-
+#if 0
CHANGES - changes for libpng
-Version 0.2
+version 0.1 [March 29, 1995]
+ initial work-in-progress release
+
+version 0.2 [April 1, 1995]
added reader into png.h
fixed small problems in stub file
-Version 0.3
+version 0.3 [April 8, 1995]
added pull reader
split up pngwrite.c to several files
added pnglib.txt
fixed some bugs in writer
interfaced with zlib 0.5
added K&R support
- added check for 64 KB blocks for 16-bit machines
+ added check for 64 KB blocks for 16 bit machines
-Version 0.4
+version 0.4 [April 26, 1995]
cleaned up code and commented code
simplified time handling into png_time
created png_color_16 and png_color_8 to handle color needs
cleaned up zTXt reader and writer (using zlib's Reset functions)
split transformations into pngrtran.c and pngwtran.c
-Version 0.5
+version 0.5 [April 30, 1995]
interfaced with zlib 0.8
fixed many reading and writing bugs
saved using 3 spaces instead of tabs
-Version 0.6
+version 0.6 [May 1, 1995]
+ first beta release
added png_large_malloc() and png_large_free()
added png_size_t
cleaned up some compiler warnings
added png_start_read_image()
-Version 0.7
+version 0.7 [June 24, 1995]
cleaned up lots of bugs
finished dithering and other stuff
added test program
changed name from pnglib to libpng
-Version 0.71 [June, 1995]
+version 0.71 [June 26, 1995]
changed pngtest.png for zlib 0.93
fixed error in libpng.txt and example.c
-Version 0.8
+version 0.8 [August 20, 1995]
cleaned up some bugs
added png_set_filler()
split up pngstub.c into pngmem.c, pngio.c, and pngerror.c
cleaned up documentation
added callbacks for read/write and warning/error functions
-Version 0.89 [July, 1996]
+Version 0.89 [June 5, 1996]
Added new initialization API to make libpng work better with shared libs
we now have png_create_read_struct(), png_create_write_struct(),
png_create_info_struct(), png_destroy_read_struct(), and
New pngtest image also has interlacing and zTXt
Updated documentation to reflect new API
+Version 0.89c [June 17, 1996]
+ Bug fixes.
+
Version 0.90 [January, 1997]
Made CRC errors/warnings on critical and ancillary chunks configurable
libpng will use the zlib CRC routines by (compile-time) default
Added new pCAL chunk read/write support
Added experimental filter selection weighting (Greg Roelofs)
Removed old png_set_rgbx() and png_set_xrgb() functions that have been
- obsolete for about 2 years now (use png_set_filler() instead)
+ obsolete for about 2 years now (use png_set_filler() instead)
Added macros to read 16- and 32-bit ints directly from buffer, to be
used only on those systems that support it (namely PowerPC and 680x0)
With some testing, this may become the default for MACOS/PPC systems.
Version 1.0.3a [August 12, 1999]
Added check for PNG_READ_INTERLACE_SUPPORTED in pngread.c; issue a warning
- if an attempt is made to read an interlaced image when it's not supported.
+ if an attempt is made to read an interlaced image when it's not supported.
Added check if png_ptr->trans is defined before freeing it in pngread.c
Modified the Y2K statement to include versions back to version 0.71
Fixed a bug in the check for valid IHDR bit_depth/color_types in pngrutil.c
Replaced leading blanks with tab characters in makefile.hux
Changed "dworkin.wustl.edu" to "ccrc.wustl.edu" in various documents.
Changed (float)red and (float)green to (double)red, (double)green
- in png_set_rgb_to_gray() to avoid "promotion" problems in AIX.
+ in png_set_rgb_to_gray() to avoid "promotion" problems in AIX.
Fixed a bug in pngconf.h that omitted <stdio.h> when PNG_DEBUG==0 (K Bracey).
Reformatted libpng.3 and libpngpf.3 with proper fonts (script by J. vanZandt).
Updated documentation to refer to the PNG-1.2 specification.
Added new png_expand functions to scripts/pngdef.pas and pngos2.def
Added a demo read_user_transform_fn that examines the row filters in pngtest.c
-Version 1.0.4 [September 24, 1999]
+Version 1.0.4 [September 24, 1999, not distributed publicly]
Define PNG_ALWAYS_EXTERN in pngconf.h if __STDC__ is defined
Delete #define PNG_INTERNAL and include "png.h" from pngasmrd.h
Made several minor corrections to pngtest.c
Added a "png_check_version" function in png.c and pngtest.c that will generate
a helpful compiler error if an old png.h is found in the search path.
