DRC | f610d61 | 2013-04-26 10:33:29 +0000 | [diff] [blame] | 1 | 1.4 pre-beta |
| 2 | ============ |
| 3 | |
DRC | fc26b65 | 2014-03-16 22:56:26 +0000 | [diff] [blame] | 4 | [1] New features in the TurboJPEG API: |
| 5 | -- YUV planar images can now be generated with an arbitrary line padding |
| 6 | (previously only 4-byte padding, which was compatible with X Video, was |
| 7 | supported.) |
| 8 | -- The decompress-to-YUV function has been extended to support image scaling. |
| 9 | -- JPEG images can now be compressed from YUV planar source images. |
| 10 | -- YUV planar images can now be decoded into RGB or grayscale images. |
| 11 | -- 4:1:1 subsampling is now supported. This is mainly included for |
| 12 | compatibility, since 4:1:1 is not fully accelerated in libjpeg-turbo and has no |
| 13 | significant advantages relative to 4:2:0. |
| 14 | -- CMYK images are now supported. This feature allows CMYK source images to be |
| 15 | compressed to YCCK JPEGs and YCCK or CMYK JPEGs to be decompressed to CMYK |
| 16 | destination images. Conversion between CMYK and RGB or YUV images is not |
| 17 | supported. Such conversion requires a color management system and is out of |
| 18 | scope for a codec library. |
| 19 | -- The handling of YUV images in the Java API has been significantly refactored |
| 20 | and should now be much more intuitive. |
| 21 | -- The Java API now supports encoding a YUV image from an arbitrary position in |
| 22 | a large image buffer. |
DRC | f610d61 | 2013-04-26 10:33:29 +0000 | [diff] [blame] | 23 | |
DRC | a6b7fbd | 2013-09-30 18:13:27 +0000 | [diff] [blame] | 24 | [2] Added SIMD acceleration for DSPr2-capable MIPS platforms. This speeds up |
DRC | d64e23e | 2013-10-08 02:32:07 +0000 | [diff] [blame] | 25 | the compression of full-color JPEGs by 70-80% on such platforms and |
| 26 | decompression by 25-35%. |
DRC | 0be9fa5 | 2013-07-24 21:50:20 +0000 | [diff] [blame] | 27 | |
DRC | fc26b65 | 2014-03-16 22:56:26 +0000 | [diff] [blame] | 28 | [3] If an application attempts to decompress a Huffman-coded JPEG image whose |
DRC | a113506 | 2014-01-31 17:22:15 +0000 | [diff] [blame] | 29 | header does not contain Huffman tables, libjpeg-turbo will now insert the |
| 30 | default Huffman tables. In order to save space, many motion JPEG video frames |
| 31 | are encoded without the default Huffman tables, so these frames can now be |
| 32 | successfully decompressed by libjpeg-turbo without additional work on the part |
| 33 | of the application. An application can still override the Huffman tables, for |
| 34 | instance to re-use tables from a previous frame of the same video. |
| 35 | |
DRC | b1068fa | 2014-03-23 17:53:07 +0000 | [diff] [blame] | 36 | [4] The Mac packaging system now uses pkgbuild and productbuild rather than |
| 37 | PackageMaker (which is obsolete and no longer supported.) This means that |
| 38 | OS X 10.6 "Snow Leopard" or later must be used when packaging libjpeg-turbo, |
| 39 | although the packages produced can be installed on OS X 10.5 "Leopard" or |
| 40 | later. OS X 10.4 "Tiger" is no longer supported. |
| 41 | |
DRC | 0cfc4c1 | 2014-03-28 18:33:25 +0000 | [diff] [blame] | 42 | [5] The Huffman encoder now uses clz and bsr instructions for bit counting on |
| 43 | ARM platforms rather than a lookup table. This reduces the memory footprint |
| 44 | by 64k, which may be important for some mobile applications. Out of four |
DRC | fdd625e | 2014-04-15 03:07:44 +0000 | [diff] [blame] | 45 | Android devices that were tested, two demonstrated a small overall performance |
| 46 | loss (~3-4% on average) with ARMv6 code and a small gain (also ~3-4%) with |
| 47 | ARMv7 code when enabling this new feature, but the other two devices |
| 48 | demonstrated a significant overall performance gain with both ARMv6 and ARMv7 |
| 49 | code (~10-20%.) Actual mileage may vary. |
DRC | 0cfc4c1 | 2014-03-28 18:33:25 +0000 | [diff] [blame] | 50 | |
DRC | 0816d08 | 2014-04-20 06:57:52 +0000 | [diff] [blame] | 51 | [6] Worked around an issue with Visual C++ 2010 and later that caused incorrect |
DRC | beb0b33 | 2014-04-20 07:36:33 +0000 | [diff] [blame] | 52 | pixels to be generated when decompressing a JPEG image to a 256-color bitmap, |
| 53 | if compiler optimization was enabled when libjpeg-turbo was built. This caused |
| 54 | the regression tests to fail when doing a release build under Visual C++ 2010 |
| 55 | and later. |
| 56 | |
DRC | 715bb41 | 2014-05-11 10:09:07 +0000 | [diff] [blame] | 57 | [7] Improved the accuracy and performance of the non-SIMD implementation of the |
| 58 | floating point inverse DCT (using code borrowed from libjpeg v8a and later.) |
| 59 | The accuracy of this implementation now matches the accuracy of the SSE/SSE2 |
| 60 | implementation. Note, however, that the floating point DCT/IDCT algorithms are |
| 61 | mainly a legacy feature. They generally do not produce significantly better |
| 62 | accuracy than the slow integer DCT/IDCT algorithms, and they are quite a bit |
| 63 | slower. |
| 64 | |
