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diff --git a/ChangeLog.txt b/ChangeLog.txt new file mode 100644 index 0000000..780cc9e --- /dev/null +++ b/ChangeLog.txt @@ -0,0 +1,418 @@ +1.3.0 +===== + +[1] 'make test' now works properly on FreeBSD, and it no longer requires the +md5sum executable to be present on other Un*x platforms. + +[2] Overhauled the packaging system: +-- To avoid conflict with vendor-supplied libjpeg-turbo packages, the +official RPMs and DEBs for libjpeg-turbo have been renamed to +"libjpeg-turbo-official". +-- The TurboJPEG libraries are now located under /opt/libjpeg-turbo in the +official Linux and Mac packages, to avoid conflict with vendor-supplied +packages and also to streamline the packaging system. +-- Release packages are now created with the directory structure defined +by the configure variables "prefix", "bindir", "libdir", etc. (Un*x) or by the +CMAKE_INSTALL_PREFIX variable (Windows.) The exception is that the docs are +always located under the system default documentation directory on Un*x and Mac +systems, and on Windows, the TurboJPEG DLL is always located in the Windows +system directory. +-- To avoid confusion, official libjpeg-turbo packages on Linux/Unix platforms +(except for Mac) will always install the 32-bit libraries in +/opt/libjpeg-turbo/lib32 and the 64-bit libraries in /opt/libjpeg-turbo/lib64. +-- Fixed an issue whereby, in some cases, the libjpeg-turbo executables on Un*x +systems were not properly linking with the shared libraries installed by the +same package. +-- Fixed an issue whereby building the "installer" target on Windows when +WITH_JAVA=1 would fail if the TurboJPEG JAR had not been previously built. +-- Building the "install" target on Windows now installs files into the same +places that the installer does. + +[3] Fixed a Huffman encoder bug that prevented I/O suspension from working +properly. + + +1.2.90 (1.3 beta1) +================== + +[1] Added support for additional scaling factors (3/8, 5/8, 3/4, 7/8, 9/8, 5/4, +11/8, 3/2, 13/8, 7/4, 15/8, and 2) when decompressing. Note that the IDCT will +not be SIMD-accelerated when using any of these new scaling factors. + +[2] The TurboJPEG dynamic library is now versioned. It was not strictly +necessary to do so, because TurboJPEG uses versioned symbols, and if a function +changes in an ABI-incompatible way, that function is renamed and a legacy +function is provided to maintain backward compatibility. However, certain +Linux distro maintainers have a policy against accepting any library that isn't +versioned. + +[3] Extended the TurboJPEG Java API so that it can be used to compress a JPEG +image from and decompress a JPEG image to an arbitrary position in a large +image buffer. + +[4] The tjDecompressToYUV() function now supports the TJFLAG_FASTDCT flag. + +[5] The 32-bit supplementary package for amd64 Debian systems now provides +symlinks in /usr/lib/i386-linux-gnu for the TurboJPEG libraries in /usr/lib32. +This allows those libraries to be used on MultiArch-compatible systems (such as +Ubuntu 11 and later) without setting the linker path. + +[6] The TurboJPEG Java wrapper should now find the JNI library on Mac systems +without having to pass -Djava.library.path=/usr/lib to java. + +[7] TJBench has been ported to Java to provide a convenient way of validating +the performance of the TurboJPEG Java API. It can be run with +'java -cp turbojpeg.jar TJBench'. + +[8] cjpeg can now be used to generate JPEG files with the RGB colorspace +(feature ported from jpeg-8d.) + +[9] The width and height in the -crop argument passed to jpegtran can now be +suffixed with "f" to indicate that, when the upper left corner of the cropping +region is automatically moved to the nearest iMCU boundary, the bottom right +corner should be moved by the same amount. In other words, this feature causes +jpegtran to strictly honor the specified width/height rather than the specified +bottom right corner (feature ported from jpeg-8d.) + +[10] JPEG files using the RGB colorspace can now be decompressed into grayscale +images (feature ported from jpeg-8d.) + +[11] Fixed a regression caused by 1.2.1[7] whereby the build would fail with +multiple "Mismatch in operand sizes" errors when attempting to build the x86 +SIMD code with NASM 0.98. + +[12] The in-memory source/destination managers (jpeg_mem_src() and +jpeg_mem_dest()) are now included by default when building libjpeg-turbo with +libjpeg v6b or v7 emulation, so that programs can take advantage