kmx git

Commit	Date	Message
6ec8e41f	2024-06-13T11:52:13	Handle lossless JPEG images w/2-15 bits per sample Closes #768 Closes #769
94c64ead	2024-06-17T20:27:57	Various doc tweaks - "bits per component" = "bits per sample" Describing the data precision of a JPEG image using "bits per component" is technically correct, but "bits per sample" is the terminology that the JPEG-1 spec uses. Also, "bits per component" is more commonly used to describe the precision of packed-pixel formats (as opposed to "bits per pixel") rather than planar formats, in which all components are grouped together. - Unmention legacy display technologies. Colormapped and monochrome displays aren't a thing anymore, and even when they were still a thing, it was possible to display full-color images to them. In 1991, when JPEG decompression time was measured in minutes per megapixel, it made sense to keep a decompressed copy of JPEG images on disk, in a format that could be displayed without further color conversion (since color conversion was slow and memory-intensive.) In 2024, JPEG decompression time is measured in milliseconds per megapixel, and color conversion is even faster. Thus, JPEG images can be decompressed, displayed, and color-converted (if necessary) "on the fly" at speeds too fast for human vision to perceive. (In fact, your TV performs much more complicated decompression algorithms at least 60 times per second.) - Document that color quantization (and associated features), GIF input/output, Targa input/output, and OS/2 BMP input/output are legacy features. Legacy status doesn't necessarily mean that the features are deprecated. Rather, it is meant to discourage users from using features that may be of little or no benefit on modern machines (such as low-quality modes that had significant performance advantages in the early 1990s but no longer do) and that are maintained on a break/fix basis only. - General wordsmithing, grammar/punctuation policing, and formatting tweaks - Clarify which data precisions each cjpeg input format and each djpeg output format supports. - cjpeg.1: Remove unnecessary and impolitic statement about the -targa switch. - Adjust or remove performance claims to reflect the fact that: * On modern machines, the djpeg "-fast" switch has a negligible effect on performance. * There is a measurable difference between the performance of Floyd- Steinberg dithering and no dithering, but it is not likely perceptible to most users. * There is a measurable difference between the performance of 1-pass and 2-pass color quantization, but it is not likely perceptible to most users. * There is a measurable difference between the performance of full-color and grayscale output when decompressing a full-color JPEG image, but it is not likely perceptible to most users. * IDCT scaling does not necessarily improve performance. (It generally does if the scaling factor is <= 1/2 and generally doesn't if the scaling factor is > 1/2, at least on my machine. The performance claim made in jpeg-6b was probably invalidated when we merged the additional scaling factors from jpeg-7.) - Clarify which djpeg switches/output formats cannot be used when decompressing lossless JPEG images. - Remove djpeg hints, since those involve quality vs. speed tradeoffs that are no longer relevant for modern machines. - Remove documentation regarding using color quantization with 16-bit data precision. (Color quantization requires lossy mode.) - Java: Fix typos in TJDecompressor.decompress12() and TJDecompressor.decompress16() documentation. - jpegtran.1: Fix truncated paragraph In a man page, a single quote at the start of a line is interpreted as a macro. Closes #775 - libjpeg.txt: * Mention J16SAMPLE data type (oversight.) * Remove statement about extending jdcolor.c. (libjpeg-turbo is not quite as DIY as libjpeg once was.) * Remove paragraph about tweaking the various typedefs in jmorecfg.h. It is no longer relevant for modern machines. * Remove caveat regarding systems with ints less than 16 bits wide. (ANSI/ISO C requires an int to be at least 16 bits wide, and libjpeg-turbo has never supported non-ANSI compilers.) - usage.txt: * Add copyright header. * Document cjpeg -icc, -memdst, -report, -strict, and -version switches. * Document djpeg -icc, -maxscans, -memsrc, -report, -skip, -crop, -strict, and -version switches. * Document jpegtran -icc, -maxscans, -report, -strict, and -version switches.
be96fa0a	2023-12-14T13:18:20	Doc: Lossless JPEG clarifications - Clarify that lossless JPEG is slower than and doesn't compress as well as lossy JPEG. (That should be obvious, because "lossy" literally means that data is thrown away.) - Re-generate TurboJPEG C API documentation using Doxygen 1.9.8. - Clarify that setting the data_precision field in jpeg_compress_struct to 16 requires lossless mode. - Explain what the predictor selection value actually does. (Refer to Recommendation ITU-T T.81 (1992) \| ISO/IEC 10918-1:1994, Section H.1.2.1.)
55d342c7	2023-11-16T15:36:47	TurboJPEG: Expose/extend hidden "max pixels" param TJPARAM_MAXPIXELS was previously hidden and used only for fuzz testing, but it is potentially useful for calling applications as well, particularly if they want to guard against excessive memory consumption by the tj3LoadImage*() functions. The parameter has also been extended to decompression and lossless transformation functions/methods, mainly as a convenience. (It was already possible for calling applications to impose their own JPEG image size limits by reading the JPEG header prior to decompressing or transforming the image.)
6136a9e2	2023-11-16T14:12:28	Java doc: Terminology tweaks - "function" = "method" - "decompression and transform functions" = "decompression and transform operations" (for consistency with the 2.1.x documentation) - "return an error" = "throw an error" - "ceil()" = "Math.ceil()"
df9dbff8	2023-11-11T12:25:03	TurboJPEG: New param to limit virt array mem usage This corresponds to max_memory_to_use in the jpeg_memory_mgr struct in the libjpeg API, except that the TurboJPEG parameter is specified in megabytes. Because this is 2023 and computers with less than 1 MB of memory are not a thing (at least not within the scope of libjpeg-turbo support), it isn't useful to allow a limit less than 1 MB to be specified. Furthermore, because TurboJPEG parameters are signed integers, if we allowed the memory limit to be specified in bytes, then it would be impossible to specify a limit larger than 2 GB on 64-bit machines. Because max_memory_to_use is a long signed integer, effectively we can specify a limit of up to 2 petabytes on 64-bit machines if the TurboJPEG parameter is specified in megabytes. (2 PB should be enough for anybody, right?) This commit also bumps the TurboJPEG API version to 3.0.1. Since the TurboJPEG API version no longer tracks the libjpeg-turbo version, it makes sense to increment the API revision number when adding constants, to increment the minor version number when adding functions, and to increment the major version number for a complete overhaul. This commit also removes the vestigial TJ_NUMPARAM macro, which was never defined because it proved unnecessary. Partially implements #735
fc881ebb	2023-03-09T20:55:43	TurboJPEG: Implement 4:4:1 chrominance subsampling This allows losslessly transposed or rotated 4:1:1 JPEG images to be losslessly cropped, partially decompressed, or decompressed to planar YUV images. Because tj3Transform() allows multiple lossless transformations to be chained together, all subsampling options need to have a corresponding transposed subsampling option. (This is why 4:4:0 was originally implemented as well.) Otherwise, the documentation would be technically incorrect. It says that images with unknown subsampling types cannot be losslessly cropped, partially decompressed, or decompressed to planar YUV images, but it doesn't say anything about images with known subsampling types whose subsampling type becomes unknown if the image is rotated or transposed. This is one of those situations in which it is easier to implement a feature that works around the problem than to document the problem. Closes #659
96bc40c1	2023-01-26T13:11:58	Implement arithmetic coding with 12-bit precision This actually works and apparently always has worked. It only failed because the libjpeg code, which did not originally support arithmetic coding, assumed that optimize_coding should always be TRUE for 12-bit data precision.
fc01f467	2023-01-05T06:36:46	TurboJPEG 3 API overhaul (ChangeLog update forthcoming) - Prefix all function names with "tj3" and remove version suffixes from function names. (Future API overhauls will increment the prefix to "tj4", etc., thus retaining backward API/ABI compatibility without versioning each individual function.) - Replace stateless boolean flags (including TJFLAG_ARITHMETIC and TJFLAG_LOSSLESS, which were never released) with stateful integer parameters, the value of which persists between function calls. * Use parameters for the JPEG quality and subsampling as well, in order to eliminate the awkwardness of specifying function arguments that weren't relevant for lossless compression. * tj3DecompressHeader() now stores all relevant information about the JPEG image, including the width, height, subsampling type, entropy coding type, etc. in parameters rather than returning that information in its arguments. * TJFLAG_LIMITSCANS has been reimplemented as an integer parameter (TJPARAM_SCANLIMIT) that allows the number of scans to be specified. - Use the const keyword for all pointer arguments to unmodified buffers, as well as for both dimensions of 2D pointers. Addresses #395. - Use size_t rather than unsigned long to represent buffer sizes, since unsigned long is a 32-bit type on Windows. Addresses #24. - Return 0 from all buffer size functions if an error occurs, rather than awkwardly trying to return -1 in an unsigned data type. - Implement 12-bit and 16-bit data precision using dedicated compression, decompression, and image I/O functions/methods. * Suffix the names of all data-precision-specific functions with 8, 12, or 16. * Because the YUV functions are intended to be used for video, they are currently only implemented with 8-bit data precision, but they can be expanded to 12-bit data precision in the future, if necessary. * Extend TJUnitTest and TJBench to test 12-bit and 16-bit data precision, using a new -precision option. * Add appropriate regression tests for all of the above to the 'test' target. * Extend tjbenchtest to test 12-bit and 16-bit data precision, and add separate 'tjtest12' and 'tjtest16' targets. * BufferedImage I/O in the Java API is currently limited to 8-bit data precision, since the BufferedImage class does not straightforwardly support higher data precisions. * Extend the PPM reader to convert 12-bit and 16-bit PBMPLUS files to grayscale or CMYK pixels, as it already does for 8-bit files. - Properly accommodate lossless JPEG using dedicated parameters (TJPARAM_LOSSLESS, TJPARAM_LOSSLESSPSV, and TJPARAM_LOSSLESSPT), rather than using a flag and awkwardly repurposing the JPEG quality. Update TJBench to properly reflect whether a JPEG image is lossless. - Re-organize the TJBench usage screen. - Update the Java docs using Java 11, to improve the formatting and eliminate HTML frames. - Use the accurate integer DCT algorithm by default for both compression and decompression, since the "fast" algorithm is a legacy feature, it does not pass the ISO compliance tests, and it is not actually faster on modern x86 CPUs. Remove the -accuratedct option from TJBench and TJExample. - Re-implement the 'tjtest' target using a CMake script that enables the appropriate tests, depending on the data precision and whether or not the Java API is part of the build. - Consolidate the C and Java versions of tjbenchtest into one script. - Consolidate the C and Java versions of tjexampletest into one script. - Combine all initialization functions into a single function (tj3Init()) that accepts an integer parameter specifying the subsystems to initialize. - Enable decompression scaling explicitly, using a new function/method (tj3SetScalingFactor()/TJDecompressor.setScalingFactor()), rather than implicitly using awkward "desired width"/"desired height" parameters. - Introduce a new macro/constant (TJUNSCALED/TJ.UNSCALED) that maps to a scaling factor of 1/1. - Implement