Commit Graph

435 Commits

Author SHA1 Message Date
John Bowler
e9d616321a [libpng16] Fixed Windows build issues, enabled ARM compilation. Various warnings issued
by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old GCCs.)
ARM support is enabled by default in zlib.props (unsupported by Microsoft) and
ARM compilation is made possible by deleting the check for x86. The test programs
cannot be run because they are not signed.
2012-12-20 22:48:58 -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
5c2d76fdef [libpng16] Use "FALL THROUGH" comment consistently in switch statements. 2012-12-09 19:39:30 -06:00
John Bowler
1f84bd7000 [libpng16] Change png_warning() to png_app_error() in pngwrite.c and comment
the fall-through condition.
2012-12-09 18:50:49 -06:00
John Bowler
70850fce0c [libpng16] Fixed error checking in the simplified write API (Olaf van der Spek) 2012-11-15 00:06:30 -06:00
John Bowler
ed3ca0e3eb [libpng16] Fixed the simplified API example programs and improved the error
message if the version field is not set.
2012-08-31 17:32:36 -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
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
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
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
14ca47b453 [libpng16] Improved performance of new do_check_palette_indexes() function
(only update the value when it actually increases, move test for whether
the check is wanted out of the function.
2012-06-06 13:30:30 -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
Glenn Randers-Pehrson
42ed02ed9a [libpng16] Reverted png_set_itxt(); it would not compile without warnings. 2012-03-16 23:17:27 -05:00
Glenn Randers-Pehrson
31d66245ea [libpng16] Added png_set_itxt() (work in progress) 2012-03-16 13:53:25 -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
Glenn Randers-Pehrson
945cb1f9be [libpng16] Issue a png_benign_error() instead of png_warning() about bad
palette index.
2012-03-10 08:48:04 -06:00
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
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
Glenn Randers-Pehrson
eeb1bb678d [libng16] Added palette-index checking while writing.
Relocated palette-index checking function from pngrutil.c to pngtrans.c
2012-03-02 22:10:15 -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
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
John Bowler
dee7577330 [libpng16] Added PNG_IMAGE_FLAG_FAST for the benefit of applications that
store intermediate files, or intermediate in-memory data, while processing
image data with the simplified API.  The option makes the files larger
but faster to write and read.  pngstest now uses this by default; this
can be disabled with the --slow option.
2012-03-01 18:55:54 -06:00
John Bowler
1c25b9b06b [libpng16] Fixed transparent pixel and 16-bit rgb tests in pngstest and removed
a spurious check in pngwrite.c
2012-02-29 10:49:28 -06:00
John Bowler
5bc90389bf [libpng16] Added color-map support to simplified API.
This is an initial version for review; the documentation has not yet been
updated.
2012-01-23 22:43:22 -06:00
John Bowler
04336ba10f [libpng16] Add palette support to the simplified APIs. This commit
changes some of the macro definitions in png.h, app code may need
corresponding changes.
2012-01-16 07:48:36 -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
John Bowler
d332c67da7 [libpng16] Start-up code size improvements, error handler flexibility.
These changes alter how the tricky allocation of the initial png_struct and
png_info structures are handled. png_info is now handled in pretty much the
same way as everything else, except that the allocations handle NULL return
silently.  png_struct is changed in a similar way on allocation and on
deallocation a 'safety' error handler is put in place (which should never
be required).  The error handler itself is changed to permit mismatches
in the application and libpng error buffer size; however, this means a
silent change to the API to return the jmp_buf if the size doesn't match
the size from the libpng compilation; libpng now allocates the memory and
this may fail.  Overall these changes result in slight code size
reductions; however, this is a reduction in code that is always executed
so is particularly valuable.  Overall on a 64-bit system the libpng DLL
decreases in code size by 1733 bytes.  pngerror.o increases in size by
about 465 bytes because of the new functionality.
2011-12-21 17:36:12 -06:00
Glenn Randers-Pehrson
13831bc06e [libpng16] Updated "last changed" dates 2011-12-21 08:28:28 -06:00
John Bowler
baeb6d1e92 [libpng16] Added ANSI-C (C90) headers; eliminated the use of FAR/far. 2011-11-26 18:21:02 -06:00
John Bowler
3706d730d1 [libpng15] Allow row_stride==0 to indicate default stride in simplified API 2011-11-21 10:28:06 -06:00
John Bowler
4fa96a42f7 [libpng15] Fixes for C++ compilation using g++ When libpng source is compiled
using g++. The compiler imposes C++ rules on the C source; thus it
    is desireable to make the source work with either C or C++ rules
    without throwing away useful error information.  This change adds
    png_voidcast to allow C semantic (void*) cases or the corresponding
    C++ static_cast operation, as appropriate.
2011-11-16 16:39:16 -06:00
John Bowler
18c5cfafeb [libpng15] Multiple transform bug fixes plus a work-round for double gamma
correction.
2011-11-16 14:26:34 -06:00
John Bowler
89c2f84287 [libpng15] Fix Windows builds, add pngstest to Visual Studio and OpenWatcom 2011-11-16 12:04:39 -06:00
Glenn Randers-Pehrson
4be12aa1e3 [libpng15] Updated commentary 2011-11-10 06:35:48 -06:00
John Bowler
e6fb691c49 [libpng15] Fixes to alpha swap on read, simplified write and filler add code 2011-11-08 21:35:16 -06:00
John Bowler
dd81915d5b [libpng15] Corrections to the PNG_FORMAT_ values and code cleanup. 2011-11-08 14:29:45 -06:00
John Bowler
3615d03e05 [libpng15] Fix PNG_SIMPLIFIED transformations,
adding alpha and reducing to 8-bit
2011-11-08 10:38:09 -06:00
Glenn Randers-Pehrson
efc4b69767 [libpng15] Fixed some typos in comments. 2011-11-07 23:31:34 -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
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