[wxWidgets.git] / src / png / TODO

/*
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.
Add "grayscale->palette" transformation and "palette->grayscale" detection.
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.
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).
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.

*/
Commit	Line	Data
b61cc19c	1	/*
0272a10d VZ	2	TODO - list of things to do for libpng:
	3
	4	Final bug fixes.
	5	Improve API by hiding the png_struct and png_info structs.
	6	Finish work on the no-floating-point version (including gamma compensation)
	7	Better C++ wrapper/full C++ implementation?
	8	Fix problem with C++ and EXTERN "C".
	9	cHRM transformation.
	10	Improve setjmp/longjmp usage or remove it in favor of returning error codes.
	11	Add "grayscale->palette" transformation and "palette->grayscale" detection.
b61cc19c	12	Improved quantizing and dithering.
0272a10d VZ	13	Multi-lingual error and warning message support.
	14	Complete sRGB transformation (presently it simply uses gamma=0.45455).
	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).
0272a10d	21	Build gamma tables using fixed point (and do away with floating point entirely).
b61cc19c	22	Avoid building gamma tables whenever possible.
0272a10d VZ	23	Use greater precision when changing to linear gamma for compositing against
	24	background and doing rgb-to-gray transformation.
	25	Investigate pre-incremented loop counters and other loop constructions.
b61cc19c PC	26	Add interpolated method of handling interlacing.
	27	Provide for conditional compilation of 16-bit support (except for the
	28	initial stripping down to 8-bits when reading a 16-bit PNG datastream).
	29	Switch to the simpler zlib (zlib/libpng) license if legally possible.
	30
	31	*/