partial image decompression, using a new function/method (tj3SetCroppingRegion()/TJDecompressor.setCroppingRegion()) and TJBench option (-crop). Extend tjbenchtest to test the new feature. Addresses #1. - Allow the JPEG colorspace to be specified explicitly when compressing, using a new parameter (TJPARAM_COLORSPACE). This allows JPEG images with the RGB and CMYK colorspaces to be created. - Remove the error/difference image feature from TJBench. Identical images to the ones that TJBench created can be generated using ImageMagick with 'magick composite <original_image> <output_image> -compose difference <diff_image>' - Handle JPEG images with unknown subsampling types. TJPARAM_SUBSAMP is set to TJSAMP_UNKNOWN (== -1) for such images, but they can still be decompressed fully into packed-pixel images or losslessly transformed (with the exception of lossless cropping.) They cannot be partially decompressed or decompressed into planar YUV images. Note also that TJBench, due to its lack of support for imperfect transforms, requires that the subsampling type be known when rotating, flipping, or transversely transposing an image. Addresses #436 - The Java version of TJBench now has identical functionality to the C version. This was accomplished by (somewhat hackishly) calling the TurboJPEG C image I/O functions through JNI and copying the pixels between the C heap and the Java heap. - Add parameters (TJPARAM_RESTARTROWS and TJPARAM_RESTARTBLOCKS) and a TJBench option (-restart) to allow the restart marker interval to be specified when compressing. Eliminate the undocumented TJ_RESTART environment variable. - Add a parameter (TJPARAM_OPTIMIZE), a transform option (TJOPT_OPTIMIZE), and a TJBench option (-optimize) to allow optimized baseline Huffman coding to be specified when compressing. Eliminate the undocumented TJ_OPTIMIZE environment variable. - Add parameters (TJPARAM_XDENSITY, TJPARAM_DENSITY, and TJDENSITYUNITS) to allow the pixel density to be specified when compressing or saving a Windows BMP image and to be queried when decompressing or loading a Windows BMP image. Addresses #77. - Refactor the fuzz targets to use the new API. * Extend decompression coverage to 12-bit and 16-bit data precision. * Replace the awkward cjpeg12 and cjpeg16 targets with proper TurboJPEG-based compress12, compress12-lossless, and compress16-lossless targets - Fix innocuous UBSan warnings uncovered by the new fuzzers. - Implement previous versions of the TurboJPEG API by wrapping the new functions (tested by running the 2.1.x versions of TJBench, via tjbenchtest, and TJUnitTest against the new implementation.) * Remove all JNI functions for deprecated Java methods and implement the deprecated methods using pure Java wrappers. It should be understood that backward API compatibility in Java applies only to the Java classes and that one cannot mix and match a JAR file from one version of libjpeg-turbo with a JNI library from another version. - tj3Destroy() now silently accepts a NULL handle. - tj3Alloc() and tj3Free() now return/accept void pointers, as malloc() and free() do. - The image I/O functions now accept a TurboJPEG instance handle, which is used to transmit/receive parameters and to receive error information. Closes #517
52659f4f	2023-01-23T09:55:13	Merge branch 'main' into dev
edbb7e6d	2023-01-23T09:32:57	Java doc: TJ.pixelSize --> TJ.getPixelSize() TJ.pixelSize isn't actually a thing. Oops.
7ab6222c	2023-01-20T14:09:25	Merge branch 'main' into dev
fb15efe9	2023-01-18T06:44:46	TurboJPEG: More documentation improvements - TJBench/TJUnitTest: Wordsmith command-line output - Java: "decompress operations"="decompression operations" - tjLoadImage(): Error message tweak - Don't mention compression performance in the description of TJXOPT_PROGRESSIVE/TJTransform.OPT_PROGRESSIVE, because the image has already been compressed at that point. (Oversights from 9a146f0f23b01869e1bf7c478e12b43f83d59c32)
6a060d8c	2023-01-17T18:32:15	TJCompressor.java: (C) header formatting tweak (apparently borked by one of the previous merge commits)
c7c02d92	2023-01-17T18:31:31	Merge branch 'main' into dev
7ed186ed	2023-01-17T18:18:27	TJDecompressor.java: Exception message tweak NO_ASSOC_ERROR is specific to JPEG source images, but the decompress() methods can handle YUV source images as well.
155a8b03	2023-01-16T17:02:01	Merge branch 'main' into dev
0c0df2d0	2023-01-16T16:52:46	TJDecompressor.java: "YUV" = "planar YUV" (Oversight from 9a146f0f23b01869e1bf7c478e12b43f83d59c32)
d4589f4f	2023-01-14T18:07:53	Merge branch 'main' into dev
9a146f0f	2023-01-06T10:29:10	TurboJPEG: Numerous documentation improvements - Wordsmithing, formatting, and grammar tweaks - Various clarifications and corrections, including specifying whether a particular buffer or image is used as a source or destination - Accommodate/mention features that were introduced since the API documentation was created. - For clarity, use "packed-pixel" to describe uncompressed source/destination images that are not planar YUV. - Use "row" rather than "line" to refer to a single horizontal group of pixels or component values, for consistency with the libjpeg API documentation. (libjpeg also uses "scanline", which is a more archaic term.) - Use "alignment" rather than "padding" to refer to the number of bytes by which a row's width is evenly divisible. This consistifies the documention of the YUV functions and tjLoadImage(). ("Padding" typically refers to the number of bytes added to each row, which is not the same thing.) - Remove all references to "the underlying codec." Although the TurboJPEG API originated as a cross-platform wrapper for the Intel Integrated Performance Primitives, Sun mediaLib, QuickTime, and libjpeg, none of those TurboJPEG implementations has been maintained since 2009. Nothing would prevent someone from implementing the TurboJPEG API without libjpeg-turbo, but such an implementation would not necessarily have an "underlying codec." (It could be fully self-contained.) - Use "destination image" rather than "output image", for consistency, or describe the type of image that will be output. - Avoid the term "image buffer" and instead use "byte buffer" to refer to buffers that will hold JPEG images, or describe the type of image that will be contained in the buffer. (The Java documentation doesn't use "byte buffer", because the buffer arrays literally have "byte" in front of them, and since Java doesn't have pointers, it is not possible for mere mortals to store any other type of data in those arrays.) - C: Use "unified" to describe YUV images stored in a single buffer, for consistency with the Java documentation. - Use "planar YUV" rather than "YUV planar". Is is our convention to describe images using {component layout} {colorspace/pixel format} {image function}, e.g. "packed-pixel RGB source image" or "planar YUV destination image." - C: Document the TurboJPEG API version in which a particular function or macro was introduced, and reorder the backward compatibility function stubs in turbojpeg.h alphabetically by API version. - C: Use Markdown rather than HTML tags, where possible, in the Doxygen comments.
98ff1fd1	2022-11-21T20:57:39	TurboJPEG: Add lossless JPEG detection capability Add a new TurboJPEG C API function (tjDecompressHeader4()) and Java API method (TJDecompressor.getFlags()) that return the bitwise OR of any flags that are relevant to the JPEG image being decompressed (currently TJFLAG_PROGRESSIVE, TJFLAG_ARITHMETIC, TJFLAG_LOSSLESS, and their Java equivalents.) This allows a calling program to determine whether the image being decompressed is a lossless JPEG image, which means that the decompression scaling feature will not be available and that a full-sized destination buffer should be allocated. More specifically, this fixes a buffer overrun in TJBench, TJExample, and the decompress* fuzz targets that occurred when attempting (in vain) to decompress a lossless JPEG image with decompression scaling enabled.
25ccad99	2022-11-16T15:57:25	TurboJPEG: 8-bit lossless JPEG support
6002720c	2022-11-15T23:10:35	TurboJPEG: Opt. enable arithmetic entropy coding
931884e7	2022-08-08T15:41:01	Java: Remove deprecated fields, ctors, and methods Most of these have been deprecated since libjpeg-turbo 1.4.x. It's time.
ba22c0f7	2022-06-24T14:03:03	tjDecompressHeader3(): Accept tables-only streams Inspired by: https://github.com/amyspark/libjpeg-turbo/commit/b3b15cfe74cf07914122e26cf1e408a9a9cf3135 Closes #604 Closes #605
c81e91e8	2021-04-05T16:08:22	TurboJPEG: New flag for limiting prog JPEG scans This also fixes timeouts reported by OSS-Fuzz.
1d7faf84	2020-10-01T18:17:46	Merge branch 'master' into dev
8e895c79	2020-10-01T18:13:35	Java dox: Fix errors w/ javadoc in Java 8 or later
fb6f5e8b	2020-06-25T21:31:11	Java/Mac:Remove obsolete libturbojpeg.jnilib alias IIRC, this was only necessary with the version of Java 1.5 that shipped with OS X 10.4 "Tiger". Apple's implementation of Java 6 ("Java for OS X Systems") supported both .jnilib and .dylib extensions for JNI libraries, but Oracle's implementation of Java has only ever supported the .dylib extension.
8cc1277b	2020-02-24T13:29:50	TJCompressor.compress(int): Fix YUV-to-JPEG error Due to an oversight, the TJCompressor.compress(int) method did not handle YUV source images. Fixes #413
eb8bba62	2018-05-16T10:49:09	Java: Further style refinements (detected by enabling additional checkstyle modules) This commit also removes unnecessary uses of the "private" modifier in the Java tests/examples. The default access modifier disallows access outside of the package, and none of these classes is in a package. The only reason we use "private" with member variables in these classes is to make checkstyle happy, because we want it to enforce that behavior in the TurboJPEG API code.
53bb9418	2018-05-15T14:51:49	Java: Reformat code per checkstyle recommendations ... and modify tjbench.c to match the variable name changes made to TJBench.java ("checkstyle" = http://checkstyle.sourceforge.net, not our regex-based checkstyle script)
b2d000e6	2018-04-11T10:47:16	"Further" = "Furthermore" Grammar Police. Has Ray Stevens taught me nothing?
19c791cd	2018-03-08T10:55:20	Improve code formatting consistency With rare exceptions ... - Always separate line continuation characters by one space from preceding code. - Always use two-space indentation. Never use tabs. - Always use K&R-style conditional blocks. - Always surround operators with spaces, except in raw assembly code. - Always put a space after, but not before, a comma. - Never put a space between type casts and variables/function calls. - Never put a space between the function name and the argument list in function declarations and prototypes. - Always surround braces ('{' and '}') with spaces. - Always surround statements (if, for, else, catch, while, do, switch) with spaces. - Always attach pointer symbols ('' and '') to the variable or function name. - Always precede pointer symbols ('' and '**') by a space in type casts. - Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG API libraries (using min() from tjutil.h is still necessary for TJBench.) - Where it makes sense (particularly in the TurboJPEG code), put a blank line after variable declaration blocks. - Always separate statements in one-liners by two spaces. The purpose of this was to ease maintenance on my part and also to make it easier for contributors to figure out how to format patch submissions. This was admittedly confusing (even to me sometimes) when we had 3 or 4 different style conventions in the same source tree. The new convention is more consistent with the formatting of other OSS code bases. This commit corrects deviations from the chosen formatting style in the libjpeg API code and reformats the TurboJPEG API code such that it conforms to the same standard. NOTES: - Although it is no longer necessary for the function name in function declarations to begin in Column 1 (this was historically necessary because of the ansi2knr utility, which allowed libjpeg to be built with non-ANSI compilers), we retain that formatting for the libjpeg code because it improves readability when using libjpeg's function attribute macros (GLOBAL(), etc.) - This reformatting project was accomplished with the help of AStyle and Uncrustify, although neither was completely up to the task, and thus a great deal of manual tweaking was required. Note to developers of code formatting utilities: the libjpeg-turbo code base is an excellent test bed, because AFAICT, it breaks every single one of the utilities that are currently available. - The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been formatted to match the SSE2 code (refer to ff5685d5344273df321eb63a005eaae19d2496e3.) I hadn't intended to bother with this, but the Loongson MMI implementation demonstrated that there is still academic value to the MMX implementation, as an algorithmic model for other 64-bit vector implementations. Thus, it is desirable to improve its readability in the same manner as that of the SSE2 implementation.
