| CHANGES - changes for libpng |
| |
| version 0.1 [March 29, 1995] |
| initial work-in-progress release |
| |
| version 0.2 [April 1, 1995] |
| added reader into png.h |
| fixed small problems in stub file |
| |
| version 0.3 [April 8, 1995] |
| added pull reader |
| split up pngwrite.c to several files |
| added pnglib.txt |
| added example.c |
| cleaned up writer, adding a few new transformations |
| fixed some bugs in writer |
| interfaced with zlib 0.5 |
| added K&R support |
| added check for 64 KB blocks for 16 bit machines |
| |
| version 0.4 [April 26, 1995] |
| cleaned up code and commented code |
| simplified time handling into png_time |
| created png_color_16 and png_color_8 to handle color needs |
| cleaned up color type defines |
| fixed various bugs |
| made various names more consistent |
| interfaced with zlib 0.71 |
| cleaned up zTXt reader and writer (using zlib's Reset functions) |
| split transformations into pngrtran.c and pngwtran.c |
| |
| version 0.5 [April 30, 1995] |
| interfaced with zlib 0.8 |
| fixed many reading and writing bugs |
| saved using 3 spaces instead of tabs |
| |
| version 0.6 [May 1, 1995] |
| first beta release |
| added png_large_malloc() and png_large_free() |
| added png_size_t |
| cleaned up some compiler warnings |
| added png_start_read_image() |
| |
| version 0.7 [June 24, 1995] |
| cleaned up lots of bugs |
| finished dithering and other stuff |
| added test program |
| changed name from pnglib to libpng |
| |
| version 0.71 [June 26, 1995] |
| changed pngtest.png for zlib 0.93 |
| fixed error in libpng.txt and example.c |
| |
| version 0.8 [August 20, 1995] |
| cleaned up some bugs |
| added png_set_filler() |
| split up pngstub.c into pngmem.c, pngio.c, and pngerror.c |
| added #define's to remove unwanted code |
| moved png_info_init() to png.c |
| added old_size into png_realloc() |
| added functions to manually set filtering and compression info |
| changed compression parameters based on image type |
| optimized filter selection code |
| added version info |
| changed external functions passing floats to doubles (k&r problems?) |
| put all the configurable stuff in pngconf.h |
| enabled png_set_shift to work with paletted images on read |
| added png_read_update_info() - updates info structure with transformations |
| |
| Version 0.81 [August, 1995] |
| incorporated Tim Wegner's medium model code (thanks, Tim) |
| |
| Version 0.82 [September, 1995] |
| [unspecified changes] |
| |
| Version 0.85 [December, 1995] |
| added more medium model code (almost everything's a far) |
| added i/o, error, and memory callback functions |
| fixed some bugs (16-bit, 4-bit interlaced, etc.) |
| added first run progressive reader (barely tested) |
| |
| Version 0.86 [January, 1996] |
| fixed bugs |
| improved documentation |
| |
| Version 0.87 [January, 1996] |
| fixed medium model bugs |
| fixed other bugs introduced in 0.85 and 0.86 |
| added some minor documentation |
| |
| Version 0.88 [January, 1996] |
| fixed progressive bugs |
| replaced tabs with spaces |
| cleaned up documentation |
| added callbacks for read/write and warning/error functions |
| |
| Version 0.89 [June 5, 1996] |
| Added new initialization API to make libpng work better with shared libs |
| we now have png_create_read_struct(), png_create_write_struct(), |
| png_create_info_struct(), png_destroy_read_struct(), and |
| png_destroy_write_struct() instead of the separate calls to |
| malloc and png_read_init(), png_info_init(), and png_write_init() |
| Changed warning/error callback functions to fix bug - this means you |
| should use the new initialization API if you were using the old |
| png_set_message_fn() calls, and that the old API no longer exists |
| so that people are aware that they need to change their code |
| Changed filter selection API to allow selection of multiple filters |
| since it didn't work in previous versions of libpng anyways |
| Optimized filter selection code |
| Fixed png_set_background() to allow using an arbitrary RGB color for |
| paletted images |
| Fixed gamma and background correction for paletted images, so |
| png_correct_palette is not needed unless you are correcting an |
| external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED |
| in pngconf.h) - if nobody uses this, it may disappear in the future. |
| Fixed bug with Borland 64K memory allocation (Alexander Lehmann) |
| Fixed bug in interlace handling (Smarasderagd, I think) |
| Added more error checking for writing and image to reduce invalid files |
| Separated read and write functions so that they won't both be linked |
| into a binary when only reading or writing functionality is used |
| New pngtest image also has interlacing and zTXt |
| Updated documentation to reflect new API |
| |
| Version 0.89c [June 17, 1996] |
| Bug fixes. |
| |
| Version 0.90 [January, 1997] |
| Made CRC errors/warnings on critical and ancillary chunks configurable |
| libpng will use the zlib CRC routines by (compile-time) default |
| Changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner) |
| Added external C++ wrapper statements to png.h (Gilles Dauphin) |
| Allow PNG file to be read when some or all of file signature has already |
| been read from the beginning of the stream. ****This affects the size |
| of info_struct and invalidates all programs that use a shared libpng**** |
| Fixed png_filler() declarations |
| Fixed? background color conversions |
| Fixed order of error function pointers to match documentation |
| Current chunk name is now available in png_struct to reduce the number |
| of nearly identical error messages (will simplify multi-lingual |
| support when available) |
| Try to get ready for unknown-chunk callback functions: |
| - previously read critical chunks are flagged, so the chunk handling |
| routines can determine if the chunk is in the right place |
| - all chunk handling routines have the same prototypes, so we will |
| be able to handle all chunks via a callback mechanism |
| Try to fix Linux "setjmp" buffer size problems |
| Removed png_large_malloc, png_large_free, and png_realloc functions. |
| |
| Version 0.95 [March, 1997] |
| Fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never |
| Fixed bug in PNG file signature compares when start != 0 |
| Changed parameter type of png_set_filler(...filler...) from png_byte |
| to png_uint_32 |
| Added test for MACOS to ensure that both math.h and fp.h are not #included |
| Added macros for libpng to be compiled as a Windows DLL (Andreas Kupries) |
| Added "packswap" transformation, which changes the endianness of |
| packed-pixel bytes (Kevin Bracey) |
| Added "strip_alpha" transformation, which removes the alpha channel of |
| input images without using it (not necessarily a good idea) |
| Added "swap_alpha" transformation, which puts the alpha channel in front |
| of the color bytes instead of after |
| Removed all implicit variable tests which assume NULL == 0 (I think) |
| Changed several variables to "png_size_t" to show 16/32-bit limitations |
| Added new pCAL chunk read/write support |
| Added experimental filter selection weighting (Greg Roelofs) |
| Removed old png_set_rgbx() and png_set_xrgb() functions that have been |
| obsolete for about 2 years now (use png_set_filler() instead) |
| Added macros to read 16- and 32-bit ints directly from buffer, to be |
| used only on those systems that support it (namely PowerPC and 680x0) |
| With some testing, this may become the default for MACOS/PPC systems. |
| Only calculate CRC on data if we are going to use it |
| Added macros for zTXt compression type PNG_zTXt_COMPRESSION_??? |
| Added macros for simple libpng debugging output selectable at compile time |
| Removed PNG_READ_END_MODE in progressive reader (Smarasderagd) |
| More description of info_struct in libpng.txt and png.h |
| More instructions in example.c |
| More chunk types tested in pngtest.c |
| Renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be |
| png_set_<chunk>. We now have corresponding png_get_<chunk> |
| functions in pngget.c to get information in info_ptr. This isolates |
| the application from the internal organization of png_info_struct |
| (good for shared library implementations). |
| |
| Version 0.96 [May, 1997] |
| Fixed serious bug with < 8bpp images introduced in 0.95 |
| Fixed 256-color transparency bug (Greg Roelofs) |
| Fixed up documentation (Greg Roelofs, Laszlo Nyul) |
| Fixed "error" in pngconf.h for Linux setjmp() behavior |
| Fixed DOS medium model support (Tim Wegner) |
| Fixed png_check_keyword() for case with error in static string text |
| Added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul) |
| Added typecasts to quiet compiler errors |
| Added more debugging info |
| |
| Version 0.97 [January, 1998] |
| Removed PNG_USE_OWN_CRC capability |
| Relocated png_set_crc_action from pngrutil.c to pngrtran.c |
| Fixed typecasts of "new_key", etc. (Andreas Dilger) |
| Added RFC 1152 [sic] date support |
| Fixed bug in gamma handling of 4-bit grayscale |
| Added 2-bit grayscale gamma handling (Glenn R-P) |
| Added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P) |
| Minor corrections in libpng.txt |
| Added simple sRGB support (Glenn R-P) |
| Easier conditional compiling, e.g., |
| define PNG_READ/WRITE_NOT_FULLY_SUPPORTED; |
| all configurable options can be selected from command line instead |
| of having to edit pngconf.h (Glenn R-P) |
| Fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P) |
| Added more conditions for png_do_background, to avoid changing |
| black pixels to background when a background is supplied and |
| no pixels are transparent |
| Repaired PNG_NO_STDIO behavior |
| Tested NODIV support and made it default behavior (Greg Roelofs) |
| Added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler) |
| Regularized version numbering scheme and bumped shared-library major |
| version number to 2 to avoid problems with libpng 0.89 apps |
| (Greg Roelofs) |
| |
| Version 0.98 [January, 1998] |
| Cleaned up some typos in libpng.txt and in code documentation |
| Fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler) |
| Cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c |
| Changed recommendation about file_gamma for PC images to .51 from .45, |
| in example.c and libpng.txt, added comments to distinguish between |
| screen_gamma, viewing_gamma, and display_gamma. |
| Changed all references to RFC1152 to read RFC1123 and changed the |
| PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED |
| Added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent) |
| Changed srgb_intent from png_byte to int to avoid compiler bugs |
| |
| Version 0.99 [January 30, 1998] |
| Free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler) |
| Fixed a longstanding "packswap" bug in pngtrans.c |
| Fixed some inconsistencies in pngconf.h that prevented compiling with |
| PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined |
