Index: third_party/libpng/CHANGES |
diff --git a/third_party/libpng/CHANGES b/third_party/libpng/CHANGES |
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index 0000000000000000000000000000000000000000..e6f39191fea910ee63d4b86bca9a232eea6e23ae |
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+++ b/third_party/libpng/CHANGES |
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+#if 0 |
+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 seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser) |
+ Changed "cdrom.com" in documentation to "libpng.org" |
+ Revised pnggccrd.c to get it all working, and updated makefile.gcmmx (Greg). |
+ Changed type of "params" from voidp to png_voidp in png_read|write_png(). |
+ Make sure PNGAPI and PNG_IMPEXP are defined in pngconf.h. |
+ Revised the 3 instances of WRITEFILE in pngtest.c. |
+ Relocated "msvc" and "wince" project subdirectories into "dll" subdirectory. |
+ Updated png.rc in dll/msvc project |
+ Revised makefile.dec to define and use LIBPATH and INCPATH |
+ Increased size of global png_libpng_ver[] array from 12 to 18 chars. |
+ Made global png_libpng_ver[], png_sig[] and png_pass_*[] arrays const. |
+ Removed duplicate png_crc_finish() from png_handle_bKGD() function. |
+ Added a warning when application calls png_read_update_info() multiple times. |
+ Revised makefile.cygwin |
+ Fixed bugs in iCCP support in pngrutil.c and pngwutil.c. |
+ Replaced png_set_empty_plte_permitted() with png_permit_mng_features(). |
+ |
+Version 1.0.9beta2 [November 19, 2000] |
+ Renamed the "dll" subdirectory "projects". |
+ Added borland project files to "projects" subdirectory. |
+ Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate. |
+ Add error message in png_set_compression_buffer_size() when malloc fails. |
+ |
+Version 1.0.9beta3 [November 23, 2000] |
+ Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project. |
+ Removed the png_flush() in pngwrite.c that crashes some applications |
+ that don't set png_output_flush_fn. |
+ Added makefile.macosx and makefile.aix to scripts directory. |
+ |
+Version 1.0.9beta4 [December 1, 2000] |
+ Change png_chunk_warning to png_warning in png_check_keyword(). |
+ Increased the first part of msg buffer from 16 to 18 in png_chunk_error(). |
+ |
+Version 1.0.9beta5 [December 15, 2000] |
+ Added support for filter method 64 (for PNG datastreams embedded in MNG). |
+ |
+Version 1.0.9beta6 [December 18, 2000] |
+ Revised png_set_filter() to accept filter method 64 when appropriate. |
+ Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to |
+ help prevent applications from using MNG features in PNG datastreams. |
+ Added png_permit_mng_features() function. |
+ Revised libpng.3/libpng.txt. Changed "filter type" to "filter method". |
+ |
+Version 1.0.9rc1 [December 23, 2000] |
+ Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c |
+ Fixed error handling of unknown compression type in png_decompress_chunk(). |
+ In pngconf.h, define __cdecl when _MSC_VER is defined. |
+ |
+Version 1.0.9beta7 [December 28, 2000] |
+ Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places. |
+ Revised memory management in png_set_hIST and png_handle_hIST in a backward |
+ compatible manner. PLTE and tRNS were revised similarly. |
+ Revised the iCCP chunk reader to ignore trailing garbage. |
+ |
+Version 1.0.9beta8 [January 12, 2001] |
+ Moved pngasmrd.h into pngconf.h. |
+ Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop. |
+ |
+Version 1.0.9beta9 [January 15, 2001] |
+ Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to |
+ wince and msvc project module definition files. |
+ Minor revision of makefile.cygwin. |
+ Fixed bug with progressive reading of narrow interlaced images in pngpread.c |
+ |
+Version 1.0.9beta10 [January 16, 2001] |
+ Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined. |
+ Fixed "png_mmx_supported" typo in project definition files. |
+ |
+Version 1.0.9beta11 [January 19, 2001] |
+ Updated makefile.sgi to make shared library. |
+ Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED |
+ by default, for the benefit of DLL forward compatibility. These will |
+ be re-enabled in version 1.2.0. |
+ |
+Version 1.0.9rc2 [January 22, 2001] |
+ Revised cygwin support. |
+ |
+Version 1.0.9 [January 31, 2001] |
+ Added check of cygwin's ALL_STATIC in pngconf.h |
+ Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos. |
+ |
+Version 1.0.10beta1 [March 14, 2001] |
+ Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc. |
+ Reformatted libpng.3 to eliminate bad line breaks. |
+ Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c |
+ Added prototype for png_mmx_support() near the top of pnggccrd.c |
+ Moved some error checking from png_handle_IHDR to png_set_IHDR. |
+ Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros. |
+ Revised png_mmx_support() function in pnggccrd.c |
+ Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c |
+ Fixed memory leak in contrib/visupng/PngFile.c |
+ Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version) |
+ Added warnings when retrieving or setting gamma=0. |
+ Increased the first part of msg buffer from 16 to 18 in png_chunk_warning(). |
+ |
+Version 1.0.10rc1 [March 23, 2001] |
+ Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy, |
+ and png_strlen. |
+ Revised png_mmx_supported() function in pnggccrd.c to return proper value. |
+ Fixed bug in progressive reading (pngpread.c) with small images (height < 8). |
+ |
+Version 1.0.10 [March 30, 2001] |
+ Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin |
+ Added beos project files (Chris Herborth) |
+ |
+Version 1.0.11beta1 [April 3, 2001] |
+ Added type casts on several png_malloc() calls (Dimitri Papadapoulos). |
+ Removed a no-longer needed AIX work-around from pngconf.h |
+ Changed several "//" single-line comments to C-style in pnggccrd.c |
+ |
+Version 1.0.11beta2 [April 11, 2001] |
+ Removed PNGAPI from several functions whose prototypes did not have PNGAPI. |
+ Updated scripts/pngos2.def |
+ |
+Version 1.0.11beta3 [April 14, 2001] |
+ Added checking the results of many instances of png_malloc() for NULL |
+ |
+Version 1.0.11beta4 [April 20, 2001] |
+ Undid the changes from version 1.0.11beta3. Added a check for NULL return |
+ from user's malloc_fn(). |
+ Removed some useless type casts of the NULL pointer. |
+ Added makefile.netbsd |
+ |
+Version 1.0.11 [April 27, 2001] |
+ Revised makefile.netbsd |
+ |
+Version 1.0.12beta1 [May 14, 2001] |
+ Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot) |
+ Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h |
+ Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings. |
+ Eliminated the png_error about apps using png_read|write_init(). Instead, |
+ libpng will reallocate the png_struct and info_struct if they are too small. |
+ This retains future binary compatibility for old applications written for |
+ libpng-0.88 and earlier. |
+ |
+Version 1.2.0beta1 [May 6, 2001] |
+ Bumped DLLNUM to 2. |
+ Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED |
+ by default. |
+ Added runtime selection of MMX features. |
+ Added png_set_strip_error_numbers function and related macros. |
+ |
+Version 1.2.0beta2 [May 7, 2001] |
+ Finished merging 1.2.0beta1 with version 1.0.11 |
+ Added a check for attempts to read or write PLTE in grayscale PNG datastreams. |
+ |
+Version 1.2.0beta3 [May 17, 2001] |
+ Enabled user memory function by default. |
+ Modified png_create_struct so it passes user mem_ptr to user memory allocator. |
+ Increased png_mng_features flag from png_byte to png_uint_32. |
+ Bumped shared-library (so-number) and dll-number to 3. |
+ |
+Version 1.2.0beta4 [June 23, 2001] |
+ Check for missing profile length field in iCCP chunk and free chunk_data |
+ in case of truncated iCCP chunk. |
+ Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc |
+ Bumped dll-number from 2 to 3 in makefile.cygwin |
+ Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly |
+ if user attempts to run it on an 8-bit display. |
+ Updated contrib/gregbook |
+ Use png_malloc instead of png_zalloc to allocate palette in pngset.c |
+ Updated makefile.ibmc |
+ Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes |
+ of png_write_oFFS width and height from png_uint_32 to png_int_32. |
+ Updated example.c |
+ Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c |
+ |
+Version 1.2.0beta5 [August 8, 2001] |
+ Revised contrib/gregbook |
+ Revised makefile.gcmmx |
+ Revised pnggccrd.c to conditionally compile some thread-unsafe code only |
+ when PNG_THREAD_UNSAFE_OK is defined. |
+ Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with |
+ value exceeding 2^bit_depth-1 |
+ Revised makefile.sgi and makefile.sggcc |
+ Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c |
+ Removed restriction that do_invert_mono only operate on 1-bit opaque files |
+ |
+Version 1.2.0 [September 1, 2001] |
+ Changed a png_warning() to png_debug() in pnggccrd.c |
+ Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC(). |
+ |
+Version 1.2.1beta1 [October 19, 2001] |
+ Revised makefile.std in contrib/pngminus |
+ Include background_1 in png_struct regardless of gamma support. |
+ Revised makefile.netbsd and makefile.macosx, added makefile.darwin. |
+ Revised example.c to provide more details about using row_callback(). |
+ |
+Version 1.2.1beta2 [October 25, 2001] |
+ Added type cast to each NULL appearing in a function call, except for |
+ WINCE functions. |
+ Added makefile.so9. |
+ |
+Version 1.2.1beta3 [October 27, 2001] |
+ Removed type casts from all NULLs. |
+ Simplified png_create_struct_2(). |
+ |
+Version 1.2.1beta4 [November 7, 2001] |
+ Revised png_create_info_struct() and png_creat_struct_2(). |
+ Added error message if png_write_info() was omitted. |
+ Type cast NULLs appearing in function calls when _NO_PROTO or |
+ PNG_TYPECAST_NULL is defined. |
+ |
+Version 1.2.1rc1 [November 24, 2001] |
+ Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL |
+ is defined. |
+ Changed typecast of "size" argument to png_size_t in pngmem.c calls to |
+ the user malloc_fn, to agree with the prototype in png.h |
+ Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev) |
+ Updated makefile.sgi to recognize LIBPATH and INCPATH. |
+ Updated various makefiles so "make clean" does not remove previous major |
+ version of the shared library. |
+ |
+Version 1.2.1rc2 [December 4, 2001] |
+ Always allocate 256-entry internal palette, hist, and trans arrays, to |
+ avoid out-of-bounds memory reference caused by invalid PNG datastreams. |
+ Added a check for prefix_length > data_length in iCCP chunk handler. |
+ |
+Version 1.2.1 [December 7, 2001] |
+ None. |
+ |
+Version 1.2.2beta1 [February 22, 2002] |
+ Fixed a bug with reading the length of iCCP profiles (Larry Reeves). |
+ Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate |
+ libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h |
+ Revised makefile.darwin to remove "-undefined suppress" option. |
+ Added checks for gamma and chromaticity values over 21474.83, which exceed |
+ the limit for PNG unsigned 32-bit integers when encoded. |
+ Revised calls to png_create_read_struct() and png_create_write_struct() |
+ for simpler debugging. |
+ Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK) |
+ |
+Version 1.2.2beta2 [February 23, 2002] |
+ Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths. |
+ Check for invalid image dimensions in png_get_IHDR. |
+ Added missing "fi;" in the install target of the SGI makefiles. |
+ Added install-static to all makefiles that make shared libraries. |
+ Always do gamma compensation when image is partially transparent. |
+ |
+Version 1.2.2beta3 [March 7, 2002] |
+ Compute background.gray and background_1.gray even when color_type is RGB |
+ in case image gets reduced to gray later. |
+ Modified shared-library makefiles to install pkgconfig/libpngNN.pc. |
+ Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown |
+ Removed unused png_write_destroy_info prototype from png.h |
+ Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case |
+ Added install-shared target to all makefiles that make shared libraries. |
+ Stopped a double free of palette, hist, and trans when not using free_me. |
+ Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64. |
+ |
+Version 1.2.2beta4 [March 8, 2002] |
+ Compute background.gray and background_1.gray even when color_type is RGB |
+ in case image gets reduced to gray later (Jason Summers). |
+ Relocated a misplaced /bin/rm in the "install-shared" makefile targets |
+ Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library. |
+ |
+Version 1.2.2beta5 [March 26, 2002] |
+ Added missing PNGAPI to several function definitions. |
+ Check for invalid bit_depth or color_type in png_get_IHDR(), and |
+ check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen). |
+ Revised iTXt support to accept NULL for lang and lang_key. |
+ Compute gamma for color components of background even when color_type is gray. |
+ Changed "()" to "{}" in scripts/libpng.pc.in. |
+ Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN |
+ Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so |
+ |
+Version 1.2.2beta6 [March 31, 2002] |
+ |
+Version 1.0.13beta1 [March 31, 2002] |
+ Prevent png_zalloc() from trying to memset memory that it failed to acquire. |
+ Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate). |
+ Ensure that the right function (user or default) is used to free the |
+ png_struct after an error in png_create_read_struct_2(). |
+ |
+Version 1.2.2rc1 [April 7, 2002] |
+ |
+Version 1.0.13rc1 [April 7, 2002] |
+ Save the ebx register in pnggccrd.c (Sami Farin) |
+ Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner). |
+ Updated makefiles to put headers in include/libpng and remove old include/*.h. |
+ |
+Version 1.2.2 [April 15, 2002] |
+ |
+Version 1.0.13 [April 15, 2002] |
+ Revised description of png_set_filter() in libpng.3/libpng.txt. |
+ Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd |
+ |
+Version 1.0.13patch01 [April 17, 2002] |
+ |
+Version 1.2.2patch01 [April 17, 2002] |
+ Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and |
+ makefile.sggcc |
+ Fixed VER -> PNGVER typo in makefile.macosx and added install-static to |
+ install |
+ Added install: target to makefile.32sunu and makefile.64sunu |
+ |
+Version 1.0.13patch03 [April 18, 2002] |
+ |
+Version 1.2.2patch03 [April 18, 2002] |
+ Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng |
+ subdirectory to libpngNN subdirectory without the full pathname. |
+ Moved generation of libpng.pc from "install" to "all" in 15 makefiles. |
+ |
+Version 1.2.3rc1 [April 28, 2002] |
+ Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos). |
+ Added $(DESTDIR) feature to 24 makefiles (Tim Mooney) |
+ Fixed bug with $prefix, should be $(prefix) in makefile.hpux. |
+ Updated cygwin-specific portion of pngconf.h and revised makefile.cygwin |
+ Added a link from libpngNN.pc to libpng.pc in 15 makefiles. |
+ Added links from include/libpngNN/*.h to include/*.h in 24 makefiles. |
+ Revised makefile.darwin to make relative links without full pathname. |
+ Added setjmp() at the end of png_create_*_struct_2() in case user forgets |
+ to put one in their application. |
+ Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and |
+ removed them from module definition files. |
+ |
+Version 1.2.3rc2 [May 1, 2002] |
+ Fixed bug in reporting number of channels in pngget.c and pngset.c, |
+ that was introduced in version 1.2.2beta5. |
+ Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(), |
+ png_default_flush(), and png_push_fill_buffer() and included them in |
+ module definition files. |
+ Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles. |
+ |
+Version 1.2.3rc3 [May 1, 2002] |
+ Revised prototype for png_default_flush() |
+ Remove old libpng.pc and libpngNN.pc before installing new ones. |
+ |
+Version 1.2.3rc4 [May 2, 2002] |
+ Typos in *.def files (png_default_read|write -> png_default_read|write_data) |
+ In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc |
+ Added libpng-config and libpngNN-config and modified makefiles to install |
+ them. |
+ Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles |
+ Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp |
+ |
+Version 1.2.3rc5 [May 11, 2002] |
+ Changed "error" and "message" in prototypes to "error_message" and |
+ "warning_message" to avoid namespace conflict. |
+ Revised 15 makefiles to build libpng-config from libpng-config-*.in |
+ Once more restored png_zalloc and png_zfree to regular nonexported form. |
+ Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer |
+ to nonexported form, but with PNGAPI, and removed them from module def |
+ files. |
+ |
+Version 1.2.3rc6 [May 14, 2002] |
+ Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c |
+ Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp. |
+ Removed leftover libpng-config "sed" script from four makefiles. |
+ Revised libpng-config creating script in 16 makefiles. |
+ |
+Version 1.2.3 [May 22, 2002] |
+ Revised libpng-config target in makefile.cygwin. |
+ Removed description of png_set_mem_fn() from documentation. |
+ Revised makefile.freebsd. |
+ Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR). |
+ Revised projects/msvc/README.txt |
+ Changed -lpng to -lpngNN in LDFLAGS in several makefiles. |
+ |
+Version 1.2.4beta1 [May 24, 2002] |
+ Added libpng.pc and libpng-config to "all:" target in 16 makefiles. |
+ Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH) |
+ Added missing "\" before closing double quote in makefile.gcmmx. |
+ Plugged various memory leaks; added png_malloc_warn() and png_set_text_2() |
+ functions. |
+ |
+Version 1.2.4beta2 [June 25, 2002] |
+ Plugged memory leak of png_ptr->current_text (Matt Holgate). |
+ Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison) |
+ Added -soname to the loader flags in makefile.dec, makefile.sgi, and |
+ makefile.sggcc. |
+ Added "test-installed" target to makefile.linux, makefile.gcmmx, |
+ makefile.sgi, and makefile.sggcc. |
+ |
+Version 1.2.4beta3 [June 28, 2002] |
+ Plugged memory leak of row_buf in pngtest.c when there is a png_error(). |
+ Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data. |
+ Added "test-installed" target to makefile.32sunu, makefile.64sunu, |
+ makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, |
+ makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9. |
+ |
+Version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002] |
+ Added "test-installed" target to makefile.cygwin and makefile.sco. |
+ Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro. |
+ |
+Version 1.2.4 and 1.0.14 [July 8, 2002] |
+ Changed png_warning() to png_error() when width is too large to process. |
+ |
+Version 1.2.4patch01 [July 20, 2002] |
+ Revised makefile.cygwin to use DLL number 12 instead of 13. |
+ |
+Version 1.2.5beta1 [August 6, 2002] |
+ Added code to contrib/gregbook/readpng2.c to ignore unused chunks. |
+ Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11) |
+ Removed some stray *.o files from contrib/gregbook. |
+ Changed png_error() to png_warning() about "Too much data" in pngpread.c |
+ and about "Extra compressed data" in pngrutil.c. |
+ Prevent png_ptr->pass from exceeding 7 in png_push_finish_row(). |
+ Updated makefile.hpgcc |
+ Updated png.c and pnggccrd.c handling of return from png_mmx_support() |
+ |
+Version 1.2.5beta2 [August 15, 2002] |
+ Only issue png_warning() about "Too much data" in pngpread.c when avail_in |
+ is nonzero. |
+ Updated makefiles to install a separate libpng.so.3 with its own rpath. |
