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5476 lines
277 KiB
Plaintext
5476 lines
277 KiB
Plaintext
#if 0
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CHANGES - changes for libpng
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version 0.1 [March 29, 1995]
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initial work-in-progress release
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version 0.2 [April 1, 1995]
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added reader into png.h
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fixed small problems in stub file
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version 0.3 [April 8, 1995]
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added pull reader
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split up pngwrite.c to several files
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added pnglib.txt
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added example.c
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cleaned up writer, adding a few new transformations
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fixed some bugs in writer
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interfaced with zlib 0.5
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added K&R support
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added check for 64 KB blocks for 16 bit machines
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version 0.4 [April 26, 1995]
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cleaned up code and commented code
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simplified time handling into png_time
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created png_color_16 and png_color_8 to handle color needs
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cleaned up color type defines
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fixed various bugs
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made various names more consistent
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interfaced with zlib 0.71
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cleaned up zTXt reader and writer (using zlib's Reset functions)
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split transformations into pngrtran.c and pngwtran.c
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version 0.5 [April 30, 1995]
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interfaced with zlib 0.8
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fixed many reading and writing bugs
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saved using 3 spaces instead of tabs
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version 0.6 [May 1, 1995]
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first beta release
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added png_large_malloc() and png_large_free()
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added png_size_t
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cleaned up some compiler warnings
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added png_start_read_image()
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version 0.7 [June 24, 1995]
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cleaned up lots of bugs
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finished dithering and other stuff
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added test program
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changed name from pnglib to libpng
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version 0.71 [June 26, 1995]
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changed pngtest.png for zlib 0.93
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fixed error in libpng.txt and example.c
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version 0.8 [August 20, 1995]
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cleaned up some bugs
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added png_set_filler()
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split up pngstub.c into pngmem.c, pngio.c, and pngerror.c
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added #define's to remove unwanted code
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moved png_info_init() to png.c
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added old_size into png_realloc()
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added functions to manually set filtering and compression info
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changed compression parameters based on image type
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optimized filter selection code
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added version info
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changed external functions passing floats to doubles (k&r problems?)
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put all the configurable stuff in pngconf.h
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enabled png_set_shift to work with paletted images on read
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added png_read_update_info() - updates info structure with transformations
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Version 0.81 [August, 1995]
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incorporated Tim Wegner's medium model code (thanks, Tim)
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Version 0.82 [September, 1995]
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[unspecified changes]
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Version 0.85 [December, 1995]
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added more medium model code (almost everything's a far)
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added i/o, error, and memory callback functions
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fixed some bugs (16-bit, 4-bit interlaced, etc.)
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added first run progressive reader (barely tested)
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Version 0.86 [January, 1996]
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fixed bugs
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improved documentation
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Version 0.87 [January, 1996]
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fixed medium model bugs
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fixed other bugs introduced in 0.85 and 0.86
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added some minor documentation
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Version 0.88 [January, 1996]
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fixed progressive bugs
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replaced tabs with spaces
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cleaned up documentation
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added callbacks for read/write and warning/error functions
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Version 0.89 [July, 1996]
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Added new initialization API to make libpng work better with shared libs
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we now have png_create_read_struct(), png_create_write_struct(),
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png_create_info_struct(), png_destroy_read_struct(), and
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png_destroy_write_struct() instead of the separate calls to
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malloc and png_read_init(), png_info_init(), and png_write_init()
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Changed warning/error callback functions to fix bug - this means you
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should use the new initialization API if you were using the old
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png_set_message_fn() calls, and that the old API no longer exists
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so that people are aware that they need to change their code
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Changed filter selection API to allow selection of multiple filters
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since it didn't work in previous versions of libpng anyways
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Optimized filter selection code
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Fixed png_set_background() to allow using an arbitrary RGB color for
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paletted images
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Fixed gamma and background correction for paletted images, so
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png_correct_palette is not needed unless you are correcting an
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external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED
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in pngconf.h) - if nobody uses this, it may disappear in the future.
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Fixed bug with Borland 64K memory allocation (Alexander Lehmann)
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Fixed bug in interlace handling (Smarasderagd, I think)
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Added more error checking for writing and image to reduce invalid files
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Separated read and write functions so that they won't both be linked
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into a binary when only reading or writing functionality is used
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New pngtest image also has interlacing and zTXt
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Updated documentation to reflect new API
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Version 0.90 [January, 1997]
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Made CRC errors/warnings on critical and ancillary chunks configurable
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libpng will use the zlib CRC routines by (compile-time) default
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Changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner)
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Added external C++ wrapper statements to png.h (Gilles Dauphin)
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Allow PNG file to be read when some or all of file signature has already
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been read from the beginning of the stream. ****This affects the size
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of info_struct and invalidates all programs that use a shared libpng****
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Fixed png_filler() declarations
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Fixed? background color conversions
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Fixed order of error function pointers to match documentation
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Current chunk name is now available in png_struct to reduce the number
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of nearly identical error messages (will simplify multi-lingual
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support when available)
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Try to get ready for unknown-chunk callback functions:
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- previously read critical chunks are flagged, so the chunk handling
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routines can determine if the chunk is in the right place
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- all chunk handling routines have the same prototypes, so we will
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be able to handle all chunks via a callback mechanism
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Try to fix Linux "setjmp" buffer size problems
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Removed png_large_malloc, png_large_free, and png_realloc functions.
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Version 0.95 [March, 1997]
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Fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never
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Fixed bug in PNG file signature compares when start != 0
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Changed parameter type of png_set_filler(...filler...) from png_byte
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to png_uint_32
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Added test for MACOS to ensure that both math.h and fp.h are not #included
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Added macros for libpng to be compiled as a Windows DLL (Andreas Kupries)
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Added "packswap" transformation, which changes the endianness of
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packed-pixel bytes (Kevin Bracey)
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Added "strip_alpha" transformation, which removes the alpha channel of
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input images without using it (not necessarily a good idea)
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Added "swap_alpha" transformation, which puts the alpha channel in front
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of the color bytes instead of after
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Removed all implicit variable tests which assume NULL == 0 (I think)
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Changed several variables to "png_size_t" to show 16/32-bit limitations
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Added new pCAL chunk read/write support
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Added experimental filter selection weighting (Greg Roelofs)
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Removed old png_set_rgbx() and png_set_xrgb() functions that have been
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obsolete for about 2 years now (use png_set_filler() instead)
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Added macros to read 16- and 32-bit ints directly from buffer, to be
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used only on those systems that support it (namely PowerPC and 680x0)
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With some testing, this may become the default for MACOS/PPC systems.
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Only calculate CRC on data if we are going to use it
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Added macros for zTXt compression type PNG_zTXt_COMPRESSION_???
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Added macros for simple libpng debugging output selectable at compile time
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Removed PNG_READ_END_MODE in progressive reader (Smarasderagd)
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More description of info_struct in libpng.txt and png.h
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More instructions in example.c
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More chunk types tested in pngtest.c
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Renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be
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png_set_<chunk>. We now have corresponding png_get_<chunk>
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functions in pngget.c to get information in info_ptr. This isolates
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the application from the internal organization of png_info_struct
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(good for shared library implementations).
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Version 0.96 [May, 1997]
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Fixed serious bug with < 8bpp images introduced in 0.95
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Fixed 256-color transparency bug (Greg Roelofs)
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Fixed up documentation (Greg Roelofs, Laszlo Nyul)
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Fixed "error" in pngconf.h for Linux setjmp() behavior
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Fixed DOS medium model support (Tim Wegner)
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Fixed png_check_keyword() for case with error in static string text
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Added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul)
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Added typecasts to quiet compiler errors
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Added more debugging info
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Version 0.97 [January, 1998]
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Removed PNG_USE_OWN_CRC capability
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Relocated png_set_crc_action from pngrutil.c to pngrtran.c
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Fixed typecasts of "new_key", etc. (Andreas Dilger)
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Added RFC 1152 [sic] date support
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Fixed bug in gamma handling of 4-bit grayscale
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Added 2-bit grayscale gamma handling (Glenn R-P)
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Added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P)
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Minor corrections in libpng.txt
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Added simple sRGB support (Glenn R-P)
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Easier conditional compiling, e.g.,
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define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
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all configurable options can be selected from command-line instead
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of having to edit pngconf.h (Glenn R-P)
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Fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P)
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Added more conditions for png_do_background, to avoid changing
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black pixels to background when a background is supplied and
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no pixels are transparent
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Repaired PNG_NO_STDIO behavior
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Tested NODIV support and made it default behavior (Greg Roelofs)
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Added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler)
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Regularized version numbering scheme and bumped shared-library major
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version number to 2 to avoid problems with libpng 0.89 apps
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(Greg Roelofs)
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Version 0.98 [January, 1998]
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Cleaned up some typos in libpng.txt and in code documentation
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Fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler)
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Cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c
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Changed recommendation about file_gamma for PC images to .51 from .45,
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in example.c and libpng.txt, added comments to distinguish between
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screen_gamma, viewing_gamma, and display_gamma.
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Changed all references to RFC1152 to read RFC1123 and changed the
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PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED
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Added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent)
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Changed srgb_intent from png_byte to int to avoid compiler bugs
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Version 0.99 [January 30, 1998]
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Free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler)
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Fixed a longstanding "packswap" bug in pngtrans.c
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Fixed some inconsistencies in pngconf.h that prevented compiling with
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PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined
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Fixed some typos and made other minor rearrangement of libpng.txt (Andreas)
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Changed recommendation about file_gamma for PC images to .50 from .51 in
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example.c and libpng.txt, and changed file_gamma for sRGB images to .45
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Added a number of functions to access information from the png structure
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png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit)
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Added TARGET_MACOS similar to zlib-1.0.8
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Define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined
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Added type casting to all png_malloc() function calls
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Version 0.99a [January 31, 1998]
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Added type casts and parentheses to all returns that return a value.(Tim W.)
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Version 0.99b [February 4, 1998]
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Added type cast png_uint_32 on malloc function calls where needed.
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Changed type of num_hist from png_uint_32 to int (same as num_palette).
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Added checks for rowbytes overflow, in case png_size_t is less than 32 bits.
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Renamed makefile.elf to makefile.lnx.
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Version 0.99c [February 7, 1998]
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More type casting. Removed erroneous overflow test in pngmem.c.
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Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes.
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Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5.
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Version 0.99d [February 11, 1998]
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Renamed "far_to_near()" "png_far_to_near()"
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Revised libpng.3
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Version 99c "buffered" operations didn't work as intended. Replaced them
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with png_memcpy_check() and png_memset_check().
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Added many "if (png_ptr == NULL) return" to quell compiler warnings about
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unused png_ptr, mostly in pngget.c and pngset.c.
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Check for overlength tRNS chunk present when indexed-color PLTE is read.
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Cleaned up spelling errors in libpng.3/libpng.txt
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Corrected a problem with png_get_tRNS() which returned undefined trans array
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Version 0.99e [February 28, 1998]
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Corrected png_get_tRNS() again.
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Add parentheses for easier reading of pngget.c, fixed "||" should be "&&".
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Touched up example.c to make more of it compileable, although the entire
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file still can't be compiled (Willem van Schaik)
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Fixed a bug in png_do_shift() (Bryan Tsai)
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Added a space in png.h prototype for png_write_chunk_start()
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Replaced pngtest.png with one created with zlib 1.1.1
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Changed pngtest to report PASS even when file size is different (Jean-loup G.)
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Corrected some logic errors in png_do_invert_alpha() (Chris Patterson)
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Version 0.99f [March 5, 1998]
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Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey)
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Moved makefiles into a "scripts" directory, and added INSTALL instruction file
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Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok)
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Added pointers to "note on libpng versions" in makefile.lnx and README
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Added row callback feature when reading and writing nonprogressive rows
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and added a test of this feature in pngtest.c
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Added user transform callbacks, with test of the feature in pngtest.c
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Version 0.99g [March 6, 1998, morning]
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Minor changes to pngtest.c to suppress compiler warnings.
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Removed "beta" language from documentation.
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Version 0.99h [March 6, 1998, evening]
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Minor changes to previous minor changes to pngtest.c
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Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED
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and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro
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Added user transform capability
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Version 1.00 [March 7, 1998]
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Changed several typedefs in pngrutil.c
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Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik)
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Replaced "while(1)" with "for(;;)"
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Added PNGARG() to prototypes in pngtest.c and removed some prototypes
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Updated some of the makefiles (Tom Lane)
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Changed some typedefs (s_start, etc.) in pngrutil.c
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Fixed dimensions of "short_months" array in pngwrite.c
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Replaced ansi2knr.c with the one from jpeg-v6
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Version 1.0.0 [March 8, 1998]
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Changed name from 1.00 to 1.0.0 (Adam Costello)
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Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert)
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Version 1.0.0a [March 9, 1998]
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Fixed three bugs in pngrtran.c to make gamma+background handling consistent
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(Greg Roelofs)
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Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz
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for major, minor, and bugfix releases. This is 10001. (Adam Costello,
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Tom Lane)
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Make months range from 1-12 in png_convert_to_rfc1123
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Version 1.0.0b [March 13, 1998]
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Quieted compiler complaints about two empty "for" loops in pngrutil.c
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Minor changes to makefile.s2x
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Removed #ifdef/#endif around a png_free() in pngread.c
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Version 1.0.1 [March 14, 1998]
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Changed makefile.s2x to reduce security risk of using a relative pathname
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Fixed some typos in the documentation (Greg).
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Fixed a problem with value of "channels" returned by png_read_update_info()
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Version 1.0.1a [April 21, 1998]
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Optimized Paeth calculations by replacing abs() function calls with intrinsics
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plus other loop optimizations. Improves avg decoding speed by about 20%.
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Commented out i386istic "align" compiler flags in makefile.lnx.
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Reduced the default warning level in some makefiles, to make them consistent.
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Removed references to IJG and JPEG in the ansi2knr.c copyright statement.
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Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation.
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Added grayscale and 16-bit capability to png_do_read_filler().
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Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes
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too large when writing an image with bit_depth < 8 (Bob Dellaca).
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Corrected some bugs in the experimental weighted filtering heuristics.
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Moved a misplaced pngrutil code block that truncates tRNS if it has more
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than num_palette entries -- test was done before num_palette was defined.
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Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins).
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Changed compiler flags in makefile.wat for better optimization
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(Pawel Mrochen).
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Version 1.0.1b [May 2, 1998]
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Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg).
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Relocated the png_composite macros from pngrtran.c to png.h (Greg).
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Added makefile.sco (contributed by Mike Hopkirk).
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Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a.
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Fixed a bug in pngrtran.c that would set channels=5 under some circumstances.
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More work on the Paeth-filtering, achieving imperceptible speedup
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(A Kleinert).
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More work on loop optimization which may help when compiled with C++
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compilers.
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Added warnings when people try to use transforms they've defined out.
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Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran.
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Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg)
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Version 1.0.1c [May 11, 1998]
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Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for
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filler bytes should have been 0xff instead of 0xf.
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Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images.
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Moved PNG_WRITE_WEIGHTED_FILTER_SUPPORTED and PNG_WRITE_FLUSH_SUPPORTED
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out of the PNG_WRITE_TRANSFORMS_NOT_SUPPORTED block of pngconf.h
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Added "PNG_NO_WRITE_TRANSFORMS" etc., as alternatives for *_NOT_SUPPORTED,
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for consistency, in pngconf.h
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Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier
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to remove unwanted capabilities via the compile line
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Made some corrections to grammar (which, it's) in documentation (Greg).
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Corrected example.c, use of row_pointers in png_write_image().
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Version 1.0.1d [May 24, 1998]
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Corrected several statements that used side effects illegally in pngrutil.c
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and pngtrans.c, that were introduced in version 1.0.1b
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Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert)
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More corrections to example.c, use of row_pointers in png_write_image()
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and png_read_rows().
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Added pngdll.mak and pngdef.pas to scripts directory, contributed by
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Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5
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Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.)
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Changed several loops from count-down to count-up, for consistency.
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Version 1.0.1e [June 6, 1998]
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Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and
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added warnings when people try to set png_read_fn and png_write_fn in
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the same structure.
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Added a test such that png_do_gamma will be done when num_trans==0
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for truecolor images that have defined a background. This corrects an
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error that was introduced in libpng-0.90 that can cause gamma processing
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to be skipped.
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Added tests in png.h to include "trans" and "trans_values" in structures
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when PNG_READ_BACKGROUND_SUPPORTED or PNG_READ_EXPAND_SUPPORTED is defined.
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Add png_free(png_ptr->time_buffer) in png_destroy_read_struct()
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Moved png_convert_to_rfc_1123() from pngwrite.c to png.c
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Added capability for user-provided malloc_fn() and free_fn() functions,
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and revised pngtest.c to demonstrate their use, replacing the
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PNGTEST_DEBUG_MEM feature.
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Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner).
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Version 1.0.2 [June 14, 1998]
|
|
Fixed two bugs in makefile.bor .
|
|
|
|
Version 1.0.2a [December 30, 1998]
|
|
Replaced and extended code that was removed from png_set_filler() in 1.0.1a.
|
|
Fixed a bug in png_do_filler() that made it fail to write filler bytes in
|
|
the left-most pixel of each row (Kevin Bracey).
|
|
Changed "static pngcharp tIME_string" to "static char tIME_string[30]"
|
|
in pngtest.c (Duncan Simpson).
|
|
Fixed a bug in pngtest.c that caused pngtest to try to write a tIME chunk
|
|
even when no tIME chunk was present in the source file.
|
|
Fixed a problem in pngrutil.c: gray_to_rgb didn't always work with 16-bit.
|
|
Fixed a problem in png_read_push_finish_row(), which would not skip some
|
|
passes that it should skip, for images that are less than 3 pixels high.
|
|
Interchanged the order of calls to png_do_swap() and png_do_shift()
|
|
in pngwtran.c (John Cromer).
|
|
Added #ifdef PNG_DEBUG/#endif surrounding use of PNG_DEBUG in png.h .
|
|
Changed "bad adaptive filter type" from error to warning in pngrutil.c .
|
|
Fixed a documentation error about default filtering with 8-bit indexed-color.
|
|
Separated the PNG_NO_STDIO macro into PNG_NO_STDIO and PNG_NO_CONSOLE_IO
|
|
(L. Peter Deutsch).
|
|
Added png_set_rgb_to_gray() and png_get_rgb_to_gray_status() functions.
|
|
Added png_get_copyright() and png_get_header_version() functions.
|
|
Revised comments on png_set_progressive_read_fn() in libpng.txt and example.c
|
|
Added information about debugging in libpng.txt and libpng.3 .
|
|
Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and
|
|
makefile.sco.
|
|
Removed lines after Dynamic Dependencies" in makefile.aco .
|
|
Revised makefile.dec to make a shared library (Jeremie Petit).
|
|
Removed trailing blanks from all files.
|
|
|
|
Version 1.0.2a [January 6, 1999]
|
|
Removed misplaced #endif and #ifdef PNG_NO_EXTERN near the end of png.h
|
|
Added "if" tests to silence complaints about unused png_ptr in png.h and png.c
|
|
Changed "check_if_png" function in example.c to return true (nonzero) if PNG.
|
|
Changed libpng.txt to demonstrate png_sig_cmp() instead of png_check_sig()
|
|
which is obsolete.
|
|
|
|
Version 1.0.3 [January 14, 1999]
|
|
Added makefile.hux, for Hewlett Packard HPUX 10.20 and 11.00 (Jim Rice)
|
|
Added a statement of Y2K compliance in png.h, libpng.3, and Y2KINFO.
|
|
|
|
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.
|
|
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
|
|
Modified makefile.wat (added -zp8 flag, ".symbolic", changed some comments)
|
|
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.
|
|
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.
|
|
Removed ansi2knr.c and left pointers to the latest source for ansi2knr.c
|
|
in makefile.knr, INSTALL, and README (L. Peter Deutsch)
|
|
Fixed bugs in calculation of the length of rowbytes when adding alpha
|
|
channels to 16-bit images, in pngrtran.c (Chris Nokleberg)
|
|
Added function png_set_user_transform_info() to store user_transform_ptr,
|
|
user_depth, and user_channels into the png_struct, and a function
|
|
png_get_user_transform_ptr() to retrieve the pointer (Chris Nokleberg)
|
|
Added function png_set_empty_plte_permitted() to make libpng useable
|
|
in MNG applications.
|
|
Corrected the typedef for png_free_ptr in png.h (Jesse Jones).
|
|
Correct gamma with srgb is 45455 instead of 45000 in pngrutil.c, to be
|
|
consistent with PNG-1.2, and allow variance of 500 before complaining.
|
|
Added assembler code contributed by Intel in file pngvcrd.c and modified
|
|
makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation,
|
|
Gilles Vollant)
|
|
Changed "ln -s -f" to "ln -f -s" in the makefiles to make Solaris happy.
|
|
Added some aliases for png_set_expand() in pngrtran.c, namely
|
|
png_set_expand_PLTE(), png_set_expand_depth(), and png_set_expand_tRNS()
|
|
(Greg Roelofs, in "PNG: The Definitive Guide").
|
|
Added makefile.beo for BEOS on X86, contributed by Sander Stok.
|
|
|
|
Version 1.0.3b [August 26, 1999]
|
|
Replaced 2147483647L several places with PNG_MAX_UINT macro, defined in png.h
|
|
Changed leading blanks to tabs in all makefiles.
|
|
Define PNG_USE_PNGVCRD in makefile.w32, to get MMX assembler code.
|
|
Made alternate versions of png_set_expand() in pngrtran.c, namely
|
|
png_set_gray_1_2_4_to_8, png_set_palette_to_rgb, and png_set_tRNS_to_alpha
|
|
(Greg Roelofs, in "PNG: The Definitive Guide"). Deleted the 1.0.3a aliases.
|
|
Relocated start of 'extern "C"' block in png.h so it doesn't include pngconf.h
|
|
Revised calculation of num_blocks in pngmem.c to avoid a potentially
|
|
negative shift distance, whose results are undefined in the C language.
|
|
Added a check in pngset.c to prevent writing multiple tIME chunks.
|
|
Added a check in pngwrite.c to detect invalid small window_bits sizes.
|
|
|
|
Version 1.0.3d [September 4, 1999]
|
|
Fixed type casting of igamma in pngrutil.c
|
|
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, 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
|
|
Renamed the makefiles with longer but more user friendly extensions.
|
|
Copied the PNG copyright and license to a separate LICENSE file.
|
|
Revised documentation, png.h, and example.c to remove reference to
|
|
"viewing_gamma" which no longer appears in the PNG specification.
|
|
Revised pngvcrd.c to use MMX code for interlacing only on the final pass.
|
|
Updated pngvcrd.c to use the faster C filter algorithms from libpng-1.0.1a
|
|
Split makefile.win32vc into two versions, makefile.vcawin32 (uses MMX
|
|
assembler code) and makefile.vcwin32 (doesn't).
|
|
Added a CPU timing report to pngtest.c (enabled by defining PNGTEST_TIMING)
|
|
Added a copy of pngnow.png to the distribution.
|
|
|
|
Version 1.0.4a [September 25, 1999]
|
|
Increase max_pixel_depth in pngrutil.c if a user transform needs it.
|
|
Changed several division operations to right-shifts in pngvcrd.c
|
|
|
|
Version 1.0.4b [September 30, 1999]
|
|
Added parentheses in line 3732 of pngvcrd.c
|
|
Added a comment in makefile.linux warning about buggy -O3 in pgcc 2.95.1
|
|
|
|
Version 1.0.4c [October 1, 1999]
|
|
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()
|
|
Removed unused PLTE entries from pngnow.png
|
|
Re-enabled some parts of pngvcrd.c (png_combine_row) that work properly.
|
|
|
|
Version 1.0.4e [October 10, 1999]
|
|
Fixed sign error in pngvcrd.c (Greg Roelofs)
|
|
Replaced some instances of memcpy with simple assignments in pngvcrd (GR-P)
|
|
|
|
Version 1.0.4f [October 15, 1999]
|
|
Surrounded example.c code with #if 0 .. #endif to prevent people from
|
|
inadvertently trying to compile it.
|
|
Changed png_get_header_version() from a function to a macro in png.h
|
|
Added type casting mostly in pngrtran.c and pngwtran.c
|
|
Removed some pointless "ptr = NULL" in pngmem.c
|
|
Added a "contrib" directory containing the source code from Greg's book.
|
|
|
|
Version 1.0.5 [October 15, 1999]
|
|
Minor editing of the INSTALL and README files.
|
|
|
|
Version 1.0.5a [October 23, 1999]
|
|
Added contrib/pngsuite and contrib/pngminus (Willem van Schaik)
|
|
Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans)
|
|
Further optimization and bugfix of pngvcrd.c
|
|
Revised pngset.c so that it does not allocate or free memory in the user's
|
|
text_ptr structure. Instead, it makes its own copy.
|
|
Created separate write_end_info_struct in pngtest.c for a more severe test.
|
|
Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak.
|
|
|
|
Version 1.0.5b [November 23, 1999]
|
|
Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and
|
|
PNG_FLAG_WROTE_tIME from flags to mode.
|
|
Added png_write_info_before_PLTE() function.
|
|
Fixed some typecasting in contrib/gregbook/*.c
|
|
Updated scripts/makevms.com and added makevms.com to contrib/gregbook
|
|
and contrib/pngminus (Martin Zinser)
|
|
|
|
Version 1.0.5c [November 26, 1999]
|
|
Moved png_get_header_version from png.h to png.c, to accommodate ansi2knr.
|
|
Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to
|
|
accommodate making DLL's: Moved usr_png_ver from global variable to function
|
|
png_get_header_ver() in png.c. Moved png_sig to png_sig_bytes in png.c and
|
|
eliminated use of png_sig in pngwutil.c. Moved the various png_CHNK arrays
|
|
into pngtypes.h. Eliminated use of global png_pass arrays. Declared the
|
|
png_CHNK and png_pass arrays to be "const". Made the global arrays
|
|
available to applications (although none are used in libpng itself) when
|
|
PNG_NO_GLOBAL_ARRAYS is not defined or when PNG_GLOBAL_ARRAYS is defined.
|
|
Removed some extraneous "-I" from contrib/pngminus/makefile.std
|
|
Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2.
|
|
Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3
|
|
|
|
Version 1.0.5d [November 29, 1999]
|
|
Add type cast (png_const_charp) two places in png.c
|
|
Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays.
|
|
Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available
|
|
to applications a macro "PNG_USE_LOCAL_ARRAYS".
|
|
comment out (with #ifdef) all the new declarations when
|
|
PNG_USE_GLOBAL_ARRAYS is defined.
|
|
Added PNG_EXPORT_VAR macro to accommodate making DLL's.
|
|
|
|
Version 1.0.5e [November 30, 1999]
|
|
Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text
|
|
structure; refactored the inflate/deflate support to make adding new chunks
|
|
with trailing compressed parts easier in the future, and added new functions
|
|
png_free_iCCP, png_free_pCAL, png_free_sPLT, png_free_text, png_get_iCCP,
|
|
png_get_spalettes, png_set_iCCP, png_set_spalettes (Eric S. Raymond).
|
|
NOTE: Applications that write text chunks MUST define png_text->lang
|
|
before calling png_set_text(). It must be set to NULL if you want to
|
|
write tEXt or zTXt chunks. If you want your application to be able to
|
|
run with older versions of libpng, use
|
|
|
|
#ifdef PNG_iTXt_SUPPORTED
|
|
png_text[i].lang = NULL;
|
|
#endif
|
|
|
|
Changed png_get_oFFs() and png_set_oFFs() to use signed rather than unsigned
|
|
offsets (Eric S. Raymond).
|
|
Combined PNG_READ_cHNK_SUPPORTED and PNG_WRITE_cHNK_SUPPORTED macros into
|
|
PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED
|
|
macros, leaving the separate macros also available.
|
|
Removed comments on #endifs at the end of many short, non-nested #if-blocks.
|
|
|
|
Version 1.0.5f [December 6, 1999]
|
|
Changed makefile.solaris to issue a warning about potential problems when
|
|
the ucb "ld" is in the path ahead of the ccs "ld".
|
|
Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3.
|
|
Added sCAL chunk support (Eric S. Raymond).
|
|
|
|
Version 1.0.5g [December 7, 1999]
|
|
Fixed "png_free_spallettes" typo in png.h
|
|
Added code to handle new chunks in pngpread.c
|
|
Moved PNG_CHNK string macro definitions outside of PNG_NO_EXTERN block
|
|
Added "translated_key" to png_text structure and png_write_iTXt().
|
|
Added code in pngwrite.c to work around a newly discovered zlib bug.
|
|
|
|
Version 1.0.5h [December 10, 1999]
|
|
NOTE: regarding the note for version 1.0.5e, the following must also
|
|
be included in your code:
|
|
png_text[i].translated_key = NULL;
|
|
Unknown chunk handling is now supported.
|
|
Option to eliminate all floating point support was added. Some new
|
|
fixed-point functions such as png_set_gAMA_fixed() were added.
|
|
Expanded tabs and removed trailing blanks in source files.
|
|
|
|
Version 1.0.5i [December 13, 1999]
|
|
Added some type casts to silence compiler warnings.
|
|
Renamed "png_free_spalette" to "png_free_spalettes" for consistency.
|
|
Removed leading blanks from a #define in pngvcrd.c
|
|
Added some parameters to the new png_set_keep_unknown_chunks() function.
|
|
Added a test for up->location != 0 in the first instance of writing
|
|
unknown chunks in pngwrite.c
|
|
Changed "num" to "i" in png_free_spalettes() and png_free_unknowns() to
|
|
prevent recursion.
|
|
Added png_free_hIST() function.
|
|
Various patches to fix bugs in the sCAL and integer cHRM processing,
|
|
and to add some convenience macros for use with sCAL.
|
|
|
|
Version 1.0.5j [December 21, 1999]
|
|
Changed "unit" parameter of png_write_sCAL from png_byte to int, to work
|
|
around buggy compilers.
|
|
Added new type "png_fixed_point" for integers that hold float*100000 values
|
|
Restored backward compatibility of tEXt/zTXt chunk processing:
|
|
Restored the first four members of png_text to the same order as v.1.0.5d.
|
|
Added members "lang_key" and "itxt_length" to png_text struct. Set
|
|
text_length=0 when "text" contains iTXt data. Use the "compression"
|
|
member to distinguish among tEXt/zTXt/iTXt types. Added
|
|
PNG_ITXT_COMPRESSION_NONE (1) and PNG_ITXT_COMPRESSION_zTXt(2) macros.
|
|
The "Note" above, about backward incompatibility of libpng-1.0.5e, no
|
|
longer applies.
|
|
Fixed png_read|write_iTXt() to read|write parameters in the right order,
|
|
and to write the iTXt chunk after IDAT if it appears in the end_ptr.
|
|
Added pnggccrd.c, version of pngvcrd.c Intel assembler for gcc (Greg Roelofs)
|
|
Reversed the order of trying to write floating-point and fixed-point gAMA.
|
|
|
|
Version 1.0.5k [December 27, 1999]
|
|
Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))"
|
|
Added png_handle_as_unknown() function (Glenn)
|
|
Added png_free_chunk_list() function and chunk_list and num_chunk_list members
|
|
of png_ptr.
|
|
Eliminated erroneous warnings about multiple sPLT chunks and sPLT-after-PLTE.
|
|
Fixed a libpng-1.0.5h bug in pngrutil.c that was issuing erroneous warnings
|
|
about ignoring incorrect gAMA with sRGB (gAMA was in fact not ignored)
|
|
Added png_free_tRNS(); png_set_tRNS() now malloc's its own trans array (ESR).
|
|
Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is.
|
|
Changed type of proflen from png_int_32 to png_uint_32 in png_get_iCCP().
|
|
|
|
Version 1.0.5l [January 1, 2000]
|
|
Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr()
|
|
for setting a callback function to handle unknown chunks and for
|
|
retrieving the associated user pointer (Glenn).
|
|
|
|
Version 1.0.5m [January 7, 2000]
|
|
Added high-level functions png_read_png(), png_write_png(), png_free_pixels().
|
|
|
|
Version 1.0.5n [January 9, 2000]
|
|
Added png_free_PLTE() function, and modified png_set_PLTE() to malloc its
|
|
own memory for info_ptr->palette. This makes it safe for the calling
|
|
application to free its copy of the palette any time after it calls
|
|
png_set_PLTE().
|
|
|
|
Version 1.0.5o [January 20, 2000]
|
|
Cosmetic changes only (removed some trailing blanks and TABs)
|
|
|
|
Version 1.0.5p [January 31, 2000]
|
|
Renamed pngdll.mak to makefile.bd32
|
|
Cosmetic changes in pngtest.c
|
|
|
|
Version 1.0.5q [February 5, 2000]
|
|
Relocated the makefile.solaris warning about PATH problems.
|
|
Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg)
|
|
Revised makefile.gcmmx
|
|
Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() macros
|
|
|
|
Version 1.0.5r [February 7, 2000]
|
|
Removed superfluous prototype for png_get_itxt from png.h
|
|
Fixed a bug in pngrtran.c that improperly expanded the background color.
|
|
Return *num_text=0 from png_get_text() when appropriate, and fix documentation
|
|
of png_get_text() in libpng.txt/libpng.3.
|
|
|
|
Version 1.0.5s [February 18, 2000]
|
|
Added "png_jmp_env()" macro to pngconf.h, to help people migrate to the
|
|
new error handler that's planned for the next libpng release, and changed
|
|
example.c, pngtest.c, and contrib programs to use this macro.
|
|
Revised some of the DLL-export macros in pngconf.h (Greg Roelofs)
|
|
Fixed a bug in png_read_png() that caused it to fail to expand some images
|
|
that it should have expanded.
|
|
Fixed some mistakes in the unused and undocumented INCH_CONVERSIONS functions
|
|
in pngget.c
|
|
Changed the allocation of palette, history, and trans arrays back to
|
|
the version 1.0.5 method (linking instead of copying) which restores
|
|
backward compatibility with version 1.0.5. Added some remarks about
|
|
that in example.c. Added "free_me" member to info_ptr and png_ptr
|
|
and added png_free_data() function.
|
|
Updated makefile.linux and makefile.gccmmx to make directories conditionally.
|
|
Made cosmetic changes to pngasmrd.h
|
|
Added png_set_rows() and png_get_rows(), for use with png_read|write_png().