dc4b9002	2017-11-16T20:43:12	TurboJPEG: Add alpha offset array/method Also, set the red/green/blue offsets for TJPF_GRAY to -1 rather than 0. It was undefined behavior for an application to use those arrays/methods with TJPF_GRAY anyhow, and this makes it easier for applications to programmatically detect whether a given pixel format has red, green, and blue components.
c0f3512d	2017-08-31T20:57:19	Merge branch 'master' into dev
32120054	2017-08-14T10:54:27	Java: Fix NullPointerException in YUVImage planes == null is a valid argument to setBuf() if alloc == true, so we need to make sure that planes is non-null before validating its length. We also need to allocate one dimension of the planes array if it's null. Fixes #168
c9453121	2017-06-29T16:49:09	TJBench: Recover from non-fatal errors if possible Previously, -stoponwarning only had an effect on the underlying TurboJPEG C functions, but TJBench still aborted if a non-fatal error occurred. This commit modifies the C version of TJBench such that it always recovers from a non-fatal error unless -stoponwarning is specified. Furthermore, the benchmark stores the details of the last non-fatal error and does not print any subsequent non-fatal error messages unless they differ from the last one. Due to limitations in the Java API (specifically, the fact that it cannot communicate errors, fatal or otherwise, to the calling program without throwing a TJException), it was only possible to make decompression operations fully recoverable within TJBench. With other operations, -stoponwarning still has an effect on the underlying C library but has no effect at the Java level. The Java API documentation has been amended to reflect that only certain methods are truly recoverable, regardless of the state of TJ.FLAG_STOPONWARNING.
dadebcd7	2017-06-28T11:43:08	TurboJPEG: Add "copy none", progressive xform opts Allow progressive entropy coding to be enabled on a transform-by-transform basis, and implement a new transform option for disabling the copying of markers. Closes #153
aba6ae59	2017-06-27T13:24:08	TurboJPEG: Opt. enable progressive entropy coding Fulfills part of the feature request in #153. Also paves the way for SIMD-accelerated progressive Huffman coding (refer to #46.)
d4092f6b	2017-06-27T10:54:21	TurboJPEG: Improve error handling - Provide a new C API function and TJException method that allows calling programs to query the severity of a compression/decompression/ transform error. - Provide a new flag that instructs the library to immediately stop compressing/decompressing/transforming if a warning is encountered. Fixes #151
d681fa76	2016-12-07T10:54:54	Build: Set install dirs in a more GNU-friendly way This builds upon the existing GNUInstallDirs module in CMake but adds the following features to that module: - The ability to override the defaults for each install directory through a new set of variables (`CMAKE_INSTALL_DEFAULT_DIR`). Before operating system vendors began shipping libjpeg-turbo, it was meant to be a run-time drop-in replacement for the system's distribution of libjpeg, so it has traditionally installed itself under /opt/libjpeg-turbo on Unx systems by default. On Windows, it has traditionally installed itself under %SystemDrive%\libjpeg-turbo, which is not uncommon behavior for open source libraries (open source SDKs tend to install outside of the Program Files directory so as to avoid spaces in the directory name.) At least in the case of Unx, the install directory behavior is based somewhat on the Solaris standard, which requires all non-O/S packages to install their files under /opt/{package_name}. I adopted that standard for VirtualGL and TurboVNC while working at Sun, because it allowed those packages to be located under the same directory on all platforms. I adopted it for libjpeg-turbo because it ensured that our files would never conflict with the system's version of libjpeg. Even though many Unx distributions ship libjpeg-turbo these days, not all of them ship the TurboJPEG API library or the Java classes or even the latest version of the libjpeg API library, so there are still many cases in which it is desirable to install a separate version of libjpeg-turbo than the one installed by the system. Furthermore, installing the files under /opt mimics the directory structure of our official binary packages, and it makes it very easy to uninstall libjpeg-turbo. For these reasons, our build system needs to be able to use non-GNU-compliant defaults for each install directory if `CMAKE_INSTALL_PREFIX` is set to the default value. - For each directory variable, the module now detects changes to `CMAKE_INSTALL_PREFIX` and changes the directory variable accordingly, if the variable has not been changed by the user. This makes it easy to switch between our "official" directory structure and the GNU-compliant directory structure "on the fly" simply by changing `CMAKE_INSTALL_PREFIX`. Also, this new mechanism eliminated the need for the crufty mechanism that previously did the same thing just for the library directory variable. How it should work: - If a dir variable is unset, then the module will set an internal property indicating that the dir variable was initialized to its default value. - If the dir variable ever diverges from its default value, then the internal property is cleared, and it cannot be set again without unsetting the dir variable. - If the install prefix changes, and if the internal property indicates that the dir variable is still set to its default value, and if the dir variable's value is not being manually changed at the same time that the install prefix is being changed, then the dir variable's value is automatically changed to the new default value for that variable (as determined by the new install prefix.) - The directory variables are now always cached, regardless of whether they were set on the command line or not. This ensures that they can easily be examined and modified after being set, regardless of how they were set. This was made possible by the introduction of the aforementioned `CMAKE_INSTALL_DEFAULT_DIR` variables. - Improved directory variable documentation (based on descriptions at https://www.gnu.org/prep/standards/html_node/Directory-Variables.html) - The module now allows "<DATAROOTDIR>" to be used as a placeholder in relative directory variables. It is replaced "on the fly" with the actual path of `CMAKE_INSTALL_DATAROOTDIR`. This should more closely mimic the behavior of the old autotools build system while retaining our customizations to it, and it should retain the behavior of the old CMake build system. Closes #124
6abd3916	2016-11-15T08:47:43	Unified CMake-based build system See #56 for discussion. Fixes #21, Fixes #29, Fixes #37, Closes #56, Fixes #58, Closes #73 Obviates #82 See also: https://sourceforge.net/p/libjpeg-turbo/feature-requests/5/ https://sourceforge.net/p/libjpeg-turbo/patches/5/
739edeb8	2015-07-21T09:34:02	Further exception cleanup Use a new checked exception type (TJException) when passing through errors from the underlying C library. This gives the application a choice of catching all exceptions or just those from TurboJPEG. Throw IllegalArgumentException at the JNI level when arguments to the JNI function are incorrect, and when one of the TurboJPEG "utility" functions returns an error (because, per the C API specification, those functions will only return an error if one of their arguments is out of range.) Remove "throws Exception" from the signature of any methods that no longer pass through an error from the TurboJPEG C library. Credit Viktor for the new code Code formatting tweaks
b3817dab	2015-07-14T20:42:52	Throw idiomatic unchecked exceptions from the Java classes and JNI wrapper if there is an unrecoverable error caused by incorrect API usage (such as illegal arguments, etc.), and throw Errors if there is an unrecoverable error at the C level (such as a failed malloc() call.) Change the behavior of the bailif0() macro in the JNI wrapper so that it doesn't throw an exception for an unexpected NULL condition. In fact, in all cases, the underlying JNI API function (such as GetFieldID(), etc.) will throw an Error on its own whenever it returns NULL, so our custom exceptions were never being thrown in that case anyhow. All we need to do is just detect the error and bail out of the C code. This also corrects a couple of formatting issues (semicolons aren't needed at the end of class definitions, and @Override should be specified for the methods we're overriding from super-classes, so the compiler can sanity-check that we're actually overriding a method and not declaring a new one.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1595 632fc199-4ca6-4c93-a231-07263d6284db
1a4778f8	2015-07-07T16:39:03	Allow TJCompressor and TJDecompressor to be used with a try-with-resources statement in Java 7 and later. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1594 632fc199-4ca6-4c93-a231-07263d6284db
7a8c53e4	2015-06-19T16:07:14	Clarify that the TurboJPEG API functions/methods do not modify the source buffer. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1567 632fc199-4ca6-4c93-a231-07263d6284db
ef263e3e	2014-11-21T15:35:33	Make TJCompressor.close() and TJDecompressor.close() idempotent git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1420 632fc199-4ca6-4c93-a231-07263d6284db
3ebcf7cf	2014-11-18T21:45:34	Make TJCompressor.close() and TJDecompressor.close() idempotent git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1416 632fc199-4ca6-4c93-a231-07263d6284db
40dd3146	2014-08-17T12:23:49	Refactored YUVImage Java class so that it supports both unified YUV image buffers as well as separate YUV image planes; modified the JNI functions accordingly and added new helper functions to the TurboJPEG C API (tjPlaneWidth(), tjPlaneHeight(), tjPlaneSizeYUV()) to facilitate those modifications; changed potentially confusing "component width" and "component height" terms to "plane width" and "plane height" and modified variable names in turbojpeg.c to reflect this; numerous other documentation tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1360 632fc199-4ca6-4c93-a231-07263d6284db
580f3915	2014-08-15T14:40:36	Fix build broken by r1349 git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1351 632fc199-4ca6-4c93-a231-07263d6284db
26dd86bd	2014-08-15T14:01:21	Restore backward compatibility between libjpeg-turbo 1.3.x JAR and the new JNI library git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1349 632fc199-4ca6-4c93-a231-07263d6284db
493be617	2014-08-10T20:12:17	Clean up and consolidate notes regarding the YUV image format. This also corrects a factual error regarding the padding of the luminance plane-- because we now support 4:1:1, the component width is not necessarily padded to the nearest multiple of 2 if horizontal subsampling is used. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1342 632fc199-4ca6-4c93-a231-07263d6284db
7a6ed075	2014-03-17T11:14:52	Extend YUVImage class to allow reuse of the same buffer with different metadata; port TJBench changes that treat YUV encoding/decoding as an intermediate step of the JPEG compression/decompression pipeline rather than a separate test case; add YUV encode/decode tests to the Java version of tjbenchtest git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1184 632fc199-4ca6-4c93-a231-07263d6284db
fc26b657	2014-03-16T22:56:26	Extend the YUV decode functionality to the TurboJPEG Java API, and port the TJUnitTest modifications that treat YUV encoding/decoding as an intermediate step of the JPEG compression/decompression pipeline rather than a separate test case; Add the ability to encode YUV images from an arbitrary position in a large image buffer; Significantly refactor the handling of YUV images; numerous doc tweaks; other Java API cleanup and usability improvements git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1176 632fc199-4ca6-4c93-a231-07263d6284db
