simplify code so it always returns the same object

[wxWidgets.git] / src / png / TODO

diff --git a/src/png/TODO b/src/png/TODO
index 0af8d827a46f07de594fadb12c35339aa6f2fd87..6e1f028bd75324243c566ecea3286c6c79a1583b 100644 (file)
--- a/src/png/TODO
+++ b/src/png/TODO
@@ -2,14 +2,12 @@
 TODO - list of things to do for libpng:
 
 Final bug fixes.
 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.
 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.
+Remove setjmp/longjmp usage in favor of returning error codes.

 Add "grayscale->palette" transformation and "palette->grayscale" detection.
 Add "grayscale->palette" transformation and "palette->grayscale" detection.

-Improved quantizing and dithering.
+Improved dithering.

 Multi-lingual error and warning message support.
 Complete sRGB transformation (presently it simply uses gamma=0.45455).
 Man pages for function calls.
 Multi-lingual error and warning message support.
 Complete sRGB transformation (presently it simply uses gamma=0.45455).
 Man pages for function calls.


@@ -18,14 +16,12 @@ Better filter selection
    (counting huffman bits/precompression?  filter inertia?  filter costs?).
 Histogram creation.
 Text conversion between different code pages (Latin-1 -> Mac and DOS).
    (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.
 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.
 Switch to the simpler zlib (zlib/libpng) license if legally possible.

+Extend pngvalid.c to validate more of the libpng transformations.

 
 */
 
 */