|
|
Modified png_read_png() to allocate info_ptr->row_pointers only if it
|
|
hasn't already been allocated.
|
|
|
|
Version 1.0.5t [March 4, 2000]
|
|
Changed png_jmp_env() migration aiding macro to png_jmpbuf().
|
|
Fixed "interlace" typo (should be "interlaced") in contrib/gregbook/read2-x.c
|
|
Fixed bug with use of PNG_BEFORE_IHDR bit in png_ptr->mode, introduced when
|
|
PNG_FLAG_HAVE_CHUNK_HEADER was moved into png_ptr->mode in version 1.0.5b
|
|
Files in contrib/gregbook were revised to use png_jmpbuf() and to select
|
|
a 24-bit visual if one is available, and to allow abbreviated options.
|
|
Files in contrib/pngminus were revised to use the png_jmpbuf() macro.
|
|
Removed spaces in makefile.linux and makefile.gcmmx, introduced in 1.0.5s
|
|
|
|
Version 1.0.5u [March 5, 2000]
|
|
Simplified the code that detects old png.h in png.c and pngtest.c
|
|
Renamed png_spalette (_p, _pp) to png_sPLT_t (_tp, _tpp)
|
|
Increased precision of rgb_to_gray calculations from 8 to 15 bits and
|
|
added png_set_rgb_to_gray_fixed() function.
|
|
Added makefile.bc32 (32-bit Borland C++, C mode)
|
|
|
|
Version 1.0.5v [March 11, 2000]
|
|
Added some parentheses to the png_jmpbuf macro definition.
|
|
Updated references to the zlib home page, which has moved to freesoftware.com.
|
|
Corrected bugs in documentation regarding png_read_row() and png_write_row().
|
|
Updated documentation of png_rgb_to_gray calculations in libpng.3/libpng.txt.
|
|
Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version 1.0.3,
|
|
revised borland makefiles; added makefile.ibmvac3 and makefile.gcc (Cosmin)
|
|
|
|
Version 1.0.6 [March 20, 2000]
|
|
Minor revisions of makefile.bor, libpng.txt, and gregbook/rpng2-win.c
|
|
Added makefile.sggcc (SGI IRIX with gcc)
|
|
|
|
Version 1.0.6d [April 7, 2000]
|
|
Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO
|
|
Added data_length parameter to png_decompress_chunk() function
|
|
Revised documentation to remove reference to abandoned png_free_chnk functions
|
|
Fixed an error in png_rgb_to_gray_fixed()
|
|
Revised example.c, usage of png_destroy_write_struct().
|
|
Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
|
|
Added a check for info_ptr->free_me&PNG_FREE_TEXT when freeing text in png.c
|
|
Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
|
|
|
|
Version 1.0.6e [April 9, 2000]
|
|
Added png_data_freer() function.
|
|
In the code that checks for over-length tRNS chunks, added check of
|
|
info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
|
|
Minor revisions of libpng.txt/libpng.3.
|
|
Check for existing data and free it if the free_me flag is set, in png_set_*()
|
|
and png_handle_*().
|
|
Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED
|
|
is defined.
|
|
Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
|
|
and mentioned the purposes of the two macros in libpng.txt/libpng.3.
|
|
|
|
Version 1.0.6f [April 14, 2000]
|
|
Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data.
|
|
Add checks in png_set_text() for NULL members of the input text structure.
|
|
Revised libpng.txt/libpng.3.
|
|
Removed superfluous prototype for png_set_iTXt from png.h
|
|
Removed "else" from pngread.c, after png_error(), and changed "0" to "length".
|
|
Changed several png_errors about malformed ancillary chunks to png_warnings.
|
|
|
|
Version 1.0.6g [April 24, 2000]
|
|
Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined.
|
|
Relocated paragraph about png_set_background() in libpng.3/libpng.txt
|
|
and other revisions (Matthias Benckmann)
|
|
Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and
|
|
png_ptr members to restore binary compatibility with libpng-1.0.5
|
|
(breaks compatibility with libpng-1.0.6).
|
|
|
|
Version 1.0.6h [April 24, 2000]
|
|
Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds
|
|
libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h)
|
|
This is a temporary change for test purposes.
|
|
|
|
Version 1.0.6i [May 2, 2000]
|
|
Rearranged some members at the end of png_info and png_struct, to put
|
|
unknown_chunks_num and free_me within the original size of the png_structs
|
|
and free_me, png_read_user_fn, and png_free_fn within the original png_info,
|
|
because some old applications allocate the structs directly instead of
|
|
using png_create_*().
|
|
Added documentation of user memory functions in libpng.txt/libpng.3
|
|
Modified png_read_png so that it will use user_allocated row_pointers
|
|
if present, unless free_me directs that it be freed, and added description
|
|
of the use of png_set_rows() and png_get_rows() in libpng.txt/libpng.3.
|
|
Added PNG_LEGACY_SUPPORTED macro, and #ifdef out all new (since version
|
|
1.00) members of png_struct and png_info, to regain binary compatibility
|
|
when you define this macro. Capabilities lost in this event
|
|
are user transforms (new in version 1.0.0),the user transform pointer
|
|
(new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT,
|
|
the high-level interface, and unknown chunks support (all new in 1.0.6).
|
|
This was necessary because of old applications that allocate the structs
|
|
directly as authors were instructed to do in libpng-0.88 and earlier,
|
|
instead of using png_create_*().
|
|
Added modes PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT which
|
|
can be used to detect codes that directly allocate the structs, and
|
|
code to check these modes in png_read_init() and png_write_init() and
|
|
generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED
|
|
was not defined.
|
|
Added makefile.intel and updated makefile.watcom (Pawel Mrochen)
|
|
|
|
Version 1.0.6j [May 3, 2000]
|
|
Overloaded png_read_init() and png_write_init() with macros that convert
|
|
calls to png_read_init_2() or png_write_init_2() that check the version
|
|
and structure sizes.
|
|
|
|
Version 1.0.7beta11 [May 7, 2000]
|
|
Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes
|
|
which are no longer used.
|
|
Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is
|
|
defined or when neither PNG_READ_iTXt_SUPPORTED nor PNG_WRITE_iTXT_SUPPORTED
|
|
is defined.
|
|
Made PNG_NO_READ|WRITE_iTXt the default setting, to avoid memory
|
|
overrun when old applications fill the info_ptr->text structure directly.
|
|
Added PNGAPI macro, and added it to the definitions of all exported functions.
|
|
Relocated version macro definitions ahead of the includes of zlib.h and
|
|
pngconf.h in png.h.
|
|
|
|
Version 1.0.7beta12 [May 12, 2000]
|
|
Revised pngset.c to avoid a problem with expanding the png_debug macro.
|
|
Deleted some extraneous defines from pngconf.h
|
|
Made PNG_NO_CONSOLE_IO the default condition when PNG_BUILD_DLL is defined.
|
|
Use MSC _RPTn debugging instead of fprintf if _MSC_VER is defined.
|
|
Added png_access_version_number() function.
|
|
Check for mask&PNG_FREE_CHNK (for TEXT, SCAL, PCAL) in png_free_data().
|
|
Expanded libpng.3/libpng.txt information about png_data_freer().
|
|
|
|
Version 1.0.7beta14 [May 17, 2000] (beta13 was not published)
|
|
Changed pnggccrd.c and pngvcrd.c to handle bad adaptive filter types as
|
|
warnings instead of errors, as pngrutil.c does.
|
|
Set the PNG_INFO_IDAT valid flag in png_set_rows() so png_write_png()
|
|
will actually write IDATs.
|
|
Made the default PNG_USE_LOCAL_ARRAYS depend on PNG_DLL instead of WIN32.
|
|
Make png_free_data() ignore its final parameter except when freeing data
|
|
that can have multiple instances (text, sPLT, unknowns).
|
|
Fixed a new bug in png_set_rows().
|
|
Removed info_ptr->valid tests from png_free_data(), as in version 1.0.5.
|
|
Added png_set_invalid() function.
|
|
Fixed incorrect illustrations of png_destroy_write_struct() in example.c.
|
|
|
|
Version 1.0.7beta15 [May 30, 2000]
|
|
Revised the deliberately erroneous Linux setjmp code in pngconf.h to produce
|
|
fewer error messages.
|
|
Rearranged checks for Z_OK to check the most likely path first in pngpread.c
|
|
and pngwutil.c.
|
|
Added checks in pngtest.c for png_create_*() returning NULL, and mentioned
|
|
in libpng.txt/libpng.3 the need for applications to check this.
|
|
Changed names of png_default_*() functions in pngtest to pngtest_*().
|
|
Changed return type of png_get_x|y_offset_*() from png_uint_32 to png_int_32.
|
|
Fixed some bugs in the unused PNG_INCH_CONVERSIONS functions in pngget.c
|
|
Set each pointer to NULL after freeing it in png_free_data().
|
|
Worked around a problem in pngconf.h; AIX's strings.h defines an "index"
|
|
macro that conflicts with libpng's png_color_16.index. (Dimitri
|
|
Papadapoulos)
|
|
Added "msvc" directory with MSVC++ project files (Simon-Pierre Cadieux).
|
|
|
|
Version 1.0.7beta16 [June 4, 2000]
|
|
Revised the workaround of AIX string.h "index" bug.
|
|
Added a check for overlength PLTE chunk in pngrutil.c.
|
|
Added PNG_NO_POINTER_INDEXING macro to use array-indexing instead of pointer
|
|
indexing in pngrutil.c and pngwutil.c to accommodate a buggy compiler.
|
|
Added a warning in png_decompress_chunk() when it runs out of data, e.g.
|
|
when it tries to read an erroneous PhotoShop iCCP chunk.
|
|
Added PNG_USE_DLL macro.
|
|
Revised the copyright/disclaimer/license notice.
|
|
Added contrib/msvctest directory
|
|
|
|
Version 1.0.7rc1 [June 9, 2000]
|
|
Corrected the definition of PNG_TRANSFORM_INVERT_ALPHA (0x0400 not 0x0200)
|
|
Added contrib/visupng directory (Willem van Schaik)
|
|
|
|
Version 1.0.7beta18 [June 23, 2000]
|
|
Revised PNGAPI definition, and pngvcrd.c to work with __GCC__
|
|
and do not redefine PNGAPI if it is passed in via a compiler directive.
|
|
Revised visupng/PngFile.c to remove returns from within the Try block.
|
|
Removed leading underscores from "_PNG_H" and "_PNG_SAVE_BSD_SOURCE" macros.
|
|
Updated contrib/visupng/cexcept.h to version 1.0.0.
|
|
Fixed bugs in pngwrite.c and pngwutil.c that prevented writing iCCP chunks.
|
|
|
|
Version 1.0.7rc2 [June 28, 2000]
|
|
Updated license to include disclaimers required by UCITA.
|
|
Fixed "DJBPP" typo in pnggccrd.c introduced in beta18.
|
|
|
|
Version 1.0.7 [July 1, 2000]
|
|
Revised the definition of "trans_values" in libpng.3/libpng.txt
|
|
|
|
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.
|
|
Changed PNG_EXPORT_VAR to use PNG_IMPEXP, in pngconf.h.
|
|
Removed unused "#include <assert.h>" from png.c
|
|
Added WindowsCE support.
|
|
Revised pnggccrd.c to work with gcc-2.95.2 and in the Cygwin environment.
|
|
|
|
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.
|
|
|
|
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.
|
|
Further revisions to pngtest.c and files in the wince subdirectory.
|
|
|
|
Version 1.0.8beta4 [July 14, 2000]
|
|
Added the files pngbar.png and pngbar.jpg to the distribution.
|
|
Added makefile.cygwin, and cygwin support in pngconf.h
|
|
Added PNG_NO_ZALLOC_ZERO macro (makes png_zalloc skip zeroing memory)
|
|
|
|
Version 1.0.8rc1 [July 16, 2000]
|
|
Revised png_debug() macros and statements to eliminate compiler warnings.
|
|
|
|
Version 1.0.8 [July 24, 2000]
|
|
Added png_flush() in pngwrite.c, after png_write_IEND().
|
|
Updated makefile.hpux to build a shared library.
|
|
|
|
Version 1.0.9beta1 [November 10, 2000]
|
|
Fixed typo in scripts/makefile.hpux
|
|
Updated makevms.com in scripts and contrib/* and contrib/* (Martin Zinser)
|
|
Fixed seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser)
|
|
Changed "cdrom.com" in documentation to "libpng.org"
|
|
Revised pnggccrd.c to get it all working, and updated makefile.gcmmx (Greg).
|
|
Changed type of "params" from voidp to png_voidp in png_read|write_png().
|
|
Make sure PNGAPI and PNG_IMPEXP are defined in pngconf.h.
|
|
Revised the 3 instances of WRITEFILE in pngtest.c.
|
|
Relocated "msvc" and "wince" project subdirectories into "dll" subdirectory.
|
|
Updated png.rc in dll/msvc project
|
|
Revised makefile.dec to define and use LIBPATH and INCPATH
|
|
Increased size of global png_libpng_ver[] array from 12 to 18 chars.
|
|
Made global png_libpng_ver[], png_sig[] and png_pass_*[] arrays const.
|
|
Removed duplicate png_crc_finish() from png_handle_bKGD() function.
|
|
Added a warning when application calls png_read_update_info() multiple times.
|
|
Revised makefile.cygwin
|
|
Fixed bugs in iCCP support in pngrutil.c and pngwutil.c.
|
|
Replaced png_set_empty_plte_permitted() with png_permit_mng_features().
|
|
|
|
Version 1.0.9beta2 [November 19, 2000]
|
|
Renamed the "dll" subdirectory "projects".
|
|
Added borland project files to "projects" subdirectory.
|
|
Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate.
|
|
Add error message in png_set_compression_buffer_size() when malloc fails.
|
|
|
|
Version 1.0.9beta3 [November 23, 2000]
|
|
Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project.
|
|
Removed the png_flush() in pngwrite.c that crashes some applications
|
|
that don't set png_output_flush_fn.
|
|
Added makefile.macosx and makefile.aix to scripts directory.
|
|
|
|
Version 1.0.9beta4 [December 1, 2000]
|
|
Change png_chunk_warning to png_warning in png_check_keyword().
|
|
Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
|
|
|
|
Version 1.0.9beta5 [December 15, 2000]
|
|
Added support for filter method 64 (for PNG datastreams embedded in MNG).
|
|
|
|
Version 1.0.9beta6 [December 18, 2000]
|
|
Revised png_set_filter() to accept filter method 64 when appropriate.
|
|
Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to
|
|
help prevent applications from using MNG features in PNG datastreams.
|
|
Added png_permit_mng_features() function.
|
|
Revised libpng.3/libpng.txt. Changed "filter type" to "filter method".
|
|
|
|
Version 1.0.9rc1 [December 23, 2000]
|
|
Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c
|
|
Fixed error handling of unknown compression type in png_decompress_chunk().
|
|
In pngconf.h, define __cdecl when _MSC_VER is defined.
|
|
|
|
Version 1.0.9beta7 [December 28, 2000]
|
|
Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places.
|
|
Revised memory management in png_set_hIST and png_handle_hIST in a backward
|
|
compatible manner. PLTE and tRNS were revised similarly.
|
|
Revised the iCCP chunk reader to ignore trailing garbage.
|
|
|
|
Version 1.0.9beta8 [January 12, 2001]
|
|
Moved pngasmrd.h into pngconf.h.
|
|
Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop.
|
|
|
|
Version 1.0.9beta9 [January 15, 2001]
|
|
Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to
|
|
wince and msvc project module definition files.
|
|
Minor revision of makefile.cygwin.
|
|
Fixed bug with progressive reading of narrow interlaced images in pngpread.c
|
|
|
|
Version 1.0.9beta10 [January 16, 2001]
|
|
Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined.
|
|
Fixed "png_mmx_supported" typo in project definition files.
|
|
|
|
Version 1.0.9beta11 [January 19, 2001]
|
|
Updated makefile.sgi to make shared library.
|
|
Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED
|
|
by default, for the benefit of DLL forward compatibility. These will
|
|
be re-enabled in version 1.2.0.
|
|
|
|
Version 1.0.9rc2 [January 22, 2001]
|
|
Revised cygwin support.
|
|
|
|
Version 1.0.9 [January 31, 2001]
|
|
Added check of cygwin's ALL_STATIC in pngconf.h
|
|
Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos.
|
|
|
|
Version 1.0.10beta1 [March 14, 2001]
|
|
Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc.
|
|
Reformatted libpng.3 to eliminate bad line breaks.
|
|
Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c
|
|
Added prototype for png_mmx_support() near the top of pnggccrd.c
|
|
Moved some error checking from png_handle_IHDR to png_set_IHDR.
|
|
Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros.
|
|
Revised png_mmx_support() function in pnggccrd.c
|
|
Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c
|
|
Fixed memory leak in contrib/visupng/PngFile.c
|
|
Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version)
|
|
Added warnings when retrieving or setting gamma=0.
|
|
Increased the first part of msg buffer from 16 to 18 in png_chunk_warning().
|
|
|
|
Version 1.0.10rc1 [March 23, 2001]
|
|
Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy,
|
|
and png_strlen.
|
|
Revised png_mmx_supported() function in pnggccrd.c to return proper value.
|
|
Fixed bug in progressive reading (pngpread.c) with small images (height < 8).
|
|
|
|
Version 1.0.10 [March 30, 2001]
|
|
Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin
|
|
Added beos project files (Chris Herborth)
|
|
|
|
Version 1.0.11beta1 [April 3, 2001]
|
|
Added type casts on several png_malloc() calls (Dimitri Papadapoulos).
|
|
Removed a no-longer needed AIX work-around from pngconf.h
|
|
Changed several "//" single-line comments to C-style in pnggccrd.c
|
|
|
|
Version 1.0.11beta2 [April 11, 2001]
|
|
Removed PNGAPI from several functions whose prototypes did not have PNGAPI.
|
|
Updated scripts/pngos2.def
|
|
|
|
Version 1.0.11beta3 [April 14, 2001]
|
|
Added checking the results of many instances of png_malloc() for NULL
|
|
|
|
Version 1.0.11beta4 [April 20, 2001]
|
|
Undid the changes from version 1.0.11beta3. Added a check for NULL return
|
|
from user's malloc_fn().
|
|
Removed some useless type casts of the NULL pointer.
|
|
Added makefile.netbsd
|
|
|
|
Version 1.0.11 [April 27, 2001]
|
|
Revised makefile.netbsd
|
|
|
|
Version 1.0.12beta1 [May 14, 2001]
|
|
Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
|
|
Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
|
|
Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
|
|
Eliminated the png_error about apps using png_read|write_init(). Instead,
|
|
libpng will reallocate the png_struct and info_struct if they are too small.
|
|
This retains future binary compatibility for old applications written for
|
|
libpng-0.88 and earlier.
|
|
|
|
Version 1.2.0beta1 [May 6, 2001]
|
|
Bumped DLLNUM to 2.
|
|
Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
|
|
by default.
|
|
Added runtime selection of MMX features.
|
|
Added png_set_strip_error_numbers function and related macros.
|
|
|
|
Version 1.2.0beta2 [May 7, 2001]
|
|
Finished merging 1.2.0beta1 with version 1.0.11
|
|
Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
|
|
|
|
Version 1.2.0beta3 [May 17, 2001]
|
|
Enabled user memory function by default.
|
|
Modified png_create_struct so it passes user mem_ptr to user memory allocator.
|
|
Increased png_mng_features flag from png_byte to png_uint_32.
|
|
Bumped shared-library (so-number) and dll-number to 3.
|
|
|
|
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.
|
|
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.
|
|
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.
|
|
Updated example.c
|
|
Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
|
|
|
|
Version 1.2.0beta5 [August 8, 2001]
|
|
Revised contrib/gregbook
|
|
Revised makefile.gcmmx
|
|
Revised pnggccrd.c to conditionally compile some thread-unsafe code only
|
|
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
|
|
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
|
|
|
|
Version 1.2.0 [September 1, 2001]
|
|
Changed a png_warning() to png_debug() in pnggccrd.c
|
|
Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
|
|
|
|
Version 1.2.1beta1 [October 19, 2001]
|
|
Revised makefile.std in contrib/pngminus
|
|
Include background_1 in png_struct regardless of gamma support.
|
|
Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
|
|
Revised example.c to provide more details about using row_callback().
|
|
|
|
Version 1.2.1beta2 [October 25, 2001]
|
|
Added type cast to each NULL appearing in a function call, except for
|
|
WINCE functions.
|
|
Added makefile.so9.
|
|
|
|
Version 1.2.1beta3 [October 27, 2001]
|
|
Removed type casts from all NULLs.
|
|
Simplified png_create_struct_2().
|
|
|
|
Version 1.2.1beta4 [November 7, 2001]
|
|
Revised png_create_info_struct() and png_creat_struct_2().
|
|
Added error message if png_write_info() was omitted.
|
|
Type cast NULLs appearing in function calls when _NO_PROTO or
|
|
PNG_TYPECAST_NULL is defined.
|
|
|
|
Version 1.2.1rc1 [November 24, 2001]
|
|
Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL
|
|
is defined.
|
|
Changed typecast of "size" argument to png_size_t in pngmem.c calls to
|
|
the user malloc_fn, to agree with the prototype in png.h
|
|
Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev)
|
|
Updated makefile.sgi to recognize LIBPATH and INCPATH.
|
|
Updated various makefiles so "make clean" does not remove previous major
|
|
version of the shared library.
|
|
|
|
Version 1.2.1rc2 [December 4, 2001]
|
|
Always allocate 256-entry internal palette, hist, and trans arrays, to
|
|
avoid out-of-bounds memory reference caused by invalid PNG datastreams.
|
|
Added a check for prefix_length > data_length in iCCP chunk handler.
|
|
|
|
Version 1.2.1 [December 7, 2001]
|
|
None.
|
|
|
|
Version 1.2.2beta1 [February 22, 2002]
|
|
Fixed a bug with reading the length of iCCP profiles (Larry Reeves).
|
|
Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate
|
|
libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h
|
|
Revised makefile.darwin to remove "-undefined suppress" option.
|
|
Added checks for gamma and chromaticity values over 21474.83, which exceed
|
|
the limit for PNG unsigned 32-bit integers when encoded.
|
|
Revised calls to png_create_read_struct() and png_create_write_struct()
|
|
for simpler debugging.
|
|
Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK)
|
|
|
|
Version 1.2.2beta2 [February 23, 2002]
|
|
Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths.
|
|
Check for invalid image dimensions in png_get_IHDR.
|
|
Added missing "fi;" in the install target of the SGI makefiles.
|
|
Added install-static to all makefiles that make shared libraries.
|
|
Always do gamma compensation when image is partially transparent.
|
|
|
|
Version 1.2.2beta3 [March 7, 2002]
|
|
Compute background.gray and background_1.gray even when color_type is RGB
|
|
in case image gets reduced to gray later.
|
|
Modified shared-library makefiles to install pkgconfig/libpngNN.pc.
|
|
Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown
|
|
Removed unused png_write_destroy_info prototype from png.h
|
|
Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case
|
|
Added install-shared target to all makefiles that make shared libraries.
|
|
Stopped a double free of palette, hist, and trans when not using free_me.
|
|
Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64.
|
|
|
|
Version 1.2.2beta4 [March 8, 2002]
|
|
Compute background.gray and background_1.gray even when color_type is RGB
|
|
in case image gets reduced to gray later (Jason Summers).
|
|
Relocated a misplaced /bin/rm in the "install-shared" makefile targets
|
|
Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library.
|
|
|
|
Version 1.2.2beta5 [March 26, 2002]
|
|
Added missing PNGAPI to several function definitions.
|
|
Check for invalid bit_depth or color_type in png_get_IHDR(), and
|
|
check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen).
|
|
Revised iTXt support to accept NULL for lang and lang_key.
|
|
Compute gamma for color components of background even when color_type is gray.
|
|
Changed "()" to "{}" in scripts/libpng.pc.in.
|
|
Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN
|
|
Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so
|
|
|
|
Version 1.2.2beta6 [March 31, 2002]
|
|
|
|
Version 1.0.13beta1 [March 31, 2002]
|
|
Prevent png_zalloc() from trying to memset memory that it failed to acquire.
|
|
Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate).
|
|
Ensure that the right function (user or default) is used to free the
|
|
png_struct after an error in png_create_read_struct_2().
|
|
|
|
Version 1.2.2rc1 [April 7, 2002]
|
|
|
|
Version 1.0.13rc1 [April 7, 2002]
|
|
Save the ebx register in pnggccrd.c (Sami Farin)
|
|
Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner).
|
|
Updated makefiles to put headers in include/libpng and remove old include/*.h.
|
|
|
|
Version 1.2.2 [April 15, 2002]
|
|
|
|
Version 1.0.13 [April 15, 2002]
|
|
Revised description of png_set_filter() in libpng.3/libpng.txt.
|
|
Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd
|
|
|
|
Version 1.0.13patch01 [April 17, 2002]
|
|
|
|
Version 1.2.2patch01 [April 17, 2002]
|
|
Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and
|
|
makefile.sggcc
|
|
Fixed VER -> PNGVER typo in makefile.macosx and added install-static to
|
|
install
|
|
Added install: target to makefile.32sunu and makefile.64sunu
|
|
|
|
Version 1.0.13patch03 [April 18, 2002]
|
|
|
|
Version 1.2.2patch03 [April 18, 2002]
|
|
Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng
|
|
subdirectory to libpngNN subdirectory without the full pathname.
|
|
Moved generation of libpng.pc from "install" to "all" in 15 makefiles.
|
|
|
|
Version 1.2.3rc1 [April 28, 2002]
|
|
Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos).
|
|
Added $(DESTDIR) feature to 24 makefiles (Tim Mooney)
|
|
Fixed bug with $prefix, should be $(prefix) in makefile.hpux.
|
|
Updated cygwin-specific portion of pngconf.h and revised makefile.cygwin
|
|
Added a link from libpngNN.pc to libpng.pc in 15 makefiles.
|
|
Added links from include/libpngNN/*.h to include/*.h in 24 makefiles.
|
|
Revised makefile.darwin to make relative links without full pathname.
|
|
Added setjmp() at the end of png_create_*_struct_2() in case user forgets
|
|
to put one in their application.
|
|
Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and
|
|
removed them from module definition files.
|
|
|
|
Version 1.2.3rc2 [May 1, 2002]
|
|
Fixed bug in reporting number of channels in pngget.c and pngset.c,
|
|
that was introduced in version 1.2.2beta5.
|
|
Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(),
|
|
png_default_flush(), and png_push_fill_buffer() and included them in
|
|
module definition files.
|
|
Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles.
|
|
|
|
Version 1.2.3rc3 [May 1, 2002]
|
|
Revised prototype for png_default_flush()
|
|
Remove old libpng.pc and libpngNN.pc before installing new ones.
|
|
|
|
Version 1.2.3rc4 [May 2, 2002]
|
|
Typos in *.def files (png_default_read|write -> png_default_read|write_data)
|
|
In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc
|
|
Added libpng-config and libpngNN-config and modified makefiles to install
|
|
them.
|
|
Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles
|
|
Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp
|
|
|
|
Version 1.2.3rc5 [May 11, 2002]
|
|
Changed "error" and "message" in prototypes to "error_message" and
|
|
"warning_message" to avoid namespace conflict.
|
|
Revised 15 makefiles to build libpng-config from libpng-config-*.in
|
|
Once more restored png_zalloc and png_zfree to regular nonexported form.
|
|
Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
|
|
to nonexported form, but with PNGAPI, and removed them from module def
|
|
files.
|
|
|
|
Version 1.2.3rc6 [May 14, 2002]
|
|
Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
|
|
Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp.
|
|
Removed leftover libpng-config "sed" script from four makefiles.
|
|
Revised libpng-config creating script in 16 makefiles.
|
|
|
|
Version 1.2.3 [May 22, 2002]
|
|
Revised libpng-config target in makefile.cygwin.
|
|
Removed description of png_set_mem_fn() from documentation.
|
|
Revised makefile.freebsd.
|
|
Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR).
|
|
Revised projects/msvc/README.txt
|
|
Changed -lpng to -lpngNN in LDFLAGS in several makefiles.
|
|
|
|
Version 1.2.4beta1 [May 24, 2002]
|
|
Added libpng.pc and libpng-config to "all:" target in 16 makefiles.
|
|
Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH)
|
|
Added missing "\" before closing double quote in makefile.gcmmx.
|
|
Plugged various memory leaks; added png_malloc_warn() and png_set_text_2()
|
|
functions.
|
|
|
|
Version 1.2.4beta2 [June 25, 2002]
|
|
Plugged memory leak of png_ptr->current_text (Matt Holgate).
|
|
Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison)
|
|
Added -soname to the loader flags in makefile.dec, makefile.sgi, and
|
|
makefile.sggcc.
|
|
Added "test-installed" target to makefile.linux, makefile.gcmmx,
|
|
makefile.sgi, and makefile.sggcc.
|
|
|
|
Version 1.2.4beta3 [June 28, 2002]
|
|
Plugged memory leak of row_buf in pngtest.c when there is a png_error().
|
|
Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
|
|
Added "test-installed" target to makefile.32sunu, makefile.64sunu,
|
|
makefile.beos, makefile.darwin, makefile.dec, makefile.macosx,
|
|
makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9.
|
|
|
|
Version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002]
|
|
Added "test-installed" target to makefile.cygwin and makefile.sco.
|
|
Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro.
|
|
|
|
Version 1.2.4 and 1.0.14 [July 8, 2002]
|
|
Changed png_warning() to png_error() when width is too large to process.
|
|
|
|
Version 1.2.4patch01 [July 20, 2002]
|
|
Revised makefile.cygwin to use DLL number 12 instead of 13.
|
|
|
|
Version 1.2.5beta1 [August 6, 2002]
|
|
Added code to contrib/gregbook/readpng2.c to ignore unused chunks.
|
|
Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11)
|
|
Removed some stray *.o files from contrib/gregbook.
|
|
Changed png_error() to png_warning() about "Too much data" in pngpread.c
|
|
and about "Extra compressed data" in pngrutil.c.
|
|
Prevent png_ptr->pass from exceeding 7 in png_push_finish_row().
|
|
Updated makefile.hpgcc
|
|
Updated png.c and pnggccrd.c handling of return from png_mmx_support()
|
|
|
|
Version 1.2.5beta2 [August 15, 2002]
|
|
Only issue png_warning() about "Too much data" in pngpread.c when avail_in
|
|
is nonzero.
|
|
Updated makefiles to install a separate libpng.so.3 with its own rpath.
|
|
|
|
Version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002]
|
|
Revised makefiles to not remove previous minor versions of shared libraries.
|
|
|
|
Version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002]
|
|
Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared
|
|
library loader directive.
|
|
Added missing "$OBJSDLL" line to makefile.gcmmx.
|
|
Added missing "; fi" to makefile.32sunu.
|
|
|
|
Version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002]
|
|
Revised libpng-config script.
|
|
|
|
Version 1.2.5 and 1.0.15 [October 3, 2002]
|
|
Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux,
|
|
and makefile.aix.
|
|
Relocated two misplaced PNGAPI lines in pngtest.c
|
|
|
|
Version 1.2.6beta1 [October 22, 2002]
|
|
Commented out warning about uninitialized mmx_support in pnggccrd.c.
|
|
Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h.
|
|
Relocated two more misplaced PNGAPI lines in pngtest.c
|
|
Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams,
|
|
introduced in version 1.0.2.
|
|
Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu.
|
|
|
|
Version 1.2.6beta2 [November 1, 2002]
|
|
Added libpng-config "--ldopts" output.
|
|
Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)"
|
|
in makefiles.
|
|
|
|
Version 1.2.6beta3 [July 18, 2004]
|
|
Reverted makefile changes from version 1.2.6beta2 and some of the changes
|
|
from version 1.2.6beta1; these will be postponed until version 1.2.7.
|
|
Version 1.2.6 is going to be a simple bugfix release.
|
|
Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile.
|
|
Fixed potential overrun in pngerror.c by using strncpy instead of memcpy.
|
|
Added "#!/bin/sh" at the top of configure, for recognition of the
|
|
'x' flag under Cygwin (Cosmin).
|
|
Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin).
|
|
Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin).
|
|
Fixed the special memory handler for Borland C under DOS, in pngmem.c
|
|
(Cosmin).
|
|
Removed some spurious assignments in pngrutil.c (Cosmin).
|
|
Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings
|
|
on 16-bit platforms (Cosmin).
|
|
Enclosed shift op expressions in parentheses, to silence warnings (Cosmin).
|
|
Used proper type png_fixed_point, to avoid problems on 16-bit platforms,
|
|
in png_handle_sRGB() (Cosmin).
|
|
Added compression_type to png_struct, and optimized the window size
|
|
inside the deflate stream (Cosmin).
|
|
Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin).
|
|
Fixed handling of unknown chunks that come after IDAT (Cosmin).
|
|
Allowed png_error() and png_warning() to work even if png_ptr == NULL
|
|
(Cosmin).
|
|
Replaced row_info->rowbytes with row_bytes in png_write_find_filter()
|
|
(Cosmin).
|
|
Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre).
|
|
Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded
|
|
values in png.c (Simon-Pierre, Cosmin).
|
|
Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre).
|
|
Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc
|
|
(Simon-Pierre).
|
|
Moved the definition of PNG_HEADER_VERSION_STRING near the definitions
|
|
of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin).
|
|
Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin).
|
|
Updated scripts/makefile.vc(a)win32 (Cosmin).
|
|
Updated the MSVC project (Simon-Pierre, Cosmin).
|
|
Updated the Borland C++ Builder project (Cosmin).
|
|
Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin).
|
|
Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin).
|
|
Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin).
|
|
Added extra guard around inclusion of Turbo C memory headers, in pngconf.h
|
|
(Cosmin).
|
|
Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to
|
|
projects/cbuilder5/ (Cosmin).
|
|
Moved projects/visualc6/png32ms.def to scripts/pngw32.def,
|
|
and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin).
|
|
Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin).
|
|
Changed line endings to DOS style in cbuilder5 and visualc6 files, even
|
|
in the tar.* distributions (Cosmin).
|
|
Updated contrib/visupng/VisualPng.dsp (Cosmin).
|
|
Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin).
|
|
Added a separate distribution with "configure" and supporting files (Junichi).
|
|
|
|
Version 1.2.6beta4 [July 28, 2004]
|
|
Added user ability to change png_size_t via a PNG_SIZE_T macro.