40a0a023	2014-03-16T19:33:23	Update (C) year git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1175 632fc199-4ca6-4c93-a231-07263d6284db
aa255e29	2014-03-16T18:43:42	Doc tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1173 632fc199-4ca6-4c93-a231-07263d6284db
bcb5f023	2014-03-16T18:00:59	Go ahead and deprecate the old constructor in 1.3.1 instead of in 1.4, since it uses a deprecated method git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1172 632fc199-4ca6-4c93-a231-07263d6284db
c33347c0	2014-03-15T13:25:11	Add @Deprecated to the deprecated Java methods, so javac will actually print deprecation warnings, as opposed to just listing the methods as deprecated in javadoc; remove the use of the deprecated methods by our own test programs. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1171 632fc199-4ca6-4c93-a231-07263d6284db
b1481394	2014-03-14T08:53:33	Streamline the BufferedImage functionality in the compressor so that it works the same way as compressing a "normal" image, and deprecate the old BufferedImage methods and other redundant methods. Eliminate the use of deprecated features in the test programs. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1168 632fc199-4ca6-4c93-a231-07263d6284db
a15f19f2	2014-03-11T09:46:50	Wordsmithing & formatting tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1154 632fc199-4ca6-4c93-a231-07263d6284db
7db5273e	2013-11-25T21:12:23	Per the conventions of the image compression and digital video communities, use "YCbCr" to describe the JPEG colorspace and "YUV" to describe an image format consisting of Y, Cb, and Cr planes (this partially reverts r960.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1093 632fc199-4ca6-4c93-a231-07263d6284db
b3a028e3	2013-11-25T21:08:47	Per the conventions of the image compression and digital video communities, use "YCbCr" to describe the JPEG colorspace and "YUV" to describe an image format consisting of Y, Cb, and Cr planes (this partially reverts r959.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1092 632fc199-4ca6-4c93-a231-07263d6284db
5a7e9e5b	2013-11-25T20:30:12	Per the conventions of the image compression and digital video communities, use "YCbCr" to describe the JPEG colorspace and "YUV" to describe an image format consisting of Y, Cb, and Cr planes (this partially reverts r959.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1091 632fc199-4ca6-4c93-a231-07263d6284db
07e982d9	2013-10-31T07:11:39	Deprecate and undocument the FORCE{MMX\|SSE\|SSE2\|SSE3} flags. These were originally introduced in TurboJPEG/IPP as a way to override the automatic CPU selection in the underlying IPP codec, which was closed source. They are not meaningful anymore, since libjpeg-turbo provides environment variables to accomplish the same thing and since it no longer necessarily uses x86 SIMD code behind the scenes. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1072 632fc199-4ca6-4c93-a231-07263d6284db
1e67274b	2013-10-31T05:04:51	Extend the TurboJPEG Java API to support compressing JPEG images from YUV planar images git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1071 632fc199-4ca6-4c93-a231-07263d6284db
aba7ceda	2013-08-23T07:13:59	Oops. Forgot to implement access method for the colorspace & extend TJBench git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1022 632fc199-4ca6-4c93-a231-07263d6284db
b2c4745a	2013-08-23T06:38:59	Wordsmithing git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1021 632fc199-4ca6-4c93-a231-07263d6284db
38cb1ec2	2013-08-23T04:45:43	Add CMYK support to the TurboJPEG Java API & clean up a few things in the C API git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1020 632fc199-4ca6-4c93-a231-07263d6284db
a5830628	2013-08-18T11:04:21	Add 4:1:1 subsampling support in the TurboJPEG Java API git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1017 632fc199-4ca6-4c93-a231-07263d6284db
ae92418c	2013-08-18T10:47:07	Add note regarding the fact that 4:4:0 lacks full SIMD support; Add an option for benchmarking 4:4:0 subsampling in TJBench; Wordsmithing; Disable timestamp in generated HTML files to make diffing and merging easier git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1016 632fc199-4ca6-4c93-a231-07263d6284db
f82b9f96	2013-08-18T10:39:30	Add note regarding the fact that 4:4:0 lacks full SIMD support; Add an option for benchmarking 4:4:0 subsampling in TJBench; Wordsmithing; Disable timestamp in generated HTML files to make diffing and merging easier git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1015 632fc199-4ca6-4c93-a231-07263d6284db
fef9852d	2013-04-28T01:32:52	Extend the TurboJPEG Java API to support generating YUV images with arbitrary padding and to support image scaling when decompressing to YUV git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@975 632fc199-4ca6-4c93-a231-07263d6284db
bb9e1478	2013-04-27T22:48:08	Fix backward compatibility between the Java classes and the 1.2.x JNI library (as long as the 1.3 Java features are not used.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@973 632fc199-4ca6-4c93-a231-07263d6284db
1d29c5f9	2013-04-27T20:54:44	Correct misuse of the word "pitch" + more code formatting tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@970 632fc199-4ca6-4c93-a231-07263d6284db
67bee868	2013-04-27T12:36:07	Code formatting tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@968 632fc199-4ca6-4c93-a231-07263d6284db
65d4a46d	2013-04-27T01:06:52	Java doc tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@966 632fc199-4ca6-4c93-a231-07263d6284db
00400a0a	2013-04-24T06:21:24	In order to avoid a functional regression with previous releases, the JAR file needs to be able to load either the 64-bit or 32-bit JNI library on Un*x systems. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@950 632fc199-4ca6-4c93-a231-07263d6284db
441308cf	2013-04-24T05:26:42	Move the TurboJPEG DLLs back into the system directory on Windows platforms. For Windows, it doesn't really simplify the build system to install these libraries in c:\libjpeg-turbo*, and it introduces potential problems with loading the JNI library. Specifically, if a user linked their Java app against the 64-bit libjpeg-turbo SDK and then used a 32-bit JVM at run time, they would not be able to load the 32-bit turbojpeg.dll without manipulating java.library.path or the PATH environment (and vice versa for building against the 32-bit libjpeg-turbo SDK and using a 64-bit JVM at run time.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@949 632fc199-4ca6-4c93-a231-07263d6284db
7175e517	2013-04-23T22:29:00	Further enhancements/fixes to the packaging system: -- The Mac and Cygwin packages will now be created with the directory structure defined by the configure variables "prefix", "bindir", "libdir", etc., with the exception that the docs are always installed under /usr/share/doc/{package_name}-{version} on Cygwin and /Library/Documentation/{package_name} on Mac. -- Fixed a duplicate filename warning when generating RPMs with the default prefix of /opt/libjpeg-turbo. -- Moved the TurboJPEG libraries out of the system directory on Windows and Mac. It is no longer necessary to put them there, since we are not trying to be backward compatible with TurboJPEG/IPP anymore. -- Fixed an issue whereby building the "installer" target on Windows would not build the Java JAR file, thus causing an error if the JAR had not been previously built. -- Building the "install" target on Windows will now install libjpeg-turbo into c:\libjpeg-turbo[-gcc][64] (the same directories used by the installers.) This can be overridden by setting CMAKE_INSTALL_PREFIX. -- The Java classes on all platforms will now look for the JNI library in the directory under which the build/packaging system installs it. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@946 632fc199-4ca6-4c93-a231-07263d6284db
fac3bea8	2012-09-24T02:27:55	Add a Java version of TJBench and extend the TurboJPEG Java API to support it (this involved adding a polymorphic method in TJCompressor that accepts x and y offsets into a larger buffer, similar to the previous modification that had been done to TJDecompressor.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@862 632fc199-4ca6-4c93-a231-07263d6284db
61e1341f	2012-08-24T02:44:39	If libturbojpeg.jnilib is not found on Mac systems, specifically look for it under /usr/lib, since /usr/lib isn't part of the default java.library.path on that platform. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@861 632fc199-4ca6-4c93-a231-07263d6284db
73d74c13	2012-06-29T23:46:38	Add 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. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@851 632fc199-4ca6-4c93-a231-07263d6284db
fd3aba35	2012-06-29T23:14:48	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. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@849 632fc199-4ca6-4c93-a231-07263d6284db
f659f43f	2012-06-06T08:41:06	Add x, y parameters to TJDecompressor so that it can be used to decompress to an arbitrary position in the destination image (TurboVNC needs this.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@832 632fc199-4ca6-4c93-a231-07263d6284db
67ce3b23	2011-12-19T02:21:03	Added new alpha channel colorspace constants/pixel formats, so applications can specify that they need the unused byte in a 4-component RGB output buffer set to 0xFF when decompressing. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@732 632fc199-4ca6-4c93-a231-07263d6284db
80803ae5	2011-12-15T13:12:59	"which"="that" git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@730 632fc199-4ca6-4c93-a231-07263d6284db
f5467110	2011-09-20T05:02:19	Implement custom filter callback in Java git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@707 632fc199-4ca6-4c93-a231-07263d6284db
c08e8c15	2011-09-08T23:54:40	When decompressing to a 4-byte RGB buffer, set the unused byte to 0xFF so it can be interpreted as an opaque alpha channel. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@699 632fc199-4ca6-4c93-a231-07263d6284db
9b49f0e4	2011-07-12T03:17:23	Re-work TJBUFSIZE() to take into account the level of chrominance subsampling git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@668 632fc199-4ca6-4c93-a231-07263d6284db
848f225e	2011-04-02T03:43:12	Oops. Constructor should actually do something. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@560 632fc199-4ca6-4c93-a231-07263d6284db
b2f9415a	2011-04-02T02:09:03	Slight refactor to put ScalingFactor into its own class (mainly because the $ in the class name was wreaking havoc on the build scripts, but also to add a few convenience methods to it) and to create a separate loader class so we can provide a .jar file with the MinGW distribution that loads the correct DLL git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@557 632fc199-4ca6-4c93-a231-07263d6284db
86e51f22	2011-04-01T20:31:03	Fix compiler warning with OpenJDK git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@556 632fc199-4ca6-4c93-a231-07263d6284db
1f014c32	2011-03-17T07:39:25	Fix compression from/decompression to TYPE_INT_{RGB\|BGR} BufferedImages on big endian platforms git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@520 632fc199-4ca6-4c93-a231-07263d6284db
2c74e512	2011-03-16T00:02:53	More Java API cleanup git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@519 632fc199-4ca6-4c93-a231-07263d6284db
92549de2	2011-03-15T20:52:02	Java code cleanup + Java docs git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@518 632fc199-4ca6-4c93-a231-07263d6284db
6bd084af	2011-03-04T14:10:29	Oops. Forgot to add TJTransform class git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@509 632fc199-4ca6-4c93-a231-07263d6284db
31334415	2011-03-04T13:41:05	Add access methods for getting at the JPEG buffer git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@506 632fc199-4ca6-4c93-a231-07263d6284db
d0a81363	2011-03-04T13:04:24	Handle 4:4:0 (transposed 4:2:2 subsampling) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@503 632fc199-4ca6-4c93-a231-07263d6284db
e8573015	2011-03-04T10:13:59	Implement lossless cropping interface in Java git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@501 632fc199-4ca6-4c93-a231-07263d6284db

