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510 Commits

Author SHA1 Message Date
John Bowler
2dfcf65981 [libpng16] Fixed NO_WRITE_FILTER and -Wconversion build breaks (John Bowler). 2015-06-03 14:58:18 -05:00
John Bowler
b780eba4e4 [libpng16] Fixed cexcept.h in which GCC 5 now reports that one of the auto 
variables in the Try macro needs to be volatile to prevent value
being lost over the setjmp.
 2015-06-03 14:46:34 -05:00
Glenn Randers-Pehrson
89edbf8317 [libpng16] Removed WRITE_WEIGHTED_FILTERED code, to save a few kbytes of the 
compiled library size. It never worked properly and as far as we can
tell, no one uses it. The png_set_filter_heuristics() and
png_set_filter_heuristics_fixed() APIs are retained but deprecated
and do nothing.
 2015-05-31 22:40:36 -05:00
Glenn Randers-Pehrson
1088f4925f [libpng16] Fixed old cut&paste bug in the weighted filter selection code in 
pngwutil.c, introduced in libpng-0.95, March 1997.
 2015-05-30 22:58:54 -05:00
Glenn Randers-Pehrson
e6877671f1 [libpng16] Backported filter selection code from libpng-1.7.0beta51, to combine 
sub_row, up_row, avg_row, and paeth_row into try_row and tst_row.
 2015-05-30 11:54:45 -05:00
John Bowler
8ee821e69a [libpng16] PNG_RELEASE_BUILD replaces tests where the code depended on the build base 
type and can be defined on the command line, allowing testing in beta builds. Back
ported from libpng17.
 2015-05-06 20:03:14 -05:00
Glenn Randers-Pehrson
c98f7fb4e3 [libpng16] Imported from libpng-1.6.17.tar 2015-03-26 08:11:12 -05:00
Glenn Randers-Pehrson
c5370ede95 [libpng16] Reverted "& 0xff" additions of version 1.6.17beta01. Libpng passes 
the Coverity scan without them.
 2015-03-21 11:54:32 -05:00
John Bowler
c9fd075c89 [libpng16] Fix bug in calculation of maxbits, in png_write_sBIT, introduced 
in libpng-1.6.17beta01 (John Bowler).
 2015-03-16 16:31:13 -05:00
Glenn Randers-Pehrson
7011a8cec3 [libpng16] Added "& 0xff" to things being typecast to "png_byte". 2015-02-27 18:53:44 -06:00
Glenn Randers-Pehrson
6ef579df50 [libpng16] Imported from libpng-1.6.17beta01.tar 2015-01-28 19:15:16 -06:00
Glenn Randers-Pehrson
e8ef689cb9 [libpng16] Imported from libpng-1.6.15.tar 2014-11-20 10:22:57 -06:00
Glenn Randers-Pehrson
cda68df8c1 [libpng16] Changed "#endif /* PNG_FEATURE_SUPPORTED */" to "#endif /* FEATURE */" 2014-11-06 22:11:39 -06:00
Glenn Randers-Pehrson
b963feeec6 [libpng16] More cosmetic changes 2014-11-01 13:18:36 -05:00
Glenn Randers-Pehrson
5d713fe123 [libpng16] Changed remaining "if (!x)" to "if (x == 0)" and "if (x)" to 
"if (x !== 0)"
 2014-10-31 20:58:40 -05:00
Glenn Randers-Pehrson
edb772fd6d [libpng16] Imported from libpng-1.6.14.tar 2014-10-22 19:32:52 -05:00
Glenn Randers-Pehrson
91e3a7d735 [libpng16] Edited some comments in pngwutil.c 2014-10-03 17:33:14 -05:00
Glenn Randers-Pehrson
cb4823d91f [libpng16] Conditionally compile some code in png_deflate_claim(), when 
PNG_WARNINGS_SUPPORTED and PNG_ERROR_TEXT_SUPPORTED are disabled.
 2014-10-03 17:14:39 -05:00
Glenn Randers-Pehrson
d752225d05 [libpng16] Removed "text_len" parameter from private function png_write_zTXt() 
since it is unused.
