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Updated libpng to version 16 and added sdl2_image for sdl2

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Gerhard Stein
2013-09-22 19:24:32 +02:00
parent 1979506117
commit 1b194b4cbb
48 changed files with 36389 additions and 12581 deletions
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project/jni/application/commandergenius/commandergenius
+1 -1
Submodule project/jni/application/commandergenius/commandergenius updated: 1bcbadd1ea...7c11c95336
project/jni/png/ANNOUNCE
+16 -38
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@@ -1,58 +1,36 @@
Libpng 1.4.6beta06 - January 23, 2011
Libpng 1.6.6 - September 16, 2013
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
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
1.4.6beta06.tar.xz (LZMA-compressed, recommended)
1.4.6beta06.tar.gz
1.4.6beta06.tar.bz2
libpng-1.6.6.tar.xz (LZMA-compressed, recommended)
libpng-1.6.6.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
lp146b06.7z (LZMA-compressed, recommended)
lp146b06.zip
lpng166.7z (LZMA-compressed, recommended)
lpng166.zip
Other information:
1.4.6beta06-README.txt
1.4.6beta06-LICENSE.txt
libpng-1.6.6-README.txt
libpng-1.6.6-LICENSE.txt
Gnupg/*.asc (PGP armored detached signatures)
Changes since the last public release (1.4.5):
Changes since the last public release (1.6.5):
version 1.4.6beta01 [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).
Removed two stray lines of code from arm/arm_init.c, again.
version 1.4.6beta02 [January 14, 2011]
Fixed misspelled macros in contrib/pngminim (Cosmin)
Updated CMakeLists.txt (Clifford Yapp)
version 1.4.6beta03 [January 14, 2011]
Fixed some typecasts in png_debug statements (Cosmin).
version 1.4.6beta04 [January 22, 2011]
Updated documentation of png_set|get_tRNS() (Thomas Klausner).
Added png_const_structp and png_const_infop types, and used them in
prototypes for most png_get_*() functions.
In the manual, describe the png_get_IHDR() arguments in the correct order.
version 1.4.6beta05 [January 23, 2011]
Updated the synopses in the manual to reflect recent changes.
Fixed a typo in the *.def files and deleted entries that are now
declared in pngpriv.h
version 1.4.6beta06 [January 23, 2011]
Send comments/corrections/commendations to glennrp at users.sourceforge.net
or to png-mng-implement at lists.sf.net (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement).
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
project/jni/png/CHANGES
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project/jni/png/INSTALL
+62 -36
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@@ -1,5 +1,5 @@
Installing libpng version 1.4.6beta06 - January 23, 2011
Installing libpng
On Unix/Linux and similar systems, you can simply type
@@ -9,14 +9,20 @@ On Unix/Linux and similar systems, you can simply type
and ignore the rest of this document.
If configure does not work on your system and you have a reasonably
up-to-date set of tools, running ./autogen.sh before running ./configure
may fix the problem. You can also run the individual commands in
autogen.sh with the --force option, if supported by your version of
the tools. If you run 'libtoolize --force', though, this will replace
the distributed, patched, version of ltmain.sh with an unpatched version
and your shared library builds may fail to produce libraries with the
correct version numbers.
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, you can 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
Instead, you can use one of the custom-built makefiles in the
"scripts" directory
@@ -35,19 +41,33 @@ is not already on your system. zlib can usually be found
wherever you got libpng. zlib can be placed in another directory,
at the same level as libpng.
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".
If you want to use "cmake" (see www.cmake.org), type
cmake . -DCMAKE_INSTALL_PREFIX=/path
make
make install
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.
You can rename the directories that you downloaded (they
might be called "libpng-1.4.6beta06" or "libpng14" and "zlib-1.2.3"
or "zlib123") so that you have directories called "zlib" and "libpng".
might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.7"
or "zlib127") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@@ -60,24 +80,23 @@ Your directory structure should look like this:
CMakeLists.txt => "cmake" script
configuration files:
configure.ac, configure, Makefile.am, Makefile.in,
autogen.sh, config.guess, ltmain.sh, missing,
aclocal.m4, config.h.in, config.sub,
depcomp, install-sh, test-pngtest.sh
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
gregbook
libtests
pngminim
pngminus
pngsuite
visupng
projects
cbuilder5 (Borland)
visualc6 (msvc)
visualc71
vstudio
xcode
scripts
makefile.*
*.def (module definition files)
etc.
pngtest.png
etc.
zlib
@@ -108,7 +127,7 @@ scripts directory into this directory, for example
Read the makefile to see if you need to change any source or
target directories to match your preferences.
Then read pngconf.h to see if you want to make any configuration
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
@@ -126,19 +145,26 @@ 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".
If you encounter a compiler error message complaining about the
lines
__png.h__ already includes setjmp.h;
__dont__ include it again.;
this means you have compiled another module that includes setjmp.h,
which is hazardous because the two modules might not include exactly
the same setjmp.h. If you are sure that you know what you are doing
and that they are exactly the same, then you can comment out or
delete the two lines. Better yet, use the cexcept interface
instead, as demonstrated in contrib/visupng of the libpng distribution.
Further information can be found in the README and libpng.txt
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.
Using the ./configure script -- 16 December 2002.
=================================================
The ./configure script should work compatibly with what scripts/makefile.*
did, however there are some options you might need to add to configure
explicitly, which previously was done semi-automatically (if you didn't edit
scripts/makefile.* yourself, that is)
CFLAGS="-Wall -O -funroll-loops \
-malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
--with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
You can alternatively specify --includedir=/usr/include, /usr/local/include,
/usr/include/libpng%NN%, or whatever.
If you find that the configure script is out-of-date or is not supporting
your platform properly, try running autogen.sh to regenerate "configure",
"Makefile.in", and the other configuration files. Then try configure again.
project/jni/png/LICENSE
+3 -3
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@@ -10,8 +10,8 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.4.6beta06, January 23, 2011, are
Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
libpng versions 1.2.6, August 15, 2004, through 1.6.6, September 16, 2013, are
Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
January 23, 2011
September 16, 2013
project/jni/png/README
+34 -89
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@@ -1,11 +1,11 @@
README for libpng version 1.4.6beta06 - January 23, 2011 (shared library 14.0)
README for libpng version 1.6.6 - September 16, 2013 (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,
libpng-*.tar.xz or libpng-*.tar.bz2 if you want UNIX-style line endings
in the text files, or lpng*.zip if you want DOS-style line endings.
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
@@ -58,7 +58,7 @@ 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.txt. For
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
@@ -77,17 +77,15 @@ 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.
ftp://ftp.info-zip.org/pub/infozip/zlib
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/documents/
This code is currently being archived at libpng.sf.net in the
[DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT)
at GO GRAPHSUP. If you can't find it in any of those places,
e-mail me, and I'll help you find it.
[DOWNLOAD] area, and at ftp://ftp.simplesystems.org. If you can't find it
in any of those places, e-mail me, and I'll help you find it.
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,
@@ -105,7 +103,7 @@ 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
lists.sourceforge.net (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement
to subscribe) or to glennrp at users.sourceforge.net
@@ -114,19 +112,16 @@ 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
the (png-list at ccrc.wustl.edu, subscription required, write to
majordomo at ccrc.wustl.edu with "subscribe png-list" in your message).
On the other hand,
please do not send libpng questions to that address, send them to me
or to the png-implement list. I'll
get them in the end anyway. If you have a question about something
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 nine years now, and it is official and
been discussing PNG for eighteen 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.
@@ -141,13 +136,17 @@ Files in this distribution:
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.txt)
libpng.txt => Description of libpng and its 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
pngconf.h => System specific library configuration
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
@@ -166,82 +165,28 @@ Files in this distribution:
pngwrite.c => High-level write functions
pngwtran.c => Write data transformations
pngwutil.c => Write utility functions
arm => Contains optimized code for the ARM platform
contrib => Contributions
examples => Example programs
gregbook => source code for PNG reading and writing, from
Greg Roelofs' "PNG: The Definitive Guide",
O'Reilly, 1999
msvctest => Builds and runs pngtest using a MSVC workspace
pngminus => Simple pnm2png and png2pnm programs
pngsuite => Test images
libtests => Test programs
pngminim => Minimal decoder, encoder, and progressive decoder
programs demonstrating use of pngusr.dfa
pngminus => Simple pnm2png and png2pnm programs
pngsuite => Test images
tools => Various tools
visupng => Contains a MSVC workspace for VisualPng
projects => Contains project files and workspaces for
building a DLL
c5builder => Contains a Borland workspace for building
libpng and zlib
visualc6 => Contains a Microsoft Visual C++ (MSVC)
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:
descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static
libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
(gcc, creates libpng14.so.14.1.4.6beta06)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng14.so.14.1.4.6beta06)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
ftp://ftp.cs.wisc.edu/ghost)
makefile.aix => AIX makefile
makefile.cygwin => Cygwin/gcc makefile
makefile.darwin => Darwin makefile
makefile.dec => DEC Alpha UNIX makefile
makefile.freebsd => FreeBSD makefile
makefile.hpgcc => HPUX makefile using gcc
makefile.hpux => HPUX (10.20 and 11.00) makefile
makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64 bit
makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
makefile.intel => Intel C/C++ version 4.0 and later
makefile.mingw => Mingw/gcc makefile
makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
makefile.ne14bsd => NetBSD/cc makefile, makes
libpng14.so
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics
(gcc, creates libpng14.so.14.1.4.6beta06)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng14.so.14.1.4.6beta06)
makefile.so9 => Solaris 9 makefile
(gcc, creates libpng14.so.14.1.4.6beta06)
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.mips => MIPS makefile
makefile.acorn => Acorn makefile
makefile.amiga => Amiga makefile
smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC
compiler (Requires SCOPTIONS, copied from
scripts/SCOPTIONS.ppc)
makefile.atari => Atari makefile
makefile.beos => BEOS makefile for X86
makefile.bor => Borland makefile (uses bcc)
makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
makefile.tc3 => Turbo C 3.0 makefile
makefile.dj2 => DJGPP 2 makefile
makefile.msc => Microsoft C makefile
makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and
later (does not use assembler code)
makefile.os2 => OS/2 Makefile (gcc and emx, requires pngos2.def)
png32ce.def => module definition for makefile.cegccg
pngos2.def => OS/2 module definition file used by
makefile.os2
pngwin.def => module definition file used by
makefile.cygwin and makefile.mingw
makefile.watcom => Watcom 10a+ Makefile, 32-bit flat memory model
makevms.com => VMS build script
SCOPTIONS.ppc => Used with smakefile.ppc
(see scripts/README.txt for the list of scripts)
Good luck, and happy coding.
project/jni/png/TODO
+3 -7
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@@ -2,14 +2,12 @@
TODO - list of things to do for libpng:
Final bug fixes.
Improve API by hiding the png_struct and png_info structs.
Finish work on the no-floating-point version (including gamma compensation)
Better C++ wrapper/full C++ implementation?
Fix problem with C++ and EXTERN "C".
cHRM transformation.
Improve setjmp/longjmp usage or remove it in favor of returning error codes.
Remove setjmp/longjmp usage in favor of returning error codes.
Add "grayscale->palette" transformation and "palette->grayscale" detection.
Improved quantizing and dithering.
Improved dithering.
Multi-lingual error and warning message support.
Complete sRGB transformation (presently it simply uses gamma=0.45455).
Man pages for function calls.
@@ -18,14 +16,12 @@ Better filter selection
(counting huffman bits/precompression? filter inertia? filter costs?).
Histogram creation.
Text conversion between different code pages (Latin-1 -> Mac and DOS).
Build gamma tables using fixed point (and do away with floating point entirely).
Avoid building gamma tables whenever possible.
Use greater precision when changing to linear gamma for compositing against
background and doing rgb-to-gray transformation.
Investigate pre-incremented loop counters and other loop constructions.
Add interpolated method of handling interlacing.
Provide for conditional compilation of 16-bit support (except for the
initial stripping down to 8-bits when reading a 16-bit PNG datastream).
Switch to the simpler zlib (zlib/libpng) license if legally possible.
Extend pngvalid.c to validate more of the libpng transformations.
*/
project/jni/png/include/png.h
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project/jni/png/include/pngconf.h
+493 -1416
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project/jni/png/png.c
+3701 -317
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project/jni/png/pngerror.c
+693 -163
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project/jni/png/pngget.c
+557 -311
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project/jni/png/pngmem.c
+181 -515
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@@ -1,8 +1,8 @@
/* pngmem.c - stub functions for memory allocation
*
* Last changed in libpng 1.4.6 [January 23, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* Last changed in libpng 1.6.0 [February 14, 2013]
* Copyright (c) 1998-2013 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.)
*
@@ -17,421 +17,26 @@
* identify the replacement functions.
*/
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#include "pngpriv.h"
/* Borland DOS special memory handler */
#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
/* If you change this, be sure to change the one in png.h also */
/* Allocate memory for a png_struct. The malloc and memset can be replaced
by a single call to calloc() if this is thought to improve performance. */
png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, NULL, NULL));
}
/* Alternate version of png_create_struct, for use with user-defined malloc. */
png_voidp /* PRIVATE */
png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
{
#endif /* PNG_USER_MEM_SUPPORTED */
png_size_t size;
png_voidp struct_ptr;
if (type == PNG_STRUCT_INFO)
size = png_sizeof(png_info);
else if (type == PNG_STRUCT_PNG)
size = png_sizeof(png_struct);
else
return (png_get_copyright(NULL));
#ifdef PNG_USER_MEM_SUPPORTED
if (malloc_fn != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)size);
}
else
#endif /* PNG_USER_MEM_SUPPORTED */
struct_ptr = (png_voidp)farmalloc(size);
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
return (struct_ptr);
}
/* Free memory allocated by a png_create_struct() call */
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
/* Free a png_struct */
void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
png_destroy_png_struct(png_structrp png_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, NULL, NULL);
}
/* Free memory allocated by a png_create_struct() call */
void /* PRIVATE */
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp mem_ptr)
{
#endif
if (struct_ptr != NULL)
if (png_ptr != NULL)
{
#ifdef PNG_USER_MEM_SUPPORTED
if (free_fn != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
(*(free_fn))(png_ptr, struct_ptr);
return;
}
#endif /* PNG_USER_MEM_SUPPORTED */
farfree (struct_ptr);
}
}
/* 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);
/* Allocate memory. For reasonable files, size should never exceed
* 64K. However, zlib may allocate more then 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.
*
* Borland seems to have a problem in DOS mode for exactly 64K.
* It gives you a segment with an offset of 8 (perhaps to store its
* memory stuff). zlib doesn't like this at all, so we have to
* detect and deal with it. This code should not be needed in
* Windows or OS/2 modes, and only in 16 bit mode. This code has
* been updated by Alexander Lehmann for version 0.89 to waste less
* memory.
*
* Note that we can't use png_size_t for the "size" declaration,
* since on some systems a png_size_t is a 16-bit quantity, and as a
* result, we would be truncating potentially larger memory requests
* (which should cause a fatal error) and introducing major problems.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
ret = (png_malloc(png_ptr, size));
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
return (ret);
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
if (png_ptr == NULL || size == 0)
return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr->malloc_fn != NULL)
ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
else
ret = (png_malloc_default(png_ptr, size));
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of memory");
return (ret);
}
png_voidp PNGAPI
png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || size == 0)
return (NULL);
#ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L)
{
png_warning(png_ptr, "Cannot Allocate > 64K");
ret = NULL;
}
else
#endif
if (size != (size_t)size)
ret = NULL;
else if (size == (png_uint_32)65536L)
{
if (png_ptr->offset_table == NULL)
{
/* Try to see if we need to do any of this fancy stuff */
ret = farmalloc(size);
if (ret == NULL || ((png_size_t)ret & 0xffff))
{
int num_blocks;
png_uint_32 total_size;
png_bytep table;
int i;
png_byte huge * hptr;
if (ret != NULL)
{
farfree(ret);
ret = NULL;
}
if (png_ptr->zlib_window_bits > 14)
num_blocks = (int)(1 << (png_ptr->zlib_window_bits - 14));
else
num_blocks = 1;
if (png_ptr->zlib_mem_level >= 7)
num_blocks += (int)(1 << (png_ptr->zlib_mem_level - 7));
else
num_blocks++;
total_size = ((png_uint_32)65536L) * (png_uint_32)num_blocks+16;
table = farmalloc(total_size);
if (table == NULL)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of Memory"); /* Note "O", "M" */
else
png_warning(png_ptr, "Out Of Memory");
#endif
return (NULL);
}
if ((png_size_t)table & 0xfff0)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr,
"Farmalloc didn't return normalized pointer");
else
png_warning(png_ptr,
"Farmalloc didn't return normalized pointer");
#endif
return (NULL);
}
png_ptr->offset_table = table;
png_ptr->offset_table_ptr = farmalloc(num_blocks *
png_sizeof(png_bytep));
if (png_ptr->offset_table_ptr == NULL)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out Of memory"); /* Note "O", "m" */
else
png_warning(png_ptr, "Out Of memory");
#endif
return (NULL);
}
hptr = (png_byte huge *)table;
if ((png_size_t)hptr & 0xf)
{
hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L);
hptr = hptr + 16L; /* "hptr += 16L" fails on Turbo C++ 3.0 */
}
for (i = 0; i < num_blocks; i++)
{
png_ptr->offset_table_ptr[i] = (png_bytep)hptr;
hptr = hptr + (png_uint_32)65536L; /* "+=" fails on TC++3.0 */
}
png_ptr->offset_table_number = num_blocks;
png_ptr->offset_table_count = 0;
png_ptr->offset_table_count_free = 0;
}
}
if (png_ptr->offset_table_count >= png_ptr->offset_table_number)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory"); /* Note "o" and "M" */
else
png_warning(png_ptr, "Out of Memory");
#endif
return (NULL);
}
ret = png_ptr->offset_table_ptr[png_ptr->offset_table_count++];
}
else
ret = farmalloc(size);
#ifndef PNG_USER_MEM_SUPPORTED
if (ret == NULL)
{
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of memory"); /* Note "o" and "m" */
else
png_warning(png_ptr, "Out of memory"); /* Note "o" and "m" */
}
#endif
return (ret);
}
/* Free a pointer allocated by png_malloc(). In the default
* configuration, png_ptr is not used, but is passed in case it
* is needed. If ptr is NULL, return without taking any action.
*/
void PNGAPI
png_free(png_structp 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_ptr, ptr);
return;
}
else
png_free_default(png_ptr, ptr);
}
void PNGAPI
png_free_default(png_structp png_ptr, png_voidp ptr)
{
#endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || ptr == NULL)
return;
if (png_ptr->offset_table != NULL)
{
int i;
for (i = 0; i < png_ptr->offset_table_count; i++)
{
if (ptr == png_ptr->offset_table_ptr[i])
{
ptr = NULL;
png_ptr->offset_table_count_free++;
break;
}
}
if (png_ptr->offset_table_count_free == png_ptr->offset_table_count)
{
farfree(png_ptr->offset_table);
farfree(png_ptr->offset_table_ptr);
png_ptr->offset_table = NULL;
png_ptr->offset_table_ptr = NULL;
}
}
if (ptr != NULL)
{
farfree(ptr);
}
}
#else /* Not the Borland DOS special memory handler */
/* Allocate memory for a png_struct or a png_info. The malloc and
memset can be replaced by a single call to calloc() if this is thought
to improve performance noticably. */
png_voidp /* PRIVATE */
png_create_struct(int type)
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_struct_2(type, NULL, NULL));
}
/* Allocate memory for a png_struct or a png_info. The malloc and
memset can be replaced by a single call to calloc() if this is thought
to improve performance noticably. */
png_voidp /* PRIVATE */
png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
{
#endif /* PNG_USER_MEM_SUPPORTED */
png_size_t size;
png_voidp struct_ptr;
if (type == PNG_STRUCT_INFO)
size = png_sizeof(png_info);
else if (type == PNG_STRUCT_PNG)
size = png_sizeof(png_struct);
else
return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
if (malloc_fn != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
struct_ptr = (*(malloc_fn))(png_ptr, size);
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
return (struct_ptr);
}
#endif /* PNG_USER_MEM_SUPPORTED */
#if defined(__TURBOC__) && !defined(__FLAT__)
struct_ptr = (png_voidp)farmalloc(size);
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
struct_ptr = (png_voidp)halloc(size, 1);
# else
struct_ptr = (png_voidp)malloc(size);
# endif
#endif
if (struct_ptr != NULL)
png_memset(struct_ptr, 0, size);
return (struct_ptr);
}
/* Free memory allocated by a png_create_struct() call */
void /* PRIVATE */
png_destroy_struct(png_voidp struct_ptr)
{
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2(struct_ptr, NULL, NULL);
}
/* Free memory allocated by a png_create_struct() call */
void /* PRIVATE */
png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
png_voidp mem_ptr)
{
#endif /* PNG_USER_MEM_SUPPORTED */
if (struct_ptr != NULL)
{
#ifdef PNG_USER_MEM_SUPPORTED
if (free_fn != NULL)
{
png_struct dummy_struct;
png_structp png_ptr = &dummy_struct;
png_ptr->mem_ptr=mem_ptr;
(*(free_fn))(png_ptr, struct_ptr);
return;
}
#endif /* PNG_USER_MEM_SUPPORTED */
#if defined(__TURBOC__) && !defined(__FLAT__)
farfree(struct_ptr);
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
hfree(struct_ptr);
# else
free(struct_ptr);
# endif
#endif
# ifdef PNG_SETJMP_SUPPORTED
/* We may have a jmp_buf left to deallocate. */
png_free_jmpbuf(&dummy_struct);
# endif
}
}
@@ -441,151 +46,211 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
* need to allocate exactly 64K, so whatever you call here must
* have the ability to do that.
*/
png_voidp PNGAPI
png_calloc(png_structp png_ptr, png_alloc_size_t size)
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));
ret = png_malloc(png_ptr, size);
if (ret != NULL)
png_memset(ret,0,(png_size_t)size);
return (ret);
memset(ret, 0, size);
return ret;
}
png_voidp PNGAPI
png_malloc(png_structp png_ptr, png_alloc_size_t size)
/* 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)
{
png_voidp ret;
/* 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.
*/
#ifdef PNG_USER_MEM_SUPPORTED
if (png_ptr == NULL || size == 0)
return (NULL);
if (png_ptr->malloc_fn != NULL)
ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
else
ret = (png_malloc_default(png_ptr, size));
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory");
return (ret);
}
png_voidp PNGAPI
png_malloc_default(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ret;
#endif /* PNG_USER_MEM_SUPPORTED */
if (png_ptr == NULL || size == 0)
return (NULL);
#ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L)
PNG_UNUSED(png_ptr)
#endif
if (size > 0 && size <= PNG_SIZE_MAX
# ifdef PNG_MAX_MALLOC_64K
&& size <= 65536U
# endif
)
{
#ifndef PNG_USER_MEM_SUPPORTED
if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Cannot Allocate > 64K");
#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 NULL;
return malloc((size_t)size); /* checked for truncation above */
}
#endif
/* Check for overflow */
#if defined(__TURBOC__) && !defined(__FLAT__)
if (size != (unsigned long)size)
ret = NULL;
else
ret = farmalloc(size);
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
if (size != (unsigned long)size)
ret = NULL;
else
ret = halloc(size, 1);
# else
if (size != (size_t)size)
ret = NULL;
else
ret = malloc((size_t)size);
# endif
#endif
return NULL;
}
#ifndef PNG_USER_MEM_SUPPORTED
if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
png_error(png_ptr, "Out of Memory");
#endif
/* 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 = nelements; /* known to be > 0 */
return (ret);
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 */
}
/* 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 /* PNG_USER_MEM_SUPPORTED */
/* 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_structp png_ptr, png_voidp ptr)
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_ptr, ptr);
return;
}
png_ptr->free_fn(png_constcast(png_structrp,png_ptr), ptr);
else
png_free_default(png_ptr, ptr);
}
void PNGAPI
png_free_default(png_structp png_ptr, png_voidp 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 /* PNG_USER_MEM_SUPPORTED */
#if defined(__TURBOC__) && !defined(__FLAT__)
farfree(ptr);
#else
# if defined(_MSC_VER) && defined(MAXSEG_64K)
hfree(ptr);
# else
free(ptr);
# endif
#endif
}
#endif /* Not Borland DOS special memory handler */
/* This function was added at libpng version 1.2.3. The png_malloc_warn()
* function will set up png_malloc() to issue a png_warning and return NULL
* instead of issuing a png_error, if it fails to allocate the requested
* memory.
*/
png_voidp PNGAPI
png_malloc_warn(png_structp png_ptr, png_alloc_size_t size)
{
png_voidp ptr;
png_uint_32 save_flags;
if (png_ptr == NULL)
return (NULL);
save_flags = png_ptr->flags;
png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
ptr = (png_voidp)png_malloc((png_structp)png_ptr, size);
png_ptr->flags=save_flags;
return(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_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
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)
@@ -601,11 +266,12 @@ png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
* pointer before png_write_destroy and png_read_destroy are called.
*/
png_voidp PNGAPI
png_get_mem_ptr(png_const_structp png_ptr)
png_get_mem_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
return ((png_voidp)png_ptr->mem_ptr);
return NULL;
return png_ptr->mem_ptr;
}
#endif /* PNG_USER_MEM_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
project/jni/png/pngpread.c
+305 -781
View File
File diff suppressed because it is too large Load Diff
project/jni/png/pngread.c
+3307 -653
View File
File diff suppressed because it is too large Load Diff
project/jni/png/pngrio.c
+17 -62
View File
@@ -1,8 +1,8 @@
/* pngrio.c - functions for data input
*
* Last changed in libpng 1.4.6 [January 14, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* Last changed in libpng 1.6.0 [February 14, 2013]
* Copyright (c) 1998-2013 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.)
*
@@ -18,11 +18,10 @@
* libpng use it at run time with png_set_read_fn(...).
*/
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_READ_SUPPORTED
#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
@@ -30,12 +29,13 @@
* to read more then 64K on a 16 bit machine.
*/
void /* PRIVATE */
png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
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");
}
@@ -46,80 +46,34 @@ png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
* read_data function and use it at run time with png_set_read_fn(), rather
* than changing the library.
*/
#ifndef USE_FAR_KEYWORD
void PNGAPI
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_FILE_p)png_ptr->io_ptr);
check = fread(data, 1, length, png_voidcast(png_FILE_p, png_ptr->io_ptr));
if (check != length)
png_error(png_ptr, "Read Error");
}
#else
/* This is the model-independent version. Since the standard I/O library
can't handle far buffers in the medium and small models, we have to copy
the data.