6ec8e41f

2024-06-13T11:52:13

Handle lossless JPEG images w/2-15 bits per sample Closes #768 Closes #769

94c64ead

2024-06-17T20:27:57

Various doc tweaks - "bits per component" = "bits per sample" Describing the data precision of a JPEG image using "bits per component" is technically correct, but "bits per sample" is the terminology that the JPEG-1 spec uses. Also, "bits per component" is more commonly used to describe the precision of packed-pixel formats (as opposed to "bits per pixel") rather than planar formats, in which all components are grouped together. - Unmention legacy display technologies. Colormapped and monochrome displays aren't a thing anymore, and even when they were still a thing, it was possible to display full-color images to them. In 1991, when JPEG decompression time was measured in minutes per megapixel, it made sense to keep a decompressed copy of JPEG images on disk, in a format that could be displayed without further color conversion (since color conversion was slow and memory-intensive.) In 2024, JPEG decompression time is measured in milliseconds per megapixel, and color conversion is even faster. Thus, JPEG images can be decompressed, displayed, and color-converted (if necessary) "on the fly" at speeds too fast for human vision to perceive. (In fact, your TV performs much more complicated decompression algorithms at least 60 times per second.) - Document that color quantization (and associated features), GIF input/output, Targa input/output, and OS/2 BMP input/output are legacy features. Legacy status doesn't necessarily mean that the features are deprecated. Rather, it is meant to discourage users from using features that may be of little or no benefit on modern machines (such as low-quality modes that had significant performance advantages in the early 1990s but no longer do) and that are maintained on a break/fix basis only. - General wordsmithing, grammar/punctuation policing, and formatting tweaks - Clarify which data precisions each cjpeg input format and each djpeg output format supports. - cjpeg.1: Remove unnecessary and impolitic statement about the -targa switch. - Adjust or remove performance claims to reflect the fact that: * On modern machines, the djpeg "-fast" switch has a negligible effect on performance. * There is a measurable difference between the performance of Floyd- Steinberg dithering and no dithering, but it is not likely perceptible to most users. * There is a measurable difference between the performance of 1-pass and 2-pass color quantization, but it is not likely perceptible to most users. * There is a measurable difference between the performance of full-color and grayscale output when decompressing a full-color JPEG image, but it is not likely perceptible to most users. * IDCT scaling does not necessarily improve performance. (It generally does if the scaling factor is <= 1/2 and generally doesn't if the scaling factor is > 1/2, at least on my machine. The performance claim made in jpeg-6b was probably invalidated when we merged the additional scaling factors from jpeg-7.) - Clarify which djpeg switches/output formats cannot be used when decompressing lossless JPEG images. - Remove djpeg hints, since those involve quality vs. speed tradeoffs that are no longer relevant for modern machines. - Remove documentation regarding using color quantization with 16-bit data precision. (Color quantization requires lossy mode.) - Java: Fix typos in TJDecompressor.decompress12() and TJDecompressor.decompress16() documentation. - jpegtran.1: Fix truncated paragraph In a man page, a single quote at the start of a line is interpreted as a macro. Closes #775 - libjpeg.txt: * Mention J16SAMPLE data type (oversight.) * Remove statement about extending jdcolor.c. (libjpeg-turbo is not quite as DIY as libjpeg once was.) * Remove paragraph about tweaking the various typedefs in jmorecfg.h. It is no longer relevant for modern machines. * Remove caveat regarding systems with ints less than 16 bits wide. (ANSI/ISO C requires an int to be at least 16 bits wide, and libjpeg-turbo has never supported non-ANSI compilers.) - usage.txt: * Add copyright header. * Document cjpeg -icc, -memdst, -report, -strict, and -version switches. * Document djpeg -icc, -maxscans, -memsrc, -report, -skip, -crop, -strict, and -version switches. * Document jpegtran -icc, -maxscans, -report, -strict, and -version switches.

be96fa0a

2023-12-14T13:18:20

Doc: Lossless JPEG clarifications - Clarify that lossless JPEG is slower than and doesn't compress as well as lossy JPEG. (That should be obvious, because "lossy" literally means that data is thrown away.) - Re-generate TurboJPEG C API documentation using Doxygen 1.9.8. - Clarify that setting the data_precision field in jpeg_compress_struct to 16 requires lossless mode. - Explain what the predictor selection value actually does. (Refer to Recommendation ITU-T T.81 (1992) | ISO/IEC 10918-1:1994, Section H.1.2.1.)

55d342c7

2023-11-16T15:36:47

TurboJPEG: Expose/extend hidden "max pixels" param TJPARAM_MAXPIXELS was previously hidden and used only for fuzz testing, but it is potentially useful for calling applications as well, particularly if they want to guard against excessive memory consumption by the tj3LoadImage*() functions. The parameter has also been extended to decompression and lossless transformation functions/methods, mainly as a convenience. (It was already possible for calling applications to impose their own JPEG image size limits by reading the JPEG header prior to decompressing or transforming the image.)

6136a9e2

2023-11-16T14:12:28

Java doc: Terminology tweaks - "function" = "method" - "decompression and transform functions" = "decompression and transform operations" (for consistency with the 2.1.x documentation) - "return an error" = "throw an error" - "ceil()" = "Math.ceil()"

df9dbff8

2023-11-11T12:25:03

TurboJPEG: New param to limit virt array mem usage This corresponds to max_memory_to_use in the jpeg_memory_mgr struct in the libjpeg API, except that the TurboJPEG parameter is specified in megabytes. Because this is 2023 and computers with less than 1 MB of memory are not a thing (at least not within the scope of libjpeg-turbo support), it isn't useful to allow a limit less than 1 MB to be specified. Furthermore, because TurboJPEG parameters are signed integers, if we allowed the memory limit to be specified in bytes, then it would be impossible to specify a limit larger than 2 GB on 64-bit machines. Because max_memory_to_use is a long signed integer, effectively we can specify a limit of up to 2 petabytes on 64-bit machines if the TurboJPEG parameter is specified in megabytes. (2 PB should be enough for anybody, right?) This commit also bumps the TurboJPEG API version to 3.0.1. Since the TurboJPEG API version no longer tracks the libjpeg-turbo version, it makes sense to increment the API revision number when adding constants, to increment the minor version number when adding functions, and to increment the major version number for a complete overhaul. This commit also removes the vestigial TJ_NUMPARAM macro, which was never defined because it proved unnecessary. Partially implements #735

fc881ebb

2023-03-09T20:55:43

TurboJPEG: Implement 4:4:1 chrominance subsampling This allows losslessly transposed or rotated 4:1:1 JPEG images to be losslessly cropped, partially decompressed, or decompressed to planar YUV images. Because tj3Transform() allows multiple lossless transformations to be chained together, all subsampling options need to have a corresponding transposed subsampling option. (This is why 4:4:0 was originally implemented as well.) Otherwise, the documentation would be technically incorrect. It says that images with unknown subsampling types cannot be losslessly cropped, partially decompressed, or decompressed to planar YUV images, but it doesn't say anything about images with known subsampling types whose subsampling type becomes unknown if the image is rotated or transposed. This is one of those situations in which it is easier to implement a feature that works around the problem than to document the problem. Closes #659

96bc40c1

2023-01-26T13:11:58

Implement arithmetic coding with 12-bit precision This actually works and apparently always has worked. It only failed because the libjpeg code, which did not originally support arithmetic coding, assumed that optimize_coding should always be TRUE for 12-bit data precision.

fc01f467

2023-01-05T06:36:46

TurboJPEG 3 API overhaul (ChangeLog update forthcoming) - Prefix all function names with "tj3" and remove version suffixes from function names. (Future API overhauls will increment the prefix to "tj4", etc., thus retaining backward API/ABI compatibility without versioning each individual function.) - Replace stateless boolean flags (including TJ*FLAG_ARITHMETIC and TJ*FLAG_LOSSLESS, which were never released) with stateful integer parameters, the value of which persists between function calls. * Use parameters for the JPEG quality and subsampling as well, in order to eliminate the awkwardness of specifying function arguments that weren't relevant for lossless compression. * tj3DecompressHeader() now stores all relevant information about the JPEG image, including the width, height, subsampling type, entropy coding type, etc. in parameters rather than returning that information in its arguments. * TJ*FLAG_LIMITSCANS has been reimplemented as an integer parameter (TJ*PARAM_SCANLIMIT) that allows the number of scans to be specified. - Use the const keyword for all pointer arguments to unmodified buffers, as well as for both dimensions of 2D pointers. Addresses #395. - Use size_t rather than unsigned long to represent buffer sizes, since unsigned long is a 32-bit type on Windows. Addresses #24. - Return 0 from all buffer size functions if an error occurs, rather than awkwardly trying to return -1 in an unsigned data type. - Implement 12-bit and 16-bit data precision using dedicated compression, decompression, and image I/O functions/methods. * Suffix the names of all data-precision-specific functions with 8, 12, or 16. * Because the YUV functions are intended to be used for video, they are currently only implemented with 8-bit data precision, but they can be expanded to 12-bit data precision in the future, if necessary. * Extend TJUnitTest and TJBench to test 12-bit and 16-bit data precision, using a new -precision option. * Add appropriate regression tests for all of the above to the 'test' target. * Extend tjbenchtest to test 12-bit and 16-bit data precision, and add separate 'tjtest12' and 'tjtest16' targets. * BufferedImage I/O in the Java API is currently limited to 8-bit data precision, since the BufferedImage class does not straightforwardly support higher data precisions. * Extend the PPM reader to convert 12-bit and 16-bit PBMPLUS files to grayscale or CMYK pixels, as it already does for 8-bit files. - Properly accommodate lossless JPEG using dedicated parameters (TJ*PARAM_LOSSLESS, TJ*PARAM_LOSSLESSPSV, and TJ*PARAM_LOSSLESSPT), rather than using a flag and awkwardly repurposing the JPEG quality. Update TJBench to properly reflect whether a JPEG image is lossless. - Re-organize the TJBench usage screen. - Update the Java docs using Java 11, to improve the formatting and eliminate HTML frames. - Use the accurate integer DCT algorithm by default for both compression and decompression, since the "fast" algorithm is a legacy feature, it does not pass the ISO compliance tests, and it is not actually faster on modern x86 CPUs. * Remove the -accuratedct option from TJBench and TJExample. - Re-implement the 'tjtest' target using a CMake script that enables the appropriate tests, depending on the data precision and whether or not the Java API is part of the build. - Consolidate the C and Java versions of tjbenchtest into one script. - Consolidate the C and Java versions of tjexampletest into one script. - Combine all initialization functions into a single function (tj3Init()) that accepts an integer parameter specifying the subsystems to initialize. - Enable decompression scaling explicitly, using a new function/method (tj3SetScalingFactor()/TJDecompressor.setScalingFactor()), rather than implicitly using awkward "desired width"/"desired height" parameters. - Introduce a new macro/constant (TJUNSCALED/TJ.UNSCALED) that maps to a scaling factor of 1/1. - Implement partial image decompression, using a new function/method (tj3SetCroppingRegion()/TJDecompressor.setCroppingRegion()) and TJBench option (-crop). Extend tjbenchtest to test the new feature. Addresses #1. - Allow the JPEG colorspace to be specified explicitly when compressing, using a new parameter (TJ*PARAM_COLORSPACE). This allows JPEG images with the RGB and CMYK colorspaces to be created. - Remove the error/difference image feature from TJBench. Identical images to the ones that TJBench created can be generated using ImageMagick with 'magick composite <original_image> <output_image> -compose difference <diff_image>' - Handle JPEG images with unknown subsampling types. TJ*PARAM_SUBSAMP is set to TJ*SAMP_UNKNOWN (== -1) for such images, but they can still be decompressed fully into packed-pixel images or losslessly transformed (with the exception of lossless cropping.) They cannot be partially decompressed or decompressed into planar YUV images. Note also that TJBench, due to its lack of support for imperfect transforms, requires that the subsampling type be known when rotating, flipping, or transversely transposing an image. Addresses #436 - The Java version of TJBench now has identical functionality to the C version. This was accomplished by (somewhat hackishly) calling the TurboJPEG C image I/O functions through JNI and copying the pixels between the C heap and the Java heap. - Add parameters (TJ*PARAM_RESTARTROWS and TJ*PARAM_RESTARTBLOCKS) and a TJBench option (-restart) to allow the restart marker interval to be specified when compressing. Eliminate the undocumented TJ_RESTART environment variable. - Add a parameter (TJ*PARAM_OPTIMIZE), a transform option (TJ*OPT_OPTIMIZE), and a TJBench option (-optimize) to allow optimized baseline Huffman coding to be specified when compressing. Eliminate the undocumented TJ_OPTIMIZE environment variable. - Add parameters (TJ*PARAM_XDENSITY, TJ*PARAM_DENSITY, and TJ*DENSITYUNITS) to allow the pixel density to be specified when compressing or saving a Windows BMP image and to be queried when decompressing or loading a Windows BMP image. Addresses #77. - Refactor the fuzz targets to use the new API. * Extend decompression coverage to 12-bit and 16-bit data precision. * Replace the awkward cjpeg12 and cjpeg16 targets with proper TurboJPEG-based compress12, compress12-lossless, and compress16-lossless targets - Fix innocuous UBSan warnings uncovered by the new fuzzers. - Implement previous versions of the TurboJPEG API by wrapping the new functions (tested by running the 2.1.x versions of TJBench, via tjbenchtest, and TJUnitTest against the new implementation.) * Remove all JNI functions for deprecated Java methods and implement the deprecated methods using pure Java wrappers. It should be understood that backward API compatibility in Java applies only to the Java classes and that one cannot mix and match a JAR file from one version of libjpeg-turbo with a JNI library from another version. - tj3Destroy() now silently accepts a NULL handle. - tj3Alloc() and tj3Free() now return/accept void pointers, as malloc() and free() do. - The image I/O functions now accept a TurboJPEG instance handle, which is used to transmit/receive parameters and to receive error information. Closes #517

