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59a6c379dd
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786 Commits

Author SHA1 Message Date
John Bowler
59a6c379dd [devel] Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. 
This allows pngvalid to build when ALPHA_MODE is not supported, which is
required if it is to build on libpng 1.4.
 2011-06-11 06:51:06 -05:00
John Bowler
d2f0bc2d13 [devel] Improved gamma range checks and other things OpenWatcom warns about. 2011-06-11 06:42:06 -05:00
John Bowler
0eadc27cd6 [devel] Added projects/owatcom, an IDE project for OpenWatcom to replace 
scripts/makefile.watcom.  This project works with OpenWatcom 1.9. The
    IDE autogenerates appropriate makefiles (libpng.mk) for batch processing.
    The project is configurable, unlike the Visual Studio project, so long
    as the developer has an awk.
 2011-06-11 06:31:28 -05:00
Glenn Randers-Pehrson
700c55036c [devel] Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro. 2011-06-10 23:26:03 -05:00
John Bowler
b2bee3374c [devel] Make the 16-to-8 scaling accurate. Dividing by 256 with no rounding is 
wrong (high by one) 25% of the time. Dividing by 257 with rounding is
    wrong in 128 out of 65536 cases. Getting the right answer all the time
    without division is easy.
 2011-06-10 23:24:58 -05:00
Glenn Randers-Pehrson
cc2770850a [devel] Revised documentation about png_set_user_limits() to say that it can 
only be used to reduce the defined limit, and that it also affects
png writing.
 2011-06-10 21:17:34 -05:00
Glenn Randers-Pehrson
fb27873021 [devel] Bump version to libpng-1.5.3beta11 2011-06-10 20:46:53 -05:00
Glenn Randers-Pehrson
254a513fd1 [devel] Fixed png_handle_sCAL which is broken in 1.5 2011-06-10 17:45:48 -05:00
Glenn Randers-Pehrson
ab1a573768 [devel] Imported from libpng-1.5.3rc03.tar 2011-06-07 19:56:51 -05:00
Glenn Randers-Pehrson
07e1d34a84 [devel] Fixed 1-byte uninitialized memory reference in png_format_buffer() 
(Bug report by Frank Busse, related to CVE-2004-0421).
 2011-06-07 14:35:30 -05:00
Glenn Randers-Pehrson
36edbb5eee [devel] Imported from libpng-1.5.3rc01.tar 2011-06-03 07:18:14 -05:00
Glenn Randers-Pehrson
0640cc3d3a [devel] Bump to version libpng-1.5.3beta11 2011-05-20 09:31:08 -05:00
Glenn Randers-Pehrson
3f68453d4a [devel] Imported from libpng-1.5.3beta10.tar 2011-05-20 09:30:08 -05:00
Glenn Randers-Pehrson
0a048923ae [devel] Update CHANGES and ANNOUNCE 2011-05-18 21:44:37 -05:00
Glenn Randers-Pehrson
66e1b3abba [devel] Bump to version libpng-1.5.3beta10 2011-05-17 07:03:21 -05:00
Glenn Randers-Pehrson
c261077788 [devel] Consistently use "n-bit", not "n bit" in CHANGES and ANNOUNCE. 2011-05-17 06:52:54 -05:00
John Bowler
1921e6db90 [devel] Reversed earlier change of transformation order; move 
png_expand_16 back where it was before libpng-1.5.3beta07.
The change doesn't work because it requires 16 bit gamma tables when the code
only generates 8 bit ones.  This fails silently; the libpng code just doesn't
do any gamma correction.  Moving the tests back leaves the old, inaccurate, 8
bit gamma calculations, but these are clearly better than none!
 2011-05-16 20:57:54 -05:00
Glenn Randers-Pehrson
bb4f77cd95 [devel] Bump to version libpng-1.5.3beta09 2011-05-16 20:42:11 -05:00
Glenn Randers-Pehrson
5ca62c9f35 [devel] Bump to version libpng-1.5.3rc01 2011-05-16 09:14:42 -05:00
Glenn Randers-Pehrson
1591a4c9dc [devel] Imported from libpng-1.5.3beta08.tar 2011-05-16 09:10:37 -05:00
Glenn Randers-Pehrson
0e128dfa2f [devel] Update CHANGES and ANNOUNCE; fix some new typos in comments. 2011-05-15 19:09:24 -05:00
John Bowler
cb0b29631f [devel] Documented png_set_alpha_mode(), other changes in libpng.3 and 
libpng-manual.txt.
  The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
    parameters are supplied by the caller), while in the absence of cHRM
    sRGB/Rec 709 values are still used.
  The bKGD chunk no longer overwrites the background value set by
    png_set_background(), allowing the latter to be used before the file
    header is read. It never performed any useful function to override
    the default anyway.

Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
(subscription required; visit
 2011-05-12 21:48:29 -05:00
John Bowler
ed4d32baa4 [devel] Improve "pngvalid --speed" to exclude more of pngvalid from the time. 2011-05-11 23:02:28 -05:00
Glenn Randers-Pehrson
d83530f45d [devel] Bump to version libpng-1.5.3beta08 2011-05-11 14:39:11 -05:00
Glenn Randers-Pehrson
36fa2a0abd [devel] Check for up->location !PNG_AFTER_IDAT when writing unknown chunks 
before IDAT.
 2011-05-11 06:52:37 -05:00
Glenn Randers-Pehrson
2d3fc1ca3b [devel] Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and 
PNG_AFTER_IDAT from pngpriv.h to png.h because they must be visible to
applications that call png_set_unknown_chunks().
 2011-05-10 23:48:00 -05:00
John Bowler
f70c7d02e9 [devel] Added named value and 'flag' gamma support to png_set_gamma. Made a 
minor change from the previous (unreleased) ABI/API to hide the exact value
used for Macs - it's not a good idea to embed this in the ABI!
 2011-05-10 22:54:37 -05:00
Glenn Randers-Pehrson
d768d103cf [devel] Minor revision of commentary about png_set_alpha_mode(). 2011-05-08 23:26:19 -05:00
John Bowler
a9b34191ae [devel] Added expand_16 suppport to the high level interface. 2011-05-08 19:46:51 -05:00
Glenn Randers-Pehrson
87952f0623 [devel] Fix spelling of "implemented" in CHANGES and ANNOUNCE 2011-05-07 22:36:47 -05:00
Glenn Randers-Pehrson
d12c02f020 [devel] Bump to version libpng-1.5.3beta07 2011-05-07 22:07:33 -05:00
Glenn Randers-Pehrson
c7822514cc [devel] Fix typos in comments, add new API synopses to libpng.3 2011-05-07 21:23:43 -05:00
Glenn Randers-Pehrson
af855e415d [devel] Remove some trailing blanks. 2011-05-07 10:54:28 -05:00
Glenn Randers-Pehrson
6ee0edf880 [devel] Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt 2011-05-05 22:13:18 -05:00
Glenn Randers-Pehrson
00015a81dd [devel] Bump to version libpng-1.5.3beta06 2011-05-05 21:11:56 -05:00
Glenn Randers-Pehrson
e1018a5bbb [devel] Imported from libpng-1.5.3beta05.tar 2011-05-05 21:06:51 -05:00
John Bowler
c5bef946b1 [devel] IDAT compression failed if preceded by a compressed text chunk 
This was because the attempt to reset the zlib stream in png_write_IDAT
happened after the first IDAT chunk had been deflated - much too late.
In this change internal functions are added to claim/release the z_stream
and, hopefully, make the code more robust.  Also deflateEnd checking is
added - previously libpng would ignore an error at the end of the stream.
 2011-05-05 17:35:39 -05:00
Glenn Randers-Pehrson
c559bb58ed [devel] Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make zlib "CMF" 
optimization configureable.
 2011-05-05 16:55:20 -05:00
Glenn Randers-Pehrson
4753906826 [devel] Update "last changed" dates and added CHANGES entry. 2011-05-05 07:32:30 -05:00
Glenn Randers-Pehrson
b3b7168077 [devel] Added appropriate feature test macros (_POSIX_SOURCE, _ISOC99_SOURCE) 
to ensure libpng sees the correct API.
 2011-05-03 22:30:19 -05:00
Glenn Randers-Pehrson
24fde6e00f [devel] Bump to version libpng-1.5.3beta05 2011-04-28 23:20:24 -05:00
Glenn Randers-Pehrson
33ced44f9e [devel] Bump to version libpng-1.5.3beta04 2011-04-27 15:38:15 -05:00
Glenn Randers-Pehrson
6cd31bbfce [devel] Give credit for recent bug report to Andrew Church. 2011-04-17 19:02:00 -05:00
Glenn Randers-Pehrson
4bc9f8472c [devel] Updated CHANGES, ANNOUNCE, and pngtest.png to reflect recent changes. 2011-04-17 18:58:38 -05:00
Glenn Randers-Pehrson
a1f9426399 [devel] Bump to version libpng-1.5.3beta04 2011-04-16 21:48:23 -05:00
Glenn Randers-Pehrson
cb1aee2506 [devel] Fixed bug with stripping the filler or alpha channel when writing, 
that was introduced in libpng-1.5.2beta01.
 2011-04-16 19:27:34 -05:00
Glenn Randers-Pehrson
1b491cbda0 [devel] Bump to version libpng-1.5.3beta03 2011-04-03 06:51:53 -05:00
Glenn Randers-Pehrson
8abcf141fa [devel] Imported from libpng-1.5.3beta02.tar 2011-04-03 06:36:34 -05:00
Glenn Randers-Pehrson
6785856858 [devel] Optimize the zlib CMF byte in non-IDAT compressed chunks 2011-04-02 08:26:42 -05:00
Glenn Randers-Pehrson
c3b3240a03 [devel] Improved the optimization of the zlib CMF byte 
(see libpng-1.2.6beta03).
 2011-04-01 22:10:41 -05:00