background_color, background_gamma_code, - need_expand, png_fixed(png_ptr, background_gamma, "png_set_background")); -} -# endif /* FLOATING_POINT */ -#endif /* READ_BACKGROUND */ - -/* Scale 16-bit depth files to 8-bit depth. If both of these are set then the - * one that pngrtran does first (scale) happens. This is necessary to allow the - * TRANSFORM and API behavior to be somewhat consistent, and it's simpler. - */ -#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED -void PNGAPI -png_set_scale_16(png_structrp png_ptr) -{ - png_debug(1, "in png_set_scale_16"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= PNG_SCALE_16_TO_8; -} -#endif - -#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED -/* Chop 16-bit depth files to 8-bit depth */ -void PNGAPI -png_set_strip_16(png_structrp png_ptr) -{ - png_debug(1, "in png_set_strip_16"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= PNG_16_TO_8; -} -#endif - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED -void PNGAPI -png_set_strip_alpha(png_structrp png_ptr) -{ - png_debug(1, "in png_set_strip_alpha"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= PNG_STRIP_ALPHA; -} -#endif - -#if defined(PNG_READ_ALPHA_MODE_SUPPORTED) || defined(PNG_READ_GAMMA_SUPPORTED) -static png_fixed_point -translate_gamma_flags(png_structrp png_ptr, png_fixed_point output_gamma, - int is_screen) -{ - /* Check for flag values. The main reason for having the old Mac value as a - * flag is that it is pretty near impossible to work out what the correct - * value is from Apple documentation - a working Mac system is needed to - * discover the value! - */ - if (output_gamma == PNG_DEFAULT_sRGB || - output_gamma == PNG_FP_1 / PNG_DEFAULT_sRGB) - { - /* If there is no sRGB support this just sets the gamma to the standard - * sRGB value. (This is a side effect of using this function!) - */ -# ifdef PNG_READ_sRGB_SUPPORTED - png_ptr->flags |= PNG_FLAG_ASSUME_sRGB; -# else - PNG_UNUSED(png_ptr) -# endif - if (is_screen != 0) - output_gamma = PNG_GAMMA_sRGB; - else - output_gamma = PNG_GAMMA_sRGB_INVERSE; - } - - else if (output_gamma == PNG_GAMMA_MAC_18 || - output_gamma == PNG_FP_1 / PNG_GAMMA_MAC_18) - { - if (is_screen != 0) - output_gamma = PNG_GAMMA_MAC_OLD; - else - output_gamma = PNG_GAMMA_MAC_INVERSE; - } - - return output_gamma; -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -static png_fixed_point -convert_gamma_value(png_structrp png_ptr, double output_gamma) -{ - /* The following silently ignores cases where fixed point (times 100,000) - * gamma values are passed to the floating point API. This is safe and it - * means the fixed point constants work just fine with the floating point - * API. The alternative would just lead to undetected errors and spurious - * bug reports. Negative values fail inside the _fixed API unless they - * correspond to the flag values. - */ - if (output_gamma > 0 && output_gamma < 128) - output_gamma *= PNG_FP_1; - - /* This preserves -1 and -2 exactly: */ - output_gamma = floor(output_gamma + .5); - - if (output_gamma > PNG_FP_MAX || output_gamma < PNG_FP_MIN) - png_fixed_error(png_ptr, "gamma value"); - - return (png_fixed_point)output_gamma; -} -# endif -#endif /* READ_ALPHA_MODE || READ_GAMMA */ - -#ifdef PNG_READ_ALPHA_MODE_SUPPORTED -void PNGFAPI -png_set_alpha_mode_fixed(png_structrp png_ptr, int mode, - png_fixed_point output_gamma) -{ - int compose = 0; - png_fixed_point file_gamma; - - png_debug(1, "in png_set_alpha_mode"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/); - - /* Validate the value to ensure it is in a reasonable range. The value - * is expected to be 1 or greater, but this range test allows for some - * viewing correction values. The intent is to weed out users of this API - * who use the inverse of the gamma value accidentally! Since some of these - * values are reasonable this may have to be changed: - * - * 1.6.x: changed from 0.07..3 to 0.01..100 (to accomodate the optimal 16-bit - * gamma of 36, and its reciprocal.) - */ - if (output_gamma < 1000 || output_gamma > 10000000) - png_error(png_ptr, "output gamma out of expected range"); - - /* The default file gamma is the inverse of the output gamma; the output - * gamma may be changed below so get the file value first: - */ - file_gamma = png_reciprocal(output_gamma); - - /* There are really 8 possibilities here, composed of any combination - * of: - * - * premultiply the color channels - * do not encode non-opaque pixels - * encode the alpha as well as the color channels - * - * The differences disappear if the input/output ('screen') gamma is 1.0, - * because then the encoding is a no-op and there is only the choice of - * premultiplying the color channels or not. - * - * png_set_alpha_mode and png_set_background interact because both use - * png_compose to do the work. Calling both is only useful when - * png_set_alpha_mode is used to set the default mode - PNG_ALPHA_PNG - along - * with a default gamma value. Otherwise PNG_COMPOSE must not be set. - */ - switch (mode) - { - case PNG_ALPHA_PNG: /* default: png standard */ - /* No compose, but it may be set by png_set_background! */ - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - break; - - case PNG_ALPHA_ASSOCIATED: /* color channels premultiplied */ - compose = 1; - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - /* The output is linear: */ - output_gamma = PNG_FP_1; - break; - - case PNG_ALPHA_OPTIMIZED: /* associated, non-opaque pixels linear */ - compose = 1; - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags |= PNG_FLAG_OPTIMIZE_ALPHA; - /* output_gamma records the encoding of opaque pixels! */ - break; - - case PNG_ALPHA_BROKEN: /* associated, non-linear, alpha encoded */ - compose = 1; - png_ptr->transformations |= PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - break; - - default: - png_error(png_ptr, "invalid alpha mode"); - } - - /* Only set the default gamma if the file gamma has not been set (this has - * the side effect that the gamma in a second call to png_set_alpha_mode will - * be ignored.) - */ - if (png_ptr->colorspace.gamma == 0) - { - png_ptr->colorspace.gamma = file_gamma; - png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; - } - - /* But always set the output gamma: */ - png_ptr->screen_gamma = output_gamma; - - /* Finally, if pre-multiplying, set the background fields to achieve the - * desired result. - */ - if (compose != 0) - { - /* And obtain alpha pre-multiplication by composing on black: */ - memset(&png_ptr->background, 0, (sizeof png_ptr->background)); - png_ptr->background_gamma = png_ptr->colorspace.gamma; /* just in case */ - png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_FILE; - png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND; - - if ((png_ptr->transformations & PNG_COMPOSE) != 0) - png_error(png_ptr, - "conflicting calls to set alpha mode and background"); - - png_ptr->transformations |= PNG_COMPOSE; - } -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_alpha_mode(png_structrp png_ptr, int mode, double output_gamma) -{ - png_set_alpha_mode_fixed(png_ptr, mode, convert_gamma_value(png_ptr, - output_gamma)); -} -# endif -#endif - -#ifdef PNG_READ_QUANTIZE_SUPPORTED -/* Dither file to 8-bit. Supply a palette, the current number - * of elements in the palette, the maximum number of elements - * allowed, and a histogram if possible. If the current number - * of colors is greater than the maximum number, the palette will be - * modified to fit in the maximum number. "full_quantize" indicates - * whether we need a quantizing cube set up for RGB images, or if we - * simply are reducing the number of colors in a paletted image. - */ - -typedef struct png_dsort_struct -{ - struct png_dsort_struct * next; - png_byte left; - png_byte right; -} png_dsort; -typedef png_dsort * png_dsortp; -typedef png_dsort * * png_dsortpp; - -void PNGAPI -png_set_quantize(png_structrp png_ptr, png_colorp palette, - int num_palette, int maximum_colors, png_const_uint_16p histogram, - int full_quantize) -{ - png_debug(1, "in png_set_quantize"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= PNG_QUANTIZE; - - if (full_quantize == 0) - { - int i; - - png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr, - (png_alloc_size_t)((png_uint_32)num_palette * (sizeof (png_byte)))); - for (i = 0; i < num_palette; i++) - png_ptr->quantize_index[i] = (png_byte)i; - } - - if (num_palette > maximum_colors) - { - if (histogram != NULL) - { - /* This is easy enough, just throw out the least used colors. - * Perhaps not the best solution, but good enough. - */ - - int i; - - /* Initialize an array to sort colors */ - png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr, - (png_alloc_size_t)((png_uint_32)num_palette * (sizeof (png_byte)))); - - /* Initialize the quantize_sort array */ - for (i = 0; i < num_palette; i++) - png_ptr->quantize_sort[i] = (png_byte)i; - - /* Find the least used palette entries by starting a - * bubble sort, and running it until we have sorted - * out enough colors. Note that we don't care about - * sorting all the colors, just finding which are - * least used. - */ - - for (i = num_palette - 1; i >= maximum_colors; i--) - { - int done; /* To stop early if the list is pre-sorted */ - int j; - - done = 1; - for (j = 0; j < i; j++) - { - if (histogram[png_ptr->quantize_sort[j]] - < histogram[png_ptr->quantize_sort[j + 1]]) - { - png_byte t; - - t = png_ptr->quantize_sort[j]; - png_ptr->quantize_sort[j] = png_ptr->quantize_sort[j + 1]; - png_ptr->quantize_sort[j + 1] = t; - done = 0; - } - } - - if (done != 0) - break; - } - - /* Swap the palette around, and set up a table, if necessary */ - if (full_quantize != 0) - { - int j = num_palette; - - /* Put all the useful colors within the max, but don't - * move the others. - */ - for (i = 0; i < maximum_colors; i++) - { - if ((int)png_ptr->quantize_sort[i] >= maximum_colors) - { - do - j--; - while ((int)png_ptr->quantize_sort[j] >= maximum_colors); - - palette[i] = palette[j]; - } - } - } - else - { - int j = num_palette; - - /* Move all the used colors inside the max limit, and - * develop a translation table. - */ - for (i = 0; i < maximum_colors; i++) - { - /* Only move the colors we need to */ - if ((int)png_ptr->quantize_sort[i] >= maximum_colors) - { - png_color tmp_color; - - do - j--; - while ((int)png_ptr->quantize_sort[j] >= maximum_colors); - - tmp_color = palette[j]; - palette[j] = palette[i]; - palette[i] = tmp_color; - /* Indicate where the color went */ - png_ptr->quantize_index[j] = (png_byte)i; - png_ptr->quantize_index[i] = (png_byte)j; - } - } - - /* Find closest color for those colors we are not using */ - for (i = 0; i < num_palette; i++) - { - if ((int)png_ptr->quantize_index[i] >= maximum_colors) - { - int min_d, k, min_k, d_index; - - /* Find the closest color to one we threw out */ - d_index = png_ptr->quantize_index[i]; - min_d = PNG_COLOR_DIST(palette[d_index], palette[0]); - for (k = 1, min_k = 0; k < maximum_colors; k++) - { - int d; - - d = PNG_COLOR_DIST(palette[d_index], palette[k]); - - if (d < min_d) - { - min_d = d; - min_k = k; - } - } - /* Point to closest color */ - png_ptr->quantize_index[i] = (png_byte)min_k; - } - } - } - png_free(png_ptr, png_ptr->quantize_sort); - png_ptr->quantize_sort = NULL; - } - else - { - /* This is much harder to do simply (and quickly). Perhaps - * we need to go through a median cut routine, but those - * don't always behave themselves with only a few colors - * as input. So we will just find the closest two colors, - * and throw out one of them (chosen somewhat randomly). - * [We don't understand this at all, so if someone wants to - * work on improving it, be our guest - AED, GRP] - */ - int i; - int max_d; - int num_new_palette; - png_dsortp t; - png_dsortpp hash; - - t = NULL; - - /* Initialize palette index arrays */ - png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr, - (png_alloc_size_t)((png_uint_32)num_palette * - (sizeof (png_byte)))); - png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr, - (png_alloc_size_t)((png_uint_32)num_palette * - (sizeof (png_byte)))); - - /* Initialize the sort array */ - for (i = 0; i < num_palette; i++) - { - png_ptr->index_to_palette[i] = (png_byte)i; - png_ptr->palette_to_index[i] = (png_byte)i; - } - - hash = (png_dsortpp)png_calloc(png_ptr, (png_alloc_size_t)(769 * - (sizeof (png_dsortp)))); - - num_new_palette = num_palette; - - /* Initial wild guess at how far apart the farthest pixel - * pair we will be eliminating will be. Larger - * numbers mean more areas will be allocated, Smaller - * numbers run the risk of not saving enough data, and - * having to do this all over again. - * - * I have not done extensive checking on this number. - */ - max_d = 96; - - while (num_new_palette > maximum_colors) - { - for (i = 0; i < num_new_palette - 1; i++) - { - int j; - - for (j = i + 1; j < num_new_palette; j++) - { - int d; - - d = PNG_COLOR_DIST(palette[i], palette[j]); - - if (d <= max_d) - { - - t = (png_dsortp)png_malloc_warn(png_ptr, - (png_alloc_size_t)(sizeof (png_dsort))); - - if (t == NULL) - break; - - t->next = hash[d]; - t->left = (png_byte)i; - t->right = (png_byte)j; - hash[d] = t; - } - } - if (t == NULL) - break; - } - - if (t != NULL) - for (i = 0; i <= max_d; i++) - { - if (hash[i] != NULL) - { - png_dsortp p; - - for (p = hash[i]; p; p = p->next) - { - if ((int)png_ptr->index_to_palette[p->left] - < num_new_palette && - (int)png_ptr->index_to_palette[p->right] - < num_new_palette) - { - int j, next_j; - - if (num_new_palette & 0x01) - { - j = p->left; - next_j = p->right; - } - else - { - j = p->right; - next_j = p->left; - } - - num_new_palette--; - palette[png_ptr->index_to_palette[j]] - = palette[num_new_palette]; - if (full_quantize == 0) - { - int k; - - for (k = 0; k < num_palette; k++) - { - if (png_ptr->quantize_index[k] == - png_ptr->index_to_palette[j]) - png_ptr->quantize_index[k] = - png_ptr->index_to_palette[next_j]; - - if ((int)png_ptr->quantize_index[k] == - num_new_palette) - png_ptr->quantize_index[k] = - png_ptr->index_to_palette[j]; - } - } - - png_ptr->index_to_palette[png_ptr->palette_to_index - [num_new_palette]] = png_ptr->index_to_palette[j]; - - png_ptr->palette_to_index[png_ptr->index_to_palette[j]] - = png_ptr->palette_to_index[num_new_palette]; - - png_ptr->index_to_palette[j] = - (png_byte)num_new_palette; - - png_ptr->palette_to_index[num_new_palette] = - (png_byte)j; - } - if (num_new_palette <= maximum_colors) - break; - } - if (num_new_palette <= maximum_colors) - break; - } - } - - for (i = 0; i < 769; i++) - { - if (hash[i] != NULL) - { - png_dsortp p = hash[i]; - while (p) - { - t = p->next; - png_free(png_ptr, p); - p = t; - } - } - hash[i] = 0; - } - max_d += 96; - } - png_free(png_ptr, hash); - png_free(png_ptr, png_ptr->palette_to_index); - png_free(png_ptr, png_ptr->index_to_palette); - png_ptr->palette_to_index = NULL; - png_ptr->index_to_palette = NULL; - } - num_palette = maximum_colors; - } - if (png_ptr->palette == NULL) - { - png_ptr->palette = palette; - } - png_ptr->num_palette = (png_uint_16)num_palette; - - if (full_quantize != 0) - { - int i; - png_bytep distance; - int total_bits = PNG_QUANTIZE_RED_BITS + PNG_QUANTIZE_GREEN_BITS + - PNG_QUANTIZE_BLUE_BITS; - int num_red = (1 << PNG_QUANTIZE_RED_BITS); - int num_green = (1 << PNG_QUANTIZE_GREEN_BITS); - int num_blue = (1 << PNG_QUANTIZE_BLUE_BITS); - png_size_t num_entries = ((png_size_t)1 << total_bits); - - png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr, - (png_alloc_size_t)(num_entries * (sizeof (png_byte)))); - - distance = (png_bytep)png_malloc(png_ptr, (png_alloc_size_t)(num_entries * - (sizeof (png_byte)))); - - memset(distance, 0xff, num_entries * (sizeof (png_byte))); - - for (i = 0; i < num_palette; i++) - { - int ir, ig, ib; - int r = (palette[i].red >> (8 - PNG_QUANTIZE_RED_BITS)); - int g = (palette[i].green >> (8 - PNG_QUANTIZE_GREEN_BITS)); - int b = (palette[i].blue >> (8 - PNG_QUANTIZE_BLUE_BITS)); - - for (ir = 0; ir < num_red; ir++) - { - /* int dr = abs(ir - r); */ - int dr = ((ir > r) ? ir - r : r - ir); - int index_r = (ir << (PNG_QUANTIZE_BLUE_BITS + - PNG_QUANTIZE_GREEN_BITS)); - - for (ig = 0; ig < num_green; ig++) - { - /* int dg = abs(ig - g); */ - int dg = ((ig > g) ? ig - g : g - ig); - int dt = dr + dg; - int dm = ((dr > dg) ? dr : dg); - int index_g = index_r | (ig << PNG_QUANTIZE_BLUE_BITS); - - for (ib = 0; ib < num_blue; ib++) - { - int d_index = index_g | ib; - /* int db = abs(ib - b); */ - int db = ((ib > b) ? ib - b : b - ib); - int dmax = ((dm > db) ? dm : db); - int d = dmax + dt + db; - - if (d < (int)distance[d_index]) - { - distance[d_index] = (png_byte)d; - png_ptr->palette_lookup[d_index] = (png_byte)i; - } - } - } - } - } - - png_free(png_ptr, distance); - } -} -#endif /* READ_QUANTIZE */ - -#ifdef PNG_READ_GAMMA_SUPPORTED -void PNGFAPI -png_set_gamma_fixed(png_structrp png_ptr, png_fixed_point scrn_gamma, - png_fixed_point file_gamma) -{ - png_debug(1, "in png_set_gamma_fixed"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - /* New in libpng-1.5.4 - reserve particular negative values as flags. */ - scrn_gamma = translate_gamma_flags(png_ptr, scrn_gamma, 1/*screen*/); - file_gamma = translate_gamma_flags(png_ptr, file_gamma, 0/*file*/); - - /* Checking the gamma values for being >0 was added in 1.5.4 along with the - * premultiplied alpha support; this actually hides an undocumented feature - * of the previous implementation which allowed gamma processing to be - * disabled in background handling. There is no evidence (so far) that this - * was being used; however, png_set_background itself accepted and must still - * accept '0' for the gamma value it takes, because it isn't always used. - * - * Since this is an API change (albeit a very minor one that removes an - * undocumented API feature) the following checks were only enabled in - * libpng-1.6.0. - */ - if (file_gamma <= 0) - png_error(png_ptr, "invalid file gamma in png_set_gamma"); - - if (scrn_gamma <= 0) - png_error(png_ptr, "invalid screen gamma in png_set_gamma"); - - /* Set the gamma values unconditionally - this overrides the value in the PNG - * file if a gAMA chunk was present. png_set_alpha_mode provides a - * different, easier, way to default the file gamma. - */ - png_ptr->colorspace.gamma = file_gamma; - png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; - png_ptr->screen_gamma = scrn_gamma; -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_gamma(png_structrp png_ptr, double scrn_gamma, double file_gamma) -{ - png_set_gamma_fixed(png_ptr, convert_gamma_value(png_ptr, scrn_gamma), - convert_gamma_value(png_ptr, file_gamma)); -} -# endif /* FLOATING_POINT */ -#endif /* READ_GAMMA */ - -#ifdef PNG_READ_EXPAND_SUPPORTED -/* Expand paletted images to RGB, expand grayscale images of - * less than 8-bit depth to 8-bit depth, and expand tRNS chunks - * to alpha channels. - */ -void PNGAPI -png_set_expand(png_structrp png_ptr) -{ - png_debug(1, "in png_set_expand"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); -} - -/* GRR 19990627: the following three functions currently are identical - * to png_set_expand(). However, it is entirely reasonable that someone - * might wish to expand an indexed image to RGB but *not* expand a single, - * fully transparent palette entry to a full alpha channel--perhaps instead - * convert tRNS to the grayscale/RGB format (16-bit RGB value), or replace - * the transparent color with a particular RGB value, or drop tRNS entirely. - * IOW, a future version of the library may make the transformations flag - * a bit more fine-grained, with separate bits for each of these three - * functions. - * - * More to the point, these functions make it obvious what libpng will be - * doing, whereas "expand" can (and does) mean any number of things. - * - * GRP 20060307: In libpng-1.2.9, png_set_gray_1_2_4_to_8() was modified - * to expand only the sample depth but not to expand the tRNS to alpha - * and its name was changed to png_set_expand_gray_1_2_4_to_8(). - */ - -/* Expand paletted images to RGB. */ -void PNGAPI -png_set_palette_to_rgb(png_structrp png_ptr) -{ - png_debug(1, "in png_set_palette_to_rgb"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); -} - -/* Expand grayscale images of less than 8-bit depth to 8 bits. */ -void PNGAPI -png_set_expand_gray_1_2_4_to_8(png_structrp png_ptr) -{ - png_debug(1, "in png_set_expand_gray_1_2_4_to_8"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= PNG_EXPAND; -} - -/* Expand tRNS chunks to alpha channels. */ -void PNGAPI -png_set_tRNS_to_alpha(png_structrp png_ptr) -{ - png_debug(1, "in png_set_tRNS_to_alpha"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS); -} -#endif /* READ_EXPAND */ - -#ifdef PNG_READ_EXPAND_16_SUPPORTED -/* Expand to 16-bit channels, expand the tRNS chunk too (because otherwise - * it may not work correctly.) - */ -void PNGAPI -png_set_expand_16(png_structrp png_ptr) -{ - png_debug(1, "in png_set_expand_16"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - png_ptr->transformations |= (PNG_EXPAND_16 | PNG_EXPAND | PNG_EXPAND_tRNS); -} -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED -void PNGAPI -png_set_gray_to_rgb(png_structrp png_ptr) -{ - png_debug(1, "in png_set_gray_to_rgb"); - - if (png_rtran_ok(png_ptr, 0) == 0) - return; - - /* Because rgb must be 8 bits or more: */ - png_set_expand_gray_1_2_4_to_8(png_ptr); - png_ptr->transformations |= PNG_GRAY_TO_RGB; -} -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -void PNGFAPI -png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action, - png_fixed_point red, png_fixed_point green) -{ - png_debug(1, "in png_set_rgb_to_gray"); - - /* Need the IHDR here because of the check on color_type below. */ - /* TODO: fix this */ - if (png_rtran_ok(png_ptr, 1) == 0) - return; - - switch (error_action) - { - case PNG_ERROR_ACTION_NONE: - png_ptr->transformations |= PNG_RGB_TO_GRAY; - break; - - case PNG_ERROR_ACTION_WARN: - png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN; - break; - - case PNG_ERROR_ACTION_ERROR: - png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR; - break; - - default: - png_error(png_ptr, "invalid error action to rgb_to_gray"); - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) -#ifdef PNG_READ_EXPAND_SUPPORTED - png_ptr->transformations |= PNG_EXPAND; -#else - { - /* Make this an error in 1.6 because otherwise the application may assume - * that it just worked and get a memory overwrite. - */ - png_error(png_ptr, - "Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED"); - - /* png_ptr->transformations &= ~PNG_RGB_TO_GRAY; */ - } -#endif - { - if (red >= 0 && green >= 0 && red + green <= PNG_FP_1) - { - png_uint_16 red_int, green_int; - - /* NOTE: this calculation does not round, but this behavior is retained - * for consistency; the inaccuracy is very small. The code here always - * overwrites the coefficients, regardless of whether they have been - * defaulted or set already. - */ - red_int = (png_uint_16)(((png_uint_32)red*32768)/100000); - green_int = (png_uint_16)(((png_uint_32)green*32768)/100000); - - png_ptr->rgb_to_gray_red_coeff = red_int; - png_ptr->rgb_to_gray_green_coeff = green_int; - png_ptr->rgb_to_gray_coefficients_set = 1; - } - - else - { - if (red >= 0 && green >= 0) - png_app_warning(png_ptr, - "ignoring out of range rgb_to_gray coefficients"); - - /* Use the defaults, from the cHRM chunk if set, else the historical - * values which are close to the sRGB/HDTV/ITU-Rec 709 values. See - * png_do_rgb_to_gray for more discussion of the values. In this case - * the coefficients are not marked as 'set' and are not overwritten if - * something has already provided a default. - */ - if (png_ptr->rgb_to_gray_red_coeff == 0 && - png_ptr->rgb_to_gray_green_coeff == 0) - { - png_ptr->rgb_to_gray_red_coeff = 6968; - png_ptr->rgb_to_gray_green_coeff = 23434; - /* png_ptr->rgb_to_gray_blue_coeff = 2366; */ - } - } - } -} - -#ifdef PNG_FLOATING_POINT_SUPPORTED -/* Convert a RGB image to a grayscale of the same width. This allows us, - * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image. - */ - -void PNGAPI -png_set_rgb_to_gray(png_structrp png_ptr, int error_action, double red, - double green) -{ - png_set_rgb_to_gray_fixed(png_ptr, error_action, - png_fixed(png_ptr, red, "rgb to gray red coefficient"), - png_fixed(png_ptr, green, "rgb to gray green coefficient")); -} -#endif /* FLOATING POINT */ - -#endif /* RGB_TO_GRAY */ - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -void PNGAPI -png_set_read_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr - read_user_transform_fn) -{ - png_debug(1, "in png_set_read_user_transform_fn"); - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - png_ptr->transformations |= PNG_USER_TRANSFORM; - png_ptr->read_user_transform_fn = read_user_transform_fn; -#endif -} -#endif - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED -#ifdef PNG_READ_GAMMA_SUPPORTED -/* In the case of gamma transformations only do transformations on images where - * the [file] gamma and screen_gamma are not close reciprocals, otherwise it - * slows things down slightly, and also needlessly introduces small errors. - */ -static int /* PRIVATE */ -png_gamma_threshold(png_fixed_point screen_gamma, png_fixed_point file_gamma) -{ - /* PNG_GAMMA_THRESHOLD is the threshold for performing gamma - * correction as a difference of the overall transform from 1.0 - * - * We want to compare the threshold with s*f - 1, if we get - * overflow here it is because of wacky gamma values so we - * turn on processing anyway. - */ - png_fixed_point gtest; - return !png_muldiv(>est, screen_gamma, file_gamma, PNG_FP_1) || - png_gamma_significant(gtest); -} -#endif - -/* Initialize everything needed for the read. This includes modifying - * the palette. - */ - -/* For the moment 'png_init_palette_transformations' and - * 'png_init_rgb_transformations' only do some flag canceling optimizations. - * The intent is that these two routines should have palette or rgb operations - * extracted from 'png_init_read_transformations'. - */ -static void /* PRIVATE */ -png_init_palette_transformations(png_structrp png_ptr) -{ - /* Called to handle the (input) palette case. In png_do_read_transformations - * the first step is to expand the palette if requested, so this code must - * take care to only make changes that are invariant with respect to the - * palette expansion, or only do them if there is no expansion. - * - * STRIP_ALPHA has already been handled in the caller (by setting num_trans - * to 0.) - */ - int input_has_alpha = 0; - int input_has_transparency = 0; - - if (png_ptr->num_trans > 0) - { - int i; - - /* Ignore if all the entries are opaque (unlikely!) */ - for (i=0; inum_trans; ++i) - { - if (png_ptr->trans_alpha[i] == 255) - continue; - else if (png_ptr->trans_alpha[i] == 0) - input_has_transparency = 1; - else - { - input_has_transparency = 1; - input_has_alpha = 1; - break; - } - } - } - - /* If no alpha we can optimize. */ - if (input_has_alpha == 0) - { - /* Any alpha means background and associative alpha processing is - * required, however if the alpha is 0 or 1 throughout OPTIMIZE_ALPHA - * and ENCODE_ALPHA are irrelevant. - */ - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - - if (input_has_transparency == 0) - png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND); - } - -#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED) - /* png_set_background handling - deals with the complexity of whether the - * background color is in the file format or the screen format in the case - * where an 'expand' will happen. - */ - - /* The following code cannot be entered in the alpha pre-multiplication case - * because PNG_BACKGROUND_EXPAND is cancelled below. - */ - if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) != 0 && - (png_ptr->transformations & PNG_EXPAND) != 0) - { - { - png_ptr->background.red = - png_ptr->palette[png_ptr->background.index].red; - png_ptr->background.green = - png_ptr->palette[png_ptr->background.index].green; - png_ptr->background.blue = - png_ptr->palette[png_ptr->background.index].blue; - -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0) - { - if ((png_ptr->transformations & PNG_EXPAND_tRNS) == 0) - { - /* Invert the alpha channel (in tRNS) unless the pixels are - * going to be expanded, in which case leave it for later - */ - int i, istop = png_ptr->num_trans; - - for (i=0; itrans_alpha[i] = (png_byte)(255 - - png_ptr->trans_alpha[i]); - } - } -#endif /* READ_INVERT_ALPHA */ - } - } /* background expand and (therefore) no alpha association. */ -#endif /* READ_EXPAND && READ_BACKGROUND */ -} - -static void /* PRIVATE */ -png_init_rgb_transformations(png_structrp png_ptr) -{ - /* Added to libpng-1.5.4: check the color type to determine whether there - * is any alpha or transparency in the image and simply cancel the - * background and alpha mode stuff if there isn't. - */ - int input_has_alpha = (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0; - int input_has_transparency = png_ptr->num_trans > 0; - - /* If no alpha we can optimize. */ - if (input_has_alpha == 0) - { - /* Any alpha means background and associative alpha processing is - * required, however if the alpha is 0 or 1 throughout OPTIMIZE_ALPHA - * and ENCODE_ALPHA are irrelevant. - */ -# ifdef PNG_READ_ALPHA_MODE_SUPPORTED - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; -# endif - - if (input_has_transparency == 0) - png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND); - } - -#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED) - /* png_set_background handling - deals with the complexity of whether the - * background color is in the file format or the screen format in the case - * where an 'expand' will happen. - */ - - /* The following code cannot be entered in the alpha pre-multiplication case - * because PNG_BACKGROUND_EXPAND is cancelled below. - */ - if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) != 0 && - (png_ptr->transformations & PNG_EXPAND) != 0 && - (png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) - /* i.e., GRAY or GRAY_ALPHA */ - { - { - /* Expand background and tRNS chunks */ - int gray = png_ptr->background.gray; - int trans_gray = png_ptr->trans_color.gray; - - switch (png_ptr->bit_depth) - { - case 1: - gray *= 0xff; - trans_gray *= 0xff; - break; - - case 2: - gray *= 0x55; - trans_gray *= 0x55; - break; - - case 4: - gray *= 0x11; - trans_gray *= 0x11; - break; - - default: - - case 8: - /* FALLTHROUGH */ /* (Already 8 bits) */ - - case 16: - /* Already a full 16 bits */ - break; - } - - png_ptr->background.red = png_ptr->background.green = - png_ptr->background.blue = (png_uint_16)gray; - - if ((png_ptr->transformations & PNG_EXPAND_tRNS) == 0) - { - png_ptr->trans_color.red = png_ptr->trans_color.green = - png_ptr->trans_color.blue = (png_uint_16)trans_gray; - } - } - } /* background expand and (therefore) no alpha association. */ -#endif /* READ_EXPAND && READ_BACKGROUND */ -} - -void /* PRIVATE */ -png_init_read_transformations(png_structrp png_ptr) -{ - png_debug(1, "in png_init_read_transformations"); - - /* This internal function is called from png_read_start_row in pngrutil.c - * and it is called before the 'rowbytes' calculation is done, so the code - * in here can change or update the transformations flags. - * - * First do updates that do not depend on the details of the PNG image data - * being processed. - */ - -#ifdef PNG_READ_GAMMA_SUPPORTED - /* Prior to 1.5.4 these tests were performed from png_set_gamma, 1.5.4 adds - * png_set_alpha_mode and this is another source for a default file gamma so - * the test needs to be performed later - here. In addition prior to 1.5.4 - * the tests were repeated for the PALETTE color type here - this is no - * longer necessary (and doesn't seem to have been necessary before.) - */ - { - /* The following temporary indicates if overall gamma correction is - * required. - */ - int gamma_correction = 0; - - if (png_ptr->colorspace.gamma != 0) /* has been set */ - { - if (png_ptr->screen_gamma != 0) /* screen set too */ - gamma_correction = png_gamma_threshold(png_ptr->colorspace.gamma, - png_ptr->screen_gamma); - - else - /* Assume the output matches the input; a long time default behavior - * of libpng, although the standard has nothing to say about this. - */ - png_ptr->screen_gamma = png_reciprocal(png_ptr->colorspace.gamma); - } - - else if (png_ptr->screen_gamma != 0) - /* The converse - assume the file matches the screen, note that this - * perhaps undesireable default can (from 1.5.4) be changed by calling - * png_set_alpha_mode (even if the alpha handling mode isn't required - * or isn't changed from the default.) - */ - png_ptr->colorspace.gamma = png_reciprocal(png_ptr->screen_gamma); - - else /* neither are set */ - /* Just in case the following prevents any processing - file and screen - * are both assumed to be linear and there is no way to introduce a - * third gamma value other than png_set_background with 'UNIQUE', and, - * prior to 1.5.4 - */ - png_ptr->screen_gamma = png_ptr->colorspace.gamma = PNG_FP_1; - - /* We have a gamma value now. */ - png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA; - - /* Now turn the gamma transformation on or off as appropriate. Notice - * that PNG_GAMMA just refers to the file->screen correction. Alpha - * composition may independently cause gamma correction because it needs - * linear data (e.g. if the file has a gAMA chunk but the screen gamma - * hasn't been specified.) In any case this flag may get turned off in - * the code immediately below if the transform can be handled outside the - * row loop. - */ - if (gamma_correction != 0) - png_ptr->transformations |= PNG_GAMMA; - - else - png_ptr->transformations &= ~PNG_GAMMA; - } -#endif - - /* Certain transformations have the effect of preventing other - * transformations that happen afterward in png_do_read_transformations; - * resolve the interdependencies here. From the code of - * png_do_read_transformations the order is: - * - * 1) PNG_EXPAND (including PNG_EXPAND_tRNS) - * 2) PNG_STRIP_ALPHA (if no compose) - * 3) PNG_RGB_TO_GRAY - * 4) PNG_GRAY_TO_RGB iff !PNG_BACKGROUND_IS_GRAY - * 5) PNG_COMPOSE - * 6) PNG_GAMMA - * 7) PNG_STRIP_ALPHA (if compose) - * 8) PNG_ENCODE_ALPHA - * 9) PNG_SCALE_16_TO_8 - * 10) PNG_16_TO_8 - * 11) PNG_QUANTIZE (converts to palette) - * 12) PNG_EXPAND_16 - * 13) PNG_GRAY_TO_RGB iff PNG_BACKGROUND_IS_GRAY - * 14) PNG_INVERT_MONO - * 15) PNG_INVERT_ALPHA - * 16) PNG_SHIFT - * 17) PNG_PACK - * 18) PNG_BGR - * 19) PNG_PACKSWAP - * 20) PNG_FILLER (includes PNG_ADD_ALPHA) - * 21) PNG_SWAP_ALPHA - * 22) PNG_SWAP_BYTES - * 23) PNG_USER_TRANSFORM [must be last] - */ -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0 && - (png_ptr->transformations & PNG_COMPOSE) == 0) - { - /* Stripping the alpha channel happens immediately after the 'expand' - * transformations, before all other transformation, so it cancels out - * the alpha handling. It has the side effect negating the effect of - * PNG_EXPAND_tRNS too: - */ - png_ptr->transformations &= ~(PNG_BACKGROUND_EXPAND | PNG_ENCODE_ALPHA | - PNG_EXPAND_tRNS); - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - - /* Kill the tRNS chunk itself too. Prior to 1.5.4 this did not happen - * so transparency information would remain just so long as it wasn't - * expanded. This produces unexpected API changes if the set of things - * that do PNG_EXPAND_tRNS changes (perfectly possible given the - * documentation - which says ask for what you want, accept what you - * get.) This makes the behavior consistent from 1.5.4: - */ - png_ptr->num_trans = 0; - } -#endif /* STRIP_ALPHA supported, no COMPOSE */ - -#ifdef PNG_READ_ALPHA_MODE_SUPPORTED - /* If the screen gamma is about 1.0 then the OPTIMIZE_ALPHA and ENCODE_ALPHA - * settings will have no effect. - */ - if (png_gamma_significant(png_ptr->screen_gamma) == 0) - { - png_ptr->transformations &= ~PNG_ENCODE_ALPHA; - png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA; - } -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - /* Make sure the coefficients for the rgb to gray conversion are set - * appropriately. - */ - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) - png_colorspace_set_rgb_coefficients(png_ptr); -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED -#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED) - /* Detect gray background and attempt to enable optimization for - * gray --> RGB case. - * - * Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or - * RGB_ALPHA (in which case need_expand is superfluous anyway), the - * background color might actually be gray yet not be flagged as such. - * This is not a problem for the current code, which uses - * PNG_BACKGROUND_IS_GRAY only to decide when to do the - * png_do_gray_to_rgb() transformation. - * - * TODO: this code needs to be revised to avoid the complexity and - * interdependencies. The color type of the background should be recorded in - * png_set_background, along with the bit depth, then the code has a record - * of exactly what color space the background is currently in. - */ - if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) != 0) - { - /* PNG_BACKGROUND_EXPAND: the background is in the file color space, so if - * the file was grayscale the background value is gray. - */ - if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) - png_ptr->mode |= PNG_BACKGROUND_IS_GRAY; - } - - else if ((png_ptr->transformations & PNG_COMPOSE) != 0) - { - /* PNG_COMPOSE: png_set_background was called with need_expand false, - * so the color is in the color space of the output or png_set_alpha_mode - * was called and the color is black. Ignore RGB_TO_GRAY because that - * happens before GRAY_TO_RGB. - */ - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) - { - if (png_ptr->background.red == png_ptr->background.green && - png_ptr->background.red == png_ptr->background.blue) - { - png_ptr->mode |= PNG_BACKGROUND_IS_GRAY; - png_ptr->background.gray = png_ptr->background.red; - } - } - } -#endif /* READ_EXPAND && READ_BACKGROUND */ -#endif /* READ_GRAY_TO_RGB */ - - /* For indexed PNG data (PNG_COLOR_TYPE_PALETTE) many of the transformations - * can be performed directly on the palette, and some (such as rgb to gray) - * can be optimized inside the palette. This is particularly true of the - * composite (background and alpha) stuff, which can be pretty much all done - * in the palette even if the result is expanded to RGB or gray afterward. - * - * NOTE: this is Not Yet Implemented, the code behaves as in 1.5.1 and - * earlier and the palette stuff is actually handled on the first row. This - * leads to the reported bug that the palette returned by png_get_PLTE is not - * updated. - */ - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - png_init_palette_transformations(png_ptr); - - else - png_init_rgb_transformations(png_ptr); - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \ - defined(PNG_READ_EXPAND_16_SUPPORTED) - if ((png_ptr->transformations & PNG_EXPAND_16) != 0 && - (png_ptr->transformations & PNG_COMPOSE) != 0 && - (png_ptr->transformations & PNG_BACKGROUND_EXPAND) == 0 && - png_ptr->bit_depth != 16) - { - /* TODO: fix this. Because the expand_16 operation is after the compose - * handling the background color must be 8, not 16, bits deep, but the - * application will supply a 16-bit value so reduce it here. - * - * The PNG_BACKGROUND_EXPAND code above does not expand to 16 bits at - * present, so that case is ok (until do_expand_16 is moved.) - * - * NOTE: this discards the low 16 bits of the user supplied background - * color, but until expand_16 works properly there is no choice! - */ -# define CHOP(x) (x)=((png_uint_16)PNG_DIV257(x)) - CHOP(png_ptr->background.red); - CHOP(png_ptr->background.green); - CHOP(png_ptr->background.blue); - CHOP(png_ptr->background.gray); -# undef CHOP - } -#endif /* READ_BACKGROUND && READ_EXPAND_16 */ - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \ - (defined(PNG_READ_SCALE_16_TO_8_SUPPORTED) || \ - defined(PNG_READ_STRIP_16_TO_8_SUPPORTED)) - if ((png_ptr->transformations & (PNG_16_TO_8|PNG_SCALE_16_TO_8)) != 0 && - (png_ptr->transformations & PNG_COMPOSE) != 0 && - (png_ptr->transformations & PNG_BACKGROUND_EXPAND) == 0 && - png_ptr->bit_depth == 16) - { - /* On the other hand, if a 16-bit file is to be reduced to 8-bits per - * component this will also happen after PNG_COMPOSE and so the background - * color must be pre-expanded here. - * - * TODO: fix this too. - */ - png_ptr->background.red = (png_uint_16)(png_ptr->background.red * 257); - png_ptr->background.green = - (png_uint_16)(png_ptr->background.green * 257); - png_ptr->background.blue = (png_uint_16)(png_ptr->background.blue * 257); - png_ptr->background.gray = (png_uint_16)(png_ptr->background.gray * 257); - } -#endif - - /* NOTE: below 'PNG_READ_ALPHA_MODE_SUPPORTED' is presumed to also enable the - * background support (see the comments in scripts/pnglibconf.dfa), this - * allows pre-multiplication of the alpha channel to be implemented as - * compositing on black. This is probably sub-optimal and has been done in - * 1.5.4 betas simply to enable external critique and testing (i.e. to - * implement the new API quickly, without lots of internal changes.) - */ - -#ifdef PNG_READ_GAMMA_SUPPORTED -# ifdef PNG_READ_BACKGROUND_SUPPORTED - /* Includes ALPHA_MODE */ - png_ptr->background_1 = png_ptr->background; -# endif - - /* This needs to change - in the palette image case a whole set of tables are - * built when it would be quicker to just calculate the correct value for - * each palette entry directly. Also, the test is too tricky - why check - * PNG_RGB_TO_GRAY if PNG_GAMMA is not set? The answer seems to be that - * PNG_GAMMA is cancelled even if the gamma is known? The test excludes the - * PNG_COMPOSE case, so apparently if there is no *overall* gamma correction - * the gamma tables will not be built even if composition is required on a - * gamma encoded value. - * - * In 1.5.4 this is addressed below by an additional check on the individual - * file gamma - if it is not 1.0 both RGB_TO_GRAY and COMPOSE need the - * tables. - */ - if ((png_ptr->transformations & PNG_GAMMA) != 0 || - ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0 && - (png_gamma_significant(png_ptr->colorspace.gamma) != 0 || - png_gamma_significant(png_ptr->screen_gamma) != 0)) || - ((png_ptr->transformations & PNG_COMPOSE) != 0 && - (png_gamma_significant(png_ptr->colorspace.gamma) != 0 || - png_gamma_significant(png_ptr->screen_gamma) != 0 -# ifdef PNG_READ_BACKGROUND_SUPPORTED - || (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_UNIQUE && - png_gamma_significant(png_ptr->background_gamma) != 0) -# endif - )) || ((png_ptr->transformations & PNG_ENCODE_ALPHA) != 0 && - png_gamma_significant(png_ptr->screen_gamma) != 0)) - { - png_build_gamma_table(png_ptr, png_ptr->bit_depth); - -#ifdef PNG_READ_BACKGROUND_SUPPORTED - if ((png_ptr->transformations & PNG_COMPOSE) != 0) - { - /* Issue a warning about this combination: because RGB_TO_GRAY is - * optimized to do the gamma transform if present yet do_background has - * to do the same thing if both options are set a - * double-gamma-correction happens. This is true in all versions of - * libpng to date. - */ - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) - png_warning(png_ptr, - "libpng does not support gamma+background+rgb_to_gray"); - - if ((png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) != 0) - { - /* We don't get to here unless there is a tRNS chunk with non-opaque - * entries - see the checking code at the start of this function. - */ - png_color back, back_1; - png_colorp palette = png_ptr->palette; - int num_palette = png_ptr->num_palette; - int i; - if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE) - { - - back.red = png_ptr->gamma_table[png_ptr->background.red]; - back.green = png_ptr->gamma_table[png_ptr->background.green]; - back.blue = png_ptr->gamma_table[png_ptr->background.blue]; - - back_1.red = png_ptr->gamma_to_1[png_ptr->background.red]; - back_1.green = png_ptr->gamma_to_1[png_ptr->background.green]; - back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue]; - } - else - { - png_fixed_point g, gs; - - switch (png_ptr->background_gamma_type) - { - case PNG_BACKGROUND_GAMMA_SCREEN: - g = (png_ptr->screen_gamma); - gs = PNG_FP_1; - break; - - case PNG_BACKGROUND_GAMMA_FILE: - g = png_reciprocal(png_ptr->colorspace.gamma); - gs = png_reciprocal2(png_ptr->colorspace.gamma, - png_ptr->screen_gamma); - break; - - case PNG_BACKGROUND_GAMMA_UNIQUE: - g = png_reciprocal(png_ptr->background_gamma); - gs = png_reciprocal2(png_ptr->background_gamma, - png_ptr->screen_gamma); - break; - default: - g = PNG_FP_1; /* back_1 */ - gs = PNG_FP_1; /* back */ - break; - } - - if (png_gamma_significant(gs) != 0) - { - back.red = png_gamma_8bit_correct(png_ptr->background.red, - gs); - back.green = png_gamma_8bit_correct(png_ptr->background.green, - gs); - back.blue = png_gamma_8bit_correct(png_ptr->background.blue, - gs); - } - - else - { - back.red = (png_byte)png_ptr->background.red; - back.green = (png_byte)png_ptr->background.green; - back.blue = (png_byte)png_ptr->background.blue; - } - - if (png_gamma_significant(g) != 0) - { - back_1.red = png_gamma_8bit_correct(png_ptr->background.red, - g); - back_1.green = png_gamma_8bit_correct( - png_ptr->background.green, g); - back_1.blue = png_gamma_8bit_correct(png_ptr->background.blue, - g); - } - - else - { - back_1.red = (png_byte)png_ptr->background.red; - back_1.green = (png_byte)png_ptr->background.green; - back_1.blue = (png_byte)png_ptr->background.blue; - } - } - - for (i = 0; i < num_palette; i++) - { - if (i < (int)png_ptr->num_trans && - png_ptr->trans_alpha[i] != 0xff) - { - if (png_ptr->trans_alpha[i] == 0) - { - palette[i] = back; - } - else /* if (png_ptr->trans_alpha[i] != 0xff) */ - { - png_byte v, w; - - v = png_ptr->gamma_to_1[palette[i].red]; - png_composite(w, v, png_ptr->trans_alpha[i], back_1.red); - palette[i].red = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[palette[i].green]; - png_composite(w, v, png_ptr->trans_alpha[i], back_1.green); - palette[i].green = png_ptr->gamma_from_1[w]; - - v = png_ptr->gamma_to_1[palette[i].blue]; - png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue); - palette[i].blue = png_ptr->gamma_from_1[w]; - } - } - else - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - } - - /* Prevent the transformations being done again. - * - * NOTE: this is highly dubious; it removes the transformations in - * place. This seems inconsistent with the general treatment of the - * transformations elsewhere. - */ - png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA); - } /* color_type == PNG_COLOR_TYPE_PALETTE */ - - /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */ - else /* color_type != PNG_COLOR_TYPE_PALETTE */ - { - int gs_sig, g_sig; - png_fixed_point g = PNG_FP_1; /* Correction to linear */ - png_fixed_point gs = PNG_FP_1; /* Correction to screen */ - - switch (png_ptr->background_gamma_type) - { - case PNG_BACKGROUND_GAMMA_SCREEN: - g = png_ptr->screen_gamma; - /* gs = PNG_FP_1; */ - break; - - case PNG_BACKGROUND_GAMMA_FILE: - g = png_reciprocal(png_ptr->colorspace.gamma); - gs = png_reciprocal2(png_ptr->colorspace.gamma, - png_ptr->screen_gamma); - break; - - case PNG_BACKGROUND_GAMMA_UNIQUE: - g = png_reciprocal(png_ptr->background_gamma); - gs = png_reciprocal2(png_ptr->background_gamma, - png_ptr->screen_gamma); - break; - - default: - png_error(png_ptr, "invalid background gamma type"); - } - - g_sig = png_gamma_significant(g); - gs_sig = png_gamma_significant(gs); - - if (g_sig != 0) - png_ptr->background_1.gray = png_gamma_correct(png_ptr, - png_ptr->background.gray, g); - - if (gs_sig != 0) - png_ptr->background.gray = png_gamma_correct(png_ptr, - png_ptr->background.gray, gs); - - if ((png_ptr->background.red != png_ptr->background.green) || - (png_ptr->background.red != png_ptr->background.blue) || - (png_ptr->background.red != png_ptr->background.gray)) - { - /* RGB or RGBA with color background */ - if (g_sig != 0) - { - png_ptr->background_1.red = png_gamma_correct(png_ptr, - png_ptr->background.red, g); - - png_ptr->background_1.green = png_gamma_correct(png_ptr, - png_ptr->background.green, g); - - png_ptr->background_1.blue = png_gamma_correct(png_ptr, - png_ptr->background.blue, g); - } - - if (gs_sig != 0) - { - png_ptr->background.red = png_gamma_correct(png_ptr, - png_ptr->background.red, gs); - - png_ptr->background.green = png_gamma_correct(png_ptr, - png_ptr->background.green, gs); - - png_ptr->background.blue = png_gamma_correct(png_ptr, - png_ptr->background.blue, gs); - } - } - - else - { - /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */ - png_ptr->background_1.red = png_ptr->background_1.green - = png_ptr->background_1.blue = png_ptr->background_1.gray; - - png_ptr->background.red = png_ptr->background.green - = png_ptr->background.blue = png_ptr->background.gray; - } - - /* The background is now in screen gamma: */ - png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_SCREEN; - } /* color_type != PNG_COLOR_TYPE_PALETTE */ - }/* png_ptr->transformations & PNG_BACKGROUND */ - - else - /* Transformation does not include PNG_BACKGROUND */ -#endif /* READ_BACKGROUND */ - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - /* RGB_TO_GRAY needs to have non-gamma-corrected values! */ - && ((png_ptr->transformations & PNG_EXPAND) == 0 || - (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0) -#endif - ) - { - png_colorp palette = png_ptr->palette; - int num_palette = png_ptr->num_palette; - int i; - - /* NOTE: there are other transformations that should probably be in - * here too. - */ - for (i = 0; i < num_palette; i++) - { - palette[i].red = png_ptr->gamma_table[palette[i].red]; - palette[i].green = png_ptr->gamma_table[palette[i].green]; - palette[i].blue = png_ptr->gamma_table[palette[i].blue]; - } - - /* Done the gamma correction. */ - png_ptr->transformations &= ~PNG_GAMMA; - } /* color_type == PALETTE && !PNG_BACKGROUND transformation */ - } -#ifdef PNG_READ_BACKGROUND_SUPPORTED - else -#endif -#endif /* READ_GAMMA */ - -#ifdef PNG_READ_BACKGROUND_SUPPORTED - /* No GAMMA transformation (see the hanging else 4 lines above) */ - if ((png_ptr->transformations & PNG_COMPOSE) != 0 && - (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)) - { - int i; - int istop = (int)png_ptr->num_trans; - png_color back; - png_colorp palette = png_ptr->palette; - - back.red = (png_byte)png_ptr->background.red; - back.green = (png_byte)png_ptr->background.green; - back.blue = (png_byte)png_ptr->background.blue; - - for (i = 0; i < istop; i++) - { - if (png_ptr->trans_alpha[i] == 0) - { - palette[i] = back; - } - - else if (png_ptr->trans_alpha[i] != 0xff) - { - /* The png_composite() macro is defined in png.h */ - png_composite(palette[i].red, palette[i].red, - png_ptr->trans_alpha[i], back.red); - - png_composite(palette[i].green, palette[i].green, - png_ptr->trans_alpha[i], back.green); - - png_composite(palette[i].blue, palette[i].blue, - png_ptr->trans_alpha[i], back.blue); - } - } - - png_ptr->transformations &= ~PNG_COMPOSE; - } -#endif /* READ_BACKGROUND */ - -#ifdef PNG_READ_SHIFT_SUPPORTED - if ((png_ptr->transformations & PNG_SHIFT) != 0 && - (png_ptr->transformations & PNG_EXPAND) == 0 && - (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)) - { - int i; - int istop = png_ptr->num_palette; - int shift = 8 - png_ptr->sig_bit.red; - - png_ptr->transformations &= ~PNG_SHIFT; - - /* significant bits can be in the range 1 to 7 for a meaninful result, if - * the number of significant bits is 0 then no shift is done (this is an - * error condition which is silently ignored.) - */ - if (shift > 0 && shift < 8) - for (i=0; ipalette[i].red; - - component >>= shift; - png_ptr->palette[i].red = (png_byte)component; - } - - shift = 8 - png_ptr->sig_bit.green; - if (shift > 0 && shift < 8) - for (i=0; ipalette[i].green; - - component >>= shift; - png_ptr->palette[i].green = (png_byte)component; - } - - shift = 8 - png_ptr->sig_bit.blue; - if (shift > 0 && shift < 8) - for (i=0; ipalette[i].blue; - - component >>= shift; - png_ptr->palette[i].blue = (png_byte)component; - } - } -#endif /* READ_SHIFT */ -} - -/* Modify the info structure to reflect the transformations. The - * info should be updated so a PNG file could be written with it, - * assuming the transformations result in valid PNG data. - */ -void /* PRIVATE */ -png_read_transform_info(png_structrp png_ptr, png_inforp info_ptr) -{ - png_debug(1, "in png_read_transform_info"); - -#ifdef PNG_READ_EXPAND_SUPPORTED - if ((png_ptr->transformations & PNG_EXPAND) != 0) - { - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - /* This check must match what actually happens in - * png_do_expand_palette; if it ever checks the tRNS chunk to see if - * it is all opaque we must do the same (at present it does not.) - */ - if (png_ptr->num_trans > 0) - info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA; - - else - info_ptr->color_type = PNG_COLOR_TYPE_RGB; - - info_ptr->bit_depth = 8; - info_ptr->num_trans = 0; - - if (png_ptr->palette == NULL) - png_error (png_ptr, "Palette is NULL in indexed image"); - } - else - { - if (png_ptr->num_trans != 0) - { - if ((png_ptr->transformations & PNG_EXPAND_tRNS) != 0) - info_ptr->color_type |= PNG_COLOR_MASK_ALPHA; - } - if (info_ptr->bit_depth < 8) - info_ptr->bit_depth = 8; - - info_ptr->num_trans = 0; - } - } -#endif - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) - /* The following is almost certainly wrong unless the background value is in - * the screen space! - */ - if ((png_ptr->transformations & PNG_COMPOSE) != 0) - info_ptr->background = png_ptr->background; -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED - /* The following used to be conditional on PNG_GAMMA (prior to 1.5.4), - * however it seems that the code in png_init_read_transformations, which has - * been called before this from png_read_update_info->png_read_start_row - * sometimes does the gamma transform and cancels the flag. - * - * TODO: this looks wrong; the info_ptr should end up with a gamma equal to - * the screen_gamma value. The following probably results in weirdness if - * the info_ptr is used by the app after the rows have been read. - */ - info_ptr->colorspace.gamma = png_ptr->colorspace.gamma; -#endif - - if (info_ptr->bit_depth == 16) - { -# ifdef PNG_READ_16BIT_SUPPORTED -# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED - if ((png_ptr->transformations & PNG_SCALE_16_TO_8) != 0) - info_ptr->bit_depth = 8; -# endif - -# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED - if ((png_ptr->transformations & PNG_16_TO_8) != 0) - info_ptr->bit_depth = 8; -# endif - -# else - /* No 16-bit support: force chopping 16-bit input down to 8, in this case - * the app program can chose if both APIs are available by setting the - * correct scaling to use. - */ -# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED - /* For compatibility with previous versions use the strip method by - * default. This code works because if PNG_SCALE_16_TO_8 is already - * set the code below will do that in preference to the chop. - */ - png_ptr->transformations |= PNG_16_TO_8; - info_ptr->bit_depth = 8; -# else - -# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED - png_ptr->transformations |= PNG_SCALE_16_TO_8; - info_ptr->bit_depth = 8; -# else - - CONFIGURATION ERROR: you must enable at least one 16 to 8 method -# endif -# endif -#endif /* !READ_16BIT */ - } - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) - info_ptr->color_type = (png_byte)(info_ptr->color_type | - PNG_COLOR_MASK_COLOR); -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) - info_ptr->color_type = (png_byte)(info_ptr->color_type & - ~PNG_COLOR_MASK_COLOR); -#endif - -#ifdef PNG_READ_QUANTIZE_SUPPORTED - if ((png_ptr->transformations & PNG_QUANTIZE) != 0) - { - if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) || - (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) && - png_ptr->palette_lookup != 0 && info_ptr->bit_depth == 8) - { - info_ptr->color_type = PNG_COLOR_TYPE_PALETTE; - } - } -#endif - -#ifdef PNG_READ_EXPAND_16_SUPPORTED - if ((png_ptr->transformations & PNG_EXPAND_16) != 0 && - info_ptr->bit_depth == 8 && - info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) - { - info_ptr->bit_depth = 16; - } -#endif - -#ifdef PNG_READ_PACK_SUPPORTED - if ((png_ptr->transformations & PNG_PACK) != 0 && - (info_ptr->bit_depth < 8)) - info_ptr->bit_depth = 8; -#endif - - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - info_ptr->channels = 1; - - else if ((info_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - info_ptr->channels = 3; - - else - info_ptr->channels = 1; - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0) - { - info_ptr->color_type = (png_byte)(info_ptr->color_type & - ~PNG_COLOR_MASK_ALPHA); - info_ptr->num_trans = 0; - } -#endif - - if ((info_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0) - info_ptr->channels++; - -#ifdef PNG_READ_FILLER_SUPPORTED - /* STRIP_ALPHA and FILLER allowed: MASK_ALPHA bit stripped above */ - if ((png_ptr->transformations & PNG_FILLER) != 0 && - (info_ptr->color_type == PNG_COLOR_TYPE_RGB || - info_ptr->color_type == PNG_COLOR_TYPE_GRAY)) - { - info_ptr->channels++; - /* If adding a true alpha channel not just filler */ - if ((png_ptr->transformations & PNG_ADD_ALPHA) != 0) - info_ptr->color_type |= PNG_COLOR_MASK_ALPHA; - } -#endif - -#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \ -defined(PNG_READ_USER_TRANSFORM_SUPPORTED) - if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) - { - if (png_ptr->user_transform_depth != 0) - info_ptr->bit_depth = png_ptr->user_transform_depth; - - if (png_ptr->user_transform_channels != 0) - info_ptr->channels = png_ptr->user_transform_channels; - } -#endif - - info_ptr->pixel_depth = (png_byte)(info_ptr->channels * - info_ptr->bit_depth); - - info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width); - - /* Adding in 1.5.4: cache the above value in png_struct so that we can later - * check in png_rowbytes that the user buffer won't get overwritten. Note - * that the field is not always set - if png_read_update_info isn't called - * the application has to either not do any transforms or get the calculation - * right itself. - */ - png_ptr->info_rowbytes = info_ptr->rowbytes; - -#ifndef PNG_READ_EXPAND_SUPPORTED - if (png_ptr != NULL) - return; -#endif -} - -#ifdef PNG_READ_PACK_SUPPORTED -/* Unpack pixels of 1, 2, or 4 bits per pixel into 1 byte per pixel, - * without changing the actual values. Thus, if you had a row with - * a bit depth of 1, you would end up with bytes that only contained - * the numbers 0 or 1. If you would rather they contain 0 and 255, use - * png_do_shift() after this. - */ -static void -png_do_unpack(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_unpack"); - - if (row_info->bit_depth < 8) - { - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - switch (row_info->bit_depth) - { - case 1: - { - png_bytep sp = row + (png_size_t)((row_width - 1) >> 3); - png_bytep dp = row + (png_size_t)row_width - 1; - png_uint_32 shift = 7U - ((row_width + 7U) & 0x07); - for (i = 0; i < row_width; i++) - { - *dp = (png_byte)((*sp >> shift) & 0x01); - - if (shift == 7) - { - shift = 0; - sp--; - } - - else - shift++; - - dp--; - } - break; - } - - case 2: - { - - png_bytep sp = row + (png_size_t)((row_width - 1) >> 2); - png_bytep dp = row + (png_size_t)row_width - 1; - png_uint_32 shift = ((3U - ((row_width + 3U) & 0x03)) << 1); - for (i = 0; i < row_width; i++) - { - *dp = (png_byte)((*sp >> shift) & 0x03); - - if (shift == 6) - { - shift = 0; - sp--; - } - - else - shift += 2; - - dp--; - } - break; - } - - case 4: - { - png_bytep sp = row + (png_size_t)((row_width - 1) >> 1); - png_bytep dp = row + (png_size_t)row_width - 1; - png_uint_32 shift = ((1U - ((row_width + 1U) & 0x01)) << 2); - for (i = 0; i < row_width; i++) - { - *dp = (png_byte)((*sp >> shift) & 0x0f); - - if (shift == 4) - { - shift = 0; - sp--; - } - - else - shift = 4; - - dp--; - } - break; - } - - default: - break; - } - row_info->bit_depth = 8; - row_info->pixel_depth = (png_byte)(8 * row_info->channels); - row_info->rowbytes = row_width * row_info->channels; - } -} -#endif - -#ifdef PNG_READ_SHIFT_SUPPORTED -/* Reverse the effects of png_do_shift. This routine merely shifts the - * pixels back to their significant bits values. Thus, if you have - * a row of bit depth 8, but only 5 are significant, this will shift - * the values back to 0 through 31. - */ -static void -png_do_unshift(png_row_infop row_info, png_bytep row, - png_const_color_8p sig_bits) -{ - int color_type; - - png_debug(1, "in png_do_unshift"); - - /* The palette case has already been handled in the _init routine. */ - color_type = row_info->color_type; - - if (color_type != PNG_COLOR_TYPE_PALETTE) - { - int shift[4]; - int channels = 0; - int bit_depth = row_info->bit_depth; - - if ((color_type & PNG_COLOR_MASK_COLOR) != 0) - { - shift[channels++] = bit_depth - sig_bits->red; - shift[channels++] = bit_depth - sig_bits->green; - shift[channels++] = bit_depth - sig_bits->blue; - } - - else - { - shift[channels++] = bit_depth - sig_bits->gray; - } - - if ((color_type & PNG_COLOR_MASK_ALPHA) != 0) - { - shift[channels++] = bit_depth - sig_bits->alpha; - } - - { - int c, have_shift; - - for (c = have_shift = 0; c < channels; ++c) - { - /* A shift of more than the bit depth is an error condition but it - * gets ignored here. - */ - if (shift[c] <= 0 || shift[c] >= bit_depth) - shift[c] = 0; - - else - have_shift = 1; - } - - if (have_shift == 0) - return; - } - - switch (bit_depth) - { - default: - /* Must be 1bpp gray: should not be here! */ - /* NOTREACHED */ - break; - - case 2: - /* Must be 2bpp gray */ - /* assert(channels == 1 && shift[0] == 1) */ - { - png_bytep bp = row; - png_bytep bp_end = bp + row_info->rowbytes; - - while (bp < bp_end) - { - int b = (*bp >> 1) & 0x55; - *bp++ = (png_byte)b; - } - break; - } - - case 4: - /* Must be 4bpp gray */ - /* assert(channels == 1) */ - { - png_bytep bp = row; - png_bytep bp_end = bp + row_info->rowbytes; - int gray_shift = shift[0]; - int mask = 0xf >> gray_shift; - - mask |= mask << 4; - - while (bp < bp_end) - { - int b = (*bp >> gray_shift) & mask; - *bp++ = (png_byte)b; - } - break; - } - - case 8: - /* Single byte components, G, GA, RGB, RGBA */ - { - png_bytep bp = row; - png_bytep bp_end = bp + row_info->rowbytes; - int channel = 0; - - while (bp < bp_end) - { - int b = *bp >> shift[channel]; - if (++channel >= channels) - channel = 0; - *bp++ = (png_byte)b; - } - break; - } - -#ifdef PNG_READ_16BIT_SUPPORTED - case 16: - /* Double byte components, G, GA, RGB, RGBA */ - { - png_bytep bp = row; - png_bytep bp_end = bp + row_info->rowbytes; - int channel = 0; - - while (bp < bp_end) - { - int value = (bp[0] << 8) + bp[1]; - - value >>= shift[channel]; - if (++channel >= channels) - channel = 0; - *bp++ = (png_byte)(value >> 8); - *bp++ = (png_byte)value; - } - break; - } -#endif - } - } -} -#endif - -#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED -/* Scale rows of bit depth 16 down to 8 accurately */ -static void -png_do_scale_16_to_8(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_scale_16_to_8"); - - if (row_info->bit_depth == 16) - { - png_bytep sp = row; /* source */ - png_bytep dp = row; /* destination */ - png_bytep ep = sp + row_info->rowbytes; /* end+1 */ - - while (sp < ep) - { - /* The input is an array of 16-bit components, these must be scaled to - * 8 bits each. For a 16-bit value V the required value (from the PNG - * specification) is: - * - * (V * 255) / 65535 - * - * This reduces to round(V / 257), or floor((V + 128.5)/257) - * - * Represent V as the two byte value vhi.vlo. Make a guess that the - * result is the top byte of V, vhi, then the correction to this value - * is: - * - * error = floor(((V-vhi.vhi) + 128.5) / 257) - * = floor(((vlo-vhi) + 128.5) / 257) - * - * This can be approximated using integer arithmetic (and a signed - * shift): - * - * error = (vlo-vhi+128) >> 8; - * - * The approximate differs from the exact answer only when (vlo-vhi) is - * 128; it then gives a correction of +1 when the exact correction is - * 0. This gives 128 errors. The exact answer (correct for all 16-bit - * input values) is: - * - * error = (vlo-vhi+128)*65535 >> 24; - * - * An alternative arithmetic calculation which also gives no errors is: - * - * (V * 255 + 32895) >> 16 - */ - - png_int_32 tmp = *sp++; /* must be signed! */ - tmp += (((int)*sp++ - tmp + 128) * 65535) >> 24; - *dp++ = (png_byte)tmp; - } - - row_info->bit_depth = 8; - row_info->pixel_depth = (png_byte)(8 * row_info->channels); - row_info->rowbytes = row_info->width * row_info->channels; - } -} -#endif - -#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED -static void -/* Simply discard the low byte. This was the default behavior prior - * to libpng-1.5.4. - */ -png_do_chop(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_chop"); - - if (row_info->bit_depth == 16) - { - png_bytep sp = row; /* source */ - png_bytep dp = row; /* destination */ - png_bytep ep = sp + row_info->rowbytes; /* end+1 */ - - while (sp < ep) - { - *dp++ = *sp; - sp += 2; /* skip low byte */ - } - - row_info->bit_depth = 8; - row_info->pixel_depth = (png_byte)(8 * row_info->channels); - row_info->rowbytes = row_info->width * row_info->channels; - } -} -#endif - -#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED -static void -png_do_read_swap_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_read_swap_alpha"); - - { - png_uint_32 row_width = row_info->width; - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - /* This converts from RGBA to ARGB */ - if (row_info->bit_depth == 8) - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save; - } - } - -#ifdef PNG_READ_16BIT_SUPPORTED - /* This converts from RRGGBBAA to AARRGGBB */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save[2]; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save[0] = *(--sp); - save[1] = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save[0]; - *(--dp) = save[1]; - } - } -#endif - } - - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - /* This converts from GA to AG */ - if (row_info->bit_depth == 8) - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save; - } - } - -#ifdef PNG_READ_16BIT_SUPPORTED - /* This converts from GGAA to AAGG */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_byte save[2]; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - save[0] = *(--sp); - save[1] = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = save[0]; - *(--dp) = save[1]; - } - } -#endif - } - } -} -#endif - -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED -static void -png_do_read_invert_alpha(png_row_infop row_info, png_bytep row) -{ - png_uint_32 row_width; - png_debug(1, "in png_do_read_invert_alpha"); - - row_width = row_info->width; - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This inverts the alpha channel in RGBA */ - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - -/* This does nothing: - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - We can replace it with: -*/ - sp-=3; - dp=sp; - } - } - -#ifdef PNG_READ_16BIT_SUPPORTED - /* This inverts the alpha channel in RRGGBBAA */ - else - { - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - *(--dp) = (png_byte)(255 - *(--sp)); - -/* This does nothing: - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - We can replace it with: -*/ - sp-=6; - dp=sp; - } - } -#endif - } - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This inverts the alpha channel in GA */ - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - *(--dp) = *(--sp); - } - } - -#ifdef PNG_READ_16BIT_SUPPORTED - else - { - /* This inverts the alpha channel in GGAA */ - png_bytep sp = row + row_info->rowbytes; - png_bytep dp = sp; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - *(--dp) = (png_byte)(255 - *(--sp)); - *(--dp) = (png_byte)(255 - *(--sp)); -/* - *(--dp) = *(--sp); - *(--dp) = *(--sp); -*/ - sp-=2; - dp=sp; - } - } -#endif - } -} -#endif - -#ifdef PNG_READ_FILLER_SUPPORTED -/* Add filler channel if we have RGB color */ -static void -png_do_read_filler(png_row_infop row_info, png_bytep row, - png_uint_32 filler, png_uint_32 flags) -{ - png_uint_32 i; - png_uint_32 row_width = row_info->width; - -#ifdef PNG_READ_16BIT_SUPPORTED - png_byte hi_filler = (png_byte)(filler>>8); -#endif - png_byte lo_filler = (png_byte)filler; - - png_debug(1, "in png_do_read_filler"); - - if ( - row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - if (row_info->bit_depth == 8) - { - if ((flags & PNG_FLAG_FILLER_AFTER) != 0) - { - /* This changes the data from G to GX */ - png_bytep sp = row + (png_size_t)row_width; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 1; i < row_width; i++) - { - *(--dp) = lo_filler; - *(--dp) = *(--sp); - } - *(--dp) = lo_filler; - row_info->channels = 2; - row_info->pixel_depth = 16; - row_info->rowbytes = row_width * 2; - } - - else - { - /* This changes the data from G to XG */ - png_bytep sp = row + (png_size_t)row_width; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = lo_filler; - } - row_info->channels = 2; - row_info->pixel_depth = 16; - row_info->rowbytes = row_width * 2; - } - } - -#ifdef PNG_READ_16BIT_SUPPORTED - else if (row_info->bit_depth == 16) - { - if ((flags & PNG_FLAG_FILLER_AFTER) != 0) - { - /* This changes the data from GG to GGXX */ - png_bytep sp = row + (png_size_t)row_width * 2; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 1; i < row_width; i++) - { - *(--dp) = lo_filler; - *(--dp) = hi_filler; - *(--dp) = *(--sp); - *(--dp) = *(--sp); - } - *(--dp) = lo_filler; - *(--dp) = hi_filler; - row_info->channels = 2; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - - else - { - /* This changes the data from GG to XXGG */ - png_bytep sp = row + (png_size_t)row_width * 2; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = lo_filler; - *(--dp) = hi_filler; - } - row_info->channels = 2; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - } -#endif - } /* COLOR_TYPE == GRAY */ - else if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - if (row_info->bit_depth == 8) - { - if ((flags & PNG_FLAG_FILLER_AFTER) != 0) - { - /* This changes the data from RGB to RGBX */ - png_bytep sp = row + (png_size_t)row_width * 3; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 1; i < row_width; i++) - { - *(--dp) = lo_filler; - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - } - *(--dp) = lo_filler; - row_info->channels = 4; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - - else - { - /* This changes the data from RGB to XRGB */ - png_bytep sp = row + (png_size_t)row_width * 3; - png_bytep dp = sp + (png_size_t)row_width; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = lo_filler; - } - row_info->channels = 4; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - } - } - -#ifdef PNG_READ_16BIT_SUPPORTED - else if (row_info->bit_depth == 16) - { - if ((flags & PNG_FLAG_FILLER_AFTER) != 0) - { - /* This changes the data from RRGGBB to RRGGBBXX */ - png_bytep sp = row + (png_size_t)row_width * 6; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 1; i < row_width; i++) - { - *(--dp) = lo_filler; - *(--dp) = hi_filler; - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - } - *(--dp) = lo_filler; - *(--dp) = hi_filler; - row_info->channels = 4; - row_info->pixel_depth = 64; - row_info->rowbytes = row_width * 8; - } - - else - { - /* This changes the data from RRGGBB to XXRRGGBB */ - png_bytep sp = row + (png_size_t)row_width * 6; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = *(--sp); - *(--dp) = lo_filler; - *(--dp) = hi_filler; - } - - row_info->channels = 4; - row_info->pixel_depth = 64; - row_info->rowbytes = row_width * 8; - } - } -#endif - } /* COLOR_TYPE == RGB */ -} -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED -/* Expand grayscale files to RGB, with or without alpha */ -static void -png_do_gray_to_rgb(png_row_infop row_info, png_bytep row) -{ - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - png_debug(1, "in png_do_gray_to_rgb"); - - if (row_info->bit_depth >= 8 && - (row_info->color_type & PNG_COLOR_MASK_COLOR) == 0) - { - if (row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - if (row_info->bit_depth == 8) - { - /* This changes G to RGB */ - png_bytep sp = row + (png_size_t)row_width - 1; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(dp--) = *sp; - *(dp--) = *sp; - *(dp--) = *(sp--); - } - } - - else - { - /* This changes GG to RRGGBB */ - png_bytep sp = row + (png_size_t)row_width * 2 - 1; - png_bytep dp = sp + (png_size_t)row_width * 4; - for (i = 0; i < row_width; i++) - { - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *(sp--); - *(dp--) = *(sp--); - } - } - } - - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This changes GA to RGBA */ - png_bytep sp = row + (png_size_t)row_width * 2 - 1; - png_bytep dp = sp + (png_size_t)row_width * 2; - for (i = 0; i < row_width; i++) - { - *(dp--) = *(sp--); - *(dp--) = *sp; - *(dp--) = *sp; - *(dp--) = *(sp--); - } - } - - else - { - /* This changes GGAA to RRGGBBAA */ - png_bytep sp = row + (png_size_t)row_width * 4 - 1; - png_bytep dp = sp + (png_size_t)row_width * 4; - for (i = 0; i < row_width; i++) - { - *(dp--) = *(sp--); - *(dp--) = *(sp--); - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *sp; - *(dp--) = *(sp - 1); - *(dp--) = *(sp--); - *(dp--) = *(sp--); - } - } - } - row_info->channels = (png_byte)(row_info->channels + 2); - row_info->color_type |= PNG_COLOR_MASK_COLOR; - row_info->pixel_depth = (png_byte)(row_info->channels * - row_info->bit_depth); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } -} -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED -/* Reduce RGB files to grayscale, with or without alpha - * using the equation given in Poynton's ColorFAQ of 1998-01-04 at - * (THIS LINK IS DEAD June 2008 but - * versions dated 1998 through November 2002 have been archived at - * https://web.archive.org/web/20000816232553/www.inforamp.net/ - * ~poynton/notes/colour_and_gamma/ColorFAQ.txt ) - * Charles Poynton poynton at poynton.com - * - * Y = 0.212671 * R + 0.715160 * G + 0.072169 * B - * - * which can be expressed with integers as - * - * Y = (6969 * R + 23434 * G + 2365 * B)/32768 - * - * Poynton's current link (as of January 2003 through July 2011): - * - * has changed the numbers slightly: - * - * Y = 0.2126*R + 0.7152*G + 0.0722*B - * - * which can be expressed with integers as - * - * Y = (6966 * R + 23436 * G + 2366 * B)/32768 - * - * Historically, however, libpng uses numbers derived from the ITU-R Rec 709 - * end point chromaticities and the D65 white point. Depending on the - * precision used for the D65 white point this produces a variety of different - * numbers, however if the four decimal place value used in ITU-R Rec 709 is - * used (0.3127,0.3290) the Y calculation would be: - * - * Y = (6968 * R + 23435 * G + 2366 * B)/32768 - * - * While this is correct the rounding results in an overflow for white, because - * the sum of the rounded coefficients is 32769, not 32768. Consequently - * libpng uses, instead, the closest non-overflowing approximation: - * - * Y = (6968 * R + 23434 * G + 2366 * B)/32768 - * - * Starting with libpng-1.5.5, if the image being converted has a cHRM chunk - * (including an sRGB chunk) then the chromaticities are used to calculate the - * coefficients. See the chunk handling in pngrutil.c for more information. - * - * In all cases the calculation is to be done in a linear colorspace. If no - * gamma information is available to correct the encoding of the original RGB - * values this results in an implicit assumption that the original PNG RGB - * values were linear. - * - * Other integer coefficents can be used via png_set_rgb_to_gray(). Because - * the API takes just red and green coefficients the blue coefficient is - * calculated to make the sum 32768. This will result in different rounding - * to that used above. - */ -static int -png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row) - -{ - int rgb_error = 0; - - png_debug(1, "in png_do_rgb_to_gray"); - - if ((row_info->color_type & PNG_COLOR_MASK_PALETTE) == 0 && - (row_info->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - PNG_CONST png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff; - PNG_CONST png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff; - PNG_CONST png_uint_32 bc = 32768 - rc - gc; - PNG_CONST png_uint_32 row_width = row_info->width; - PNG_CONST int have_alpha = - (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0; - - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - /* Notice that gamma to/from 1 are not necessarily inverses (if - * there is an overall gamma correction). Prior to 1.5.5 this code - * checked the linearized values for equality; this doesn't match - * the documentation, the original values must be checked. - */ - if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL) - { - png_bytep sp = row; - png_bytep dp = row; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - png_byte red = *(sp++); - png_byte green = *(sp++); - png_byte blue = *(sp++); - - if (red != green || red != blue) - { - red = png_ptr->gamma_to_1[red]; - green = png_ptr->gamma_to_1[green]; - blue = png_ptr->gamma_to_1[blue]; - - rgb_error |= 1; - *(dp++) = png_ptr->gamma_from_1[ - (rc*red + gc*green + bc*blue + 16384)>>15]; - } - - else - { - /* If there is no overall correction the table will not be - * set. - */ - if (png_ptr->gamma_table != NULL) - red = png_ptr->gamma_table[red]; - - *(dp++) = red; - } - - if (have_alpha != 0) - *(dp++) = *(sp++); - } - } - else -#endif - { - png_bytep sp = row; - png_bytep dp = row; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - png_byte red = *(sp++); - png_byte green = *(sp++); - png_byte blue = *(sp++); - - if (red != green || red != blue) - { - rgb_error |= 1; - /* NOTE: this is the historical approach which simply - * truncates the results. - */ - *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15); - } - - else - *(dp++) = red; - - if (have_alpha != 0) - *(dp++) = *(sp++); - } - } - } - - else /* RGB bit_depth == 16 */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (png_ptr->gamma_16_to_1 != NULL && png_ptr->gamma_16_from_1 != NULL) - { - png_bytep sp = row; - png_bytep dp = row; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - png_uint_16 red, green, blue, w; - png_byte hi,lo; - - hi=*(sp)++; lo=*(sp)++; red = (png_uint_16)((hi << 8) | (lo)); - hi=*(sp)++; lo=*(sp)++; green = (png_uint_16)((hi << 8) | (lo)); - hi=*(sp)++; lo=*(sp)++; blue = (png_uint_16)((hi << 8) | (lo)); - - if (red == green && red == blue) - { - if (png_ptr->gamma_16_table != NULL) - w = png_ptr->gamma_16_table[(red & 0xff) - >> png_ptr->gamma_shift][red >> 8]; - - else - w = red; - } - - else - { - png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red & 0xff) - >> png_ptr->gamma_shift][red>>8]; - png_uint_16 green_1 = - png_ptr->gamma_16_to_1[(green & 0xff) >> - png_ptr->gamma_shift][green>>8]; - png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue & 0xff) - >> png_ptr->gamma_shift][blue>>8]; - png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1 - + bc*blue_1 + 16384)>>15); - w = png_ptr->gamma_16_from_1[(gray16 & 0xff) >> - png_ptr->gamma_shift][gray16 >> 8]; - rgb_error |= 1; - } - - *(dp++) = (png_byte)((w>>8) & 0xff); - *(dp++) = (png_byte)(w & 0xff); - - if (have_alpha != 0) - { - *(dp++) = *(sp++); - *(dp++) = *(sp++); - } - } - } - else -#endif - { - png_bytep sp = row; - png_bytep dp = row; - png_uint_32 i; - - for (i = 0; i < row_width; i++) - { - png_uint_16 red, green, blue, gray16; - png_byte hi,lo; - - hi=*(sp)++; lo=*(sp)++; red = (png_uint_16)((hi << 8) | (lo)); - hi=*(sp)++; lo=*(sp)++; green = (png_uint_16)((hi << 8) | (lo)); - hi=*(sp)++; lo=*(sp)++; blue = (png_uint_16)((hi << 8) | (lo)); - - if (red != green || red != blue) - rgb_error |= 1; - - /* From 1.5.5 in the 16-bit case do the accurate conversion even - * in the 'fast' case - this is because this is where the code - * ends up when handling linear 16-bit data. - */ - gray16 = (png_uint_16)((rc*red + gc*green + bc*blue + 16384) >> - 15); - *(dp++) = (png_byte)((gray16 >> 8) & 0xff); - *(dp++) = (png_byte)(gray16 & 0xff); - - if (have_alpha != 0) - { - *(dp++) = *(sp++); - *(dp++) = *(sp++); - } - } - } - } - - row_info->channels = (png_byte)(row_info->channels - 2); - row_info->color_type = (png_byte)(row_info->color_type & - ~PNG_COLOR_MASK_COLOR); - row_info->pixel_depth = (png_byte)(row_info->channels * - row_info->bit_depth); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - return rgb_error; -} -#endif - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) -/* Replace any alpha or transparency with the supplied background color. - * "background" is already in the screen gamma, while "background_1" is - * at a gamma of 1.0. Paletted files have already been taken care of. - */ -static void -png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr) -{ -#ifdef PNG_READ_GAMMA_SUPPORTED - png_const_bytep gamma_table = png_ptr->gamma_table; - png_const_bytep gamma_from_1 = png_ptr->gamma_from_1; - png_const_bytep gamma_to_1 = png_ptr->gamma_to_1; - png_const_uint_16pp gamma_16 = png_ptr->gamma_16_table; - png_const_uint_16pp gamma_16_from_1 = png_ptr->gamma_16_from_1; - png_const_uint_16pp gamma_16_to_1 = png_ptr->gamma_16_to_1; - int gamma_shift = png_ptr->gamma_shift; - int optimize = (png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0; -#endif - - png_bytep sp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - int shift; - - png_debug(1, "in png_do_compose"); - - { - switch (row_info->color_type) - { - case PNG_COLOR_TYPE_GRAY: - { - switch (row_info->bit_depth) - { - case 1: - { - sp = row; - shift = 7; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x01) - == png_ptr->trans_color.gray) - { - unsigned int tmp = *sp & (0x7f7f >> (7 - shift)); - tmp |= - (unsigned int)(png_ptr->background.gray << shift); - *sp = (png_byte)(tmp & 0xff); - } - - if (shift == 0) - { - shift = 7; - sp++; - } - - else - shift--; - } - break; - } - - case 2: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - shift = 6; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x03) - == png_ptr->trans_color.gray) - { - unsigned int tmp = *sp & (0x3f3f >> (6 - shift)); - tmp |= - (unsigned int)png_ptr->background.gray << shift; - *sp = (png_byte)(tmp & 0xff); - } - - else - { - unsigned int p = (*sp >> shift) & 0x03; - unsigned int g = (gamma_table [p | (p << 2) | - (p << 4) | (p << 6)] >> 6) & 0x03; - unsigned int tmp = *sp & (0x3f3f >> (6 - shift)); - tmp |= (unsigned int)(g << shift); - *sp = (png_byte)(tmp & 0xff); - } - - if (shift == 0) - { - shift = 6; - sp++; - } - - else - shift -= 2; - } - } - - else -#endif - { - sp = row; - shift = 6; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x03) - == png_ptr->trans_color.gray) - { - unsigned int tmp = *sp & (0x3f3f >> (6 - shift)); - tmp |= - (unsigned int)png_ptr->background.gray << shift; - *sp = (png_byte)(tmp & 0xff); - } - - if (shift == 0) - { - shift = 6; - sp++; - } - - else - shift -= 2; - } - } - break; - } - - case 4: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - shift = 4; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x0f) - == png_ptr->trans_color.gray) - { - unsigned int tmp = *sp & (0x0f0f >> (4 - shift)); - tmp |= - (unsigned int)(png_ptr->background.gray << shift); - *sp = (png_byte)(tmp & 0xff); - } - - else - { - unsigned int p = (*sp >> shift) & 0x0f; - unsigned int g = (gamma_table[p | (p << 4)] >> 4) & - 0x0f; - unsigned int tmp = *sp & (0x0f0f >> (4 - shift)); - tmp |= (unsigned int)(g << shift); - *sp = (png_byte)(tmp & 0xff); - } - - if (shift == 0) - { - shift = 4; - sp++; - } - - else - shift -= 4; - } - } - - else -#endif - { - sp = row; - shift = 4; - for (i = 0; i < row_width; i++) - { - if ((png_uint_16)((*sp >> shift) & 0x0f) - == png_ptr->trans_color.gray) - { - unsigned int tmp = *sp & (0x0f0f >> (4 - shift)); - tmp |= - (unsigned int)(png_ptr->background.gray << shift); - *sp = (png_byte)(tmp & 0xff); - } - - if (shift == 0) - { - shift = 4; - sp++; - } - - else - shift -= 4; - } - } - break; - } - - case 8: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp++) - { - if (*sp == png_ptr->trans_color.gray) - *sp = (png_byte)png_ptr->background.gray; - - else - *sp = gamma_table[*sp]; - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp++) - { - if (*sp == png_ptr->trans_color.gray) - *sp = (png_byte)png_ptr->background.gray; - } - } - break; - } - - case 16: - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 2) - { - png_uint_16 v; - - v = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - - if (v == png_ptr->trans_color.gray) - { - /* Background is already in screen gamma */ - *sp = (png_byte)((png_ptr->background.gray >> 8) - & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.gray - & 0xff); - } - - else - { - v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 2) - { - png_uint_16 v; - - v = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - - if (v == png_ptr->trans_color.gray) - { - *sp = (png_byte)((png_ptr->background.gray >> 8) - & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.gray - & 0xff); - } - } - } - break; - } - - default: - break; - } - break; - } - - case PNG_COLOR_TYPE_RGB: - { - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_table != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 3) - { - if (*sp == png_ptr->trans_color.red && - *(sp + 1) == png_ptr->trans_color.green && - *(sp + 2) == png_ptr->trans_color.blue) - { - *sp = (png_byte)png_ptr->background.red; - *(sp + 1) = (png_byte)png_ptr->background.green; - *(sp + 2) = (png_byte)png_ptr->background.blue; - } - - else - { - *sp = gamma_table[*sp]; - *(sp + 1) = gamma_table[*(sp + 1)]; - *(sp + 2) = gamma_table[*(sp + 2)]; - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 3) - { - if (*sp == png_ptr->trans_color.red && - *(sp + 1) == png_ptr->trans_color.green && - *(sp + 2) == png_ptr->trans_color.blue) - { - *sp = (png_byte)png_ptr->background.red; - *(sp + 1) = (png_byte)png_ptr->background.green; - *(sp + 2) = (png_byte)png_ptr->background.blue; - } - } - } - } - else /* if (row_info->bit_depth == 16) */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 6) - { - png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - - png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8) - + *(sp + 3)); - - png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8) - + *(sp + 5)); - - if (r == png_ptr->trans_color.red && - g == png_ptr->trans_color.green && - b == png_ptr->trans_color.blue) - { - /* Background is already in screen gamma */ - *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); - *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) - & 0xff); - *(sp + 3) = (png_byte)(png_ptr->background.green - & 0xff); - *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) - & 0xff); - *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); - } - - else - { - png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - - v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)]; - *(sp + 2) = (png_byte)((v >> 8) & 0xff); - *(sp + 3) = (png_byte)(v & 0xff); - - v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)]; - *(sp + 4) = (png_byte)((v >> 8) & 0xff); - *(sp + 5) = (png_byte)(v & 0xff); - } - } - } - - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 6) - { - png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - - png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8) - + *(sp + 3)); - - png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8) - + *(sp + 5)); - - if (r == png_ptr->trans_color.red && - g == png_ptr->trans_color.green && - b == png_ptr->trans_color.blue) - { - *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); - *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) - & 0xff); - *(sp + 3) = (png_byte)(png_ptr->background.green - & 0xff); - *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) - & 0xff); - *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); - } - } - } - } - break; - } - - case PNG_COLOR_TYPE_GRAY_ALPHA: - { - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_to_1 != NULL && gamma_from_1 != NULL && - gamma_table != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 2) - { - png_uint_16 a = *(sp + 1); - - if (a == 0xff) - *sp = gamma_table[*sp]; - - else if (a == 0) - { - /* Background is already in screen gamma */ - *sp = (png_byte)png_ptr->background.gray; - } - - else - { - png_byte v, w; - - v = gamma_to_1[*sp]; - png_composite(w, v, a, png_ptr->background_1.gray); - if (optimize == 0) - w = gamma_from_1[w]; - *sp = w; - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 2) - { - png_byte a = *(sp + 1); - - if (a == 0) - *sp = (png_byte)png_ptr->background.gray; - - else if (a < 0xff) - png_composite(*sp, *sp, a, png_ptr->background.gray); - } - } - } - else /* if (png_ptr->bit_depth == 16) */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL && gamma_16_from_1 != NULL && - gamma_16_to_1 != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 4) - { - png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8) - + *(sp + 3)); - - if (a == (png_uint_16)0xffff) - { - png_uint_16 v; - - v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - } - - else if (a == 0) - { - /* Background is already in screen gamma */ - *sp = (png_byte)((png_ptr->background.gray >> 8) - & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff); - } - - else - { - png_uint_16 g, v, w; - - g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp]; - png_composite_16(v, g, a, png_ptr->background_1.gray); - if (optimize != 0) - w = v; - else - w = gamma_16_from_1[(v & 0xff) >> - gamma_shift][v >> 8]; - *sp = (png_byte)((w >> 8) & 0xff); - *(sp + 1) = (png_byte)(w & 0xff); - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 4) - { - png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8) - + *(sp + 3)); - - if (a == 0) - { - *sp = (png_byte)((png_ptr->background.gray >> 8) - & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff); - } - - else if (a < 0xffff) - { - png_uint_16 g, v; - - g = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - png_composite_16(v, g, a, png_ptr->background.gray); - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - } - } - } - } - break; - } - - case PNG_COLOR_TYPE_RGB_ALPHA: - { - if (row_info->bit_depth == 8) - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_to_1 != NULL && gamma_from_1 != NULL && - gamma_table != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 4) - { - png_byte a = *(sp + 3); - - if (a == 0xff) - { - *sp = gamma_table[*sp]; - *(sp + 1) = gamma_table[*(sp + 1)]; - *(sp + 2) = gamma_table[*(sp + 2)]; - } - - else if (a == 0) - { - /* Background is already in screen gamma */ - *sp = (png_byte)png_ptr->background.red; - *(sp + 1) = (png_byte)png_ptr->background.green; - *(sp + 2) = (png_byte)png_ptr->background.blue; - } - - else - { - png_byte v, w; - - v = gamma_to_1[*sp]; - png_composite(w, v, a, png_ptr->background_1.red); - if (optimize == 0) w = gamma_from_1[w]; - *sp = w; - - v = gamma_to_1[*(sp + 1)]; - png_composite(w, v, a, png_ptr->background_1.green); - if (optimize == 0) w = gamma_from_1[w]; - *(sp + 1) = w; - - v = gamma_to_1[*(sp + 2)]; - png_composite(w, v, a, png_ptr->background_1.blue); - if (optimize == 0) w = gamma_from_1[w]; - *(sp + 2) = w; - } - } - } - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 4) - { - png_byte a = *(sp + 3); - - if (a == 0) - { - *sp = (png_byte)png_ptr->background.red; - *(sp + 1) = (png_byte)png_ptr->background.green; - *(sp + 2) = (png_byte)png_ptr->background.blue; - } - - else if (a < 0xff) - { - png_composite(*sp, *sp, a, png_ptr->background.red); - - png_composite(*(sp + 1), *(sp + 1), a, - png_ptr->background.green); - - png_composite(*(sp + 2), *(sp + 2), a, - png_ptr->background.blue); - } - } - } - } - else /* if (row_info->bit_depth == 16) */ - { -#ifdef PNG_READ_GAMMA_SUPPORTED - if (gamma_16 != NULL && gamma_16_from_1 != NULL && - gamma_16_to_1 != NULL) - { - sp = row; - for (i = 0; i < row_width; i++, sp += 8) - { - png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6)) - << 8) + (png_uint_16)(*(sp + 7))); - - if (a == (png_uint_16)0xffff) - { - png_uint_16 v; - - v = gamma_16[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - - v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)]; - *(sp + 2) = (png_byte)((v >> 8) & 0xff); - *(sp + 3) = (png_byte)(v & 0xff); - - v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)]; - *(sp + 4) = (png_byte)((v >> 8) & 0xff); - *(sp + 5) = (png_byte)(v & 0xff); - } - - else if (a == 0) - { - /* Background is already in screen gamma */ - *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); - *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) - & 0xff); - *(sp + 3) = (png_byte)(png_ptr->background.green - & 0xff); - *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) - & 0xff); - *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); - } - - else - { - png_uint_16 v, w; - - v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp]; - png_composite_16(w, v, a, png_ptr->background_1.red); - if (optimize == 0) - w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >> - 8]; - *sp = (png_byte)((w >> 8) & 0xff); - *(sp + 1) = (png_byte)(w & 0xff); - - v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)]; - png_composite_16(w, v, a, png_ptr->background_1.green); - if (optimize == 0) - w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >> - 8]; - - *(sp + 2) = (png_byte)((w >> 8) & 0xff); - *(sp + 3) = (png_byte)(w & 0xff); - - v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)]; - png_composite_16(w, v, a, png_ptr->background_1.blue); - if (optimize == 0) - w = gamma_16_from_1[((w & 0xff) >> gamma_shift)][w >> - 8]; - - *(sp + 4) = (png_byte)((w >> 8) & 0xff); - *(sp + 5) = (png_byte)(w & 0xff); - } - } - } - - else -#endif - { - sp = row; - for (i = 0; i < row_width; i++, sp += 8) - { - png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6)) - << 8) + (png_uint_16)(*(sp + 7))); - - if (a == 0) - { - *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff); - *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff); - *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) - & 0xff); - *(sp + 3) = (png_byte)(png_ptr->background.green - & 0xff); - *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) - & 0xff); - *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff); - } - - else if (a < 0xffff) - { - png_uint_16 v; - - png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1)); - png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8) - + *(sp + 3)); - png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8) - + *(sp + 5)); - - png_composite_16(v, r, a, png_ptr->background.red); - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - - png_composite_16(v, g, a, png_ptr->background.green); - *(sp + 2) = (png_byte)((v >> 8) & 0xff); - *(sp + 3) = (png_byte)(v & 0xff); - - png_composite_16(v, b, a, png_ptr->background.blue); - *(sp + 4) = (png_byte)((v >> 8) & 0xff); - *(sp + 5) = (png_byte)(v & 0xff); - } - } - } - } - break; - } - - default: - break; - } - } -} -#endif /* READ_BACKGROUND || READ_ALPHA_MODE */ - -#ifdef PNG_READ_GAMMA_SUPPORTED -/* Gamma correct the image, avoiding the alpha channel. Make sure - * you do this after you deal with the transparency issue on grayscale - * or RGB images. If your bit depth is 8, use gamma_table, if it - * is 16, use gamma_16_table and gamma_shift. Build these with - * build_gamma_table(). - */ -static void -png_do_gamma(png_row_infop row_info, png_bytep row, png_structrp png_ptr) -{ - png_const_bytep gamma_table = png_ptr->gamma_table; - png_const_uint_16pp gamma_16_table = png_ptr->gamma_16_table; - int gamma_shift = png_ptr->gamma_shift; - - png_bytep sp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_gamma"); - - if (((row_info->bit_depth <= 8 && gamma_table != NULL) || - (row_info->bit_depth == 16 && gamma_16_table != NULL))) - { - switch (row_info->color_type) - { - case PNG_COLOR_TYPE_RGB: - { - if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp++; - *sp = gamma_table[*sp]; - sp++; - *sp = gamma_table[*sp]; - sp++; - } - } - - else /* if (row_info->bit_depth == 16) */ - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v; - - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - } - } - break; - } - - case PNG_COLOR_TYPE_RGB_ALPHA: - { - if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp++; - - *sp = gamma_table[*sp]; - sp++; - - *sp = gamma_table[*sp]; - sp++; - - sp++; - } - } - - else /* if (row_info->bit_depth == 16) */ - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - - v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 4; - } - } - break; - } - - case PNG_COLOR_TYPE_GRAY_ALPHA: - { - if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp += 2; - } - } - - else /* if (row_info->bit_depth == 16) */ - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 4; - } - } - break; - } - - case PNG_COLOR_TYPE_GRAY: - { - if (row_info->bit_depth == 2) - { - sp = row; - for (i = 0; i < row_width; i += 4) - { - int a = *sp & 0xc0; - int b = *sp & 0x30; - int c = *sp & 0x0c; - int d = *sp & 0x03; - - *sp = (png_byte)( - ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)| - ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)| - ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)| - ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) )); - sp++; - } - } - - if (row_info->bit_depth == 4) - { - sp = row; - for (i = 0; i < row_width; i += 2) - { - int msb = *sp & 0xf0; - int lsb = *sp & 0x0f; - - *sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0) - | (((int)gamma_table[(lsb << 4) | lsb]) >> 4)); - sp++; - } - } - - else if (row_info->bit_depth == 8) - { - sp = row; - for (i = 0; i < row_width; i++) - { - *sp = gamma_table[*sp]; - sp++; - } - } - - else if (row_info->bit_depth == 16) - { - sp = row; - for (i = 0; i < row_width; i++) - { - png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp]; - *sp = (png_byte)((v >> 8) & 0xff); - *(sp + 1) = (png_byte)(v & 0xff); - sp += 2; - } - } - break; - } - - default: - break; - } - } -} -#endif - -#ifdef PNG_READ_ALPHA_MODE_SUPPORTED -/* Encode the alpha channel to the output gamma (the input channel is always - * linear.) Called only with color types that have an alpha channel. Needs the - * from_1 tables. - */ -static void -png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr) -{ - png_uint_32 row_width = row_info->width; - - png_debug(1, "in png_do_encode_alpha"); - - if ((row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0) - { - if (row_info->bit_depth == 8) - { - PNG_CONST png_bytep table = png_ptr->gamma_from_1; - - if (table != NULL) - { - PNG_CONST int step = - (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2; - - /* The alpha channel is the last component: */ - row += step - 1; - - for (; row_width > 0; --row_width, row += step) - *row = table[*row]; - - return; - } - } - - else if (row_info->bit_depth == 16) - { - PNG_CONST png_uint_16pp table = png_ptr->gamma_16_from_1; - PNG_CONST int gamma_shift = png_ptr->gamma_shift; - - if (table != NULL) - { - PNG_CONST int step = - (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4; - - /* The alpha channel is the last component: */ - row += step - 2; - - for (; row_width > 0; --row_width, row += step) - { - png_uint_16 v; - - v = table[*(row + 1) >> gamma_shift][*row]; - *row = (png_byte)((v >> 8) & 0xff); - *(row + 1) = (png_byte)(v & 0xff); - } - - return; - } - } - } - - /* Only get to here if called with a weird row_info; no harm has been done, - * so just issue a warning. - */ - png_warning(png_ptr, "png_do_encode_alpha: unexpected call"); -} -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED -/* Expands a palette row to an RGB or RGBA row depending - * upon whether you supply trans and num_trans. - */ -static void -png_do_expand_palette(png_row_infop row_info, png_bytep row, - png_const_colorp palette, png_const_bytep trans_alpha, int num_trans) -{ - int shift, value; - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_expand_palette"); - - if (row_info->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (row_info->bit_depth < 8) - { - switch (row_info->bit_depth) - { - case 1: - { - sp = row + (png_size_t)((row_width - 1) >> 3); - dp = row + (png_size_t)row_width - 1; - shift = 7 - (int)((row_width + 7) & 0x07); - for (i = 0; i < row_width; i++) - { - if ((*sp >> shift) & 0x01) - *dp = 1; - - else - *dp = 0; - - if (shift == 7) - { - shift = 0; - sp--; - } - - else - shift++; - - dp--; - } - break; - } - - case 2: - { - sp = row + (png_size_t)((row_width - 1) >> 2); - dp = row + (png_size_t)row_width - 1; - shift = (int)((3 - ((row_width + 3) & 0x03)) << 1); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x03; - *dp = (png_byte)value; - if (shift == 6) - { - shift = 0; - sp--; - } - - else - shift += 2; - - dp--; - } - break; - } - - case 4: - { - sp = row + (png_size_t)((row_width - 1) >> 1); - dp = row + (png_size_t)row_width - 1; - shift = (int)((row_width & 0x01) << 2); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x0f; - *dp = (png_byte)value; - if (shift == 4) - { - shift = 0; - sp--; - } - - else - shift += 4; - - dp--; - } - break; - } - - default: - break; - } - row_info->bit_depth = 8; - row_info->pixel_depth = 8; - row_info->rowbytes = row_width; - } - - if (row_info->bit_depth == 8) - { - { - if (num_trans > 0) - { - sp = row + (png_size_t)row_width - 1; - dp = row + ((png_size_t)row_width << 2) - 1; - - for (i = 0; i < row_width; i++) - { - if ((int)(*sp) >= num_trans) - *dp-- = 0xff; - - else - *dp-- = trans_alpha[*sp]; - - *dp-- = palette[*sp].blue; - *dp-- = palette[*sp].green; - *dp-- = palette[*sp].red; - sp--; - } - row_info->bit_depth = 8; - row_info->pixel_depth = 32; - row_info->rowbytes = row_width * 4; - row_info->color_type = 6; - row_info->channels = 4; - } - - else - { - sp = row + (png_size_t)row_width - 1; - dp = row + (png_size_t)(row_width * 3) - 1; - - for (i = 0; i < row_width; i++) - { - *dp-- = palette[*sp].blue; - *dp-- = palette[*sp].green; - *dp-- = palette[*sp].red; - sp--; - } - - row_info->bit_depth = 8; - row_info->pixel_depth = 24; - row_info->rowbytes = row_width * 3; - row_info->color_type = 2; - row_info->channels = 3; - } - } - } - } -} - -/* If the bit depth < 8, it is expanded to 8. Also, if the already - * expanded transparency value is supplied, an alpha channel is built. - */ -static void -png_do_expand(png_row_infop row_info, png_bytep row, - png_const_color_16p trans_color) -{ - int shift, value; - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_expand"); - - { - if (row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - unsigned int gray = trans_color != NULL ? trans_color->gray : 0; - - if (row_info->bit_depth < 8) - { - switch (row_info->bit_depth) - { - case 1: - { - gray = (gray & 0x01) * 0xff; - sp = row + (png_size_t)((row_width - 1) >> 3); - dp = row + (png_size_t)row_width - 1; - shift = 7 - (int)((row_width + 7) & 0x07); - for (i = 0; i < row_width; i++) - { - if ((*sp >> shift) & 0x01) - *dp = 0xff; - - else - *dp = 0; - - if (shift == 7) - { - shift = 0; - sp--; - } - - else - shift++; - - dp--; - } - break; - } - - case 2: - { - gray = (gray & 0x03) * 0x55; - sp = row + (png_size_t)((row_width - 1) >> 2); - dp = row + (png_size_t)row_width - 1; - shift = (int)((3 - ((row_width + 3) & 0x03)) << 1); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x03; - *dp = (png_byte)(value | (value << 2) | (value << 4) | - (value << 6)); - if (shift == 6) - { - shift = 0; - sp--; - } - - else - shift += 2; - - dp--; - } - break; - } - - case 4: - { - gray = (gray & 0x0f) * 0x11; - sp = row + (png_size_t)((row_width - 1) >> 1); - dp = row + (png_size_t)row_width - 1; - shift = (int)((1 - ((row_width + 1) & 0x01)) << 2); - for (i = 0; i < row_width; i++) - { - value = (*sp >> shift) & 0x0f; - *dp = (png_byte)(value | (value << 4)); - if (shift == 4) - { - shift = 0; - sp--; - } - - else - shift = 4; - - dp--; - } - break; - } - - default: - break; - } - - row_info->bit_depth = 8; - row_info->pixel_depth = 8; - row_info->rowbytes = row_width; - } - - if (trans_color != NULL) - { - if (row_info->bit_depth == 8) - { - gray = gray & 0xff; - sp = row + (png_size_t)row_width - 1; - dp = row + ((png_size_t)row_width << 1) - 1; - - for (i = 0; i < row_width; i++) - { - if ((*sp & 0xffU) == gray) - *dp-- = 0; - - else - *dp-- = 0xff; - - *dp-- = *sp--; - } - } - - else if (row_info->bit_depth == 16) - { - unsigned int gray_high = (gray >> 8) & 0xff; - unsigned int gray_low = gray & 0xff; - sp = row + row_info->rowbytes - 1; - dp = row + (row_info->rowbytes << 1) - 1; - for (i = 0; i < row_width; i++) - { - if ((*(sp - 1) & 0xffU) == gray_high && - (*(sp) & 0xffU) == gray_low) - { - *dp-- = 0; - *dp-- = 0; - } - - else - { - *dp-- = 0xff; - *dp-- = 0xff; - } - - *dp-- = *sp--; - *dp-- = *sp--; - } - } - - row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA; - row_info->channels = 2; - row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, - row_width); - } - } - else if (row_info->color_type == PNG_COLOR_TYPE_RGB && - trans_color != NULL) - { - if (row_info->bit_depth == 8) - { - png_byte red = (png_byte)(trans_color->red & 0xff); - png_byte green = (png_byte)(trans_color->green & 0xff); - png_byte blue = (png_byte)(trans_color->blue & 0xff); - sp = row + (png_size_t)row_info->rowbytes - 1; - dp = row + ((png_size_t)row_width << 2) - 1; - for (i = 0; i < row_width; i++) - { - if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue) - *dp-- = 0; - - else - *dp-- = 0xff; - - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - } - } - else if (row_info->bit_depth == 16) - { - png_byte red_high = (png_byte)((trans_color->red >> 8) & 0xff); - png_byte green_high = (png_byte)((trans_color->green >> 8) & 0xff); - png_byte blue_high = (png_byte)((trans_color->blue >> 8) & 0xff); - png_byte red_low = (png_byte)(trans_color->red & 0xff); - png_byte green_low = (png_byte)(trans_color->green & 0xff); - png_byte blue_low = (png_byte)(trans_color->blue & 0xff); - sp = row + row_info->rowbytes - 1; - dp = row + ((png_size_t)row_width << 3) - 1; - for (i = 0; i < row_width; i++) - { - if (*(sp - 5) == red_high && - *(sp - 4) == red_low && - *(sp - 3) == green_high && - *(sp - 2) == green_low && - *(sp - 1) == blue_high && - *(sp ) == blue_low) - { - *dp-- = 0; - *dp-- = 0; - } - - else - { - *dp-- = 0xff; - *dp-- = 0xff; - } - - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - *dp-- = *sp--; - } - } - row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA; - row_info->channels = 4; - row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - } -} -#endif - -#ifdef PNG_READ_EXPAND_16_SUPPORTED -/* If the bit depth is 8 and the color type is not a palette type expand the - * whole row to 16 bits. Has no effect otherwise. - */ -static void -png_do_expand_16(png_row_infop row_info, png_bytep row) -{ - if (row_info->bit_depth == 8 && - row_info->color_type != PNG_COLOR_TYPE_PALETTE) - { - /* The row have a sequence of bytes containing [0..255] and we need - * to turn it into another row containing [0..65535], to do this we - * calculate: - * - * (input / 255) * 65535 - * - * Which happens to be exactly input * 257 and this can be achieved - * simply by byte replication in place (copying backwards). - */ - png_byte *sp = row + row_info->rowbytes; /* source, last byte + 1 */ - png_byte *dp = sp + row_info->rowbytes; /* destination, end + 1 */ - while (dp > sp) - { - dp[-2] = dp[-1] = *--sp; dp -= 2; - } - - row_info->rowbytes *= 2; - row_info->bit_depth = 16; - row_info->pixel_depth = (png_byte)(row_info->channels * 16); - } -} -#endif - -#ifdef PNG_READ_QUANTIZE_SUPPORTED -static void -png_do_quantize(png_row_infop row_info, png_bytep row, - png_const_bytep palette_lookup, png_const_bytep quantize_lookup) -{ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width=row_info->width; - - png_debug(1, "in png_do_quantize"); - - if (row_info->bit_depth == 8) - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB && palette_lookup) - { - int r, g, b, p; - sp = row; - dp = row; - for (i = 0; i < row_width; i++) - { - r = *sp++; - g = *sp++; - b = *sp++; - - /* This looks real messy, but the compiler will reduce - * it down to a reasonable formula. For example, with - * 5 bits per color, we get: - * p = (((r >> 3) & 0x1f) << 10) | - * (((g >> 3) & 0x1f) << 5) | - * ((b >> 3) & 0x1f); - */ - p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) & - ((1 << PNG_QUANTIZE_RED_BITS) - 1)) << - (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) | - (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) & - ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) << - (PNG_QUANTIZE_BLUE_BITS)) | - ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) & - ((1 << PNG_QUANTIZE_BLUE_BITS) - 1)); - - *dp++ = palette_lookup[p]; - } - - row_info->color_type = PNG_COLOR_TYPE_PALETTE; - row_info->channels = 1; - row_info->pixel_depth = row_info->bit_depth; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA && - palette_lookup != NULL) - { - int r, g, b, p; - sp = row; - dp = row; - for (i = 0; i < row_width; i++) - { - r = *sp++; - g = *sp++; - b = *sp++; - sp++; - - p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) & - ((1 << PNG_QUANTIZE_RED_BITS) - 1)) << - (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) | - (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) & - ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) << - (PNG_QUANTIZE_BLUE_BITS)) | - ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) & - ((1 << PNG_QUANTIZE_BLUE_BITS) - 1)); - - *dp++ = palette_lookup[p]; - } - - row_info->color_type = PNG_COLOR_TYPE_PALETTE; - row_info->channels = 1; - row_info->pixel_depth = row_info->bit_depth; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width); - } - - else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE && - quantize_lookup) - { - sp = row; - - for (i = 0; i < row_width; i++, sp++) - { - *sp = quantize_lookup[*sp]; - } - } - } -} -#endif /* READ_QUANTIZE */ - -/* Transform the row. The order of transformations is significant, - * and is very touchy. If you add a transformation, take care to - * decide how it fits in with the other transformations here. - */ -void /* PRIVATE */ -png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info) -{ - png_debug(1, "in png_do_read_transformations"); - - if (png_ptr->row_buf == NULL) - { - /* Prior to 1.5.4 this output row/pass where the NULL pointer is, but this - * error is incredibly rare and incredibly easy to debug without this - * information. - */ - png_error(png_ptr, "NULL row buffer"); - } - - /* The following is debugging; prior to 1.5.4 the code was never compiled in; - * in 1.5.4 PNG_FLAG_DETECT_UNINITIALIZED was added and the macro - * PNG_WARN_UNINITIALIZED_ROW removed. In 1.6 the new flag is set only for - * all transformations, however in practice the ROW_INIT always gets done on - * demand, if necessary. - */ - if ((png_ptr->flags & PNG_FLAG_DETECT_UNINITIALIZED) != 0 && - (png_ptr->flags & PNG_FLAG_ROW_INIT) == 0) - { - /* Application has failed to call either png_read_start_image() or - * png_read_update_info() after setting transforms that expand pixels. - * This check added to libpng-1.2.19 (but not enabled until 1.5.4). - */ - png_error(png_ptr, "Uninitialized row"); - } - -#ifdef PNG_READ_EXPAND_SUPPORTED - if ((png_ptr->transformations & PNG_EXPAND) != 0) - { - if (row_info->color_type == PNG_COLOR_TYPE_PALETTE) - { - png_do_expand_palette(row_info, png_ptr->row_buf + 1, - png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans); - } - - else - { - if (png_ptr->num_trans != 0 && - (png_ptr->transformations & PNG_EXPAND_tRNS) != 0) - png_do_expand(row_info, png_ptr->row_buf + 1, - &(png_ptr->trans_color)); - - else - png_do_expand(row_info, png_ptr->row_buf + 1, - NULL); - } - } -#endif - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0 && - (png_ptr->transformations & PNG_COMPOSE) == 0 && - (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA || - row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)) - png_do_strip_channel(row_info, png_ptr->row_buf + 1, - 0 /* at_start == false, because SWAP_ALPHA happens later */); -#endif - -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) != 0) - { - int rgb_error = - png_do_rgb_to_gray(png_ptr, row_info, - png_ptr->row_buf + 1); - - if (rgb_error != 0) - { - png_ptr->rgb_to_gray_status=1; - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == - PNG_RGB_TO_GRAY_WARN) - png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel"); - - if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == - PNG_RGB_TO_GRAY_ERR) - png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel"); - } - } -#endif - -/* From Andreas Dilger e-mail to png-implement, 26 March 1998: - * - * In most cases, the "simple transparency" should be done prior to doing - * gray-to-RGB, or you will have to test 3x as many bytes to check if a - * pixel is transparent. You would also need to make sure that the - * transparency information is upgraded to RGB. - * - * To summarize, the current flow is: - * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite - * with background "in place" if transparent, - * convert to RGB if necessary - * - Gray + alpha -> composite with gray background and remove alpha bytes, - * convert to RGB if necessary - * - * To support RGB backgrounds for gray images we need: - * - Gray + simple transparency -> convert to RGB + simple transparency, - * compare 3 or 6 bytes and composite with - * background "in place" if transparent - * (3x compare/pixel compared to doing - * composite with gray bkgrnd) - * - Gray + alpha -> convert to RGB + alpha, composite with background and - * remove alpha bytes (3x float - * operations/pixel compared with composite - * on gray background) - * - * Greg's change will do this. The reason it wasn't done before is for - * performance, as this increases the per-pixel operations. If we would check - * in advance if the background was gray or RGB, and position the gray-to-RGB - * transform appropriately, then it would save a lot of work/time. - */ - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* If gray -> RGB, do so now only if background is non-gray; else do later - * for performance reasons - */ - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0 && - (png_ptr->mode & PNG_BACKGROUND_IS_GRAY) == 0) - png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1); -#endif - -#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) - if ((png_ptr->transformations & PNG_COMPOSE) != 0) - png_do_compose(row_info, png_ptr->row_buf + 1, png_ptr); -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED - if ((png_ptr->transformations & PNG_GAMMA) != 0 && -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - /* Because RGB_TO_GRAY does the gamma transform. */ - (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0 && -#endif -#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) - /* Because PNG_COMPOSE does the gamma transform if there is something to - * do (if there is an alpha channel or transparency.) - */ - !((png_ptr->transformations & PNG_COMPOSE) != 0 && - ((png_ptr->num_trans != 0) || - (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0)) && -#endif - /* Because png_init_read_transformations transforms the palette, unless - * RGB_TO_GRAY will do the transform. - */ - (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)) - png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr); -#endif - -#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_STRIP_ALPHA) != 0 && - (png_ptr->transformations & PNG_COMPOSE) != 0 && - (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA || - row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)) - png_do_strip_channel(row_info, png_ptr->row_buf + 1, - 0 /* at_start == false, because SWAP_ALPHA happens later */); -#endif - -#ifdef PNG_READ_ALPHA_MODE_SUPPORTED - if ((png_ptr->transformations & PNG_ENCODE_ALPHA) != 0 && - (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0) - png_do_encode_alpha(row_info, png_ptr->row_buf + 1, png_ptr); -#endif - -#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED - if ((png_ptr->transformations & PNG_SCALE_16_TO_8) != 0) - png_do_scale_16_to_8(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED - /* There is no harm in doing both of these because only one has any effect, - * by putting the 'scale' option first if the app asks for scale (either by - * calling the API or in a TRANSFORM flag) this is what happens. - */ - if ((png_ptr->transformations & PNG_16_TO_8) != 0) - png_do_chop(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_QUANTIZE_SUPPORTED - if ((png_ptr->transformations & PNG_QUANTIZE) != 0) - { - png_do_quantize(row_info, png_ptr->row_buf + 1, - png_ptr->palette_lookup, png_ptr->quantize_index); - - if (row_info->rowbytes == 0) - png_error(png_ptr, "png_do_quantize returned rowbytes=0"); - } -#endif /* READ_QUANTIZE */ - -#ifdef PNG_READ_EXPAND_16_SUPPORTED - /* Do the expansion now, after all the arithmetic has been done. Notice - * that previous transformations can handle the PNG_EXPAND_16 flag if this - * is efficient (particularly true in the case of gamma correction, where - * better accuracy results faster!) - */ - if ((png_ptr->transformations & PNG_EXPAND_16) != 0) - png_do_expand_16(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* NOTE: moved here in 1.5.4 (from much later in this list.) */ - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0 && - (png_ptr->mode & PNG_BACKGROUND_IS_GRAY) != 0) - png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_INVERT_SUPPORTED - if ((png_ptr->transformations & PNG_INVERT_MONO) != 0) - png_do_invert(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0) - png_do_read_invert_alpha(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_SHIFT_SUPPORTED - if ((png_ptr->transformations & PNG_SHIFT) != 0) - png_do_unshift(row_info, png_ptr->row_buf + 1, - &(png_ptr->shift)); -#endif - -#ifdef PNG_READ_PACK_SUPPORTED - if ((png_ptr->transformations & PNG_PACK) != 0) - png_do_unpack(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED - /* Added at libpng-1.5.10 */ - if (row_info->color_type == PNG_COLOR_TYPE_PALETTE && - png_ptr->num_palette_max >= 0) - png_do_check_palette_indexes(png_ptr, row_info); -#endif - -#ifdef PNG_READ_BGR_SUPPORTED - if ((png_ptr->transformations & PNG_BGR) != 0) - png_do_bgr(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if ((png_ptr->transformations & PNG_PACKSWAP) != 0) - png_do_packswap(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_FILLER_SUPPORTED - if ((png_ptr->transformations & PNG_FILLER) != 0) - png_do_read_filler(row_info, png_ptr->row_buf + 1, - (png_uint_32)png_ptr->filler, png_ptr->flags); -#endif - -#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_SWAP_ALPHA) != 0) - png_do_read_swap_alpha(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_READ_16BIT_SUPPORTED -#ifdef PNG_READ_SWAP_SUPPORTED - if ((png_ptr->transformations & PNG_SWAP_BYTES) != 0) - png_do_swap(row_info, png_ptr->row_buf + 1); -#endif -#endif - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) - { - if (png_ptr->read_user_transform_fn != NULL) - (*(png_ptr->read_user_transform_fn)) /* User read transform function */ - (png_ptr, /* png_ptr */ - row_info, /* row_info: */ - /* png_uint_32 width; width of row */ - /* png_size_t rowbytes; number of bytes in row */ - /* png_byte color_type; color type of pixels */ - /* png_byte bit_depth; bit depth of samples */ - /* png_byte channels; number of channels (1-4) */ - /* png_byte pixel_depth; bits per pixel (depth*channels) */ - png_ptr->row_buf + 1); /* start of pixel data for row */ -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED - if (png_ptr->user_transform_depth != 0) - row_info->bit_depth = png_ptr->user_transform_depth; - - if (png_ptr->user_transform_channels != 0) - row_info->channels = png_ptr->user_transform_channels; -#endif - row_info->pixel_depth = (png_byte)(row_info->bit_depth * - row_info->channels); - - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_info->width); - } -#endif -} - -#endif /* READ_TRANSFORMS */ -#endif /* READ */ diff --git a/project/jni/png/pngrutil.c b/project/jni/png/pngrutil.c deleted file mode 100644 index 8692933bd..000000000 --- a/project/jni/png/pngrutil.c +++ /dev/null @@ -1,4661 +0,0 @@ - -/* pngrutil.c - utilities to read a PNG file - * - * Last changed in libpng 1.6.33 [September 28, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file contains routines that are only called from within - * libpng itself during the course of reading an image. - */ - -#include "pngpriv.h" - -#ifdef PNG_READ_SUPPORTED - -png_uint_32 PNGAPI -png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf) -{ - png_uint_32 uval = png_get_uint_32(buf); - - if (uval > PNG_UINT_31_MAX) - png_error(png_ptr, "PNG unsigned integer out of range"); - - return (uval); -} - -#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED) -/* The following is a variation on the above for use with the fixed - * point values used for gAMA and cHRM. Instead of png_error it - * issues a warning and returns (-1) - an invalid value because both - * gAMA and cHRM use *unsigned* integers for fixed point values. - */ -#define PNG_FIXED_ERROR (-1) - -static png_fixed_point /* PRIVATE */ -png_get_fixed_point(png_structrp png_ptr, png_const_bytep buf) -{ - png_uint_32 uval = png_get_uint_32(buf); - - if (uval <= PNG_UINT_31_MAX) - return (png_fixed_point)uval; /* known to be in range */ - - /* The caller can turn off the warning by passing NULL. */ - if (png_ptr != NULL) - png_warning(png_ptr, "PNG fixed point integer out of range"); - - return PNG_FIXED_ERROR; -} -#endif - -#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED -/* NOTE: the read macros will obscure these definitions, so that if - * PNG_USE_READ_MACROS is set the library will not use them internally, - * but the APIs will still be available externally. - * - * The parentheses around "PNGAPI function_name" in the following three - * functions are necessary because they allow the macros to co-exist with - * these (unused but exported) functions. - */ - -/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */ -png_uint_32 (PNGAPI -png_get_uint_32)(png_const_bytep buf) -{ - png_uint_32 uval = - ((png_uint_32)(*(buf )) << 24) + - ((png_uint_32)(*(buf + 1)) << 16) + - ((png_uint_32)(*(buf + 2)) << 8) + - ((png_uint_32)(*(buf + 3)) ) ; - - return uval; -} - -/* Grab a signed 32-bit integer from a buffer in big-endian format. The - * data is stored in the PNG file in two's complement format and there - * is no guarantee that a 'png_int_32' is exactly 32 bits, therefore - * the following code does a two's complement to native conversion. - */ -png_int_32 (PNGAPI -png_get_int_32)(png_const_bytep buf) -{ - png_uint_32 uval = png_get_uint_32(buf); - if ((uval & 0x80000000) == 0) /* non-negative */ - return (png_int_32)uval; - - uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */ - if ((uval & 0x80000000) == 0) /* no overflow */ - return -(png_int_32)uval; - /* The following has to be safe; this function only gets called on PNG data - * and if we get here that data is invalid. 