|
|
Added png_sizeof() and png_convert_size() functions.
|
|
Added PNG_SIZE_MAX (maximum value of a png_size_t variable.
|
|
Added check in png_malloc_default() for (size_t)size != (png_uint_32)size
|
|
which would indicate an overflow.
|
|
Changed sPLT failure action from png_error to png_warning and abandon chunk.
|
|
Changed sCAL and iCCP failures from png_error to png_warning and abandon.
|
|
Added png_get_uint_31(png_ptr, buf) function.
|
|
Added PNG_UINT_32_MAX macro.
|
|
Renamed PNG_MAX_UINT to PNG_UINT_31_MAX.
|
|
Made png_zalloc() issue a png_warning and return NULL on potential
|
|
overflow.
|
|
Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x
|
|
Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
|
|
Revised Borland portion of png_malloc() to return NULL or issue
|
|
png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
|
|
Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
|
|
sequential read support.
|
|
Added some "#if PNG_WRITE_SUPPORTED" blocks.
|
|
Added #ifdef to remove some redundancy in png_malloc_default().
|
|
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 (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
|
|
Rearranged order of processing of color types in png_handle_tRNS().
|
|
Added ROWBYTES macro to calculate rowbytes without integer overflow.
|
|
Updated makefile.darwin and removed makefile.macosx from scripts directory.
|
|
Imposed default one million column, one-million row limits on the image
|
|
dimensions, and added png_set_user_limits() function to override them.
|
|
Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro.
|
|
Fixed wrong cast of returns from png_get_user_width|height_max().
|
|
Changed some "keep the compiler happy" from empty statements to returns,
|
|
Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution
|
|
|
|
Version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004]
|
|
Revised makefile.darwin and makefile.solaris. Removed makefile.macosx.
|
|
Revised pngtest's png_debug_malloc() to use png_malloc() instead of
|
|
png_malloc_default() which is not supposed to be exported.
|
|
Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in
|
|
pngpread.c. Bug was introduced in 1.2.6rc1.
|
|
Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1.
|
|
Fixed old bug in RGB to Gray transformation.
|
|
Fixed problem with 64-bit compilers by casting arguments to abs()
|
|
to png_int_32.
|
|
Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9).
|
|
Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin)
|
|
Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles.
|
|
Added code to update the row_info->colortype in png_do_read_filler() (MSB).
|
|
|
|
Version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004]
|
|
Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid
|
|
trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro.
|
|
Revised documentation of png_set_keep_unknown_chunks().
|
|
Check handle_as_unknown status in pngpread.c, as in pngread.c previously.
|
|
Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h
|
|
Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c
|
|
|
|
Version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004]
|
|
Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of
|
|
"pinfo" was out of place).
|
|
|
|
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.
|
|
|
|
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 1.2.7beta1 [August 26, 2004]
|
|
Removed unused pngasmrd.h file.
|
|
Removed references to uu.net for archived files. Added references to
|
|
PNG Spec (second edition) and the PNG ISO/IEC Standard.
|
|
Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR.
|
|
Fixed bug with "optimized window size" in the IDAT datastream, that
|
|
causes libpng to write PNG files with incorrect zlib header bytes.
|
|
|
|
Version 1.2.7beta2 [August 28, 2004]
|
|
Fixed bug with sCAL chunk and big-endian machines (David Munro).
|
|
Undid new code added in 1.2.6rc2 to update the color_type in
|
|
png_set_filler().
|
|
Added png_set_add_alpha() that updates color type.
|
|
|
|
Version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
|
|
Revised png_set_strip_filler() to not remove alpha if color_type has alpha.
|
|
|
|
Version 1.2.7 and 1.0.17 [September 12, 2004]
|
|
Added makefile.hp64
|
|
Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin
|
|
|
|
Version 1.2.8beta1 [November 1, 2004]
|
|
Fixed bug in png_text_compress() that would fail to complete a large block.
|
|
Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
|
|
strip alpha operation in png_do_strip_filler().
|
|
Added PNG_1_2_X definition in pngconf.h
|
|
Use #ifdef to comment out png_info_init in png.c and png_read_init in
|
|
pngread.c (as of 1.3.0)
|
|
|
|
Version 1.2.8beta2 [November 2, 2004]
|
|
Reduce color_type to a nonalpha type after strip alpha operation in
|
|
png_do_strip_filler().
|
|
|
|
Version 1.2.8beta3 [November 3, 2004]
|
|
Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM
|
|
|
|
Version 1.2.8beta4 [November 12, 2004]
|
|
Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin).
|
|
Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin).
|
|
Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection
|
|
of data type in deflate (Cosmin).
|
|
Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of
|
|
PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
|
|
|
|
Version 1.2.8beta5 [November 20, 2004]
|
|
Use png_ptr->flags instead of png_ptr->transformations to pass
|
|
PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI
|
|
compatibility.
|
|
Revised handling of SPECIALBUILD, PRIVATEBUILD,
|
|
PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
|
|
|
|
Version 1.2.8rc1 [November 24, 2004]
|
|
Moved handling of BUILD macros from pngconf.h to png.h
|
|
Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently
|
|
omitted from beta5.
|
|
Revised scripts/pngw32.rc
|
|
Despammed mailing addresses by masking "@" with "at".
|
|
Inadvertently installed a supposedly faster test version of pngrutil.c
|
|
|
|
Version 1.2.8rc2 [November 26, 2004]
|
|
Added two missing "\" in png.h
|
|
Change tests in pngread.c and pngpread.c to
|
|
if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
|
|
png_do_read_transformations(png_ptr);
|
|
|
|
Version 1.2.8rc3 [November 28, 2004]
|
|
Reverted pngrutil.c to version libpng-1.2.8beta5.
|
|
Added scripts/makefile.elf with supporting code in pngconf.h for symbol
|
|
versioning (John Bowler).
|
|
|
|
Version 1.2.8rc4 [November 29, 2004]
|
|
Added projects/visualc7 (Simon-pierre).
|
|
|
|
Version 1.2.8rc5 [November 29, 2004]
|
|
Fixed new typo in scripts/pngw32.rc
|
|
|
|
Version 1.2.8 [December 3, 2004]
|
|
Removed projects/visualc7, added projects/visualc71.
|
|
|
|
Version 1.2.9beta1 [February 21, 2006]
|
|
Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints
|
|
Revised man page and libpng.txt to make it clear that one should not call
|
|
png_read_end or png_write_end after png_read_png or png_write_png.
|
|
Updated references to png-mng-implement mailing list.
|
|
Fixed an incorrect typecast in pngrutil.c
|
|
Added PNG_NO_READ_SUPPORTED conditional for making a write-only library.
|
|
Added PNG_NO_WRITE_INTERLACING_SUPPORTED conditional.
|
|
Optimized alpha-inversion loops in pngwtran.c
|
|
Moved test for nonzero gamma outside of png_build_gamma_table() in pngrtran.c
|
|
Make sure num_trans is <= 256 before copying data in png_set_tRNS().
|
|
Make sure num_palette is <= 256 before copying data in png_set_PLTE().
|
|
Interchanged order of write_swap_alpha and write_invert_alpha transforms.
|
|
Added parentheses in the definition of PNG_LIBPNG_BUILD_TYPE (Cosmin).
|
|
Optimized zlib window flag (CINFO) in contrib/pngsuite/*.png (Cosmin).
|
|
Updated scripts/makefile.bc32 for Borland C++ 5.6 (Cosmin).
|
|
Exported png_get_uint_32, png_save_uint_32, png_get_uint_16, png_save_uint_16,
|
|
png_get_int_32, png_save_int_32, png_get_uint_31 (Cosmin).
|
|
Added type cast (png_byte) in png_write_sCAL() (Cosmin).
|
|
Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin).
|
|
Default iTXt support was inadvertently enabled.
|
|
|
|
Version 1.2.9beta2 [February 21, 2006]
|
|
Check for png_rgb_to_gray and png_gray_to_rgb read transformations before
|
|
checking for png_read_dither in pngrtran.c
|
|
Revised checking of chromaticity limits to accommodate extended RGB
|
|
colorspace (John Denker).
|
|
Changed line endings in some of the project files to CRLF, even in the
|
|
"Unix" tar distributions (Cosmin).
|
|
Made png_get_int_32 and png_save_int_32 always available (Cosmin).
|
|
Updated scripts/pngos2.def, scripts/pngw32.def and projects/wince/png32ce.def
|
|
with the newly exported functions.
|
|
Eliminated distributions without the "configure" script.
|
|
Updated INSTALL instructions.
|
|
|
|
Version 1.2.9beta3 [February 24, 2006]
|
|
Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp
|
|
Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler)
|
|
Removed reference to pngasmrd.h from Makefile.am
|
|
Renamed CHANGES to ChangeLog.
|
|
Renamed LICENSE to COPYING.
|
|
Renamed ANNOUNCE to NEWS.
|
|
Created AUTHORS file.
|
|
|
|
Version 1.2.9beta4 [March 3, 2006]
|
|
Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac
|
|
Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING.
|
|
Removed newline from the end of some error and warning messages.
|
|
Removed test for sqrt() from configure.ac and configure.
|
|
Made swap tables in pngtrans.c PNG_CONST (Carlo Bramix).
|
|
Disabled default iTXt support that was inadvertently enabled in
|
|
libpng-1.2.9beta1.
|
|
Added "OS2" to list of systems that don't need underscores, in pnggccrd.c
|
|
Removed libpng version and date from *.c files.
|
|
|
|
Version 1.2.9beta5 [March 4, 2006]
|
|
Removed trailing blanks from source files.
|
|
Put version and date of latest change in each source file, and changed
|
|
copyright year accordingly.
|
|
More cleanup of configure.ac, Makefile.am, and associated scripts.
|
|
Restored scripts/makefile.elf which was inadvertently deleted.
|
|
|
|
Version 1.2.9beta6 [March 6, 2006]
|
|
Fixed typo (RELEASE) in configuration files.
|
|
|
|
Version 1.2.9beta7 [March 7, 2006]
|
|
Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
|
|
Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s()
|
|
in png.h.
|
|
Updated makefile.elf as suggested by debian.
|
|
Made cosmetic changes to some makefiles, adding LN_SF and other macros.
|
|
Made some makefiles accept "exec_prefix".
|
|
|
|
Version 1.2.9beta8 [March 9, 2006]
|
|
Fixed some "#if defined (..." which should be "#if defined(..."
|
|
Bug introduced in libpng-1.2.8.
|
|
Fixed inconsistency in definition of png_default_read_data()
|
|
Restored blank that was lost from makefile.sggcc "clean" target in beta7.
|
|
Revised calculation of "current" and "major" for irix in ltmain.sh
|
|
Changed "mkdir" to "MKDIR_P" in some makefiles.
|
|
Separated PNG_EXPAND and PNG_EXPAND_tRNS.
|
|
Added png_set_expand_gray_1_2_4_to_8() and deprecated
|
|
png_set_gray_1_2_4_to_8() which also expands tRNS to alpha.
|
|
|
|
Version 1.2.9beta9 [March 10, 2006]
|
|
Include "config.h" in pngconf.h when available.
|
|
Added some checks for NULL png_ptr or NULL info_ptr (timeless)
|
|
|
|
Version 1.2.9beta10 [March 20, 2006]
|
|
Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin)
|
|
Made pnggccrd.c PIC-compliant (Christian Aichinger).
|
|
Added makefile.mingw (Wolfgang Glas).
|
|
Revised pngconf.h MMX checking.
|
|
|
|
Version 1.2.9beta11 [March 22, 2006]
|
|
Fixed out-of-order declaration in pngwrite.c that was introduced in beta9
|
|
Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros.
|
|
|
|
Version 1.2.9rc1 [March 31, 2006]
|
|
Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin).
|
|
Removed nonsensical assertion check from pngtest.c (Cosmin).
|
|
|
|
Version 1.2.9 [April 14, 2006]
|
|
Revised makefile.beos and added "none" selector in ltmain.sh
|
|
|
|
Version 1.2.10beta1 [April 15, 2006]
|
|
Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
|
|
-DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
|
|
to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.
|
|
|
|
Version 1.2.10beta2 [April 15, 2006]
|
|
Manually updated Makefile.in and configure. Changed png_conf.h.in
|
|
back to config.h.
|
|
|
|
Version 1.2.10beta3 [April 15, 2006]
|
|
Change png_conf.h back to config.h in pngconf.h.
|
|
|
|
Version 1.2.10beta4 [April 16, 2006]
|
|
Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.
|
|
|
|
Version 1.2.10beta5 [April 16, 2006]
|
|
Added a configure check for compiling assembler code in pnggccrd.c
|
|
|
|
Version 1.2.10beta6 [April 17, 2006]
|
|
Revised the configure check for pnggccrd.c
|
|
Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
|
|
Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
|
|
|
|
Version 1.2.10beta7 [April 18, 2006]
|
|
Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
|
|
|
|
Version 1.2.10rc1 [April 19, 2006]
|
|
Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
|
|
Fixed "LN_FS" typo in makefile.sco and makefile.solaris.
|
|
|
|
Version 1.2.10rc2 [April 20, 2006]
|
|
Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
|
|
in configure.ac and configure
|
|
Made the configure warning about versioned symbols less arrogant.
|
|
|
|
Version 1.2.10rc3 [April 21, 2006]
|
|
Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
|
|
writing an embedded PNG without the 8-byte signature.
|
|
Revised makefiles and configure to avoid making links to libpng.so.*
|
|
|
|
Version 1.2.10 [April 23, 2006]
|
|
Reverted configure to "rc2" state.
|
|
|
|
Version 1.2.11beta1 [May 31, 2006]
|
|
scripts/libpng.pc.in contained "configure" style version info and would
|
|
not work with makefiles.
|
|
The shared-library makefiles were linking to libpng.so.0 instead of
|
|
libpng.so.3 compatibility as the library.
|
|
|
|
Version 1.2.11beta2 [June 2, 2006]
|
|
Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
|
|
buffer overflow.
|
|
Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb)
|
|
|
|
Version 1.2.11beta3 [June 5, 2006]
|
|
Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
|
|
Removed the accidental leftover Makefile.in~ (Cosmin).
|
|
Avoided potential buffer overflow and optimized buffer in
|
|
png_write_sCAL(), png_write_sCAL_s() (Cosmin).
|
|
Removed the include directories and libraries from CFLAGS and LDFLAGS
|
|
in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
|
|
|
|
Version 1.2.11beta4 [June 6, 2006]
|
|
Allow zero-length IDAT chunks after the entire zlib datastream, but not
|
|
after another intervening chunk type.
|
|
|
|
Version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
|
|
Deleted extraneous square brackets from [config.h] in configure.ac
|
|
|
|
Version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
|
|
Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
|
|
Revised INSTALL and autogen.sh
|
|
Fixed typo in several makefiles (-W1 should be -Wl)
|
|
Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
|
|
|
|
Version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
|
|
Removed the new typedefs for 64-bit systems (delay until version 1.4.0)
|
|
Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
|
|
reading out of bounds.
|
|
|
|
Version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
|
|
Really removed the new typedefs for 64-bit systems.
|
|
|
|
Version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
|
|
Removed png_sig_bytes entry from scripts/pngw32.def
|
|
|
|
Version 1.0.19, 1.2.11 [June 26, 2006]
|
|
None.
|
|
|
|
Version 1.0.20, 1.2.12 [June 27, 2006]
|
|
Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
|
|
buffer overflow.
|
|
|
|
Version 1.2.13beta1 [October 2, 2006]
|
|
Removed AC_FUNC_MALLOC from configure.ac
|
|
Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
|
|
Change "logical" to "bitwise" throughout documentation.
|
|
Detect and fix attempt to write wrong iCCP profile length (CVE-2006-7244)
|
|
|
|
Version 1.0.21, 1.2.13 [November 14, 2006]
|
|
Fix potential buffer overflow in sPLT chunk handler.
|
|
Fix Makefile.am to not try to link to noexistent files.
|
|
Check all exported functions for NULL png_ptr.
|
|
|
|
Version 1.2.14beta1 [November 17, 2006]
|
|
Relocated three misplaced tests for NULL png_ptr.
|
|
Built Makefile.in with automake-1.9.6 instead of 1.9.2.
|
|
Build configure with autoconf-2.60 instead of 2.59
|
|
|
|
Version 1.2.14beta2 [November 17, 2006]
|
|
Added some typecasts in png_zalloc().
|
|
|
|
Version 1.2.14rc1 [November 20, 2006]
|
|
Changed "strtod" to "png_strtod" in pngrutil.c
|
|
|
|
Version 1.0.22, 1.2.14 [November 27, 2006]
|
|
Added missing "$(srcdir)" in Makefile.am and Makefile.in
|
|
|
|
Version 1.2.15beta1 [December 3, 2006]
|
|
Generated configure with autoconf-2.61 instead of 2.60
|
|
Revised configure.ac to update libpng.pc and libpng-config.
|
|
|
|
Version 1.2.15beta2 [December 3, 2006]
|
|
Always export MMX asm functions, just stubs if not building pnggccrd.c
|
|
|
|
Version 1.2.15beta3 [December 4, 2006]
|
|
Add "png_bytep" typecast to profile while calculating length in pngwutil.c
|
|
|
|
Version 1.2.15beta4 [December 7, 2006]
|
|
Added scripts/CMakeLists.txt
|
|
Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta
|
|
|
|
Version 1.2.15beta5 [December 7, 2006]
|
|
Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c
|
|
Revised scripts/CMakeLists.txt
|
|
|
|
Version 1.2.15beta6 [December 13, 2006]
|
|
Revised scripts/CMakeLists.txt and configure.ac
|
|
|
|
Version 1.2.15rc1 [December 18, 2006]
|
|
Revised scripts/CMakeLists.txt
|
|
|
|
Version 1.2.15rc2 [December 21, 2006]
|
|
Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
|
|
Added scripts/makefile.nommx
|
|
|
|
Version 1.2.15rc3 [December 25, 2006]
|
|
Fixed shared library numbering error that was introduced in 1.2.15beta6.
|
|
|
|
Version 1.2.15rc4 [December 27, 2006]
|
|
Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
|
|
|
|
Version 1.2.15rc5 [December 31, 2006]
|
|
Revised handling of rgb_to_gray.
|
|
|
|
Version 1.2.15 [January 5, 2007]
|
|
Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
|
|
|
|
Version 1.2.16beta1 [January 6, 2007]
|
|
Fix bugs in makefile.nommx
|
|
|
|
Version 1.2.16beta2 [January 16, 2007]
|
|
Revised scripts/CMakeLists.txt
|
|
|
|
Version 1.2.16 [January 31, 2007]
|
|
No changes.
|
|
|
|
Version 1.2.17beta1 [March 6, 2007]
|
|
Revised scripts/CMakeLists.txt to install both shared and static libraries.
|
|
Deleted a redundant line from pngset.c.
|
|
|
|
Version 1.2.17beta2 [April 26, 2007]
|
|
Relocated misplaced test for png_ptr == NULL in pngpread.c
|
|
Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN
|
|
flags.
|
|
Changed remaining instances of PNG_ASSEMBLER_* to PNG_MMX_*
|
|
Added pngerror() when write_IHDR fails in deflateInit2().
|
|
Added "const" to some array declarations.
|
|
Mention examples of libpng usage in the libpng*.txt and libpng.3 documents.
|
|
|
|
Version 1.2.17rc1 [May 4, 2007]
|
|
No changes.
|
|
|
|
Version 1.2.17rc2 [May 8, 2007]
|
|
Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications
|
|
calling set_unknown_chunk_location() need them.
|
|
Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in
|
|
png_set_expand_gray_1_2_4_to_8().
|
|
Added png_ptr->unknown_chunk to hold working unknown chunk data, so it
|
|
can be free'ed in case of error. Revised unknown chunk handling in
|
|
pngrutil.c and pngpread.c to use this structure.
|
|
|
|
Version 1.2.17rc3 [May 8, 2007]
|
|
Revised symbol-handling in configure script.
|
|
|
|
Version 1.2.17rc4 [May 10, 2007]
|
|
Revised unknown chunk handling to avoid storing unknown critical chunks.
|
|
|
|
Version 1.0.25 [May 15, 2007]
|
|
Version 1.2.17 [May 15, 2007]
|
|
Added "png_ptr->num_trans=0" before error return in png_handle_tRNS,
|
|
to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664)
|
|
|
|
Version 1.0.26 [May 15, 2007]
|
|
Version 1.2.18 [May 15, 2007]
|
|
Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script
|
|
|
|
Version 1.2.19beta1 [May 18, 2007]
|
|
Changed "const static" to "static PNG_CONST" everywhere, mostly undoing
|
|
change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST"
|
|
Changed some handling of unused parameters, to avoid compiler warnings.
|
|
"if (unused == NULL) return;" becomes "unused = unused".
|
|
|
|
Version 1.2.19beta2 [May 18, 2007]
|
|
Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier)
|
|
|
|
Version 1.2.19beta3 [May 19, 2007]
|
|
Add some "png_byte" typecasts in png_check_keyword() and write new_key
|
|
instead of key in zTXt chunk (Kevin Ryde).
|
|
|
|
Version 1.2.19beta4 [May 21, 2007]
|
|
Add png_snprintf() function and use it in place of sprint() for improved
|
|
defense against buffer overflows.
|
|
|
|
Version 1.2.19beta5 [May 21, 2007]
|
|
Fixed png_handle_tRNS() to only use the valid bits of tRNS value.
|
|
Changed handling of more unused parameters, to avoid compiler warnings.
|
|
Removed some PNG_CONST in pngwutil.c to avoid compiler warnings.
|
|
|
|
Version 1.2.19beta6 [May 22, 2007]
|
|
Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c
|
|
Added a special "_MSC_VER" case that defines png_snprintf to _snprintf
|
|
|
|
Version 1.2.19beta7 [May 22, 2007]
|
|
Squelched png_squelch_warnings() in pnggccrd.c and added
|
|
an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
|
|
the warnings that png_squelch_warnings was squelching.
|
|
|
|
Version 1.2.19beta8 [May 22, 2007]
|
|
Removed __MMX__ from test in pngconf.h.
|
|
|
|
Version 1.2.19beta9 [May 23, 2007]
|
|
Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro.
|
|
Revised png_squelch_warnings() so it might work.
|
|
Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86.
|
|
|
|
Version 1.2.19beta10 [May 24, 2007]
|
|
Resquelched png_squelch_warnings(), use "__attribute__((used))" instead.
|
|
|
|
Version 1.4.0beta1 [April 20, 2006]
|
|
Enabled iTXt support (changes png_struct, thus requires so-number change).
|
|
Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
|
|
Eliminated PNG_1_0_X and PNG_1_2_X macros.
|
|
Removed deprecated functions png_read_init, png_write_init, png_info_init,
|
|
png_permit_empty_plte, png_set_gray_1_2_4_to_8, png_check_sig, and
|
|
removed the deprecated macro PNG_MAX_UINT.
|
|
Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h
|
|
Removed many WIN32_WCE #ifdefs (Cosmin).
|
|
Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
|
|
Replaced sprintf() with png_sprintf() (Simon-Pierre)
|
|
|
|
Version 1.4.0beta2 [April 20, 2006]
|
|
Revised makefiles and configure to avoid making links to libpng.so.*
|
|
Moved some leftover MMX-related defines from pngconf.h to pngintrn.h
|
|
Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
|
|
|
|
Version 1.4.0beta3 [May 10, 2006]
|
|
Updated scripts/pngw32.def to comment out MMX functions.
|
|
Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
|
|
Scripts/libpng.pc.in contained "configure" style version info and would
|
|
not work with makefiles.
|
|
Revised pngconf.h and added pngconf.h.in, so makefiles and configure can
|
|
pass defines to libpng and applications.
|
|
|
|
Version 1.4.0beta4 [May 11, 2006]
|
|
Revised configure.ac, Makefile.am, and many of the makefiles to write
|
|
their defines in pngconf.h.
|
|
|
|
Version 1.4.0beta5 [May 15, 2006]
|
|
Added a missing semicolon in Makefile.am and Makefile.in
|
|
Deleted extraneous square brackets from configure.ac
|
|
|
|
Version 1.4.0beta6 [June 2, 2006]
|
|
Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
|
|
buffer overflow.
|
|
Changed sonum from 0 to 1.
|
|
Removed unused prototype for png_check_sig() from png.h
|
|
|
|
Version 1.4.0beta7 [June 16, 2006]
|
|
Exported png_write_sig (Cosmin).
|
|
Optimized buffer in png_handle_cHRM() (Cosmin).
|
|
Set pHYs = 2835 x 2835 pixels per meter, and added
|
|
sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin).
|
|
Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
|
|
Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
|
|
Added "(unsigned long)" typecast on png_uint_32 variables in printf lists.
|
|
|
|
Version 1.4.0beta8 [June 22, 2006]
|
|
Added demonstration of user chunk support in pngtest.c, to support the
|
|
public sTER chunk and a private vpAg chunk.
|
|
|
|
Version 1.4.0beta9 [July 3, 2006]
|
|
Removed ordinals from scripts/pngw32.def and removed png_info_int and
|
|
png_set_gray_1_2_4_to_8 entries.
|
|
Inline call of png_get_uint_32() in png_get_uint_31().
|
|
Use png_get_uint_31() to get vpAg width and height in pngtest.c
|
|
Removed WINCE and Netware projects.
|
|
Removed standalone Y2KINFO file.
|
|
|
|
Version 1.4.0beta10 [July 12, 2006]
|
|
Eliminated automatic copy of pngconf.h to pngconf.h.in from configure and
|
|
some makefiles, because it was not working reliably. Instead, distribute
|
|
pngconf.h.in along with pngconf.h and cause configure and some of the
|
|
makefiles to update pngconf.h from pngconf.h.in.
|
|
Added pngconf.h to DEPENDENCIES in Makefile.am
|
|
|
|
Version 1.4.0beta11 [August 19, 2006]
|
|
Removed AC_FUNC_MALLOC from configure.ac.
|
|
Added a warning when writing iCCP profile with mismatched profile length.
|
|
Patched pnggccrd.c to assemble on x86_64 platforms.
|
|
Moved chunk header reading into a separate function png_read_chunk_header()
|
|
in pngrutil.c. The chunk header (len+sig) is now serialized in a single
|
|
operation (Cosmin).
|
|
Implemented support for I/O states. Added png_ptr member io_state, and
|
|
functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
|
|
(Cosmin).
|
|
Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin).
|
|
Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin).
|
|
Removed the include directories and libraries from CFLAGS and LDFLAGS
|
|
in scripts/makefile.gcc (Cosmin).
|
|
Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin).
|
|
Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin).
|
|
Added pngintrn.h to the Visual C++ projects (Cosmin).
|
|
Removed scripts/list (Cosmin).
|
|
Updated copyright year in scripts/pngwin.def (Cosmin).
|
|
Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin).
|
|
Disallowed the user to redefine png_size_t, and enforced a consistent use
|
|
of png_size_t across libpng (Cosmin).
|
|
Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends
|
|
to png_size_t (Cosmin).
|
|
Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin).
|
|
Removed some unnecessary type casts (Cosmin).
|
|
Changed prototype of png_get_compression_buffer_size() and
|
|
png_set_compression_buffer_size() to work with png_size_t instead of
|
|
png_uint_32 (Cosmin).
|
|
Removed png_memcpy_check() and png_memset_check() (Cosmin).
|
|
Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin).
|
|
Clarified that png_zalloc() does not clear the allocated memory,
|
|
and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin).
|
|
Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in
|
|
pngconf.h, and used it in all memory allocation functions (Cosmin).
|
|
Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file
|
|
mentioning that the symbols declared in that file are private, and
|
|
updated the scripts and the Visual C++ projects accordingly (Cosmin).
|
|
Removed circular references between pngconf.h and pngconf.h.in in
|
|
scripts/makefile.vc*win32 (Cosmin).
|
|
Removing trailing '.' from the warning and error messages (Cosmin).
|
|
Added pngdefs.h that is built by makefile or configure, instead of
|
|
pngconf.h.in (Glenn).
|
|
Detect and fix attempt to write wrong iCCP profile length.
|
|
|
|
Version 1.4.0beta12 [October 19, 2006]
|
|
Changed "logical" to "bitwise" in the documentation.
|
|
Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
|
|
Add a typecast to stifle compiler warning in pngrutil.c
|
|
|
|
Version 1.4.0beta13 [November 10, 2006]
|
|
Fix potential buffer overflow in sPLT chunk handler.
|
|
Fix Makefile.am to not try to link to noexistent files.
|
|
|
|
Version 1.4.0beta14 [November 15, 2006]
|
|
Check all exported functions for NULL png_ptr.
|
|
|
|
Version 1.4.0beta15 [November 17, 2006]
|
|
Relocated two misplaced tests for NULL png_ptr.
|
|
Built Makefile.in with automake-1.9.6 instead of 1.9.2.
|
|
Build configure with autoconf-2.60 instead of 2.59
|
|
Add "install: all" in Makefile.am so "configure; make install" will work.
|
|
|
|
Version 1.4.0beta16 [November 17, 2006]
|
|
Added a typecast in png_zalloc().
|
|
|
|
Version 1.4.0beta17 [December 4, 2006]
|
|
Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c
|
|
Add "png_bytep" typecast to profile while calculating length in pngwutil.c
|
|
|
|
Version 1.4.0beta18 [December 7, 2006]
|
|
Added scripts/CMakeLists.txt
|
|
|
|
Version 1.4.0beta19 [May 16, 2007]
|
|
Revised scripts/CMakeLists.txt
|
|
Rebuilt configure and Makefile.in with newer tools.
|
|
Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
|
|
Added scripts/makefile.nommx
|
|
|
|
Version 1.4.0beta20 [July 9, 2008]
|
|
Moved several PNG_HAVE_* macros from pngpriv.h to png.h because applications
|
|
calling set_unknown_chunk_location() need them.
|
|
Moved several macro definitions from pngpriv.h to pngconf.h
|
|
Merge with changes to the 1.2.X branch, as of 1.2.30beta04.
|
|
Deleted all use of the MMX assembler code and Intel-licensed optimizations.
|
|
Revised makefile.mingw
|
|
|
|
Version 1.4.0beta21 [July 21, 2008]
|
|
Moved local array "chunkdata" from pngrutil.c to the png_struct, so
|
|
it will be freed by png_read_destroy() in case of a read error (Kurt
|
|
Christensen).
|
|
|
|
Version 1.4.0beta22 [July 21, 2008]
|
|
Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking.
|
|
|
|
Version 1.4.0beta23 [July 22, 2008]
|
|
Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in
|
|
png_decompress_chunk().
|
|
|
|
Version 1.4.0beta24 [July 25, 2008]
|
|
Change all remaining "chunkdata" to "png_ptr->chunkdata" in
|
|
png_decompress_chunk(), and remove "chunkdata" from parameter list.
|
|
Put a call to png_check_chunk_name() in png_read_chunk_header().
|
|
Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte.
|
|
Removed two calls to png_check_chunk_name() occuring later in the process.
|
|
Define PNG_NO_ERROR_NUMBERS by default in pngconf.h
|
|
|
|
Version 1.4.0beta25 [July 30, 2008]
|
|
Added a call to png_check_chunk_name() in pngpread.c
|
|
Reverted png_check_chunk_name() to accept a name with a lowercase 3rd byte.
|
|
Added png_push_have_buffer() function to pngpread.c
|
|
Eliminated PNG_BIG_ENDIAN_SUPPORTED and associated png_get_* macros.
|
|
Made inline expansion of png_get_*() optional with PNG_USE_READ_MACROS.
|
|
Eliminated all PNG_USELESS_TESTS and PNG_CORRECT_PALETTE_SUPPORTED code.
|
|
Synced contrib directory and configure files with libpng-1.2.30beta06.
|
|
Eliminated no-longer-used pngdefs.h (but it's still built in the makefiles)
|
|
Relocated a misplaced "#endif /* PNG_NO_WRITE_FILTER */" in pngwutil.c
|
|
|
|
Version 1.4.0beta26 [August 4, 2008]
|
|
Removed png_push_have_buffer() function in pngpread.c. It increased the
|
|
compiled library size slightly.
|
|
Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta)
|
|
Declared png_ptr "volatile" in pngread.c and pngwrite.c to avoid warnings.
|
|
Updated contrib/visupng/cexcept.h to version 2.0.1
|
|
Added PNG_LITERAL_CHARACTER macros for #, [, and ].
|
|
|
|
Version 1.4.0beta27 [August 5, 2008]
|
|
Revised usage of PNG_LITERAL_SHARP in pngerror.c.
|
|
Moved newline character from individual png_debug messages into the
|
|
png_debug macros.
|
|
Allow user to #define their own png_debug, png_debug1, and png_debug2.
|
|
|
|
Version 1.4.0beta28 [August 5, 2008]
|
|
Revised usage of PNG_LITERAL_SHARP in pngerror.c.
|
|
Added PNG_STRING_NEWLINE macro
|
|
|
|
Version 1.4.0beta29 [August 9, 2008]
|
|
Revised usage of PNG_STRING_NEWLINE to work on non-ISO compilers.
|
|
Added PNG_STRING_COPYRIGHT macro.
|
|
Added non-ISO versions of png_debug macros.
|
|
|
|
Version 1.4.0beta30 [August 14, 2008]
|
|
Added premultiplied alpha feature (Volker Wiendl).
|
|
|
|
Version 1.4.0beta31 [August 18, 2008]
|
|
Moved png_set_premultiply_alpha from pngtrans.c to pngrtran.c
|
|
Removed extra crc check at the end of png_handle_cHRM(). Bug introduced
|
|
in libpng-1.4.0beta20.
|
|
|
|
Version 1.4.0beta32 [August 19, 2008]
|
|
Added PNG_WRITE_FLUSH_SUPPORTED block around new png_flush() call.
|
|
Revised PNG_NO_STDIO version of png_write_flush()
|
|
|
|
Version 1.4.0beta33 [August 20, 2008]
|
|
Added png_get|set_chunk_cache_max() to limit the total number of sPLT,
|
|
text, and unknown chunks that can be stored.
|
|
|
|
Version 1.4.0beta34 [September 6, 2008]
|
|
Shortened tIME_string to 29 bytes in pngtest.c
|
|
Fixed off-by-one error introduced in png_push_read_zTXt() function in
|
|
libpng-1.2.30beta04/pngpread.c (Harald van Dijk)
|
|
|
|
Version 1.4.0beta35 [October 6, 2008]
|
|
Changed "trans_values" to "trans_color".