+ |
+Version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002] |
+ Revised makefiles to not remove previous minor versions of shared libraries. |
+ |
+Version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002] |
+ Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared |
+ library loader directive. |
+ Added missing "$OBJSDLL" line to makefile.gcmmx. |
+ Added missing "; fi" to makefile.32sunu. |
+ |
+Version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002] |
+ Revised libpng-config script. |
+ |
+Version 1.2.5 and 1.0.15 [October 3, 2002] |
+ Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux, |
+ and makefile.aix. |
+ Relocated two misplaced PNGAPI lines in pngtest.c |
+ |
+Version 1.2.6beta1 [October 22, 2002] |
+ Commented out warning about uninitialized mmx_support in pnggccrd.c. |
+ Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h. |
+ Relocated two more misplaced PNGAPI lines in pngtest.c |
+ Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams, |
+ introduced in version 1.0.2. |
+ Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu. |
+ |
+Version 1.2.6beta2 [November 1, 2002] |
+ Added libpng-config "--ldopts" output. |
+ Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)" |
+ in makefiles. |
+ |
+Version 1.2.6beta3 [July 18, 2004] |
+ Reverted makefile changes from version 1.2.6beta2 and some of the changes |
+ from version 1.2.6beta1; these will be postponed until version 1.2.7. |
+ Version 1.2.6 is going to be a simple bugfix release. |
+ Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile. |
+ Fixed potential overrun in pngerror.c by using strncpy instead of memcpy. |
+ Added "#!/bin/sh" at the top of configure, for recognition of the |
+ 'x' flag under Cygwin (Cosmin). |
+ Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin). |
+ Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin). |
+ Fixed the special memory handler for Borland C under DOS, in pngmem.c |
+ (Cosmin). |
+ Removed some spurious assignments in pngrutil.c (Cosmin). |
+ Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings |
+ on 16-bit platforms (Cosmin). |
+ Enclosed shift op expressions in parentheses, to silence warnings (Cosmin). |
+ Used proper type png_fixed_point, to avoid problems on 16-bit platforms, |
+ in png_handle_sRGB() (Cosmin). |
+ Added compression_type to png_struct, and optimized the window size |
+ inside the deflate stream (Cosmin). |
+ Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin). |
+ Fixed handling of unknown chunks that come after IDAT (Cosmin). |
+ Allowed png_error() and png_warning() to work even if png_ptr == NULL |
+ (Cosmin). |
+ Replaced row_info->rowbytes with row_bytes in png_write_find_filter() |
+ (Cosmin). |
+ Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre). |
+ Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded |
+ values in png.c (Simon-Pierre, Cosmin). |
+ Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre). |
+ Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc |
+ (Simon-Pierre). |
+ Moved the definition of PNG_HEADER_VERSION_STRING near the definitions |
+ of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin). |
+ Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin). |
+ Updated scripts/makefile.vc(a)win32 (Cosmin). |
+ Updated the MSVC project (Simon-Pierre, Cosmin). |
+ Updated the Borland C++ Builder project (Cosmin). |
+ Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin). |
+ Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin). |
+ Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin). |
+ Added extra guard around inclusion of Turbo C memory headers, in pngconf.h |
+ (Cosmin). |
+ Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to |
+ projects/cbuilder5/ (Cosmin). |
+ Moved projects/visualc6/png32ms.def to scripts/pngw32.def, |
+ and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin). |
+ Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin). |
+ Changed line endings to DOS style in cbuilder5 and visualc6 files, even |
+ in the tar.* distributions (Cosmin). |
+ Updated contrib/visupng/VisualPng.dsp (Cosmin). |
+ Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin). |
+ Added a separate distribution with "configure" and supporting files (Junichi). |
+ |
+Version 1.2.6beta4 [July 28, 2004] |
+ Added user ability to change png_size_t via a PNG_SIZE_T macro. |
+ Added png_sizeof() and png_convert_size() functions. |
+ Added PNG_SIZE_MAX (maximum value of a png_size_t variable. |
+ Added check in png_malloc_default() for (size_t)size != (png_uint_32)size |
+ which would indicate an overflow. |
+ Changed sPLT failure action from png_error to png_warning and abandon chunk. |
+ Changed sCAL and iCCP failures from png_error to png_warning and abandon. |
+ Added png_get_uint_31(png_ptr, buf) function. |
+ Added PNG_UINT_32_MAX macro. |
+ Renamed PNG_MAX_UINT to PNG_UINT_31_MAX. |
+ Made png_zalloc() issue a png_warning and return NULL on potential |
+ overflow. |
+ Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x |
+ Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4. |
+ Revised Borland portion of png_malloc() to return NULL or issue |
+ png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK. |
+ Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove |
+ sequential read support. |
+ Added some "#if PNG_WRITE_SUPPORTED" blocks. |
+ Added #ifdef to remove some redundancy in png_malloc_default(). |
+ Use png_malloc instead of png_zalloc to allocate the pallete. |
+ |
+Version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004] |
+ Fixed buffer overflow vulnerability (CVE-2004-0597) in png_handle_tRNS(). |
+ Fixed NULL dereference vulnerability (CVE-2004-0598) in png_handle_iCCP(). |
+ Fixed integer overflow vulnerability (CVE-2004-0599) in png_read_png(). |
+ Fixed some harmless bugs in png_handle_sBIT, etc, that would cause |
+ duplicate chunk types to go undetected. |
+ Fixed some timestamps in the -config version |
+ Rearranged order of processing of color types in png_handle_tRNS(). |
+ Added ROWBYTES macro to calculate rowbytes without integer overflow. |
+ Updated makefile.darwin and removed makefile.macosx from scripts directory. |
+ Imposed default one million column, one-million row limits on the image |
+ dimensions, and added png_set_user_limits() function to override them. |
+ Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro. |
+ Fixed wrong cast of returns from png_get_user_width|height_max(). |
+ Changed some "keep the compiler happy" from empty statements to returns, |
+ Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution |
+ |
+Version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004] |
+ Revised makefile.darwin and makefile.solaris. Removed makefile.macosx. |
+ Revised pngtest's png_debug_malloc() to use png_malloc() instead of |
+ png_malloc_default() which is not supposed to be exported. |
+ Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in |
+ pngpread.c. Bug was introduced in 1.2.6rc1. |
+ Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1. |
+ Fixed old bug in RGB to Gray transformation. |
+ Fixed problem with 64-bit compilers by casting arguments to abs() |
+ to png_int_32. |
+ Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9). |
+ Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin) |
+ Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles. |
+ Added code to update the row_info->colortype in png_do_read_filler() (MSB). |
+ |
+Version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004] |
+ Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid |
+ trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro. |
+ Revised documentation of png_set_keep_unknown_chunks(). |
+ Check handle_as_unknown status in pngpread.c, as in pngread.c previously. |
+ Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h |
+ Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c |
+ |
+Version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004] |
+ Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of |
+ "pinfo" was out of place). |
+ |
+Version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004] |
+ Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED |
+ section of png.h where they were inadvertently placed in version rc3. |
+ |
+Version 1.2.6 and 1.0.16 [August 15, 2004] |
+ Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1. |
+ |
+Version 1.2.7beta1 [August 26, 2004] |
+ Removed unused pngasmrd.h file. |
+ Removed references to uu.net for archived files. Added references to |
+ PNG Spec (second edition) and the PNG ISO/IEC Standard. |
+ Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR. |
+ Fixed bug with "optimized window size" in the IDAT datastream, that |
+ causes libpng to write PNG files with incorrect zlib header bytes. |
+ |
+Version 1.2.7beta2 [August 28, 2004] |
+ Fixed bug with sCAL chunk and big-endian machines (David Munro). |
+ Undid new code added in 1.2.6rc2 to update the color_type in |
+ png_set_filler(). |
+ Added png_set_add_alpha() that updates color type. |
+ |
+Version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004] |
+ Revised png_set_strip_filler() to not remove alpha if color_type has alpha. |
+ |
+Version 1.2.7 and 1.0.17 [September 12, 2004] |
+ Added makefile.hp64 |
+ Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin |
+ |
+Version 1.2.8beta1 [November 1, 2004] |
+ Fixed bug in png_text_compress() that would fail to complete a large block. |
+ Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during |
+ strip alpha operation in png_do_strip_filler(). |
+ Added PNG_1_2_X definition in pngconf.h |
+ Use #ifdef to comment out png_info_init in png.c and png_read_init in |
+ pngread.c (as of 1.3.0) |
+ |
+Version 1.2.8beta2 [November 2, 2004] |
+ Reduce color_type to a nonalpha type after strip alpha operation in |
+ png_do_strip_filler(). |
+ |
+Version 1.2.8beta3 [November 3, 2004] |
+ Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM |
+ |
+Version 1.2.8beta4 [November 12, 2004] |
+ Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin). |
+ Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin). |
+ Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection |
+ of data type in deflate (Cosmin). |
+ Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of |
+ PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. |
+ |
+Version 1.2.8beta5 [November 20, 2004] |
+ Use png_ptr->flags instead of png_ptr->transformations to pass |
+ PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI |
+ compatibility. |
+ Revised handling of SPECIALBUILD, PRIVATEBUILD, |
+ PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING. |
+ |
+Version 1.2.8rc1 [November 24, 2004] |
+ Moved handling of BUILD macros from pngconf.h to png.h |
+ Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently |
+ omitted from beta5. |
+ Revised scripts/pngw32.rc |
+ Despammed mailing addresses by masking "@" with "at". |
+ Inadvertently installed a supposedly faster test version of pngrutil.c |
+ |
+Version 1.2.8rc2 [November 26, 2004] |
+ Added two missing "\" in png.h |
+ Change tests in pngread.c and pngpread.c to |
+ if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA)) |
+ png_do_read_transformations(png_ptr); |
+ |
+Version 1.2.8rc3 [November 28, 2004] |
+ Reverted pngrutil.c to version libpng-1.2.8beta5. |
+ Added scripts/makefile.elf with supporting code in pngconf.h for symbol |
+ versioning (John Bowler). |
+ |
+Version 1.2.8rc4 [November 29, 2004] |
+ Added projects/visualc7 (Simon-pierre). |
+ |
+Version 1.2.8rc5 [November 29, 2004] |
+ Fixed new typo in scripts/pngw32.rc |
+ |
+Version 1.2.8 [December 3, 2004] |
+ Removed projects/visualc7, added projects/visualc71. |
+ |
+Version 1.2.9beta1 [February 21, 2006] |
+ Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints |
+ Revised man page and libpng.txt to make it clear that one should not call |
+ png_read_end or png_write_end after png_read_png or png_write_png. |
+ Updated references to png-mng-implement mailing list. |
+ Fixed an incorrect typecast in pngrutil.c |
+ Added PNG_NO_READ_SUPPORTED conditional for making a write-only library. |
+ Added PNG_NO_WRITE_INTERLACING_SUPPORTED conditional. |
+ Optimized alpha-inversion loops in pngwtran.c |
+ Moved test for nonzero gamma outside of png_build_gamma_table() in pngrtran.c |
+ Make sure num_trans is <= 256 before copying data in png_set_tRNS(). |
+ Make sure num_palette is <= 256 before copying data in png_set_PLTE(). |
+ Interchanged order of write_swap_alpha and write_invert_alpha transforms. |
+ Added parentheses in the definition of PNG_LIBPNG_BUILD_TYPE (Cosmin). |
+ Optimized zlib window flag (CINFO) in contrib/pngsuite/*.png (Cosmin). |
+ Updated scripts/makefile.bc32 for Borland C++ 5.6 (Cosmin). |
+ Exported png_get_uint_32, png_save_uint_32, png_get_uint_16, png_save_uint_16, |
+ png_get_int_32, png_save_int_32, png_get_uint_31 (Cosmin). |
+ Added type cast (png_byte) in png_write_sCAL() (Cosmin). |
+ Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin). |
+ Default iTXt support was inadvertently enabled. |
+ |
+Version 1.2.9beta2 [February 21, 2006] |
+ Check for png_rgb_to_gray and png_gray_to_rgb read transformations before |
+ checking for png_read_dither in pngrtran.c |
+ Revised checking of chromaticity limits to accommodate extended RGB |
+ colorspace (John Denker). |
+ Changed line endings in some of the project files to CRLF, even in the |
+ "Unix" tar distributions (Cosmin). |
+ Made png_get_int_32 and png_save_int_32 always available (Cosmin). |
+ Updated scripts/pngos2.def, scripts/pngw32.def and projects/wince/png32ce.def |
+ with the newly exported functions. |
+ Eliminated distributions without the "configure" script. |
+ Updated INSTALL instructions. |
+ |
+Version 1.2.9beta3 [February 24, 2006] |
+ Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp |
+ Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler) |
+ Removed reference to pngasmrd.h from Makefile.am |
+ Renamed CHANGES to ChangeLog. |
+ Renamed LICENSE to COPYING. |
+ Renamed ANNOUNCE to NEWS. |
+ Created AUTHORS file. |
+ |
+Version 1.2.9beta4 [March 3, 2006] |
+ Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac |
+ Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING. |
+ Removed newline from the end of some error and warning messages. |
+ Removed test for sqrt() from configure.ac and configure. |
+ Made swap tables in pngtrans.c PNG_CONST (Carlo Bramix). |
+ Disabled default iTXt support that was inadvertently enabled in |
+ libpng-1.2.9beta1. |
+ Added "OS2" to list of systems that don't need underscores, in pnggccrd.c |
+ Removed libpng version and date from *.c files. |
+ |
+Version 1.2.9beta5 [March 4, 2006] |
+ Removed trailing blanks from source files. |
+ Put version and date of latest change in each source file, and changed |
+ copyright year accordingly. |
+ More cleanup of configure.ac, Makefile.am, and associated scripts. |
+ Restored scripts/makefile.elf which was inadvertently deleted. |
+ |
+Version 1.2.9beta6 [March 6, 2006] |
+ Fixed typo (RELEASE) in configuration files. |
+ |
+Version 1.2.9beta7 [March 7, 2006] |
+ Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am |
+ Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s() |
+ in png.h. |
+ Updated makefile.elf as suggested by debian. |
+ Made cosmetic changes to some makefiles, adding LN_SF and other macros. |
+ Made some makefiles accept "exec_prefix". |
+ |
+Version 1.2.9beta8 [March 9, 2006] |
+ Fixed some "#if defined (..." which should be "#if defined(..." |
+ Bug introduced in libpng-1.2.8. |
+ Fixed inconsistency in definition of png_default_read_data() |
+ Restored blank that was lost from makefile.sggcc "clean" target in beta7. |
+ Revised calculation of "current" and "major" for irix in ltmain.sh |
+ Changed "mkdir" to "MKDIR_P" in some makefiles. |
+ Separated PNG_EXPAND and PNG_EXPAND_tRNS. |
+ Added png_set_expand_gray_1_2_4_to_8() and deprecated |
+ png_set_gray_1_2_4_to_8() which also expands tRNS to alpha. |
+ |
+Version 1.2.9beta9 [March 10, 2006] |
+ Include "config.h" in pngconf.h when available. |
+ Added some checks for NULL png_ptr or NULL info_ptr (timeless) |
+ |
+Version 1.2.9beta10 [March 20, 2006] |
+ Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin) |
+ Made pnggccrd.c PIC-compliant (Christian Aichinger). |
+ Added makefile.mingw (Wolfgang Glas). |
+ Revised pngconf.h MMX checking. |
+ |
+Version 1.2.9beta11 [March 22, 2006] |
+ Fixed out-of-order declaration in pngwrite.c that was introduced in beta9 |
+ Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros. |
+ |
+Version 1.2.9rc1 [March 31, 2006] |
+ Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin). |
+ Removed nonsensical assertion check from pngtest.c (Cosmin). |
+ |
+Version 1.2.9 [April 14, 2006] |
+ Revised makefile.beos and added "none" selector in ltmain.sh |
+ |
+Version 1.2.10beta1 [April 15, 2006] |
+ Renamed "config.h" to "png_conf.h" and revised Makefile.am to add |
+ -DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h |
+ to include png_conf.h only when PNG_BUILDING_LIBPNG is defined. |
+ |
+Version 1.2.10beta2 [April 15, 2006] |
+ Manually updated Makefile.in and configure. Changed png_conf.h.in |
+ back to config.h. |
+ |
+Version 1.2.10beta3 [April 15, 2006] |
+ Change png_conf.h back to config.h in pngconf.h. |
+ |
+Version 1.2.10beta4 [April 16, 2006] |
+ Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*. |
+ |
+Version 1.2.10beta5 [April 16, 2006] |
+ Added a configure check for compiling assembler code in pnggccrd.c |
+ |
+Version 1.2.10beta6 [April 17, 2006] |
+ Revised the configure check for pnggccrd.c |
+ Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@ |
+ Added @LIBPNG_DEFINES@ to arguments when building libpng.sym |
+ |
+Version 1.2.10beta7 [April 18, 2006] |
+ Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles. |
+ |
+Version 1.2.10rc1 [April 19, 2006] |
+ Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD |
+ Fixed "LN_FS" typo in makefile.sco and makefile.solaris. |
+ |
+Version 1.2.10rc2 [April 20, 2006] |
+ Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE |
+ in configure.ac and configure |
+ Made the configure warning about versioned symbols less arrogant. |
+ |
+Version 1.2.10rc3 [April 21, 2006] |
+ Added a note in libpng.txt that png_set_sig_bytes(8) can be used when |
+ writing an embedded PNG without the 8-byte signature. |
+ Revised makefiles and configure to avoid making links to libpng.so.* |
+ |
+Version 1.2.10 [April 23, 2006] |
+ Reverted configure to "rc2" state. |
+ |
+Version 1.2.11beta1 [May 31, 2006] |
+ scripts/libpng.pc.in contained "configure" style version info and would |
+ not work with makefiles. |
+ The shared-library makefiles were linking to libpng.so.0 instead of |
+ libpng.so.3 compatibility as the library. |
+ |
+Version 1.2.11beta2 [June 2, 2006] |
+ Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid |
+ buffer overflow. |
+ Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb) |
+ |
+Version 1.2.11beta3 [June 5, 2006] |
+ Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin). |
+ Removed the accidental leftover Makefile.in~ (Cosmin). |
+ Avoided potential buffer overflow and optimized buffer in |
+ png_write_sCAL(), png_write_sCAL_s() (Cosmin). |
+ Removed the include directories and libraries from CFLAGS and LDFLAGS |
+ in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin). |
+ |
+Version 1.2.11beta4 [June 6, 2006] |
+ Allow zero-length IDAT chunks after the entire zlib datastream, but not |
+ after another intervening chunk type. |