DRC | 78df2e6 | 2014-05-12 09:23:57 +0000 | [diff] [blame] | 65 | [8] Added a new output colorspace (JCS_RGB565) to the libjpeg API that allows |
| 66 | for decompressing JPEG images into RGB565 (16-bit) pixels. |
| 67 | |
DRC | 5033f3e | 2014-05-18 18:33:44 +0000 | [diff] [blame] | 68 | [9] Numerous obsolete features, such as support for compilers that can't |
| 69 | handle prototypes and support for the MS-DOS memory model, were removed from |
| 70 | the libjpeg code, greatly improving its readability and making it easier to |
| 71 | maintain and extend. |
| 72 | |
DRC | f610d61 | 2013-04-26 10:33:29 +0000 | [diff] [blame] | 73 | |
DRC | 96573d0 | 2013-08-11 23:23:41 +0000 | [diff] [blame] | 74 | 1.3.1 |
| 75 | ===== |
| 76 | |
| 77 | [1] On Un*x systems, 'make install' now installs the libjpeg-turbo libraries |
| 78 | into /opt/libjpeg-turbo/lib32 by default on any 32-bit system, not just x86, |
| 79 | and into /opt/libjpeg-turbo/lib64 by default on any 64-bit system, not just |
| 80 | x86-64. You can override this by overriding either the 'prefix' or 'libdir' |
| 81 | configure variables. |
| 82 | |
DRC | 4d87793 | 2013-09-19 22:55:57 +0000 | [diff] [blame] | 83 | [2] The Windows installer now places a copy of the TurboJPEG DLLs in the same |
| 84 | directory as the rest of the libjpeg-turbo binaries. This was mainly done |
| 85 | to support TurboVNC 1.3, which bundles the DLLs in its Windows installation. |
| 86 | When using a 32-bit version of CMake on 64-bit Windows, it is impossible to |
| 87 | access the c:\WINDOWS\system32 directory, which made it impossible for the |
| 88 | TurboVNC build scripts to bundle the 64-bit TurboJPEG DLL. |
| 89 | |
DRC | cadabd4 | 2013-09-28 03:10:31 +0000 | [diff] [blame] | 90 | [3] Fixed a bug whereby attempting to encode a progressive JPEG with arithmetic |
| 91 | entropy coding (by passing arguments of -progressive -arithmetic to cjpeg or |
| 92 | jpegtran, for instance) would result in an error, "Requested feature was |
| 93 | omitted at compile time". |
DRC | 1370f10 | 2013-09-24 03:21:38 +0000 | [diff] [blame] | 94 | |
DRC | 7ebf294 | 2013-11-21 18:32:48 +0000 | [diff] [blame] | 95 | [4] Fixed a couple of issues whereby malformed JPEG images would cause |
DRC | 43d8cf4 | 2013-11-21 18:34:39 +0000 | [diff] [blame] | 96 | libjpeg-turbo to use uninitialized memory during decompression. |
| 97 | |
DRC | 38c9970 | 2014-02-11 09:45:18 +0000 | [diff] [blame] | 98 | [5] Fixed an error ("Buffer passed to JPEG library is too small") that occurred |
| 99 | when calling the TurboJPEG YUV encoding function with a very small (< 5x5) |
| 100 | source image, and added a unit test to check for this error. |
| 101 | |
DRC | d45c549 | 2014-03-11 06:21:46 +0000 | [diff] [blame] | 102 | [6] The Java classes should now build properly under Visual Studio 2010 and |
| 103 | later. |
| 104 | |
DRC | de23dd8 | 2014-03-22 20:43:03 +0000 | [diff] [blame] | 105 | [7] Fixed an issue that prevented SRPMs generated using the in-tree packaging |
| 106 | tools from being rebuilt on certain newer Linux distributions. |
| 107 | |
| 108 | [8] Numerous minor fixes to eliminate compilation and build/packaging system |
| 109 | warnings, fix cosmetic issues, improve documentation clarity, and other general |
| 110 | source cleanup. |
| 111 | |
DRC | 96573d0 | 2013-08-11 23:23:41 +0000 | [diff] [blame] | 112 | |
DRC | 0bf58f2 | 2013-02-06 23:51:08 +0000 | [diff] [blame] | 113 | 1.3.0 |
| 114 | ===== |
| 115 | |
| 116 | [1] 'make test' now works properly on FreeBSD, and it no longer requires the |
| 117 | md5sum executable to be present on other Un*x platforms. |
| 118 | |
DRC | d7a642b | 2013-04-24 06:40:25 +0000 | [diff] [blame] | 119 | [2] Overhauled the packaging system: |
DRC | 764e1e2 | 2013-04-19 04:25:14 +0000 | [diff] [blame] | 120 | -- To avoid conflict with vendor-supplied libjpeg-turbo packages, the |
| 121 | official RPMs and DEBs for libjpeg-turbo have been renamed to |
DRC | d7a642b | 2013-04-24 06:40:25 +0000 | [diff] [blame] | 122 | "libjpeg-turbo-official". |
| 123 | -- The TurboJPEG libraries are now located under /opt/libjpeg-turbo in the |
| 124 | official Linux and Mac packages, to avoid conflict with vendor-supplied |
| 125 | packages and also to streamline the packaging system. |
| 126 | -- Release packages are now created with the directory structure defined |
| 127 | by the configure variables "prefix", "bindir", "libdir", etc. (Un*x) or by the |
| 128 | CMAKE_INSTALL_PREFIX variable (Windows.) The exception is that the docs are |
| 129 | always located under the system default documentation directory on Un*x and Mac |
| 130 | systems, and on Windows, the TurboJPEG DLL is always located in the Windows |
| 131 | system directory. |
DRC | 764e1e2 | 2013-04-19 04:25:14 +0000 | [diff] [blame] | 132 | -- To avoid confusion, official libjpeg-turbo packages on Linux/Unix platforms |
| 133 | (except for Mac) will always install the 32-bit libraries in |
| 134 | /opt/libjpeg-turbo/lib32 and the 64-bit libraries in /opt/libjpeg-turbo/lib64. |