| Fixed some typos and made other minor rearrangement of libpng.txt (Andreas) |
| Changed recommendation about file_gamma for PC images to .50 from .51 in |
| example.c and libpng.txt, and changed file_gamma for sRGB images to .45 |
| Added a number of functions to access information from the png structure |
| png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit) |
| Added TARGET_MACOS similar to zlib-1.0.8 |
| Define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined |
| Added type casting to all png_malloc() function calls |
| |
| Version 0.99a [January 31, 1998] |
| Added type casts and parentheses to all returns that return a value.(Tim W.) |
| |
| Version 0.99b [February 4, 1998] |
| Added type cast png_uint_32 on malloc function calls where needed. |
| Changed type of num_hist from png_uint_32 to int (same as num_palette). |
| Added checks for rowbytes overflow, in case png_size_t is less than 32 bits. |
| Renamed makefile.elf to makefile.lnx. |
| |
| Version 0.99c [February 7, 1998] |
| More type casting. Removed erroneous overflow test in pngmem.c. |
| Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes. |
| Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5. |
| |
| Version 0.99d [February 11, 1998] |
| Renamed "far_to_near()" "png_far_to_near()" |
| Revised libpng.3 |
| Version 99c "buffered" operations didn't work as intended. Replaced them |
| with png_memcpy_check() and png_memset_check(). |
| Added many "if (png_ptr == NULL) return" to quell compiler warnings about |
| unused png_ptr, mostly in pngget.c and pngset.c. |
| Check for overlength tRNS chunk present when indexed-color PLTE is read. |
| Cleaned up spelling errors in libpng.3/libpng.txt |
| Corrected a problem with png_get_tRNS() which returned undefined trans array |
| |
| Version 0.99e [February 28, 1998] |
| Corrected png_get_tRNS() again. |
| Add parentheses for easier reading of pngget.c, fixed "||" should be "&&". |
| Touched up example.c to make more of it compileable, although the entire |
| file still can't be compiled (Willem van Schaik) |
| Fixed a bug in png_do_shift() (Bryan Tsai) |
| Added a space in png.h prototype for png_write_chunk_start() |
| Replaced pngtest.png with one created with zlib 1.1.1 |
| Changed pngtest to report PASS even when file size is different (Jean-loup G.) |
| Corrected some logic errors in png_do_invert_alpha() (Chris Patterson) |
| |
| Version 0.99f [March 5, 1998] |
| Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey) |
| Moved makefiles into a "scripts" directory, and added INSTALL instruction file |
| Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok) |
| Added pointers to "note on libpng versions" in makefile.lnx and README |
| Added row callback feature when reading and writing nonprogressive rows |
| and added a test of this feature in pngtest.c |
| Added user transform callbacks, with test of the feature in pngtest.c |
| |
| Version 0.99g [March 6, 1998, morning] |
| Minor changes to pngtest.c to suppress compiler warnings. |
| Removed "beta" language from documentation. |
| |
| Version 0.99h [March 6, 1998, evening] |
| Minor changes to previous minor changes to pngtest.c |
| Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED |
| and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro |
| Added user transform capability |
| |
| Version 1.00 [March 7, 1998] |
| Changed several typedefs in pngrutil.c |
| Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik) |
| Replaced "while(1)" with "for(;;)" |
| Added PNGARG() to prototypes in pngtest.c and removed some prototypes |
| Updated some of the makefiles (Tom Lane) |
| Changed some typedefs (s_start, etc.) in pngrutil.c |
| Fixed dimensions of "short_months" array in pngwrite.c |
| Replaced ansi2knr.c with the one from jpeg-v6 |
| |
| Version 1.0.0 [March 8, 1998] |
| Changed name from 1.00 to 1.0.0 (Adam Costello) |
| Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert) |
| |
| Version 1.0.0a [March 9, 1998] |
| Fixed three bugs in pngrtran.c to make gamma+background handling consistent |
| (Greg Roelofs) |
| Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz |
| for major, minor, and bugfix releases. This is 10001. (Adam Costello, |
| Tom Lane) |
| Make months range from 1-12 in png_convert_to_rfc1123 |
| |
| Version 1.0.0b [March 13, 1998] |
| Quieted compiler complaints about two empty "for" loops in pngrutil.c |
| Minor changes to makefile.s2x |
| Removed #ifdef/#endif around a png_free() in pngread.c |
| |
| Version 1.0.1 [March 14, 1998] |
| Changed makefile.s2x to reduce security risk of using a relative pathname |
| Fixed some typos in the documentation (Greg). |
| Fixed a problem with value of "channels" returned by png_read_update_info() |
| |
| Version 1.0.1a [April 21, 1998] |
| Optimized Paeth calculations by replacing abs() function calls with intrinsics |
| plus other loop optimizations. Improves avg decoding speed by about 20%. |
| Commented out i386istic "align" compiler flags in makefile.lnx. |
| Reduced the default warning level in some makefiles, to make them consistent. |
| Removed references to IJG and JPEG in the ansi2knr.c copyright statement. |
| Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation. |
| Added grayscale and 16-bit capability to png_do_read_filler(). |
| Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes |
| too large when writing an image with bit_depth < 8 (Bob Dellaca). |
| Corrected some bugs in the experimental weighted filtering heuristics. |
| Moved a misplaced pngrutil code block that truncates tRNS if it has more |
| than num_palette entries -- test was done before num_palette was defined. |
| Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins). |
| Changed compiler flags in makefile.wat for better optimization |
| (Pawel Mrochen). |
| |
| Version 1.0.1b [May 2, 1998] |
| Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg). |
| Relocated the png_composite macros from pngrtran.c to png.h (Greg). |
| Added makefile.sco (contributed by Mike Hopkirk). |
| Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a. |
| Fixed a bug in pngrtran.c that would set channels=5 under some circumstances. |
| More work on the Paeth-filtering, achieving imperceptible speedup |
| (A Kleinert). |
| More work on loop optimization which may help when compiled with C++ |
| compilers. |
| Added warnings when people try to use transforms they've defined out. |
| Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran. |
| Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg) |
| |
| Version 1.0.1c [May 11, 1998] |
| Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for |
| filler bytes should have been 0xff instead of 0xf. |
| Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images. |
| Moved PNG_WRITE_WEIGHTED_FILTER_SUPPORTED and PNG_WRITE_FLUSH_SUPPORTED |
| out of the PNG_WRITE_TRANSFORMS_NOT_SUPPORTED block of pngconf.h |
| Added "PNG_NO_WRITE_TRANSFORMS" etc., as alternatives for *_NOT_SUPPORTED, |
| for consistency, in pngconf.h |
| Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier |
| to remove unwanted capabilities via the compile line |
| Made some corrections to grammar (which, it's) in documentation (Greg). |
| Corrected example.c, use of row_pointers in png_write_image(). |
| |
| Version 1.0.1d [May 24, 1998] |
| Corrected several statements that used side effects illegally in pngrutil.c |
| and pngtrans.c, that were introduced in version 1.0.1b |
| Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert) |
| More corrections to example.c, use of row_pointers in png_write_image() |
| and png_read_rows(). |
| Added pngdll.mak and pngdef.pas to scripts directory, contributed by |
| Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5 |
| Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.) |
| Changed several loops from count-down to count-up, for consistency. |
| |
| Version 1.0.1e [June 6, 1998] |
| Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and |
| added warnings when people try to set png_read_fn and png_write_fn in |
| the same structure. |
| Added a test such that png_do_gamma will be done when num_trans==0 |
| for truecolor images that have defined a background. This corrects an |
| error that was introduced in libpng-0.90 that can cause gamma processing |
| to be skipped. |
| Added tests in png.h to include "trans" and "trans_values" in structures |
| when PNG_READ_BACKGROUND_SUPPORTED or PNG_READ_EXPAND_SUPPORTED is defined. |
| Add png_free(png_ptr->time_buffer) in png_destroy_read_struct() |
| Moved png_convert_to_rfc_1123() from pngwrite.c to png.c |
| Added capability for user-provided malloc_fn() and free_fn() functions, |
| and revised pngtest.c to demonstrate their use, replacing the |
| PNGTEST_DEBUG_MEM feature. |
| Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner). |
| |
| 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 sequence-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 palette. |
| |
| 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() occurring 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] |
| Reformatted sources in libpng style (3-space indentation, 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 definable 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 pedantic 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 configurable. |
| 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 uninitialized 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 concatenation |
| 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 desirable 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 png_set_tIME() 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 and in the libpng15 and |
| earlier GIT branches). |
| 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 versions 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 command-line |
| 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 ancillary 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 unnecessary 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 desirable 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 15, 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(). |
| Rearranged the ARM-NEON optimizations: Isolated the machine specific code |
| to the hardware subdirectory and added comments to pngrutil.c so that |
| implementors of other optimizations know what to do. |
| Fixed cases of unquoted DESTDIR in Makefile.am |
| Rebuilt Makefile.in, etc., with autoconf-2.69 and automake-1.12.5. |
| |
| Version 1.6.0beta34 [December 19, 2012] |
| Cleaned up whitespace in the synopsis portion of the manpage "libpng.3" |
| Disassembled the version number in scripts/options.awk (necessary for |
| building on SunOs). |
| |
| Version 1.6.0beta35 [December 23, 2012] |
| 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 1.6.0beta36 [January 2, 2013] |
| Discontinued distributing libpng-1.x.x.tar.bz2. |
| Discontinued distributing libpng-1.7.0-1.6.0-diff.txt and similar. |