*/
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
static void PNGAPI
png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_size_t check;
png_byte *n_data;
png_FILE_p io_ptr;
if (png_ptr == NULL)
return;
/* Check if data really is near. If so, use usual code. */
n_data = (png_byte *)CVT_PTR_NOCHECK(data);
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)n_data == data)
{
check = fread(n_data, 1, length, io_ptr);
}
else
{
png_byte buf[NEAR_BUF_SIZE];
png_size_t read, remaining, err;
check = 0;
remaining = length;
do
{
read = MIN(NEAR_BUF_SIZE, remaining);
err = fread(buf, 1, read, io_ptr);
png_memcpy(data, buf, read); /* copy far buffer to near buffer */
if (err != read)
break;
else
check += err;
data += read;
remaining -= read;
}
while (remaining != 0);
}
if ((png_uint_32)check != (png_uint_32)length)
png_error(png_ptr, "read Error");
}
#endif
#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
@@ -130,16 +84,18 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
* be used.
*/
void PNGAPI
png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
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
@@ -151,9 +107,8 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
{
png_ptr->write_data_fn = NULL;
png_warning(png_ptr,
"It's an error to set both read_data_fn and write_data_fn in the ");
png_warning(png_ptr,
"same structure. Resetting write_data_fn to NULL");
"Can't set both read_data_fn and write_data_fn in the"
" same structure");
}
#ifdef PNG_WRITE_FLUSH_SUPPORTED
project/jni/png/pngrtran.c
+2317 -1441
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File diff suppressed because it is too large Load Diff
project/jni/png/pngrutil.c
+2738 -1690
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File diff suppressed because it is too large Load Diff
project/jni/png/pngset.c
+961 -538
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File diff suppressed because it is too large Load Diff
project/jni/png/pngtest.c
+658 -377
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File diff suppressed because it is too large Load Diff
project/jni/png/pngtrans.c
+375 -211
View File
@@ -1,8 +1,8 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
* Last changed in libpng 1.4.6 [January 23, 2011]
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
* Last changed in libpng 1.6.2 [April 25, 2013]
* Copyright (c) 1998-2013 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.)
*
@@ -11,20 +11,20 @@
* and license in png.h
*/
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
#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_structp png_ptr)
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
@@ -32,12 +32,13 @@ png_set_bgr(png_structp png_ptr)
#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
/* Turn on 16 bit byte swapping */
void PNGAPI
png_set_swap(png_structp png_ptr)
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;
}
@@ -46,12 +47,13 @@ png_set_swap(png_structp png_ptr)
#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
/* Turn on pixel packing */
void PNGAPI
png_set_packing(png_structp png_ptr)
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;
@@ -63,12 +65,13 @@ png_set_packing(png_structp png_ptr)
#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
/* Turn on packed pixel swapping */
void PNGAPI
png_set_packswap(png_structp png_ptr)
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;
}
@@ -76,12 +79,13 @@ png_set_packswap(png_structp png_ptr)
#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
void PNGAPI
png_set_shift(png_structp png_ptr, png_color_8p true_bits)
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;
}
@@ -90,7 +94,7 @@ png_set_shift(png_structp png_ptr, png_color_8p true_bits)
#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
defined(PNG_WRITE_INTERLACING_SUPPORTED)
int PNGAPI
png_set_interlace_handling(png_structp png_ptr)
png_set_interlace_handling(png_structrp png_ptr)
{
png_debug(1, "in png_set_interlace handling");
@@ -111,48 +115,101 @@ png_set_interlace_handling(png_structp png_ptr)
* that don't like bytes as parameters.
*/
void PNGAPI
png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
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)
{
# 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;
png_ptr->filler = (png_uint_16)filler;
if (filler_loc == PNG_FILLER_AFTER)
png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
else
png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER;
/* This should probably go in the "do_read_filler" routine.
* I attempted to do that in libpng-1.0.1a but that caused problems
* so I restored it in libpng-1.0.2a
*/
if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{
png_ptr->usr_channels = 4;
}
/* Also I added this in libpng-1.0.2a (what happens when we expand
* a less-than-8-bit grayscale to GA? */
if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY && png_ptr->bit_depth >= 8)
{
png_ptr->usr_channels = 2;
}
}
/* Added to libpng-1.2.7 */
void PNGAPI
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
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);
png_ptr->transformations |= PNG_ADD_ALPHA;
/* The above may fail to do anything. */
if (png_ptr->transformations & PNG_FILLER)
png_ptr->transformations |= PNG_ADD_ALPHA;
}
#endif
@@ -160,12 +217,13 @@ png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
void PNGAPI
png_set_swap_alpha(png_structp png_ptr)
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
@@ -173,24 +231,26 @@ png_set_swap_alpha(png_structp png_ptr)
#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
void PNGAPI
png_set_invert_alpha(png_structp png_ptr)
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_structp png_ptr)
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;
}
@@ -206,8 +266,8 @@ png_do_invert(png_row_infop row_info, png_bytep row)
if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
png_bytep rp = row;
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
png_size_t i;
png_size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i++)
{
@@ -215,36 +275,41 @@ png_do_invert(png_row_infop row_info, png_bytep row)
rp++;
}
}
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
row_info->bit_depth == 8)
{
png_bytep rp = row;
png_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
png_size_t i;
png_size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i+=2)
for (i = 0; i < istop; i += 2)
{
*rp = (png_byte)(~(*rp));
rp+=2;
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_uint_32 i;
png_uint_32 istop = row_info->rowbytes;
png_size_t i;
png_size_t istop = row_info->rowbytes;
for (i = 0; i < istop; i+=4)
for (i = 0; i < istop; i += 4)
{
*rp = (png_byte)(~(*rp));
*(rp+1) = (png_byte)(~(*(rp+1)));
rp+=4;
*(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 */
@@ -252,8 +317,7 @@ png_do_swap(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_swap");
if (
row_info->bit_depth == 16)
if (row_info->bit_depth == 16)
{
png_bytep rp = row;
png_uint_32 i;
@@ -268,6 +332,7 @@ png_do_swap(png_row_infop row_info, png_bytep row)
}
}
#endif
#endif
#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
static PNG_CONST png_byte onebppswaptable[256] = {
@@ -381,19 +446,22 @@ png_do_packswap(png_row_infop row_info, png_bytep row)
{
png_debug(1, "in png_do_packswap");
if (
row_info->bit_depth < 8)
if (row_info->bit_depth < 8)
{
png_bytep rp, end, table;
png_bytep rp;
png_const_bytep end, table;
end = row + row_info->rowbytes;
if (row_info->bit_depth == 1)
table = (png_bytep)onebppswaptable;
table = onebppswaptable;
else if (row_info->bit_depth == 2)
table = (png_bytep)twobppswaptable;
table = twobppswaptable;
else if (row_info->bit_depth == 4)
table = (png_bytep)fourbppswaptable;
table = fourbppswaptable;
else
return;
@@ -405,158 +473,119 @@ png_do_packswap(png_row_infop row_info, png_bytep row)
#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
/* Remove filler or alpha byte(s) */
/* 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_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
{
png_debug(1, "in png_do_strip_filler");
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)
{
png_bytep sp=row;
png_bytep dp=row;
png_uint_32 row_width=row_info->width;
png_uint_32 i;
if ((row_info->color_type == PNG_COLOR_TYPE_RGB ||
(row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
(flags & PNG_FLAG_STRIP_ALPHA))) &&
row_info->channels == 4)
if (row_info->bit_depth == 8)
{
if (row_info->bit_depth == 8)
{
/* This converts from RGBX or RGBA to RGB */
if (flags & PNG_FLAG_FILLER_AFTER)
{
dp+=3; sp+=4;
for (i = 1; i < row_width; i++)
{
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
sp++;
}
}
/* This converts from XRGB or ARGB to RGB */
else
{
for (i = 0; i < row_width; i++)
{
sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
}
}
row_info->pixel_depth = 24;
row_info->rowbytes = row_width * 3;
}
else /* if (row_info->bit_depth == 16) */
{
if (flags & PNG_FLAG_FILLER_AFTER)
{
/* This converts from RRGGBBXX or RRGGBBAA to RRGGBB */
sp += 8; dp += 6;
for (i = 1; i < row_width; i++)
{
/* This could be (although png_memcpy is probably slower):
png_memcpy(dp, sp, 6);
sp += 8;
dp += 6;
*/
if (at_start) /* Skip initial filler */
++sp;
else /* Skip initial channel and, for sp, the filler */
sp += 2, ++dp;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
sp += 2;
}
}
else
{
/* This converts from XXRRGGBB or AARRGGBB to RRGGBB */
for (i = 0; i < row_width; i++)
{
/* This could be (although png_memcpy is probably slower):
png_memcpy(dp, sp, 6);
sp += 8;
dp += 6;
*/
/* For a 1 pixel wide image there is nothing to do */
while (sp < ep)
*dp++ = *sp, sp += 2;
sp+=2;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
*dp++ = *sp++;
}
}
row_info->pixel_depth = 48;
row_info->rowbytes = row_width * 6;
}
row_info->channels = 3;
row_info->pixel_depth = 8;
}
else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY ||
(row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
(flags & PNG_FLAG_STRIP_ALPHA))) &&
row_info->channels == 2)
else if (row_info->bit_depth == 16)
{
if (row_info->bit_depth == 8)
{
/* This converts from GX or GA to G */
if (flags & PNG_FLAG_FILLER_AFTER)
{
for (i = 0; i < row_width; i++)
{
*dp++ = *sp++;
sp++;
}
}
/* This converts from XG or AG to G */
else
{
for (i = 0; i < row_width; i++)
{
sp++;
*dp++ = *sp++;
}
}
row_info->pixel_depth = 8;
row_info->rowbytes = row_width;
}
else /* if (row_info->bit_depth == 16) */
{
if (flags & PNG_FLAG_FILLER_AFTER)
{
/* This converts from GGXX or GGAA to GG */
sp += 4; dp += 2;
for (i = 1; i < row_width; i++)
{
*dp++ = *sp++;
*dp++ = *sp++;
sp += 2;
}
}
else
{
/* This converts from XXGG or AAGG to GG */
for (i = 0; i < row_width; i++)
{
sp += 2;
*dp++ = *sp++;
*dp++ = *sp++;
}
}
row_info->pixel_depth = 16;
row_info->rowbytes = row_width * 2;
}
row_info->channels = 1;
if (at_start) /* 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;
}
if (flags & PNG_FLAG_STRIP_ALPHA)
row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
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) /* 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) /* 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 = dp-row;
}
#endif
@@ -567,8 +596,7 @@ 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))
if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
{
png_uint_32 row_width = row_info->width;
if (row_info->bit_depth == 8)
@@ -585,6 +613,7 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
*(rp + 2) = save;
}
}
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
png_bytep rp;
@@ -598,6 +627,8 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
}
}
}
#ifdef PNG_16BIT_SUPPORTED
else if (row_info->bit_depth == 16)
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB)
@@ -615,6 +646,7 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
*(rp + 5) = save;
}
}
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
png_bytep rp;
@@ -631,47 +663,179 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
}
}
}
#endif
}
}
#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
#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 = (-row_info->pixel_depth * row_info->width) & 7;
png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
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 /* PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED */
#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_structp png_ptr, png_voidp
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_USER_TRANSFORM_PTR_SUPPORTED
#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;
#else
if (user_transform_ptr || user_transform_depth || user_transform_channels)
png_warning(png_ptr,
"This version of libpng does not support user transform info");
#endif
}
#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_structp png_ptr)
png_get_user_transform_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
return (NULL);
#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
return ((png_voidp)png_ptr->user_transform_ptr);
#else
return (NULL);
#endif
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 and
* 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 /* PNG_USER_TRANSFORM_INFO_SUPPORTED */
#endif /* PNG_READ_USER_TRANSFORM_SUPPORTED ||
PNG_WRITE_USER_TRANSFORM_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
project/jni/png/pngwio.c
+30 -107
View File
@@ -1,8 +1,8 @@
/* pngwio.c - functions for data output
*
* Last changed in libpng 1.4.0 [January 3, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* Last changed in libpng 1.6.0 [February 14, 2013]
* Copyright (c) 1998-2013 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.)
*
@@ -18,11 +18,10 @@
* them at run time with png_set_write_fn(...).
*/
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
#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
@@ -31,10 +30,13 @@
*/
void /* PRIVATE */
png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
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, data, length);
(*(png_ptr->write_data_fn))(png_ptr, png_constcast(png_bytep,data),
length);
else
png_error(png_ptr, "Call to NULL write function");
}
@@ -45,70 +47,19 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
* write_data function and use it at run time with png_set_write_fn(), rather
* than changing the library.
*/
#ifndef USE_FAR_KEYWORD
void PNGAPI
void PNGCBAPI
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_uint_32 check;
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");
}
#else
/* This is the model-independent version. Since the standard I/O library
* can't handle far buffers in the medium and small models, we have to copy
* the data.
*/
#define NEAR_BUF_SIZE 1024
#define MIN(a,b) (a <= b ? a : b)
void PNGAPI
png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
{
png_uint_32 check;
png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
png_FILE_p io_ptr;
if (png_ptr == NULL)
return;
/* Check if data really is near. If so, use usual code. */
near_data = (png_byte *)CVT_PTR_NOCHECK(data);
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
if ((png_bytep)near_data == data)
{
check = fwrite(near_data, 1, length, io_ptr);
}
else
{
png_byte buf[NEAR_BUF_SIZE];
png_size_t written, remaining, err;
check = 0;
remaining = length;
do
{
written = MIN(NEAR_BUF_SIZE, remaining);
png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
err = fwrite(buf, 1, written, io_ptr);
if (err != written)
break;
else
check += err;
data += written;
remaining -= written;
}
while (remaining != 0);
}
if (check != length)
png_error(png_ptr, "Write Error");
}
#endif
#endif
/* This function is called to output any data pending writing (normally
@@ -117,23 +68,25 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
*/
#ifdef PNG_WRITE_FLUSH_SUPPORTED
void /* PRIVATE */
png_flush(png_structp png_ptr)
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 PNGAPI
# 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_FILE_p)CVT_PTR((png_ptr->io_ptr));
io_ptr = png_voidcast(png_FILE_p, (png_ptr->io_ptr));
fflush(io_ptr);
}
#endif
# endif
#endif
/* This function allows the application to supply new output functions for
@@ -166,8 +119,8 @@ png_default_flush(png_structp png_ptr)
* *FILE structure.
*/
void PNGAPI
png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
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;
@@ -185,57 +138,27 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
#endif
#ifdef PNG_WRITE_FLUSH_SUPPORTED
#ifdef PNG_STDIO_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
# else
png_ptr->output_flush_fn = output_flush_fn;
#endif
# endif
#endif /* PNG_WRITE_FLUSH_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,
"Attempted to set both read_data_fn and write_data_fn in");
png_warning(png_ptr,
"the same structure. Resetting read_data_fn to NULL");
"Can't set both read_data_fn and write_data_fn in the"
" same structure");
}
}
#ifdef USE_FAR_KEYWORD
#ifdef _MSC_VER
void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
{
void *near_ptr;
void FAR *far_ptr;
FP_OFF(near_ptr) = FP_OFF(ptr);
far_ptr = (void FAR *)near_ptr;
if (check != 0)
if (FP_SEG(ptr) != FP_SEG(far_ptr))
png_error(png_ptr, "segment lost in conversion");
return(near_ptr);
}
# else
void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
{
void *near_ptr;
void FAR *far_ptr;
near_ptr = (void FAR *)ptr;
far_ptr = (void FAR *)near_ptr;
if (check != 0)
if (far_ptr != ptr)
png_error(png_ptr, "segment lost in conversion");
return(near_ptr);
}
# endif
# endif
#endif /* PNG_WRITE_SUPPORTED */
project/jni/png/pngwrite.c
+1464 -592
View File
File diff suppressed because it is too large Load Diff
project/jni/png/pngwtran.c
+137 -69
View File
@@ -1,8 +1,8 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.4.1 [February 25, 2010]
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
* Last changed in libpng 1.6.0 [February 14, 2013]
* Copyright (c) 1998-2013 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.)
*
@@ -11,16 +11,16 @@
* and license in png.h
*/
#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#ifdef PNG_WRITE_SUPPORTED
#include "pngpriv.h"
#ifdef PNG_WRITE_SUPPORTED
#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
/* Transform the data according to the user's wishes. The order of
* transformations is significant.
*/
void /* PRIVATE */
png_do_write_transformations(png_structp png_ptr)
png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
{
png_debug(1, "in png_do_write_transformations");
@@ -30,56 +30,65 @@ png_do_write_transformations(png_structp png_ptr)
#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
if (png_ptr->transformations & PNG_USER_TRANSFORM)
if (png_ptr->write_user_transform_fn != NULL)
(*(png_ptr->write_user_transform_fn)) /* User write transform
(*(png_ptr->write_user_transform_fn)) /* User write transform
function */
(png_ptr, /* png_ptr */
&(png_ptr->row_info), /* row_info: */
/* png_uint_32 width; width of row */
/* png_uint_32 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 */
(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)
png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
png_ptr->flags);
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)
png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
png_do_packswap(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_WRITE_PACK_SUPPORTED
if (png_ptr->transformations & PNG_PACK)
png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1,
(png_uint_32)png_ptr->bit_depth);
png_do_pack(row_info, png_ptr->row_buf + 1,
(png_uint_32)png_ptr->bit_depth);
#endif
#ifdef PNG_WRITE_SWAP_SUPPORTED
if (png_ptr->transformations & PNG_SWAP_BYTES)
png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
png_do_swap(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_WRITE_SHIFT_SUPPORTED
if (png_ptr->transformations & PNG_SHIFT)
png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1,
&(png_ptr->shift));
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)
png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
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)
png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
png_do_write_invert_alpha(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_WRITE_BGR_SUPPORTED
if (png_ptr->transformations & PNG_BGR)
png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
png_do_bgr(row_info, png_ptr->row_buf + 1);
#endif
#ifdef PNG_WRITE_INVERT_SUPPORTED
if (png_ptr->transformations & PNG_INVERT_MONO)
png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
png_do_invert(row_info, png_ptr->row_buf + 1);
#endif
}
@@ -114,9 +123,12 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
{
if (*sp != 0)
v |= mask;
sp++;
if (mask > 1)
mask >>= 1;
else
{
mask = 0x80;
@@ -125,10 +137,13 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
v = 0;
}
}
if (mask != 0x80)
*dp = (png_byte)v;
break;
}
case 2:
{
png_bytep sp, dp;
@@ -140,12 +155,14 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
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;
@@ -153,14 +170,19 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
dp++;
v = 0;
}
else
shift -= 2;
sp++;
}
if (shift != 6)
*dp = (png_byte)v;
break;
}
case 4:
{
png_bytep sp, dp;
@@ -172,6 +194,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
dp = row;
shift = 4;
v = 0;
for (i = 0; i < row_width; i++)
{
png_byte value;
@@ -186,23 +209,27 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
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);
row_info->width);
}
}
#endif
@@ -216,12 +243,12 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
* data to 0 to 15.
*/
void /* PRIVATE */
png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
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)
if (row_info->color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift_start[4], shift_dec[4];
int channels = 0;
@@ -231,19 +258,23 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
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)
{
shift_start[channels] = row_info->bit_depth - bit_depth->alpha;
@@ -255,33 +286,40 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
if (row_info->bit_depth < 8)
{
png_bytep bp = row;
png_uint_32 i;
png_byte mask;
png_uint_32 row_bytes = row_info->rowbytes;
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++)
{
png_uint_16 v;
int j;
unsigned int v, out;
v = *bp;
*bp = 0;
out = 0;
for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0])
{
if (j > 0)
*bp |= (png_byte)((v << j) & 0xff);
out |= v << j;
else
*bp |= (png_byte)((v >> (-j)) & mask);
out |= (v >> (-j)) & mask;
}
*bp = (png_byte)(out & 0xff);
}
}
else if (row_info->bit_depth == 8)
{
png_bytep bp = row;
@@ -291,21 +329,26 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
for (i = 0; i < istop; i++, bp++)
{
png_uint_16 v;
const unsigned int c = i%channels;
int j;
int c = (int)(i%channels);
unsigned int v, out;
v = *bp;
*bp = 0;
out = 0;
for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
{
if (j > 0)
*bp |= (png_byte)((v << j) & 0xff);
out |= v << j;
else
*bp |= (png_byte)((v >> (-j)) & 0xff);
out |= v >> (-j);
}
*bp = (png_byte)(out & 0xff);
}
}
else
{
png_bytep bp;
@@ -314,20 +357,22 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
for (bp = row, i = 0; i < istop; i++)
{
int c = (int)(i%channels);
png_uint_16 value, v;
const unsigned int c = i%channels;
int j;
unsigned int value, v;
v = (png_uint_16)(((png_uint_16)(*bp) << 8) + *(bp + 1));
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 |= (png_uint_16)((v << j) & (png_uint_16)0xffff);
value |= v << j;
else
value |= (png_uint_16)((v >> (-j)) & (png_uint_16)0xffff);
value |= v >> (-j);
}
*bp++ = (png_byte)(value >> 8);
*bp++ = (png_byte)((value >> 8) & 0xff);
*bp++ = (png_byte)(value & 0xff);
}
}
@@ -344,12 +389,13 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
/* This converts from ARGB to RGBA */
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++);
@@ -359,9 +405,11 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = save;
}
}
/* This converts from AARRGGBB to RRGGBBAA */
#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;
@@ -381,12 +429,14 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = save[1];
}
}
#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
/* This converts from AG to GA */
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;
@@ -398,9 +448,11 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = save;
}
}
/* This converts from AAGG to GGAA */
#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;
@@ -416,6 +468,7 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = save[1];
}
}
#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
}
}
@@ -430,12 +483,13 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
{
if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
{
/* This inverts the alpha channel in RGBA */
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
@@ -447,9 +501,11 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = (png_byte)(255 - *(sp++));
}
}
/* This inverts the alpha channel in RRGGBBAA */
#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;
@@ -469,12 +525,14 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = (png_byte)(255 - *(sp++));
}
}
#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
{
/* This inverts the alpha channel in GA */
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;
@@ -485,9 +543,11 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = (png_byte)(255 - *(sp++));
}
}
/* This inverts the alpha channel in GGAA */
#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;
@@ -503,10 +563,12 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = (png_byte)(255 - *(sp++));
}
}
#endif /* PNG_WRITE_16BIT_SUPPORTED */
}
}
}
#endif
#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
#ifdef PNG_MNG_FEATURES_SUPPORTED
/* Undoes intrapixel differencing */
@@ -515,8 +577,7 @@ 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))
if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
{
int bytes_per_pixel;
png_uint_32 row_width = row_info->width;
@@ -527,17 +588,21 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
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))&0xff);
*(rp+2) = (png_byte)((*(rp+2) - *(rp+1))&0xff);
*(rp) = (png_byte)((*rp - *(rp + 1)) & 0xff);
*(rp + 2) = (png_byte)((*(rp + 2) - *(rp + 1)) & 0xff);
}
}
#ifdef PNG_WRITE_16BIT_SUPPORTED
else if (row_info->bit_depth == 16)
{
png_bytep rp;
@@ -545,24 +610,27 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
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 = (*(rp ) << 8) | *(rp+1);
png_uint_32 s1 = (*(rp+2) << 8) | *(rp+3);
png_uint_32 s2 = (*(rp+4) << 8) | *(rp+5);
png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
png_uint_32 s2 = (*(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) & 0xff);
*(rp+1) = (png_byte)(red & 0xff);
*(rp+4) = (png_byte)((blue >> 8) & 0xff);
*(rp+5) = (png_byte)(blue & 0xff);
*(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 /* PNG_WRITE_16BIT_SUPPORTED */
}
}
#endif /* PNG_MNG_FEATURES_SUPPORTED */
project/jni/png/pngwutil.c
+1283 -1048
View File
File diff suppressed because it is too large Load Diff
project/jni/sdl2_image/Android.mk
+24
View File
@@ -0,0 +1,24 @@
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := sdl2_image
LOCAL_C_INCLUDES := $(LOCAL_PATH) $(LOCAL_PATH)/../jpeg/include $(LOCAL_PATH)/../png/include $(LOCAL_PATH)/../sdl-$(SDL_VERSION)/include $(LOCAL_PATH)/include
LOCAL_CFLAGS := -O3 \
-DLOAD_JPG -DLOAD_PNG -DLOAD_BMP -DLOAD_GIF -DLOAD_LBM \
-DLOAD_PCX -DLOAD_PNM -DLOAD_TGA -DLOAD_XCF -DLOAD_XPM \
-DLOAD_XV
LOCAL_CPP_EXTENSION := .cpp
LOCAL_SRC_FILES := $(notdir $(wildcard $(LOCAL_PATH)/*.c))
LOCAL_STATIC_LIBRARIES := png jpeg
LOCAL_SHARED_LIBRARIES := sdl-$(SDL_VERSION)
LOCAL_LDLIBS := -lz
include $(BUILD_SHARED_LIBRARY)
project/jni/sdl2_image/CHANGES.txt
+114
View File
@@ -0,0 +1,114 @@
2.0.0:
Sam Lantinga - Sun Jun 2 22:25:31 PDT 2013
* Added PNG save support based on miniz.c by Rich Geldreich
IMG_SavePNG(), IMG_SavePNG_RW()
Sam Lantinga - Sat Jun 1 19:11:26 PDT 2013
* Updated for SDL 2.0 release
Sam Lantinga - Sat Mar 23 13:36:51 PDT 2013
* Fixed bug setting colorkey for indexed PNG images
Torsten Stremlau - Sun Mar 10 10:19:25 PDT 2013
* Added support for alpha and lossless WEBP images
1.2.12:
mscott - 2012-02-06 19:40:23 PST
* Fixed image corruption when using ImageIO framework
Sylvain - Thu Nov 22 13:09:59 PST 2012
* Added extended XPM color table (disabled by default in IMG_xpm.c)
Sam Lantinga - Thu Jan 19 23:18:09 EST 2012
* Fixed regression in 1.2.11 loading 8-bit PNG images with libpng
1.2.11:
Sam Lantinga - Sat Jan 14 17:54:38 EST 2012
* Fixed loading 8-bit PNG images on Mac OS X
Sam Lantinga - Sat Dec 31 09:35:40 EST 2011
* SDL_image is now under the zlib license
Michael Bonfils - Mon Nov 28 21:46:00 EST 2011
* Added WEBP image support
Thomas Klausner - Wed Jan 19 19:31:25 PST 2011
* Fixed compiling with libpng 1.4
Sam Lantinga - Mon Jan 10 12:09:57 2011 -0800
* Added Android.mk to build on the Android platform
Sam Lantinga - Mon May 10 22:42:53 PDT 2010
* Fixed loading HAM6 images with stencil mask
Mark Tucker - Fri, 27 Nov 2009 12:38:21 -0500
* Fixed bug loading 15 and 16 bit BMP images
1.2.10:
Sam Lantinga - Sat Nov 14 11:22:14 PST 2009
* Fixed bug loading multiple images
1.2.9:
Sam Lantinga - Tue Nov 10 00:29:20 PST 2009
* Fixed alpha premultiplication on Mac OS X and iPhone OS
Sam Lantinga - Sun Nov 8 07:52:11 PST 2009
* Fixed checking for IMG_Init() return value in image loaders
1.2.8:
Sam Lantinga - Sun Oct 4 13:12:54 PDT 2009
* Added support for uncompressed PCX files
Mason Wheeler - 2009-06-10 06:29:45 PDT
* Added IMG_Init()/IMG_Quit() to prevent constantly loading and unloading DLLs
Couriersud - Mon, 12 Jan 2009 17:21:13 -0800
* Added support for ICO and CUR image files
Eric Wing - Fri, 2 Jan 2009 02:01:16 -0800
* Added ImageIO loading infrastructure for Mac OS X
* Added UIImage loading infrastructure for iPhone / iPod Touch
1.2.7:
Sam Lantinga - Sun Nov 2 15:08:27 PST 2008
* Fixed buffer overflow in BMP loading code, discovered by j00ru//vx
Sam Lantinga - Fri Dec 28 08:34:54 PST 2007
* Fixed buffer overflow in GIF loading code, discovered by Michael Skladnikiewicz
1.2.6:
Sam lantinga - Wed Jul 18 00:30:32 PDT 2007
* Improved detection of libjpeg, libpng, and libtiff at configure time
* PNG and TIFF images are correctly identified even if dynamic libraries
to load them aren't available.
