| <html><head><title>pngcrush changelog</title></head><body> |
| <pre> |
| |
| Change log: |
| |
| Version 1.6.20 (built with libpng-1.2.38 and zlib-1.2.3.2) |
| Changed local variable "write" to "wwrite" in inffast.c (zlib) to avoid |
| shadowed declaration warning. |
| |
| Version 1.6.19 (built with libpng-1.2.37 and zlib-1.2.3.2) |
| Added missing braces that cause an incorrect png_error() to be issued. |
| |
| Version 1.6.18 (built with libpng-1.2.37 and zlib-1.2.3.2) |
| Removed extra FCLOSE(fpin) and FCLOSE(fpout) in the first Catch{} block, |
| since they get removed anyway right after that (hanno boeck). |
| Define PNG_NO_READ|WRITE_cHRM and PNG_NO_READ_|WRITEiCCP in pngcrush.h |
| and reordered pngcrush.h |
| |
| Version 1.6.17 (built with libpng-1.2.36 and zlib-1.2.3.2) |
| Defined TOO_FAR == 32767 in deflate.c (again). The definition |
| has continually been inadvertently omitted during zlib updates |
| since pngcrush version 1.6.4. |
| Revised handling of xcode files so at least we can get printout |
| of IHDR values with "pngcrush -fix -n -v xcode.png". |
| Moved ChangeLog.txt back into pngcrush.c so it does not get lost. |
| Removed single quotes from the ChangeLog. |
| |
| Version 1.6.16 (built with libpng-1.2.35 and zlib-1.2.3.2) |
| Added -newtimestamp and -oldtimestamp options and changed |
| default condition to timestamping the output file with |
| the current time (i.e., -newtimestamp is default) |
| If the -oldtimestamp option is used then the output file |
| has the same timestamp as the input file. |
| Added CgBI chunk detection. |
| |
| Version 1.6.15 (built with libpng-1.2.35 and zlib-1.2.3.2) |
| Fixes some missing typecasts on png_malloc() calls, patch from |
| an anonymous reporter to the SourceForge bug tracker. |
| Added -time_stamp option to change time stamping from default |
| condition. |
| |
| Version 1.6.14 (built with libpng-1.2.35 and zlib-1.2.3.2) |
| Avoids CVE-2009-0040. |
| |
| Version 1.6.12 (built with libpng-1.2.34 and zlib-1.2.3.2) |
| |
| Version 1.6.11 (built with libpng-1.2.33 and zlib-1.2.3.2) |
| Eliminated a memory leak in libpng with writing bad tEXt chunks. |
| |
| Version 1.6.10 (built with libpng-1.2.31 and zlib-1.2.3.2) |
| Add sTER chunk support. |
| |
| Version 1.6.9 (built with libpng-1.2.31 and zlib-1.2.3.2) |
| Updated cexcept.h to version 2.0.1 |
| Add missing curly brackets. |
| |
| Version 1.6.8 (built with libpng-1.2.29 and zlib-1.2.3.2) |
| Fixed bug with handling of -z and -zi options. |
| |
| Version 1.6.7 (built with libpng-1.2.29 and zlib-1.2.3.2) |
| Moved PNG_UINT_CHNK and some other defines from pngcrush.h to pngcrush.c |
| Reject invalid color_type or bit_depth. |
| |
| Version 1.6.6 (built with libpng-1.2.29 and zlib-1.2.3.2) |
| Added dSIG support. Pngcrush will not rewrite an image containing |
| a dSIG chunk immediately following the IHDR chunk, unless the |
| dSIG is explicitly removed with "-rem dSIG" or explicitly kept |
| with "-keep dSIG". In the latter case the saved dSIG chunks will |
| become invalid if any changes are made to the datastream. |
| |
| Fixed bug in writing unknown chunks from the end_info_ptr. |
| |
| Version 1.6.5 (built with libpng-1.2.29 and zlib-1.2.3.2) |
| Discontinued adding a new gAMA chunk when writing sRGB chunk. |
| |
| Version 1.6.4 (built with libpng-1.2.9rc1 and zlib-1.2.3) |
| Fixed bug in handling of undocumented -trns_a option (Michal Politowski). |
| Fixed bug with "nosave" handling of unknown chunks. |
| |
| Version 1.6.3 (built with libpng-1.2.9beta11 and zlib-1.2.3) |