+ |
+Version 1.0.19rc1, 1.2.11rc1 [June 13, 2006] |
+ Deleted extraneous square brackets from [config.h] in configure.ac |
+ |
+Version 1.0.19rc2, 1.2.11rc2 [June 14, 2006] |
+ Added prototypes for PNG_INCH_CONVERSIONS functions to png.h |
+ Revised INSTALL and autogen.sh |
+ Fixed typo in several makefiles (-W1 should be -Wl) |
+ Added typedef for png_int_32 and png_uint_32 on 64-bit systems. |
+ |
+Version 1.0.19rc3, 1.2.11rc3 [June 15, 2006] |
+ Removed the new typedefs for 64-bit systems (delay until version 1.4.0) |
+ Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid |
+ reading out of bounds. |
+ |
+Version 1.0.19rc4, 1.2.11rc4 [June 15, 2006] |
+ Really removed the new typedefs for 64-bit systems. |
+ |
+Version 1.0.19rc5, 1.2.11rc5 [June 22, 2006] |
+ Removed png_sig_bytes entry from scripts/pngw32.def |
+ |
+Version 1.0.19, 1.2.11 [June 26, 2006] |
+ None. |
+ |
+Version 1.0.20, 1.2.12 [June 27, 2006] |
+ Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid |
+ buffer overflow. |
+ |
+Version 1.2.13beta1 [October 2, 2006] |
+ Removed AC_FUNC_MALLOC from configure.ac |
+ Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h |
+ Change "logical" to "bitwise" throughout documentation. |
+ Detect and fix attempt to write wrong iCCP profile length (CVE-2006-7244) |
+ |
+Version 1.0.21, 1.2.13 [November 14, 2006] |
+ Fix potential buffer overflow in sPLT chunk handler. |
+ Fix Makefile.am to not try to link to noexistent files. |
+ Check all exported functions for NULL png_ptr. |
+ |
+Version 1.2.14beta1 [November 17, 2006] |
+ Relocated three misplaced tests for NULL png_ptr. |
+ Built Makefile.in with automake-1.9.6 instead of 1.9.2. |
+ Build configure with autoconf-2.60 instead of 2.59 |
+ |
+Version 1.2.14beta2 [November 17, 2006] |
+ Added some typecasts in png_zalloc(). |
+ |
+Version 1.2.14rc1 [November 20, 2006] |
+ Changed "strtod" to "png_strtod" in pngrutil.c |
+ |
+Version 1.0.22, 1.2.14 [November 27, 2006] |
+ Added missing "$(srcdir)" in Makefile.am and Makefile.in |
+ |
+Version 1.2.15beta1 [December 3, 2006] |
+ Generated configure with autoconf-2.61 instead of 2.60 |
+ Revised configure.ac to update libpng.pc and libpng-config. |
+ |
+Version 1.2.15beta2 [December 3, 2006] |
+ Always export MMX asm functions, just stubs if not building pnggccrd.c |
+ |
+Version 1.2.15beta3 [December 4, 2006] |
+ Add "png_bytep" typecast to profile while calculating length in pngwutil.c |
+ |
+Version 1.2.15beta4 [December 7, 2006] |
+ Added scripts/CMakeLists.txt |
+ Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta |
+ |
+Version 1.2.15beta5 [December 7, 2006] |
+ Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c |
+ Revised scripts/CMakeLists.txt |
+ |
+Version 1.2.15beta6 [December 13, 2006] |
+ Revised scripts/CMakeLists.txt and configure.ac |
+ |
+Version 1.2.15rc1 [December 18, 2006] |
+ Revised scripts/CMakeLists.txt |
+ |
+Version 1.2.15rc2 [December 21, 2006] |
+ Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers. |
+ Added scripts/makefile.nommx |
+ |
+Version 1.2.15rc3 [December 25, 2006] |
+ Fixed shared library numbering error that was introduced in 1.2.15beta6. |
+ |
+Version 1.2.15rc4 [December 27, 2006] |
+ Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set. |
+ |
+Version 1.2.15rc5 [December 31, 2006] |
+ Revised handling of rgb_to_gray. |
+ |
+Version 1.2.15 [January 5, 2007] |
+ Added some (unsigned long) typecasts in pngtest.c to avoid printing errors. |
+ |
+Version 1.2.16beta1 [January 6, 2007] |
+ Fix bugs in makefile.nommx |
+ |
+Version 1.2.16beta2 [January 16, 2007] |
+ Revised scripts/CMakeLists.txt |
+ |
+Version 1.2.16 [January 31, 2007] |
+ No changes. |
+ |
+Version 1.2.17beta1 [March 6, 2007] |
+ Revised scripts/CMakeLists.txt to install both shared and static libraries. |
+ Deleted a redundant line from pngset.c. |
+ |
+Version 1.2.17beta2 [April 26, 2007] |
+ Relocated misplaced test for png_ptr == NULL in pngpread.c |
+ Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN |
+ flags. |
+ Changed remaining instances of PNG_ASSEMBLER_* to PNG_MMX_* |
+ Added pngerror() when write_IHDR fails in deflateInit2(). |
+ Added "const" to some array declarations. |
+ Mention examples of libpng usage in the libpng*.txt and libpng.3 documents. |
+ |
+Version 1.2.17rc1 [May 4, 2007] |
+ No changes. |
+ |
+Version 1.2.17rc2 [May 8, 2007] |
+ Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications |
+ calling set_unknown_chunk_location() need them. |
+ Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in |
+ png_set_expand_gray_1_2_4_to_8(). |
+ Added png_ptr->unknown_chunk to hold working unknown chunk data, so it |
+ can be free'ed in case of error. Revised unknown chunk handling in |
+ pngrutil.c and pngpread.c to use this structure. |
+ |
+Version 1.2.17rc3 [May 8, 2007] |
+ Revised symbol-handling in configure script. |
+ |
+Version 1.2.17rc4 [May 10, 2007] |
+ Revised unknown chunk handling to avoid storing unknown critical chunks. |
+ |
+Version 1.0.25 [May 15, 2007] |
+Version 1.2.17 [May 15, 2007] |
+ Added "png_ptr->num_trans=0" before error return in png_handle_tRNS, |
+ to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664) |
+ |
+Version 1.0.26 [May 15, 2007] |
+Version 1.2.18 [May 15, 2007] |
+ Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script |
+ |
+Version 1.2.19beta1 [May 18, 2007] |
+ Changed "const static" to "static PNG_CONST" everywhere, mostly undoing |
+ change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST" |
+ Changed some handling of unused parameters, to avoid compiler warnings. |
+ "if (unused == NULL) return;" becomes "unused = unused". |
+ |
+Version 1.2.19beta2 [May 18, 2007] |
+ Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier) |
+ |
+Version 1.2.19beta3 [May 19, 2007] |
+ Add some "png_byte" typecasts in png_check_keyword() and write new_key |
+ instead of key in zTXt chunk (Kevin Ryde). |
+ |
+Version 1.2.19beta4 [May 21, 2007] |
+ Add png_snprintf() function and use it in place of sprint() for improved |
+ defense against buffer overflows. |
+ |
+Version 1.2.19beta5 [May 21, 2007] |
+ Fixed png_handle_tRNS() to only use the valid bits of tRNS value. |
+ Changed handling of more unused parameters, to avoid compiler warnings. |
+ Removed some PNG_CONST in pngwutil.c to avoid compiler warnings. |
+ |
+Version 1.2.19beta6 [May 22, 2007] |
+ Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c |
+ Added a special "_MSC_VER" case that defines png_snprintf to _snprintf |
+ |
+Version 1.2.19beta7 [May 22, 2007] |
+ Squelched png_squelch_warnings() in pnggccrd.c and added |
+ an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused |
+ the warnings that png_squelch_warnings was squelching. |
+ |
+Version 1.2.19beta8 [May 22, 2007] |
+ Removed __MMX__ from test in pngconf.h. |
+ |
+Version 1.2.19beta9 [May 23, 2007] |
+ Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro. |
+ Revised png_squelch_warnings() so it might work. |
+ Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86. |
+ |
+Version 1.2.19beta10 [May 24, 2007] |
+ Resquelched png_squelch_warnings(), use "__attribute__((used))" instead. |
+ |
+Version 1.4.0beta1 [April 20, 2006] |
+ Enabled iTXt support (changes png_struct, thus requires so-number change). |
+ Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED |
+ Eliminated PNG_1_0_X and PNG_1_2_X macros. |
+ Removed deprecated functions png_read_init, png_write_init, png_info_init, |
+ png_permit_empty_plte, png_set_gray_1_2_4_to_8, png_check_sig, and |
+ removed the deprecated macro PNG_MAX_UINT. |
+ Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h |
+ Removed many WIN32_WCE #ifdefs (Cosmin). |
+ Reduced dependency on C-runtime library when on Windows (Simon-Pierre) |
+ Replaced sprintf() with png_sprintf() (Simon-Pierre) |
+ |
+Version 1.4.0beta2 [April 20, 2006] |
+ Revised makefiles and configure to avoid making links to libpng.so.* |
+ Moved some leftover MMX-related defines from pngconf.h to pngintrn.h |
+ Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def |
+ |
+Version 1.4.0beta3 [May 10, 2006] |
+ Updated scripts/pngw32.def to comment out MMX functions. |
+ Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros. |
+ Scripts/libpng.pc.in contained "configure" style version info and would |
+ not work with makefiles. |
+ Revised pngconf.h and added pngconf.h.in, so makefiles and configure can |
+ pass defines to libpng and applications. |
+ |
+Version 1.4.0beta4 [May 11, 2006] |
+ Revised configure.ac, Makefile.am, and many of the makefiles to write |
+ their defines in pngconf.h. |
+ |
+Version 1.4.0beta5 [May 15, 2006] |
+ Added a missing semicolon in Makefile.am and Makefile.in |
+ Deleted extraneous square brackets from configure.ac |
+ |
+Version 1.4.0beta6 [June 2, 2006] |
+ Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid |
+ buffer overflow. |
+ Changed sonum from 0 to 1. |
+ Removed unused prototype for png_check_sig() from png.h |
+ |
+Version 1.4.0beta7 [June 16, 2006] |
+ Exported png_write_sig (Cosmin). |
+ Optimized buffer in png_handle_cHRM() (Cosmin). |
+ Set pHYs = 2835 x 2835 pixels per meter, and added |
+ sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin). |
+ Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error(). |
+ Added typedef for png_int_32 and png_uint_32 on 64-bit systems. |
+ Added "(unsigned long)" typecast on png_uint_32 variables in printf lists. |
+ |
+Version 1.4.0beta8 [June 22, 2006] |
+ Added demonstration of user chunk support in pngtest.c, to support the |
+ public sTER chunk and a private vpAg chunk. |
+ |
+Version 1.4.0beta9 [July 3, 2006] |
+ Removed ordinals from scripts/pngw32.def and removed png_info_int and |
+ png_set_gray_1_2_4_to_8 entries. |
+ Inline call of png_get_uint_32() in png_get_uint_31(). |
+ Use png_get_uint_31() to get vpAg width and height in pngtest.c |
+ Removed WINCE and Netware projects. |
+ Removed standalone Y2KINFO file. |
+ |
+Version 1.4.0beta10 [July 12, 2006] |
+ Eliminated automatic copy of pngconf.h to pngconf.h.in from configure and |
+ some makefiles, because it was not working reliably. Instead, distribute |
+ pngconf.h.in along with pngconf.h and cause configure and some of the |
+ makefiles to update pngconf.h from pngconf.h.in. |
+ Added pngconf.h to DEPENDENCIES in Makefile.am |
+ |
+Version 1.4.0beta11 [August 19, 2006] |
+ Removed AC_FUNC_MALLOC from configure.ac. |
+ Added a warning when writing iCCP profile with mismatched profile length. |
+ Patched pnggccrd.c to assemble on x86_64 platforms. |
+ Moved chunk header reading into a separate function png_read_chunk_header() |
+ in pngrutil.c. The chunk header (len+sig) is now serialized in a single |
+ operation (Cosmin). |
+ Implemented support for I/O states. Added png_ptr member io_state, and |
+ functions png_get_io_chunk_name() and png_get_io_state() in pngget.c |
+ (Cosmin). |
+ Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin). |
+ Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin). |
+ Removed the include directories and libraries from CFLAGS and LDFLAGS |
+ in scripts/makefile.gcc (Cosmin). |
+ Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin). |
+ Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin). |
+ Added pngintrn.h to the Visual C++ projects (Cosmin). |
+ Removed scripts/list (Cosmin). |
+ Updated copyright year in scripts/pngwin.def (Cosmin). |
+ Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin). |
+ Disallowed the user to redefine png_size_t, and enforced a consistent use |
+ of png_size_t across libpng (Cosmin). |
+ Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends |
+ to png_size_t (Cosmin). |
+ Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin). |
+ Removed some unnecessary type casts (Cosmin). |
+ Changed prototype of png_get_compression_buffer_size() and |
+ png_set_compression_buffer_size() to work with png_size_t instead of |
+ png_uint_32 (Cosmin). |
+ Removed png_memcpy_check() and png_memset_check() (Cosmin). |
+ Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin). |
+ Clarified that png_zalloc() does not clear the allocated memory, |
+ and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin). |
+ Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in |
+ pngconf.h, and used it in all memory allocation functions (Cosmin). |
+ Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file |
+ mentioning that the symbols declared in that file are private, and |
+ updated the scripts and the Visual C++ projects accordingly (Cosmin). |
+ Removed circular references between pngconf.h and pngconf.h.in in |
+ scripts/makefile.vc*win32 (Cosmin). |
+ Removing trailing '.' from the warning and error messages (Cosmin). |
+ Added pngdefs.h that is built by makefile or configure, instead of |
+ pngconf.h.in (Glenn). |
+ Detect and fix attempt to write wrong iCCP profile length. |
+ |
+Version 1.4.0beta12 [October 19, 2006] |
+ Changed "logical" to "bitwise" in the documentation. |
+ Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h |
+ Add a typecast to stifle compiler warning in pngrutil.c |
+ |
+Version 1.4.0beta13 [November 10, 2006] |
+ Fix potential buffer overflow in sPLT chunk handler. |
+ Fix Makefile.am to not try to link to noexistent files. |
+ |
+Version 1.4.0beta14 [November 15, 2006] |
+ Check all exported functions for NULL png_ptr. |
+ |
+Version 1.4.0beta15 [November 17, 2006] |
+ Relocated two misplaced tests for NULL png_ptr. |
+ Built Makefile.in with automake-1.9.6 instead of 1.9.2. |
+ Build configure with autoconf-2.60 instead of 2.59 |
+ Add "install: all" in Makefile.am so "configure; make install" will work. |
+ |
+Version 1.4.0beta16 [November 17, 2006] |
+ Added a typecast in png_zalloc(). |
+ |
+Version 1.4.0beta17 [December 4, 2006] |
+ Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c |
+ Add "png_bytep" typecast to profile while calculating length in pngwutil.c |
+ |
+Version 1.4.0beta18 [December 7, 2006] |
+ Added scripts/CMakeLists.txt |
+ |
+Version 1.4.0beta19 [May 16, 2007] |
+ Revised scripts/CMakeLists.txt |
+ Rebuilt configure and Makefile.in with newer tools. |
+ Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers. |
+ Added scripts/makefile.nommx |
+ |
+Version 1.4.0beta20 [July 9, 2008] |
+ Moved several PNG_HAVE_* macros from pngpriv.h to png.h because applications |
+ calling set_unknown_chunk_location() need them. |
+ Moved several macro definitions from pngpriv.h to pngconf.h |
+ Merge with changes to the 1.2.X branch, as of 1.2.30beta04. |
+ Deleted all use of the MMX assembler code and Intel-licensed optimizations. |
+ Revised makefile.mingw |
+ |
+Version 1.4.0beta21 [July 21, 2008] |
+ Moved local array "chunkdata" from pngrutil.c to the png_struct, so |
+ it will be freed by png_read_destroy() in case of a read error (Kurt |
+ Christensen). |
+ |
+Version 1.4.0beta22 [July 21, 2008] |
+ Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking. |
+ |
+Version 1.4.0beta23 [July 22, 2008] |
+ Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in |
+ png_decompress_chunk(). |
+ |
+Version 1.4.0beta24 [July 25, 2008] |
+ Change all remaining "chunkdata" to "png_ptr->chunkdata" in |
+ png_decompress_chunk(), and remove "chunkdata" from parameter list. |
+ Put a call to png_check_chunk_name() in png_read_chunk_header(). |
+ Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte. |
+ Removed two calls to png_check_chunk_name() 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] |
+ Reformated sources in libpng style (3-space intentation, comment format) |
+ Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG) |
+ Added sections about the git repository and our coding style to the |
+ documentation |
+ Relocated misplaced #endif in pngwrite.c, sCAL chunk handler. |
+ |
+Version 1.4.0beta60 [May 19, 2009] |
+ Conditionally compile png_read_finish_row() which is not used by |
+ progressive readers. |
+ Added contrib/pngminim/preader to demonstrate building minimal progressive |
+ decoder, based on contrib/gregbook with embedded libpng and zlib. |
+ |
+Version 1.4.0beta61 [May 20, 2009] |
+ In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there |
+ is only one makefile in those directories, and revised the README files |
+ accordingly. |
+ More reformatting of comments, mostly to capitalize sentences. |
+ |
+Version 1.4.0beta62 [June 2, 2009] |
+ Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h |
+ and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h |
+ Reformatted several remaining "else statement" into two lines. |
+ Added a section to the libpng documentation about using png_get_io_ptr() |
+ in configure scripts to detect the presence of libpng. |
+ |
+Version 1.4.0beta63 [June 15, 2009] |
+ Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR() |
+ multiple times and to specify the sample order in the tRNS chunk, |
+ because the ISO PNG specification has a typo in the tRNS table. |
+ Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to |
+ PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism |
+ available for ignoring known chunks even when not saving unknown chunks. |
+ Adopted preference for consistent use of "#ifdef" and "#ifndef" versus |
+ "#if defined()" and "if !defined()" where possible. |
+ |
+Version 1.4.0beta64 [June 24, 2009] |
+ Eliminated PNG_LEGACY_SUPPORTED code. |
+ Moved the various unknown chunk macro definitions outside of the |
+ PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks. |
+ |
+Version 1.4.0beta65 [June 26, 2009] |
+ Added a reference to the libpng license in each file. |
+ |
+Version 1.4.0beta66 [June 27, 2009] |
+ Refer to the libpng license instead of the libpng license in each file. |
+ |
+Version 1.4.0beta67 [July 6, 2009] |
+ Relocated INVERT_ALPHA within png_read_png() and png_write_png(). |
+ Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB. |
+ Added an "xcode" project to the projects directory (Alam Arias). |
+ |
+Version 1.4.0beta68 [July 19, 2009] |
+ Avoid some tests in filter selection in pngwutil.c |
+ |
+Version 1.4.0beta69 [July 25, 2009] |
+ Simplified the new filter-selection test. This runs faster in the |
+ common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases. |
+ Removed extraneous declaration from the new call to png_read_gray_to_rgb() |
+ (bug introduced in libpng-1.4.0beta67). |
+ Fixed up xcode project (Alam Arias) |
+ Added a prototype for png_64bit_product() in png.c |
+ |
+Version 1.4.0beta70 [July 27, 2009] |
+ Avoid a possible NULL dereference in debug build, in png_set_text_2(). |
+ (bug introduced in libpng-0.95, discovered by Evan Rouault) |
+ |
+Version 1.4.0beta71 [July 29, 2009] |
+ Rebuilt configure scripts with autoconf-2.64. |
+ |
+Version 1.4.0beta72 [August 1, 2009] |
+ Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec |
+ from <http://tukaani.org/xz>. |
+ |
+Version 1.4.0beta73 [August 1, 2009] |
+ Reject attempt to write iCCP chunk with negative embedded profile length |
+ (JD Chen) (CVE-2009-5063). |
+ |
+Version 1.4.0beta74 [August 8, 2009] |
+ Changed png_ptr and info_ptr member "trans" to "trans_alpha". |
+ |
+Version 1.4.0beta75 [August 21, 2009] |
+ Removed an extra png_debug() recently added to png_write_find_filter(). |
+ Fixed incorrect #ifdef in pngset.c regarding unknown chunk support. |
+ |
+Version 1.4.0beta76 [August 22, 2009] |
+ Moved an incorrectly located test in png_read_row() in pngread.c |
+ |
+Version 1.4.0beta77 [August 27, 2009] |
+ Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt, |
+ and the "noconfig" files from the distribution. |