 2014-10-03 17:11:50 -05:00
Glenn Randers-Pehrson
212fd5745d [libpng16] Bump version to 1.6.13beta01 2014-06-11 21:13:33 -05:00
Glenn Randers-Pehrson
e429c66cea [libpng16] Imported from libpng-1.6.12.tar 2014-06-11 20:41:51 -05:00
Glenn Randers-Pehrson
da7b692ce0 [libpng16] Bump version to 1.6.12beta01 2014-06-06 11:57:30 -05:00
Glenn Randers-Pehrson
c4e0f3de64 [libpng16] Imported from libpng-1.6.11.tar 2014-06-05 10:00:45 -05:00
Glenn Randers-Pehrson
ab9736a647 [libpng16] Allow writing ICC V2 profiles that lack padding (Kai-Uwe Behrmann). 2014-04-25 06:14:50 -05:00
Glenn Randers-Pehrson
05670156f3 [libpng16] Use "if (value != 0)" instead of "if (value)" consistently. 2014-03-08 12:39:52 -06:00
Glenn Randers-Pehrson
24afd07ab9 [libpng16] Changed blank to newline in three function declarations. 2014-03-05 16:55:19 -06:00
Glenn Randers-Pehrson
399430dac2 [libpng16] Update "last changed" comments. 2013-04-25 09:52:00 -05:00
Glenn Randers-Pehrson
3f677d1c65 [libpng16] Bump version to 1.6.3beta01 2013-04-25 09:19:04 -05:00
Glenn Randers-Pehrson
809355b4aa [libpng16] Imported from libpng-1.6.2.tar 2013-04-25 07:29:41 -05:00
Glenn Randers-Pehrson
5ec05b3d7c [libpng16] Removed extra recently-inserted line from pngwutil.c 2013-04-13 20:01:09 -05:00
John Bowler
70eb0720a0 [libpng16] Fixed previous bugfix to work on 64-bit platforms. 2013-04-13 16:52:09 -05:00
Glenn Randers-Pehrson
9bb775fc8c [libpng16] Corrected length written to uncompressed iTXt chunks (Samuli Suominen). 2013-04-13 14:19:25 -05:00
Glenn Randers-Pehrson
871b1d0fab [libpng16] Bump version to 1.6.1beta05 2013-03-02 15:03:15 -06:00
Glenn Randers-Pehrson
f3af706c2a [libpng16] Imported from libpng-1.6.0beta05.tar 2013-03-01 21:38:03 -06:00
Glenn Randers-Pehrson
c53778ff53 [libpng16] Imported from libpng-1.6.0.tar 2013-02-13 22:53:57 -06:00
Glenn Randers-Pehrson
9477ecdfa6 [libpng16] Updated copyright year to 2013 in newly-changed files 2013-01-01 07:45:42 -06:00
John Bowler
24639a63ce [libpng16] Made default Zlib compression settings be configurable. This adds #defines to 
pnglibconf.h to control the defaults.
 2012-12-20 22:26:18 -06:00
Glenn Randers-Pehrson
e4f124e335 [libpng16] Bump version to 1.6.0beta33 2012-12-09 19:25:42 -06:00
John Bowler
f8dfd123e2 [libpng16] Changed ICC profile support to allow use of an external color 
management system (CMS). In practice it is not possible to obtain cHRM
information reliably using just the end-point tags because they do not exist
in the vast majority of profiles.  Instead it is necessary to run the endpoints
through the ICC colorimetric intent transform (as described in the v4
spec).  Since this is likely to be too much code inside libpng for too
little gain (it implies a fairly complete CMS implementation) the code
has been changed to allow an external CMS to be used.  This code is
temporarily disabled until a suitable set of test cases using one or more
external CMS implementations have been implemented.
 2012-10-25 19:30:02 -05:00
Glenn Randers-Pehrson
702053d110 [libpng16] Bump version to 1.6.0beta28 2012-08-17 21:54:45 -05:00
Glenn Randers-Pehrson
025d415838 [libpng16] Folded long lines and fixed some grammar. 2012-08-16 00:51:44 -05:00
Glenn Randers-Pehrson
810c99583b [libpng16] Fixed some spelling errors. 2012-08-15 23:20:47 -05:00
Glenn Randers-Pehrson
3744f94fd1 [libpng16] Removed trailing blanks 2012-08-10 19:22:53 -05:00
Glenn Randers-Pehrson
ece07cfe9c [libpng16] Removed the png_sizeof(), png_strlen(), png_memset(), png_memcpy(), 
and png_memcmp() macros.
 2012-08-10 18:19:41 -05:00
Glenn Randers-Pehrson
dbb7e19fda [libpng16] Consistently use memset(), memcpy(), and memcmp() instead of the 
png_memset(), png_memcpy(), and png_memcmp() macros.
 2012-08-10 17:27:42 -05:00
Glenn Randers-Pehrson
26849f4693 [libpng16] Consistently use png_memset(), png_memcpy(), and png_memcmp(), 
except in pngtest.c and example.c where these macros are not visible.
