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446 Commits

Author SHA1 Message Date
John Bowler
84dc479108 [libpng15] De-configured build fixes to make a range of deconfiguration options 
(such as switching off read or write support) work in more cases.  Also
upgraded pngtest and pngvalid to the libpng 1.6 versions (with some
modifications) which provide more extensive testing.  Replaced pngtest.png
because pngtest writes the ancillary chunks in a different order.
 2013-01-06 12:38:39 -06:00
Glenn Randers-Pehrson
c11abedafe [libpng15] Update copyright year to 2013 in newly-changed files. 2013-01-01 07:26:47 -06:00
Glenn Randers-Pehrson
58514a2eba [libpng15] Updated "last changed" comments in recently-changed files. 2012-12-10 09:15:28 -06:00
Glenn Randers-Pehrson
494a0040f4 [libpng15] Use "FALL THROUGH" comments consistently (all caps) 2012-12-09 20:39:31 -06:00
Glenn Randers-Pehrson
7c699f27fc [libpng15] Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() 
in pngrtran.c (Domani Hannes).
 2012-10-24 11:10:49 -05:00
Glenn Randers-Pehrson
95ea04f925 [libpng15] Folded some long lines; updated manual about removed macros 2012-08-16 00:56:45 -05:00
Glenn Randers-Pehrson
e088ce7363 [libpng15] Imported from libpng-1.5.11.tar 2012-06-14 06:33:45 -05:00
Glenn Randers-Pehrson
b705271d85 [libpng15] Updated some "Last changed" dates 2012-06-06 13:10:40 -05:00
Glenn Randers-Pehrson
c924d3dd25 [libpng15] Improved the efficiency of the new png_check_palette_indexes() 
function.
 2012-06-06 13:04:47 -05:00
Glenn Randers-Pehrson
38a706f83f [libpng15] Imported from libpng-1.5.10.tar 2012-03-29 06:33:41 -05:00
Glenn Randers-Pehrson
454e05a63a [libpng15] Added palette-index checking. 2012-03-04 22:30:06 -06:00
Glenn Randers-Pehrson
cd3f5bb507 [libpng15] Imported from libpng-1.5.7.tar 2011-12-15 09:50:23 -06:00
Glenn Randers-Pehrson
0222124801 [libpng15] Replaced an "#if" with "ifdef" in pngrtran.c 2011-11-28 10:31:42 -06:00
John Bowler
18c5cfafeb [libpng15] Multiple transform bug fixes plus a work-round for double gamma 
correction.
 2011-11-16 14:26:34 -06:00
Glenn Randers-Pehrson
4be12aa1e3 [libpng15] Updated commentary 2011-11-10 06:35:48 -06:00
Glenn Randers-Pehrson
efc4b69767 [libpng15] Fixed some typos in comments. 2011-11-07 23:31:34 -06:00
John Bowler
7875d534cb [libpng15] Simplified read/write API initial version; basic read/write tested 
on a variety of images, limited documentation (in the header file.)
 2011-11-07 22:33:49 -06:00
Glenn Randers-Pehrson
55e85c24b4 [libpng15] Imported from libpng-1.5.7beta01.tar 2011-11-04 13:47:49 -05:00
Glenn Randers-Pehrson
2b7d730e27 [libpng15] Bump version to libpng-1.5.7beta01 2011-11-02 23:14:13 -05:00
Glenn Randers-Pehrson
bc6726bc04 [libpng15] Imported from libpng-1.5.6.tar 2011-11-02 22:48:36 -05:00
John Bowler
92ef313c77 [libpng15] Fixed compiler warnings with Intel and MSYS compilers. 
The logical shift fix for Microsoft Visual C is required by other compilers,
so this enables that fix for all compilers when using compile-time constants.
Under MSYS 'byte' is a name declared in a system header file, so we
changed the name of a local variable to avoid the warnings that result.
 2011-10-27 19:53:14 -05:00
John Bowler
07772cba07 [libpng15] Fixes for multiple calls to png_read_update_info. 
These fixes attend to most of the errors revealed in pngvalid, however doing
the gamma work twice results in inaccuracies that can't be easily fixed.
There is now a warning in the code if this is going to happen.
 2011-10-14 18:19:47 -05:00
Glenn Randers-Pehrson
bb5cb1476b [libpng15] Bump version to libpng-1.5.6beta02 2011-09-22 12:48:19 -05:00
Glenn Randers-Pehrson
115020d985 [libpng15] Imported from libpng-1.5.6beta01.tar 2011-09-22 09:51:23 -05:00
Glenn Randers-Pehrson
3e2263abf2 [libpng15] Imported from libpng-1.5.5.tar 2011-09-22 08:45:04 -05:00
John Bowler
751561218f [libpng15] Constant changes for 64-bit compatibility (removal of L suffixes). 