0 is the most safe value and - * if not then an attacker would surely just generate a PNG with 0 instead. - */ - return 0; -} - -/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */ -png_uint_16 (PNGAPI -png_get_uint_16)(png_const_bytep buf) -{ - /* ANSI-C requires an int value to accomodate at least 16 bits so this - * works and allows the compiler not to worry about possible narrowing - * on 32-bit systems. (Pre-ANSI systems did not make integers smaller - * than 16 bits either.) - */ - unsigned int val = - ((unsigned int)(*buf) << 8) + - ((unsigned int)(*(buf + 1))); - - return (png_uint_16)val; -} - -#endif /* READ_INT_FUNCTIONS */ - -/* Read and check the PNG file signature */ -void /* PRIVATE */ -png_read_sig(png_structrp png_ptr, png_inforp info_ptr) -{ - png_size_t num_checked, num_to_check; - - /* Exit if the user application does not expect a signature. */ - if (png_ptr->sig_bytes >= 8) - return; - - num_checked = png_ptr->sig_bytes; - num_to_check = 8 - num_checked; - -#ifdef PNG_IO_STATE_SUPPORTED - png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE; -#endif - - /* The signature must be serialized in a single I/O call. */ - png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check); - png_ptr->sig_bytes = 8; - - if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check) != 0) - { - if (num_checked < 4 && - png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4)) - png_error(png_ptr, "Not a PNG file"); - else - png_error(png_ptr, "PNG file corrupted by ASCII conversion"); - } - if (num_checked < 3) - png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE; -} - -/* Read the chunk header (length + type name). - * Put the type name into png_ptr->chunk_name, and return the length. - */ -png_uint_32 /* PRIVATE */ -png_read_chunk_header(png_structrp png_ptr) -{ - png_byte buf[8]; - png_uint_32 length; - -#ifdef PNG_IO_STATE_SUPPORTED - png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR; -#endif - - /* Read the length and the chunk name. - * This must be performed in a single I/O call. - */ - png_read_data(png_ptr, buf, 8); - length = png_get_uint_31(png_ptr, buf); - - /* Put the chunk name into png_ptr->chunk_name. */ - png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4); - - png_debug2(0, "Reading %lx chunk, length = %lu", - (unsigned long)png_ptr->chunk_name, (unsigned long)length); - - /* Reset the crc and run it over the chunk name. */ - png_reset_crc(png_ptr); - png_calculate_crc(png_ptr, buf + 4, 4); - - /* Check to see if chunk name is valid. */ - png_check_chunk_name(png_ptr, png_ptr->chunk_name); - - /* Check for too-large chunk length */ - png_check_chunk_length(png_ptr, length); - -#ifdef PNG_IO_STATE_SUPPORTED - png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA; -#endif - - return length; -} - -/* Read data, and (optionally) run it through the CRC. */ -void /* PRIVATE */ -png_crc_read(png_structrp png_ptr, png_bytep buf, png_uint_32 length) -{ - if (png_ptr == NULL) - return; - - png_read_data(png_ptr, buf, length); - png_calculate_crc(png_ptr, buf, length); -} - -/* Optionally skip data and then check the CRC. Depending on whether we - * are reading an ancillary or critical chunk, and how the program has set - * things up, we may calculate the CRC on the data and print a message. - * Returns '1' if there was a CRC error, '0' otherwise. - */ -int /* PRIVATE */ -png_crc_finish(png_structrp png_ptr, png_uint_32 skip) -{ - /* The size of the local buffer for inflate is a good guess as to a - * reasonable size to use for buffering reads from the application. - */ - while (skip > 0) - { - png_uint_32 len; - png_byte tmpbuf[PNG_INFLATE_BUF_SIZE]; - - len = (sizeof tmpbuf); - if (len > skip) - len = skip; - skip -= len; - - png_crc_read(png_ptr, tmpbuf, len); - } - - if (png_crc_error(png_ptr) != 0) - { - if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0 ? - (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0 : - (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE) != 0) - { - png_chunk_warning(png_ptr, "CRC error"); - } - - else - png_chunk_error(png_ptr, "CRC error"); - - return (1); - } - - return (0); -} - -/* Compare the CRC stored in the PNG file with that calculated by libpng from - * the data it has read thus far. - */ -int /* PRIVATE */ -png_crc_error(png_structrp png_ptr) -{ - png_byte crc_bytes[4]; - png_uint_32 crc; - int need_crc = 1; - - if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) != 0) - { - if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) == - (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN)) - need_crc = 0; - } - - else /* critical */ - { - if ((png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE) != 0) - need_crc = 0; - } - -#ifdef PNG_IO_STATE_SUPPORTED - png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC; -#endif - - /* The chunk CRC must be serialized in a single I/O call. */ - png_read_data(png_ptr, crc_bytes, 4); - - if (need_crc != 0) - { - crc = png_get_uint_32(crc_bytes); - return ((int)(crc != png_ptr->crc)); - } - - else - return (0); -} - -#if defined(PNG_READ_iCCP_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) ||\ - defined(PNG_READ_pCAL_SUPPORTED) || defined(PNG_READ_sCAL_SUPPORTED) ||\ - defined(PNG_READ_sPLT_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) ||\ - defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_SEQUENTIAL_READ_SUPPORTED) -/* Manage the read buffer; this simply reallocates the buffer if it is not small - * enough (or if it is not allocated). The routine returns a pointer to the - * buffer; if an error occurs and 'warn' is set the routine returns NULL, else - * it will call png_error (via png_malloc) on failure. (warn == 2 means - * 'silent'). - */ -static png_bytep -png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn) -{ - png_bytep buffer = png_ptr->read_buffer; - - if (buffer != NULL && new_size > png_ptr->read_buffer_size) - { - png_ptr->read_buffer = NULL; - png_ptr->read_buffer = NULL; - png_ptr->read_buffer_size = 0; - png_free(png_ptr, buffer); - buffer = NULL; - } - - if (buffer == NULL) - { - buffer = png_voidcast(png_bytep, png_malloc_base(png_ptr, new_size)); - - if (buffer != NULL) - { - memset(buffer, 0, new_size); /* just in case */ - png_ptr->read_buffer = buffer; - png_ptr->read_buffer_size = new_size; - } - - else if (warn < 2) /* else silent */ - { - if (warn != 0) - png_chunk_warning(png_ptr, "insufficient memory to read chunk"); - - else - png_chunk_error(png_ptr, "insufficient memory to read chunk"); - } - } - - return buffer; -} -#endif /* READ_iCCP|iTXt|pCAL|sCAL|sPLT|tEXt|zTXt|SEQUENTIAL_READ */ - -/* png_inflate_claim: claim the zstream for some nefarious purpose that involves - * decompression. Returns Z_OK on success, else a zlib error code. It checks - * the owner but, in final release builds, just issues a warning if some other - * chunk apparently owns the stream. Prior to release it does a png_error. - */ -static int -png_inflate_claim(png_structrp png_ptr, png_uint_32 owner) -{ - if (png_ptr->zowner != 0) - { - char msg[64]; - - PNG_STRING_FROM_CHUNK(msg, png_ptr->zowner); - /* So the message that results is " using zstream"; this is an - * internal error, but is very useful for debugging. i18n requirements - * are minimal. - */ - (void)png_safecat(msg, (sizeof msg), 4, " using zstream"); -#if PNG_RELEASE_BUILD - png_chunk_warning(png_ptr, msg); - png_ptr->zowner = 0; -#else - png_chunk_error(png_ptr, msg); -#endif - } - - /* Implementation note: unlike 'png_deflate_claim' this internal function - * does not take the size of the data as an argument. Some efficiency could - * be gained by using this when it is known *if* the zlib stream itself does - * not record the number; however, this is an illusion: the original writer - * of the PNG may have selected a lower window size, and we really must - * follow that because, for systems with with limited capabilities, we - * would otherwise reject the application's attempts to use a smaller window - * size (zlib doesn't have an interface to say "this or lower"!). - * - * inflateReset2 was added to zlib 1.2.4; before this the window could not be - * reset, therefore it is necessary to always allocate the maximum window - * size with earlier zlibs just in case later compressed chunks need it. - */ - { - int ret; /* zlib return code */ -#if ZLIB_VERNUM >= 0x1240 - int window_bits = 0; - -# if defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_MAXIMUM_INFLATE_WINDOW) - if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) == - PNG_OPTION_ON) - { - window_bits = 15; - png_ptr->zstream_start = 0; /* fixed window size */ - } - - else - { - png_ptr->zstream_start = 1; - } -# endif - -#endif /* ZLIB_VERNUM >= 0x1240 */ - - /* Set this for safety, just in case the previous owner left pointers to - * memory allocations. - */ - png_ptr->zstream.next_in = NULL; - png_ptr->zstream.avail_in = 0; - png_ptr->zstream.next_out = NULL; - png_ptr->zstream.avail_out = 0; - - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0) - { -#if ZLIB_VERNUM >= 0x1240 - ret = inflateReset2(&png_ptr->zstream, window_bits); -#else - ret = inflateReset(&png_ptr->zstream); -#endif - } - - else - { -#if ZLIB_VERNUM >= 0x1240 - ret = inflateInit2(&png_ptr->zstream, window_bits); -#else - ret = inflateInit(&png_ptr->zstream); -#endif - - if (ret == Z_OK) - png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; - } - -#if ZLIB_VERNUM >= 0x1290 && \ - defined(PNG_SET_OPTION_SUPPORTED) && defined(PNG_IGNORE_ADLER32) - if (((png_ptr->options >> PNG_IGNORE_ADLER32) & 3) == PNG_OPTION_ON) - /* Turn off validation of the ADLER32 checksum in IDAT chunks */ - ret = inflateValidate(&png_ptr->zstream, 0); -#endif - - if (ret == Z_OK) - png_ptr->zowner = owner; - - else - png_zstream_error(png_ptr, ret); - - return ret; - } - -#ifdef window_bits -# undef window_bits -#endif -} - -#if ZLIB_VERNUM >= 0x1240 -/* Handle the start of the inflate stream if we called inflateInit2(strm,0); - * in this case some zlib versions skip validation of the CINFO field and, in - * certain circumstances, libpng may end up displaying an invalid image, in - * contrast to implementations that call zlib in the normal way (e.g. libpng - * 1.5). - */ -int /* PRIVATE */ -png_zlib_inflate(png_structrp png_ptr, int flush) -{ - if (png_ptr->zstream_start && png_ptr->zstream.avail_in > 0) - { - if ((*png_ptr->zstream.next_in >> 4) > 7) - { - png_ptr->zstream.msg = "invalid window size (libpng)"; - return Z_DATA_ERROR; - } - - png_ptr->zstream_start = 0; - } - - return inflate(&png_ptr->zstream, flush); -} -#endif /* Zlib >= 1.2.4 */ - -#ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED -#if defined(PNG_READ_zTXt_SUPPORTED) || defined (PNG_READ_iTXt_SUPPORTED) -/* png_inflate now returns zlib error codes including Z_OK and Z_STREAM_END to - * allow the caller to do multiple calls if required. If the 'finish' flag is - * set Z_FINISH will be passed to the final inflate() call and Z_STREAM_END must - * be returned or there has been a problem, otherwise Z_SYNC_FLUSH is used and - * Z_OK or Z_STREAM_END will be returned on success. - * - * The input and output sizes are updated to the actual amounts of data consumed - * or written, not the amount available (as in a z_stream). The data pointers - * are not changed, so the next input is (data+input_size) and the next - * available output is (output+output_size). - */ -static int -png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish, - /* INPUT: */ png_const_bytep input, png_uint_32p input_size_ptr, - /* OUTPUT: */ png_bytep output, png_alloc_size_t *output_size_ptr) -{ - if (png_ptr->zowner == owner) /* Else not claimed */ - { - int ret; - png_alloc_size_t avail_out = *output_size_ptr; - png_uint_32 avail_in = *input_size_ptr; - - /* zlib can't necessarily handle more than 65535 bytes at once (i.e. it - * can't even necessarily handle 65536 bytes) because the type uInt is - * "16 bits or more". Consequently it is necessary to chunk the input to - * zlib. This code uses ZLIB_IO_MAX, from pngpriv.h, as the maximum (the - * maximum value that can be stored in a uInt.) It is possible to set - * ZLIB_IO_MAX to a lower value in pngpriv.h and this may sometimes have - * a performance advantage, because it reduces the amount of data accessed - * at each step and that may give the OS more time to page it in. - */ - png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input); - /* avail_in and avail_out are set below from 'size' */ - png_ptr->zstream.avail_in = 0; - png_ptr->zstream.avail_out = 0; - - /* Read directly into the output if it is available (this is set to - * a local buffer below if output is NULL). - */ - if (output != NULL) - png_ptr->zstream.next_out = output; - - do - { - uInt avail; - Byte local_buffer[PNG_INFLATE_BUF_SIZE]; - - /* zlib INPUT BUFFER */ - /* The setting of 'avail_in' used to be outside the loop; by setting it - * inside it is possible to chunk the input to zlib and simply rely on - * zlib to advance the 'next_in' pointer. This allows arbitrary - * amounts of data to be passed through zlib at the unavoidable cost of - * requiring a window save (memcpy of up to 32768 output bytes) - * every ZLIB_IO_MAX input bytes. - */ - avail_in += png_ptr->zstream.avail_in; /* not consumed last time */ - - avail = ZLIB_IO_MAX; - - if (avail_in < avail) - avail = (uInt)avail_in; /* safe: < than ZLIB_IO_MAX */ - - avail_in -= avail; - png_ptr->zstream.avail_in = avail; - - /* zlib OUTPUT BUFFER */ - avail_out += png_ptr->zstream.avail_out; /* not written last time */ - - avail = ZLIB_IO_MAX; /* maximum zlib can process */ - - if (output == NULL) - { - /* Reset the output buffer each time round if output is NULL and - * make available the full buffer, up to 'remaining_space' - */ - png_ptr->zstream.next_out = local_buffer; - if ((sizeof local_buffer) < avail) - avail = (sizeof local_buffer); - } - - if (avail_out < avail) - avail = (uInt)avail_out; /* safe: < ZLIB_IO_MAX */ - - png_ptr->zstream.avail_out = avail; - avail_out -= avail; - - /* zlib inflate call */ - /* In fact 'avail_out' may be 0 at this point, that happens at the end - * of the read when the final LZ end code was not passed at the end of - * the previous chunk of input data. Tell zlib if we have reached the - * end of the output buffer. - */ - ret = PNG_INFLATE(png_ptr, avail_out > 0 ? Z_NO_FLUSH : - (finish ? Z_FINISH : Z_SYNC_FLUSH)); - } while (ret == Z_OK); - - /* For safety kill the local buffer pointer now */ - if (output == NULL) - png_ptr->zstream.next_out = NULL; - - /* Claw back the 'size' and 'remaining_space' byte counts. */ - avail_in += png_ptr->zstream.avail_in; - avail_out += png_ptr->zstream.avail_out; - - /* Update the input and output sizes; the updated values are the amount - * consumed or written, effectively the inverse of what zlib uses. - */ - if (avail_out > 0) - *output_size_ptr -= avail_out; - - if (avail_in > 0) - *input_size_ptr -= avail_in; - - /* Ensure png_ptr->zstream.msg is set (even in the success case!) */ - png_zstream_error(png_ptr, ret); - return ret; - } - - else - { - /* This is a bad internal error. The recovery assigns to the zstream msg - * pointer, which is not owned by the caller, but this is safe; it's only - * used on errors! - */ - png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); - return Z_STREAM_ERROR; - } -} - -/* - * Decompress trailing data in a chunk. The assumption is that read_buffer - * points at an allocated area holding the contents of a chunk with a - * trailing compressed part. What we get back is an allocated area - * holding the original prefix part and an uncompressed version of the - * trailing part (the malloc area passed in is freed). - */ -static int -png_decompress_chunk(png_structrp png_ptr, - png_uint_32 chunklength, png_uint_32 prefix_size, - png_alloc_size_t *newlength /* must be initialized to the maximum! */, - int terminate /*add a '\0' to the end of the uncompressed data*/) -{ - /* TODO: implement different limits for different types of chunk. - * - * The caller supplies *newlength set to the maximum length of the - * uncompressed data, but this routine allocates space for the prefix and - * maybe a '\0' terminator too. We have to assume that 'prefix_size' is - * limited only by the maximum chunk size. - */ - png_alloc_size_t limit = PNG_SIZE_MAX; - -# ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_malloc_max > 0 && - png_ptr->user_chunk_malloc_max < limit) - limit = png_ptr->user_chunk_malloc_max; -# elif PNG_USER_CHUNK_MALLOC_MAX > 0 - if (PNG_USER_CHUNK_MALLOC_MAX < limit) - limit = PNG_USER_CHUNK_MALLOC_MAX; -# endif - - if (limit >= prefix_size + (terminate != 0)) - { - int ret; - - limit -= prefix_size + (terminate != 0); - - if (limit < *newlength) - *newlength = limit; - - /* Now try to claim the stream. */ - ret = png_inflate_claim(png_ptr, png_ptr->chunk_name); - - if (ret == Z_OK) - { - png_uint_32 lzsize = chunklength - prefix_size; - - ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, - /* input: */ png_ptr->read_buffer + prefix_size, &lzsize, - /* output: */ NULL, newlength); - - if (ret == Z_STREAM_END) - { - /* Use 'inflateReset' here, not 'inflateReset2' because this - * preserves the previously decided window size (otherwise it would - * be necessary to store the previous window size.) In practice - * this doesn't matter anyway, because png_inflate will call inflate - * with Z_FINISH in almost all cases, so the window will not be - * maintained. - */ - if (inflateReset(&png_ptr->zstream) == Z_OK) - { - /* Because of the limit checks above we know that the new, - * expanded, size will fit in a size_t (let alone an - * png_alloc_size_t). Use png_malloc_base here to avoid an - * extra OOM message. - */ - png_alloc_size_t new_size = *newlength; - png_alloc_size_t buffer_size = prefix_size + new_size + - (terminate != 0); - png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr, - buffer_size)); - - if (text != NULL) - { - memset(text, 0, buffer_size); - - ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/, - png_ptr->read_buffer + prefix_size, &lzsize, - text + prefix_size, newlength); - - if (ret == Z_STREAM_END) - { - if (new_size == *newlength) - { - if (terminate != 0) - text[prefix_size + *newlength] = 0; - - if (prefix_size > 0) - memcpy(text, png_ptr->read_buffer, prefix_size); - - { - png_bytep old_ptr = png_ptr->read_buffer; - - png_ptr->read_buffer = text; - png_ptr->read_buffer_size = buffer_size; - text = old_ptr; /* freed below */ - } - } - - else - { - /* The size changed on the second read, there can be no - * guarantee that anything is correct at this point. - * The 'msg' pointer has been set to "unexpected end of - * LZ stream", which is fine, but return an error code - * that the caller won't accept. - */ - ret = PNG_UNEXPECTED_ZLIB_RETURN; - } - } - - else if (ret == Z_OK) - ret = PNG_UNEXPECTED_ZLIB_RETURN; /* for safety */ - - /* Free the text pointer (this is the old read_buffer on - * success) - */ - png_free(png_ptr, text); - - /* This really is very benign, but it's still an error because - * the extra space may otherwise be used as a Trojan Horse. - */ - if (ret == Z_STREAM_END && - chunklength - prefix_size != lzsize) - png_chunk_benign_error(png_ptr, "extra compressed data"); - } - - else - { - /* Out of memory allocating the buffer */ - ret = Z_MEM_ERROR; - png_zstream_error(png_ptr, Z_MEM_ERROR); - } - } - - else - { - /* inflateReset failed, store the error message */ - png_zstream_error(png_ptr, ret); - ret = PNG_UNEXPECTED_ZLIB_RETURN; - } - } - - else if (ret == Z_OK) - ret = PNG_UNEXPECTED_ZLIB_RETURN; - - /* Release the claimed stream */ - png_ptr->zowner = 0; - } - - else /* the claim failed */ if (ret == Z_STREAM_END) /* impossible! */ - ret = PNG_UNEXPECTED_ZLIB_RETURN; - - return ret; - } - - else - { - /* Application/configuration limits exceeded */ - png_zstream_error(png_ptr, Z_MEM_ERROR); - return Z_MEM_ERROR; - } -} -#endif /* READ_zTXt || READ_iTXt */ -#endif /* READ_COMPRESSED_TEXT */ - -#ifdef PNG_READ_iCCP_SUPPORTED -/* Perform a partial read and decompress, producing 'avail_out' bytes and - * reading from the current chunk as required. - */ -static int -png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size, - png_uint_32p chunk_bytes, png_bytep next_out, png_alloc_size_t *out_size, - int finish) -{ - if (png_ptr->zowner == png_ptr->chunk_name) - { - int ret; - - /* next_in and avail_in must have been initialized by the caller. */ - png_ptr->zstream.next_out = next_out; - png_ptr->zstream.avail_out = 0; /* set in the loop */ - - do - { - if (png_ptr->zstream.avail_in == 0) - { - if (read_size > *chunk_bytes) - read_size = (uInt)*chunk_bytes; - *chunk_bytes -= read_size; - - if (read_size > 0) - png_crc_read(png_ptr, read_buffer, read_size); - - png_ptr->zstream.next_in = read_buffer; - png_ptr->zstream.avail_in = read_size; - } - - if (png_ptr->zstream.avail_out == 0) - { - uInt avail = ZLIB_IO_MAX; - if (avail > *out_size) - avail = (uInt)*out_size; - *out_size -= avail; - - png_ptr->zstream.avail_out = avail; - } - - /* Use Z_SYNC_FLUSH when there is no more chunk data to ensure that all - * the available output is produced; this allows reading of truncated - * streams. - */ - ret = PNG_INFLATE(png_ptr, *chunk_bytes > 0 ? - Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH)); - } - while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0)); - - *out_size += png_ptr->zstream.avail_out; - png_ptr->zstream.avail_out = 0; /* Should not be required, but is safe */ - - /* Ensure the error message pointer is always set: */ - png_zstream_error(png_ptr, ret); - return ret; - } - - else - { - png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed"); - return Z_STREAM_ERROR; - } -} -#endif /* READ_iCCP */ - -/* Read and check the IDHR chunk */ - -void /* PRIVATE */ -png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte buf[13]; - png_uint_32 width, height; - int bit_depth, color_type, compression_type, filter_type; - int interlace_type; - - png_debug(1, "in png_handle_IHDR"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) != 0) - png_chunk_error(png_ptr, "out of place"); - - /* Check the length */ - if (length != 13) - png_chunk_error(png_ptr, "invalid"); - - png_ptr->mode |= PNG_HAVE_IHDR; - - png_crc_read(png_ptr, buf, 13); - png_crc_finish(png_ptr, 0); - - width = png_get_uint_31(png_ptr, buf); - height = png_get_uint_31(png_ptr, buf + 4); - bit_depth = buf[8]; - color_type = buf[9]; - compression_type = buf[10]; - filter_type = buf[11]; - interlace_type = buf[12]; - - /* Set internal variables */ - png_ptr->width = width; - png_ptr->height = height; - png_ptr->bit_depth = (png_byte)bit_depth; - png_ptr->interlaced = (png_byte)interlace_type; - png_ptr->color_type = (png_byte)color_type; -#ifdef PNG_MNG_FEATURES_SUPPORTED - png_ptr->filter_type = (png_byte)filter_type; -#endif - png_ptr->compression_type = (png_byte)compression_type; - - /* Find number of channels */ - switch (png_ptr->color_type) - { - default: /* invalid, png_set_IHDR calls png_error */ - case PNG_COLOR_TYPE_GRAY: - case PNG_COLOR_TYPE_PALETTE: - png_ptr->channels = 1; - break; - - case PNG_COLOR_TYPE_RGB: - png_ptr->channels = 3; - break; - - case PNG_COLOR_TYPE_GRAY_ALPHA: - png_ptr->channels = 2; - break; - - case PNG_COLOR_TYPE_RGB_ALPHA: - png_ptr->channels = 4; - break; - } - - /* Set up other useful info */ - png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth * png_ptr->channels); - png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width); - png_debug1(3, "bit_depth = %d", png_ptr->bit_depth); - png_debug1(3, "channels = %d", png_ptr->channels); - png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes); - png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, - color_type, interlace_type, compression_type, filter_type); -} - -/* Read and check the palette */ -void /* PRIVATE */ -png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_color palette[PNG_MAX_PALETTE_LENGTH]; - int max_palette_length, num, i; -#ifdef PNG_POINTER_INDEXING_SUPPORTED - png_colorp pal_ptr; -#endif - - png_debug(1, "in png_handle_PLTE"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - /* Moved to before the 'after IDAT' check below because otherwise duplicate - * PLTE chunks are potentially ignored (the spec says there shall not be more - * than one PLTE, the error is not treated as benign, so this check trumps - * the requirement that PLTE appears before IDAT.) - */ - else if ((png_ptr->mode & PNG_HAVE_PLTE) != 0) - png_chunk_error(png_ptr, "duplicate"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - /* This is benign because the non-benign error happened before, when an - * IDAT was encountered in a color-mapped image with no PLTE. - */ - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - png_ptr->mode |= PNG_HAVE_PLTE; - - if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "ignored in grayscale PNG"); - return; - } - -#ifndef PNG_READ_OPT_PLTE_SUPPORTED - if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) - { - png_crc_finish(png_ptr, length); - return; - } -#endif - - if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3) - { - png_crc_finish(png_ptr, length); - - if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE) - png_chunk_benign_error(png_ptr, "invalid"); - - else - png_chunk_error(png_ptr, "invalid"); - - return; - } - - /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */ - num = (int)length / 3; - - /* If the palette has 256 or fewer entries but is too large for the bit - * depth, we don't issue an error, to preserve the behavior of previous - * libpng versions. We silently truncate the unused extra palette entries - * here. - */ - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - max_palette_length = (1 << png_ptr->bit_depth); - else - max_palette_length = PNG_MAX_PALETTE_LENGTH; - - if (num > max_palette_length) - num = max_palette_length; - -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++) - { - png_byte buf[3]; - - png_crc_read(png_ptr, buf, 3); - pal_ptr->red = buf[0]; - pal_ptr->green = buf[1]; - pal_ptr->blue = buf[2]; - } -#else - for (i = 0; i < num; i++) - { - png_byte buf[3]; - - png_crc_read(png_ptr, buf, 3); - /* Don't depend upon png_color being any order */ - palette[i].red = buf[0]; - palette[i].green = buf[1]; - palette[i].blue = buf[2]; - } -#endif - - /* If we actually need the PLTE chunk (ie for a paletted image), we do - * whatever the normal CRC configuration tells us. However, if we - * have an RGB image, the PLTE can be considered ancillary, so - * we will act as though it is. - */ -#ifndef PNG_READ_OPT_PLTE_SUPPORTED - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) -#endif - { - png_crc_finish(png_ptr, (png_uint_32) (length - (unsigned int)num * 3)); - } - -#ifndef PNG_READ_OPT_PLTE_SUPPORTED - else if (png_crc_error(png_ptr) != 0) /* Only if we have a CRC error */ - { - /* If we don't want to use the data from an ancillary chunk, - * we have two options: an error abort, or a warning and we - * ignore the data in this chunk (which should be OK, since - * it's considered ancillary for a RGB or RGBA image). - * - * IMPLEMENTATION NOTE: this is only here because png_crc_finish uses the - * chunk type to determine whether to check the ancillary or the critical - * flags. - */ - if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE) == 0) - { - if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) != 0) - return; - - else - png_chunk_error(png_ptr, "CRC error"); - } - - /* Otherwise, we (optionally) emit a warning and use the chunk. */ - else if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) == 0) - png_chunk_warning(png_ptr, "CRC error"); - } -#endif - - /* TODO: png_set_PLTE has the side effect of setting png_ptr->palette to its - * own copy of the palette. This has the side effect that when png_start_row - * is called (this happens after any call to png_read_update_info) the - * info_ptr palette gets changed. This is extremely unexpected and - * confusing. - * - * Fix this by not sharing the palette in this way. - */ - png_set_PLTE(png_ptr, info_ptr, palette, num); - - /* The three chunks, bKGD, hIST and tRNS *must* appear after PLTE and before - * IDAT. Prior to 1.6.0 this was not checked; instead the code merely - * checked the apparent validity of a tRNS chunk inserted before PLTE on a - * palette PNG. 1.6.0 attempts to rigorously follow the standard and - * therefore does a benign error if the erroneous condition is detected *and* - * cancels the tRNS if the benign error returns. The alternative is to - * amend the standard since it would be rather hypocritical of the standards - * maintainers to ignore it. - */ -#ifdef PNG_READ_tRNS_SUPPORTED - if (png_ptr->num_trans > 0 || - (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS) != 0)) - { - /* Cancel this because otherwise it would be used if the transforms - * require it. Don't cancel the 'valid' flag because this would prevent - * detection of duplicate chunks. - */ - png_ptr->num_trans = 0; - - if (info_ptr != NULL) - info_ptr->num_trans = 0; - - png_chunk_benign_error(png_ptr, "tRNS must be after"); - } -#endif - -#ifdef PNG_READ_hIST_SUPPORTED - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) != 0) - png_chunk_benign_error(png_ptr, "hIST must be after"); -#endif - -#ifdef PNG_READ_bKGD_SUPPORTED - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) != 0) - png_chunk_benign_error(png_ptr, "bKGD must be after"); -#endif -} - -void /* PRIVATE */ -png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_debug(1, "in png_handle_IEND"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0 || - (png_ptr->mode & PNG_HAVE_IDAT) == 0) - png_chunk_error(png_ptr, "out of place"); - - png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND); - - png_crc_finish(png_ptr, length); - - if (length != 0) - png_chunk_benign_error(png_ptr, "invalid"); - - PNG_UNUSED(info_ptr) -} - -#ifdef PNG_READ_gAMA_SUPPORTED -void /* PRIVATE */ -png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_fixed_point igamma; - png_byte buf[4]; - - png_debug(1, "in png_handle_gAMA"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - if (length != 4) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, 4); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - igamma = png_get_fixed_point(NULL, buf); - - png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma); - png_colorspace_sync(png_ptr, info_ptr); -} -#endif - -#ifdef PNG_READ_sBIT_SUPPORTED -void /* PRIVATE */ -png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - unsigned int truelen, i; - png_byte sample_depth; - png_byte buf[4]; - - png_debug(1, "in png_handle_sBIT"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - truelen = 3; - sample_depth = 8; - } - - else - { - truelen = png_ptr->channels; - sample_depth = png_ptr->bit_depth; - } - - if (length != truelen || length > 4) - { - png_chunk_benign_error(png_ptr, "invalid"); - png_crc_finish(png_ptr, length); - return; - } - - buf[0] = buf[1] = buf[2] = buf[3] = sample_depth; - png_crc_read(png_ptr, buf, truelen); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - for (i=0; i sample_depth) - { - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - } - - if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - png_ptr->sig_bit.red = buf[0]; - png_ptr->sig_bit.green = buf[1]; - png_ptr->sig_bit.blue = buf[2]; - png_ptr->sig_bit.alpha = buf[3]; - } - - else - { - png_ptr->sig_bit.gray = buf[0]; - png_ptr->sig_bit.red = buf[0]; - png_ptr->sig_bit.green = buf[0]; - png_ptr->sig_bit.blue = buf[0]; - png_ptr->sig_bit.alpha = buf[1]; - } - - png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit)); -} -#endif - -#ifdef PNG_READ_cHRM_SUPPORTED -void /* PRIVATE */ -png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte buf[32]; - png_xy xy; - - png_debug(1, "in png_handle_cHRM"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - if (length != 32) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, 32); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - xy.whitex = png_get_fixed_point(NULL, buf); - xy.whitey = png_get_fixed_point(NULL, buf + 4); - xy.redx = png_get_fixed_point(NULL, buf + 8); - xy.redy = png_get_fixed_point(NULL, buf + 12); - xy.greenx = png_get_fixed_point(NULL, buf + 16); - xy.greeny = png_get_fixed_point(NULL, buf + 20); - xy.bluex = png_get_fixed_point(NULL, buf + 24); - xy.bluey = png_get_fixed_point(NULL, buf + 28); - - if (xy.whitex == PNG_FIXED_ERROR || - xy.whitey == PNG_FIXED_ERROR || - xy.redx == PNG_FIXED_ERROR || - xy.redy == PNG_FIXED_ERROR || - xy.greenx == PNG_FIXED_ERROR || - xy.greeny == PNG_FIXED_ERROR || - xy.bluex == PNG_FIXED_ERROR || - xy.bluey == PNG_FIXED_ERROR) - { - png_chunk_benign_error(png_ptr, "invalid values"); - return; - } - - /* If a colorspace error has already been output skip this chunk */ - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) - return; - - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) != 0) - { - png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; - png_colorspace_sync(png_ptr, info_ptr); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; - (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy, - 1/*prefer cHRM values*/); - png_colorspace_sync(png_ptr, info_ptr); -} -#endif - -#ifdef PNG_READ_sRGB_SUPPORTED -void /* PRIVATE */ -png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte intent; - - png_debug(1, "in png_handle_sRGB"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - if (length != 1) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, &intent, 1); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - /* If a colorspace error has already been output skip this chunk */ - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) - return; - - /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect - * this. - */ - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) != 0) - { - png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; - png_colorspace_sync(png_ptr, info_ptr); - png_chunk_benign_error(png_ptr, "too many profiles"); - return; - } - - (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent); - png_colorspace_sync(png_ptr, info_ptr); -} -#endif /* READ_sRGB */ - -#ifdef PNG_READ_iCCP_SUPPORTED -void /* PRIVATE */ -png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -/* Note: this does not properly handle profiles that are > 64K under DOS */ -{ - png_const_charp errmsg = NULL; /* error message output, or no error */ - int finished = 0; /* crc checked */ - - png_debug(1, "in png_handle_iCCP"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE)) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - /* Consistent with all the above colorspace handling an obviously *invalid* - * chunk is just ignored, so does not invalidate the color space. An - * alternative is to set the 'invalid' flags at the start of this routine - * and only clear them in they were not set before and all the tests pass. - */ - - /* The keyword must be at least one character and there is a - * terminator (0) byte and the compression method byte, and the - * 'zlib' datastream is at least 11 bytes. - */ - if (length < 14) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "too short"); - return; - } - - /* If a colorspace error has already been output skip this chunk */ - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) != 0) - { - png_crc_finish(png_ptr, length); - return; - } - - /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect - * this. - */ - if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0) - { - uInt read_length, keyword_length; - char keyword[81]; - - /* Find the keyword; the keyword plus separator and compression method - * bytes can be at most 81 characters long. - */ - read_length = 81; /* maximum */ - if (read_length > length) - read_length = (uInt)length; - - png_crc_read(png_ptr, (png_bytep)keyword, read_length); - length -= read_length; - - /* The minimum 'zlib' stream is assumed to be just the 2 byte header, - * 5 bytes minimum 'deflate' stream, and the 4 byte checksum. - */ - if (length < 11) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "too short"); - return; - } - - keyword_length = 0; - while (keyword_length < 80 && keyword_length < read_length && - keyword[keyword_length] != 0) - ++keyword_length; - - /* TODO: make the keyword checking common */ - if (keyword_length >= 1 && keyword_length <= 79) - { - /* We only understand '0' compression - deflate - so if we get a - * different value we can't safely decode the chunk. - */ - if (keyword_length+1 < read_length && - keyword[keyword_length+1] == PNG_COMPRESSION_TYPE_BASE) - { - read_length -= keyword_length+2; - - if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK) - { - Byte profile_header[132]={0}; - Byte local_buffer[PNG_INFLATE_BUF_SIZE]; - png_alloc_size_t size = (sizeof profile_header); - - png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2); - png_ptr->zstream.avail_in = read_length; - (void)png_inflate_read(png_ptr, local_buffer, - (sizeof local_buffer), &length, profile_header, &size, - 0/*finish: don't, because the output is too small*/); - - if (size == 0) - { - /* We have the ICC profile header; do the basic header checks. - */ - const png_uint_32 profile_length = - png_get_uint_32(profile_header); - - if (png_icc_check_length(png_ptr, &png_ptr->colorspace, - keyword, profile_length) != 0) - { - /* The length is apparently ok, so we can check the 132 - * byte header. - */ - if (png_icc_check_header(png_ptr, &png_ptr->colorspace, - keyword, profile_length, profile_header, - png_ptr->color_type) != 0) - { - /* Now read the tag table; a variable size buffer is - * needed at this point, allocate one for the whole - * profile. The header check has already validated - * that none of this stuff will overflow. - */ - const png_uint_32 tag_count = png_get_uint_32( - profile_header+128); - png_bytep profile = png_read_buffer(png_ptr, - profile_length, 2/*silent*/); - - if (profile != NULL) - { - memcpy(profile, profile_header, - (sizeof profile_header)); - - size = 12 * tag_count; - - (void)png_inflate_read(png_ptr, local_buffer, - (sizeof local_buffer), &length, - profile + (sizeof profile_header), &size, 0); - - /* Still expect a buffer error because we expect - * there to be some tag data! - */ - if (size == 0) - { - if (png_icc_check_tag_table(png_ptr, - &png_ptr->colorspace, keyword, profile_length, - profile) != 0) - { - /* The profile has been validated for basic - * security issues, so read the whole thing in. - */ - size = profile_length - (sizeof profile_header) - - 12 * tag_count; - - (void)png_inflate_read(png_ptr, local_buffer, - (sizeof local_buffer), &length, - profile + (sizeof profile_header) + - 12 * tag_count, &size, 1/*finish*/); - - if (length > 0 && !(png_ptr->flags & - PNG_FLAG_BENIGN_ERRORS_WARN)) - errmsg = "extra compressed data"; - - /* But otherwise allow extra data: */ - else if (size == 0) - { - if (length > 0) - { - /* This can be handled completely, so - * keep going. - */ - png_chunk_warning(png_ptr, - "extra compressed data"); - } - - png_crc_finish(png_ptr, length); - finished = 1; - -# if defined(PNG_sRGB_SUPPORTED) && PNG_sRGB_PROFILE_CHECKS >= 0 - /* Check for a match against sRGB */ - png_icc_set_sRGB(png_ptr, - &png_ptr->colorspace, profile, - png_ptr->zstream.adler); -# endif - - /* Steal the profile for info_ptr. */ - if (info_ptr != NULL) - { - png_free_data(png_ptr, info_ptr, - PNG_FREE_ICCP, 0); - - info_ptr->iccp_name = png_voidcast(char*, - png_malloc_base(png_ptr, - keyword_length+1)); - if (info_ptr->iccp_name != NULL) - { - memcpy(info_ptr->iccp_name, keyword, - keyword_length+1); - info_ptr->iccp_proflen = - profile_length; - info_ptr->iccp_profile = profile; - png_ptr->read_buffer = NULL; /*steal*/ - info_ptr->free_me |= PNG_FREE_ICCP; - info_ptr->valid |= PNG_INFO_iCCP; - } - - else - { - png_ptr->colorspace.flags |= - PNG_COLORSPACE_INVALID; - errmsg = "out of memory"; - } - } - - /* else the profile remains in the read - * buffer which gets reused for subsequent - * chunks. - */ - - if (info_ptr != NULL) - png_colorspace_sync(png_ptr, info_ptr); - - if (errmsg == NULL) - { - png_ptr->zowner = 0; - return; - } - } - if (errmsg == NULL) - errmsg = png_ptr->zstream.msg; - } - /* else png_icc_check_tag_table output an error */ - } - else /* profile truncated */ - errmsg = png_ptr->zstream.msg; - } - - else - errmsg = "out of memory"; - } - - /* else png_icc_check_header output an error */ - } - - /* else png_icc_check_length output an error */ - } - - else /* profile truncated */ - errmsg = png_ptr->zstream.msg; - - /* Release the stream */ - png_ptr->zowner = 0; - } - - else /* png_inflate_claim failed */ - errmsg = png_ptr->zstream.msg; - } - - else - errmsg = "bad compression method"; /* or missing */ - } - - else - errmsg = "bad keyword"; - } - - else - errmsg = "too many profiles"; - - /* Failure: the reason is in 'errmsg' */ - if (finished == 0) - png_crc_finish(png_ptr, length); - - png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID; - png_colorspace_sync(png_ptr, info_ptr); - if (errmsg != NULL) /* else already output */ - png_chunk_benign_error(png_ptr, errmsg); -} -#endif /* READ_iCCP */ - -#ifdef PNG_READ_sPLT_SUPPORTED -void /* PRIVATE */ -png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -/* Note: this does not properly handle chunks that are > 64K under DOS */ -{ - png_bytep entry_start, buffer; - png_sPLT_t new_palette; - png_sPLT_entryp pp; - png_uint_32 data_length; - int entry_size, i; - png_uint_32 skip = 0; - png_uint_32 dl; - png_size_t max_dl; - - png_debug(1, "in png_handle_sPLT"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - - if (--png_ptr->user_chunk_cache_max == 1) - { - png_warning(png_ptr, "No space in chunk cache for sPLT"); - png_crc_finish(png_ptr, length); - return; - } - } -#endif - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - -#ifdef PNG_MAX_MALLOC_64K - if (length > 65535U) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "too large to fit in memory"); - return; - } -#endif - - buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); - if (buffer == NULL) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - - /* WARNING: this may break if size_t is less than 32 bits; it is assumed - * that the PNG_MAX_MALLOC_64K test is enabled in this case, but this is a - * potential breakage point if the types in pngconf.h aren't exactly right. - */ - png_crc_read(png_ptr, buffer, length); - - if (png_crc_finish(png_ptr, skip) != 0) - return; - - buffer[length] = 0; - - for (entry_start = buffer; *entry_start; entry_start++) - /* Empty loop to find end of name */ ; - - ++entry_start; - - /* A sample depth should follow the separator, and we should be on it */ - if (length < 2U || entry_start > buffer + (length - 2U)) - { - png_warning(png_ptr, "malformed sPLT chunk"); - return; - } - - new_palette.depth = *entry_start++; - entry_size = (new_palette.depth == 8 ? 6 : 10); - /* This must fit in a png_uint_32 because it is derived from the original - * chunk data length. - */ - data_length = length - (png_uint_32)(entry_start - buffer); - - /* Integrity-check the data length */ - if ((data_length % (unsigned int)entry_size) != 0) - { - png_warning(png_ptr, "sPLT chunk has bad length"); - return; - } - - dl = (png_uint_32)(data_length / (unsigned int)entry_size); - max_dl = PNG_SIZE_MAX / (sizeof (png_sPLT_entry)); - - if (dl > max_dl) - { - png_warning(png_ptr, "sPLT chunk too long"); - return; - } - - new_palette.nentries = (png_int_32)(data_length / (unsigned int)entry_size); - - new_palette.entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, - (png_alloc_size_t) new_palette.nentries * (sizeof (png_sPLT_entry))); - - if (new_palette.entries == NULL) - { - png_warning(png_ptr, "sPLT chunk requires too much memory"); - return; - } - -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (i = 0; i < new_palette.nentries; i++) - { - pp = new_palette.entries + i; - - if (new_palette.depth == 8) - { - pp->red = *entry_start++; - pp->green = *entry_start++; - pp->blue = *entry_start++; - pp->alpha = *entry_start++; - } - - else - { - pp->red = png_get_uint_16(entry_start); entry_start += 2; - pp->green = png_get_uint_16(entry_start); entry_start += 2; - pp->blue = png_get_uint_16(entry_start); entry_start += 2; - pp->alpha = png_get_uint_16(entry_start); entry_start += 2; - } - - pp->frequency = png_get_uint_16(entry_start); entry_start += 2; - } -#else - pp = new_palette.entries; - - for (i = 0; i < new_palette.nentries; i++) - { - - if (new_palette.depth == 8) - { - pp[i].red = *entry_start++; - pp[i].green = *entry_start++; - pp[i].blue = *entry_start++; - pp[i].alpha = *entry_start++; - } - - else - { - pp[i].red = png_get_uint_16(entry_start); entry_start += 2; - pp[i].green = png_get_uint_16(entry_start); entry_start += 2; - pp[i].blue = png_get_uint_16(entry_start); entry_start += 2; - pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2; - } - - pp[i].frequency = png_get_uint_16(entry_start); entry_start += 2; - } -#endif - - /* Discard all chunk data except the name and stash that */ - new_palette.name = (png_charp)buffer; - - png_set_sPLT(png_ptr, info_ptr, &new_palette, 1); - - png_free(png_ptr, new_palette.entries); -} -#endif /* READ_sPLT */ - -#ifdef PNG_READ_tRNS_SUPPORTED -void /* PRIVATE */ -png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte readbuf[PNG_MAX_PALETTE_LENGTH]; - - png_debug(1, "in png_handle_tRNS"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) - { - png_byte buf[2]; - - if (length != 2) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, 2); - png_ptr->num_trans = 1; - png_ptr->trans_color.gray = png_get_uint_16(buf); - } - - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) - { - png_byte buf[6]; - - if (length != 6) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, length); - png_ptr->num_trans = 1; - png_ptr->trans_color.red = png_get_uint_16(buf); - png_ptr->trans_color.green = png_get_uint_16(buf + 2); - png_ptr->trans_color.blue = png_get_uint_16(buf + 4); - } - - else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if ((png_ptr->mode & PNG_HAVE_PLTE) == 0) - { - /* TODO: is this actually an error in the ISO spec? */ - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - if (length > (unsigned int) png_ptr->num_palette || - length > (unsigned int) PNG_MAX_PALETTE_LENGTH || - length == 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, readbuf, length); - png_ptr->num_trans = (png_uint_16)length; - } - - else - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid with alpha channel"); - return; - } - - if (png_crc_finish(png_ptr, 0) != 0) - { - png_ptr->num_trans = 0; - return; - } - - /* TODO: this is a horrible side effect in the palette case because the - * png_struct ends up with a pointer to the tRNS buffer owned by the - * png_info. Fix this. - */ - png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans, - &(png_ptr->trans_color)); -} -#endif - -#ifdef PNG_READ_bKGD_SUPPORTED -void /* PRIVATE */ -png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - unsigned int truelen; - png_byte buf[6]; - png_color_16 background; - - png_debug(1, "in png_handle_bKGD"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 || - (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - (png_ptr->mode & PNG_HAVE_PLTE) == 0)) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - truelen = 1; - - else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - truelen = 6; - - else - truelen = 2; - - if (length != truelen) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, truelen); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - /* We convert the index value into RGB components so that we can allow - * arbitrary RGB values for background when we have transparency, and - * so it is easy to determine the RGB values of the background color - * from the info_ptr struct. - */ - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - background.index = buf[0]; - - if (info_ptr != NULL && info_ptr->num_palette != 0) - { - if (buf[0] >= info_ptr->num_palette) - { - png_chunk_benign_error(png_ptr, "invalid index"); - return; - } - - background.red = (png_uint_16)png_ptr->palette[buf[0]].red; - background.green = (png_uint_16)png_ptr->palette[buf[0]].green; - background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue; - } - - else - background.red = background.green = background.blue = 0; - - background.gray = 0; - } - - else if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) /* GRAY */ - { - background.index = 0; - background.red = - background.green = - background.blue = - background.gray = png_get_uint_16(buf); - } - - else - { - background.index = 0; - background.red = png_get_uint_16(buf); - background.green = png_get_uint_16(buf + 2); - background.blue = png_get_uint_16(buf + 4); - background.gray = 0; - } - - png_set_bKGD(png_ptr, info_ptr, &background); -} -#endif - -#ifdef PNG_READ_eXIf_SUPPORTED -void /* PRIVATE */ -png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - unsigned int i; - - png_debug(1, "in png_handle_eXIf"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - if (length < 2) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "too short"); - return; - } - - else if (info_ptr == NULL || (info_ptr->valid & PNG_INFO_eXIf) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - info_ptr->free_me |= PNG_FREE_EXIF; - - info_ptr->eXIf_buf = png_voidcast(png_bytep, - png_malloc_warn(png_ptr, length)); - - if (info_ptr->eXIf_buf == NULL) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - for (i = 0; i < length; i++) - { - png_byte buf[1]; - png_crc_read(png_ptr, buf, 1); - info_ptr->eXIf_buf[i] = buf[0]; - if (i == 1 && buf[0] != 'M' && buf[0] != 'I' - && info_ptr->eXIf_buf[0] != buf[0]) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "incorrect byte-order specifier"); - png_free(png_ptr, info_ptr->eXIf_buf); - info_ptr->eXIf_buf = NULL; - return; - } - } - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf); - - png_free(png_ptr, info_ptr->eXIf_buf); - info_ptr->eXIf_buf = NULL; -} -#endif - -#ifdef PNG_READ_hIST_SUPPORTED -void /* PRIVATE */ -png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - unsigned int num, i; - png_uint_16 readbuf[PNG_MAX_PALETTE_LENGTH]; - - png_debug(1, "in png_handle_hIST"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0 || - (png_ptr->mode & PNG_HAVE_PLTE) == 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - num = length / 2 ; - - if (num != (unsigned int) png_ptr->num_palette || - num > (unsigned int) PNG_MAX_PALETTE_LENGTH) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - for (i = 0; i < num; i++) - { - png_byte buf[2]; - - png_crc_read(png_ptr, buf, 2); - readbuf[i] = png_get_uint_16(buf); - } - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - png_set_hIST(png_ptr, info_ptr, readbuf); -} -#endif - -#ifdef PNG_READ_pHYs_SUPPORTED -void /* PRIVATE */ -png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte buf[9]; - png_uint_32 res_x, res_y; - int unit_type; - - png_debug(1, "in png_handle_pHYs"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - if (length != 9) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, 9); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - res_x = png_get_uint_32(buf); - res_y = png_get_uint_32(buf + 4); - unit_type = buf[8]; - png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type); -} -#endif - -#ifdef PNG_READ_oFFs_SUPPORTED -void /* PRIVATE */ -png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte buf[9]; - png_int_32 offset_x, offset_y; - int unit_type; - - png_debug(1, "in png_handle_oFFs"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - if (length != 9) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, 9); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - offset_x = png_get_int_32(buf); - offset_y = png_get_int_32(buf + 4); - unit_type = buf[8]; - png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type); -} -#endif - -#ifdef PNG_READ_pCAL_SUPPORTED -/* Read the pCAL chunk (described in the PNG Extensions document) */ -void /* PRIVATE */ -png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_int_32 X0, X1; - png_byte type, nparams; - png_bytep buffer, buf, units, endptr; - png_charpp params; - int i; - - png_debug(1, "in png_handle_pCAL"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - png_debug1(2, "Allocating and reading pCAL chunk data (%u bytes)", - length + 1); - - buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); - - if (buffer == NULL) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - png_crc_read(png_ptr, buffer, length); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - buffer[length] = 0; /* Null terminate the last string */ - - png_debug(3, "Finding end of pCAL purpose string"); - for (buf = buffer; *buf; buf++) - /* Empty loop */ ; - - endptr = buffer + length; - - /* We need to have at least 12 bytes after the purpose string - * in order to get the parameter information. - */ - if (endptr - buf <= 12) - { - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_debug(3, "Reading pCAL X0, X1, type, nparams, and units"); - X0 = png_get_int_32((png_bytep)buf+1); - X1 = png_get_int_32((png_bytep)buf+5); - type = buf[9]; - nparams = buf[10]; - units = buf + 11; - - png_debug(3, "Checking pCAL equation type and number of parameters"); - /* Check that we have the right number of parameters for known - * equation types. - */ - if ((type == PNG_EQUATION_LINEAR && nparams != 2) || - (type == PNG_EQUATION_BASE_E && nparams != 3) || - (type == PNG_EQUATION_ARBITRARY && nparams != 3) || - (type == PNG_EQUATION_HYPERBOLIC && nparams != 4)) - { - png_chunk_benign_error(png_ptr, "invalid parameter count"); - return; - } - - else if (type >= PNG_EQUATION_LAST) - { - png_chunk_benign_error(png_ptr, "unrecognized equation type"); - } - - for (buf = units; *buf; buf++) - /* Empty loop to move past the units string. */ ; - - png_debug(3, "Allocating pCAL parameters array"); - - params = png_voidcast(png_charpp, png_malloc_warn(png_ptr, - nparams * (sizeof (png_charp)))); - - if (params == NULL) - { - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - /* Get pointers to the start of each parameter string. */ - for (i = 0; i < nparams; i++) - { - buf++; /* Skip the null string terminator from previous parameter. */ - - png_debug1(3, "Reading pCAL parameter %d", i); - - for (params[i] = (png_charp)buf; buf <= endptr && *buf != 0; buf++) - /* Empty loop to move past each parameter string */ ; - - /* Make sure we haven't run out of data yet */ - if (buf > endptr) - { - png_free(png_ptr, params); - png_chunk_benign_error(png_ptr, "invalid data"); - return; - } - } - - png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams, - (png_charp)units, params); - - png_free(png_ptr, params); -} -#endif - -#ifdef PNG_READ_sCAL_SUPPORTED -/* Read the sCAL chunk */ -void /* PRIVATE */ -png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_bytep buffer; - png_size_t i; - int state; - - png_debug(1, "in png_handle_sCAL"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of place"); - return; - } - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - /* Need unit type, width, \0, height: minimum 4 bytes */ - else if (length < 4) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_debug1(2, "Allocating and reading sCAL chunk data (%u bytes)", - length + 1); - - buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/); - - if (buffer == NULL) - { - png_chunk_benign_error(png_ptr, "out of memory"); - png_crc_finish(png_ptr, length); - return; - } - - png_crc_read(png_ptr, buffer, length); - buffer[length] = 0; /* Null terminate the last string */ - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - /* Validate the unit. */ - if (buffer[0] != 1 && buffer[0] != 2) - { - png_chunk_benign_error(png_ptr, "invalid unit"); - return; - } - - /* Validate the ASCII numbers, need two ASCII numbers separated by - * a '\0' and they need to fit exactly in the chunk data. - */ - i = 1; - state = 0; - - if (png_check_fp_number((png_const_charp)buffer, length, &state, &i) == 0 || - i >= length || buffer[i++] != 0) - png_chunk_benign_error(png_ptr, "bad width format"); - - else if (PNG_FP_IS_POSITIVE(state) == 0) - png_chunk_benign_error(png_ptr, "non-positive width"); - - else - { - png_size_t heighti = i; - - state = 0; - if (png_check_fp_number((png_const_charp)buffer, length, - &state, &i) == 0 || i != length) - png_chunk_benign_error(png_ptr, "bad height format"); - - else if (PNG_FP_IS_POSITIVE(state) == 0) - png_chunk_benign_error(png_ptr, "non-positive height"); - - else - /* This is the (only) success case. */ - png_set_sCAL_s(png_ptr, info_ptr, buffer[0], - (png_charp)buffer+1, (png_charp)buffer+heighti); - } -} -#endif - -#ifdef PNG_READ_tIME_SUPPORTED -void /* PRIVATE */ -png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_byte buf[7]; - png_time mod_time; - - png_debug(1, "in png_handle_tIME"); - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME) != 0) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "duplicate"); - return; - } - - if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - png_ptr->mode |= PNG_AFTER_IDAT; - - if (length != 7) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "invalid"); - return; - } - - png_crc_read(png_ptr, buf, 7); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - mod_time.second = buf[6]; - mod_time.minute = buf[5]; - mod_time.hour = buf[4]; - mod_time.day = buf[3]; - mod_time.month = buf[2]; - mod_time.year = png_get_uint_16(buf); - - png_set_tIME(png_ptr, info_ptr, &mod_time); -} -#endif - -#ifdef PNG_READ_tEXt_SUPPORTED -/* Note: this does not properly handle chunks that are > 64K under DOS */ -void /* PRIVATE */ -png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_text text_info; - png_bytep buffer; - png_charp key; - png_charp text; - png_uint_32 skip = 0; - - png_debug(1, "in png_handle_tEXt"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - - if (--png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "no space in chunk cache"); - return; - } - } -#endif - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - png_ptr->mode |= PNG_AFTER_IDAT; - -#ifdef PNG_MAX_MALLOC_64K - if (length > 65535U) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "too large to fit in memory"); - return; - } -#endif - - buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); - - if (buffer == NULL) - { - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - png_crc_read(png_ptr, buffer, length); - - if (png_crc_finish(png_ptr, skip) != 0) - return; - - key = (png_charp)buffer; - key[length] = 0; - - for (text = key; *text; text++) - /* Empty loop to find end of key */ ; - - if (text != key + length) - text++; - - text_info.compression = PNG_TEXT_COMPRESSION_NONE; - text_info.key = key; - text_info.lang = NULL; - text_info.lang_key = NULL; - text_info.itxt_length = 0; - text_info.text = text; - text_info.text_length = strlen(text); - - if (png_set_text_2(png_ptr, info_ptr, &text_info, 1) != 0) - png_warning(png_ptr, "Insufficient memory to process text chunk"); -} -#endif - -#ifdef PNG_READ_zTXt_SUPPORTED -/* Note: this does not correctly handle chunks that are > 64K under DOS */ -void /* PRIVATE */ -png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_const_charp errmsg = NULL; - png_bytep buffer; - png_uint_32 keyword_length; - - png_debug(1, "in png_handle_zTXt"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - - if (--png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "no space in chunk cache"); - return; - } - } -#endif - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - png_ptr->mode |= PNG_AFTER_IDAT; - - /* Note, "length" is sufficient here; we won't be adding - * a null terminator later. - */ - buffer = png_read_buffer(png_ptr, length, 2/*silent*/); - - if (buffer == NULL) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - png_crc_read(png_ptr, buffer, length); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - /* TODO: also check that the keyword contents match the spec! */ - for (keyword_length = 0; - keyword_length < length && buffer[keyword_length] != 0; - ++keyword_length) - /* Empty loop to find end of name */ ; - - if (keyword_length > 79 || keyword_length < 1) - errmsg = "bad keyword"; - - /* zTXt must have some LZ data after the keyword, although it may expand to - * zero bytes; we need a '\0' at the end of the keyword, the compression type - * then the LZ data: - */ - else if (keyword_length + 3 > length) - errmsg = "truncated"; - - else if (buffer[keyword_length+1] != PNG_COMPRESSION_TYPE_BASE) - errmsg = "unknown compression type"; - - else - { - png_alloc_size_t uncompressed_length = PNG_SIZE_MAX; - - /* TODO: at present png_decompress_chunk imposes a single application - * level memory limit, this should be split to different values for iCCP - * and text chunks. - */ - if (png_decompress_chunk(png_ptr, length, keyword_length+2, - &uncompressed_length, 1/*terminate*/) == Z_STREAM_END) - { - png_text text; - - if (png_ptr->read_buffer == NULL) - errmsg="Read failure in png_handle_zTXt"; - else - { - /* It worked; png_ptr->read_buffer now looks like a tEXt chunk - * except for the extra compression type byte and the fact that - * it isn't necessarily '\0' terminated. - */ - buffer = png_ptr->read_buffer; - buffer[uncompressed_length+(keyword_length+2)] = 0; - - text.compression = PNG_TEXT_COMPRESSION_zTXt; - text.key = (png_charp)buffer; - text.text = (png_charp)(buffer + keyword_length+2); - text.text_length = uncompressed_length; - text.itxt_length = 0; - text.lang = NULL; - text.lang_key = NULL; - - if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0) - errmsg = "insufficient memory"; - } - } - - else - errmsg = png_ptr->zstream.msg; - } - - if (errmsg != NULL) - png_chunk_benign_error(png_ptr, errmsg); -} -#endif - -#ifdef PNG_READ_iTXt_SUPPORTED -/* Note: this does not correctly handle chunks that are > 64K under DOS */ -void /* PRIVATE */ -png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length) -{ - png_const_charp errmsg = NULL; - png_bytep buffer; - png_uint_32 prefix_length; - - png_debug(1, "in png_handle_iTXt"); - -#ifdef PNG_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_cache_max != 0) - { - if (png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - return; - } - - if (--png_ptr->user_chunk_cache_max == 1) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "no space in chunk cache"); - return; - } - } -#endif - - if ((png_ptr->mode & PNG_HAVE_IHDR) == 0) - png_chunk_error(png_ptr, "missing IHDR"); - - if ((png_ptr->mode & PNG_HAVE_IDAT) != 0) - png_ptr->mode |= PNG_AFTER_IDAT; - - buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/); - - if (buffer == NULL) - { - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "out of memory"); - return; - } - - png_crc_read(png_ptr, buffer, length); - - if (png_crc_finish(png_ptr, 0) != 0) - return; - - /* First the keyword. */ - for (prefix_length=0; - prefix_length < length && buffer[prefix_length] != 0; - ++prefix_length) - /* Empty loop */ ; - - /* Perform a basic check on the keyword length here. */ - if (prefix_length > 79 || prefix_length < 1) - errmsg = "bad keyword"; - - /* Expect keyword, compression flag, compression type, language, translated - * keyword (both may be empty but are 0 terminated) then the text, which may - * be empty. - */ - else if (prefix_length + 5 > length) - errmsg = "truncated"; - - else if (buffer[prefix_length+1] == 0 || - (buffer[prefix_length+1] == 1 && - buffer[prefix_length+2] == PNG_COMPRESSION_TYPE_BASE)) - { - int compressed = buffer[prefix_length+1] != 0; - png_uint_32 language_offset, translated_keyword_offset; - png_alloc_size_t uncompressed_length = 0; - - /* Now the language tag */ - prefix_length += 3; - language_offset = prefix_length; - - for (; prefix_length < length && buffer[prefix_length] != 0; - ++prefix_length) - /* Empty loop */ ; - - /* WARNING: the length may be invalid here, this is checked below. */ - translated_keyword_offset = ++prefix_length; - - for (; prefix_length < length && buffer[prefix_length] != 0; - ++prefix_length) - /* Empty loop */ ; - - /* prefix_length should now be at the trailing '\0' of the translated - * keyword, but it may already be over the end. None of this arithmetic - * can overflow because chunks are at most 2^31 bytes long, but on 16-bit - * systems the available allocation may overflow. - */ - ++prefix_length; - - if (compressed == 0 && prefix_length <= length) - uncompressed_length = length - prefix_length; - - else if (compressed != 0 && prefix_length < length) - { - uncompressed_length = PNG_SIZE_MAX; - - /* TODO: at present png_decompress_chunk imposes a single application - * level memory limit, this should be split to different values for - * iCCP and text chunks. - */ - if (png_decompress_chunk(png_ptr, length, prefix_length, - &uncompressed_length, 1/*terminate*/) == Z_STREAM_END) - buffer = png_ptr->read_buffer; - - else - errmsg = png_ptr->zstream.msg; - } - - else - errmsg = "truncated"; - - if (errmsg == NULL) - { - png_text text; - - buffer[uncompressed_length+prefix_length] = 0; - - if (compressed == 0) - text.compression = PNG_ITXT_COMPRESSION_NONE; - - else - text.compression = PNG_ITXT_COMPRESSION_zTXt; - - text.key = (png_charp)buffer; - text.lang = (png_charp)buffer + language_offset; - text.lang_key = (png_charp)buffer + translated_keyword_offset; - text.text = (png_charp)buffer + prefix_length; - text.text_length = 0; - text.itxt_length = uncompressed_length; - - if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0) - errmsg = "insufficient memory"; - } - } - - else - errmsg = "bad compression info"; - - if (errmsg != NULL) - png_chunk_benign_error(png_ptr, errmsg); -} -#endif - -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED -/* Utility function for png_handle_unknown; set up png_ptr::unknown_chunk */ -static int -png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length) -{ - png_alloc_size_t limit = PNG_SIZE_MAX; - - if (png_ptr->unknown_chunk.data != NULL) - { - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; - } - -# ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_malloc_max > 0 && - png_ptr->user_chunk_malloc_max < limit) - limit = png_ptr->user_chunk_malloc_max; - -# elif PNG_USER_CHUNK_MALLOC_MAX > 0 - if (PNG_USER_CHUNK_MALLOC_MAX < limit) - limit = PNG_USER_CHUNK_MALLOC_MAX; -# endif - - if (length <= limit) - { - PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name); - /* The following is safe because of the PNG_SIZE_MAX init above */ - png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/; - /* 'mode' is a flag array, only the bottom four bits matter here */ - png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/; - - if (length == 0) - png_ptr->unknown_chunk.data = NULL; - - else - { - /* Do a 'warn' here - it is handled below. */ - png_ptr->unknown_chunk.data = png_voidcast(png_bytep, - png_malloc_warn(png_ptr, length)); - } - } - - if (png_ptr->unknown_chunk.data == NULL && length > 0) - { - /* This is benign because we clean up correctly */ - png_crc_finish(png_ptr, length); - png_chunk_benign_error(png_ptr, "unknown chunk exceeds memory limits"); - return 0; - } - - else - { - if (length > 0) - png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length); - png_crc_finish(png_ptr, 0); - return 1; - } -} -#endif /* READ_UNKNOWN_CHUNKS */ - -/* Handle an unknown, or known but disabled, chunk */ -void /* PRIVATE */ -png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr, - png_uint_32 length, int keep) -{ - int handled = 0; /* the chunk was handled */ - - png_debug(1, "in png_handle_unknown"); - -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED - /* NOTE: this code is based on the code in libpng-1.4.12 except for fixing - * the bug which meant that setting a non-default behavior for a specific - * chunk would be ignored (the default was always used unless a user - * callback was installed). - * - * 'keep' is the value from the png_chunk_unknown_handling, the setting for - * this specific chunk_name, if PNG_HANDLE_AS_UNKNOWN_SUPPORTED, if not it - * will always be PNG_HANDLE_CHUNK_AS_DEFAULT and it needs to be set here. - * This is just an optimization to avoid multiple calls to the lookup - * function. - */ -# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -# ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED - keep = png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name); -# endif -# endif - - /* One of the following methods will read the chunk or skip it (at least one - * of these is always defined because this is the only way to switch on - * PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) - */ -# ifdef PNG_READ_USER_CHUNKS_SUPPORTED - /* The user callback takes precedence over the chunk keep value, but the - * keep value is still required to validate a save of a critical chunk. - */ - if (png_ptr->read_user_chunk_fn != NULL) - { - if (png_cache_unknown_chunk(png_ptr, length) != 0) - { - /* Callback to user unknown chunk handler */ - int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr, - &png_ptr->unknown_chunk); - - /* ret is: - * negative: An error occurred; png_chunk_error will be called. - * zero: The chunk was not handled, the chunk will be discarded - * unless png_set_keep_unknown_chunks has been used to set - * a 'keep' behavior for this particular chunk, in which - * case that will be used. A critical chunk will cause an - * error at this point unless it is to be saved. - * positive: The chunk was handled, libpng will ignore/discard it. - */ - if (ret < 0) - png_chunk_error(png_ptr, "error in user chunk"); - - else if (ret == 0) - { - /* If the keep value is 'default' or 'never' override it, but - * still error out on critical chunks unless the keep value is - * 'always' While this is weird it is the behavior in 1.4.12. - * A possible improvement would be to obey the value set for the - * chunk, but this would be an API change that would probably - * damage some applications. - * - * The png_app_warning below catches the case that matters, where - * the application has not set specific save or ignore for this - * chunk or global save or ignore. - */ - if (keep < PNG_HANDLE_CHUNK_IF_SAFE) - { -# ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED - if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE) - { - png_chunk_warning(png_ptr, "Saving unknown chunk:"); - png_app_warning(png_ptr, - "forcing save of an unhandled chunk;" - " please call png_set_keep_unknown_chunks"); - /* with keep = PNG_HANDLE_CHUNK_IF_SAFE */ - } -# endif - keep = PNG_HANDLE_CHUNK_IF_SAFE; - } - } - - else /* chunk was handled */ - { - handled = 1; - /* Critical chunks can be safely discarded at this point. */ - keep = PNG_HANDLE_CHUNK_NEVER; - } - } - - else - keep = PNG_HANDLE_CHUNK_NEVER; /* insufficient memory */ - } - - else - /* Use the SAVE_UNKNOWN_CHUNKS code or skip the chunk */ -# endif /* READ_USER_CHUNKS */ - -# ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED - { - /* keep is currently just the per-chunk setting, if there was no - * setting change it to the global default now (not that this may - * still be AS_DEFAULT) then obtain the cache of the chunk if required, - * if not simply skip the chunk. - */ - if (keep == PNG_HANDLE_CHUNK_AS_DEFAULT) - keep = png_ptr->unknown_default; - - if (keep == PNG_HANDLE_CHUNK_ALWAYS || - (keep == PNG_HANDLE_CHUNK_IF_SAFE && - PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) - { - if (png_cache_unknown_chunk(png_ptr, length) == 0) - keep = PNG_HANDLE_CHUNK_NEVER; - } - - else - png_crc_finish(png_ptr, length); - } -# else -# ifndef PNG_READ_USER_CHUNKS_SUPPORTED -# error no method to support READ_UNKNOWN_CHUNKS -# endif - - { - /* If here there is no read callback pointer set and no support is - * compiled in to just save the unknown chunks, so simply skip this - * chunk. If 'keep' is something other than AS_DEFAULT or NEVER then - * the app has erroneously asked for unknown chunk saving when there - * is no support. - */ - if (keep > PNG_HANDLE_CHUNK_NEVER) - png_app_error(png_ptr, "no unknown chunk support available"); - - png_crc_finish(png_ptr, length); - } -# endif - -# ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED - /* Now store the chunk in the chunk list if appropriate, and if the limits - * permit it. - */ - if (keep == PNG_HANDLE_CHUNK_ALWAYS || - (keep == PNG_HANDLE_CHUNK_IF_SAFE && - PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))) - { -# ifdef PNG_USER_LIMITS_SUPPORTED - switch (png_ptr->user_chunk_cache_max) - { - case 2: - png_ptr->user_chunk_cache_max = 1; - png_chunk_benign_error(png_ptr, "no space in chunk cache"); - /* FALLTHROUGH */ - case 1: - /* NOTE: prior to 1.6.0 this case resulted in an unknown critical - * chunk being skipped, now there will be a hard error below. - */ - break; - - default: /* not at limit */ - --(png_ptr->user_chunk_cache_max); - /* FALLTHROUGH */ - case 0: /* no limit */ -# endif /* USER_LIMITS */ - /* Here when the limit isn't reached or when limits are compiled - * out; store the chunk. - */ - png_set_unknown_chunks(png_ptr, info_ptr, - &png_ptr->unknown_chunk, 1); - handled = 1; -# ifdef PNG_USER_LIMITS_SUPPORTED - break; - } -# endif - } -# else /* no store support: the chunk must be handled by the user callback */ - PNG_UNUSED(info_ptr) -# endif - - /* Regardless of the error handling below the cached data (if any) can be - * freed now. Notice that the data is not freed if there is a png_error, but - * it will be freed by destroy_read_struct. - */ - if (png_ptr->unknown_chunk.data != NULL) - png_free(png_ptr, png_ptr->unknown_chunk.data); - png_ptr->unknown_chunk.data = NULL; - -#else /* !PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */ - /* There is no support to read an unknown chunk, so just skip it. */ - png_crc_finish(png_ptr, length); - PNG_UNUSED(info_ptr) - PNG_UNUSED(keep) -#endif /* !READ_UNKNOWN_CHUNKS */ - - /* Check for unhandled critical chunks */ - if (handled == 0 && PNG_CHUNK_CRITICAL(png_ptr->chunk_name)) - png_chunk_error(png_ptr, "unhandled critical chunk"); -} - -/* This function is called to verify that a chunk name is valid. - * This function can't have the "critical chunk check" incorporated - * into it, since in the future we will need to be able to call user - * functions to handle unknown critical chunks after we check that - * the chunk name itself is valid. - */ - -/* Bit hacking: the test for an invalid byte in the 4 byte chunk name is: - * - * ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97)) - */ - -void /* PRIVATE */ -png_check_chunk_name(png_const_structrp png_ptr, const png_uint_32 chunk_name) -{ - int i; - png_uint_32 cn=chunk_name; - - png_debug(1, "in png_check_chunk_name"); - - for (i=1; i<=4; ++i) - { - int c = cn & 0xff; - - if (c < 65 || c > 122 || (c > 90 && c < 97)) - png_chunk_error(png_ptr, "invalid chunk type"); - - cn >>= 8; - } -} - -void /* PRIVATE */ -png_check_chunk_length(png_const_structrp png_ptr, const png_uint_32 length) -{ - png_alloc_size_t limit = PNG_UINT_31_MAX; - -# ifdef PNG_SET_USER_LIMITS_SUPPORTED - if (png_ptr->user_chunk_malloc_max > 0 && - png_ptr->user_chunk_malloc_max < limit) - limit = png_ptr->user_chunk_malloc_max; -# elif PNG_USER_CHUNK_MALLOC_MAX > 0 - if (PNG_USER_CHUNK_MALLOC_MAX < limit) - limit = PNG_USER_CHUNK_MALLOC_MAX; -# endif - if (png_ptr->chunk_name == png_IDAT) - { - png_alloc_size_t idat_limit = PNG_UINT_31_MAX; - size_t row_factor = - (png_ptr->width * png_ptr->channels * (png_ptr->bit_depth > 8? 2: 1) - + 1 + (png_ptr->interlaced? 6: 0)); - if (png_ptr->height > PNG_UINT_32_MAX/row_factor) - idat_limit=PNG_UINT_31_MAX; - else - idat_limit = png_ptr->height * row_factor; - row_factor = row_factor > 32566? 32566 : row_factor; - idat_limit += 6 + 5*(idat_limit/row_factor+1); /* zlib+deflate overhead */ - idat_limit=idat_limit < PNG_UINT_31_MAX? idat_limit : PNG_UINT_31_MAX; - limit = limit < idat_limit? idat_limit : limit; - } - - if (length > limit) - { - png_debug2(0," length = %lu, limit = %lu", - (unsigned long)length,(unsigned long)limit); - png_chunk_error(png_ptr, "chunk data is too large"); - } -} - -/* Combines the row recently read in with the existing pixels in the row. This - * routine takes care of alpha and transparency if requested. This routine also - * handles the two methods of progressive display of interlaced images, - * depending on the 'display' value; if 'display' is true then the whole row - * (dp) is filled from the start by replicating the available pixels. If - * 'display' is false only those pixels present in the pass are filled in. - */ -void /* PRIVATE */ -png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display) -{ - unsigned int pixel_depth = png_ptr->transformed_pixel_depth; - png_const_bytep sp = png_ptr->row_buf + 1; - png_alloc_size_t row_width = png_ptr->width; - unsigned int pass = png_ptr->pass; - png_bytep end_ptr = 0; - png_byte end_byte = 0; - unsigned int end_mask; - - png_debug(1, "in png_combine_row"); - - /* Added in 1.5.6: it should not be possible to enter this routine until at - * least one row has been read from the PNG data and transformed. - */ - if (pixel_depth == 0) - png_error(png_ptr, "internal row logic error"); - - /* Added in 1.5.4: the pixel depth should match the information returned by - * any call to png_read_update_info at this point. Do not continue if we got - * this wrong. - */ - if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes != - PNG_ROWBYTES(pixel_depth, row_width)) - png_error(png_ptr, "internal row size calculation error"); - - /* Don't expect this to ever happen: */ - if (row_width == 0) - png_error(png_ptr, "internal row width error"); - - /* Preserve the last byte in cases where only part of it will be overwritten, - * the multiply below may overflow, we don't care because ANSI-C guarantees - * we get the low bits. - */ - end_mask = (pixel_depth * row_width) & 7; - if (end_mask != 0) - { - /* end_ptr == NULL is a flag to say do nothing */ - end_ptr = dp + PNG_ROWBYTES(pixel_depth, row_width) - 1; - end_byte = *end_ptr; -# ifdef PNG_READ_PACKSWAP_SUPPORTED - if ((png_ptr->transformations & PNG_PACKSWAP) != 0) - /* little-endian byte */ - end_mask = (unsigned int)(0xff << end_mask); - - else /* big-endian byte */ -# endif - end_mask = 0xff >> end_mask; - /* end_mask is now the bits to *keep* from the destination row */ - } - - /* For non-interlaced images this reduces to a memcpy(). A memcpy() - * will also happen if interlacing isn't supported or if the application - * does not call png_set_interlace_handling(). In the latter cases the - * caller just gets a sequence of the unexpanded rows from each interlace - * pass. - */ -#ifdef PNG_READ_INTERLACING_SUPPORTED - if (png_ptr->interlaced != 0 && - (png_ptr->transformations & PNG_INTERLACE) != 0 && - pass < 6 && (display == 0 || - /* The following copies everything for 'display' on passes 0, 2 and 4. */ - (display == 1 && (pass & 1) != 0))) - { - /* Narrow images may have no bits in a pass; the caller should handle - * this, but this test is cheap: - */ - if (row_width <= PNG_PASS_START_COL(pass)) - return; - - if (pixel_depth < 8) - { - /* For pixel depths up to 4 bpp the 8-pixel mask can be expanded to fit - * into 32 bits, then a single loop over the bytes using the four byte - * values in the 32-bit mask can be used. For the 'display' option the - * expanded mask may also not require any masking within a byte. To - * make this work the PACKSWAP option must be taken into account - it - * simply requires the pixels to be reversed in each byte. - * - * The 'regular' case requires a mask for each of the first 6 passes, - * the 'display' case does a copy for the even passes in the range - * 0..6. This has already been handled in the test above. - * - * The masks are arranged as four bytes with the first byte to use in - * the lowest bits (little-endian) regardless of the order (PACKSWAP or - * not) of the pixels in each byte. - * - * NOTE: the whole of this logic depends on the caller of this function - * only calling it on rows appropriate to the pass. This function only - * understands the 'x' logic; the 'y' logic is handled by the caller. - * - * The following defines allow generation of compile time constant bit - * masks for each pixel depth and each possibility of swapped or not - * swapped bytes. Pass 'p' is in the range 0..6; 'x', a pixel index, - * is in the range 0..7; and the result is 1 if the pixel is to be - * copied in the pass, 0 if not. 'S' is for the sparkle method, 'B' - * for the block method. - * - * With some compilers a compile time expression of the general form: - * - * (shift >= 32) ? (a >> (shift-32)) : (b >> shift) - * - * Produces warnings with values of 'shift' in the range 33 to 63 - * because the right hand side of the ?: expression is evaluated by - * the compiler even though it isn't used. Microsoft Visual C (various - * versions) and the Intel C compiler are known to do this. To avoid - * this the following macros are used in 1.5.6. This is a temporary - * solution to avoid destabilizing the code during the release process. - */ -# if PNG_USE_COMPILE_TIME_MASKS -# define PNG_LSR(x,s) ((x)>>((s) & 0x1f)) -# define PNG_LSL(x,s) ((x)<<((s) & 0x1f)) -# else -# define PNG_LSR(x,s) ((x)>>(s)) -# define PNG_LSL(x,s) ((x)<<(s)) -# endif -# define S_COPY(p,x) (((p)<4 ? PNG_LSR(0x80088822,(3-(p))*8+(7-(x))) :\ - PNG_LSR(0xaa55ff00,(7-(p))*8+(7-(x)))) & 1) -# define B_COPY(p,x) (((p)<4 ? PNG_LSR(0xff0fff33,(3-(p))*8+(7-(x))) :\ - PNG_LSR(0xff55ff00,(7-(p))*8+(7-(x)))) & 1) - - /* Return a mask for pass 'p' pixel 'x' at depth 'd'. The mask is - * little endian - the first pixel is at bit 0 - however the extra - * parameter 's' can be set to cause the mask position to be swapped - * within each byte, to match the PNG format. This is done by XOR of - * the shift with 7, 6 or 4 for bit depths 1, 2 and 4. - */ -# define PIXEL_MASK(p,x,d,s) \ - (PNG_LSL(((PNG_LSL(1U,(d)))-1),(((x)*(d))^((s)?8-(d):0)))) - - /* Hence generate the appropriate 'block' or 'sparkle' pixel copy mask. - */ -# define S_MASKx(p,x,d,s) (S_COPY(p,x)?PIXEL_MASK(p,x,d,s):0) -# define B_MASKx(p,x,d,s) (B_COPY(p,x)?PIXEL_MASK(p,x,d,s):0) - - /* Combine 8 of these to get the full mask. For the 1-bpp and 2-bpp - * cases the result needs replicating, for the 4-bpp case the above - * generates a full 32 bits. - */ -# define MASK_EXPAND(m,d) ((m)*((d)==1?0x01010101:((d)==2?0x00010001:1))) - -# define S_MASK(p,d,s) MASK_EXPAND(S_MASKx(p,0,d,s) + S_MASKx(p,1,d,s) +\ - S_MASKx(p,2,d,s) + S_MASKx(p,3,d,s) + S_MASKx(p,4,d,s) +\ - S_MASKx(p,5,d,s) + S_MASKx(p,6,d,s) + S_MASKx(p,7,d,s), d) - -# define B_MASK(p,d,s) MASK_EXPAND(B_MASKx(p,0,d,s) + B_MASKx(p,1,d,s) +\ - B_MASKx(p,2,d,s) + B_MASKx(p,3,d,s) + B_MASKx(p,4,d,s) +\ - B_MASKx(p,5,d,s) + B_MASKx(p,6,d,s) + B_MASKx(p,7,d,s), d) - -#if PNG_USE_COMPILE_TIME_MASKS - /* Utility macros to construct all the masks for a depth/swap - * combination. The 's' parameter says whether the format is PNG - * (big endian bytes) or not. Only the three odd-numbered passes are - * required for the display/block algorithm. - */ -# define S_MASKS(d,s) { S_MASK(0,d,s), S_MASK(1,d,s), S_MASK(2,d,s),\ - S_MASK(3,d,s), S_MASK(4,d,s), S_MASK(5,d,s) } - -# define B_MASKS(d,s) { B_MASK(1,d,s), B_MASK(3,d,s), B_MASK(5,d,s) } - -# define DEPTH_INDEX(d) ((d)==1?0:((d)==2?1:2)) - - /* Hence the pre-compiled masks indexed by PACKSWAP (or not), depth and - * then pass: - */ - static PNG_CONST png_uint_32 row_mask[2/*PACKSWAP*/][3/*depth*/][6] = - { - /* Little-endian byte masks for PACKSWAP */ - { S_MASKS(1,0), S_MASKS(2,0), S_MASKS(4,0) }, - /* Normal (big-endian byte) masks - PNG format */ - { S_MASKS(1,1), S_MASKS(2,1), S_MASKS(4,1) } - }; - - /* display_mask has only three entries for the odd passes, so index by - * pass>>1. - */ - static PNG_CONST png_uint_32 display_mask[2][3][3] = - { - /* Little-endian byte masks for PACKSWAP */ - { B_MASKS(1,0), B_MASKS(2,0), B_MASKS(4,0) }, - /* Normal (big-endian byte) masks - PNG format */ - { B_MASKS(1,1), B_MASKS(2,1), B_MASKS(4,1) } - }; - -# define MASK(pass,depth,display,png)\ - ((display)?display_mask[png][DEPTH_INDEX(depth)][pass>>1]:\ - row_mask[png][DEPTH_INDEX(depth)][pass]) - -#else /* !PNG_USE_COMPILE_TIME_MASKS */ - /* This is the runtime alternative: it seems unlikely that this will - * ever be either smaller or faster than the compile time approach. - */ -# define MASK(pass,depth,display,png)\ - ((display)?B_MASK(pass,depth,png):S_MASK(pass,depth,png)) -#endif /* !USE_COMPILE_TIME_MASKS */ - - /* Use the appropriate mask to copy the required bits. In some cases - * the byte mask will be 0 or 0xff; optimize these cases. row_width is - * the number of pixels, but the code copies bytes, so it is necessary - * to special case the end. - */ - png_uint_32 pixels_per_byte = 8 / pixel_depth; - png_uint_32 mask; - -# ifdef PNG_READ_PACKSWAP_SUPPORTED - if ((png_ptr->transformations & PNG_PACKSWAP) != 0) - mask = MASK(pass, pixel_depth, display, 0); - - else -# endif - mask = MASK(pass, pixel_depth, display, 1); - - for (;;) - { - png_uint_32 m; - - /* It doesn't matter in the following if png_uint_32 has more than - * 32 bits because the high bits always match those in m<<24; it is, - * however, essential to use OR here, not +, because of this. - */ - m = mask; - mask = (m >> 8) | (m << 24); /* rotate right to good compilers */ - m &= 0xff; - - if (m != 0) /* something to copy */ - { - if (m != 0xff) - *dp = (png_byte)((*dp & ~m) | (*sp & m)); - else - *dp = *sp; - } - - /* NOTE: this may overwrite the last byte with garbage if the image - * is not an exact number of bytes wide; libpng has always done - * this. - */ - if (row_width <= pixels_per_byte) - break; /* May need to restore part of the last byte */ - - row_width -= pixels_per_byte; - ++dp; - ++sp; - } - } - - else /* pixel_depth >= 8 */ - { - unsigned int bytes_to_copy, bytes_to_jump; - - /* Validate the depth - it must be a multiple of 8 */ - if (pixel_depth & 7) - png_error(png_ptr, "invalid user transform pixel depth"); - - pixel_depth >>= 3; /* now in bytes */ - row_width *= pixel_depth; - - /* Regardless of pass number the Adam 7 interlace always results in a - * fixed number of pixels to copy then to skip. There may be a - * different number of pixels to skip at the start though. - */ - { - unsigned int offset = PNG_PASS_START_COL(pass) * pixel_depth; - - row_width -= offset; - dp += offset; - sp += offset; - } - - /* Work out the bytes to copy. */ - if (display != 0) - { - /* When doing the 'block' algorithm the pixel in the pass gets - * replicated to adjacent pixels. This is why the even (0,2,4,6) - * passes are skipped above - the entire expanded row is copied. - */ - bytes_to_copy = (1<<((6-pass)>>1)) * pixel_depth; - - /* But don't allow this number to exceed the actual row width. */ - if (bytes_to_copy > row_width) - bytes_to_copy = (unsigned int)/*SAFE*/row_width; - } - - else /* normal row; Adam7 only ever gives us one pixel to copy. */ - bytes_to_copy = pixel_depth; - - /* In Adam7 there is a constant offset between where the pixels go. */ - bytes_to_jump = PNG_PASS_COL_OFFSET(pass) * pixel_depth; - - /* And simply copy these bytes. Some optimization is possible here, - * depending on the value of 'bytes_to_copy'. Special case the low - * byte counts, which we know to be frequent. - * - * Notice that these cases all 'return' rather than 'break' - this - * avoids an unnecessary test on whether to restore the last byte - * below. - */ - switch (bytes_to_copy) - { - case 1: - for (;;) - { - *dp = *sp; - - if (row_width <= bytes_to_jump) - return; - - dp += bytes_to_jump; - sp += bytes_to_jump; - row_width -= bytes_to_jump; - } - - case 2: - /* There is a possibility of a partial copy at the end here; this - * slows the code down somewhat. - */ - do - { - dp[0] = sp[0]; dp[1] = sp[1]; - - if (row_width <= bytes_to_jump) - return; - - sp += bytes_to_jump; - dp += bytes_to_jump; - row_width -= bytes_to_jump; - } - while (row_width > 1); - - /* And there can only be one byte left at this point: */ - *dp = *sp; - return; - - case 3: - /* This can only be the RGB case, so each copy is exactly one - * pixel and it is not necessary to check for a partial copy. - */ - for (;;) - { - dp[0] = sp[0]; dp[1] = sp[1]; dp[2] = sp[2]; - - if (row_width <= bytes_to_jump) - return; - - sp += bytes_to_jump; - dp += bytes_to_jump; - row_width -= bytes_to_jump; - } - - default: -#if PNG_ALIGN_TYPE != PNG_ALIGN_NONE - /* Check for double byte alignment and, if possible, use a - * 16-bit copy. Don't attempt this for narrow images - ones that - * are less than an interlace panel wide. Don't attempt it for - * wide bytes_to_copy either - use the memcpy there. - */ - if (bytes_to_copy < 16 /*else use memcpy*/ && - png_isaligned(dp, png_uint_16) && - png_isaligned(sp, png_uint_16) && - bytes_to_copy % (sizeof (png_uint_16)) == 0 && - bytes_to_jump % (sizeof (png_uint_16)) == 0) - { - /* Everything is aligned for png_uint_16 copies, but try for - * png_uint_32 first. - */ - if (png_isaligned(dp, png_uint_32) && - png_isaligned(sp, png_uint_32) && - bytes_to_copy % (sizeof (png_uint_32)) == 0 && - bytes_to_jump % (sizeof (png_uint_32)) == 0) - { - png_uint_32p dp32 = png_aligncast(png_uint_32p,dp); - png_const_uint_32p sp32 = png_aligncastconst( - png_const_uint_32p, sp); - size_t skip = (bytes_to_jump-bytes_to_copy) / - (sizeof (png_uint_32)); - - do - { - size_t c = bytes_to_copy; - do - { - *dp32++ = *sp32++; - c -= (sizeof (png_uint_32)); - } - while (c > 0); - - if (row_width <= bytes_to_jump) - return; - - dp32 += skip; - sp32 += skip; - row_width -= bytes_to_jump; - } - while (bytes_to_copy <= row_width); - - /* Get to here when the row_width truncates the final copy. - * There will be 1-3 bytes left to copy, so don't try the - * 16-bit loop below. - */ - dp = (png_bytep)dp32; - sp = (png_const_bytep)sp32; - do - *dp++ = *sp++; - while (--row_width > 0); - return; - } - - /* Else do it in 16-bit quantities, but only if the size is - * not too large. - */ - else - { - png_uint_16p dp16 = png_aligncast(png_uint_16p, dp); - png_const_uint_16p sp16 = png_aligncastconst( - png_const_uint_16p, sp); - size_t skip = (bytes_to_jump-bytes_to_copy) / - (sizeof (png_uint_16)); - - do - { - size_t c = bytes_to_copy; - do - { - *dp16++ = *sp16++; - c -= (sizeof (png_uint_16)); - } - while (c > 0); - - if (row_width <= bytes_to_jump) - return; - - dp16 += skip; - sp16 += skip; - row_width -= bytes_to_jump; - } - while (bytes_to_copy <= row_width); - - /* End of row - 1 byte left, bytes_to_copy > row_width: */ - dp = (png_bytep)dp16; - sp = (png_const_bytep)sp16; - do - *dp++ = *sp++; - while (--row_width > 0); - return; - } - } -#endif /* ALIGN_TYPE code */ - - /* The true default - use a memcpy: */ - for (;;) - { - memcpy(dp, sp, bytes_to_copy); - - if (row_width <= bytes_to_jump) - return; - - sp += bytes_to_jump; - dp += bytes_to_jump; - row_width -= bytes_to_jump; - if (bytes_to_copy > row_width) - bytes_to_copy = (unsigned int)/*SAFE*/row_width; - } - } - - /* NOT REACHED*/ - } /* pixel_depth >= 8 */ - - /* Here if pixel_depth < 8 to check 'end_ptr' below. */ - } - else -#endif /* READ_INTERLACING */ - - /* If here then the switch above wasn't used so just memcpy the whole row - * from the temporary row buffer (notice that this overwrites the end of the - * destination row if it is a partial byte.) - */ - memcpy(dp, sp, PNG_ROWBYTES(pixel_depth, row_width)); - - /* Restore the overwritten bits from the last byte if necessary. */ - if (end_ptr != NULL) - *end_ptr = (png_byte)((end_byte & end_mask) | (*end_ptr & ~end_mask)); -} - -#ifdef PNG_READ_INTERLACING_SUPPORTED -void /* PRIVATE */ -png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass, - png_uint_32 transformations /* Because these may affect the byte layout */) -{ - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - /* Offset to next interlace block */ - static PNG_CONST unsigned int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - png_debug(1, "in png_do_read_interlace"); - if (row != NULL && row_info != NULL) - { - png_uint_32 final_width; - - final_width = row_info->width * png_pass_inc[pass]; - - switch (row_info->pixel_depth) - { - case 1: - { - png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 3); - png_bytep dp = row + (png_size_t)((final_width - 1) >> 3); - unsigned int sshift, dshift; - unsigned int s_start, s_end; - int s_inc; - int jstop = (int)png_pass_inc[pass]; - png_byte v; - png_uint_32 i; - int j; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if ((transformations & PNG_PACKSWAP) != 0) - { - sshift = ((row_info->width + 7) & 0x07); - dshift = ((final_width + 7) & 0x07); - s_start = 7; - s_end = 0; - s_inc = -1; - } - - else -#endif - { - sshift = 7 - ((row_info->width + 7) & 0x07); - dshift = 7 - ((final_width + 7) & 0x07); - s_start = 0; - s_end = 7; - s_inc = 1; - } - - for (i = 0; i < row_info->width; i++) - { - v = (png_byte)((*sp >> sshift) & 0x01); - for (j = 0; j < jstop; j++) - { - unsigned int tmp = *dp & (0x7f7f >> (7 - dshift)); - tmp |= (unsigned int)(v << dshift); - *dp = (png_byte)(tmp & 0xff); - - if (dshift == s_end) - { - dshift = s_start; - dp--; - } - - else - dshift = (unsigned int)((int)dshift + s_inc); - } - - if (sshift == s_end) - { - sshift = s_start; - sp--; - } - - else - sshift = (unsigned int)((int)sshift + s_inc); - } - break; - } - - case 2: - { - png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2); - png_bytep dp = row + (png_uint_32)((final_width - 1) >> 2); - unsigned int sshift, dshift; - unsigned int s_start, s_end; - int s_inc; - int jstop = (int)png_pass_inc[pass]; - png_uint_32 i; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if ((transformations & PNG_PACKSWAP) != 0) - { - sshift = (((row_info->width + 3) & 0x03) << 1); - dshift = (((final_width + 3) & 0x03) << 1); - s_start = 6; - s_end = 0; - s_inc = -2; - } - - else -#endif - { - sshift = ((3 - ((row_info->width + 3) & 0x03)) << 1); - dshift = ((3 - ((final_width + 3) & 0x03)) << 1); - s_start = 0; - s_end = 6; - s_inc = 2; - } - - for (i = 0; i < row_info->width; i++) - { - png_byte v; - int j; - - v = (png_byte)((*sp >> sshift) & 0x03); - for (j = 0; j < jstop; j++) - { - unsigned int tmp = *dp & (0x3f3f >> (6 - dshift)); - tmp |= (unsigned int)(v << dshift); - *dp = (png_byte)(tmp & 0xff); - - if (dshift == s_end) - { - dshift = s_start; - dp--; - } - - else - dshift = (unsigned int)((int)dshift + s_inc); - } - - if (sshift == s_end) - { - sshift = s_start; - sp--; - } - - else - sshift = (unsigned int)((int)sshift + s_inc); - } - break; - } - - case 4: - { - png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1); - png_bytep dp = row + (png_size_t)((final_width - 1) >> 1); - unsigned int sshift, dshift; - unsigned int s_start, s_end; - int s_inc; - png_uint_32 i; - int jstop = (int)png_pass_inc[pass]; - -#ifdef PNG_READ_PACKSWAP_SUPPORTED - if ((transformations & PNG_PACKSWAP) != 0) - { - sshift = (((row_info->width + 1) & 0x01) << 2); - dshift = (((final_width + 1) & 0x01) << 2); - s_start = 4; - s_end = 0; - s_inc = -4; - } - - else -#endif - { - sshift = ((1 - ((row_info->width + 1) & 0x01)) << 2); - dshift = ((1 - ((final_width + 1) & 0x01)) << 2); - s_start = 0; - s_end = 4; - s_inc = 4; - } - - for (i = 0; i < row_info->width; i++) - { - png_byte v = (png_byte)((*sp >> sshift) & 0x0f); - int j; - - for (j = 0; j < jstop; j++) - { - unsigned int tmp = *dp & (0xf0f >> (4 - dshift)); - tmp |= (unsigned int)(v << dshift); - *dp = (png_byte)(tmp & 0xff); - - if (dshift == s_end) - { - dshift = s_start; - dp--; - } - - else - dshift = (unsigned int)((int)dshift + s_inc); - } - - if (sshift == s_end) - { - sshift = s_start; - sp--; - } - - else - sshift = (unsigned int)((int)sshift + s_inc); - } - break; - } - - default: - { - png_size_t pixel_bytes = (row_info->pixel_depth >> 3); - - png_bytep sp = row + (png_size_t)(row_info->width - 1) - * pixel_bytes; - - png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes; - - int jstop = (int)png_pass_inc[pass]; - png_uint_32 i; - - for (i = 0; i < row_info->width; i++) - { - png_byte v[8]; /* SAFE; pixel_depth does not exceed 64 */ - int j; - - memcpy(v, sp, pixel_bytes); - - for (j = 0; j < jstop; j++) - { - memcpy(dp, v, pixel_bytes); - dp -= pixel_bytes; - } - - sp -= pixel_bytes; - } - break; - } - } - - row_info->width = final_width; - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width); - } -#ifndef PNG_READ_PACKSWAP_SUPPORTED - PNG_UNUSED(transformations) /* Silence compiler warning */ -#endif -} -#endif /* READ_INTERLACING */ - -static void -png_read_filter_row_sub(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) -{ - png_size_t i; - png_size_t istop = row_info->rowbytes; - unsigned int bpp = (row_info->pixel_depth + 7) >> 3; - png_bytep rp = row + bpp; - - PNG_UNUSED(prev_row) - - for (i = bpp; i < istop; i++) - { - *rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff); - rp++; - } -} - -static void -png_read_filter_row_up(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) -{ - png_size_t i; - png_size_t istop = row_info->rowbytes; - png_bytep rp = row; - png_const_bytep pp = prev_row; - - for (i = 0; i < istop; i++) - { - *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff); - rp++; - } -} - -static void -png_read_filter_row_avg(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) -{ - png_size_t i; - png_bytep rp = row; - png_const_bytep pp = prev_row; - unsigned int bpp = (row_info->pixel_depth + 7) >> 3; - png_size_t istop = row_info->rowbytes - bpp; - - for (i = 0; i < bpp; i++) - { - *rp = (png_byte)(((int)(*rp) + - ((int)(*pp++) / 2 )) & 0xff); - - rp++; - } - - for (i = 0; i < istop; i++) - { - *rp = (png_byte)(((int)(*rp) + - (int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff); - - rp++; - } -} - -static void -png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) -{ - png_bytep rp_end = row + row_info->rowbytes; - int a, c; - - /* First pixel/byte */ - c = *prev_row++; - a = *row + c; - *row++ = (png_byte)a; - - /* Remainder */ - while (row < rp_end) - { - int b, pa, pb, pc, p; - - a &= 0xff; /* From previous iteration or start */ - b = *prev_row++; - - p = b - c; - pc = a - c; - -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - - /* Find the best predictor, the least of pa, pb, pc favoring the earlier - * ones in the case of a tie. - */ - if (pb < pa) - { - pa = pb; a = b; - } - if (pc < pa) a = c; - - /* Calculate the current pixel in a, and move the previous row pixel to c - * for the next time round the loop - */ - c = b; - a += *row; - *row++ = (png_byte)a; - } -} - -static void -png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row, - png_const_bytep prev_row) -{ - unsigned int bpp = (row_info->pixel_depth + 7) >> 3; - png_bytep rp_end = row + bpp; - - /* Process the first pixel in the row completely (this is the same as 'up' - * because there is only one candidate predictor for the first row). - */ - while (row < rp_end) - { - int a = *row + *prev_row++; - *row++ = (png_byte)a; - } - - /* Remainder */ - rp_end = rp_end + (row_info->rowbytes - bpp); - - while (row < rp_end) - { - int a, b, c, pa, pb, pc, p; - - c = *(prev_row - bpp); - a = *(row - bpp); - b = *prev_row++; - - p = b - c; - pc = a - c; - -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - - if (pb < pa) - { - pa = pb; a = b; - } - if (pc < pa) a = c; - - a += *row; - *row++ = (png_byte)a; - } -} - -static void -png_init_filter_functions(png_structrp pp) - /* This function is called once for every PNG image (except for PNG images - * that only use PNG_FILTER_VALUE_NONE for all rows) to set the - * implementations required to reverse the filtering of PNG rows. Reversing - * the filter is the first transformation performed on the row data. It is - * performed in place, therefore an implementation can be selected based on - * the image pixel format. If the implementation depends on image width then - * take care to ensure that it works correctly if the image is interlaced - - * interlacing causes the actual row width to vary. - */ -{ - unsigned int bpp = (pp->pixel_depth + 7) >> 3; - - pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub; - pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up; - pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg; - if (bpp == 1) - pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = - png_read_filter_row_paeth_1byte_pixel; - else - pp->read_filter[PNG_FILTER_VALUE_PAETH-1] = - png_read_filter_row_paeth_multibyte_pixel; - -#ifdef PNG_FILTER_OPTIMIZATIONS - /* To use this define PNG_FILTER_OPTIMIZATIONS as the name of a function to - * call to install hardware optimizations for the above functions; simply - * replace whatever elements of the pp->read_filter[] array with a hardware - * specific (or, for that matter, generic) optimization. - * - * To see an example of this examine what configure.ac does when - * --enable-arm-neon is specified on the command line. - */ - PNG_FILTER_OPTIMIZATIONS(pp, bpp); -#endif -} - -void /* PRIVATE */ -png_read_filter_row(png_structrp pp, png_row_infop row_info, png_bytep row, - png_const_bytep prev_row, int filter) -{ - /* OPTIMIZATION: DO NOT MODIFY THIS FUNCTION, instead #define - * PNG_FILTER_OPTIMIZATIONS to a function that overrides the generic - * implementations. See png_init_filter_functions above. - */ - if (filter > PNG_FILTER_VALUE_NONE && filter < PNG_FILTER_VALUE_LAST) - { - if (pp->read_filter[0] == NULL) - png_init_filter_functions(pp); - - pp->read_filter[filter-1](row_info, row, prev_row); - } -} - -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED -void /* PRIVATE */ -png_read_IDAT_data(png_structrp png_ptr, png_bytep output, - png_alloc_size_t avail_out) -{ - /* Loop reading IDATs and decompressing the result into output[avail_out] */ - png_ptr->zstream.next_out = output; - png_ptr->zstream.avail_out = 0; /* safety: set below */ - - if (output == NULL) - avail_out = 0; - - do - { - int ret; - png_byte tmpbuf[PNG_INFLATE_BUF_SIZE]; - - if (png_ptr->zstream.avail_in == 0) - { - uInt avail_in; - png_bytep buffer; - - while (png_ptr->idat_size == 0) - { - png_crc_finish(png_ptr, 0); - - png_ptr->idat_size = png_read_chunk_header(png_ptr); - /* This is an error even in the 'check' case because the code just - * consumed a non-IDAT header. - */ - if (png_ptr->chunk_name != png_IDAT) - png_error(png_ptr, "Not enough image data"); - } - - avail_in = png_ptr->IDAT_read_size; - - if (avail_in > png_ptr->idat_size) - avail_in = (uInt)png_ptr->idat_size; - - /* A PNG with a gradually increasing IDAT size will defeat this attempt - * to minimize memory usage by causing lots of re-allocs, but - * realistically doing IDAT_read_size re-allocs is not likely to be a - * big problem. - */ - buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/); - - png_crc_read(png_ptr, buffer, avail_in); - png_ptr->idat_size -= avail_in; - - png_ptr->zstream.next_in = buffer; - png_ptr->zstream.avail_in = avail_in; - } - - /* And set up the output side. */ - if (output != NULL) /* standard read */ - { - uInt out = ZLIB_IO_MAX; - - if (out > avail_out) - out = (uInt)avail_out; - - avail_out -= out; - png_ptr->zstream.avail_out = out; - } - - else /* after last row, checking for end */ - { - png_ptr->zstream.next_out = tmpbuf; - png_ptr->zstream.avail_out = (sizeof tmpbuf); - } - - /* Use NO_FLUSH; this gives zlib the maximum opportunity to optimize the - * process. If the LZ stream is truncated the sequential reader will - * terminally damage the stream, above, by reading the chunk header of the - * following chunk (it then exits with png_error). - * - * TODO: deal more elegantly with truncated IDAT lists. - */ - ret = PNG_INFLATE(png_ptr, Z_NO_FLUSH); - - /* Take the unconsumed output back. */ - if (output != NULL) - avail_out += png_ptr->zstream.avail_out; - - else /* avail_out counts the extra bytes */ - avail_out += (sizeof tmpbuf) - png_ptr->zstream.avail_out; - - png_ptr->zstream.avail_out = 0; - - if (ret == Z_STREAM_END) - { - /* Do this for safety; we won't read any more into this row. */ - png_ptr->zstream.next_out = NULL; - - png_ptr->mode |= PNG_AFTER_IDAT; - png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; - - if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0) - png_chunk_benign_error(png_ptr, "Extra compressed data"); - break; - } - - if (ret != Z_OK) - { - png_zstream_error(png_ptr, ret); - - if (output != NULL) - png_chunk_error(png_ptr, png_ptr->zstream.msg); - - else /* checking */ - { - png_chunk_benign_error(png_ptr, png_ptr->zstream.msg); - return; - } - } - } while (avail_out > 0); - - if (avail_out > 0) - { - /* The stream ended before the image; this is the same as too few IDATs so - * should be handled the same way. - */ - if (output != NULL) - png_error(png_ptr, "Not enough image data"); - - else /* the deflate stream contained extra data */ - png_chunk_benign_error(png_ptr, "Too much image data"); - } -} - -void /* PRIVATE */ -png_read_finish_IDAT(png_structrp png_ptr) -{ - /* We don't need any more data and the stream should have ended, however the - * LZ end code may actually not have been processed. In this case we must - * read it otherwise stray unread IDAT data or, more likely, an IDAT chunk - * may still remain to be consumed. - */ - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) - { - /* The NULL causes png_read_IDAT_data to swallow any remaining bytes in - * the compressed stream, but the stream may be damaged too, so even after - * this call we may need to terminate the zstream ownership. - */ - png_read_IDAT_data(png_ptr, NULL, 0); - png_ptr->zstream.next_out = NULL; /* safety */ - - /* Now clear everything out for safety; the following may not have been - * done. - */ - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED) == 0) - { - png_ptr->mode |= PNG_AFTER_IDAT; - png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED; - } - } - - /* If the zstream has not been released do it now *and* terminate the reading - * of the final IDAT chunk. - */ - if (png_ptr->zowner == png_IDAT) - { - /* Always do this; the pointers otherwise point into the read buffer. */ - png_ptr->zstream.next_in = NULL; - png_ptr->zstream.avail_in = 0; - - /* Now we no longer own the zstream. */ - png_ptr->zowner = 0; - - /* The slightly weird semantics of the sequential IDAT reading is that we - * are always in or at the end of an IDAT chunk, so we always need to do a - * crc_finish here. If idat_size is non-zero we also need to read the - * spurious bytes at the end of the chunk now. - */ - (void)png_crc_finish(png_ptr, png_ptr->idat_size); - } -} - -void /* PRIVATE */ -png_read_finish_row(png_structrp png_ptr) -{ - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; - - png_debug(1, "in png_read_finish_row"); - png_ptr->row_number++; - if (png_ptr->row_number < png_ptr->num_rows) - return; - - if (png_ptr->interlaced != 0) - { - png_ptr->row_number = 0; - - /* TO DO: don't do this if prev_row isn't needed (requires - * read-ahead of the next row's filter byte. - */ - memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); - - do - { - png_ptr->pass++; - - if (png_ptr->pass >= 7) - break; - - png_ptr->iwidth = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - - if ((png_ptr->transformations & PNG_INTERLACE) == 0) - { - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - } - - else /* if (png_ptr->transformations & PNG_INTERLACE) */ - break; /* libpng deinterlacing sees every row */ - - } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0); - - if (png_ptr->pass < 7) - return; - } - - /* Here after at the end of the last row of the last pass. */ - png_read_finish_IDAT(png_ptr); -} -#endif /* SEQUENTIAL_READ */ - -void /* PRIVATE */ -png_read_start_row(png_structrp png_ptr) -{ - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; - - unsigned int max_pixel_depth; - png_size_t row_bytes; - - png_debug(1, "in png_read_start_row"); - -#ifdef PNG_READ_TRANSFORMS_SUPPORTED - png_init_read_transformations(png_ptr); -#endif - if (png_ptr->interlaced != 0) - { - if ((png_ptr->transformations & PNG_INTERLACE) == 0) - png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - - png_pass_ystart[0]) / png_pass_yinc[0]; - - else - png_ptr->num_rows = png_ptr->height; - - png_ptr->iwidth = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - } - - else - { - png_ptr->num_rows = png_ptr->height; - png_ptr->iwidth = png_ptr->width; - } - - max_pixel_depth = (unsigned int)png_ptr->pixel_depth; - - /* WARNING: * png_read_transform_info (pngrtran.c) performs a simpler set of - * calculations to calculate the final pixel depth, then - * png_do_read_transforms actually does the transforms. This means that the - * code which effectively calculates this value is actually repeated in three - * separate places. They must all match. Innocent changes to the order of - * transformations can and will break libpng in a way that causes memory - * overwrites. - * - * TODO: fix this. - */ -#ifdef PNG_READ_PACK_SUPPORTED - if ((png_ptr->transformations & PNG_PACK) != 0 && png_ptr->bit_depth < 8) - max_pixel_depth = 8; -#endif - -#ifdef PNG_READ_EXPAND_SUPPORTED - if ((png_ptr->transformations & PNG_EXPAND) != 0) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (png_ptr->num_trans != 0) - max_pixel_depth = 32; - - else - max_pixel_depth = 24; - } - - else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) - { - if (max_pixel_depth < 8) - max_pixel_depth = 8; - - if (png_ptr->num_trans != 0) - max_pixel_depth *= 2; - } - - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) - { - if (png_ptr->num_trans != 0) - { - max_pixel_depth *= 4; - max_pixel_depth /= 3; - } - } - } -#endif - -#ifdef PNG_READ_EXPAND_16_SUPPORTED - if ((png_ptr->transformations & PNG_EXPAND_16) != 0) - { -# ifdef PNG_READ_EXPAND_SUPPORTED - /* In fact it is an error if it isn't supported, but checking is - * the safe way. - */ - if ((png_ptr->transformations & PNG_EXPAND) != 0) - { - if (png_ptr->bit_depth < 16) - max_pixel_depth *= 2; - } - else -# endif - png_ptr->transformations &= ~PNG_EXPAND_16; - } -#endif - -#ifdef PNG_READ_FILLER_SUPPORTED - if ((png_ptr->transformations & (PNG_FILLER)) != 0) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY) - { - if (max_pixel_depth <= 8) - max_pixel_depth = 16; - - else - max_pixel_depth = 32; - } - - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB || - png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - if (max_pixel_depth <= 32) - max_pixel_depth = 32; - - else - max_pixel_depth = 64; - } - } -#endif - -#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - if ((png_ptr->transformations & PNG_GRAY_TO_RGB) != 0) - { - if ( -#ifdef PNG_READ_EXPAND_SUPPORTED - (png_ptr->num_trans != 0 && - (png_ptr->transformations & PNG_EXPAND) != 0) || -#endif -#ifdef PNG_READ_FILLER_SUPPORTED - (png_ptr->transformations & (PNG_FILLER)) != 0 || -#endif - png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (max_pixel_depth <= 16) - max_pixel_depth = 32; - - else - max_pixel_depth = 64; - } - - else - { - if (max_pixel_depth <= 8) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - max_pixel_depth = 32; - - else - max_pixel_depth = 24; - } - - else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - max_pixel_depth = 64; - - else - max_pixel_depth = 48; - } - } -#endif - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) && \ -defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) - if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) - { - unsigned int user_pixel_depth = png_ptr->user_transform_depth * - png_ptr->user_transform_channels; - - if (user_pixel_depth > max_pixel_depth) - max_pixel_depth = user_pixel_depth; - } -#endif - - /* This value is stored in png_struct and double checked in the row read - * code. - */ - png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth; - png_ptr->transformed_pixel_depth = 0; /* calculated on demand */ - - /* Align the width on the next larger 8 pixels. Mainly used - * for interlacing - */ - row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7)); - /* Calculate the maximum bytes needed, adding a byte and a pixel - * for safety's sake - */ - row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) + - 1 + ((max_pixel_depth + 7) >> 3U); - -#ifdef PNG_MAX_MALLOC_64K - if (row_bytes > (png_uint_32)65536L) - png_error(png_ptr, "This image requires a row greater than 64KB"); -#endif - - if (row_bytes + 48 > png_ptr->old_big_row_buf_size) - { - png_free(png_ptr, png_ptr->big_row_buf); - png_free(png_ptr, png_ptr->big_prev_row); - - if (png_ptr->interlaced != 0) - png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, - row_bytes + 48); - - else - png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48); - - png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48); - -#ifdef PNG_ALIGNED_MEMORY_SUPPORTED - /* Use 16-byte aligned memory for row_buf with at least 16 bytes - * of padding before and after row_buf; treat prev_row similarly. - * NOTE: the alignment is to the start of the pixels, one beyond the start - * of the buffer, because of the filter byte. Prior to libpng 1.5.6 this - * was incorrect; the filter byte was aligned, which had the exact - * opposite effect of that intended. - */ - { - png_bytep temp = png_ptr->big_row_buf + 32; - int extra = (int)((temp - (png_bytep)0) & 0x0f); - png_ptr->row_buf = temp - extra - 1/*filter byte*/; - - temp = png_ptr->big_prev_row + 32; - extra = (int)((temp - (png_bytep)0) & 0x0f); - png_ptr->prev_row = temp - extra - 1/*filter byte*/; - } - -#else - /* Use 31 bytes of padding before and 17 bytes after row_buf. */ - png_ptr->row_buf = png_ptr->big_row_buf + 31; - png_ptr->prev_row = png_ptr->big_prev_row + 31; -#endif - png_ptr->old_big_row_buf_size = row_bytes + 48; - } - -#ifdef PNG_MAX_MALLOC_64K - if (png_ptr->rowbytes > 65535) - png_error(png_ptr, "This image requires a row greater than 64KB"); - -#endif - if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1)) - png_error(png_ptr, "Row has too many bytes to allocate in memory"); - - memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1); - - png_debug1(3, "width = %u,", png_ptr->width); - png_debug1(3, "height = %u,", png_ptr->height); - png_debug1(3, "iwidth = %u,", png_ptr->iwidth); - png_debug1(3, "num_rows = %u,", png_ptr->num_rows); - png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes); - png_debug1(3, "irowbytes = %lu", - (unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1); - - /* The sequential reader needs a buffer for IDAT, but the progressive reader - * does not, so free the read buffer now regardless; the sequential reader - * reallocates it on demand. - */ - if (png_ptr->read_buffer != NULL) - { - png_bytep buffer = png_ptr->read_buffer; - - png_ptr->read_buffer_size = 0; - png_ptr->read_buffer = NULL; - png_free(png_ptr, buffer); - } - - /* Finally claim the zstream for the inflate of the IDAT data, use the bits - * value from the stream (note that this will result in a fatal error if the - * IDAT stream has a bogus deflate header window_bits value, but this should - * not be happening any longer!) - */ - if (png_inflate_claim(png_ptr, png_IDAT) != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg); - - png_ptr->flags |= PNG_FLAG_ROW_INIT; -} -#endif /* READ */ diff --git a/project/jni/png/pngset.c b/project/jni/png/pngset.c deleted file mode 100644 index 6f3a1ee11..000000000 --- a/project/jni/png/pngset.c +++ /dev/null @@ -1,1802 +0,0 @@ - -/* pngset.c - storage of image information into info struct - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * The functions here are used during reads to store data from the file - * into the info struct, and during writes to store application data - * into the info struct for writing into the file. This abstracts the - * info struct and allows us to change the structure in the future. - */ - -#include "pngpriv.h" - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -#ifdef PNG_bKGD_SUPPORTED -void PNGAPI -png_set_bKGD(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_color_16p background) -{ - png_debug1(1, "in %s storage function", "bKGD"); - - if (png_ptr == NULL || info_ptr == NULL || background == NULL) - return; - - info_ptr->background = *background; - info_ptr->valid |= PNG_INFO_bKGD; -} -#endif - -#ifdef PNG_cHRM_SUPPORTED -void PNGFAPI -png_set_cHRM_fixed(png_const_structrp png_ptr, png_inforp info_ptr, - png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, - png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, - png_fixed_point blue_x, png_fixed_point blue_y) -{ - png_xy xy; - - png_debug1(1, "in %s storage function", "cHRM fixed"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - xy.redx = red_x; - xy.redy = red_y; - xy.greenx = green_x; - xy.greeny = green_y; - xy.bluex = blue_x; - xy.bluey = blue_y; - xy.whitex = white_x; - xy.whitey = white_y; - - if (png_colorspace_set_chromaticities(png_ptr, &info_ptr->colorspace, &xy, - 2/* override with app values*/) != 0) - info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; - - png_colorspace_sync_info(png_ptr, info_ptr); -} - -void PNGFAPI -png_set_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_inforp info_ptr, - png_fixed_point int_red_X, png_fixed_point int_red_Y, - png_fixed_point int_red_Z, png_fixed_point int_green_X, - png_fixed_point int_green_Y, png_fixed_point int_green_Z, - png_fixed_point int_blue_X, png_fixed_point int_blue_Y, - png_fixed_point int_blue_Z) -{ - png_XYZ XYZ; - - png_debug1(1, "in %s storage function", "cHRM XYZ fixed"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - XYZ.red_X = int_red_X; - XYZ.red_Y = int_red_Y; - XYZ.red_Z = int_red_Z; - XYZ.green_X = int_green_X; - XYZ.green_Y = int_green_Y; - XYZ.green_Z = int_green_Z; - XYZ.blue_X = int_blue_X; - XYZ.blue_Y = int_blue_Y; - XYZ.blue_Z = int_blue_Z; - - if (png_colorspace_set_endpoints(png_ptr, &info_ptr->colorspace, - &XYZ, 2) != 0) - info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM; - - png_colorspace_sync_info(png_ptr, info_ptr); -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_cHRM(png_const_structrp png_ptr, png_inforp info_ptr, - double white_x, double white_y, double red_x, double red_y, - double green_x, double green_y, double blue_x, double blue_y) -{ - png_set_cHRM_fixed(png_ptr, info_ptr, - png_fixed(png_ptr, white_x, "cHRM White X"), - png_fixed(png_ptr, white_y, "cHRM White Y"), - png_fixed(png_ptr, red_x, "cHRM Red X"), - png_fixed(png_ptr, red_y, "cHRM Red Y"), - png_fixed(png_ptr, green_x, "cHRM Green X"), - png_fixed(png_ptr, green_y, "cHRM Green Y"), - png_fixed(png_ptr, blue_x, "cHRM Blue X"), - png_fixed(png_ptr, blue_y, "cHRM Blue Y")); -} - -void PNGAPI -png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X, - double red_Y, double red_Z, double green_X, double green_Y, double green_Z, - double blue_X, double blue_Y, double blue_Z) -{ - png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, - png_fixed(png_ptr, red_X, "cHRM Red X"), - png_fixed(png_ptr, red_Y, "cHRM Red Y"), - png_fixed(png_ptr, red_Z, "cHRM Red Z"), - png_fixed(png_ptr, green_X, "cHRM Green X"), - png_fixed(png_ptr, green_Y, "cHRM Green Y"), - png_fixed(png_ptr, green_Z, "cHRM Green Z"), - png_fixed(png_ptr, blue_X, "cHRM Blue X"), - png_fixed(png_ptr, blue_Y, "cHRM Blue Y"), - png_fixed(png_ptr, blue_Z, "cHRM Blue Z")); -} -# endif /* FLOATING_POINT */ - -#endif /* cHRM */ - -#ifdef PNG_eXIf_SUPPORTED -void PNGAPI -png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr, - const png_bytep eXIf_buf) -{ - png_warning(png_ptr, "png_set_eXIf does not work; use png_set_eXIf_1"); - PNG_UNUSED(info_ptr) - PNG_UNUSED(eXIf_buf) -} - -void PNGAPI -png_set_eXIf_1(png_const_structrp png_ptr, png_inforp info_ptr, - const png_uint_32 num_exif, const png_bytep eXIf_buf) -{ - int i; - - png_debug1(1, "in %s storage function", "eXIf"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (info_ptr->exif) - { - png_free(png_ptr, info_ptr->exif); - info_ptr->exif = NULL; - } - - info_ptr->num_exif = num_exif; - - info_ptr->exif = png_voidcast(png_bytep, png_malloc_warn(png_ptr, - info_ptr->num_exif)); - - if (info_ptr->exif == NULL) - { - png_warning(png_ptr, "Insufficient memory for eXIf chunk data"); - return; - } - - info_ptr->free_me |= PNG_FREE_EXIF; - - for (i = 0; i < (int) info_ptr->num_exif; i++) - info_ptr->exif[i] = eXIf_buf[i]; - - info_ptr->valid |= PNG_INFO_eXIf; -} -#endif /* eXIf */ - -#ifdef PNG_gAMA_SUPPORTED -void PNGFAPI -png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr, - png_fixed_point file_gamma) -{ - png_debug1(1, "in %s storage function", "gAMA"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_colorspace_set_gamma(png_ptr, &info_ptr->colorspace, file_gamma); - png_colorspace_sync_info(png_ptr, info_ptr); -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_gAMA(png_const_structrp png_ptr, png_inforp info_ptr, double file_gamma) -{ - png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma, - "png_set_gAMA")); -} -# endif -#endif - -#ifdef PNG_hIST_SUPPORTED -void PNGAPI -png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_uint_16p hist) -{ - int i; - - png_debug1(1, "in %s storage function", "hIST"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (info_ptr->num_palette == 0 || info_ptr->num_palette - > PNG_MAX_PALETTE_LENGTH) - { - png_warning(png_ptr, - "Invalid palette size, hIST allocation skipped"); - - return; - } - - png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); - - /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in - * version 1.2.1 - */ - info_ptr->hist = png_voidcast(png_uint_16p, png_malloc_warn(png_ptr, - PNG_MAX_PALETTE_LENGTH * (sizeof (png_uint_16)))); - - if (info_ptr->hist == NULL) - { - png_warning(png_ptr, "Insufficient memory for hIST chunk data"); - - return; - } - - info_ptr->free_me |= PNG_FREE_HIST; - - for (i = 0; i < info_ptr->num_palette; i++) - info_ptr->hist[i] = hist[i]; - - info_ptr->valid |= PNG_INFO_hIST; -} -#endif - -void PNGAPI -png_set_IHDR(png_const_structrp png_ptr, png_inforp info_ptr, - png_uint_32 width, png_uint_32 height, int bit_depth, - int color_type, int interlace_type, int compression_type, - int filter_type) -{ - png_debug1(1, "in %s storage function", "IHDR"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->width = width; - info_ptr->height = height; - info_ptr->bit_depth = (png_byte)bit_depth; - info_ptr->color_type = (png_byte)color_type; - info_ptr->compression_type = (png_byte)compression_type; - info_ptr->filter_type = (png_byte)filter_type; - info_ptr->interlace_type = (png_byte)interlace_type; - - png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, - info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, - info_ptr->compression_type, info_ptr->filter_type); - - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - info_ptr->channels = 1; - - else if ((info_ptr->color_type & PNG_COLOR_MASK_COLOR) != 0) - info_ptr->channels = 3; - - else - info_ptr->channels = 1; - - if ((info_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0) - info_ptr->channels++; - - info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); - - info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); -} - -#ifdef PNG_oFFs_SUPPORTED -void PNGAPI -png_set_oFFs(png_const_structrp png_ptr, png_inforp info_ptr, - png_int_32 offset_x, png_int_32 offset_y, int unit_type) -{ - png_debug1(1, "in %s storage function", "oFFs"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->x_offset = offset_x; - info_ptr->y_offset = offset_y; - info_ptr->offset_unit_type = (png_byte)unit_type; - info_ptr->valid |= PNG_INFO_oFFs; -} -#endif - -#ifdef PNG_pCAL_SUPPORTED -void PNGAPI -png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type, - int nparams, png_const_charp units, png_charpp params) -{ - png_size_t length; - int i; - - png_debug1(1, "in %s storage function", "pCAL"); - - if (png_ptr == NULL || info_ptr == NULL || purpose == NULL || units == NULL - || (nparams > 0 && params == NULL)) - return; - - length = strlen(purpose) + 1; - png_debug1(3, "allocating purpose for info (%lu bytes)", - (unsigned long)length); - - /* TODO: validate format of calibration name and unit name */ - - /* Check that the type matches the specification. */ - if (type < 0 || type > 3) - { - png_chunk_report(png_ptr, "Invalid pCAL equation type", - PNG_CHUNK_WRITE_ERROR); - return; - } - - if (nparams < 0 || nparams > 255) - { - png_chunk_report(png_ptr, "Invalid pCAL parameter count", - PNG_CHUNK_WRITE_ERROR); - return; - } - - /* Validate params[nparams] */ - for (i=0; ipcal_purpose = png_voidcast(png_charp, - png_malloc_warn(png_ptr, length)); - - if (info_ptr->pcal_purpose == NULL) - { - png_chunk_report(png_ptr, "Insufficient memory for pCAL purpose", - PNG_CHUNK_WRITE_ERROR); - return; - } - - memcpy(info_ptr->pcal_purpose, purpose, length); - - png_debug(3, "storing X0, X1, type, and nparams in info"); - info_ptr->pcal_X0 = X0; - info_ptr->pcal_X1 = X1; - info_ptr->pcal_type = (png_byte)type; - info_ptr->pcal_nparams = (png_byte)nparams; - - length = strlen(units) + 1; - png_debug1(3, "allocating units for info (%lu bytes)", - (unsigned long)length); - - info_ptr->pcal_units = png_voidcast(png_charp, - png_malloc_warn(png_ptr, length)); - - if (info_ptr->pcal_units == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL units"); - - return; - } - - memcpy(info_ptr->pcal_units, units, length); - - info_ptr->pcal_params = png_voidcast(png_charpp, png_malloc_warn(png_ptr, - (png_size_t)(((unsigned int)nparams + 1) * (sizeof (png_charp))))); - - if (info_ptr->pcal_params == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL params"); - - return; - } - - memset(info_ptr->pcal_params, 0, ((unsigned int)nparams + 1) * - (sizeof (png_charp))); - - for (i = 0; i < nparams; i++) - { - length = strlen(params[i]) + 1; - png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, - (unsigned long)length); - - info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); - - if (info_ptr->pcal_params[i] == NULL) - { - png_warning(png_ptr, "Insufficient memory for pCAL parameter"); - - return; - } - - memcpy(info_ptr->pcal_params[i], params[i], length); - } - - info_ptr->valid |= PNG_INFO_pCAL; - info_ptr->free_me |= PNG_FREE_PCAL; -} -#endif - -#ifdef PNG_sCAL_SUPPORTED -void PNGAPI -png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr, - int unit, png_const_charp swidth, png_const_charp sheight) -{ - png_size_t lengthw = 0, lengthh = 0; - - png_debug1(1, "in %s storage function", "sCAL"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - /* Double check the unit (should never get here with an invalid - * unit unless this is an API call.) - */ - if (unit != 1 && unit != 2) - png_error(png_ptr, "Invalid sCAL unit"); - - if (swidth == NULL || (lengthw = strlen(swidth)) == 0 || - swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw)) - png_error(png_ptr, "Invalid sCAL width"); - - if (sheight == NULL || (lengthh = strlen(sheight)) == 0 || - sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh)) - png_error(png_ptr, "Invalid sCAL height"); - - info_ptr->scal_unit = (png_byte)unit; - - ++lengthw; - - png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw); - - info_ptr->scal_s_width = png_voidcast(png_charp, - png_malloc_warn(png_ptr, lengthw)); - - if (info_ptr->scal_s_width == NULL) - { - png_warning(png_ptr, "Memory allocation failed while processing sCAL"); - - return; - } - - memcpy(info_ptr->scal_s_width, swidth, lengthw); - - ++lengthh; - - png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh); - - info_ptr->scal_s_height = png_voidcast(png_charp, - png_malloc_warn(png_ptr, lengthh)); - - if (info_ptr->scal_s_height == NULL) - { - png_free (png_ptr, info_ptr->scal_s_width); - info_ptr->scal_s_width = NULL; - - png_warning(png_ptr, "Memory allocation failed while processing sCAL"); - - return; - } - - memcpy(info_ptr->scal_s_height, sheight, lengthh); - - info_ptr->valid |= PNG_INFO_sCAL; - info_ptr->free_me |= PNG_FREE_SCAL; -} - -# ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_sCAL(png_const_structrp png_ptr, png_inforp info_ptr, int unit, - double width, double height) -{ - png_debug1(1, "in %s storage function", "sCAL"); - - /* Check the arguments. */ - if (width <= 0) - png_warning(png_ptr, "Invalid sCAL width ignored"); - - else if (height <= 0) - png_warning(png_ptr, "Invalid sCAL height ignored"); - - else - { - /* Convert 'width' and 'height' to ASCII. */ - char swidth[PNG_sCAL_MAX_DIGITS+1]; - char sheight[PNG_sCAL_MAX_DIGITS+1]; - - png_ascii_from_fp(png_ptr, swidth, (sizeof swidth), width, - PNG_sCAL_PRECISION); - png_ascii_from_fp(png_ptr, sheight, (sizeof sheight), height, - PNG_sCAL_PRECISION); - - png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); - } -} -# endif - -# ifdef PNG_FIXED_POINT_SUPPORTED -void PNGAPI -png_set_sCAL_fixed(png_const_structrp png_ptr, png_inforp info_ptr, int unit, - png_fixed_point width, png_fixed_point height) -{ - png_debug1(1, "in %s storage function", "sCAL"); - - /* Check the arguments. */ - if (width <= 0) - png_warning(png_ptr, "Invalid sCAL width ignored"); - - else if (height <= 0) - png_warning(png_ptr, "Invalid sCAL height ignored"); - - else - { - /* Convert 'width' and 'height' to ASCII. */ - char swidth[PNG_sCAL_MAX_DIGITS+1]; - char sheight[PNG_sCAL_MAX_DIGITS+1]; - - png_ascii_from_fixed(png_ptr, swidth, (sizeof swidth), width); - png_ascii_from_fixed(png_ptr, sheight, (sizeof sheight), height); - - png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); - } -} -# endif -#endif - -#ifdef PNG_pHYs_SUPPORTED -void PNGAPI -png_set_pHYs(png_const_structrp png_ptr, png_inforp info_ptr, - png_uint_32 res_x, png_uint_32 res_y, int unit_type) -{ - png_debug1(1, "in %s storage function", "pHYs"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - info_ptr->x_pixels_per_unit = res_x; - info_ptr->y_pixels_per_unit = res_y; - info_ptr->phys_unit_type = (png_byte)unit_type; - info_ptr->valid |= PNG_INFO_pHYs; -} -#endif - -void PNGAPI -png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr, - png_const_colorp palette, int num_palette) -{ - - png_uint_32 max_palette_length; - - png_debug1(1, "in %s storage function", "PLTE"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - max_palette_length = (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ? - (1 << info_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH; - - if (num_palette < 0 || num_palette > (int) max_palette_length) - { - if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - png_error(png_ptr, "Invalid palette length"); - - else - { - png_warning(png_ptr, "Invalid palette length"); - - return; - } - } - - if ((num_palette > 0 && palette == NULL) || - (num_palette == 0 -# ifdef PNG_MNG_FEATURES_SUPPORTED - && (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0 -# endif - )) - { - png_error(png_ptr, "Invalid palette"); - } - - /* It may not actually be necessary to set png_ptr->palette here; - * we do it for backward compatibility with the way the png_handle_tRNS - * function used to do the allocation. - * - * 1.6.0: the above statement appears to be incorrect; something has to set - * the palette inside png_struct on read. - */ - png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); - - /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead - * of num_palette entries, in case of an invalid PNG file or incorrect - * call to png_set_PLTE() with too-large sample values. - */ - png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr, - PNG_MAX_PALETTE_LENGTH * (sizeof (png_color)))); - - if (num_palette > 0) - memcpy(png_ptr->palette, palette, (unsigned int)num_palette * - (sizeof (png_color))); - info_ptr->palette = png_ptr->palette; - info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette; - - info_ptr->free_me |= PNG_FREE_PLTE; - - info_ptr->valid |= PNG_INFO_PLTE; -} - -#ifdef PNG_sBIT_SUPPORTED -void PNGAPI -png_set_sBIT(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_color_8p sig_bit) -{ - png_debug1(1, "in %s storage function", "sBIT"); - - if (png_ptr == NULL || info_ptr == NULL || sig_bit == NULL) - return; - - info_ptr->sig_bit = *sig_bit; - info_ptr->valid |= PNG_INFO_sBIT; -} -#endif - -#ifdef PNG_sRGB_SUPPORTED -void PNGAPI -png_set_sRGB(png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent) -{ - png_debug1(1, "in %s storage function", "sRGB"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - (void)png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent); - png_colorspace_sync_info(png_ptr, info_ptr); -} - -void PNGAPI -png_set_sRGB_gAMA_and_cHRM(png_const_structrp png_ptr, png_inforp info_ptr, - int srgb_intent) -{ - png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, - srgb_intent) != 0) - { - /* This causes the gAMA and cHRM to be written too */ - info_ptr->colorspace.flags |= - PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM; - } - - png_colorspace_sync_info(png_ptr, info_ptr); -} -#endif /* sRGB */ - - -#ifdef PNG_iCCP_SUPPORTED -void PNGAPI -png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_charp name, int compression_type, - png_const_bytep profile, png_uint_32 proflen) -{ - png_charp new_iccp_name; - png_bytep new_iccp_profile; - png_size_t length; - - png_debug1(1, "in %s storage function", "iCCP"); - - if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) - return; - - if (compression_type != PNG_COMPRESSION_TYPE_BASE) - png_app_error(png_ptr, "Invalid iCCP compression method"); - - /* Set the colorspace first because this validates the profile; do not - * override previously set app cHRM or gAMA here (because likely as not the - * application knows better than libpng what the correct values are.) Pass - * the info_ptr color_type field to png_colorspace_set_ICC because in the - * write case it has not yet been stored in png_ptr. - */ - { - int result = png_colorspace_set_ICC(png_ptr, &info_ptr->colorspace, name, - proflen, profile, info_ptr->color_type); - - png_colorspace_sync_info(png_ptr, info_ptr); - - /* Don't do any of the copying if the profile was bad, or inconsistent. */ - if (result == 0) - return; - - /* But do write the gAMA and cHRM chunks from the profile. */ - info_ptr->colorspace.flags |= - PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM; - } - - length = strlen(name)+1; - new_iccp_name = png_voidcast(png_charp, png_malloc_warn(png_ptr, length)); - - if (new_iccp_name == NULL) - { - png_benign_error(png_ptr, "Insufficient memory to process iCCP chunk"); - - return; - } - - memcpy(new_iccp_name, name, length); - new_iccp_profile = png_voidcast(png_bytep, - png_malloc_warn(png_ptr, proflen)); - - if (new_iccp_profile == NULL) - { - png_free(png_ptr, new_iccp_name); - png_benign_error(png_ptr, - "Insufficient memory to process iCCP profile"); - - return; - } - - memcpy(new_iccp_profile, profile, proflen); - - png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); - - info_ptr->iccp_proflen = proflen; - info_ptr->iccp_name = new_iccp_name; - info_ptr->iccp_profile = new_iccp_profile; - info_ptr->free_me |= PNG_FREE_ICCP; - info_ptr->valid |= PNG_INFO_iCCP; -} -#endif - -#ifdef PNG_TEXT_SUPPORTED -void PNGAPI -png_set_text(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_textp text_ptr, int num_text) -{ - int ret; - ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); - - if (ret != 0) - png_error(png_ptr, "Insufficient memory to store text"); -} - -int /* PRIVATE */ -png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_textp text_ptr, int num_text) -{ - int i; - - png_debug1(1, "in %lx storage function", png_ptr == NULL ? 0xabadca11U : - (unsigned long)png_ptr->chunk_name); - - if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL) - return(0); - - /* Make sure we have enough space in the "text" array in info_struct - * to hold all of the incoming text_ptr objects. This compare can't overflow - * because max_text >= num_text (anyway, subtract of two positive integers - * can't overflow in any case.) - */ - if (num_text > info_ptr->max_text - info_ptr->num_text) - { - int old_num_text = info_ptr->num_text; - int max_text; - png_textp new_text = NULL; - - /* Calculate an appropriate max_text, checking for overflow. */ - max_text = old_num_text; - if (num_text <= INT_MAX - max_text) - { - max_text += num_text; - - /* Round up to a multiple of 8 */ - if (max_text < INT_MAX-8) - max_text = (max_text + 8) & ~0x7; - - else - max_text = INT_MAX; - - /* Now allocate a new array and copy the old members in; this does all - * the overflow checks. - */ - new_text = png_voidcast(png_textp,png_realloc_array(png_ptr, - info_ptr->text, old_num_text, max_text-old_num_text, - sizeof *new_text)); - } - - if (new_text == NULL) - { - png_chunk_report(png_ptr, "too many text chunks", - PNG_CHUNK_WRITE_ERROR); - - return 1; - } - - png_free(png_ptr, info_ptr->text); - - info_ptr->text = new_text; - info_ptr->free_me |= PNG_FREE_TEXT; - info_ptr->max_text = max_text; - /* num_text is adjusted below as the entries are copied in */ - - png_debug1(3, "allocated %d entries for info_ptr->text", max_text); - } - - for (i = 0; i < num_text; i++) - { - size_t text_length, key_len; - size_t lang_len, lang_key_len; - png_textp textp = &(info_ptr->text[info_ptr->num_text]); - - if (text_ptr[i].key == NULL) - continue; - - if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE || - text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST) - { - png_chunk_report(png_ptr, "text compression mode is out of range", - PNG_CHUNK_WRITE_ERROR); - continue; - } - - key_len = strlen(text_ptr[i].key); - - if (text_ptr[i].compression <= 0) - { - lang_len = 0; - lang_key_len = 0; - } - - else -# ifdef PNG_iTXt_SUPPORTED - { - /* Set iTXt data */ - - if (text_ptr[i].lang != NULL) - lang_len = strlen(text_ptr[i].lang); - - else - lang_len = 0; - - if (text_ptr[i].lang_key != NULL) - lang_key_len = strlen(text_ptr[i].lang_key); - - else - lang_key_len = 0; - } -# else /* iTXt */ - { - png_chunk_report(png_ptr, "iTXt chunk not supported", - PNG_CHUNK_WRITE_ERROR); - continue; - } -# endif - - if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') - { - text_length = 0; -# ifdef PNG_iTXt_SUPPORTED - if (text_ptr[i].compression > 0) - textp->compression = PNG_ITXT_COMPRESSION_NONE; - - else -# endif - textp->compression = PNG_TEXT_COMPRESSION_NONE; - } - - else - { - text_length = strlen(text_ptr[i].text); - textp->compression = text_ptr[i].compression; - } - - textp->key = png_voidcast(png_charp,png_malloc_base(png_ptr, - key_len + text_length + lang_len + lang_key_len + 4)); - - if (textp->key == NULL) - { - png_chunk_report(png_ptr, "text chunk: out of memory", - PNG_CHUNK_WRITE_ERROR); - - return 1; - } - - png_debug2(2, "Allocated %lu bytes at %p in png_set_text", - (unsigned long)(png_uint_32) - (key_len + lang_len + lang_key_len + text_length + 4), - textp->key); - - memcpy(textp->key, text_ptr[i].key, key_len); - *(textp->key + key_len) = '\0'; - - if (text_ptr[i].compression > 0) - { - textp->lang = textp->key + key_len + 1; - memcpy(textp->lang, text_ptr[i].lang, lang_len); - *(textp->lang + lang_len) = '\0'; - textp->lang_key = textp->lang + lang_len + 1; - memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); - *(textp->lang_key + lang_key_len) = '\0'; - textp->text = textp->lang_key + lang_key_len + 1; - } - - else - { - textp->lang=NULL; - textp->lang_key=NULL; - textp->text = textp->key + key_len + 1; - } - - if (text_length != 0) - memcpy(textp->text, text_ptr[i].text, text_length); - - *(textp->text + text_length) = '\0'; - -# ifdef PNG_iTXt_SUPPORTED - if (textp->compression > 0) - { - textp->text_length = 0; - textp->itxt_length = text_length; - } - - else -# endif - { - textp->text_length = text_length; - textp->itxt_length = 0; - } - - info_ptr->num_text++; - png_debug1(3, "transferred text chunk %d", info_ptr->num_text); - } - - return(0); -} -#endif - -#ifdef PNG_tIME_SUPPORTED -void PNGAPI -png_set_tIME(png_const_structrp png_ptr, png_inforp info_ptr, - png_const_timep mod_time) -{ - png_debug1(1, "in %s storage function", "tIME"); - - if (png_ptr == NULL || info_ptr == NULL || mod_time == NULL || - (png_ptr->mode & PNG_WROTE_tIME) != 0) - return; - - if (mod_time->month == 0 || mod_time->month > 12 || - mod_time->day == 0 || mod_time->day > 31 || - mod_time->hour > 23 || mod_time->minute > 59 || - mod_time->second > 60) - { - png_warning(png_ptr, "Ignoring invalid time value"); - - return; - } - - info_ptr->mod_time = *mod_time; - info_ptr->valid |= PNG_INFO_tIME; -} -#endif - -#ifdef PNG_tRNS_SUPPORTED -void PNGAPI -png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr, - png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color) -{ - png_debug1(1, "in %s storage function", "tRNS"); - - if (png_ptr == NULL || info_ptr == NULL) - - return; - - if (trans_alpha != NULL) - { - /* It may not actually be necessary to set png_ptr->trans_alpha here; - * we do it for backward compatibility with the way the png_handle_tRNS - * function used to do the allocation. - * - * 1.6.0: The above statement is incorrect; png_handle_tRNS effectively - * relies on png_set_tRNS storing the information in png_struct - * (otherwise it won't be there for the code in pngrtran.c). - */ - - png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); - - if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) - { - /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ - info_ptr->trans_alpha = png_voidcast(png_bytep, - png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH)); - memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans); - } - png_ptr->trans_alpha = info_ptr->trans_alpha; - } - - if (trans_color != NULL) - { -#ifdef PNG_WARNINGS_SUPPORTED - if (info_ptr->bit_depth < 16) - { - int sample_max = (1 << info_ptr->bit_depth) - 1; - - if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && - trans_color->gray > sample_max) || - (info_ptr->color_type == PNG_COLOR_TYPE_RGB && - (trans_color->red > sample_max || - trans_color->green > sample_max || - trans_color->blue > sample_max))) - png_warning(png_ptr, - "tRNS chunk has out-of-range samples for bit_depth"); - } -#endif - - info_ptr->trans_color = *trans_color; - - if (num_trans == 0) - num_trans = 1; - } - - info_ptr->num_trans = (png_uint_16)num_trans; - - if (num_trans != 0) - { - info_ptr->valid |= PNG_INFO_tRNS; - info_ptr->free_me |= PNG_FREE_TRNS; - } -} -#endif - -#ifdef PNG_sPLT_SUPPORTED -void PNGAPI -png_set_sPLT(png_const_structrp png_ptr, - png_inforp info_ptr, png_const_sPLT_tp entries, int nentries) -/* - * entries - array of png_sPLT_t structures - * to be added to the list of palettes - * in the info structure. - * - * nentries - number of palette structures to be - * added. - */ -{ - png_sPLT_tp np; - - if (png_ptr == NULL || info_ptr == NULL || nentries <= 0 || entries == NULL) - return; - - /* Use the internal realloc function, which checks for all the possible - * overflows. Notice that the parameters are (int) and (size_t) - */ - np = png_voidcast(png_sPLT_tp,png_realloc_array(png_ptr, - info_ptr->splt_palettes, info_ptr->splt_palettes_num, nentries, - sizeof *np)); - - if (np == NULL) - { - /* Out of memory or too many chunks */ - png_chunk_report(png_ptr, "too many sPLT chunks", PNG_CHUNK_WRITE_ERROR); - - return; - } - - png_free(png_ptr, info_ptr->splt_palettes); - info_ptr->splt_palettes = np; - info_ptr->free_me |= PNG_FREE_SPLT; - - np += info_ptr->splt_palettes_num; - - do - { - png_size_t length; - - /* Skip invalid input entries */ - if (entries->name == NULL || entries->entries == NULL) - { - /* png_handle_sPLT doesn't do this, so this is an app error */ - png_app_error(png_ptr, "png_set_sPLT: invalid sPLT"); - /* Just skip the invalid entry */ - continue; - } - - np->depth = entries->depth; - - /* In the event of out-of-memory just return - there's no point keeping - * on trying to add sPLT chunks. - */ - length = strlen(entries->name) + 1; - np->name = png_voidcast(png_charp, png_malloc_base(png_ptr, length)); - - if (np->name == NULL) - break; - - memcpy(np->name, entries->name, length); - - /* IMPORTANT: we have memory now that won't get freed if something else - * goes wrong; this code must free it. png_malloc_array produces no - * warnings; use a png_chunk_report (below) if there is an error. - */ - np->entries = png_voidcast(png_sPLT_entryp, png_malloc_array(png_ptr, - entries->nentries, sizeof (png_sPLT_entry))); - - if (np->entries == NULL) - { - png_free(png_ptr, np->name); - np->name = NULL; - break; - } - - np->nentries = entries->nentries; - /* This multiply can't overflow because png_malloc_array has already - * checked it when doing the allocation. - */ - memcpy(np->entries, entries->entries, - (unsigned int)entries->nentries * sizeof (png_sPLT_entry)); - - /* Note that 'continue' skips the advance of the out pointer and out - * count, so an invalid entry is not added. - */ - info_ptr->valid |= PNG_INFO_sPLT; - ++(info_ptr->splt_palettes_num); - ++np; - ++entries; - } - while (--nentries); - - if (nentries > 0) - png_chunk_report(png_ptr, "sPLT out of memory", PNG_CHUNK_WRITE_ERROR); -} -#endif /* sPLT */ - -#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED -static png_byte -check_location(png_const_structrp png_ptr, int location) -{ - location &= (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT); - - /* New in 1.6.0; copy the location and check it. This is an API - * change; previously the app had to use the - * png_set_unknown_chunk_location API below for each chunk. - */ - if (location == 0 && (png_ptr->mode & PNG_IS_READ_STRUCT) == 0) - { - /* Write struct, so unknown chunks come from the app */ - png_app_warning(png_ptr, - "png_set_unknown_chunks now expects a valid location"); - /* Use the old behavior */ - location = (png_byte)(png_ptr->mode & - (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT)); - } - - /* This need not be an internal error - if the app calls - * png_set_unknown_chunks on a read pointer it must get the location right. - */ - if (location == 0) - png_error(png_ptr, "invalid location in png_set_unknown_chunks"); - - /* Now reduce the location to the top-most set bit by removing each least - * significant bit in turn. - */ - while (location != (location & -location)) - location &= ~(location & -location); - - /* The cast is safe because 'location' is a bit mask and only the low four - * bits are significant. - */ - return (png_byte)location; -} - -void PNGAPI -png_set_unknown_chunks(png_const_structrp png_ptr, - png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns) -{ - png_unknown_chunkp np; - - if (png_ptr == NULL || info_ptr == NULL || num_unknowns <= 0 || - unknowns == NULL) - return; - - /* Check for the failure cases where support has been disabled at compile - * time. This code is hardly ever compiled - it's here because - * STORE_UNKNOWN_CHUNKS is set by both read and write code (compiling in this - * code) but may be meaningless if the read or write handling of unknown - * chunks is not compiled in. - */ -# if !defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) && \ - defined(PNG_READ_SUPPORTED) - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0) - { - png_app_error(png_ptr, "no unknown chunk support on read"); - - return; - } -# endif -# if !defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED) && \ - defined(PNG_WRITE_SUPPORTED) - if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0) - { - png_app_error(png_ptr, "no unknown chunk support on write"); - - return; - } -# endif - - /* Prior to 1.6.0 this code used png_malloc_warn; however, this meant that - * unknown critical chunks could be lost with just a warning resulting in - * undefined behavior. Now png_chunk_report is used to provide behavior - * appropriate to read or write. - */ - np = png_voidcast(png_unknown_chunkp, png_realloc_array(png_ptr, - info_ptr->unknown_chunks, info_ptr->unknown_chunks_num, num_unknowns, - sizeof *np)); - - if (np == NULL) - { - png_chunk_report(png_ptr, "too many unknown chunks", - PNG_CHUNK_WRITE_ERROR); - - return; - } - - png_free(png_ptr, info_ptr->unknown_chunks); - info_ptr->unknown_chunks = np; /* safe because it is initialized */ - info_ptr->free_me |= PNG_FREE_UNKN; - - np += info_ptr->unknown_chunks_num; - - /* Increment unknown_chunks_num each time round the loop to protect the - * just-allocated chunk data. - */ - for (; num_unknowns > 0; --num_unknowns, ++unknowns) - { - memcpy(np->name, unknowns->name, (sizeof np->name)); - np->name[(sizeof np->name)-1] = '\0'; - np->location = check_location(png_ptr, unknowns->location); - - if (unknowns->size == 0) - { - np->data = NULL; - np->size = 0; - } - - else - { - np->data = png_voidcast(png_bytep, - png_malloc_base(png_ptr, unknowns->size)); - - if (np->data == NULL) - { - png_chunk_report(png_ptr, "unknown chunk: out of memory", - PNG_CHUNK_WRITE_ERROR); - /* But just skip storing the unknown chunk */ - continue; - } - - memcpy(np->data, unknowns->data, unknowns->size); - np->size = unknowns->size; - } - - /* These increments are skipped on out-of-memory for the data - the - * unknown chunk entry gets overwritten if the png_chunk_report returns. - * This is correct in the read case (the chunk is just dropped.) - */ - ++np; - ++(info_ptr->unknown_chunks_num); - } -} - -void PNGAPI -png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr, - int chunk, int location) -{ - /* This API is pretty pointless in 1.6.0 because the location can be set - * before the call to png_set_unknown_chunks. - * - * TODO: add a png_app_warning in 1.7 - */ - if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && - chunk < info_ptr->unknown_chunks_num) - { - if ((location & (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT)) == 0) - { - png_app_error(png_ptr, "invalid unknown chunk location"); - /* Fake out the pre 1.6.0 behavior: */ - if (((unsigned int)location & PNG_HAVE_IDAT) != 0) /* undocumented! */ - location = PNG_AFTER_IDAT; - - else - location = PNG_HAVE_IHDR; /* also undocumented */ - } - - info_ptr->unknown_chunks[chunk].location = - check_location(png_ptr, location); - } -} -#endif /* STORE_UNKNOWN_CHUNKS */ - -#ifdef PNG_MNG_FEATURES_SUPPORTED -png_uint_32 PNGAPI -png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features) -{ - png_debug(1, "in png_permit_mng_features"); - - if (png_ptr == NULL) - return 0; - - png_ptr->mng_features_permitted = mng_features & PNG_ALL_MNG_FEATURES; - - return png_ptr->mng_features_permitted; -} -#endif - -#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED -static unsigned int -add_one_chunk(png_bytep list, unsigned int count, png_const_bytep add, int keep) -{ - unsigned int i; - - /* Utility function: update the 'keep' state of a chunk if it is already in - * the list, otherwise add it to the list. - */ - for (i=0; i= PNG_HANDLE_CHUNK_LAST) - { - png_app_error(png_ptr, "png_set_keep_unknown_chunks: invalid keep"); - - return; - } - - if (num_chunks_in <= 0) - { - png_ptr->unknown_default = keep; - - /* '0' means just set the flags, so stop here */ - if (num_chunks_in == 0) - return; - } - - if (num_chunks_in < 0) - { - /* Ignore all unknown chunks and all chunks recognized by - * libpng except for IHDR, PLTE, tRNS, IDAT, and IEND - */ - static PNG_CONST png_byte chunks_to_ignore[] = { - 98, 75, 71, 68, '\0', /* bKGD */ - 99, 72, 82, 77, '\0', /* cHRM */ - 101, 88, 73, 102, '\0', /* eXIf */ - 103, 65, 77, 65, '\0', /* gAMA */ - 104, 73, 83, 84, '\0', /* hIST */ - 105, 67, 67, 80, '\0', /* iCCP */ - 105, 84, 88, 116, '\0', /* iTXt */ - 111, 70, 70, 115, '\0', /* oFFs */ - 112, 67, 65, 76, '\0', /* pCAL */ - 112, 72, 89, 115, '\0', /* pHYs */ - 115, 66, 73, 84, '\0', /* sBIT */ - 115, 67, 65, 76, '\0', /* sCAL */ - 115, 80, 76, 84, '\0', /* sPLT */ - 115, 84, 69, 82, '\0', /* sTER */ - 115, 82, 71, 66, '\0', /* sRGB */ - 116, 69, 88, 116, '\0', /* tEXt */ - 116, 73, 77, 69, '\0', /* tIME */ - 122, 84, 88, 116, '\0' /* zTXt */ - }; - - chunk_list = chunks_to_ignore; - num_chunks = (unsigned int)/*SAFE*/(sizeof chunks_to_ignore)/5U; - } - - else /* num_chunks_in > 0 */ - { - if (chunk_list == NULL) - { - /* Prior to 1.6.0 this was silently ignored, now it is an app_error - * which can be switched off. - */ - png_app_error(png_ptr, "png_set_keep_unknown_chunks: no chunk list"); - - return; - } - - num_chunks = (unsigned int)num_chunks_in; - } - - old_num_chunks = png_ptr->num_chunk_list; - if (png_ptr->chunk_list == NULL) - old_num_chunks = 0; - - /* Since num_chunks is always restricted to UINT_MAX/5 this can't overflow. - */ - if (num_chunks + old_num_chunks > UINT_MAX/5) - { - png_app_error(png_ptr, "png_set_keep_unknown_chunks: too many chunks"); - - return; - } - - /* If these chunks are being reset to the default then no more memory is - * required because add_one_chunk above doesn't extend the list if the 'keep' - * parameter is the default. - */ - if (keep != 0) - { - new_list = png_voidcast(png_bytep, png_malloc(png_ptr, - 5 * (num_chunks + old_num_chunks))); - - if (old_num_chunks > 0) - memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks); - } - - else if (old_num_chunks > 0) - new_list = png_ptr->chunk_list; - - else - new_list = NULL; - - /* Add the new chunks together with each one's handling code. If the chunk - * already exists the code is updated, otherwise the chunk is added to the - * end. (In libpng 1.6.0 order no longer matters because this code enforces - * the earlier convention that the last setting is the one that is used.) - */ - if (new_list != NULL) - { - png_const_bytep inlist; - png_bytep outlist; - unsigned int i; - - for (i=0; ichunk_list != new_list) - png_free(png_ptr, new_list); - - new_list = NULL; - } - } - - else - num_chunks = 0; - - png_ptr->num_chunk_list = num_chunks; - - if (png_ptr->chunk_list != new_list) - { - if (png_ptr->chunk_list != NULL) - png_free(png_ptr, png_ptr->chunk_list); - - png_ptr->chunk_list = new_list; - } -} -#endif - -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED -void PNGAPI -png_set_read_user_chunk_fn(png_structrp png_ptr, png_voidp user_chunk_ptr, - png_user_chunk_ptr read_user_chunk_fn) -{ - png_debug(1, "in png_set_read_user_chunk_fn"); - - if (png_ptr == NULL) - return; - - png_ptr->read_user_chunk_fn = read_user_chunk_fn; - png_ptr->user_chunk_ptr = user_chunk_ptr; -} -#endif - -#ifdef PNG_INFO_IMAGE_SUPPORTED -void PNGAPI -png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr, - png_bytepp row_pointers) -{ - png_debug1(1, "in %s storage function", "rows"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if (info_ptr->row_pointers != NULL && - (info_ptr->row_pointers != row_pointers)) - png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); - - info_ptr->row_pointers = row_pointers; - - if (row_pointers != NULL) - info_ptr->valid |= PNG_INFO_IDAT; -} -#endif - -void PNGAPI -png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size) -{ - if (png_ptr == NULL) - return; - - if (size == 0 || size > PNG_UINT_31_MAX) - png_error(png_ptr, "invalid compression buffer size"); - -# ifdef PNG_SEQUENTIAL_READ_SUPPORTED - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0) - { - png_ptr->IDAT_read_size = (png_uint_32)size; /* checked above */ - return; - } -# endif - -# ifdef PNG_WRITE_SUPPORTED - if ((png_ptr->mode & PNG_IS_READ_STRUCT) == 0) - { - if (png_ptr->zowner != 0) - { - png_warning(png_ptr, - "Compression buffer size cannot be changed because it is in use"); - - return; - } - -#ifndef __COVERITY__ - /* Some compilers complain that this is always false. However, it - * can be true when integer overflow happens. - */ - if (size > ZLIB_IO_MAX) - { - png_warning(png_ptr, - "Compression buffer size limited to system maximum"); - size = ZLIB_IO_MAX; /* must fit */ - } -#endif - - if (size < 6) - { - /* Deflate will potentially go into an infinite loop on a SYNC_FLUSH - * if this is permitted. - */ - png_warning(png_ptr, - "Compression buffer size cannot be reduced below 6"); - - return; - } - - if (png_ptr->zbuffer_size != size) - { - png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list); - png_ptr->zbuffer_size = (uInt)size; - } - } -# endif -} - -void PNGAPI -png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask) -{ - if (png_ptr != NULL && info_ptr != NULL) - info_ptr->valid &= (unsigned int)(~mask); -} - - -#ifdef PNG_SET_USER_LIMITS_SUPPORTED -/* This function was added to libpng 1.2.6 */ -void PNGAPI -png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max, - png_uint_32 user_height_max) -{ - /* Images with dimensions larger than these limits will be - * rejected by png_set_IHDR(). To accept any PNG datastream - * regardless of dimensions, set both limits to 0x7fffffff. - */ - if (png_ptr == NULL) - return; - - png_ptr->user_width_max = user_width_max; - png_ptr->user_height_max = user_height_max; -} - -/* This function was added to libpng 1.4.0 */ -void PNGAPI -png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max) -{ - if (png_ptr != NULL) - png_ptr->user_chunk_cache_max = user_chunk_cache_max; -} - -/* This function was added to libpng 1.4.1 */ -void PNGAPI -png_set_chunk_malloc_max (png_structrp png_ptr, - png_alloc_size_t user_chunk_malloc_max) -{ - if (png_ptr != NULL) - png_ptr->user_chunk_malloc_max = user_chunk_malloc_max; -} -#endif /* ?SET_USER_LIMITS */ - - -#ifdef PNG_BENIGN_ERRORS_SUPPORTED -void PNGAPI -png_set_benign_errors(png_structrp png_ptr, int allowed) -{ - png_debug(1, "in png_set_benign_errors"); - - /* If allowed is 1, png_benign_error() is treated as a warning. - * - * If allowed is 0, png_benign_error() is treated as an error (which - * is the default behavior if png_set_benign_errors() is not called). - */ - - if (allowed != 0) - png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN | - PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN; - - else - png_ptr->flags &= ~(PNG_FLAG_BENIGN_ERRORS_WARN | - PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN); -} -#endif /* BENIGN_ERRORS */ - -#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED - /* Whether to report invalid palette index; added at libng-1.5.10. - * It is possible for an indexed (color-type==3) PNG file to contain - * pixels with invalid (out-of-range) indexes if the PLTE chunk has - * fewer entries than the image's bit-depth would allow. We recover - * from this gracefully by filling any incomplete palette with zeros - * (opaque black). By default, when this occurs libpng will issue - * a benign error. This API can be used to override that behavior. - */ -void PNGAPI -png_set_check_for_invalid_index(png_structrp png_ptr, int allowed) -{ - png_debug(1, "in png_set_check_for_invalid_index"); - - if (allowed > 0) - png_ptr->num_palette_max = 0; - - else - png_ptr->num_palette_max = -1; -} -#endif - -#if defined(PNG_TEXT_SUPPORTED) || defined(PNG_pCAL_SUPPORTED) || \ - defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) -/* Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification, - * and if invalid, correct the keyword rather than discarding the entire - * chunk. The PNG 1.0 specification requires keywords 1-79 characters in - * length, forbids leading or trailing whitespace, multiple internal spaces, - * and the non-break space (0x80) from ISO 8859-1. Returns keyword length. - * - * The 'new_key' buffer must be 80 characters in size (for the keyword plus a - * trailing '\0'). If this routine returns 0 then there was no keyword, or a - * valid one could not be generated, and the caller must png_error. - */ -png_uint_32 /* PRIVATE */ -png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key) -{ -#ifdef PNG_WARNINGS_SUPPORTED - png_const_charp orig_key = key; -#endif - png_uint_32 key_len = 0; - int bad_character = 0; - int space = 1; - - png_debug(1, "in png_check_keyword"); - - if (key == NULL) - { - *new_key = 0; - return 0; - } - - while (*key && key_len < 79) - { - png_byte ch = (png_byte)*key++; - - if ((ch > 32 && ch <= 126) || (ch >= 161 /*&& ch <= 255*/)) - { - *new_key++ = ch; ++key_len; space = 0; - } - - else if (space == 0) - { - /* A space or an invalid character when one wasn't seen immediately - * before; output just a space. - */ - *new_key++ = 32; ++key_len; space = 1; - - /* If the character was not a space then it is invalid. */ - if (ch != 32) - bad_character = ch; - } - - else if (bad_character == 0) - bad_character = ch; /* just skip it, record the first error */ - } - - if (key_len > 0 && space != 0) /* trailing space */ - { - --key_len; --new_key; - if (bad_character == 0) - bad_character = 32; - } - - /* Terminate the keyword */ - *new_key = 0; - - if (key_len == 0) - return 0; - -#ifdef PNG_WARNINGS_SUPPORTED - /* Try to only output one warning per keyword: */ - if (*key != 0) /* keyword too long */ - png_warning(png_ptr, "keyword truncated"); - - else if (bad_character != 0) - { - PNG_WARNING_PARAMETERS(p) - - png_warning_parameter(p, 1, orig_key); - png_warning_parameter_signed(p, 2, PNG_NUMBER_FORMAT_02x, bad_character); - - png_formatted_warning(png_ptr, p, "keyword \"@1\": bad character '0x@2'"); - } -#else /* !WARNINGS */ - PNG_UNUSED(png_ptr) -#endif /* !WARNINGS */ - - return key_len; -} -#endif /* TEXT || pCAL || iCCP || sPLT */ -#endif /* READ || WRITE */ diff --git a/project/jni/png/pngstruct.h b/project/jni/png/pngstruct.h deleted file mode 100644 index d83f97125..000000000 --- a/project/jni/png/pngstruct.h +++ /dev/null @@ -1,483 +0,0 @@ - -/* pngstruct.h - header file for PNG reference library - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -/* The structure that holds the information to read and write PNG files. - * The only people who need to care about what is inside of this are the - * people who will be modifying the library for their own special needs. - * It should NOT be accessed directly by an application. - */ - -#ifndef PNGSTRUCT_H -#define PNGSTRUCT_H -/* zlib.h defines the structure z_stream, an instance of which is included - * in this structure and is required for decompressing the LZ compressed - * data in PNG files. - */ -#ifndef ZLIB_CONST - /* We must ensure that zlib uses 'const' in declarations. */ -# define ZLIB_CONST -#endif -#include "zlib.h" -#ifdef const - /* zlib.h sometimes #defines const to nothing, undo this. */ -# undef const -#endif - -/* zlib.h has mediocre z_const use before 1.2.6, this stuff is for compatibility - * with older builds. - */ -#if ZLIB_VERNUM < 0x1260 -# define PNGZ_MSG_CAST(s) png_constcast(char*,s) -# define PNGZ_INPUT_CAST(b) png_constcast(png_bytep,b) -#else -# define PNGZ_MSG_CAST(s) (s) -# define PNGZ_INPUT_CAST(b) (b) -#endif - -/* zlib.h declares a magic type 'uInt' that limits the amount of data that zlib - * can handle at once. This type need be no larger than 16 bits (so maximum of - * 65535), this define allows us to discover how big it is, but limited by the - * maximuum for png_size_t. The value can be overriden in a library build - * (pngusr.h, or set it in CPPFLAGS) and it works to set it to a considerably - * lower value (e.g. 255 works). A lower value may help memory usage (slightly) - * and may even improve performance on some systems (and degrade it on others.) - */ -#ifndef ZLIB_IO_MAX -# define ZLIB_IO_MAX ((uInt)-1) -#endif - -#ifdef PNG_WRITE_SUPPORTED -/* The type of a compression buffer list used by the write code. */ -typedef struct png_compression_buffer -{ - struct png_compression_buffer *next; - png_byte output[1]; /* actually zbuf_size */ -} png_compression_buffer, *png_compression_bufferp; - -#define PNG_COMPRESSION_BUFFER_SIZE(pp)\ - (offsetof(png_compression_buffer, output) + (pp)->zbuffer_size) -#endif - -/* Colorspace support; structures used in png_struct, png_info and in internal - * functions to hold and communicate information about the color space. - * - * PNG_COLORSPACE_SUPPORTED is only required if the application will perform - * colorspace corrections, otherwise all the colorspace information can be - * skipped and the size of libpng can be reduced (significantly) by compiling - * out the colorspace support. - */ -#ifdef PNG_COLORSPACE_SUPPORTED -/* The chromaticities of the red, green and blue colorants and the chromaticity - * of the corresponding white point (i.e. of rgb(1.0,1.0,1.0)). - */ -typedef struct png_xy -{ - png_fixed_point redx, redy; - png_fixed_point greenx, greeny; - png_fixed_point bluex, bluey; - png_fixed_point whitex, whitey; -} png_xy; - -/* The same data as above but encoded as CIE XYZ values. When this data comes - * from chromaticities the sum of the Y values is assumed to be 1.0 - */ -typedef struct png_XYZ -{ - png_fixed_point red_X, red_Y, red_Z; - png_fixed_point green_X, green_Y, green_Z; - png_fixed_point blue_X, blue_Y, blue_Z; -} png_XYZ; -#endif /* COLORSPACE */ - -#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED) -/* A colorspace is all the above plus, potentially, profile information; - * however at present libpng does not use the profile internally so it is only - * stored in the png_info struct (if iCCP is supported.) The rendering intent - * is retained here and is checked. - * - * The file gamma encoding information is also stored here and gamma correction - * is done by libpng, whereas color correction must currently be done by the - * application. - */ -typedef struct png_colorspace -{ -#ifdef PNG_GAMMA_SUPPORTED - png_fixed_point gamma; /* File gamma */ -#endif - -#ifdef PNG_COLORSPACE_SUPPORTED - png_xy end_points_xy; /* End points as chromaticities */ - png_XYZ end_points_XYZ; /* End points as CIE XYZ colorant values */ - png_uint_16 rendering_intent; /* Rendering intent of a profile */ -#endif - - /* Flags are always defined to simplify the code. */ - png_uint_16 flags; /* As defined below */ -} png_colorspace, * PNG_RESTRICT png_colorspacerp; - -typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp; - -/* General flags for the 'flags' field */ -#define PNG_COLORSPACE_HAVE_GAMMA 0x0001 -#define PNG_COLORSPACE_HAVE_ENDPOINTS 0x0002 -#define PNG_COLORSPACE_HAVE_INTENT 0x0004 -#define PNG_COLORSPACE_FROM_gAMA 0x0008 -#define PNG_COLORSPACE_FROM_cHRM 0x0010 -#define PNG_COLORSPACE_FROM_sRGB 0x0020 -#define PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB 0x0040 -#define PNG_COLORSPACE_MATCHES_sRGB 0x0080 /* exact match on profile */ -#define PNG_COLORSPACE_INVALID 0x8000 -#define PNG_COLORSPACE_CANCEL(flags) (0xffff ^ (flags)) -#endif /* COLORSPACE || GAMMA */ - -struct png_struct_def -{ -#ifdef PNG_SETJMP_SUPPORTED - jmp_buf jmp_buf_local; /* New name in 1.6.0 for jmp_buf in png_struct */ - png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */ - jmp_buf *jmp_buf_ptr; /* passed to longjmp_fn */ - size_t jmp_buf_size; /* size of the above, if allocated */ -#endif - png_error_ptr error_fn; /* function for printing errors and aborting */ -#ifdef PNG_WARNINGS_SUPPORTED - png_error_ptr warning_fn; /* function for printing warnings */ -#endif - png_voidp error_ptr; /* user supplied struct for error functions */ - png_rw_ptr write_data_fn; /* function for writing output data */ - png_rw_ptr read_data_fn; /* function for reading input data */ - png_voidp io_ptr; /* ptr to application struct for I/O functions */ - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - png_user_transform_ptr read_user_transform_fn; /* user read transform */ -#endif - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED - png_user_transform_ptr write_user_transform_fn; /* user write transform */ -#endif - -/* These were added in libpng-1.0.2 */ -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) - png_voidp user_transform_ptr; /* user supplied struct for user transform */ - png_byte user_transform_depth; /* bit depth of user transformed pixels */ - png_byte user_transform_channels; /* channels in user transformed pixels */ -#endif -#endif - - png_uint_32 mode; /* tells us where we are in the PNG file */ - png_uint_32 flags; /* flags indicating various things to libpng */ - png_uint_32 transformations; /* which transformations to perform */ - - png_uint_32 zowner; /* ID (chunk type) of zstream owner, 0 if none */ - z_stream zstream; /* decompression structure */ - -#ifdef PNG_WRITE_SUPPORTED - png_compression_bufferp zbuffer_list; /* Created on demand during write */ - uInt zbuffer_size; /* size of the actual buffer */ - - int zlib_level; /* holds zlib compression level */ - int zlib_method; /* holds zlib compression method */ - int zlib_window_bits; /* holds zlib compression window bits */ - int zlib_mem_level; /* holds zlib compression memory level */ - int zlib_strategy; /* holds zlib compression strategy */ -#endif -/* Added at libpng 1.5.4 */ -#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED - int zlib_text_level; /* holds zlib compression level */ - int zlib_text_method; /* holds zlib compression method */ - int zlib_text_window_bits; /* holds zlib compression window bits */ - int zlib_text_mem_level; /* holds zlib compression memory level */ - int zlib_text_strategy; /* holds zlib compression strategy */ -#endif -/* End of material added at libpng 1.5.4 */ -/* Added at libpng 1.6.0 */ -#ifdef PNG_WRITE_SUPPORTED - int zlib_set_level; /* Actual values set into the zstream on write */ - int zlib_set_method; - int zlib_set_window_bits; - int zlib_set_mem_level; - int zlib_set_strategy; -#endif - - png_uint_32 width; /* width of image in pixels */ - png_uint_32 height; /* height of image in pixels */ - png_uint_32 num_rows; /* number of rows in current pass */ - png_uint_32 usr_width; /* width of row at start of write */ - png_size_t rowbytes; /* size of row in bytes */ - png_uint_32 iwidth; /* width of current interlaced row in pixels */ - png_uint_32 row_number; /* current row in interlace pass */ - png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */ - png_bytep prev_row; /* buffer to save previous (unfiltered) row. - * While reading this is a pointer into - * big_prev_row; while writing it is separately - * allocated if needed. - */ - png_bytep row_buf; /* buffer to save current (unfiltered) row. - * While reading, this is a pointer into - * big_row_buf; while writing it is separately - * allocated. - */ -#ifdef PNG_WRITE_FILTER_SUPPORTED - png_bytep try_row; /* buffer to save trial row when filtering */ - png_bytep tst_row; /* buffer to save best trial row when filtering */ -#endif - png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */ - - png_uint_32 idat_size; /* current IDAT size for read */ - png_uint_32 crc; /* current chunk CRC value */ - png_colorp palette; /* palette from the input file */ - png_uint_16 num_palette; /* number of color entries in palette */ - -/* Added at libpng-1.5.10 */ -#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED - int num_palette_max; /* maximum palette index found in IDAT */ -#endif - - png_uint_16 num_trans; /* number of transparency values */ - png_byte compression; /* file compression type (always 0) */ - png_byte filter; /* file filter type (always 0) */ - png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ - png_byte pass; /* current interlace pass (0 - 6) */ - png_byte do_filter; /* row filter flags (see PNG_FILTER_ in png.h ) */ - png_byte color_type; /* color type of file */ - png_byte bit_depth; /* bit depth of file */ - png_byte usr_bit_depth; /* bit depth of users row: write only */ - png_byte pixel_depth; /* number of bits per pixel */ - png_byte channels; /* number of channels in file */ -#ifdef PNG_WRITE_SUPPORTED - png_byte usr_channels; /* channels at start of write: write only */ -#endif - png_byte sig_bytes; /* magic bytes read/written from start of file */ - png_byte maximum_pixel_depth; - /* pixel depth used for the row buffers */ - png_byte transformed_pixel_depth; - /* pixel depth after read/write transforms */ -#if ZLIB_VERNUM >= 0x1240 - png_byte zstream_start; /* at start of an input zlib stream */ -#endif /* Zlib >= 1.2.4 */ -#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) - png_uint_16 filler; /* filler bytes for pixel expansion */ -#endif - -#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) ||\ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) - png_byte background_gamma_type; - png_fixed_point background_gamma; - png_color_16 background; /* background color in screen gamma space */ -#ifdef PNG_READ_GAMMA_SUPPORTED - png_color_16 background_1; /* background normalized to gamma 1.0 */ -#endif -#endif /* bKGD */ - -#ifdef PNG_WRITE_FLUSH_SUPPORTED - png_flush_ptr output_flush_fn; /* Function for flushing output */ - png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */ - png_uint_32 flush_rows; /* number of rows written since last flush */ -#endif - -#ifdef PNG_READ_GAMMA_SUPPORTED - int gamma_shift; /* number of "insignificant" bits in 16-bit gamma */ - png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */ - - png_bytep gamma_table; /* gamma table for 8-bit depth files */ - png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */ -#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \ - defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \ - defined(PNG_READ_RGB_TO_GRAY_SUPPORTED) - png_bytep gamma_from_1; /* converts from 1.0 to screen */ - png_bytep gamma_to_1; /* converts from file to 1.0 */ - png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */ - png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */ -#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */ -#endif - -#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED) - png_color_8 sig_bit; /* significant bits in each available channel */ -#endif - -#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) - png_color_8 shift; /* shift for significant bit tranformation */ -#endif - -#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \ - || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) - png_bytep trans_alpha; /* alpha values for paletted files */ - png_color_16 trans_color; /* transparent color for non-paletted files */ -#endif - - png_read_status_ptr read_row_fn; /* called after each row is decoded */ - png_write_status_ptr write_row_fn; /* called after each row is encoded */ -#ifdef PNG_PROGRESSIVE_READ_SUPPORTED - png_progressive_info_ptr info_fn; /* called after header data fully read */ - png_progressive_row_ptr row_fn; /* called after a prog. row is decoded */ - png_progressive_end_ptr end_fn; /* called after image is complete */ - png_bytep save_buffer_ptr; /* current location in save_buffer */ - png_bytep save_buffer; /* buffer for previously read data */ - png_bytep current_buffer_ptr; /* current location in current_buffer */ - png_bytep current_buffer; /* buffer for recently used data */ - png_uint_32 push_length; /* size of current input chunk */ - png_uint_32 skip_length; /* bytes to skip in input data */ - png_size_t save_buffer_size; /* amount of data now in save_buffer */ - png_size_t save_buffer_max; /* total size of save_buffer */ - png_size_t buffer_size; /* total amount of available input data */ - png_size_t current_buffer_size; /* amount of data now in current_buffer */ - int process_mode; /* what push library is currently doing */ - int cur_palette; /* current push library palette index */ - -#endif /* PROGRESSIVE_READ */ - -#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) -/* For the Borland special 64K segment handler */ - png_bytepp offset_table_ptr; - png_bytep offset_table; - png_uint_16 offset_table_number; - png_uint_16 offset_table_count; - png_uint_16 offset_table_count_free; -#endif - -#ifdef PNG_READ_QUANTIZE_SUPPORTED - png_bytep palette_lookup; /* lookup table for quantizing */ - png_bytep quantize_index; /* index translation for palette files */ -#endif - -/* Options */ -#ifdef PNG_SET_OPTION_SUPPORTED - png_uint_32 options; /* On/off state (up to 16 options) */ -#endif - -#if PNG_LIBPNG_VER < 10700 -/* To do: remove this from libpng-1.7 */ -#ifdef PNG_TIME_RFC1123_SUPPORTED - char time_buffer[29]; /* String to hold RFC 1123 time text */ -#endif -#endif - -/* New members added in libpng-1.0.6 */ - - png_uint_32 free_me; /* flags items libpng is responsible for freeing */ - -#ifdef PNG_USER_CHUNKS_SUPPORTED - png_voidp user_chunk_ptr; -#ifdef PNG_READ_USER_CHUNKS_SUPPORTED - png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */ -#endif -#endif - -#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED - int unknown_default; /* As PNG_HANDLE_* */ - unsigned int num_chunk_list; /* Number of entries in the list */ - png_bytep chunk_list; /* List of png_byte[5]; the textual chunk name - * followed by a PNG_HANDLE_* byte */ -#endif - -/* New members added in libpng-1.0.3 */ -#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED - png_byte rgb_to_gray_status; - /* Added in libpng 1.5.5 to record setting of coefficients: */ - png_byte rgb_to_gray_coefficients_set; - /* These were changed from png_byte in libpng-1.0.6 */ - png_uint_16 rgb_to_gray_red_coeff; - png_uint_16 rgb_to_gray_green_coeff; - /* deleted in 1.5.5: rgb_to_gray_blue_coeff; */ -#endif - -/* New member added in libpng-1.0.4 (renamed in 1.0.9) */ -#if defined(PNG_MNG_FEATURES_SUPPORTED) -/* Changed from png_byte to png_uint_32 at version 1.2.0 */ - png_uint_32 mng_features_permitted; -#endif - -/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */ -#ifdef PNG_MNG_FEATURES_SUPPORTED - png_byte filter_type; -#endif - -/* New members added in libpng-1.2.0 */ - -/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */ -#ifdef PNG_USER_MEM_SUPPORTED - png_voidp mem_ptr; /* user supplied struct for mem functions */ - png_malloc_ptr malloc_fn; /* function for allocating memory */ - png_free_ptr free_fn; /* function for freeing memory */ -#endif - -/* New member added in libpng-1.0.13 and 1.2.0 */ - png_bytep big_row_buf; /* buffer to save current (unfiltered) row */ - -#ifdef PNG_READ_QUANTIZE_SUPPORTED -/* The following three members were added at version 1.0.14 and 1.2.4 */ - png_bytep quantize_sort; /* working sort array */ - png_bytep index_to_palette; /* where the original index currently is - in the palette */ - png_bytep palette_to_index; /* which original index points to this - palette color */ -#endif - -/* New members added in libpng-1.0.16 and 1.2.6 */ - png_byte compression_type; - -#ifdef PNG_USER_LIMITS_SUPPORTED - png_uint_32 user_width_max; - png_uint_32 user_height_max; - - /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown - * chunks that can be stored (0 means unlimited). - */ - png_uint_32 user_chunk_cache_max; - - /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk - * can occupy when decompressed. 