 2012-08-10 16:01:45 -05:00
John Bowler
134c5761fa [libpng16] Fix new leak when text compression is disabled. 2012-08-10 10:49:21 -05:00
Glenn Randers-Pehrson
4430b91363 [libpng16] Restore info_ptr members that were deleted by the previous 
patch; they are needed by png_set_IHDR() for both read and write.  Fix
some ifdefs that caused the contrib/pngminim/ applications to not compile.
 2012-08-09 22:24:04 -05:00
Glenn Randers-Pehrson
432c174b64 [libpng16] Eliminated use of png_sizeof(); use sizeof() instead, and use. 
a consistent style for (sizeof type) and (sizeof (array))
 2012-08-09 20:14:48 -05:00
Glenn Randers-Pehrson
8f4d67218e [libpng16] Imported from libpng-1.6.0beta22.tar 2012-05-23 13:19:30 -05:00
John Bowler
921648a997 [libpng16] Recognize known sRGB ICC profiles while reading; prefer writing the 
iCCP profile over writing the sRGB chunk, controlled by the
    PNG_sRGB_PROFILE_CHECKS option.
 2012-03-28 23:36:12 -05:00
John Bowler
b11b31aea2 [libpng16] Changed chunk handler warnings into benign errors, incrementally 
load iCCP
 2012-03-21 07:55:46 -05:00
John Bowler
b5d0051dcb [libpng16] Deflate/inflate was reworked to move common zlib calls into single 
functions [rw]util.c.  A new shared keyword check routine was also added
and the 'zbuf' is no longer allocated on progressive read.  It is now
possible to call png_inflate() incrementally.
 2012-03-09 09:15:18 -06:00
John Bowler
6225b0e61e [libpng16] Added code to validate the windowBits value passed to deflateInit2(). 
If the call to deflateInit2() is wrong a png_warning will be issued
(in fact this is harmless, but the PNG data produced may be sub-optimal).
 2012-03-05 21:26:57 -06:00
John Bowler
42a2b556e9 [libpng16] Made read 'inflate' handling like write 'deflate' handling. The 
read code now claims and releases png_ptr->zstream, like the write code.
The bug whereby the progressive reader failed to release the zstream
is now fixed, all initialization is delayed, and the code checks for
changed parameters on deflate rather than always calling
deflatedEnd/deflateInit.
 2012-03-05 20:57:40 -06:00
John Bowler
6f237b6bf0 [libpng16] Remove whitespace at end of lines 2012-03-02 13:20:52 -06:00
John Bowler
cf49919686 [libpng16] Fixed some bugs in ICC profile writing. The code should now accept 
all potentially valid ICC profiles and reject obviously invalid ones.
It now uses png_error() to do so rather than casually writing a PNG
without the necessary color data.
 2012-03-01 21:54:07 -06:00
Glenn Randers-Pehrson
1531bd61a0 [libpng16] Updated copyright year to 2012 2012-01-01 14:45:04 -06:00
John Bowler
5d56786eff [libpng16] Implemented 'restrict' for png_info and png_struct. 
Added new "png_structrp" typedef. Because of the
way libpng works both png_info and png_struct are always accessed via a
single pointer.  This means adding C99 'restrict' to the pointer gives
the compiler some opportunity to optimize the code.  This change allows that.
 2011-12-24 09:12:00 -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
5c1905caae [libpng15] Fixed a relatively harmless memory overwrite 
in compressed text writing
 2011-10-14 12:33:52 -05:00
Glenn Randers-Pehrson
5b3b54e3f6 [libpng15] Imported from libpng-1.5.6beta05.tar 2011-10-12 06:47:31 -05:00
Glenn Randers-Pehrson
ba55c0770b [libpng15] Use PNG_CSTRING_FROM_CHUNK macro with png_debug2() in pngwutil.c 2011-10-11 21:21:37 -05:00
Glenn Randers-Pehrson
76b62317b5 [libpng15] Fixed bug in png_write_chunk_header() debug print, 
introduced in 1.5.6bet01.
 2011-10-11 13:54:27 -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
Glenn Randers-Pehrson
853afe631c [libpng15] Bump version to libpng-1.5.5beta09 2011-09-09 22:33:48 -05:00
John Bowler
f3f7e14727 [libpng15] Fixed 64-bit compilation errors (gcc). The errors fixed relate 
to conditions where types that are 32 bits in the GCC 32-bit
world (uLong and png_size_t) become 64 bits in the 64-bit
world.  This produces potential truncation errors which the
compiler correctly flags.