DRC | d7a642b | 2013-04-24 06:40:25 +0000 | [diff] [blame] | 135 | -- Fixed an issue whereby, in some cases, the libjpeg-turbo executables on Un*x |
| 136 | systems were not properly linking with the shared libraries installed by the |
| 137 | same package. |
| 138 | -- Fixed an issue whereby building the "installer" target on Windows when |
| 139 | WITH_JAVA=1 would fail if the TurboJPEG JAR had not been previously built. |
| 140 | -- Building the "install" target on Windows now installs files into the same |
| 141 | places that the installer does. |
DRC | 764e1e2 | 2013-04-19 04:25:14 +0000 | [diff] [blame] | 142 | |
DRC | 4c17a45 | 2013-04-25 08:55:31 +0000 | [diff] [blame] | 143 | [3] Fixed a Huffman encoder bug that prevented I/O suspension from working |
| 144 | properly. |
| 145 | |
DRC | 0bf58f2 | 2013-02-06 23:51:08 +0000 | [diff] [blame] | 146 | |
DRC | 84f7122 | 2012-12-31 09:44:31 +0000 | [diff] [blame] | 147 | 1.2.90 (1.3 beta1) |
| 148 | ================== |
DRC | 27fb3fc | 2012-01-28 01:48:07 +0000 | [diff] [blame] | 149 | |
| 150 | [1] Added support for additional scaling factors (3/8, 5/8, 3/4, 7/8, 9/8, 5/4, |
DRC | ffe4fc1 | 2012-03-16 14:30:46 +0000 | [diff] [blame] | 151 | 11/8, 3/2, 13/8, 7/4, 15/8, and 2) when decompressing. Note that the IDCT will |
| 152 | not be SIMD-accelerated when using any of these new scaling factors. |
DRC | 27fb3fc | 2012-01-28 01:48:07 +0000 | [diff] [blame] | 153 | |
DRC | 575317b | 2012-06-15 22:00:47 +0000 | [diff] [blame] | 154 | [2] The TurboJPEG dynamic library is now versioned. It was not strictly |
DRC | fd40777 | 2012-03-23 03:24:39 +0000 | [diff] [blame] | 155 | necessary to do so, because TurboJPEG uses versioned symbols, and if a function |
| 156 | changes in an ABI-incompatible way, that function is renamed and a legacy |
| 157 | function is provided to maintain backward compatibility. However, certain |
DRC | 5a84a0e | 2013-02-14 07:31:35 +0000 | [diff] [blame] | 158 | Linux distro maintainers have a policy against accepting any library that isn't |
| 159 | versioned. |
DRC | fd40777 | 2012-03-23 03:24:39 +0000 | [diff] [blame] | 160 | |
DRC | fac3bea | 2012-09-24 02:27:55 +0000 | [diff] [blame] | 161 | [3] Extended the TurboJPEG Java API so that it can be used to compress a JPEG |
| 162 | image from and decompress a JPEG image to an arbitrary position in a large |
| 163 | image buffer. |
DRC | 575317b | 2012-06-15 22:00:47 +0000 | [diff] [blame] | 164 | |
DRC | 2186809 | 2012-07-03 20:02:49 +0000 | [diff] [blame] | 165 | [4] The tjDecompressToYUV() function now supports the TJFLAG_FASTDCT flag. |
DRC | e0419b5 | 2012-07-03 20:01:31 +0000 | [diff] [blame] | 166 | |
DRC | a394bf7 | 2012-08-07 18:44:24 +0000 | [diff] [blame] | 167 | [5] The 32-bit supplementary package for amd64 Debian systems now provides |
DRC | 0a0f8d1 | 2012-08-07 18:42:07 +0000 | [diff] [blame] | 168 | symlinks in /usr/lib/i386-linux-gnu for the TurboJPEG libraries in /usr/lib32. |
| 169 | This allows those libraries to be used on MultiArch-compatible systems (such as |
| 170 | Ubuntu 11 and later) without setting the linker path. |
| 171 | |
DRC | 61e1341 | 2012-08-24 02:44:39 +0000 | [diff] [blame] | 172 | [6] The TurboJPEG Java wrapper should now find the JNI library on Mac systems |
| 173 | without having to pass -Djava.library.path=/usr/lib to java. |
| 174 | |
DRC | d9d1d67 | 2012-10-02 04:20:43 +0000 | [diff] [blame] | 175 | [7] TJBench has been ported to Java to provide a convenient way of validating |
| 176 | the performance of the TurboJPEG Java API. It can be run with |
| 177 | 'java -cp turbojpeg.jar TJBench'. |
| 178 | |
DRC | f73a27c | 2013-01-01 10:25:43 +0000 | [diff] [blame] | 179 | [8] cjpeg can now be used to generate JPEG files with the RGB colorspace |
| 180 | (feature ported from jpeg-8d.) |
| 181 | |
DRC | 8cbf893 | 2013-01-01 10:44:00 +0000 | [diff] [blame] | 182 | [9] The width and height in the -crop argument passed to jpegtran can now be |
| 183 | suffixed with "f" to indicate that, when the upper left corner of the cropping |
| 184 | region is automatically moved to the nearest iMCU boundary, the bottom right |
| 185 | corner should be moved by the same amount. In other words, this feature causes |
| 186 | jpegtran to strictly honor the specified width/height rather than the specified |
| 187 | bottom right corner (feature ported from jpeg-8d.) |
| 188 | |
DRC | f37e4da | 2013-01-01 10:52:29 +0000 | [diff] [blame] | 189 | [10] JPEG files using the RGB colorspace can now be decompressed into grayscale |
| 190 | images (feature ported from jpeg-8d.) |
| 191 | |
DRC | 00c2cf3 | 2013-01-13 12:12:53 +0000 | [diff] [blame] | 192 | [11] Fixed a regression caused by 1.2.1[7] whereby the build would fail with |
DRC | b87a0b4 | 2013-01-13 12:15:58 +0000 | [diff] [blame] | 193 | multiple "Mismatch in operand sizes" errors when attempting to build the x86 |
| 194 | SIMD code with NASM 0.98. |
| 195 | |
DRC | ab70623 | 2013-01-18 23:42:31 +0000 | [diff] [blame] | 196 | [12] The in-memory source/destination managers (jpeg_mem_src() and |
| 197 | jpeg_mem_dest()) are now included by default when building libjpeg-turbo with |