| Rebuilt configure with autoconf-2.69 (inadvertently not done in beta33) |
| Fixed 'make distcheck' on SUN OS - libpng.so was not being removed |
| |
| Version 1.6.0beta37 [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 1.6.0beta39 [January 19, 2013] |
| Again corrected 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 1.6.0beta40 [January 20, 2013] |
| Use consistent handling of overflows in text, sPLT and unknown png_set_* APIs |
| |
| Version 1.6.0rc01 [January 26, 2013] |
| No changes. |
| |
| Version 1.6.0rc02 [February 4, 2013] |
| Added png_get_palette_max() function. |
| |
| Version 1.6.0rc03 [February 5, 2013] |
| Fixed the png_get_palette_max API. |
| |
| Version 1.6.0rc04 [February 7, 2013] |
| Turn serial tests back on (recently turned off by autotools upgrade). |
| |
| Version 1.6.0rc05 [February 8, 2013] |
| Update manual about png_get_palette_max(). |
| |
| Version 1.6.0rc06 [February 9, 2013] |
| 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. |
| |
| Version 1.6.0rc07 [February 10, 2013] |
| 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 1.6.0rc08 [February 10, 2013] |
| Fix typo in png.h #ifdef |
| |
| Version 1.6.0 [February 14, 2013] |
| No changes. |
| |
| Version 1.6.1beta01 [February 16, 2013] |
| Made 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. Back ported from libpng 1.7. |
| Made sRGB check numbers consistent. |
| Ported libpng 1.5 options.awk/dfn file handling to 1.6, fixed one bug. |
| 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. |
| Enabled parallel tests - back ported from libpng-1.7. |
| scripts/pnglibconf.dfa formatting improvements back ported from libpng17. |
| 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). |
| |
| Version 1.6.1beta02 [February 19, 2013] |
| Use parentheses more consistently in "#if defined(MACRO)" tests. |
| Folded long lines. |
| Reenabled code to allow zero length PLTE chunks for MNG. |
| |
| Version 1.6.1beta03 [February 22, 2013] |
| Fixed ALIGNED_MEMORY support. |
| Added 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 1.6.1beta04 [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 1.6.1beta05 [March 1, 2013] |
| Avoid a possible memory leak in contrib/gregbook/readpng.c |
| |
| Version 1.6.1beta06 [March 4, 2013] |
| Better documentation of unknown handling API interactions. |
| Corrected Android builds and corrected libpng.vers with symbol |
| prefixing. It also makes those tests compile and link on Android. |
| Added an API png_set_option() to set optimization options externally, |
| providing an alternative and general solution for the non-portable |
| run-time tests used by the ARM Neon code, using the PNG_ARM_NEON option. |
| 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 1.6.1beta07 [March 7, 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. |
| |
| Version 1.6.1beta08 [March 7, 2013] |
| 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. |
| |
| Version 1.6.1beta09 [March 13, 2013] |
| 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 1.6.1rc01 [March 21, 2013] |
| No changes. |
| |
| Version 1.6.1 [March 28, 2013] |
| No changes. |
| |
| Version 1.6.2beta01 [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). |
| Bug was introduced in libpng-1.6.0. |
| |
| Version 1.6.2rc01 [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 1.6.2rc02 [April 18, 2013] |
| Merge pngtest.c with libpng-1.7.0 |
| |
| Version 1.6.2rc03 [April 22, 2013] |
| Trivial spelling cleanup. |
| |
| Version 1.6.2rc04 and 1.6.2rc05 [omitted] |
| |
| Version 1.6.2rc06 [April 24, 2013] |
| Reverted to version 1.6.2rc03. Recent changes to arm/neon support |
| have been ported to libpng-1.7.0beta09 and will reappear in version |
| 1.6.3beta01. |
| |
| Version 1.6.2 [April 25, 2013] |
| No changes. |
| |
| Version 1.6.3beta01 [April 25, 2013] |
| 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 1.6.3beta02 [April 26, 2013] |
| Test for 'arm*' not just 'arm' in the host_cpu configure variable. |
| Rebuilt the configure scripts. |
| |
| Version 1.6.3beta03 [April 30, 2013] |
| Expanded manual paragraph about writing private chunks, particularly |
| the need to call png_set_keep_unknown_chunks() when writing them. |
| Avoid dereferencing NULL pointer possibly returned from |
| png_create_write_struct() (Andrew Church). |
| |
| Version 1.6.3beta05 [May 9, 2013] |
| 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, via a new PNG_MAXIMUM_INFLATE_WINDOW |
| option for png_set_options(). |
| 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. |
| Fixed gnu issues: g++ needs a static_cast, gcc 4.4.7 has a broken warning |
| message which it is easier to work round than ignore. |
| 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. |
| 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 1.6.3beta06 [May 12, 2013] |
| Allow contrib/pngminus/pnm2png.c to compile without WRITE_INVERT and |
| WRITE_PACK supported (writes error message that it can't read P1 or |
| P4 PBM files). |
| Improved png-fix-too-far-back usage message, added --suffix option. |
| Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the |
| right zlib header files. |
| Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile |
| |
| Version 1.6.3beta07 [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 PNG_STDIO_SUPPORTED/#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 usage. |
| 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 1.6.3beta08 [June 18, 2013] |
| Revised libpng.3 so that "doclifter" can process it. |
| |
| Version 1.6.3beta09 [June 27, 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. |
| |
| Version 1.6.3beta10 [July 5, 2013] |
| Updated documentation to show default behavior of benign errors correctly. |
| Only compile ARM code when PNG_READ_SUPPORTED is defined. |
| Fixed undefined behavior in contrib/tools/pngfix.c and added new strip |
| option. pngfix relied on undefined behavior and even a simple change from |
| gcc to g++ caused it to fail. The new strip option 'unsafe' has been |
| implemented and is the default if --max is given. Option names have |
| been clarified, with --strip=transform now stripping the bKGD chunk, |
| which was stripped previously with --strip=unused. |
| Added all documented chunk types to pngpriv.h |
| Unified pngfix.c source with libpng17. |
| |
| Version 1.6.3rc01 [July 11, 2013] |
| No changes. |
| |
| Version 1.6.3 [July 18, 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. |
| |
| Version 1.6.4beta01 [August 21, 2013] |
| Added information about png_set_options() to the manual. |
| Delay calling png_init_filter_functions() until a row with nonzero filter |
| is found. |
| |
| Version 1.6.4beta02 [August 30, 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 1.6.4rc01 [September 5, 2013] |
| No changes. |
| |
| Version 1.6.4 [September 12, 2013] |
| No changes. |
| |
| Version 1.6.5 [September 14, 2013] |
| Removed two stray lines of code from arm/arm_init.c. |
| |
| Version 1.6.6 [September 16, 2013] |
| Removed two stray lines of code from arm/arm_init.c, again. |
| |
| Version 1.6.7beta01 [September 30, 2013] |
| Revised unknown chunk code to correct several bugs in the NO_SAVE_/NO_WRITE |
| combination |
| Allow HANDLE_AS_UNKNOWN to work when other options are configured off. Also |
| fixed the pngminim makefiles to work when $(MAKEFLAGS) contains stuff |
| which terminates the make options (as by default in recent versions of |
| Gentoo). |
| 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 default behavior of ARM_NEON_API. If the ARM NEON API option was |
| compiled without the CHECK option it defaulted to on, not off. |
| Check user callback behavior in pngunknown.c. Previous versions compiled |
| if SAVE_UNKNOWN was not available but did nothing since the callback |
| was never implemented. |
| Merged pngunknown.c with 1.7 version and back ported 1.7 improvements/fixes |
| |
| Version 1.6.7beta02 [October 12, 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 1.6.7beta03 [October 19, 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. |
| |
| Version 1.6.7beta04 [October 26, 2013] |
| 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 1.6.7rc01 [November 2, 2013] |
| No changes. |
| |
| Version 1.6.7rc02 [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 1.6.7 [November 14, 2013] |
| No changes. |
| |
| Version 1.6.8beta01 [November 24, 2013] |
| 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 1.6.8beta02 [November 30, 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 |
| |
| Version 1.6.8rc01 [December 12, 2013] |
| Tidied up pngfix inits and fixed pngtest no-write builds. |
| |
| Version 1.6.8rc02 [December 14, 2013] |
| 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 are vulnerable. |
| Libpng-1.6.0 and earlier do not have this bug. |
| |
| Version 1.6.8 [December 19, 2013] |
| No changes. |
| |
| Version 1.6.9beta01 [December 26, 2013] |
| 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. |
| Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69 |
| in the tar distributions. |
| |
| Version 1.6.9beta02 [January 1, 2014] |
| Added checks for libpng 1.5 to pngvalid.c. This supports the use of |
| this version of pngvalid in libpng 1.5 |
| Merged with pngvalid.c from libpng-1.7 changes to create a single |
| pngvalid.c |
| Removed #error macro from contrib/tools/pngfix.c (Thomas Klausner). |
| Merged pngrio.c, pngtrans.c, pngwio.c, and pngerror.c with libpng-1.7.0 |
| Merged libpng-1.7.0 changes to make no-interlace configurations work |
| with test programs. |
| Revised 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 1.6.9beta03 [January 10, 2014] |
| Removed potentially misleading warning from png_check_IHDR(). |
| |
| Version 1.6.9beta04 [January 20, 2014] |
| Updated scripts/makefile.* to use CPPFLAGS (Cosmin). |
| Added clang attribute support (Cosmin). |
| |
| Version 1.6.9rc01 [January 28, 2014] |
| No changes. |
| |
| Version 1.6.9rc02 [January 30, 2014] |
| Quiet an uninitialized memory warning from VC2013 in png_get_png(). |
| |
| Version 1.6.9 [February 6, 2014] |
| |
| Version 1.6.10beta01 [February 9, 2014] |
| Backported changes from libpng-1.7.0beta30 and beta31: |
| 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() |
| with two new test scripts. |
| Removed dependence on !PNG_READ_EXPAND_SUPPORTED for calling |
| png_set_packing() in png_read_png(). |
| 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). |
| Make png_read_png() and png_write_png() prototypes in png.h depend |
| upon PNG_READ_SUPPORTED and PNG_WRITE_SUPPORTED. |
| 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 1.6.10beta02 [February 23, 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). |
| 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 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. |
| |
| Version 1.6.10beta03 [February 25, 2014] |
| Moved some documentation from png.h to libpng.3 and libpng-manual.txt |
| Minor editing of contrib/arm-neon/README and contrib/examples/*.c |