* Fixed loading of TIFF images using libtiff 3.6
Sam Lantinga - Thu Jul 5 07:52:35 2007
* Fixed static linking with libjpeg
Michael Koch - Tue Feb 13 10:09:17 2007
* Fixed crash in IMG_ReadXPMFromArray()
1.2.5:
Maurizio Monge - Sun May 14 13:57:32 PDT 2006
* Fixed loading BMP palettes at unusual offsets
Sam Lantinga - Thu May 11 21:51:19 PDT 2006
* Added support for dynamically loading libjpeg, libpng, and libtiff.
Sam Lantinga - Sun Apr 30 01:48:40 PDT 2006
* Added gcc-fat.sh for generating Universal binaries on Mac OS X
* Updated libtool support to version 1.5.22
Sam Lantinga - Sat Feb 4 15:17:44 PST 2006
* Added support for XV thumbnail images
Gautier Portet - Fri, 19 Mar 2004 17:35:12 +0100
* Added support for 32-bit BMP files with alpha
1.2.4:
Pierre G. Richard - Fri, 30 Jul 2004 11:13:11 +0000 (UTC)
* Added support for RLE encoded BMP files
Marc Le Douarain - Fri, 26 Dec 2003 18:23:42 +0100
* Added EHB and HAM mode support to the ILBM loader
Sam Lantinga - Wed Nov 19 00:23:44 PST 2003
* Updated libtool support for new mingw32 DLL build process
Holger Schemel - Mon, 04 Aug 2003 21:50:52 +0200
* Fixed crash loading certain PCX images
Kyle Davenport - Sat, 19 Apr 2003 17:13:31 -0500
* Added .la files to the development RPM, fixing RPM build on RedHat 8
1.2.3:
Ryan C. Gordon - Sat, 8 Feb 2003 09:36:33 -0500
* Fixed memory leak with non-seekable SDL_RWops
Marc Le Douarain - Sun, 22 Dec 2002 22:59:51 +0100
* Added 24-bit support to the ILBM format loader
Sam Lantinga - Sun Oct 20 20:55:46 PDT 2002
* Added shared library support for MacOS X
Pete Shinners - Thu Jun 20 10:05:54 PDT 2002
* The JPEG loader can now load EXIF format JPEG images
Dag-Erling Smorgrav - Thu May 2 19:09:48 PDT 2002
* The XCF loader now ignores invisible layers and channels
1.2.2:
Sam Lantinga - Sat Apr 13 07:49:47 PDT 2002
* Updated autogen.sh for new versions of automake
* Specify the SDL API calling convention (C by default)
project/jni/sdl2_image/COPYING.txt
+20
View File
@@ -0,0 +1,20 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
project/jni/sdl2_image/IMG.c
+239
View File
@@ -0,0 +1,239 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* A simple library to load images of various formats as SDL surfaces */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "SDL_image.h"
#define ARRAYSIZE(a) (sizeof(a) / sizeof((a)[0]))
/* Table of image detection and loading functions */
static struct {
char *type;
int (SDLCALL *is)(SDL_RWops *src);
SDL_Surface *(SDLCALL *load)(SDL_RWops *src);
} supported[] = {
/* keep magicless formats first */
{ "TGA", NULL, IMG_LoadTGA_RW },
{ "CUR", IMG_isCUR, IMG_LoadCUR_RW },
{ "ICO", IMG_isICO, IMG_LoadICO_RW },
{ "BMP", IMG_isBMP, IMG_LoadBMP_RW },
{ "GIF", IMG_isGIF, IMG_LoadGIF_RW },
{ "JPG", IMG_isJPG, IMG_LoadJPG_RW },
{ "LBM", IMG_isLBM, IMG_LoadLBM_RW },
{ "PCX", IMG_isPCX, IMG_LoadPCX_RW },
{ "PNG", IMG_isPNG, IMG_LoadPNG_RW },
{ "PNM", IMG_isPNM, IMG_LoadPNM_RW }, /* P[BGP]M share code */
{ "TIF", IMG_isTIF, IMG_LoadTIF_RW },
{ "XCF", IMG_isXCF, IMG_LoadXCF_RW },
{ "XPM", IMG_isXPM, IMG_LoadXPM_RW },
{ "XV", IMG_isXV, IMG_LoadXV_RW },
{ "WEBP", IMG_isWEBP, IMG_LoadWEBP_RW },
};
const SDL_version *IMG_Linked_Version(void)
{
static SDL_version linked_version;
SDL_IMAGE_VERSION(&linked_version);
return(&linked_version);
}
extern int IMG_InitJPG();
extern void IMG_QuitJPG();
extern int IMG_InitPNG();
extern void IMG_QuitPNG();
extern int IMG_InitTIF();
extern void IMG_QuitTIF();
extern int IMG_InitWEBP();
extern void IMG_QuitWEBP();
static int initialized = 0;
int IMG_Init(int flags)
{
int result = 0;
if (flags & IMG_INIT_JPG) {
if ((initialized & IMG_INIT_JPG) || IMG_InitJPG() == 0) {
result |= IMG_INIT_JPG;
}
}
if (flags & IMG_INIT_PNG) {
if ((initialized & IMG_INIT_PNG) || IMG_InitPNG() == 0) {
result |= IMG_INIT_PNG;
}
}
if (flags & IMG_INIT_TIF) {
if ((initialized & IMG_INIT_TIF) || IMG_InitTIF() == 0) {
result |= IMG_INIT_TIF;
}
}
if (flags & IMG_INIT_WEBP) {
if ((initialized & IMG_INIT_WEBP) || IMG_InitWEBP() == 0) {
result |= IMG_INIT_WEBP;
}
}
initialized |= result;
return (initialized);
}
void IMG_Quit()
{
if (initialized & IMG_INIT_JPG) {
IMG_QuitJPG();
}
if (initialized & IMG_INIT_PNG) {
IMG_QuitPNG();
}
if (initialized & IMG_INIT_TIF) {
IMG_QuitTIF();
}
if (initialized & IMG_INIT_WEBP) {
IMG_QuitWEBP();
}
initialized = 0;
}
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* Load an image from a file */
SDL_Surface *IMG_Load(const char *file)
{
SDL_RWops *src = SDL_RWFromFile(file, "rb");
const char *ext = strrchr(file, '.');
if(ext) {
ext++;
}
if(!src) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
return IMG_LoadTyped_RW(src, 1, ext);
}
#endif
/* Load an image from an SDL datasource (for compatibility) */
SDL_Surface *IMG_Load_RW(SDL_RWops *src, int freesrc)
{
return IMG_LoadTyped_RW(src, freesrc, NULL);
}
/* Portable case-insensitive string compare function */
static int IMG_string_equals(const char *str1, const char *str2)
{
while ( *str1 && *str2 ) {
if ( toupper((unsigned char)*str1) !=
toupper((unsigned char)*str2) )
break;
++str1;
++str2;
}
return (!*str1 && !*str2);
}
/* Load an image from an SDL datasource, optionally specifying the type */
SDL_Surface *IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, const char *type)
{
int i;
SDL_Surface *image;
/* Make sure there is something to do.. */
if ( src == NULL ) {
IMG_SetError("Passed a NULL data source");
return(NULL);
}
/* See whether or not this data source can handle seeking */
if ( SDL_RWseek(src, 0, RW_SEEK_CUR) < 0 ) {
IMG_SetError("Can't seek in this data source");
if(freesrc)
SDL_RWclose(src);
return(NULL);
}
/* Detect the type of image being loaded */
image = NULL;
for ( i=0; i < ARRAYSIZE(supported); ++i ) {
if(supported[i].is) {
if(!supported[i].is(src))
continue;
} else {
/* magicless format */
if(!type
|| !IMG_string_equals(type, supported[i].type))
continue;
}
#ifdef DEBUG_IMGLIB
fprintf(stderr, "IMGLIB: Loading image as %s\n",
supported[i].type);
#endif
image = supported[i].load(src);
if(freesrc)
SDL_RWclose(src);
return image;
}
if ( freesrc ) {
SDL_RWclose(src);
}
IMG_SetError("Unsupported image format");
return NULL;
}
#if SDL_VERSION_ATLEAST(2,0,0)
SDL_Texture *IMG_LoadTexture(SDL_Renderer *renderer, const char *file)
{
SDL_Texture *texture = NULL;
SDL_Surface *surface = IMG_Load(file);
if (surface) {
texture = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
}
return texture;
}
SDL_Texture *IMG_LoadTexture_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc)
{
SDL_Texture *texture = NULL;
SDL_Surface *surface = IMG_Load_RW(src, freesrc);
if (surface) {
texture = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
}
return texture;
}
SDL_Texture *IMG_LoadTextureTyped_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc, const char *type)
{
SDL_Texture *texture = NULL;
SDL_Surface *surface = IMG_LoadTyped_RW(src, freesrc, type);
if (surface) {
texture = SDL_CreateTextureFromSurface(renderer, surface);
SDL_FreeSurface(surface);
}
return texture;
}
#endif /* SDL 2.0 */
project/jni/sdl2_image/IMG_bmp.c
+892
View File
@@ -0,0 +1,892 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if (!defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)) || !defined(BMP_USES_IMAGEIO)
/* This is a BMP image file loading framework
*
* ICO/CUR file support is here as well since it uses similar internal
* representation
*
* A good test suite of BMP images is available at:
* http://entropymine.com/jason/bmpsuite/bmpsuite/html/bmpsuite.html
*/
#include <stdio.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_BMP
/* See if an image is contained in a data source */
int IMG_isBMP(SDL_RWops *src)
{
Sint64 start;
int is_BMP;
char magic[2];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_BMP = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if ( SDL_strncmp(magic, "BM", 2) == 0 ) {
is_BMP = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_BMP);
}
static int IMG_isICOCUR(SDL_RWops *src, int type)
{
Sint64 start;
int is_ICOCUR;
/* The Win32 ICO file header (14 bytes) */
Uint16 bfReserved;
Uint16 bfType;
Uint16 bfCount;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_ICOCUR = 0;
bfReserved = SDL_ReadLE16(src);
bfType = SDL_ReadLE16(src);
bfCount = SDL_ReadLE16(src);
if ((bfReserved == 0) && (bfType == type) && (bfCount != 0))
is_ICOCUR = 1;
SDL_RWseek(src, start, RW_SEEK_SET);
return (is_ICOCUR);
}
int IMG_isICO(SDL_RWops *src)
{
return IMG_isICOCUR(src, 1);
}
int IMG_isCUR(SDL_RWops *src)
{
return IMG_isICOCUR(src, 2);
}
#include "SDL_error.h"
#include "SDL_video.h"
#include "SDL_endian.h"
/* Compression encodings for BMP files */
#ifndef BI_RGB
#define BI_RGB 0
#define BI_RLE8 1
#define BI_RLE4 2
#define BI_BITFIELDS 3
#endif
static int readRlePixels(SDL_Surface * surface, SDL_RWops * src, int isRle8)
{
/*
| Sets the surface pixels from src. A bmp image is upside down.
*/
int pitch = surface->pitch;
int height = surface->h;
Uint8 *start = (Uint8 *)surface->pixels;
Uint8 *end = start + (height*pitch);
Uint8 *bits = end-pitch, *spot;
int ofs = 0;
Uint8 ch;
Uint8 needsPad;
#define COPY_PIXEL(x) spot = &bits[ofs++]; if(spot >= start && spot < end) *spot = (x)
for (;;) {
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
/*
| encoded mode starts with a run length, and then a byte
| with two colour indexes to alternate between for the run
*/
if ( ch ) {
Uint8 pixel;
if ( !SDL_RWread(src, &pixel, 1, 1) ) return 1;
if ( isRle8 ) { /* 256-color bitmap, compressed */
do {
COPY_PIXEL(pixel);
} while (--ch);
} else { /* 16-color bitmap, compressed */
Uint8 pixel0 = pixel >> 4;
Uint8 pixel1 = pixel & 0x0F;
for (;;) {
COPY_PIXEL(pixel0); /* even count, high nibble */
if (!--ch) break;
COPY_PIXEL(pixel1); /* odd count, low nibble */
if (!--ch) break;
}
}
} else {
/*
| A leading zero is an escape; it may signal the end of the bitmap,
| a cursor move, or some absolute data.
| zero tag may be absolute mode or an escape
*/
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
switch (ch) {
case 0: /* end of line */
ofs = 0;
bits -= pitch; /* go to previous */
break;
case 1: /* end of bitmap */
return 0; /* success! */
case 2: /* delta */
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
ofs += ch;
if ( !SDL_RWread(src, &ch, 1, 1) ) return 1;
bits -= (ch * pitch);
break;
default: /* no compression */
if (isRle8) {
needsPad = ( ch & 1 );
do {
Uint8 pixel;
if ( !SDL_RWread(src, &pixel, 1, 1) ) return 1;
COPY_PIXEL(pixel);
} while (--ch);
} else {
needsPad = ( ((ch+1)>>1) & 1 ); /* (ch+1)>>1: bytes size */
for (;;) {
Uint8 pixel;
if ( !SDL_RWread(src, &pixel, 1, 1) ) return 1;
COPY_PIXEL(pixel >> 4);
if (!--ch) break;
COPY_PIXEL(pixel & 0x0F);
if (!--ch) break;
}
}
/* pad at even boundary */
if ( needsPad && !SDL_RWread(src, &ch, 1, 1) ) return 1;
break;
}
}
}
}
static void CorrectAlphaChannel(SDL_Surface *surface)
{
/* Check to see if there is any alpha channel data */
SDL_bool hasAlpha = SDL_FALSE;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int alphaChannelOffset = 0;
#else
int alphaChannelOffset = 3;
#endif
Uint8 *alpha = ((Uint8*)surface->pixels) + alphaChannelOffset;
Uint8 *end = alpha + surface->h * surface->pitch;
while (alpha < end) {
if (*alpha != 0) {
hasAlpha = SDL_TRUE;
break;
}
alpha += 4;
}
if (!hasAlpha) {
alpha = ((Uint8*)surface->pixels) + alphaChannelOffset;
while (alpha < end) {
*alpha = SDL_ALPHA_OPAQUE;
alpha += 4;
}
}
}
static SDL_Surface *LoadBMP_RW (SDL_RWops *src, int freesrc)
{
SDL_bool was_error;
Sint64 fp_offset;
int bmpPitch;
int i, pad;
SDL_Surface *surface;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
SDL_Palette *palette;
Uint8 *bits;
Uint8 *top, *end;
SDL_bool topDown;
int ExpandBMP;
SDL_bool correctAlpha = SDL_FALSE;
/* The Win32 BMP file header (14 bytes) */
char magic[2];
Uint32 bfSize;
Uint16 bfReserved1;
Uint16 bfReserved2;
Uint32 bfOffBits;
/* The Win32 BITMAPINFOHEADER struct (40 bytes) */
Uint32 biSize;
Sint32 biWidth;
Sint32 biHeight;
Uint16 biPlanes;
Uint16 biBitCount;
Uint32 biCompression;
Uint32 biSizeImage;
Sint32 biXPelsPerMeter;
Sint32 biYPelsPerMeter;
Uint32 biClrUsed;
Uint32 biClrImportant;
/* Make sure we are passed a valid data source */
surface = NULL;
was_error = SDL_FALSE;
if ( src == NULL ) {
was_error = SDL_TRUE;
goto done;
}
/* Read in the BMP file header */
fp_offset = SDL_RWtell(src);
SDL_ClearError();
if ( SDL_RWread(src, magic, 1, 2) != 2 ) {
SDL_Error(SDL_EFREAD);
was_error = SDL_TRUE;
goto done;
}
if ( SDL_strncmp(magic, "BM", 2) != 0 ) {
IMG_SetError("File is not a Windows BMP file");
was_error = SDL_TRUE;
goto done;
}
bfSize = SDL_ReadLE32(src);
bfReserved1 = SDL_ReadLE16(src);
bfReserved2 = SDL_ReadLE16(src);
bfOffBits = SDL_ReadLE32(src);
/* Read the Win32 BITMAPINFOHEADER */
biSize = SDL_ReadLE32(src);
if ( biSize == 12 ) {
biWidth = (Uint32)SDL_ReadLE16(src);
biHeight = (Uint32)SDL_ReadLE16(src);
biPlanes = SDL_ReadLE16(src);
biBitCount = SDL_ReadLE16(src);
biCompression = BI_RGB;
biSizeImage = 0;
biXPelsPerMeter = 0;
biYPelsPerMeter = 0;
biClrUsed = 0;
biClrImportant = 0;
} else {
biWidth = SDL_ReadLE32(src);
biHeight = SDL_ReadLE32(src);
biPlanes = SDL_ReadLE16(src);
biBitCount = SDL_ReadLE16(src);
biCompression = SDL_ReadLE32(src);
biSizeImage = SDL_ReadLE32(src);
biXPelsPerMeter = SDL_ReadLE32(src);
biYPelsPerMeter = SDL_ReadLE32(src);
biClrUsed = SDL_ReadLE32(src);
biClrImportant = SDL_ReadLE32(src);
}
if (biHeight < 0) {
topDown = SDL_TRUE;
biHeight = -biHeight;
} else {
topDown = SDL_FALSE;
}
/* Check for read error */
if ( strcmp(SDL_GetError(), "") != 0 ) {
was_error = SDL_TRUE;
goto done;
}
/* Expand 1 and 4 bit bitmaps to 8 bits per pixel */
switch (biBitCount) {
case 1:
case 4:
ExpandBMP = biBitCount;
biBitCount = 8;
break;
default:
ExpandBMP = 0;
break;
}
/* RLE4 and RLE8 BMP compression is supported */
Rmask = Gmask = Bmask = Amask = 0;
switch (biCompression) {
case BI_RGB:
/* If there are no masks, use the defaults */
if ( bfOffBits == (14+biSize) ) {
/* Default values for the BMP format */
switch (biBitCount) {
case 15:
case 16:
Rmask = 0x7C00;
Gmask = 0x03E0;
Bmask = 0x001F;
break;
case 24:
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
#else
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
#endif
break;
case 32:
/* We don't know if this has alpha channel or not */
correctAlpha = SDL_TRUE;
Amask = 0xFF000000;
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
break;
default:
break;
}
break;
}
/* Fall through -- read the RGB masks */
default:
switch (biBitCount) {
case 15:
case 16:
Rmask = SDL_ReadLE32(src);
Gmask = SDL_ReadLE32(src);
Bmask = SDL_ReadLE32(src);
break;
case 32:
Rmask = SDL_ReadLE32(src);
Gmask = SDL_ReadLE32(src);
Bmask = SDL_ReadLE32(src);
Amask = SDL_ReadLE32(src);
break;
default:
break;
}
break;
}
/* Create a compatible surface, note that the colors are RGB ordered */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
biWidth, biHeight, biBitCount, Rmask, Gmask, Bmask, Amask);
if ( surface == NULL ) {
was_error = SDL_TRUE;
goto done;
}
/* Load the palette, if any */
palette = (surface->format)->palette;
if ( palette ) {
if ( SDL_RWseek(src, fp_offset+14+biSize, RW_SEEK_SET) < 0 ) {
SDL_Error(SDL_EFSEEK);
was_error = SDL_TRUE;
goto done;
}
/*
| guich: always use 1<<bpp b/c some bitmaps can bring wrong information
| for colorsUsed
*/
/* if ( biClrUsed == 0 ) { */
biClrUsed = 1 << biBitCount;
/* } */
if ( biSize == 12 ) {
for ( i = 0; i < (int)biClrUsed; ++i ) {
SDL_RWread(src, &palette->colors[i].b, 1, 1);
SDL_RWread(src, &palette->colors[i].g, 1, 1);
SDL_RWread(src, &palette->colors[i].r, 1, 1);
palette->colors[i].a = SDL_ALPHA_OPAQUE;
}
} else {
for ( i = 0; i < (int)biClrUsed; ++i ) {
SDL_RWread(src, &palette->colors[i].b, 1, 1);
SDL_RWread(src, &palette->colors[i].g, 1, 1);
SDL_RWread(src, &palette->colors[i].r, 1, 1);
SDL_RWread(src, &palette->colors[i].a, 1, 1);
/* According to Microsoft documentation, the fourth element
is reserved and must be zero, so we shouldn't treat it as
alpha.
*/
palette->colors[i].a = SDL_ALPHA_OPAQUE;
}
}
palette->ncolors = biClrUsed;
}
/* Read the surface pixels. Note that the bmp image is upside down */
if ( SDL_RWseek(src, fp_offset+bfOffBits, RW_SEEK_SET) < 0 ) {
SDL_Error(SDL_EFSEEK);
was_error = SDL_TRUE;
goto done;
}
if ((biCompression == BI_RLE4) || (biCompression == BI_RLE8)) {
was_error = (SDL_bool)readRlePixels(surface, src, biCompression == BI_RLE8);
if (was_error) IMG_SetError("Error reading from BMP");
goto done;
}
top = (Uint8 *)surface->pixels;
end = (Uint8 *)surface->pixels+(surface->h*surface->pitch);
switch (ExpandBMP) {
case 1:
bmpPitch = (biWidth + 7) >> 3;
pad = (((bmpPitch)%4) ? (4-((bmpPitch)%4)) : 0);
break;
case 4:
bmpPitch = (biWidth + 1) >> 1;
pad = (((bmpPitch)%4) ? (4-((bmpPitch)%4)) : 0);
break;
default:
pad = ((surface->pitch%4) ?