| 198 | libjpeg v6b or v7 emulation, so that programs can take advantage of these |
| 199 | functions without requiring the use of the backward-incompatible libjpeg v8 |
| 200 | ABI. The "age number" of the libjpeg-turbo library on Un*x systems has been |
| 201 | incremented by 1 to reflect this. You can disable this feature with a |
| 202 | configure/CMake switch in order to retain strict API/ABI compatibility with the |
| 203 | libjpeg v6b or v7 API/ABI (or with previous versions of libjpeg-turbo.) See |
| 204 | README-turbo.txt for more details. |
| 205 | |
DRC | a2a2cd6 | 2013-02-04 22:29:57 +0000 | [diff] [blame] | 206 | [13] Added ARM v7s architecture to libjpeg.a and libturbojpeg.a in the official |
| 207 | libjpeg-turbo binary package for OS X, so that those libraries can be used to |
| 208 | build applications that leverage the faster CPUs in the iPhone 5 and iPad 4. |
| 209 | |
DRC | 575317b | 2012-06-15 22:00:47 +0000 | [diff] [blame] | 210 | |
| 211 | 1.2.1 |
| 212 | ===== |
| 213 | |
| 214 | [1] Creating or decoding a JPEG file that uses the RGB colorspace should now |
| 215 | properly work when the input or output colorspace is one of the libjpeg-turbo |
| 216 | colorspace extensions. |
| 217 | |
| 218 | [2] When libjpeg-turbo was built without SIMD support and merged (non-fancy) |
| 219 | upsampling was used along with an alpha-enabled colorspace during |
| 220 | decompression, the unused byte of the decompressed pixels was not being set to |
| 221 | 0xFF. This has been fixed. TJUnitTest has also been extended to test for the |
| 222 | correct behavior of the colorspace extensions when merged upsampling is used. |
| 223 | |
| 224 | [3] Fixed a bug whereby the libjpeg-turbo SSE2 SIMD code would not preserve the |
DRC | 4f24016 | 2012-04-26 19:50:37 +0000 | [diff] [blame] | 225 | upper 64 bits of xmm6 and xmm7 on Win64 platforms, which violated the Win64 |
| 226 | calling conventions. |
| 227 | |
DRC | 575317b | 2012-06-15 22:00:47 +0000 | [diff] [blame] | 228 | [4] Fixed a regression caused by 1.2.0[6] whereby decompressing corrupt JPEG |
DRC | dd2b651 | 2012-05-30 20:36:42 +0000 | [diff] [blame] | 229 | images (specifically, images in which the component count was erroneously set |
| 230 | to a large value) would cause libjpeg-turbo to segfault. |
| 231 | |
DRC | 575317b | 2012-06-15 22:00:47 +0000 | [diff] [blame] | 232 | [5] Worked around a severe performance issue with "Bobcat" (AMD Embedded APU) |
DRC | 6979927 | 2012-06-13 01:21:29 +0000 | [diff] [blame] | 233 | processors. The MASKMOVDQU instruction, which was used by the libjpeg-turbo |
| 234 | SSE2 SIMD code, is apparently implemented in microcode on AMD processors, and |
| 235 | it is painfully slow on Bobcat processors in particular. Eliminating the use |
| 236 | of this instruction improved performance by an order of magnitude on Bobcat |
| 237 | processors and by a small amount (typically 5%) on AMD desktop processors. |
| 238 | |
DRC | 575317b | 2012-06-15 22:00:47 +0000 | [diff] [blame] | 239 | [6] Added SIMD acceleration for performing 4:2:2 upsampling on NEON-capable ARM |
| 240 | platforms. This speeds up the decompression of 4:2:2 JPEGs by 20-25% on such |
| 241 | platforms. |
| 242 | |
DRC | de37e07 | 2012-06-18 00:08:18 +0000 | [diff] [blame] | 243 | [7] Fixed a regression caused by 1.2.0[2] whereby, on Linux/x86 platforms |
| 244 | running the 32-bit SSE2 SIMD code in libjpeg-turbo, decompressing a 4:2:0 or |
| 245 | 4:2:2 JPEG image into a 32-bit (RGBX, BGRX, etc.) buffer without using fancy |
| 246 | upsampling would produce several incorrect columns of pixels at the right-hand |
| 247 | side of the output image if each row in the output image was not evenly |
| 248 | divisible by 16 bytes. |
DRC | 8126d0c | 2012-06-15 21:54:45 +0000 | [diff] [blame] | 249 | |
DRC | 112a0bb | 2012-06-28 23:25:34 +0000 | [diff] [blame] | 250 | [8] Fixed an issue whereby attempting to build the SIMD extensions with Xcode |
| 251 | 4.3 on OS X platforms would cause NASM to return numerous errors of the form |
| 252 | "'%define' expects a macro identifier". |
| 253 | |
DRC | 73d74c1 | 2012-06-29 23:46:38 +0000 | [diff] [blame] | 254 | [9] Added flags to the TurboJPEG API that allow the caller to force the use of |
| 255 | either the fast or the accurate DCT/IDCT algorithms in the underlying codec. |
| 256 | |
DRC | 27fb3fc | 2012-01-28 01:48:07 +0000 | [diff] [blame] | 257 | |
DRC | 1ca924a | 2011-11-29 08:58:27 +0000 | [diff] [blame] | 258 | 1.2.0 |
| 259 | ===== |
| 260 | |
| 261 | [1] Fixed build issue with YASM on Unix systems (the libjpeg-turbo build system |
| 262 | was not adding the current directory to the assembler include path, so YASM |
| 263 | was not able to find jsimdcfg.inc.) |
| 264 | |
DRC | ebfe9e4 | 2011-12-01 10:58:36 +0000 | [diff] [blame] | 265 | [2] Fixed out-of-bounds read in SSE2 SIMD code that occurred when decompressing |
| 266 | a JPEG image to a bitmap buffer whose size was not a multiple of 16 bytes. |
| 267 | This was more of an annoyance than an actual bug, since it did not cause any |