| |
| Fixed documentation of iTXt input (Shlomi Tal). |
| Removed #define PNG_INTERNAL and provided prototypes for some |
| internal libpng functions that are duplicated in pngcrush.c |
| |
| Version 1.6.2 (built with libpng-1.2.8 and zlib-1.2.3) |
| |
| Fixed bug with "PNG_ROWBYTES" usage, introduced in version 1.6.0. |
| The bug could cause a crash and only affects the "nolib" builds. |
| |
| Converted C++ style (// ...) comments to C style (/* ... */). |
| |
| Defined TOO_FAR == 32767 in deflate.c (again). The definition was |
| omitted from version 1.6.0 when zlib was upgraded to version 1.2.3. |
| |
| Version 1.6.1 (distributed as 1.6.0, built with libpng-1.2.8 and zlib-1.2.3) |
| |
| Copied non-exported libpng functions from libpng into pngcrush, to make |
| pngcrush play more nicely with shared libpng. These are not compiled |
| when a static library is being built with the bundled libpng and |
| pngcrush.h is included. |
| |
| Version 1.6.0-grr (built with libpng-1.2.4 and zlib-1.1.4pc or zlib-1.2.2) |
| |
| Moved ChangeLog out of pngcrush.c comments and into a separate file. |
| |
| Filtered pngcrush.c through "indent -kr" and "expand" for readability. |
| |
| Moved 550 lines of usage/help/copyright/license/version info to separate |
| function(s) and cleaned up significantly. |
| |
| Added some comments for ease of navigation and readability. |
| |
| Stripped out a bunch of ancient-libpng compatibility stuff. |
| |
| Defined PNG_UINT_* macros (pngcrush.h for now). |
| |
| Fixed unknown-chunk handling ("-rem alla" and "-rem gifx" now work). |
| |
| Created modified version of makefile that supports external zlib. |
| |
| Added support for methods using Z_RLE zlib strategy (zlib 1.2.x only). |
| |
| Documented -huffman option in usage screen. |
| |
| Added IDAT statistics to final per-file summary. |
| |
| Added utime() support to give output files same timestamps as input files. |
| |
| Version 1.5.10 (built with libpng-1.2.4 and zlib-1.1.4pc) |
| |
| Fixed bug, introduced in 1.5.9, that caused defaults for method 0 to |
| be used instead of copying the original image, when the original was |
| already smallest. |
| |
| Version 1.5.9 (built with libpng-1.2.4beta3 and zlib-1.1.4pc) |
| |
| Work around CPU timer wraparound at 2G microseconds. |
| |
| Upgraded zlib from 1.1.3 to 1.1.4. Pngcrush is believed not to |
| be vulnerable to the zlib-1.1.3 buffer-overflow bug. |
| |
| Choose the first instance of smallest IDAT instead of the last, |
| for faster final recompression, suggested by TSamuel. |
| |
| Version 1.5.8 (built with libpng-1.2.1) |
| |
| Added -trns_a option for entering a tRNS array. |
| |
| Version 1.5.7 (built with libpng-1.2.0) |
| |
| Added setargv.obj to Makefile.msc to expand wildcards, e.g., *.png |
| |
| Use constant string "pngcrush" instead of argv[0] when appropriate. |
| |
| Only check stats for infile==outfile once per input file, or not at all |
| if "-nofilecheck" option is present or if a directory was created. |
| |
| Fixed bugs with changing bit_depth of grayscale images. |
| |
| Version 1.5.6 (built with libpng-1.0.12) |
| |
| Eliminated extra "Removed the cHNK chunk" messages generated by version |
| 1.5.5 when "-rem alla" or "-rem allb" is used. |
| |
| All unknown chunks including safe-to-copy chunks are now removed in |
| response to the "-rem alla" or "-rem allb" options. |
| |
| Issue a warning if the user tries "-cc" option when it is not supported. |
| |
| Version 1.5.5 (built with libpng-1.0.12) |