(4-(surface->pitch%4)) : 0);
break;
}
if ( topDown ) {
bits = top;
} else {
bits = end - surface->pitch;
}
while ( bits >= top && bits < end ) {
switch (ExpandBMP) {
case 1:
case 4: {
Uint8 pixel = 0;
int shift = (8-ExpandBMP);
for ( i=0; i<surface->w; ++i ) {
if ( i%(8/ExpandBMP) == 0 ) {
if ( !SDL_RWread(src, &pixel, 1, 1) ) {
IMG_SetError("Error reading from BMP");
was_error = SDL_TRUE;
goto done;
}
}
*(bits+i) = (pixel>>shift);
pixel <<= ExpandBMP;
} }
break;
default:
if ( SDL_RWread(src, bits, 1, surface->pitch) != surface->pitch ) {
SDL_Error(SDL_EFREAD);
was_error = SDL_TRUE;
goto done;
}
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
/* Byte-swap the pixels if needed. Note that the 24bpp
case has already been taken care of above. */
switch(biBitCount) {
case 15:
case 16: {
Uint16 *pix = (Uint16 *)bits;
for(i = 0; i < surface->w; i++)
pix[i] = SDL_Swap16(pix[i]);
break;
}
case 32: {
Uint32 *pix = (Uint32 *)bits;
for(i = 0; i < surface->w; i++)
pix[i] = SDL_Swap32(pix[i]);
break;
}
}
#endif
break;
}
/* Skip padding bytes, ugh */
if ( pad ) {
Uint8 padbyte;
for ( i=0; i<pad; ++i ) {
SDL_RWread(src, &padbyte, 1, 1);
}
}
if ( topDown ) {
bits += surface->pitch;
} else {
bits -= surface->pitch;
}
}
if (correctAlpha) {
CorrectAlphaChannel(surface);
}
done:
if ( was_error ) {
if ( src ) {
SDL_RWseek(src, fp_offset, RW_SEEK_SET);
}
if ( surface ) {
SDL_FreeSurface(surface);
}
surface = NULL;
}
if ( freesrc && src ) {
SDL_RWclose(src);
}
return(surface);
}
static Uint8
SDL_Read8(SDL_RWops * src)
{
Uint8 value;
SDL_RWread(src, &value, 1, 1);
return (value);
}
static SDL_Surface *
LoadICOCUR_RW(SDL_RWops * src, int type, int freesrc)
{
SDL_bool was_error;
Sint64 fp_offset;
int bmpPitch;
int i, pad;
SDL_Surface *surface;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint8 *bits;
int ExpandBMP;
int maxCol = 0;
int icoOfs = 0;
Uint32 palette[256];
/* The Win32 ICO file header (14 bytes) */
Uint16 bfReserved;
Uint16 bfType;
Uint16 bfCount;
/* The Win32 BITMAPINFOHEADER struct (40 bytes) */
Uint32 biSize;
Sint32 biWidth;
Sint32 biHeight;
Uint16 biPlanes;
Uint16 biBitCount;
Uint32 biCompression;
Uint32 biSizeImage;
Sint32 biXPelsPerMeter;
Sint32 biYPelsPerMeter;
Uint32 biClrUsed;
Uint32 biClrImportant;
/* Make sure we are passed a valid data source */
surface = NULL;
was_error = SDL_FALSE;
if (src == NULL) {
was_error = SDL_TRUE;
goto done;
}
/* Read in the ICO file header */
fp_offset = SDL_RWtell(src);
SDL_ClearError();
bfReserved = SDL_ReadLE16(src);
bfType = SDL_ReadLE16(src);
bfCount = SDL_ReadLE16(src);
if ((bfReserved != 0) || (bfType != type) || (bfCount == 0)) {
IMG_SetError("File is not a Windows %s file", type == 1 ? "ICO" : "CUR");
was_error = SDL_TRUE;
goto done;
}
/* Read the Win32 Icon Directory */
for (i = 0; i < bfCount; i++) {
/* Icon Directory Entries */
int bWidth = SDL_Read8(src); /* Uint8, but 0 = 256 ! */
int bHeight = SDL_Read8(src); /* Uint8, but 0 = 256 ! */
int bColorCount = SDL_Read8(src); /* Uint8, but 0 = 256 ! */
Uint8 bReserved = SDL_Read8(src);
Uint16 wPlanes = SDL_ReadLE16(src);
Uint16 wBitCount = SDL_ReadLE16(src);
Uint32 dwBytesInRes = SDL_ReadLE32(src);
Uint32 dwImageOffset = SDL_ReadLE32(src);
if (!bWidth)
bWidth = 256;
if (!bHeight)
bHeight = 256;
if (!bColorCount)
bColorCount = 256;
//printf("%dx%d@%d - %08x\n", bWidth, bHeight, bColorCount, dwImageOffset);
if (bColorCount > maxCol) {
maxCol = bColorCount;
icoOfs = dwImageOffset;
//printf("marked\n");
}
}
/* Advance to the DIB Data */
if (SDL_RWseek(src, icoOfs, RW_SEEK_SET) < 0) {
SDL_Error(SDL_EFSEEK);
was_error = SDL_TRUE;
goto done;
}
/* Read the Win32 BITMAPINFOHEADER */
biSize = SDL_ReadLE32(src);
if (biSize == 40) {
biWidth = SDL_ReadLE32(src);
biHeight = SDL_ReadLE32(src);
biPlanes = SDL_ReadLE16(src);
biBitCount = SDL_ReadLE16(src);
biCompression = SDL_ReadLE32(src);
biSizeImage = SDL_ReadLE32(src);
biXPelsPerMeter = SDL_ReadLE32(src);
biYPelsPerMeter = SDL_ReadLE32(src);
biClrUsed = SDL_ReadLE32(src);
biClrImportant = SDL_ReadLE32(src);
} else {
IMG_SetError("Unsupported ICO bitmap format");
was_error = SDL_TRUE;
goto done;
}
/* Check for read error */
if (SDL_strcmp(SDL_GetError(), "") != 0) {
was_error = SDL_TRUE;
goto done;
}
/* We don't support any BMP compression right now */
switch (biCompression) {
case BI_RGB:
/* Default values for the BMP format */
switch (biBitCount) {
case 1:
case 4:
ExpandBMP = biBitCount;
biBitCount = 8;
break;
case 8:
ExpandBMP = 8;
break;
case 32:
Rmask = 0x00FF0000;
Gmask = 0x0000FF00;
Bmask = 0x000000FF;
ExpandBMP = 0;
break;
default:
IMG_SetError("ICO file with unsupported bit count");
was_error = SDL_TRUE;
goto done;
}
break;
default:
IMG_SetError("Compressed ICO files not supported");
was_error = SDL_TRUE;
goto done;
}
/* Create a RGBA surface */
biHeight = biHeight >> 1;
//printf("%d x %d\n", biWidth, biHeight);
surface =
SDL_CreateRGBSurface(0, biWidth, biHeight, 32, 0x00FF0000,
0x0000FF00, 0x000000FF, 0xFF000000);
if (surface == NULL) {
was_error = SDL_TRUE;
goto done;
}
/* Load the palette, if any */
//printf("bc %d bused %d\n", biBitCount, biClrUsed);
if (biBitCount <= 8) {
if (biClrUsed == 0) {
biClrUsed = 1 << biBitCount;
}
for (i = 0; i < (int) biClrUsed; ++i) {
SDL_RWread(src, &palette[i], 4, 1);
}
}
/* Read the surface pixels. Note that the bmp image is upside down */
bits = (Uint8 *) surface->pixels + (surface->h * surface->pitch);
switch (ExpandBMP) {
case 1:
bmpPitch = (biWidth + 7) >> 3;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
break;
case 4:
bmpPitch = (biWidth + 1) >> 1;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
break;
case 8:
bmpPitch = biWidth;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
break;
default:
bmpPitch = biWidth * 4;
pad = 0;
break;
}
while (bits > (Uint8 *) surface->pixels) {
bits -= surface->pitch;
switch (ExpandBMP) {
case 1:
case 4:
case 8:
{
Uint8 pixel = 0;
int shift = (8 - ExpandBMP);
for (i = 0; i < surface->w; ++i) {
if (i % (8 / ExpandBMP) == 0) {
if (!SDL_RWread(src, &pixel, 1, 1)) {
IMG_SetError("Error reading from ICO");
was_error = SDL_TRUE;
goto done;
}
}
*((Uint32 *) bits + i) = (palette[pixel >> shift]);
pixel <<= ExpandBMP;
}
}
break;
default:
if (SDL_RWread(src, bits, 1, surface->pitch)
!= surface->pitch) {
SDL_Error(SDL_EFREAD);
was_error = SDL_TRUE;
goto done;
}
break;
}
/* Skip padding bytes, ugh */
if (pad) {
Uint8 padbyte;
for (i = 0; i < pad; ++i) {
SDL_RWread(src, &padbyte, 1, 1);
}
}
}
/* Read the mask pixels. Note that the bmp image is upside down */
bits = (Uint8 *) surface->pixels + (surface->h * surface->pitch);
ExpandBMP = 1;
bmpPitch = (biWidth + 7) >> 3;
pad = (((bmpPitch) % 4) ? (4 - ((bmpPitch) % 4)) : 0);
while (bits > (Uint8 *) surface->pixels) {
Uint8 pixel = 0;
int shift = (8 - ExpandBMP);
bits -= surface->pitch;
for (i = 0; i < surface->w; ++i) {
if (i % (8 / ExpandBMP) == 0) {
if (!SDL_RWread(src, &pixel, 1, 1)) {
IMG_SetError("Error reading from ICO");
was_error = SDL_TRUE;
goto done;
}
}
*((Uint32 *) bits + i) |= ((pixel >> shift) ? 0 : 0xFF000000);
pixel <<= ExpandBMP;
}
/* Skip padding bytes, ugh */
if (pad) {
Uint8 padbyte;
for (i = 0; i < pad; ++i) {
SDL_RWread(src, &padbyte, 1, 1);
}
}
}
done:
if (was_error) {
if (src) {
SDL_RWseek(src, fp_offset, RW_SEEK_SET);
}
if (surface) {
SDL_FreeSurface(surface);
}
surface = NULL;
}
if (freesrc && src) {
SDL_RWclose(src);
}
return (surface);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadBMP_RW(SDL_RWops *src)
{
return(LoadBMP_RW(src, 0));
}
/* Load a ICO type image from an SDL datasource */
SDL_Surface *IMG_LoadICO_RW(SDL_RWops *src)
{
return(LoadICOCUR_RW(src, 1, 0));
}
/* Load a CUR type image from an SDL datasource */
SDL_Surface *IMG_LoadCUR_RW(SDL_RWops *src)
{
return(LoadICOCUR_RW(src, 2, 0));
}
#else
/* See if an image is contained in a data source */
int IMG_isBMP(SDL_RWops *src)
{
return(0);
}
int IMG_isICO(SDL_RWops *src)
{
return(0);
}
int IMG_isCUR(SDL_RWops *src)
{
return(0);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadBMP_RW(SDL_RWops *src)
{
return(NULL);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadCUR_RW(SDL_RWops *src)
{
return(NULL);
}
/* Load a BMP type image from an SDL datasource */
SDL_Surface *IMG_LoadICO_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_BMP */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
project/jni/sdl2_image/IMG_gif.c
+636
View File
@@ -0,0 +1,636 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a GIF image file loading framework */
#include <stdio.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_GIF
/* See if an image is contained in a data source */
int IMG_isGIF(SDL_RWops *src)
{
Sint64 start;
int is_GIF;
char magic[6];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_GIF = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if ( (SDL_strncmp(magic, "GIF", 3) == 0) &&
((SDL_memcmp(magic + 3, "87a", 3) == 0) ||
(SDL_memcmp(magic + 3, "89a", 3) == 0)) ) {
is_GIF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_GIF);
}
/* Code from here to end of file has been adapted from XPaint: */
/* +-------------------------------------------------------------------+ */
/* | Copyright 1990, 1991, 1993 David Koblas. | */
/* | Copyright 1996 Torsten Martinsen. | */
/* | 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. | */
/* +-------------------------------------------------------------------+ */
/* Adapted for use in SDL by Sam Lantinga -- 7/20/98 */
#define USED_BY_SDL
#include <stdio.h>
#include <string.h>
#ifdef USED_BY_SDL
/* Changes to work with SDL:
Include SDL header file
Use SDL_Surface rather than xpaint Image structure
Define SDL versions of RWSetMsg(), ImageNewCmap() and ImageSetCmap()
*/
#include "SDL.h"
#define Image SDL_Surface
#define RWSetMsg IMG_SetError
#define ImageNewCmap(w, h, s) SDL_CreateRGBSurface(SDL_SWSURFACE,w,h,8,0,0,0,0)
#define ImageSetCmap(s, i, R, G, B) do { \
s->format->palette->colors[i].r = R; \
s->format->palette->colors[i].g = G; \
s->format->palette->colors[i].b = B; \
} while (0)
/* * * * * */
#else
/* Original XPaint sources */
#include "image.h"
#include "rwTable.h"
#define SDL_RWops FILE
#define SDL_RWclose fclose
#endif /* USED_BY_SDL */
#define MAXCOLORMAPSIZE 256
#define TRUE 1
#define FALSE 0
#define CM_RED 0
#define CM_GREEN 1
#define CM_BLUE 2
#define MAX_LWZ_BITS 12
#define INTERLACE 0x40
#define LOCALCOLORMAP 0x80
#define BitSet(byte, bit) (((byte) & (bit)) == (bit))
#define ReadOK(file,buffer,len) SDL_RWread(file, buffer, len, 1)
#define LM_to_uint(a,b) (((b)<<8)|(a))
static struct {
unsigned int Width;
unsigned int Height;
unsigned char ColorMap[3][MAXCOLORMAPSIZE];
unsigned int BitPixel;
unsigned int ColorResolution;
unsigned int Background;
unsigned int AspectRatio;
int GrayScale;
} GifScreen;
static struct {
int transparent;
int delayTime;
int inputFlag;
int disposal;
} Gif89;
static int ReadColorMap(SDL_RWops * src, int number,
unsigned char buffer[3][MAXCOLORMAPSIZE], int *flag);
static int DoExtension(SDL_RWops * src, int label);
static int GetDataBlock(SDL_RWops * src, unsigned char *buf);
static int GetCode(SDL_RWops * src, int code_size, int flag);
static int LWZReadByte(SDL_RWops * src, int flag, int input_code_size);
static Image *ReadImage(SDL_RWops * src, int len, int height, int,
unsigned char cmap[3][MAXCOLORMAPSIZE],
int gray, int interlace, int ignore);
Image *
IMG_LoadGIF_RW(SDL_RWops *src)
{
Sint64 start;
unsigned char buf[16];
unsigned char c;
unsigned char localColorMap[3][MAXCOLORMAPSIZE];
int grayScale;
int useGlobalColormap;
int bitPixel;
int imageCount = 0;
char version[4];
int imageNumber = 1;
Image *image = NULL;
if ( src == NULL ) {
return NULL;
}
start = SDL_RWtell(src);
if (!ReadOK(src, buf, 6)) {
RWSetMsg("error reading magic number");
goto done;
}
if (SDL_strncmp((char *) buf, "GIF", 3) != 0) {
RWSetMsg("not a GIF file");
goto done;
}
SDL_memcpy(version, (char *) buf + 3, 3);
version[3] = '\0';
if ((SDL_strcmp(version, "87a") != 0) && (SDL_strcmp(version, "89a") != 0)) {
RWSetMsg("bad version number, not '87a' or '89a'");
goto done;
}
Gif89.transparent = -1;
Gif89.delayTime = -1;
Gif89.inputFlag = -1;
Gif89.disposal = 0;
if (!ReadOK(src, buf, 7)) {
RWSetMsg("failed to read screen descriptor");
goto done;
}
GifScreen.Width = LM_to_uint(buf[0], buf[1]);
GifScreen.Height = LM_to_uint(buf[2], buf[3]);
GifScreen.BitPixel = 2 << (buf[4] & 0x07);
GifScreen.ColorResolution = (((buf[4] & 0x70) >> 3) + 1);
GifScreen.Background = buf[5];
GifScreen.AspectRatio = buf[6];
if (BitSet(buf[4], LOCALCOLORMAP)) { /* Global Colormap */
if (ReadColorMap(src, GifScreen.BitPixel, GifScreen.ColorMap,
&GifScreen.GrayScale)) {
RWSetMsg("error reading global colormap");
goto done;
}
}
do {
if (!ReadOK(src, &c, 1)) {
RWSetMsg("EOF / read error on image data");
goto done;
}
if (c == ';') { /* GIF terminator */
if (imageCount < imageNumber) {
RWSetMsg("only %d image%s found in file",
imageCount, imageCount > 1 ? "s" : "");
goto done;
}
}
if (c == '!') { /* Extension */
if (!ReadOK(src, &c, 1)) {
RWSetMsg("EOF / read error on extention function code");
goto done;
}
DoExtension(src, c);
continue;
}
if (c != ',') { /* Not a valid start character */
continue;
}
++imageCount;
if (!ReadOK(src, buf, 9)) {
RWSetMsg("couldn't read left/top/width/height");
goto done;
}
useGlobalColormap = !BitSet(buf[8], LOCALCOLORMAP);
bitPixel = 1 << ((buf[8] & 0x07) + 1);
if (!useGlobalColormap) {
if (ReadColorMap(src, bitPixel, localColorMap, &grayScale)) {
RWSetMsg("error reading local colormap");
goto done;
}
image = ReadImage(src, LM_to_uint(buf[4], buf[5]),
LM_to_uint(buf[6], buf[7]),
bitPixel, localColorMap, grayScale,
BitSet(buf[8], INTERLACE),
imageCount != imageNumber);
} else {
image = ReadImage(src, LM_to_uint(buf[4], buf[5]),
LM_to_uint(buf[6], buf[7]),
GifScreen.BitPixel, GifScreen.ColorMap,
GifScreen.GrayScale, BitSet(buf[8], INTERLACE),
imageCount != imageNumber);
}
} while (image == NULL);
#ifdef USED_BY_SDL
if ( Gif89.transparent >= 0 ) {
SDL_SetColorKey(image, SDL_TRUE, Gif89.transparent);
}
#endif
done:
if ( image == NULL ) {
SDL_RWseek(src, start, RW_SEEK_SET);
}
return image;
}
static int
ReadColorMap(SDL_RWops *src, int number,
unsigned char buffer[3][MAXCOLORMAPSIZE], int *gray)
{
int i;
unsigned char rgb[3];
int flag;
flag = TRUE;
for (i = 0; i < number; ++i) {
if (!ReadOK(src, rgb, sizeof(rgb))) {
RWSetMsg("bad colormap");
return 1;
}
buffer[CM_RED][i] = rgb[0];
buffer[CM_GREEN][i] = rgb[1];
buffer[CM_BLUE][i] = rgb[2];
flag &= (rgb[0] == rgb[1] && rgb[1] == rgb[2]);
}
#if 0
if (flag)
*gray = (number == 2) ? PBM_TYPE : PGM_TYPE;
else
*gray = PPM_TYPE;
#else
*gray = 0;
#endif
return FALSE;
}
static int
DoExtension(SDL_RWops *src, int label)
{
static unsigned char buf[256];
char *str;
switch (label) {
case 0x01: /* Plain Text Extension */
str = "Plain Text Extension";
break;
case 0xff: /* Application Extension */
str = "Application Extension";
break;
case 0xfe: /* Comment Extension */
str = "Comment Extension";
while (GetDataBlock(src, (unsigned char *) buf) != 0)
;
return FALSE;
case 0xf9: /* Graphic Control Extension */
str = "Graphic Control Extension";
(void) GetDataBlock(src, (unsigned char *) buf);
Gif89.disposal = (buf[0] >> 2) & 0x7;
Gif89.inputFlag = (buf[0] >> 1) & 0x1;
Gif89.delayTime = LM_to_uint(buf[1], buf[2]);
if ((buf[0] & 0x1) != 0)
Gif89.transparent = buf[3];
while (GetDataBlock(src, (unsigned char *) buf) != 0)
;
return FALSE;
default:
str = (char *)buf;
SDL_snprintf(str, 256, "UNKNOWN (0x%02x)", label);
break;
}
while (GetDataBlock(src, (unsigned char *) buf) != 0)
;
return FALSE;
}
static int ZeroDataBlock = FALSE;
static int
GetDataBlock(SDL_RWops *src, unsigned char *buf)
{
unsigned char count;
if (!ReadOK(src, &count, 1)) {
/* pm_message("error in getting DataBlock size" ); */
return -1;
}
ZeroDataBlock = count == 0;
if ((count != 0) && (!ReadOK(src, buf, count))) {
/* pm_message("error in reading DataBlock" ); */
return -1;
}
return count;
}
static int
GetCode(SDL_RWops *src, int code_size, int flag)
{
static unsigned char buf[280];
static int curbit, lastbit, done, last_byte;
int i, j, ret;
unsigned char count;
if (flag) {
curbit = 0;
lastbit = 0;
done = FALSE;
return 0;
}
if ((curbit + code_size) >= lastbit) {
if (done) {
if (curbit >= lastbit)
RWSetMsg("ran off the end of my bits");
return -1;
}
buf[0] = buf[last_byte - 2];
buf[1] = buf[last_byte - 1];
if ((count = GetDataBlock(src, &buf[2])) == 0)
done = TRUE;
last_byte = 2 + count;
curbit = (curbit - lastbit) + 16;
lastbit = (2 + count) * 8;
}
ret = 0;
for (i = curbit, j = 0; j < code_size; ++i, ++j)
ret |= ((buf[i / 8] & (1 << (i % 8))) != 0) << j;
curbit += code_size;
return ret;
}
static int
LWZReadByte(SDL_RWops *src, int flag, int input_code_size)
{
static int fresh = FALSE;
int code, incode;
static int code_size, set_code_size;
static int max_code, max_code_size;
static int firstcode, oldcode;
static int clear_code, end_code;
static int table[2][(1 << MAX_LWZ_BITS)];
static int stack[(1 << (MAX_LWZ_BITS)) * 2], *sp;
register int i;
/* Fixed buffer overflow found by Michael Skladnikiewicz */
if (input_code_size > MAX_LWZ_BITS)
return -1;
if (flag) {
set_code_size = input_code_size;
code_size = set_code_size + 1;
clear_code = 1 << set_code_size;
end_code = clear_code + 1;
max_code_size = 2 * clear_code;
max_code = clear_code + 2;
GetCode(src, 0, TRUE);
fresh = TRUE;
for (i = 0; i < clear_code; ++i) {
table[0][i] = 0;
table[1][i] = i;
}
table[1][0] = 0;
for (; i < (1 << MAX_LWZ_BITS); ++i)
table[0][i] = 0;
sp = stack;
return 0;
} else if (fresh) {
fresh = FALSE;
do {
firstcode = oldcode = GetCode(src, code_size, FALSE);
} while (firstcode == clear_code);
return firstcode;
}
if (sp > stack)
return *--sp;
while ((code = GetCode(src, code_size, FALSE)) >= 0) {
if (code == clear_code) {
for (i = 0; i < clear_code; ++i) {
table[0][i] = 0;
table[1][i] = i;
}
for (; i < (1 << MAX_LWZ_BITS); ++i)
table[0][i] = table[1][i] = 0;
code_size = set_code_size + 1;
max_code_size = 2 * clear_code;
max_code = clear_code + 2;
sp = stack;
firstcode = oldcode = GetCode(src, code_size, FALSE);
return firstcode;
} else if (code == end_code) {
int count;
unsigned char buf[260];
if (ZeroDataBlock)
return -2;
while ((count = GetDataBlock(src, buf)) > 0)
;
if (count != 0) {
/*
* pm_message("missing EOD in data stream (common occurence)");
*/
}
return -2;
}
incode = code;
if (code >= max_code) {
*sp++ = firstcode;
code = oldcode;
}
while (code >= clear_code) {
/* Guard against buffer overruns */
if (code < 0 || code >= (1 << MAX_LWZ_BITS)) {
RWSetMsg("invalid LWZ data");
return -3;
}
*sp++ = table[1][code];
if (code == table[0][code])
RWSetMsg("circular table entry BIG ERROR");
code = table[0][code];
}
/* Guard against buffer overruns */
if (code < 0 || code >= (1 << MAX_LWZ_BITS)) {
RWSetMsg("invalid LWZ data");
return -4;
}
*sp++ = firstcode = table[1][code];
if ((code = max_code) < (1 << MAX_LWZ_BITS)) {
table[0][code] = oldcode;
table[1][code] = firstcode;
++max_code;
if ((max_code >= max_code_size) &&
(max_code_size < (1 << MAX_LWZ_BITS))) {
max_code_size *= 2;
++code_size;
}
}
oldcode = incode;
if (sp > stack)
return *--sp;
}
return code;
}
static Image *
ReadImage(SDL_RWops * src, int len, int height, int cmapSize,
unsigned char cmap[3][MAXCOLORMAPSIZE],
int gray, int interlace, int ignore)
{
Image *image;
unsigned char c;
int i, v;
int xpos = 0, ypos = 0, pass = 0;
/*
** Initialize the compression routines
*/
if (!ReadOK(src, &c, 1)) {
RWSetMsg("EOF / read error on image data");
return NULL;
}
if (LWZReadByte(src, TRUE, c) < 0) {
RWSetMsg("error reading image");
return NULL;
}
/*
** If this is an "uninteresting picture" ignore it.
*/
if (ignore) {
while (LWZReadByte(src, FALSE, c) >= 0)
;
return NULL;
}
image = ImageNewCmap(len, height, cmapSize);
for (i = 0; i < cmapSize; i++)
ImageSetCmap(image, i, cmap[CM_RED][i],
cmap[CM_GREEN][i], cmap[CM_BLUE][i]);
while ((v = LWZReadByte(src, FALSE, c)) >= 0) {
#ifdef USED_BY_SDL
((Uint8 *)image->pixels)[xpos + ypos * image->pitch] = v;
#else
image->data[xpos + ypos * len] = v;
#endif
++xpos;
if (xpos == len) {
xpos = 0;
if (interlace) {
switch (pass) {
case 0:
case 1:
ypos += 8;
break;
case 2:
ypos += 4;
break;
case 3:
ypos += 2;
break;
}
if (ypos >= height) {
++pass;
switch (pass) {
case 1:
ypos = 4;
break;
case 2:
ypos = 2;
break;
case 3:
ypos = 1;
break;
default:
goto fini;
}
}
} else {
++ypos;
}
}
if (ypos >= height)
break;
}
fini:
return image;
}
#else
/* See if an image is contained in a data source */
int IMG_isGIF(SDL_RWops *src)
{
return(0);
}
/* Load a GIF type image from an SDL datasource */
SDL_Surface *IMG_LoadGIF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_GIF */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
project/jni/sdl2_image/IMG_jpg.c
+495
View File
@@ -0,0 +1,495 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a JPEG image file loading framework */
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#include "SDL_image.h"
#ifdef LOAD_JPG
#include <jpeglib.h>
#ifdef JPEG_TRUE /* MinGW version of jpeg-8.x renamed TRUE to JPEG_TRUE etc. */
typedef JPEG_boolean boolean;
#define TRUE JPEG_TRUE
#define FALSE JPEG_FALSE
#endif
/* Define this for fast loading and not as good image quality */
/*#define FAST_JPEG*/
/* Define this for quicker (but less perfect) JPEG identification */
#define FAST_IS_JPEG
static struct {
int loaded;
void *handle;
void (*jpeg_calc_output_dimensions) (j_decompress_ptr cinfo);
void (*jpeg_CreateDecompress) (j_decompress_ptr cinfo, int version, size_t structsize);
void (*jpeg_destroy_decompress) (j_decompress_ptr cinfo);
boolean (*jpeg_finish_decompress) (j_decompress_ptr cinfo);
int (*jpeg_read_header) (j_decompress_ptr cinfo, boolean require_image);
JDIMENSION (*jpeg_read_scanlines) (j_decompress_ptr cinfo, JSAMPARRAY scanlines, JDIMENSION max_lines);
boolean (*jpeg_resync_to_restart) (j_decompress_ptr cinfo, int desired);
boolean (*jpeg_start_decompress) (j_decompress_ptr cinfo);
struct jpeg_error_mgr * (*jpeg_std_error) (struct jpeg_error_mgr * err);
} lib;
#ifdef LOAD_JPG_DYNAMIC
int IMG_InitJPG()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_JPG_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.jpeg_calc_output_dimensions =
(void (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_calc_output_dimensions");
if ( lib.jpeg_calc_output_dimensions == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_CreateDecompress =
(void (*) (j_decompress_ptr, int, size_t))
SDL_LoadFunction(lib.handle, "jpeg_CreateDecompress");
if ( lib.jpeg_CreateDecompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_destroy_decompress =
(void (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_destroy_decompress");
if ( lib.jpeg_destroy_decompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_finish_decompress =
(boolean (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_finish_decompress");
if ( lib.jpeg_finish_decompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_read_header =
(int (*) (j_decompress_ptr, boolean))
SDL_LoadFunction(lib.handle, "jpeg_read_header");
if ( lib.jpeg_read_header == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_read_scanlines =
(JDIMENSION (*) (j_decompress_ptr, JSAMPARRAY, JDIMENSION))
SDL_LoadFunction(lib.handle, "jpeg_read_scanlines");
if ( lib.jpeg_read_scanlines == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_resync_to_restart =
(boolean (*) (j_decompress_ptr, int))
SDL_LoadFunction(lib.handle, "jpeg_resync_to_restart");
if ( lib.jpeg_resync_to_restart == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_start_decompress =
(boolean (*) (j_decompress_ptr))
SDL_LoadFunction(lib.handle, "jpeg_start_decompress");
if ( lib.jpeg_start_decompress == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.jpeg_std_error =
(struct jpeg_error_mgr * (*) (struct jpeg_error_mgr *))
SDL_LoadFunction(lib.handle, "jpeg_std_error");
if ( lib.jpeg_std_error == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
}
++lib.loaded;
return 0;
}
void IMG_QuitJPG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitJPG()
{
if ( lib.loaded == 0 ) {
lib.jpeg_calc_output_dimensions = jpeg_calc_output_dimensions;
lib.jpeg_CreateDecompress = jpeg_CreateDecompress;
lib.jpeg_destroy_decompress = jpeg_destroy_decompress;
lib.jpeg_finish_decompress = jpeg_finish_decompress;
lib.jpeg_read_header = jpeg_read_header;
lib.jpeg_read_scanlines = jpeg_read_scanlines;
lib.jpeg_resync_to_restart = jpeg_resync_to_restart;
lib.jpeg_start_decompress = jpeg_start_decompress;
lib.jpeg_std_error = jpeg_std_error;
}
++lib.loaded;
return 0;
}
void IMG_QuitJPG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_JPG_DYNAMIC */
/* See if an image is contained in a data source */
int IMG_isJPG(SDL_RWops *src)
{
Sint64 start;
int is_JPG;
int in_scan;
Uint8 magic[4];
/* This detection code is by Steaphan Greene <stea@cs.binghamton.edu> */
/* Blame me, not Sam, if this doesn't work right. */
/* And don't forget to report the problem to the the sdl list too! */
if ( !src )
return 0;
start = SDL_RWtell(src);
is_JPG = 0;
in_scan = 0;
if ( SDL_RWread(src, magic, 2, 1) ) {
if ( (magic[0] == 0xFF) && (magic[1] == 0xD8) ) {
is_JPG = 1;
while (is_JPG == 1) {
if(SDL_RWread(src, magic, 1, 2) != 2) {
is_JPG = 0;
} else if( (magic[0] != 0xFF) && (in_scan == 0) ) {
is_JPG = 0;
} else if( (magic[0] != 0xFF) || (magic[1] == 0xFF) ) {
/* Extra padding in JPEG (legal) */
/* or this is data and we are scanning */
SDL_RWseek(src, -1, RW_SEEK_CUR);
} else if(magic[1] == 0xD9) {
/* Got to end of good JPEG */
break;
} else if( (in_scan == 1) && (magic[1] == 0x00) ) {
/* This is an encoded 0xFF within the data */
} else if( (magic[1] >= 0xD0) && (magic[1] < 0xD9) ) {
/* These have nothing else */
} else if(SDL_RWread(src, magic+2, 1, 2) != 2) {
is_JPG = 0;
} else {
/* Yes, it's big-endian */
Sint64 innerStart;
Uint32 size;
Sint64 end;
innerStart = SDL_RWtell(src);
size = (magic[2] << 8) + magic[3];
end = SDL_RWseek(src, size-2, RW_SEEK_CUR);
if ( end != innerStart + size - 2 ) is_JPG = 0;
if ( magic[1] == 0xDA ) {
/* Now comes the actual JPEG meat */
#ifdef FAST_IS_JPEG
/* Ok, I'm convinced. It is a JPEG. */
break;
#else
/* I'm not convinced. Prove it! */
in_scan = 1;
#endif
}
}
}
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_JPG);
}
#define INPUT_BUFFER_SIZE 4096
typedef struct {
struct jpeg_source_mgr pub;
SDL_RWops *ctx;
Uint8 buffer[INPUT_BUFFER_SIZE];
} my_source_mgr;
/*
* Initialize source --- called by jpeg_read_header
* before any data is actually read.