| 268 | actual run-time problems, but the issue showed up when running libjpeg-turbo in |
| 269 | valgrind. See http://crbug.com/72399 for more information. |
| 270 | |
DRC | ab64b62 | 2011-12-18 16:29:35 +0000 | [diff] [blame] | 271 | [3] Added a compile-time macro (LIBJPEG_TURBO_VERSION) that can be used to |
| 272 | check the version of libjpeg-turbo against which an application was compiled. |
| 273 | |
DRC | 67ce3b2 | 2011-12-19 02:21:03 +0000 | [diff] [blame] | 274 | [4] Added new RGBA/BGRA/ABGR/ARGB colorspace extension constants (libjpeg API) |
| 275 | and pixel formats (TurboJPEG API), which allow applications to specify that, |
| 276 | when decompressing to a 4-component RGB buffer, the unused byte should be set |
| 277 | to 0xFF so that it can be interpreted as an opaque alpha channel. |
| 278 | |
DRC | a7466c9 | 2012-01-26 22:20:31 +0000 | [diff] [blame] | 279 | [5] Fixed regression issue whereby DevIL failed to build against libjpeg-turbo |
| 280 | because libjpeg-turbo's distributed version of jconfig.h contained an INLINE |
| 281 | macro, which conflicted with a similar macro in DevIL. This macro is used only |
| 282 | internally when building libjpeg-turbo, so it was moved into config.h. |
| 283 | |
DRC | 12781cb | 2012-01-27 01:23:20 +0000 | [diff] [blame] | 284 | [6] libjpeg-turbo will now correctly decompress erroneous CMYK/YCCK JPEGs whose |
| 285 | K component is assigned a component ID of 1 instead of 4. Although these files |
| 286 | are in violation of the spec, other JPEG implementations handle them |
| 287 | correctly. |
| 288 | |
DRC | c052646 | 2012-02-10 01:44:55 +0000 | [diff] [blame] | 289 | [7] Added ARM v6 and ARM v7 architectures to libjpeg.a and libturbojpeg.a in |
DRC | a2a2cd6 | 2013-02-04 22:29:57 +0000 | [diff] [blame] | 290 | the official libjpeg-turbo binary package for OS X, so that those libraries can |
| 291 | be used to build both OS X and iOS applications. |
DRC | c052646 | 2012-02-10 01:44:55 +0000 | [diff] [blame] | 292 | |
DRC | 1ca924a | 2011-11-29 08:58:27 +0000 | [diff] [blame] | 293 | |
DRC | f8e0055 | 2011-02-04 11:06:36 +0000 | [diff] [blame] | 294 | 1.1.90 (1.2 beta1) |
| 295 | ================== |
| 296 | |
DRC | 7bc3fb5 | 2011-10-28 06:45:53 +0000 | [diff] [blame] | 297 | [1] Added a Java wrapper for the TurboJPEG API. See java/README for more |
| 298 | details. |
DRC | f8e0055 | 2011-02-04 11:06:36 +0000 | [diff] [blame] | 299 | |
DRC | 7bc3fb5 | 2011-10-28 06:45:53 +0000 | [diff] [blame] | 300 | [2] The TurboJPEG API can now be used to scale down images during |
| 301 | decompression. |
DRC | a3c3059 | 2011-02-07 08:06:16 +0000 | [diff] [blame] | 302 | |
DRC | 15866ac | 2011-03-04 13:46:55 +0000 | [diff] [blame] | 303 | [3] Added SIMD routines for RGB-to-grayscale color conversion, which |
| 304 | significantly improves the performance of grayscale JPEG compression from an |
| 305 | RGB source image. |
| 306 | |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 307 | [4] Improved the performance of the C color conversion routines, which are used |
| 308 | on platforms for which SIMD acceleration is not available. |
DRC | 15866ac | 2011-03-04 13:46:55 +0000 | [diff] [blame] | 309 | |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 310 | [5] Added a function to the TurboJPEG API that performs lossless transforms. |
| 311 | This function is implemented using the same back end as jpegtran, but it |
| 312 | performs transcoding entirely in memory and allows multiple transforms and/or |
| 313 | crop operations to be batched together, so the source coefficients only need to |
| 314 | be read once. This is useful when generating image tiles from a single source |
| 315 | JPEG. |
DRC | 15866ac | 2011-03-04 13:46:55 +0000 | [diff] [blame] | 316 | |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 317 | [6] Added tests for the new TurboJPEG scaled decompression and lossless |
DRC | 77fee43 | 2011-11-01 17:14:22 +0000 | [diff] [blame] | 318 | transform features to tjbench (the TurboJPEG benchmark, formerly called |
| 319 | "jpgtest".) |
DRC | 15866ac | 2011-03-04 13:46:55 +0000 | [diff] [blame] | 320 | |
| 321 | [7] Added support for 4:4:0 (transposed 4:2:2) subsampling in TurboJPEG, which |
| 322 | was necessary in order for it to read 4:2:2 JPEG files that had been losslessly |
| 323 | transposed or rotated 90 degrees. |
| 324 | |
DRC | 67d1fc1 | 2011-05-24 14:13:01 +0000 | [diff] [blame] | 325 | [8] All legacy VirtualGL code has been re-factored, and this has allowed |
| 326 | libjpeg-turbo, in its entirety, to be re-licensed under a BSD-style license. |
DRC | ee26992 | 2011-04-26 23:46:38 +0000 | [diff] [blame] | 327 | |
DRC | f89dd1e | 2011-05-21 14:23:30 +0000 | [diff] [blame] | 328 | [9] libjpeg-turbo can now be built with YASM. |
DRC | 56fb237 | 2011-05-03 06:32:41 +0000 | [diff] [blame] | 329 | |
DRC | e5c6eb5 | 2011-08-17 20:59:56 +0000 | [diff] [blame] | 330 | [10] Added SIMD acceleration for ARM Linux and iOS platforms that support |
| 331 | NEON instructions. |