|
|
Changed so-number from 0 to 14. Some OS do not like 0.
|
|
Revised makefile.darwin to fix shared library numbering.
|
|
Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8()
|
|
in example.c (debian bug report)
|
|
|
|
Version 1.4.0beta36 [October 25, 2008]
|
|
Sync with tEXt vulnerability fix in libpng-1.2.33rc02.
|
|
|
|
Version 1.4.0beta37 [November 13, 2008]
|
|
Added png_check_cHRM in png.c and moved checking from pngget.c, pngrutil.c,
|
|
and pngwrite.c
|
|
|
|
Version 1.4.0beta38 [November 22, 2008]
|
|
Added check for zero-area RGB cHRM triangle in png_check_cHRM() and
|
|
png_check_cHRM_fixed().
|
|
|
|
Version 1.4.0beta39 [November 23, 2008]
|
|
Revised png_warning() to write its message on standard output by default
|
|
when warning_fn is NULL.
|
|
|
|
Version 1.4.0beta40 [November 24, 2008]
|
|
Eliminated png_check_cHRM(). Instead, always use png_check_cHRM_fixed().
|
|
In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
|
|
check for all-zero coordinates that is detected by the triangle check.
|
|
|
|
Version 1.4.0beta41 [November 26, 2008]
|
|
Fixed string vs pointer-to-string error in png_check_keyword().
|
|
Rearranged test expressions in png_check_cHRM_fixed() to avoid internal
|
|
overflows.
|
|
Added PNG_NO_CHECK_cHRM conditional.
|
|
|
|
Version 1.4.0beta42, 43 [December 1, 2008]
|
|
Merge png_debug with version 1.2.34beta04.
|
|
|
|
Version 1.4.0beta44 [December 6, 2008]
|
|
Removed redundant check for key==NULL before calling png_check_keyword()
|
|
to ensure that new_key gets initialized and removed extra warning
|
|
(Merge with version 1.2.34beta05 -- Arvan Pritchard).
|
|
|
|
Version 1.4.0beta45 [December 9, 2008]
|
|
In png_write_png(), respect the placement of the filler bytes in an earlier
|
|
call to png_set_filler() (Jim Barry).
|
|
|
|
Version 1.4.0beta46 [December 10, 2008]
|
|
Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and
|
|
PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated
|
|
PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
|
|
|
|
Version 1.4.0beta47 [December 15, 2008]
|
|
Support for dithering was disabled by default, because it has never
|
|
been well tested and doesn't work very well. The code has not
|
|
been removed, however, and can be enabled by building libpng with
|
|
PNG_READ_DITHER_SUPPORTED defined.
|
|
|
|
Version 1.4.0beta48 [February 14, 2009]
|
|
Added new exported function png_calloc().
|
|
Combined several instances of png_malloc(); png_memset() into png_calloc().
|
|
Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
|
|
but was never defined.
|
|
|
|
Version 1.4.0beta49 [February 28, 2009]
|
|
Added png_fileno() macro to pngconf.h, used in pngwio.c
|
|
Corrected order of #ifdef's in png_debug definition in png.h
|
|
Fixed bug introduced in libpng-1.4.0beta48 with the memset arguments
|
|
for pcal_params.
|
|
Fixed order of #ifdef directives in the png_debug defines in png.h
|
|
(bug introduced in libpng-1.2.34/1.4.0beta29).
|
|
Revised comments in png_set_read_fn() and png_set_write_fn().
|
|
|
|
Version 1.4.0beta50 [March 18, 2009]
|
|
Use png_calloc() instead of png_malloc() to allocate big_row_buf when
|
|
reading an interlaced file, to avoid a possible UMR.
|
|
Undid revision of PNG_NO_STDIO version of png_write_flush(). Users
|
|
having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined
|
|
or supply their own flush_fn() replacement.
|
|
Revised libpng*.txt and png.h documentation about use of png_write_flush()
|
|
and png_set_write_fn().
|
|
Removed fflush() from pngtest.c.
|
|
Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
|
|
|
|
Version 1.4.0beta51 [March 21, 2009]
|
|
Removed new png_fileno() macro from pngconf.h .
|
|
|
|
Version 1.4.0beta52 [March 27, 2009]
|
|
Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
|
|
This avoids building 16-bit gamma tables unnecessarily.
|
|
Removed fflush() from pngtest.c.
|
|
Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
|
|
Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
|
|
|
|
Version 1.4.0beta53 [April 1, 2009]
|
|
Removed some remaining MMX macros from pngpriv.h
|
|
Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
|
|
|
|
Version 1.4.0beta54 [April 13, 2009]
|
|
Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow
|
|
application code writers to bypass the check for multiple inclusion
|
|
of setjmp.h when they know that it is safe to ignore the situation.
|
|
Eliminated internal use of setjmp() in pngread.c and pngwrite.c
|
|
Reordered ancillary chunks in pngtest.png to be the same as what
|
|
pngtest now produces, and made some cosmetic changes to pngtest output.
|
|
Eliminated deprecated png_read_init_3() and png_write_init_3() functions.
|
|
|
|
Version 1.4.0beta55 [April 15, 2009]
|
|
Simplified error handling in pngread.c and pngwrite.c by putting
|
|
the new png_read_cleanup() and png_write_cleanup() functions inline.
|
|
|
|
Version 1.4.0beta56 [April 25, 2009]
|
|
Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress
|
|
"shadowed declaration" warning from gcc-4.3.3.
|
|
Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration"
|
|
warning about a global "gamma" variable in math.h on some platforms.
|
|
|
|
Version 1.4.0beta57 [May 2, 2009]
|
|
Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
|
|
but was never defined (again).
|
|
Rebuilt configure scripts with autoconf-2.63 instead of 2.62
|
|
Removed pngprefs.h and MMX from makefiles
|
|
|
|
Version 1.4.0beta58 [May 14, 2009]
|
|
Changed pngw32.def to pngwin.def in makefile.mingw (typo was introduced
|
|
in beta57).
|
|
Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
|
|
|
|
Version 1.4.0beta59 [May 15, 2009]
|
|
Reformated sources in libpng style (3-space intentation, comment format)
|
|
Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG)
|
|
Added sections about the git repository and our coding style to the
|
|
documentation
|
|
Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
|
|
|
|
Version 1.4.0beta60 [May 19, 2009]
|
|
Conditionally compile png_read_finish_row() which is not used by
|
|
progressive readers.
|
|
Added contrib/pngminim/preader to demonstrate building minimal progressive
|
|
decoder, based on contrib/gregbook with embedded libpng and zlib.
|
|
|
|
Version 1.4.0beta61 [May 20, 2009]
|
|
In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
|
|
is only one makefile in those directories, and revised the README files
|
|
accordingly.
|
|
More reformatting of comments, mostly to capitalize sentences.
|
|
|
|
Version 1.4.0beta62 [June 2, 2009]
|
|
Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
|
|
and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
|
|
Reformatted several remaining "else statement" into two lines.
|
|
Added a section to the libpng documentation about using png_get_io_ptr()
|
|
in configure scripts to detect the presence of libpng.
|
|
|
|
Version 1.4.0beta63 [June 15, 2009]
|
|
Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
|
|
multiple times and to specify the sample order in the tRNS chunk,
|
|
because the ISO PNG specification has a typo in the tRNS table.
|
|
Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
|
|
PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
|
|
available for ignoring known chunks even when not saving unknown chunks.
|
|
Adopted preference for consistent use of "#ifdef" and "#ifndef" versus
|
|
"#if defined()" and "if !defined()" where possible.
|
|
|
|
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.
|
|
|
|
Version 1.4.0beta65 [June 26, 2009]
|
|
Added a reference to the libpng license in each file.
|
|
|
|
Version 1.4.0beta66 [June 27, 2009]
|
|
Refer to the libpng license instead of the libpng license in each file.
|
|
|
|
Version 1.4.0beta67 [July 6, 2009]
|
|
Relocated INVERT_ALPHA within png_read_png() and png_write_png().
|
|
Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
|
|
Added an "xcode" project to the projects directory (Alam Arias).
|
|
|
|
Version 1.4.0beta68 [July 19, 2009]
|
|
Avoid some tests in filter selection in pngwutil.c
|
|
|
|
Version 1.4.0beta69 [July 25, 2009]
|
|
Simplified the new filter-selection test. This runs faster in the
|
|
common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases.
|
|
Removed extraneous declaration from the new call to png_read_gray_to_rgb()
|
|
(bug introduced in libpng-1.4.0beta67).
|
|
Fixed up xcode project (Alam Arias)
|
|
Added a prototype for png_64bit_product() in png.c
|
|
|
|
Version 1.4.0beta70 [July 27, 2009]
|
|
Avoid a possible NULL dereference in debug build, in png_set_text_2().
|
|
(bug introduced in libpng-0.95, discovered by Evan Rouault)
|
|
|
|
Version 1.4.0beta71 [July 29, 2009]
|
|
Rebuilt configure scripts with autoconf-2.64.
|
|
|
|
Version 1.4.0beta72 [August 1, 2009]
|
|
Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec
|
|
from <http://tukaani.org/xz>.
|
|
|
|
Version 1.4.0beta73 [August 1, 2009]
|
|
Reject attempt to write iCCP chunk with negative embedded profile length
|
|
(JD Chen) (CVE-2009-5063).
|
|
|
|
Version 1.4.0beta74 [August 8, 2009]
|
|
Changed png_ptr and info_ptr member "trans" to "trans_alpha".
|
|
|
|
Version 1.4.0beta75 [August 21, 2009]
|
|
Removed an extra png_debug() recently added to png_write_find_filter().
|
|
Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
|
|
|
|
Version 1.4.0beta76 [August 22, 2009]
|
|
Moved an incorrectly located test in png_read_row() in pngread.c
|
|
|
|
Version 1.4.0beta77 [August 27, 2009]
|
|
Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
|
|
and the "noconfig" files from the distribution.
|
|
Moved CMakeLists.txt from scripts into the main libpng directory.
|
|
Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
|
|
|
|
Version 1.4.0beta78 [August 31, 2009]
|
|
Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
|
|
Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
|
|
Use png_malloc plus a loop instead of png_calloc() to initialize
|
|
row_pointers in png_read_png().
|
|
|
|
Version 1.4.0beta79 [September 1, 2009]
|
|
Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
|
|
Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
|
|
|
|
Version 1.4.0beta80 [September 17, 2009]
|
|
Removed scripts/libpng.icc
|
|
Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
|
|
(Dennis Gustafsson)
|
|
Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ")
|
|
|
|
Version 1.4.0beta81 [September 23, 2009]
|
|
Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
|
|
Expanded TAB characters in pngrtran.c
|
|
Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
|
|
compiler complaints about doubly declaring things "const".
|
|
Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
|
|
Eliminated unused png_ptr->row_buf_size
|
|
|
|
Version 1.4.0beta82 [September 25, 2009]
|
|
Moved redundant IHDR checking into new png_check_IHDR() in png.c
|
|
and report all errors found in the IHDR data.
|
|
Eliminated useless call to png_check_cHRM() from pngset.c
|
|
|
|
Version 1.4.0beta83 [September 25, 2009]
|
|
Revised png_check_IHDR() to eliminate bogus complaint about filter_type.
|
|
|
|
Version 1.4.0beta84 [September 30, 2009]
|
|
Fixed some inconsistent indentation in pngconf.h
|
|
Revised png_check_IHDR() to add a test for width variable less than 32-bit.
|
|
|
|
Version 1.4.0beta85 [October 1, 2009]
|
|
Revised png_check_IHDR() again, to check info_ptr members instead of
|
|
the contents of the returned parameters.
|
|
|
|
Version 1.4.0beta86 [October 9, 2009]
|
|
Updated the "xcode" project (Alam Arias).
|
|
Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
|
|
|
|
Version 1.4.0rc01 [October 19, 2009]
|
|
Trivial cosmetic changes.
|
|
|
|
Version 1.4.0beta87 [October 30, 2009]
|
|
Moved version 1.4.0 back into beta.
|
|
|
|
Version 1.4.0beta88 [October 30, 2009]
|
|
Revised libpng*.txt section about differences between 1.2.x and 1.4.0
|
|
because most of the new features have now been ported back to 1.2.41
|
|
|
|
Version 1.4.0beta89 [November 1, 2009]
|
|
More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
|
|
Removed a harmless extra png_set_invert_alpha() from pngwrite.c
|
|
Apply png_user_chunk_cache_max within png_decompress_chunk().
|
|
Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
|
|
|
|
Version 1.4.0beta90 [November 2, 2009]
|
|
Removed all remaining WIN32_WCE #ifdefs except those involving the
|
|
time.h "tm" structure
|
|
|
|
Version 1.4.0beta91 [November 3, 2009]
|
|
Updated scripts/pngw32.def and projects/wince/png32ce.def
|
|
Copied projects/wince/png32ce.def to the scripts directory.
|
|
Added scripts/makefile.wce
|
|
Patched ltmain.sh for wince support.
|
|
Added PNG_CONVERT_tIME_SUPPORTED macro.
|
|
|
|
Version 1.4.0beta92 [November 4, 2009]
|
|
Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
|
|
Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
|
|
Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead
|
|
of differences from 1.2.41 to 1.4.0)
|
|
|
|
Version 1.4.0beta93 [November 7, 2009]
|
|
Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
|
|
PNG_ALLOCATED macros to detect deprecated direct access to the
|
|
png_struct or info_struct members and other deprecated usage in
|
|
applications (John Bowler).
|
|
Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
|
|
to prevent warnings about direct access to png structs by libpng
|
|
functions while building libpng. They need to be tested, especially
|
|
those using compilers other than gcc.
|
|
Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
|
|
They should work but still need to be updated to remove
|
|
references to pnggccrd.c or pngvcrd.c and ASM building.
|
|
Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
|
|
that they need to be updated, to remove references to pnggccrd.c and
|
|
pngvcrd.c and to depend on pngpriv.h
|
|
Removed three direct references to read_info_ptr members in pngtest.c
|
|
that were detected by the new PNG_DEPSTRUCT macro.
|
|
Moved the png_debug macro definitions and the png_read_destroy(),
|
|
png_write_destroy() and png_far_to_near() prototypes from png.h
|
|
to pngpriv.h (John Bowler)
|
|
Moved the synopsis lines for png_read_destroy(), png_write_destroy()
|
|
png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
|
|
|
|
Version 1.4.0beta94 [November 9, 2009]
|
|
Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
|
|
Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
|
|
Removed dependency of pngtest.o on pngpriv.h in the makefiles.
|
|
Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
|
|
|
|
Version 1.4.0beta95 [November 10, 2009]
|
|
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
|
|
Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
|
|
Changed png_check_sig() to !png_sig_cmp() in contrib programs.
|
|
Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
|
|
Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
|
|
Added dependency on pngpriv.h in contrib/pngminim/*/makefile
|
|
|
|
Version 1.4.0beta96 [November 12, 2009]
|
|
Renamed scripts/makefile.wce to scripts/makefile.cegcc
|
|
Revised Makefile.am to use libpng.sys while building libpng.so
|
|
so that only PNG_EXPORT functions are exported.
|
|
Removed the deprecated png_check_sig() function/macro.
|
|
Removed recently removed function names from scripts/*.def
|
|
Revised pngtest.png to put chunks in the same order written by pngtest
|
|
(evidently the same change made in libpng-1.0beta54 was lost).
|
|
Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
|
|
|
|
Version 1.4.0beta97 [November 13, 2009]
|
|
Restored pngtest.png to the libpng-1.4.0beta7 version.
|
|
Removed projects/beos and netware.txt; no one seems to be supporting them.
|
|
Revised Makefile.in
|
|
|
|
Version 1.4.0beta98 [November 13, 2009]
|
|
Added the "xcode" project to zip distributions,
|
|
Fixed a typo in scripts/pngwin.def introduced in beta97.
|
|
|
|
Version 1.4.0beta99 [November 14, 2009]
|
|
Moved libpng-config.in and libpng.pc-configure.in out of the scripts
|
|
directory, to libpng-config.in and libpng-pc.in, respectively, and
|
|
modified Makefile.am and configure.ac accordingly. Now "configure"
|
|
needs nothing from the "scripts" directory.
|
|
Avoid redefining PNG_CONST in pngconf.h
|
|
|
|
Version 1.4.0beta100 [November 14, 2009]
|
|
Removed ASM builds from projects/visualc6 and projects/visualc71
|
|
Removed scripts/makefile.nommx and makefile.vcawin32
|
|
Revised CMakeLists.txt to account for new location of libpng-config.in
|
|
and libpng-pc.in
|
|
Updated INSTALL to reflect removal and relocation of files.
|
|
|
|
Version 1.4.0beta101 [November 14, 2009]
|
|
Restored the binary files (*.jpg, *.png, some project files) that were
|
|
accidentally deleted from the zip and 7z distributions when the xcode
|
|
project was added.
|
|
|
|
Version 1.4.0beta102 [November 18, 2009]
|
|
Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
|
|
Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
|
|
Moved descriptions of makefiles and other scripts out of INSTALL into
|
|
scripts/README.txt
|
|
Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
|
|
|
|
Version 1.4.0beta103 [November 21, 2009]
|
|
Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
|
|
Align row_buf on 16-byte boundary in memory.
|
|
Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
|
|
to png_flush() after png_write_IEND(). See 1.4.0beta32, 1.4.0beta50
|
|
changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES. Someone
|
|
needs this feature.
|
|
Make the 'png_jmpbuf' macro expand to a call that records the correct
|
|
longjmp function as well as returning a pointer to the setjmp
|
|
jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
|
|
(John Bowler)
|
|
|
|
Version 1.4.0beta104 [November 22, 2009]
|
|
Removed png_longjmp_ptr from scripts/*.def and libpng.3
|
|
Rebuilt configure scripts with autoconf-2.65
|
|
|
|
Version 1.4.0beta105 [November 25, 2009]
|
|
Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535()
|
|
to accomplish alpha premultiplication when
|
|
PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined.
|
|
Changed "/255" to "/255.0" in background calculations to make it clear
|
|
that the 255 is used as a double.
|
|
|
|
Version 1.4.0beta106 [November 27, 2009]
|
|
Removed premultiplied alpha feature.
|
|
|
|
Version 1.4.0beta107 [December 4, 2009]
|
|
Updated README
|
|
Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
|
|
Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects.
|
|
Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
|
|
to put png.h and pngconf.h in $prefix/include, like the other scripts,
|
|
instead of in $prefix/include/libpng. Also revised makefile.sco
|
|
to put them in $prefix/include/libpng15 instead of in
|
|
$prefix/include/libpng/libpng15.
|
|
|
|
Version 1.4.0beta108 [December 11, 2009]
|
|
Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
|
|
Relocated png_do_chop() to its original position in pngrtran.c; the
|
|
change in version 1.2.41beta08 caused transparency to be handled wrong
|
|
in some 16-bit datastreams (Yusaku Sugai).
|
|
|
|
Version 1.4.0beta109 [December 13, 2009]
|
|
Added "bit_depth" parameter to the private png_build_gamma_table() function.
|
|
Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
|
|
PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
|
|
tables.
|
|
|
|
Version 1.4.0rc02 [December 20, 2009]
|
|
Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
|
|
|
|
Version 1.4.0rc03 [December 22, 2009]
|
|
Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
|
|
(revising the change in 1.4.0beta99)
|
|
|
|
Version 1.4.0rc04 [December 25, 2009]
|
|
Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
in pngset.c to be consistent with other changes in version 1.2.38.
|
|
|
|
Version 1.4.0rc05 [December 25, 2009]
|
|
Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and
|
|
Makefile.in to be consistent with changes in libpng-1.4.0rc03
|
|
|
|
Version 1.4.0rc06 [December 29, 2009]
|
|
Reverted the gamma_table changes from libpng-1.4.0beta109.
|
|
Fixed some indentation errors.
|
|
|
|
Version 1.4.0rc07 [January 1, 2010]
|
|
Revised libpng*.txt and libpng.3 about 1.2.x->1.4.x differences.
|
|
Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c
|
|
Update copyright year to 2010.
|
|
|
|
Version 1.4.0rc08 [January 2, 2010]
|
|
Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr
|
|
in pngtest.c
|
|
|
|
Version 1.4.0 [January 3, 2010]
|
|
No changes.
|
|
|
|
Version 1.4.1beta01 [January 8, 2010]
|
|
Updated CMakeLists.txt for consistent indentation and to avoid an
|
|
unclosed if-statement warning (Philip Lowman).
|
|
Revised Makefile.am and Makefile.in to remove references to Y2KINFO,
|
|
KNOWNBUG, and libpng.la (Robert Schwebel).
|
|
Revised the makefiles to install the same files and symbolic
|
|
links as configure, except for libpng.la and libpng14.la.
|
|
Make png_set|get_compression_buffer_size() available even when
|
|
PNG_WRITE_SUPPORTED is not enabled.
|
|
Revised Makefile.am and Makefile.in to simplify their maintenance.
|
|
Revised scripts/makefile.linux to install a link to libpng14.so.14.1
|
|
|
|
Version 1.4.1beta02 [January 9, 2010]
|
|
Revised the rest of the makefiles to install a link to libpng14.so.14.1
|
|
|
|
Version 1.4.1beta03 [January 10, 2010]
|
|
Removed png_set_premultiply_alpha() from scripts/*.def
|
|
|
|
Version 1.4.1rc01 [January 16, 2010]
|
|
No changes.
|
|
|
|
Version 1.4.1beta04 [January 23, 2010]
|
|
Revised png_decompress_chunk() to improve speed and memory usage when
|
|
decoding large chunks.
|
|
Added png_set|get_chunk_malloc_max() functions.
|
|
|
|
Version 1.4.1beta05 [January 26, 2010]
|
|
Relocated "int k" declaration in pngtest.c to minimize its scope.
|
|
|
|
Version 1.4.1beta06 [January 28, 2010]
|
|
Revised png_decompress_chunk() to use a two-pass method suggested by
|
|
John Bowler.
|
|
|
|
Version 1.4.1beta07 [February 6, 2010]
|
|
Folded some long lines in the source files.
|
|
Added defineable PNG_USER_CHUNK_CACHE_MAX, PNG_USER_CHUNK_MALLOC_MAX,
|
|
and a PNG_USER_LIMITS_SUPPORTED flag.
|
|
Eliminated use of png_ptr->irowbytes and reused the slot in png_ptr as
|
|
png_ptr->png_user_chunk_malloc_max.
|
|
Revised png_push_save_buffer() to do fewer but larger png_malloc() calls.
|
|
|
|
Version 1.4.1beta08 [February 6, 2010]
|
|
Minor cleanup and updating of dates and copyright year.
|
|
|
|
Version 1.5.0beta01 [February 7, 2010]
|
|
Moved declaration of png_struct into private pngstruct.h and png_info
|
|
into pnginfo.h
|
|
|
|
Version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010]
|
|
Reverted to original png_push_save_buffer() code.
|
|
|
|
Version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010]
|
|
Return allocated "old_buffer" in png_push_save_buffer() before
|
|
calling png_error(), to avoid a potential memory leak.
|
|
Updated configure script to use SO number 15.
|
|
|
|
Version 1.5.0beta04 [February 9, 2010]
|
|
Removed malformed "incomplete struct declaration" of png_info from png.h
|
|
|
|
Version 1.5.0beta05 [February 12, 2010]
|
|
Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
|
|
linewrapping that it entailed.
|
|
Revised comments in pngstruct.h and pnginfo.h and added pointers to
|
|
the libpng license.
|
|
Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
|
|
Removed the cbuilder5 project, which has not been updated to 1.4.0.
|
|
|
|
Version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010]
|
|
Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke
|
|
Nishikawa)
|
|
|
|
Version 1.5.0beta07 [omitted]
|
|
|
|
Version 1.5.0beta08 [February 19, 2010]
|
|
Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED
|
|
wherever png_snprintf() is used to construct error and warning messages.
|
|
Noted in scripts/makefile.mingw that it expects to be run under MSYS.
|
|
Removed obsolete unused MMX-querying support from contrib/gregbook
|
|
Added exported png_longjmp() function.
|
|
Removed the AIX redefinition of jmpbuf in png.h
|
|
Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt
|
|
when building on AIX.
|
|
|
|
Version 1.5.0beta09 [February 19, 2010]
|
|
Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt.
|
|
Changed the name of png_ptr->jmpbuf to png_ptr->png_jmpbuf in pngstruct.h
|
|
|
|
Version 1.5.0beta10 [February 25, 2010]
|
|
Removed unused gzio.c from contrib/pngminim gather and makefile scripts
|
|
Removed replacement error handlers from contrib/gregbook. Because of
|
|
the new png_longjmp() function they are no longer needed.
|
|
|
|
Version 1.5.0beta11 [March 6, 2010]
|
|
Removed checking for already-included setjmp.h from pngconf.h
|
|
Fixed inconsistent indentations and made numerous cosmetic changes.
|
|
Revised the "SEE ALSO" style of libpng.3, libpngpf.3, and png.5
|
|
|
|
Version 1.5.0beta12 [March 9, 2010]
|
|
Moved "#include png.h" inside pngpriv.h and removed "#include png.h" from
|
|
the source files, along with "#define PNG_EXPOSE_INTERNAL_STRUCTURES"
|
|
and "#define PNG_NO_PEDANTIC_WARNINGS" (John Bowler).
|
|
Created new pngdebug.h and moved debug definitions there.
|
|
|
|
Version 1.5.0beta13 [March 10, 2010]
|
|
Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice.
|
|
Revise the "#ifdef" blocks in png_inflate() so it will compile when neither
|
|
PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
|
|
is defined.
|
|
Removed unused png_measure_compressed_chunk() from pngpriv.h and libpngpf.3
|
|
Moved the 'config.h' support from pngconf.h to pngpriv.h
|
|
Removed PNGAPI from the png_longjmp_ptr typedef.
|
|
Eliminated dependence of pngtest.c on the private pngdebug.h file.
|
|
Make all png_debug macros into *unterminated* statements or
|
|
expressions (i.e. a trailing ';' must always be added) and correct
|
|
the format statements in various png_debug messages.
|
|
|
|
Version 1.5.0beta14 [March 14, 2010]
|
|
Removed direct access to png_ptr->io_ptr from the Windows code in pngtest.c
|
|
Revised Makefile.am to account for recent additions and replacements.
|
|
Corrected CE and OS/2 DEF files (scripts/png*def) for symbols removed and
|
|
added ordinal numbers to the Windows DEF file and corrected the duplicated
|
|
ordinal numbers on CE symbols that are commented out.
|
|
Added back in export symbols that can be present in the Windows build but
|
|
are disabled by default.
|
|
PNG_EXPORT changed to include an 'ordinal' field for DEF file generation.
|
|
PNG_CALLBACK added to make callback definitions uniform. PNGAPI split
|
|
into PNGCAPI (base C form), PNGAPI (exports) and PNGCBAPI (callbacks),
|
|
and appropriate changes made to all files. Cygwin builds re-hinged to
|
|
allow procedure call standard changes and to remove the need for the DEF
|
|
file (fixes build on Cygwin).
|
|
Enabled 'attribute' warnings that are relevant to library APIs and callbacks.
|
|
Changed rules for generation of the various symbol files and added a new
|
|
rule for a DEF file (which is also added to the distribution).
|
|
Updated the symbol file generation to stop it adding spurious spaces
|
|
to EOL (coming from preprocessor macro expansion). Added a facility
|
|
to join tokens in the output and rewrite *.dfn to use this.
|
|
Eliminated scripts/*.def in favor of libpng.def; updated projects/visualc71
|
|
and removed scripts/makefile.cygwin.
|
|
Made PNG_BUILD_DLL safe: it can be set whenever a DLL is being built.
|
|
Removed the include of sys/types.h - apparently unnecessary now on the
|
|
platforms on which it happened (all but Mac OS and RISC OS).
|
|
Moved the Mac OS test into pngpriv.h (the only place it is used.)
|
|
|
|
Version 1.5.0beta15 [March 17, 2010]
|
|
Added symbols.chk target to Makefile.am to validate the symbols in png.h
|
|
against the new DEF file scripts/symbols.def.
|
|
Changed the default DEF file back to pngwin.def.
|
|
Removed makefile.mingw.
|
|
Eliminated PNG_NO_EXTERN and PNG_ALL_EXTERN
|
|
|
|
Version 1.5.0beta16 [April 1, 2010]
|
|
Make png_text_struct independent of PNG_iTXt_SUPPORTED, so that
|
|
fields are initialized in all configurations. The READ/WRITE
|
|
macros (PNG_(READ|WRITE)_iTXt_SUPPORTED) still function as
|
|
before to disable code to actually read or write iTXt chunks
|
|
and iTXt_SUPPORTED can be used to detect presence of either
|
|
read or write support (but it is probably better to check for
|
|
the one actually required - read or write.)
|
|
Combined multiple png_warning() calls for a single error.
|
|
Restored the macro definition of png_check_sig().
|
|
|
|
Version 1.5.0beta17 [April 17, 2010]
|
|
Added some "(long)" typecasts to printf calls in png_handle_cHRM().
|
|
Documented the fact that png_set_dither() was disabled since libpng-1.4.0.
|
|
Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect
|
|
more accurately what it actually does. At the same time, renamed
|
|
the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to
|
|
PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
|
|
Added some "(long)" typecasts to printf calls in png_handle_cHRM().
|
|
Freeze build-time only configuration in the build.
|
|
In all prior versions of libpng most configuration options
|
|
controlled by compiler #defines had to be repeated by the
|
|
application code that used libpng. This patch changes this
|
|
so that compilation options that can only be changed at build
|
|
time are frozen in the build. Options that are compiler
|
|
dependent (and those that are system dependent) are evaluated
|
|
each time - pngconf.h holds these. Options that can be changed
|
|
per-file in the application are in png.h. Frozen options are
|
|
in the new installed header file pnglibconf.h (John Bowler)
|
|
Removed the xcode project because it has not been updated to work
|
|
with libpng-1.5.0.
|
|
Removed the ability to include optional pngusr.h
|
|
|
|
Version 1.5.0beta18 [April 17, 2010]
|
|
Restored the ability to include optional pngusr.h
|
|
Moved replacements for png_error() and png_warning() from the
|
|
contrib/pngminim project to pngerror.c, for use when warnings or
|
|
errors are disabled via PNG_NO_WARN or PNG_NO_ERROR_TEXT, to avoid
|
|
storing unneeded error/warning text.
|
|
Updated contrib/pngminim project to work with the new pnglibconf.h
|
|
Added some PNG_NO_* defines to contrib/pngminim/*/pngusr.h to save space.
|
|
|
|
Version 1.5.0beta19 [April 24, 2010]
|
|
Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the functions
|
|
to read and write ints to be disabled independently of PNG_USE_READ_MACROS,
|
|
which allows libpng to be built with the functions even though the default
|
|
is to use the macros - this allows applications to choose at app build
|
|
time whether or not to use macros (previously impossible because the
|
|
functions weren't in the default build.)
|
|
Changed Windows calling convention back to __cdecl for API functions.
|
|
For Windows/x86 platforms only:
|
|
__stdcall is no longer needed for Visual Basic, so libpng-1.5.0 uses
|
|
__cdecl throughout (both API functions and callbacks) on Windows/x86
|
|
platforms.
|
|
Replaced visualc6 and visualc71 projects with new vstudio project
|
|
Relaxed the overly-restrictive permissions of some files.
|
|
|
|
Version 1.5.0beta20 [April 24, 2010]
|
|
Relaxed more overly-restrictive permissions of some files.
|
|
|
|
Version 1.5.0beta21 [April 27, 2010]
|
|
Removed some unwanted binary bytes and changed CRLF to NEWLINE in the new
|
|
vstudio project files, and some trivial editing of some files in the
|
|
scripts directory.
|
|
Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in
|
|
contrib/pngminim/decoder/pngusr.h to make a smaller decoder application.
|
|
|
|
Version 1.5.0beta22 [April 28, 2010]
|
|
Fixed dependencies of GET_INT_32 - it does not require READ_INT_FUNCTIONS
|
|
because it has a macro equivalent.
|
|
Improved the options.awk script; added an "everything off" option.
|
|
Revised contrib/pngminim to use the "everything off" option in pngusr.dfa.
|
|
|
|
Version 1.5.0beta23 [April 29, 2010]
|
|
Corrected PNG_REMOVED macro to take five arguments.
|
|
The macro was documented with two arguments (name,ordinal), however
|
|
the symbol checking .dfn files assumed five arguments. The five
|
|
argument form seems more useful so it is changed to that.
|
|
Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED
|
|
in gregbook/readpng2.c
|
|
Corrected protection of png_get_user_transform_ptr. The API declaration in
|
|
png.h is removed if both READ and WRITE USER_TRANSFORM are turned off
|
|
but was left defined in pngtrans.c
|
|
Added logunsupported=1 to cause pnglibconf.h to document disabled options.
|
|
This makes the installed pnglibconf.h more readable but causes no
|
|
other change. The intention is that users of libpng will find it
|
|
easier to understand if an API they need is missing.
|
|
Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined.
|
|
Removed dummy_inflate.c from contrib/pngminim/encoder
|
|
Removed contrib/pngminim/*/gather.sh; gathering is now done in the makefile.
|
|
|
|
Version 1.5.0beta24 [May 7, 2010]
|
|
Use bitwise "&" instead of arithmetic mod in pngrutil.c calculation of the
|
|
offset of the png_ptr->rowbuf pointer into png_ptr->big_row_buf.
|
|
Added more blank lines for readability.
|
|
|
|
Version 1.5.0beta25 [June 18, 2010]
|
|
In pngpread.c: png_push_have_row() add check for new_row > height
|
|
Removed the now-redundant check for out-of-bounds new_row from example.c
|
|
|
|
Version 1.5.0beta26 [June 18, 2010]
|
|
In pngpread.c: png_push_process_row() add check for too many rows.
|
|
|
|
Version 1.5.0beta27 [June 18, 2010]
|
|
Removed the check added in beta25 as it is now redundant.
|
|
|
|
Version 1.5.0beta28 [June 20, 2010]
|
|
Rewrote png_process_IDAT_data to consistently treat extra data as warnings
|
|
and handle end conditions more cleanly.
|
|
Removed the new (beta26) check in png_push_process_row().
|
|
|
|
Version 1.5.0beta29 [June 21, 2010]
|
|
Revised scripts/options.awk to work on Sunos (but still doesn't work)
|
|
Added comment to options.awk and contrib/pngminim/*/makefile to try nawk.