| |
| Version 1.6.10rc01 [February 27, 2014] |
| Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS |
| and PNG_USR_CONFIG -> PNG_USER_CONFIG). |
| |
| Version 1.6.10rc02 [February 28, 2014] |
| Removed unreachable return statement after png_chunk_error() |
| in pngrutil.c |
| |
| Version 1.6.10rc03 [March 4, 2014] |
| Un-deprecated png_data_freer(). |
| |
| Version 1.6.10 [March 6, 2014] |
| No changes. |
| |
| Version 1.6.11beta01 [March 17, 2014] |
| 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 1.6.11beta02 [April 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 Truta). |
| $(CP) is now used alongside $(RM_F). Also, use 'copy' instead of 'cp' |
| where applicable, and applied other minor makefile changes (Cosmin). |
| Don't warn about invalid dimensions exceeding user limits (Cosmin). |
| Allow an easy replacement of the default pre-built configuration |
| header with a custom header, via the make PNGLIBCONF_H_PREBUILT |
| macro (Cosmin). |
| |
| Version 1.6.11beta03 [April 6, 2014] |
| 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). |
| Optionally use __builtin_bswap16() in png_do_swap(). |
| |
| Version 1.6.11beta04 [April 19, 2014] |
| Made progressive reading of interlaced images consistent with the |
| behavior of the sequential reader and consistent with the manual, by |
| moving some code out of the PNG_READ_INTERLACING_SUPPORTED blocks. The |
| row_callback now receives the proper pass number and unexpanded rows, when |
| png_combine_row() isn't built or used, and png_set_interlace_handling() |
| is not called. |
| Allow PNG_sRGB_PROFILE_CHECKING = (-1) to mean no sRGB profile checking. |
| |
| Version 1.6.11beta05 [April 26, 2014] |
| Do not reject ICC V2 profiles that lack padding (Kai-Uwe Behrmann). |
| Relocated closing bracket of the sRGB profile test loop to avoid getting |
| "Not recognizing known sRGB profile that has been edited" warning for |
| ICC V2 profiles that lack the MD5 signature in the profile header. |
| |
| Version 1.6.11beta06 [May 19, 2014] |
| Added PNG_SKIP_sRGB_CHECK_PROFILE choice for png_set_option(). |
| |
| Version 1.6.11rc01 [May 27, 2014] |
| No changes. |
| |
| Version 1.6.11rc02 [June 3, 2014] |
| Test ZLIB_VERNUM instead of PNG_ZLIB_VERNUM in contrib/tools/pngfix.c |
| |
| Version 1.6.11 [June 5, 2014] |
| No changes. |
| |
| Version 1.6.12rc01 [June 6, 2014] |
| Relocated new code from 1.6.11beta06 in png.c to a point after the |
| declarations (Max Stepin). |
| |
| Version 1.6.12rc02 [June 7, 2014] |
| Changed file permissions of contrib/tools/intgamma.sh, |
| test-driver, and compile from 0644 to 0755 (Cosmin). |
| |
| Version 1.6.12rc03 [June 8, 2014] |
| Ensure "__has_attribute()" macro exists before trying to use it with |
| old clang compilers (MacPorts Ticket #43939). |
| |
| Version 1.6.12 [June 12, 2014] |
| No changes. |
| |
| Version 1.6.13beta01 [July 4, 2014] |
| Quieted -Wsign-compare and -Wclobber compiler warnings in |
| contrib/pngminus/*.c |
| Added "(void) png_ptr;" where needed in contrib/gregbook to quiet |
| compiler complaints about unused pointers. |
| Split a long output string in contrib/gregbook/rpng2-x.c. |
| Added "PNG_SET_OPTION" requirement for sRGB chunk support to pnglibconf.dfa, |
| Needed for write-only support (John Bowler). |
| Changed "if defined(__ARM_NEON__)" to |
| "if (defined(__ARM_NEON__) || defined(__ARM_NEON))" (James Wu). |
| Fixed clang no-warning builds: png_digit was defined but never used. |
| |
| Version 1.6.13beta02 [July 21, 2014] |
| Fixed an incorrect separator ("/" should be "\") in scripts/makefile.vcwin32 |
| (bug report from Wolfgang S. Kechel). Bug was introduced in libpng-1.6.11. |
| Also fixed makefile.bc32, makefile.bor, makefile.msc, makefile.intel, and |
| makefile.tc3 similarly. |
| |
| Version 1.6.13beta03 [August 3, 2014] |
| 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). |
| |
| Version 1.6.13beta04 [August 8, 2014] |
| Added opinion that the ECCN (Export Control Classification Number) for |
| libpng is EAR99 to the README file. |
| Eliminated use of "$<" in makefile explicit rules, when copying |
| $PNGLIBCONF_H_PREBUILT. This does not work on some versions of make; |
| bug introduced in libpng version 1.6.11. |
| |
| Version 1.6.13rc01 [August 14, 2014] |
| Made "ccopts" agree with "CFLAGS" in scripts/makefile.hp* and makefile.*sunu |
| |
| Version 1.6.13 [August 21, 2014] |
| No changes. |
| |
| Version 1.6.14beta01 [September 14, 2014] |
| Guard usage of png_ptr->options with #ifdef PNG_SET_OPTION_SUPPORTED. |
| Do not build contrib/tools/pngfix.c when PNG_SETJMP_NOT_SUPPORTED, |
| to allow "make" to complete without setjmp support (bug report by |
| Claudio Fontana) |
| Add "#include <setjmp.h>" to contrib/tools/pngfix.c (John Bowler) |
| |
| Version 1.6.14beta02 [September 18, 2014] |
| Use nanosleep() instead of usleep() in contrib/gregbook/rpng2-x.c |
| because usleep() is deprecated. |
| Define usleep() in contrib/gregbook/rpng2-x.c if not already defined |
| in unistd.h and nanosleep() is not available; fixes error introduced |
| in libpng-1.6.13. |
| Disable floating point exception handling in pngvalid.c when |
| PNG_FLOATING_ARITHMETIC is not supported (bug report by "zootus |
| at users.sourceforge.net"). |
| |
| Version 1.6.14beta03 [September 19, 2014] |
| Define FE_DIVBYZERO, FE_INVALID, and FE_OVERFLOW in pngvalid.c if not |
| already defined. Revert floating point exception handling in pngvalid.c |
| to version 1.6.14beta01 behavior. |
| |
| Version 1.6.14beta04 [September 27, 2014] |
| 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 1.6.14beta05 [October 1, 2014] |
| Added "option READ_iCCP enables READ_COMPRESSED_TEXT" to pnglibconf.dfa |
| |
| Version 1.6.14beta06 [October 5, 2014] |
| 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. |
| |
| Version 1.6.14beta07 [October 7, 2014] |
| Removed "option WRITE_COMPRESSED_TEXT enables WRITE_TEXT" from pnglibconf.dfa |
| Only mark text chunks as written after successfully writing them. |
| |
| Version 1.6.14rc01 [October 15, 2014] |
| Fixed some typos in comments. |
| |
| Version 1.6.14rc02 [October 17, 2014] |
| Changed png_convert_to_rfc_1123() to png_convert_to_rfc_1123_buffer() |
| in the manual, to reflect the change made in libpng-1.6.0. |
| Updated README file to explain that direct access to the png_struct |
| and info_struct members has not been permitted since libpng-1.5.0. |
| |
| Version 1.6.14 [October 23, 2014] |
| No changes. |
| |
| Version 1.6.15beta01 [October 29, 2014] |
| Changed "if (!x)" to "if (x == 0)" and "if (x)" to "if (x != 0)" |
| Simplified png_free_data(). |
| Added missing "ptr = NULL" after some instances of png_free(). |
| |
| Version 1.6.15beta02 [November 1, 2014] |
| Changed remaining "if (!x)" to "if (x == 0)" and "if (x)" to "if (x != 0)" |
| |
| Version 1.6.15beta03 [November 3, 2014] |
| Added PNG_USE_ARM_NEON configuration flag (Marcin Juszkiewicz). |
| |
| Version 1.6.15beta04 [November 4, 2014] |
| Removed new PNG_USE_ARM_NEON configuration flag and made a one-line |
| revision to configure.ac to support ARM on aarch64 instead (John Bowler). |
| |
| Version 1.6.15beta05 [November 5, 2014] |
| Use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING in |
| example.c, pngtest.c, and applications in the contrib directory. |
| Fixed an out-of-range read in png_user_version_check() (Bug report from |
| Qixue Xiao, CVE-2015-8540). |
| 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 1.6.15beta06 [November 6, 2014] |
| Reverted use png_get_libpng_ver(NULL) instead of PNG_LIBPNG_VER_STRING |
| in the manual, example.c, pngtest.c, and applications in the contrib |
| directory. It was incorrect advice. |
| |
| Version 1.6.15beta07 [November 7, 2014] |
| Removed #ifdef PNG_16BIT_SUPPORTED/#endif around png_product2(); it is |
| needed by png_reciprocal2(). |
| Added #ifdef PNG_16BIT_SUPPORTED/#endif around png_log16bit() and |
| png_do_swap(). |
| Changed all "#endif /* PNG_FEATURE_SUPPORTED */" to "#endif /* FEATURE */" |
| |
| Version 1.6.15beta08 [November 8, 2014] |
| More housecleaning in *.h |
| |
| Version 1.6.15rc01 [November 13, 2014] |
| |
| Version 1.6.15rc02 [November 14, 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). |
| |
| Version 1.6.15rc03 [November 16, 2014] |
| Added "-D_CRT_SECURE_NO_WARNINGS" to CFLAGS in scripts/makefile.vcwin32. |
| Removed the obsolete $ARCH variable from scripts/makefile.darwin. |
| |
| Version 1.6.15 [November 20, 2014] |
| No changes. |
| |
| Version 1.6.16beta01 [December 14, 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/symbols.dfn to work with MinGW/MSYS |
| (Bob Friesenhahn). |
| |
| Version 1.6.16beta02 [December 15, 2014] |
| Revised Makefile.am and scripts/*.dfn again to work with MinGW/MSYS; |
| renamed scripts/*.dfn to scripts/*.c (John Bowler). |
| |
| Version 1.6.16beta03 [December 21, 2014] |
| Quiet a "comparison always true" warning in pngstest.c (John Bowler). |
| |
| Version 1.6.16rc01 [December 21, 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). |
| |
| Version 1.6.16rc02 [December 21, 2014] |
| Undid the update to pngrutil.c in 1.6.16rc01. |
| |
| Version 1.6.16rc03 [December 21, 2014] |
| Fixed an overflow in png_combine_row() with very wide interlaced images |
| (Bug report and fix by John Bowler, CVE-2014-9495). |
| |
| Version 1.6.16 [December 22, 2014] |
| No changes. |
| |
| Version 1.6.17beta01 [January 29, 2015] |
| Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h |
| Corrected the width limit calculation in png_check_IHDR(). |
| 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 |
| 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. |
| 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. |
| 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. |
| Added "& 0xff" to many instances of expressions that are typecast |
| to (png_byte), to avoid Coverity warnings. |
| |
| Version 1.6.17beta02 [February 7, 2015] |
| Work around one more Coverity-scan dead-code warning. |
| Do not build png_product2() when it is unused. |
| |
| Version 1.6.17beta03 [February 17, 2015] |
| Display user limits in the output from pngtest. |
| 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. |
| |
| Version 1.6.17beta04 [February 21, 2015] |
| Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default. |
| Allow user to call png_get_IHDR() with NULL arguments (Reuben Hawkins). |
| Rebuilt configure scripts with automake-1.15 and libtool-2.4.6 |
| |
| Version 1.6.17beta05 [February 25, 2015] |
| Restored compiling of png_reciprocal2 with PNG_NO_16BIT. |
| |
| Version 1.6.17beta06 [February 27, 2015] |
| Moved png_set_filter() prototype into a PNG_WRITE_SUPPORTED block |
| of png.h. |
| Avoid runtime checks when converting integer to png_byte with |
| Visual Studio (Sergey Kosarevsky) |
| |
| Version 1.6.17rc01 [March 4, 2015] |
| No changes. |
| |
| Version 1.6.17rc02 [March 9, 2015] |
| Removed some comments that the configure script did not handle |
