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506 Commits

Author SHA1 Message Date
Glenn Randers-Pehrson
93b3476358 [libpng16] Imported from libpng-1.6.28rc03.tar 2017-01-03 22:25:10 -06:00
Glenn Randers-Pehrson
edef058e18 [libpng16] Moved SSE2 optimization code into the main libpng source directory. 
Configure libpng with "configure --enable-intel-see" or compile
libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it.
 2017-01-03 19:15:15 -06:00
Glenn Randers-Pehrson
0c440812db [libpng16] Imported from libpng-1.6.26.tar 2016-10-19 19:11:38 -05:00
Glenn Randers-Pehrson
890611200a [libpng16] Imported from libpng-1.6.26beta03.tar 2016-10-02 19:10:10 -05:00
Glenn Randers-Pehrson
fbe3e002bc Merge branch 'libpng16' of git://github.com/jbowler/libpng into libpng16 2016-09-30 21:51:27 -05:00
John Bowler
319c9852bf Unsigned overflow 
Remove all currently detected cases of unsigned overflow.  Detection is
runtime, so test case dependent.  The changes to pngvalid.c eliminate
spurious and probably invalid tests with one while loop exception.

Apart from that and the change to the dependence on the intended
unsigned overflow in pngtrans.c the changes are limited to altering the
meme for an unsigned 'x' from:

   while (x-- > 0)

to

   for (; x > 0; --x)

This works because, in all cases, the control variable is not used in
the loop.  The 'while' meme was, at one time, warn'ed by GCC so it is
probably a good change, for some weird religious value of good.

Signed-off-by: John Bowler <jbowler@acm.org>
 2016-09-30 18:37:22 -07:00
Glenn Randers-Pehrson
fa24421216 [libpng16] Quieted 74 (out of 288) -Wconversion compiler warnings by changing 
flag definitions in pngpriv.h from 0xnnnn to 0xnnnnU.
 2016-09-30 16:26:07 -05:00
Glenn Randers-Pehrson
7835716cef [libpng16] Changed PNG_ZLIB_VERNUM to ZLIB_VERNUM in pngpriv.h, pngstruct.h, 
and pngrutil.c.
 2016-09-19 16:46:54 -05:00
Glenn Randers-Pehrson
e3a6631123 [libpng16] Imported from libpng-1.6.25.tar 2016-08-31 22:30:47 -05:00
Glenn Randers-Pehrson
4ade4e8a0d [libpng16] Updated CHANGES and ANNOUNCE 2016-08-30 04:26:29 -05:00
Mandar Sahastrabuddhe
d1f14c829a Added MIPS MSA optimization for following functions: 
1. png_read_filter_row_sub4_msa
    2. png_read_filter_row_avg4_msa
    3. png_read_filter_row_paeth4_msa
    4. png_read_filter_row_sub3_msa
    5. png_read_filter_row_avg3_msa
    6. png_read_filter_row_paeth3_msa

Signed-off-by: Mandar Sahastrabuddhe <Mandar.Sahastrabuddhe@imgtec.com>
 2016-08-30 13:51:25 +05:30
Glenn Randers-Pehrson
05a4db1fcd [libpng16] Update CHANGES, ANNOUNCE with entry about MIPS support 2016-08-29 09:13:09 -05:00
Mandar Sahastrabuddhe
ee5e39835c Added build support for MIPS MSA 
Also added one msa optimized function: png_read_filter_row_up_msa

Signed-off-by: Mandar Sahastrabuddhe <Mandar.Sahastrabuddhe@imgtec.com>
 2016-08-29 19:07:25 +05:30
Glenn Randers-Pehrson
e018ab98be Merge branch 'libpng16' of git://github.com/jbowler/libpng into libpng16 2016-08-10 20:49:48 -05:00
John Bowler
92a7c79db2 [libpng16] Reject oversized iCCP profile length 
The code now validates the ICC profile length against the user chunk limit
before the buffer is allocated, as opposed to doing it while the buffer is read.

This removes the potential to consume virtual address space with a carefully
crafted ICC profile; only an issue on 32-bit systems where a valid profile can
be up to 2^32-4 bytes in length.  libpng never writes beyond the application
supplied limit, but previously it did allocate a buffer of the size specified in
the profile header.  The exploitability of this is almost zero; the address
space is released as soon as the PNG read completes.

Also clean up PNG_DEBUG compile of pngtest.c.