|
|
|
|
Version 1.5.0beta30 [June 22, 2010]
|
|
Stop memory leak when reading a malformed sCAL chunk.
|
|
|
|
Version 1.5.0beta31 [June 26, 2010]
|
|
Revised pngpread.c patch of beta28 to avoid an endless loop.
|
|
Removed some trailing blanks.
|
|
|
|
Version 1.5.0beta32 [June 26, 2010]
|
|
Removed leftover scripts/options.patch and scripts/options.rej
|
|
|
|
Version 1.5.0beta33 [July 6, 3010]
|
|
Made FIXED and FLOATING options consistent in the APIs they enable and
|
|
disable. Corrected scripts/options.awk to handle both command line
|
|
options and options specified in the .dfa files.
|
|
Changed char *msg to PNG_CONST char *msg in pngrutil.c
|
|
Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or
|
|
floating point APIs, but not both.
|
|
Reversed patch to remove error handler when the jmp_buf is stored in the
|
|
main program structure, not the png_struct.
|
|
The error handler is needed because the default handler in libpng will
|
|
always use the jmp_buf in the library control structure; this is never
|
|
set. The gregbook code is a useful example because, even though it
|
|
uses setjmp/longjmp, it shows how error handling can be implemented
|
|
using control mechanisms not directly supported by libpng. The
|
|
technique will work correctly with mechanisms such as Microsoft
|
|
Structure Exceptions or C++ exceptions (compiler willing - note that gcc
|
|
does not by default support interworking of C and C++ error handling.)
|
|
Reverted changes to call png_longjmp in contrib/gregbook where it is not
|
|
appropriate. If mainprog->jmpbuf is used by setjmp, then png_longjmp
|
|
cannot be used.
|
|
Changed "extern PNG_EXPORT" to "PNG_EXPORT" in png.h (Jan Nijtmans)
|
|
Changed "extern" to "PNG_EXTERN" in pngpriv.h (except for the 'extern "C" {')
|
|
|
|
Version 1.5.0beta34 [July 12, 2010]
|
|
Put #ifndef PNG_EXTERN, #endif around the define PNG_EXTERN in pngpriv.h
|
|
|
|
Version 1.5.0beta35 [July 24, 2010]
|
|
Removed some newly-added TAB characters.
|
|
Added -DNO_PNG_SNPRINTF to CFLAGS in scripts/makefile.dj2
|
|
Moved the definition of png_snprintf() outside of the enclosing
|
|
#ifdef blocks in pngconf.h
|
|
|
|
Version 1.5.0beta36 [July 29, 2010]
|
|
Patches by John Bowler:
|
|
Fixed point APIs are now supported throughout (no missing APIs).
|
|
Internal fixed point arithmetic support exists for all internal floating
|
|
point operations.
|
|
sCAL validates the floating point strings it is passed.
|
|
Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2
|
|
Two new APIs exist to get the number of passes without turning on the
|
|
PNG_INTERLACE transform and to get the number of rows in the current
|
|
pass.
|
|
A new test program, pngvalid.c, validates the gamma code.
|
|
Errors in the 16-bit gamma correction (overflows) have been corrected.
|
|
cHRM chunk testing is done consistently (previously the floating point
|
|
API bypassed it, because the test really didn't work on FP, now the test
|
|
is performed on the actual values to be stored in the PNG file so it
|
|
works in the FP case too.)
|
|
Most floating point APIs now simply call the fixed point APIs after
|
|
converting the values to the fixed point form used in the PNG file.
|
|
The standard headers no longer include zlib.h, which is currently only
|
|
required for pngstruct.h and can therefore be internal.
|
|
Revised png_get_int_32 to undo the PNG two's complement representation of
|
|
negative numbers.
|
|
|
|
Version 1.5.0beta37 [July 30, 2010]
|
|
Added a typecast in png_get_int_32() in png.h and pngrutil.h to avoid
|
|
a compiler warning.
|
|
Replaced oFFs 0,0 with oFFs -10,20 in pngtest.png
|
|
|
|
Version 1.5.0beta38 [July 31, 2010]
|
|
Implemented remaining "_fixed" functions.
|
|
Corrected a number of recently introduced warnings mostly resulting from
|
|
safe but uncast assignments to shorter integers. Also added a zlib
|
|
VStudio release library project because the latest zlib Official Windows
|
|
build does not include such a thing.
|
|
Revised png_get_int_16() to be similar to png_get_int_32().
|
|
Restored projects/visualc71.
|
|
|
|
Version 1.5.0beta39 [August 2, 2010]
|
|
VisualC/GCC warning fixes, VisualC build fixes
|
|
The changes include support for function attributes in VC in addition to
|
|
those already present in GCC - necessary because without these some
|
|
warnings are unavoidable. Fixes include signed/unsigned fixes in
|
|
pngvalid and checks with gcc -Wall -Wextra -Wunused.
|
|
VC requires function attributes on function definitions as well as
|
|
declarations, PNG_FUNCTION has been added to enable this and the
|
|
relevant function definitions changed.
|
|
|
|
Version 1.5.0beta40 [August 6, 2010]
|
|
Correct use of _WINDOWS_ in pngconf.h
|
|
Removed png_mem_ #defines; they are no longer used.
|
|
Added the sRGB chunk to pngtest.png
|
|
|
|
Version 1.5.0beta41 [August 11, 2010]
|
|
Added the cHRM chunk to pngtest.png
|
|
Don't try to use version-script with cygwin/mingw.
|
|
Revised contrib/gregbook to work under cygwin/mingw.
|
|
|
|
Version 1.5.0beta42 [August 18, 2010]
|
|
Add .dll.a to the list of extensions to be symlinked by Makefile.am (Yaakov)
|
|
Made all API functions that have const arguments and constant string
|
|
literal pointers declare them (John Bowler).
|
|
|
|
Version 1.5.0beta43 [August 20, 2010]
|
|
Removed spurious tabs, shorten long lines (no source change)
|
|
Also added scripts/chkfmt to validate the format of all the files that can
|
|
reasonably be validated (it is suggested to run "make distclean" before
|
|
checking, because some machine generated files have long lines.)
|
|
Reformatted the CHANGES file to be more consistent throughout.
|
|
Made changes to address various issues identified by GCC, mostly
|
|
signed/unsigned and shortening problems on assignment but also a few
|
|
difficult to optimize (for GCC) loops.
|
|
Fixed non-GCC fixed point builds. In png.c a declaration was misplaced
|
|
in an earlier update. Fixed to declare the auto variables at the head.
|
|
Use cexcept.h in pngvalid.c.
|
|
|
|
Version 1.5.0beta44 [August 24, 2010]
|
|
Updated CMakeLists.txt to use CMAKE_INSTALL_LIBDIR variable; useful for
|
|
installing libpng in /usr/lib64 (Funda Wang).
|
|
Revised CMakeLists.txt to put the man pages in share/man/man* not man/man*
|
|
Revised CMakeLists.txt to make symlinks instead of copies when installing.
|
|
Changed PNG_LIB_NAME from pngNN to libpngNN in CMakeLists.txt (Philip Lowman)
|
|
Implemented memory checks within pngvalid
|
|
Reformatted/rearranged pngvalid.c to assist use of progressive reader.
|
|
Check interlaced images in pngvalid
|
|
Clarified pngusr.h comments in pnglibconf.dfa
|
|
Simplified the pngvalid error-handling code now that cexcept.h is in place.
|
|
Implemented progressive reader in pngvalid.c for standard tests
|
|
Implemented progressive read in pngvalid.c gamma tests
|
|
Turn on progressive reader in pngvalid.c by default and tidy code.
|
|
|
|
Version 1.5.0beta45 [August 26, 2010]
|
|
Added an explicit make step to projects/vstudio for pnglibconf.h
|
|
Also corrected zlib.vcxproj into which Visual Studio had introduced
|
|
what it calls an "authoring error". The change to make pnglibconf.h
|
|
simply copies the file; in the future it may actually generate the
|
|
file from scripts/pnglibconf.dfa as the other build systems do.
|
|
Changed pngvalid to work when floating point APIs are disabled
|
|
Renamed the prebuilt scripts/pnglibconf.h to scripts/pnglibconf.h.prebuilt
|
|
Supply default values for PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX
|
|
in pngpriv.h in case the user neglected to define them in their pngusr.h
|
|
|
|
Version 1.5.0beta46 [August 28, 2010]
|
|
Added new private header files to libpng_sources in CMakeLists.txt
|
|
Added PNG_READ_16BIT, PNG_WRITE_16BIT, and PNG_16BIT options.
|
|
Added reference to scripts/pnglibconf.h.prebuilt in the visualc71 project.
|
|
|
|
Version 1.5.0beta47 [September 11, 2010]
|
|
Fixed a number of problems with 64-bit compilation reported by Visual
|
|
Studio 2010 (John Bowler).
|
|
|
|
Version 1.5.0beta48 [October 4, 2010]
|
|
Updated CMakeLists.txt (Philip Lowman).
|
|
Revised autogen.sh to recognize and use $AUTOCONF, $AUTOMAKE, $AUTOHEADER,
|
|
$AUTOPOINT, $ACLOCAL and $LIBTOOLIZE
|
|
Fixed problem with symbols creation in Makefile.am which was assuming that
|
|
all versions of ccp write to standard output by default (Martin Banky). The
|
|
bug was introduced in libpng-1.2.9beta5.
|
|
Removed unused mkinstalldirs.
|
|
|
|
Version 1.5.0beta49 [October 8, 2010]
|
|
Undid Makefile.am revision of 1.5.0beta48.
|
|
|
|
Version 1.5.0beta50 [October 14, 2010]
|
|
Revised Makefile.in to account for mkinstalldirs being removed.
|
|
Added some "(unsigned long)" typecasts in printf statements in pngvalid.c.
|
|
Suppressed a compiler warning in png_handle_sPLT().
|
|
Check for out-of-range text compression mode in png_set_text().
|
|
|
|
Version 1.5.0beta51 [October 15, 2010]
|
|
Changed embedded dates to "(PENDING RELEASE) in beta releases (and future
|
|
rc releases) to minimize the difference between releases.
|
|
|
|
Version 1.5.0beta52 [October 16, 2010]
|
|
Restored some of the embedded dates (in png.h, png.c, documentation, etc.)
|
|
|
|
Version 1.5.0beta53 [October 18, 2010]
|
|
Updated INSTALL to mention using "make maintainer-clean" and to remove
|
|
obsolete statement about a custom ltmain.sh
|
|
Disabled "color-tests" by default in Makefile.am so it will work with
|
|
automake versions earlier than 1.11.1
|
|
Use document name "libpng-manual.txt" instead of "libpng-<version>.txt"
|
|
to simplify version differences.
|
|
Removed obsolete remarks about setjmp handling from INSTALL.
|
|
Revised and renamed the typedef in png.h and png.c that was designed
|
|
to catch library and header mismatch.
|
|
|
|
Version 1.5.0beta54 [November 10, 2010]
|
|
Require 48 bytes, not 64 bytes, for big_row_buf in overflow checks.
|
|
Used a consistent structure for the pngget.c functions.
|
|
|
|
Version 1.5.0beta55 [November 21, 2010]
|
|
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.
|
|
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'.
|
|
|
|
Version 1.5.0beta56 [December 7, 2010]
|
|
Added the private PNG_UNUSED() macro definition in pngpriv.h.
|
|
Added some commentary about PNG_EXPORT in png.h and pngconf.h
|
|
Revised PNG_EXPORT() macro and added PNG_EXPORTA() macro, with the
|
|
objective of simplifying and improving the cosmetic appearance of png.h.
|
|
Fixed some incorrect "=" macro names in pnglibconf.dfa
|
|
Included documentation of changes in 1.5.0 from 1.4.x in libpng-manual.txt
|
|
|
|
Version 1.5.0beta57 [December 9, 2010]
|
|
Documented the pngvalid gamma error summary with additional comments and
|
|
print statements.
|
|
Improved missing symbol handling in checksym.awk; symbols missing in both
|
|
the old and new files can now be optionally ignored, treated as errors
|
|
or warnings.
|
|
Removed references to pngvcrd.c and pnggccrd.c from the vstudio project.
|
|
Updated "libpng14" to "libpng15" in the visualc71 project.
|
|
Enabled the strip16 tests in pngvalid.`
|
|
Don't display test results (except PASS/FAIL) when running "make test".
|
|
Instead put them in pngtest-log.txt
|
|
Added "--with-zprefix=<string>" to configure.ac
|
|
Updated the prebuilt configuration files to autoconf version 2.68
|
|
|
|
Version 1.5.0beta58 [December 19, 2010]
|
|
Fixed interlace image handling and add test cases (John Bowler)
|
|
Fixed the clean rule in Makefile.am to remove pngtest-log.txt
|
|
Made minor changes to work around warnings in gcc 3.4
|
|
|
|
Version 1.5.0rc01 [December 27, 2010]
|
|
No changes.
|
|
|
|
Version 1.5.0rc02 [December 27, 2010]
|
|
Eliminated references to the scripts/*.def files in project/visualc71.
|
|
|
|
Version 1.5.0rc03 [December 28, 2010]
|
|
Eliminated scripts/*.def and revised Makefile.am accordingly
|
|
|
|
Version 1.5.0rc04 [December 29, 2010]
|
|
Fixed bug in background transformation handling in pngrtran.c (it was
|
|
looking for the flag in png_ptr->transformations instead of in
|
|
png_ptr->flags) (David Raymond).
|
|
|
|
Version 1.5.0rc05 [December 31, 2010]
|
|
Fixed typo in a comment in CMakeLists.txt (libpng14 => libpng15) (Cosmin)
|
|
|
|
Version 1.5.0rc06 [January 4, 2011]
|
|
Changed the new configure option "zprefix=string" to "zlib-prefix=string"
|
|
|
|
Version 1.5.0rc07 [January 4, 2011]
|
|
Updated copyright year.
|
|
|
|
Version 1.5.0 [January 6, 2011]
|
|
No changes.
|
|
|
|
version 1.5.1beta01 [January 8, 2011]
|
|
Added description of png_set_crc_action() to the manual.
|
|
Added a note in the manual that the type of the iCCP profile was changed
|
|
from png_charpp to png_bytepp in png_get_iCCP(). This change happened
|
|
in version 1.5.0beta36 but is not noted in the CHANGES. Similarly,
|
|
it was changed from png_charpp to png_const_bytepp in png_set_iCCP().
|
|
Ensure that png_rgb_to_gray ignores palette mapped images, if libpng
|
|
internally happens to call it with one, and fixed a failure to handle
|
|
palette mapped images correctly. This fixes CVE-2690.
|
|
|
|
Version 1.5.1beta02 [January 14, 2011]
|
|
Fixed a bug in handling of interlaced images (bero at arklinux.org).
|
|
Updated CMakeLists.txt (Clifford Yapp)
|
|
|
|
Version 1.5.1beta03 [January 14, 2011]
|
|
Fixed typecasting of some png_debug() statements (Cosmin)
|
|
|
|
Version 1.5.1beta04 [January 16, 2011]
|
|
Updated documentation of png_set|get_tRNS() (Thomas Klausner).
|
|
Mentioned in the documentation that applications must #include "zlib.h"
|
|
if they need access to anything in zlib.h, and that a number of
|
|
macros such as png_memset() are no longer accessible by applications.
|
|
Corrected pngvalid gamma test "sample" function to access all of the color
|
|
samples of each pixel, instead of sampling the red channel three times.
|
|
Prefixed variable names index, div, exp, gamma with "png_" to avoid "shadow"
|
|
warnings, and (mistakenly) changed png_exp() to exp().
|
|
|
|
Version 1.5.1beta05 [January 16, 2011]
|
|
Changed variable names png_index, png_div, png_exp, and png_gamma to
|
|
char_index, divisor, exp_b10, and gamma_val, respectively, and
|
|
changed exp() back to png_exp().
|
|
|
|
Version 1.5.1beta06 [January 20, 2011]
|
|
Prevent png_push_crc_skip() from hanging while reading an unknown chunk
|
|
or an over-large compressed zTXt chunk with the progressive reader.
|
|
Eliminated more GCC "shadow" warnings.
|
|
Revised png_fixed() in png.c to avoid compiler warning about reaching the
|
|
end without returning anything.
|
|
|
|
Version 1.5.1beta07 [January 22, 2011]
|
|
In the manual, describe the png_get_IHDR() arguments in the correct order.
|
|
Added const_png_structp and const_png_infop types, and used them in
|
|
prototypes for most png_get_*() functions.
|
|
|
|
Version 1.5.1beta08 [January 23, 2011]
|
|
Added png_get_io_chunk_type() and deprecated png_get_io_chunk_name()
|
|
Added synopses for the IO_STATE functions and other missing synopses
|
|
to the manual. Removed the synopses from libpngpf.3 because they
|
|
were out of date and no longer useful. Better information can be
|
|
obtained by reading the prototypes and comments in pngpriv.h
|
|
Attempted to fix cpp on Solaris with S. Studio 12 cc, fix build
|
|
Added a make macro DFNCPP that is a CPP that will accept the tokens in
|
|
a .dfn file and adds configure stuff to test for such a CPP. ./configure
|
|
should fail if one is not available.
|
|
Corrected const_png_ in png.h to png_const_ to avoid polluting the namespace.
|
|
Added png_get_current_row_number and png_get_current_pass_number for the
|
|
benefit of the user transform callback.
|
|
Added png_process_data_pause and png_process_data_skip for the benefit of
|
|
progressive readers that need to stop data processing or want to optimize
|
|
skipping of unread data (e.g., if the reader marks a chunk to be skipped.)
|
|
|
|
Version 1.5.1beta09 [January 24, 2011]
|
|
Enhanced pngvalid, corrected an error in gray_to_rgb, corrected doc error.
|
|
pngvalid contains tests of transforms, which tests are currently disabled
|
|
because they are incompletely tested. gray_to_rgb was failing to expand
|
|
the bit depth for smaller bit depth images; this seems to be a long
|
|
standing error and resulted, apparently, in invalid output
|
|
(CVE-2011-0408, CERT VU#643140). The documentation did not accurately
|
|
describe what libpng really does when converting RGB to gray.
|
|
|
|
Version 1.5.1beta10 [January 27, 2010]
|
|
Fixed incorrect examples of callback prototypes in the manual, that were
|
|
introduced in libpng-1.0.0.
|
|
In addition the order of the png_get_uint macros with respect to the
|
|
relevant function definitions has been reversed. This helps the
|
|
preprocessing of the symbol files be more robust. Furthermore, the
|
|
symbol file preprocessing now uses -DPNG_NO_USE_READ_MACROS even when
|
|
the library may actually be built with PNG_USE_READ_MACROS; this stops
|
|
the read macros interfering with the symbol file format.
|
|
Made the manual, synopses, and function prototypes use the function
|
|
argument names file_gamma, int_file_gamma, and srgb_intent consistently.
|
|
|
|
Version 1.5.1beta11 [January 28, 2011]
|
|
Changed PNG_UNUSED from "param=param;" to "{if(param){}}".
|
|
Corrected local variable type in new API png_process_data_skip()
|
|
The type was self-evidently incorrect but only causes problems on 64-bit
|
|
architectures.
|
|
Added transform tests to pngvalid and simplified the arguments.
|
|
|
|
Version 1.5.1rc01 [January 29, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.1rc02 [January 31, 2011]
|
|
Added a request in the manual that applications do not use "png_" or
|
|
"PNG_" to begin any of their own symbols.
|
|
Changed PNG_UNUSED to "(void)param;" and updated the commentary in pngpriv.h
|
|
|
|
Version 1.5.1 [February 3, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.2beta01 [February 13, 2011]
|
|
More -Wshadow fixes for older gcc compilers. Older gcc versions apparently
|
|
check formal parameters names in function declarations (as well as
|
|
definitions) to see if they match a name in the global namespace.
|
|
Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
|
|
old VisualC++ preprocessor.
|
|
Turned on interlace handling in png_read_png().
|
|
Fixed gcc pendantic warnings.
|
|
Handle longjmp in Cygwin.
|
|
Fixed png_get_current_row_number() in the interlaced case.
|
|
Cleaned up ALPHA flags and transformations.
|
|
Implemented expansion to 16 bits.
|
|
|
|
Version 1.5.2beta02 [February 19, 2011]
|
|
Fixed mistake in the descriptions of user read_transform and write_transform
|
|
function prototypes in the manual. The row_info struct is png_row_infop.
|
|
Reverted png_get_current_row_number() to previous (1.5.2beta01) behavior.
|
|
Corrected png_get_current_row_number documentation
|
|
Fixed the read/write row callback documentation.
|
|
This documents the current behavior, where the callback is called after
|
|
every row with information pertaining to the next row.
|
|
|
|
Version 1.5.2beta03 [March 3, 2011]
|
|
Fixed scripts/makefile.vcwin32
|
|
Updated contrib/pngsuite/README to add the word "modify".
|
|
Define PNG_ALLOCATED to blank when _MSC_VER<1300.
|
|
|
|
Version 1.5.2rc01 [March 19, 2011]
|
|
Define remaining attributes to blank when MSC_VER<1300.
|
|
ifdef out mask arrays in pngread.c when interlacing is not supported.
|
|
|
|
Version 1.5.2rc02 [March 22, 2011]
|
|
Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak
|
|
and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip"
|
|
from the makefiles.
|
|
Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
|
|
to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)
|
|
|
|
Version 1.5.2rc03 [March 24, 2011]
|
|
Don't include standard header files in png.h while building the symbol table,
|
|
to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).
|
|
|
|
Version 1.5.2 [March 31, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.3beta01 [April 1, 2011]
|
|
Re-initialize the zlib compressor before compressing non-IDAT chunks.
|
|
Added API functions (png_set_text_compression_level() and four others) to
|
|
set parameters for zlib compression of non-IDAT chunks.
|
|
|
|
Version 1.5.3beta02 [April 3, 2011]
|
|
Updated scripts/symbols.def with new API functions.
|
|
Only compile the new zlib re-initializing code when text or iCCP is
|
|
supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro.
|
|
Improved the optimization of the zlib CMF byte (see libpng-1.2.6beta03).
|
|
Optimize the zlib CMF byte in non-IDAT compressed chunks
|
|
|
|
Version 1.5.3beta03 [April 16, 2011]
|
|
Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have
|
|
snprintf, and the "__STRICT_ANSI__" detects that condition more reliably
|
|
than __STDC__ (John Bowler).
|
|
Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells
|
|
the compiler that a user supplied callback (the error handler) does not
|
|
return, yet there is no guarantee in practice that the application code
|
|
will correctly implement the error handler because the compiler only
|
|
issues a warning if there is a mistake (John Bowler).
|
|
Removed the no-longer-used PNG_DEPSTRUCT macro.
|
|
Updated the zlib version to 1.2.5 in the VStudio project.
|
|
Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in
|
|
pngwutil.c (John Bowler).
|
|
Fixed bug with stripping the filler or alpha channel when writing, that
|
|
was introduced in libpng-1.5.2beta01 (bug report by Andrew Church).
|
|
|
|
Version 1.5.3beta04 [April 27, 2011]
|
|
Updated pngtest.png with the new zlib CMF optimization.
|
|
Cleaned up conditional compilation code and of background/gamma handling
|
|
Internal changes only except a new option to avoid compiling the
|
|
png_build_grayscale_palette API (which is not used at all internally.)
|
|
The main change is to move the transform tests (READ_TRANSFORMS,
|
|
WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids
|
|
calls to spurious functions if all transforms are disabled and slightly
|
|
simplifies those functions. Pngvalid modified to handle this.
|
|
A minor change is to stop the strip_16 and expand_16 interfaces from
|
|
disabling each other; this allows the future alpha premultiplication
|
|
code to use 16-bit intermediate values while still producing 8-bit output.
|
|
png_do_background and png_do_gamma have been simplified to take a single
|
|
pointer to the png_struct rather than pointers to every item required
|
|
from the png_struct. This makes no practical difference to the internal
|
|
code.
|
|
A serious bug in the pngvalid internal routine 'standard_display_init' has
|
|
been fixed - this failed to initialize the red channel and accidentally
|
|
initialized the alpha channel twice.
|
|
Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
|
|
avoid a possible clash with the png_jmpbuf macro on some platforms.
|
|
|
|
Version 1.5.3beta05 [May 6, 2011]
|
|
Added the "_POSIX_SOURCE" feature test macro to ensure libpng sees the
|
|
correct API. _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and
|
|
pngvalid.c to ensure that POSIX conformant systems disable non-POSIX APIs.
|
|
Removed png_snprintf and added formatted warning messages. This change adds
|
|
internal APIs to allow png_warning messages to have parameters without
|
|
requiring the host OS to implement snprintf. As a side effect the
|
|
dependency of the tIME-supporting RFC1132 code on stdio is removed and
|
|
PNG_NO_WARNINGS does actually work now.
|
|
Pass "" instead of '\0' to png_default_error() in png_err(). This mistake
|
|
was introduced in libpng-1.2.20beta01. This fixes CVE-2011-2691.
|
|
Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte
|
|
optimization configureable.
|
|
IDAT compression failed if preceded by a compressed text chunk (bug
|
|
introduced in libpng-1.5.3beta01-02). 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 were 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.
|
|
|
|
Version 1.5.3beta06 [May 8, 2011]
|
|
Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt
|
|
Implemented premultiplied alpha support: png_set_alpha_mode API
|
|
|
|
Version 1.5.3beta07 [May 11, 2011]
|
|
Added expand_16 support to the high level interface.
|
|
Added named value and 'flag' gamma support to png_set_gamma. Made a minor
|
|
change from the previous (unreleased) ABI/API to hide the exact value used
|
|
for Macs - it's not a good idea to embed this in the ABI!
|
|
Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and PNG_AFTER_IDAT
|
|
from pngpriv.h to png.h because they must be visible to applications
|
|
that call png_set_unknown_chunks().
|
|
Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
|
|
before IDAT.
|
|
|
|
Version 1.5.3beta08 [May 16, 2011]
|
|
Improved "pngvalid --speed" to exclude more of pngvalid from the time.
|
|
Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt
|
|
The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
|
|
parameters are supplied by the caller), while in the absence of cHRM
|
|
sRGB/Rec 709 values are still used. This introduced a divide-by-zero
|
|
bug in png_handle_cHRM().
|
|
The bKGD chunk no longer overwrites the background value set by
|
|
png_set_background(), allowing the latter to be used before the file
|
|
header is read. It never performed any useful function to override
|
|
the default anyway.
|
|
Added memory overwrite and palette image checks to pngvalid.c
|
|
Previously palette image code was poorly checked. Since the transformation
|
|
code has a special palette path in most cases this was a severe weakness.
|
|
Minor cleanup and some extra checking in pngrutil.c and pngrtran.c. When
|
|
expanding an indexed image, always expand to RGBA if transparency is
|
|
present.
|
|
|
|
Version 1.5.3beta09 [May 17, 2011]
|
|
Reversed earlier 1.5.3 change of transformation order; move png_expand_16
|
|
back where it was. The change doesn't work because it requires 16-bit
|
|
gamma tables when the code only generates 8-bit ones. This fails
|
|
silently; the libpng code just doesn't do any gamma correction. Moving
|
|
the tests back leaves the old, inaccurate, 8-bit gamma calculations, but
|
|
these are clearly better than none!
|
|
|
|
Version 1.5.3beta10 [May 20, 2011]
|
|
|
|
png_set_background() and png_expand_16() did not work together correctly.
|
|
This problem is present in 1.5.2; if png_set_background is called with
|
|
need_expand false and the matching 16 bit color libpng erroneously just
|
|
treats it as an 8-bit color because of where png_do_expand_16 is in the
|
|
transform list. This simple fix reduces the supplied colour to 8-bits,
|
|
so it gets smashed, but this is better than the current behavior.
|
|
Added tests for expand16, more fixes for palette image tests to pngvalid.
|
|
Corrects the code for palette image tests and disables attempts to
|
|
validate palette colors.
|
|
|
|
Version 1.5.3rc01 [June 3, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.3rc02 [June 8, 2011]
|
|
Fixed uninitialized memory read in png_format_buffer() (Bug report by
|
|
Frank Busse, CVE-2011-2501, related to CVE-2004-0421).
|
|
|
|
Version 1.5.3beta11 [June 11, 2011]
|
|
Fixed png_handle_sCAL which is broken in 1.5. This fixes CVE 2011-2692.
|
|
Added sCAL to pngtest.png
|
|
Revised documentation about png_set_user_limits() to say that it also affects
|
|
png writing.
|
|
Revised handling of png_set_user_limits() so that it can increase the
|
|
limit beyond the PNG_USER_WIDTH|HEIGHT_MAX; previously it could only
|
|
reduce it.
|
|
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.
|
|
Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro.
|
|
Added projects/owatcom, an IDE project for OpenWatcom to replace
|
|
scripts/makefile.watcom. This project works with OpenWatcom 1.9. The
|
|
IDE autogenerates appropriate makefiles (libpng.mk) for batch processing.
|
|
The project is configurable, unlike the Visual Studio project, so long
|
|
as the developer has an awk.
|
|
Changed png_set_gAMA to limit the gamma value range so that the inverse
|
|
of the stored value cannot overflow the fixed point representation,
|
|
and changed other things OpenWatcom warns about.
|
|
Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. This allows
|
|
pngvalid to build when ALPHA_MODE is not supported, which is required if
|
|
it is to build on libpng 1.4.
|
|
Removed string/memory macros that are no longer used and are not
|
|
necessarily fully supportable, particularly png_strncpy and png_snprintf.
|
|
Added log option to pngvalid.c and attempted to improve gamma messages.
|
|
|
|
Version 1.5.3 [omitted]
|
|
People found the presence of a beta release following an rc release
|
|
to be confusing; therefore we bump the version to libpng-1.5.4beta01
|
|
and there will be no libpng-1.5.3 release.
|
|
|
|
Version 1.5.4beta01 [June 14, 2011]
|
|
Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
|
|
to get the same (inaccurate) output as libpng-1.5.2 and earlier.
|
|
Moved definitions of PNG_HAVE_IHDR, PNG_AFTER_IDAT, and PNG_HAVE_PLTE
|
|
outside of an unknown-chunk block in png.h because they are also
|
|
needed for other uses.
|
|
|
|
Version 1.5.4beta02 [June 14, 2011]
|
|
Fixed and clarified LEGACY 16-to-8 scaling code.
|
|
Added png_set_chop_16() API, to match inaccurate results from previous
|
|
libpng versions.
|
|
Removed the ACCURATE and LEGACY options (they are no longer useable)
|
|
Use the old scaling method for background if png_set_chop_16() was
|
|
called.
|
|
Made png_set_chop_16() API removeable by disabling PNG_CHOP_16_TO_8_SUPPORTED
|
|
|
|
Version 1.5.4beta03 [June 15, 2011]
|
|
Fixed a problem in png_do_expand_palette() exposed by optimization in
|
|
1.5.3beta06
|
|
Also removed a spurious and confusing "trans" member ("trans") from png_info.
|
|
The palette expand optimization prevented expansion to an intermediate RGBA
|
|
form if tRNS was present but alpha was marked to be stripped; this exposed
|
|
a check for tRNS in png_do_expand_palette() which is inconsistent with the
|
|
code elsewhere in libpng.
|
|
Correction to the expand_16 code; removed extra instance of
|
|
png_set_scale_16_to_8 from pngpriv.h
|
|
|
|
Version 1.5.4beta04 [June 16, 2011]
|
|
Added a missing "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c
|
|
Added PNG_TRANSFORM_CHOP_16 to the high-level read transforms.
|
|
Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. If this is
|
|
not enabled, png_set_strip_16() and png_do_scale_16_to_8() aren't built.
|
|
Revised contrib/visupng, gregbook, and pngminim to demonstrate chop_16_to_8
|
|
|
|
Version 1.5.4beta05 [June 16, 2011]
|
|
Renamed png_set_strip_16() to png_set_scale_16() and renamed
|
|
png_set_chop_16() to png_set_strip(16) in an attempt to minimize the
|
|
behavior changes between libpng14 and libpng15.
|
|
|
|
Version 1.5.4beta06 [June 18, 2011]
|
|
Fixed new bug that was causing both strip_16 and scale_16 to be applied.
|
|
|
|
Version 1.5.4beta07 [June 19, 2011]
|
|
Fixed pngvalid, simplified macros, added checking for 0 in sCAL.
|
|
The ACCURATE scale macro is no longer defined in 1.5 - call the
|
|
png_scale_16_to_8 API. Made sure that PNG_READ_16_TO_8 is still defined
|
|
if the png_strip_16_to_8 API is present. png_check_fp_number now
|
|
maintains some state so that positive, negative and zero values are
|
|
identified. sCAL uses these to be strictly spec conformant.
|
|
|
|
Version 1.5.4beta08 [June 23, 2011]
|
|
Fixed pngvalid if ACCURATE_SCALE is defined.
|
|
Updated scripts/pnglibconf.h.prebuilt.
|
|
|
|
Version 1.5.4rc01 [June 30, 2011]
|
|
Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400.
|
|
|
|
Version 1.5.4 [July 7, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.5beta01 [July 13, 2011]
|
|
Fixed some typos and made other minor changes in the manual.
|
|
Updated contrib/pngminus/makefile.std (Samuli Souminen)
|
|
|
|
Version 1.5.5beta02 [July 14, 2011]
|
|
Revised Makefile.am and Makefile.in to look in the right directory for
|
|
pnglibconf.h.prebuilt
|
|
|
|
Version 1.5.5beta03 [July 27, 2011]
|
|
Enabled compilation with g++ compiler. This compiler does not recognize
|
|
the file extension, so it always compiles with C++ rules. Made minor
|
|
changes to pngrutil.c to cast results where C++ expects it but C does not.
|
|
Minor editing of libpng.3 and libpng-manual.txt.
