Updated libpng

project/jni/png/TODO

@@ -1,3 +1,4 @@
+/*
 TODO - list of things to do for libpng:
 
 Final bug fixes.
@@ -8,7 +9,7 @@ Fix problem with C++ and EXTERN "C".
 cHRM transformation.
 Improve setjmp/longjmp usage or remove it in favor of returning error codes.
 Add "grayscale->palette" transformation and "palette->grayscale" detection.
-Improved dithering.
+Improved quantizing and dithering.
 Multi-lingual error and warning message support.
 Complete sRGB transformation (presently it simply uses gamma=0.45455).
 Man pages for function calls.
@@ -17,9 +18,14 @@ Better filter selection
    (counting huffman bits/precompression?  filter inertia?  filter costs?).
 Histogram creation.
 Text conversion between different code pages (Latin-1 -> Mac and DOS).
-Should we always malloc 2^bit_depth PLTE/tRNS/hIST entries for safety?
 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.
+
+*/