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Author SHA1 Message Date
Glenn Randers-Pehrson
162f9f87f9 [libpng16] Remove newly-added useless typecasts. 2015-11-16 09:23:25 -06:00
Glenn Randers-Pehrson
9965f63a44 [libpng16] Changed size_t to png_uint_32 in new buffer checks (John Bowler) 2015-11-15 15:27:22 -06:00
Glenn Randers-Pehrson
070a0eb58f [libpng16] Revised recent pngrutil.c patch as suggested by pascal 2015-11-14 16:45:26 -06:00
Glenn Randers-Pehrson
0b4e7deab1 [libpng16] Avoid potential pointer overflow in png_handle_sPLT() and 
png_handle_pCAL() (Bug report by John Regehr).
 2015-11-13 11:05:27 -06:00
Glenn Randers-Pehrson
f1cdf4e1ca [libpng16] Bump version to 1.6.20beta01 2015-11-13 10:18:18 -06:00
Glenn Randers-Pehrson
415d26805a [libpng16] Imported from libpng-1.6.19.tar v1.6.19 2015-11-12 07:13:31 -06:00
Glenn Randers-Pehrson
83f4c735c8 [libpng16] Clean up coding style in png_handle_PLTE() 2015-11-05 11:18:44 -06:00
Glenn Randers-Pehrson
64fef09b67 [libpng16] Imported from libpng-1.6.19rc04.tar v1.6.19rc04 2015-11-05 06:59:34 -06:00
Glenn Randers-Pehrson
9f2ad4928e [libpng16] Fixed new bug with CRC error after reading an over-length palette. 2015-11-04 23:47:42 -06:00
Glenn Randers-Pehrson
0e30044094 [libpng16] Imported from libpng-1.6.19rc03.tar v1.6.19rc03 2015-11-03 09:57:01 -06:00
Glenn Randers-Pehrson
fc8450833a [libpng16] Clarified COPYRIGHT information to state explicitly that versions 
are derived from previous versions.
Removed much of the long list of previous versions from png.h and
    libpng.3.
 2015-11-03 08:24:56 -06:00
Glenn Randers-Pehrson
6761aacbfa [libpng16] Bump version to 1.6.19rc03 2015-11-03 08:15:06 -06:00
Glenn Randers-Pehrson
408dbac801 [libpng16] Fixed some inconsequential cut-and-paste typos 
in png_set_cHRM_XYZ_fixed().
 2015-11-01 12:38:33 -06:00
Glenn Randers-Pehrson
b00d986d54 [libpng16] Imported from libpng-1.6.19rc02.tar v1.6.19rc02 2015-10-31 09:04:18 -05:00
Glenn Randers-Pehrson
305ada6672 Merge branch 'libpng16' of https://github.com/jbowler/libpng-1 into libpng16 2015-10-30 12:48:07 -05:00
Glenn Randers-Pehrson
1bef8e9799 [libpng16] Silently truncate over-length PLTE chunk while reading. 2015-10-30 11:34:37 -05:00
Glenn Randers-Pehrson
a901eb3ce6 [libpng16] Prevent reading over-length PLTE chunk (Cosmin Truta). 2015-10-30 07:57:49 -05:00
John Bowler
896c3cfb76 rowbytes check correction 
The old code incorrectly calculated the output rowbytes when the
application decreased either the number of channels or the bit depth (or
both) in a user transform.  This was safe; libpng overallocated buffer
space (potentially by quite a lot; up to 4 times the amount required)
but, from 1.5.4 on, resulted in a png_error.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-10-29 18:16:48 -07:00
Glenn Randers-Pehrson
06509be841 [libpng16] Bump version to 1.6.19rc02 2015-10-29 09:28:33 -05:00
Glenn Randers-Pehrson
81f44665cc [libpng16] Reject attempt to write over-length PLTE chunk 2015-10-29 09:26:41 -05:00
Glenn Randers-Pehrson
9c7ed35a65 [libpng16] Imported from libpng-1.6.19rc01.tar v1.6.19rc01 2015-10-23 09:30:20 -05:00
Glenn Randers-Pehrson
05e81e18d2 [libpng16] Bump version to 1.6.19beta05 2015-10-14 22:25:29 -05:00
Glenn Randers-Pehrson
6ca8ee1518 [libpng16] Imported from libpng-1.6.19beta04.tar v1.6.19beta04 2015-10-14 22:25:21 -05:00
Glenn Randers-Pehrson
59e655b020 [libpng16] Added sPLT support to pngtest.c 2015-10-10 12:05:55 -05:00
Glenn Randers-Pehrson
5bd9d66098 [libpng16] Updated CHANGES and ANNOUNCE 2015-10-03 15:16:53 -05:00
John Bowler
2163c930b0 pow and sbit fixes backported to pngvalid from 1.7 
Signed-off-by: John Bowler <jbowler@acm.org>
 2015-10-03 11:14:43 -07:00
John Bowler
18f0bd1d63 Merge remote-tracking branch 'local/libpng16' into libpng16 2015-09-27 08:52:50 -07:00
Glenn Randers-Pehrson
5b9c044332 Revert "[libpng16] Fix bad merge of contrib/libtests/pngvalid.c" 
This reverts commit 9517f7b6367045b298619310587307e8471808a7.
 2015-09-27 09:17:45 -05:00
John Bowler
dc3069bcb1 Merge branch 'libpng16' into libpng16-pngvalid-rgb-to-gray-digitize-issues 2015-09-26 21:29:06 -07:00
Glenn Randers-Pehrson
9517f7b636 [libpng16] Fix bad merge of contrib/libtests/pngvalid.c 2015-09-26 23:11:15 -05:00
Glenn Randers-Pehrson
b77d929217 [libpng16] Restored Makefile.am and configure.ac (they had been 
inadvertently replaced with libpng17 versions).
 2015-09-26 22:54:51 -05:00
Glenn Randers-Pehrson
b939ce06be [libpng17] Makefile.am and configure.ac were out of date. 2015-09-26 22:26:44 -05:00
Glenn Randers-Pehrson
f9e37f54eb [libpng16] Worked around rgb-to-gray issues in libpng 1.6. The previous 
attempts to ignore the errors in the code aren't quite enough to
deal with the 'channel selection' encoding added to libpng 1.7; abort.
 2015-09-26 21:31:53 -05:00
John Bowler
04402a9126 Fix (work round) rgb-to-gray issues in libpng 1.6 
The previous attempts to ignore the errors in the code aren't quite enough to
deal with the 'channel selection' encoding added to libpng 1.7; abort.
pngvalid.c is changed to drop this encoding in prior versions.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-26 17:41:02 -07:00
Glenn Randers-Pehrson
068cb3a64c [libpng16] Bump version to 1.6.19beta04 2015-09-26 09:44:43 -05:00
Glenn Randers-Pehrson
f4302a73ac [libpng16] Imported from libpng-1.6.19beta03.tar v1.6.19beta03 2015-09-26 09:44:34 -05:00
John Bowler
23ddeb58a5 pngvalid tests: add --strict, fix test names 
Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-25 17:06:58 -07:00
John Bowler
956f295d48 Merge remote-tracking branch 'local/libpng16' into libpng16 2015-09-25 16:58:43 -07:00
Glenn Randers-Pehrson
61257bc2de [libpng16] Update CHANGES and ANNOUNCE 2015-09-25 18:25:08 -05:00
John Bowler
6297297708 Enable low-bit-depth gray tests in pngvalid 
Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-25 16:21:45 -07:00
John Bowler
fd42ef9b06 pngstest 1.6 error limit and warning revisions 
Remove the '--strict' in 1.6 because of the double-gamma-correction warning,
update pngstest-errors.h for the errors detected with the new contrib/testspngs
PNG test files.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-25 13:40:18 -07:00
John Bowler
a2671a7f49 test PNG files (contrib/testpngs) 
Back ported from libpng 1.7