52659f4f

2023-01-23T09:55:13

Merge branch 'main' into dev

edbb7e6d

2023-01-23T09:32:57

Java doc: TJ.pixelSize --> TJ.getPixelSize() TJ.pixelSize isn't actually a thing. Oops.

7ab6222c

2023-01-20T14:09:25

Merge branch 'main' into dev

fb15efe9

2023-01-18T06:44:46

TurboJPEG: More documentation improvements - TJBench/TJUnitTest: Wordsmith command-line output - Java: "decompress operations"="decompression operations" - tjLoadImage(): Error message tweak - Don't mention compression performance in the description of TJXOPT_PROGRESSIVE/TJTransform.OPT_PROGRESSIVE, because the image has already been compressed at that point. (Oversights from 9a146f0f23b01869e1bf7c478e12b43f83d59c32)

6a060d8c

2023-01-17T18:32:15

TJCompressor.java: (C) header formatting tweak (apparently borked by one of the previous merge commits)

c7c02d92

2023-01-17T18:31:31

Merge branch 'main' into dev

7ed186ed

2023-01-17T18:18:27

TJDecompressor.java: Exception message tweak NO_ASSOC_ERROR is specific to JPEG source images, but the decompress() methods can handle YUV source images as well.

155a8b03

2023-01-16T17:02:01

Merge branch 'main' into dev

0c0df2d0

2023-01-16T16:52:46

TJDecompressor.java: "YUV" = "planar YUV" (Oversight from 9a146f0f23b01869e1bf7c478e12b43f83d59c32)

d4589f4f

2023-01-14T18:07:53

Merge branch 'main' into dev

9a146f0f

2023-01-06T10:29:10

TurboJPEG: Numerous documentation improvements - Wordsmithing, formatting, and grammar tweaks - Various clarifications and corrections, including specifying whether a particular buffer or image is used as a source or destination - Accommodate/mention features that were introduced since the API documentation was created. - For clarity, use "packed-pixel" to describe uncompressed source/destination images that are not planar YUV. - Use "row" rather than "line" to refer to a single horizontal group of pixels or component values, for consistency with the libjpeg API documentation. (libjpeg also uses "scanline", which is a more archaic term.) - Use "alignment" rather than "padding" to refer to the number of bytes by which a row's width is evenly divisible. This consistifies the documention of the YUV functions and tjLoadImage(). ("Padding" typically refers to the number of bytes added to each row, which is not the same thing.) - Remove all references to "the underlying codec." Although the TurboJPEG API originated as a cross-platform wrapper for the Intel Integrated Performance Primitives, Sun mediaLib, QuickTime, and libjpeg, none of those TurboJPEG implementations has been maintained since 2009. Nothing would prevent someone from implementing the TurboJPEG API without libjpeg-turbo, but such an implementation would not necessarily have an "underlying codec." (It could be fully self-contained.) - Use "destination image" rather than "output image", for consistency, or describe the type of image that will be output. - Avoid the term "image buffer" and instead use "byte buffer" to refer to buffers that will hold JPEG images, or describe the type of image that will be contained in the buffer. (The Java documentation doesn't use "byte buffer", because the buffer arrays literally have "byte" in front of them, and since Java doesn't have pointers, it is not possible for mere mortals to store any other type of data in those arrays.) - C: Use "unified" to describe YUV images stored in a single buffer, for consistency with the Java documentation. - Use "planar YUV" rather than "YUV planar". Is is our convention to describe images using {component layout} {colorspace/pixel format} {image function}, e.g. "packed-pixel RGB source image" or "planar YUV destination image." - C: Document the TurboJPEG API version in which a particular function or macro was introduced, and reorder the backward compatibility function stubs in turbojpeg.h alphabetically by API version. - C: Use Markdown rather than HTML tags, where possible, in the Doxygen comments.

98ff1fd1

2022-11-21T20:57:39

TurboJPEG: Add lossless JPEG detection capability Add a new TurboJPEG C API function (tjDecompressHeader4()) and Java API method (TJDecompressor.getFlags()) that return the bitwise OR of any flags that are relevant to the JPEG image being decompressed (currently TJFLAG_PROGRESSIVE, TJFLAG_ARITHMETIC, TJFLAG_LOSSLESS, and their Java equivalents.) This allows a calling program to determine whether the image being decompressed is a lossless JPEG image, which means that the decompression scaling feature will not be available and that a full-sized destination buffer should be allocated. More specifically, this fixes a buffer overrun in TJBench, TJExample, and the decompress* fuzz targets that occurred when attempting (in vain) to decompress a lossless JPEG image with decompression scaling enabled.

25ccad99

2022-11-16T15:57:25

TurboJPEG: 8-bit lossless JPEG support

6002720c

2022-11-15T23:10:35

TurboJPEG: Opt. enable arithmetic entropy coding

931884e7

2022-08-08T15:41:01

Java: Remove deprecated fields, ctors, and methods Most of these have been deprecated since libjpeg-turbo 1.4.x. It's time.

ba22c0f7

2022-06-24T14:03:03

tjDecompressHeader3(): Accept tables-only streams Inspired by: https://github.com/amyspark/libjpeg-turbo/commit/b3b15cfe74cf07914122e26cf1e408a9a9cf3135 Closes #604 Closes #605

c81e91e8

2021-04-05T16:08:22

TurboJPEG: New flag for limiting prog JPEG scans This also fixes timeouts reported by OSS-Fuzz.

1d7faf84

2020-10-01T18:17:46

Merge branch 'master' into dev

8e895c79

2020-10-01T18:13:35

Java dox: Fix errors w/ javadoc in Java 8 or later

fb6f5e8b

2020-06-25T21:31:11

Java/Mac:Remove obsolete libturbojpeg.jnilib alias IIRC, this was only necessary with the version of Java 1.5 that shipped with OS X 10.4 "Tiger". Apple's implementation of Java 6 ("Java for OS X Systems") supported both .jnilib and .dylib extensions for JNI libraries, but Oracle's implementation of Java has only ever supported the .dylib extension.

8cc1277b

2020-02-24T13:29:50

TJCompressor.compress(int): Fix YUV-to-JPEG error Due to an oversight, the TJCompressor.compress(int) method did not handle YUV source images. Fixes #413

eb8bba62

2018-05-16T10:49:09

Java: Further style refinements (detected by enabling additional checkstyle modules) This commit also removes unnecessary uses of the "private" modifier in the Java tests/examples. The default access modifier disallows access outside of the package, and none of these classes is in a package. The only reason we use "private" with member variables in these classes is to make checkstyle happy, because we want it to enforce that behavior in the TurboJPEG API code.

53bb9418

2018-05-15T14:51:49

Java: Reformat code per checkstyle recommendations ... and modify tjbench.c to match the variable name changes made to TJBench.java ("checkstyle" = http://checkstyle.sourceforge.net, not our regex-based checkstyle script)

b2d000e6

2018-04-11T10:47:16

"Further" = "Furthermore" Grammar Police. Has Ray Stevens taught me nothing?