*/
static void init_source (j_decompress_ptr cinfo)
{
/* We don't actually need to do anything */
return;
}
/*
* Fill the input buffer --- called whenever buffer is emptied.
*/
static boolean fill_input_buffer (j_decompress_ptr cinfo)
{
my_source_mgr * src = (my_source_mgr *) cinfo->src;
int nbytes;
nbytes = SDL_RWread(src->ctx, src->buffer, 1, INPUT_BUFFER_SIZE);
if (nbytes <= 0) {
/* Insert a fake EOI marker */
src->buffer[0] = (Uint8) 0xFF;
src->buffer[1] = (Uint8) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
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.
*/
static void skip_input_data (j_decompress_ptr cinfo, long num_bytes)
{
my_source_mgr * src = (my_source_mgr *) 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) src->pub.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;
}
}
/*
* Terminate source --- called by jpeg_finish_decompress
* after all data has been read.
*/
static void term_source (j_decompress_ptr cinfo)
{
/* We don't actually need to do anything */
return;
}
/*
* Prepare for input from a stdio stream.
* The caller must have already opened the stream, and is responsible
* for closing it after finishing decompression.
*/
static void jpeg_SDL_RW_src (j_decompress_ptr cinfo, SDL_RWops *ctx)
{
my_source_mgr *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_source_mgr *) cinfo->src;
}
src = (my_source_mgr *) 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 = lib.jpeg_resync_to_restart; /* use default method */
src->pub.term_source = term_source;
src->ctx = ctx;
src->pub.bytes_in_buffer = 0; /* forces fill_input_buffer on first read */
src->pub.next_input_byte = NULL; /* until buffer loaded */
}
struct my_error_mgr {
struct jpeg_error_mgr errmgr;
jmp_buf escape;
};
static void my_error_exit(j_common_ptr cinfo)
{
struct my_error_mgr *err = (struct my_error_mgr *)cinfo->err;
longjmp(err->escape, 1);
}
static void output_no_message(j_common_ptr cinfo)
{
/* do nothing */
}
/* Load a JPEG type image from an SDL datasource */
SDL_Surface *IMG_LoadJPG_RW(SDL_RWops *src)
{
Sint64 start;
struct jpeg_decompress_struct cinfo;
JSAMPROW rowptr[1];
SDL_Surface *volatile surface = NULL;
struct my_error_mgr jerr;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_JPG) ) {
return NULL;
}
/* Create a decompression structure and load the JPEG header */
cinfo.err = lib.jpeg_std_error(&jerr.errmgr);
jerr.errmgr.error_exit = my_error_exit;
jerr.errmgr.output_message = output_no_message;
if(setjmp(jerr.escape)) {
/* If we get here, libjpeg found an error */
lib.jpeg_destroy_decompress(&cinfo);
if ( surface != NULL ) {
SDL_FreeSurface(surface);
}
SDL_RWseek(src, start, RW_SEEK_SET);
IMG_SetError("JPEG loading error");
return NULL;
}
lib.jpeg_create_decompress(&cinfo);
jpeg_SDL_RW_src(&cinfo, src);
lib.jpeg_read_header(&cinfo, TRUE);
if(cinfo.num_components == 4) {
/* Set 32-bit Raw output */
cinfo.out_color_space = JCS_CMYK;
cinfo.quantize_colors = FALSE;
lib.jpeg_calc_output_dimensions(&cinfo);
/* Allocate an output surface to hold the image */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
cinfo.output_width, cinfo.output_height, 32,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x00FF0000, 0x0000FF00, 0x000000FF, 0xFF000000);
#else
0x0000FF00, 0x00FF0000, 0xFF000000, 0x000000FF);
#endif
} else {
/* Set 24-bit RGB output */
cinfo.out_color_space = JCS_RGB;
cinfo.quantize_colors = FALSE;
#ifdef FAST_JPEG
cinfo.scale_num = 1;
cinfo.scale_denom = 1;
cinfo.dct_method = JDCT_FASTEST;
cinfo.do_fancy_upsampling = FALSE;
#endif
lib.jpeg_calc_output_dimensions(&cinfo);
/* Allocate an output surface to hold the image */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
cinfo.output_width, cinfo.output_height, 24,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x0000FF, 0x00FF00, 0xFF0000,
#else
0xFF0000, 0x00FF00, 0x0000FF,
#endif
0);
}
if ( surface == NULL ) {
lib.jpeg_destroy_decompress(&cinfo);
SDL_RWseek(src, start, RW_SEEK_SET);
IMG_SetError("Out of memory");
return NULL;
}
/* Decompress the image */
lib.jpeg_start_decompress(&cinfo);
while ( cinfo.output_scanline < cinfo.output_height ) {
rowptr[0] = (JSAMPROW)(Uint8 *)surface->pixels +
cinfo.output_scanline * surface->pitch;
lib.jpeg_read_scanlines(&cinfo, rowptr, (JDIMENSION) 1);
}
lib.jpeg_finish_decompress(&cinfo);
lib.jpeg_destroy_decompress(&cinfo);
return(surface);
}
#else
int IMG_InitJPG()
{
IMG_SetError("JPEG images are not supported");
return(-1);
}
void IMG_QuitJPG()
{
}
/* See if an image is contained in a data source */
int IMG_isJPG(SDL_RWops *src)
{
return(0);
}
/* Load a JPEG type image from an SDL datasource */
SDL_Surface *IMG_LoadJPG_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_JPG */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
project/jni/sdl2_image/IMG_lbm.c
+499
View File
@@ -0,0 +1,499 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a ILBM image file loading framework
Load IFF pictures, PBM & ILBM packing methods, with or without stencil
Written by Daniel Morais ( Daniel AT Morais DOT com ) in September 2001.
24 bits ILBM files support added by Marc Le Douarain (http://www.multimania.com/mavati)
in December 2002.
EHB and HAM (specific Amiga graphic chip modes) support added by Marc Le Douarain
(http://www.multimania.com/mavati) in December 2003.
Stencil and colorkey fixes by David Raulo (david.raulo AT free DOT fr) in February 2004.
Buffer overflow fix in RLE decompression by David Raulo in January 2008.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_LBM
#define MAXCOLORS 256
/* Structure for an IFF picture ( BMHD = Bitmap Header ) */
typedef struct
{
Uint16 w, h; /* width & height of the bitmap in pixels */
Sint16 x, y; /* screen coordinates of the bitmap */
Uint8 planes; /* number of planes of the bitmap */
Uint8 mask; /* mask type ( 0 => no mask ) */
Uint8 tcomp; /* compression type */
Uint8 pad1; /* dummy value, for padding */
Uint16 tcolor; /* transparent color */
Uint8 xAspect, /* pixel aspect ratio */
yAspect;
Sint16 Lpage; /* width of the screen in pixels */
Sint16 Hpage; /* height of the screen in pixels */
} BMHD;
int IMG_isLBM( SDL_RWops *src )
{
Sint64 start;
int is_LBM;
Uint8 magic[4+4+4];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_LBM = 0;
if ( SDL_RWread( src, magic, sizeof(magic), 1 ) )
{
if ( !SDL_memcmp( magic, "FORM", 4 ) &&
( !SDL_memcmp( magic + 8, "PBM ", 4 ) ||
!SDL_memcmp( magic + 8, "ILBM", 4 ) ) )
{
is_LBM = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return( is_LBM );
}
SDL_Surface *IMG_LoadLBM_RW( SDL_RWops *src )
{
Sint64 start;
SDL_Surface *Image;
Uint8 id[4], pbm, colormap[MAXCOLORS*3], *MiniBuf, *ptr, count, color, msk;
Uint32 size, bytesloaded, nbcolors;
Uint32 i, j, bytesperline, nbplanes, stencil, plane, h;
Uint32 remainingbytes;
Uint32 width;
BMHD bmhd;
char *error;
Uint8 flagHAM,flagEHB;
Image = NULL;
error = NULL;
MiniBuf = NULL;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !SDL_RWread( src, id, 4, 1 ) )
{
error="error reading IFF chunk";
goto done;
}
/* Should be the size of the file minus 4+4 ( 'FORM'+size ) */
if ( !SDL_RWread( src, &size, 4, 1 ) )
{
error="error reading IFF chunk size";
goto done;
}
/* As size is not used here, no need to swap it */
if ( SDL_memcmp( id, "FORM", 4 ) != 0 )
{
error="not a IFF file";
goto done;
}
if ( !SDL_RWread( src, id, 4, 1 ) )
{
error="error reading IFF chunk";
goto done;
}
pbm = 0;
/* File format : PBM=Packed Bitmap, ILBM=Interleaved Bitmap */
if ( !SDL_memcmp( id, "PBM ", 4 ) ) pbm = 1;
else if ( SDL_memcmp( id, "ILBM", 4 ) )
{
error="not a IFF picture";
goto done;
}
nbcolors = 0;
SDL_memset( &bmhd, 0, sizeof( BMHD ) );
flagHAM = 0;
flagEHB = 0;
while ( SDL_memcmp( id, "BODY", 4 ) != 0 )
{
if ( !SDL_RWread( src, id, 4, 1 ) )
{
error="error reading IFF chunk";
goto done;
}
if ( !SDL_RWread( src, &size, 4, 1 ) )
{
error="error reading IFF chunk size";
goto done;
}
bytesloaded = 0;
size = SDL_SwapBE32( size );
if ( !SDL_memcmp( id, "BMHD", 4 ) ) /* Bitmap header */
{
if ( !SDL_RWread( src, &bmhd, sizeof( BMHD ), 1 ) )
{
error="error reading BMHD chunk";
goto done;
}
bytesloaded = sizeof( BMHD );
bmhd.w = SDL_SwapBE16( bmhd.w );
bmhd.h = SDL_SwapBE16( bmhd.h );
bmhd.x = SDL_SwapBE16( bmhd.x );
bmhd.y = SDL_SwapBE16( bmhd.y );
bmhd.tcolor = SDL_SwapBE16( bmhd.tcolor );
bmhd.Lpage = SDL_SwapBE16( bmhd.Lpage );
bmhd.Hpage = SDL_SwapBE16( bmhd.Hpage );
}
if ( !SDL_memcmp( id, "CMAP", 4 ) ) /* palette ( Color Map ) */
{
if ( !SDL_RWread( src, &colormap, size, 1 ) )
{
error="error reading CMAP chunk";
goto done;
}
bytesloaded = size;
nbcolors = size / 3;
}
if ( !SDL_memcmp( id, "CAMG", 4 ) ) /* Amiga ViewMode */
{
Uint32 viewmodes;
if ( !SDL_RWread( src, &viewmodes, sizeof(viewmodes), 1 ) )
{
error="error reading CAMG chunk";
goto done;
}
bytesloaded = size;
viewmodes = SDL_SwapBE32( viewmodes );
if ( viewmodes & 0x0800 )
flagHAM = 1;
if ( viewmodes & 0x0080 )
flagEHB = 1;
}
if ( SDL_memcmp( id, "BODY", 4 ) )
{
if ( size & 1 ) ++size; /* padding ! */
size -= bytesloaded;
/* skip the remaining bytes of this chunk */
if ( size ) SDL_RWseek( src, size, RW_SEEK_CUR );
}
}
/* compute some usefull values, based on the bitmap header */
width = ( bmhd.w + 15 ) & 0xFFFFFFF0; /* Width in pixels modulo 16 */
bytesperline = ( ( bmhd.w + 15 ) / 16 ) * 2;
nbplanes = bmhd.planes;
if ( pbm ) /* File format : 'Packed Bitmap' */
{
bytesperline *= 8;
nbplanes = 1;
}
stencil = (bmhd.mask & 1); /* There is a mask ( 'stencil' ) */
/* Allocate memory for a temporary buffer ( used for
decompression/deinterleaving ) */
MiniBuf = (Uint8 *)SDL_malloc( bytesperline * (nbplanes + stencil) );
if ( MiniBuf == NULL )
{
error="no enough memory for temporary buffer";
goto done;
}
if ( ( Image = SDL_CreateRGBSurface( SDL_SWSURFACE, width, bmhd.h, (bmhd.planes==24 || flagHAM==1)?24:8, 0, 0, 0, 0 ) ) == NULL )
goto done;
if ( bmhd.mask & 2 ) /* There is a transparent color */
SDL_SetColorKey( Image, SDL_TRUE, bmhd.tcolor );
/* Update palette informations */
/* There is no palette in 24 bits ILBM file */
if ( nbcolors>0 && flagHAM==0 )
{
/* FIXME: Should this include the stencil? See comment below */
int nbrcolorsfinal = 1 << (nbplanes + stencil);
ptr = &colormap[0];
for ( i=0; i<nbcolors; i++ )
{
Image->format->palette->colors[i].r = *ptr++;
Image->format->palette->colors[i].g = *ptr++;
Image->format->palette->colors[i].b = *ptr++;
}
/* Amiga EHB mode (Extra-Half-Bright) */
/* 6 bitplanes mode with a 32 colors palette */
/* The 32 last colors are the same but divided by 2 */
/* Some Amiga pictures save 64 colors with 32 last wrong colors, */
/* they shouldn't !, and here we overwrite these 32 bad colors. */
if ( (nbcolors==32 || flagEHB ) && (1<<bmhd.planes)==64 )
{
nbcolors = 64;
ptr = &colormap[0];
for ( i=32; i<64; i++ )
{
Image->format->palette->colors[i].r = (*ptr++)/2;
Image->format->palette->colors[i].g = (*ptr++)/2;
Image->format->palette->colors[i].b = (*ptr++)/2;
}
}
/* If nbcolors < 2^nbplanes, repeat the colormap */
/* This happens when pictures have a stencil mask */
if ( nbrcolorsfinal > (1<<bmhd.planes) ) {
nbrcolorsfinal = (1<<bmhd.planes);
}
for ( i=nbcolors; i < (Uint32)nbrcolorsfinal; i++ )
{
Image->format->palette->colors[i].r = Image->format->palette->colors[i%nbcolors].r;
Image->format->palette->colors[i].g = Image->format->palette->colors[i%nbcolors].g;
Image->format->palette->colors[i].b = Image->format->palette->colors[i%nbcolors].b;
}
if ( !pbm )
Image->format->palette->ncolors = nbrcolorsfinal;
}
/* Get the bitmap */
for ( h=0; h < bmhd.h; h++ )
{
/* uncompress the datas of each planes */
for ( plane=0; plane < (nbplanes+stencil); plane++ )
{
ptr = MiniBuf + ( plane * bytesperline );
remainingbytes = bytesperline;
if ( bmhd.tcomp == 1 ) /* Datas are compressed */
{
do
{
if ( !SDL_RWread( src, &count, 1, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
if ( count & 0x80 )
{
count ^= 0xFF;
count += 2; /* now it */
if ( ( count > remainingbytes ) || !SDL_RWread( src, &color, 1, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
SDL_memset( ptr, color, count );
}
else
{
++count;
if ( ( count > remainingbytes ) || !SDL_RWread( src, ptr, count, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
}
ptr += count;
remainingbytes -= count;
} while ( remainingbytes > 0 );
}
else
{
if ( !SDL_RWread( src, ptr, bytesperline, 1 ) )
{
error="error reading BODY chunk";
goto done;
}
}
}
/* One line has been read, store it ! */
ptr = (Uint8 *)Image->pixels;
if ( nbplanes==24 || flagHAM==1 )
ptr += h * width * 3;
else
ptr += h * width;
if ( pbm ) /* File format : 'Packed Bitmap' */
{
SDL_memcpy( ptr, MiniBuf, width );
}
else /* We have to un-interlace the bits ! */
{
if ( nbplanes!=24 && flagHAM==0 )
{
size = ( width + 7 ) / 8;
for ( i=0; i < size; i++ )
{
memset( ptr, 0, 8 );
for ( plane=0; plane < (nbplanes + stencil); plane++ )
{
color = *( MiniBuf + i + ( plane * bytesperline ) );
msk = 0x80;
for ( j=0; j<8; j++ )
{
if ( ( plane + j ) <= 7 ) ptr[j] |= (Uint8)( color & msk ) >> ( 7 - plane - j );
else ptr[j] |= (Uint8)( color & msk ) << ( plane + j - 7 );
msk >>= 1;
}
}
ptr += 8;
}
}
else
{
Uint32 finalcolor = 0;
size = ( width + 7 ) / 8;
/* 24 bitplanes ILBM : R0...R7,G0...G7,B0...B7 */
/* or HAM (6 bitplanes) or HAM8 (8 bitplanes) modes */
for ( i=0; i<width; i=i+8 )
{
Uint8 maskBit = 0x80;
for ( j=0; j<8; j++ )
{
Uint32 pixelcolor = 0;
Uint32 maskColor = 1;
Uint8 dataBody;
for ( plane=0; plane < nbplanes; plane++ )
{
dataBody = MiniBuf[ plane*size+i/8 ];
if ( dataBody&maskBit )
pixelcolor = pixelcolor | maskColor;
maskColor = maskColor<<1;
}
/* HAM : 12 bits RGB image (4 bits per color component) */
/* HAM8 : 18 bits RGB image (6 bits per color component) */
if ( flagHAM )
{
switch( pixelcolor>>(nbplanes-2) )
{
case 0: /* take direct color from palette */
finalcolor = colormap[ pixelcolor*3 ] + (colormap[ pixelcolor*3+1 ]<<8) + (colormap[ pixelcolor*3+2 ]<<16);
break;
case 1: /* modify only blue component */
finalcolor = finalcolor&0x00FFFF;
finalcolor = finalcolor | (pixelcolor<<(16+(10-nbplanes)));
break;
case 2: /* modify only red component */
finalcolor = finalcolor&0xFFFF00;
finalcolor = finalcolor | pixelcolor<<(10-nbplanes);
break;
case 3: /* modify only green component */
finalcolor = finalcolor&0xFF00FF;
finalcolor = finalcolor | (pixelcolor<<(8+(10-nbplanes)));
break;
}
}
else
{
finalcolor = pixelcolor;
}
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
*ptr++ = (Uint8)(finalcolor>>16);
*ptr++ = (Uint8)(finalcolor>>8);
*ptr++ = (Uint8)(finalcolor);
#else
*ptr++ = (Uint8)(finalcolor);
*ptr++ = (Uint8)(finalcolor>>8);
*ptr++ = (Uint8)(finalcolor>>16);
#endif
maskBit = maskBit>>1;
}
}
}
}
}
done:
if ( MiniBuf ) SDL_free( MiniBuf );
if ( error )
{
SDL_RWseek(src, start, RW_SEEK_SET);
if ( Image ) {
SDL_FreeSurface( Image );
Image = NULL;
}
IMG_SetError( error );
}
return( Image );
}
#else /* LOAD_LBM */
/* See if an image is contained in a data source */
int IMG_isLBM(SDL_RWops *src)
{
return(0);
}
/* Load an IFF type image from an SDL datasource */
SDL_Surface *IMG_LoadLBM_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_LBM */
project/jni/sdl2_image/IMG_pcx.c
+276
View File
@@ -0,0 +1,276 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* PCX file reader:
* Supports:
* 1..4 bits/pixel in multiplanar format (1 bit/plane/pixel)
* 8 bits/pixel in single-planar format (8 bits/plane/pixel)
* 24 bits/pixel in 3-plane format (8 bits/plane/pixel)
*
* (The <8bpp formats are expanded to 8bpp surfaces)
*
* Doesn't support:
* single-planar packed-pixel formats other than 8bpp
* 4-plane 32bpp format with a fourth "intensity" plane
*/
#include <stdio.h>
#include <stdlib.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_PCX
struct PCXheader {
Uint8 Manufacturer;
Uint8 Version;
Uint8 Encoding;
Uint8 BitsPerPixel;
Sint16 Xmin, Ymin, Xmax, Ymax;
Sint16 HDpi, VDpi;
Uint8 Colormap[48];
Uint8 Reserved;
Uint8 NPlanes;
Sint16 BytesPerLine;
Sint16 PaletteInfo;
Sint16 HscreenSize;
Sint16 VscreenSize;
Uint8 Filler[54];
};
/* See if an image is contained in a data source */
int IMG_isPCX(SDL_RWops *src)
{
Sint64 start;
int is_PCX;
const int ZSoft_Manufacturer = 10;
const int PC_Paintbrush_Version = 5;
const int PCX_Uncompressed_Encoding = 0;
const int PCX_RunLength_Encoding = 1;
struct PCXheader pcxh;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_PCX = 0;
if ( SDL_RWread(src, &pcxh, sizeof(pcxh), 1) == 1 ) {
if ( (pcxh.Manufacturer == ZSoft_Manufacturer) &&
(pcxh.Version == PC_Paintbrush_Version) &&
(pcxh.Encoding == PCX_RunLength_Encoding ||
pcxh.Encoding == PCX_Uncompressed_Encoding) ) {
is_PCX = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_PCX);
}
/* Load a PCX type image from an SDL datasource */
SDL_Surface *IMG_LoadPCX_RW(SDL_RWops *src)
{
Sint64 start;
struct PCXheader pcxh;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
SDL_Surface *surface = NULL;
int width, height;
int y, bpl;
Uint8 *row, *buf = NULL;
char *error = NULL;
int bits, src_bits;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( ! SDL_RWread(src, &pcxh, sizeof(pcxh), 1) ) {
error = "file truncated";
goto done;
}
pcxh.Xmin = SDL_SwapLE16(pcxh.Xmin);
pcxh.Ymin = SDL_SwapLE16(pcxh.Ymin);
pcxh.Xmax = SDL_SwapLE16(pcxh.Xmax);
pcxh.Ymax = SDL_SwapLE16(pcxh.Ymax);
pcxh.BytesPerLine = SDL_SwapLE16(pcxh.BytesPerLine);
/* Create the surface of the appropriate type */
width = (pcxh.Xmax - pcxh.Xmin) + 1;
height = (pcxh.Ymax - pcxh.Ymin) + 1;
Rmask = Gmask = Bmask = Amask = 0;
src_bits = pcxh.BitsPerPixel * pcxh.NPlanes;
if((pcxh.BitsPerPixel == 1 && pcxh.NPlanes >= 1 && pcxh.NPlanes <= 4)
|| (pcxh.BitsPerPixel == 8 && pcxh.NPlanes == 1)) {
bits = 8;
} else if(pcxh.BitsPerPixel == 8 && pcxh.NPlanes == 3) {
bits = 24;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
#else
Rmask = 0xFF0000;
Gmask = 0x00FF00;
Bmask = 0x0000FF;
#endif
} else {
error = "unsupported PCX format";
goto done;
}
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
bits, Rmask, Gmask, Bmask, Amask);
if ( surface == NULL )
goto done;
bpl = pcxh.NPlanes * pcxh.BytesPerLine;
if (bpl > surface->pitch) {
error = "bytes per line is too large (corrupt?)";
}
buf = (Uint8 *)SDL_malloc(bpl);
row = (Uint8 *)surface->pixels;
for ( y=0; y<surface->h; ++y ) {
/* decode a scan line to a temporary buffer first */
int i, count = 0;
Uint8 ch;
Uint8 *dst = (src_bits == 8) ? row : buf;
if ( pcxh.Encoding == 0 ) {
if(!SDL_RWread(src, dst, bpl, 1)) {
error = "file truncated";
goto done;
}
} else {
for(i = 0; i < bpl; i++) {
if(!count) {
if(!SDL_RWread(src, &ch, 1, 1)) {
error = "file truncated";
goto done;
}
if( (ch & 0xc0) == 0xc0) {
count = ch & 0x3f;
if(!SDL_RWread(src, &ch, 1, 1)) {
error = "file truncated";
goto done;
}
} else
count = 1;
}
dst[i] = ch;
count--;
}
}
if(src_bits <= 4) {
/* expand planes to 1 byte/pixel */
Uint8 *innerSrc = buf;
int plane;
for(plane = 0; plane < pcxh.NPlanes; plane++) {
int j, k, x = 0;
for(j = 0; j < pcxh.BytesPerLine; j++) {
Uint8 byte = *innerSrc++;
for(k = 7; k >= 0; k--) {
unsigned bit = (byte >> k) & 1;
/* skip padding bits */
if (j * 8 + k >= width)
continue;
row[x++] |= bit << plane;
}
}
}
} else if(src_bits == 24) {
/* de-interlace planes */
Uint8 *innerSrc = buf;
int plane;
for(plane = 0; plane < pcxh.NPlanes; plane++) {
int x;
dst = row + plane;
for(x = 0; x < width; x++) {
*dst = *innerSrc++;
dst += pcxh.NPlanes;
}
}
}
row += surface->pitch;
}
if(bits == 8) {
SDL_Color *colors = surface->format->palette->colors;
int nc = 1 << src_bits;
int i;
surface->format->palette->ncolors = nc;
if(src_bits == 8) {
Uint8 ch;
/* look for a 256-colour palette */
do {
if ( !SDL_RWread(src, &ch, 1, 1)) {
error = "file truncated";
goto done;
}
} while ( ch != 12 );
for(i = 0; i < 256; i++) {
SDL_RWread(src, &colors[i].r, 1, 1);
SDL_RWread(src, &colors[i].g, 1, 1);
SDL_RWread(src, &colors[i].b, 1, 1);
}
} else {
for(i = 0; i < nc; i++) {
colors[i].r = pcxh.Colormap[i * 3];
colors[i].g = pcxh.Colormap[i * 3 + 1];
colors[i].b = pcxh.Colormap[i * 3 + 2];
}
}
}
done:
SDL_free(buf);
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isPCX(SDL_RWops *src)
{
return(0);
}
/* Load a PCX type image from an SDL datasource */
SDL_Surface *IMG_LoadPCX_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_PCX */
project/jni/sdl2_image/IMG_png.c
+646
View File
@@ -0,0 +1,646 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a PNG image file loading framework */
#include "SDL_image.h"
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
#ifdef LOAD_PNG
/*=============================================================================
File: SDL_png.c
Purpose: A PNG loader and saver for the SDL library
Revision:
Created by: Philippe Lavoie (2 November 1998)
lavoie@zeus.genie.uottawa.ca
Modified by:
Copyright notice:
Copyright (C) 1998 Philippe Lavoie
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Comments: The load and save routine are basically the ones you can find
in the example.c file from the libpng distribution.
