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Imported from libpng-1.0.8.tar

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Glenn Randers-Pehrson
2000-07-24 06:34:14 -05:00
parent 4766a244b2
commit 32fc5ceb91
44 changed files with 135 additions and 149 deletions
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63
KNOWNBUG
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@@ -1,62 +1,15 @@
Known bugs and suggested enhancements in libpng-1.0.7
Known bugs and suggested enhancements in libpng-1.0.8
1. July 2, 2000 -- BUG -- pnggccrd.c
Some programs compiled with PNG_USE_PNGGCCRD crash in pnggccrd.c.
Also, pnggccrd.c will not compile under gcc-2.95-2.
STATUS: Under investigation. Experts on MMX assembler code are
invited to help with the debugging. Note that pngvcrd.c works fine.
Update: fixed in libpng-1.0.8beta1. It compiles under gcc-2.7.2.3
and seems to work; under gcc-2.7.2.1 it compiles but crashes in
execution. It is recommended that people use 2.95.2 or later.
The png_read_filter() function has still not been fully converted and
will not compile under gcc-2.95.2; it is currently ifdef'ed out.
2. July 3, 2000 -- BUG -- MEMORY LEAK
STATUS: Under investigation. Experts on MMX assembler code are
invited to help with the debugging. Note that pngvcrd.c works fine.
There is a memory leak in pngpread.c; it doesn't free "key".
STATUS: Fixed in libpng-1.0.8beta1, by adding.
png_free(png_ptr, text_ptr);
after lines 1221 and 1038 in pngpread.c
3. July 3, 2000 -- BUG -- PNG_EXPORT_VAR
The definition of PNG_EXPORT_VAR, in pngconf.h, should be
# define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
STATUS: Fixed in libpng-1.0.8beta1.
4. July 3, 2000 -- BUG -- PNG_NO_STDIO
Several places in pngrutil.c and pngwutil.c, there are printf statements
inside PNG_NO_STDIO blocks (should be PNG_NO_CONSOLE_IO)
STATUS: Fixed in libpng-1.0.8beta1.
5. July 3, 2000 -- ENHANCEMENT -- WindowsCE support
Libpng-1.0.7 does not support WindowsCE.
STATUS: Libpng-1.0.8 and libpng-2.0.0 will support WindowsCE. A
new typedef, png_FILE_p, will be added which is normally FILE * but
will be HANDLE if libpng is being built for WindowsCE. Other patches
required for WindowsCE support have been provided and will be applied.
Finished in libpng-1.0.8beta3.
6. July 13, 2000 -- ENHANCEMENT -- Cygwin support
Libpng-1.0.7 does not support building DLLs under Cygwin
STATUS: Cygwin support has been added to libpng-1.0.8beta4.
7. March 15, 1998 -- OPTIMIZATION -- Kevin Bracey
2. March 15, 1998 -- OPTIMIZATION -- Kevin Bracey
Loops need to be optimized everywhere
@@ -68,10 +21,10 @@ Known bugs and suggested enhancements in libpng-1.0.7
Question whether i-- or --i is better.
STATUS: Under investigation, postponed until after
libpng-1.1.0. About 160 loops will be turned around
libpng-2.0.0. About 160 loops will be turned around
in libpng-2.0.x betaxx, for testing.
8. July 4, 1998 -- ENHANCEMENT -- Glenn R-P
3. July 4, 1998 -- ENHANCEMENT -- Glenn R-P
libpng-1.0.5 and earlier transform colors to gamma=1.0 space for
merging with background, and then back to the image's gamma. The
@@ -83,12 +36,12 @@ Known bugs and suggested enhancements in libpng-1.0.7
STATUS: under development.
9. September 1999 -- ENHANCEMENT --
4. September 1999 -- ENHANCEMENT --
It should be possible to use libpng without floating-point aritmetic.
STATUS: Under investigation, implementation postponed until after
libpng-1.0.7.
libpng-2.0.0.
Much of this was completed in libpng-1.0.6, but gamma compensation
is not yet done in fixed-point arithmetic.