+ Moved CMakeLists.txt from scripts into the main libpng directory. |
+ Various bugfixes and improvements to CMakeLists.txt (Philip Lowman) |
+ |
+Version 1.4.0beta78 [August 31, 2009] |
+ Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h |
+ Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros. |
+ Use png_malloc plus a loop instead of png_calloc() to initialize |
+ row_pointers in png_read_png(). |
+ |
+Version 1.4.0beta79 [September 1, 2009] |
+ Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays. |
+ Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc(). |
+ |
+Version 1.4.0beta80 [September 17, 2009] |
+ Removed scripts/libpng.icc |
+ Changed typecast of filler from png_byte to png_uint_16 in png_set_filler(). |
+ (Dennis Gustafsson) |
+ Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ") |
+ |
+Version 1.4.0beta81 [September 23, 2009] |
+ Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h |
+ Expanded TAB characters in pngrtran.c |
+ Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid |
+ compiler complaints about doubly declaring things "const". |
+ Changed all "#if [!]defined(X)" to "if[n]def X" where possible. |
+ Eliminated unused png_ptr->row_buf_size |
+ |
+Version 1.4.0beta82 [September 25, 2009] |
+ Moved redundant IHDR checking into new png_check_IHDR() in png.c |
+ and report all errors found in the IHDR data. |
+ Eliminated useless call to png_check_cHRM() from pngset.c |
+ |
+Version 1.4.0beta83 [September 25, 2009] |
+ Revised png_check_IHDR() to eliminate bogus complaint about filter_type. |
+ |
+Version 1.4.0beta84 [September 30, 2009] |
+ Fixed some inconsistent indentation in pngconf.h |
+ Revised png_check_IHDR() to add a test for width variable less than 32-bit. |
+ |
+Version 1.4.0beta85 [October 1, 2009] |
+ Revised png_check_IHDR() again, to check info_ptr members instead of |
+ the contents of the returned parameters. |
+ |
+Version 1.4.0beta86 [October 9, 2009] |
+ Updated the "xcode" project (Alam Arias). |
+ Eliminated a shadowed declaration of "pp" in png_handle_sPLT(). |
+ |
+Version 1.4.0rc01 [October 19, 2009] |
+ Trivial cosmetic changes. |
+ |
+Version 1.4.0beta87 [October 30, 2009] |
+ Moved version 1.4.0 back into beta. |
+ |
+Version 1.4.0beta88 [October 30, 2009] |
+ Revised libpng*.txt section about differences between 1.2.x and 1.4.0 |
+ because most of the new features have now been ported back to 1.2.41 |
+ |
+Version 1.4.0beta89 [November 1, 2009] |
+ More bugfixes and improvements to CMakeLists.txt (Philip Lowman) |
+ Removed a harmless extra png_set_invert_alpha() from pngwrite.c |
+ Apply png_user_chunk_cache_max within png_decompress_chunk(). |
+ Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate. |
+ |
+Version 1.4.0beta90 [November 2, 2009] |
+ Removed all remaining WIN32_WCE #ifdefs except those involving the |
+ time.h "tm" structure |
+ |
+Version 1.4.0beta91 [November 3, 2009] |
+ Updated scripts/pngw32.def and projects/wince/png32ce.def |
+ Copied projects/wince/png32ce.def to the scripts directory. |
+ Added scripts/makefile.wce |
+ Patched ltmain.sh for wince support. |
+ Added PNG_CONVERT_tIME_SUPPORTED macro. |
+ |
+Version 1.4.0beta92 [November 4, 2009] |
+ Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED |
+ Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED |
+ Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead |
+ of differences from 1.2.41 to 1.4.0) |
+ |
+Version 1.4.0beta93 [November 7, 2009] |
+ Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and |
+ PNG_ALLOCATED macros to detect deprecated direct access to the |
+ png_struct or info_struct members and other deprecated usage in |
+ applications (John Bowler). |
+ Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS, |
+ to prevent warnings about direct access to png structs by libpng |
+ functions while building libpng. They need to be tested, especially |
+ those using compilers other than gcc. |
+ Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG". |
+ They should work but still need to be updated to remove |
+ references to pnggccrd.c or pngvcrd.c and ASM building. |
+ Added README.txt to the beos, cbuilder5, netware, and xcode projects warning |
+ that they need to be updated, to remove references to pnggccrd.c and |
+ pngvcrd.c and to depend on pngpriv.h |
+ Removed three direct references to read_info_ptr members in pngtest.c |
+ that were detected by the new PNG_DEPSTRUCT macro. |
+ Moved the png_debug macro definitions and the png_read_destroy(), |
+ png_write_destroy() and png_far_to_near() prototypes from png.h |
+ to pngpriv.h (John Bowler) |
+ Moved the synopsis lines for png_read_destroy(), png_write_destroy() |
+ png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3. |
+ |
+Version 1.4.0beta94 [November 9, 2009] |
+ Removed the obsolete, unused pnggccrd.c and pngvcrd.c files. |
+ Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions. |
+ Removed dependency of pngtest.o on pngpriv.h in the makefiles. |
+ Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined. |
+ |
+Version 1.4.0beta95 [November 10, 2009] |
+ Changed png_check_sig() to !png_sig_cmp() in contrib programs. |
+ Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile |
+ Changed png_check_sig() to !png_sig_cmp() in contrib programs. |
+ Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c |
+ Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c |
+ Added dependency on pngpriv.h in contrib/pngminim/*/makefile |
+ |
+Version 1.4.0beta96 [November 12, 2009] |
+ Renamed scripts/makefile.wce to scripts/makefile.cegcc |
+ Revised Makefile.am to use libpng.sys while building libpng.so |
+ so that only PNG_EXPORT functions are exported. |
+ Removed the deprecated png_check_sig() function/macro. |
+ Removed recently removed function names from scripts/*.def |
+ Revised pngtest.png to put chunks in the same order written by pngtest |
+ (evidently the same change made in libpng-1.0beta54 was lost). |
+ Added PNG_PRIVATE macro definition in pngconf.h for possible future use. |
+ |
+Version 1.4.0beta97 [November 13, 2009] |
+ Restored pngtest.png to the libpng-1.4.0beta7 version. |
+ Removed projects/beos and netware.txt; no one seems to be supporting them. |
+ Revised Makefile.in |
+ |
+Version 1.4.0beta98 [November 13, 2009] |
+ Added the "xcode" project to zip distributions, |
+ Fixed a typo in scripts/pngwin.def introduced in beta97. |
+ |
+Version 1.4.0beta99 [November 14, 2009] |
+ Moved libpng-config.in and libpng.pc-configure.in out of the scripts |
+ directory, to libpng-config.in and libpng-pc.in, respectively, and |
+ modified Makefile.am and configure.ac accordingly. Now "configure" |
+ needs nothing from the "scripts" directory. |
+ Avoid redefining PNG_CONST in pngconf.h |
+ |
+Version 1.4.0beta100 [November 14, 2009] |
+ Removed ASM builds from projects/visualc6 and projects/visualc71 |
+ Removed scripts/makefile.nommx and makefile.vcawin32 |
+ Revised CMakeLists.txt to account for new location of libpng-config.in |
+ and libpng-pc.in |
+ Updated INSTALL to reflect removal and relocation of files. |
+ |
+Version 1.4.0beta101 [November 14, 2009] |
+ Restored the binary files (*.jpg, *.png, some project files) that were |
+ accidentally deleted from the zip and 7z distributions when the xcode |
+ project was added. |
+ |
+Version 1.4.0beta102 [November 18, 2009] |
+ Added libpng-config.in and libpng-pc.in to the zip and 7z distributions. |
+ Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100. |
+ Moved descriptions of makefiles and other scripts out of INSTALL into |
+ scripts/README.txt |
+ Updated the copyright year in scripts/pngwin.rc from 2006 to 2009. |
+ |
+Version 1.4.0beta103 [November 21, 2009] |
+ Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt |
+ Align row_buf on 16-byte boundary in memory. |
+ Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call |
+ to png_flush() after png_write_IEND(). See 1.4.0beta32, 1.4.0beta50 |
+ changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES. Someone |
+ needs this feature. |
+ Make the 'png_jmpbuf' macro expand to a call that records the correct |
+ longjmp function as well as returning a pointer to the setjmp |
+ jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'. |
+ (John Bowler) |
+ |
+Version 1.4.0beta104 [November 22, 2009] |
+ Removed png_longjmp_ptr from scripts/*.def and libpng.3 |
+ Rebuilt configure scripts with autoconf-2.65 |
+ |
+Version 1.4.0beta105 [November 25, 2009] |
+ Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535() |
+ to accomplish alpha premultiplication when |
+ PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined. |
+ Changed "/255" to "/255.0" in background calculations to make it clear |
+ that the 255 is used as a double. |
+ |
+Version 1.4.0beta106 [November 27, 2009] |
+ Removed premultiplied alpha feature. |
+ |
+Version 1.4.0beta107 [December 4, 2009] |
+ Updated README |
+ Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files. |
+ Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects. |
+ Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco |
+ to put png.h and pngconf.h in $prefix/include, like the other scripts, |
+ instead of in $prefix/include/libpng. Also revised makefile.sco |
+ to put them in $prefix/include/libpng15 instead of in |
+ $prefix/include/libpng/libpng15. |
+ |
+Version 1.4.0beta108 [December 11, 2009] |
+ Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile |
+ Relocated png_do_chop() to its original position in pngrtran.c; the |
+ change in version 1.2.41beta08 caused transparency to be handled wrong |
+ in some 16-bit datastreams (Yusaku Sugai). |
+ |
+Version 1.4.0beta109 [December 13, 2009] |
+ Added "bit_depth" parameter to the private png_build_gamma_table() function. |
+ Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the |
+ PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit |
+ tables. |
+ |
+Version 1.4.0rc02 [December 20, 2009] |
+ Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c |
+ |
+Version 1.4.0rc03 [December 22, 2009] |
+ Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt |
+ (revising the change in 1.4.0beta99) |
+ |
+Version 1.4.0rc04 [December 25, 2009] |
+ Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
+ in pngset.c to be consistent with other changes in version 1.2.38. |
+ |
+Version 1.4.0rc05 [December 25, 2009] |
+ Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and |
+ Makefile.in to be consistent with changes in libpng-1.4.0rc03 |
+ |
+Version 1.4.0rc06 [December 29, 2009] |
+ Reverted the gamma_table changes from libpng-1.4.0beta109. |
+ Fixed some indentation errors. |
+ |
+Version 1.4.0rc07 [January 1, 2010] |
+ Revised libpng*.txt and libpng.3 about 1.2.x->1.4.x differences. |
+ Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c |
+ Update copyright year to 2010. |
+ |
+Version 1.4.0rc08 [January 2, 2010] |
+ Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr |
+ in pngtest.c |
+ |
+Version 1.4.0 [January 3, 2010] |
+ No changes. |
+ |
+Version 1.4.1beta01 [January 8, 2010] |
+ Updated CMakeLists.txt for consistent indentation and to avoid an |
+ unclosed if-statement warning (Philip Lowman). |
+ Revised Makefile.am and Makefile.in to remove references to Y2KINFO, |
+ KNOWNBUG, and libpng.la (Robert Schwebel). |
+ Revised the makefiles to install the same files and symbolic |
+ links as configure, except for libpng.la and libpng14.la. |
+ Make png_set|get_compression_buffer_size() available even when |
+ PNG_WRITE_SUPPORTED is not enabled. |
+ Revised Makefile.am and Makefile.in to simplify their maintenance. |
+ Revised scripts/makefile.linux to install a link to libpng14.so.14.1 |
+ |
+Version 1.4.1beta02 [January 9, 2010] |
+ Revised the rest of the makefiles to install a link to libpng14.so.14.1 |
+ |
+Version 1.4.1beta03 [January 10, 2010] |
+ Removed png_set_premultiply_alpha() from scripts/*.def |
+ |
+Version 1.4.1rc01 [January 16, 2010] |
+ No changes. |
+ |
+Version 1.4.1beta04 [January 23, 2010] |
+ Revised png_decompress_chunk() to improve speed and memory usage when |
+ decoding large chunks. |
+ Added png_set|get_chunk_malloc_max() functions. |
+ |
+Version 1.4.1beta05 [January 26, 2010] |
+ Relocated "int k" declaration in pngtest.c to minimize its scope. |
+ |
+Version 1.4.1beta06 [January 28, 2010] |
+ Revised png_decompress_chunk() to use a two-pass method suggested by |
+ John Bowler. |
+ |
+Version 1.4.1beta07 [February 6, 2010] |
+ Folded some long lines in the source files. |
+ Added defineable PNG_USER_CHUNK_CACHE_MAX, PNG_USER_CHUNK_MALLOC_MAX, |
+ and a PNG_USER_LIMITS_SUPPORTED flag. |
+ Eliminated use of png_ptr->irowbytes and reused the slot in png_ptr as |
+ png_ptr->png_user_chunk_malloc_max. |
+ Revised png_push_save_buffer() to do fewer but larger png_malloc() calls. |
+ |
+Version 1.4.1beta08 [February 6, 2010] |
+ Minor cleanup and updating of dates and copyright year. |
+ |
+Version 1.5.0beta01 [February 7, 2010] |
+ Moved declaration of png_struct into private pngstruct.h and png_info |
+ into pnginfo.h |
+ |
+Version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010] |
+ Reverted to original png_push_save_buffer() code. |
+ |
+Version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010] |
+ Return allocated "old_buffer" in png_push_save_buffer() before |
+ calling png_error(), to avoid a potential memory leak. |
+ Updated configure script to use SO number 15. |
+ |
+Version 1.5.0beta04 [February 9, 2010] |
+ Removed malformed "incomplete struct declaration" of png_info from png.h |
+ |
+Version 1.5.0beta05 [February 12, 2010] |
+ Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the |
+ linewrapping that it entailed. |
+ Revised comments in pngstruct.h and pnginfo.h and added pointers to |
+ the libpng license. |
+ Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES |
+ Removed the cbuilder5 project, which has not been updated to 1.4.0. |
+ |
+Version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010] |
+ Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke |
+ Nishikawa) |
+ |
+Version 1.5.0beta07 [omitted] |
+ |
+Version 1.5.0beta08 [February 19, 2010] |
+ Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED |
+ wherever png_snprintf() is used to construct error and warning messages. |
+ Noted in scripts/makefile.mingw that it expects to be run under MSYS. |
+ Removed obsolete unused MMX-querying support from contrib/gregbook |
+ Added exported png_longjmp() function. |
+ Removed the AIX redefinition of jmpbuf in png.h |
+ Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt |
+ when building on AIX. |
+ |
+Version 1.5.0beta09 [February 19, 2010] |
+ Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt. |
+ Changed the name of png_ptr->jmpbuf to png_ptr->png_jmpbuf in pngstruct.h |
+ |
+Version 1.5.0beta10 [February 25, 2010] |
+ Removed unused gzio.c from contrib/pngminim gather and makefile scripts |
+ Removed replacement error handlers from contrib/gregbook. Because of |
+ the new png_longjmp() function they are no longer needed. |
+ |
+Version 1.5.0beta11 [March 6, 2010] |
+ Removed checking for already-included setjmp.h from pngconf.h |
+ Fixed inconsistent indentations and made numerous cosmetic changes. |
+ Revised the "SEE ALSO" style of libpng.3, libpngpf.3, and png.5 |
+ |
+Version 1.5.0beta12 [March 9, 2010] |
+ Moved "#include png.h" inside pngpriv.h and removed "#include png.h" from |
+ the source files, along with "#define PNG_EXPOSE_INTERNAL_STRUCTURES" |
+ and "#define PNG_NO_PEDANTIC_WARNINGS" (John Bowler). |
+ Created new pngdebug.h and moved debug definitions there. |
+ |
+Version 1.5.0beta13 [March 10, 2010] |
+ Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice. |
+ Revise the "#ifdef" blocks in png_inflate() so it will compile when neither |
+ PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED |
+ is defined. |
+ Removed unused png_measure_compressed_chunk() from pngpriv.h and libpngpf.3 |
+ Moved the 'config.h' support from pngconf.h to pngpriv.h |
+ Removed PNGAPI from the png_longjmp_ptr typedef. |
+ Eliminated dependence of pngtest.c on the private pngdebug.h file. |
+ Make all png_debug macros into *unterminated* statements or |
+ expressions (i.e. a trailing ';' must always be added) and correct |
+ the format statements in various png_debug messages. |
+ |
+Version 1.5.0beta14 [March 14, 2010] |
+ Removed direct access to png_ptr->io_ptr from the Windows code in pngtest.c |
+ Revised Makefile.am to account for recent additions and replacements. |
+ Corrected CE and OS/2 DEF files (scripts/png*def) for symbols removed and |
+ added ordinal numbers to the Windows DEF file and corrected the duplicated |
+ ordinal numbers on CE symbols that are commented out. |
+ Added back in export symbols that can be present in the Windows build but |
+ are disabled by default. |
+ PNG_EXPORT changed to include an 'ordinal' field for DEF file generation. |
+ PNG_CALLBACK added to make callback definitions uniform. PNGAPI split |
+ into PNGCAPI (base C form), PNGAPI (exports) and PNGCBAPI (callbacks), |
+ and appropriate changes made to all files. Cygwin builds re-hinged to |
+ allow procedure call standard changes and to remove the need for the DEF |
+ file (fixes build on Cygwin). |
+ Enabled 'attribute' warnings that are relevant to library APIs and callbacks. |
+ Changed rules for generation of the various symbol files and added a new |
+ rule for a DEF file (which is also added to the distribution). |
+ Updated the symbol file generation to stop it adding spurious spaces |
+ to EOL (coming from preprocessor macro expansion). Added a facility |
+ to join tokens in the output and rewrite *.dfn to use this. |
+ Eliminated scripts/*.def in favor of libpng.def; updated projects/visualc71 |
+ and removed scripts/makefile.cygwin. |
+ Made PNG_BUILD_DLL safe: it can be set whenever a DLL is being built. |
+ Removed the include of sys/types.h - apparently unnecessary now on the |
+ platforms on which it happened (all but Mac OS and RISC OS). |
+ Moved the Mac OS test into pngpriv.h (the only place it is used.) |
+ |
+Version 1.5.0beta15 [March 17, 2010] |
+ Added symbols.chk target to Makefile.am to validate the symbols in png.h |
+ against the new DEF file scripts/symbols.def. |
+ Changed the default DEF file back to pngwin.def. |
+ Removed makefile.mingw. |
+ Eliminated PNG_NO_EXTERN and PNG_ALL_EXTERN |
+ |
+Version 1.5.0beta16 [April 1, 2010] |
+ Make png_text_struct independent of PNG_iTXt_SUPPORTED, so that |
+ fields are initialized in all configurations. The READ/WRITE |
+ macros (PNG_(READ|WRITE)_iTXt_SUPPORTED) still function as |
+ before to disable code to actually read or write iTXt chunks |
+ and iTXt_SUPPORTED can be used to detect presence of either |
+ read or write support (but it is probably better to check for |
+ the one actually required - read or write.) |
+ Combined multiple png_warning() calls for a single error. |
+ Restored the macro definition of png_check_sig(). |
+ |
+Version 1.5.0beta17 [April 17, 2010] |
+ Added some "(long)" typecasts to printf calls in png_handle_cHRM(). |
+ Documented the fact that png_set_dither() was disabled since libpng-1.4.0. |
+ Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect |
+ more accurately what it actually does. At the same time, renamed |
+ the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to |
+ PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS. |
+ Added some "(long)" typecasts to printf calls in png_handle_cHRM(). |
+ Freeze build-time only configuration in the build. |
+ In all prior versions of libpng most configuration options |