Changed type of png_user_transform_depth|channels from int to png_byte.
+ Added "Libpng is OSI Certified Open Source Software" statement to png.h
Version 1.0.4d [October 6, 1999]
Changed 0.45 to 0.45455 in png_set_sRGB()
Version 1.0.8beta1 [July 8, 2000]
Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks.
Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and
- pngwutil.c.
+ pngwutil.c.
Changed PNG_EXPORT_VAR to use PNG_IMPEXP, in pngconf.h.
Removed unused "#include <assert.h>" from png.c
Added WindowsCE support.
Version 1.0.8beta2 [July 10, 2000]
Added project files to the wince directory and made further revisions
- of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE.
+ of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE.
Version 1.0.8beta3 [July 11, 2000]
Only set the PNG_FLAG_FREE_TRNS or PNG_FREE_TRNS flag in png_handle_tRNS()
- for indexed-color input files to avoid potential double-freeing trans array
- under some unusual conditions; problem was introduced in version 1.0.6f.
+ for indexed-color input files to avoid potential double-freeing trans array
+ under some unusual conditions; problem was introduced in version 1.0.6f.
Further revisions to pngtest.c and files in the wince subdirectory.
Version 1.0.8beta4 [July 14, 2000]
Version 1.2.0beta4 [June 23, 2001]
Check for missing profile length field in iCCP chunk and free chunk_data
- in case of truncated iCCP chunk.
+ in case of truncated iCCP chunk.
Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
Bumped dll-number from 2 to 3 in makefile.cygwin
Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly
- if user attempts to run it on an 8-bit display.
+ if user attempts to run it on an 8-bit display.
Updated contrib/gregbook
Use png_malloc instead of png_zalloc to allocate palette in pngset.c
Updated makefile.ibmc
Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes
- of png_write_oFFS width and height from png_uint_32 to png_int_32.
+ of png_write_oFFS width and height from png_uint_32 to png_int_32.
Updated example.c
Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
Revised contrib/gregbook
Revised makefile.gcmmx
Revised pnggccrd.c to conditionally compile some thread-unsafe code only
- when PNG_THREAD_UNSAFE_OK is defined.
+ when PNG_THREAD_UNSAFE_OK is defined.
Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
- value exceeding 2^bit_depth-1
+ value exceeding 2^bit_depth-1
Revised makefile.sgi and makefile.sggcc
Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
Removed restriction that do_invert_mono only operate on 1-bit opaque files
Use png_malloc instead of png_zalloc to allocate the pallete.
Version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
- Fixed buffer overflow vulnerability in png_handle_tRNS()
- Fixed integer arithmetic overflow vulnerability in png_read_png().
+ Fixed buffer overflow vulnerability (CVE-2004-0597) in png_handle_tRNS().
+ Fixed NULL dereference vulnerability (CVE-2004-0598) in png_handle_iCCP().
+ Fixed integer overflow vulnerability (CVE-2004-0599) in png_read_png().
Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
duplicate chunk types to go undetected.
Fixed some timestamps in the -config version
Version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004]
Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED
- section of png.h where they were inadvertently placed in version rc3.
+ section of png.h where they were inadvertently placed in version rc3.
Version 1.2.6 and 1.0.16 [August 15, 2004]
Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1.
Version 1.4.0beta64 [June 24, 2009]
Eliminated PNG_LEGACY_SUPPORTED code.
Moved the various unknown chunk macro definitions outside of the
- PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
+ PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
Version 1.4.0beta65 [June 26, 2009]
Added a reference to the libpng license in each file.
Expanded manual paragraph about writing private chunks, particularly
the need to call png_set_keep_unknown_chunks() when writing them.
Avoid dereferencing NULL pointer possibly returned from
- png_create_write_struct() (Andrew Church).
+ png_create_write_struct() (Andrew Church).
Version 1.6.3beta05 [May 9, 2013]
Calculate our own zlib windowBits when decoding rather than trusting the
Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
pngset.c to avoid warnings about dead code.
Added "& 0xff" to many instances of expressions that are typecast
- to (png_byte), to avoid Coverity gripes.
+ to (png_byte), to avoid Coverity warnings.
