src/png/TODO

   1 /*
   2 TODO - list of things to do for libpng:
   3
   4 Final bug fixes.
   5 Better C++ wrapper/full C++ implementation?
   6 Fix problem with C++ and EXTERN "C".
   7 cHRM transformation.
   8 Remove setjmp/longjmp usage in favor of returning error codes.
   9 Add "grayscale->palette" transformation and "palette->grayscale" detection.
  10 Improved dithering.
  11 Multi-lingual error and warning message support.
  12 Complete sRGB transformation (presently it simply uses gamma=0.45455).
  13 Man pages for function calls.
  14 Better documentation.
  15 Better filter selection
  16    (counting huffman bits/precompression?  filter inertia?  filter costs?).
  17 Histogram creation.
  18 Text conversion between different code pages (Latin-1 -> Mac and DOS).
  19 Avoid building gamma tables whenever possible.
  20 Use greater precision when changing to linear gamma for compositing against
  21   background and doing rgb-to-gray transformation.
  22 Investigate pre-incremented loop counters and other loop constructions.
  23 Add interpolated method of handling interlacing.
  24 Switch to the simpler zlib (zlib/libpng) license if legally possible.
  25 Extend pngvalid.c to validate more of the libpng transformations.
  26
  27 */