| properly from scripts/pnglibconf.dfa and pnglibconf.h.prebuilt. |
| Free the unknown_chunks structure even when it contains no data. |
| |
| Version 1.6.17rc03 [March 12, 2015] |
| Updated CMakeLists.txt to add OSX framework, change YES/NO to ON/OFF |
| for consistency, and remove some useless tests (Alexey Petruchik). |
| |
| Version 1.6.17rc04 [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). |
| |
| Version 1.6.17rc05 [March 21, 2015] |
| Define PNG_FILTER_* and PNG_FILTER_VALUE_* in png.h even when WRITE |
| is not supported (John Bowler). This fixes an error introduced in |
| libpng-1.6.17beta06. |
| Reverted "& 0xff" additions of version 1.6.17beta01. Libpng passes |
| the Coverity scan without them. |
| |
| Version 1.6.17rc06 [March 23, 2015] |
| Remove pnglibconf.dfn and pnglibconf.pre with "make clean". |
| Reformatted some "&0xff" instances to "& 0xff". |
| Fixed simplified 8-bit-linear to sRGB alpha. The calculated alpha |
| value was wrong. It's not clear if this affected the final stored |
| value; in the obvious code path the upper and lower 8-bits of the |
| alpha value were identical and the alpha was truncated to 8-bits |
| rather than dividing by 257 (John Bowler). |
| |
| Version 1.6.17 [March 26, 2015] |
| No changes. |
| |
| Version 1.6.18beta01 [April 1, 2015] |
| Removed PNG_SET_CHUNK_[CACHE|MALLOC]_LIMIT_SUPPORTED macros. They |
| have been combined with PNG_SET_USER_LIMITS_SUPPORTED (resolves |
| bug report by Andrew Church). |
| Fixed rgb_to_gray checks and added tRNS checks to pngvalid.c. This |
| fixes some arithmetic errors that caused some tests to fail on |
| some 32-bit platforms (Bug reports by Peter Breitenlohner [i686] |
| and Petr Gajdos [i586]). |
| |
| Version 1.6.18beta02 [April 26, 2015] |
| Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler |
| (Bug report by Viktor Szakats). |
| |
| Version 1.6.18beta03 [May 6, 2015] |
| Replaced "unexpected" with an integer (0xabadca11) in pngset.c |
| where a long was expected, to avoid a compiler warning when PNG_DEBUG > 1. |
| Added contrib/examples/simpleover.c, to demonstrate how to handle |
| alpha compositing of multiple images, using the "simplified API" |
| and an example PNG generation tool, contrib/examples/genpng.c |
| (John Bowler). |
| |
| Version 1.6.18beta04 [May 20, 2015] |
| PNG_RELEASE_BUILD replaces tests where the code depended on the build base |
| type and can be defined on the command line, allowing testing in beta |
| builds (John Bowler). |
| Avoid Coverity issue 80858 (REVERSE NULL) in pngtest.c PNG_DEBUG builds. |
| Avoid a harmless potential integer overflow in png_XYZ_from_xy() (Bug |
| report from Christopher Ferris). |
| |
| Version 1.6.18beta05 [May 31, 2015] |
| Backport filter selection code from libpng-1.7.0beta51, to combine |
| sub_row, up_row, avg_row, and paeth_row into try_row and tst_row. |
| Changed png_voidcast(), etc., to voidcast(), etc., in contrib/tools/pngfix.c |
| to avoid confusion with the libpng private macros. |
| Fixed old cut&paste bug in the weighted filter selection code in |
| pngwutil.c, introduced in libpng-0.95, March 1997. |
| |
| Version 1.6.18beta06 [June 1, 2015] |
| Removed WRITE_WEIGHTED_FILTERED code, to save a few kbytes of the |
| compiled library size. It never worked properly and as far as we can |
| tell, no one uses it. The png_set_filter_heuristics() and |
| png_set_filter_heuristics_fixed() APIs are retained but deprecated |
| and do nothing. |
| |
| Version 1.6.18beta07 [June 6, 2015] |
| Removed non-working progressive reader 'skip' function. This |
| function has apparently never been used. It was implemented |
| to support back-door modification of png_struct in libpng-1.4.x |
| but (because it does nothing and cannot do anything) was apparently |
| never tested (John Bowler). |
| Fixed cexcept.h in which GCC 5 now reports that one of the auto |
| variables in the Try macro needs to be volatile to prevent value |
| being lost over the setjmp (John Bowler). |
| Fixed NO_WRITE_FILTER and -Wconversion build breaks (John Bowler). |
| Fix g++ build breaks (John Bowler). |
| Quieted some Coverity issues in pngfix.c, png-fix-itxt.c, pngvalid.c, |
| pngstest.c, and pngimage.c. Most seem harmless, but png-fix-itxt |
| would only work with iTXt chunks with length 255 or less. |
| Added #ifdef's to contrib/examples programs so people don't try |
| to compile them without the minimum required support enabled |
| (suggested by Flavio Medeiros). |
| |
| Version 1.6.18beta08 [June 30, 2015] |
| Eliminated the final two Coverity defects (insecure temporary file |
| handling in contrib/libtests/pngstest.c; possible overflow of |
| unsigned char in contrib/tools/png-fix-itxt.c). To use the "secure" |
| file handling, define PNG_USE_MKSTEMP, otherwise "tmpfile()" will |
| be used. |
| Removed some unused WEIGHTED_FILTER macros from png.h and pngstruct.h |
| |
| Version 1.6.18beta09 [July 5, 2015] |
| Removed some useless typecasts from contrib/tools/png-fix-itxt.c |
| Fixed a new signed-unsigned comparison in pngrtran.c (Max Stepin). |
| Replaced arbitrary use of 'extern' with #define PNG_LINKAGE_*. To |
| preserve API compatibility, the new defines all default to "extern" |
| (requested by Jan Nijtmans). |
| |
| Version 1.6.18rc01 [July 9, 2015] |
| Belatedly added Mans Rullgard and James Yu to the list of Contributing |
| Authors. |
| |
| Version 1.6.18rc02 [July 12, 2015] |
| Restored unused FILTER_HEURISTIC macros removed at libpng-1.6.18beta08 |
| to png.h to avoid compatibility warnings. |
| |
| Version 1.6.18rc03 [July 15, 2015] |
| Minor changes to the man page |
| |
| Version 1.6.18 [July 23, 2015] |
| No changes. |
| |
| Version 1.6.19beta01 [July 30, 2015] |
| Updated obsolete information about the simplified API macros in the |
| manual pages (Bug report by Arc Riley). |
| Avoid potentially dereferencing NULL info_ptr in png_info_init_3(). |
| Rearranged png.h to put the major sections in the same order as |
| in libpng17. |
| Eliminated unused PNG_COST_SHIFT, PNG_WEIGHT_SHIFT, PNG_COST_FACTOR, and |
| PNG_WEIGHT_FACTOR macros. |
| Suppressed some warnings from the Borland C++ 5.5.1/5.82 compiler |
| (Bug report by Viktor Szakats). Several warnings remain and are |
| unavoidable, where we test for overflow. |
| Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c |
| Fixed uninitialized variable in contrib/gregbook/rpng2-x.c |
| |
| Version 1.6.19beta02 [August 19, 2015] |
| 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). |
| Removed unreachable "break" statements in png.c, pngread.c, and pngrtran.c |
| to suppress clang warnings (Bug report by Viktor Szakats). |
| Fixed some bad links in the man page. |
| Changed "n bit" to "n-bit" in comments. |
| Added signed/unsigned 16-bit safety net. This removes the dubious |
| 0x8000 flag definitions on 16-bit systems. They aren't supported |
| yet the defs *probably* work, however it seems much safer to do this |
| and be advised if anyone, contrary to advice, is building libpng 1.6 |
| on a 16-bit system. It also adds back various switch default clauses |
| for GCC; GCC errors out if they are not present (with an appropriately |
| high level of warnings). |
| Safely convert num_bytes to a png_byte in png_set_sig_bytes() (Robert |
| Seacord). |
| Fixed the recently reported 1's complement security issue by replacing |
| the value that is illegal in the PNG spec, in both signed and unsigned |
| values, with 0. Illegal unsigned values (anything greater than or equal |
| to 0x80000000) can still pass through, but since these are not illegal |
| in ANSI-C (unlike 0x80000000 in the signed case) the checking that |
| occurs later can catch them (John Bowler). |
| |
| Version 1.6.19beta03 [September 26, 2015] |
| Fixed png_save_int_32 when int is not 2's complement (John Bowler). |
| Updated libpng16 with all the recent test changes from libpng17, |
| including changes to pngvalid.c to ensure that the original, |
| distributed, version of contrib/visupng/cexcept.h can be used |
| (John Bowler). |
| pngvalid contains the correction to the use of SAVE/STORE_ |
| UNKNOWN_CHUNKS; a bug revealed by changes in libpng 1.7. More |
| tests contain the --strict option to detect warnings and the |
| pngvalid-standard test has been corrected so that it does not |
| turn on progressive-read. There is a separate test which does |
| that. (John Bowler) |
| Also made some signed/unsigned fixes. |
| 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). |
| 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). |
| Removed the '--strict' in 1.6 because of the double-gamma-correction |
| warning, updated pngstest-errors.h for the errors detected with the |
| new contrib/testspngs PNG test files (John Bowler). |
| |
| Version 1.6.19beta04 [October 15, 2015] |
| Worked around rgb-to-gray issues in libpng 1.6. The previous |
| attempts to ignore the errors in the code aren't quite enough to |
| deal with the 'channel selection' encoding added to libpng 1.7; abort. |
| pngvalid.c is changed to drop this encoding in prior versions. |
| 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 support to pngtest.c |
| |
| Version 1.6.19rc01 [October 23, 2015] |
| No changes. |
| |
| Version 1.6.19rc02 [October 31, 2015] |
| Prevent setting or writing over-length PLTE chunk (Cosmin Truta). |
| Silently truncate over-length PLTE chunk while reading. |
| Libpng incorrectly calculated the output rowbytes when the application |
| decreased either the number of channels or the bit depth (or both) in |
| a user transform. This was safe; libpng overallocated buffer space |
| (potentially by quite a lot; up to 4 times the amount required) but, |
| from 1.5.4 on, resulted in a png_error (John Bowler). |
| |
| Version 1.6.19rc03 [November 3, 2015] |
| 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 1.6.19rc04 [November 5, 2015] |
| Fixed new bug with CRC error after reading an over-length palette |
| (bug report by Cosmin Truta) (CVE-2015-8126). |
| |
| Version 1.6.19 [November 12, 2015] |
| Cleaned up coding style in png_handle_PLTE(). |
| |
| Version 1.6.20beta01 [November 20, 2015] |
| Avoid potential pointer overflow/underflow in png_handle_sPLT() and |
| png_handle_pCAL() (Bug report by John Regehr). |
| |
| Version 1.6.20beta02 [November 23, 2015] |
| 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. Fixes CVE-2015-8472. |
| |
| Version 1.6.20beta03 [November 24, 2015] |
| Backported tests from libpng-1.7.0beta69. |
| |
| Version 1.6.20rc01 [November 26, 2015] |
| 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. |
| |
| Version 1.6.20rc02 [November 29, 2015] |
| In libpng 1.6 zlib initialization was changed to use the window size |
| in the zlib stream, not a fixed value. This causes some invalid images, |
| where CINFO is too large, to display 'correctly' if the rest of the |
| data is valid. This provides a workaround for zlib versions where the |
| error arises (ones that support the API change to use the window size |