 2011-09-09 07:32:37 -05:00
Glenn Randers-Pehrson
d404b6d488 [devel] Imported from libpng-1.5.4.tar 2011-07-07 06:26:30 -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
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
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
3fceee058f [devel] Fix typo in pngwutil.c comment. 2011-05-23 06:31:33 -05:00
Glenn Randers-Pehrson
492ef9c964 [devel] Apply new PNG_WARNING_PARAMETERS macro in pngwutil.c 2011-05-07 21:42:25 -05:00
John Bowler
d273ad2d0f [devel] Implementation of premultiplied alpha support: png_set_alpha_mode 
(libpng-manual.txt still to be updated, see png.h for documentation.)
 2011-05-07 21:00:28 -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
John Bowler
88b77cc6f3 [devel] Remove png_snprintf, add formatted warning messages. 
This change adds internal APIs to allow png_warning messages to have parameters
 without requiring the host OS to implelment snprintf.  As a side effect the
 dependency of the RFC1132 code on stdio is removed and PNG_NO_WARNINGS does
 actually work now.
 2011-05-05 06:49:55 -05:00
John Bowler
8d4ce1fed5 [devel] Fixed 64-bit builds where png_uint_32 is smaller than png_size_t 2011-04-15 06:54:30 -05:00
Glenn Randers-Pehrson
61365b6d15 [devel] Removed "#if 1" and the matching "#endif" 2011-04-03 19:49:37 -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
e99107b1aa [devel] Moved misplaced declarations 2011-04-02 05:49:03 -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
Glenn Randers-Pehrson
c683100e31 [devel] zlib text compression parameters fall back on non-IDAT parameters 
except for strategy which defaults to the zlib default.
 2011-04-01 15:24:18 -05:00
Glenn Randers-Pehrson
ec8296ab81 [devel] Relocated some comment lines in pngwutil.c 2011-04-01 15:09:05 -05:00
Glenn Randers-Pehrson
205483d592 [devel] Added PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro. 2011-04-01 12:33:42 -05:00
Glenn Randers-Pehrson
3bb8683a79 [devel] Only compile the new zlib re-initializing code when text or iCCP 
is supported.
 2011-04-01 08:12:24 -05:00
Glenn Randers-Pehrson
ee1369b853 [devel] Imported from libpng-1.5.3beta01.tar 2011-03-31 23:50:36 -05:00
Glenn Randers-Pehrson
f83783115f [devel] Use a mode bit to avoid reopening the zstream except when necessary. 2011-03-31 22:06:04 -05:00
Glenn Randers-Pehrson
ed8aab4d85 [devel] Free zstream memory with deflateEnd before reinitializing it. 2011-03-31 21:33:39 -05:00
Glenn Randers-Pehrson
6b3d50b2cd [devel] Re-initialize the zlib compressor before compressing non-IDAT chunks. 2011-03-31 20:14:29 -05:00
Glenn Randers-Pehrson
f5ea1b7095 [devel] Imported from libpng-1.5.0.tar 2011-01-06 06:45:07 -06:00
Glenn Randers-Pehrson
64b863cd2a [devel] Update copyright year and bump to version libpng-1.5.0rc07 2011-01-04 09:58:33 -06:00
Glenn Randers-Pehrson
b3edc73afa [devel] Changes to remove gcc warnings (John Bowler) 
Certain optional gcc warning flags resulted in warnings in libpng code.
With these changes only -Wconversion and -Wcast-qual cannot be turned on.
Changes are trivial rearrangements of code.  -Wconversion is not possible
for pngrutil.c (because of the widespread use of += et al on variables
smaller than (int) or (unsigned int)) and -Wcast-qual is not possible
with pngwio.c and pngwutil.c because the 'write' callback and zlib
compression both fail to declare their input buffers with 'const'.
 2010-11-21 14:06:41 -06:00
Glenn Randers-Pehrson
a581556b17 [master] Revised png_get_uint_32, png_get_int_32, png_get_uint_16 (Cosmin) 
Moved reading of file signature into png_read_sig (Cosmin)
Fixed atomicity of chunk header serialization (Cosmin)
Added test for io_state in pngtest.c (Cosmin)
Added "#!/bin/sh" at the top of contrib/pngminim/*/gather.sh scripts.
 2010-11-20 21:48:29 -06:00
Glenn Randers-Pehrson
ccadcae40b [devel] Added whitespace in pngrutil.c, pngwtran.c, and pngwutil.c 2010-10-23 17:29:13 -05:00
Glenn Randers-Pehrson
f0eda4e8d7 [devel] Imported from libpng-1.5.0beta51.tar 2010-10-15 15:08:42 -05:00