|
|
|
|
Version 1.5.5beta04 [July 29, 2011]
|
|
Revised CMakeLists.txt (Clifford Yapp)
|
|
Updated commentary about the png_rgb_to_gray() default coefficients
|
|
in the manual and in pngrtran.c
|
|
|
|
Version 1.5.5beta05 [August 17, 2011]
|
|
Prevent unexpected API exports from non-libpng DLLs on Windows. The "_DLL"
|
|
is removed from the test of whether a DLL is being built (this erroneously
|
|
caused the libpng APIs to be marked as DLL exports in static builds under
|
|
Microsoft Visual Studio). Almost all of the libpng building configuration
|
|
is moved from pngconf.h to pngpriv.h, but PNG_DLL_EXPORT remains in
|
|
pngconf.h, though, so that it is colocated with the import definition (it
|
|
is no longer used anywhere in the installed headers). The VStudio project
|
|
definitions have been cleaned up: "_USRDLL" has been removed from the
|
|
static library builds (this was incorrect), and PNG_USE_DLL has been added
|
|
to pngvalid to test the functionality (pngtest does not supply it,
|
|
deliberately). The spurious "_EXPORTS" has been removed from the
|
|
libpng build (all these errors were a result of copy/paste between project
|
|
configurations.)
|
|
Added new types and internal functions for CIE RGB end point handling to
|
|
pngpriv.h (functions yet to be implemented).
|
|
|
|
Version 1.5.5beta06 [August 26, 2011]
|
|
Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set in CMakeLists.txt
|
|
(Clifford Yap)
|
|
Fixes to rgb_to_gray and cHRM XYZ APIs (John Bowler):
|
|
The rgb_to_gray code had errors when combined with gamma correction.
|
|
Some pixels were treated as true grey when they weren't and such pixels
|
|
and true grey ones were not gamma corrected (the original value of the
|
|
red component was used instead). APIs to get and set cHRM using color
|
|
space end points have been added and the rgb_to_gray code that defaults
|
|
based on cHRM, and the divide-by-zero bug in png_handle_cHRM (CERT
|
|
VU#477046, CVE-2011-3328, introduced in 1.5.4) have been corrected.
|
|
A considerable number of tests has been added to pngvalid for the
|
|
rgb_to_gray transform.
|
|
Arithmetic errors in rgb_to_gray whereby the calculated gray value was
|
|
truncated to the bit depth rather than rounded have been fixed except in
|
|
the 8-bit non-gamma-corrected case (where consistency seems more important
|
|
than correctness.) The code still has considerable inaccuracies in the
|
|
8-bit case because 8-bit linear arithmetic is used.
|
|
|
|
Version 1.5.5beta07 [September 7, 2011]
|
|
Added "$(ARCH)" option to makefile.darwin
|
|
Added SunOS support to configure.ac and Makefile.am
|
|
Changed png_chunk_benign_error() to png_warning() in png.c, in
|
|
png_XYZ_from_xy_checked().
|
|
|
|
Version 1.5.5beta08 [September 10, 2011]
|
|
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.
|
|
Relocated new HAVE_SOLARIS_LD definition in configure.ac
|
|
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.
|
|
|
|
Version 1.5.5rc01 [September 15, 2011]
|
|
Removed "L" suffixes in pngpriv.h
|
|
|
|
Version 1.5.5 [September 22, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.6beta01 [September 22, 2011]
|
|
Fixed some 64-bit type conversion warnings in pngrtran.c
|
|
Moved row_info from png_struct to a local variable.
|
|
The various interlace mask arrays have been made into arrays of
|
|
bytes and made PNG_CONST and static (previously some arrays were
|
|
marked PNG_CONST and some weren't).
|
|
Additional checks have been added to the transform code to validate the
|
|
pixel depths after the transforms on both read and write.
|
|
Removed some redundant code from pngwrite.c, in png_destroy_write_struct().
|
|
Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4].
|
|
This removes the need to allocate temporary strings for chunk names on
|
|
the stack in the read/write code. Unknown chunk handling still uses the
|
|
string form because this is exposed in the API.
|
|
|
|
Version 1.5.6beta02 [September 26, 2011]
|
|
Added a note in the manual the png_read_update_info() must be called only
|
|
once with a particular info_ptr.
|
|
Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro.
|
|
|
|
Version 1.5.6beta03 [September 28, 2011]
|
|
Revised test-pngtest.sh to report FAIL when pngtest fails.
|
|
Added "--strict" option to pngtest, to report FAIL when the failure is
|
|
only because the resulting valid files are different.
|
|
Revised CMakeLists.txt to work with mingw and removed some material from
|
|
CMakeLists.txt that is no longer useful in libpng-1.5.
|
|
|
|
Version 1.5.6beta04 [October 5, 2011]
|
|
Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")."
|
|
|
|
Version 1.5.6beta05 [October 12, 2011]
|
|
Speed up png_combine_row() for interlaced images. This reduces the generality
|
|
of the code, allowing it to be optimized for Adam7 interlace. The masks
|
|
passed to png_combine_row() are now generated internally, avoiding
|
|
some code duplication and localizing the interlace handling somewhat.
|
|
Align png_struct::row_buf - previously it was always unaligned, caused by
|
|
a bug in the code that attempted to align it; the code needs to subtract
|
|
one from the pointer to take account of the filter byte prepended to
|
|
each row.
|
|
Optimized png_combine_row() when rows are aligned. This gains a small
|
|
percentage for 16-bit and 32-bit pixels in the typical case where the
|
|
output row buffers are appropriately aligned. The optimization was not
|
|
previously possible because the png_struct buffer was always misaligned.
|
|
Fixed bug in png_write_chunk_header() debug print, introduced in 1.5.6beta01.
|
|
|
|
Version 1.5.6beta06 [October 17, 2011]
|
|
Removed two redundant tests for unitialized row.
|
|
Fixed a relatively harmless memory overwrite in compressed text writing
|
|
with a 1 byte zlib buffer.
|
|
Add ability to call png_read_update_info multiple times to pngvalid.c.
|
|
Fixes for multiple calls to png_read_update_info. These fixes attend to
|
|
most of the errors revealed in pngvalid, however doing the gamma work
|
|
twice results in inaccuracies that can't be easily fixed. There is now
|
|
a warning in the code if this is going to happen.
|
|
Turned on multiple png_read_update_info in pngvalid transform tests.
|
|
Prevent libpng from overwriting unused bits at the end of the image when
|
|
it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would
|
|
overwrite the partial byte at the end of each row if the row width was not
|
|
an exact multiple of 8 bits and the image is not interlaced.
|
|
|
|
Version 1.5.6beta07 [October 21, 2011]
|
|
Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row
|
|
(Mans Rullgard).
|
|
|
|
Version 1.5.6rc01 [October 26, 2011]
|
|
Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM"
|
|
|
|
Version 1.5.6rc02 [October 27, 2011]
|
|
Added LSR() macro to defend against buggy compilers that evaluate non-taken
|
|
code branches and complain about out-of-range shifts.
|
|
|
|
Version 1.5.6rc03 [October 28, 2011]
|
|
Renamed the LSR() macro to PNG_LSR() and added PNG_LSL() macro.
|
|
Fixed compiler warnings with Intel and MSYS compilers. The logical shift
|
|
fix for Microsoft Visual C is required by other compilers, so this
|
|
enables that fix for all compilers when using compile-time constants.
|
|
Under MSYS 'byte' is a name declared in a system header file, so we
|
|
changed the name of a local variable to avoid the warnings that result.
|
|
Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h
|
|
|
|
Version 1.5.6 [November 3, 2011]
|
|
No changes.
|
|
|
|
Version 1.5.7beta01 [November 4, 2011]
|
|
Added support for ARM processor, when decoding all PNG up-filtered rows
|
|
and any other-filtered rows with 3 or 4 bytes per pixel (Mans Rullgard).
|
|
Fixed bug in pngvalid on early allocation failure; fixed type cast in
|
|
pngmem.c; pngvalid would attempt to call png_error() if the allocation
|
|
of a png_struct or png_info failed. This would probably have led to a
|
|
crash. The pngmem.c implementation of png_malloc() included a cast
|
|
to png_size_t which would fail on large allocations on 16-bit systems.
|
|
Fix for the preprocessor of the Intel C compiler. The preprocessor
|
|
splits adjacent @ signs with a space; this changes the concatentation
|
|
token from @-@-@ to PNG_JOIN; that should work with all compiler
|
|
preprocessors.
|
|
Paeth filter speed improvements from work by Siarhei Siamashka. This
|
|
changes the 'Paeth' reconstruction function to improve the GCC code
|
|
generation on x86. The changes are only part of the suggested ones;
|
|
just the changes that definitely improve speed and remain simple.
|
|
The changes also slightly increase the clarity of the code.
|
|
|
|
Version 1.5.7beta02 [November 11, 2011]
|
|
Check compression_type parameter in png_get_iCCP and remove spurious
|
|
casts. The compression_type parameter is always assigned to, so must
|
|
be non-NULL. The cast of the profile length potentially truncated the
|
|
value unnecessarily on a 16-bit int system, so the cast of the (byte)
|
|
compression type to (int) is specified by ANSI-C anyway.
|
|
Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left
|
|
the sBIT fields in the test pixel as 0, which resulted in a floating
|
|
point division by zero which was irrelevant but causes systems where
|
|
FP exceptions cause a crash. Added code to pngvalid to turn on FP
|
|
exceptions if the appropriate glibc support is there to ensure this is
|
|
tested in the future.
|
|
Updated scripts/pnglibconf.mak and scripts/makefile.std to handle the
|
|
new PNG_JOIN macro.
|
|
Added versioning to pnglibconf.h comments.
|
|
Simplified read/write API initial version; basic read/write tested on
|
|
a variety of images, limited documentation (in the header file.)
|
|
Installed more accurate linear to sRGB conversion tables. The slightly
|
|
modified tables reduce the number of 16-bit values that
|
|
convert to an off-by-one 8-bit value. The "makesRGB.c" code that was used
|
|
to generate the tables is now in a contrib/sRGBtables sub-directory.
|
|
|
|
Version 1.5.7beta03 [November 17, 2011]
|
|
Removed PNG_CONST from the sRGB table declarations in pngpriv.h and png.c
|
|
Added run-time detection of NEON support.
|
|
Added contrib/libtests; includes simplified API test and timing test and
|
|
a color conversion utility for rapid checking of failed 'pngstest' results.
|
|
Multiple transform bug fixes plus a work-round for double gamma correction.
|
|
libpng does not support more than one transform that requires linear data
|
|
at once - if this is tried typically the results is double gamma
|
|
correction. Since the simplified APIs can need rgb to gray combined with
|
|
a compose operation it is necessary to do one of these outside the main
|
|
libpng transform code. This check-in also contains fixes to various bugs
|
|
in the simplified APIs themselves and to some bugs in compose and rgb to
|
|
gray (on palette) itself.
|
|
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.
|
|
Added --noexecstack to assembler file compilation. GCC does not set
|
|
this on assembler compilation, even though it does on C compilation.
|
|
This creates security issues if assembler code is enabled; the
|
|
work-around is to set it by default in the flags for $(CCAS)
|
|
Work around compilers that don't support declaration of const data. Some
|
|
compilers fault 'extern const' data declarations (because the data is
|
|
not initialized); this turns on const-ness only for compilers where
|
|
this is known to work.
|
|
|
|
Version 1.5.7beta04 [November 17, 2011]
|
|
Since the gcc driver does not recognize the --noexecstack flag, we must
|
|
use the -Wa prefix to have it passed through to the assembler.
|
|
Also removed a duplicate setting of this flag.
|
|
Added files that were omitted from the libpng-1.5.7beta03 zip distribution.
|
|
|
|
Version 1.5.7beta05 [November 25, 2011]
|
|
Removed "zTXt" from warning in generic chunk decompression function.
|
|
Validate time settings passed to pngset() and png_convert_to_rfc1123()
|
|
(Frank Busse). Note: This prevented CVE-2015-7981 from affecting
|
|
libpng-1.5.7 and later.
|
|
Added MINGW support to CMakeLists.txt
|
|
Reject invalid compression flag or method when reading the iTXt chunk.
|
|
Backed out 'simplified' API changes. The API seems too complex and there
|
|
is a lack of consensus or enthusiasm for the proposals. The API also
|
|
reveals significant bugs inside libpng (double gamma correction and the
|
|
known bug of being unable to retrieve a corrected palette). It seems
|
|
better to wait until the bugs, at least, are corrected.
|
|
Moved pngvalid.c into contrib/libtests
|
|
Rebuilt Makefile.in, configure, etc., with autoconf-2.68
|
|
|
|
Version 1.5.7rc01 [December 1, 2011]
|
|
Replaced an "#if" with "#ifdef" in pngrtran.c
|
|
Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
|
|
|
|
Version 1.5.7rc02 [December 5, 2011]
|
|
Revised project files and contrib/pngvalid/pngvalid.c to account for
|
|
the relocation of pngvalid into contrib/libtests.
|
|
Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
|
|
as in libpng-1.5.4.
|
|
Put CRLF line endings in the owatcom project files.
|
|
|
|
Version 1.5.7rc03 [December 7, 2011]
|
|
Updated CMakeLists.txt to account for the relocation of pngvalid.c
|
|
|
|
Version 1.5.7 [December 15, 2011]
|
|
Minor fixes to pngvalid.c for gcc 4.6.2 compatibility to remove warnings
|
|
reported by earlier versions.
|
|
Fixed minor memset/sizeof errors in pngvalid.c.
|
|
|
|
Version 1.6.0beta01 [December 15, 2011]
|
|
Removed machine-generated configure files from the GIT repository (they will
|
|
continue to appear in the tarball distributions).
|
|
Restored the new 'simplified' API, which was started in libpng-1.5.7beta02
|
|
but later deleted from libpng-1.5.7beta05.
|
|
Added example programs for the new 'simplified' API.
|
|
Added ANSI-C (C90) headers and require them, and take advantage of the
|
|
change. Also fixed some of the projects/* and contrib/* files that needed
|
|
updates for libpng16 and the move of pngvalid.c.
|
|
With this change the required ANSI-C header files are assumed to exist: the
|
|
implementation must provide float.h, limits.h, stdarg.h and stddef.h and
|
|
libpng relies on limits.h and stddef.h existing and behaving as defined
|
|
(the other two required headers aren't used). Non-ANSI systems that don't
|
|
have stddef.h or limits.h will have to provide an appropriate fake
|
|
containing the relevant types and #defines.
|
|
Dropped support for 16-bit platforms. The use of FAR/far has been eliminated
|
|
and the definition of png_alloc_size_t is now controlled by a flag so
|
|
that 'small size_t' systems can select it if necessary. Libpng 1.6 may
|
|
not currently work on such systems -- it seems likely that it will
|
|
ask 'malloc' for more than 65535 bytes with any image that has a
|
|
sufficiently large row size (rather than simply failing to read such
|
|
images).
|
|
New tools directory containing tools used to generate libpng code.
|
|
Fixed race conditions in parallel make builds. With higher degrees of
|
|
parallelism during 'make' the use of the same temporary file names such
|
|
as 'dfn*' can result in a race where a temporary file from one arm of the
|
|
build is deleted or overwritten in another arm. This changes the
|
|
temporary files for suffix rules to always use $* and ensures that the
|
|
non-suffix rules use unique file names.
|
|
|
|
Version 1.6.0beta02 [December 21, 2011]
|
|
Correct configure builds where build and source directories are separate.
|
|
The include path of 'config.h' was erroneously made relative in pngvalid.c
|
|
in libpng 1.5.7.
|
|
|
|
Version 1.6.0beta03 [December 22, 2011]
|
|
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.
|
|
Added png_convert_to_rfc1123_buffer() and deprecated png_convert_to_rfc1123()
|
|
to avoid including a spurious buffer in the png_struct.
|
|
|
|
Version 1.6.0beta04 [December 30, 2011]
|
|
Regenerated configure scripts with automake-1.11.2
|
|
Eliminated png_info_destroy(). It is now used only in png.c and only calls
|
|
one other internal function and memset().
|
|
Enabled png_get_sCAL_fixed() if floating point APIs are enabled. Previously
|
|
it was disabled whenever internal fixed point arithmetic was selected,
|
|
which meant it didn't exist even on systems where FP was available but not
|
|
preferred.
|
|
Added pngvalid.c compile time checks for const APIs.
|
|
Implemented 'restrict' for png_info and png_struct. 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.
|
|
Moved AC_MSG_CHECKING([if libraries can be versioned]) later to the proper
|
|
location in configure.ac (Gilles Espinasse).
|
|
Changed png_memcpy to C assignment where appropriate. Changed all those
|
|
uses of png_memcpy that were doing a simple assignment to assignments
|
|
(all those cases where the thing being copied is a non-array C L-value).
|
|
Added some error checking to png_set_*() routines.
|
|
Removed the reference to the non-exported function png_memcpy() from
|
|
example.c.
|
|
Fixed the Visual C 64-bit build - it requires jmp_buf to be aligned, but
|
|
it had become misaligned.
|
|
Revised contrib/pngminus/pnm2png.c to avoid warnings when png_uint_32
|
|
and unsigned long are of different sizes.
|
|
|
|
Version 1.6.0beta05 [January 15, 2012]
|
|
Updated manual with description of the simplified API (copied from png.h)
|
|
Fix bug in pngerror.c: some long warnings were being improperly truncated
|
|
(CVE-2011-3464, bug introduced in libpng-1.5.3beta05).
|
|
|
|
Version 1.6.0beta06 [January 24, 2012]
|
|
Added palette support to the simplified APIs. This commit
|
|
changes some of the macro definitions in png.h, app code
|
|
may need corresponding changes.
|
|
Increased the formatted warning buffer to 192 bytes.
|
|
Added color-map support to simplified API. This is an initial version for
|
|
review; the documentation has not yet been updated.
|
|
Fixed Min/GW uninstall to remove libpng.dll.a
|
|
|
|
Version 1.6.0beta07 [January 28, 2012]
|
|
Eliminated Intel icc/icl compiler warnings. The Intel (GCC derived)
|
|
compiler issues slightly different warnings from those issued by the
|
|
current vesions of GCC. This eliminates those warnings by
|
|
adding/removing casts and small code rewrites.
|
|
Updated configure.ac from autoupdate: added --enable-werror option.
|
|
Also some layout regularization and removal of introduced tab characters
|
|
(replaced with 3-character indentation). Obsolete macros identified by
|
|
autoupdate have been removed; the replacements are all in 2.59 so
|
|
the pre-req hasn't been changed. --enable-werror checks for support
|
|
for -Werror (or the given argument) in the compiler. This mimics the
|
|
gcc configure option by allowing -Werror to be turned on safely; without
|
|
the option the tests written in configure itself fail compilation because
|
|
they cause compiler warnings.
|
|
Rewrote autogen.sh to run autoreconf instead of running tools one-by-one.
|
|
Conditionalize the install rules for MINGW and CYGWIN in CMakeLists.txt and
|
|
set CMAKE_LIBRARY_OUTPUT_DIRECTORY to "lib" on all platforms (C. Yapp).
|
|
Freeze libtool files in the 'scripts' directory. This version of autogen.sh
|
|
attempts to dissuade people from running it when it is not, or should not,
|
|
be necessary. In fact, autogen.sh does not work when run in a libpng
|
|
directory extracted from a tar distribution anymore. You must run it in
|
|
a GIT clone instead.
|
|
Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale),
|
|
and renamed three whose names were inconsistent with those in
|
|
pngsuite/README.txt.
|
|
|
|
Version 1.6.0beta08 [February 1, 2012]
|
|
Fixed Image::colormap misalignment in pngstest.c
|
|
Check libtool/libtoolize version number (2.4.2) in configure.ac
|
|
Divide test-pngstest.sh into separate pngstest runs for basic and
|
|
transparent images.
|
|
Moved automake options to AM_INIT_AUTOMAKE in configure.ac
|
|
Added color-tests, silent-rules (Not yet implemented in Makefile.am) and
|
|
version checking to configure.ac
|
|
Improved pngstest speed by not doing redundant tests and add const to
|
|
the background parameter of png_image_finish_read. The --background
|
|
option is now done automagically only when required, so that commandline
|
|
option no longer exists.
|
|
Cleaned up pngpriv.h to consistently declare all functions and data.
|
|
Also eliminated PNG_CONST_DATA, which is apparently not needed but we
|
|
can't be sure until it is gone.
|
|
Added symbol prefixing that allows all the libpng external symbols
|
|
to be prefixed (suggested by Reuben Hawkins).
|
|
Updated "ftbb*.png" list in the owatcom and vstudio projects.
|
|
Fixed 'prefix' builds on clean systems. The generation of pngprefix.h
|
|
should not require itself.
|
|
Updated INSTALL to explain that autogen.sh must be run in a GIT clone,
|
|
not in a libpng directory extracted from a tar distribution.
|
|
|
|
Version 1.6.0beta09 [February 1, 2012]
|
|
Reverted the prebuilt configure files to libpng-1.6.0beta05 condition.
|
|
|
|
Version 1.6.0beta10 [February 3, 2012]
|
|
Added Z_SOLO for zlib-1.2.6+ and correct pngstest tests
|
|
Updated list of test images in CMakeLists.txt
|
|
Updated the prebuilt configure files to current condition.
|
|
Revised INSTALL information about autogen.sh; it works in tar distributions.
|
|
|
|
Version 1.6.0beta11 [February 16, 2012]
|
|
Fix character count in pngstest command in projects/owatcom/pngstest.tgt
|
|
Revised test-pngstest.sh to report PASS/FAIL for each image.
|
|
Updated documentation about the simplified API.
|
|
Corrected estimate of error in libpng png_set_rgb_to_gray API. The API is
|
|
extremely inaccurate for sRGB conversions because it uses an 8-bit
|
|
intermediate linear value and it does not use the sRGB transform, so it
|
|
suffers from the known instability in gamma transforms for values close
|
|
to 0 (see Poynton). The net result is that the calculation has a maximum
|
|
error of 14.99/255; 0.5/255^(1/2.2). pngstest now uses 15 for the
|
|
permitted 8-bit error. This may still not be enough because of arithmetic
|
|
error.
|
|
Removed some unused arrays (with #ifdef) from png_read_push_finish_row().
|
|
Fixed a memory overwrite bug in simplified read of RGB PNG with
|
|
non-linear gamma Also bugs in the error checking in pngread.c and changed
|
|
quite a lot of the checks in pngstest.c to be correct; either correctly
|
|
written or not over-optimistic. The pngstest changes are insufficient to
|
|
allow all possible RGB transforms to be passed; pngstest cmppixel needs
|
|
to be rewritten to make it clearer which errors it allows and then changed
|
|
to permit known inaccuracies.
|
|
Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h
|
|
Fixed fixed/float API export conditionals. 1) If FIXED_POINT or
|
|
FLOATING_POINT options were switched off, png.h ended up with lone ';'
|
|
characters. This is not valid ANSI-C outside a function. The ';'
|
|
characters have been moved inside the definition of PNG_FP_EXPORT and
|
|
PNG_FIXED_EXPORT. 2) If either option was switched off, the declaration
|
|
of the corresponding functions were completely omitted, even though some
|
|
of them are still used internally. The result is still valid, but
|
|
produces warnings from gcc with some warning options (including -Wall). The
|
|
fix is to cause png.h to declare the functions with PNG_INTERNAL_FUNCTION
|
|
when png.h is included from pngpriv.h.
|
|
Check for invalid palette index while reading paletted PNG. When one is
|
|
found, issue a warning and increase png_ptr->num_palette accordingly.
|
|
Apps are responsible for checking to see if that happened.
|
|
|
|
Version 1.6.0beta12 [February 18, 2012]
|
|
Do not increase num_palette on invalid_index.
|
|
Relocated check for invalid palette index to pngrtran.c, after unpacking
|
|
the sub-8-bit pixels.
|
|
Fixed CVE-2011-3026 buffer overrun bug. This bug was introduced when
|
|
iCCP chunk support was added at libpng-1.0.6. Deal more correctly with the
|
|
test on iCCP chunk length. Also removed spurious casts that may hide
|
|
problems on 16-bit systems.
|
|
|
|
Version 1.6.0beta13 [February 24, 2012]
|
|
Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from
|
|
pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c;
|
|
now that png_ptr->buffer is inaccessible to applications, the special
|
|
handling is no longer useful.
|
|
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_SUPPORTED=1" on the
|
|
configure command or put #define PNG_SAFE_LIMITS_SUPPORTED in
|
|
pnglibconf.h.prebuilt and pnglibconf.h.
|
|
|
|
Version 1.6.0beta14 [February 27, 2012]
|
|
Added information about the new limits in the manual.
|
|
Updated Makefile.in
|
|
|
|
Version 1.6.0beta15 [March 2, 2012]
|
|
Removed unused "current_text" members of png_struct and the png_free()
|
|
of png_ptr->current_text from pngread.c
|
|
Rewrote pngstest.c for substantial speed improvement.
|
|
Fixed transparent pixel and 16-bit rgb tests in pngstest and removed a
|
|
spurious check in pngwrite.c
|
|
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.
|
|
Improved pngstest fine tuning of error numbers, new test file generator.
|
|
The generator generates images that test the full range of sample values,
|
|
allow the error numbers in pngstest to be tuned and checked. makepng
|
|
also allows generation of images with extra chunks, although this is
|
|
still work-in-progress.
|
|
Added check for invalid palette index while reading.
|
|
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.
|
|
Removed whitespace from the end of lines in all source files and scripts.
|
|
|
|
Version 1.6.0beta16 [March 6, 2012]
|
|
Relocated palette-index checking function from pngrutil.c to pngtrans.c
|
|
Added palette-index checking while writing.
|
|
Changed png_inflate() and calling routines to avoid overflow problems.
|
|
This is an intermediate check-in that solves the immediate problems and
|
|
introduces one performance improvement (avoiding a copy via png_ptr->zbuf.)
|
|
Further changes will be made to make ICC profile handling more secure.
|
|
Fixed build warnings (MSVC, GCC, GCC v3). Cygwin GCC with default options
|
|
declares 'index' as a global, causing a warning if it is used as a local
|
|
variable. GCC 64-bit warns about assigning a (size_t) (unsigned 64-bit)
|
|
to an (int) (signed 32-bit). MSVC, however, warns about using the
|
|
unary '-' operator on an unsigned value (even though it is well defined
|
|
by ANSI-C to be ~x+1). The padding calculation was changed to use a
|
|
different method. Removed the tests on png_ptr->pass.
|
|
Added contrib/libtests/tarith.c to test internal arithmetic functions from
|
|
png.c. This is a libpng maintainer program used to validate changes to the
|
|
internal arithmetic functions.
|
|
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.
|
|
Validate the zTXt strings in pngvalid.
|
|
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).
|
|
|
|
Version 1.6.0beta17 [March 10, 2012]
|
|
Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition.
|
|
Reject all iCCP chunks after the first, even if the first one is invalid.
|
|
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. A warning is no longer
|
|
issued if the language tag or translated keyword in the iTXt chunk
|
|
has zero length.
|
|
If benign errors are disabled use maximum window on ancilliary inflate.
|
|
This works round a bug introduced in 1.5.4 where compressed ancillary
|
|
chunks could end up with a too-small windowBits value in the deflate
|
|
header.
|
|
|
|
Version 1.6.0beta18 [March 16, 2012]
|
|
Issue a png_benign_error() instead of png_warning() about bad palette index.
|
|
In pngtest, treat benign errors as errors if "-strict" is present.
|
|
Fixed an off-by-one error in the palette index checking function.
|
|
Fixed a compiler warning under Cygwin (Windows-7, 32-bit system)
|
|
Revised example.c to put text strings in a temporary character array
|
|
instead of directly assigning string constants to png_textp members.
|
|
This avoids compiler warnings when -Wwrite-strings is enabled.
|
|
Added output flushing to aid debugging under Visual Studio. Unfortunately
|
|
this is necessary because the VS2010 output window otherwise simply loses
|
|
the error messages on error (they weren't flushed to the window before
|
|
the process exited, apparently!)
|
|
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 warnings (regardless of the system default, unless
|
|
this is disabled in which case the simplified API can't be built.)
|
|
|
|
Version 1.6.0beta19 [March 18, 2012]
|
|
Work around for duplicate row start calls; added warning messages.
|
|
This turns on PNG_FLAG_DETECT_UNINITIALIZED to detect app code that
|
|
fails to call one of the 'start' routines (not enabled in libpng-1.5
|
|
because it is technically an API change, since it did normally work
|
|
before.) It also makes duplicate calls to png_read_start_row (an
|
|
internal function called at the start of the image read) benign, as
|
|
they were before changes to use png_inflate_claim. Somehow webkit is
|
|
causing this to happen; this is probably a mis-feature in the zlib
|
|
changes so this commit is only a work-round.
|
|
Removed erroneous setting of DETECT_UNINITIALIZED and added more
|
|
checks. The code now does a png_error if an attempt is made to do the
|
|
row initialization twice; this is an application error and it has
|
|
serious consequences because the transform data in png_struct is
|
|
changed by each call.
|
|
Added application error reporting and added chunk names to read
|
|
benign errors; also added --strict to pngstest - not enabled
|
|
yet because a warning is produced.
|
|
Avoid the double gamma correction warning in the simplified API.
|
|
This allows the --strict option to pass in the pngstest checks
|
|
|
|
Version 1.6.0beta20 [March 29, 2012]
|
|
Changed chunk handler warnings into benign errors, incrementally load iCCP
|
|
Added checksum-icc.c to contrib/tools
|
|
Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice.
|
|
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.
|
|
Revised png_set_text_2() to avoid potential memory corruption (fixes
|
|
CVE-2011-3048, also known as CVE-2012-3425).
|
|
|
|
Version 1.6.0beta21 [April 27, 2012]
|
|
Revised scripts/makefile.darwin: use system zlib; remove quotes around
|
|
architecture list; add missing ppc architecture; add architecture options
|
|
to shared library link; don't try to create a shared lib based on missing
|
|
RELEASE variable.
|
|
Enable png_set_check_for_invalid_index() for both read and write.
|
|
Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpriv.h around
|
|
declaration of png_handle_unknown().
|
|
Added -lssp_nonshared in a comment in scripts/makefile.freebsd
|
|
and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE.
|
|
|
|
Version 1.6.0beta22 [May 23, 2012]
|
|
Removed need for -Wno-cast-align with clang. clang correctly warns on
|
|
alignment increasing pointer casts when -Wcast-align is passed. This
|
|
fixes the cases that clang warns about either by eliminating the
|
|
casts from png_bytep to png_uint_16p (pngread.c), or, for pngrutil.c
|
|
where the cast is previously verified or pngstest.c where it is OK, by
|
|
introducing new png_aligncast macros to do the cast in a way that clang
|
|
accepts.
|
|
|
|
Version 1.6.0beta23 [June 6, 2012]
|
|
Revised CMakeLists.txt to not attempt to make a symlink under mingw.
|
|
Made fixes for new optimization warnings from gcc 4.7.0. The compiler
|
|
performs an optimization which is safe; however it then warns about it.
|
|
Changing the type of 'palette_number' in pngvalid.c removes the warning.
|
|
Do not depend upon a GCC feature macro being available for use in generating
|
|
the linker mapfile symbol prefix.
|
|
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.
|
|
|
|
Version 1.6.0beta24 [June 7, 2012]
|
|
Don't check palette indexes if num_palette is 0 (as it can be in MNG files).
|
|
|
|
Version 1.6.0beta25 [June 16, 2012]
|
|
Revised png_set_keep_unknown_chunks() so num_chunks < 0 means ignore all
|
|
unknown chunks and all known chunks except for IHDR, PLTE, tRNS, IDAT,
|
|
and IEND. Previously it only meant ignore all unknown chunks, the
|
|
same as num_chunks == 0. Revised png_image_skip_unused_chunks() to
|
|
provide a list of chunks to be processed instead of a list of chunks to
|
|
ignore. Revised contrib/gregbook/readpng2.c accordingly.
|
|
|
|
Version 1.6.0beta26 [July 10, 2012]
|
|
Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
|
|
depends on configure, which is not included in those archives.
|
|
Moved scripts/chkfmt to contrib/tools.
|
|
Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
|
|
|
|
Version 1.6.0beta27 [August 11, 2012]
|
|
Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.
|
|
Do not use __restrict when GNUC is <= 3.1
|
|
Removed references to png_zalloc() and png_zfree() from the manual.
|
|
Fixed configurations where floating point is completely disabled. Because
|
|
of the changes to support symbol prefixing PNG_INTERNAL_FUNCTION declares
|
|
floating point APIs during libpng builds even if they are completely
|
|
disabled. This requires the png floating point types (png_double*) to be
|
|
declared even though the functions are never actually defined. This
|
|
change provides a dummy definition so that the declarations work, yet any
|
|
implementation will fail to compile because of an incomplete type.
|
|
Re-eliminated the use of strcpy() in pngtest.c. An unncessary use of
|
|
strcpy() was accidentally re-introduced in libpng16; this change replaces
|
|
it with strncpy().
|
|
Eliminated use of png_sizeof(); use sizeof() instead.
|
|
Use a consistent style for (sizeof type) and (sizeof (array))
|
|
Cleanup of png_set_filler(). This function does very different things on
|
|
read and write. In libpng 1.6 the two cases can be distinguished and
|
|
considerable code cleanup, and extra error checking, is possible. This
|
|
makes calls on the write side that have no effect be ignored with a
|
|
png_app_error(), which can be disabled in the app using
|
|
png_set_benign_errors(), and removes the spurious use of usr_channels
|
|
on the read side.
|
|
Insist on autotools 1.12.1 for git builds because there are security issues
|
|
with 1.12 and insisting on anything less would allow 1.12 to be used.
|
|
Removed info_ptr->signature[8] from WRITE-only builds.
|
|
Add some conditions for compiling png_fixed(). This is a small function
|
|
but it requires "-lm" on some platforms.
|
|
Cause pngtest --strict to fail on any warning from libpng (not just errors)
|
|
and cause it not to fail at the comparison step if libpng lacks support
|
|
for writing chunks that it reads from the input (currently only implemented
|
|
for compressed text chunks).
|
|
Make all three "make check" test programs work without READ or WRITE support.
|
|
Now "make check" will succeed even if libpng is compiled with -DPNG_NO_READ
|
|
or -DPNG_NO_WRITE. The tests performed are reduced, but the basic reading
|
|
and writing of a PNG file is always tested by one or more of the tests.
|
|
Consistently use strlen(), memset(), memcpy(), and memcmp() instead of the
|
|
png_strlen(), png_memset(), png_memcpy(), and png_memcmp() macros.
|
|
Removed the png_sizeof(), png_strlen(), png_memset(), png_memcpy(), and
|
|
png_memcmp() macros.
|
|
Work around gcc 3.x and Microsoft Visual Studio 2010 complaints. Both object
|
|
to the split initialization of num_chunks.