The 16-bit cases still use "L" as we don't have a 16-bit test system.
 2011-09-09 17:21:44 -05:00
Glenn Randers-Pehrson
63071acbd9 [devel] Zapped "zap" (changed "zap" to "remove") 2011-08-29 16:16:26 -05:00
Glenn Randers-Pehrson
8b8aacde83 [devel] Use "color" spelling consistently. 2011-08-25 18:10:50 -05:00
John Bowler
736f40f459 [devel] Fixes to rgb_to_gray and cHRM XYZ APIs 2011-08-25 16:19:44 -05:00
Glenn Randers-Pehrson
75d5bfda5b [devel] Imported from libpng-1.5.5beta05.tar 2011-08-17 07:47:04 -05:00
Glenn Randers-Pehrson
0bc79772c8 [devel] Revised commentary about png_rgb_to_gray coefficents 
and fixed spelling (truely -> truly) in comments.
 2011-08-11 15:11:11 -05:00
Glenn Randers-Pehrson
99ffac0838 [devel] Imported from libpng-1.5.5beta04.tar 2011-07-29 12:35:41 -05:00
Glenn Randers-Pehrson
d404b6d488 [devel] Imported from libpng-1.5.4.tar 2011-07-07 06:26:30 -05:00
John Bowler
8d261262d9 [devel] Fixed pngvalid, simplified macros, added checking for 0 in sCAL. 2011-06-18 13:37:11 -05:00
Glenn Randers-Pehrson
aee83b43d6 [devel] Fixed buffer bug (both the strip_16 and scale_16 transforms were 
being applied.
 2011-06-18 00:19:54 -05:00
Glenn Randers-Pehrson
24145c8869 [devel] Still trying to fix row buffer problem but pngvalid still fails 2011-06-17 22:45:03 -05:00
Glenn Randers-Pehrson
e6a8060a71 [devel] Fixed some errors with 16_TO_8 macros 
pngvalid still fails two tests, problem with row buffer.
 2011-06-17 22:28:23 -05:00
Glenn Randers-Pehrson
ab63dd0892 [devel] Renamed png_set_chop_16() to png_set_strip_16(). 2011-06-17 20:41:19 -05:00
Glenn Randers-Pehrson
a7428d443c [devel] Renamed png_set_strip_16() to png_set_scale_16(). 2011-06-17 19:07:04 -05:00
Glenn Randers-Pehrson
5f0b9276ec [devel] Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. 
If this is not enabled, png_set_strip_16() and png_do_scale_16_to_8()
aren't built.
 2011-06-16 09:05:40 -05:00
Glenn Randers-Pehrson
ef217b76a3 [devel] Updated comments that mention 1.5.3; changed them to 1.5.4. 2011-06-15 12:58:27 -05:00
Glenn Randers-Pehrson
903c64dce8 [devel] Added "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c 2011-06-15 11:50:23 -05:00
Glenn Randers-Pehrson
be720edba7 [devel] Correction to the expand_16 code; removed extra instance of 
png_set_scale_16_to_8 from pngpriv.h
 2011-06-15 08:20:37 -05:00
John Bowler
cd3b0cc4d9 [devel] Fixed a problem in png_do_expand_palette() exposed by optimization in 
1.5.3beta06
  Also removed a spurious (totally unused and confusing) member from png_info.
  The palette expand optimization prevented expansion to an intermediate RGBA
    form if tRNS was present but alpha was marked to be stripped; this exposed
    a check for tRNS in png_do_expand_palette() which is inconsistent with the
    code elsewhere in libpng.
 2011-06-14 23:01:07 -05:00
Glenn Randers-Pehrson
2232baa41b [devel] Made png_set_chop_16() API removeable 
by disabling PNG_CHOP_16_TO_8_SUPPORTED
 2011-06-14 06:59:46 -05:00
Glenn Randers-Pehrson
7dffa41643 [devel] Use the old scaling method for background if png_set_chop_16() was 
called.
 2011-06-14 06:30:12 -05:00
John Bowler
550bab03fb [devel] Removed the ACCURATE and LEGACY options (they are no longer useable) 
Fixed some compiliation problems with scaling options.
 2011-06-14 06:17:26 -05:00
Glenn Randers-Pehrson
413138a5ca [devel] Added png_set_chop_16() API. 2011-06-13 22:07:37 -05:00
John Bowler
74945f2f04 [devel] Fix and clarify LEGACY 16-to-8 scaling. 2011-06-13 20:50:42 -05:00
Glenn Randers-Pehrson
141d9e3c20 [devel] Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED 
to get the same (inaccurate) output as libpng-1.5.2 and earlier.
 2011-06-13 11:47:00 -05:00