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| Libpng 1.0.1b May 2, 1998 |
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| This is not intended to be a public release. It will be replaced |
| within a few weeks by a public version or by another test version. |
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| Changes since the last public release: |
| |
| libpng-1.0.1a: |
| Optimized Paeth calculations by replacing abs() function calls with intrinsics |
| plus other loop optimizations. Improves avg decoding speed by about 20 percent. |
| Commented out i386istic "align" compiler flags in makefile.lnx. |
| Reduced the default warning level in some makefiles, to make them consistent. |
| Removed references to IJG and JPEG in the ansi2knr.c copyright statement. |
| Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation. |
| Added grayscale and 16-bit capability to png_do_read_filler(). |
| Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes |
| too large when writing an image with bit_depth < 8 (Bob Dellaca). |
| Corrected some bugs in the experimental weighted filtering heuristics. |
| Moved a misplaced pngrutil code block that truncates tRNS if it has more |
| than num_palette entries -- test was done before num_palette was defined. |
| Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins). |
| libpng-1.0.1b: |
| Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg). |
| Relocated the png_composite macros from pngrtran.c to png.h (Greg). |
| Added makefile.sco (contributed by Mike Hopkirk). |
| Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a. |
| Fixed a bug in pngrtran.c that would set channels=5 under some circumstances. |
| More work on the Paeth-filtering, achieving imperceptible speedup (A Kleinert). |
| More work on loop optimization which may help when compiled with C++ compilers. |
| Added warnings when people try to use transforms they've defined out. |
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| Send comments/corrections/commendations to |
| png-implement@dworkin.wustl.edu or to randeg@alumni.rpi.edu |
| |
| Glenn R-P |