+ controlled by compiler #defines had to be repeated by the |
+ application code that used libpng. This patch changes this |
+ so that compilation options that can only be changed at build |
+ time are frozen in the build. Options that are compiler |
+ dependent (and those that are system dependent) are evaluated |
+ each time - pngconf.h holds these. Options that can be changed |
+ per-file in the application are in png.h. Frozen options are |
+ in the new installed header file pnglibconf.h (John Bowler) |
+ Removed the xcode project because it has not been updated to work |
+ with libpng-1.5.0. |
+ Removed the ability to include optional pngusr.h |
+ |
+Version 1.5.0beta18 [April 17, 2010] |
+ Restored the ability to include optional pngusr.h |
+ Moved replacements for png_error() and png_warning() from the |
+ contrib/pngminim project to pngerror.c, for use when warnings or |
+ errors are disabled via PNG_NO_WARN or PNG_NO_ERROR_TEXT, to avoid |
+ storing unneeded error/warning text. |
+ Updated contrib/pngminim project to work with the new pnglibconf.h |
+ Added some PNG_NO_* defines to contrib/pngminim/*/pngusr.h to save space. |
+ |
+Version 1.5.0beta19 [April 24, 2010] |
+ Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the functions |
+ to read and write ints to be disabled independently of PNG_USE_READ_MACROS, |
+ which allows libpng to be built with the functions even though the default |
+ is to use the macros - this allows applications to choose at app build |
+ time whether or not to use macros (previously impossible because the |
+ functions weren't in the default build.) |
+ Changed Windows calling convention back to __cdecl for API functions. |
+ For Windows/x86 platforms only: |
+ __stdcall is no longer needed for Visual Basic, so libpng-1.5.0 uses |
+ __cdecl throughout (both API functions and callbacks) on Windows/x86 |
+ platforms. |
+ Replaced visualc6 and visualc71 projects with new vstudio project |
+ Relaxed the overly-restrictive permissions of some files. |
+ |
+Version 1.5.0beta20 [April 24, 2010] |
+ Relaxed more overly-restrictive permissions of some files. |
+ |
+Version 1.5.0beta21 [April 27, 2010] |
+ Removed some unwanted binary bytes and changed CRLF to NEWLINE in the new |
+ vstudio project files, and some trivial editing of some files in the |
+ scripts directory. |
+ Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in |
+ contrib/pngminim/decoder/pngusr.h to make a smaller decoder application. |
+ |
+Version 1.5.0beta22 [April 28, 2010] |
+ Fixed dependencies of GET_INT_32 - it does not require READ_INT_FUNCTIONS |
+ because it has a macro equivalent. |
+ Improved the options.awk script; added an "everything off" option. |
+ Revised contrib/pngminim to use the "everything off" option in pngusr.dfa. |
+ |
+Version 1.5.0beta23 [April 29, 2010] |
+ Corrected PNG_REMOVED macro to take five arguments. |
+ The macro was documented with two arguments (name,ordinal), however |
+ the symbol checking .dfn files assumed five arguments. The five |
+ argument form seems more useful so it is changed to that. |
+ Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
+ in gregbook/readpng2.c |
+ Corrected protection of png_get_user_transform_ptr. The API declaration in |
+ png.h is removed if both READ and WRITE USER_TRANSFORM are turned off |
+ but was left defined in pngtrans.c |
+ Added logunsupported=1 to cause pnglibconf.h to document disabled options. |
+ This makes the installed pnglibconf.h more readable but causes no |
+ other change. The intention is that users of libpng will find it |
+ easier to understand if an API they need is missing. |
+ Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined. |
+ Removed dummy_inflate.c from contrib/pngminim/encoder |
+ Removed contrib/pngminim/*/gather.sh; gathering is now done in the makefile. |
+ |
+Version 1.5.0beta24 [May 7, 2010] |
+ Use bitwise "&" instead of arithmetic mod in pngrutil.c calculation of the |
+ offset of the png_ptr->rowbuf pointer into png_ptr->big_row_buf. |
+ Added more blank lines for readability. |
+ |
+Version 1.5.0beta25 [June 18, 2010] |
+ In pngpread.c: png_push_have_row() add check for new_row > height |
+ Removed the now-redundant check for out-of-bounds new_row from example.c |
+ |
+Version 1.5.0beta26 [June 18, 2010] |
+ In pngpread.c: png_push_process_row() add check for too many rows. |
+ |
+Version 1.5.0beta27 [June 18, 2010] |
+ Removed the check added in beta25 as it is now redundant. |
+ |
+Version 1.5.0beta28 [June 20, 2010] |
+ Rewrote png_process_IDAT_data to consistently treat extra data as warnings |
+ and handle end conditions more cleanly. |
+ Removed the new (beta26) check in png_push_process_row(). |
+ |
+Version 1.5.0beta29 [June 21, 2010] |
+ Revised scripts/options.awk to work on Sunos (but still doesn't work) |
+ Added comment to options.awk and contrib/pngminim/*/makefile to try nawk. |
+ |
+Version 1.5.0beta30 [June 22, 2010] |
+ Stop memory leak when reading a malformed sCAL chunk. |
+ |
+Version 1.5.0beta31 [June 26, 2010] |
+ Revised pngpread.c patch of beta28 to avoid an endless loop. |
+ Removed some trailing blanks. |
+ |
+Version 1.5.0beta32 [June 26, 2010] |
+ Removed leftover scripts/options.patch and scripts/options.rej |
+ |
+Version 1.5.0beta33 [July 6, 3010] |
+ Made FIXED and FLOATING options consistent in the APIs they enable and |
+ disable. Corrected scripts/options.awk to handle both command line |
+ options and options specified in the .dfa files. |
+ Changed char *msg to PNG_CONST char *msg in pngrutil.c |
+ Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or |
+ floating point APIs, but not both. |
+ Reversed patch to remove error handler when the jmp_buf is stored in the |
+ main program structure, not the png_struct. |
+ The error handler is needed because the default handler in libpng will |
+ always use the jmp_buf in the library control structure; this is never |
+ set. The gregbook code is a useful example because, even though it |
+ uses setjmp/longjmp, it shows how error handling can be implemented |
+ using control mechanisms not directly supported by libpng. The |
+ technique will work correctly with mechanisms such as Microsoft |
+ Structure Exceptions or C++ exceptions (compiler willing - note that gcc |
+ does not by default support interworking of C and C++ error handling.) |
+ Reverted changes to call png_longjmp in contrib/gregbook where it is not |
+ appropriate. If mainprog->jmpbuf is used by setjmp, then png_longjmp |
+ cannot be used. |
+ Changed "extern PNG_EXPORT" to "PNG_EXPORT" in png.h (Jan Nijtmans) |
+ Changed "extern" to "PNG_EXTERN" in pngpriv.h (except for the 'extern "C" {') |
+ |
+Version 1.5.0beta34 [July 12, 2010] |
+ Put #ifndef PNG_EXTERN, #endif around the define PNG_EXTERN in pngpriv.h |
+ |
+Version 1.5.0beta35 [July 24, 2010] |
+ Removed some newly-added TAB characters. |
+ Added -DNO_PNG_SNPRINTF to CFLAGS in scripts/makefile.dj2 |
+ Moved the definition of png_snprintf() outside of the enclosing |
+ #ifdef blocks in pngconf.h |
+ |
+Version 1.5.0beta36 [July 29, 2010] |
+ Patches by John Bowler: |
+ Fixed point APIs are now supported throughout (no missing APIs). |
+ Internal fixed point arithmetic support exists for all internal floating |
+ point operations. |
+ sCAL validates the floating point strings it is passed. |
+ Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2 |
+ Two new APIs exist to get the number of passes without turning on the |
+ PNG_INTERLACE transform and to get the number of rows in the current |
+ pass. |
+ A new test program, pngvalid.c, validates the gamma code. |
+ Errors in the 16-bit gamma correction (overflows) have been corrected. |
+ cHRM chunk testing is done consistently (previously the floating point |
+ API bypassed it, because the test really didn't work on FP, now the test |
+ is performed on the actual values to be stored in the PNG file so it |
+ works in the FP case too.) |
+ Most floating point APIs now simply call the fixed point APIs after |
+ converting the values to the fixed point form used in the PNG file. |
+ The standard headers no longer include zlib.h, which is currently only |
+ required for pngstruct.h and can therefore be internal. |
+ Revised png_get_int_32 to undo the PNG two's complement representation of |
+ negative numbers. |
+ |
+Version 1.5.0beta37 [July 30, 2010] |
+ Added a typecast in png_get_int_32() in png.h and pngrutil.h to avoid |
+ a compiler warning. |
+ Replaced oFFs 0,0 with oFFs -10,20 in pngtest.png |
+ |
+Version 1.5.0beta38 [July 31, 2010] |
+ Implemented remaining "_fixed" functions. |
+ Corrected a number of recently introduced warnings mostly resulting from |
+ safe but uncast assignments to shorter integers. Also added a zlib |
+ VStudio release library project because the latest zlib Official Windows |
+ build does not include such a thing. |
+ Revised png_get_int_16() to be similar to png_get_int_32(). |
+ Restored projects/visualc71. |
+ |
+Version 1.5.0beta39 [August 2, 2010] |
+ VisualC/GCC warning fixes, VisualC build fixes |
+ The changes include support for function attributes in VC in addition to |
+ those already present in GCC - necessary because without these some |
+ warnings are unavoidable. Fixes include signed/unsigned fixes in |
+ pngvalid and checks with gcc -Wall -Wextra -Wunused. |
+ VC requires function attributes on function definitions as well as |
+ declarations, PNG_FUNCTION has been added to enable this and the |
+ relevant function definitions changed. |
+ |
+Version 1.5.0beta40 [August 6, 2010] |
+ Correct use of _WINDOWS_ in pngconf.h |
+ Removed png_mem_ #defines; they are no longer used. |
+ Added the sRGB chunk to pngtest.png |
+ |
+Version 1.5.0beta41 [August 11, 2010] |
+ Added the cHRM chunk to pngtest.png |
+ Don't try to use version-script with cygwin/mingw. |
+ Revised contrib/gregbook to work under cygwin/mingw. |
+ |
+Version 1.5.0beta42 [August 18, 2010] |
+ Add .dll.a to the list of extensions to be symlinked by Makefile.am (Yaakov) |
+ Made all API functions that have const arguments and constant string |
+ literal pointers declare them (John Bowler). |
+ |
+Version 1.5.0beta43 [August 20, 2010] |
+ Removed spurious tabs, shorten long lines (no source change) |
+ Also added scripts/chkfmt to validate the format of all the files that can |
+ reasonably be validated (it is suggested to run "make distclean" before |
+ checking, because some machine generated files have long lines.) |
+ Reformatted the CHANGES file to be more consistent throughout. |
+ Made changes to address various issues identified by GCC, mostly |
+ signed/unsigned and shortening problems on assignment but also a few |
+ difficult to optimize (for GCC) loops. |
+ Fixed non-GCC fixed point builds. In png.c a declaration was misplaced |
+ in an earlier update. Fixed to declare the auto variables at the head. |
+ Use cexcept.h in pngvalid.c. |
+ |
+Version 1.5.0beta44 [August 24, 2010] |
+ Updated CMakeLists.txt to use CMAKE_INSTALL_LIBDIR variable; useful for |
+ installing libpng in /usr/lib64 (Funda Wang). |
+ Revised CMakeLists.txt to put the man pages in share/man/man* not man/man* |
+ Revised CMakeLists.txt to make symlinks instead of copies when installing. |
+ Changed PNG_LIB_NAME from pngNN to libpngNN in CMakeLists.txt (Philip Lowman) |
+ Implemented memory checks within pngvalid |
+ Reformatted/rearranged pngvalid.c to assist use of progressive reader. |
+ Check interlaced images in pngvalid |
+ Clarified pngusr.h comments in pnglibconf.dfa |
+ Simplified the pngvalid error-handling code now that cexcept.h is in place. |
+ Implemented progressive reader in pngvalid.c for standard tests |
+ Implemented progressive read in pngvalid.c gamma tests |
+ Turn on progressive reader in pngvalid.c by default and tidy code. |
+ |
+Version 1.5.0beta45 [August 26, 2010] |
+ Added an explicit make step to projects/vstudio for pnglibconf.h |
+ Also corrected zlib.vcxproj into which Visual Studio had introduced |
+ what it calls an "authoring error". The change to make pnglibconf.h |
+ simply copies the file; in the future it may actually generate the |
+ file from scripts/pnglibconf.dfa as the other build systems do. |
+ Changed pngvalid to work when floating point APIs are disabled |
+ Renamed the prebuilt scripts/pnglibconf.h to scripts/pnglibconf.h.prebuilt |
+ Supply default values for PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX |
+ in pngpriv.h in case the user neglected to define them in their pngusr.h |
+ |
+Version 1.5.0beta46 [August 28, 2010] |
+ Added new private header files to libpng_sources in CMakeLists.txt |
+ Added PNG_READ_16BIT, PNG_WRITE_16BIT, and PNG_16BIT options. |
+ Added reference to scripts/pnglibconf.h.prebuilt in the visualc71 project. |
+ |
+Version 1.5.0beta47 [September 11, 2010] |
+ Fixed a number of problems with 64-bit compilation reported by Visual |
+ Studio 2010 (John Bowler). |
+ |
+Version 1.5.0beta48 [October 4, 2010] |
+ Updated CMakeLists.txt (Philip Lowman). |
+ Revised autogen.sh to recognize and use $AUTOCONF, $AUTOMAKE, $AUTOHEADER, |
+ $AUTOPOINT, $ACLOCAL and $LIBTOOLIZE |
+ Fixed problem with symbols creation in Makefile.am which was assuming that |
+ all versions of ccp write to standard output by default (Martin Banky). The |
+ bug was introduced in libpng-1.2.9beta5. |
+ Removed unused mkinstalldirs. |
+ |
+Version 1.5.0beta49 [October 8, 2010] |
+ Undid Makefile.am revision of 1.5.0beta48. |
+ |
+Version 1.5.0beta50 [October 14, 2010] |
+ Revised Makefile.in to account for mkinstalldirs being removed. |
+ Added some "(unsigned long)" typecasts in printf statements in pngvalid.c. |
+ Suppressed a compiler warning in png_handle_sPLT(). |
+ Check for out-of-range text compression mode in png_set_text(). |
+ |
+Version 1.5.0beta51 [October 15, 2010] |
+ Changed embedded dates to "(PENDING RELEASE) in beta releases (and future |
+ rc releases) to minimize the difference between releases. |
+ |
+Version 1.5.0beta52 [October 16, 2010] |
+ Restored some of the embedded dates (in png.h, png.c, documentation, etc.) |
+ |
+Version 1.5.0beta53 [October 18, 2010] |
+ Updated INSTALL to mention using "make maintainer-clean" and to remove |
+ obsolete statement about a custom ltmain.sh |
+ Disabled "color-tests" by default in Makefile.am so it will work with |
+ automake versions earlier than 1.11.1 |
+ Use document name "libpng-manual.txt" instead of "libpng-<version>.txt" |
+ to simplify version differences. |
+ Removed obsolete remarks about setjmp handling from INSTALL. |
+ Revised and renamed the typedef in png.h and png.c that was designed |
+ to catch library and header mismatch. |
+ |
+Version 1.5.0beta54 [November 10, 2010] |
+ Require 48 bytes, not 64 bytes, for big_row_buf in overflow checks. |
+ Used a consistent structure for the pngget.c functions. |
+ |
+Version 1.5.0beta55 [November 21, 2010] |
+ Revised png_get_uint_32, png_get_int_32, png_get_uint_16 (Cosmin) |
+ Moved reading of file signature into png_read_sig (Cosmin) |
+ Fixed atomicity of chunk header serialization (Cosmin) |
+ Added test for io_state in pngtest.c (Cosmin) |
+ Added "#!/bin/sh" at the top of contrib/pngminim/*/gather.sh scripts. |
+ Changes to remove gcc warnings (John Bowler) |
+ Certain optional gcc warning flags resulted in warnings in libpng code. |
+ With these changes only -Wconversion and -Wcast-qual cannot be turned on. |
+ Changes are trivial rearrangements of code. -Wconversion is not possible |
+ for pngrutil.c (because of the widespread use of += et al on variables |
+ smaller than (int) or (unsigned int)) and -Wcast-qual is not possible |
+ with pngwio.c and pngwutil.c because the 'write' callback and zlib |
+ compression both fail to declare their input buffers with 'const'. |
+ |
+Version 1.5.0beta56 [December 7, 2010] |
+ Added the private PNG_UNUSED() macro definition in pngpriv.h. |
+ Added some commentary about PNG_EXPORT in png.h and pngconf.h |
+ Revised PNG_EXPORT() macro and added PNG_EXPORTA() macro, with the |
+ objective of simplifying and improving the cosmetic appearance of png.h. |
+ Fixed some incorrect "=" macro names in pnglibconf.dfa |
+ Included documentation of changes in 1.5.0 from 1.4.x in libpng-manual.txt |
+ |
+Version 1.5.0beta57 [December 9, 2010] |
+ Documented the pngvalid gamma error summary with additional comments and |
+ print statements. |
+ Improved missing symbol handling in checksym.awk; symbols missing in both |
+ the old and new files can now be optionally ignored, treated as errors |
+ or warnings. |
+ Removed references to pngvcrd.c and pnggccrd.c from the vstudio project. |
+ Updated "libpng14" to "libpng15" in the visualc71 project. |
+ Enabled the strip16 tests in pngvalid.` |
+ Don't display test results (except PASS/FAIL) when running "make test". |
+ Instead put them in pngtest-log.txt |
+ Added "--with-zprefix=<string>" to configure.ac |
+ Updated the prebuilt configuration files to autoconf version 2.68 |
+ |
+Version 1.5.0beta58 [December 19, 2010] |
+ Fixed interlace image handling and add test cases (John Bowler) |
+ Fixed the clean rule in Makefile.am to remove pngtest-log.txt |
+ Made minor changes to work around warnings in gcc 3.4 |
+ |
+Version 1.5.0rc01 [December 27, 2010] |
+ No changes. |
+ |
+Version 1.5.0rc02 [December 27, 2010] |
+ Eliminated references to the scripts/*.def files in project/visualc71. |
+ |
+Version 1.5.0rc03 [December 28, 2010] |
+ Eliminated scripts/*.def and revised Makefile.am accordingly |
+ |
+Version 1.5.0rc04 [December 29, 2010] |
+ Fixed bug in background transformation handling in pngrtran.c (it was |
+ looking for the flag in png_ptr->transformations instead of in |
+ png_ptr->flags) (David Raymond). |
+ |
+Version 1.5.0rc05 [December 31, 2010] |
+ Fixed typo in a comment in CMakeLists.txt (libpng14 => libpng15) (Cosmin) |
+ |
+Version 1.5.0rc06 [January 4, 2011] |
+ Changed the new configure option "zprefix=string" to "zlib-prefix=string" |
+ |
+Version 1.5.0rc07 [January 4, 2011] |
+ Updated copyright year. |
+ |
+Version 1.5.0 [January 6, 2011] |
+ No changes. |
+ |
+version 1.5.1beta01 [January 8, 2011] |
+ Added description of png_set_crc_action() to the manual. |
+ Added a note in the manual that the type of the iCCP profile was changed |
+ from png_charpp to png_bytepp in png_get_iCCP(). This change happened |
+ in version 1.5.0beta36 but is not noted in the CHANGES. Similarly, |
+ it was changed from png_charpp to png_const_bytepp in png_set_iCCP(). |
+ Ensure that png_rgb_to_gray ignores palette mapped images, if libpng |
+ internally happens to call it with one, and fixed a failure to handle |
+ palette mapped images correctly. This fixes CVE-2690. |
+ |
+Version 1.5.1beta02 [January 14, 2011] |
+ Fixed a bug in handling of interlaced images (bero at arklinux.org). |
+ Updated CMakeLists.txt (Clifford Yapp) |
+ |
+Version 1.5.1beta03 [January 14, 2011] |
+ Fixed typecasting of some png_debug() statements (Cosmin) |
+ |
+Version 1.5.1beta04 [January 16, 2011] |
+ Updated documentation of png_set|get_tRNS() (Thomas Klausner). |
+ Mentioned in the documentation that applications must #include "zlib.h" |
+ if they need access to anything in zlib.h, and that a number of |
+ macros such as png_memset() are no longer accessible by applications. |
+ Corrected pngvalid gamma test "sample" function to access all of the color |
+ samples of each pixel, instead of sampling the red channel three times. |
+ Prefixed variable names index, div, exp, gamma with "png_" to avoid "shadow" |