Changes:
5/17/99 - Modified to use the new SDL data sources - Sam Lantinga
=============================================================================*/
#include "SDL_endian.h"
#ifdef macintosh
#define MACOS
#endif
#include <png.h>
/* Check for the older version of libpng */
#if (PNG_LIBPNG_VER_MAJOR == 1)
#if (PNG_LIBPNG_VER_MINOR < 4)
#define LIBPNG_VERSION_12
typedef png_bytep png_const_bytep;
#endif
#if (PNG_LIBPNG_VER_MINOR < 6)
typedef png_structp png_const_structrp;
typedef png_infop png_const_inforp;
#endif
#endif
static struct {
int loaded;
void *handle;
png_infop (*png_create_info_struct) (png_const_structrp png_ptr);
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);
void (*png_destroy_read_struct) (png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr);
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_voidp (*png_get_io_ptr) (png_const_structrp png_ptr);
png_byte (*png_get_channels) (png_const_structrp png_ptr, png_const_inforp info_ptr);
png_uint_32 (*png_get_PLTE) (png_const_structrp png_ptr, png_infop info_ptr, png_colorp *palette, int *num_palette);
png_uint_32 (*png_get_tRNS) (png_const_structrp png_ptr, png_infop info_ptr, png_bytep *trans, int *num_trans, png_color_16p *trans_values);
png_uint_32 (*png_get_valid) (png_const_structrp png_ptr, png_const_inforp info_ptr, png_uint_32 flag);
void (*png_read_image) (png_structp png_ptr, png_bytepp image);
void (*png_read_info) (png_structp png_ptr, png_infop info_ptr);
void (*png_read_update_info) (png_structp png_ptr, png_infop info_ptr);
void (*png_set_expand) (png_structp png_ptr);
void (*png_set_gray_to_rgb) (png_structp png_ptr);
void (*png_set_packing) (png_structp png_ptr);
void (*png_set_read_fn) (png_structp png_ptr, png_voidp io_ptr, png_rw_ptr read_data_fn);
void (*png_set_strip_16) (png_structp png_ptr);
int (*png_sig_cmp) (png_const_bytep sig, png_size_t start, png_size_t num_to_check);
#ifndef LIBPNG_VERSION_12
jmp_buf* (*png_set_longjmp_fn) (png_structp, png_longjmp_ptr, size_t);
#endif
} lib;
#ifdef LOAD_PNG_DYNAMIC
int IMG_InitPNG()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_PNG_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.png_create_info_struct =
(png_infop (*) (png_const_structrp))
SDL_LoadFunction(lib.handle, "png_create_info_struct");
if ( lib.png_create_info_struct == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_create_read_struct =
(png_structp (*) (png_const_charp, png_voidp, png_error_ptr, png_error_ptr))
SDL_LoadFunction(lib.handle, "png_create_read_struct");
if ( lib.png_create_read_struct == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_destroy_read_struct =
(void (*) (png_structpp, png_infopp, png_infopp))
SDL_LoadFunction(lib.handle, "png_destroy_read_struct");
if ( lib.png_destroy_read_struct == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_IHDR =
(png_uint_32 (*) (png_const_structrp, png_const_inforp, png_uint_32 *, png_uint_32 *, int *, int *, int *, int *, int *))
SDL_LoadFunction(lib.handle, "png_get_IHDR");
if ( lib.png_get_IHDR == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_channels =
(png_byte (*) (png_const_structrp, png_const_inforp))
SDL_LoadFunction(lib.handle, "png_get_channels");
if ( lib.png_get_channels == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_io_ptr =
(png_voidp (*) (png_const_structrp))
SDL_LoadFunction(lib.handle, "png_get_io_ptr");
if ( lib.png_get_io_ptr == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_PLTE =
(png_uint_32 (*) (png_const_structrp, png_infop, png_colorp *, int *))
SDL_LoadFunction(lib.handle, "png_get_PLTE");
if ( lib.png_get_PLTE == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_tRNS =
(png_uint_32 (*) (png_const_structrp, png_infop, png_bytep *, int *, png_color_16p *))
SDL_LoadFunction(lib.handle, "png_get_tRNS");
if ( lib.png_get_tRNS == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_get_valid =
(png_uint_32 (*) (png_const_structrp, png_const_inforp, png_uint_32))
SDL_LoadFunction(lib.handle, "png_get_valid");
if ( lib.png_get_valid == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_read_image =
(void (*) (png_structp, png_bytepp))
SDL_LoadFunction(lib.handle, "png_read_image");
if ( lib.png_read_image == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_read_info =
(void (*) (png_structp, png_infop))
SDL_LoadFunction(lib.handle, "png_read_info");
if ( lib.png_read_info == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_read_update_info =
(void (*) (png_structp, png_infop))
SDL_LoadFunction(lib.handle, "png_read_update_info");
if ( lib.png_read_update_info == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_expand =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_expand");
if ( lib.png_set_expand == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_gray_to_rgb =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_gray_to_rgb");
if ( lib.png_set_gray_to_rgb == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_packing =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_packing");
if ( lib.png_set_packing == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_read_fn =
(void (*) (png_structp, png_voidp, png_rw_ptr))
SDL_LoadFunction(lib.handle, "png_set_read_fn");
if ( lib.png_set_read_fn == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_set_strip_16 =
(void (*) (png_structp))
SDL_LoadFunction(lib.handle, "png_set_strip_16");
if ( lib.png_set_strip_16 == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.png_sig_cmp =
(int (*) (png_const_bytep, png_size_t, png_size_t))
SDL_LoadFunction(lib.handle, "png_sig_cmp");
if ( lib.png_sig_cmp == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
#ifndef LIBPNG_VERSION_12
lib.png_set_longjmp_fn =
(jmp_buf * (*) (png_structp, png_longjmp_ptr, size_t))
SDL_LoadFunction(lib.handle, "png_set_longjmp_fn");
if ( lib.png_set_longjmp_fn == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
#endif
}
++lib.loaded;
return 0;
}
void IMG_QuitPNG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitPNG()
{
if ( lib.loaded == 0 ) {
lib.png_create_info_struct = png_create_info_struct;
lib.png_create_read_struct = png_create_read_struct;
lib.png_destroy_read_struct = png_destroy_read_struct;
lib.png_get_IHDR = png_get_IHDR;
lib.png_get_channels = png_get_channels;
lib.png_get_io_ptr = png_get_io_ptr;
lib.png_get_PLTE = png_get_PLTE;
lib.png_get_tRNS = png_get_tRNS;
lib.png_get_valid = png_get_valid;
lib.png_read_image = png_read_image;
lib.png_read_info = png_read_info;
lib.png_read_update_info = png_read_update_info;
lib.png_set_expand = png_set_expand;
lib.png_set_gray_to_rgb = png_set_gray_to_rgb;
lib.png_set_packing = png_set_packing;
lib.png_set_read_fn = png_set_read_fn;
lib.png_set_strip_16 = png_set_strip_16;
lib.png_sig_cmp = png_sig_cmp;
#ifndef LIBPNG_VERSION_12
lib.png_set_longjmp_fn = png_set_longjmp_fn;
#endif
}
++lib.loaded;
return 0;
}
void IMG_QuitPNG()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_PNG_DYNAMIC */
/* See if an image is contained in a data source */
int IMG_isPNG(SDL_RWops *src)
{
Sint64 start;
int is_PNG;
Uint8 magic[4];
if ( !src ) {
return 0;
}
start = SDL_RWtell(src);
is_PNG = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( magic[0] == 0x89 &&
magic[1] == 'P' &&
magic[2] == 'N' &&
magic[3] == 'G' ) {
is_PNG = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_PNG);
}
/* Load a PNG type image from an SDL datasource */
static void png_read_data(png_structp ctx, png_bytep area, png_size_t size)
{
SDL_RWops *src;
src = (SDL_RWops *)lib.png_get_io_ptr(ctx);
SDL_RWread(src, area, size, 1);
}
SDL_Surface *IMG_LoadPNG_RW(SDL_RWops *src)
{
Sint64 start;
const char *error;
SDL_Surface *volatile surface;
png_structp png_ptr;
png_infop info_ptr;
png_uint_32 width, height;
int bit_depth, color_type, interlace_type, num_channels;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
SDL_Palette *palette;
png_bytep *volatile row_pointers;
int row, i;
int ckey = -1;
png_color_16 *transv;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_PNG) ) {
return NULL;
}
/* Initialize the data we will clean up when we're done */
error = NULL;
png_ptr = NULL; info_ptr = NULL; row_pointers = NULL; surface = NULL;
/* Create the PNG loading context structure */
png_ptr = lib.png_create_read_struct(PNG_LIBPNG_VER_STRING,
NULL,NULL,NULL);
if (png_ptr == NULL){
error = "Couldn't allocate memory for PNG file or incompatible PNG dll";
goto done;
}
/* Allocate/initialize the memory for image information. REQUIRED. */
info_ptr = lib.png_create_info_struct(png_ptr);
if (info_ptr == NULL) {
error = "Couldn't create image information for PNG file";
goto done;
}
/* Set error handling if you are using setjmp/longjmp method (this is
* the normal method of doing things with libpng). REQUIRED unless you
* set up your own error handlers in png_create_read_struct() earlier.
*/
#ifndef LIBPNG_VERSION_12
if ( setjmp(*lib.png_set_longjmp_fn(png_ptr, longjmp, sizeof (jmp_buf))) )
#else
if ( setjmp(png_ptr->jmpbuf) )
#endif
{
error = "Error reading the PNG file.";
goto done;
}
/* Set up the input control */
lib.png_set_read_fn(png_ptr, src, png_read_data);
/* Read PNG header info */
lib.png_read_info(png_ptr, info_ptr);
lib.png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
&color_type, &interlace_type, NULL, NULL);
/* tell libpng to strip 16 bit/color files down to 8 bits/color */
lib.png_set_strip_16(png_ptr) ;
/* Extract multiple pixels with bit depths of 1, 2, and 4 from a single
* byte into separate bytes (useful for paletted and grayscale images).
*/
lib.png_set_packing(png_ptr);
/* scale greyscale values to the range 0..255 */
if (color_type == PNG_COLOR_TYPE_GRAY)
lib.png_set_expand(png_ptr);
/* For images with a single "transparent colour", set colour key;
if more than one index has transparency, or if partially transparent
entries exist, use full alpha channel */
if (lib.png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) {
int num_trans;
Uint8 *trans;
lib.png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans, &transv);
if (color_type == PNG_COLOR_TYPE_PALETTE) {
/* Check if all tRNS entries are opaque except one */
int j, t = -1;
for (j = 0; j < num_trans; j++) {
if (trans[j] == 0) {
if (t >= 0) {
break;
}
t = j;
} else if (trans[j] != 255) {
break;
}
}
if (j == num_trans) {
/* exactly one transparent index */
ckey = t;
} else {
/* more than one transparent index, or translucency */
lib.png_set_expand(png_ptr);
}
} else {
ckey = 0; /* actual value will be set later */
}
}
if ( color_type == PNG_COLOR_TYPE_GRAY_ALPHA )
lib.png_set_gray_to_rgb(png_ptr);
lib.png_read_update_info(png_ptr, info_ptr);
lib.png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
&color_type, &interlace_type, NULL, NULL);
/* Allocate the SDL surface to hold the image */
Rmask = Gmask = Bmask = Amask = 0 ;
num_channels = lib.png_get_channels(png_ptr, info_ptr);
if ( num_channels >= 3 ) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = (num_channels == 4) ? 0xFF000000 : 0;
#else
int s = (num_channels == 4) ? 0 : 8;
Rmask = 0xFF000000 >> s;
Gmask = 0x00FF0000 >> s;
Bmask = 0x0000FF00 >> s;
Amask = 0x000000FF >> s;
#endif
}
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height,
bit_depth*num_channels, Rmask,Gmask,Bmask,Amask);
if ( surface == NULL ) {
error = SDL_GetError();
goto done;
}
if (ckey != -1) {
if (color_type != PNG_COLOR_TYPE_PALETTE) {
/* FIXME: Should these be truncated or shifted down? */
ckey = SDL_MapRGB(surface->format,
(Uint8)transv->red,
(Uint8)transv->green,
(Uint8)transv->blue);
}
SDL_SetColorKey(surface, SDL_TRUE, ckey);
}
/* Create the array of pointers to image data */
row_pointers = (png_bytep*) SDL_malloc(sizeof(png_bytep)*height);
if ( (row_pointers == NULL) ) {
error = "Out of memory";
goto done;
}
for (row = 0; row < (int)height; row++) {
row_pointers[row] = (png_bytep)
(Uint8 *)surface->pixels + row*surface->pitch;
}
/* Read the entire image in one go */
lib.png_read_image(png_ptr, row_pointers);
/* and we're done! (png_read_end() can be omitted if no processing of
* post-IDAT text/time/etc. is desired)
* In some cases it can't read PNG's created by some popular programs (ACDSEE),
* we do not want to process comments, so we omit png_read_end
lib.png_read_end(png_ptr, info_ptr);
*/
/* Load the palette, if any */
palette = surface->format->palette;
if ( palette ) {
int png_num_palette;
png_colorp png_palette;
lib.png_get_PLTE(png_ptr, info_ptr, &png_palette, &png_num_palette);
if (color_type == PNG_COLOR_TYPE_GRAY) {
palette->ncolors = 256;
for (i = 0; i < 256; i++) {
palette->colors[i].r = i;
palette->colors[i].g = i;
palette->colors[i].b = i;
}
} else if (png_num_palette > 0 ) {
palette->ncolors = png_num_palette;
for ( i=0; i<png_num_palette; ++i ) {
palette->colors[i].b = png_palette[i].blue;
palette->colors[i].g = png_palette[i].green;
palette->colors[i].r = png_palette[i].red;
}
}
}
done: /* Clean up and return */
if ( png_ptr ) {
lib.png_destroy_read_struct(&png_ptr,
info_ptr ? &info_ptr : (png_infopp)0,
(png_infopp)0);
}
if ( row_pointers ) {
SDL_free(row_pointers);
}
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
int IMG_InitPNG()
{
IMG_SetError("PNG images are not supported");
return(-1);
}
void IMG_QuitPNG()
{
}
/* See if an image is contained in a data source */
int IMG_isPNG(SDL_RWops *src)
{
return(0);
}
/* Load a PNG type image from an SDL datasource */
SDL_Surface *IMG_LoadPNG_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_PNG */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
/* We'll always have PNG save support */
#define SAVE_PNG
#ifdef SAVE_PNG
#include "miniz.h"
int IMG_SavePNG(SDL_Surface *surface, const char *file)
{
SDL_RWops *dst = SDL_RWFromFile(file, "wb");
if (dst) {
return IMG_SavePNG_RW(surface, dst, 1);
} else {
return -1;
}
}
int IMG_SavePNG_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst)
{
int result = -1;
if (dst) {
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
static const Uint32 png_format = SDL_PIXELFORMAT_ABGR8888;
#else
static const Uint32 png_format = SDL_PIXELFORMAT_RGBA8888;
#endif
size_t size;
void *png;
if (surface->format->format == png_format) {
png = tdefl_write_image_to_png_file_in_memory(surface->pixels, surface->w, surface->h, surface->pitch, surface->format->BytesPerPixel, &size);
} else {
SDL_Surface *cvt = SDL_ConvertSurfaceFormat(surface, png_format, 0);
if (cvt) {
png = tdefl_write_image_to_png_file_in_memory(cvt->pixels, cvt->w, cvt->h, cvt->pitch, cvt->format->BytesPerPixel, &size);
SDL_FreeSurface(cvt);
}
}
if (png) {
if (SDL_RWwrite(dst, png, size, 1)) {
result = 0;
}
SDL_free(png);
} else {
SDL_SetError("Failed to convert and save image");
}
if (freedst) {
SDL_RWclose(dst);
}
} else {
SDL_SetError("Passed NULL dst");
}
return result;
}
#endif /* SAVE_PNG */
project/jni/sdl2_image/IMG_pnm.c
+258
View File
@@ -0,0 +1,258 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* PNM (portable anymap) image loader:
*
* Supports: PBM, PGM and PPM, ASCII and binary formats
* (PBM and PGM are loaded as 8bpp surfaces)
* Does not support: maximum component value > 255
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_PNM
/* See if an image is contained in a data source */
int IMG_isPNM(SDL_RWops *src)
{
Sint64 start;
int is_PNM;
char magic[2];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_PNM = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
/*
* PNM magic signatures:
* P1 PBM, ascii format
* P2 PGM, ascii format
* P3 PPM, ascii format
* P4 PBM, binary format
* P5 PGM, binary format
* P6 PPM, binary format
* P7 PAM, a general wrapper for PNM data
*/
if ( magic[0] == 'P' && magic[1] >= '1' && magic[1] <= '6' ) {
is_PNM = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_PNM);
}
/* read a non-negative integer from the source. return -1 upon error */
static int ReadNumber(SDL_RWops *src)
{
int number;
unsigned char ch;
/* Initialize return value */
number = 0;
/* Skip leading whitespace */
do {
if ( ! SDL_RWread(src, &ch, 1, 1) ) {
return(0);
}
/* Eat comments as whitespace */
if ( ch == '#' ) { /* Comment is '#' to end of line */
do {
if ( ! SDL_RWread(src, &ch, 1, 1) ) {
return -1;
}
} while ( (ch != '\r') && (ch != '\n') );
}
} while ( isspace(ch) );
/* Add up the number */
do {
number *= 10;
number += ch-'0';
if ( !SDL_RWread(src, &ch, 1, 1) ) {
return -1;
}
} while ( isdigit(ch) );
return(number);
}
SDL_Surface *IMG_LoadPNM_RW(SDL_RWops *src)
{
Sint64 start;
SDL_Surface *surface = NULL;
int width, height;
int maxval, y, bpl;
Uint8 *row;
Uint8 *buf = NULL;
char *error = NULL;
Uint8 magic[2];
int ascii;
enum { PBM, PGM, PPM, PAM } kind;
#define ERROR(s) do { error = (s); goto done; } while(0)
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
SDL_RWread(src, magic, 2, 1);
kind = magic[1] - '1';
ascii = 1;
if(kind >= 3) {
ascii = 0;
kind -= 3;
}
width = ReadNumber(src);
height = ReadNumber(src);
if(width <= 0 || height <= 0)
ERROR("Unable to read image width and height");
if(kind != PBM) {
maxval = ReadNumber(src);
if(maxval <= 0 || maxval > 255)
ERROR("unsupported PNM format");
} else
maxval = 255; /* never scale PBMs */
/* binary PNM allows just a single character of whitespace after
the last parameter, and we've already consumed it */
if(kind == PPM) {
/* 24-bit surface in R,G,B byte order */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 24,
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
0x000000ff, 0x0000ff00, 0x00ff0000,
#else
0x00ff0000, 0x0000ff00, 0x000000ff,
#endif
0);
} else {
/* load PBM/PGM as 8-bit indexed images */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, width, height, 8,
0, 0, 0, 0);
}
if ( surface == NULL )
ERROR("Out of memory");
bpl = width * surface->format->BytesPerPixel;
if(kind == PGM) {
SDL_Color *c = surface->format->palette->colors;
int i;
for(i = 0; i < 256; i++)
c[i].r = c[i].g = c[i].b = i;
surface->format->palette->ncolors = 256;
} else if(kind == PBM) {
/* for some reason PBM has 1=black, 0=white */
SDL_Color *c = surface->format->palette->colors;
c[0].r = c[0].g = c[0].b = 255;
c[1].r = c[1].g = c[1].b = 0;
surface->format->palette->ncolors = 2;
bpl = (width + 7) >> 3;
buf = (Uint8 *)SDL_malloc(bpl);
if(buf == NULL)
ERROR("Out of memory");
}
/* Read the image into the surface */
row = (Uint8 *)surface->pixels;
for(y = 0; y < height; y++) {
if(ascii) {
int i;
if(kind == PBM) {
for(i = 0; i < width; i++) {
Uint8 ch;
do {
if(!SDL_RWread(src, &ch,
1, 1))
ERROR("file truncated");
ch -= '0';
} while(ch > 1);
row[i] = ch;
}
} else {
for(i = 0; i < bpl; i++) {
int c;
c = ReadNumber(src);
if(c < 0)
ERROR("file truncated");
row[i] = c;
}
}
} else {
Uint8 *dst = (kind == PBM) ? buf : row;
if(!SDL_RWread(src, dst, bpl, 1))
ERROR("file truncated");
if(kind == PBM) {
/* expand bitmap to 8bpp */
int i;
for(i = 0; i < width; i++) {
int bit = 7 - (i & 7);
row[i] = (buf[i >> 3] >> bit) & 1;
}
}
}
if(maxval < 255) {
/* scale up to full dynamic range (slow) */
int i;
for(i = 0; i < bpl; i++)
row[i] = row[i] * 255 / maxval;
}
row += surface->pitch;
}
done:
SDL_free(buf);
if(error) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isPNM(SDL_RWops *src)
{
return(0);
}
/* Load a PNM type image from an SDL datasource */
SDL_Surface *IMG_LoadPNM_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_PNM */
project/jni/sdl2_image/IMG_tga.c
+340
View File
@@ -0,0 +1,340 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a Targa image file loading framework */
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_TGA
/*
* A TGA loader for the SDL library
* Supports: Reading 8, 15, 16, 24 and 32bpp images, with alpha or colourkey,
* uncompressed or RLE encoded.
