| |
| Libpng 1.0.5q - February 5, 2000 |
| |
| This is not intended to be a public release. It will be replaced |
| within a few weeks by a public version or by another test version. |
| |
| Changes since the last public release (1.0.5): |
| |
| version libpng-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 libpng-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 libpng-1.0.5c November 26, 1999 |
| Moved png_get_header_version from png.h to png.c, to accomodate ansi2knr. |
| Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to |
| accomodate 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 libpng-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". |
| #ifdef out all the new declarations when PNG_USE_GLOBAL_ARRAYS is defined. |
| Added PNG_EXPORT_VAR macro to accommodate making DLL's. |
| version libpng-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 libpng-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 libpng-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 libpng-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. |
| version libpng-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, |
| and relocated it in pngset.c |
| 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 libpng-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: |
| 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. Restored the first |
| four members of png_text to the same order as v.1.0.5d. The "Note" above, |
| about backward incompatibility of libpng-1.0.5e, no longer applies. |
| Added PNG_ITXT_COMPRESSION_NONE (1) and PNG_ITXT_COMPRESSION_zTXt(2) macros. |
| 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 libpng-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() |
| 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 libpng-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 |
| |
| Send comments/corrections/commendations to |
| png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu |
| |
| Glenn R-P |