19c791cd

2018-03-08T10:55:20

Improve code formatting consistency With rare exceptions ... - Always separate line continuation characters by one space from preceding code. - Always use two-space indentation. Never use tabs. - Always use K&R-style conditional blocks. - Always surround operators with spaces, except in raw assembly code. - Always put a space after, but not before, a comma. - Never put a space between type casts and variables/function calls. - Never put a space between the function name and the argument list in function declarations and prototypes. - Always surround braces ('{' and '}') with spaces. - Always surround statements (if, for, else, catch, while, do, switch) with spaces. - Always attach pointer symbols ('*' and '**') to the variable or function name. - Always precede pointer symbols ('*' and '**') by a space in type casts. - Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG API libraries (using min() from tjutil.h is still necessary for TJBench.) - Where it makes sense (particularly in the TurboJPEG code), put a blank line after variable declaration blocks. - Always separate statements in one-liners by two spaces. The purpose of this was to ease maintenance on my part and also to make it easier for contributors to figure out how to format patch submissions. This was admittedly confusing (even to me sometimes) when we had 3 or 4 different style conventions in the same source tree. The new convention is more consistent with the formatting of other OSS code bases. This commit corrects deviations from the chosen formatting style in the libjpeg API code and reformats the TurboJPEG API code such that it conforms to the same standard. NOTES: - Although it is no longer necessary for the function name in function declarations to begin in Column 1 (this was historically necessary because of the ansi2knr utility, which allowed libjpeg to be built with non-ANSI compilers), we retain that formatting for the libjpeg code because it improves readability when using libjpeg's function attribute macros (GLOBAL(), etc.) - This reformatting project was accomplished with the help of AStyle and Uncrustify, although neither was completely up to the task, and thus a great deal of manual tweaking was required. Note to developers of code formatting utilities: the libjpeg-turbo code base is an excellent test bed, because AFAICT, it breaks every single one of the utilities that are currently available. - The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been formatted to match the SSE2 code (refer to ff5685d5344273df321eb63a005eaae19d2496e3.) I hadn't intended to bother with this, but the Loongson MMI implementation demonstrated that there is still academic value to the MMX implementation, as an algorithmic model for other 64-bit vector implementations. Thus, it is desirable to improve its readability in the same manner as that of the SSE2 implementation.

dc4b9002

2017-11-16T20:43:12

TurboJPEG: Add alpha offset array/method Also, set the red/green/blue offsets for TJPF_GRAY to -1 rather than 0. It was undefined behavior for an application to use those arrays/methods with TJPF_GRAY anyhow, and this makes it easier for applications to programmatically detect whether a given pixel format has red, green, and blue components.

c0f3512d

2017-08-31T20:57:19

Merge branch 'master' into dev

32120054

2017-08-14T10:54:27

Java: Fix NullPointerException in YUVImage planes == null is a valid argument to setBuf() if alloc == true, so we need to make sure that planes is non-null before validating its length. We also need to allocate one dimension of the planes array if it's null. Fixes #168

c9453121

2017-06-29T16:49:09

TJBench: Recover from non-fatal errors if possible Previously, -stoponwarning only had an effect on the underlying TurboJPEG C functions, but TJBench still aborted if a non-fatal error occurred. This commit modifies the C version of TJBench such that it always recovers from a non-fatal error unless -stoponwarning is specified. Furthermore, the benchmark stores the details of the last non-fatal error and does not print any subsequent non-fatal error messages unless they differ from the last one. Due to limitations in the Java API (specifically, the fact that it cannot communicate errors, fatal or otherwise, to the calling program without throwing a TJException), it was only possible to make decompression operations fully recoverable within TJBench. With other operations, -stoponwarning still has an effect on the underlying C library but has no effect at the Java level. The Java API documentation has been amended to reflect that only certain methods are truly recoverable, regardless of the state of TJ.FLAG_STOPONWARNING.

dadebcd7

2017-06-28T11:43:08

TurboJPEG: Add "copy none", progressive xform opts Allow progressive entropy coding to be enabled on a transform-by-transform basis, and implement a new transform option for disabling the copying of markers. Closes #153

aba6ae59

2017-06-27T13:24:08

TurboJPEG: Opt. enable progressive entropy coding Fulfills part of the feature request in #153. Also paves the way for SIMD-accelerated progressive Huffman coding (refer to #46.)

d4092f6b

2017-06-27T10:54:21

TurboJPEG: Improve error handling - Provide a new C API function and TJException method that allows calling programs to query the severity of a compression/decompression/ transform error. - Provide a new flag that instructs the library to immediately stop compressing/decompressing/transforming if a warning is encountered. Fixes #151

d681fa76

2016-12-07T10:54:54

Build: Set install dirs in a more GNU-friendly way This builds upon the existing GNUInstallDirs module in CMake but adds the following features to that module: - The ability to override the defaults for each install directory through a new set of variables (`CMAKE_INSTALL_DEFAULT_*DIR`). Before operating system vendors began shipping libjpeg-turbo, it was meant to be a run-time drop-in replacement for the system's distribution of libjpeg, so it has traditionally installed itself under /opt/libjpeg-turbo on Un*x systems by default. On Windows, it has traditionally installed itself under %SystemDrive%\libjpeg-turbo*, which is not uncommon behavior for open source libraries (open source SDKs tend to install outside of the Program Files directory so as to avoid spaces in the directory name.) At least in the case of Un*x, the install directory behavior is based somewhat on the Solaris standard, which requires all non-O/S packages to install their files under /opt/{package_name}. I adopted that standard for VirtualGL and TurboVNC while working at Sun, because it allowed those packages to be located under the same directory on all platforms. I adopted it for libjpeg-turbo because it ensured that our files would never conflict with the system's version of libjpeg. Even though many Un*x distributions ship libjpeg-turbo these days, not all of them ship the TurboJPEG API library or the Java classes or even the latest version of the libjpeg API library, so there are still many cases in which it is desirable to install a separate version of libjpeg-turbo than the one installed by the system. Furthermore, installing the files under /opt mimics the directory structure of our official binary packages, and it makes it very easy to uninstall libjpeg-turbo. For these reasons, our build system needs to be able to use non-GNU-compliant defaults for each install directory if `CMAKE_INSTALL_PREFIX` is set to the default value. - For each directory variable, the module now detects changes to `CMAKE_INSTALL_PREFIX` and changes the directory variable accordingly, if the variable has not been changed by the user. This makes it easy to switch between our "official" directory structure and the GNU-compliant directory structure "on the fly" simply by changing `CMAKE_INSTALL_PREFIX`. Also, this new mechanism eliminated the need for the crufty mechanism that previously did the same thing just for the library directory variable. How it should work: - If a dir variable is unset, then the module will set an internal property indicating that the dir variable was initialized to its default value. - If the dir variable ever diverges from its default value, then the internal property is cleared, and it cannot be set again without unsetting the dir variable. - If the install prefix changes, and if the internal property indicates that the dir variable is still set to its default value, and if the dir variable's value is not being manually changed at the same time that the install prefix is being changed, then the dir variable's value is automatically changed to the new default value for that variable (as determined by the new install prefix.) - The directory variables are now always cached, regardless of whether they were set on the command line or not. This ensures that they can easily be examined and modified after being set, regardless of how they were set. This was made possible by the introduction of the aforementioned `CMAKE_INSTALL_DEFAULT_*DIR` variables. - Improved directory variable documentation (based on descriptions at https://www.gnu.org/prep/standards/html_node/Directory-Variables.html) - The module now allows "<DATAROOTDIR>" to be used as a placeholder in relative directory variables. It is replaced "on the fly" with the actual path of `CMAKE_INSTALL_DATAROOTDIR`. This should more closely mimic the behavior of the old autotools build system while retaining our customizations to it, and it should retain the behavior of the old CMake build system. Closes #124

6abd3916

2016-11-15T08:47:43

Unified CMake-based build system See #56 for discussion. Fixes #21, Fixes #29, Fixes #37, Closes #56, Fixes #58, Closes #73 Obviates #82 See also: https://sourceforge.net/p/libjpeg-turbo/feature-requests/5/ https://sourceforge.net/p/libjpeg-turbo/patches/5/

739edeb8

2015-07-21T09:34:02

Further exception cleanup Use a new checked exception type (TJException) when passing through errors from the underlying C library. This gives the application a choice of catching all exceptions or just those from TurboJPEG. Throw IllegalArgumentException at the JNI level when arguments to the JNI function are incorrect, and when one of the TurboJPEG "utility" functions returns an error (because, per the C API specification, those functions will only return an error if one of their arguments is out of range.) Remove "throws Exception" from the signature of any methods that no longer pass through an error from the TurboJPEG C library. Credit Viktor for the new code Code formatting tweaks

b3817dab

2015-07-14T20:42:52

Throw idiomatic unchecked exceptions from the Java classes and JNI wrapper if there is an unrecoverable error caused by incorrect API usage (such as illegal arguments, etc.), and throw Errors if there is an unrecoverable error at the C level (such as a failed malloc() call.) Change the behavior of the bailif0() macro in the JNI wrapper so that it doesn't throw an exception for an unexpected NULL condition. In fact, in all cases, the underlying JNI API function (such as GetFieldID(), etc.) will throw an Error on its own whenever it returns NULL, so our custom exceptions were never being thrown in that case anyhow. All we need to do is just detect the error and bail out of the C code. This also corrects a couple of formatting issues (semicolons aren't needed at the end of class definitions, and @Override should be specified for the methods we're overriding from super-classes, so the compiler can sanity-check that we're actually overriding a method and not declaring a new one.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1595 632fc199-4ca6-4c93-a231-07263d6284db

1a4778f8

2015-07-07T16:39:03

Allow TJCompressor and TJDecompressor to be used with a try-with-resources statement in Java 7 and later. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1594 632fc199-4ca6-4c93-a231-07263d6284db

7a8c53e4

2015-06-19T16:07:14

Clarify that the TurboJPEG API functions/methods do not modify the source buffer. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1567 632fc199-4ca6-4c93-a231-07263d6284db

ef263e3e

2014-11-21T15:35:33

Make TJCompressor.close() and TJDecompressor.close() idempotent git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1420 632fc199-4ca6-4c93-a231-07263d6284db

3ebcf7cf

2014-11-18T21:45:34

Make TJCompressor.close() and TJDecompressor.close() idempotent git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.4.x@1416 632fc199-4ca6-4c93-a231-07263d6284db

40dd3146

2014-08-17T12:23:49

Refactored YUVImage Java class so that it supports both unified YUV image buffers as well as separate YUV image planes; modified the JNI functions accordingly and added new helper functions to the TurboJPEG C API (tjPlaneWidth(), tjPlaneHeight(), tjPlaneSizeYUV()) to facilitate those modifications; changed potentially confusing "component width" and "component height" terms to "plane width" and "plane height" and modified variable names in turbojpeg.c to reflect this; numerous other documentation tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1360 632fc199-4ca6-4c93-a231-07263d6284db

580f3915

2014-08-15T14:40:36

Fix build broken by r1349 git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1351 632fc199-4ca6-4c93-a231-07263d6284db

26dd86bd

2014-08-15T14:01:21

Restore backward compatibility between libjpeg-turbo 1.3.x JAR and the new JNI library git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1349 632fc199-4ca6-4c93-a231-07263d6284db

493be617

2014-08-10T20:12:17

Clean up and consolidate notes regarding the YUV image format. This also corrects a factual error regarding the padding of the luminance plane-- because we now support 4:1:1, the component width is not necessarily padded to the nearest multiple of 2 if horizontal subsampling is used. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1342 632fc199-4ca6-4c93-a231-07263d6284db

7a6ed075

2014-03-17T11:14:52

Extend YUVImage class to allow reuse of the same buffer with different metadata; port TJBench changes that treat YUV encoding/decoding as an intermediate step of the JPEG compression/decompression pipeline rather than a separate test case; add YUV encode/decode tests to the Java version of tjbenchtest git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1184 632fc199-4ca6-4c93-a231-07263d6284db

fc26b657

2014-03-16T22:56:26

Extend the YUV decode functionality to the TurboJPEG Java API, and port the TJUnitTest modifications that treat YUV encoding/decoding as an intermediate step of the JPEG compression/decompression pipeline rather than a separate test case; Add the ability to encode YUV images from an arbitrary position in a large image buffer; Significantly refactor the handling of YUV images; numerous doc tweaks; other Java API cleanup and usability improvements git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1176 632fc199-4ca6-4c93-a231-07263d6284db

