Commit Graph

123 Commits

Author SHA1 Message Date
Glenn Randers-Pehrson
3455238a4e [libpng16] Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS
-> CPPFLAGS and PNG_USR_CONFIG -> PNG_USER_CONFIG).
2014-02-26 22:08:58 -06:00
Glenn Randers-Pehrson
78c28fea51 [libpng16] Imported from libpng-1.6.10beta02.tar 2014-02-22 23:12:02 -06:00
John Bowler
c10930a4fc [libpng16] Bookkeeping: Moved functions around (no changes). Moved transform
function definitions before the place where they are called so that
they can be masde static. Move the intrapixel functions and the
grayscale palette builder out of the png?tran.c files. The latter
isn't a transform function and is no longer used internally, and the
former MNG specific functions are better placed in pngread/pngwrite.c
2013-12-19 15:24:06 -06:00
Glenn Randers-Pehrson
c912050a7b [libpng16] Fixed 'minimal' builds. Various obviously useful minimal
configurations don't build because of missing contrib/libtests test programs
and overly complex dependencies in scripts/pnglibconf.dfa. This change adds
contrib/conftest/*.dfa files that can be used in automatic build
scripts to ensure that these configurations continue to build.
2013-11-22 14:58:04 -06:00
Glenn Randers-Pehrson
d2d09e5bf9 [libpng16] Imported from libpng-1.6.7rc01.tar 2013-11-02 15:48:28 -05:00
Glenn Randers-Pehrson
b3721757a0 [libpng16] Catch up with some recent changes that did not get merged. 2013-09-30 13:56:44 -05:00
John Bowler
f260f6d156 [libpng16] Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage.
Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test
on __ARM_NEON__ from configure time to compile time.  This breaks symbol
prefixing because the definition of the special png_init_filter_functions
call was hidden at configure time if the relevant compiler arguments are
passed in CFLAGS as opposed to CC.  This change attempts to avoid all
the confusion that would result by declaring the init function even when
it is not used, so that it will always get prefixed.
2013-06-08 13:13:53 -05:00
John Bowler
18dd07e3e6 [libpng16] Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from
pnglibconf.h, allowing more of the decisions to be made internally
(pngpriv.h) during the compile.  Without this, symbol prefixing is broken
under certain circumstances on ARM platforms.  Now only the API parts of
the optimizations ('check' vs 'api') are exposed in the public header files
except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the
decision about whether or not to use the optimizations.
2013-06-08 13:07:13 -05:00
John Bowler
aa22442a9c [libpng16] Make ARM NEON support work at compile time (not just configure time).
This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
using a compiler that compiles for multiple architectures at one time.
2013-06-06 12:49:53 -05:00
John Bowler
9afb90f885 [libpng16] Attempt to detect configuration issues with pngdeflate,
which requires both the correct libpng and the correct zlib to function
correctly.
2013-05-08 14:21:46 -05:00
John Bowler
0c7ac064d3 [libpng16] Added an option to force maximum window size for inflating.
For inflate, reverted previous fixes.
Added fixitxt and pngdeflate to the built programs and removed warnings
from the source code and timepng that are revealed as a result.  Fixed
fixitxt when the chunk length is more than 65535 (untested, no test case).
2013-05-07 21:59:05 -05:00
Glenn Randers-Pehrson
2c0833e265 [libpng16] Committed new pnglibconf.dfa and prebuilt. 2013-05-05 22:18:53 -05:00
John Bowler
f3728100d9 [libpng16] Corrected Android builds and corrected libpng.vers with symbol
prefixing This adds an API to set optimization options externally,
    providing an alternative and general solution for the non-portable
    run-time tests used by the ARM Neon code.  It also makes those tests
    compile and link on Android.
  The order of settings vs options in pnglibconf.h is reversed to allow
    settings to depend on options and options can now set (or override) the
    defaults for settings.
2013-03-04 16:26:31 -06:00
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
f8a8ead5cb [libpng16] Update the INSTALL document. 2013-02-22 16:52:21 -06:00
John Bowler
09a5ca72ac [libpng16] Allow run-time ARM NEON checking to be disabled. A new configure
option:
    --enable-arm-neon=always will stop the run-time checks. New checks
    within arm/arm_init.c will cause the code not to be compiled unless
    __ARM_NEON__ is set. This should make it fail safe (if someone asks
    for it on then the build will fail if it can't be done.)
Fixed ALIGNED_MEMORY support.
2013-02-18 22:30:35 -06:00
John Bowler
23a101e06d [libpng16] scripts/pnglibconf.dfa formatting improvements back ported from libpng 1.7. 2013-02-16 00:18:20 -06:00
John Bowler
42835d3d19 [libpng16] Ported libpng 1.5 options.awk/dfn file handling to 1.6, fixed one bug. 2013-02-15 23:40:34 -06:00
John Bowler
6db8e4dd11 [libpng16] Fixed inconsistencies in png.h and pnglibconf.dfa 2013-02-10 17:49:25 -06:00
Glenn Randers-Pehrson
88c5a2a068 [libpng16] Fixed typo in png.h #ifdef 2013-02-10 16:39:55 -06:00
Glenn Randers-Pehrson
d000fb89c0 [libpng16] Enclosed the new png_get_palette_max
in #ifdef PNG_GET_PALETTE_MAX_SUPPORTED block, and revised pnglibconf.h
and pnglibconf.h.prebuilt accordingly.
