1.1.1 ===== [1] Fixed a 1-pixel error in row 0, column 21 of the luminance plane generated by tjEncodeYUV(). [2] libjpeg-turbo's accelerated Huffman decoder previously ignored unexpected markers found in the middle of the JPEG data stream during decompression. It will now hand off decoding of a particular block to the unaccelerated Huffman decoder if an unexpected marker is found, so that the unaccelerated Huffman decoder can generate an appropriate warning. [3] Older versions of MinGW64 prefixed symbol names with underscores by default, which differed from the behavior of 64-bit Visual C++. MinGW64 1.0 has adopted the behavior of 64-bit Visual C++ as the default, so to accommodate this, the libjpeg-turbo SIMD function names are no longer prefixed with an underscore when building with MinGW64. This means that, when building libjpeg-turbo with older versions of MinGW64, you will now have to add -fno-leading-underscore to the CFLAGS. [4] Fixed a regression bug in the NSIS script that caused the Windows installer build to fail when using the Visual Studio IDE. [5] Fixed a bug in jpeg_read_coefficients() whereby it would not initialize cinfo->image_width and cinfo->image_height if libjpeg v7 or v8 emulation was enabled. This specifically caused the jpegoptim program to fail if it was linked against a version of libjpeg-turbo that was built with libjpeg v7 or v8 emulation. [6] Eliminated excessive I/O overhead that occurred when reading BMP files in cjpeg. [7] Eliminated errors in the output of cjpeg on Windows that occurred when the application was invoked using I/O redirection (cjpeg <inputfile >output.jpg). 1.1.0 ===== [1] The algorithm used by the SIMD quantization function cannot produce correct results when the JPEG quality is >= 98 and the fast integer forward DCT is used. Thus, the non-SIMD quantization function is now used for those cases, and libjpeg-turbo should now produce identical output to libjpeg v6b in all cases. [2] Despite the above, the fast integer forward DCT still degrades somewhat for JPEG qualities greater than 95, so TurboJPEG/OSS will now automatically use the slow integer forward DCT when generating JPEG images of quality 96 or greater. This reduces compression performance by as much as 15% for these high-quality images but is necessary to ensure that the images are perceptually lossless. It also ensures that the library can avoid the performance pitfall created by [1]. [3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler. [4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in the RGB-to-luminance lookup tables. [5] The Windows distribution packages now include the libjpeg run-time programs (cjpeg, etc.) [6] All packages now include jpgtest. [7] The TurboJPEG dynamic library now uses versioned symbols. [8] Added two new TurboJPEG API functions, tjEncodeYUV() and tjDecompressToYUV(), to replace the somewhat hackish TJ_YUV flag. 1.0.90 (1.1 beta1) ================== [1] Added emulation of the libjpeg v7 and v8 APIs and ABIs. See README-turbo.txt for more details. This feature was sponsored by CamTrace SAS. [2] Created a new CMake-based build system for the Visual C++ and MinGW builds. [3] TurboJPEG/OSS can now compress from/decompress to grayscale bitmaps. [4] jpgtest can now be used to test decompression performance with existing JPEG images. [5] If the default install prefix (/opt/libjpeg-turbo) is used, then 'make install' now creates /opt/libjpeg-turbo/lib32 and /opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary packages. [6] All symbols in the libjpeg-turbo dynamic library are now versioned, even when the library is built with libjpeg v6b emulation. [7] Added arithmetic encoding and decoding support (can be disabled with configure or CMake options) [8] Added a TJ_YUV flag to TurboJPEG/OSS which causes both the compressor and decompressor to output planar YUV images. [9] Added an extended version of tjDecompressHeader() to TurboJPEG/OSS which allows the caller to determine the type of subsampling used in a JPEG image. [10] Added further protections against invalid Huffman codes. 1.0.1 ===== [1] The Huffman decoder will now handle erroneous Huffman codes (for instance, from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to crash under certain circumstances. [2] Fixed typo in SIMD dispatch routines which was causing 4:2:2 upsampling to be used instead of 4:2:0 when decompressing JPEG images using SSE2 code. [3] configure script will now automatically determine whether the INCOMPLETE_TYPES_BROKEN macro should be defined. 1.0.0 ===== [1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify --host when configuring on a 64-bit system) [2] Created sym. links in the Unix/Linux packages so that the TurboJPEG include file can always be found in /opt/libjpeg-turbo/include, the 32-bit static libraries can always be found in /opt/libjpeg-turbo/lib32, and the 64-bit static libraries can always be found in /opt/libjpeg-turbo/lib64. [3] The Unix/Linux distribution packages now include the libjpeg run-time programs (cjpeg, etc.) and man pages. [4] Created a 32-bit supplementary package for amd64 Debian systems which contains just the 32-bit libjpeg-turbo libraries. [5] Moved the libraries from */lib32 to */lib in the i386 Debian package. [6] Include distribution package for Cygwin [7] No longer necessary to specify --without-simd on non-x86 architectures, and unit tests now work on those architectures. 0.0.93 ====== [1] 2982659, Fixed x86-64 build on FreeBSD systems [2] 2988188: Added support for Windows 64-bit systems 0.0.91 ====== [1] Added documentation to .deb packages [2] 2968313: Fixed data corruption issues when decompressing large JPEG images and/or using buffered I/O with the libjpeg-turbo decompressor 0.0.90 ====== Initial release