|
|
|
|
Version 1.6.0beta28 [August 29, 2012]
|
|
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.
|
|
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.
|
|
Corrected fix for unknown handling in pngtest. This reinstates the
|
|
libpng handling of unknown chunks other than vpAg and sTER (including
|
|
unsafe-to-copy chunks which were dropped before) and eliminates the
|
|
repositioning of vpAg and sTER in pngtest.png by changing pngtest.png
|
|
(so the chunks are where libpng would put them).
|
|
Added "tunknown" test and corrected a logic error in png_handle_unknown()
|
|
when SAVE support is absent. Moved the shell test scripts for
|
|
contrib/libtests from the libpng top directory to contrib/libtests.
|
|
png_handle_unknown() must always read or skip the chunk, if
|
|
SAVE_UNKNOWN_CHUNKS is turned off *and* the application does not set
|
|
a user callback an unknown chunk will not be read, leading to a read
|
|
error, which was revealed by the "tunknown" test.
|
|
Cleaned up and corrected ICC profile handling.
|
|
contrib/libtests/makepng: corrected 'rgb' and 'gray' cases. profile_error
|
|
messages could be truncated; made a correct buffer size calculation and
|
|
adjusted pngerror.c appropriately. png_icc_check_* checking improved;
|
|
changed the functions to receive the correct color type of the PNG on read
|
|
or write and check that it matches the color space of the profile (despite
|
|
what the comments said before, there is danger in assuming the app will
|
|
cope correctly with an RGB profile on a grayscale image and, since it
|
|
violates the PNG spec, allowing it is certain to produce inconsistent
|
|
app behavior and might even cause app crashes.) Check that profiles
|
|
contain the tags needed to process the PNG (tags all required by the ICC
|
|
spec). Removed unused PNG_STATIC from pngpriv.h.
|
|
|
|
Version 1.6.0beta29 [September 4, 2012]
|
|
Fixed the simplified API example programs to add the *colormap parameter
|
|
to several of he API and improved the error message if the version field
|
|
is not set.
|
|
Added contrib/examples/* to the *.zip and *.7z distributions.
|
|
Updated simplified API synopses and description of the png_image structure
|
|
in the manual.
|
|
Made makepng and pngtest produce identical PNGs, add "--relaxed" option
|
|
to pngtest. The "--relaxed" option turns off the benign errors that are
|
|
enabled by default in pre-RC builds. makepng can now write ICC profiles
|
|
where the length has not been extended to a multiple of 4, and pngtest
|
|
now intercepts all libpng errors, allowing the previously-introduced
|
|
"--strict test" on no warnings to actually work.
|
|
Improved ICC profile handling including cHRM chunk generation and fixed
|
|
Cygwin+MSVC build errors. The ICC profile handling now includes more
|
|
checking. Several errors that caused rejection of the profile are now
|
|
handled with a warning in such a way that the invalid profiles will be
|
|
read by default in release (but not pre-RC) builds but will not be
|
|
written by default. The easy part of handling the cHRM chunk is written,
|
|
where the ICC profile contains the required data. The more difficult
|
|
part plus guessing a gAMA value requires code to pass selected RGB values
|
|
through the profile.
|
|
|
|
Version 1.6.0beta30 [October 24, 2012]
|
|
Changed ICC profile matrix/vector types to not depend on array type rules.
|
|
By the ANSI-C standard the new types should be identical to the previous
|
|
versions, and all known versions of gcc tested with the previous versions
|
|
except for GCC-4.2.1 work with this version. The change makes the ANSI-C
|
|
rule that const applied to an array of elements applies instead to the
|
|
elements in the array moot by explicitly applying const to the base
|
|
elements of the png_icc_matrix and png_icc_vector types. The accidental
|
|
(harmless) 'const' previously applied to the parameters of two of the
|
|
functions have also been removed.
|
|
Added a work around for GCC 4.2 optimization bug.
|
|
Marked the broken (bad white point) original HP sRGB profiles correctly and
|
|
correct comments.
|
|
Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
|
|
Use /MDd for vstudio debug builds. Also added pngunkown to the vstudio
|
|
builds, fixed build errors and corrected a minor exit code error in
|
|
pngvalid if the 'touch' file name is invalid.
|
|
Add updated WARNING file to projects/vstudio from libpng 1.5/vstudio
|
|
Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
|
|
pngrtran.c (Domani Hannes).
|
|
|
|
Version 1.6.0beta31 [November 1, 2012]
|
|
Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30.
|
|
Made pngvalid so that it will build outside the libpng source tree.
|
|
Made builds -DPNG_NO_READ_GAMMA compile (the unit tests still fail).
|
|
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).
|
|
Fixed GUIDs in projects/vstudio. Some were duplicated or missing,
|
|
resulting in VS2010 having to update the files.
|
|
Removed non-working ICC profile support code that was mostly added to
|
|
libpng-1.6.0beta29 and beta30. There was too much code for too little
|
|
gain; implementing full ICC color correction may be desireable but is left
|
|
up to applications.
|
|
|
|
Version 1.6.0beta32 [November 25, 2012]
|
|
Fixed an intermittent SEGV in pngstest due to an uninitialized array element.
|
|
Added the ability for contrib/libtests/makepng.c to make a PNG with just one
|
|
color. This is useful for debugging pngstest color inaccuracy reports.
|
|
Fixed error checking in the simplified write API (Olaf van der Spek)
|
|
Made png_user_version_check() ok to use with libpng version 1.10.x and later.
|
|
|
|
Version 1.6.0beta33 [December 10, 2012]
|
|
Fixed typo in png.c (PNG_SET_CHUNK_MALLOC_MAX should be PNG_CHUNK_MALLOC_MAX)
|
|
that causes the MALLOC_MAX limit not to work (John Bowler)
|
|
Change png_warning() to png_app_error() in pngwrite.c and comment the
|
|
fall-through condition.
|
|
Change png_warning() to png_app_warning() in png_write_tRNS().
|
|
|
|
Version 1.7.0alpha01 [December 15, 2012]
|
|
Started 1.7.0 branch from libpng-1.6.0beta33.
|
|
Made 8-bit compose and rgb_to_grayscale accuracy improvements. These
|
|
changes cause 16-bit arithmetic to be used for 8-bit data in the gamma
|
|
corrected compose and grayscale operations. The arithmetic errors have
|
|
three sources all of which are fixed in this commit:
|
|
1) 8-bit linear calculations produce massive errors for lower intensity
|
|
values.
|
|
2) The old 16-bit "16 to 8" gamma table code erroneously wrote the lowest
|
|
output value into a table entry which corresponded to multiple output
|
|
values (so where the value written should have been the closest to the
|
|
transformed input value.)
|
|
3) In a number of cases the code to access the 16-bit table did not round;
|
|
it did a simple shift, which was wrong and made the side effects of (2)
|
|
even worse.
|
|
The new gamma code does not have the 16-to-8 problem at the cost of slightly
|
|
more calculations and the algorithm used to minimize the number of
|
|
calculations has been extended to all the 16-bit tables; it has advantages
|
|
for any significant gamma correction.
|
|
Rearranged png_struct, remove unused members, change png_set_filter handling
|
|
png_struct members rearranged - partly to reorder to avoid packing, partly
|
|
to put frequently accessed members at the start and partly to make
|
|
the grouping more clear. png_set_filter code has been rewritten and the
|
|
code shared with png_write_start_row moved to a common function. Comments
|
|
in png.h have been made more clear. Minor fixes to
|
|
contrib/libtests/timepng.c and some of the png_*_tRNS logic, including
|
|
more error detection in png_set_tRNS.
|
|
Cleaned up USER_LIMITS feature, removing members from png_struct when not
|
|
required.
|
|
Rearranged ARM-NEON optimizations to isolate the machine specific code to
|
|
the hardware subdirectory, and add comments to pngrutil.c so that
|
|
implementors of other optimizations will know what to do.
|
|
Fixed cases of unquoted DESTDIR in Makefile.am.
|
|
Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.12.5.
|
|
|
|
Version 1.7.0alpha02 [December 17, 2012]
|
|
Removed functions that were deprecated in libpng-1.6.0:
|
|
png_reset_zstream(), png_info_init_3(), png_data_freer() and its
|
|
associated flags, png_malloc_default, and png_free_default.
|
|
Removed some duplicated lines from contrib/tools/scale.c and png.c.
|
|
Changed some instances of png_warning() to png_app_error().
|
|
Updated some left over "1.6.0beta32" in code sources.
|
|
Fixed a "png_structp" prototype (should be png_structrp) in arm_init.c
|
|
Updated the version-number hack in pngvalid.c
|
|
|
|
Version 1.7.0alpha03 [December 19, 2012]
|
|
Cleaned up and enhanced the configure option; libpng now correctly
|
|
links and tests against zlib with a prefix; tests have been clarified; and
|
|
irrelevant or obsolete things (as defined by the autotools man page) have
|
|
been removed.
|
|
Documented new PNG_ABORT behavior in the manual and commentary in pngerror.c
|
|
Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
|
|
Fixed previous support for Z_PREFIX in configure builds, corrected sCAL APIs;
|
|
some of these use floating point arithmetic so they need to be disabled if
|
|
floating point arithmetic is switched off. This is a quiet API change -
|
|
previously it appeared that the APIs were supported if fixed point
|
|
arithmetic was used internally, however they required certain APIs (floor,
|
|
modf, frexp, atof) that are part of C floating point support. Changed
|
|
png_fixed and the gamma code specific version of the same to avoid floor(),
|
|
which may be a library function (not an intrinsic). Removed unused #if 0
|
|
code.
|
|
Disassembled the version number in scripts/options.awk (necessary for
|
|
building on SunOs).
|
|
|
|
Version 1.7.0alpha04 [December 23, 2012]
|
|
Added scripts/makefile.msys contributed by Christopher M. Wheeler
|
|
Made default Zlib compression settings be configurable. This adds #defines to
|
|
pnglibconf.h to control the defaults.
|
|
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.
|
|
|
|
Version 1.7.0alpha05 [December 24, 2012]
|
|
Discontinued distributing libpng-1.x.x.tar.bz2.
|
|
Discontinued distributing libpng-1.7.0-1.6.0-diff.txt and similar.
|
|
|
|
Version 1.7.0alpha06 [January 1, 2013]
|
|
Fixed 'make distcheck' on SUN OS - libpng.so was not being removed
|
|
|
|
Version 1.7.0alpha07 [January 10, 2013]
|
|
Fixed conceivable but difficult to repro overflow. Also added two test
|
|
programs to generate and test a PNG which should have the problem.
|
|
|
|
Version 1.7.0alpha08 [January 17, 2013]
|
|
Corrected previous attempt at overflow detection in png_set_unknown_chunks()
|
|
(CVE-2013-7353). Added overflow detection in png_set_sPLT() and
|
|
png_set_text_2() (CVE-2013-7354).
|
|
|
|
Version 1.7.0alpha09 [January 21, 2013]
|
|
Pulled changes to multi-chunk handling from libpng-1.6.0beta40.
|
|
|
|
Version 1.7.0alpha10 [February 5, 2013]
|
|
Make symbol prefixing work with the ARM neon optimizations. Also
|
|
allow pngpriv.h to be included for preprocessor definitions only, so
|
|
it can be used in non-C/C++ files.
|
|
Added png_get_palette_max() function.
|
|
Changed png_size_t to size_t throughout headers, make sRGB check numbers
|
|
consistent.
|
|
Fixed ARM support (Mans Rullgard).
|
|
Removed stray out-of-order #endif and #ifdef (Mans Rullgard).
|
|
Ported libpng 1.5 options.awk/dfn file handling to 1.7, fixed one bug.
|
|
Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.13.
|
|
Minor fixes to assembler changes, verified with a dummy .S file
|
|
Removed cc -E workround, corrected png_get_palette_max API. Tested on
|
|
SUN OS cc 5.9, which demonstrates the tokenization problem previously
|
|
avoided by using /lib/cpp. Since all .dfn output is now protected
|
|
in double quotes unless it is to be macro substituted the fix should work
|
|
everywhere.
|
|
|
|
Version 1.7.0beta01 [February 15, 2013]
|
|
Enable parallel tests and rearrange TESTS order to take advantage of
|
|
the massive speed improvements use a make capable of parallel builds
|
|
on a multi-CPU machine and pass the right arguments to make (-j10000
|
|
for GNU make) to get the build to run in parallel.
|
|
Fixed previous support for Z_PREFIX in configure builds, corrected
|
|
sCAL APIs; some of these use floating point arithmetic so need to be
|
|
disabled if floating point arithmetic is switched off. This is a quiet API
|
|
change - previously it appeared that the APIs were supported if fixed point
|
|
arithmetic was used internally, however they required certain APIs (floor,
|
|
modf, frexp, atof) that are part of C floating point support. Changed
|
|
png_fixed and the gamma code specific version of the same to avoid floor(),
|
|
which may be a library function (not an intrinsic). Removed unused #if 0
|
|
code.
|
|
Fixed make distcheck to skip over the test result files. They were
|
|
being included because the whole of the 'tests' directory is included,
|
|
fixed to just include the actual test files and tests/pngstest. Also
|
|
reverted the previous erroneous change to remove the ${srcdir} from the
|
|
front of contrib, scripts, projects and added an explanation of what is
|
|
going on to Makefile.am
|
|
Fixed missing dependency in --prefix builds. The intermediate
|
|
internal 'prefix.h' file can only be generated correctly after pnglibconf.h,
|
|
however the dependency was not in Makefile.am. The symptoms are
|
|
unpredictable depending on the order make chooses to build pngprefix.h and
|
|
pnglibconf.h, often the error goes unnoticed because there is a system
|
|
pnglibconf.h to use instead.
|
|
Accept "," as a separator in pnglibconf.dfa and allow for
|
|
continuation lines. This adds to the syntax of "option" and "chunk" lines,
|
|
allowing the elements to be separated by a "," at the end of an element and
|
|
interpreting a "," at end of line as a continuation - so the following line
|
|
is read. The new syntax is optional and solely provided for readability.
|
|
Enclosed the new png_get_palette_max in #ifdef PNG_GET_PALETTE_MAX_SUPPORTED
|
|
block, and revised pnglibconf.h and pnglibconf.h.prebuilt accordingly.
|
|
|
|
Version 1.7.0beta02 [February 18, 2013]
|
|
Fixed a race condition in the creation of the build 'scripts' directory
|
|
while building with a parallel make.
|
|
Use approved/supported Android method to check for NEON, use Linux/POSIX
|
|
1003.1 API to check /proc/self/auxv avoiding buffer allocation and other
|
|
library calls (ported from libpng15).
|
|
Use parentheses more consistently in "#if defined(MACRO)" tests.
|
|
Folded long lines.
|
|
|
|
Version 1.7.0beta03 [February 22, 2013]
|
|
Reenabled code to allow zero length PLTE chunks for MNG.
|
|
Fixed ALIGNED_MEMORY support.
|
|
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.)
|
|
Updated the INSTALL document.
|
|
|
|
Version 1.7.0beta04 [February 27, 2013]
|
|
Revised INSTALL to recommend using CPPFLAGS instead of INCLUDES.
|
|
Revised scripts/makefile.freebsd to respect ZLIBLIB and ZLIBINC.
|
|
Revised scripts/dfn.awk to work with the buggy MSYS awk that has trouble
|
|
with CRLF line endings.
|
|
|
|
Version 1.7.0beta05 [March 5, 2013]
|
|
Avoid a possible memory leak in contrib/gregbook/readpng.c
|
|
Changed user chunk callback API to respect global and per chunk defaults.
|
|
Previously a return of 0 from a user chunk callback would result in the
|
|
chunk being saved (if this was safe, even if the chunk was unsafe-to-copy);
|
|
this change respects the defaults set by the application, so unknown chunks
|
|
can be discarded by default and known-safe ones preserved.
|
|
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.
|
|
|
|
Version 1.7.0beta06 [March 13, 2013]
|
|
Corrected simplified API default gamma for color-mapped output, added
|
|
a flag to change default. In 1.6.0 when the simplified API was used
|
|
to produce color-mapped output from an input image with no gamma
|
|
information the gamma assumed for the input could be different from
|
|
that assumed for non-color-mapped output. In particular 16-bit depth
|
|
input files were assumed to be sRGB encoded, whereas in the 'direct'
|
|
case they were assumed to have linear data. This was an error. The
|
|
fix makes the simplified API treat all input files the same way and
|
|
adds a new flag to the png_image::flags member to allow the
|
|
application/user to specify that 16-bit files contain sRGB data
|
|
rather than the default linear.
|
|
Fixed bugs in the pngpixel and makepng test programs.
|
|
Fixed CMakelists.txt to allow building a single variant of the library
|
|
(Claudio Bley):
|
|
Introduced a PNG_LIB_TARGETS variable that lists all activated library
|
|
targets. It is an error if this variable ends up empty, ie. you have
|
|
to build at least one library variant.
|
|
Made the *_COPY targets only depend on library targets actually being build.
|
|
Use PNG_LIB_TARGETS to unify a code path.
|
|
Changed the CREATE_SYMLINK macro to expect the full path to a file as the
|
|
first argument. When symlinking the filename component of that path is
|
|
determined and used as the link target.
|
|
Use copy_if_different in the CREATE_SYMLINK macro.
|
|
Eliminated two warnings from the Intel C compiler. The warnings are
|
|
technically valid, although a reasonable treatment of division would
|
|
show it to be incorrect.
|
|
|
|
Version 1.7.0beta07 [April 14, 2013]
|
|
Updated documentation of 1.5.x to 1.6.x changes in iCCP chunk handling.
|
|
Fixed incorrect warning of excess deflate data. End condition - the
|
|
warning would be produced if the end of the deflate stream wasn't read
|
|
in the last row. The warning is harmless.
|
|
Corrected the test on user transform changes on read. It was in the
|
|
png_set of the transform function, but that doesn't matter unless the
|
|
transform function changes the rowbuf size, and that is only valid if
|
|
transform_info is called.
|
|
Corrected a misplaced closing bracket in contrib/libtests/pngvalid.c
|
|
(Flavio Medeiros).
|
|
Corrected length written to uncompressed iTXt chunks (Samuli Suominen).
|
|
|
|
Version 1.7.0beta08 [April 18, 2013]
|
|
Added contrib/tools/fixitxt.c, to repair the erroneous iTXt chunk length
|
|
written by libpng-1.6.0 and 1.6.1.
|
|
Disallow storing sRGB information when the sRGB is not supported.
|
|
|
|
Version 1.7.0beta09 [April 24, 2013]
|
|
Exposed PNG chunk types in png.h
|
|
Modified png_uint_32 macros/code to make as few assumptions as possible
|
|
about the hardware.
|
|
Revised stack marking in arm/filter_neon.S and configure.ac.
|
|
Ensure that NEON filter stuff is completely disabled when switched 'off'.
|
|
Previously the ARM NEON specific files were still built if the option
|
|
was switched 'off' as opposed to being explicitly disabled.
|
|
|
|
Version 1.7.0beta10 [April 24, 2013]
|
|
Attempt to fix the PNG_ARM_NEON configuration mess.
|
|
|
|
Version 1.7.0beta11 [April 26, 2013]
|
|
Test for 'arm*', not just 'arm' in the host_cpu configure variable.
|
|
|
|
Version 1.7.0beta12 [April 30, 2013]
|
|
Added png_app_warning for out-of-range unknown chunk index in
|
|
png_set_unknown_chunk_location().
|
|
Expanded manual paragraph about writing private chunks.
|
|
Avoid dereferencing NULL pointer possibly returned from
|
|
png_create_write_struct() (Andrew Church).
|
|
|
|
Version 1.7.0beta13 [May 12, 2013]
|
|
Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the
|
|
right zlib header files.
|
|
Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile
|
|
Updated contrib/pngminus/pnm2png.c (Paul Stewart):
|
|
Check for EOF
|
|
Ignore "#" delimited comments in input file to pnm2png.c.
|
|
Fixed whitespace handling
|
|
Added a call to png_set_packing()
|
|
Initialize dimension values so if sscanf fails at least we have known
|
|
invalid values.
|
|
Calculate our own zlib windowBits when decoding rather than trusting the
|
|
CMF bytes in the PNG datastream.
|
|
Added an option to force maximum window size for inflating, which was
|
|
the behavior of libpng15 and earlier.
|
|
Added png-fix-itxt and png-fix-too-far-back to the built programs and
|
|
removed warnings from the source code and timepng that are revealed as
|
|
a result.
|
|
Detect wrong libpng versions linked to png-fix-too-far-back, which currently
|
|
only works with libpng versions that can be made to reliably fail when
|
|
the deflate data contains an out-of-window reference. This means only
|
|
1.6 and later.
|
|
Attempt to detect configuration issues with png-fix-too-far-back, which
|
|
requires both the correct libpng and the correct zlib to function
|
|
correctly.
|
|
Check ZLIB_VERNUM for mismatches, enclose #error in quotes
|
|
Added information in the documentation about problems with and fixes for
|
|
the bad CRC and bad iTXt chunk situations.
|
|
|
|
Version 1.7.0beta14 [June 8, 2013]
|
|
Removed a redundant test in png_set_IHDR().
|
|
Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt)
|
|
Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt
|
|
Enclose the prototypes for the simplified write API in #ifdef STDIO/#endif
|
|
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.
|
|
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.
|
|
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.
|
|
|
|
Version 1.7.0beta15 [June 18, 2013]
|
|
Revised libpng.3 so that "doclifter" can process it.
|
|
|
|
Version 1.7.0beta16 [July 5, 2013]
|
|
Revised example.c to illustrate use of PNG_DEFAULT_sRGB and PNG_GAMMA_MAC_18
|
|
as parameters for png_set_gamma(). These have been available since
|
|
libpng-1.5.4.
|
|
Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it
|
|
to check all compressed chunks known to libpng.
|
|
Updated documentation to show default behavior of benign errors correctly.
|
|
Added perfect hash code generation for lists of PNG chunks. This is
|
|
a work in progress; checked in for use in pngfix.c
|
|
Ported ARM no-read patch from libpng16.
|
|
Ported pngfix.c patches from libpng16.
|
|
|
|
Version 1.7.0beta17 [August 21, 2013]
|
|
Revised manual about changes in iTXt chunk handling made in libpng-1.6.0.
|
|
Added "/* SAFE */" comments in pngrutil.c and pngrtran.c where warnings
|
|
may be erroneously issued by code-checking applications.
|
|
Added information about png_set_options() to the manual.
|
|
Delay calling png_init_filter_functions() until a row with nonzero filter
|
|
is found.
|
|
|
|
Version 1.7.0beta18 [September 16, 2013]
|
|
Fixed inconsistent conditional compilation of png_chunk_unknown_handling()
|
|
prototype, definition, and usage. Made it depend on
|
|
PNG_HANDLE_AS_UNKNOWN_SUPPORTED everywhere.
|
|
|
|
Version 1.7.0beta19 [September 30, 2013]
|
|
Reverted the change to unknown handling #defines; the change breaks 'NOREAD'
|
|
builds.
|
|
Fixed default behavior of ARM_NEON_API. If the ARM NEON API option is
|
|
compiled without the CHECK option it defaulted to on, not off.
|
|
Catch up with recent libpng16 changes; unknown handling and spelling
|
|
corrections
|
|
Avoid up-cast warnings in pngvalid.c. On ARM the alignment requirements of
|
|
png_modifier are greater than that of png_store and as a consequence
|
|
compilation of pngvalid.c results in a warning about increased alignment
|
|
requirements because of the bare cast to (png_modifier*). The code is
|
|
safe, because the pointer is known to point to a stack allocated
|
|
png_modifier, but this change avoids the warning.
|
|
Fixed some grammatical changes and updated the png chunks list.
|
|
|
|
Version 1.7.0beta20 [October 13, 2013]
|
|
Made changes for compatibility with automake 1.14:
|
|
1) Added the 'compile' program to the list of programs that must be cleaned
|
|
in autogen.sh
|
|
2) Added 'subdir-objects' which causes .c files in sub-directories to be
|
|
compiled such that the corresponding .o files are also in the
|
|
sub-directory. This is because automake 1.14 warns that the
|
|
current behavior of compiling to the top level directory may be removed
|
|
in the future.
|
|
3) Updated dependencies on pnglibconf.h to match the new .o locations and
|
|
added all the files in contrib/libtests and contrib/tools that depend
|
|
on pnglibconf.h
|
|
4) Added 'BUILD_SOURCES = pnglibconf.h'; this is the automake recommended
|
|
way of handling the dependencies of sources that are machine generated;
|
|
unfortunately it only works if the user does 'make all' or 'make check',
|
|
so the dependencies (3) are still required.
|
|
Cleaned up (char*) casts of zlib messages. The latest version of the Intel C
|
|
compiler complains about casting a string literal as (char*), so copied the
|
|
treatment of z_const from the library code into pngfix.c
|
|
Simplified error message code in pngunknown. The simplification has the
|
|
useful side effect of avoiding a bogus warning generated by the latest
|
|
version of the Intel C compiler (it objects to
|
|
condition ? string-literal : string-literal).
|
|
Make autogen.sh work with automake 1.13 as well as 1.14. Do this by always
|
|
removing the 1.14 'compile' script but never checking for it.
|
|
|
|
Version 1.7.0beta21 [November 2, 2013]
|
|
Added ARMv8 support (James Yu <james.yu at linaro.org>). Added file
|
|
arm/filter_neon_intrinsics.c; enable with -mfpu=neon.
|
|
Revised pngvalid to generate size images with as many filters as it can
|
|
manage, limited by the number of rows.
|
|
Cleaned up ARM NEON compilation handling. The tests are now in pngpriv.h
|
|
and detect the broken GCC compilers.
|
|
Allow clang derived from older GCC versions to use ARM intrinsics. This
|
|
causes all clang builds that use -mfpu=neon to use the intrinsics code,
|
|
not the assembler code. This has only been tested on iOS 7. It may be
|
|
necessary to exclude some earlier clang versions but this seems unlikely.
|
|
Changed NEON implementation selection mechanism. This allows assembler
|
|
or intrinsics to be turned on at compile time during the build by defining
|
|
PNG_ARM_NEON_IMPLEMENTATION to the correct value (2 or 1). This macro
|
|
is undefined by default and the build type is selected in pngpriv.h.
|
|
|
|
Version 1.7.0beta22 [November 7, 2013]
|
|
Fixed #include in filter_neon_intrinsics.c and ctype macros. The ctype char
|
|
checking macros take an unsigned char argument, not a signed char.
|
|
|
|
Version 1.7.0beta23 [November 24, 2013]
|
|
Changed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpread.c to
|
|
#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED to be consistent with
|
|
what is in pngpriv.h.
|
|
Moved prototype for png_handle_unknown() in pngpriv.h outside of
|
|
the #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED/#endif block.
|
|
Added "-Wall" to CFLAGS in contrib/pngminim/*/makefile
|
|
Conditionally compile some unused functions reported by -Wall in
|
|
pngminim.
|
|
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.
|
|
Enabled WRITE_INVERT and WRITE_PACK in contrib/pngminim/encoder.
|
|
Fixed pngvalid 'fail' function declaration on the Intel C Compiler.
|
|
This reverts to the previous 'static' implementation and works round
|
|
the 'unused static function' warning by using PNG_UNUSED().
|
|
|
|
Version 1.7.0beta24 [December 15, 2013]
|
|
Removed or marked PNG_UNUSED some harmless "dead assignments" reported
|
|
by clang scan-build.
|
|
Changed tabs to 3 spaces in png_debug macros and changed '"%s"m'
|
|
to '"%s" m' to improve portability among compilers.
|
|
Changed png_free_default() to free() in pngtest.c
|
|
Tidied up pngfix inits and fixed pngtest no-write builds.
|
|
Bookkeeping: Moved functions around (no changes). Moved transform
|
|
function definitions before the place where they are called so that
|
|
they can be made 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
|
|
Made transform implementation functions static. This makes the internal
|
|
functions called by png_do_{read|write}_transformations static. On an
|
|
x86-64 DLL build (Gentoo Linux) this reduces the size of the text
|
|
segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
|
|
maintenance by removing the declarations from pngpriv.h and allowing
|
|
easier changes to the internal interfaces.
|
|
Handle zero-length PLTE chunk or NULL palette with png_error()
|
|
instead of png_chunk_report(), which by default issues a warning
|
|
rather than an error, leading to later reading from a NULL pointer
|
|
(png_ptr->palette) in png_do_expand_palette(). This is CVE-2013-6954
|
|
and VU#650142. Libpng-1.6.1 through 1.6.7 and libpng-1.7.0beta03
|
|
through 1.7.0beta23 are vulnerable. Libpng-1.6.0 and earlier do not
|
|
have the bug.
|
|
|
|
Version 1.7.0beta25 [December 26, 2013]
|
|
Merged files with version 1.6.8 that have not changed since then.
|
|
Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
|
|
|
|
Version 1.7.0beta26 [January 1, 2014]
|
|
Added libpng 1.5 checks to pngvalid.c
|
|
Merged with 1.5 and 1.6 changes to create a single pngvalid.c
|
|
Added dSIG to chunk list in png.h
|
|
Removed #error macro from contrib/tools/pngfix.c (Thomas Klausner).
|
|
Merged pngrio.c, pngtrans.c, and pngwio.c with libpng-1.6.9
|
|
Fixed test programs for interlace options. Made pngvalid.c and
|
|
pngtest.c work correctly when READ_INTERLACING and/or WRITE_INTERLACING
|
|
are switched off.
|
|
Changed pngvalid.c to support libpng 1.5, which does not support
|
|
the PNG_MAXIMUM_INFLATE_WINDOW option, so #define it out when
|
|
appropriate in pngvalid.c
|
|
Allow unversioned links created on install to be disabled in configure.
|
|
In configure builds 'make install' changes/adds links like png.h
|
|
and libpng.a to point to the newly installed, versioned, files (e.g.
|
|
libpng17/png.h and libpng17.a). Three new configure options and some
|
|
rearrangement of Makefile.am allow creation of these links to be disabled.
|
|
|
|
Version 1.7.0beta27 [January 10, 2014]
|
|
Removed potentially misleading warning from png_check_IHDR().
|
|
|
|
Version 1.7.0beta28 [January 20, 2014]
|
|
Updated scripts/makefile.* to use CPPFLAGS (Cosmin).
|
|
Added clang attribute support (Cosmin).
|
|
|
|
Version 1.7.0beta29 [January 30, 2014]
|
|
Quiet an uninitialized memory warning from VS2013 in png_get_png().
|
|
|
|
Version 1.7.0beta30 [February 2, 2014]
|
|
Fixed a large number of instances where PNGCBAPI was omitted from
|
|
function definitions.
|
|
Added pngimage test program for png_read_png and png_write_png. This
|
|
is a work-in-progress; no tests are run automatically at present and
|
|
the program by virtue of exhaustively testing all the transforms is
|
|
very slow.
|
|
|
|
Version 1.7.0beta31 [February 6, 2014]
|
|
Make png_read_png() and png_write_png() prototypes in png.h depend
|
|
upon PNG_READ_SUPPORTED and PNG_WRITE_SUPPORTED.
|
|
Removed dependence on !PNG_READ_EXPAND_SUPPORTED for calling
|
|
png_set_packing() in png_read_png().
|
|
Completed full working pngimage test program and added two test scripts.
|
|
Fixed combination of ~alpha with shift. On read invert alpha, processing
|
|
occurred after shift processing, which causes the final values to be
|
|
outside the range that should be produced by the shift. Reversing the
|
|
order on read makes the two transforms work together correctly and mirrors
|
|
the order used on write.
|
|
Do not read invalid sBIT chunks. Previously libpng only checked sBIT
|
|
values on write, so a malicious PNG writer could therefore cause
|
|
the read code to return an invalid sBIT chunk, which might lead to
|
|
application errors or crashes. Such chunks are now skipped (with
|
|
chunk_benign_error).
|
|
Restored a line, "c = b;", that was inadvertently deleted from the
|
|
PAETH filtering code from libpng-1.7.0beta24/pngrutil.c. Deleted
|
|
the other instance of "c = b;" which is the one that triggered a
|
|
scan-build warning.
|
|
Support builds with unsupported PNG_TRANSFORM_* values. All of the
|
|
PNG_TRANSFORM_* values are always defined in png.h and, because they
|
|
are used for both read and write in some cases, it is not reliable
|
|
to #if out ones that are totally unsupported. This change adds error
|
|
detection in png_read_image() and png_write_image() to do a
|
|
png_app_error() if the app requests something that cannot be done
|
|
and it adds corresponding code to pngimage.c to handle such options
|
|
by not attempting to test them.
|
|
|
|
Version 1.7.0beta32 [February 26, 2014]
|
|
Moved redefines of png_error(), png_warning(), png_chunk_error(),
|
|
and png_chunk_warning() from pngpriv.h to png.h to make them visible
|
|
to libpng-calling applications.
|
|
Moved OS dependent code from arm/arm_init.c, to allow the included
|
|
implementation of the ARM NEON discovery function to be set at
|
|
build-time and provide sample implementations from the current code in the
|
|
contrib/arm-neon subdirectory. The __linux__ code has also been changed to
|
|
compile and link on Android by using /proc/cpuinfo, and the old linux code
|
|
is in contrib/arm-neon/linux-auxv.c. The new code avoids POSIX and Linux
|
|
dependencies apart from opening /proc/cpuinfo and is C90 compliant.
|
|
Check for info_ptr == NULL early in png_read_end() so we don't need to
|
|
run all the png_handle_*() and depend on them to return if info_ptr == NULL.
|
|
This improves the performance of png_read_end(png_ptr, NULL) and makes
|
|
it more robust against future programming errors.
|
|
Check for __has_extension before using it in pngconf.h, to
|
|
support older Clang versions (Jeremy Sequoia).
|
|
Use a user warning handler in contrib/gregbook/readpng2.c instead of default,
|
|
so warnings will be put on stderr even if libpng has CONSOLE_IO disabled.
|
|
Added png_ptr->process_mode = PNG_READ_IDAT_MODE in png_push_read_chunk
|
|
after recognizing the IDAT chunk, which avoids an infinite loop while
|
|
reading a datastream whose first IDAT chunk is of zero-length.
|
|
This fixes CERT VU#684412 and CVE-2014-0333.
|
|
Don't recognize known sRGB profiles as sRGB if they have been hacked,
|
|
but don't reject them and don't issue a copyright violation warning.