2013-02-10 15:46:06 -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
b6bfd40da2 [libpng16] Imported from libpng-1.6.0beta34.tar 2012-12-19 16:12:30 -06:00
John Bowler
520803d57e [libpng16] Removed non-working ICC profile support code. There was too much
code for too little gain; implementing full ICC color correction is maybe
desireable but is left up to applications.
2012-11-01 08:12:47 -05:00
John Bowler
ab1477d662 [libpng16] Made PNG_NO_READ_GAMMA switch off interfaces that depend on
READ_GAMMA.  Prior to 1.6.0 switching off READ_GAMMA did unpredictable things
to the interfaces that use it (specifically, png_do_background in 1.4 would
simply display composite for grayscale images but do composition
with the incorrect arithmetic for color ones). In 1.6 the semantic
of -DPNG_NO_READ_GAMMA is changed to simply disable any interface that
depends on it; this obliges people who set it to consider whether they
really want it off if they happen to use any of the interfaces in
question (typically most users who disable it won't).
2012-10-27 06:57:12 -05:00
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
John Bowler
4a6c6df6c7 [libpng16] Allow fine grain control of unknown chunk APIs. This change allows
png_set_keep_unknown_chunks() to be turned off if not required and causes
both read and write to behave appropriately (on read this is only possible
if the user callback is used to handle unknown chunks).  The change
also removes the support for storing unknown chunks in the info_struct
if the only unknown handling enabled is via the callback, allowing libpng
to be configured with callback reading and none of the unnecessary code.
2012-08-16 16:12:13 -05:00
Glenn Randers-Pehrson
810c99583b [libpng16] Fixed some spelling errors. 2012-08-15 23:20:47 -05:00
John Bowler
e9567514dd [libpng16] Unknown handling fixes and clean up. This adds more correct option
control of the unknown handling, corrects the pre-existing bug where
the per-chunk 'keep' setting is ignored and makes it possible to skip
IDAT chunks in the sequential reader (broken in earlier 1.6 versions).
There is a new test program, test-unknown.c, which is a work in progress
(not currently part of the test suite).  Comments in the header files now
explain how the unknown handling works.
2012-08-15 22:53:00 -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
Glenn Randers-Pehrson
48015617d3 [libpng16] Recognize known sRGB ICC profiles while reading and issue a warning
about it, if PNG_WARN_IF_iCCP_IS_sRGB_SUPPORTED is defined.
2012-03-28 10:58:01 -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
aa816c4444 [libpng16] Added configuration support for benign errors and changed the read
default. Also changed some warnings in the iCCP and sRGB handling
from to benign errors. Configuration now makes read benign
errors warnings and write benign errors to errors by default (thus
changing the behavior on read).  The simplified API always forces
read benign errors to errors (regardless of the system default, unless
this is disabled in which case the simplified API can't be built.)
2012-03-16 07:39:49 -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
Glenn Randers-Pehrson
79a141876a [libpng16] Revised scripts/pnglibconf.dfa 2012-03-02 22:50:03 -06:00
Glenn Randers-Pehrson
363ae65e2b [libpng16] Added tests for invalid palette index while reading and writing
(work in progress, the latter isn't finished).
2012-03-01 21:39:29 -06:00
Glenn Randers-Pehrson
4690b89eaa [libpng16] Added PNG_SAFE_LIMITS feature to pnglibconf.dfa, pngpriv.h, and new pngusr.dfa
to reset the user limits to safe ones if PNG_SAFE_LIMITS is defined.
To enable, use CPPFLAGS=-DPNG_SAFE_LIMITS on the configure command
or put #define PNG_SAFE_LIMITS_SUPPORTED in pnglibconf.h.prebuilt.
(Reverted previous implementation of PNG_SECURE.)
2012-02-24 11:43:31 -06:00
Glenn Randers-Pehrson
10c0693210 [libpng16] Added PNG_SECURE feature to pnglibconf.dfa and new pngusr.dfa file
to reset the user limits to safe ones if PNG_SECURE is defined.
2012-02-23 18:41:13 -06:00
John Bowler
6437604a5e [libpng16] Fix comment in scripts/pnglibconf.dfa 2012-01-31 20:58:02 -06:00
John Bowler
42369ccd85 [libpng16] Added symbol prefixing that allows all the libpng external symbols
to be prefixed (suggested by Reuben Hawkins).  This is work in progress that
breaks some non-configure builds.
2012-01-31 07:28:13 -06:00
Glenn Randers-Pehrson
26aad85204 [libpng16] Imported from libpng-1.6.0beta01.tar 2011-12-15 10:31:17 -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
d58251b47e [libpng15] Reverted previous change; removed png_get_compression_buffer() API.
It is too risky. Exactly how png_ptr->zbuf is used is under control of the
individual chunk implementation and there could easily be significant changes
within a major release.
2011-10-13 20:30:02 -05:00
Glenn Randers-Pehrson
d3dcb463d6 [libpng15] Added png_get_compression_buffer() API. 2011-10-13 17:51:31 -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
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
66b942ce16 [devel] Changed a dependence in scripts/pnglibconf.dfa 2011-06-17 21:17:16 -05:00