+ warnings, and (mistakenly) changed png_exp() to exp(). |
+ |
+Version 1.5.1beta05 [January 16, 2011] |
+ Changed variable names png_index, png_div, png_exp, and png_gamma to |
+ char_index, divisor, exp_b10, and gamma_val, respectively, and |
+ changed exp() back to png_exp(). |
+ |
+Version 1.5.1beta06 [January 20, 2011] |
+ Prevent png_push_crc_skip() from hanging while reading an unknown chunk |
+ or an over-large compressed zTXt chunk with the progressive reader. |
+ Eliminated more GCC "shadow" warnings. |
+ Revised png_fixed() in png.c to avoid compiler warning about reaching the |
+ end without returning anything. |
+ |
+Version 1.5.1beta07 [January 22, 2011] |
+ In the manual, describe the png_get_IHDR() arguments in the correct order. |
+ Added const_png_structp and const_png_infop types, and used them in |
+ prototypes for most png_get_*() functions. |
+ |
+Version 1.5.1beta08 [January 23, 2011] |
+ Added png_get_io_chunk_type() and deprecated png_get_io_chunk_name() |
+ Added synopses for the IO_STATE functions and other missing synopses |
+ to the manual. Removed the synopses from libpngpf.3 because they |
+ were out of date and no longer useful. Better information can be |
+ obtained by reading the prototypes and comments in pngpriv.h |
+ Attempted to fix cpp on Solaris with S. Studio 12 cc, fix build |
+ Added a make macro DFNCPP that is a CPP that will accept the tokens in |
+ a .dfn file and adds configure stuff to test for such a CPP. ./configure |
+ should fail if one is not available. |
+ Corrected const_png_ in png.h to png_const_ to avoid polluting the namespace. |
+ Added png_get_current_row_number and png_get_current_pass_number for the |
+ benefit of the user transform callback. |
+ Added png_process_data_pause and png_process_data_skip for the benefit of |
+ progressive readers that need to stop data processing or want to optimize |
+ skipping of unread data (e.g., if the reader marks a chunk to be skipped.) |
+ |
+Version 1.5.1beta09 [January 24, 2011] |
+ Enhanced pngvalid, corrected an error in gray_to_rgb, corrected doc error. |
+ pngvalid contains tests of transforms, which tests are currently disabled |
+ because they are incompletely tested. gray_to_rgb was failing to expand |
+ the bit depth for smaller bit depth images; this seems to be a long |
+ standing error and resulted, apparently, in invalid output |
+ (CVE-2011-0408, CERT VU#643140). The documentation did not accurately |
+ describe what libpng really does when converting RGB to gray. |
+ |
+Version 1.5.1beta10 [January 27, 2010] |
+ Fixed incorrect examples of callback prototypes in the manual, that were |
+ introduced in libpng-1.0.0. |
+ In addition the order of the png_get_uint macros with respect to the |
+ relevant function definitions has been reversed. This helps the |
+ preprocessing of the symbol files be more robust. Furthermore, the |
+ symbol file preprocessing now uses -DPNG_NO_USE_READ_MACROS even when |
+ the library may actually be built with PNG_USE_READ_MACROS; this stops |
+ the read macros interfering with the symbol file format. |
+ Made the manual, synopses, and function prototypes use the function |
+ argument names file_gamma, int_file_gamma, and srgb_intent consistently. |
+ |
+Version 1.5.1beta11 [January 28, 2011] |
+ Changed PNG_UNUSED from "param=param;" to "{if(param){}}". |
+ Corrected local variable type in new API png_process_data_skip() |
+ The type was self-evidently incorrect but only causes problems on 64-bit |
+ architectures. |
+ Added transform tests to pngvalid and simplified the arguments. |
+ |
+Version 1.5.1rc01 [January 29, 2011] |
+ No changes. |
+ |
+Version 1.5.1rc02 [January 31, 2011] |
+ Added a request in the manual that applications do not use "png_" or |
+ "PNG_" to begin any of their own symbols. |
+ Changed PNG_UNUSED to "(void)param;" and updated the commentary in pngpriv.h |
+ |
+Version 1.5.1 [February 3, 2011] |
+ No changes. |
+ |
+Version 1.5.2beta01 [February 13, 2011] |
+ More -Wshadow fixes for older gcc compilers. Older gcc versions apparently |
+ check formal parameters names in function declarations (as well as |
+ definitions) to see if they match a name in the global namespace. |
+ Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the |
+ old VisualC++ preprocessor. |
+ Turned on interlace handling in png_read_png(). |
+ Fixed gcc pendantic warnings. |
+ Handle longjmp in Cygwin. |
+ Fixed png_get_current_row_number() in the interlaced case. |
+ Cleaned up ALPHA flags and transformations. |
+ Implemented expansion to 16 bits. |
+ |
+Version 1.5.2beta02 [February 19, 2011] |
+ Fixed mistake in the descriptions of user read_transform and write_transform |
+ function prototypes in the manual. The row_info struct is png_row_infop. |
+ Reverted png_get_current_row_number() to previous (1.5.2beta01) behavior. |
+ Corrected png_get_current_row_number documentation |
+ Fixed the read/write row callback documentation. |
+ This documents the current behavior, where the callback is called after |
+ every row with information pertaining to the next row. |
+ |
+Version 1.5.2beta03 [March 3, 2011] |
+ Fixed scripts/makefile.vcwin32 |
+ Updated contrib/pngsuite/README to add the word "modify". |
+ Define PNG_ALLOCATED to blank when _MSC_VER<1300. |
+ |
+Version 1.5.2rc01 [March 19, 2011] |
+ Define remaining attributes to blank when MSC_VER<1300. |
+ ifdef out mask arrays in pngread.c when interlacing is not supported. |
+ |
+Version 1.5.2rc02 [March 22, 2011] |
+ Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak |
+ and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip" |
+ from the makefiles. |
+ Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail |
+ to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill) |
+ |
+Version 1.5.2rc03 [March 24, 2011] |
+ Don't include standard header files in png.h while building the symbol table, |
+ to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro). |
+ |
+Version 1.5.2 [March 31, 2011] |
+ No changes. |
+ |
+Version 1.5.3beta01 [April 1, 2011] |
+ Re-initialize the zlib compressor before compressing non-IDAT chunks. |
+ Added API functions (png_set_text_compression_level() and four others) to |
+ set parameters for zlib compression of non-IDAT chunks. |
+ |
+Version 1.5.3beta02 [April 3, 2011] |
+ Updated scripts/symbols.def with new API functions. |
+ Only compile the new zlib re-initializing code when text or iCCP is |
+ supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro. |
+ Improved the optimization of the zlib CMF byte (see libpng-1.2.6beta03). |
+ Optimize the zlib CMF byte in non-IDAT compressed chunks |
+ |
+Version 1.5.3beta03 [April 16, 2011] |
+ Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have |
+ snprintf, and the "__STRICT_ANSI__" detects that condition more reliably |
+ than __STDC__ (John Bowler). |
+ Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells |
+ the compiler that a user supplied callback (the error handler) does not |
+ return, yet there is no guarantee in practice that the application code |
+ will correctly implement the error handler because the compiler only |
+ issues a warning if there is a mistake (John Bowler). |
+ Removed the no-longer-used PNG_DEPSTRUCT macro. |
+ Updated the zlib version to 1.2.5 in the VStudio project. |
+ Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in |
+ pngwutil.c (John Bowler). |
+ Fixed bug with stripping the filler or alpha channel when writing, that |
+ was introduced in libpng-1.5.2beta01 (bug report by Andrew Church). |
+ |
+Version 1.5.3beta04 [April 27, 2011] |
+ Updated pngtest.png with the new zlib CMF optimization. |
+ Cleaned up conditional compilation code and of background/gamma handling |
+ Internal changes only except a new option to avoid compiling the |
+ png_build_grayscale_palette API (which is not used at all internally.) |
+ The main change is to move the transform tests (READ_TRANSFORMS, |
+ WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids |
+ calls to spurious functions if all transforms are disabled and slightly |
+ simplifies those functions. Pngvalid modified to handle this. |
+ A minor change is to stop the strip_16 and expand_16 interfaces from |
+ disabling each other; this allows the future alpha premultiplication |
+ code to use 16-bit intermediate values while still producing 8-bit output. |
+ png_do_background and png_do_gamma have been simplified to take a single |
+ pointer to the png_struct rather than pointers to every item required |
+ from the png_struct. This makes no practical difference to the internal |
+ code. |
+ A serious bug in the pngvalid internal routine 'standard_display_init' has |
+ been fixed - this failed to initialize the red channel and accidentally |
+ initialized the alpha channel twice. |
+ Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to |
+ avoid a possible clash with the png_jmpbuf macro on some platforms. |
+ |
+Version 1.5.3beta05 [May 6, 2011] |
+ Added the "_POSIX_SOURCE" feature test macro to ensure libpng sees the |
+ correct API. _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and |
+ pngvalid.c to ensure that POSIX conformant systems disable non-POSIX APIs. |
+ Removed png_snprintf and added formatted warning messages. This change adds |
+ internal APIs to allow png_warning messages to have parameters without |
+ requiring the host OS to implement snprintf. As a side effect the |
+ dependency of the tIME-supporting RFC1132 code on stdio is removed and |
+ PNG_NO_WARNINGS does actually work now. |
+ Pass "" instead of '\0' to png_default_error() in png_err(). This mistake |
+ was introduced in libpng-1.2.20beta01. This fixes CVE-2011-2691. |
+ Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte |
+ optimization configureable. |
+ IDAT compression failed if preceded by a compressed text chunk (bug |
+ introduced in libpng-1.5.3beta01-02). This was because the attempt to |
+ reset the zlib stream in png_write_IDAT happened after the first IDAT |
+ chunk had been deflated - much too late. In this change internal |
+ functions were added to claim/release the z_stream and, hopefully, make |
+ the code more robust. Also deflateEnd checking is added - previously |
+ libpng would ignore an error at the end of the stream. |
+ |
+Version 1.5.3beta06 [May 8, 2011] |
+ Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt |
+ Implemented premultiplied alpha support: png_set_alpha_mode API |
+ |
+Version 1.5.3beta07 [May 11, 2011] |
+ Added expand_16 support to the high level interface. |
+ Added named value and 'flag' gamma support to png_set_gamma. Made a minor |
+ change from the previous (unreleased) ABI/API to hide the exact value used |
+ for Macs - it's not a good idea to embed this in the ABI! |
+ Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and PNG_AFTER_IDAT |
+ from pngpriv.h to png.h because they must be visible to applications |
+ that call png_set_unknown_chunks(). |
+ Check for up->location !PNG_AFTER_IDAT when writing unknown chunks |
+ before IDAT. |
+ |
+Version 1.5.3beta08 [May 16, 2011] |
+ Improved "pngvalid --speed" to exclude more of pngvalid from the time. |
+ Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt |
+ The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative |
+ parameters are supplied by the caller), while in the absence of cHRM |
+ sRGB/Rec 709 values are still used. This introduced a divide-by-zero |
+ bug in png_handle_cHRM(). |
+ The bKGD chunk no longer overwrites the background value set by |
+ png_set_background(), allowing the latter to be used before the file |
+ header is read. It never performed any useful function to override |
+ the default anyway. |
+ Added memory overwrite and palette image checks to pngvalid.c |
+ Previously palette image code was poorly checked. Since the transformation |
+ code has a special palette path in most cases this was a severe weakness. |
+ Minor cleanup and some extra checking in pngrutil.c and pngrtran.c. When |
+ expanding an indexed image, always expand to RGBA if transparency is |
+ present. |
+ |
+Version 1.5.3beta09 [May 17, 2011] |
+ Reversed earlier 1.5.3 change of transformation order; move png_expand_16 |
+ back where it was. The change doesn't work because it requires 16-bit |
+ gamma tables when the code only generates 8-bit ones. This fails |
+ silently; the libpng code just doesn't do any gamma correction. Moving |
+ the tests back leaves the old, inaccurate, 8-bit gamma calculations, but |
+ these are clearly better than none! |
+ |
+Version 1.5.3beta10 [May 20, 2011] |
+ |
+ png_set_background() and png_expand_16() did not work together correctly. |
+ This problem is present in 1.5.2; if png_set_background is called with |
+ need_expand false and the matching 16 bit color libpng erroneously just |
+ treats it as an 8-bit color because of where png_do_expand_16 is in the |
+ transform list. This simple fix reduces the supplied colour to 8-bits, |
+ so it gets smashed, but this is better than the current behavior. |
+ Added tests for expand16, more fixes for palette image tests to pngvalid. |
+ Corrects the code for palette image tests and disables attempts to |
+ validate palette colors. |
+ |
+Version 1.5.3rc01 [June 3, 2011] |
+ No changes. |
+ |
+Version 1.5.3rc02 [June 8, 2011] |
+ Fixed uninitialized memory read in png_format_buffer() (Bug report by |
+ Frank Busse, CVE-2011-2501, related to CVE-2004-0421). |
+ |
+Version 1.5.3beta11 [June 11, 2011] |
+ Fixed png_handle_sCAL which is broken in 1.5. This fixes CVE 2011-2692. |
+ Added sCAL to pngtest.png |
+ Revised documentation about png_set_user_limits() to say that it also affects |
+ png writing. |
+ Revised handling of png_set_user_limits() so that it can increase the |
+ limit beyond the PNG_USER_WIDTH|HEIGHT_MAX; previously it could only |
+ reduce it. |
+ Make the 16-to-8 scaling accurate. Dividing by 256 with no rounding is |
+ wrong (high by one) 25% of the time. Dividing by 257 with rounding is |
+ wrong in 128 out of 65536 cases. Getting the right answer all the time |
+ without division is easy. |
+ Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro. |
+ Added projects/owatcom, an IDE project for OpenWatcom to replace |
+ scripts/makefile.watcom. This project works with OpenWatcom 1.9. The |
+ IDE autogenerates appropriate makefiles (libpng.mk) for batch processing. |
+ The project is configurable, unlike the Visual Studio project, so long |
+ as the developer has an awk. |
+ Changed png_set_gAMA to limit the gamma value range so that the inverse |
+ of the stored value cannot overflow the fixed point representation, |
+ and changed other things OpenWatcom warns about. |
+ Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. This allows |
+ pngvalid to build when ALPHA_MODE is not supported, which is required if |
+ it is to build on libpng 1.4. |
+ Removed string/memory macros that are no longer used and are not |
+ necessarily fully supportable, particularly png_strncpy and png_snprintf. |
+ Added log option to pngvalid.c and attempted to improve gamma messages. |
+ |
+Version 1.5.3 [omitted] |
+ People found the presence of a beta release following an rc release |
+ to be confusing; therefore we bump the version to libpng-1.5.4beta01 |
+ and there will be no libpng-1.5.3 release. |
+ |
+Version 1.5.4beta01 [June 14, 2011] |
+ Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED |
+ to get the same (inaccurate) output as libpng-1.5.2 and earlier. |
+ Moved definitions of PNG_HAVE_IHDR, PNG_AFTER_IDAT, and PNG_HAVE_PLTE |
+ outside of an unknown-chunk block in png.h because they are also |
+ needed for other uses. |
+ |
+Version 1.5.4beta02 [June 14, 2011] |
+ Fixed and clarified LEGACY 16-to-8 scaling code. |
+ Added png_set_chop_16() API, to match inaccurate results from previous |
+ libpng versions. |
+ Removed the ACCURATE and LEGACY options (they are no longer useable) |
+ Use the old scaling method for background if png_set_chop_16() was |
+ called. |
+ Made png_set_chop_16() API removeable by disabling PNG_CHOP_16_TO_8_SUPPORTED |
+ |
+Version 1.5.4beta03 [June 15, 2011] |
+ Fixed a problem in png_do_expand_palette() exposed by optimization in |
+ 1.5.3beta06 |
+ Also removed a spurious and confusing "trans" member ("trans") from png_info. |
+ The palette expand optimization prevented expansion to an intermediate RGBA |
+ form if tRNS was present but alpha was marked to be stripped; this exposed |
+ a check for tRNS in png_do_expand_palette() which is inconsistent with the |
+ code elsewhere in libpng. |
+ Correction to the expand_16 code; removed extra instance of |
+ png_set_scale_16_to_8 from pngpriv.h |
+ |
+Version 1.5.4beta04 [June 16, 2011] |
+ Added a missing "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c |
+ Added PNG_TRANSFORM_CHOP_16 to the high-level read transforms. |
+ Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. If this is |
+ not enabled, png_set_strip_16() and png_do_scale_16_to_8() aren't built. |
+ Revised contrib/visupng, gregbook, and pngminim to demonstrate chop_16_to_8 |
+ |
+Version 1.5.4beta05 [June 16, 2011] |
+ Renamed png_set_strip_16() to png_set_scale_16() and renamed |
+ png_set_chop_16() to png_set_strip(16) in an attempt to minimize the |
+ behavior changes between libpng14 and libpng15. |
+ |
+Version 1.5.4beta06 [June 18, 2011] |
+ Fixed new bug that was causing both strip_16 and scale_16 to be applied. |
+ |
+Version 1.5.4beta07 [June 19, 2011] |
+ Fixed pngvalid, simplified macros, added checking for 0 in sCAL. |
+ The ACCURATE scale macro is no longer defined in 1.5 - call the |
+ png_scale_16_to_8 API. Made sure that PNG_READ_16_TO_8 is still defined |
+ if the png_strip_16_to_8 API is present. png_check_fp_number now |
+ maintains some state so that positive, negative and zero values are |
+ identified. sCAL uses these to be strictly spec conformant. |
+ |
+Version 1.5.4beta08 [June 23, 2011] |
+ Fixed pngvalid if ACCURATE_SCALE is defined. |
+ Updated scripts/pnglibconf.h.prebuilt. |
+ |
+Version 1.5.4rc01 [June 30, 2011] |
+ Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400. |
+ |
+Version 1.5.4 [July 7, 2011] |
+ No changes. |
+ |
+Version 1.5.5beta01 [July 13, 2011] |
+ Fixed some typos and made other minor changes in the manual. |
+ Updated contrib/pngminus/makefile.std (Samuli Souminen) |
+ |
+Version 1.5.5beta02 [July 14, 2011] |
+ Revised Makefile.am and Makefile.in to look in the right directory for |
+ pnglibconf.h.prebuilt |
+ |
+Version 1.5.5beta03 [July 27, 2011] |
+ Enabled compilation with g++ compiler. This compiler does not recognize |
+ the file extension, so it always compiles with C++ rules. Made minor |
+ changes to pngrutil.c to cast results where C++ expects it but C does not. |
+ Minor editing of libpng.3 and libpng-manual.txt. |
+ |
+Version 1.5.5beta04 [July 29, 2011] |
+ Revised CMakeLists.txt (Clifford Yapp) |
+ Updated commentary about the png_rgb_to_gray() default coefficients |
+ in the manual and in pngrtran.c |
+ |
+Version 1.5.5beta05 [August 17, 2011] |
+ Prevent unexpected API exports from non-libpng DLLs on Windows. The "_DLL" |
+ is removed from the test of whether a DLL is being built (this erroneously |
+ caused the libpng APIs to be marked as DLL exports in static builds under |
+ Microsoft Visual Studio). Almost all of the libpng building configuration |
+ is moved from pngconf.h to pngpriv.h, but PNG_DLL_EXPORT remains in |
+ pngconf.h, though, so that it is colocated with the import definition (it |
+ is no longer used anywhere in the installed headers). The VStudio project |