40a0a023

2014-03-16T19:33:23

Update (C) year git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1175 632fc199-4ca6-4c93-a231-07263d6284db

aa255e29

2014-03-16T18:43:42

Doc tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1173 632fc199-4ca6-4c93-a231-07263d6284db

bcb5f023

2014-03-16T18:00:59

Go ahead and deprecate the old constructor in 1.3.1 instead of in 1.4, since it uses a deprecated method git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1172 632fc199-4ca6-4c93-a231-07263d6284db

c33347c0

2014-03-15T13:25:11

Add @Deprecated to the deprecated Java methods, so javac will actually print deprecation warnings, as opposed to just listing the methods as deprecated in javadoc; remove the use of the deprecated methods by our own test programs. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1171 632fc199-4ca6-4c93-a231-07263d6284db

b1481394

2014-03-14T08:53:33

Streamline the BufferedImage functionality in the compressor so that it works the same way as compressing a "normal" image, and deprecate the old BufferedImage methods and other redundant methods. Eliminate the use of deprecated features in the test programs. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1168 632fc199-4ca6-4c93-a231-07263d6284db

a15f19f2

2014-03-11T09:46:50

Wordsmithing & formatting tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1154 632fc199-4ca6-4c93-a231-07263d6284db

7db5273e

2013-11-25T21:12:23

Per the conventions of the image compression and digital video communities, use "YCbCr" to describe the JPEG colorspace and "YUV" to describe an image format consisting of Y, Cb, and Cr planes (this partially reverts r960.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1093 632fc199-4ca6-4c93-a231-07263d6284db

b3a028e3

2013-11-25T21:08:47

Per the conventions of the image compression and digital video communities, use "YCbCr" to describe the JPEG colorspace and "YUV" to describe an image format consisting of Y, Cb, and Cr planes (this partially reverts r959.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1092 632fc199-4ca6-4c93-a231-07263d6284db

5a7e9e5b

2013-11-25T20:30:12

Per the conventions of the image compression and digital video communities, use "YCbCr" to describe the JPEG colorspace and "YUV" to describe an image format consisting of Y, Cb, and Cr planes (this partially reverts r959.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1091 632fc199-4ca6-4c93-a231-07263d6284db

07e982d9

2013-10-31T07:11:39

Deprecate and undocument the FORCE{MMX|SSE|SSE2|SSE3} flags. These were originally introduced in TurboJPEG/IPP as a way to override the automatic CPU selection in the underlying IPP codec, which was closed source. They are not meaningful anymore, since libjpeg-turbo provides environment variables to accomplish the same thing and since it no longer necessarily uses x86 SIMD code behind the scenes. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1072 632fc199-4ca6-4c93-a231-07263d6284db

1e67274b

2013-10-31T05:04:51

Extend the TurboJPEG Java API to support compressing JPEG images from YUV planar images git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1071 632fc199-4ca6-4c93-a231-07263d6284db

aba7ceda

2013-08-23T07:13:59

Oops. Forgot to implement access method for the colorspace & extend TJBench git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1022 632fc199-4ca6-4c93-a231-07263d6284db

b2c4745a

2013-08-23T06:38:59

Wordsmithing git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1021 632fc199-4ca6-4c93-a231-07263d6284db

38cb1ec2

2013-08-23T04:45:43

Add CMYK support to the TurboJPEG Java API & clean up a few things in the C API git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1020 632fc199-4ca6-4c93-a231-07263d6284db

a5830628

2013-08-18T11:04:21

Add 4:1:1 subsampling support in the TurboJPEG Java API git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1017 632fc199-4ca6-4c93-a231-07263d6284db

ae92418c

2013-08-18T10:47:07

Add note regarding the fact that 4:4:0 lacks full SIMD support; Add an option for benchmarking 4:4:0 subsampling in TJBench; Wordsmithing; Disable timestamp in generated HTML files to make diffing and merging easier git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@1016 632fc199-4ca6-4c93-a231-07263d6284db

f82b9f96

2013-08-18T10:39:30

Add note regarding the fact that 4:4:0 lacks full SIMD support; Add an option for benchmarking 4:4:0 subsampling in TJBench; Wordsmithing; Disable timestamp in generated HTML files to make diffing and merging easier git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1015 632fc199-4ca6-4c93-a231-07263d6284db

fef9852d

2013-04-28T01:32:52

Extend the TurboJPEG Java API to support generating YUV images with arbitrary padding and to support image scaling when decompressing to YUV git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@975 632fc199-4ca6-4c93-a231-07263d6284db

bb9e1478

2013-04-27T22:48:08

Fix backward compatibility between the Java classes and the 1.2.x JNI library (as long as the 1.3 Java features are not used.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@973 632fc199-4ca6-4c93-a231-07263d6284db

1d29c5f9

2013-04-27T20:54:44

Correct misuse of the word "pitch" + more code formatting tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@970 632fc199-4ca6-4c93-a231-07263d6284db

67bee868

2013-04-27T12:36:07

Code formatting tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@968 632fc199-4ca6-4c93-a231-07263d6284db

65d4a46d

2013-04-27T01:06:52

Java doc tweaks git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.3.x@966 632fc199-4ca6-4c93-a231-07263d6284db

00400a0a

2013-04-24T06:21:24

In order to avoid a functional regression with previous releases, the JAR file needs to be able to load either the 64-bit or 32-bit JNI library on Un*x systems. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@950 632fc199-4ca6-4c93-a231-07263d6284db

441308cf

2013-04-24T05:26:42

Move the TurboJPEG DLLs back into the system directory on Windows platforms. For Windows, it doesn't really simplify the build system to install these libraries in c:\libjpeg-turbo*, and it introduces potential problems with loading the JNI library. Specifically, if a user linked their Java app against the 64-bit libjpeg-turbo SDK and then used a 32-bit JVM at run time, they would not be able to load the 32-bit turbojpeg.dll without manipulating java.library.path or the PATH environment (and vice versa for building against the 32-bit libjpeg-turbo SDK and using a 64-bit JVM at run time.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@949 632fc199-4ca6-4c93-a231-07263d6284db

7175e517

2013-04-23T22:29:00

Further enhancements/fixes to the packaging system: -- The Mac and Cygwin packages will now be created with the directory structure defined by the configure variables "prefix", "bindir", "libdir", etc., with the exception that the docs are always installed under /usr/share/doc/{package_name}-{version} on Cygwin and /Library/Documentation/{package_name} on Mac. -- Fixed a duplicate filename warning when generating RPMs with the default prefix of /opt/libjpeg-turbo. -- Moved the TurboJPEG libraries out of the system directory on Windows and Mac. It is no longer necessary to put them there, since we are not trying to be backward compatible with TurboJPEG/IPP anymore. -- Fixed an issue whereby building the "installer" target on Windows would not build the Java JAR file, thus causing an error if the JAR had not been previously built. -- Building the "install" target on Windows will now install libjpeg-turbo into c:\libjpeg-turbo[-gcc][64] (the same directories used by the installers.) This can be overridden by setting CMAKE_INSTALL_PREFIX. -- The Java classes on all platforms will now look for the JNI library in the directory under which the build/packaging system installs it. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@946 632fc199-4ca6-4c93-a231-07263d6284db

fac3bea8

2012-09-24T02:27:55

Add a Java version of TJBench and extend the TurboJPEG Java API to support it (this involved adding a polymorphic method in TJCompressor that accepts x and y offsets into a larger buffer, similar to the previous modification that had been done to TJDecompressor.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@862 632fc199-4ca6-4c93-a231-07263d6284db

61e1341f

2012-08-24T02:44:39

If libturbojpeg.jnilib is not found on Mac systems, specifically look for it under /usr/lib, since /usr/lib isn't part of the default java.library.path on that platform. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@861 632fc199-4ca6-4c93-a231-07263d6284db

73d74c13

2012-06-29T23:46:38

Add 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. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@851 632fc199-4ca6-4c93-a231-07263d6284db

fd3aba35

2012-06-29T23:14:48

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. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@849 632fc199-4ca6-4c93-a231-07263d6284db

f659f43f

2012-06-06T08:41:06

Add x, y parameters to TJDecompressor so that it can be used to decompress to an arbitrary position in the destination image (TurboVNC needs this.) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@832 632fc199-4ca6-4c93-a231-07263d6284db

67ce3b23

2011-12-19T02:21:03

Added new alpha channel colorspace constants/pixel formats, so applications can specify that they need the unused byte in a 4-component RGB output buffer set to 0xFF when decompressing. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@732 632fc199-4ca6-4c93-a231-07263d6284db

80803ae5

2011-12-15T13:12:59

"which"="that" git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@730 632fc199-4ca6-4c93-a231-07263d6284db

f5467110

2011-09-20T05:02:19

Implement custom filter callback in Java git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@707 632fc199-4ca6-4c93-a231-07263d6284db

c08e8c15

2011-09-08T23:54:40

When decompressing to a 4-byte RGB buffer, set the unused byte to 0xFF so it can be interpreted as an opaque alpha channel. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@699 632fc199-4ca6-4c93-a231-07263d6284db

9b49f0e4

2011-07-12T03:17:23

Re-work TJBUFSIZE() to take into account the level of chrominance subsampling git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@668 632fc199-4ca6-4c93-a231-07263d6284db

848f225e

2011-04-02T03:43:12

Oops. Constructor should actually do something. git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@560 632fc199-4ca6-4c93-a231-07263d6284db

b2f9415a

2011-04-02T02:09:03

Slight refactor to put ScalingFactor into its own class (mainly because the $ in the class name was wreaking havoc on the build scripts, but also to add a few convenience methods to it) and to create a separate loader class so we can provide a .jar file with the MinGW distribution that loads the correct DLL git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@557 632fc199-4ca6-4c93-a231-07263d6284db

86e51f22

2011-04-01T20:31:03

Fix compiler warning with OpenJDK git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@556 632fc199-4ca6-4c93-a231-07263d6284db

1f014c32

2011-03-17T07:39:25

Fix compression from/decompression to TYPE_INT_{RGB|BGR} BufferedImages on big endian platforms git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@520 632fc199-4ca6-4c93-a231-07263d6284db

2c74e512

2011-03-16T00:02:53

More Java API cleanup git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@519 632fc199-4ca6-4c93-a231-07263d6284db

92549de2

2011-03-15T20:52:02

Java code cleanup + Java docs git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@518 632fc199-4ca6-4c93-a231-07263d6284db

6bd084af

2011-03-04T14:10:29

Oops. Forgot to add TJTransform class git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@509 632fc199-4ca6-4c93-a231-07263d6284db

31334415

2011-03-04T13:41:05

Add access methods for getting at the JPEG buffer git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@506 632fc199-4ca6-4c93-a231-07263d6284db

d0a81363

2011-03-04T13:04:24

Handle 4:4:0 (transposed 4:2:2 subsampling) git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@503 632fc199-4ca6-4c93-a231-07263d6284db

e8573015

2011-03-04T10:13:59

Implement lossless cropping interface in Java git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@501 632fc199-4ca6-4c93-a231-07263d6284db

kc3-lang/libjpeg-turbo/java/org

java/org

Log