*
* 2000-06-10 Mattias Engdegård <f91-men@nada.kth.se>: initial version
* 2000-06-26 Mattias Engdegård <f91-men@nada.kth.se>: read greyscale TGAs
* 2000-08-09 Mattias Engdegård <f91-men@nada.kth.se>: alpha inversion removed
*/
struct TGAheader {
Uint8 infolen; /* length of info field */
Uint8 has_cmap; /* 1 if image has colormap, 0 otherwise */
Uint8 type;
Uint8 cmap_start[2]; /* index of first colormap entry */
Uint8 cmap_len[2]; /* number of entries in colormap */
Uint8 cmap_bits; /* bits per colormap entry */
Uint8 yorigin[2]; /* image origin (ignored here) */
Uint8 xorigin[2];
Uint8 width[2]; /* image size */
Uint8 height[2];
Uint8 pixel_bits; /* bits/pixel */
Uint8 flags;
};
enum tga_type {
TGA_TYPE_INDEXED = 1,
TGA_TYPE_RGB = 2,
TGA_TYPE_BW = 3,
TGA_TYPE_RLE_INDEXED = 9,
TGA_TYPE_RLE_RGB = 10,
TGA_TYPE_RLE_BW = 11
};
#define TGA_INTERLEAVE_MASK 0xc0
#define TGA_INTERLEAVE_NONE 0x00
#define TGA_INTERLEAVE_2WAY 0x40
#define TGA_INTERLEAVE_4WAY 0x80
#define TGA_ORIGIN_MASK 0x30
#define TGA_ORIGIN_LEFT 0x00
#define TGA_ORIGIN_RIGHT 0x10
#define TGA_ORIGIN_LOWER 0x00
#define TGA_ORIGIN_UPPER 0x20
/* read/write unaligned little-endian 16-bit ints */
#define LE16(p) ((p)[0] + ((p)[1] << 8))
#define SETLE16(p, v) ((p)[0] = (v), (p)[1] = (v) >> 8)
/* Load a TGA type image from an SDL datasource */
SDL_Surface *IMG_LoadTGA_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
struct TGAheader hdr;
int rle = 0;
int alpha = 0;
int indexed = 0;
int grey = 0;
int ckey = -1;
int ncols, w, h;
SDL_Surface *img = NULL;
Uint32 rmask, gmask, bmask, amask;
Uint8 *dst;
int i;
int bpp;
int lstep;
Uint32 pixel;
int count, rep;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if(!SDL_RWread(src, &hdr, sizeof(hdr), 1)) {
error = "Error reading TGA data";
goto error;
}
ncols = LE16(hdr.cmap_len);
switch(hdr.type) {
case TGA_TYPE_RLE_INDEXED:
rle = 1;
/* fallthrough */
case TGA_TYPE_INDEXED:
if(!hdr.has_cmap || hdr.pixel_bits != 8 || ncols > 256)
goto unsupported;
indexed = 1;
break;
case TGA_TYPE_RLE_RGB:
rle = 1;
/* fallthrough */
case TGA_TYPE_RGB:
indexed = 0;
break;
case TGA_TYPE_RLE_BW:
rle = 1;
/* fallthrough */
case TGA_TYPE_BW:
if(hdr.pixel_bits != 8)
goto unsupported;
/* Treat greyscale as 8bpp indexed images */
indexed = grey = 1;
break;
default:
goto unsupported;
}
bpp = (hdr.pixel_bits + 7) >> 3;
rmask = gmask = bmask = amask = 0;
switch(hdr.pixel_bits) {
case 8:
if(!indexed) {
goto unsupported;
}
break;
case 15:
case 16:
/* 15 and 16bpp both seem to use 5 bits/plane. The extra alpha bit
is ignored for now. */
rmask = 0x7c00;
gmask = 0x03e0;
bmask = 0x001f;
break;
case 32:
alpha = 1;
/* fallthrough */
case 24:
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
{
int s = alpha ? 0 : 8;
amask = 0x000000ff >> s;
rmask = 0x0000ff00 >> s;
gmask = 0x00ff0000 >> s;
bmask = 0xff000000 >> s;
}
#else
amask = alpha ? 0xff000000 : 0;
rmask = 0x00ff0000;
gmask = 0x0000ff00;
bmask = 0x000000ff;
#endif
break;
default:
goto unsupported;
}
if((hdr.flags & TGA_INTERLEAVE_MASK) != TGA_INTERLEAVE_NONE
|| hdr.flags & TGA_ORIGIN_RIGHT) {
goto unsupported;
}
SDL_RWseek(src, hdr.infolen, RW_SEEK_CUR); /* skip info field */
w = LE16(hdr.width);
h = LE16(hdr.height);
img = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h,
bpp * 8,
rmask, gmask, bmask, amask);
if(img == NULL) {
error = "Out of memory";
goto error;
}
if(hdr.has_cmap) {
int palsiz = ncols * ((hdr.cmap_bits + 7) >> 3);
if(indexed && !grey) {
Uint8 *pal = (Uint8 *)SDL_malloc(palsiz), *p = pal;
SDL_Color *colors = img->format->palette->colors;
img->format->palette->ncolors = ncols;
SDL_RWread(src, pal, palsiz, 1);
for(i = 0; i < ncols; i++) {
switch(hdr.cmap_bits) {
case 15:
case 16:
{
Uint16 c = p[0] + (p[1] << 8);
p += 2;
colors[i].r = (c >> 7) & 0xf8;
colors[i].g = (c >> 2) & 0xf8;
colors[i].b = c << 3;
}
break;
case 24:
case 32:
colors[i].b = *p++;
colors[i].g = *p++;
colors[i].r = *p++;
if(hdr.cmap_bits == 32 && *p++ < 128)
ckey = i;
break;
}
}
SDL_free(pal);
if(ckey >= 0)
SDL_SetColorKey(img, SDL_TRUE, ckey);
} else {
/* skip unneeded colormap */
SDL_RWseek(src, palsiz, RW_SEEK_CUR);
}
}
if(grey) {
SDL_Color *colors = img->format->palette->colors;
for(i = 0; i < 256; i++)
colors[i].r = colors[i].g = colors[i].b = i;
img->format->palette->ncolors = 256;
}
if(hdr.flags & TGA_ORIGIN_UPPER) {
lstep = img->pitch;
dst = (Uint8 *)img->pixels;
} else {
lstep = -img->pitch;
dst = (Uint8 *)img->pixels + (h - 1) * img->pitch;
}
/* The RLE decoding code is slightly convoluted since we can't rely on
spans not to wrap across scan lines */
count = rep = 0;
for(i = 0; i < h; i++) {
if(rle) {
int x = 0;
for(;;) {
Uint8 c;
if(count) {
int n = count;
if(n > w - x)
n = w - x;
SDL_RWread(src, dst + x * bpp, n * bpp, 1);
count -= n;
x += n;
if(x == w)
break;
} else if(rep) {
int n = rep;
if(n > w - x)
n = w - x;
rep -= n;
while(n--) {
SDL_memcpy(dst + x * bpp, &pixel, bpp);
x++;
}
if(x == w)
break;
}
SDL_RWread(src, &c, 1, 1);
if(c & 0x80) {
SDL_RWread(src, &pixel, bpp, 1);
rep = (c & 0x7f) + 1;
} else {
count = c + 1;
}
}
} else {
SDL_RWread(src, dst, w * bpp, 1);
}
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
if (bpp == 2) {
/* swap byte order */
int x;
Uint16 *p = (Uint16 *)dst;
for(x = 0; x < w; x++)
p[x] = SDL_Swap16(p[x]);
}
#endif
dst += lstep;
}
return img;
unsupported:
error = "Unsupported TGA format";
error:
SDL_RWseek(src, start, RW_SEEK_SET);
if ( img ) {
SDL_FreeSurface(img);
}
IMG_SetError(error);
return NULL;
}
#else
/* dummy TGA load routine */
SDL_Surface *IMG_LoadTGA_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_TGA */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
project/jni/sdl2_image/IMG_tif.c
+298
View File
@@ -0,0 +1,298 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#if !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND)
/* This is a TIFF image file loading framework */
#include <stdio.h>
#include "SDL_image.h"
#ifdef LOAD_TIF
#include <tiffio.h>
static struct {
int loaded;
void *handle;
TIFF* (*TIFFClientOpen)(const char*, const char*, thandle_t, TIFFReadWriteProc, TIFFReadWriteProc, TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, TIFFMapFileProc, TIFFUnmapFileProc);
void (*TIFFClose)(TIFF*);
int (*TIFFGetField)(TIFF*, ttag_t, ...);
int (*TIFFReadRGBAImage)(TIFF*, uint32, uint32, uint32*, int);
TIFFErrorHandler (*TIFFSetErrorHandler)(TIFFErrorHandler);
} lib;
#ifdef LOAD_TIF_DYNAMIC
int IMG_InitTIF()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_TIF_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.TIFFClientOpen =
(TIFF* (*)(const char*, const char*, thandle_t, TIFFReadWriteProc, TIFFReadWriteProc, TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, TIFFMapFileProc, TIFFUnmapFileProc))
SDL_LoadFunction(lib.handle, "TIFFClientOpen");
if ( lib.TIFFClientOpen == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFClose =
(void (*)(TIFF*))
SDL_LoadFunction(lib.handle, "TIFFClose");
if ( lib.TIFFClose == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFGetField =
(int (*)(TIFF*, ttag_t, ...))
SDL_LoadFunction(lib.handle, "TIFFGetField");
if ( lib.TIFFGetField == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFReadRGBAImage =
(int (*)(TIFF*, uint32, uint32, uint32*, int))
SDL_LoadFunction(lib.handle, "TIFFReadRGBAImage");
if ( lib.TIFFReadRGBAImage == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.TIFFSetErrorHandler =
(TIFFErrorHandler (*)(TIFFErrorHandler))
SDL_LoadFunction(lib.handle, "TIFFSetErrorHandler");
if ( lib.TIFFSetErrorHandler == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
}
++lib.loaded;
return 0;
}
void IMG_QuitTIF()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitTIF()
{
if ( lib.loaded == 0 ) {
lib.TIFFClientOpen = TIFFClientOpen;
lib.TIFFClose = TIFFClose;
lib.TIFFGetField = TIFFGetField;
lib.TIFFReadRGBAImage = TIFFReadRGBAImage;
lib.TIFFSetErrorHandler = TIFFSetErrorHandler;
}
++lib.loaded;
return 0;
}
void IMG_QuitTIF()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_TIF_DYNAMIC */
/*
* These are the thunking routine to use the SDL_RWops* routines from
* libtiff's internals.
*/
static tsize_t tiff_read(thandle_t fd, tdata_t buf, tsize_t size)
{
return SDL_RWread((SDL_RWops*)fd, buf, 1, size);
}
static toff_t tiff_seek(thandle_t fd, toff_t offset, int origin)
{
return SDL_RWseek((SDL_RWops*)fd, offset, origin);
}
static tsize_t tiff_write(thandle_t fd, tdata_t buf, tsize_t size)
{
return SDL_RWwrite((SDL_RWops*)fd, buf, 1, size);
}
static int tiff_close(thandle_t fd)
{
/*
* We don't want libtiff closing our SDL_RWops*, but if it's not given
* a routine to try, and if the image isn't a TIFF, it'll segfault.
*/
return 0;
}
static int tiff_map(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
return (0);
}
static void tiff_unmap(thandle_t fd, tdata_t base, toff_t size)
{
return;
}
static toff_t tiff_size(thandle_t fd)
{
Sint64 save_pos;
toff_t size;
save_pos = SDL_RWtell((SDL_RWops*)fd);
SDL_RWseek((SDL_RWops*)fd, 0, RW_SEEK_END);
size = SDL_RWtell((SDL_RWops*)fd);
SDL_RWseek((SDL_RWops*)fd, save_pos, RW_SEEK_SET);
return size;
}
int IMG_isTIF(SDL_RWops* src)
{
Sint64 start;
int is_TIF;
Uint8 magic[4];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_TIF = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( (magic[0] == 'I' &&
magic[1] == 'I' &&
magic[2] == 0x2a &&
magic[3] == 0x00) ||
(magic[0] == 'M' &&
magic[1] == 'M' &&
magic[2] == 0x00 &&
magic[3] == 0x2a) ) {
is_TIF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_TIF);
}
SDL_Surface* IMG_LoadTIF_RW(SDL_RWops* src)
{
Sint64 start;
TIFF* tiff;
SDL_Surface* surface = NULL;
Uint32 img_width, img_height;
Uint32 Rmask, Gmask, Bmask, Amask;
Uint32 x, y;
Uint32 half;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_TIF) ) {
return NULL;
}
/* turn off memory mapped access with the m flag */
tiff = lib.TIFFClientOpen("SDL_image", "rm", (thandle_t)src,
tiff_read, tiff_write, tiff_seek, tiff_close, tiff_size, tiff_map, tiff_unmap);
if(!tiff)
goto error;
/* Retrieve the dimensions of the image from the TIFF tags */
lib.TIFFGetField(tiff, TIFFTAG_IMAGEWIDTH, &img_width);
lib.TIFFGetField(tiff, TIFFTAG_IMAGELENGTH, &img_height);
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = 0xFF000000;
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, img_width, img_height, 32,
Rmask, Gmask, Bmask, Amask);
if(!surface)
goto error;
if(!lib.TIFFReadRGBAImage(tiff, img_width, img_height, (uint32 *)surface->pixels, 0))
goto error;
/* libtiff loads the image upside-down, flip it back */
half = img_height / 2;
for(y = 0; y < half; y++)
{
Uint32 *top = (Uint32 *)surface->pixels + y * surface->pitch/4;
Uint32 *bot = (Uint32 *)surface->pixels
+ (img_height - y - 1) * surface->pitch/4;
for(x = 0; x < img_width; x++)
{
Uint32 tmp = top[x];
top[x] = bot[x];
bot[x] = tmp;
}
}
lib.TIFFClose(tiff);
return surface;
error:
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
}
return NULL;
}
#else
int IMG_InitTIF()
{
IMG_SetError("TIFF images are not supported");
return(-1);
}
void IMG_QuitTIF()
{
}
/* See if an image is contained in a data source */
int IMG_isTIF(SDL_RWops *src)
{
return(0);
}
/* Load a TIFF type image from an SDL datasource */
SDL_Surface *IMG_LoadTIF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_TIF */
#endif /* !defined(__APPLE__) || defined(SDL_IMAGE_USE_COMMON_BACKEND) */
project/jni/sdl2_image/IMG_webp.c
+317
View File
@@ -0,0 +1,317 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a WEBP image file loading framework */
#include <stdlib.h>
#include <stdio.h>
#include "SDL_image.h"
#ifdef LOAD_WEBP
/*=============================================================================
File: SDL_webp.c
Purpose: A WEBP loader for the SDL library
Revision:
Created by: Michael Bonfils (Murlock) (26 November 2011)
murlock42@gmail.com
=============================================================================*/
#include "SDL_endian.h"
#ifdef macintosh
#define MACOS
#endif
#include <webp/decode.h>
static struct {
int loaded;
void *handle;
VP8StatusCode (*webp_get_features_internal) (const uint8_t *data, size_t data_size, WebPBitstreamFeatures* features, int decoder_abi_version);
uint8_t* (*webp_decode_rgb_into) (const uint8_t* data, size_t data_size, uint8_t* output_buffer, size_t output_buffer_size, int output_stride);
uint8_t* (*webp_decode_rgba_into) (const uint8_t* data, size_t data_size, uint8_t* output_buffer, size_t output_buffer_size, int output_stride);
} lib;
#ifdef LOAD_WEBP_DYNAMIC
int IMG_InitWEBP()
{
if ( lib.loaded == 0 ) {
lib.handle = SDL_LoadObject(LOAD_WEBP_DYNAMIC);
if ( lib.handle == NULL ) {
return -1;
}
lib.webp_get_features_internal =
( VP8StatusCode (*) (const uint8_t *, size_t, WebPBitstreamFeatures*, int) )
SDL_LoadFunction(lib.handle, "WebPGetFeaturesInternal" );
if ( lib.webp_get_features_internal == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.webp_decode_rgb_into =
( uint8_t* (*) (const uint8_t*, size_t, uint8_t*, size_t, int ) )
SDL_LoadFunction(lib.handle, "WebPDecodeRGBInto" );
if ( lib.webp_decode_rgb_into == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
lib.webp_decode_rgba_into =
( uint8_t* (*) (const uint8_t*, size_t, uint8_t*, size_t, int ) )
SDL_LoadFunction(lib.handle, "WebPDecodeRGBAInto" );
if ( lib.webp_decode_rgba_into == NULL ) {
SDL_UnloadObject(lib.handle);
return -1;
}
}
++lib.loaded;
return 0;
}
void IMG_QuitWEBP()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
SDL_UnloadObject(lib.handle);
}
--lib.loaded;
}
#else
int IMG_InitWEBP()
{
if ( lib.loaded == 0 ) {
#ifdef __MACOSX__
extern VP8StatusCode WebPGetFeaturesInternal(const uint8_t*, size_t, WebPBitstreamFeatures*, int) __attribute__((weak_import));
if ( WebPGetFeaturesInternal == NULL )
{
/* Missing weakly linked framework */
IMG_SetError("Missing webp.framework");
return -1;
}
#endif // __MACOSX__
lib.webp_get_features_internal = WebPGetFeaturesInternal;
lib.webp_decode_rgb_into = WebPDecodeRGBInto;
lib.webp_decode_rgba_into = WebPDecodeRGBAInto;
}
++lib.loaded;
return 0;
}
void IMG_QuitWEBP()
{
if ( lib.loaded == 0 ) {
return;
}
if ( lib.loaded == 1 ) {
}
--lib.loaded;
}
#endif /* LOAD_WEBP_DYNAMIC */
static int webp_getinfo( SDL_RWops *src, int *datasize ) {
Sint64 start;
int is_WEBP;
Uint8 magic[20];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_WEBP = 0;
if ( SDL_RWread(src, magic, 1, sizeof(magic)) == sizeof(magic) ) {
if ( magic[ 0] == 'R' &&
magic[ 1] == 'I' &&
magic[ 2] == 'F' &&
magic[ 3] == 'F' &&
magic[ 8] == 'W' &&
magic[ 9] == 'E' &&
magic[10] == 'B' &&
magic[11] == 'P' &&
magic[12] == 'V' &&
magic[13] == 'P' &&
magic[14] == '8' &&
#if WEBP_DECODER_ABI_VERSION < 0x0003 /* old versions don't support WEBPVP8X and WEBPVP8L */
magic[15] == ' ') {
#else
(magic[15] == ' ' || magic[15] == 'X' || magic[15] == 'L')) {
#endif
is_WEBP = 1;
if ( datasize ) {
*datasize = (int)SDL_RWseek(src, 0, SEEK_END);
}
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_WEBP);
}
/* See if an image is contained in a data source */
int IMG_isWEBP(SDL_RWops *src)
{
return webp_getinfo( src, NULL );
}
SDL_Surface *IMG_LoadWEBP_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *volatile surface = NULL;
Uint32 Rmask;
Uint32 Gmask;
Uint32 Bmask;
Uint32 Amask;
WebPBitstreamFeatures features;
int raw_data_size;
uint8_t *raw_data = NULL;
int r;
uint8_t *ret;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
if ( !IMG_Init(IMG_INIT_WEBP) ) {
goto error;
}
raw_data_size = -1;
if ( !webp_getinfo( src, &raw_data_size ) ) {
error = "Invalid WEBP";
goto error;
}
// seek to start of file
SDL_RWseek(src, 0, RW_SEEK_SET );
raw_data = (uint8_t*) SDL_malloc( raw_data_size );
if ( raw_data == NULL ) {
error = "Failed to allocate enought buffer for WEBP";
goto error;
}
r = SDL_RWread(src, raw_data, 1, raw_data_size );
if ( r != raw_data_size ) {
error = "Failed to read WEBP";
goto error;
}
#if 0
// extract size of picture, not interesting since we don't know about alpha channel
int width = -1, height = -1;
if ( !WebPGetInfo( raw_data, raw_data_size, &width, &height ) ) {
printf("WebPGetInfo has failed\n" );
return NULL;
}
#endif
if ( lib.webp_get_features_internal( raw_data, raw_data_size, &features, WEBP_DECODER_ABI_VERSION ) != VP8_STATUS_OK ) {
error = "WebPGetFeatures has failed";
goto error;
}
/* Check if it's ok !*/
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
Rmask = 0x000000FF;
Gmask = 0x0000FF00;
Bmask = 0x00FF0000;
Amask = (features.has_alpha) ? 0xFF000000 : 0;
#else
s = (features.has_alpha) ? 0 : 8;
Rmask = 0xFF000000 >> s;
Gmask = 0x00FF0000 >> s;
Bmask = 0x0000FF00 >> s;
Amask = 0x000000FF >> s;
#endif
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
features.width, features.height,
features.has_alpha?32:24, Rmask,Gmask,Bmask,Amask);
if ( surface == NULL ) {
error = "Failed to allocate SDL_Surface";
goto error;
}
if ( features.has_alpha ) {
ret = lib.webp_decode_rgba_into( raw_data, raw_data_size, (uint8_t *)surface->pixels, surface->pitch * surface->h, surface->pitch );
} else {
ret = lib.webp_decode_rgb_into( raw_data, raw_data_size, (uint8_t *)surface->pixels, surface->pitch * surface->h, surface->pitch );
}
if ( !ret ) {
error = "Failed to decode WEBP";
goto error;
}
return surface;
error:
if ( surface ) {
SDL_FreeSurface( surface );
}
if ( raw_data ) {
SDL_free( raw_data );
}
if ( error ) {
IMG_SetError( error );
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(NULL);
}
#else
int IMG_InitWEBP()
{
IMG_SetError("WEBP images are not supported");
return(-1);
}
void IMG_QuitWEBP()
{
}
/* See if an image is contained in a data source */
int IMG_isWEBP(SDL_RWops *src)
{
return(0);
}
/* Load a WEBP type image from an SDL datasource */
SDL_Surface *IMG_LoadWEBP_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_WEBP */
project/jni/sdl2_image/IMG_xcf.c
+841
View File
@@ -0,0 +1,841 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a XCF image file loading framework */
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "SDL_endian.h"
#include "SDL_image.h"
#ifdef LOAD_XCF
#if DEBUG
static char prop_names [][30] = {
"end",
"colormap",
"active_layer",
"active_channel",
"selection",
"floating_selection",
"opacity",
"mode",
"visible",
"linked",
"preserve_transparency",
"apply_mask",
"edit_mask",
"show_mask",
"show_masked",
"offsets",
"color",
"compression",
"guides",
"resolution",
"tattoo",
"parasites",
"unit",
"paths",
"user_unit"
};
#endif
typedef enum
{
PROP_END = 0,
PROP_COLORMAP = 1,
PROP_ACTIVE_LAYER = 2,
PROP_ACTIVE_CHANNEL = 3,
PROP_SELECTION = 4,
PROP_FLOATING_SELECTION = 5,
PROP_OPACITY = 6,
PROP_MODE = 7,
PROP_VISIBLE = 8,
PROP_LINKED = 9,
PROP_PRESERVE_TRANSPARENCY = 10,
PROP_APPLY_MASK = 11,
PROP_EDIT_MASK = 12,
PROP_SHOW_MASK = 13,
PROP_SHOW_MASKED = 14,
PROP_OFFSETS = 15,
PROP_COLOR = 16,
PROP_COMPRESSION = 17,
PROP_GUIDES = 18,
PROP_RESOLUTION = 19,
PROP_TATTOO = 20,
PROP_PARASITES = 21,
PROP_UNIT = 22,
PROP_PATHS = 23,
PROP_USER_UNIT = 24
} xcf_prop_type;
typedef enum {
COMPR_NONE = 0,
COMPR_RLE = 1,
COMPR_ZLIB = 2,
COMPR_FRACTAL = 3
} xcf_compr_type;
typedef enum {
IMAGE_RGB = 0,
IMAGE_GREYSCALE = 1,
IMAGE_INDEXED = 2
} xcf_image_type;
typedef struct {
Uint32 id;
Uint32 length;
union {
struct {
Uint32 num;
char * cmap;
} colormap; // 1
struct {
Uint32 drawable_offset;
} floating_selection; // 5
Sint32 opacity;
Sint32 mode;
int visible;
int linked;
int preserve_transparency;
int apply_mask;
int show_mask;
struct {
Sint32 x;
Sint32 y;
} offset;
unsigned char color [3];
Uint8 compression;
struct {
Sint32 x;
Sint32 y;
} resolution;
struct {
char * name;
Uint32 flags;
Uint32 size;
char * data;
} parasite;
} data;
} xcf_prop;
typedef struct {
char sign [14];
Uint32 width;
Uint32 height;
Sint32 image_type;
xcf_prop * properties;
Uint32 * layer_file_offsets;
Uint32 * channel_file_offsets;
xcf_compr_type compr;
Uint32 cm_num;
unsigned char * cm_map;
} xcf_header;
typedef struct {
Uint32 width;
Uint32 height;
Sint32 layer_type;
char * name;
xcf_prop * properties;
Uint32 hierarchy_file_offset;
Uint32 layer_mask_offset;
Uint32 offset_x;
Uint32 offset_y;
int visible;
} xcf_layer;
typedef struct {
Uint32 width;
Uint32 height;
char * name;
xcf_prop * properties;
Uint32 hierarchy_file_offset;
Uint32 color;
Uint32 opacity;
int selection;
int visible;
} xcf_channel;
typedef struct {
Uint32 width;
Uint32 height;
Uint32 bpp;
Uint32 * level_file_offsets;
} xcf_hierarchy;
typedef struct {
Uint32 width;
Uint32 height;
Uint32 * tile_file_offsets;
} xcf_level;
typedef unsigned char * xcf_tile;
typedef unsigned char * (* load_tile_type) (SDL_RWops *, Uint32, int, int, int);
/* See if an image is contained in a data source */
int IMG_isXCF(SDL_RWops *src)
{
Sint64 start;
int is_XCF;
char magic[14];
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XCF = 0;
if ( SDL_RWread(src, magic, sizeof(magic), 1) ) {
if (SDL_strncmp(magic, "gimp xcf ", 9) == 0) {
is_XCF = 1;
}
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XCF);
}
static char * read_string (SDL_RWops * src) {
Uint32 tmp;
char * data;
tmp = SDL_ReadBE32 (src);
if (tmp > 0) {
data = (char *) SDL_malloc (sizeof (char) * tmp);
SDL_RWread (src, data, tmp, 1);
}
else {
data = NULL;
}
return data;
}
static Uint32 Swap32 (Uint32 v) {
return
((v & 0x000000FF) << 16)
| ((v & 0x0000FF00))
| ((v & 0x00FF0000) >> 16)
| ((v & 0xFF000000));
}
static void xcf_read_property (SDL_RWops * src, xcf_prop * prop) {
prop->id = SDL_ReadBE32 (src);
prop->length = SDL_ReadBE32 (src);
#if DEBUG
printf ("%.8X: %s: %d\n", SDL_RWtell (src), prop->id < 25 ? prop_names [prop->id] : "unknown", prop->length);
#endif
switch (prop->id) {
case PROP_COLORMAP:
prop->data.colormap.num = SDL_ReadBE32 (src);
prop->data.colormap.cmap = (char *) SDL_malloc (sizeof (char) * prop->data.colormap.num * 3);
SDL_RWread (src, prop->data.colormap.cmap, prop->data.colormap.num*3, 1);
break;
case PROP_OFFSETS:
prop->data.offset.x = SDL_ReadBE32 (src);
prop->data.offset.y = SDL_ReadBE32 (src);
break;
case PROP_OPACITY:
prop->data.opacity = SDL_ReadBE32 (src);
break;
case PROP_COMPRESSION:
case PROP_COLOR:
SDL_RWread (src, &prop->data, prop->length, 1);
break;
case PROP_VISIBLE:
prop->data.visible = SDL_ReadBE32 (src);
break;
default:
// SDL_RWread (src, &prop->data, prop->length, 1);
SDL_RWseek (src, prop->length, RW_SEEK_CUR);
}
}
static void free_xcf_header (xcf_header * h) {
if (h->cm_num)
SDL_free (h->cm_map);
if (h->layer_file_offsets)
SDL_free (h->layer_file_offsets);
SDL_free (h);
}
static xcf_header * read_xcf_header (SDL_RWops * src) {
xcf_header * h;
xcf_prop prop;
h = (xcf_header *) SDL_malloc (sizeof (xcf_header));
SDL_RWread (src, h->sign, 14, 1);
h->width = SDL_ReadBE32 (src);
h->height = SDL_ReadBE32 (src);
h->image_type = SDL_ReadBE32 (src);
h->properties = NULL;
h->layer_file_offsets = NULL;
h->compr = COMPR_NONE;
h->cm_num = 0;
h->cm_map = NULL;
// Just read, don't save
do {
xcf_read_property (src, &prop);
if (prop.id == PROP_COMPRESSION)
h->compr = (xcf_compr_type)prop.data.compression;
else if (prop.id == PROP_COLORMAP) {
// unused var: int i;
h->cm_num = prop.data.colormap.num;
h->cm_map = (unsigned char *) SDL_malloc (sizeof (unsigned char) * 3 * h->cm_num);
SDL_memcpy (h->cm_map, prop.data.colormap.cmap, 3*sizeof (char)*h->cm_num);
SDL_free (prop.data.colormap.cmap);
}
} while (prop.id != PROP_END);
return h;
}
static void free_xcf_layer (xcf_layer * l) {
SDL_free (l->name);
SDL_free (l);
}
static xcf_layer * read_xcf_layer (SDL_RWops * src) {
xcf_layer * l;
xcf_prop prop;
l = (xcf_layer *) SDL_malloc (sizeof (xcf_layer));
l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->layer_type = SDL_ReadBE32 (src);