DRC | 321e068 | 2011-05-03 08:47:43 +0000 | [diff] [blame] | 332 | |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 333 | [11] Refactored the TurboJPEG C API and documented it using Doxygen. The |
| 334 | TurboJPEG 1.2 API uses pixel formats to define the size and component order of |
| 335 | the uncompressed source/destination images, and it includes a more efficient |
| 336 | version of TJBUFSIZE() that computes a worst-case JPEG size based on the level |
DRC | 5039d73 | 2013-01-21 23:42:12 +0000 | [diff] [blame] | 337 | of chrominance subsampling. The refactored implementation of the TurboJPEG API |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 338 | now uses the libjpeg memory source and destination managers, which allows the |
| 339 | TurboJPEG compressor to grow the JPEG buffer as necessary. |
DRC | 9b28def | 2011-05-21 14:37:15 +0000 | [diff] [blame] | 340 | |
DRC | e9f9ec4 | 2011-05-25 06:02:50 +0000 | [diff] [blame] | 341 | [12] Eliminated errors in the output of jpegtran on Windows that occurred when |
DRC | 7e3fd2f | 2011-05-25 06:04:43 +0000 | [diff] [blame] | 342 | the application was invoked using I/O redirection |
| 343 | (jpegtran <input.jpg >output.jpg). |
| 344 | |
DRC | b8c6ee3 | 2011-05-31 20:22:37 +0000 | [diff] [blame] | 345 | [13] The inclusion of libjpeg v7 and v8 emulation as well as arithmetic coding |
DRC | 0571e17 | 2011-05-31 20:17:16 +0000 | [diff] [blame] | 346 | support in libjpeg-turbo v1.1.0 introduced several new error constants in |
| 347 | jerror.h, and these were mistakenly enabled for all emulation modes, causing |
DRC | fa9ff8e | 2011-06-21 06:17:10 +0000 | [diff] [blame] | 348 | the error enum in libjpeg-turbo to sometimes have different values than the |
| 349 | same enum in libjpeg. This represents an ABI incompatibility, and it caused |
| 350 | problems with rare applications that took specific action based on a particular |
| 351 | error value. The fix was to include the new error constants conditionally |
| 352 | based on whether libjpeg v7 or v8 emulation was enabled. |
DRC | 0571e17 | 2011-05-31 20:17:16 +0000 | [diff] [blame] | 353 | |
DRC | eed0861 | 2011-06-21 04:56:02 +0000 | [diff] [blame] | 354 | [14] Fixed an issue whereby Windows applications that used libjpeg-turbo would |
DRC | b7120ca | 2011-06-21 04:57:32 +0000 | [diff] [blame] | 355 | fail to compile if the Windows system headers were included before jpeglib.h. |
| 356 | This issue was caused by a conflict in the definition of the INT32 type. |
DRC | 6ca6953 | 2011-02-18 03:31:11 +0000 | [diff] [blame] | 357 | |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 358 | [15] Fixed 32-bit supplementary package for amd64 Debian systems, which was |
DRC | 68a086a | 2011-07-19 09:26:23 +0000 | [diff] [blame] | 359 | broken by enhancements to the packaging system in 1.1. |
| 360 | |
DRC | 3c21b08 | 2011-10-28 06:25:13 +0000 | [diff] [blame] | 361 | [16] When decompressing a JPEG image using an output colorspace of |
DRC | c08e8c1 | 2011-09-08 23:54:40 +0000 | [diff] [blame] | 362 | JCS_EXT_RGBX, JCS_EXT_BGRX, JCS_EXT_XBGR, or JCS_EXT_XRGB, libjpeg-turbo will |
| 363 | now set the unused byte to 0xFF, which allows applications to interpret that |
| 364 | byte as an alpha channel (0xFF = opaque). |
| 365 | |
DRC | f8e0055 | 2011-02-04 11:06:36 +0000 | [diff] [blame] | 366 | |
DRC | 6ee5459 | 2011-03-01 08:18:30 +0000 | [diff] [blame] | 367 | 1.1.1 |
| 368 | ===== |
| 369 | |
| 370 | [1] Fixed a 1-pixel error in row 0, column 21 of the luminance plane generated |
| 371 | by tjEncodeYUV(). |
| 372 | |
DRC | 8071c39 | 2011-04-17 15:29:17 +0000 | [diff] [blame] | 373 | [2] libjpeg-turbo's accelerated Huffman decoder previously ignored unexpected |
| 374 | markers found in the middle of the JPEG data stream during decompression. It |
| 375 | will now hand off decoding of a particular block to the unaccelerated Huffman |
| 376 | decoder if an unexpected marker is found, so that the unaccelerated Huffman |
| 377 | decoder can generate an appropriate warning. |
DRC | 6ee5459 | 2011-03-01 08:18:30 +0000 | [diff] [blame] | 378 | |
DRC | 47aaf6f | 2011-03-22 05:40:39 +0000 | [diff] [blame] | 379 | [3] Older versions of MinGW64 prefixed symbol names with underscores by |
DRC | 1da7858 | 2011-03-22 09:34:01 +0000 | [diff] [blame] | 380 | default, which differed from the behavior of 64-bit Visual C++. MinGW64 1.0 |
| 381 | has adopted the behavior of 64-bit Visual C++ as the default, so to accommodate |
| 382 | this, the libjpeg-turbo SIMD function names are no longer prefixed with an |
| 383 | underscore when building with MinGW64. This means that, when building |
| 384 | libjpeg-turbo with older versions of MinGW64, you will now have to add |
| 385 | -fno-leading-underscore to the CFLAGS. |
| 386 | |
DRC | d884011 | 2011-04-25 22:46:25 +0000 | [diff] [blame] | 387 | [4] Fixed a regression bug in the NSIS script that caused the Windows installer |
| 388 | build to fail when using the Visual Studio IDE. |
| 389 | |
| 390 | [5] Fixed a bug in jpeg_read_coefficients() whereby it would not initialize |