+ definitions have been cleaned up: "_USRDLL" has been removed from the |
+ static library builds (this was incorrect), and PNG_USE_DLL has been added |
+ to pngvalid to test the functionality (pngtest does not supply it, |
+ deliberately). The spurious "_EXPORTS" has been removed from the |
+ libpng build (all these errors were a result of copy/paste between project |
+ configurations.) |
+ Added new types and internal functions for CIE RGB end point handling to |
+ pngpriv.h (functions yet to be implemented). |
+ |
+Version 1.5.5beta06 [August 26, 2011] |
+ Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set in CMakeLists.txt |
+ (Clifford Yap) |
+ Fixes to rgb_to_gray and cHRM XYZ APIs (John Bowler): |
+ The rgb_to_gray code had errors when combined with gamma correction. |
+ Some pixels were treated as true grey when they weren't and such pixels |
+ and true grey ones were not gamma corrected (the original value of the |
+ red component was used instead). APIs to get and set cHRM using color |
+ space end points have been added and the rgb_to_gray code that defaults |
+ based on cHRM, and the divide-by-zero bug in png_handle_cHRM (CERT |
+ VU#477046, CVE-2011-3328, introduced in 1.5.4) have been corrected. |
+ A considerable number of tests has been added to pngvalid for the |
+ rgb_to_gray transform. |
+ Arithmetic errors in rgb_to_gray whereby the calculated gray value was |
+ truncated to the bit depth rather than rounded have been fixed except in |
+ the 8-bit non-gamma-corrected case (where consistency seems more important |
+ than correctness.) The code still has considerable inaccuracies in the |
+ 8-bit case because 8-bit linear arithmetic is used. |
+ |
+Version 1.5.5beta07 [September 7, 2011] |
+ Added "$(ARCH)" option to makefile.darwin |
+ Added SunOS support to configure.ac and Makefile.am |
+ Changed png_chunk_benign_error() to png_warning() in png.c, in |
+ png_XYZ_from_xy_checked(). |
+ |
+Version 1.5.5beta08 [September 10, 2011] |
+ Fixed 64-bit compilation errors (gcc). The errors fixed relate |
+ to conditions where types that are 32 bits in the GCC 32-bit |
+ world (uLong and png_size_t) become 64 bits in the 64-bit |
+ world. This produces potential truncation errors which the |
+ compiler correctly flags. |
+ Relocated new HAVE_SOLARIS_LD definition in configure.ac |
+ Constant changes for 64-bit compatibility (removal of L suffixes). The |
+ 16-bit cases still use "L" as we don't have a 16-bit test system. |
+ |
+Version 1.5.5rc01 [September 15, 2011] |
+ Removed "L" suffixes in pngpriv.h |
+ |
+Version 1.5.5 [September 22, 2011] |
+ No changes. |
+ |
+Version 1.5.6beta01 [September 22, 2011] |
+ Fixed some 64-bit type conversion warnings in pngrtran.c |
+ Moved row_info from png_struct to a local variable. |
+ The various interlace mask arrays have been made into arrays of |
+ bytes and made PNG_CONST and static (previously some arrays were |
+ marked PNG_CONST and some weren't). |
+ Additional checks have been added to the transform code to validate the |
+ pixel depths after the transforms on both read and write. |
+ Removed some redundant code from pngwrite.c, in png_destroy_write_struct(). |
+ Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4]. |
+ This removes the need to allocate temporary strings for chunk names on |
+ the stack in the read/write code. Unknown chunk handling still uses the |
+ string form because this is exposed in the API. |
+ |
+Version 1.5.6beta02 [September 26, 2011] |
+ Added a note in the manual the png_read_update_info() must be called only |
+ once with a particular info_ptr. |
+ Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro. |
+ |
+Version 1.5.6beta03 [September 28, 2011] |
+ Revised test-pngtest.sh to report FAIL when pngtest fails. |
+ Added "--strict" option to pngtest, to report FAIL when the failure is |
+ only because the resulting valid files are different. |
+ Revised CMakeLists.txt to work with mingw and removed some material from |
+ CMakeLists.txt that is no longer useful in libpng-1.5. |
+ |
+Version 1.5.6beta04 [October 5, 2011] |
+ Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")." |
+ |
+Version 1.5.6beta05 [October 12, 2011] |
+ Speed up png_combine_row() for interlaced images. This reduces the generality |
+ of the code, allowing it to be optimized for Adam7 interlace. The masks |
+ passed to png_combine_row() are now generated internally, avoiding |
+ some code duplication and localizing the interlace handling somewhat. |
+ Align png_struct::row_buf - previously it was always unaligned, caused by |
+ a bug in the code that attempted to align it; the code needs to subtract |
+ one from the pointer to take account of the filter byte prepended to |
+ each row. |
+ Optimized png_combine_row() when rows are aligned. This gains a small |
+ percentage for 16-bit and 32-bit pixels in the typical case where the |
+ output row buffers are appropriately aligned. The optimization was not |
+ previously possible because the png_struct buffer was always misaligned. |
+ Fixed bug in png_write_chunk_header() debug print, introduced in 1.5.6beta01. |
+ |
+Version 1.5.6beta06 [October 17, 2011] |
+ Removed two redundant tests for unitialized row. |
+ Fixed a relatively harmless memory overwrite in compressed text writing |
+ with a 1 byte zlib buffer. |
+ Add ability to call png_read_update_info multiple times to pngvalid.c. |
+ Fixes for multiple calls to png_read_update_info. These fixes attend to |
+ most of the errors revealed in pngvalid, however doing the gamma work |
+ twice results in inaccuracies that can't be easily fixed. There is now |
+ a warning in the code if this is going to happen. |
+ Turned on multiple png_read_update_info in pngvalid transform tests. |
+ Prevent libpng from overwriting unused bits at the end of the image when |
+ it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would |
+ overwrite the partial byte at the end of each row if the row width was not |
+ an exact multiple of 8 bits and the image is not interlaced. |
+ |
+Version 1.5.6beta07 [October 21, 2011] |
+ Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row |
+ (Mans Rullgard). |
+ |
+Version 1.5.6rc01 [October 26, 2011] |
+ Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM" |
+ |
+Version 1.5.6rc02 [October 27, 2011] |
+ Added LSR() macro to defend against buggy compilers that evaluate non-taken |
+ code branches and complain about out-of-range shifts. |
+ |
+Version 1.5.6rc03 [October 28, 2011] |
+ Renamed the LSR() macro to PNG_LSR() and added PNG_LSL() macro. |
+ Fixed compiler warnings with Intel and MSYS compilers. The logical shift |
+ fix for Microsoft Visual C is required by other compilers, so this |
+ enables that fix for all compilers when using compile-time constants. |
+ Under MSYS 'byte' is a name declared in a system header file, so we |
+ changed the name of a local variable to avoid the warnings that result. |
+ Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h |
+ |
+Version 1.5.6 [November 3, 2011] |
+ No changes. |
+ |
+Version 1.5.7beta01 [November 4, 2011] |
+ Added support for ARM processor, when decoding all PNG up-filtered rows |
+ and any other-filtered rows with 3 or 4 bytes per pixel (Mans Rullgard). |
+ Fixed bug in pngvalid on early allocation failure; fixed type cast in |
+ pngmem.c; pngvalid would attempt to call png_error() if the allocation |
+ of a png_struct or png_info failed. This would probably have led to a |
+ crash. The pngmem.c implementation of png_malloc() included a cast |
+ to png_size_t which would fail on large allocations on 16-bit systems. |
+ Fix for the preprocessor of the Intel C compiler. The preprocessor |
+ splits adjacent @ signs with a space; this changes the concatentation |
+ token from @-@-@ to PNG_JOIN; that should work with all compiler |
+ preprocessors. |
+ Paeth filter speed improvements from work by Siarhei Siamashka. This |
+ changes the 'Paeth' reconstruction function to improve the GCC code |
+ generation on x86. The changes are only part of the suggested ones; |
+ just the changes that definitely improve speed and remain simple. |
+ The changes also slightly increase the clarity of the code. |
+ |
+Version 1.5.7beta02 [November 11, 2011] |
+ Check compression_type parameter in png_get_iCCP and remove spurious |
+ casts. The compression_type parameter is always assigned to, so must |
+ be non-NULL. The cast of the profile length potentially truncated the |
+ value unnecessarily on a 16-bit int system, so the cast of the (byte) |
+ compression type to (int) is specified by ANSI-C anyway. |
+ Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left |
+ the sBIT fields in the test pixel as 0, which resulted in a floating |
+ point division by zero which was irrelevant but causes systems where |
+ FP exceptions cause a crash. Added code to pngvalid to turn on FP |
+ exceptions if the appropriate glibc support is there to ensure this is |
+ tested in the future. |
+ Updated scripts/pnglibconf.mak and scripts/makefile.std to handle the |
+ new PNG_JOIN macro. |
+ Added versioning to pnglibconf.h comments. |
+ Simplified read/write API initial version; basic read/write tested on |
+ a variety of images, limited documentation (in the header file.) |
+ Installed more accurate linear to sRGB conversion tables. The slightly |
+ modified tables reduce the number of 16-bit values that |
+ convert to an off-by-one 8-bit value. The "makesRGB.c" code that was used |
+ to generate the tables is now in a contrib/sRGBtables sub-directory. |
+ |
+Version 1.5.7beta03 [November 17, 2011] |
+ Removed PNG_CONST from the sRGB table declarations in pngpriv.h and png.c |
+ Added run-time detection of NEON support. |
+ Added contrib/libtests; includes simplified API test and timing test and |
+ a color conversion utility for rapid checking of failed 'pngstest' results. |
+ Multiple transform bug fixes plus a work-round for double gamma correction. |
+ libpng does not support more than one transform that requires linear data |
+ at once - if this is tried typically the results is double gamma |
+ correction. Since the simplified APIs can need rgb to gray combined with |
+ a compose operation it is necessary to do one of these outside the main |
+ libpng transform code. This check-in also contains fixes to various bugs |
+ in the simplified APIs themselves and to some bugs in compose and rgb to |
+ gray (on palette) itself. |
+ Fixes for C++ compilation using g++ When libpng source is compiled |
+ using g++. The compiler imposes C++ rules on the C source; thus it |
+ is desireable to make the source work with either C or C++ rules |
+ without throwing away useful error information. This change adds |
+ png_voidcast to allow C semantic (void*) cases or the corresponding |
+ C++ static_cast operation, as appropriate. |
+ Added --noexecstack to assembler file compilation. GCC does not set |
+ this on assembler compilation, even though it does on C compilation. |
+ This creates security issues if assembler code is enabled; the |
+ work-around is to set it by default in the flags for $(CCAS) |
+ Work around compilers that don't support declaration of const data. Some |
+ compilers fault 'extern const' data declarations (because the data is |
+ not initialized); this turns on const-ness only for compilers where |
+ this is known to work. |
+ |
+Version 1.5.7beta04 [November 17, 2011] |
+ Since the gcc driver does not recognize the --noexecstack flag, we must |
+ use the -Wa prefix to have it passed through to the assembler. |
+ Also removed a duplicate setting of this flag. |
+ Added files that were omitted from the libpng-1.5.7beta03 zip distribution. |
+ |
+Version 1.5.7beta05 [November 25, 2011] |
+ Removed "zTXt" from warning in generic chunk decompression function. |
+ Validate time settings passed to 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 vesions of GCC. This eliminates those warnings by |
+ adding/removing casts and small code rewrites. |
+ Updated configure.ac from autoupdate: added --enable-werror option. |
+ Also some layout regularization and removal of introduced tab characters |
+ (replaced with 3-character indentation). Obsolete macros identified by |
+ autoupdate have been removed; the replacements are all in 2.59 so |
+ the pre-req hasn't been changed. --enable-werror checks for support |
+ for -Werror (or the given argument) in the compiler. This mimics the |
+ gcc configure option by allowing -Werror to be turned on safely; without |
+ the option the tests written in configure itself fail compilation because |
+ they cause compiler warnings. |
+ Rewrote autogen.sh to run autoreconf instead of running tools one-by-one. |
+ Conditionalize the install rules for MINGW and CYGWIN in CMakeLists.txt and |
+ set CMAKE_LIBRARY_OUTPUT_DIRECTORY to "lib" on all platforms (C. Yapp). |
+ Freeze libtool files in the 'scripts' directory. This version of autogen.sh |
+ attempts to dissuade people from running it when it is not, or should not, |
+ be necessary. In fact, autogen.sh does not work when run in a libpng |
+ directory extracted from a tar distribution anymore. You must run it in |
+ a GIT clone instead. |
+ Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale), |
+ and renamed three whose names were inconsistent with those in |
+ pngsuite/README.txt. |
+ |
+Version 1.6.0beta08 [February 1, 2012] |
+ Fixed Image::colormap misalignment in pngstest.c |
+ Check libtool/libtoolize version number (2.4.2) in configure.ac |
+ Divide test-pngstest.sh into separate pngstest runs for basic and |
+ transparent images. |
+ Moved automake options to AM_INIT_AUTOMAKE in configure.ac |
+ Added color-tests, silent-rules (Not yet implemented in Makefile.am) and |
+ version checking to configure.ac |
+ Improved pngstest speed by not doing redundant tests and add const to |
+ the background parameter of png_image_finish_read. The --background |
+ option is now done automagically only when required, so that commandline |
+ option no longer exists. |
+ Cleaned up pngpriv.h to consistently declare all functions and data. |
+ Also eliminated PNG_CONST_DATA, which is apparently not needed but we |
+ can't be sure until it is gone. |
+ Added symbol prefixing that allows all the libpng external symbols |
+ to be prefixed (suggested by Reuben Hawkins). |
+ Updated "ftbb*.png" list in the owatcom and vstudio projects. |
+ Fixed 'prefix' builds on clean systems. The generation of pngprefix.h |
+ should not require itself. |
+ Updated INSTALL to explain that autogen.sh must be run in a GIT clone, |
+ not in a libpng directory extracted from a tar distribution. |
+ |
+Version 1.6.0beta09 [February 1, 2012] |
+ Reverted the prebuilt configure files to libpng-1.6.0beta05 condition. |
+ |
+Version 1.6.0beta10 [February 3, 2012] |
+ Added Z_SOLO for zlib-1.2.6+ and correct pngstest tests |
+ Updated list of test images in CMakeLists.txt |
+ Updated the prebuilt configure files to current condition. |
+ Revised INSTALL information about autogen.sh; it works in tar distributions. |
+ |
+Version 1.6.0beta11 [February 16, 2012] |
+ Fix character count in pngstest command in projects/owatcom/pngstest.tgt |
+ Revised test-pngstest.sh to report PASS/FAIL for each image. |
+ Updated documentation about the simplified API. |
+ Corrected estimate of error in libpng png_set_rgb_to_gray API. The API is |
+ extremely inaccurate for sRGB conversions because it uses an 8-bit |
+ intermediate linear value and it does not use the sRGB transform, so it |
+ suffers from the known instability in gamma transforms for values close |
+ to 0 (see Poynton). The net result is that the calculation has a maximum |
+ error of 14.99/255; 0.5/255^(1/2.2). pngstest now uses 15 for the |
+ permitted 8-bit error. This may still not be enough because of arithmetic |
+ error. |
+ Removed some unused arrays (with #ifdef) from png_read_push_finish_row(). |
+ Fixed a memory overwrite bug in simplified read of RGB PNG with |
+ non-linear gamma Also bugs in the error checking in pngread.c and changed |
+ quite a lot of the checks in pngstest.c to be correct; either correctly |
+ written or not over-optimistic. The pngstest changes are insufficient to |
+ allow all possible RGB transforms to be passed; pngstest cmppixel needs |
+ to be rewritten to make it clearer which errors it allows and then changed |
+ to permit known inaccuracies. |
+ Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h |
+ Fixed fixed/float API export conditionals. 1) If FIXED_POINT or |
+ FLOATING_POINT options were switched off, png.h ended up with lone ';' |
+ characters. This is not valid ANSI-C outside a function. The ';' |
+ characters have been moved inside the definition of PNG_FP_EXPORT and |
+ PNG_FIXED_EXPORT. 2) If either option was switched off, the declaration |
+ of the corresponding functions were completely omitted, even though some |
+ of them are still used internally. The result is still valid, but |
+ produces warnings from gcc with some warning options (including -Wall). The |
+ fix is to cause png.h to declare the functions with PNG_INTERNAL_FUNCTION |
+ when png.h is included from pngpriv.h. |
+ Check for invalid palette index while reading paletted PNG. When one is |
+ found, issue a warning and increase png_ptr->num_palette accordingly. |
+ Apps are responsible for checking to see if that happened. |
+ |
+Version 1.6.0beta12 [February 18, 2012] |
+ Do not increase num_palette on invalid_index. |
+ Relocated check for invalid palette index to pngrtran.c, after unpacking |
+ the sub-8-bit pixels. |
+ Fixed CVE-2011-3026 buffer overrun bug. This bug was introduced when |
+ iCCP chunk support was added at libpng-1.0.6. Deal more correctly with the |
+ test on iCCP chunk length. Also removed spurious casts that may hide |
+ problems on 16-bit systems. |
+ |
+Version 1.6.0beta13 [February 24, 2012] |
+ Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from |
+ pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c; |
+ now that png_ptr->buffer is inaccessible to applications, the special |
+ handling is no longer useful. |
+ Added PNG_SAFE_LIMITS feature to pnglibconf.dfa, pngpriv.h, and new |
+ pngusr.dfa to reset the user limits to safe ones if PNG_SAFE_LIMITS is |
+ defined. To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED=1" on the |
+ configure command or put #define PNG_SAFE_LIMITS_SUPPORTED in |
+ pnglibconf.h.prebuilt and pnglibconf.h. |
+ |
+Version 1.6.0beta14 [February 27, 2012] |
+ Added information about the new limits in the manual. |
+ Updated Makefile.in |
+ |
+Version 1.6.0beta15 [March 2, 2012] |
+ Removed unused "current_text" members of png_struct and the png_free() |
+ of png_ptr->current_text from pngread.c |
+ Rewrote pngstest.c for substantial speed improvement. |
+ Fixed transparent pixel and 16-bit rgb tests in pngstest and removed a |
+ spurious check in pngwrite.c |
+ Added PNG_IMAGE_FLAG_FAST for the benefit of applications that store |
+ intermediate files, or intermediate in-memory data, while processing |
+ image data with the simplified API. The option makes the files larger |
+ but faster to write and read. pngstest now uses this by default; this |
+ can be disabled with the --slow option. |
+ Improved pngstest fine tuning of error numbers, new test file generator. |
+ The generator generates images that test the full range of sample values, |
+ allow the error numbers in pngstest to be tuned and checked. makepng |
+ also allows generation of images with extra chunks, although this is |
+ still work-in-progress. |