of these +functions without requiring the use of the backward-incompatible libjpeg v8 +ABI. The "age number" of the libjpeg-turbo library on Un*x systems has been +incremented by 1 to reflect this. You can disable this feature with a +configure/CMake switch in order to retain strict API/ABI compatibility with the +libjpeg v6b or v7 API/ABI (or with previous versions of libjpeg-turbo.) See +README-turbo.txt for more details. + +[13] Added ARM v7s architecture to libjpeg.a and libturbojpeg.a in the official +libjpeg-turbo binary package for OS X, so that those libraries can be used to +build applications that leverage the faster CPUs in the iPhone 5 and iPad 4. + + +1.2.1 +===== + +[1] Creating or decoding a JPEG file that uses the RGB colorspace should now +properly work when the input or output colorspace is one of the libjpeg-turbo +colorspace extensions. + +[2] When libjpeg-turbo was built without SIMD support and merged (non-fancy) +upsampling was used along with an alpha-enabled colorspace during +decompression, the unused byte of the decompressed pixels was not being set to +0xFF. This has been fixed. TJUnitTest has also been extended to test for the +correct behavior of the colorspace extensions when merged upsampling is used. + +[3] Fixed a bug whereby the libjpeg-turbo SSE2 SIMD code would not preserve the +upper 64 bits of xmm6 and xmm7 on Win64 platforms, which violated the Win64 +calling conventions. + +[4] Fixed a regression caused by 1.2.0[6] whereby decompressing corrupt JPEG +images (specifically, images in which the component count was erroneously set +to a large value) would cause libjpeg-turbo to segfault. + +[5] Worked around a severe performance issue with "Bobcat" (AMD Embedded APU) +processors. The MASKMOVDQU instruction, which was used by the libjpeg-turbo +SSE2 SIMD code, is apparently implemented in microcode on AMD processors, and +it is painfully slow on Bobcat processors in particular. Eliminating the use +of this instruction improved performance by an order of magnitude on Bobcat +processors and by a small amount (typically 5%) on AMD desktop processors. + +[6] Added SIMD acceleration for performing 4:2:2 upsampling on NEON-capable ARM +platforms. This speeds up the decompression of 4:2:2 JPEGs by 20-25% on such +platforms. + +[7] Fixed a regression caused by 1.2.0[2] whereby, on Linux/x86 platforms +running the 32-bit SSE2 SIMD code in libjpeg-turbo, decompressing a 4:2:0 or +4:2:2 JPEG image into a 32-bit (RGBX, BGRX, etc.) buffer without using fancy +upsampling would produce several incorrect columns of pixels at the right-hand +side of the output image if each row in the output image was not evenly +divisible by 16 bytes. + +[8] Fixed an issue whereby attempting to build the SIMD extensions with Xcode +4.3 on OS X platforms would cause NASM to return numerous errors of the form +"'%define' expects a macro identifier". + +[9] Added flags to the TurboJPEG API that allow the caller to force the use of +either the fast or the accurate DCT/IDCT algorithms in the underlying codec. + + +1.2.0 +===== + +[1] Fixed build issue with YASM on Unix systems (the libjpeg-turbo build system +was not adding the current directory to the assembler include path, so YASM +was not able to find jsimdcfg.inc.) + +[2] Fixed out-of-bounds read in SSE2 SIMD code that occurred when decompressing +a JPEG image to a bitmap buffer whose size was not a multiple of 16 bytes. +This was more of an annoyance than an actual bug, since it did not cause any +actual run-time problems, but the issue showed up when running libjpeg-turbo in +valgrind. See http://crbug.com/72399 for more information. + +[3] Added a compile-time macro (LIBJPEG_TURBO_VERSION) that can be used to +check the version of libjpeg-turbo against which an application was compiled. + +[4] Added new RGBA/BGRA/ABGR/ARGB colorspace extension constants (libjpeg API) +and pixel formats (TurboJPEG API), which allow applications to specify that, +when decompressing to a 4-component RGB buffer, the unused byte should be set +to 0xFF so that it can be interpreted as an opaque alpha channel. + +[5] Fixed regression issue whereby DevIL failed to build against libjpeg-turbo +because libjpeg-turbo's distributed version of jconfig.h contained an INLINE +macro, which conflicted with a similar macro in DevIL. This macro is used only +internally when building libjpeg-turbo, so it was moved into config.h. + +[6] libjpeg-turbo will now correctly decompress erroneous CMYK/YCCK JPEGs whose +K component