| 391 | cinfo->image_width and cinfo->image_height if libjpeg v7 or v8 emulation was |
| 392 | enabled. This specifically caused the jpegoptim program to fail if it was |
| 393 | linked against a version of libjpeg-turbo that was built with libjpeg v7 or v8 |
| 394 | emulation. |
| 395 | |
DRC | 049aef5 | 2011-04-25 22:41:14 +0000 | [diff] [blame] | 396 | [6] Eliminated excessive I/O overhead that occurred when reading BMP files in |
| 397 | cjpeg. |
| 398 | |
DRC | 5ee81f4 | 2011-05-02 00:35:50 +0000 | [diff] [blame] | 399 | [7] Eliminated errors in the output of cjpeg on Windows that occurred when the |
DRC | 34a8e35 | 2011-05-10 22:14:38 +0000 | [diff] [blame] | 400 | application was invoked using I/O redirection (cjpeg <inputfile >output.jpg). |
DRC | 5ee81f4 | 2011-05-02 00:35:50 +0000 | [diff] [blame] | 401 | |
DRC | f5c3bb3 | 2011-03-18 05:59:07 +0000 | [diff] [blame] | 402 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 403 | 1.1.0 |
| 404 | ===== |
DRC | fa1d183 | 2011-01-26 05:35:20 +0000 | [diff] [blame] | 405 | |
DRC | a49c4e5 | 2011-02-18 20:50:08 +0000 | [diff] [blame] | 406 | [1] The algorithm used by the SIMD quantization function cannot produce correct |
| 407 | results when the JPEG quality is >= 98 and the fast integer forward DCT is |
| 408 | used. Thus, the non-SIMD quantization function is now used for those cases, |
| 409 | and libjpeg-turbo should now produce identical output to libjpeg v6b in all |
| 410 | cases. |
DRC | e1716b8 | 2011-02-18 03:19:43 +0000 | [diff] [blame] | 411 | |
DRC | a49c4e5 | 2011-02-18 20:50:08 +0000 | [diff] [blame] | 412 | [2] Despite the above, the fast integer forward DCT still degrades somewhat for |
DRC | 5039d73 | 2013-01-21 23:42:12 +0000 | [diff] [blame] | 413 | JPEG qualities greater than 95, so the TurboJPEG wrapper will now automatically |
| 414 | use the slow integer forward DCT when generating JPEG images of quality 96 or |
| 415 | greater. This reduces compression performance by as much as 15% for these |
| 416 | high-quality images but is necessary to ensure that the images are perceptually |
| 417 | lossless. It also ensures that the library can avoid the performance pitfall |
| 418 | created by [1]. |
DRC | a49c4e5 | 2011-02-18 20:50:08 +0000 | [diff] [blame] | 419 | |
| 420 | [3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler. |
| 421 | |
| 422 | [4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in |
DRC | d9ee65c | 2011-04-05 07:01:26 +0000 | [diff] [blame] | 423 | the RGB-to-luminance lookup tables. |
DRC | 8ed7b81 | 2011-02-15 08:31:34 +0000 | [diff] [blame] | 424 | |
DRC | 240d82f | 2011-02-19 00:00:34 +0000 | [diff] [blame] | 425 | [5] The Windows distribution packages now include the libjpeg run-time programs |
| 426 | (cjpeg, etc.) |
| 427 | |
DRC | 9cd2c42 | 2011-02-19 17:52:45 +0000 | [diff] [blame] | 428 | [6] All packages now include jpgtest. |
DRC | 240d82f | 2011-02-19 00:00:34 +0000 | [diff] [blame] | 429 | |
DRC | e4d9b5b | 2011-02-25 06:17:17 +0000 | [diff] [blame] | 430 | [7] The TurboJPEG dynamic library now uses versioned symbols. |
| 431 | |
| 432 | [8] Added two new TurboJPEG API functions, tjEncodeYUV() and |
| 433 | tjDecompressToYUV(), to replace the somewhat hackish TJ_YUV flag. |
| 434 | |
DRC | 2d94e26 | 2011-01-25 06:52:31 +0000 | [diff] [blame] | 435 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 436 | 1.0.90 (1.1 beta1) |
| 437 | ================== |
DRC | 766dc5c | 2010-10-12 02:50:18 +0000 | [diff] [blame] | 438 | |
DRC | f38eee0 | 2011-02-18 07:00:38 +0000 | [diff] [blame] | 439 | [1] Added emulation of the libjpeg v7 and v8 APIs and ABIs. See |
DRC | efa618e | 2010-10-18 08:41:11 +0000 | [diff] [blame] | 440 | README-turbo.txt for more details. This feature was sponsored by CamTrace SAS. |
| 441 | |
| 442 | [2] Created a new CMake-based build system for the Visual C++ and MinGW builds. |
DRC | 766dc5c | 2010-10-12 02:50:18 +0000 | [diff] [blame] | 443 | |
DRC | 2c62da3 | 2012-01-17 22:55:03 +0000 | [diff] [blame] | 444 | [3] Grayscale bitmaps can now be compressed from/decompressed to using the |
| 445 | TurboJPEG API. |
DRC | 09854f5 | 2010-11-04 22:39:59 +0000 | [diff] [blame] | 446 | |
DRC | 01e6909 | 2011-01-06 01:19:43 +0000 | [diff] [blame] | 447 | [4] jpgtest can now be used to test decompression performance with existing |
| 448 | JPEG images. |
DRC | e89bbae | 2010-11-12 10:18:08 +0000 | [diff] [blame] | 449 | |
DRC | d1c281a | 2010-11-17 22:44:40 +0000 | [diff] [blame] | 450 | [5] If the default install prefix (/opt/libjpeg-turbo) is used, then |
| 451 | 'make install' now creates /opt/libjpeg-turbo/lib32 and |
| 452 | /opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary |
| 453 | packages. |
| 454 | |
DRC | ec31193 | 2010-11-22 19:51:42 +0000 | [diff] [blame] | 455 | [6] All symbols in the libjpeg-turbo dynamic library are now versioned, even |
| 456 | when the library is built with libjpeg v6b emulation. |
| 457 | |
DRC | 01e6909 | 2011-01-06 01:19:43 +0000 | [diff] [blame] | 458 | [7] Added arithmetic encoding and decoding support (can be disabled with |