| |
| Reset reduce_to_gray and it_is_opaque flags prior to processing each |
| image. |
| |
| Enable removal of safe-to-copy chunks that are being handled as unknown |
| e.g., "-rem time". |
| |
| Version 1.5.4 (built with libpng-1.0.11) |
| |
| Added 262 to the length of uncompressed data when calculating |
| required_window_size, to account for zlib/deflate implementation. |
| |
| Added "-bit_depth n" to the help screen. |
| |
| Call png_set_packing() when increasing bit_depth to 2 or 4. |
| |
| Added warning about not overwriting an existing tRNS chunk. |
| |
| Reduced the memory usage |
| |
| Write 500K IDAT chunks even when system libpng is being used. |
| |
| Ignore all-zero cHRM chunks, with a warning. |
| |
| Version 1.5.3 (built with libpng-1.0.9beta5) |
| |
| Added "-loco" option (writes MNG files with filter_method 64) |
| |
| "-dir" and "-ext" options are no longer mutually exclusive, e.g.: |
| pngcrush -loco -dir Crushed -ext .mng *.png |
| |
| Version 1.5.2 (built with libpng-1.0.9beta1) |
| |
| Added "-iccp" option. |
| |
| Increased the zlib memory level, which improves compression (typically |
| about 1.3 percent for photos) at the expense of increased memory usage. |
| |
| Enabled the "-max max_idat_size" option, even when max_idat_size |
| exceeds the default 1/2 megabyte size. |
| |
| Added missing "png_ptr" argument to png_error() call |
| |
| Added "-loco" option, to enable the LOCO color transformation |
| (R->R-G, G, B->B-G) while writing a MNG with filter_method 64. Undo |
| the transformation and write the regular PNG filter_method (0) if the |
| MNG filter_method 64 is detected. |
| |
| Revised the "-help" output slightly and improved the "-version" output. |
| |
| The "-already[_crushed]" option is now ignored if the "-force" option |
| is present or if chunks are being added, deleted, or modified. |
| |
| Improved "things_have_changed" behavior (now, when set in a particular |
| file, it is not set for all remaining files) |
| |
| Version 1.5.1 (built with libpng-1.0.8) |
| |
| Disabled color counting by default and made it controllable with new |
| -cc and -no_cc commandline arguments. |
| |
| Added some #ifdef PNGCRUSH_COUNT_COLORS around code that needs it. |
| |
| Revised count_colors() attempting to avoid stack corruption that has |
| been observed on RedHat 6.2 |
| |
| Added the word "irrevocably" to the license and changed "without fee" |
| to "without payment of any fee". |
| |
| Version 1.5.0 (built with libpng-1.0.8) |
| |
| After encountering an image with a bad Photoshop iCCP chunk, pngcrush |
| 1.4.5 through 1.4.8 write sRGB and gAMA=45455 chunks in all |
| remaining PNG files on the command line. This has been fixed so the |
| correction is only applied to the particular bad input file. |
| |
| Version 1.4.8 (built with libpng-1.0.8rc1) |
| |
| Detect and remove all-opaque alpha channel. |
| Detect and reduce all-gray truecolor images to grayscale. |
| |
| Version 1.4.7 (built with libpng-1.0.8rc1) |
| |
| Restored the "-ext" option that was inadvertently overridden with |
| a new "-exit" option in version 1.4.6 ("-exit" is used to force an |
| "exit" instead of a "return" from the main program). |
| |
| Version 1.4.6 (built with libpng-1.0.8rc1) |
| |
| Fixed bug in color-counting of noninterlaced images. |
| |
| Added capability of processing multiple rows at a time (disabled by |
| default because it turns out to be no faster). |
| |
| Replaced "return" statements in main() with "exit" statements. |