| in the stream). |
| |
| Version 1.6.20 [December 3, 2015] |
| No changes. |
| |
| Version 1.6.21beta01 [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. |
| |
| Version 1.6.21beta02 [December 14, 2015] |
| Moved png_check_keyword() from pngwutil.c to pngset.c |
| 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. |
| |
| Version 1.6.21beta03 [December 18, 2015] |
| 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). |
| This changes pngvalid to use BE random numbers; this used to produce |
| errors but these should not be fixed as a result of the previous changes. |
| |
| Version 1.6.21rc01 [January 4, 2016] |
| In projects/vstudio, combined readme.txt and WARNING into README.txt |
| |
| Version 1.6.21rc02 [January 7, 2016] |
| Relocated assert() in contrib/tools/pngfix.c, bug found by American |
| Fuzzy Lop, reported by Brian Carpenter. |
| Marked 'limit' UNUSED in transform_range_check(). This only affects |
| release builds. |
| |
| Version 1.6.21 [January 15, 2016] |
| Worked around a false-positive Coverity issue in pngvalid.c. |
| |
| Version 1.6.22beta01 [January 23, 2016] |
| Changed PNG_USE_MKSTEMP to __COVERITY__ to select alternate |
| "tmpfile()" implementation in contrib/libtests/pngstest.c |
| Fixed NO_STDIO build of pngunknown.c to skip calling png_init_io() |
| if there is no stdio.h support. |
| Added a png_image_write_to_memory() API and a number of assist macros |
| to allow an application that uses the simplified API write to bypass |
| stdio and write directly to memory. |
| Added some warnings (png.h) and some check code to detect *possible* |
| overflow in the ROW_STRIDE and simplified image SIZE macros. This |
| disallows image width/height/format that *might* overflow. This is |
| a quiet API change that limits in-memory image size (uncompressed) to |
| less than 4GByte and image row size (stride) to less than 2GByte. |
| Revised workaround for false-positive Coverity issue in pngvalid.c. |
| |
| Version 1.6.22beta02 [February 8, 2016] |
| Only use exit(77) in configure builds. |
| Corrected error in PNG_IMAGE_PNG_SIZE_MAX. This new macro underreported |
| the palette size because it failed to take into account that the memory |
| palette has to be expanded to full RGB when it is written to PNG. |
| Updated CMakeLists.txt, added supporting scripts/gen*.cmake.in |
| and test.cmake.in (Roger Leigh). |
| Relaxed limit checks on gamma values in pngrtran.c. As suggested in |
| the comments gamma values outside the range currently permitted |
| by png_set_alpha_mode are useful for HDR data encoding. These values |
| are already permitted by png_set_gamma so it is reasonable caution to |
| extend the png_set_alpha_mode range as HDR imaging systems are starting |
| to emerge. |
| |
| Version 1.6.22beta03 [March 9, 2016] |
| Added a common-law trademark notice and export control information |
| to the LICENSE file, png.h, and the man page. |
| Restored "& 0xff" in png_save_uint_16() and png_save_uint_32() that |
| were accidentally removed from libpng-1.6.17. |
| Changed PNG_INFO_cHNK and PNG_FREE_cHNK from 0xnnnn to 0xnnnnU in png.h |
| (Robert C. Seacord). |
| Removed dubious "#if INT_MAX" test from png.h that was added to |
| libpng-1.6.19beta02 (John Bowler). |
| Add ${INCLUDES} in scripts/genout.cmake.in (Bug report by Nixon Kwok). |
| Updated LICENSE to say files in the contrib directory are not |
| necessarily under the libpng license, and that some makefiles have |
| other copyright owners. |
| Added INTEL-SSE2 support (Mike Klein and Matt Sarett, Google, Inc.). |
| Made contrib/libtests/timepng more robust. The code no longer gives |
| up/fails on invalid PNG data, it just skips it (with error messages). |
| The code no longer fails on PNG files with data beyond IEND. Options |
| exist to use png_read_png (reading the whole image, not by row) and, in |
| that case, to apply any of the supported transforms. This makes for |
| more realistic testing; the decoded data actually gets used in a |
| meaningful fashion (John Bowler). |
| Fixed some misleading indentation (Krishnaraj Bhat). |
| |
| Version 1.6.22beta04 [April 5, 2016] |
| Force GCC compilation to C89 if needed (Dagobert Michelsen). |
| SSE filter speed improvements for bpp=3: |
| memcpy-free implementations of load3() / store3(). |
| call load3() only when needed at the end of a scanline. |
| |
| Version 1.6.22beta05 [April 27, 2016] |
| Added PNG_FAST_FILTERS macro (defined as |
| PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP). |
| Various fixes for contrib/libtests/timepng.c |
| Moved INTEL-SSE code from pngpriv.h into contrib/intel/intel_sse.patch. |
| Fixed typo (missing underscore) in #define PNG_READ_16_TO_8_SUPPORTED |
| (Bug report by Y.Ohashik). |
| |
| Version 1.6.22beta06 [May 5, 2016] |
| Rebased contrib/intel_sse.patch. |
| Quieted two Coverity issues in contrib/libtests/timepng.c. |
| Fixed issues with scripts/genout.cmake.in (David Capello, Nixon Kwok): |
| Added support to use multiple directories in ZLIBINCDIR variable, |
| Fixed CMAKE_C_FLAGS with multiple values when genout is compiled on MSVC, |
| Fixed pnglibconf.c compilation on OS X including the sysroot path. |
| |
| Version 1.6.22rc01 [May 14, 2016] |
| No changes. |
| |
| Version 1.6.22rc02 [May 16, 2016] |
| Removed contrib/timepng from default build; it does not build on platforms |
| that don't supply clock_gettime(). |
| |
| Version 1.6.22rc03 [May 17, 2016] |
| Restored contrib/timepng to default build but check for the presence |
| of clock_gettime() in configure.ac and Makefile.am. |
| |
| Version 1.6.22 [May 26, 2016] |
| No changes. |
| |
| Version 1.6.23beta01 [May 29, 2016] |
| Stop a potential memory leak in png_set_tRNS() (Bug report by Ted Ying). |
| Fixed the progressive reader to handle empty first IDAT chunk properly |
| (patch by Timothy Nikkel). This bug was introduced in libpng-1.6.0 and |
| only affected the libpng16 branch. |
| Added tests in pngvalid.c to check zero-length IDAT chunks in various |
| positions. Fixed the sequential reader to handle these more robustly |
| (John Bowler). |
| |
| Version 1.6.23rc01 [June 2, 2016] |
| Corrected progressive read input buffer in pngvalid.c. The previous version |
| the code invariably passed just one byte at a time to libpng. The intent |
| was to pass a random number of bytes in the range 0..511. |
| Moved sse2 prototype from pngpriv.h to contrib/intel/intel_sse.patch. |
| Added missing ")" in pngerror.c (Matt Sarrett). |
| |
| Version 1.6.23rc02 [June 4, 2016] |
| Fixed undefined behavior in png_push_save_buffer(). Do not call |
| memcpy() with a null source, even if count is zero (Leon Scroggins III). |
| |
| Version 1.6.23 [June 9, 2016] |
| Fixed bad link to RFC2083 in png.5 (Nikola Forro). |
| |
| Version 1.6.24beta01 [June 11, 2016] |
| Avoid potential overflow of the PNG_IMAGE_SIZE macro. This macro |
| is not used within libpng, but is used in some of the examples. |
| |
| Version 1.6.24beta02 [June 23, 2016] |
| Correct filter heuristic overflow handling. This was broken when the |
| write filter code was moved out-of-line; if there is a single filter and |
| the heuristic sum overflows the calculation of the filtered line is not |
| completed. In versions prior to 1.6 the code was duplicated in-line |
| and the check not performed, so the filter operation completed; however, |
| in the multi-filter case where the sum is performed the 'none' filter would |
| be selected if all the sums overflowed, even if it wasn't in the filter |
| list. The fix to the first problem is simply to provide PNG_SIZE_MAX as |
| the current lmins sum value; this means the sum can never exceed it and |
| overflows silently. A reasonable compiler that does choose to inline |
| the code will simply eliminate the sum check. |
| The fix to the second problem is to use high precision arithmetic (this is |
| implemented in 1.7), however a simple safe fix here is to chose the lowest |
| numbered filter in the list from png_set_filter (this only works if the |
| first problem is also fixed) (John Bowler). |
| Use a more efficient absolute value calculation on SSE2 (Matthieu Darbois). |
| Fixed the case where PNG_IMAGE_BUFFER_SIZE can overflow in the application |
| as a result of the application using an increased 'row_stride'; previously |
| png_image_finish_read only checked for overflow on the base calculation of |
| components. (I.e. it checked for overflow of a 32-bit number on the total |
| number of pixel components in the output format, not the possibly padded row |
| length and not the number of bytes, which for linear formats is twice the |
| number of components.) |
| MSVC does not like '-(unsigned)', so replaced it with 0U-(unsigned) |
| MSVC does not like (uInt) = -(unsigned) (i.e. as an initializer), unless |
| the conversion is explicitly invoked by a cast. |
| Put the SKIP definition in the correct place. It needs to come after the |
| png.h include (see all the other .c files in contrib/libtests) because it |
| depends on PNG_LIBPNG_VER. |
| Removed the three compile warning options from the individual project |
| files into the zlib.props globals. It increases the warning level from 4 |
| to All and adds a list of the warnings that need to be turned off. This is |
| semi-documentary; the intent is to tell libpng users which warnings have |
| been examined and judged non-fixable at present. The warning about |
| structure padding is fixable, but it would be a significant change (moving |
| structure members around). |
| |
| Version 1.6.24beta03 [July 4, 2016] |
| Optimized absolute value calculation in filter selection, similar to |
| code in the PAETH decoder in pngrutil.c. Build with PNG_USE_ABS to |
| use this. |
| Added pngcp to the build together with a pngcp.dfa configuration test. |
| Added high resolution timing to pngcp. |
| Added "Common linking failures" section to INSTALL. |
| Relocated misplaced #endif in png.c sRGB profile checking. |
| Fixed two Coverity issues in pngcp.c. |
| |
| Version 1.6.24beta04 [July 8, 2016] |
| Avoid filter-selection heuristic sum calculations in cases where only one |
| filter is a candidate for selection. This trades off code size (added |
| private png_setup_*_row_only() functions) for speed. |
| |
| Version 1.6.24beta05 [July 13, 2016] |
| Fixed some indentation to comply with our coding style. |
| Added contrib/tools/reindent. |
| |
| Version 1.6.24beta06 [July 18, 2016] |
| Fixed more indentation to comply with our coding style. |
| Eliminated unnecessary tests of boolean png_isaligned() vs 0. |
| |
| Version 1.6.24rc01 [July 25, 2016] |
| No changes. |
| |
| Version 1.6.24rc02 [August 1, 2016] |
| Conditionally compile SSE2 headers in contrib/intel/intel_sse.patch |
| Conditionally compile png_decompress_chunk(). |
| |
| Version 1.6.24rc03 [August 2, 2016] |
| Conditionally compile ARM_NEON headers in pngpriv.h |
| Updated contrib/intel/intel_sse.patch |
| |