0 means unlimited. - */ - png_alloc_size_t user_chunk_malloc_max; -#endif - -/* New member added in libpng-1.0.25 and 1.2.17 */ -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED - /* Temporary storage for unknown chunk that the library doesn't recognize, - * used while reading the chunk. - */ - png_unknown_chunk unknown_chunk; -#endif - -/* New member added in libpng-1.2.26 */ - png_size_t old_big_row_buf_size; - -#ifdef PNG_READ_SUPPORTED -/* New member added in libpng-1.2.30 */ - png_bytep read_buffer; /* buffer for reading chunk data */ - png_alloc_size_t read_buffer_size; /* current size of the buffer */ -#endif -#ifdef PNG_SEQUENTIAL_READ_SUPPORTED - uInt IDAT_read_size; /* limit on read buffer size for IDAT */ -#endif - -#ifdef PNG_IO_STATE_SUPPORTED -/* New member added in libpng-1.4.0 */ - png_uint_32 io_state; -#endif - -/* New member added in libpng-1.5.6 */ - png_bytep big_prev_row; - -/* New member added in libpng-1.5.7 */ - void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info, - png_bytep row, png_const_bytep prev_row); - -#ifdef PNG_READ_SUPPORTED -#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED) - png_colorspace colorspace; -#endif -#endif -}; -#endif /* PNGSTRUCT_H */ diff --git a/project/jni/png/pngtrans.c b/project/jni/png/pngtrans.c deleted file mode 100644 index 6882f0fd7..000000000 --- a/project/jni/png/pngtrans.c +++ /dev/null @@ -1,864 +0,0 @@ - -/* pngtrans.c - transforms the data in a row (used by both readers and writers) - * - * Last changed in libpng 1.6.33 [September 28, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#include "pngpriv.h" - -#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) - -#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* Turn on BGR-to-RGB mapping */ -void PNGAPI -png_set_bgr(png_structrp png_ptr) -{ - png_debug(1, "in png_set_bgr"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_BGR; -} -#endif - -#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* Turn on 16-bit byte swapping */ -void PNGAPI -png_set_swap(png_structrp png_ptr) -{ - png_debug(1, "in png_set_swap"); - - if (png_ptr == NULL) - return; - - if (png_ptr->bit_depth == 16) - png_ptr->transformations |= PNG_SWAP_BYTES; -} -#endif - -#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) -/* Turn on pixel packing */ -void PNGAPI -png_set_packing(png_structrp png_ptr) -{ - png_debug(1, "in png_set_packing"); - - if (png_ptr == NULL) - return; - - if (png_ptr->bit_depth < 8) - { - png_ptr->transformations |= PNG_PACK; -# ifdef PNG_WRITE_SUPPORTED - png_ptr->usr_bit_depth = 8; -# endif - } -} -#endif - -#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED) -/* Turn on packed pixel swapping */ -void PNGAPI -png_set_packswap(png_structrp png_ptr) -{ - png_debug(1, "in png_set_packswap"); - - if (png_ptr == NULL) - return; - - if (png_ptr->bit_depth < 8) - png_ptr->transformations |= PNG_PACKSWAP; -} -#endif - -#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) -void PNGAPI -png_set_shift(png_structrp png_ptr, png_const_color_8p true_bits) -{ - png_debug(1, "in png_set_shift"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_SHIFT; - png_ptr->shift = *true_bits; -} -#endif - -#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ - defined(PNG_WRITE_INTERLACING_SUPPORTED) -int PNGAPI -png_set_interlace_handling(png_structrp png_ptr) -{ - png_debug(1, "in png_set_interlace handling"); - - if (png_ptr != 0 && png_ptr->interlaced != 0) - { - png_ptr->transformations |= PNG_INTERLACE; - return (7); - } - - return (1); -} -#endif - -#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) -/* Add a filler byte on read, or remove a filler or alpha byte on write. - * The filler type has changed in v0.95 to allow future 2-byte fillers - * for 48-bit input data, as well as to avoid problems with some compilers - * that don't like bytes as parameters. - */ -void PNGAPI -png_set_filler(png_structrp png_ptr, png_uint_32 filler, int filler_loc) -{ - png_debug(1, "in png_set_filler"); - - if (png_ptr == NULL) - return; - - /* In libpng 1.6 it is possible to determine whether this is a read or write - * operation and therefore to do more checking here for a valid call. - */ - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0) - { -# ifdef PNG_READ_FILLER_SUPPORTED - /* On read png_set_filler is always valid, regardless of the base PNG - * format, because other transformations can give a format where the - * filler code can execute (basically an 8 or 16-bit component RGB or G - * format.) - * - * NOTE: usr_channels is not used by the read code! (This has led to - * confusion in the past.) The filler is only used in the read code. - */ - png_ptr->filler = (png_uint_16)filler; -# else - png_app_error(png_ptr, "png_set_filler not supported on read"); - PNG_UNUSED(filler) /* not used in the write case */ - return; -# endif - } - - else /* write */ - { -# ifdef PNG_WRITE_FILLER_SUPPORTED - /* On write the usr_channels parameter must be set correctly at the - * start to record the number of channels in the app-supplied data. - */ - switch (png_ptr->color_type) - { - case PNG_COLOR_TYPE_RGB: - png_ptr->usr_channels = 4; - break; - - case PNG_COLOR_TYPE_GRAY: - if (png_ptr->bit_depth >= 8) - { - png_ptr->usr_channels = 2; - break; - } - - else - { - /* There simply isn't any code in libpng to strip out bits - * from bytes when the components are less than a byte in - * size! - */ - png_app_error(png_ptr, - "png_set_filler is invalid for" - " low bit depth gray output"); - return; - } - - default: - png_app_error(png_ptr, - "png_set_filler: inappropriate color type"); - return; - } -# else - png_app_error(png_ptr, "png_set_filler not supported on write"); - return; -# endif - } - - /* Here on success - libpng supports the operation, set the transformation - * and the flag to say where the filler channel is. - */ - png_ptr->transformations |= PNG_FILLER; - - if (filler_loc == PNG_FILLER_AFTER) - png_ptr->flags |= PNG_FLAG_FILLER_AFTER; - - else - png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER; -} - -/* Added to libpng-1.2.7 */ -void PNGAPI -png_set_add_alpha(png_structrp png_ptr, png_uint_32 filler, int filler_loc) -{ - png_debug(1, "in png_set_add_alpha"); - - if (png_ptr == NULL) - return; - - png_set_filler(png_ptr, filler, filler_loc); - /* The above may fail to do anything. */ - if ((png_ptr->transformations & PNG_FILLER) != 0) - png_ptr->transformations |= PNG_ADD_ALPHA; -} - -#endif - -#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ - defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) -void PNGAPI -png_set_swap_alpha(png_structrp png_ptr) -{ - png_debug(1, "in png_set_swap_alpha"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_SWAP_ALPHA; -} -#endif - -#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ - defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) -void PNGAPI -png_set_invert_alpha(png_structrp png_ptr) -{ - png_debug(1, "in png_set_invert_alpha"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_INVERT_ALPHA; -} -#endif - -#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) -void PNGAPI -png_set_invert_mono(png_structrp png_ptr) -{ - png_debug(1, "in png_set_invert_mono"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_INVERT_MONO; -} - -/* Invert monochrome grayscale data */ -void /* PRIVATE */ -png_do_invert(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_invert"); - - /* This test removed from libpng version 1.0.13 and 1.2.0: - * if (row_info->bit_depth == 1 && - */ - if (row_info->color_type == PNG_COLOR_TYPE_GRAY) - { - png_bytep rp = row; - png_size_t i; - png_size_t istop = row_info->rowbytes; - - for (i = 0; i < istop; i++) - { - *rp = (png_byte)(~(*rp)); - rp++; - } - } - - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA && - row_info->bit_depth == 8) - { - png_bytep rp = row; - png_size_t i; - png_size_t istop = row_info->rowbytes; - - for (i = 0; i < istop; i += 2) - { - *rp = (png_byte)(~(*rp)); - rp += 2; - } - } - -#ifdef PNG_16BIT_SUPPORTED - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA && - row_info->bit_depth == 16) - { - png_bytep rp = row; - png_size_t i; - png_size_t istop = row_info->rowbytes; - - for (i = 0; i < istop; i += 4) - { - *rp = (png_byte)(~(*rp)); - *(rp + 1) = (png_byte)(~(*(rp + 1))); - rp += 4; - } - } -#endif -} -#endif - -#ifdef PNG_16BIT_SUPPORTED -#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) -/* Swaps byte order on 16-bit depth images */ -void /* PRIVATE */ -png_do_swap(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_swap"); - - if (row_info->bit_depth == 16) - { - png_bytep rp = row; - png_uint_32 i; - png_uint_32 istop= row_info->width * row_info->channels; - - for (i = 0; i < istop; i++, rp += 2) - { -#ifdef PNG_BUILTIN_BSWAP16_SUPPORTED - /* Feature added to libpng-1.6.11 for testing purposes, not - * enabled by default. - */ - *(png_uint_16*)rp = __builtin_bswap16(*(png_uint_16*)rp); -#else - png_byte t = *rp; - *rp = *(rp + 1); - *(rp + 1) = t; -#endif - } - } -} -#endif -#endif - -#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED) -static PNG_CONST png_byte onebppswaptable[256] = { - 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0, - 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0, - 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8, - 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8, - 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4, - 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4, - 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC, - 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC, - 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2, - 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2, - 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA, - 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA, - 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6, - 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6, - 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE, - 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE, - 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1, - 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1, - 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9, - 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9, - 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5, - 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5, - 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED, - 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD, - 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3, - 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3, - 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB, - 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB, - 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7, - 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7, - 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF, - 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF -}; - -static PNG_CONST png_byte twobppswaptable[256] = { - 0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0, - 0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0, - 0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4, - 0x24, 0x64, 0xA4, 0xE4, 0x34, 0x74, 0xB4, 0xF4, - 0x08, 0x48, 0x88, 0xC8, 0x18, 0x58, 0x98, 0xD8, - 0x28, 0x68, 0xA8, 0xE8, 0x38, 0x78, 0xB8, 0xF8, - 0x0C, 0x4C, 0x8C, 0xCC, 0x1C, 0x5C, 0x9C, 0xDC, - 0x2C, 0x6C, 0xAC, 0xEC, 0x3C, 0x7C, 0xBC, 0xFC, - 0x01, 0x41, 0x81, 0xC1, 0x11, 0x51, 0x91, 0xD1, - 0x21, 0x61, 0xA1, 0xE1, 0x31, 0x71, 0xB1, 0xF1, - 0x05, 0x45, 0x85, 0xC5, 0x15, 0x55, 0x95, 0xD5, - 0x25, 0x65, 0xA5, 0xE5, 0x35, 0x75, 0xB5, 0xF5, - 0x09, 0x49, 0x89, 0xC9, 0x19, 0x59, 0x99, 0xD9, - 0x29, 0x69, 0xA9, 0xE9, 0x39, 0x79, 0xB9, 0xF9, - 0x0D, 0x4D, 0x8D, 0xCD, 0x1D, 0x5D, 0x9D, 0xDD, - 0x2D, 0x6D, 0xAD, 0xED, 0x3D, 0x7D, 0xBD, 0xFD, - 0x02, 0x42, 0x82, 0xC2, 0x12, 0x52, 0x92, 0xD2, - 0x22, 0x62, 0xA2, 0xE2, 0x32, 0x72, 0xB2, 0xF2, - 0x06, 0x46, 0x86, 0xC6, 0x16, 0x56, 0x96, 0xD6, - 0x26, 0x66, 0xA6, 0xE6, 0x36, 0x76, 0xB6, 0xF6, - 0x0A, 0x4A, 0x8A, 0xCA, 0x1A, 0x5A, 0x9A, 0xDA, - 0x2A, 0x6A, 0xAA, 0xEA, 0x3A, 0x7A, 0xBA, 0xFA, - 0x0E, 0x4E, 0x8E, 0xCE, 0x1E, 0x5E, 0x9E, 0xDE, - 0x2E, 0x6E, 0xAE, 0xEE, 0x3E, 0x7E, 0xBE, 0xFE, - 0x03, 0x43, 0x83, 0xC3, 0x13, 0x53, 0x93, 0xD3, - 0x23, 0x63, 0xA3, 0xE3, 0x33, 0x73, 0xB3, 0xF3, - 0x07, 0x47, 0x87, 0xC7, 0x17, 0x57, 0x97, 0xD7, - 0x27, 0x67, 0xA7, 0xE7, 0x37, 0x77, 0xB7, 0xF7, - 0x0B, 0x4B, 0x8B, 0xCB, 0x1B, 0x5B, 0x9B, 0xDB, - 0x2B, 0x6B, 0xAB, 0xEB, 0x3B, 0x7B, 0xBB, 0xFB, - 0x0F, 0x4F, 0x8F, 0xCF, 0x1F, 0x5F, 0x9F, 0xDF, - 0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF -}; - -static PNG_CONST png_byte fourbppswaptable[256] = { - 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, - 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0, - 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71, - 0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1, 0xE1, 0xF1, - 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72, - 0x82, 0x92, 0xA2, 0xB2, 0xC2, 0xD2, 0xE2, 0xF2, - 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73, - 0x83, 0x93, 0xA3, 0xB3, 0xC3, 0xD3, 0xE3, 0xF3, - 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74, - 0x84, 0x94, 0xA4, 0xB4, 0xC4, 0xD4, 0xE4, 0xF4, - 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75, - 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5, - 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76, - 0x86, 0x96, 0xA6, 0xB6, 0xC6, 0xD6, 0xE6, 0xF6, - 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77, - 0x87, 0x97, 0xA7, 0xB7, 0xC7, 0xD7, 0xE7, 0xF7, - 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78, - 0x88, 0x98, 0xA8, 0xB8, 0xC8, 0xD8, 0xE8, 0xF8, - 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79, - 0x89, 0x99, 0xA9, 0xB9, 0xC9, 0xD9, 0xE9, 0xF9, - 0x0A, 0x1A, 0x2A, 0x3A, 0x4A, 0x5A, 0x6A, 0x7A, - 0x8A, 0x9A, 0xAA, 0xBA, 0xCA, 0xDA, 0xEA, 0xFA, - 0x0B, 0x1B, 0x2B, 0x3B, 0x4B, 0x5B, 0x6B, 0x7B, - 0x8B, 0x9B, 0xAB, 0xBB, 0xCB, 0xDB, 0xEB, 0xFB, - 0x0C, 0x1C, 0x2C, 0x3C, 0x4C, 0x5C, 0x6C, 0x7C, - 0x8C, 0x9C, 0xAC, 0xBC, 0xCC, 0xDC, 0xEC, 0xFC, - 0x0D, 0x1D, 0x2D, 0x3D, 0x4D, 0x5D, 0x6D, 0x7D, - 0x8D, 0x9D, 0xAD, 0xBD, 0xCD, 0xDD, 0xED, 0xFD, - 0x0E, 0x1E, 0x2E, 0x3E, 0x4E, 0x5E, 0x6E, 0x7E, - 0x8E, 0x9E, 0xAE, 0xBE, 0xCE, 0xDE, 0xEE, 0xFE, - 0x0F, 0x1F, 0x2F, 0x3F, 0x4F, 0x5F, 0x6F, 0x7F, - 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF -}; - -/* Swaps pixel packing order within bytes */ -void /* PRIVATE */ -png_do_packswap(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_packswap"); - - if (row_info->bit_depth < 8) - { - png_bytep rp; - png_const_bytep end, table; - - end = row + row_info->rowbytes; - - if (row_info->bit_depth == 1) - table = onebppswaptable; - - else if (row_info->bit_depth == 2) - table = twobppswaptable; - - else if (row_info->bit_depth == 4) - table = fourbppswaptable; - - else - return; - - for (rp = row; rp < end; rp++) - *rp = table[*rp]; - } -} -#endif /* PACKSWAP || WRITE_PACKSWAP */ - -#if defined(PNG_WRITE_FILLER_SUPPORTED) || \ - defined(PNG_READ_STRIP_ALPHA_SUPPORTED) -/* Remove a channel - this used to be 'png_do_strip_filler' but it used a - * somewhat weird combination of flags to determine what to do. All the calls - * to png_do_strip_filler are changed in 1.5.2 to call this instead with the - * correct arguments. - * - * The routine isn't general - the channel must be the channel at the start or - * end (not in the middle) of each pixel. - */ -void /* PRIVATE */ -png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start) -{ - png_bytep sp = row; /* source pointer */ - png_bytep dp = row; /* destination pointer */ - png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */ - - /* At the start sp will point to the first byte to copy and dp to where - * it is copied to. ep always points just beyond the end of the row, so - * the loop simply copies (channels-1) channels until sp reaches ep. - * - * at_start: 0 -- convert AG, XG, ARGB, XRGB, AAGG, XXGG, etc. - * nonzero -- convert GA, GX, RGBA, RGBX, GGAA, RRGGBBXX, etc. - */ - - /* GA, GX, XG cases */ - if (row_info->channels == 2) - { - if (row_info->bit_depth == 8) - { - if (at_start != 0) /* Skip initial filler */ - ++sp; - else /* Skip initial channel and, for sp, the filler */ - { - sp += 2; ++dp; - } - - /* For a 1 pixel wide image there is nothing to do */ - while (sp < ep) - { - *dp++ = *sp; sp += 2; - } - - row_info->pixel_depth = 8; - } - - else if (row_info->bit_depth == 16) - { - if (at_start != 0) /* Skip initial filler */ - sp += 2; - else /* Skip initial channel and, for sp, the filler */ - { - sp += 4; dp += 2; - } - - while (sp < ep) - { - *dp++ = *sp++; *dp++ = *sp; sp += 3; - } - - row_info->pixel_depth = 16; - } - - else - return; /* bad bit depth */ - - row_info->channels = 1; - - /* Finally fix the color type if it records an alpha channel */ - if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - row_info->color_type = PNG_COLOR_TYPE_GRAY; - } - - /* RGBA, RGBX, XRGB cases */ - else if (row_info->channels == 4) - { - if (row_info->bit_depth == 8) - { - if (at_start != 0) /* Skip initial filler */ - ++sp; - else /* Skip initial channels and, for sp, the filler */ - { - sp += 4; dp += 3; - } - - /* Note that the loop adds 3 to dp and 4 to sp each time. */ - while (sp < ep) - { - *dp++ = *sp++; *dp++ = *sp++; *dp++ = *sp; sp += 2; - } - - row_info->pixel_depth = 24; - } - - else if (row_info->bit_depth == 16) - { - if (at_start != 0) /* Skip initial filler */ - sp += 2; - else /* Skip initial channels and, for sp, the filler */ - { - sp += 8; dp += 6; - } - - while (sp < ep) - { - /* Copy 6 bytes, skip 2 */ - *dp++ = *sp++; *dp++ = *sp++; - *dp++ = *sp++; *dp++ = *sp++; - *dp++ = *sp++; *dp++ = *sp; sp += 3; - } - - row_info->pixel_depth = 48; - } - - else - return; /* bad bit depth */ - - row_info->channels = 3; - - /* Finally fix the color type if it records an alpha channel */ - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - row_info->color_type = PNG_COLOR_TYPE_RGB; - } - - else - return; /* The filler channel has gone already */ - - /* Fix the rowbytes value. */ - row_info->rowbytes = (png_size_t)(dp-row); -} -#endif - -#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) -/* Swaps red and blue bytes within a pixel */ -void /* PRIVATE */ -png_do_bgr(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_bgr"); - - if ((row_info->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - png_uint_32 row_width = row_info->width; - if (row_info->bit_depth == 8) - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 3) - { - png_byte save = *rp; - *rp = *(rp + 2); - *(rp + 2) = save; - } - } - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 4) - { - png_byte save = *rp; - *rp = *(rp + 2); - *(rp + 2) = save; - } - } - } - -#ifdef PNG_16BIT_SUPPORTED - else if (row_info->bit_depth == 16) - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 6) - { - png_byte save = *rp; - *rp = *(rp + 4); - *(rp + 4) = save; - save = *(rp + 1); - *(rp + 1) = *(rp + 5); - *(rp + 5) = save; - } - } - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - png_bytep rp; - png_uint_32 i; - - for (i = 0, rp = row; i < row_width; i++, rp += 8) - { - png_byte save = *rp; - *rp = *(rp + 4); - *(rp + 4) = save; - save = *(rp + 1); - *(rp + 1) = *(rp + 5); - *(rp + 5) = save; - } - } - } -#endif - } -} -#endif /* READ_BGR || WRITE_BGR */ - -#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \ - defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED) -/* Added at libpng-1.5.10 */ -void /* PRIVATE */ -png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info) -{ - if (png_ptr->num_palette < (1 << row_info->bit_depth) && - png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */ - { - /* Calculations moved outside switch in an attempt to stop different - * compiler warnings. 'padding' is in *bits* within the last byte, it is - * an 'int' because pixel_depth becomes an 'int' in the expression below, - * and this calculation is used because it avoids warnings that other - * forms produced on either GCC or MSVC. - */ - int padding = PNG_PADBITS(row_info->pixel_depth, row_info->width); - png_bytep rp = png_ptr->row_buf + row_info->rowbytes - 1; - - switch (row_info->bit_depth) - { - case 1: - { - /* in this case, all bytes must be 0 so we don't need - * to unpack the pixels except for the rightmost one. - */ - for (; rp > png_ptr->row_buf; rp--) - { - if ((*rp >> padding) != 0) - png_ptr->num_palette_max = 1; - padding = 0; - } - - break; - } - - case 2: - { - for (; rp > png_ptr->row_buf; rp--) - { - int i = ((*rp >> padding) & 0x03); - - if (i > png_ptr->num_palette_max) - png_ptr->num_palette_max = i; - - i = (((*rp >> padding) >> 2) & 0x03); - - if (i > png_ptr->num_palette_max) - png_ptr->num_palette_max = i; - - i = (((*rp >> padding) >> 4) & 0x03); - - if (i > png_ptr->num_palette_max) - png_ptr->num_palette_max = i; - - i = (((*rp >> padding) >> 6) & 0x03); - - if (i > png_ptr->num_palette_max) - png_ptr->num_palette_max = i; - - padding = 0; - } - - break; - } - - case 4: - { - for (; rp > png_ptr->row_buf; rp--) - { - int i = ((*rp >> padding) & 0x0f); - - if (i > png_ptr->num_palette_max) - png_ptr->num_palette_max = i; - - i = (((*rp >> padding) >> 4) & 0x0f); - - if (i > png_ptr->num_palette_max) - png_ptr->num_palette_max = i; - - padding = 0; - } - - break; - } - - case 8: - { - for (; rp > png_ptr->row_buf; rp--) - { - if (*rp > png_ptr->num_palette_max) - png_ptr->num_palette_max = (int) *rp; - } - - break; - } - - default: - break; - } - } -} -#endif /* CHECK_FOR_INVALID_INDEX */ - -#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ - defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED -void PNGAPI -png_set_user_transform_info(png_structrp png_ptr, png_voidp - user_transform_ptr, int user_transform_depth, int user_transform_channels) -{ - png_debug(1, "in png_set_user_transform_info"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED - if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 && - (png_ptr->flags & PNG_FLAG_ROW_INIT) != 0) - { - png_app_error(png_ptr, - "info change after png_start_read_image or png_read_update_info"); - return; - } -#endif - - png_ptr->user_transform_ptr = user_transform_ptr; - png_ptr->user_transform_depth = (png_byte)user_transform_depth; - png_ptr->user_transform_channels = (png_byte)user_transform_channels; -} -#endif - -/* This function returns a pointer to the user_transform_ptr associated with - * the user transform functions. The application should free any memory - * associated with this pointer before png_write_destroy and png_read_destroy - * are called. - */ -#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED -png_voidp PNGAPI -png_get_user_transform_ptr(png_const_structrp png_ptr) -{ - if (png_ptr == NULL) - return (NULL); - - return png_ptr->user_transform_ptr; -} -#endif - -#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED -png_uint_32 PNGAPI -png_get_current_row_number(png_const_structrp png_ptr) -{ - /* See the comments in png.h - this is the sub-image row when reading an - * interlaced image. - */ - if (png_ptr != NULL) - return png_ptr->row_number; - - return PNG_UINT_32_MAX; /* help the app not to fail silently */ -} - -png_byte PNGAPI -png_get_current_pass_number(png_const_structrp png_ptr) -{ - if (png_ptr != NULL) - return png_ptr->pass; - return 8; /* invalid */ -} -#endif /* USER_TRANSFORM_INFO */ -#endif /* READ_USER_TRANSFORM || WRITE_USER_TRANSFORM */ -#endif /* READ || WRITE */ diff --git a/project/jni/png/pngwio.c b/project/jni/png/pngwio.c deleted file mode 100644 index 37c7c3a7f..000000000 --- a/project/jni/png/pngwio.c +++ /dev/null @@ -1,168 +0,0 @@ - -/* pngwio.c - functions for data output - * - * Last changed in libpng 1.6.24 [August 4, 2016] - * Copyright (c) 1998-2002,2004,2006-2014,2016 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - * - * This file provides a location for all output. Users who need - * special handling are expected to write functions that have the same - * arguments as these and perform similar functions, but that possibly - * use different output methods. Note that you shouldn't change these - * functions, but rather write replacement functions and then change - * them at run time with png_set_write_fn(...). - */ - -#include "pngpriv.h" - -#ifdef PNG_WRITE_SUPPORTED - -/* Write the data to whatever output you are using. The default routine - * writes to a file pointer. Note that this routine sometimes gets called - * with very small lengths, so you should implement some kind of simple - * buffering if you are using unbuffered writes. This should never be asked - * to write more than 64K on a 16-bit machine. - */ - -void /* PRIVATE */ -png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length) -{ - /* NOTE: write_data_fn must not change the buffer! */ - if (png_ptr->write_data_fn != NULL ) - (*(png_ptr->write_data_fn))(png_ptr, png_constcast(png_bytep,data), - length); - - else - png_error(png_ptr, "Call to NULL write function"); -} - -#ifdef PNG_STDIO_SUPPORTED -/* This is the function that does the actual writing of data. If you are - * not writing to a standard C stream, you should create a replacement - * write_data function and use it at run time with png_set_write_fn(), rather - * than changing the library. - */ -void PNGCBAPI -png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_size_t check; - - if (png_ptr == NULL) - return; - - check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr)); - - if (check != length) - png_error(png_ptr, "Write Error"); -} -#endif - -/* This function is called to output any data pending writing (normally - * to disk). After png_flush is called, there should be no data pending - * writing in any buffers. - */ -#ifdef PNG_WRITE_FLUSH_SUPPORTED -void /* PRIVATE */ -png_flush(png_structrp png_ptr) -{ - if (png_ptr->output_flush_fn != NULL) - (*(png_ptr->output_flush_fn))(png_ptr); -} - -# ifdef PNG_STDIO_SUPPORTED -void PNGCBAPI -png_default_flush(png_structp png_ptr) -{ - png_FILE_p io_ptr; - - if (png_ptr == NULL) - return; - - io_ptr = png_voidcast(png_FILE_p, (png_ptr->io_ptr)); - fflush(io_ptr); -} -# endif -#endif - -/* This function allows the application to supply new output functions for - * libpng if standard C streams aren't being used. - * - * This function takes as its arguments: - * png_ptr - pointer to a png output data structure - * io_ptr - pointer to user supplied structure containing info about - * the output functions. May be NULL. - * write_data_fn - pointer to a new output function that takes as its - * arguments a pointer to a png_struct, a pointer to - * data to be written, and a 32-bit unsigned int that is - * the number of bytes to be written. The new write - * function should call png_error(png_ptr, "Error msg") - * to exit and output any fatal error messages. May be - * NULL, in which case libpng's default function will - * be used. - * flush_data_fn - pointer to a new flush function that takes as its - * arguments a pointer to a png_struct. After a call to - * the flush function, there should be no data in any buffers - * or pending transmission. If the output method doesn't do - * any buffering of output, a function prototype must still be - * supplied although it doesn't have to do anything. If - * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile - * time, output_flush_fn will be ignored, although it must be - * supplied for compatibility. May be NULL, in which case - * libpng's default function will be used, if - * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not - * a good idea if io_ptr does not point to a standard - * *FILE structure. - */ -void PNGAPI -png_set_write_fn(png_structrp png_ptr, png_voidp io_ptr, - png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->io_ptr = io_ptr; - -#ifdef PNG_STDIO_SUPPORTED - if (write_data_fn != NULL) - png_ptr->write_data_fn = write_data_fn; - - else - png_ptr->write_data_fn = png_default_write_data; -#else - png_ptr->write_data_fn = write_data_fn; -#endif - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -# ifdef PNG_STDIO_SUPPORTED - - if (output_flush_fn != NULL) - png_ptr->output_flush_fn = output_flush_fn; - - else - png_ptr->output_flush_fn = png_default_flush; - -# else - png_ptr->output_flush_fn = output_flush_fn; -# endif -#else - PNG_UNUSED(output_flush_fn) -#endif /* WRITE_FLUSH */ - -#ifdef PNG_READ_SUPPORTED - /* It is an error to read while writing a png file */ - if (png_ptr->read_data_fn != NULL) - { - png_ptr->read_data_fn = NULL; - - png_warning(png_ptr, - "Can't set both read_data_fn and write_data_fn in the" - " same structure"); - } -#endif -} -#endif /* WRITE */ diff --git a/project/jni/png/pngwrite.c b/project/jni/png/pngwrite.c deleted file mode 100644 index a16d77ce0..000000000 --- a/project/jni/png/pngwrite.c +++ /dev/null @@ -1,2396 +0,0 @@ - -/* pngwrite.c - general routines to write a PNG file - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#include "pngpriv.h" -#ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED -# include -#endif /* SIMPLIFIED_WRITE_STDIO */ - -#ifdef PNG_WRITE_SUPPORTED - -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED -/* Write out all the unknown chunks for the current given location */ -static void -write_unknown_chunks(png_structrp png_ptr, png_const_inforp info_ptr, - unsigned int where) -{ - if (info_ptr->unknown_chunks_num != 0) - { - png_const_unknown_chunkp up; - - png_debug(5, "writing extra chunks"); - - for (up = info_ptr->unknown_chunks; - up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num; - ++up) - if ((up->location & where) != 0) - { - /* If per-chunk unknown chunk handling is enabled use it, otherwise - * just write the chunks the application has set. - */ -#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED - int keep = png_handle_as_unknown(png_ptr, up->name); - - /* NOTE: this code is radically different from the read side in the - * matter of handling an ancillary unknown chunk. In the read side - * the default behavior is to discard it, in the code below the default - * behavior is to write it. Critical chunks are, however, only - * written if explicitly listed or if the default is set to write all - * unknown chunks. - * - * The default handling is also slightly weird - it is not possible to - * stop the writing of all unsafe-to-copy chunks! - * - * TODO: REVIEW: this would seem to be a bug. - */ - if (keep != PNG_HANDLE_CHUNK_NEVER && - ((up->name[3] & 0x20) /* safe-to-copy overrides everything */ || - keep == PNG_HANDLE_CHUNK_ALWAYS || - (keep == PNG_HANDLE_CHUNK_AS_DEFAULT && - png_ptr->unknown_default == PNG_HANDLE_CHUNK_ALWAYS))) -#endif - { - /* TODO: review, what is wrong with a zero length unknown chunk? */ - if (up->size == 0) - png_warning(png_ptr, "Writing zero-length unknown chunk"); - - png_write_chunk(png_ptr, up->name, up->data, up->size); - } - } - } -} -#endif /* WRITE_UNKNOWN_CHUNKS */ - -/* Writes all the PNG information. This is the suggested way to use the - * library. If you have a new chunk to add, make a function to write it, - * and put it in the correct location here. If you want the chunk written - * after the image data, put it in png_write_end(). I strongly encourage - * you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing - * the chunk, as that will keep the code from breaking if you want to just - * write a plain PNG file. If you have long comments, I suggest writing - * them in png_write_end(), and compressing them. - */ -void PNGAPI -png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr) -{ - png_debug(1, "in png_write_info_before_PLTE"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - if ((png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE) == 0) - { - /* Write PNG signature */ - png_write_sig(png_ptr); - -#ifdef PNG_MNG_FEATURES_SUPPORTED - if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) != 0 && \ - png_ptr->mng_features_permitted != 0) - { - png_warning(png_ptr, - "MNG features are not allowed in a PNG datastream"); - png_ptr->mng_features_permitted = 0; - } -#endif - - /* Write IHDR information. */ - png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height, - info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type, - info_ptr->filter_type, -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - info_ptr->interlace_type -#else - 0 -#endif - ); - - /* The rest of these check to see if the valid field has the appropriate - * flag set, and if it does, writes the chunk. - * - * 1.6.0: COLORSPACE support controls the writing of these chunks too, and - * the chunks will be written if the WRITE routine is there and - * information * is available in the COLORSPACE. (See - * png_colorspace_sync_info in png.c for where the valid flags get set.) - * - * Under certain circumstances the colorspace can be invalidated without - * syncing the info_struct 'valid' flags; this happens if libpng detects - * an error and calls png_error while the color space is being set, yet - * the application continues writing the PNG. So check the 'invalid' - * flag here too. - */ -#ifdef PNG_GAMMA_SUPPORTED -# ifdef PNG_WRITE_gAMA_SUPPORTED - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 && - (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_gAMA) != 0 && - (info_ptr->valid & PNG_INFO_gAMA) != 0) - png_write_gAMA_fixed(png_ptr, info_ptr->colorspace.gamma); -# endif -#endif - -#ifdef PNG_COLORSPACE_SUPPORTED - /* Write only one of sRGB or an ICC profile. If a profile was supplied - * and it matches one of the known sRGB ones issue a warning. - */ -# ifdef PNG_WRITE_iCCP_SUPPORTED - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 && - (info_ptr->valid & PNG_INFO_iCCP) != 0) - { -# ifdef PNG_WRITE_sRGB_SUPPORTED - if ((info_ptr->valid & PNG_INFO_sRGB) != 0) - png_app_warning(png_ptr, - "profile matches sRGB but writing iCCP instead"); -# endif - - png_write_iCCP(png_ptr, info_ptr->iccp_name, - info_ptr->iccp_profile); - } -# ifdef PNG_WRITE_sRGB_SUPPORTED - else -# endif -# endif - -# ifdef PNG_WRITE_sRGB_SUPPORTED - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 && - (info_ptr->valid & PNG_INFO_sRGB) != 0) - png_write_sRGB(png_ptr, info_ptr->colorspace.rendering_intent); -# endif /* WRITE_sRGB */ -#endif /* COLORSPACE */ - -#ifdef PNG_WRITE_sBIT_SUPPORTED - if ((info_ptr->valid & PNG_INFO_sBIT) != 0) - png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type); -#endif - -#ifdef PNG_COLORSPACE_SUPPORTED -# ifdef PNG_WRITE_cHRM_SUPPORTED - if ((info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) == 0 && - (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) != 0 && - (info_ptr->valid & PNG_INFO_cHRM) != 0) - png_write_cHRM_fixed(png_ptr, &info_ptr->colorspace.end_points_xy); -# endif -#endif - -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - write_unknown_chunks(png_ptr, info_ptr, PNG_HAVE_IHDR); -#endif - - png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE; - } -} - -void PNGAPI -png_write_info(png_structrp png_ptr, png_const_inforp info_ptr) -{ -#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) - int i; -#endif - - png_debug(1, "in png_write_info"); - - if (png_ptr == NULL || info_ptr == NULL) - return; - - png_write_info_before_PLTE(png_ptr, info_ptr); - - if ((info_ptr->valid & PNG_INFO_PLTE) != 0) - png_write_PLTE(png_ptr, info_ptr->palette, - (png_uint_32)info_ptr->num_palette); - - else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - png_error(png_ptr, "Valid palette required for paletted images"); - -#ifdef PNG_WRITE_tRNS_SUPPORTED - if ((info_ptr->valid & PNG_INFO_tRNS) !=0) - { -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED - /* Invert the alpha channel (in tRNS) */ - if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0 && - info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - int j, jend; - - jend = info_ptr->num_trans; - if (jend > PNG_MAX_PALETTE_LENGTH) - jend = PNG_MAX_PALETTE_LENGTH; - - for (j = 0; jtrans_alpha[j] = - (png_byte)(255 - info_ptr->trans_alpha[j]); - } -#endif - png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color), - info_ptr->num_trans, info_ptr->color_type); - } -#endif -#ifdef PNG_WRITE_bKGD_SUPPORTED - if ((info_ptr->valid & PNG_INFO_bKGD) != 0) - png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type); -#endif - -#ifdef PNG_WRITE_eXIf_SUPPORTED - if ((info_ptr->valid & PNG_INFO_eXIf) != 0) - png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif); -#endif - -#ifdef PNG_WRITE_hIST_SUPPORTED - if ((info_ptr->valid & PNG_INFO_hIST) != 0) - png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette); -#endif - -#ifdef PNG_WRITE_oFFs_SUPPORTED - if ((info_ptr->valid & PNG_INFO_oFFs) != 0) - png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset, - info_ptr->offset_unit_type); -#endif - -#ifdef PNG_WRITE_pCAL_SUPPORTED - if ((info_ptr->valid & PNG_INFO_pCAL) != 0) - png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0, - info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams, - info_ptr->pcal_units, info_ptr->pcal_params); -#endif - -#ifdef PNG_WRITE_sCAL_SUPPORTED - if ((info_ptr->valid & PNG_INFO_sCAL) != 0) - png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit, - info_ptr->scal_s_width, info_ptr->scal_s_height); -#endif /* sCAL */ - -#ifdef PNG_WRITE_pHYs_SUPPORTED - if ((info_ptr->valid & PNG_INFO_pHYs) != 0) - png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit, - info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type); -#endif /* pHYs */ - -#ifdef PNG_WRITE_tIME_SUPPORTED - if ((info_ptr->valid & PNG_INFO_tIME) != 0) - { - png_write_tIME(png_ptr, &(info_ptr->mod_time)); - png_ptr->mode |= PNG_WROTE_tIME; - } -#endif /* tIME */ - -#ifdef PNG_WRITE_sPLT_SUPPORTED - if ((info_ptr->valid & PNG_INFO_sPLT) != 0) - for (i = 0; i < (int)info_ptr->splt_palettes_num; i++) - png_write_sPLT(png_ptr, info_ptr->splt_palettes + i); -#endif /* sPLT */ - -#ifdef PNG_WRITE_TEXT_SUPPORTED - /* Check to see if we need to write text chunks */ - for (i = 0; i < info_ptr->num_text; i++) - { - png_debug2(2, "Writing header text chunk %d, type %d", i, - info_ptr->text[i].compression); - /* An internationalized chunk? */ - if (info_ptr->text[i].compression > 0) - { -#ifdef PNG_WRITE_iTXt_SUPPORTED - /* Write international chunk */ - png_write_iTXt(png_ptr, - info_ptr->text[i].compression, - info_ptr->text[i].key, - info_ptr->text[i].lang, - info_ptr->text[i].lang_key, - info_ptr->text[i].text); - /* Mark this chunk as written */ - if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE) - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; - else - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR; -#else - png_warning(png_ptr, "Unable to write international text"); -#endif - } - - /* If we want a compressed text chunk */ - else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt) - { -#ifdef PNG_WRITE_zTXt_SUPPORTED - /* Write compressed chunk */ - png_write_zTXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, info_ptr->text[i].compression); - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR; -#else - png_warning(png_ptr, "Unable to write compressed text"); -#endif - } - - else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE) - { -#ifdef PNG_WRITE_tEXt_SUPPORTED - /* Write uncompressed chunk */ - png_write_tEXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, - 0); - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; -#else - /* Can't get here */ - png_warning(png_ptr, "Unable to write uncompressed text"); -#endif - } - } -#endif /* tEXt */ - -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - write_unknown_chunks(png_ptr, info_ptr, PNG_HAVE_PLTE); -#endif -} - -/* Writes the end of the PNG file. If you don't want to write comments or - * time information, you can pass NULL for info. If you already wrote these - * in png_write_info(), do not write them again here. If you have long - * comments, I suggest writing them here, and compressing them. - */ -void PNGAPI -png_write_end(png_structrp png_ptr, png_inforp info_ptr) -{ - png_debug(1, "in png_write_end"); - - if (png_ptr == NULL) - return; - - if ((png_ptr->mode & PNG_HAVE_IDAT) == 0) - png_error(png_ptr, "No IDATs written into file"); - -#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED - if (png_ptr->num_palette_max > png_ptr->num_palette) - png_benign_error(png_ptr, "Wrote palette index exceeding num_palette"); -#endif - - /* See if user wants us to write information chunks */ - if (info_ptr != NULL) - { -#ifdef PNG_WRITE_TEXT_SUPPORTED - int i; /* local index variable */ -#endif -#ifdef PNG_WRITE_tIME_SUPPORTED - /* Check to see if user has supplied a time chunk */ - if ((info_ptr->valid & PNG_INFO_tIME) != 0 && - (png_ptr->mode & PNG_WROTE_tIME) == 0) - png_write_tIME(png_ptr, &(info_ptr->mod_time)); - -#endif -#ifdef PNG_WRITE_TEXT_SUPPORTED - /* Loop through comment chunks */ - for (i = 0; i < info_ptr->num_text; i++) - { - png_debug2(2, "Writing trailer text chunk %d, type %d", i, - info_ptr->text[i].compression); - /* An internationalized chunk? */ - if (info_ptr->text[i].compression > 0) - { -#ifdef PNG_WRITE_iTXt_SUPPORTED - /* Write international chunk */ - png_write_iTXt(png_ptr, - info_ptr->text[i].compression, - info_ptr->text[i].key, - info_ptr->text[i].lang, - info_ptr->text[i].lang_key, - info_ptr->text[i].text); - /* Mark this chunk as written */ - if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE) - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; - else - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR; -#else - png_warning(png_ptr, "Unable to write international text"); -#endif - } - - else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt) - { -#ifdef PNG_WRITE_zTXt_SUPPORTED - /* Write compressed chunk */ - png_write_zTXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, info_ptr->text[i].compression); - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR; -#else - png_warning(png_ptr, "Unable to write compressed text"); -#endif - } - - else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE) - { -#ifdef PNG_WRITE_tEXt_SUPPORTED - /* Write uncompressed chunk */ - png_write_tEXt(png_ptr, info_ptr->text[i].key, - info_ptr->text[i].text, 0); - /* Mark this chunk as written */ - info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR; -#else - png_warning(png_ptr, "Unable to write uncompressed text"); -#endif - } - } -#endif - -#ifdef PNG_WRITE_eXIf_SUPPORTED - if ((info_ptr->valid & PNG_INFO_eXIf) != 0) - png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif); -#endif - -#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED - write_unknown_chunks(png_ptr, info_ptr, PNG_AFTER_IDAT); -#endif - } - - png_ptr->mode |= PNG_AFTER_IDAT; - - /* Write end of PNG file */ - png_write_IEND(png_ptr); - - /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03, - * and restored again in libpng-1.2.30, may cause some applications that - * do not set png_ptr->output_flush_fn to crash. If your application - * experiences a problem, please try building libpng with - * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to - * png-mng-implement at lists.sf.net . - */ -#ifdef PNG_WRITE_FLUSH_SUPPORTED -# ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED - png_flush(png_ptr); -# endif -#endif -} - -#ifdef PNG_CONVERT_tIME_SUPPORTED -void PNGAPI -png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm * ttime) -{ - png_debug(1, "in png_convert_from_struct_tm"); - - ptime->year = (png_uint_16)(1900 + ttime->tm_year); - ptime->month = (png_byte)(ttime->tm_mon + 1); - ptime->day = (png_byte)ttime->tm_mday; - ptime->hour = (png_byte)ttime->tm_hour; - ptime->minute = (png_byte)ttime->tm_min; - ptime->second = (png_byte)ttime->tm_sec; -} - -void PNGAPI -png_convert_from_time_t(png_timep ptime, time_t ttime) -{ - struct tm *tbuf; - - png_debug(1, "in png_convert_from_time_t"); - - tbuf = gmtime(&ttime); - png_convert_from_struct_tm(ptime, tbuf); -} -#endif - -/* Initialize png_ptr structure, and allocate any memory needed */ -PNG_FUNCTION(png_structp,PNGAPI -png_create_write_struct,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED) -{ -#ifndef PNG_USER_MEM_SUPPORTED - png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr, - error_fn, warn_fn, NULL, NULL, NULL); -#else - return png_create_write_struct_2(user_png_ver, error_ptr, error_fn, - warn_fn, NULL, NULL, NULL); -} - -/* Alternate initialize png_ptr structure, and allocate any memory needed */ -PNG_FUNCTION(png_structp,PNGAPI -png_create_write_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED) -{ - png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr, - error_fn, warn_fn, mem_ptr, malloc_fn, free_fn); -#endif /* USER_MEM */ - if (png_ptr != NULL) - { - /* Set the zlib control values to defaults; they can be overridden by the - * application after the struct has been created. - */ - png_ptr->zbuffer_size = PNG_ZBUF_SIZE; - - /* The 'zlib_strategy' setting is irrelevant because png_default_claim in - * pngwutil.c defaults it according to whether or not filters will be - * used, and ignores this setting. - */ - png_ptr->zlib_strategy = PNG_Z_DEFAULT_STRATEGY; - png_ptr->zlib_level = PNG_Z_DEFAULT_COMPRESSION; - png_ptr->zlib_mem_level = 8; - png_ptr->zlib_window_bits = 15; - png_ptr->zlib_method = 8; - -#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED - png_ptr->zlib_text_strategy = PNG_TEXT_Z_DEFAULT_STRATEGY; - png_ptr->zlib_text_level = PNG_TEXT_Z_DEFAULT_COMPRESSION; - png_ptr->zlib_text_mem_level = 8; - png_ptr->zlib_text_window_bits = 15; - png_ptr->zlib_text_method = 8; -#endif /* WRITE_COMPRESSED_TEXT */ - - /* This is a highly dubious configuration option; by default it is off, - * but it may be appropriate for private builds that are testing - * extensions not conformant to the current specification, or of - * applications that must not fail to write at all costs! - */ -#ifdef PNG_BENIGN_WRITE_ERRORS_SUPPORTED - /* In stable builds only warn if an application error can be completely - * handled. - */ - png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; -#endif - - /* App warnings are warnings in release (or release candidate) builds but - * are errors during development. - */ -#if PNG_RELEASE_BUILD - png_ptr->flags |= PNG_FLAG_APP_WARNINGS_WARN; -#endif - - /* TODO: delay this, it can be done in png_init_io() (if the app doesn't - * do it itself) avoiding setting the default function if it is not - * required. - */ - png_set_write_fn(png_ptr, NULL, NULL, NULL); - } - - return png_ptr; -} - - -/* Write a few rows of image data. If the image is interlaced, - * either you will have to write the 7 sub images, or, if you - * have called png_set_interlace_handling(), you will have to - * "write" the image seven times. - */ -void PNGAPI -png_write_rows(png_structrp png_ptr, png_bytepp row, - png_uint_32 num_rows) -{ - png_uint_32 i; /* row counter */ - png_bytepp rp; /* row pointer */ - - png_debug(1, "in png_write_rows"); - - if (png_ptr == NULL) - return; - - /* Loop through the rows */ - for (i = 0, rp = row; i < num_rows; i++, rp++) - { - png_write_row(png_ptr, *rp); - } -} - -/* Write the image. You only need to call this function once, even - * if you are writing an interlaced image. - */ -void PNGAPI -png_write_image(png_structrp png_ptr, png_bytepp image) -{ - png_uint_32 i; /* row index */ - int pass, num_pass; /* pass variables */ - png_bytepp rp; /* points to current row */ - - if (png_ptr == NULL) - return; - - png_debug(1, "in png_write_image"); - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Initialize interlace handling. If image is not interlaced, - * this will set pass to 1 - */ - num_pass = png_set_interlace_handling(png_ptr); -#else - num_pass = 1; -#endif - /* Loop through passes */ - for (pass = 0; pass < num_pass; pass++) - { - /* Loop through image */ - for (i = 0, rp = image; i < png_ptr->height; i++, rp++) - { - png_write_row(png_ptr, *rp); - } - } -} - -#ifdef PNG_MNG_FEATURES_SUPPORTED -/* Performs intrapixel differencing */ -static void -png_do_write_intrapixel(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_write_intrapixel"); - - if ((row_info->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - int bytes_per_pixel; - png_uint_32 row_width = row_info->width; - if (row_info->bit_depth == 8) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 3; - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 4; - - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - *(rp) = (png_byte)(*rp - *(rp + 1)); - *(rp + 2) = (png_byte)(*(rp + 2) - *(rp + 1)); - } - } - -#ifdef PNG_WRITE_16BIT_SUPPORTED - else if (row_info->bit_depth == 16) - { - png_bytep rp; - png_uint_32 i; - - if (row_info->color_type == PNG_COLOR_TYPE_RGB) - bytes_per_pixel = 6; - - else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - bytes_per_pixel = 8; - - else - return; - - for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel) - { - png_uint_32 s0 = (png_uint_32)(*(rp ) << 8) | *(rp + 1); - png_uint_32 s1 = (png_uint_32)(*(rp + 2) << 8) | *(rp + 3); - png_uint_32 s2 = (png_uint_32)(*(rp + 4) << 8) | *(rp + 5); - png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL); - png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL); - *(rp ) = (png_byte)(red >> 8); - *(rp + 1) = (png_byte)red; - *(rp + 4) = (png_byte)(blue >> 8); - *(rp + 5) = (png_byte)blue; - } - } -#endif /* WRITE_16BIT */ - } -} -#endif /* MNG_FEATURES */ - -/* Called by user to write a row of image data */ -void PNGAPI -png_write_row(png_structrp png_ptr, png_const_bytep row) -{ - /* 1.5.6: moved from png_struct to be a local structure: */ - png_row_info row_info; - - if (png_ptr == NULL) - return; - - png_debug2(1, "in png_write_row (row %u, pass %d)", - png_ptr->row_number, png_ptr->pass); - - /* Initialize transformations and other stuff if first time */ - if (png_ptr->row_number == 0 && png_ptr->pass == 0) - { - /* Make sure we wrote the header info */ - if ((png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE) == 0) - png_error(png_ptr, - "png_write_info was never called before png_write_row"); - - /* Check for transforms that have been set but were defined out */ -#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED) - if ((png_ptr->transformations & PNG_INVERT_MONO) != 0) - png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined"); -#endif - -#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED) - if ((png_ptr->transformations & PNG_FILLER) != 0) - png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined"); -#endif -#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \ - defined(PNG_READ_PACKSWAP_SUPPORTED) - if ((png_ptr->transformations & PNG_PACKSWAP) != 0) - png_warning(png_ptr, - "PNG_WRITE_PACKSWAP_SUPPORTED is not defined"); -#endif - -#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED) - if ((png_ptr->transformations & PNG_PACK) != 0) - png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined"); -#endif - -#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED) - if ((png_ptr->transformations & PNG_SHIFT) != 0) - png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined"); -#endif - -#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED) - if ((png_ptr->transformations & PNG_BGR) != 0) - png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined"); -#endif - -#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED) - if ((png_ptr->transformations & PNG_SWAP_BYTES) != 0) - png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined"); -#endif - - png_write_start_row(png_ptr); - } - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* If interlaced and not interested in row, return */ - if (png_ptr->interlaced != 0 && - (png_ptr->transformations & PNG_INTERLACE) != 0) - { - switch (png_ptr->pass) - { - case 0: - if ((png_ptr->row_number & 0x07) != 0) - { - png_write_finish_row(png_ptr); - return; - } - break; - - case 1: - if ((png_ptr->row_number & 0x07) != 0 || png_ptr->width < 5) - { - png_write_finish_row(png_ptr); - return; - } - break; - - case 2: - if ((png_ptr->row_number & 0x07) != 4) - { - png_write_finish_row(png_ptr); - return; - } - break; - - case 3: - if ((png_ptr->row_number & 0x03) != 0 || png_ptr->width < 3) - { - png_write_finish_row(png_ptr); - return; - } - break; - - case 4: - if ((png_ptr->row_number & 0x03) != 2) - { - png_write_finish_row(png_ptr); - return; - } - break; - - case 5: - if ((png_ptr->row_number & 0x01) != 0 || png_ptr->width < 2) - { - png_write_finish_row(png_ptr); - return; - } - break; - - case 6: - if ((png_ptr->row_number & 0x01) == 0) - { - png_write_finish_row(png_ptr); - return; - } - break; - - default: /* error: ignore it */ - break; - } - } -#endif - - /* Set up row info for transformations */ - row_info.color_type = png_ptr->color_type; - row_info.width = png_ptr->usr_width; - row_info.channels = png_ptr->usr_channels; - row_info.bit_depth = png_ptr->usr_bit_depth; - row_info.pixel_depth = (png_byte)(row_info.bit_depth * row_info.channels); - row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width); - - png_debug1(3, "row_info->color_type = %d", row_info.color_type); - png_debug1(3, "row_info->width = %u", row_info.width); - png_debug1(3, "row_info->channels = %d", row_info.channels); - png_debug1(3, "row_info->bit_depth = %d", row_info.bit_depth); - png_debug1(3, "row_info->pixel_depth = %d", row_info.pixel_depth); - png_debug1(3, "row_info->rowbytes = %lu", (unsigned long)row_info.rowbytes); - - /* Copy user's row into buffer, leaving room for filter byte. */ - memcpy(png_ptr->row_buf + 1, row, row_info.rowbytes); - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Handle interlacing */ - if (png_ptr->interlaced && png_ptr->pass < 6 && - (png_ptr->transformations & PNG_INTERLACE) != 0) - { - png_do_write_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass); - /* This should always get caught above, but still ... */ - if (row_info.width == 0) - { - png_write_finish_row(png_ptr); - return; - } - } -#endif - -#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED - /* Handle other transformations */ - if (png_ptr->transformations != 0) - png_do_write_transformations(png_ptr, &row_info); -#endif - - /* At this point the row_info pixel depth must match the 'transformed' depth, - * which is also the output depth. - */ - if (row_info.pixel_depth != png_ptr->pixel_depth || - row_info.pixel_depth != png_ptr->transformed_pixel_depth) - png_error(png_ptr, "internal write transform logic error"); - -#ifdef PNG_MNG_FEATURES_SUPPORTED - /* Write filter_method 64 (intrapixel differencing) only if - * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and - * 2. Libpng did not write a PNG signature (this filter_method is only - * used in PNG datastreams that are embedded in MNG datastreams) and - * 3. The application called png_permit_mng_features with a mask that - * included PNG_FLAG_MNG_FILTER_64 and - * 4. The filter_method is 64 and - * 5. The color_type is RGB or RGBA - */ - if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) != 0 && - (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING)) - { - /* Intrapixel differencing */ - png_do_write_intrapixel(&row_info, png_ptr->row_buf + 1); - } -#endif - -/* Added at libpng-1.5.10 */ -#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED - /* Check for out-of-range palette index */ - if (row_info.color_type == PNG_COLOR_TYPE_PALETTE && - png_ptr->num_palette_max >= 0) - png_do_check_palette_indexes(png_ptr, &row_info); -#endif - - /* Find a filter if necessary, filter the row and write it out. */ - png_write_find_filter(png_ptr, &row_info); - - if (png_ptr->write_row_fn != NULL) - (*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass); -} - -#ifdef PNG_WRITE_FLUSH_SUPPORTED -/* Set the automatic flush interval or 0 to turn flushing off */ -void PNGAPI -png_set_flush(png_structrp png_ptr, int nrows) -{ - png_debug(1, "in png_set_flush"); - - if (png_ptr == NULL) - return; - - png_ptr->flush_dist = (nrows < 0 ? 