Libpng 1.2.2beta4 - March 8, 2002 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 (1.2.1): 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] 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. 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. Send comments/corrections/commendations to png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu Glenn R-P