| Force exit instead of return with "-exit" argument. |
| |
| Added the UCITA disclaimers to the help output. |
| |
| Version 1.4.5 (built with libpng-1.0.7rc2 and cexcept-1.0.0) |
| |
| Added color-counting and palette-building capability (enable by |
| defining PNGCRUSH_COUNT_COLORS). In a future version, this will |
| give pngcrush the ability to reduce RGBA images to indexed-color |
| or grayscale when fewer than 257 RGBA combinations are present, |
| and no color is present that requires 16-bit precision. For now, |
| it only reports the frequencies. |
| |
| Added "-fix" option, for fixing bad CRCs and other correctable |
| conditions. |
| |
| Write sBIT.alpha=1 when adding an opaque alpha channel and sBIT |
| is present. |
| |
| Identify the erroneous 2615-byte sRGB monitor profile being written |
| by Photoshop 5.5, which causes many apps to crash, and replace it with |
| an sRGB chunk. |
| |
| Added a check for input and output on different devices before rejecting |
| the output file as being the same as the input file based on inode. |
| |
| Added some UCITA language to the disclaimer. |
| |
| Version 1.4.4 (built with libpng-1.0.6i and cexcept-0.6.3) |
| |
| Can be built on RISC OS platforms, thanks to Darren Salt. |
| |
| Version 1.4.3 (built with libpng-1.0.6h and cexcept-0.6.3) |
| |
| Reduced scope of Try/Catch blocks to avoid nesting them, and |
| removed returns from within the Try blocks, where they are not |
| allowed. |
| |
| Removed direct access to the png structure when possible, and isolated |
| the remaining direct accesses to the png structure into new |
| png_get_compression_buffer_size(), png_set_compression_buffer_size(), |
| and png_set_unknown_chunk_location() functions that were installed |
| in libpng version 1.0.6g. |
| |
| Version 1.4.2 (built with libpng-1.0.6f and cexcept-0.6.0) |
| |
| Removes extra IDAT chunks (such as found in some POV-ray PNGs) with |
| a warning instead of bailing out (this feature requires libpng-1.0.6f |
| or later, compiled with "#define PNG_ABORT()"). |
| |
| Removed old setjmp interface entirely. |
| |
| Version 1.4.1 (built with libpng-1.0.6e and cexcept-0.6.0) |
| |
| Uses cexcept.h for error handling instead of libpngs built-in |
| setjmp/longjmp mechanism. See http://cexcept.sf.net/ |
| |
| Pngcrush.c will now run when compiled with old versions of libpng back |
| to version 0.96, although some features will not be available. |
| |
| Version 1.4.0 (built with libpng-1.0.6 + libpng-1.0.6-patch-a) |
| |
| Version 1.3.6 (built with libpng-1.0.5v) |
| |
| RGB to Grayscale conversion is more accurate (15-bit instead of 8-bit) |
| and now uses only integer arithmetic. |
| |
| "#ifdefed" out PNG_READ_DITHER |
| |
| Changed "Compressed" to "Uncompressed" in help for -itxt. |
| |
| Stifled some compiler warnings |
| |
| Version 1.3.5 (built with libpng-1.0.5s) |
| |
| Add test on stat_buf.st_size to verify fpin==fpout, because stat in |
| MSVC++6.0 standard version returns stat_buf.st_ino=0 for all files. |
| |
| Revised pngcrush.h to make it easier to control PNG_ZBUF_SIZE and |
| PNG_NO_FLOATING_POINT_SUPPORTED from a makefile. |
| |
| Restored ability to enter "replace_gamma" value as a float even when |
| floating point arithmetic is not enabled. |
| |
| Enabled removing tEXt, zTXt, or iTXt chunks by chunk type, i.e., |
| "-rem tEXt" only removes tEXt chunks, while "-rem text" removes all |
| three types of text chunk. |
| |
| Removed definition of TOO_FAR from pngcrush.h |
| |