+ Added check for invalid palette index while reading. |
+ Fixed some bugs in ICC profile writing. The code should now accept |
+ all potentially valid ICC profiles and reject obviously invalid ones. |
+ It now uses png_error() to do so rather than casually writing a PNG |
+ without the necessary color data. |
+ Removed whitespace from the end of lines in all source files and scripts. |
+ |
+Version 1.6.0beta16 [March 6, 2012] |
+ Relocated palette-index checking function from pngrutil.c to pngtrans.c |
+ Added palette-index checking while writing. |
+ Changed png_inflate() and calling routines to avoid overflow problems. |
+ This is an intermediate check-in that solves the immediate problems and |
+ introduces one performance improvement (avoiding a copy via png_ptr->zbuf.) |
+ Further changes will be made to make ICC profile handling more secure. |
+ Fixed build warnings (MSVC, GCC, GCC v3). Cygwin GCC with default options |
+ declares 'index' as a global, causing a warning if it is used as a local |
+ variable. GCC 64-bit warns about assigning a (size_t) (unsigned 64-bit) |
+ to an (int) (signed 32-bit). MSVC, however, warns about using the |
+ unary '-' operator on an unsigned value (even though it is well defined |
+ by ANSI-C to be ~x+1). The padding calculation was changed to use a |
+ different method. Removed the tests on png_ptr->pass. |
+ Added contrib/libtests/tarith.c to test internal arithmetic functions from |
+ png.c. This is a libpng maintainer program used to validate changes to the |
+ internal arithmetic functions. |
+ Made read 'inflate' handling like write 'deflate' handling. The read |
+ code now claims and releases png_ptr->zstream, like the write code. |
+ The bug whereby the progressive reader failed to release the zstream |
+ is now fixed, all initialization is delayed, and the code checks for |
+ changed parameters on deflate rather than always calling |
+ deflatedEnd/deflateInit. |
+ Validate the zTXt strings in pngvalid. |
+ Added code to validate the windowBits value passed to deflateInit2(). |
+ If the call to deflateInit2() is wrong a png_warning will be issued |
+ (in fact this is harmless, but the PNG data produced may be sub-optimal). |
+ |
+Version 1.6.0beta17 [March 10, 2012] |
+ Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition. |
+ Reject all iCCP chunks after the first, even if the first one is invalid. |
+ Deflate/inflate was reworked to move common zlib calls into single |
+ functions [rw]util.c. A new shared keyword check routine was also added |
+ and the 'zbuf' is no longer allocated on progressive read. It is now |
+ possible to call png_inflate() incrementally. A warning is no longer |
+ issued if the language tag or translated keyword in the iTXt chunk |
+ has zero length. |
+ If benign errors are disabled use maximum window on ancilliary inflate. |
+ This works round a bug introduced in 1.5.4 where compressed ancillary |
+ chunks could end up with a too-small windowBits value in the deflate |
+ header. |
+ |
+Version 1.6.0beta18 [March 16, 2012] |
+ Issue a png_benign_error() instead of png_warning() about bad palette index. |
+ In pngtest, treat benign errors as errors if "-strict" is present. |
+ Fixed an off-by-one error in the palette index checking function. |
+ Fixed a compiler warning under Cygwin (Windows-7, 32-bit system) |
+ Revised example.c to put text strings in a temporary character array |
+ instead of directly assigning string constants to png_textp members. |
+ This avoids compiler warnings when -Wwrite-strings is enabled. |
+ Added output flushing to aid debugging under Visual Studio. Unfortunately |
+ this is necessary because the VS2010 output window otherwise simply loses |
+ the error messages on error (they weren't flushed to the window before |
+ the process exited, apparently!) |
+ Added configuration support for benign errors and changed the read |
+ default. Also changed some warnings in the iCCP and sRGB handling |
+ from to benign errors. Configuration now makes read benign |
+ errors warnings and write benign errors to errors by default (thus |
+ changing the behavior on read). The simplified API always forces |
+ read benign errors to warnings (regardless of the system default, unless |
+ this is disabled in which case the simplified API can't be built.) |
+ |
+Version 1.6.0beta19 [March 18, 2012] |
+ Work around for duplicate row start calls; added warning messages. |
+ This turns on PNG_FLAG_DETECT_UNINITIALIZED to detect app code that |
+ fails to call one of the 'start' routines (not enabled in libpng-1.5 |
+ because it is technically an API change, since it did normally work |
+ before.) It also makes duplicate calls to png_read_start_row (an |
+ internal function called at the start of the image read) benign, as |
+ they were before changes to use png_inflate_claim. Somehow webkit is |
+ causing this to happen; this is probably a mis-feature in the zlib |
+ changes so this commit is only a work-round. |
+ Removed erroneous setting of DETECT_UNINITIALIZED and added more |
+ checks. The code now does a png_error if an attempt is made to do the |
+ row initialization twice; this is an application error and it has |
+ serious consequences because the transform data in png_struct is |
+ changed by each call. |
+ Added application error reporting and added chunk names to read |
+ benign errors; also added --strict to pngstest - not enabled |
+ yet because a warning is produced. |
+ Avoid the double gamma correction warning in the simplified API. |
+ This allows the --strict option to pass in the pngstest checks |
+ |
+Version 1.6.0beta20 [March 29, 2012] |
+ Changed chunk handler warnings into benign errors, incrementally load iCCP |
+ Added checksum-icc.c to contrib/tools |
+ Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice. |
+ Recognize known sRGB ICC profiles while reading; prefer writing the |
+ iCCP profile over writing the sRGB chunk, controlled by the |
+ PNG_sRGB_PROFILE_CHECKS option. |
+ Revised png_set_text_2() to avoid potential memory corruption (fixes |
+ CVE-2011-3048, also known as CVE-2012-3425). |
+ |
+Version 1.6.0beta21 [April 27, 2012] |
+ Revised scripts/makefile.darwin: use system zlib; remove quotes around |
+ architecture list; add missing ppc architecture; add architecture options |
+ to shared library link; don't try to create a shared lib based on missing |
+ RELEASE variable. |
+ Enable png_set_check_for_invalid_index() for both read and write. |
+ Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpriv.h around |
+ declaration of png_handle_unknown(). |
+ Added -lssp_nonshared in a comment in scripts/makefile.freebsd |
+ and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE. |
+ |
+Version 1.6.0beta22 [May 23, 2012] |
+ Removed need for -Wno-cast-align with clang. clang correctly warns on |
+ alignment increasing pointer casts when -Wcast-align is passed. This |
+ fixes the cases that clang warns about either by eliminating the |
+ casts from png_bytep to png_uint_16p (pngread.c), or, for pngrutil.c |
+ where the cast is previously verified or pngstest.c where it is OK, by |
+ introducing new png_aligncast macros to do the cast in a way that clang |
+ accepts. |
+ |
+Version 1.6.0beta23 [June 6, 2012] |
+ Revised CMakeLists.txt to not attempt to make a symlink under mingw. |
+ Made fixes for new optimization warnings from gcc 4.7.0. The compiler |
+ performs an optimization which is safe; however it then warns about it. |
+ Changing the type of 'palette_number' in pngvalid.c removes the warning. |
+ Do not depend upon a GCC feature macro being available for use in generating |
+ the linker mapfile symbol prefix. |
+ Improved performance of new do_check_palette_indexes() function (only |
+ update the value when it actually increases, move test for whether |
+ the check is wanted out of the function. |
+ |
+Version 1.6.0beta24 [June 7, 2012] |
+ Don't check palette indexes if num_palette is 0 (as it can be in MNG files). |
+ |
+Version 1.6.0beta25 [June 16, 2012] |
+ Revised png_set_keep_unknown_chunks() so num_chunks < 0 means ignore all |
+ unknown chunks and all known chunks except for IHDR, PLTE, tRNS, IDAT, |
+ and IEND. Previously it only meant ignore all unknown chunks, the |
+ same as num_chunks == 0. Revised png_image_skip_unused_chunks() to |
+ provide a list of chunks to be processed instead of a list of chunks to |
+ ignore. Revised contrib/gregbook/readpng2.c accordingly. |
+ |
+Version 1.6.0beta26 [July 10, 2012] |
+ Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it |
+ depends on configure, which is not included in those archives. |
+ Moved scripts/chkfmt to contrib/tools. |
+ Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386. |
+ |
+Version 1.6.0beta27 [August 11, 2012] |
+ Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3. |
+ Do not use __restrict when GNUC is <= 3.1 |
+ Removed references to png_zalloc() and png_zfree() from the manual. |
+ Fixed configurations where floating point is completely disabled. Because |
+ of the changes to support symbol prefixing PNG_INTERNAL_FUNCTION declares |
+ floating point APIs during libpng builds even if they are completely |
+ disabled. This requires the png floating point types (png_double*) to be |
+ declared even though the functions are never actually defined. This |
+ change provides a dummy definition so that the declarations work, yet any |
+ implementation will fail to compile because of an incomplete type. |
+ Re-eliminated the use of strcpy() in pngtest.c. An unncessary use of |
+ strcpy() was accidentally re-introduced in libpng16; this change replaces |
+ it with strncpy(). |
+ Eliminated use of png_sizeof(); use sizeof() instead. |
+ Use a consistent style for (sizeof type) and (sizeof (array)) |
+ Cleanup of png_set_filler(). This function does very different things on |
+ read and write. In libpng 1.6 the two cases can be distinguished and |
+ considerable code cleanup, and extra error checking, is possible. This |
+ makes calls on the write side that have no effect be ignored with a |
+ png_app_error(), which can be disabled in the app using |
+ png_set_benign_errors(), and removes the spurious use of usr_channels |
+ on the read side. |
+ Insist on autotools 1.12.1 for git builds because there are security issues |
+ with 1.12 and insisting on anything less would allow 1.12 to be used. |
+ Removed info_ptr->signature[8] from WRITE-only builds. |
+ Add some conditions for compiling png_fixed(). This is a small function |
+ but it requires "-lm" on some platforms. |
+ Cause pngtest --strict to fail on any warning from libpng (not just errors) |
+ and cause it not to fail at the comparison step if libpng lacks support |
+ for writing chunks that it reads from the input (currently only implemented |
+ for compressed text chunks). |
+ Make all three "make check" test programs work without READ or WRITE support. |
+ Now "make check" will succeed even if libpng is compiled with -DPNG_NO_READ |
+ or -DPNG_NO_WRITE. The tests performed are reduced, but the basic reading |
+ and writing of a PNG file is always tested by one or more of the tests. |
+ Consistently use strlen(), memset(), memcpy(), and memcmp() instead of the |
+ png_strlen(), png_memset(), png_memcpy(), and png_memcmp() macros. |
+ Removed the png_sizeof(), png_strlen(), png_memset(), png_memcpy(), and |
+ png_memcmp() macros. |
+ Work around gcc 3.x and Microsoft Visual Studio 2010 complaints. Both object |
+ to the split initialization of num_chunks. |
+ |
+Version 1.6.0beta28 [August 29, 2012] |
+ Unknown handling fixes and clean up. This adds more correct option |
+ control of the unknown handling, corrects the pre-existing bug where |
+ the per-chunk 'keep' setting is ignored and makes it possible to skip |
+ IDAT chunks in the sequential reader (broken in earlier 1.6 versions). |
+ There is a new test program, test-unknown.c, which is a work in progress |
+ (not currently part of the test suite). Comments in the header files now |
+ explain how the unknown handling works. |
+ Allow fine grain control of unknown chunk APIs. This change allows |
+ png_set_keep_unknown_chunks() to be turned off if not required and causes |
+ both read and write to behave appropriately (on read this is only possible |
+ if the user callback is used to handle unknown chunks). The change |
+ also removes the support for storing unknown chunks in the info_struct |
+ if the only unknown handling enabled is via the callback, allowing libpng |
+ to be configured with callback reading and none of the unnecessary code. |
+ Corrected fix for unknown handling in pngtest. This reinstates the |
+ libpng handling of unknown chunks other than vpAg and sTER (including |
+ unsafe-to-copy chunks which were dropped before) and eliminates the |
+ repositioning of vpAg and sTER in pngtest.png by changing pngtest.png |
+ (so the chunks are where libpng would put them). |
+ Added "tunknown" test and corrected a logic error in png_handle_unknown() |
+ when SAVE support is absent. Moved the shell test scripts for |
+ contrib/libtests from the libpng top directory to contrib/libtests. |
+ png_handle_unknown() must always read or skip the chunk, if |
+ SAVE_UNKNOWN_CHUNKS is turned off *and* the application does not set |
+ a user callback an unknown chunk will not be read, leading to a read |
+ error, which was revealed by the "tunknown" test. |
+ Cleaned up and corrected ICC profile handling. |
+ contrib/libtests/makepng: corrected 'rgb' and 'gray' cases. profile_error |
+ messages could be truncated; made a correct buffer size calculation and |
+ adjusted pngerror.c appropriately. png_icc_check_* checking improved; |
+ changed the functions to receive the correct color type of the PNG on read |
+ or write and check that it matches the color space of the profile (despite |
+ what the comments said before, there is danger in assuming the app will |
+ cope correctly with an RGB profile on a grayscale image and, since it |
+ violates the PNG spec, allowing it is certain to produce inconsistent |
+ app behavior and might even cause app crashes.) Check that profiles |
+ contain the tags needed to process the PNG (tags all required by the ICC |
+ spec). Removed unused PNG_STATIC from pngpriv.h. |
+ |
+Version 1.6.0beta29 [September 4, 2012] |
+ Fixed the simplified API example programs to add the *colormap parameter |
+ to several of he API and improved the error message if the version field |
+ is not set. |
+ Added contrib/examples/* to the *.zip and *.7z distributions. |
+ Updated simplified API synopses and description of the png_image structure |
+ in the manual. |
+ Made makepng and pngtest produce identical PNGs, add "--relaxed" option |
+ to pngtest. The "--relaxed" option turns off the benign errors that are |
+ enabled by default in pre-RC builds. makepng can now write ICC profiles |
+ where the length has not been extended to a multiple of 4, and pngtest |
+ now intercepts all libpng errors, allowing the previously-introduced |
+ "--strict test" on no warnings to actually work. |
+ Improved ICC profile handling including cHRM chunk generation and fixed |
+ Cygwin+MSVC build errors. The ICC profile handling now includes more |
+ checking. Several errors that caused rejection of the profile are now |
+ handled with a warning in such a way that the invalid profiles will be |
+ read by default in release (but not pre-RC) builds but will not be |
+ written by default. The easy part of handling the cHRM chunk is written, |
+ where the ICC profile contains the required data. The more difficult |
+ part plus guessing a gAMA value requires code to pass selected RGB values |
+ through the profile. |
+ |
+Version 1.6.0beta30 [October 24, 2012] |
+ Changed ICC profile matrix/vector types to not depend on array type rules. |
+ By the ANSI-C standard the new types should be identical to the previous |
+ versions, and all known versions of gcc tested with the previous versions |
+ except for GCC-4.2.1 work with this version. The change makes the ANSI-C |
+ rule that const applied to an array of elements applies instead to the |
+ elements in the array moot by explicitly applying const to the base |
+ elements of the png_icc_matrix and png_icc_vector types. The accidental |
+ (harmless) 'const' previously applied to the parameters of two of the |
+ functions have also been removed. |
+ Added a work around for GCC 4.2 optimization bug. |
+ Marked the broken (bad white point) original HP sRGB profiles correctly and |
+ correct comments. |
+ Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7 |
+ Use /MDd for vstudio debug builds. Also added pngunkown to the vstudio |
+ builds, fixed build errors and corrected a minor exit code error in |
+ pngvalid if the 'touch' file name is invalid. |
+ Add updated WARNING file to projects/vstudio from libpng 1.5/vstudio |
+ Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in |
+ pngrtran.c (Domani Hannes). |
+ |
+Version 1.6.0beta31 [November 1, 2012] |
+ Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30. |
+ Made pngvalid so that it will build outside the libpng source tree. |
+ Made builds -DPNG_NO_READ_GAMMA compile (the unit tests still fail). |
+ Made PNG_NO_READ_GAMMA switch off interfaces that depend on READ_GAMMA. |
+ Prior to 1.6.0 switching off READ_GAMMA did unpredictable things to the |
+ interfaces that use it (specifically, png_do_background in 1.4 would |
+ simply display composite for grayscale images but do composition |
+ with the incorrect arithmetic for color ones). In 1.6 the semantic |
+ of -DPNG_NO_READ_GAMMA is changed to simply disable any interface that |
+ depends on it; this obliges people who set it to consider whether they |
+ really want it off if they happen to use any of the interfaces in |
+ question (typically most users who disable it won't). |
+ Fixed GUIDs in projects/vstudio. Some were duplicated or missing, |
+ resulting in VS2010 having to update the files. |
+ Removed non-working ICC profile support code that was mostly added to |
+ libpng-1.6.0beta29 and beta30. There was too much code for too little |
+ gain; implementing full ICC color correction may be desireable but is left |
+ up to applications. |
+ |
+Version 1.6.0beta32 [November 25, 2012] |
+ Fixed an intermittent SEGV in pngstest due to an uninitialized array element. |
+ Added the ability for contrib/libtests/makepng.c to make a PNG with just one |
+ color. This is useful for debugging pngstest color inaccuracy reports. |
+ Fixed error checking in the simplified write API (Olaf van der Spek) |
+ Made png_user_version_check() ok to use with libpng version 1.10.x and later. |
+ |
+Version 1.6.0beta33 [December 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 useage. |
+ Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test |
+ on __ARM_NEON__ from configure time to compile time. This breaks symbol |
+ prefixing because the definition of the special png_init_filter_functions |
+ call was hidden at configure time if the relevant compiler arguments are |
+ passed in CFLAGS as opposed to CC. This change attempts to avoid all |
+ the confusion that would result by declaring the init function even when |
+ it is not used, so that it will always get prefixed. |
+ |
+Version 1.6.3beta08 [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. |
+ |
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net |
+(subscription required; visit |
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement |
+to subscribe) |
+or to glennrp at users.sourceforge.net |
+ |
+Glenn R-P |
+#endif |