| Version 1.6.24[August 4, 2016] |
| No changes. |
| |
| Version 1.6.25beta01 [August 12, 2016] |
| Reject oversized iCCP profile immediately. |
| Cleaned up PNG_DEBUG compile of pngtest.c. |
| Conditionally compile png_inflate(). |
| |
| Version 1.6.25beta02 [August 18, 2016] |
| Don't install pngcp; it conflicts with pngcp in the pngtools package. |
| Minor editing of INSTALL, (whitespace, added copyright line) |
| |
| Version 1.6.25rc01 [August 24, 2016] |
| No changes. |
| |
| Version 1.6.25rc02 [August 29, 2016] |
| Added MIPS support (Mandar Sahastrabuddhe <Mandar.Sahastrabuddhe@imgtec.com>). |
| Only the UP filter is currently implemented. |
| |
| Version 1.6.25rc03 [August 29, 2016] |
| Rebased contrib/intel/intel_sse.patch after the MIPS implementation. |
| |
| Version 1.6.25rc04 [August 30, 2016] |
| Added MIPS support for SUB, AVG, and PAETH filters (Mandar Sahastrabuddhe). |
| |
| Version 1.6.25rc05 [August 30, 2016] |
| Rebased contrib/intel/intel_sse.patch after the MIPS implementation update.. |
| |
| Version 1.6.25 [September 1, 2016] |
| No changes. |
| |
| Version 1.6.26beta01 [September 26, 2016] |
| Fixed handling zero length IDAT in pngfix (bug report by Agostino Sarubbo, |
| bugfix by John Bowler). |
| Do not issue a png_error() on read in png_set_pCAL() because png_handle_pCAL |
| has allocated memory that libpng needs to free. |
| Conditionally compile png_set_benign_errors() in pngread.c and pngtest.c |
| Issue a png_benign_error instead of a png_error on ADLER32 mismatch |
| while decoding compressed data chunks. |
| Changed PNG_ZLIB_VERNUM to ZLIB_VERNUM in pngpriv.h, pngstruct.h, and |
| pngrutil.c. |
| If CRC handling of critical chunks has been set to PNG_CRC_QUIET_USE, |
| ignore the ADLER32 checksum in the IDAT chunk as well as the chunk CRCs. |
| Issue png_benign_error() on ADLER32 checksum mismatch instead of png_error(). |
| Add tests/badcrc.png and tests/badadler.png to tests/pngtest. |
| Merged pngtest.c with libpng-1.7.0beta84/pngtest.c |
| |
| Version 1.6.26beta02 [October 1, 2016] |
| Updated the documentation about CRC and ADLER32 handling. |
| Quieted 117 warnings from clang-3.8 in pngtrans.c, pngread.c, |
| pngwrite.c, pngunknown.c, and pngvalid.c. |
| Quieted 58 (out of 144) -Wconversion compiler warnings by changing |
| flag definitions in pngpriv.h from 0xnnnn to 0xnnnnU and trivial changes |
| in png.c, pngread.c, and pngwutil.c. |
| |
| Version 1.6.26beta03 [October 2, 2016] |
| Removed contrib/libtests/*.orig and *.rej that slipped into the tarballs. |
| Quieted the 86 remaining -Wconversion compiler warnings by |
| revising the png_isaligned() macro and trivial changes in png.c, |
| pngerror.c, pngget.c, pngmem.c, pngset.c, pngrtran.c, pngrutil.c, |
| pngwtran.c, pngwrite.c, and pngwutil.c. |
| |
| Version 1.6.26beta04 [October 3, 2016] |
| Quieted (bogus?) clang warnings about "absolute value has no effect" |
| when PNG_USE_ABS is defined. |
| Fixed offsets in contrib/intel/intel_sse.patch |
| |
| Version 1.6.26beta05 [October 6, 2016] |
| Changed integer constant 4294967294 to unsigned 4294967294U in pngconf.h |
| to avoid a signed/unsigned compare in the preprocessor. |
| |
| Version 1.6.26beta06 [October 7, 2016] |
| Use zlib-1.2.8.1 inflateValidate() instead of inflateReset2() to |
| optionally avoid ADLER32 evaluation. |
| |
| Version 1.6.26rc01 [October 12, 2016] |
| No changes. |
| |
| Version 1.6.26 [October 20, 2016] |
| Cosmetic change, "ptr != 0" to "ptr != NULL" in png.c and pngrutil.c |
| Despammed email addresses (replaced "@" with " at "). |
| |
| Version 1.6.27beta01 [November 2, 2016] |
| Restrict the new ADLER32-skipping to IDAT chunks. It broke iCCP chunk |
| handling: an erroneous iCCP chunk would throw a png_error and reject the |
| entire PNG image instead of rejecting just the iCCP chunk with a warning, |
| if built with zlib-1.2.8.1. |
| |
| Version 1.6.27rc01 [December 27, 2016] |
| Control ADLER32 checking with new PNG_IGNORE_ADLER32 option. Fixes |
| an endless loop when handling erroneous ADLER32 checksums; bug |
| introduced in libpng-1.6.26. |
| Removed the use of a macro containing the pre-processor 'defined' |
| operator. It is unclear whether this is valid; a macro that |
| "generates" 'defined' is not permitted, but the use of the word |
| "generates" within the C90 standard seems to imply more than simple |
| substitution of an expression itself containing a well-formed defined |
| operation. |
| Added ARM support to CMakeLists.txt (Andreas Franek). |
| |
| Version 1.6.27 [December 29, 2016] |
| Fixed a potential null pointer dereference in png_set_text_2() (bug report |
| and patch by Patrick Keshishian, CVE-2016-10087). |
| |
| Version 1.6.28rc01 [January 3, 2017] |
| Fixed arm/aarch64 detection in CMakeLists.txt (Gianfranco Costamagna). |
| Added option to Cmake build allowing a custom location of zlib to be |
| specified in a scenario where libpng is being built as a subproject |
| alongside zlib by another project (Sam Serrels). |
| Changed png_ptr->options from a png_byte to png_uint_32, to accommodate |
| up to 16 options. |
| |
| Version 1.6.28rc02 [January 4, 2017] |
| Added "include(GNUInstallDirs)" to CMakeLists.txt (Gianfranco Costamagna). |
| Moved SSE2 optimization code into the main libpng source directory. |
| Configure libpng with "configure --enable-intel-sse" or compile |
| libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it. |
| |
| Version 1.6.28rc03 [January 4, 2017] |
| Backed out the SSE optimization and last CMakeLists.txt to allow time for QA. |
| |
| Version 1.6.28 [January 5, 2017] |
| No changes. |
| |
| Version 1.6.29beta01 [January 12, 2017] |
| Readded "include(GNUInstallDirs)" to CMakeLists.txt (Gianfranco Costamagna). |
| Moved SSE2 optimization code into the main libpng source directory. |
| Configure libpng with "configure --enable-intel-sse" or compile |
| libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it. |
| Simplified conditional compilation in pngvalid.c, for AIX (Michael Felt). |
| |
| Version 1.6.29beta02 [February 22, 2017] |
| Avoid conditional directives that break statements in pngrutil.c (Romero |
| Malaquias) |
| The contrib/examples/pngtopng.c recovery code was in the wrong "if" |
| branches; the comments were correct. |
| Added code for PowerPC VSX optimisation (Vadim Barkov). |
| |
| Version 1.6.29beta03 [March 1, 2017] |
| Avoid potential overflow of shift operations in png_do_expand() (Aaron Boxer). |
| Change test ZLIB_VERNUM >= 0x1281 to ZLIB_VERNUM >= 0x1290 in pngrutil.c |
| because Solaris 11 distributes zlib-1.2.8.f that is older than 1.2.8.1, |
| as suggested in zlib FAQ, item 24. |
| Suppress clang warnings about implicit sign changes in png.c |
| |
| Version 1.6.29 [March 16, 2017] |
| No changes. |
| |
| Version 1.6.30beta01 [April 1, 2017] |
| Added missing "$(CPPFLAGS)" to the compile line for c.pic.o in |
| makefile.linux and makefile.solaris-x86 (Cosmin). |
| Revised documentation of png_get_error_ptr() in the libpng manual. |
| Silence clang -Wcomma and const drop warnings (Viktor Szakats). |
| Update Sourceforge URLs in documentation (https instead of http). |
| |
| Version 1.6.30beta02 [April 22, 2017] |
| Document need to check for integer overflow when allocating a pixel |
| buffer for multiple rows in contrib/gregbook, contrib/pngminus, |
| example.c, and in the manual (suggested by Jaeseung Choi). This |
| is similar to the bug reported against pngquant in CVE-2016-5735. |
| Removed reference to the obsolete PNG_SAFE_LIMITS macro in the documentation. |
| |
| Version 1.6.30beta03 [May 22, 2017] |
| Check for integer overflow in contrib/visupng and contrib/tools/genpng. |
| Do not double evaluate CMAKE_SYSTEM_PROCESSOR in CMakeLists.txt. |
| Test CMAKE_HOST_WIN32 instead of WIN32 in CMakeLists.txt. |
| Fix some URL in documentation. |
| |
| Version 1.6.30beta04 [June 7, 2017] |
| Avoid writing an empty IDAT when the last IDAT exactly fills the |
| compression buffer (bug report by Brian Baird). This bug was |
| introduced in libpng-1.6.0. |
| |
| Version 1.6.30rc01 [June 14, 2017] |
| No changes. |
| |
| Version 1.6.30rc02 [June 25, 2017] |
| Update copyright year in pnglibconf.h, make ltmain.sh executable. |
| Add a reference to the libpng.download site in README. |
| |
| Version 1.6.30 [June 28, 2017] |
| No changes. |
| |
| Version 1.6.31beta01 [July 5, 2017] |
| Guard the definition of _POSIX_SOURCE in pngpriv.h (AIX already defines it; |
| bug report by Michael Felt). |
| Revised pngpriv.h to work around failure to compile arm/filter_neon.S |
| ("typedef" directive is unrecognized by the assembler). The problem |
| was introduced in libpng-1.6.30beta01. |
| Added "Requires: zlib" to libpng.pc.in (Pieter Neerincx). |
| Added special case for FreeBSD in arm/filter_neon.S (Maya Rashish). |
| |
| Version 1.6.31beta02 [July 8, 2017] |
| Added instructions for disabling hardware optimizations in INSTALL. |
| Added "--enable-hardware-optimizations" configuration flag to enable |
| or disable all hardware optimizations with one flag. |
| |
| Version 1.6.31beta03 [July 9, 2017] |
| Updated CMakeLists.txt to add INTEL_SSE and MIPS_MSA platforms. |
| Changed "int" to "png_size_t" in intel/filter_sse2.c to prevent |
| possible integer overflow (Bug report by John Bowler). |
| Quieted "declaration after statement" warnings in intel/filter_sse2.c. |
| Added scripts/makefile-linux-opt, which has hardware optimizations enabled. |
| |
| Version 1.6.31beta04 [July 11, 2017] |
| Removed one of the GCC-7.1.0 'strict-overflow' warnings that result when |
| integers appear on both sides of a compare. Worked around the others by |
| forcing the strict-overflow setting in the relevant functions to a level |
| where they are not reported (John Bowler). |
| Changed "FALL THROUGH" comments to "FALLTHROUGH" because GCC doesn't like |
| the space. |
| Worked around some C-style casts from (void*) because g++ 5.4.0 objects |
| to them. |
| Increased the buffer size for 'sprint' to pass the gcc 7.1.0 'sprint |
| overflow' check that is on by default with -Wall -Wextra. |
| |
| Version 1.6.31beta05 [July 13, 2017] |
| Added eXIf chunk support. |
| |
| Version 1.6.31beta06 [July 17, 2017] |
| Added a minimal eXIf chunk (with Orientation and FocalLengthIn35mmFilm |
| tags) to pngtest.png. |
| |
| Version 1.6.31beta07 [July 18, 2017] |
| Revised the eXIf chunk in pngtest.png to fix "Bad IFD1 Directory" warning. |
| |
| Version 1.6.31rc01 [July 19, 2017] |
| No changes. |
| |
| Version 1.6.31rc02 [July 25, 2017] |
| Fixed typo in example.c (png_free_image should be png_image_free) (Bug |
| report by John Smith) |
| |
| Version 1.6.31 [July 27, 2017] |
| No changes. |
| |
| Version 1.6.32beta01 [July 31, 2017] |
| Avoid possible NULL dereference in png_handle_eXIf when benign_errors |
| are allowed. Avoid leaking the input buffer "eXIf_buf". |
| Eliminated png_ptr->num_exif member from pngstruct.h and added num_exif |
| to arguments for png_get_eXIf() and png_set_eXIf(). |