| Uses new libpng error handler; if a file has errors, pngcrush now will |
| continue on and compress the remaining files instead of bailing out. |
| |
| Version 1.3.4 (built with libpng-1.0.5m) |
| |
| Do not allow pngcrush to overwrite the input file. |
| |
| Version 1.3.3 (built with libpng-1.0.5m) |
| |
| Restored ability to enter gamma as a float even when floating point |
| arithmetic is not enabled. |
| |
| Version 1.3.2 (built with libpng-1.0.5k) |
| |
| Renamed "dirname" to "directory_name" to avoid conflict with "dirname" |
| that appears in string.h on some platforms. |
| |
| Fixed "PNG_NO_FLOAING_POINT" typo in pngcrush.h |
| |
| "#ifdefed" out parts of the help screen for options that are unsupported. |
| |
| Version 1.3.1 (built with libpng-1.0.5k): Eliminated some spurious warnings |
| that were being issued by libpng-1.0.5j. Added -itxt, -ztxt, and |
| -zitxt descriptions to the help screen. |
| |
| Dropped explicit support for pCAL, hIST, sCAL, sPLT, iCCP, tIME, and |
| cHRM chunks and handle them as unknown but safe-to-copy instead, using |
| new png_handle_as_unknown function available in libpng-1.0.5k. |
| |
| Version 1.3.0 (built with libpng-1.0.5j): Added support for handling |
| unknown chunks. |
| |
| pngcrush is now fixed-point only, unless PNG_NO_FLOATING_POINT_SUPPORTED |
| is undefined in pngcrush.h. |
| |
| Added support for the iCCP, iTXt, sCAL, and sPLT chunks, which |
| are now supported by libpng (since libpng-1.0.5j). None of these have |
| been adequately tested. |
| |
| "#ifdefed" out more unused code (weighted filters and progressive read; |
| this saves about 15k in the size of the executable). |
| |
| Moved the special definitions from pngconf.h into a new pngcrush.h |
| |
| Disallow 256-byte compression window size when writing, to work around |
| an apparent zlib bug. Either deflate was producing incorrect results in a |
| 21x21 4-bit image or inflate was decoding it incorrectly; the uncompressed |
| stream is 252 bytes, which is uncomfortably close to the resulting |
| 256-byte compression window. This workaround can be removed when zlib |
| is fixed. |
| |
| The "-m method" can be used any of the 124 methods, without having to |
| specify the filter, level, and strategy, instead of just the first 10. |
| |
| Version 1.2.1 (built with libpng-1.0.5f): Fixed -srgb parameter so it |
| really does take an argument, and so it continues to use "0" if an |
| integer does not follow the -srgb. |
| |
| Added "-plte_len n" argument for truncating the PLTE. Be sure not to |
| truncate it to less than the greatest index actually appearing in IDAT. |
| |
| Version 1.2.0: Removed registration requirement. Added open source |
| license. Redefined TOO_FAR=32k in deflate.c. |
| |
| Changes prior to going "open source": |
| |
| Version 1.1.8: built with libpng-1.0.5a. Runs OK with pngvcrd.c. |
| |
| Version 1.1.7: added ability to add tEXt/zTXt chunks. Fixed bug with |
| closing a file that was not opened when using "pngcrush -n". Fixed |
| bug with tEXt/zTXt chunks after IDAT not being copied. |
| Added alpha to the displayed palette table. Rebuilt with libpng-1.0.5. |
| |
| Version 1.1.6: fixed bug with one file left open after each image is |
| processed |
| |
| Version 1.1.5: Shorten or remove tRNS chunks that are all opaque or have |
| opaque entries at the end. Added timing report. |
| |
| Version 1.1.4: added ability to restrict brute_force to one or more filter |
| types, compression levels, or compression strategies. |
| |
| </pre> |
| </body></html> |
