| pngchange.txt - changes for libpng |
| |
| version 0.2 |
| added reader into png.h |
| fixed small problems in stub file |
| version 0.3 |
| added pull reader |
| split up pngwrite.c to several files |
| added pnglib.txt |
| added example.c |
| cleaned up writer, adding a few new tranformations |
| 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 |
| 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 consistant |
| 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 |
| interfaced with zlib 0.8 |
| fixed many reading and writing bugs |
| saved using 3 spaces instead of tabs |
| version 0.6 |
| 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 |
| cleaned up lots of bugs |
| finished dithering and other stuff |
| added test program |
| changed name from pnglib to libpng |
| version 0.71 |
| changed pngtest.png for zlib 0.93 |
| fixed error in libpng.txt and example.c |
| version 0.8 |
| 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 |
| incorporated Tim Wegner's medium model code (thanks, Tim) |
| version 0.85 |
| added more medium model code (almost everythings 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 |
| fixed bugs |
| improved documentation |
| version 0.87 |
| fixed medium model bugs |
| fixed other bugs introduced in 0.85 and 0.86 |
| added some minor documentation |
| version 0.88 |
| fixed progressive bugs |
| replaced tabs with spaces |
| cleaned up documentation |
| added callbacks for read/write and warning/error functions |
| version 0.89 |
| 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) |
| fixed bug with Borland 64K memory allocation (Alexander Lehmann) |
| fixed bug in interlace handling (Smaraderagd, 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 dcumentation to reflect new API |