DRC | 245cfdf | 2010-11-23 17:11:06 +0000 | [diff] [blame] | 459 | configure or CMake options) |
DRC | 66f97e6 | 2010-11-23 05:49:54 +0000 | [diff] [blame] | 460 | |
DRC | 2c62da3 | 2012-01-17 22:55:03 +0000 | [diff] [blame] | 461 | [8] Added a TJ_YUV flag to the TurboJPEG API, which causes both the compressor |
| 462 | and decompressor to output planar YUV images. |
DRC | fbb6747 | 2010-11-24 04:02:37 +0000 | [diff] [blame] | 463 | |
DRC | 2c62da3 | 2012-01-17 22:55:03 +0000 | [diff] [blame] | 464 | [9] Added an extended version of tjDecompressHeader() to the TurboJPEG API, |
| 465 | which allows the caller to determine the type of subsampling used in a JPEG |
| 466 | image. |
DRC | 50c657b | 2010-12-14 01:23:16 +0000 | [diff] [blame] | 467 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 468 | [10] Added further protections against invalid Huffman codes. |
DRC | fa1d183 | 2011-01-26 05:35:20 +0000 | [diff] [blame] | 469 | |
DRC | 766dc5c | 2010-10-12 02:50:18 +0000 | [diff] [blame] | 470 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 471 | 1.0.1 |
| 472 | ===== |
DRC | 0fbb28e | 2010-07-30 17:15:52 +0000 | [diff] [blame] | 473 | |
| 474 | [1] The Huffman decoder will now handle erroneous Huffman codes (for instance, |
| 475 | from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to |
| 476 | crash under certain circumstances. |
| 477 | |
DRC | 81a50f7 | 2012-01-17 22:56:22 +0000 | [diff] [blame] | 478 | [2] Fixed typo in SIMD dispatch routines that was causing 4:2:2 upsampling to |
DRC | 025a279 | 2010-08-07 16:27:56 +0000 | [diff] [blame] | 479 | be used instead of 4:2:0 when decompressing JPEG images using SSE2 code. |
DRC | 3095971 | 2010-08-07 16:06:56 +0000 | [diff] [blame] | 480 | |
DRC | bdb1288 | 2010-08-21 21:14:17 +0000 | [diff] [blame] | 481 | [3] configure script will now automatically determine whether the |
| 482 | INCOMPLETE_TYPES_BROKEN macro should be defined. |
| 483 | |
DRC | 0fbb28e | 2010-07-30 17:15:52 +0000 | [diff] [blame] | 484 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 485 | 1.0.0 |
| 486 | ===== |
DRC | 4959787 | 2010-05-17 20:47:57 +0000 | [diff] [blame] | 487 | |
DRC | c773d10 | 2010-06-05 06:58:22 +0000 | [diff] [blame] | 488 | [1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify |
| 489 | --host when configuring on a 64-bit system) |
DRC | 4959787 | 2010-05-17 20:47:57 +0000 | [diff] [blame] | 490 | |
DRC | d5e964c | 2013-01-10 11:47:39 +0000 | [diff] [blame] | 491 | [2] Created symlinks in the Unix/Linux packages so that the TurboJPEG |
DRC | f12c7db | 2010-05-18 19:04:47 +0000 | [diff] [blame] | 492 | include file can always be found in /opt/libjpeg-turbo/include, the 32-bit |
| 493 | static libraries can always be found in /opt/libjpeg-turbo/lib32, and the |
| 494 | 64-bit static libraries can always be found in /opt/libjpeg-turbo/lib64. |
| 495 | |
DRC | 4bf3b58 | 2010-06-05 01:03:23 +0000 | [diff] [blame] | 496 | [3] The Unix/Linux distribution packages now include the libjpeg run-time |
| 497 | programs (cjpeg, etc.) and man pages. |
| 498 | |
DRC | 81a50f7 | 2012-01-17 22:56:22 +0000 | [diff] [blame] | 499 | [4] Created a 32-bit supplementary package for amd64 Debian systems, which |
DRC | 4bf3b58 | 2010-06-05 01:03:23 +0000 | [diff] [blame] | 500 | contains just the 32-bit libjpeg-turbo libraries. |
| 501 | |
| 502 | [5] Moved the libraries from */lib32 to */lib in the i386 Debian package. |
| 503 | |
DRC | df3337c | 2010-07-02 09:13:58 +0000 | [diff] [blame] | 504 | [6] Include distribution package for Cygwin |
DRC | 4bf3b58 | 2010-06-05 01:03:23 +0000 | [diff] [blame] | 505 | |
DRC | df3337c | 2010-07-02 09:13:58 +0000 | [diff] [blame] | 506 | [7] No longer necessary to specify --without-simd on non-x86 architectures, and |
DRC | 38ccf85 | 2010-06-10 19:49:49 +0000 | [diff] [blame] | 507 | unit tests now work on those architectures. |
| 508 | |
DRC | 4959787 | 2010-05-17 20:47:57 +0000 | [diff] [blame] | 509 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 510 | 0.0.93 |
| 511 | ====== |
DRC | 0f413b2 | 2010-04-06 20:05:39 +0000 | [diff] [blame] | 512 | |
DRC | c773d10 | 2010-06-05 06:58:22 +0000 | [diff] [blame] | 513 | [1] 2982659, Fixed x86-64 build on FreeBSD systems |
DRC | 0f413b2 | 2010-04-06 20:05:39 +0000 | [diff] [blame] | 514 | |
DRC | c773d10 | 2010-06-05 06:58:22 +0000 | [diff] [blame] | 515 | [2] 2988188: Added support for Windows 64-bit systems |
DRC | 1a2219e | 2010-05-10 20:03:36 +0000 | [diff] [blame] | 516 | |
DRC | 0f413b2 | 2010-04-06 20:05:39 +0000 | [diff] [blame] | 517 | |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 518 | 0.0.91 |
| 519 | ====== |
DRC | ae19bf6 | 2010-03-15 11:40:31 +0000 | [diff] [blame] | 520 | |
| 521 | [1] Added documentation to .deb packages |
| 522 | |
| 523 | [2] 2968313: Fixed data corruption issues when decompressing large JPEG images |
| 524 | and/or using buffered I/O with the libjpeg-turbo decompressor |
DRC | 958b2c0 | 2011-01-28 08:00:40 +0000 | [diff] [blame] | 525 | |
| 526 | |
| 527 | 0.0.90 |
| 528 | ====== |
| 529 | |
| 530 | Initial release |