is assigned a component ID of 1 instead of 4. Although these files +are in violation of the spec, other JPEG implementations handle them +correctly. + +[7] Added ARM v6 and ARM v7 architectures to libjpeg.a and libturbojpeg.a in +the official libjpeg-turbo binary package for OS X, so that those libraries can +be used to build both OS X and iOS applications. + + +1.1.90 (1.2 beta1) +================== + +[1] Added a Java wrapper for the TurboJPEG API. See java/README for more +details. + +[2] The TurboJPEG API can now be used to scale down images during +decompression. + +[3] Added SIMD routines for RGB-to-grayscale color conversion, which +significantly improves the performance of grayscale JPEG compression from an +RGB source image. + +[4] Improved the performance of the C color conversion routines, which are used +on platforms for which SIMD acceleration is not available. + +[5] Added a function to the TurboJPEG API that performs lossless transforms. +This function is implemented using the same back end as jpegtran, but it +performs transcoding entirely in memory and allows multiple transforms and/or +crop operations to be batched together, so the source coefficients only need to +be read once. This is useful when generating image tiles from a single source +JPEG. + +[6] Added tests for the new TurboJPEG scaled decompression and lossless +transform features to tjbench (the TurboJPEG benchmark, formerly called +"jpgtest".) + +[7] Added support for 4:4:0 (transposed 4:2:2) subsampling in TurboJPEG, which +was necessary in order for it to read 4:2:2 JPEG files that had been losslessly +transposed or rotated 90 degrees. + +[8] All legacy VirtualGL code has been re-factored, and this has allowed +libjpeg-turbo, in its entirety, to be re-licensed under a BSD-style license. + +[9] libjpeg-turbo can now be built with YASM. + +[10] Added SIMD acceleration for ARM Linux and iOS platforms that support +NEON instructions. + +[11] Refactored the TurboJPEG C API and documented it using Doxygen. The +TurboJPEG 1.2 API uses pixel formats to define the size and component order of +the uncompressed source/destination images, and it includes a more efficient +version of TJBUFSIZE() that computes a worst-case JPEG size based on the level +of chrominance subsampling. The refactored implementation of the TurboJPEG API +now uses the libjpeg memory source and destination managers, which allows the +TurboJPEG compressor to grow the JPEG buffer as necessary. + +[12] Eliminated errors in the output of jpegtran on Windows that occurred when +the application was invoked using I/O redirection +(jpegtran <input.jpg >output.jpg). + +[13] The inclusion of libjpeg v7 and v8 emulation as well as arithmetic coding +support in libjpeg-turbo v1.1.0 introduced several new error constants in +jerror.h, and these were mistakenly enabled for all emulation modes, causing +the error enum in libjpeg-turbo to sometimes have different values than the +same enum in libjpeg. This represents an ABI incompatibility, and it caused +problems with rare applications that took specific action based on a particular +error value. The fix was to include the new error constants conditionally +based on whether libjpeg v7 or v8 emulation was enabled. + +[14] Fixed an issue whereby Windows applications that used libjpeg-turbo would +fail to compile if the Windows system headers were included before jpeglib.h. +This issue was caused by a conflict in the definition of the INT32 type. + +[15] Fixed 32-bit supplementary package for amd64 Debian systems, which was +broken by enhancements to the packaging system in 1.1. + +[16] When decompressing a JPEG image using an output colorspace of +JCS_EXT_RGBX, JCS_EXT_BGRX, JCS_EXT_XBGR, or JCS_EXT_XRGB, libjpeg-turbo will +now set the unused byte to 0xFF, which allows applications to interpret that +byte as an alpha channel (0xFF = opaque). + + +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 the TurboJPEG wrapper 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] Grayscale bitmaps can now be compressed from/decompressed to using the +TurboJPEG API. + +[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 the TurboJPEG API, which causes both the compressor +and decompressor to output planar YUV images. + +[9] Added an extended version of tjDecompressHeader() to the TurboJPEG API, +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 that 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 symlinks 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 |