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-25 13:10:13 -07:00
John Bowler
fa5ba2e026 New test PNG files incorporated into make check 
tests/pngstest-* are changed so that the new test files are divided into 8
groups by gamma and alpha channel.  This makes each test take just under 5
seconds on a moderately up-to-date x86_64 system using libpng16 (test times are
somewhat variable under libpng17 at present because of the lack of optimization
in some gamma processing paths.)

These tests have considerably better code and pixel-value coverage than
contrib/pngsuite however coverage is still incomplete.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-25 12:41:56 -07:00
Glenn Randers-Pehrson
01a0e8062d [libpng16] Reverted addition of png_set_filler_16 and png_set_add_alpha_16() 
functions. They unnecessarily duplicate png_set_filler() and png_set_add_alpha()
which now work properly with 16-bit images.
 2015-09-24 22:39:53 -05:00
Glenn Randers-Pehrson
5b038f83e7 [libpng16] Fix typo in manual 2015-09-23 22:27:14 -05:00
Glenn Randers-Pehrson
efe4e5d10d [libpng16] Reverted the fix of byte order in png_do_read_filler() with 16-bit 
input that was made in version 1.6.17beta01, to preserve legacy
behavior even though it was incorrect.  Instead, added new API
png_set_filter_16() and png_set_add_alpha_16() that set a flag to
make png_do_read_filter() interpret the filler bytes properly.
 2015-09-23 22:08:04 -05:00
John Bowler
d6eb4b71ac Updated pngstest-errors.h 
This update incorporates errors resulting from the more extensive image test
suite used in libpng 1.7

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-20 20:59:10 -07:00
Glenn Randers-Pehrson
4c9c43d4d4 [libpng16] Added license info to pngstest-errors.h and its generator. 2015-09-19 20:17:44 -05:00
Glenn Randers-Pehrson
0cc11b86ba [libpng16] Update ANNOUNCE and CHANGES with recent pngstest updates. 2015-09-19 19:57:59 -05:00
John Bowler
93b4568fc0 pngstest: make error limits version specific 
Splitting the machine generated error structs out to a file allows the values to
be updated without changing pngstest.c itself, since libpng 1.6 and 1.7 have
slightly different error limits this simplifies maintenance.

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-09-19 16:34:30 -07:00