Signed-off-by: John Bowler <jbowler@acm.org>
 2016-08-10 15:35:09 -07:00
Glenn Randers-Pehrson
b50d5cea2b [libpng16] Imported from libpng-1.6.24.tar 2016-08-03 21:32:26 -05:00
Glenn Randers-Pehrson
96db0fff50 [libpng16] Conditionally compile ARM_NEON headers in pngpriv.h 
Updated contrib/intel/intel_sse.patch
 2016-08-02 09:31:05 -05:00
Glenn Randers-Pehrson
0fd9a249de [libpng16] Update "last changed" dates 2016-07-13 16:29:22 -05:00
Glenn Randers-Pehrson
192e92d681 [libpng16] Fixed some indentation to comply with our coding style. 2016-07-13 14:43:42 -05:00
Glenn Randers-Pehrson
f757d74898 [libpng16] Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch. 2016-05-31 09:45:17 -05:00
Glenn Randers-Pehrson
ac43a87820 [libpng16] Imported from libpng-1.6.22.tar 2016-05-26 07:25:14 -05:00
Glenn Randers-Pehrson
a967818235 [libpng16] Moved INTEL-SSE code from pngpriv.h to contrib/intel/intel_sse.patch. 2016-04-19 08:23:10 -05:00
Glenn Randers-Pehrson
1a3fa1e091 [libpng16] Imported from libpng-1.6.22beta03.tar 2016-03-09 12:04:40 -06:00
Matt Sarett
342c4eab2a Move sse opts into contrib/intel 2016-02-18 12:43:50 -05:00
Matt Sarett
9a308a3344 Add intel opts to Makefile and configure.ac 2016-02-17 11:43:34 -05:00
Matt Sarett
5bc58a0ebc Use immintrin, tweak checks for SSE4, SSSE3 2016-02-16 10:53:36 -05:00
Matt Sarett
577c1f0305 Reformat a bit, add MSVS checks, add SSE4 2016-02-16 10:10:11 -05:00
Matt Sarett
f84f957881 Use PNG_INTEL_SSE_OPT instead of PNG_INTEL_SSE2_OPT 2016-02-15 14:45:14 -05:00
Matt Sarett
9c946e22fc Add SSSE3 and SSE2 optimized png filter functions 2016-02-15 14:41:27 -05:00
Glenn Randers-Pehrson
5031c77d85 [libpng16] Bump version to 1.6.22beta01 2016-01-16 08:00:09 -06:00
Glenn Randers-Pehrson
fc0786a442 [libpng16] Imported from libpng-1.6.21.tar 2016-01-15 13:51:06 -06:00
Glenn Randers-Pehrson
092b8d7bf3 [libpng16] Imported from libpng-1.6.21rc01.tar 2016-01-04 08:24:14 -06:00
Glenn Randers-Pehrson
975cbbb029 [libpng16] Moved png_check_keyword() from pngwutil.c to pngset.c 2015-12-13 15:04:18 -06:00
John Bowler
28a1cdfc2e Fix inconsistent handling of invalid zlib data 
In libpng 1.6 zlib initialization was changed to use the window size in the zlib
stream, not a fixed value.  This causes some invalid images, ones where CINFO is
too large, to display 'correctly' if the rest of the data is valid.  This
provides a work-round for zlib versions where the error arises (ones that
support the API change to use the window size in the stream).

Signed-off-by: John Bowler <jbowler@acm.org>
 2015-11-27 23:57:39 -08:00
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
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
Glenn Randers-Pehrson
8b83ff3704 [libpng16] Change "n bit" to "n-bit" in comments. 2015-08-13 20:57:18 -05:00
Glenn Randers-Pehrson
67806d44c1 [libpng16] Imported from libpng-1.6.19beta01.tar 2015-07-30 11:18:15 -05:00
Glenn Randers-Pehrson
e6172809bd [libpng16] Imported from libpng-1.6.18.tar 2015-07-22 22:40:52 -05:00
Glenn Randers-Pehrson
b9e5e5f5a8 [libpng16] Replaced arbitrary use of 'extern' with #define PNG_LINKAGE_*. To 
preserve API compatibility, the new defines all default to "extern"
(requested by Jan Nijtmans).
 2015-07-03 16:07:54 -05:00
John Bowler
25bfb13770 [libpng16] Removed non-working progressive reader 'skip' function. This 
function has apparently never been used. It was implemented
to support back-door modification of png_struct in libpng-1.4.x
but was apparently never tested (because it does nothing and cannot
do anything).
 2015-06-03 14:31:08 -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
d8d18fbb02 [libpng16] Imported from libpng-1.6.18beta03.tar 2015-05-06 16:39:31 -05:00
Glenn Randers-Pehrson
216ab04994 [libpng16] Updated comment in pngpriv.h about ARM support. 2015-04-29 11:30:35 -05:00
Glenn Randers-Pehrson
bd85b5713c [libpng16] Imported from libpng-1.6.18beta01.tar 2015-04-01 08:24:14 -05:00
Glenn Randers-Pehrson
218a6fe9e5 [libpng16] Bump version to 1.6.18beta01 2015-03-26 08:55:25 -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
7011a8cec3 [libpng16] Added "& 0xff" to things being typecast to "png_byte". 2015-02-27 18:53:44 -06:00
Sergey Kosarevsky
9a3de48b48 [libpng16] Avoid runtime checks when converting integer to png_byte with 
Visual Studio (Sergey Kosarevsky)
 2015-02-27 18:47:43 -06:00
Glenn Randers-Pehrson
43d90b1610 [libpng16] Bump version to 1.6.17beta04 2015-02-17 10:52:33 -06:00