|
|
Minor editing of contrib/arm-neon/README and contrib/examples/*.c
|
|
Moved some documentation from png.h to libpng.3 and libpng-manual.txt
|
|
|
|
Version 1.7.0beta33 [February 27, 2014]
|
|
Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS
|
|
and PNG_USR_CONFIG -> PNG_USER_CONFIG).
|
|
|
|
Version 1.7.0beta34 [March 17, 2014]
|
|
Treat CRC error handling with png_set_crc_action(), instead of with
|
|
png_set_benign_errors(), which has been the case since libpng-1.6.0beta18.
|
|
Use "if (value != 0)" instead of "if (value)" consistently.
|
|
Changed ZlibSrcDir from 1.2.5 to 1.2.8 in projects/vstudio.
|
|
Moved configuration information from the manual to the INSTALL file.
|
|
|
|
Version 1.7.0beta35 [August 6, 2014]
|
|
Removed #if/#else/#endif from inside two pow() calls in pngvalid.c because
|
|
they were handled improperly by Portland Group's PGI-14.1 - PGI-14.3
|
|
when using its "__builtin_pow()" function.
|
|
Silence 'unused parameter' build warnings (Cosmin).
|
|
$(CP) is now used alongside $(RM_F). Also, use 'copy' instead
|
|
of 'cp' where applicable, and applied other minor makefile changes.
|
|
Don't warn about invalid dimensions exceeding user limits.
|
|
Allow an easy replacement of the default pre-built configuration
|
|
header with a custom header, via the make PNGLIBCONF_H_PREBUILT
|
|
macro.
|
|
Fixed a typo in pngrutil.c, introduced in libpng-1.5.6, that interferes
|
|
with "blocky" expansion of sub-8-bit interlaced PNG files (Eric Huss).
|
|
Removed scripts/makefile.elf. It has not worked since libpng-1.5.0beta14
|
|
due to elimination of the PNG_FUNCTION_EXPORT and PNG_DATA_EXPORT
|
|
definitions from pngconf.h.
|
|
Ensure that CMakeLists.txt makes the target "lib" directory before making
|
|
symbolic link into it (SourceForge bug report #226 by Rolf Timmermans).
|
|
Added opinion that the ECCN (Export Control Classification Number) for
|
|
libpng is EAR99 to the README file.
|
|
|
|
Version 1.7.0beta36 [September 27, 2014]
|
|
Updated scripts/makefiles from libpng-1.6.13beta04.
|
|
Minor updates to the manual from libpng-1.6.14beta04.
|
|
Fixed incorrect handling of the iTXt compression flag in pngrutil.c
|
|
(bug report by Shunsaku Hirata). Bug was introduced in libpng-1.6.0.
|
|
|
|
Version 1.7.0beta37 [September 28, 2014]
|
|
Merged scripts/*, pngvalid.c and pngfix.c with libpng-1.6.14beta04.
|
|
|
|
Version 1.7.0beta38 [October 17, 2014]
|
|
Added "option READ_iCCP enables READ_COMPRESSED_TEXT" to pnglibconf.dfa
|
|
Removed unused "text_len" parameter from private function png_write_zTXt().
|
|
Conditionally compile some code in png_deflate_claim(), when
|
|
PNG_WARNINGS_SUPPORTED and PNG_ERROR_TEXT_SUPPORTED are disabled.
|
|
Replaced repeated code in pngpread.c with PNG_PUSH_SAVE_BUFFER_IF_FULL.
|
|
Added "chunk iTXt enables TEXT" and "chunk zTXt enables TEXT"
|
|
to pnglibconf.dfa.
|
|
Removed "option READ_COMPRESSED_TEXT enables READ_TEXT" from pnglibconf.dfa,
|
|
to make it possible to configure a libpng that supports iCCP but not TEXT.
|
|
Removed "option WRITE_COMPRESSED_TEXT enables WRITE_TEXT" from pnglibconf.dfa
|
|
Only mark text chunks as written after successfully writing them.
|
|
|
|
Version 1.7.0beta39 [November 1, 2014]
|
|
Ported cosmetic changes from libpng-1.6.15beta02.
|
|
|
|
Version 1.7.0beta40 [November 6, 2014]
|
|
Made a one-line revision to configure.ac to support ARM on aarch64
|
|
(bug report by Marcin Juszkiewicz, fix by John Bowler).
|
|
Use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING in
|
|
example.c, pngtest.c, and applications in the contrib directory.
|
|
Avoid out-of-bounds memory access in png_user_version_check().
|
|
Simplified and future-proofed png_user_version_check().
|
|
Fixed GCC unsigned int->float warnings. Various versions of GCC
|
|
seem to generate warnings when an unsigned value is implicitly
|
|
converted to double. This is probably a GCC bug but this change
|
|
avoids the issue by explicitly converting to (int) where safe.
|
|
Free all allocated memory in pngimage. The file buffer cache was left
|
|
allocated at the end of the program, harmless but it causes memory
|
|
leak reports from clang.
|
|
Fixed array size calculations to avoid warnings. At various points
|
|
in the code the number of elements in an array is calculated using
|
|
sizeof. This generates a compile time constant of type (size_t) which
|
|
is then typically assigned to an (unsigned int) or (int). Some versions
|
|
of GCC on 64-bit systems warn about the apparent narrowing, even though
|
|
the same compiler does apparently generate the correct, in-range,
|
|
numeric constant. This adds appropriate, safe, casts to make the
|
|
warnings go away.
|
|
|
|
Version 1.7.0beta41 [November 7, 2014]
|
|
Added #ifdef PNG_16BIT_SUPPORTED/#endif around png_log16bit() and
|
|
png_do_swap().
|
|
Changed all "#endif /* PNG_FEATURE_SUPPORTED */" to "#endif /* FEATURE */"
|
|
|
|
Version 1.7.0beta42 [November 20, 2014]
|
|
The macros passed in the command line to Borland make were ignored if
|
|
similarly-named macros were already defined in makefiles. This behavior
|
|
is different from POSIX make and other make programs. Surround the
|
|
macro definitions with ifndef guards (Cosmin).
|
|
Added "-D_CRT_SECURE_NO_WARNINGS" to CFLAGS in scripts/makefile.vcwin32.
|
|
Removed the obsolete $ARCH variable from scripts/makefile.darwin.
|
|
Merged clang no-warning fix from libpng-1.6.13: png_digit was defined
|
|
but never used in pngerror.c.
|
|
|
|
Version 1.7.0beta43 [December 18, 2014]
|
|
Added ".align 2" to arm/filter_neon.S to support old GAS assemblers that
|
|
don't do alignment correctly.
|
|
Revised Makefile.am and scripts/*.dfn to work with MinGW/MSYS;
|
|
renamed scripts/*.dfn to scripts/*.c (Bob Friesenhahn and John Bowler).
|
|
Quiet a "comparison always true" warning in pngstest.c (John Bowler).
|
|
|
|
Version 1.7.0beta44 [December 23, 2014]
|
|
Restored a test on width that was removed from png.c at libpng-1.6.9
|
|
(Bug report by Alex Eubanks, CVE-2015-0973).
|
|
Fixed an overflow in png_combine_row() with very wide interlaced images
|
|
(Bug report and fix by John Bowler, CVE-2014-9475).
|
|
Corrected the width limit calculation in png_check_IHDR().
|
|
Removed extraneous handling of PNG_SAFE_LIMITS_SUPPORTED from pngconf.h
|
|
|
|
Version 1.7.0beta45 [December 28, 2014]
|
|
Eliminated the PNG_SAFE_LIMITS macro and restored the 1-million-column
|
|
and 1-million-row default limits in pnglibconf.dfa, that can be reset
|
|
by the user at build time or run time. This provides a more robust
|
|
defense against DOS and as-yet undiscovered overflows.
|
|
Removed user limits from pngfix. Also pass NULL pointers to
|
|
png_read_row to skip the unnecessary row de-interlace stuff.
|
|
Added testing of png_set_packing() to pngvalid.c
|
|
|
|
Version 1.7.0beta46 [January 2, 2015]
|
|
Regenerated configure scripts in the tar distributions with libtool-2.4.4
|
|
Implement previously untested cases of libpng transforms in pngvalid.c
|
|
Fixed byte order in png_do_read_filler() with 16-bit input. Previously
|
|
the high and low bytes of the filler, from png_set_filler() or from
|
|
png_set_add_alpha(), were read in the wrong order.
|
|
Allow user to call png_get_IHDR() with NULL arguments (Reuben Hawkins).
|
|
|
|
Version 1.7.0beta47 [January 29, 2015]
|
|
Made the check for out-of-range values in png_set_tRNS() detect
|
|
values that are exactly 2^bit_depth, and work on 16-bit platforms.
|
|
Added PNG_SKIP_sRGB_CHECK_PROFILE choice for png_set_option().
|
|
Report all IHDR errors before exiting png_check_IHDR().
|
|
Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47.
|
|
Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
|
|
pngset.c to avoid warnings about dead code.
|
|
|
|
Version 1.7.0beta48 [February 7, 2015]
|
|
Work around one more Coverity-scan dead-code warning.
|
|
Do not build png_product2() when it is unused.
|
|
|
|
Version 1.7.0beta49 [February 11, 2015]
|
|
Combined sub_row, up_row, avg_row, and paeth_row buffers into a
|
|
single try_row buffer.
|
|
Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.
|
|
Consolidated redundant code in pngwutil.c
|
|
Deal with integer overflow of sum in pngwutil.c
|
|
|
|
Version 1.7.0beta50 [February 15, 2015]
|
|
Combined sub_row, up_row, avg_row, and paeth_row buffers into a
|
|
single try_row buffer and in cases where two or more of those are
|
|
being tested, a second tst_row buffer. This improves CPU speed
|
|
over that achieved by libpng-1.7.0beta49.
|
|
|
|
Version 1.7.0beta51 [February 17, 2015]
|
|
Combined similar parts of png_write_find_filter() into a png_increase_lmins()
|
|
function.
|
|
Display user limits in the output from pngtest.
|
|
Replaced test for harmless integer overflow (wraparound) in pngwutil.c
|
|
with a method that prevents overflow and does not increase cpu usage
|
|
significantly.
|
|
|
|
Version 1.7.0beta52 [February 21, 2015]
|
|
Added information about setjmp/simplified API interaction in the
|
|
manual page and INSTALL file. Added information about using
|
|
row_pointers with a single height*width*bpp allocated block
|
|
to the manual page.
|
|
Rebuilt configure scripts with automake-1.15 and libtool-2.4.6
|
|
|
|
Version 1.7.0beta53 [February 23, 2015]
|
|
Restored compiling of png_reciprocal2 with PNG_NO_16BIT.
|
|
|
|
Version 1.7.0beta54 [March 4, 2015]
|
|
Moved png_set_filter() prototype into a PNG_WRITE_SUPPORTED block
|
|
of png.h.
|
|
Conditionally compile a small amount of code in pngwutil.c
|
|
Avoid runtime checks when converting integer to png_byte with
|
|
Visual Studio (Sergey Kosarevsky)
|
|
Merged pngwrite.c with libpng-1.6.17beta06/pngwrite.c
|
|
|
|
Version 1.7.0beta55 [March 9, 2015]
|
|
Removed some comments that the configure script did not handle
|
|
properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt.
|
|
Spelling fixes ("then", "occured") reported by Lauri Nurmi.
|
|
Added more error reporting in png_default_read_data().
|
|
Merged png_free_data() with libpng-1.6.17rc02.
|
|
|
|
Version 1.7.0beta56 [March 11, 2015]
|
|
Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF
|
|
for consistency, and remove some useless tests (Alexey Petruchik).
|
|
|
|
Version 1.7.0beta57 [March 16, 2015]
|
|
Remove pnglibconf.h, pnglibconf.c, and pnglibconf.out instead of
|
|
pnglibconf.* in "make clean" (Cosmin).
|
|
Fix bug in calculation of maxbits, in png_write_sBIT, introduced
|
|
in libpng-1.6.17beta01 (John Bowler).
|
|
Revert change to png_default_read_data() made in libpng-1.7.0beta55.
|
|
|
|
Version 1.7.0beta58 [March 25, 2015]
|
|
Implemented affirm() support and usage.
|
|
Remove pnglibconf.dfn and pnglibconf.pre with "make clean".
|
|
Added byte, short and other overflow checking
|
|
Added 'affirm' based overflow checking for debug builds for char
|
|
and short assignments. Simply ignore the error in release builds
|
|
(a truncated value will be used without warning). Controlled by
|
|
PNG_RANGE_CHECK_SUPPORTED.
|
|
Improved some overflow handling. 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. Overflows previously
|
|
handled by png_warning in png.c have been changed to use new
|
|
macros/affirm functions so that beta builds will abort on overflow and
|
|
release builds will quietly ignore it. This avoids release builds
|
|
producing warnings that are of no use to end users.
|
|
Check (png_uint_16) casts for overflow. Also removed png_muldiv_warn,
|
|
added RELEASE/!RELEASE convenience macros. png_muldiv_warn was used in
|
|
only one place, and the overflow condition is a genuine warning not
|
|
an internal error. Four macros allow code or function parameters to be
|
|
condition on RELEASE (or not) builds and tidy up the #ifdef handling of
|
|
functions.
|
|
|
|
Version 1.7.0beta59 [April 19, 2015]
|
|
Transformed rewrite: changed row_info, added checks. This introduces an
|
|
internal struct (png_transform_control) to replace row_info and uses
|
|
that to implement affirms correctly. The change also adds checks on
|
|
the rowbytes calculation and additional checks on most transform
|
|
implementations.
|
|
Added png_uint_16 range checking, pngvalid tRNS, fixed png_uint_16:
|
|
review of previous checks, removal of some where SAFE. pngvalid: add
|
|
testing of tRNS for better code coverage pngvalid: correct rgb-to-gray
|
|
error calculations. Code coverage is still incomplete: see /*UNTESTED*/
|
|
in pngrtran.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]).
|
|
Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler
|
|
(Bug report by Viktor Szaka'ts).
|
|
|
|
Version 1.7.0beta60 [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.
|
|
|
|
Version 1.7.0beta61 [May 31, 2015]
|
|
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).
|
|
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 1.7.0beta62 [June 1, 2015]
|
|
Removed the experimental 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.
|
|
|
|
Version 1.7.0beta63 [June 6, 2015]
|
|
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.
|
|
Fixed cexcept.h in which GCC 5 reported that one of the auto
|
|
variables in the Try macro needs to be volatile to prevent value
|
|
being lost over the setjmp, and fixed g++ build breaks (John Bowler).
|
|
Moved READ_GAMMA to pngrtran.c. This makes everything in pngrtrans.c
|
|
depend on READ_TRANSFORMS and moves all the transform gamma (READ_GAMMA)
|
|
code from elsewhere to png_tran.c. There are no code changes.
|
|
There is one remaining use of the gamma (16-bit) code in the simplified
|
|
API in pngread.c but that is because of a long-standing libpng bug,
|
|
namely that the gamma corrected palette is no produced by
|
|
png_read_update_info (John Bowler).
|
|
Completed AArch64 support. The previous change to recognize __ARM_NEON
|
|
didn't touch all the required preprocessor lines. This change removes
|
|
support for __ARM_NEON__ completely and makes this consistent.
|
|
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 1.7.0beta64 [July 26, 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).
|
|
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
|
|
Rearranged png.h to put the major sections in the same order as
|
|
in libpng16.
|
|
Belatedly added Mans Rullgard and James Yu to the list of Contributing
|
|
Authors.
|
|
|
|
Version 1.7.0beta65 [September 16, 2015]
|
|
Use nanosleep() instead of usleep() in contrib/gregbook/rpng2-x.c
|
|
because usleep() is deprecated (port from libpng16).
|
|
Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
|
|
Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
|
|
Moved config.h.in~ from the "libpng_autotools_files" list to the
|
|
"libpng_autotools_extra" list in autogen.sh because it was causing a
|
|
false positive for missing files (bug report by Robert C. Seacord).
|
|
Fixed some bad links in the man page.
|
|
Renamed the arm subdirectory to contrib/neon.
|
|
Made minor fixes to the test scripts:
|
|
pngimage: add --list-combos pngunknown: add --strict to catch warnings
|
|
pngvalid-standard: remove the spurious --progressive read (compare with
|
|
pngvalid-progressive-standard!) (John Bowler).
|
|
Implemented a new chunk parse implementation that can be shared. It
|
|
is currently shared by the progressive reader and the sequential one
|
|
(but not yet by the writer) (John Bowler).
|
|
Implemented shared transform handling that is used throughout (John Bowler).
|
|
|
|
Version 1.7.0beta66 [October 2, 2015]
|
|
Enabled the low-bit-depth gray tests that were disabled in prior versions
|
|
of libpng because of problems that should have been fixed by the recent
|
|
changes to libpng17. Enabling the tests revealed bugs in those changes
|
|
which are now corrected.
|
|
Replaced the memcpy of png_transform_background with a structure copy
|
|
which is safer since it doesn't depend on knowing the first member to
|
|
be copied, also the copies are improved to copy the transform args too;
|
|
not required at present but it may prevent a bug being introduced in
|
|
the future.
|
|
Fixed some new Coverity defects that were introduced in 1.7.0beta65.
|
|
Fixed makepng.c so that it compiles with GCC 5.1.0.
|
|
Added contrib/testspngs/: a directory for additional test png files
|
|
generated by makepng.
|
|
Fixed dead code reported by Coverity (John Bowler).
|
|
Limit the calls to crc32 to ZLIB_IO_MAX, although it is not clear that
|
|
this is optimal (John Bowler).
|
|
Make pngstest error limits version specific. Splitting the machine
|
|
generated error structs out to a file allows the values to be updated
|
|
without changing pngstest.c itself. Since libpng 1.6 and 1.7 have
|
|
slightly different error limits this simplifies maintenance. The
|
|
makepngs.sh script has also been updated to more accurately reflect
|
|
current problems in libpng 1.7 (John Bowler).
|
|
Fixed gamma-handling issues. One serious bug is that 8 was forced
|
|
as a bit depth when caching a palette, even though the palette had been
|
|
expanded. One less serious bug, the optimization for avoiding gamma
|
|
correction introduced significant errors if the app subsequently
|
|
did further corrections, only shown by using files with gAMA 1/1.52 in
|
|
pngstest (John Bowler).
|
|
Suppressed bogus Coverity issues in pngrutil.c and pngwutil.c.
|
|
Corrected sRGB gamma handling in the Simplified API (John Bowler).
|
|
If a gamma encoded file that has a gamma not matching that of sRGB is
|
|
passed to the simplified API the previous code simply interpreted it as
|
|
a power law encoding. However old Mac files had a power law correction
|
|
of 1.45 built in to the encoding, even though the display devices were
|
|
consistent with sRGB. Assuming a power law encoding results in
|
|
substantial differences in the interpretation of low 8-bit values;
|
|
below 10. For example an Apple '5' which is equivalent to an sRGB '17'
|
|
ends up as the value '8'. This patch provides some measure of correction
|
|
for this by making the gamma correction done within the simplified API
|
|
assume that any encoded data is encoded relative to an sRGB-like transfer
|
|
function; the data is corrected back to the PNG-nominal 2.2 value then
|
|
decoded to linear (if required) using the sRGB transfer function.
|
|
This reduces the errors reported by pngstest for such files (colormapped
|
|
ones) but still leaves the issue with files where the standard libpng
|
|
code does the gamma decoding. To cope with the latter cases there is a
|
|
new pngstest-errors which allows the result; however, this is still a
|
|
work-in-progress; a better solution is possible.
|
|
Added a '--small' option to 'makepng' to allow the generation of smaller
|
|
images that also give better test case coverage. Also added copyright
|
|
and licence to the generated images, reflecting the fact that they are
|
|
original works of the author of the code. The licence used is the
|
|
Creative Commons Public Domain (CC0-1.0) one, which is appropriate
|
|
for non-source-code works. The resultant images were used to generate
|
|
the recently-updated pngstest-errors.h file (John Bowler).
|
|
Added test files generated by "contrib/testpngs/makepngs.sh --small"
|
|
with MAKEPNG set to the makepng compiled from the current
|
|
contrib/libtests/makepngs.sh, to the "contrib/testpngs" directory.
|
|
Made png_rgb_to_gray() optimization fixes. This fixes the code
|
|
that optimizes RGB to Gray transformations that only selected on
|
|
channel and clarifies the handling of max_depth in the transform
|
|
code (John Bowler).
|
|
Incorporated new test PNG files into make check. tests/pngstest-*
|
|
are changed so that the new test files are divided into 8 groups by
|
|
gamma and alpha channel. These tests have considerably better code
|
|
and pixel-value coverage than contrib/pngsuite; however,coverage is
|
|
still incomplete (John Bowler).
|
|
Fixed png_set_tRNS_to_alpha for low-bit-depth gray and enabled
|
|
low-bit-depth gray tests in pngvalid (John Bowler).
|
|
Fixed sBIT handling in the low-bit-depth gray and pngstest cases,
|
|
extended sBIT handling to the colormap code in the simplified API
|
|
which is separately implemented in pngread.c (John Bowler).
|
|
|
|
Version 1.7.0beta67 [November 3, 2015]
|
|
Fixed 'pow' macros in pngvalid.c. It is legal for 'pow' to be a
|
|
macro, therefore the argument list cannot contain preprocessing
|
|
directives. Make sure pow is a function where this happens. This is
|
|
a minimal safe fix, the issue only arises in non-performance-critical
|
|
code (bug report by Curtis Leach, fix by John Bowler).
|
|
Added sPLT chunk support to pngtest.c
|
|
Prevent setting or writing over-length PLTE chunk (Cosmin Truta).
|
|
Silently truncate over-length PLTE chunk while reading.
|
|
Fixed some inconsequential cut-and-paste typos in png_set_cHRM_XYZ_fixed().
|
|
Clarified COPYRIGHT information to state explicitly that versions
|
|
are derived from previous versions.
|
|
Removed much of the long list of previous versions from png.h and
|
|
libpng.3.
|
|
|
|
Version 1.7.0beta68 [November 12, 2015]
|
|
Fixed new bug with CRC error after reading an over-length palette
|
|
(bug report by Cosmin Truta) (CVE-2015-8126).
|
|
Cleaned up coding style in png_handle_PLTE().
|
|
|
|
Version 1.7.0beta69 [November 24, 2015]
|
|
Avoid potential pointer overflow/underflow in png_handle_sPLT() and
|
|
png_handle_pCAL() (Bug report by John Regehr).
|
|
Avoid conditionally compiling parts of statements in png.c (suggested
|
|
by flaviommedeiros).
|
|
Fixed incorrect implementation of png_set_PLTE() that uses png_ptr
|
|
not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126
|
|
vulnerability.
|
|
Added pngvalid --transform --interlace test. This increases code
|
|
coverage by generating test cases with smaller length rows as a
|
|
result of the interlacing. Without this packswap handling was
|
|
incompletely tested.
|
|
Fixed NO_WRITE_INTERLACE in pngvalid.c. The support for writing
|
|
interlaced images directly from libpng 1.7 was unintentionally
|
|
disabled (INTERLACE_LAST was defined incorrectly, excluding the
|
|
interlaced images). This obscured the fact that the transform and
|
|
error test case generators lacked the support for writing interlaced
|
|
images from libpng.
|
|
Transform rewrite: perform transforms in small chunks. The intent
|
|
of this change is to reduce the memory footprint during transform
|
|
sequences by performing transforms in fixed (small) sized blocks of
|
|
pixels. The change is incomplete; the filter code still works
|
|
row-by-row, so the whole tranform also works row-by-row. The intent
|
|
is to fix this so that everything works in small(ish) chunks.
|
|
At present the change has no discernable effect on pngvalid --speed
|
|
or pngstest with (e.g.) rgb-8-1.8.png; user time and (minor) page
|
|
faults are the same in old and new versions. The same applies to
|
|
real-world 15MP PNG images; even on these the presence of the filter
|
|
code causes a cyclical progress through memory which will interfere
|
|
with any caching otherwise possible (useful word, 'otherwise'.)
|
|
Read row buffer changes. The read code now allocates one row buffer
|
|
of the size of the input PNG row and, only if required, one buffer of
|
|
the size of the output. The output buffer is required for the
|
|
progressive reader (always) and for the sequential reader if libpng
|
|
is de-interlacing an image (because the output row is used multiple
|
|
times if png_read_row is called with a display row parameter.) This
|
|
should reduce memory utilization by libpng significantly, but it has no
|
|
detectable effect on overall performance figures of the test programs;
|
|
these are probably dominated by memory allocations for the whole image
|
|
within the test programs.
|
|
Now that the code works consistently so that these just switch off
|
|
the support for having libpng do the interlace/deinterlace, the old
|
|
names make more sense. Restoring them avoids cruft in the configuration
|
|
file and avoids an unnecessary version specific change.
|
|
The reliance of png_read_png on interlace handling and some minor
|
|
issues in the test programs where they failed to correctly check for
|
|
interlace handling were exposed by the ability to write interlaced
|
|
images even if WRITE_INTERLACING is turned off. This is fixed here.
|
|
Changed the detection of invalid application behavior (too many
|
|
calls to png_read_row) from an affirm to a png_app_error.
|
|
Fixed the PNG_MAX_GAMMA_8 handling and png_set_rgb_to_gray, which
|
|
had bugs which were likely to expose end cases of rgb-to-gray conversion
|
|
errors. This might possibly explain some of the machine math dependencies
|
|
we are seeing.
|
|
Temporarily disabled filter selection while writing, and temporarily
|
|
replaced pngtest.png accordingly.
|
|
|
|
Version 1.7.0beta70 [December 3, 2015]
|
|
Fixed a simple bracket problem that prevented reading non-interlaced
|
|
PNG files with height == 1.
|
|
The code failed to zero out the row buffer at the start of a pass where
|
|
the AVG filter is used because 'row_number' is not always zero (on
|
|
interlaced images) and, apparently, the assertion that the buffer had
|
|
been zeroed when allocated was not always correct for non-interlaced
|
|
images. Revealed by pngvalid --size with a hack to make it always
|
|
use AVG.
|
|
Fixed an error in handling of bad zlib CMINFO field in pngfix, found by
|
|
American Fuzzy Lop, reported by Brian Carpenter. inflate() doesn't
|
|
immediately fault a bad CMINFO field; instead a 'too far back' error
|
|
happens later (at least some times). pngfix failed to limit CMINFO to
|
|
the allowed values but then assumed that window_bits was in range,
|
|
triggering an assert. The bug is mostly harmless; the PNG file cannot
|
|
be fixed.
|
|
Test the 'size' images in the sequential reader. The existing test
|
|
case only uses the progressive reader which means that important parts of
|
|
the filter code never got tested.
|
|
Improved pngvalid coverage of filter combinations, remove the (new in 1.7)
|
|
code which disabled previous-row filters on the first row of an image in
|
|
some cases.
|
|
Removed all trailing spaces from source files in contrib
|
|
Moved code round and changed the filter write interfaces that took
|
|
png_uint_32 buffer pixel counts to unsigned int. Also moved compression
|
|
code and definitions into pngwutil.c so that the compression code is
|
|
isolated from other definitions.
|
|
Unified the compression code so that inflate calls are localized to a common
|
|
routine. Ground work for filter selection support. Minor API changes to
|
|
use void* not byte* for data parameters. Unification of some of the
|
|
compression code with the decompression code; IDAT_size replaces
|
|
IDAT_read_size and zbuffer_size, IDAT reading and writing is no longer
|
|
controlled by the size of the compression buffer.
|
|
Separated png_compress_IDAT into write/compress, removed some
|
|
trailing spaces and cleaned up pnglibconf.
|
|
Removed the side-effect on the png_struct palette of calling png_set_PLTE()
|
|
or png_set_tRNS(). This is a quiet API change; it was previously possible
|
|
to alter the palette on a PNG image by using png_set_PLTE, but this was
|
|
unintended and inconsistent with the other png_set APIs. This fixes
|
|
CVE-2015-8472.
|
|
Fixed a bug in palette index checking; png_struct::num_palette could, in
|
|
principle, get changed by the transformations (e.g. png_set_quantize)
|
|
and this would invalidate the check. The palette checking init function
|
|
now makes a copy of png_struct::num_palette.
|
|
Fixed a bug in pngvalid error handling. A png_error in png_write_info is
|
|
not continuable (a valid image cannot necessarily be written afterward)
|
|
because the png_error aborts the write of subsequent pre-IDAT chunks.
|
|
In particular an abort as a result of a bogus colorspace information
|
|
(gAMA, cHRM, sBIT etc) prevents the write of the PLTE chunk.
|
|
|
|
Version 1.7.0beta71 [omitted]
|
|
Version 1.7.0beta72 [December 7, 2015]
|
|
Implemented new filter selection heuristic.
|
|
Attempted to make the selection options more intuitive.
|
|
Fixed a build break in no-write-filters cases.
|
|
Re-applied some recent patches to libpng-1.7.0beta70 that were
|
|
accidentally lost while publishing the beta70 tar distribution.
|
|
Fixed g++ builds, where enums (int), G++ objects (int) and (unsigned)
|
|
were being used together in ?:
|
|
Fixed stack smashing problem in write png_copy_row that was introduced
|
|
in libpng-1.7.0beta70. This also resulted in PNG data with random
|
|
row bytes.
|
|
|
|
Version 1.7.0beta73 [December 11, 2015]
|
|
Fixed syntax "$(command)" in tests/pngstest that some shells other than
|
|
bash could not parse (Bug report by Nelson Beebe). Use `command` instead.
|
|
Combined some redundant checks on info_ptr==NULL in png_handle_PLTE()
|
|
Changed png_struct->options from png_byte to png_uint_32, to hold
|
|
up to 16 2-bit options.
|
|
|
|
Version 1.7.0beta74 [December 19, 2015]
|
|
Fixed copyright years in source files.
|
|
Removed LE/BE dependencies in pngvalid, to 'fix' the current problem
|
|
in the BigEndian tests by not testing it, making the BE code the same
|
|
as the LE version.
|
|
Fixes to pngvalid for various reduced build configurations (eliminate unused
|
|
statics) and a fix for the case in rgb_to_gray when the digitize option
|
|
reduces graylo to 0, producing a large error.
|
|
Widened the 'limit' check on the internally calculated error limits in
|
|
the 'DIGITIZE' case (the code used prior to 1.7 for rgb_to_gray error
|
|
checks) and changed the check to only operate in non-release builds
|
|
(base build type not RC or RELEASE.)
|
|
Fixed undefined behavior in pngvalid.c, undefined because
|
|
(png_byte) << shift is undefined if it changes the signed bit
|
|
(because png_byte is promoted to int). The libpng exported functions
|
|
png_get_uint_32 and png_get_uint_16 handle this. (Bug reported by
|
|
David Drysdale as a result of reports from UBSAN in clang 3.8).
|
|
Changed pngvalid to use BE random numbers; this used to produce
|
|
errors but these should not be fixed as a result of the previous changes.
|
|
Implemented a prototype of filter selection. This rewrites the code
|
|
used previously in the heuristics to make it easier to debug and
|
|
introduces the 'methodical' method, which is intended to be an
|
|
expensive but reliable way of reducing image size. The code in this
|
|
commit does not work; the 'methodical' test for success does not take
|
|
account of data buffered inside zlib and, anyway, it changes the
|
|
results of pngtest so that the test fails. This is just a checkpoint
|
|
of the current state
|
|
Disabled 'methodical' filter selection code. It is incomplete; it works
|
|
but does not do anything useful except, maybe, on really enormous images.
|
|
Added .travis.yml configuration file to control Travis continuous
|
|
integration testing (David Drysdale).
|
|
|
|
Version 1.7.0beta75 [December 21, 2015]
|
|
Fixed duplicate tIME chunk from png_write_png.
|
|
Added an example program, pngcp.c, that illustrates the problem when
|
|
used to copy pngtest.png (the result is an invalid PNG because the
|
|
tIME chunk is duplicated.)
|
|
Re-enabled 'methodical' filter selection code.
|
|
Added an accurate 'methodical' measure.
|
|
Fixed incorrect references to 'pngimage' in pngcp.
|
|
Fixed incorrect debug macro in release builds.
|
|
Reversed the order of tests in png_zlib_compress_validate(().
|
|
Undefined behaviour sanitizer currently fires for this test
|
|
with an error about member access within null pointer to
|
|
struct; put the check that relies on pz->list being non-NULL
|
|
second (David Drysdale).
|
|
|
|
Version 1.7.0beta76 [December 30, 2015]
|
|
Corrected the options handling. Setting the new, higher, option
|
|
bits triggered the byte check (which is no longer necessary).
|
|
Added NULL pz->list test to png_zlib_compress_validate(). This seems
|
|
safer; in fact, a NULL dereference never happens because the test
|
|
ends up just doing arithmetic on NULL but it seems possible that the
|
|
undefined arithmetic can still happen if there is a bug elsewhere.
|
|
Added code to pngcp.c to iterate through the command line options when
|
|
non-list options have the 'all' parameter. This is used to rapidly
|
|
test the effect of different zlib options.
|
|
Revised the handling of tIME and text chunks on read to record the
|
|
location of the chunks relative to PLTE and IDAT. Behavior on write
|
|
is unchanged except that if the position was recorded on read it will
|
|
be re-used. This involves an ABI change to the png_text_struct; a
|
|
one byte location field is added (with the same meaning as the one
|
|
used to record unknown chunk location.) Because this field is only
|
|
used on read there is no API change unless a png_info from a libpng
|
|
read is passed to a subsequent libpng write (this did not work very
|
|
well before 1.7; the tIME chunk could get duplicated.) The new field
|
|
is ignored by png_set_text(), resetting it to the current position
|
|
in the read or write stream. On write the position is set to the
|
|
next location to be written unless the write has not started (the
|
|
position is before the signature) in which case the location is set
|
|
to PNG_HAVE_PLTE|PNG_AFTER_IDAT. When the chunk is written the
|
|
position is set to the actual write location (effectively the position
|
|
is frozen.)
|
|
|
|
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
|
|
(subscription required; visit
|
|
https://lists.sourceforge.net/lists/listinfo/png-mng-implement
|
|
to subscribe)
|
|
or to glennrp at users.sourceforge.net
|
|
|
|
Glenn R-P
|
|
#endif
|