| Added calls to png_handle_eXIf(() in pngread.c and png_write_eXIf() in |
| pngwrite.c, and made various other fixes to png_write_eXIf(). |
| Changed name of png_get_eXIF and png_set_eXIf() to png_get_eXIf_1() and |
| png_set_eXIf_1(), respectively, to avoid breaking API compatibility |
| with libpng-1.6.31. |
| |
| Version 1.6.32beta02 [August 1, 2017] |
| Updated contrib/libtests/pngunknown.c with eXIf chunk. |
| |
| Version 1.6.32beta03 [August 2, 2017] |
| Initialized btoa[] in pngstest.c |
| Stop memory leak when returning from png_handle_eXIf() with an error |
| (Bug report from the OSS-fuzz project). |
| |
| Version 1.6.32beta04 [August 2, 2017] |
| Replaced local eXIf_buf with info_ptr->eXIf_buf in png_handle_eXIf(). |
| Update libpng.3 and libpng-manual.txt about eXIf functions. |
| |
| Version 1.6.32beta05 [August 2, 2017] |
| Restored png_get_eXIf() and png_set_eXIf() to maintain API compatibility. |
| |
| Version 1.6.32beta06 [August 2, 2017] |
| Removed png_get_eXIf_1() and png_set_eXIf_1(). |
| |
| Version 1.6.32beta07 [August 3, 2017] |
| Check length of all chunks except IDAT against user limit to fix an |
| OSS-fuzz issue (Fixes CVE-2017-12652). |
| |
| Version 1.6.32beta08 [August 3, 2017] |
| Check length of IDAT against maximum possible IDAT size, accounting |
| for height, rowbytes, interlacing and zlib/deflate overhead. |
| Restored png_get_eXIf_1() and png_set_eXIf_1(), because strlen(eXIf_buf) |
| does not work (the eXIf chunk data can contain zeroes). |
| |
| Version 1.6.32beta09 [August 3, 2017] |
| Require cmake-2.8.8 in CMakeLists.txt. Revised symlink creation, |
| no longer using deprecated cmake LOCATION feature (Clifford Yapp). |
| Fixed five-byte error in the calculation of IDAT maximum possible size. |
| |
| Version 1.6.32beta10 [August 5, 2017] |
| Moved chunk-length check into a png_check_chunk_length() private |
| function (Suggested by Max Stepin). |
| Moved bad pngs from tests to contrib/libtests/crashers |
| Moved testing of bad pngs into a separate tests/pngtest-badpngs script |
| Added the --xfail (expected FAIL) option to pngtest.c. It writes XFAIL |
| in the output but PASS for the libpng test. |
| Require cmake-3.0.2 in CMakeLists.txt (Clifford Yapp). |
| Fix "const" declaration info_ptr argument to png_get_eXIf_1() and the |
| num_exif argument to png_get_eXIf_1() (Github Issue 171). |
| |
| Version 1.6.32beta11 [August 7, 2017] |
| Added "eXIf" to "chunks_to_ignore[]" in png_set_keep_unknown_chunks(). |
| Added huge_IDAT.png and empty_ancillary_chunks.png to testpngs/crashers. |
| Make pngtest --strict, --relax, --xfail options imply -m (multiple). |
| Removed unused chunk_name parameter from png_check_chunk_length(). |
| Relocated setting free_me for eXIf data, to stop an OSS-fuzz leak. |
| Initialize profile_header[] in png_handle_iCCP() to fix OSS-fuzz issue. |
| Initialize png_ptr->row_buf[0] to 255 in png_read_row() to fix OSS-fuzz UMR. |
| Attempt to fix a UMR in png_set_text_2() to fix OSS-fuzz issue. |
| Increase minimum zlib stream from 9 to 14 in png_handle_iCCP(), to account |
| for the minimum 'deflate' stream, and relocate the test to a point |
| after the keyword has been read. |
| Check that the eXIf chunk has at least 2 bytes and begins with "II" or "MM". |
| |
| Version 1.6.32rc01 [August 18, 2017] |
| Added a set of "huge_xxxx_chunk.png" files to contrib/testpngs/crashers, |
| one for each known chunk type, with length = 2GB-1. |
| Check for 0 return from png_get_rowbytes() and added some (size_t) typecasts |
| in contrib/pngminus/*.c to stop some Coverity issues (162705, 162706, |
| and 162707). |
| Renamed chunks in contrib/testpngs/crashers to avoid having files whose |
| names differ only in case; this causes problems with some platforms |
| (github issue #172). |
| |
| Version 1.6.32rc02 [August 22, 2017] |
| Added contrib/oss-fuzz directory which contains files used by the oss-fuzz |
| project (https://github.com/google/oss-fuzz/tree/master/projects/libpng). |
| |
| Version 1.6.32 [August 24, 2017] |
| No changes. |
| |
| Version 1.6.33beta01 [August 28, 2017] |
| Added PNGMINUS_UNUSED macro to contrib/pngminus/p*.c and added missing |
| parenthesis in contrib/pngminus/pnm2png.c (bug report by Christian Hesse). |
| Fixed off-by-one error in png_do_check_palette_indexes() (Bug report |
| by Mick P., Source Forge Issue #269). |
| |
| Version 1.6.33beta02 [September 3, 2017] |
| Initialize png_handler.row_ptr in contrib/oss-fuzz/libpng_read_fuzzer.cc |
| to fix shortlived oss-fuzz issue 3234. |
| Compute a larger limit on IDAT because some applications write a deflate |
| buffer for each row (Bug report by Andrew Church). |
| Use current date (DATE) instead of release-date (RDATE) in last |
| changed date of contrib/oss-fuzz files. |
| Enabled ARM support in CMakeLists.txt (Bernd Kuhls). |
| |
| Version 1.6.33beta03 [September 14, 2017] |
| Fixed incorrect typecast of some arguments to png_malloc() and |
| png_calloc() that were png_uint_32 instead of png_alloc_size_t |
| (Bug report by "irwir" in Github libpng issue #175). |
| Use pnglibconf.h.prebuilt when building for ANDROID with cmake (Github |
| issue 162, by rcdailey). |
| |
| Version 1.6.33rc01 [September 20, 2017] |
| Initialize memory allocated by png_inflate to zero, using memset, to |
| stop an oss-fuzz "use of uninitialized value" detection in png_set_text_2() |
| due to truncated iTXt or zTXt chunk. |
| Initialize memory allocated by png_read_buffer to zero, using memset, to |
| stop an oss-fuzz "use of uninitialized value" detection in |
| png_icc_check_tag_table() due to truncated iCCP chunk. |
| Removed a redundant test (suggested by "irwir" in Github issue #180). |
| |
| Version 1.6.33rc02 [September 23, 2017] |
| Added an interlaced version of each file in contrib/pngsuite. |
| Relocate new memset() call in pngrutil.c. |
| Removed more redundant tests (suggested by "irwir" in Github issue #180). |
| Add support for loading images with associated alpha in the Simplified |
| API (Samuel Williams). |
| |
| Version 1.6.33 [September 28, 2017] |
| Revert contrib/oss-fuzz/libpng_read_fuzzer.cc to libpng-1.6.32 state. |
| Initialize png_handler.row_ptr in contrib/oss-fuzz/libpng_read_fuzzer.cc |
| Add end_info structure and png_read_end() to the libpng fuzzer. |
| |
| Version 1.6.34 [September 29, 2017] |
| Removed contrib/pngsuite/i*.png; some of them caused test failures. |
| |
| Version 1.6.35beta01 [March 6, 2018] |
| Restored 21 of the contrib/pngsuite/i*.png, which do not cause test |
| failures. Placed the remainder in contrib/pngsuite/interlaced/i*.png. |
| Added calls to png_set_*() transforms commonly used by browsers to |
| the fuzzer. |
| Removed some unnecessary brackets in pngrtran.c |
| Fixed miscellaneous typos (Patch by github user "luzpaz"). |
| Change "ASM C" to "C ASM" in CMakeLists.txt |
| Fixed incorrect handling of bKGD chunk in sub-8-bit files (Cosmin) |
| Added hardware optimization directories to zip and 7z distributions. |
| Fixed incorrect bitmask for options. |
| Fixed many spelling typos. |
| |
| Version 1.6.35beta02 [March 28, 2018] |
| Make png_get_iCCP consistent with man page (allow compression-type argument |
| to be NULL, bug report by Lenard Szolnoki). |
| |
| Version 1.6.35 [July 15, 2018] |
| Replaced the remaining uses of png_size_t with size_t (Cosmin) |
| Fixed the calculation of row_factor in png_check_chunk_length |
| (reported by Thuan Pham in SourceForge issue #278) |
| Added missing parentheses to a macro definition |
| (suggested by "irwir" in GitHub issue #216) |
| |
| Version 1.6.36 [December 1, 2018] |
| Optimized png_do_expand_palette for ARM processors. |
| Improved performance by around 10-22% on a recent ARM Chromebook. |
| (Contributed by Richard Townsend, ARM Holdings) |
| Fixed manipulation of machine-specific optimization options. |
| (Contributed by Vicki Pfau) |
| Used memcpy instead of manual pointer arithmetic on Intel SSE2. |
| (Contributed by Samuel Williams) |
| Fixed build errors with MSVC on ARM64. |
| (Contributed by Zhijie Liang) |
| Fixed detection of libm in CMakeLists. |
| (Contributed by Cameron Cawley) |
| Fixed incorrect creation of pkg-config file in CMakeLists. |
| (Contributed by Kyle Bentley) |
| Fixed the CMake build on Windows MSYS by avoiding symlinks. |
| Fixed a build warning on OpenBSD. |
| (Contributed by Theo Buehler) |
| Fixed various typos in comments. |
| (Contributed by "luz.paz") |
| Raised the minimum required CMake version from 3.0.2 to 3.1. |
| Removed yet more of the vestigial support for pre-ANSI C compilers. |
| Removed ancient makefiles for ancient systems that have been broken |
| across all previous libpng-1.6.x versions. |
| Removed the Y2K compliance statement and the export control |
| information. |
| Applied various code style and documentation fixes. |
| |
| Version 1.6.37 [April 14, 2019] |
| Fixed a use-after-free vulnerability (CVE-2019-7317) in png_image_free. |
| Fixed a memory leak in the ARM NEON implementation of png_do_expand_palette. |
| Fixed a memory leak in pngtest.c. |
| Fixed two vulnerabilities (CVE-2018-14048, CVE-2018-14550) in |
| contrib/pngminus; refactor. |
| Changed the license of contrib/pngminus to MIT; refresh makefile and docs. |
| (Contributed by Willem van Schaik) |
| Fixed a typo in the libpng license v2. |
| (Contributed by Miguel Ojeda) |
| Added makefiles for AddressSanitizer-enabled builds. |
| Cleaned up various makefiles. |
| |
| Version 1.6.38 [September 14, 2022] |
| Added configurations and scripts for continuous integration. |
| Fixed various errors in the handling of tRNS, hIST and eXIf. |
| Implemented many stability improvements across all platforms. |
| Updated the internal documentation. |
| |
| Version 1.6.39 [November 20, 2022] |
| Changed the error handler of oversized chunks (i.e. larger than |
| PNG_USER_CHUNK_MALLOC_MAX) from png_chunk_error to png_benign_error. |
| Fixed a buffer overflow error in contrib/tools/pngfix. |
| Fixed a memory leak (CVE-2019-6129) in contrib/tools/pngcp. |
| Disabled the ARM Neon optimizations by default in the CMake file, |
| following the default behavior of the configure script. |
| Allowed configure.ac to work with the trunk version of autoconf. |
| Removed the support for "install" targets from the legacy makefiles; |
| removed the obsolete makefile.cegcc. |
| Cleaned up the code and updated the internal documentation. |
| |
| Version 1.6.40 [June 21, 2023] |
| Fixed the eXIf chunk multiplicity checks. |
| Fixed a memory leak in pCAL processing. |
| Corrected the validity report about tRNS inside png_get_valid(). |
| Fixed various build issues on *BSD, Mac and Windows. |
| Updated the configurations and the scripts for continuous integration. |
| Cleaned up the code, the build scripts, and the documentation. |
| |
| Version 1.6.41 [TODO] |
| |
| Send comments/corrections/commendations to png-mng-implement at lists.sf.net. |
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