Version 1.6.17beta02 [February 7, 2015]
Work around one more Coverity-scan dead-code warning.
Version 1.6.17 [March 26, 2015]
No changes.
+Version 1.6.18beta01 [April 1, 2015]
+ Removed PNG_SET_CHUNK_[CACHE|MALLOC]_LIMIT_SUPPORTED macros. They
+ have been combined with PNG_SET_USER_LIMITS_SUPPORTED (resolves
+ bug report by Andrew Church).
+ Fixed rgb_to_gray checks and added tRNS checks to pngvalid.c. This
+ fixes some arithmetic errors that caused some tests to fail on
+ some 32-bit platforms (Bug reports by Peter Breitenlohner [i686]
+ and Petr Gajdos [i586]).
+
+Version 1.6.18beta02 [April 26, 2015]
+ Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler
+ (Bug report by Viktor Szaka'ts).
+
+Version 1.6.18beta03 [May 6, 2015]
+ Replaced "unexpected" with an integer (0xabadca11) in pngset.c
+ where a long was expected, to avoid a compiler warning when PNG_DEBUG > 1.
+ Added contrib/examples/simpleover.c, to demonstrate how to handle
+ alpha compositing of multiple images, using the "simplified API"
+ and an example PNG generation tool, contrib/examples/genpng.c
+ (John Bowler).
+
+Version 1.6.18beta04 [May 20, 2015]
+ 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 (John Bowler).
+ Avoid Coverity issue 80858 (REVERSE NULL) in pngtest.c PNG_DEBUG builds.
+ Avoid a harmless potential integer overflow in png_XYZ_from_xy() (Bug
+ report from Christopher Ferris).
+
+Version 1.6.18beta05 [May 31, 2015]
+ Backport 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.
+ Changed png_voidcast(), etc., to voidcast(), etc., in contrib/tools/pngfix.c
+ to avoid confusion with the libpng private macros.
+ Fixed old cut&paste bug in the weighted filter selection code in
+ pngwutil.c, introduced in libpng-0.95, March 1997.
+
+Version 1.6.18beta06 [June 1, 2015]
+ 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.
+
+Version 1.6.18beta07 [June 6, 2015]
+ 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 (because it does nothing and cannot do anything) was apparently
+ never tested (John Bowler).
+ 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 (John Bowler).
+ Fixed NO_WRITE_FILTER and -Wconversion build breaks (John Bowler).
+ Fix g++ build breaks (John Bowler).
+ Quieted some Coverity issues in pngfix.c, png-fix-itxt.c, pngvalid.c,
+ pngstest.c, and pngimage.c. Most seem harmless, but png-fix-itxt
+ would only work with iTXt chunks with length 255 or less.
+ Added #ifdef's to contrib/examples programs so people don't try
+ to compile them without the minimum required support enabled
+ (suggested by Flavio Medeiros).
+
+Version 1.6.18beta08 [June 30, 2015]
+ Eliminated the final two Coverity defects (insecure temporary file
+ handling in contrib/libtests/pngstest.c; possible overflow of
+ unsigned char in contrib/tools/png-fix-itxt.c). To use the "secure"
+ file handling, define PNG_USE_MKSTEMP, otherwise "tmpfile()" will
+ be used.
+ Removed some unused WEIGHTED_FILTER macros from png.h and pngstruct.h
+
+Version 1.6.18beta09 [July 5, 2015]
+ Removed some useless typecasts from contrib/tools/png-fix-itxt.c
+ Fixed a new signed-unsigned comparison in pngrtran.c (Max Stepin).
+ Replaced arbitrary use of 'extern' with #define PNG_LINKAGE_*. To
+ preserve API compatibility, the new defines all default to "extern"
+ (requested by Jan Nijtmans).
+
+Version 1.6.18rc01 [July 9, 2015]
+ Belatedly added Mans Rullgard and James Yu to the list of Contributing
+ Authors.
+
+Version 1.6.18rc02 [July 12, 2015]
+ Restored unused FILTER_HEURISTIC macros removed at libpng-1.6.18beta08
+ to png.h to avoid compatibility warnings.
+
+Version 1.6.18rc03 [July 15, 2015]
+ Minor changes to the man page
+
+Version 1.6.18 [July 23, 2015]
+ No changes.
+
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Glenn R-P
+#endif
projects / reactos.git / blobdiff