l->name = read_string (src);
do {
xcf_read_property (src, &prop);
if (prop.id == PROP_OFFSETS) {
l->offset_x = prop.data.offset.x;
l->offset_y = prop.data.offset.y;
} else if (prop.id == PROP_VISIBLE) {
l->visible = prop.data.visible ? 1 : 0;
}
} while (prop.id != PROP_END);
l->hierarchy_file_offset = SDL_ReadBE32 (src);
l->layer_mask_offset = SDL_ReadBE32 (src);
return l;
}
static void free_xcf_channel (xcf_channel * c) {
SDL_free (c->name);
SDL_free (c);
}
static xcf_channel * read_xcf_channel (SDL_RWops * src) {
xcf_channel * l;
xcf_prop prop;
l = (xcf_channel *) SDL_malloc (sizeof (xcf_channel));
l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->name = read_string (src);
l->selection = 0;
do {
xcf_read_property (src, &prop);
switch (prop.id) {
case PROP_OPACITY:
l->opacity = prop.data.opacity << 24;
break;
case PROP_COLOR:
l->color = ((Uint32) prop.data.color[0] << 16)
| ((Uint32) prop.data.color[1] << 8)
| ((Uint32) prop.data.color[2]);
break;
case PROP_SELECTION:
l->selection = 1;
break;
case PROP_VISIBLE:
l->visible = prop.data.visible ? 1 : 0;
break;
default:
;
}
} while (prop.id != PROP_END);
l->hierarchy_file_offset = SDL_ReadBE32 (src);
return l;
}
static void free_xcf_hierarchy (xcf_hierarchy * h) {
SDL_free (h->level_file_offsets);
SDL_free (h);
}
static xcf_hierarchy * read_xcf_hierarchy (SDL_RWops * src) {
xcf_hierarchy * h;
int i;
h = (xcf_hierarchy *) SDL_malloc (sizeof (xcf_hierarchy));
h->width = SDL_ReadBE32 (src);
h->height = SDL_ReadBE32 (src);
h->bpp = SDL_ReadBE32 (src);
h->level_file_offsets = NULL;
i = 0;
do {
h->level_file_offsets = (Uint32 *) SDL_realloc (h->level_file_offsets, sizeof (Uint32) * (i+1));
h->level_file_offsets [i] = SDL_ReadBE32 (src);
} while (h->level_file_offsets [i++]);
return h;
}
static void free_xcf_level (xcf_level * l) {
SDL_free (l->tile_file_offsets);
SDL_free (l);
}
static xcf_level * read_xcf_level (SDL_RWops * src) {
xcf_level * l;
int i;
l = (xcf_level *) SDL_malloc (sizeof (xcf_level));
l->width = SDL_ReadBE32 (src);
l->height = SDL_ReadBE32 (src);
l->tile_file_offsets = NULL;
i = 0;
do {
l->tile_file_offsets = (Uint32 *) SDL_realloc (l->tile_file_offsets, sizeof (Uint32) * (i+1));
l->tile_file_offsets [i] = SDL_ReadBE32 (src);
} while (l->tile_file_offsets [i++]);
return l;
}
static void free_xcf_tile (unsigned char * t) {
SDL_free (t);
}
static unsigned char * load_xcf_tile_none (SDL_RWops * src, Uint32 len, int bpp, int x, int y) {
unsigned char * load;
load = (unsigned char *) SDL_malloc (len); // expect this is okay
SDL_RWread (src, load, len, 1);
return load;
}
static unsigned char * load_xcf_tile_rle (SDL_RWops * src, Uint32 len, int bpp, int x, int y) {
unsigned char * load, * t, * data, * d;
Uint32 reallen;
int i, size, count, j, length;
unsigned char val;
t = load = (unsigned char *) SDL_malloc (len);
reallen = SDL_RWread (src, t, 1, len);
data = (unsigned char *) SDL_malloc (x*y*bpp);
for (i = 0; i < bpp; i++) {
d = data + i;
size = x*y;
count = 0;
while (size > 0) {
val = *t++;
length = val;
if (length >= 128) {
length = 255 - (length - 1);
if (length == 128) {
length = (*t << 8) + t[1];
t += 2;
}
count += length;
size -= length;
while (length-- > 0) {
*d = *t++;
d += bpp;
}
}
else {
length += 1;
if (length == 128) {
length = (*t << 8) + t[1];
t += 2;
}
count += length;
size -= length;
val = *t++;
for (j = 0; j < length; j++) {
*d = val;
d += bpp;
}
}
}
}
SDL_free (load);
return (data);
}
static Uint32 rgb2grey (Uint32 a) {
Uint8 l;
l = (Uint8)(0.2990 * ((a & 0x00FF0000) >> 16)
+ 0.5870 * ((a & 0x0000FF00) >> 8)
+ 0.1140 * ((a & 0x000000FF)));
return (l << 16) | (l << 8) | l;
}
static void create_channel_surface (SDL_Surface * surf, xcf_image_type itype, Uint32 color, Uint32 opacity) {
Uint32 c = 0;
switch (itype) {
case IMAGE_RGB:
case IMAGE_INDEXED:
c = opacity | color;
break;
case IMAGE_GREYSCALE:
c = opacity | rgb2grey (color);
break;
}
SDL_FillRect (surf, NULL, c);
}
static int do_layer_surface (SDL_Surface * surface, SDL_RWops * src, xcf_header * head, xcf_layer * layer, load_tile_type load_tile) {
xcf_hierarchy * hierarchy;
xcf_level * level;
unsigned char * tile;
Uint8 * p8;
Uint16 * p16;
Uint32 * p;
int i, j;
Uint32 x, y, tx, ty, ox, oy;
Uint32 *row;
SDL_RWseek (src, layer->hierarchy_file_offset, RW_SEEK_SET);
hierarchy = read_xcf_hierarchy (src);
level = NULL;
for (i = 0; hierarchy->level_file_offsets [i]; i++) {
SDL_RWseek (src, hierarchy->level_file_offsets [i], RW_SEEK_SET);
level = read_xcf_level (src);
ty = tx = 0;
for (j = 0; level->tile_file_offsets [j]; j++) {
SDL_RWseek (src, level->tile_file_offsets [j], RW_SEEK_SET);
ox = tx+64 > level->width ? level->width % 64 : 64;
oy = ty+64 > level->height ? level->height % 64 : 64;
if (level->tile_file_offsets [j+1]) {
tile = load_tile
(src,
level->tile_file_offsets [j+1] - level->tile_file_offsets [j],
hierarchy->bpp,
ox, oy);
}
else {
tile = load_tile
(src,
ox*oy*6,
hierarchy->bpp,
ox, oy);
}
p8 = tile;
p16 = (Uint16 *) p8;
p = (Uint32 *) p8;
for (y=ty; y < ty+oy; y++) {
row = (Uint32 *)((Uint8 *)surface->pixels + y*surface->pitch + tx*4);
switch (hierarchy->bpp) {
case 4:
for (x=tx; x < tx+ox; x++)
*row++ = Swap32 (*p++);
break;
case 3:
for (x=tx; x < tx+ox; x++) {
*row = 0xFF000000;
*row |= ((Uint32) *(p8++) << 16);
*row |= ((Uint32) *(p8++) << 8);
*row |= ((Uint32) *(p8++) << 0);
row++;
}
break;
case 2: // Indexed/Greyscale + Alpha
switch (head->image_type) {
case IMAGE_INDEXED:
for (x=tx; x < tx+ox; x++) {
*row = ((Uint32) (head->cm_map [*p8*3]) << 16);
*row |= ((Uint32) (head->cm_map [*p8*3+1]) << 8);
*row |= ((Uint32) (head->cm_map [*p8++*3+2]) << 0);
*row |= ((Uint32) *p8++ << 24);;
row++;
}
break;
case IMAGE_GREYSCALE:
for (x=tx; x < tx+ox; x++) {
*row = ((Uint32) *p8 << 16);
*row |= ((Uint32) *p8 << 8);
*row |= ((Uint32) *p8++ << 0);
*row |= ((Uint32) *p8++ << 24);;
row++;
}
break;
default:
fprintf (stderr, "Unknown Gimp image type (%d)\n", head->image_type);
if (hierarchy)
{
if (hierarchy->level_file_offsets)
SDL_free(hierarchy->level_file_offsets);
free_xcf_hierarchy(hierarchy);
}
if (level)
free_xcf_level (level);
return 1;
}
break;
case 1: // Indexed/Greyscale
switch (head->image_type) {
case IMAGE_INDEXED:
for (x = tx; x < tx+ox; x++) {
*row++ = 0xFF000000
| ((Uint32) (head->cm_map [*p8*3]) << 16)
| ((Uint32) (head->cm_map [*p8*3+1]) << 8)
| ((Uint32) (head->cm_map [*p8*3+2]) << 0);
p8++;
}
break;
case IMAGE_GREYSCALE:
for (x=tx; x < tx+ox; x++) {
*row++ = 0xFF000000
| (((Uint32) (*p8)) << 16)
| (((Uint32) (*p8)) << 8)
| (((Uint32) (*p8)) << 0);
++p8;
}
break;
default:
fprintf (stderr, "Unknown Gimp image type (%d)\n", head->image_type);
if (tile)
free_xcf_tile (tile);
if (level)
free_xcf_level (level);
if (hierarchy)
free_xcf_hierarchy (hierarchy);
return 1;
}
break;
}
}
tx += 64;
if (tx >= level->width) {
tx = 0;
ty += 64;
}
if (ty >= level->height) {
break;
}
free_xcf_tile (tile);
}
free_xcf_level (level);
}
free_xcf_hierarchy (hierarchy);
return 0;
}
SDL_Surface *IMG_LoadXCF_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *surface, *lays;
xcf_header * head;
xcf_layer * layer;
xcf_channel ** channel;
int chnls, i, offsets;
Sint64 offset, fp;
unsigned char * (* load_tile) (SDL_RWops *, Uint32, int, int, int);
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
/* Initialize the data we will clean up when we're done */
surface = NULL;
head = read_xcf_header (src);
switch (head->compr) {
case COMPR_NONE:
load_tile = load_xcf_tile_none;
break;
case COMPR_RLE:
load_tile = load_xcf_tile_rle;
break;
default:
fprintf (stderr, "Unsupported Compression.\n");
free_xcf_header (head);
return NULL;
}
/* Create the surface of the appropriate type */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
if ( surface == NULL ) {
error = "Out of memory";
goto done;
}
offsets = 0;
while ((offset = SDL_ReadBE32 (src))) {
head->layer_file_offsets = (Uint32 *) SDL_realloc (head->layer_file_offsets, sizeof (Uint32) * (offsets+1));
head->layer_file_offsets [offsets] = (Uint32)offset;
offsets++;
}
fp = SDL_RWtell (src);
lays = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
if ( lays == NULL ) {
error = "Out of memory";
goto done;
}
// Blit layers backwards, because Gimp saves them highest first
for (i = offsets; i > 0; i--) {
SDL_Rect rs, rd;
SDL_RWseek (src, head->layer_file_offsets [i-1], RW_SEEK_SET);
layer = read_xcf_layer (src);
do_layer_surface (lays, src, head, layer, load_tile);
rs.x = 0;
rs.y = 0;
rs.w = layer->width;
rs.h = layer->height;
rd.x = layer->offset_x;
rd.y = layer->offset_y;
rd.w = layer->width;
rd.h = layer->height;
if (layer->visible)
SDL_BlitSurface (lays, &rs, surface, &rd);
free_xcf_layer (layer);
}
SDL_FreeSurface (lays);
SDL_RWseek (src, fp, RW_SEEK_SET);
// read channels
channel = NULL;
chnls = 0;
while ((offset = SDL_ReadBE32 (src))) {
channel = (xcf_channel **) SDL_realloc (channel, sizeof (xcf_channel *) * (chnls+1));
fp = SDL_RWtell (src);
SDL_RWseek (src, offset, RW_SEEK_SET);
channel [chnls++] = (read_xcf_channel (src));
SDL_RWseek (src, fp, RW_SEEK_SET);
}
if (chnls) {
SDL_Surface * chs;
chs = SDL_CreateRGBSurface(SDL_SWSURFACE, head->width, head->height, 32,
0x00FF0000,0x0000FF00,0x000000FF,0xFF000000);
if (chs == NULL) {
error = "Out of memory";
goto done;
}
for (i = 0; i < chnls; i++) {
// printf ("CNLBLT %i\n", i);
if (!channel [i]->selection && channel [i]->visible) {
create_channel_surface (chs, (xcf_image_type)head->image_type, channel [i]->color, channel [i]->opacity);
SDL_BlitSurface (chs, NULL, surface, NULL);
}
free_xcf_channel (channel [i]);
}
SDL_FreeSurface (chs);
}
done:
free_xcf_header (head);
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return(surface);
}
#else
/* See if an image is contained in a data source */
int IMG_isXCF(SDL_RWops *src)
{
return(0);
}
/* Load a XCF type image from an SDL datasource */
SDL_Surface *IMG_LoadXCF_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XCF */
project/jni/sdl2_image/IMG_xpm.c
+1187
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File diff suppressed because it is too large Load Diff
project/jni/sdl2_image/IMG_xv.c
+165
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@@ -0,0 +1,165 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a XV thumbnail image file loading framework */
#include <stdio.h>
#include <string.h>
#include "SDL_image.h"
#ifdef LOAD_XV
static int get_line(SDL_RWops *src, char *line, int size)
{
while ( size > 0 ) {
if ( SDL_RWread(src, line, 1, 1) <= 0 ) {
return -1;
}
if ( *line == '\r' ) {
continue;
}
if ( *line == '\n' ) {
*line = '\0';
return 0;
}
++line;
--size;
}
/* Out of space for the line */
return -1;
}
static int get_header(SDL_RWops *src, int *w, int *h)
{
char line[1024];
*w = 0;
*h = 0;
/* Check the header magic */
if ( (get_line(src, line, sizeof(line)) < 0) ||
(SDL_memcmp(line, "P7 332", 6) != 0) ) {
return -1;
}
/* Read the header */
while ( get_line(src, line, sizeof(line)) == 0 ) {
if ( SDL_memcmp(line, "#BUILTIN:", 9) == 0 ) {
/* Builtin image, no data */
break;
}
if ( SDL_memcmp(line, "#END_OF_COMMENTS", 16) == 0 ) {
if ( get_line(src, line, sizeof(line)) == 0 ) {
SDL_sscanf(line, "%d %d", w, h);
if ( *w >= 0 && *h >= 0 ) {
return 0;
}
}
break;
}
}
/* No image data */
return -1;
}
/* See if an image is contained in a data source */
int IMG_isXV(SDL_RWops *src)
{
Sint64 start;
int is_XV;
int w, h;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XV = 0;
if ( get_header(src, &w, &h) == 0 ) {
is_XV = 1;
}
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XV);
}
/* Load a XV thumbnail image from an SDL datasource */
SDL_Surface *IMG_LoadXV_RW(SDL_RWops *src)
{
Sint64 start;
const char *error = NULL;
SDL_Surface *surface = NULL;
int w, h;
Uint8 *pixels;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
/* Read the header */
if ( get_header(src, &w, &h) < 0 ) {
error = "Unsupported image format";
goto done;
}
/* Create the 3-3-2 indexed palette surface */
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 8, 0xe0, 0x1c, 0x03, 0);
if ( surface == NULL ) {
error = "Out of memory";
goto done;
}
/* Load the image data */
for ( pixels = (Uint8 *)surface->pixels; h > 0; --h ) {
if ( SDL_RWread(src, pixels, w, 1) <= 0 ) {
error = "Couldn't read image data";
goto done;
}
pixels += surface->pitch;
}
done:
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return surface;
}
#else
/* See if an image is contained in a data source */
int IMG_isXV(SDL_RWops *src)
{
return(0);
}
/* Load a XXX type image from an SDL datasource */
SDL_Surface *IMG_LoadXV_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XV */
project/jni/sdl2_image/IMG_xxx.c
+87
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@@ -0,0 +1,87 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* This is a generic "format not supported" image framework */
#include <stdio.h>
#include "SDL_image.h"
#ifdef LOAD_XXX
/* See if an image is contained in a data source */
int IMG_isXXX(SDL_RWops *src)
{
int start;
int is_XXX;
if ( !src )
return 0;
start = SDL_RWtell(src);
is_XXX = 0;
/* Detect the image here */
SDL_RWseek(src, start, RW_SEEK_SET);
return(is_XXX);
}
/* Load a XXX type image from an SDL datasource */
SDL_Surface *IMG_LoadXXX_RW(SDL_RWops *src)
{
int start;
const char *error = NULL;
SDL_Surface *surface = NULL;
if ( !src ) {
/* The error message has been set in SDL_RWFromFile */
return NULL;
}
start = SDL_RWtell(src);
/* Load the image here */
if ( error ) {
SDL_RWseek(src, start, RW_SEEK_SET);
if ( surface ) {
SDL_FreeSurface(surface);
surface = NULL;
}
IMG_SetError(error);
}
return surface;
}
#else
/* See if an image is contained in a data source */
int IMG_isXXX(SDL_RWops *src)
{
return(0);
}
/* Load a XXX type image from an SDL datasource */
SDL_Surface *IMG_LoadXXX_RW(SDL_RWops *src)
{
return(NULL);
}
#endif /* LOAD_XXX */
project/jni/sdl2_image/README.txt
+40
View File
@@ -0,0 +1,40 @@
SDL_image 2.0
The latest version of this library is available from:
http://www.libsdl.org/projects/SDL_image/
This is a simple library to load images of various formats as SDL surfaces.
This library supports BMP, PNM (PPM/PGM/PBM), XPM, LBM, PCX, GIF, JPEG, PNG,
TGA, and TIFF formats.
API:
#include "SDL_image.h"
SDL_Surface *IMG_Load(const char *file);
or
SDL_Surface *IMG_Load_RW(SDL_RWops *src, int freesrc);
or
SDL_Surface *IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, char *type);
where type is a string specifying the format (i.e. "PNG" or "pcx").
Note that IMG_Load_RW cannot load TGA images.
To create a surface from an XPM image included in C source, use:
SDL_Surface *IMG_ReadXPMFromArray(char **xpm);
An example program 'showimage' is included, with source in showimage.c
JPEG support requires the JPEG library: http://www.ijg.org/
PNG support requires the PNG library: http://www.libpng.org/pub/png/libpng.html
and the Zlib library: http://www.gzip.org/zlib/
TIFF support requires the TIFF library: ftp://ftp.sgi.com/graphics/tiff/
If you have these libraries installed in non-standard places, you can
try adding those paths to the configure script, e.g.
sh ./configure CPPFLAGS="-I/somewhere/include" LDFLAGS="-L/somewhere/lib"
If this works, you may need to add /somewhere/lib to your LD_LIBRARY_PATH
so shared library loading works correctly.
This library is under the zlib License, see the file "COPYING.txt" for details.
project/jni/sdl2_image/include/SDL
Symlink
+1
View File
@@ -0,0 +1 @@
.
project/jni/sdl2_image/include/SDL_image.h
+145
View File
@@ -0,0 +1,145 @@
/*
SDL_image: An example image loading library for use with SDL
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/* A simple library to load images of various formats as SDL surfaces */
#ifndef _SDL_IMAGE_H
#define _SDL_IMAGE_H
#include "SDL.h"
#include "SDL_version.h"
#include "begin_code.h"
/* Set up for C function definitions, even when using C++ */
#ifdef __cplusplus
extern "C" {
#endif
/* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL
*/
#define SDL_IMAGE_MAJOR_VERSION 2
#define SDL_IMAGE_MINOR_VERSION 0
#define SDL_IMAGE_PATCHLEVEL 0
/* This macro can be used to fill a version structure with the compile-time
* version of the SDL_image library.
*/
#define SDL_IMAGE_VERSION(X) \
{ \
(X)->major = SDL_IMAGE_MAJOR_VERSION; \
(X)->minor = SDL_IMAGE_MINOR_VERSION; \
(X)->patch = SDL_IMAGE_PATCHLEVEL; \
}
/* This function gets the version of the dynamically linked SDL_image library.
it should NOT be used to fill a version structure, instead you should
use the SDL_IMAGE_VERSION() macro.
*/
extern DECLSPEC const SDL_version * SDLCALL IMG_Linked_Version(void);
typedef enum
{
IMG_INIT_JPG = 0x00000001,
IMG_INIT_PNG = 0x00000002,
IMG_INIT_TIF = 0x00000004,
IMG_INIT_WEBP = 0x00000008
} IMG_InitFlags;
/* Loads dynamic libraries and prepares them for use. Flags should be
one or more flags from IMG_InitFlags OR'd together.
It returns the flags successfully initialized, or 0 on failure.
*/
extern DECLSPEC int SDLCALL IMG_Init(int flags);
/* Unloads libraries loaded with IMG_Init */
extern DECLSPEC void SDLCALL IMG_Quit(void);
/* Load an image from an SDL data source.
The 'type' may be one of: "BMP", "GIF", "PNG", etc.
If the image format supports a transparent pixel, SDL will set the
colorkey for the surface. You can enable RLE acceleration on the
surface afterwards by calling:
SDL_SetColorKey(image, SDL_RLEACCEL, image->format->colorkey);
*/
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTyped_RW(SDL_RWops *src, int freesrc, const char *type);
/* Convenience functions */
extern DECLSPEC SDL_Surface * SDLCALL IMG_Load(const char *file);
extern DECLSPEC SDL_Surface * SDLCALL IMG_Load_RW(SDL_RWops *src, int freesrc);
#if SDL_VERSION_ATLEAST(2,0,0)
/* Load an image directly into a render texture.
*/
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTexture(SDL_Renderer *renderer, const char *file);
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTexture_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc);
extern DECLSPEC SDL_Texture * SDLCALL IMG_LoadTextureTyped_RW(SDL_Renderer *renderer, SDL_RWops *src, int freesrc, const char *type);
#endif /* SDL 2.0 */
/* Functions to detect a file type, given a seekable source */
extern DECLSPEC int SDLCALL IMG_isICO(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isCUR(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isBMP(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isGIF(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isJPG(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isLBM(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isPCX(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isPNG(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isPNM(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isTIF(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isXCF(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isXPM(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isXV(SDL_RWops *src);
extern DECLSPEC int SDLCALL IMG_isWEBP(SDL_RWops *src);
/* Individual loading functions */
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadICO_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadCUR_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadBMP_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadGIF_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadJPG_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadLBM_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPCX_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPNG_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadPNM_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTGA_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadTIF_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXCF_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXPM_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadXV_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_LoadWEBP_RW(SDL_RWops *src);
extern DECLSPEC SDL_Surface * SDLCALL IMG_ReadXPMFromArray(char **xpm);
/* Individual saving functions */
extern DECLSPEC int SDLCALL IMG_SavePNG(SDL_Surface *surface, const char *file);
extern DECLSPEC int SDLCALL IMG_SavePNG_RW(SDL_Surface *surface, SDL_RWops *dst, int freedst);
/* We'll use SDL for reporting errors */
#define IMG_SetError SDL_SetError
#define IMG_GetError SDL_GetError
/* Ends C function definitions when using C++ */
#ifdef __cplusplus
}
#endif
#include "close_code.h"
#endif /* _SDL_IMAGE_H */
project/jni/sdl2_image/include/miniz.h
+4771
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project/jni/sdl2_image/showimage.c
+175
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@@ -0,0 +1,175 @@
/*
showimage: A test application for the SDL image loading library.
Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL.h"
#include "SDL_image.h"
/* Draw a Gimpish background pattern to show transparency in the image */
static void draw_background(SDL_Renderer *renderer, int w, int h)
{
SDL_Color col[2] = {
{ 0x66, 0x66, 0x66, 0xff },
{ 0x99, 0x99, 0x99, 0xff },
};
int i, x, y;
SDL_Rect rect;
rect.w = 8;
rect.h = 8;
for (y = 0; y < h; y += rect.h) {
for (x = 0; x < w; x += rect.w) {
/* use an 8x8 checkerboard pattern */
i = (((x ^ y) >> 3) & 1);
SDL_SetRenderDrawColor(renderer, col[i].r, col[i].g, col[i].b, col[i].a);
rect.x = x;
rect.y = y;
SDL_RenderFillRect(renderer, &rect);
}
}
}
int main(int argc, char *argv[])
{
SDL_Window *window;
SDL_Renderer *renderer;
SDL_Texture *texture;
Uint32 flags;
int i, w, h, done;
SDL_Event event;
const char *saveFile = NULL;
/* Check command line usage */
if ( ! argv[1] ) {
fprintf(stderr, "Usage: %s [-fullscreen] [-save file.png] <image_file> ...\n", argv[0]);
return(1);
}
flags = SDL_WINDOW_HIDDEN;
for ( i=1; argv[i]; ++i ) {
if ( strcmp(argv[i], "-fullscreen") == 0 ) {
SDL_ShowCursor(0);
flags |= SDL_WINDOW_FULLSCREEN;
}
}
if (SDL_CreateWindowAndRenderer(0, 0, flags, &window, &renderer) < 0) {
fprintf(stderr, "SDL_CreateWindowAndRenderer() failed: %s\n", SDL_GetError());
return(2);
}
for ( i=1; argv[i]; ++i ) {
if ( strcmp(argv[i], "-fullscreen") == 0 ) {
continue;
}
if ( strcmp(argv[i], "-save") == 0 && argv[i+1] ) {
++i;
saveFile = argv[i];
continue;
}
/* Open the image file */
texture = IMG_LoadTexture(renderer, argv[i]);
if (!texture) {
fprintf(stderr, "Couldn't load %s: %s\n", argv[i], SDL_GetError());
continue;
}
SDL_QueryTexture(texture, NULL, NULL, &w, &h);
/* Save the image file, if desired */
if ( saveFile ) {
SDL_Surface *surface = IMG_Load(argv[i]);
if (surface) {
if ( IMG_SavePNG(surface, saveFile) < 0 ) {
fprintf(stderr, "Couldn't save %s: %s\n", saveFile, SDL_GetError());
}
} else {
fprintf(stderr, "Couldn't load %s: %s\n", argv[i], SDL_GetError());
}
}
/* Show the window */
SDL_SetWindowTitle(window, argv[i]);
SDL_SetWindowSize(window, w, h);
SDL_ShowWindow(window);
done = 0;
while ( ! done ) {
while ( SDL_PollEvent(&event) ) {
switch (event.type) {
case SDL_KEYUP:
switch (event.key.keysym.sym) {
case SDLK_LEFT:
if ( i > 1 ) {
i -= 2;
done = 1;
}
break;
case SDLK_RIGHT:
if ( argv[i+1] ) {
done = 1;
}
break;
case SDLK_ESCAPE:
case SDLK_q:
argv[i+1] = NULL;
/* Drop through to done */
case SDLK_SPACE:
case SDLK_TAB:
done = 1;
break;
default:
break;
}
break;
case SDL_MOUSEBUTTONDOWN:
done = 1;
break;
case SDL_QUIT:
argv[i+1] = NULL;
done = 1;
break;
default:
break;
}
}
/* Draw a background pattern in case the image has transparency */
draw_background(renderer, w, h);
/* Display the image */
SDL_RenderCopy(renderer, texture, NULL, NULL);
SDL_RenderPresent(renderer);
SDL_Delay(100);
}
SDL_DestroyTexture(texture);
}
/* We're done! */
SDL_Quit();
return(0);
}