[wxWidgets.git] / src / png / TODO

/*
TODO - list of things to do for libpng:

Final bug fixes.
Better C++ wrapper/full C++ implementation?
Fix problem with C++ and EXTERN "C".
cHRM transformation.
Remove setjmp/longjmp usage in favor of returning error codes.
Add "grayscale->palette" transformation and "palette->grayscale" detection.
Improved dithering.
Multi-lingual error and warning message support.
Complete sRGB transformation (presently it simply uses gamma=0.45455).
Man pages for function calls.
Better documentation.
Better filter selection
   (counting huffman bits/precompression?  filter inertia?  filter costs?).
Histogram creation.
Text conversion between different code pages (Latin-1 -> Mac and DOS).
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.
Switch to the simpler zlib (zlib/libpng) license if legally possible.
Extend pngvalid.c to validate more of the libpng transformations.

*/
Commit	Line	Data
b61cc19c	1	/*
0272a10d VZ	2	TODO - list of things to do for libpng:
	3
	4	Final bug fixes.
0272a10d VZ	5	Better C++ wrapper/full C++ implementation?
	6	Fix problem with C++ and EXTERN "C".
	7	cHRM transformation.
9c0d9ce3	8	Remove setjmp/longjmp usage in favor of returning error codes.
0272a10d	9	Add "grayscale->palette" transformation and "palette->grayscale" detection.
9c0d9ce3	10	Improved dithering.
0272a10d VZ	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).
b61cc19c	19	Avoid building gamma tables whenever possible.
0272a10d VZ	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.
b61cc19c	23	Add interpolated method of handling interlacing.
b61cc19c	24	Switch to the simpler zlib (zlib/libpng) license if legally possible.
9c0d9ce3	25	Extend pngvalid.c to validate more of the libpng transformations.
b61cc19c PC	26
b61cc19c PC	27	*/