0 : (png_uint_32)nrows); -} - -/* Flush the current output buffers now */ -void PNGAPI -png_write_flush(png_structrp png_ptr) -{ - png_debug(1, "in png_write_flush"); - - if (png_ptr == NULL) - return; - - /* We have already written out all of the data */ - if (png_ptr->row_number >= png_ptr->num_rows) - return; - - png_compress_IDAT(png_ptr, NULL, 0, Z_SYNC_FLUSH); - png_ptr->flush_rows = 0; - png_flush(png_ptr); -} -#endif /* WRITE_FLUSH */ - -/* Free any memory used in png_ptr struct without freeing the struct itself. */ -static void -png_write_destroy(png_structrp png_ptr) -{ - png_debug(1, "in png_write_destroy"); - - /* Free any memory zlib uses */ - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0) - deflateEnd(&png_ptr->zstream); - - /* Free our memory. png_free checks NULL for us. */ - png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list); - png_free(png_ptr, png_ptr->row_buf); - png_ptr->row_buf = NULL; -#ifdef PNG_WRITE_FILTER_SUPPORTED - png_free(png_ptr, png_ptr->prev_row); - png_free(png_ptr, png_ptr->try_row); - png_free(png_ptr, png_ptr->tst_row); - png_ptr->prev_row = NULL; - png_ptr->try_row = NULL; - png_ptr->tst_row = NULL; -#endif - -#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED - png_free(png_ptr, png_ptr->chunk_list); - png_ptr->chunk_list = NULL; -#endif - - /* The error handling and memory handling information is left intact at this - * point: the jmp_buf may still have to be freed. See png_destroy_png_struct - * for how this happens. - */ -} - -/* Free all memory used by the write. - * In libpng 1.6.0 this API changed quietly to no longer accept a NULL value for - * *png_ptr_ptr. Prior to 1.6.0 it would accept such a value and it would free - * the passed in info_structs but it would quietly fail to free any of the data - * inside them. In 1.6.0 it quietly does nothing (it has to be quiet because it - * has no png_ptr.) - */ -void PNGAPI -png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr) -{ - png_debug(1, "in png_destroy_write_struct"); - - if (png_ptr_ptr != NULL) - { - png_structrp png_ptr = *png_ptr_ptr; - - if (png_ptr != NULL) /* added in libpng 1.6.0 */ - { - png_destroy_info_struct(png_ptr, info_ptr_ptr); - - *png_ptr_ptr = NULL; - png_write_destroy(png_ptr); - png_destroy_png_struct(png_ptr); - } - } -} - -/* Allow the application to select one or more row filters to use. */ -void PNGAPI -png_set_filter(png_structrp png_ptr, int method, int filters) -{ - png_debug(1, "in png_set_filter"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_MNG_FEATURES_SUPPORTED - if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) != 0 && - (method == PNG_INTRAPIXEL_DIFFERENCING)) - method = PNG_FILTER_TYPE_BASE; - -#endif - if (method == PNG_FILTER_TYPE_BASE) - { - switch (filters & (PNG_ALL_FILTERS | 0x07)) - { -#ifdef PNG_WRITE_FILTER_SUPPORTED - case 5: - case 6: - case 7: png_app_error(png_ptr, "Unknown row filter for method 0"); -#endif /* WRITE_FILTER */ - /* FALLTHROUGH */ - case PNG_FILTER_VALUE_NONE: - png_ptr->do_filter = PNG_FILTER_NONE; break; - -#ifdef PNG_WRITE_FILTER_SUPPORTED - case PNG_FILTER_VALUE_SUB: - png_ptr->do_filter = PNG_FILTER_SUB; break; - - case PNG_FILTER_VALUE_UP: - png_ptr->do_filter = PNG_FILTER_UP; break; - - case PNG_FILTER_VALUE_AVG: - png_ptr->do_filter = PNG_FILTER_AVG; break; - - case PNG_FILTER_VALUE_PAETH: - png_ptr->do_filter = PNG_FILTER_PAETH; break; - - default: - png_ptr->do_filter = (png_byte)filters; break; -#else - default: - png_app_error(png_ptr, "Unknown row filter for method 0"); -#endif /* WRITE_FILTER */ - } - -#ifdef PNG_WRITE_FILTER_SUPPORTED - /* If we have allocated the row_buf, this means we have already started - * with the image and we should have allocated all of the filter buffers - * that have been selected. If prev_row isn't already allocated, then - * it is too late to start using the filters that need it, since we - * will be missing the data in the previous row. If an application - * wants to start and stop using particular filters during compression, - * it should start out with all of the filters, and then remove them - * or add them back after the start of compression. - * - * NOTE: this is a nasty constraint on the code, because it means that the - * prev_row buffer must be maintained even if there are currently no - * 'prev_row' requiring filters active. - */ - if (png_ptr->row_buf != NULL) - { - int num_filters; - png_alloc_size_t buf_size; - - /* Repeat the checks in png_write_start_row; 1 pixel high or wide - * images cannot benefit from certain filters. If this isn't done here - * the check below will fire on 1 pixel high images. - */ - if (png_ptr->height == 1) - filters &= ~(PNG_FILTER_UP|PNG_FILTER_AVG|PNG_FILTER_PAETH); - - if (png_ptr->width == 1) - filters &= ~(PNG_FILTER_SUB|PNG_FILTER_AVG|PNG_FILTER_PAETH); - - if ((filters & (PNG_FILTER_UP|PNG_FILTER_AVG|PNG_FILTER_PAETH)) != 0 - && png_ptr->prev_row == NULL) - { - /* This is the error case, however it is benign - the previous row - * is not available so the filter can't be used. Just warn here. - */ - png_app_warning(png_ptr, - "png_set_filter: UP/AVG/PAETH cannot be added after start"); - filters &= ~(PNG_FILTER_UP|PNG_FILTER_AVG|PNG_FILTER_PAETH); - } - - num_filters = 0; - - if (filters & PNG_FILTER_SUB) - num_filters++; - - if (filters & PNG_FILTER_UP) - num_filters++; - - if (filters & PNG_FILTER_AVG) - num_filters++; - - if (filters & PNG_FILTER_PAETH) - num_filters++; - - /* Allocate needed row buffers if they have not already been - * allocated. - */ - buf_size = PNG_ROWBYTES(png_ptr->usr_channels * png_ptr->usr_bit_depth, - png_ptr->width) + 1; - - if (png_ptr->try_row == NULL) - png_ptr->try_row = png_voidcast(png_bytep, - png_malloc(png_ptr, buf_size)); - - if (num_filters > 1) - { - if (png_ptr->tst_row == NULL) - png_ptr->tst_row = png_voidcast(png_bytep, - png_malloc(png_ptr, buf_size)); - } - } - png_ptr->do_filter = (png_byte)filters; -#endif - } - else - png_error(png_ptr, "Unknown custom filter method"); -} - -#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* DEPRECATED */ -/* Provide floating and fixed point APIs */ -#ifdef PNG_FLOATING_POINT_SUPPORTED -void PNGAPI -png_set_filter_heuristics(png_structrp png_ptr, int heuristic_method, - int num_weights, png_const_doublep filter_weights, - png_const_doublep filter_costs) -{ - PNG_UNUSED(png_ptr) - PNG_UNUSED(heuristic_method) - PNG_UNUSED(num_weights) - PNG_UNUSED(filter_weights) - PNG_UNUSED(filter_costs) -} -#endif /* FLOATING_POINT */ - -#ifdef PNG_FIXED_POINT_SUPPORTED -void PNGAPI -png_set_filter_heuristics_fixed(png_structrp png_ptr, int heuristic_method, - int num_weights, png_const_fixed_point_p filter_weights, - png_const_fixed_point_p filter_costs) -{ - PNG_UNUSED(png_ptr) - PNG_UNUSED(heuristic_method) - PNG_UNUSED(num_weights) - PNG_UNUSED(filter_weights) - PNG_UNUSED(filter_costs) -} -#endif /* FIXED_POINT */ -#endif /* WRITE_WEIGHTED_FILTER */ - -#ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED -void PNGAPI -png_set_compression_level(png_structrp png_ptr, int level) -{ - png_debug(1, "in png_set_compression_level"); - - if (png_ptr == NULL) - return; - - png_ptr->zlib_level = level; -} - -void PNGAPI -png_set_compression_mem_level(png_structrp png_ptr, int mem_level) -{ - png_debug(1, "in png_set_compression_mem_level"); - - if (png_ptr == NULL) - return; - - png_ptr->zlib_mem_level = mem_level; -} - -void PNGAPI -png_set_compression_strategy(png_structrp png_ptr, int strategy) -{ - png_debug(1, "in png_set_compression_strategy"); - - if (png_ptr == NULL) - return; - - /* The flag setting here prevents the libpng dynamic selection of strategy. - */ - png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY; - png_ptr->zlib_strategy = strategy; -} - -/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a - * smaller value of window_bits if it can do so safely. - */ -void PNGAPI -png_set_compression_window_bits(png_structrp png_ptr, int window_bits) -{ - if (png_ptr == NULL) - return; - - /* Prior to 1.6.0 this would warn but then set the window_bits value. This - * meant that negative window bits values could be selected that would cause - * libpng to write a non-standard PNG file with raw deflate or gzip - * compressed IDAT or ancillary chunks. Such files can be read and there is - * no warning on read, so this seems like a very bad idea. - */ - if (window_bits > 15) - { - png_warning(png_ptr, "Only compression windows <= 32k supported by PNG"); - window_bits = 15; - } - - else if (window_bits < 8) - { - png_warning(png_ptr, "Only compression windows >= 256 supported by PNG"); - window_bits = 8; - } - - png_ptr->zlib_window_bits = window_bits; -} - -void PNGAPI -png_set_compression_method(png_structrp png_ptr, int method) -{ - png_debug(1, "in png_set_compression_method"); - - if (png_ptr == NULL) - return; - - /* This would produce an invalid PNG file if it worked, but it doesn't and - * deflate will fault it, so it is harmless to just warn here. - */ - if (method != 8) - png_warning(png_ptr, "Only compression method 8 is supported by PNG"); - - png_ptr->zlib_method = method; -} -#endif /* WRITE_CUSTOMIZE_COMPRESSION */ - -/* The following were added to libpng-1.5.4 */ -#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED -void PNGAPI -png_set_text_compression_level(png_structrp png_ptr, int level) -{ - png_debug(1, "in png_set_text_compression_level"); - - if (png_ptr == NULL) - return; - - png_ptr->zlib_text_level = level; -} - -void PNGAPI -png_set_text_compression_mem_level(png_structrp png_ptr, int mem_level) -{ - png_debug(1, "in png_set_text_compression_mem_level"); - - if (png_ptr == NULL) - return; - - png_ptr->zlib_text_mem_level = mem_level; -} - -void PNGAPI -png_set_text_compression_strategy(png_structrp png_ptr, int strategy) -{ - png_debug(1, "in png_set_text_compression_strategy"); - - if (png_ptr == NULL) - return; - - png_ptr->zlib_text_strategy = strategy; -} - -/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a - * smaller value of window_bits if it can do so safely. - */ -void PNGAPI -png_set_text_compression_window_bits(png_structrp png_ptr, int window_bits) -{ - if (png_ptr == NULL) - return; - - if (window_bits > 15) - { - png_warning(png_ptr, "Only compression windows <= 32k supported by PNG"); - window_bits = 15; - } - - else if (window_bits < 8) - { - png_warning(png_ptr, "Only compression windows >= 256 supported by PNG"); - window_bits = 8; - } - - png_ptr->zlib_text_window_bits = window_bits; -} - -void PNGAPI -png_set_text_compression_method(png_structrp png_ptr, int method) -{ - png_debug(1, "in png_set_text_compression_method"); - - if (png_ptr == NULL) - return; - - if (method != 8) - png_warning(png_ptr, "Only compression method 8 is supported by PNG"); - - png_ptr->zlib_text_method = method; -} -#endif /* WRITE_CUSTOMIZE_ZTXT_COMPRESSION */ -/* end of API added to libpng-1.5.4 */ - -void PNGAPI -png_set_write_status_fn(png_structrp png_ptr, png_write_status_ptr write_row_fn) -{ - if (png_ptr == NULL) - return; - - png_ptr->write_row_fn = write_row_fn; -} - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED -void PNGAPI -png_set_write_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr - write_user_transform_fn) -{ - png_debug(1, "in png_set_write_user_transform_fn"); - - if (png_ptr == NULL) - return; - - png_ptr->transformations |= PNG_USER_TRANSFORM; - png_ptr->write_user_transform_fn = write_user_transform_fn; -} -#endif - - -#ifdef PNG_INFO_IMAGE_SUPPORTED -void PNGAPI -png_write_png(png_structrp png_ptr, png_inforp info_ptr, - int transforms, voidp params) -{ - if (png_ptr == NULL || info_ptr == NULL) - return; - - if ((info_ptr->valid & PNG_INFO_IDAT) == 0) - { - png_app_error(png_ptr, "no rows for png_write_image to write"); - return; - } - - /* Write the file header information. */ - png_write_info(png_ptr, info_ptr); - - /* ------ these transformations don't touch the info structure ------- */ - - /* Invert monochrome pixels */ - if ((transforms & PNG_TRANSFORM_INVERT_MONO) != 0) -#ifdef PNG_WRITE_INVERT_SUPPORTED - png_set_invert_mono(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_INVERT_MONO not supported"); -#endif - - /* Shift the pixels up to a legal bit depth and fill in - * as appropriate to correctly scale the image. - */ - if ((transforms & PNG_TRANSFORM_SHIFT) != 0) -#ifdef PNG_WRITE_SHIFT_SUPPORTED - if ((info_ptr->valid & PNG_INFO_sBIT) != 0) - png_set_shift(png_ptr, &info_ptr->sig_bit); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SHIFT not supported"); -#endif - - /* Pack pixels into bytes */ - if ((transforms & PNG_TRANSFORM_PACKING) != 0) -#ifdef PNG_WRITE_PACK_SUPPORTED - png_set_packing(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_PACKING not supported"); -#endif - - /* Swap location of alpha bytes from ARGB to RGBA */ - if ((transforms & PNG_TRANSFORM_SWAP_ALPHA) != 0) -#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED - png_set_swap_alpha(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SWAP_ALPHA not supported"); -#endif - - /* Remove a filler (X) from XRGB/RGBX/AG/GA into to convert it into - * RGB, note that the code expects the input color type to be G or RGB; no - * alpha channel. - */ - if ((transforms & (PNG_TRANSFORM_STRIP_FILLER_AFTER| - PNG_TRANSFORM_STRIP_FILLER_BEFORE)) != 0) - { -#ifdef PNG_WRITE_FILLER_SUPPORTED - if ((transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER) != 0) - { - if ((transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE) != 0) - png_app_error(png_ptr, - "PNG_TRANSFORM_STRIP_FILLER: BEFORE+AFTER not supported"); - - /* Continue if ignored - this is the pre-1.6.10 behavior */ - png_set_filler(png_ptr, 0, PNG_FILLER_AFTER); - } - - else if ((transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE) != 0) - png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_STRIP_FILLER not supported"); -#endif - } - - /* Flip BGR pixels to RGB */ - if ((transforms & PNG_TRANSFORM_BGR) != 0) -#ifdef PNG_WRITE_BGR_SUPPORTED - png_set_bgr(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_BGR not supported"); -#endif - - /* Swap bytes of 16-bit files to most significant byte first */ - if ((transforms & PNG_TRANSFORM_SWAP_ENDIAN) != 0) -#ifdef PNG_WRITE_SWAP_SUPPORTED - png_set_swap(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_SWAP_ENDIAN not supported"); -#endif - - /* Swap bits of 1-bit, 2-bit, 4-bit packed pixel formats */ - if ((transforms & PNG_TRANSFORM_PACKSWAP) != 0) -#ifdef PNG_WRITE_PACKSWAP_SUPPORTED - png_set_packswap(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_PACKSWAP not supported"); -#endif - - /* Invert the alpha channel from opacity to transparency */ - if ((transforms & PNG_TRANSFORM_INVERT_ALPHA) != 0) -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED - png_set_invert_alpha(png_ptr); -#else - png_app_error(png_ptr, "PNG_TRANSFORM_INVERT_ALPHA not supported"); -#endif - - /* ----------------------- end of transformations ------------------- */ - - /* Write the bits */ - png_write_image(png_ptr, info_ptr->row_pointers); - - /* It is REQUIRED to call this to finish writing the rest of the file */ - png_write_end(png_ptr, info_ptr); - - PNG_UNUSED(params) -} -#endif - - -#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED -/* Initialize the write structure - general purpose utility. */ -static int -png_image_write_init(png_imagep image) -{ - png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, image, - png_safe_error, png_safe_warning); - - if (png_ptr != NULL) - { - png_infop info_ptr = png_create_info_struct(png_ptr); - - if (info_ptr != NULL) - { - png_controlp control = png_voidcast(png_controlp, - png_malloc_warn(png_ptr, (sizeof *control))); - - if (control != NULL) - { - memset(control, 0, (sizeof *control)); - - control->png_ptr = png_ptr; - control->info_ptr = info_ptr; - control->for_write = 1; - - image->opaque = control; - return 1; - } - - /* Error clean up */ - png_destroy_info_struct(png_ptr, &info_ptr); - } - - png_destroy_write_struct(&png_ptr, NULL); - } - - return png_image_error(image, "png_image_write_: out of memory"); -} - -/* Arguments to png_image_write_main: */ -typedef struct -{ - /* Arguments: */ - png_imagep image; - png_const_voidp buffer; - png_int_32 row_stride; - png_const_voidp colormap; - int convert_to_8bit; - /* Local variables: */ - png_const_voidp first_row; - ptrdiff_t row_bytes; - png_voidp local_row; - /* Byte count for memory writing */ - png_bytep memory; - png_alloc_size_t memory_bytes; /* not used for STDIO */ - png_alloc_size_t output_bytes; /* running total */ -} png_image_write_control; - -/* Write png_uint_16 input to a 16-bit PNG; the png_ptr has already been set to - * do any necessary byte swapping. The component order is defined by the - * png_image format value. - */ -static int -png_write_image_16bit(png_voidp argument) -{ - png_image_write_control *display = png_voidcast(png_image_write_control*, - argument); - png_imagep image = display->image; - png_structrp png_ptr = image->opaque->png_ptr; - - png_const_uint_16p input_row = png_voidcast(png_const_uint_16p, - display->first_row); - png_uint_16p output_row = png_voidcast(png_uint_16p, display->local_row); - png_uint_16p row_end; - const unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ? - 3 : 1; - int aindex = 0; - png_uint_32 y = image->height; - - if ((image->format & PNG_FORMAT_FLAG_ALPHA) != 0) - { -# ifdef PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED - if ((image->format & PNG_FORMAT_FLAG_AFIRST) != 0) - { - aindex = -1; - ++input_row; /* To point to the first component */ - ++output_row; - } - else - aindex = (int)channels; -# else - aindex = (int)channels; -# endif - } - - else - png_error(png_ptr, "png_write_image: internal call error"); - - /* Work out the output row end and count over this, note that the increment - * above to 'row' means that row_end can actually be beyond the end of the - * row; this is correct. - */ - row_end = output_row + image->width * (channels+1); - - for (; y > 0; --y) - { - png_const_uint_16p in_ptr = input_row; - png_uint_16p out_ptr = output_row; - - while (out_ptr < row_end) - { - const png_uint_16 alpha = in_ptr[aindex]; - png_uint_32 reciprocal = 0; - int c; - - out_ptr[aindex] = alpha; - - /* Calculate a reciprocal. The correct calculation is simply - * component/alpha*65535 << 15. (I.e. 15 bits of precision); this - * allows correct rounding by adding .5 before the shift. 'reciprocal' - * is only initialized when required. - */ - if (alpha > 0 && alpha < 65535) - reciprocal = ((0xffff<<15)+(alpha>>1))/alpha; - - c = (int)channels; - do /* always at least one channel */ - { - png_uint_16 component = *in_ptr++; - - /* The following gives 65535 for an alpha of 0, which is fine, - * otherwise if 0/0 is represented as some other value there is more - * likely to be a discontinuity which will probably damage - * compression when moving from a fully transparent area to a - * nearly transparent one. (The assumption here is that opaque - * areas tend not to be 0 intensity.) - */ - if (component >= alpha) - component = 65535; - - /* component 0 && alpha < 65535) - { - png_uint_32 calc = component * reciprocal; - calc += 16384; /* round to nearest */ - component = (png_uint_16)(calc >> 15); - } - - *out_ptr++ = component; - } - while (--c > 0); - - /* Skip to next component (skip the intervening alpha channel) */ - ++in_ptr; - ++out_ptr; - } - - png_write_row(png_ptr, png_voidcast(png_const_bytep, display->local_row)); - input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16)); - } - - return 1; -} - -/* Given 16-bit input (1 to 4 channels) write 8-bit output. If an alpha channel - * is present it must be removed from the components, the components are then - * written in sRGB encoding. No components are added or removed. - * - * Calculate an alpha reciprocal to reverse pre-multiplication. As above the - * calculation can be done to 15 bits of accuracy; however, the output needs to - * be scaled in the range 0..255*65535, so include that scaling here. - */ -# define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+(alpha>>1))/alpha) - -static png_byte -png_unpremultiply(png_uint_32 component, png_uint_32 alpha, - png_uint_32 reciprocal/*from the above macro*/) -{ - /* The following gives 1.0 for an alpha of 0, which is fine, otherwise if 0/0 - * is represented as some other value there is more likely to be a - * discontinuity which will probably damage compression when moving from a - * fully transparent area to a nearly transparent one. (The assumption here - * is that opaque areas tend not to be 0 intensity.) - * - * There is a rounding problem here; if alpha is less than 128 it will end up - * as 0 when scaled to 8 bits. To avoid introducing spurious colors into the - * output change for this too. - */ - if (component >= alpha || alpha < 128) - return 255; - - /* component 0) - { - /* The test is that alpha/257 (rounded) is less than 255, the first value - * that becomes 255 is 65407. - * NOTE: this must agree with the PNG_DIV257 macro (which must, therefore, - * be exact!) [Could also test reciprocal != 0] - */ - if (alpha < 65407) - { - component *= reciprocal; - component += 64; /* round to nearest */ - component >>= 7; - } - - else - component *= 255; - - /* Convert the component to sRGB. */ - return (png_byte)PNG_sRGB_FROM_LINEAR(component); - } - - else - return 0; -} - -static int -png_write_image_8bit(png_voidp argument) -{ - png_image_write_control *display = png_voidcast(png_image_write_control*, - argument); - png_imagep image = display->image; - png_structrp png_ptr = image->opaque->png_ptr; - - png_const_uint_16p input_row = png_voidcast(png_const_uint_16p, - display->first_row); - png_bytep output_row = png_voidcast(png_bytep, display->local_row); - png_uint_32 y = image->height; - const unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) != 0 ? - 3 : 1; - - if ((image->format & PNG_FORMAT_FLAG_ALPHA) != 0) - { - png_bytep row_end; - int aindex; - -# ifdef PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED - if ((image->format & PNG_FORMAT_FLAG_AFIRST) != 0) - { - aindex = -1; - ++input_row; /* To point to the first component */ - ++output_row; - } - - else -# endif - aindex = (int)channels; - - /* Use row_end in place of a loop counter: */ - row_end = output_row + image->width * (channels+1); - - for (; y > 0; --y) - { - png_const_uint_16p in_ptr = input_row; - png_bytep out_ptr = output_row; - - while (out_ptr < row_end) - { - png_uint_16 alpha = in_ptr[aindex]; - png_byte alphabyte = (png_byte)PNG_DIV257(alpha); - png_uint_32 reciprocal = 0; - int c; - - /* Scale and write the alpha channel. */ - out_ptr[aindex] = alphabyte; - - if (alphabyte > 0 && alphabyte < 255) - reciprocal = UNP_RECIPROCAL(alpha); - - c = (int)channels; - do /* always at least one channel */ - *out_ptr++ = png_unpremultiply(*in_ptr++, alpha, reciprocal); - while (--c > 0); - - /* Skip to next component (skip the intervening alpha channel) */ - ++in_ptr; - ++out_ptr; - } /* while out_ptr < row_end */ - - png_write_row(png_ptr, png_voidcast(png_const_bytep, - display->local_row)); - input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16)); - } /* while y */ - } - - else - { - /* No alpha channel, so the row_end really is the end of the row and it - * is sufficient to loop over the components one by one. - */ - png_bytep row_end = output_row + image->width * channels; - - for (; y > 0; --y) - { - png_const_uint_16p in_ptr = input_row; - png_bytep out_ptr = output_row; - - while (out_ptr < row_end) - { - png_uint_32 component = *in_ptr++; - - component *= 255; - *out_ptr++ = (png_byte)PNG_sRGB_FROM_LINEAR(component); - } - - png_write_row(png_ptr, output_row); - input_row += (png_uint_16)display->row_bytes/(sizeof (png_uint_16)); - } - } - - return 1; -} - -static void -png_image_set_PLTE(png_image_write_control *display) -{ - const png_imagep image = display->image; - const void *cmap = display->colormap; - const int entries = image->colormap_entries > 256 ? 256 : - (int)image->colormap_entries; - - /* NOTE: the caller must check for cmap != NULL and entries != 0 */ - const png_uint_32 format = image->format; - const unsigned int channels = PNG_IMAGE_SAMPLE_CHANNELS(format); - -# if defined(PNG_FORMAT_BGR_SUPPORTED) &&\ - defined(PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED) - const int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 && - (format & PNG_FORMAT_FLAG_ALPHA) != 0; -# else -# define afirst 0 -# endif - -# ifdef PNG_FORMAT_BGR_SUPPORTED - const int bgr = (format & PNG_FORMAT_FLAG_BGR) != 0 ? 2 : 0; -# else -# define bgr 0 -# endif - - int i, num_trans; - png_color palette[256]; - png_byte tRNS[256]; - - memset(tRNS, 255, (sizeof tRNS)); - memset(palette, 0, (sizeof palette)); - - for (i=num_trans=0; i= 3) /* RGB */ - { - palette[i].blue = (png_byte)PNG_sRGB_FROM_LINEAR(255 * - entry[(2 ^ bgr)]); - palette[i].green = (png_byte)PNG_sRGB_FROM_LINEAR(255 * - entry[1]); - palette[i].red = (png_byte)PNG_sRGB_FROM_LINEAR(255 * - entry[bgr]); - } - - else /* Gray */ - palette[i].blue = palette[i].red = palette[i].green = - (png_byte)PNG_sRGB_FROM_LINEAR(255 * *entry); - } - - else /* alpha */ - { - png_uint_16 alpha = entry[afirst ? 0 : channels-1]; - png_byte alphabyte = (png_byte)PNG_DIV257(alpha); - png_uint_32 reciprocal = 0; - - /* Calculate a reciprocal, as in the png_write_image_8bit code above - * this is designed to produce a value scaled to 255*65535 when - * divided by 128 (i.e. asr 7). - */ - if (alphabyte > 0 && alphabyte < 255) - reciprocal = (((0xffff*0xff)<<7)+(alpha>>1))/alpha; - - tRNS[i] = alphabyte; - if (alphabyte < 255) - num_trans = i+1; - - if (channels >= 3) /* RGB */ - { - palette[i].blue = png_unpremultiply(entry[afirst + (2 ^ bgr)], - alpha, reciprocal); - palette[i].green = png_unpremultiply(entry[afirst + 1], alpha, - reciprocal); - palette[i].red = png_unpremultiply(entry[afirst + bgr], alpha, - reciprocal); - } - - else /* gray */ - palette[i].blue = palette[i].red = palette[i].green = - png_unpremultiply(entry[afirst], alpha, reciprocal); - } - } - - else /* Color-map has sRGB values */ - { - png_const_bytep entry = png_voidcast(png_const_bytep, cmap); - - entry += (unsigned int)i * channels; - - switch (channels) - { - case 4: - tRNS[i] = entry[afirst ? 0 : 3]; - if (tRNS[i] < 255) - num_trans = i+1; - /* FALLTHROUGH */ - case 3: - palette[i].blue = entry[afirst + (2 ^ bgr)]; - palette[i].green = entry[afirst + 1]; - palette[i].red = entry[afirst + bgr]; - break; - - case 2: - tRNS[i] = entry[1 ^ afirst]; - if (tRNS[i] < 255) - num_trans = i+1; - /* FALLTHROUGH */ - case 1: - palette[i].blue = palette[i].red = palette[i].green = - entry[afirst]; - break; - - default: - break; - } - } - } - -# ifdef afirst -# undef afirst -# endif -# ifdef bgr -# undef bgr -# endif - - png_set_PLTE(image->opaque->png_ptr, image->opaque->info_ptr, palette, - entries); - - if (num_trans > 0) - png_set_tRNS(image->opaque->png_ptr, image->opaque->info_ptr, tRNS, - num_trans, NULL); - - image->colormap_entries = (png_uint_32)entries; -} - -static int -png_image_write_main(png_voidp argument) -{ - png_image_write_control *display = png_voidcast(png_image_write_control*, - argument); - png_imagep image = display->image; - png_structrp png_ptr = image->opaque->png_ptr; - png_inforp info_ptr = image->opaque->info_ptr; - png_uint_32 format = image->format; - - /* The following four ints are actually booleans */ - int colormap = (format & PNG_FORMAT_FLAG_COLORMAP); - int linear = !colormap && (format & PNG_FORMAT_FLAG_LINEAR); /* input */ - int alpha = !colormap && (format & PNG_FORMAT_FLAG_ALPHA); - int write_16bit = linear && (display->convert_to_8bit == 0); - -# ifdef PNG_BENIGN_ERRORS_SUPPORTED - /* Make sure we error out on any bad situation */ - png_set_benign_errors(png_ptr, 0/*error*/); -# endif - - /* Default the 'row_stride' parameter if required, also check the row stride - * and total image size to ensure that they are within the system limits. - */ - { - const unsigned int channels = PNG_IMAGE_PIXEL_CHANNELS(image->format); - - if (image->width <= 0x7fffffffU/channels) /* no overflow */ - { - png_uint_32 check; - const png_uint_32 png_row_stride = image->width * channels; - - if (display->row_stride == 0) - display->row_stride = (png_int_32)/*SAFE*/png_row_stride; - - if (display->row_stride < 0) - check = (png_uint_32)(-display->row_stride); - - else - check = (png_uint_32)display->row_stride; - - if (check >= png_row_stride) - { - /* Now check for overflow of the image buffer calculation; this - * limits the whole image size to 32 bits for API compatibility with - * the current, 32-bit, PNG_IMAGE_BUFFER_SIZE macro. - */ - if (image->height > 0xffffffffU/png_row_stride) - png_error(image->opaque->png_ptr, "memory image too large"); - } - - else - png_error(image->opaque->png_ptr, "supplied row stride too small"); - } - - else - png_error(image->opaque->png_ptr, "image row stride too large"); - } - - /* Set the required transforms then write the rows in the correct order. */ - if ((format & PNG_FORMAT_FLAG_COLORMAP) != 0) - { - if (display->colormap != NULL && image->colormap_entries > 0) - { - png_uint_32 entries = image->colormap_entries; - - png_set_IHDR(png_ptr, info_ptr, image->width, image->height, - entries > 16 ? 8 : (entries > 4 ? 4 : (entries > 2 ? 2 : 1)), - PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE, - PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - png_image_set_PLTE(display); - } - - else - png_error(image->opaque->png_ptr, - "no color-map for color-mapped image"); - } - - else - png_set_IHDR(png_ptr, info_ptr, image->width, image->height, - write_16bit ? 16 : 8, - ((format & PNG_FORMAT_FLAG_COLOR) ? PNG_COLOR_MASK_COLOR : 0) + - ((format & PNG_FORMAT_FLAG_ALPHA) ? PNG_COLOR_MASK_ALPHA : 0), - PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); - - /* Counter-intuitively the data transformations must be called *after* - * png_write_info, not before as in the read code, but the 'set' functions - * must still be called before. Just set the color space information, never - * write an interlaced image. - */ - - if (write_16bit != 0) - { - /* The gamma here is 1.0 (linear) and the cHRM chunk matches sRGB. */ - png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_LINEAR); - - if ((image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB) == 0) - png_set_cHRM_fixed(png_ptr, info_ptr, - /* color x y */ - /* white */ 31270, 32900, - /* red */ 64000, 33000, - /* green */ 30000, 60000, - /* blue */ 15000, 6000 - ); - } - - else if ((image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB) == 0) - png_set_sRGB(png_ptr, info_ptr, PNG_sRGB_INTENT_PERCEPTUAL); - - /* Else writing an 8-bit file and the *colors* aren't sRGB, but the 8-bit - * space must still be gamma encoded. - */ - else - png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE); - - /* Write the file header. */ - png_write_info(png_ptr, info_ptr); - - /* Now set up the data transformations (*after* the header is written), - * remove the handled transformations from the 'format' flags for checking. - * - * First check for a little endian system if writing 16-bit files. - */ - if (write_16bit != 0) - { - PNG_CONST png_uint_16 le = 0x0001; - - if ((*(png_const_bytep) & le) != 0) - png_set_swap(png_ptr); - } - -# ifdef PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED - if ((format & PNG_FORMAT_FLAG_BGR) != 0) - { - if (colormap == 0 && (format & PNG_FORMAT_FLAG_COLOR) != 0) - png_set_bgr(png_ptr); - format &= ~PNG_FORMAT_FLAG_BGR; - } -# endif - -# ifdef PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED - if ((format & PNG_FORMAT_FLAG_AFIRST) != 0) - { - if (colormap == 0 && (format & PNG_FORMAT_FLAG_ALPHA) != 0) - png_set_swap_alpha(png_ptr); - format &= ~PNG_FORMAT_FLAG_AFIRST; - } -# endif - - /* If there are 16 or fewer color-map entries we wrote a lower bit depth - * above, but the application data is still byte packed. - */ - if (colormap != 0 && image->colormap_entries <= 16) - png_set_packing(png_ptr); - - /* That should have handled all (both) the transforms. */ - if ((format & ~(png_uint_32)(PNG_FORMAT_FLAG_COLOR | PNG_FORMAT_FLAG_LINEAR | - PNG_FORMAT_FLAG_ALPHA | PNG_FORMAT_FLAG_COLORMAP)) != 0) - png_error(png_ptr, "png_write_image: unsupported transformation"); - - { - png_const_bytep row = png_voidcast(png_const_bytep, display->buffer); - ptrdiff_t row_bytes = display->row_stride; - - if (linear != 0) - row_bytes *= (sizeof (png_uint_16)); - - if (row_bytes < 0) - row += (image->height-1) * (-row_bytes); - - display->first_row = row; - display->row_bytes = row_bytes; - } - - /* Apply 'fast' options if the flag is set. */ - if ((image->flags & PNG_IMAGE_FLAG_FAST) != 0) - { - png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, PNG_NO_FILTERS); - /* NOTE: determined by experiment using pngstest, this reflects some - * balance between the time to write the image once and the time to read - * it about 50 times. The speed-up in pngstest was about 10-20% of the - * total (user) time on a heavily loaded system. - */ -# ifdef PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED - png_set_compression_level(png_ptr, 3); -# endif - } - - /* Check for the cases that currently require a pre-transform on the row - * before it is written. This only applies when the input is 16-bit and - * either there is an alpha channel or it is converted to 8-bit. - */ - if ((linear != 0 && alpha != 0 ) || - (colormap == 0 && display->convert_to_8bit != 0)) - { - png_bytep row = png_voidcast(png_bytep, png_malloc(png_ptr, - png_get_rowbytes(png_ptr, info_ptr))); - int result; - - display->local_row = row; - if (write_16bit != 0) - result = png_safe_execute(image, png_write_image_16bit, display); - else - result = png_safe_execute(image, png_write_image_8bit, display); - display->local_row = NULL; - - png_free(png_ptr, row); - - /* Skip the 'write_end' on error: */ - if (result == 0) - return 0; - } - - /* Otherwise this is the case where the input is in a format currently - * supported by the rest of the libpng write code; call it directly. - */ - else - { - png_const_bytep row = png_voidcast(png_const_bytep, display->first_row); - ptrdiff_t row_bytes = display->row_bytes; - png_uint_32 y = image->height; - - for (; y > 0; --y) - { - png_write_row(png_ptr, row); - row += row_bytes; - } - } - - png_write_end(png_ptr, info_ptr); - return 1; -} - - -static void (PNGCBAPI -image_memory_write)(png_structp png_ptr, png_bytep/*const*/ data, - png_size_t size) -{ - png_image_write_control *display = png_voidcast(png_image_write_control*, - png_ptr->io_ptr/*backdoor: png_get_io_ptr(png_ptr)*/); - const png_alloc_size_t ob = display->output_bytes; - - /* Check for overflow; this should never happen: */ - if (size <= ((png_alloc_size_t)-1) - ob) - { - /* I don't think libpng ever does this, but just in case: */ - if (size > 0) - { - if (display->memory_bytes >= ob+size) /* writing */ - memcpy(display->memory+ob, data, size); - - /* Always update the size: */ - display->output_bytes = ob+size; - } - } - - else - png_error(png_ptr, "png_image_write_to_memory: PNG too big"); -} - -static void (PNGCBAPI -image_memory_flush)(png_structp png_ptr) -{ - PNG_UNUSED(png_ptr) -} - -static int -png_image_write_memory(png_voidp argument) -{ - png_image_write_control *display = png_voidcast(png_image_write_control*, - argument); - - /* The rest of the memory-specific init and write_main in an error protected - * environment. This case needs to use callbacks for the write operations - * since libpng has no built in support for writing to memory. - */ - png_set_write_fn(display->image->opaque->png_ptr, display/*io_ptr*/, - image_memory_write, image_memory_flush); - - return png_image_write_main(display); -} - -int PNGAPI -png_image_write_to_memory(png_imagep image, void *memory, - png_alloc_size_t * PNG_RESTRICT memory_bytes, int convert_to_8bit, - const void *buffer, png_int_32 row_stride, const void *colormap) -{ - /* Write the image to the given buffer, or count the bytes if it is NULL */ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - if (memory_bytes != NULL && buffer != NULL) - { - /* This is to give the caller an easier error detection in the NULL - * case and guard against uninitialized variable problems: - */ - if (memory == NULL) - *memory_bytes = 0; - - if (png_image_write_init(image) != 0) - { - png_image_write_control display; - int result; - - memset(&display, 0, (sizeof display)); - display.image = image; - display.buffer = buffer; - display.row_stride = row_stride; - display.colormap = colormap; - display.convert_to_8bit = convert_to_8bit; - display.memory = png_voidcast(png_bytep, memory); - display.memory_bytes = *memory_bytes; - display.output_bytes = 0; - - result = png_safe_execute(image, png_image_write_memory, &display); - png_image_free(image); - - /* write_memory returns true even if we ran out of buffer. */ - if (result) - { - /* On out-of-buffer this function returns '0' but still updates - * memory_bytes: - */ - if (memory != NULL && display.output_bytes > *memory_bytes) - result = 0; - - *memory_bytes = display.output_bytes; - } - - return result; - } - - else - return 0; - } - - else - return png_image_error(image, - "png_image_write_to_memory: invalid argument"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_write_to_memory: incorrect PNG_IMAGE_VERSION"); - - else - return 0; -} - -#ifdef PNG_SIMPLIFIED_WRITE_STDIO_SUPPORTED -int PNGAPI -png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit, - const void *buffer, png_int_32 row_stride, const void *colormap) -{ - /* Write the image to the given (FILE*). */ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - if (file != NULL && buffer != NULL) - { - if (png_image_write_init(image) != 0) - { - png_image_write_control display; - int result; - - /* This is slightly evil, but png_init_io doesn't do anything other - * than this and we haven't changed the standard IO functions so - * this saves a 'safe' function. - */ - image->opaque->png_ptr->io_ptr = file; - - memset(&display, 0, (sizeof display)); - display.image = image; - display.buffer = buffer; - display.row_stride = row_stride; - display.colormap = colormap; - display.convert_to_8bit = convert_to_8bit; - - result = png_safe_execute(image, png_image_write_main, &display); - png_image_free(image); - return result; - } - - else - return 0; - } - - else - return png_image_error(image, - "png_image_write_to_stdio: invalid argument"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_write_to_stdio: incorrect PNG_IMAGE_VERSION"); - - else - return 0; -} - -int PNGAPI -png_image_write_to_file(png_imagep image, const char *file_name, - int convert_to_8bit, const void *buffer, png_int_32 row_stride, - const void *colormap) -{ - /* Write the image to the named file. */ - if (image != NULL && image->version == PNG_IMAGE_VERSION) - { - if (file_name != NULL && buffer != NULL) - { - FILE *fp = fopen(file_name, "wb"); - - if (fp != NULL) - { - if (png_image_write_to_stdio(image, fp, convert_to_8bit, buffer, - row_stride, colormap) != 0) - { - int error; /* from fflush/fclose */ - - /* Make sure the file is flushed correctly. */ - if (fflush(fp) == 0 && ferror(fp) == 0) - { - if (fclose(fp) == 0) - return 1; - - error = errno; /* from fclose */ - } - - else - { - error = errno; /* from fflush or ferror */ - (void)fclose(fp); - } - - (void)remove(file_name); - /* The image has already been cleaned up; this is just used to - * set the error (because the original write succeeded). - */ - return png_image_error(image, strerror(error)); - } - - else - { - /* Clean up: just the opened file. */ - (void)fclose(fp); - (void)remove(file_name); - return 0; - } - } - - else - return png_image_error(image, strerror(errno)); - } - - else - return png_image_error(image, - "png_image_write_to_file: invalid argument"); - } - - else if (image != NULL) - return png_image_error(image, - "png_image_write_to_file: incorrect PNG_IMAGE_VERSION"); - - else - return 0; -} -#endif /* SIMPLIFIED_WRITE_STDIO */ -#endif /* SIMPLIFIED_WRITE */ -#endif /* WRITE */ diff --git a/project/jni/png/pngwtran.c b/project/jni/png/pngwtran.c deleted file mode 100644 index 377b43e5c..000000000 --- a/project/jni/png/pngwtran.c +++ /dev/null @@ -1,576 +0,0 @@ - -/* pngwtran.c - transforms the data in a row for PNG writers - * - * Last changed in libpng 1.6.26 [October 20, 2016] - * Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#include "pngpriv.h" - -#ifdef PNG_WRITE_SUPPORTED -#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED - -#ifdef PNG_WRITE_PACK_SUPPORTED -/* Pack pixels into bytes. Pass the true bit depth in bit_depth. The - * row_info bit depth should be 8 (one pixel per byte). The channels - * should be 1 (this only happens on grayscale and paletted images). - */ -static void -png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth) -{ - png_debug(1, "in png_do_pack"); - - if (row_info->bit_depth == 8 && - row_info->channels == 1) - { - switch ((int)bit_depth) - { - case 1: - { - png_bytep sp, dp; - int mask, v; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - sp = row; - dp = row; - mask = 0x80; - v = 0; - - for (i = 0; i < row_width; i++) - { - if (*sp != 0) - v |= mask; - - sp++; - - if (mask > 1) - mask >>= 1; - - else - { - mask = 0x80; - *dp = (png_byte)v; - dp++; - v = 0; - } - } - - if (mask != 0x80) - *dp = (png_byte)v; - - break; - } - - case 2: - { - png_bytep sp, dp; - unsigned int shift; - int v; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - sp = row; - dp = row; - shift = 6; - v = 0; - - for (i = 0; i < row_width; i++) - { - png_byte value; - - value = (png_byte)(*sp & 0x03); - v |= (value << shift); - - if (shift == 0) - { - shift = 6; - *dp = (png_byte)v; - dp++; - v = 0; - } - - else - shift -= 2; - - sp++; - } - - if (shift != 6) - *dp = (png_byte)v; - - break; - } - - case 4: - { - png_bytep sp, dp; - unsigned int shift; - int v; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - sp = row; - dp = row; - shift = 4; - v = 0; - - for (i = 0; i < row_width; i++) - { - png_byte value; - - value = (png_byte)(*sp & 0x0f); - v |= (value << shift); - - if (shift == 0) - { - shift = 4; - *dp = (png_byte)v; - dp++; - v = 0; - } - - else - shift -= 4; - - sp++; - } - - if (shift != 4) - *dp = (png_byte)v; - - break; - } - - default: - break; - } - - row_info->bit_depth = (png_byte)bit_depth; - row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels); - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, - row_info->width); - } -} -#endif - -#ifdef PNG_WRITE_SHIFT_SUPPORTED -/* Shift pixel values to take advantage of whole range. Pass the - * true number of bits in bit_depth. The row should be packed - * according to row_info->bit_depth. Thus, if you had a row of - * bit depth 4, but the pixels only had values from 0 to 7, you - * would pass 3 as bit_depth, and this routine would translate the - * data to 0 to 15. - */ -static void -png_do_shift(png_row_infop row_info, png_bytep row, - png_const_color_8p bit_depth) -{ - png_debug(1, "in png_do_shift"); - - if (row_info->color_type != PNG_COLOR_TYPE_PALETTE) - { - int shift_start[4], shift_dec[4]; - unsigned int channels = 0; - - if ((row_info->color_type & PNG_COLOR_MASK_COLOR) != 0) - { - shift_start[channels] = row_info->bit_depth - bit_depth->red; - shift_dec[channels] = bit_depth->red; - channels++; - - shift_start[channels] = row_info->bit_depth - bit_depth->green; - shift_dec[channels] = bit_depth->green; - channels++; - - shift_start[channels] = row_info->bit_depth - bit_depth->blue; - shift_dec[channels] = bit_depth->blue; - channels++; - } - - else - { - shift_start[channels] = row_info->bit_depth - bit_depth->gray; - shift_dec[channels] = bit_depth->gray; - channels++; - } - - if ((row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0) - { - shift_start[channels] = row_info->bit_depth - bit_depth->alpha; - shift_dec[channels] = bit_depth->alpha; - channels++; - } - - /* With low row depths, could only be grayscale, so one channel */ - if (row_info->bit_depth < 8) - { - png_bytep bp = row; - png_size_t i; - unsigned int mask; - png_size_t row_bytes = row_info->rowbytes; - - if (bit_depth->gray == 1 && row_info->bit_depth == 2) - mask = 0x55; - - else if (row_info->bit_depth == 4 && bit_depth->gray == 3) - mask = 0x11; - - else - mask = 0xff; - - for (i = 0; i < row_bytes; i++, bp++) - { - int j; - unsigned int v, out; - - v = *bp; - out = 0; - - for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0]) - { - if (j > 0) - out |= v << j; - - else - out |= (v >> (-j)) & mask; - } - - *bp = (png_byte)(out & 0xff); - } - } - - else if (row_info->bit_depth == 8) - { - png_bytep bp = row; - png_uint_32 i; - png_uint_32 istop = channels * row_info->width; - - for (i = 0; i < istop; i++, bp++) - { - - const unsigned int c = i%channels; - int j; - unsigned int v, out; - - v = *bp; - out = 0; - - for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c]) - { - if (j > 0) - out |= v << j; - - else - out |= v >> (-j); - } - - *bp = (png_byte)(out & 0xff); - } - } - - else - { - png_bytep bp; - png_uint_32 i; - png_uint_32 istop = channels * row_info->width; - - for (bp = row, i = 0; i < istop; i++) - { - const unsigned int c = i%channels; - int j; - unsigned int value, v; - - v = png_get_uint_16(bp); - value = 0; - - for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c]) - { - if (j > 0) - value |= v << j; - - else - value |= v >> (-j); - } - *bp++ = (png_byte)((value >> 8) & 0xff); - *bp++ = (png_byte)(value & 0xff); - } - } - } -} -#endif - -#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED -static void -png_do_write_swap_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_write_swap_alpha"); - - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This converts from ARGB to RGBA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save; - } - } - -#ifdef PNG_WRITE_16BIT_SUPPORTED - else - { - /* This converts from AARRGGBB to RRGGBBAA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save[2]; - save[0] = *(sp++); - save[1] = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save[0]; - *(dp++) = save[1]; - } - } -#endif /* WRITE_16BIT */ - } - - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This converts from AG to GA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save; - } - } - -#ifdef PNG_WRITE_16BIT_SUPPORTED - else - { - /* This converts from AAGG to GGAA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - png_byte save[2]; - save[0] = *(sp++); - save[1] = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = save[0]; - *(dp++) = save[1]; - } - } -#endif /* WRITE_16BIT */ - } - } -} -#endif - -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED -static void -png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) -{ - png_debug(1, "in png_do_write_invert_alpha"); - - { - if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This inverts the alpha channel in RGBA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - /* Does nothing - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - */ - sp+=3; dp = sp; - *dp = (png_byte)(255 - *(sp++)); - } - } - -#ifdef PNG_WRITE_16BIT_SUPPORTED - else - { - /* This inverts the alpha channel in RRGGBBAA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - /* Does nothing - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - *(dp++) = *(sp++); - */ - sp+=6; dp = sp; - *(dp++) = (png_byte)(255 - *(sp++)); - *dp = (png_byte)(255 - *(sp++)); - } - } -#endif /* WRITE_16BIT */ - } - - else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) - { - if (row_info->bit_depth == 8) - { - /* This inverts the alpha channel in GA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - *(dp++) = *(sp++); - *(dp++) = (png_byte)(255 - *(sp++)); - } - } - -#ifdef PNG_WRITE_16BIT_SUPPORTED - else - { - /* This inverts the alpha channel in GGAA */ - png_bytep sp, dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - for (i = 0, sp = dp = row; i < row_width; i++) - { - /* Does nothing - *(dp++) = *(sp++); - *(dp++) = *(sp++); - */ - sp+=2; dp = sp; - *(dp++) = (png_byte)(255 - *(sp++)); - *dp = (png_byte)(255 - *(sp++)); - } - } -#endif /* WRITE_16BIT */ - } - } -} -#endif - -/* Transform the data according to the user's wishes. The order of - * transformations is significant. - */ -void /* PRIVATE */ -png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info) -{ - png_debug(1, "in png_do_write_transformations"); - - if (png_ptr == NULL) - return; - -#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED - if ((png_ptr->transformations & PNG_USER_TRANSFORM) != 0) - if (png_ptr->write_user_transform_fn != NULL) - (*(png_ptr->write_user_transform_fn)) /* User write transform - function */ - (png_ptr, /* png_ptr */ - row_info, /* row_info: */ - /* png_uint_32 width; width of row */ - /* png_size_t rowbytes; number of bytes in row */ - /* png_byte color_type; color type of pixels */ - /* png_byte bit_depth; bit depth of samples */ - /* png_byte channels; number of channels (1-4) */ - /* png_byte pixel_depth; bits per pixel (depth*channels) */ - png_ptr->row_buf + 1); /* start of pixel data for row */ -#endif - -#ifdef PNG_WRITE_FILLER_SUPPORTED - if ((png_ptr->transformations & PNG_FILLER) != 0) - png_do_strip_channel(row_info, png_ptr->row_buf + 1, - !(png_ptr->flags & PNG_FLAG_FILLER_AFTER)); -#endif - -#ifdef PNG_WRITE_PACKSWAP_SUPPORTED - if ((png_ptr->transformations & PNG_PACKSWAP) != 0) - png_do_packswap(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_WRITE_PACK_SUPPORTED - if ((png_ptr->transformations & PNG_PACK) != 0) - png_do_pack(row_info, png_ptr->row_buf + 1, - (png_uint_32)png_ptr->bit_depth); -#endif - -#ifdef PNG_WRITE_SWAP_SUPPORTED -# ifdef PNG_16BIT_SUPPORTED - if ((png_ptr->transformations & PNG_SWAP_BYTES) != 0) - png_do_swap(row_info, png_ptr->row_buf + 1); -# endif -#endif - -#ifdef PNG_WRITE_SHIFT_SUPPORTED - if ((png_ptr->transformations & PNG_SHIFT) != 0) - png_do_shift(row_info, png_ptr->row_buf + 1, - &(png_ptr->shift)); -#endif - -#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_SWAP_ALPHA) != 0) - png_do_write_swap_alpha(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED - if ((png_ptr->transformations & PNG_INVERT_ALPHA) != 0) - png_do_write_invert_alpha(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_WRITE_BGR_SUPPORTED - if ((png_ptr->transformations & PNG_BGR) != 0) - png_do_bgr(row_info, png_ptr->row_buf + 1); -#endif - -#ifdef PNG_WRITE_INVERT_SUPPORTED - if ((png_ptr->transformations & PNG_INVERT_MONO) != 0) - png_do_invert(row_info, png_ptr->row_buf + 1); -#endif -} -#endif /* WRITE_TRANSFORMS */ -#endif /* WRITE */ diff --git a/project/jni/png/pngwutil.c b/project/jni/png/pngwutil.c deleted file mode 100644 index 0d4fb1336..000000000 --- a/project/jni/png/pngwutil.c +++ /dev/null @@ -1,2784 +0,0 @@ - -/* pngwutil.c - utilities to write a PNG file - * - * Last changed in libpng 1.6.32 [August 24, 2017] - * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson - * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) - * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) - * - * This code is released under the libpng license. - * For conditions of distribution and use, see the disclaimer - * and license in png.h - */ - -#include "pngpriv.h" - -#ifdef PNG_WRITE_SUPPORTED - -#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED -/* Place a 32-bit number into a buffer in PNG byte order. We work - * with unsigned numbers for convenience, although one supported - * ancillary chunk uses signed (two's complement) numbers. - */ -void PNGAPI -png_save_uint_32(png_bytep buf, png_uint_32 i) -{ - buf[0] = (png_byte)((i >> 24) & 0xffU); - buf[1] = (png_byte)((i >> 16) & 0xffU); - buf[2] = (png_byte)((i >> 8) & 0xffU); - buf[3] = (png_byte)( i & 0xffU); -} - -/* Place a 16-bit number into a buffer in PNG byte order. - * The parameter is declared unsigned int, not png_uint_16, - * just to avoid potential problems on pre-ANSI C compilers. - */ -void PNGAPI -png_save_uint_16(png_bytep buf, unsigned int i) -{ - buf[0] = (png_byte)((i >> 8) & 0xffU); - buf[1] = (png_byte)( i & 0xffU); -} -#endif - -/* Simple function to write the signature. If we have already written - * the magic bytes of the signature, or more likely, the PNG stream is - * being embedded into another stream and doesn't need its own signature, - * we should call png_set_sig_bytes() to tell libpng how many of the - * bytes have already been written. - */ -void PNGAPI -png_write_sig(png_structrp png_ptr) -{ - png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10}; - -#ifdef PNG_IO_STATE_SUPPORTED - /* Inform the I/O callback that the signature is being written */ - png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE; -#endif - - /* Write the rest of the 8 byte signature */ - png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes], - (png_size_t)(8 - png_ptr->sig_bytes)); - - if (png_ptr->sig_bytes < 3) - png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE; -} - -/* Write the start of a PNG chunk. The type is the chunk type. - * The total_length is the sum of the lengths of all the data you will be - * passing in png_write_chunk_data(). - */ -static void -png_write_chunk_header(png_structrp png_ptr, png_uint_32 chunk_name, - png_uint_32 length) -{ - png_byte buf[8]; - -#if defined(PNG_DEBUG) && (PNG_DEBUG > 0) - PNG_CSTRING_FROM_CHUNK(buf, chunk_name); - png_debug2(0, "Writing %s chunk, length = %lu", buf, (unsigned long)length); -#endif - - if (png_ptr == NULL) - return; - -#ifdef PNG_IO_STATE_SUPPORTED - /* Inform the I/O callback that the chunk header is being written. - * PNG_IO_CHUNK_HDR requires a single I/O call. - */ - png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR; -#endif - - /* Write the length and the chunk name */ - png_save_uint_32(buf, length); - png_save_uint_32(buf + 4, chunk_name); - png_write_data(png_ptr, buf, 8); - - /* Put the chunk name into png_ptr->chunk_name */ - png_ptr->chunk_name = chunk_name; - - /* Reset the crc and run it over the chunk name */ - png_reset_crc(png_ptr); - - png_calculate_crc(png_ptr, buf + 4, 4); - -#ifdef PNG_IO_STATE_SUPPORTED - /* Inform the I/O callback that chunk data will (possibly) be written. - * PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls. - */ - png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA; -#endif -} - -void PNGAPI -png_write_chunk_start(png_structrp png_ptr, png_const_bytep chunk_string, - png_uint_32 length) -{ - png_write_chunk_header(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), length); -} - -/* Write the data of a PNG chunk started with png_write_chunk_header(). - * Note that multiple calls to this function are allowed, and that the - * sum of the lengths from these calls *must* add up to the total_length - * given to png_write_chunk_header(). - */ -void PNGAPI -png_write_chunk_data(png_structrp png_ptr, png_const_bytep data, - png_size_t length) -{ - /* Write the data, and run the CRC over it */ - if (png_ptr == NULL) - return; - - if (data != NULL && length > 0) - { - png_write_data(png_ptr, data, length); - - /* Update the CRC after writing the data, - * in case the user I/O routine alters it. - */ - png_calculate_crc(png_ptr, data, length); - } -} - -/* Finish a chunk started with png_write_chunk_header(). */ -void PNGAPI -png_write_chunk_end(png_structrp png_ptr) -{ - png_byte buf[4]; - - if (png_ptr == NULL) return; - -#ifdef PNG_IO_STATE_SUPPORTED - /* Inform the I/O callback that the chunk CRC is being written. - * PNG_IO_CHUNK_CRC requires a single I/O function call. - */ - png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC; -#endif - - /* Write the crc in a single operation */ - png_save_uint_32(buf, png_ptr->crc); - - png_write_data(png_ptr, buf, (png_size_t)4); -} - -/* Write a PNG chunk all at once. The type is an array of ASCII characters - * representing the chunk name. The array must be at least 4 bytes in - * length, and does not need to be null terminated. To be safe, pass the - * pre-defined chunk names here, and if you need a new one, define it - * where the others are defined. The length is the length of the data. - * All the data must be present. If that is not possible, use the - * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end() - * functions instead. - */ -static void -png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name, - png_const_bytep data, png_size_t length) -{ - if (png_ptr == NULL) - return; - - /* On 64-bit architectures 'length' may not fit in a png_uint_32. */ - if (length > PNG_UINT_31_MAX) - png_error(png_ptr, "length exceeds PNG maximum"); - - png_write_chunk_header(png_ptr, chunk_name, (png_uint_32)length); - png_write_chunk_data(png_ptr, data, length); - png_write_chunk_end(png_ptr); -} - -/* This is the API that calls the internal function above. */ -void PNGAPI -png_write_chunk(png_structrp png_ptr, png_const_bytep chunk_string, - png_const_bytep data, png_size_t length) -{ - png_write_complete_chunk(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), data, - length); -} - -/* This is used below to find the size of an image to pass to png_deflate_claim, - * so it only needs to be accurate if the size is less than 16384 bytes (the - * point at which a lower LZ window size can be used.) - */ -static png_alloc_size_t -png_image_size(png_structrp png_ptr) -{ - /* Only return sizes up to the maximum of a png_uint_32; do this by limiting - * the width and height used to 15 bits. - */ - png_uint_32 h = png_ptr->height; - - if (png_ptr->rowbytes < 32768 && h < 32768) - { - if (png_ptr->interlaced != 0) - { - /* Interlacing makes the image larger because of the replication of - * both the filter byte and the padding to a byte boundary. - */ - png_uint_32 w = png_ptr->width; - unsigned int pd = png_ptr->pixel_depth; - png_alloc_size_t cb_base; - int pass; - - for (cb_base=0, pass=0; pass<=6; ++pass) - { - png_uint_32 pw = PNG_PASS_COLS(w, pass); - - if (pw > 0) - cb_base += (PNG_ROWBYTES(pd, pw)+1) * PNG_PASS_ROWS(h, pass); - } - - return cb_base; - } - - else - return (png_ptr->rowbytes+1) * h; - } - - else - return 0xffffffffU; -} - -#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED - /* This is the code to hack the first two bytes of the deflate stream (the - * deflate header) to correct the windowBits value to match the actual data - * size. Note that the second argument is the *uncompressed* size but the - * first argument is the *compressed* data (and it must be deflate - * compressed.) - */ -static void -optimize_cmf(png_bytep data, png_alloc_size_t data_size) -{ - /* Optimize the CMF field in the zlib stream. The resultant zlib stream is - * still compliant to the stream specification. - */ - if (data_size <= 16384) /* else windowBits must be 15 */ - { - unsigned int z_cmf = data[0]; /* zlib compression method and flags */ - - if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70) - { - unsigned int z_cinfo; - unsigned int half_z_window_size; - - z_cinfo = z_cmf >> 4; - half_z_window_size = 1U << (z_cinfo + 7); - - if (data_size <= half_z_window_size) /* else no change */ - { - unsigned int tmp; - - do - { - half_z_window_size >>= 1; - --z_cinfo; - } - while (z_cinfo > 0 && data_size <= half_z_window_size); - - z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4); - - data[0] = (png_byte)z_cmf; - tmp = data[1] & 0xe0; - tmp += 0x1f - ((z_cmf << 8) + tmp) % 0x1f; - data[1] = (png_byte)tmp; - } - } - } -} -#endif /* WRITE_OPTIMIZE_CMF */ - -/* Initialize the compressor for the appropriate type of compression. */ -static int -png_deflate_claim(png_structrp png_ptr, png_uint_32 owner, - png_alloc_size_t data_size) -{ - if (png_ptr->zowner != 0) - { -#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED) - char msg[64]; - - PNG_STRING_FROM_CHUNK(msg, owner); - msg[4] = ':'; - msg[5] = ' '; - PNG_STRING_FROM_CHUNK(msg+6, png_ptr->zowner); - /* So the message that results is " using zstream"; this is an - * internal error, but is very useful for debugging. i18n requirements - * are minimal. - */ - (void)png_safecat(msg, (sizeof msg), 10, " using zstream"); -#endif -#if PNG_RELEASE_BUILD - png_warning(png_ptr, msg); - - /* Attempt sane error recovery */ - if (png_ptr->zowner == png_IDAT) /* don't steal from IDAT */ - { - png_ptr->zstream.msg = PNGZ_MSG_CAST("in use by IDAT"); - return Z_STREAM_ERROR; - } - - png_ptr->zowner = 0; -#else - png_error(png_ptr, msg); -#endif - } - - { - int level = png_ptr->zlib_level; - int method = png_ptr->zlib_method; - int windowBits = png_ptr->zlib_window_bits; - int memLevel = png_ptr->zlib_mem_level; - int strategy; /* set below */ - int ret; /* zlib return code */ - - if (owner == png_IDAT) - { - if ((png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY) != 0) - strategy = png_ptr->zlib_strategy; - - else if (png_ptr->do_filter != PNG_FILTER_NONE) - strategy = PNG_Z_DEFAULT_STRATEGY; - - else - strategy = PNG_Z_DEFAULT_NOFILTER_STRATEGY; - } - - else - { -#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED - level = png_ptr->zlib_text_level; - method = png_ptr->zlib_text_method; - windowBits = png_ptr->zlib_text_window_bits; - memLevel = png_ptr->zlib_text_mem_level; - strategy = png_ptr->zlib_text_strategy; -#else - /* If customization is not supported the values all come from the - * IDAT values except for the strategy, which is fixed to the - * default. (This is the pre-1.6.0 behavior too, although it was - * implemented in a very different way.) - */ - strategy = Z_DEFAULT_STRATEGY; -#endif - } - - /* Adjust 'windowBits' down if larger than 'data_size'; to stop this - * happening just pass 32768 as the data_size parameter. Notice that zlib - * requires an extra 262 bytes in the window in addition to the data to be - * able to see the whole of the data, so if data_size+262 takes us to the - * next windowBits size we need to fix up the value later. (Because even - * though deflate needs the extra window, inflate does not!) - */ - if (data_size <= 16384) - { - /* IMPLEMENTATION NOTE: this 'half_window_size' stuff is only here to - * work round a Microsoft Visual C misbehavior which, contrary to C-90, - * widens the result of the following shift to 64-bits if (and, - * apparently, only if) it is used in a test. - */ - unsigned int half_window_size = 1U << (windowBits-1); - - while (data_size + 262 <= half_window_size) - { - half_window_size >>= 1; - --windowBits; - } - } - - /* Check against the previous initialized values, if any. */ - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0 && - (png_ptr->zlib_set_level != level || - png_ptr->zlib_set_method != method || - png_ptr->zlib_set_window_bits != windowBits || - png_ptr->zlib_set_mem_level != memLevel || - png_ptr->zlib_set_strategy != strategy)) - { - if (deflateEnd(&png_ptr->zstream) != Z_OK) - png_warning(png_ptr, "deflateEnd failed (ignored)"); - - png_ptr->flags &= ~PNG_FLAG_ZSTREAM_INITIALIZED; - } - - /* For safety clear out the input and output pointers (currently zlib - * doesn't use them on Init, but it might in the future). - */ - png_ptr->zstream.next_in = NULL; - png_ptr->zstream.avail_in = 0; - png_ptr->zstream.next_out = NULL; - png_ptr->zstream.avail_out = 0; - - /* Now initialize if required, setting the new parameters, otherwise just - * do a simple reset to the previous parameters. - */ - if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) != 0) - ret = deflateReset(&png_ptr->zstream); - - else - { - ret = deflateInit2(&png_ptr->zstream, level, method, windowBits, - memLevel, strategy); - - if (ret == Z_OK) - png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED; - } - - /* The return code is from either deflateReset or deflateInit2; they have - * pretty much the same set of error codes. - */ - if (ret == Z_OK) - png_ptr->zowner = owner; - - else - png_zstream_error(png_ptr, ret); - - return ret; - } -} - -/* Clean up (or trim) a linked list of compression buffers. */ -void /* PRIVATE */ -png_free_buffer_list(png_structrp png_ptr, png_compression_bufferp *listp) -{ - png_compression_bufferp list = *listp; - - if (list != NULL) - { - *listp = NULL; - - do - { - png_compression_bufferp next = list->next; - - png_free(png_ptr, list); - list = next; - } - while (list != NULL); - } -} - -#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED -/* This pair of functions encapsulates the operation of (a) compressing a - * text string, and (b) issuing it later as a series of chunk data writes. - * The compression_state structure is shared context for these functions - * set up by the caller to allow access to the relevant local variables. - * - * compression_buffer (new in 1.6.0) is just a linked list of zbuffer_size - * temporary buffers. From 1.6.0 it is retained in png_struct so that it will - * be correctly freed in the event of a write error (previous implementations - * just leaked memory.) - */ -typedef struct -{ - png_const_bytep input; /* The uncompressed input data */ - png_alloc_size_t input_len; /* Its length */ - png_uint_32 output_len; /* Final compressed length */ - png_byte output[1024]; /* First block of output */ -} compression_state; - -static void -png_text_compress_init(compression_state *comp, png_const_bytep input, - png_alloc_size_t input_len) -{ - comp->input = input; - comp->input_len = input_len; - comp->output_len = 0; -} - -/* Compress the data in the compression state input */ -static int -png_text_compress(png_structrp png_ptr, png_uint_32 chunk_name, - compression_state *comp, png_uint_32 prefix_len) -{ - int ret; - - /* To find the length of the output it is necessary to first compress the - * input. The result is buffered rather than using the two-pass algorithm - * that is used on the inflate side; deflate is assumed to be slower and a - * PNG writer is assumed to have more memory available than a PNG reader. - * - * IMPLEMENTATION NOTE: the zlib API deflateBound() can be used to find an - * upper limit on the output size, but it is always bigger than the input - * size so it is likely to be more efficient to use this linked-list - * approach. - */ - ret = png_deflate_claim(png_ptr, chunk_name, comp->input_len); - - if (ret != Z_OK) - return ret; - - /* Set up the compression buffers, we need a loop here to avoid overflowing a - * uInt. Use ZLIB_IO_MAX to limit the input. The output is always limited - * by the output buffer size, so there is no need to check that. Since this - * is ANSI-C we know that an 'int', hence a uInt, is always at least 16 bits - * in size. - */ - { - png_compression_bufferp *end = &png_ptr->zbuffer_list; - png_alloc_size_t input_len = comp->input_len; /* may be zero! */ - png_uint_32 output_len; - - /* zlib updates these for us: */ - png_ptr->zstream.next_in = PNGZ_INPUT_CAST(comp->input); - png_ptr->zstream.avail_in = 0; /* Set below */ - png_ptr->zstream.next_out = comp->output; - png_ptr->zstream.avail_out = (sizeof comp->output); - - output_len = png_ptr->zstream.avail_out; - - do - { - uInt avail_in = ZLIB_IO_MAX; - - if (avail_in > input_len) - avail_in = (uInt)input_len; - - input_len -= avail_in; - - png_ptr->zstream.avail_in = avail_in; - - if (png_ptr->zstream.avail_out == 0) - { - png_compression_buffer *next; - - /* Chunk data is limited to 2^31 bytes in length, so the prefix - * length must be counted here. - */ - if (output_len + prefix_len > PNG_UINT_31_MAX) - { - ret = Z_MEM_ERROR; - break; - } - - /* Need a new (malloc'ed) buffer, but there may be one present - * already. - */ - next = *end; - if (next == NULL) - { - next = png_voidcast(png_compression_bufferp, png_malloc_base - (png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr))); - - if (next == NULL) - { - ret = Z_MEM_ERROR; - break; - } - - /* Link in this buffer (so that it will be freed later) */ - next->next = NULL; - *end = next; - } - - png_ptr->zstream.next_out = next->output; - png_ptr->zstream.avail_out = png_ptr->zbuffer_size; - output_len += png_ptr->zstream.avail_out; - - /* Move 'end' to the next buffer pointer. */ - end = &next->next; - } - - /* Compress the data */ - ret = deflate(&png_ptr->zstream, - input_len > 0 ? Z_NO_FLUSH : Z_FINISH); - - /* Claw back input data that was not consumed (because avail_in is - * reset above every time round the loop). - */ - input_len += png_ptr->zstream.avail_in; - png_ptr->zstream.avail_in = 0; /* safety */ - } - while (ret == Z_OK); - - /* There may be some space left in the last output buffer. This needs to - * be subtracted from output_len. - */ - output_len -= png_ptr->zstream.avail_out; - png_ptr->zstream.avail_out = 0; /* safety */ - comp->output_len = output_len; - - /* Now double check the output length, put in a custom message if it is - * too long. Otherwise ensure the z_stream::msg pointer is set to - * something. - */ - if (output_len + prefix_len >= PNG_UINT_31_MAX) - { - png_ptr->zstream.msg = PNGZ_MSG_CAST("compressed data too long"); - ret = Z_MEM_ERROR; - } - - else - png_zstream_error(png_ptr, ret); - - /* Reset zlib for another zTXt/iTXt or image data */ - png_ptr->zowner = 0; - - /* The only success case is Z_STREAM_END, input_len must be 0; if not this - * is an internal error. - */ - if (ret == Z_STREAM_END && input_len == 0) - { -#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED - /* Fix up the deflate header, if required */ - optimize_cmf(comp->output, comp->input_len); -#endif - /* But Z_OK is returned, not Z_STREAM_END; this allows the claim - * function above to return Z_STREAM_END on an error (though it never - * does in the current versions of zlib.) - */ - return Z_OK; - } - - else - return ret; - } -} - -/* Ship the compressed text out via chunk writes */ -static void -png_write_compressed_data_out(png_structrp png_ptr, compression_state *comp) -{ - png_uint_32 output_len = comp->output_len; - png_const_bytep output = comp->output; - png_uint_32 avail = (sizeof comp->output); - png_compression_buffer *next = png_ptr->zbuffer_list; - - for (;;) - { - if (avail > output_len) - avail = output_len; - - png_write_chunk_data(png_ptr, output, avail); - - output_len -= avail; - - if (output_len == 0 || next == NULL) - break; - - avail = png_ptr->zbuffer_size; - output = next->output; - next = next->next; - } - - /* This is an internal error; 'next' must have been NULL! */ - if (output_len > 0) - png_error(png_ptr, "error writing ancillary chunked compressed data"); -} -#endif /* WRITE_COMPRESSED_TEXT */ - -/* Write the IHDR chunk, and update the png_struct with the necessary - * information. Note that the rest of this code depends upon this - * information being correct. - */ -void /* PRIVATE */ -png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height, - int bit_depth, int color_type, int compression_type, int filter_type, - int interlace_type) -{ - png_byte buf[13]; /* Buffer to store the IHDR info */ - int is_invalid_depth; - - png_debug(1, "in png_write_IHDR"); - - /* Check that we have valid input data from the application info */ - switch (color_type) - { - case PNG_COLOR_TYPE_GRAY: - switch (bit_depth) - { - case 1: - case 2: - case 4: - case 8: -#ifdef PNG_WRITE_16BIT_SUPPORTED - case 16: -#endif - png_ptr->channels = 1; break; - - default: - png_error(png_ptr, - "Invalid bit depth for grayscale image"); - } - break; - - case PNG_COLOR_TYPE_RGB: - is_invalid_depth = (bit_depth != 8); -#ifdef PNG_WRITE_16BIT_SUPPORTED - is_invalid_depth = (is_invalid_depth && bit_depth != 16); -#endif - if (is_invalid_depth) - png_error(png_ptr, "Invalid bit depth for RGB image"); - - png_ptr->channels = 3; - break; - - case PNG_COLOR_TYPE_PALETTE: - switch (bit_depth) - { - case 1: - case 2: - case 4: - case 8: - png_ptr->channels = 1; - break; - - default: - png_error(png_ptr, "Invalid bit depth for paletted image"); - } - break; - - case PNG_COLOR_TYPE_GRAY_ALPHA: - is_invalid_depth = (bit_depth != 8); -#ifdef PNG_WRITE_16BIT_SUPPORTED - is_invalid_depth = (is_invalid_depth && bit_depth != 16); -#endif - if (is_invalid_depth) - png_error(png_ptr, "Invalid bit depth for grayscale+alpha image"); - - png_ptr->channels = 2; - break; - - case PNG_COLOR_TYPE_RGB_ALPHA: - is_invalid_depth = (bit_depth != 8); -#ifdef PNG_WRITE_16BIT_SUPPORTED - is_invalid_depth = (is_invalid_depth && bit_depth != 16); -#endif - if (is_invalid_depth) - png_error(png_ptr, "Invalid bit depth for RGBA image"); - - png_ptr->channels = 4; - break; - - default: - png_error(png_ptr, "Invalid image color type specified"); - } - - if (compression_type != PNG_COMPRESSION_TYPE_BASE) - { - png_warning(png_ptr, "Invalid compression type specified"); - compression_type = PNG_COMPRESSION_TYPE_BASE; - } - - /* Write filter_method 64 (intrapixel differencing) only if - * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and - * 2. Libpng did not write a PNG signature (this filter_method is only - * used in PNG datastreams that are embedded in MNG datastreams) and - * 3. The application called png_permit_mng_features with a mask that - * included PNG_FLAG_MNG_FILTER_64 and - * 4. The filter_method is 64 and - * 5. The color_type is RGB or RGBA - */ - if ( -#ifdef PNG_MNG_FEATURES_SUPPORTED - !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) != 0 && - ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) && - (color_type == PNG_COLOR_TYPE_RGB || - color_type == PNG_COLOR_TYPE_RGB_ALPHA) && - (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) && -#endif - filter_type != PNG_FILTER_TYPE_BASE) - { - png_warning(png_ptr, "Invalid filter type specified"); - filter_type = PNG_FILTER_TYPE_BASE; - } - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - if (interlace_type != PNG_INTERLACE_NONE && - interlace_type != PNG_INTERLACE_ADAM7) - { - png_warning(png_ptr, "Invalid interlace type specified"); - interlace_type = PNG_INTERLACE_ADAM7; - } -#else - interlace_type=PNG_INTERLACE_NONE; -#endif - - /* Save the relevant information */ - png_ptr->bit_depth = (png_byte)bit_depth; - png_ptr->color_type = (png_byte)color_type; - png_ptr->interlaced = (png_byte)interlace_type; -#ifdef PNG_MNG_FEATURES_SUPPORTED - png_ptr->filter_type = (png_byte)filter_type; -#endif - png_ptr->compression_type = (png_byte)compression_type; - png_ptr->width = width; - png_ptr->height = height; - - png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels); - png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width); - /* Set the usr info, so any transformations can modify it */ - png_ptr->usr_width = png_ptr->width; - png_ptr->usr_bit_depth = png_ptr->bit_depth; - png_ptr->usr_channels = png_ptr->channels; - - /* Pack the header information into the buffer */ - png_save_uint_32(buf, width); - png_save_uint_32(buf + 4, height); - buf[8] = (png_byte)bit_depth; - buf[9] = (png_byte)color_type; - buf[10] = (png_byte)compression_type; - buf[11] = (png_byte)filter_type; - buf[12] = (png_byte)interlace_type; - - /* Write the chunk */ - png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13); - - if ((png_ptr->do_filter) == PNG_NO_FILTERS) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE || - png_ptr->bit_depth < 8) - png_ptr->do_filter = PNG_FILTER_NONE; - - else - png_ptr->do_filter = PNG_ALL_FILTERS; - } - - png_ptr->mode = PNG_HAVE_IHDR; /* not READY_FOR_ZTXT */ -} - -/* Write the palette. We are careful not to trust png_color to be in the - * correct order for PNG, so people can redefine it to any convenient - * structure. - */ -void /* PRIVATE */ -png_write_PLTE(png_structrp png_ptr, png_const_colorp palette, - png_uint_32 num_pal) -{ - png_uint_32 max_palette_length, i; - png_const_colorp pal_ptr; - png_byte buf[3]; - - png_debug(1, "in png_write_PLTE"); - - max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ? - (1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH; - - if (( -#ifdef PNG_MNG_FEATURES_SUPPORTED - (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0 && -#endif - num_pal == 0) || num_pal > max_palette_length) - { - if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) - { - png_error(png_ptr, "Invalid number of colors in palette"); - } - - else - { - png_warning(png_ptr, "Invalid number of colors in palette"); - return; - } - } - - if ((png_ptr->color_type & PNG_COLOR_MASK_COLOR) == 0) - { - png_warning(png_ptr, - "Ignoring request to write a PLTE chunk in grayscale PNG"); - - return; - } - - png_ptr->num_palette = (png_uint_16)num_pal; - png_debug1(3, "num_palette = %d", png_ptr->num_palette); - - png_write_chunk_header(png_ptr, png_PLTE, (png_uint_32)(num_pal * 3)); -#ifdef PNG_POINTER_INDEXING_SUPPORTED - - for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++) - { - buf[0] = pal_ptr->red; - buf[1] = pal_ptr->green; - buf[2] = pal_ptr->blue; - png_write_chunk_data(png_ptr, buf, (png_size_t)3); - } - -#else - /* This is a little slower but some buggy compilers need to do this - * instead - */ - pal_ptr=palette; - - for (i = 0; i < num_pal; i++) - { - buf[0] = pal_ptr[i].red; - buf[1] = pal_ptr[i].green; - buf[2] = pal_ptr[i].blue; - png_write_chunk_data(png_ptr, buf, (png_size_t)3); - } - -#endif - png_write_chunk_end(png_ptr); - png_ptr->mode |= PNG_HAVE_PLTE; -} - -/* This is similar to png_text_compress, above, except that it does not require - * all of the data at once and, instead of buffering the compressed result, - * writes it as IDAT chunks. Unlike png_text_compress it *can* png_error out - * because it calls the write interface. As a result it does its own error - * reporting and does not return an error code. In the event of error it will - * just call png_error. The input data length may exceed 32-bits. The 'flush' - * parameter is exactly the same as that to deflate, with the following - * meanings: - * - * Z_NO_FLUSH: normal incremental output of compressed data - * Z_SYNC_FLUSH: do a SYNC_FLUSH, used by png_write_flush - * Z_FINISH: this is the end of the input, do a Z_FINISH and clean up - * - * The routine manages the acquire and release of the png_ptr->zstream by - * checking and (at the end) clearing png_ptr->zowner; it does some sanity - * checks on the 'mode' flags while doing this. - */ -void /* PRIVATE */ -png_compress_IDAT(png_structrp png_ptr, png_const_bytep input, - png_alloc_size_t input_len, int flush) -{ - if (png_ptr->zowner != png_IDAT) - { - /* First time. Ensure we have a temporary buffer for compression and - * trim the buffer list if it has more than one entry to free memory. - * If 'WRITE_COMPRESSED_TEXT' is not set the list will never have been - * created at this point, but the check here is quick and safe. - */ - if (png_ptr->zbuffer_list == NULL) - { - png_ptr->zbuffer_list = png_voidcast(png_compression_bufferp, - png_malloc(png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr))); - png_ptr->zbuffer_list->next = NULL; - } - - else - png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list->next); - - /* It is a terminal error if we can't claim the zstream. */ - if (png_deflate_claim(png_ptr, png_IDAT, png_image_size(png_ptr)) != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg); - - /* The output state is maintained in png_ptr->zstream, so it must be - * initialized here after the claim. - */ - png_ptr->zstream.next_out = png_ptr->zbuffer_list->output; - png_ptr->zstream.avail_out = png_ptr->zbuffer_size; - } - - /* Now loop reading and writing until all the input is consumed or an error - * terminates the operation. The _out values are maintained across calls to - * this function, but the input must be reset each time. - */ - png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input); - png_ptr->zstream.avail_in = 0; /* set below */ - for (;;) - { - int ret; - - /* INPUT: from the row data */ - uInt avail = ZLIB_IO_MAX; - - if (avail > input_len) - avail = (uInt)input_len; /* safe because of the check */ - - png_ptr->zstream.avail_in = avail; - input_len -= avail; - - ret = deflate(&png_ptr->zstream, input_len > 0 ? Z_NO_FLUSH : flush); - - /* Include as-yet unconsumed input */ - input_len += png_ptr->zstream.avail_in; - png_ptr->zstream.avail_in = 0; - - /* OUTPUT: write complete IDAT chunks when avail_out drops to zero. Note - * that these two zstream fields are preserved across the calls, therefore - * there is no need to set these up on entry to the loop. - */ - if (png_ptr->zstream.avail_out == 0) - { - png_bytep data = png_ptr->zbuffer_list->output; - uInt size = png_ptr->zbuffer_size; - - /* Write an IDAT containing the data then reset the buffer. The - * first IDAT may need deflate header optimization. - */ -#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED - if ((png_ptr->mode & PNG_HAVE_IDAT) == 0 && - png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE) - optimize_cmf(data, png_image_size(png_ptr)); -#endif - - if (size > 0) - png_write_complete_chunk(png_ptr, png_IDAT, data, size); - png_ptr->mode |= PNG_HAVE_IDAT; - - png_ptr->zstream.next_out = data; - png_ptr->zstream.avail_out = size; - - /* For SYNC_FLUSH or FINISH it is essential to keep calling zlib with - * the same flush parameter until it has finished output, for NO_FLUSH - * it doesn't matter. - */ - if (ret == Z_OK && flush != Z_NO_FLUSH) - continue; - } - - /* The order of these checks doesn't matter much; it just affects which - * possible error might be detected if multiple things go wrong at once. - */ - if (ret == Z_OK) /* most likely return code! */ - { - /* If all the input has been consumed then just return. If Z_FINISH - * was used as the flush parameter something has gone wrong if we get - * here. - */ - if (input_len == 0) - { - if (flush == Z_FINISH) - png_error(png_ptr, "Z_OK on Z_FINISH with output space"); - - return; - } - } - - else if (ret == Z_STREAM_END && flush == Z_FINISH) - { - /* This is the end of the IDAT data; any pending output must be - * flushed. For small PNG files we may still be at the beginning. - */ - png_bytep data = png_ptr->zbuffer_list->output; - uInt size = png_ptr->zbuffer_size - png_ptr->zstream.avail_out; - -#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED - if ((png_ptr->mode & PNG_HAVE_IDAT) == 0 && - png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE) - optimize_cmf(data, png_image_size(png_ptr)); -#endif - - if (size > 0) - png_write_complete_chunk(png_ptr, png_IDAT, data, size); - png_ptr->zstream.avail_out = 0; - png_ptr->zstream.next_out = NULL; - png_ptr->mode |= PNG_HAVE_IDAT | PNG_AFTER_IDAT; - - png_ptr->zowner = 0; /* Release the stream */ - return; - } - - else - { - /* This is an error condition. */ - png_zstream_error(png_ptr, ret); - png_error(png_ptr, png_ptr->zstream.msg); - } - } -} - -/* Write an IEND chunk */ -void /* PRIVATE */ -png_write_IEND(png_structrp png_ptr) -{ - png_debug(1, "in png_write_IEND"); - - png_write_complete_chunk(png_ptr, png_IEND, NULL, (png_size_t)0); - png_ptr->mode |= PNG_HAVE_IEND; -} - -#ifdef PNG_WRITE_gAMA_SUPPORTED -/* Write a gAMA chunk */ -void /* PRIVATE */ -png_write_gAMA_fixed(png_structrp png_ptr, png_fixed_point file_gamma) -{ - png_byte buf[4]; - - png_debug(1, "in png_write_gAMA"); - - /* file_gamma is saved in 1/100,000ths */ - png_save_uint_32(buf, (png_uint_32)file_gamma); - png_write_complete_chunk(png_ptr, png_gAMA, buf, (png_size_t)4); -} -#endif - -#ifdef PNG_WRITE_sRGB_SUPPORTED -/* Write a sRGB chunk */ -void /* PRIVATE */ -png_write_sRGB(png_structrp png_ptr, int srgb_intent) -{ - png_byte buf[1]; - - png_debug(1, "in png_write_sRGB"); - - if (srgb_intent >= PNG_sRGB_INTENT_LAST) - png_warning(png_ptr, - "Invalid sRGB rendering intent specified"); - - buf[0]=(png_byte)srgb_intent; - png_write_complete_chunk(png_ptr, png_sRGB, buf, (png_size_t)1); -} -#endif - -#ifdef PNG_WRITE_iCCP_SUPPORTED -/* Write an iCCP chunk */ -void /* PRIVATE */ -png_write_iCCP(png_structrp png_ptr, png_const_charp name, - png_const_bytep profile) -{ - png_uint_32 name_len; - png_uint_32 profile_len; - png_byte new_name[81]; /* 1 byte for the compression byte */ - compression_state comp; - png_uint_32 temp; - - png_debug(1, "in png_write_iCCP"); - - /* These are all internal problems: the profile should have been checked - * before when it was stored. - */ - if (profile == NULL) - png_error(png_ptr, "No profile for iCCP chunk"); /* internal error */ - - profile_len = png_get_uint_32(profile); - - if (profile_len < 132) - png_error(png_ptr, "ICC profile too short"); - - temp = (png_uint_32) (*(profile+8)); - if (temp > 3 && (profile_len & 0x03)) - png_error(png_ptr, "ICC profile length invalid (not a multiple of 4)"); - - { - png_uint_32 embedded_profile_len = png_get_uint_32(profile); - - if (profile_len != embedded_profile_len) - png_error(png_ptr, "Profile length does not match profile"); - } - - name_len = png_check_keyword(png_ptr, name, new_name); - - if (name_len == 0) - png_error(png_ptr, "iCCP: invalid keyword"); - - new_name[++name_len] = PNG_COMPRESSION_TYPE_BASE; - - /* Make sure we include the NULL after the name and the compression type */ - ++name_len; - - png_text_compress_init(&comp, profile, profile_len); - - /* Allow for keyword terminator and compression byte */ - if (png_text_compress(png_ptr, png_iCCP, &comp, name_len) != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg); - - png_write_chunk_header(png_ptr, png_iCCP, name_len + comp.output_len); - - png_write_chunk_data(png_ptr, new_name, name_len); - - png_write_compressed_data_out(png_ptr, &comp); - - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_sPLT_SUPPORTED -/* Write a sPLT chunk */ -void /* PRIVATE */ -png_write_sPLT(png_structrp png_ptr, png_const_sPLT_tp spalette) -{ - png_uint_32 name_len; - png_byte new_name[80]; - png_byte entrybuf[10]; - png_size_t entry_size = (spalette->depth == 8 ? 6 : 10); - png_size_t palette_size = entry_size * (png_size_t)spalette->nentries; - png_sPLT_entryp ep; -#ifndef PNG_POINTER_INDEXING_SUPPORTED - int i; -#endif - - png_debug(1, "in png_write_sPLT"); - - name_len = png_check_keyword(png_ptr, spalette->name, new_name); - - if (name_len == 0) - png_error(png_ptr, "sPLT: invalid keyword"); - - /* Make sure we include the NULL after the name */ - png_write_chunk_header(png_ptr, png_sPLT, - (png_uint_32)(name_len + 2 + palette_size)); - - png_write_chunk_data(png_ptr, (png_bytep)new_name, - (png_size_t)(name_len + 1)); - - png_write_chunk_data(png_ptr, &spalette->depth, (png_size_t)1); - - /* Loop through each palette entry, writing appropriately */ -#ifdef PNG_POINTER_INDEXING_SUPPORTED - for (ep = spalette->entries; epentries + spalette->nentries; ep++) - { - if (spalette->depth == 8) - { - entrybuf[0] = (png_byte)ep->red; - entrybuf[1] = (png_byte)ep->green; - entrybuf[2] = (png_byte)ep->blue; - entrybuf[3] = (png_byte)ep->alpha; - png_save_uint_16(entrybuf + 4, ep->frequency); - } - - else - { - png_save_uint_16(entrybuf + 0, ep->red); - png_save_uint_16(entrybuf + 2, ep->green); - png_save_uint_16(entrybuf + 4, ep->blue); - png_save_uint_16(entrybuf + 6, ep->alpha); - png_save_uint_16(entrybuf + 8, ep->frequency); - } - - png_write_chunk_data(png_ptr, entrybuf, entry_size); - } -#else - ep=spalette->entries; - for (i = 0; i>spalette->nentries; i++) - { - if (spalette->depth == 8) - { - entrybuf[0] = (png_byte)ep[i].red; - entrybuf[1] = (png_byte)ep[i].green; - entrybuf[2] = (png_byte)ep[i].blue; - entrybuf[3] = (png_byte)ep[i].alpha; - png_save_uint_16(entrybuf + 4, ep[i].frequency); - } - - else - { - png_save_uint_16(entrybuf + 0, ep[i].red); - png_save_uint_16(entrybuf + 2, ep[i].green); - png_save_uint_16(entrybuf + 4, ep[i].blue); - png_save_uint_16(entrybuf + 6, ep[i].alpha); - png_save_uint_16(entrybuf + 8, ep[i].frequency); - } - - png_write_chunk_data(png_ptr, entrybuf, entry_size); - } -#endif - - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_sBIT_SUPPORTED -/* Write the sBIT chunk */ -void /* PRIVATE */ -png_write_sBIT(png_structrp png_ptr, png_const_color_8p sbit, int color_type) -{ - png_byte buf[4]; - png_size_t size; - - png_debug(1, "in png_write_sBIT"); - - /* Make sure we don't depend upon the order of PNG_COLOR_8 */ - if ((color_type & PNG_COLOR_MASK_COLOR) != 0) - { - png_byte maxbits; - - maxbits = (png_byte)(color_type==PNG_COLOR_TYPE_PALETTE ? 8 : - png_ptr->usr_bit_depth); - - if (sbit->red == 0 || sbit->red > maxbits || - sbit->green == 0 || sbit->green > maxbits || - sbit->blue == 0 || sbit->blue > maxbits) - { - png_warning(png_ptr, "Invalid sBIT depth specified"); - return; - } - - buf[0] = sbit->red; - buf[1] = sbit->green; - buf[2] = sbit->blue; - size = 3; - } - - else - { - if (sbit->gray == 0 || sbit->gray > png_ptr->usr_bit_depth) - { - png_warning(png_ptr, "Invalid sBIT depth specified"); - return; - } - - buf[0] = sbit->gray; - size = 1; - } - - if ((color_type & PNG_COLOR_MASK_ALPHA) != 0) - { - if (sbit->alpha == 0 || sbit->alpha > png_ptr->usr_bit_depth) - { - png_warning(png_ptr, "Invalid sBIT depth specified"); - return; - } - - buf[size++] = sbit->alpha; - } - - png_write_complete_chunk(png_ptr, png_sBIT, buf, size); -} -#endif - -#ifdef PNG_WRITE_cHRM_SUPPORTED -/* Write the cHRM chunk */ -void /* PRIVATE */ -png_write_cHRM_fixed(png_structrp png_ptr, const png_xy *xy) -{ - png_byte buf[32]; - - png_debug(1, "in png_write_cHRM"); - - /* Each value is saved in 1/100,000ths */ - png_save_int_32(buf, xy->whitex); - png_save_int_32(buf + 4, xy->whitey); - - png_save_int_32(buf + 8, xy->redx); - png_save_int_32(buf + 12, xy->redy); - - png_save_int_32(buf + 16, xy->greenx); - png_save_int_32(buf + 20, xy->greeny); - - png_save_int_32(buf + 24, xy->bluex); - png_save_int_32(buf + 28, xy->bluey); - - png_write_complete_chunk(png_ptr, png_cHRM, buf, 32); -} -#endif - -#ifdef PNG_WRITE_tRNS_SUPPORTED -/* Write the tRNS chunk */ -void /* PRIVATE */ -png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha, - png_const_color_16p tran, int num_trans, int color_type) -{ - png_byte buf[6]; - - png_debug(1, "in png_write_tRNS"); - - if (color_type == PNG_COLOR_TYPE_PALETTE) - { - if (num_trans <= 0 || num_trans > (int)png_ptr->num_palette) - { - png_app_warning(png_ptr, - "Invalid number of transparent colors specified"); - return; - } - - /* Write the chunk out as it is */ - png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha, - (png_size_t)num_trans); - } - - else if (color_type == PNG_COLOR_TYPE_GRAY) - { - /* One 16-bit value */ - if (tran->gray >= (1 << png_ptr->bit_depth)) - { - png_app_warning(png_ptr, - "Ignoring attempt to write tRNS chunk out-of-range for bit_depth"); - - return; - } - - png_save_uint_16(buf, tran->gray); - png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)2); - } - - else if (color_type == PNG_COLOR_TYPE_RGB) - { - /* Three 16-bit values */ - png_save_uint_16(buf, tran->red); - png_save_uint_16(buf + 2, tran->green); - png_save_uint_16(buf + 4, tran->blue); -#ifdef PNG_WRITE_16BIT_SUPPORTED - if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]) != 0) -#else - if ((buf[0] | buf[2] | buf[4]) != 0) -#endif - { - png_app_warning(png_ptr, - "Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8"); - return; - } - - png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)6); - } - - else - { - png_app_warning(png_ptr, "Can't write tRNS with an alpha channel"); - } -} -#endif - -#ifdef PNG_WRITE_bKGD_SUPPORTED -/* Write the background chunk */ -void /* PRIVATE */ -png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type) -{ - png_byte buf[6]; - - png_debug(1, "in png_write_bKGD"); - - if (color_type == PNG_COLOR_TYPE_PALETTE) - { - if ( -#ifdef PNG_MNG_FEATURES_SUPPORTED - (png_ptr->num_palette != 0 || - (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0) && -#endif - back->index >= png_ptr->num_palette) - { - png_warning(png_ptr, "Invalid background palette index"); - return; - } - - buf[0] = back->index; - png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)1); - } - - else if ((color_type & PNG_COLOR_MASK_COLOR) != 0) - { - png_save_uint_16(buf, back->red); - png_save_uint_16(buf + 2, back->green); - png_save_uint_16(buf + 4, back->blue); -#ifdef PNG_WRITE_16BIT_SUPPORTED - if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]) != 0) -#else - if ((buf[0] | buf[2] | buf[4]) != 0) -#endif - { - png_warning(png_ptr, - "Ignoring attempt to write 16-bit bKGD chunk " - "when bit_depth is 8"); - - return; - } - - png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)6); - } - - else - { - if (back->gray >= (1 << png_ptr->bit_depth)) - { - png_warning(png_ptr, - "Ignoring attempt to write bKGD chunk out-of-range for bit_depth"); - - return; - } - - png_save_uint_16(buf, back->gray); - png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)2); - } -} -#endif - -#ifdef PNG_WRITE_eXIf_SUPPORTED -/* Write the Exif data */ -void /* PRIVATE */ -png_write_eXIf(png_structrp png_ptr, png_bytep exif, int num_exif) -{ - int i; - png_byte buf[1]; - - png_debug(1, "in png_write_eXIf"); - - png_write_chunk_header(png_ptr, png_eXIf, (png_uint_32)(num_exif)); - - for (i = 0; i < num_exif; i++) - { - buf[0] = exif[i]; - png_write_chunk_data(png_ptr, buf, (png_size_t)1); - } - - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_hIST_SUPPORTED -/* Write the histogram */ -void /* PRIVATE */ -png_write_hIST(png_structrp png_ptr, png_const_uint_16p hist, int num_hist) -{ - int i; - png_byte buf[3]; - - png_debug(1, "in png_write_hIST"); - - if (num_hist > (int)png_ptr->num_palette) - { - png_debug2(3, "num_hist = %d, num_palette = %d", num_hist, - png_ptr->num_palette); - - png_warning(png_ptr, "Invalid number of histogram entries specified"); - return; - } - - png_write_chunk_header(png_ptr, png_hIST, (png_uint_32)(num_hist * 2)); - - for (i = 0; i < num_hist; i++) - { - png_save_uint_16(buf, hist[i]); - png_write_chunk_data(png_ptr, buf, (png_size_t)2); - } - - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_tEXt_SUPPORTED -/* Write a tEXt chunk */ -void /* PRIVATE */ -png_write_tEXt(png_structrp png_ptr, png_const_charp key, png_const_charp text, - png_size_t text_len) -{ - png_uint_32 key_len; - png_byte new_key[80]; - - png_debug(1, "in png_write_tEXt"); - - key_len = png_check_keyword(png_ptr, key, new_key); - - if (key_len == 0) - png_error(png_ptr, "tEXt: invalid keyword"); - - if (text == NULL || *text == '\0') - text_len = 0; - - else - text_len = strlen(text); - - if (text_len > PNG_UINT_31_MAX - (key_len+1)) - png_error(png_ptr, "tEXt: text too long"); - - /* Make sure we include the 0 after the key */ - png_write_chunk_header(png_ptr, png_tEXt, - (png_uint_32)/*checked above*/(key_len + text_len + 1)); - /* - * We leave it to the application to meet PNG-1.0 requirements on the - * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of - * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them. - * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG. - */ - png_write_chunk_data(png_ptr, new_key, key_len + 1); - - if (text_len != 0) - png_write_chunk_data(png_ptr, (png_const_bytep)text, text_len); - - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_zTXt_SUPPORTED -/* Write a compressed text chunk */ -void /* PRIVATE */ -png_write_zTXt(png_structrp png_ptr, png_const_charp key, png_const_charp text, - int compression) -{ - png_uint_32 key_len; - png_byte new_key[81]; - compression_state comp; - - png_debug(1, "in png_write_zTXt"); - - if (compression == PNG_TEXT_COMPRESSION_NONE) - { - png_write_tEXt(png_ptr, key, text, 0); - return; - } - - if (compression != PNG_TEXT_COMPRESSION_zTXt) - png_error(png_ptr, "zTXt: invalid compression type"); - - key_len = png_check_keyword(png_ptr, key, new_key); - - if (key_len == 0) - png_error(png_ptr, "zTXt: invalid keyword"); - - /* Add the compression method and 1 for the keyword separator. */ - new_key[++key_len] = PNG_COMPRESSION_TYPE_BASE; - ++key_len; - - /* Compute the compressed data; do it now for the length */ - png_text_compress_init(&comp, (png_const_bytep)text, - text == NULL ? 0 : strlen(text)); - - if (png_text_compress(png_ptr, png_zTXt, &comp, key_len) != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg); - - /* Write start of chunk */ - png_write_chunk_header(png_ptr, png_zTXt, key_len + comp.output_len); - - /* Write key */ - png_write_chunk_data(png_ptr, new_key, key_len); - - /* Write the compressed data */ - png_write_compressed_data_out(png_ptr, &comp); - - /* Close the chunk */ - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_iTXt_SUPPORTED -/* Write an iTXt chunk */ -void /* PRIVATE */ -png_write_iTXt(png_structrp png_ptr, int compression, png_const_charp key, - png_const_charp lang, png_const_charp lang_key, png_const_charp text) -{ - png_uint_32 key_len, prefix_len; - png_size_t lang_len, lang_key_len; - png_byte new_key[82]; - compression_state comp; - - png_debug(1, "in png_write_iTXt"); - - key_len = png_check_keyword(png_ptr, key, new_key); - - if (key_len == 0) - png_error(png_ptr, "iTXt: invalid keyword"); - - /* Set the compression flag */ - switch (compression) - { - case PNG_ITXT_COMPRESSION_NONE: - case PNG_TEXT_COMPRESSION_NONE: - compression = new_key[++key_len] = 0; /* no compression */ - break; - - case PNG_TEXT_COMPRESSION_zTXt: - case PNG_ITXT_COMPRESSION_zTXt: - compression = new_key[++key_len] = 1; /* compressed */ - break; - - default: - png_error(png_ptr, "iTXt: invalid compression"); - } - - new_key[++key_len] = PNG_COMPRESSION_TYPE_BASE; - ++key_len; /* for the keywod separator */ - - /* We leave it to the application to meet PNG-1.0 requirements on the - * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of - * any non-Latin-1 characters except for NEWLINE. ISO PNG, however, - * specifies that the text is UTF-8 and this really doesn't require any - * checking. - * - * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG. - * - * TODO: validate the language tag correctly (see the spec.) - */ - if (lang == NULL) lang = ""; /* empty language is valid */ - lang_len = strlen(lang)+1; - if (lang_key == NULL) lang_key = ""; /* may be empty */ - lang_key_len = strlen(lang_key)+1; - if (text == NULL) text = ""; /* may be empty */ - - prefix_len = key_len; - if (lang_len > PNG_UINT_31_MAX-prefix_len) - prefix_len = PNG_UINT_31_MAX; - else - prefix_len = (png_uint_32)(prefix_len + lang_len); - - if (lang_key_len > PNG_UINT_31_MAX-prefix_len) - prefix_len = PNG_UINT_31_MAX; - else - prefix_len = (png_uint_32)(prefix_len + lang_key_len); - - png_text_compress_init(&comp, (png_const_bytep)text, strlen(text)); - - if (compression != 0) - { - if (png_text_compress(png_ptr, png_iTXt, &comp, prefix_len) != Z_OK) - png_error(png_ptr, png_ptr->zstream.msg); - } - - else - { - if (comp.input_len > PNG_UINT_31_MAX-prefix_len) - png_error(png_ptr, "iTXt: uncompressed text too long"); - - /* So the string will fit in a chunk: */ - comp.output_len = (png_uint_32)/*SAFE*/comp.input_len; - } - - png_write_chunk_header(png_ptr, png_iTXt, comp.output_len + prefix_len); - - png_write_chunk_data(png_ptr, new_key, key_len); - - png_write_chunk_data(png_ptr, (png_const_bytep)lang, lang_len); - - png_write_chunk_data(png_ptr, (png_const_bytep)lang_key, lang_key_len); - - if (compression != 0) - png_write_compressed_data_out(png_ptr, &comp); - - else - png_write_chunk_data(png_ptr, (png_const_bytep)text, comp.output_len); - - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_oFFs_SUPPORTED -/* Write the oFFs chunk */ -void /* PRIVATE */ -png_write_oFFs(png_structrp png_ptr, png_int_32 x_offset, png_int_32 y_offset, - int unit_type) -{ - png_byte buf[9]; - - png_debug(1, "in png_write_oFFs"); - - if (unit_type >= PNG_OFFSET_LAST) - png_warning(png_ptr, "Unrecognized unit type for oFFs chunk"); - - png_save_int_32(buf, x_offset); - png_save_int_32(buf + 4, y_offset); - buf[8] = (png_byte)unit_type; - - png_write_complete_chunk(png_ptr, png_oFFs, buf, (png_size_t)9); -} -#endif -#ifdef PNG_WRITE_pCAL_SUPPORTED -/* Write the pCAL chunk (described in the PNG extensions document) */ -void /* PRIVATE */ -png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0, - png_int_32 X1, int type, int nparams, png_const_charp units, - png_charpp params) -{ - png_uint_32 purpose_len; - png_size_t units_len, total_len; - png_size_tp params_len; - png_byte buf[10]; - png_byte new_purpose[80]; - int i; - - png_debug1(1, "in png_write_pCAL (%d parameters)", nparams); - - if (type >= PNG_EQUATION_LAST) - png_error(png_ptr, "Unrecognized equation type for pCAL chunk"); - - purpose_len = png_check_keyword(png_ptr, purpose, new_purpose); - - if (purpose_len == 0) - png_error(png_ptr, "pCAL: invalid keyword"); - - ++purpose_len; /* terminator */ - - png_debug1(3, "pCAL purpose length = %d", (int)purpose_len); - units_len = strlen(units) + (nparams == 0 ? 0 : 1); - png_debug1(3, "pCAL units length = %d", (int)units_len); - total_len = purpose_len + units_len + 10; - - params_len = (png_size_tp)png_malloc(png_ptr, - (png_alloc_size_t)((png_alloc_size_t)nparams * (sizeof (png_size_t)))); - - /* Find the length of each parameter, making sure we don't count the - * null terminator for the last parameter. - */ - for (i = 0; i < nparams; i++) - { - params_len[i] = strlen(params[i]) + (i == nparams - 1 ? 0 : 1); - png_debug2(3, "pCAL parameter %d length = %lu", i, - (unsigned long)params_len[i]); - total_len += params_len[i]; - } - - png_debug1(3, "pCAL total length = %d", (int)total_len); - png_write_chunk_header(png_ptr, png_pCAL, (png_uint_32)total_len); - png_write_chunk_data(png_ptr, new_purpose, purpose_len); - png_save_int_32(buf, X0); - png_save_int_32(buf + 4, X1); - buf[8] = (png_byte)type; - buf[9] = (png_byte)nparams; - png_write_chunk_data(png_ptr, buf, (png_size_t)10); - png_write_chunk_data(png_ptr, (png_const_bytep)units, (png_size_t)units_len); - - for (i = 0; i < nparams; i++) - { - png_write_chunk_data(png_ptr, (png_const_bytep)params[i], params_len[i]); - } - - png_free(png_ptr, params_len); - png_write_chunk_end(png_ptr); -} -#endif - -#ifdef PNG_WRITE_sCAL_SUPPORTED -/* Write the sCAL chunk */ -void /* PRIVATE */ -png_write_sCAL_s(png_structrp png_ptr, int unit, png_const_charp width, - png_const_charp height) -{ - png_byte buf[64]; - png_size_t wlen, hlen, total_len; - - png_debug(1, "in png_write_sCAL_s"); - - wlen = strlen(width); - hlen = strlen(height); - total_len = wlen + hlen + 2; - - if (total_len > 64) - { - png_warning(png_ptr, "Can't write sCAL (buffer too small)"); - return; - } - - buf[0] = (png_byte)unit; - memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */ - memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */ - - png_debug1(3, "sCAL total length = %u", (unsigned int)total_len); - png_write_complete_chunk(png_ptr, png_sCAL, buf, total_len); -} -#endif - -#ifdef PNG_WRITE_pHYs_SUPPORTED -/* Write the pHYs chunk */ -void /* PRIVATE */ -png_write_pHYs(png_structrp png_ptr, png_uint_32 x_pixels_per_unit, - png_uint_32 y_pixels_per_unit, - int unit_type) -{ - png_byte buf[9]; - - png_debug(1, "in png_write_pHYs"); - - if (unit_type >= PNG_RESOLUTION_LAST) - png_warning(png_ptr, "Unrecognized unit type for pHYs chunk"); - - png_save_uint_32(buf, x_pixels_per_unit); - png_save_uint_32(buf + 4, y_pixels_per_unit); - buf[8] = (png_byte)unit_type; - - png_write_complete_chunk(png_ptr, png_pHYs, buf, (png_size_t)9); -} -#endif - -#ifdef PNG_WRITE_tIME_SUPPORTED -/* Write the tIME chunk. Use either png_convert_from_struct_tm() - * or png_convert_from_time_t(), or fill in the structure yourself. - */ -void /* PRIVATE */ -png_write_tIME(png_structrp png_ptr, png_const_timep mod_time) -{ - png_byte buf[7]; - - png_debug(1, "in png_write_tIME"); - - if (mod_time->month > 12 || mod_time->month < 1 || - mod_time->day > 31 || mod_time->day < 1 || - mod_time->hour > 23 || mod_time->second > 60) - { - png_warning(png_ptr, "Invalid time specified for tIME chunk"); - return; - } - - png_save_uint_16(buf, mod_time->year); - buf[2] = mod_time->month; - buf[3] = mod_time->day; - buf[4] = mod_time->hour; - buf[5] = mod_time->minute; - buf[6] = mod_time->second; - - png_write_complete_chunk(png_ptr, png_tIME, buf, (png_size_t)7); -} -#endif - -/* Initializes the row writing capability of libpng */ -void /* PRIVATE */ -png_write_start_row(png_structrp png_ptr) -{ -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; -#endif - - png_alloc_size_t buf_size; - int usr_pixel_depth; - -#ifdef PNG_WRITE_FILTER_SUPPORTED - png_byte filters; -#endif - - png_debug(1, "in png_write_start_row"); - - usr_pixel_depth = png_ptr->usr_channels * png_ptr->usr_bit_depth; - buf_size = PNG_ROWBYTES(usr_pixel_depth, png_ptr->width) + 1; - - /* 1.5.6: added to allow checking in the row write code. */ - png_ptr->transformed_pixel_depth = png_ptr->pixel_depth; - png_ptr->maximum_pixel_depth = (png_byte)usr_pixel_depth; - - /* Set up row buffer */ - png_ptr->row_buf = png_voidcast(png_bytep, png_malloc(png_ptr, buf_size)); - - png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE; - -#ifdef PNG_WRITE_FILTER_SUPPORTED - filters = png_ptr->do_filter; - - if (png_ptr->height == 1) - filters &= 0xff & ~(PNG_FILTER_UP|PNG_FILTER_AVG|PNG_FILTER_PAETH); - - if (png_ptr->width == 1) - filters &= 0xff & ~(PNG_FILTER_SUB|PNG_FILTER_AVG|PNG_FILTER_PAETH); - - if (filters == 0) - filters = PNG_FILTER_NONE; - - png_ptr->do_filter = filters; - - if (((filters & (PNG_FILTER_SUB | PNG_FILTER_UP | PNG_FILTER_AVG | - PNG_FILTER_PAETH)) != 0) && png_ptr->try_row == NULL) - { - int num_filters = 0; - - png_ptr->try_row = png_voidcast(png_bytep, png_malloc(png_ptr, buf_size)); - - if (filters & PNG_FILTER_SUB) - num_filters++; - - if (filters & PNG_FILTER_UP) - num_filters++; - - if (filters & PNG_FILTER_AVG) - num_filters++; - - if (filters & PNG_FILTER_PAETH) - num_filters++; - - if (num_filters > 1) - png_ptr->tst_row = png_voidcast(png_bytep, png_malloc(png_ptr, - buf_size)); - } - - /* We only need to keep the previous row if we are using one of the following - * filters. - */ - if ((filters & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH)) != 0) - png_ptr->prev_row = png_voidcast(png_bytep, - png_calloc(png_ptr, buf_size)); -#endif /* WRITE_FILTER */ - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* If interlaced, we need to set up width and height of pass */ - if (png_ptr->interlaced != 0) - { - if ((png_ptr->transformations & PNG_INTERLACE) == 0) - { - png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 - - png_pass_ystart[0]) / png_pass_yinc[0]; - - png_ptr->usr_width = (png_ptr->width + png_pass_inc[0] - 1 - - png_pass_start[0]) / png_pass_inc[0]; - } - - else - { - png_ptr->num_rows = png_ptr->height; - png_ptr->usr_width = png_ptr->width; - } - } - - else -#endif - { - png_ptr->num_rows = png_ptr->height; - png_ptr->usr_width = png_ptr->width; - } -} - -/* Internal use only. Called when finished processing a row of data. */ -void /* PRIVATE */ -png_write_finish_row(png_structrp png_ptr) -{ -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - /* Start of interlace block in the y direction */ - static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1}; - - /* Offset to next interlace block in the y direction */ - static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2}; -#endif - - png_debug(1, "in png_write_finish_row"); - - /* Next row */ - png_ptr->row_number++; - - /* See if we are done */ - if (png_ptr->row_number < png_ptr->num_rows) - return; - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED - /* If interlaced, go to next pass */ - if (png_ptr->interlaced != 0) - { - png_ptr->row_number = 0; - if ((png_ptr->transformations & PNG_INTERLACE) != 0) - { - png_ptr->pass++; - } - - else - { - /* Loop until we find a non-zero width or height pass */ - do - { - png_ptr->pass++; - - if (png_ptr->pass >= 7) - break; - - png_ptr->usr_width = (png_ptr->width + - png_pass_inc[png_ptr->pass] - 1 - - png_pass_start[png_ptr->pass]) / - png_pass_inc[png_ptr->pass]; - - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - - if ((png_ptr->transformations & PNG_INTERLACE) != 0) - break; - - } while (png_ptr->usr_width == 0 || png_ptr->num_rows == 0); - - } - - /* Reset the row above the image for the next pass */ - if (png_ptr->pass < 7) - { - if (png_ptr->prev_row != NULL) - memset(png_ptr->prev_row, 0, - (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels* - png_ptr->usr_bit_depth, png_ptr->width)) + 1); - - return; - } - } -#endif - - /* If we get here, we've just written the last row, so we need - to flush the compressor */ - png_compress_IDAT(png_ptr, NULL, 0, Z_FINISH); -} - -#ifdef PNG_WRITE_INTERLACING_SUPPORTED -/* Pick out the correct pixels for the interlace pass. - * The basic idea here is to go through the row with a source - * pointer and a destination pointer (sp and dp), and copy the - * correct pixels for the pass. As the row gets compacted, - * sp will always be >= dp, so we should never overwrite anything. - * See the default: case for the easiest code to understand. - */ -void /* PRIVATE */ -png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass) -{ - /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */ - - /* Start of interlace block */ - static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0}; - - /* Offset to next interlace block */ - static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1}; - - png_debug(1, "in png_do_write_interlace"); - - /* We don't have to do anything on the last pass (6) */ - if (pass < 6) - { - /* Each pixel depth is handled separately */ - switch (row_info->pixel_depth) - { - case 1: - { - png_bytep sp; - png_bytep dp; - unsigned int shift; - int d; - int value; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - dp = row; - d = 0; - shift = 7; - - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - sp = row + (png_size_t)(i >> 3); - value = (int)(*sp >> (7 - (int)(i & 0x07))) & 0x01; - d |= (value << shift); - - if (shift == 0) - { - shift = 7; - *dp++ = (png_byte)d; - d = 0; - } - - else - shift--; - - } - if (shift != 7) - *dp = (png_byte)d; - - break; - } - - case 2: - { - png_bytep sp; - png_bytep dp; - unsigned int shift; - int d; - int value; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - dp = row; - shift = 6; - d = 0; - - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - sp = row + (png_size_t)(i >> 2); - value = (*sp >> ((3 - (int)(i & 0x03)) << 1)) & 0x03; - d |= (value << shift); - - if (shift == 0) - { - shift = 6; - *dp++ = (png_byte)d; - d = 0; - } - - else - shift -= 2; - } - if (shift != 6) - *dp = (png_byte)d; - - break; - } - - case 4: - { - png_bytep sp; - png_bytep dp; - unsigned int shift; - int d; - int value; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - - dp = row; - shift = 4; - d = 0; - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - sp = row + (png_size_t)(i >> 1); - value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f; - d |= (value << shift); - - if (shift == 0) - { - shift = 4; - *dp++ = (png_byte)d; - d = 0; - } - - else - shift -= 4; - } - if (shift != 4) - *dp = (png_byte)d; - - break; - } - - default: - { - png_bytep sp; - png_bytep dp; - png_uint_32 i; - png_uint_32 row_width = row_info->width; - png_size_t pixel_bytes; - - /* Start at the beginning */ - dp = row; - - /* Find out how many bytes each pixel takes up */ - pixel_bytes = (row_info->pixel_depth >> 3); - - /* Loop through the row, only looking at the pixels that matter */ - for (i = png_pass_start[pass]; i < row_width; - i += png_pass_inc[pass]) - { - /* Find out where the original pixel is */ - sp = row + (png_size_t)i * pixel_bytes; - - /* Move the pixel */ - if (dp != sp) - memcpy(dp, sp, pixel_bytes); - - /* Next pixel */ - dp += pixel_bytes; - } - break; - } - } - /* Set new row width */ - row_info->width = (row_info->width + - png_pass_inc[pass] - 1 - - png_pass_start[pass]) / - png_pass_inc[pass]; - - row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, - row_info->width); - } -} -#endif - - -/* This filters the row, chooses which filter to use, if it has not already - * been specified by the application, and then writes the row out with the - * chosen filter. - */ -static void /* PRIVATE */ -png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row, - png_size_t row_bytes); - -#ifdef PNG_WRITE_FILTER_SUPPORTED -static png_size_t /* PRIVATE */ -png_setup_sub_row(png_structrp png_ptr, const png_uint_32 bpp, - const png_size_t row_bytes, const png_size_t lmins) -{ - png_bytep rp, dp, lp; - png_size_t i; - png_size_t sum = 0; - unsigned int v; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_SUB; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1; i < bpp; - i++, rp++, dp++) - { - v = *dp = *rp; -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - } - - for (lp = png_ptr->row_buf + 1; i < row_bytes; - i++, rp++, lp++, dp++) - { - v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff); -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - - return (sum); -} - -static void /* PRIVATE */ -png_setup_sub_row_only(png_structrp png_ptr, const png_uint_32 bpp, - const png_size_t row_bytes) -{ - png_bytep rp, dp, lp; - png_size_t i; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_SUB; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1; i < bpp; - i++, rp++, dp++) - { - *dp = *rp; - } - - for (lp = png_ptr->row_buf + 1; i < row_bytes; - i++, rp++, lp++, dp++) - { - *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff); - } -} - -static png_size_t /* PRIVATE */ -png_setup_up_row(png_structrp png_ptr, const png_size_t row_bytes, - const png_size_t lmins) -{ - png_bytep rp, dp, pp; - png_size_t i; - png_size_t sum = 0; - unsigned int v; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_UP; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1, - pp = png_ptr->prev_row + 1; i < row_bytes; - i++, rp++, pp++, dp++) - { - v = *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff); -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - - return (sum); -} -static void /* PRIVATE */ -png_setup_up_row_only(png_structrp png_ptr, const png_size_t row_bytes) -{ - png_bytep rp, dp, pp; - png_size_t i; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_UP; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1, - pp = png_ptr->prev_row + 1; i < row_bytes; - i++, rp++, pp++, dp++) - { - *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff); - } -} - -static png_size_t /* PRIVATE */ -png_setup_avg_row(png_structrp png_ptr, const png_uint_32 bpp, - const png_size_t row_bytes, const png_size_t lmins) -{ - png_bytep rp, dp, pp, lp; - png_uint_32 i; - png_size_t sum = 0; - unsigned int v; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_AVG; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1, - pp = png_ptr->prev_row + 1; i < bpp; i++) - { - v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff); - -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - } - - for (lp = png_ptr->row_buf + 1; i < row_bytes; i++) - { - v = *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) - & 0xff); - -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - - return (sum); -} -static void /* PRIVATE */ -png_setup_avg_row_only(png_structrp png_ptr, const png_uint_32 bpp, - const png_size_t row_bytes) -{ - png_bytep rp, dp, pp, lp; - png_uint_32 i; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_AVG; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1, - pp = png_ptr->prev_row + 1; i < bpp; i++) - { - *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff); - } - - for (lp = png_ptr->row_buf + 1; i < row_bytes; i++) - { - *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) - & 0xff); - } -} - -static png_size_t /* PRIVATE */ -png_setup_paeth_row(png_structrp png_ptr, const png_uint_32 bpp, - const png_size_t row_bytes, const png_size_t lmins) -{ - png_bytep rp, dp, pp, cp, lp; - png_size_t i; - png_size_t sum = 0; - unsigned int v; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_PAETH; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1, - pp = png_ptr->prev_row + 1; i < bpp; i++) - { - v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff); - -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - } - - for (lp = png_ptr->row_buf + 1, cp = png_ptr->prev_row + 1; i < row_bytes; - i++) - { - int a, b, c, pa, pb, pc, p; - - b = *pp++; - c = *cp++; - a = *lp++; - - p = b - c; - pc = a - c; - -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - - p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c; - - v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff); - -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - - if (sum > lmins) /* We are already worse, don't continue. */ - break; - } - - return (sum); -} -static void /* PRIVATE */ -png_setup_paeth_row_only(png_structrp png_ptr, const png_uint_32 bpp, - const png_size_t row_bytes) -{ - png_bytep rp, dp, pp, cp, lp; - png_size_t i; - - png_ptr->try_row[0] = PNG_FILTER_VALUE_PAETH; - - for (i = 0, rp = png_ptr->row_buf + 1, dp = png_ptr->try_row + 1, - pp = png_ptr->prev_row + 1; i < bpp; i++) - { - *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff); - } - - for (lp = png_ptr->row_buf + 1, cp = png_ptr->prev_row + 1; i < row_bytes; - i++) - { - int a, b, c, pa, pb, pc, p; - - b = *pp++; - c = *cp++; - a = *lp++; - - p = b - c; - pc = a - c; - -#ifdef PNG_USE_ABS - pa = abs(p); - pb = abs(pc); - pc = abs(p + pc); -#else - pa = p < 0 ? -p : p; - pb = pc < 0 ? -pc : pc; - pc = (p + pc) < 0 ? -(p + pc) : p + pc; -#endif - - p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c; - - *dp++ = (png_byte)(((int)*rp++ - p) & 0xff); - } -} -#endif /* WRITE_FILTER */ - -void /* PRIVATE */ -png_write_find_filter(png_structrp png_ptr, png_row_infop row_info) -{ -#ifndef PNG_WRITE_FILTER_SUPPORTED - png_write_filtered_row(png_ptr, png_ptr->row_buf, row_info->rowbytes+1); -#else - unsigned int filter_to_do = png_ptr->do_filter; - png_bytep row_buf; - png_bytep best_row; - png_uint_32 bpp; - png_size_t mins; - png_size_t row_bytes = row_info->rowbytes; - - png_debug(1, "in png_write_find_filter"); - - /* Find out how many bytes offset each pixel is */ - bpp = (row_info->pixel_depth + 7) >> 3; - - row_buf = png_ptr->row_buf; - mins = PNG_SIZE_MAX - 256/* so we can detect potential overflow of the - running sum */; - - /* The prediction method we use is to find which method provides the - * smallest value when summing the absolute values of the distances - * from zero, using anything >= 128 as negative numbers. This is known - * as the "minimum sum of absolute differences" heuristic. Other - * heuristics are the "weighted minimum sum of absolute differences" - * (experimental and can in theory improve compression), and the "zlib - * predictive" method (not implemented yet), which does test compressions - * of lines using different filter methods, and then chooses the - * (series of) filter(s) that give minimum compressed data size (VERY - * computationally expensive). - * - * GRR 980525: consider also - * - * (1) minimum sum of absolute differences from running average (i.e., - * keep running sum of non-absolute differences & count of bytes) - * [track dispersion, too? restart average if dispersion too large?] - * - * (1b) minimum sum of absolute differences from sliding average, probably - * with window size <= deflate window (usually 32K) - * - * (2) minimum sum of squared differences from zero or running average - * (i.e., ~ root-mean-square approach) - */ - - - /* We don't need to test the 'no filter' case if this is the only filter - * that has been chosen, as it doesn't actually do anything to the data. - */ - best_row = png_ptr->row_buf; - - if (PNG_SIZE_MAX/128 <= row_bytes) - { - /* Overflow can occur in the calculation, just select the lowest set - * filter. - */ - filter_to_do &= 0U-filter_to_do; - } - else if ((filter_to_do & PNG_FILTER_NONE) != 0 && - filter_to_do != PNG_FILTER_NONE) - { - /* Overflow not possible and multiple filters in the list, including the - * 'none' filter. - */ - png_bytep rp; - png_size_t sum = 0; - png_size_t i; - unsigned int v; - - { - for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++) - { - v = *rp; -#ifdef PNG_USE_ABS - sum += 128 - abs((int)v - 128); -#else - sum += (v < 128) ? v : 256 - v; -#endif - } - } - - mins = sum; - } - - /* Sub filter */ - if (filter_to_do == PNG_FILTER_SUB) - /* It's the only filter so no testing is needed */ - { - png_setup_sub_row_only(png_ptr, bpp, row_bytes); - best_row = png_ptr->try_row; - } - - else if ((filter_to_do & PNG_FILTER_SUB) != 0) - { - png_size_t sum; - png_size_t lmins = mins; - - sum = png_setup_sub_row(png_ptr, bpp, row_bytes, lmins); - - if (sum < mins) - { - mins = sum; - best_row = png_ptr->try_row; - if (png_ptr->tst_row != NULL) - { - png_ptr->try_row = png_ptr->tst_row; - png_ptr->tst_row = best_row; - } - } - } - - /* Up filter */ - if (filter_to_do == PNG_FILTER_UP) - { - png_setup_up_row_only(png_ptr, row_bytes); - best_row = png_ptr->try_row; - } - - else if ((filter_to_do & PNG_FILTER_UP) != 0) - { - png_size_t sum; - png_size_t lmins = mins; - - sum = png_setup_up_row(png_ptr, row_bytes, lmins); - - if (sum < mins) - { - mins = sum; - best_row = png_ptr->try_row; - if (png_ptr->tst_row != NULL) - { - png_ptr->try_row = png_ptr->tst_row; - png_ptr->tst_row = best_row; - } - } - } - - /* Avg filter */ - if (filter_to_do == PNG_FILTER_AVG) - { - png_setup_avg_row_only(png_ptr, bpp, row_bytes); - best_row = png_ptr->try_row; - } - - else if ((filter_to_do & PNG_FILTER_AVG) != 0) - { - png_size_t sum; - png_size_t lmins = mins; - - sum= png_setup_avg_row(png_ptr, bpp, row_bytes, lmins); - - if (sum < mins) - { - mins = sum; - best_row = png_ptr->try_row; - if (png_ptr->tst_row != NULL) - { - png_ptr->try_row = png_ptr->tst_row; - png_ptr->tst_row = best_row; - } - } - } - - /* Paeth filter */ - if (filter_to_do == PNG_FILTER_PAETH) - { - png_setup_paeth_row_only(png_ptr, bpp, row_bytes); - best_row = png_ptr->try_row; - } - - else if ((filter_to_do & PNG_FILTER_PAETH) != 0) - { - png_size_t sum; - png_size_t lmins = mins; - - sum = png_setup_paeth_row(png_ptr, bpp, row_bytes, lmins); - - if (sum < mins) - { - best_row = png_ptr->try_row; - if (png_ptr->tst_row != NULL) - { - png_ptr->try_row = png_ptr->tst_row; - png_ptr->tst_row = best_row; - } - } - } - - /* Do the actual writing of the filtered row data from the chosen filter. */ - png_write_filtered_row(png_ptr, best_row, row_info->rowbytes+1); - -#endif /* WRITE_FILTER */ -} - - -/* Do the actual writing of a previously filtered row. */ -static void -png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row, - png_size_t full_row_length/*includes filter byte*/) -{ - png_debug(1, "in png_write_filtered_row"); - - png_debug1(2, "filter = %d", filtered_row[0]); - - png_compress_IDAT(png_ptr, filtered_row, full_row_length, Z_NO_FLUSH); - -#ifdef PNG_WRITE_FILTER_SUPPORTED - /* Swap the current and previous rows */ - if (png_ptr->prev_row != NULL) - { - png_bytep tptr; - - tptr = png_ptr->prev_row; - png_ptr->prev_row = png_ptr->row_buf; - png_ptr->row_buf = tptr; - } -#endif /* WRITE_FILTER */ - - /* Finish row - updates counters and flushes zlib if last row */ - png_write_finish_row(png_ptr); - -#ifdef PNG_WRITE_FLUSH_SUPPORTED - png_ptr->flush_rows++; - - if (png_ptr->flush_dist > 0 && - png_ptr->flush_rows >= png_ptr->flush_dist) - { - png_write_flush(png_ptr); - } -#endif /* WRITE_FLUSH */ -} -#endif /* WRITE */