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      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 Palette creation.
     10 Add "grayscale->palette" transformation and "palette->grayscale" detection.
     11 Improved dithering.
     12 Multi-lingual error and warning message support.
     13 Complete sRGB transformation (presently it simply uses gamma=0.45455).
     14 Make profile checking optional via a png_set_something() call.
     15 Man pages for function calls.
     16 Better documentation.
     17 Better filter selection
     18    (counting huffman bits/precompression?  filter inertia?  filter costs?).
     19 Histogram creation.
     20 Text conversion between different code pages (Latin-1 -> Mac and DOS).
     21 Avoid building gamma tables whenever possible.
     22 Use greater precision when changing to linear gamma for compositing against
     23   background and doing rgb-to-gray transformation.
     24 Investigate pre-incremented loop counters and other loop constructions.
     25 Add interpolated method of handling interlacing.
     26 Switch to the simpler zlib (zlib/libpng) license if legally possible.
     27 Extend pngvalid.c to validate more of the libpng transformations.
     28 
     29 */
     30