Independent JPEG Group's JPEG Software
Software to implement JPEG image compression and decompression. JPEG
(pronounced "jay-peg") is a standardized compression method for
full-color and grayscale images. JPEG is intended for compressing
"real-world" scenes (most of the time these are pictures that have been
scanned-in with a scanner or taken with a digital camera). Cartoons and
other nonrealistic images are not its strong suit. It should be noted
that JPEG output is not necessarily the same as its input. If this is a
factor for you, do not use it. With typical real-world scenes, JPEG can
achieve high compression rates without noticeable differences. If you
can accept pictures of lower quality, JPEG can achieve amazingly high
compression rates.
There are some library functions available for reading and writing JPEG
files. The 'cjpeg' and 'djpeg' applications use the library to make
conversions between JPEG and other popular graphic file formats
possible. The JPEG library is meant to be used within other
applications.
Cjpeg compresses the input file, or standard input if no filename is
given, and produces a JPEG/JFIF file as standard output. Currently
supported input file formats include: PPM (PBMPLUS color format), PGM
(PBMPLUS Grayscale format), BMP, GIF, Targa, and RLE (Utah Raster
Toolkit Format) (RLE is only supported if the RLE library is
available). Djpeg decompresses a JPEG file into one of the above
mentioned formats.
- Devel package for openSUSE:Factory
-
12
derived packages
- Links to openSUSE:Factory / libjpeg-turbo
- Download package
-
Checkout Package
osc -A https://api.opensuse.org checkout graphics/libjpeg-turbo && cd $_ - Create Badge
Source Files
| Filename | Size | Changed |
|---|---|---|
| _link | 0000000148 148 Bytes | |
| _multibuild | 0000000065 65 Bytes | |
| baselibs.conf | 0000000393 393 Bytes | |
| libjpeg-turbo-1.3.0-tiff-ojpeg.patch | 0000001970 1.92 KB | |
| libjpeg-turbo-3.0.1.tar.gz | 0002800900 2.67 MB | |
| libjpeg-turbo-3.0.1.tar.gz.sig | 0000000543 543 Bytes | |
| libjpeg-turbo.changes | 0000048907 47.8 KB | |
| libjpeg-turbo.keyring | 0000001858 1.81 KB | |
| libjpeg-turbo.spec | 0000006805 6.65 KB |
Revision 149 (latest revision is 154)
Petr Gajdos (pgajdos)
accepted
request 1136025
from
Dirk Mueller (dirkmueller)
(revision 149)
- update to 3.0.1 (bsc#1211542, CVE-2023-2804):
* The x86-64 SIMD functions now use a standard stack frame,
prologue, and epilogue so that debuggers and profilers can
reliably capture backtraces from within the functions.
* Fixed two minor issues in the interblock smoothing algorithm
that caused mathematical (but not necessarily perceptible)
edge block errors when decompressing progressive JPEG images
exactly two MCU blocks in width or that use vertical
chrominance subsampling.
* The TurboJPEG API now supports 4:4:1 (transposed 4:1:1)
chrominance subsampling, which allows losslessly transposed or
rotated 4:1:1 JPEG images to be losslessly cropped, partially
decompressed, or decompressed to planar YUV images.
* Fixed various segfaults and buffer overruns (CVE-2023-2804)
* that occurred when attempting to decompress various
specially-crafted malformed 12-bit-per-component and
16-bit-per-component lossless JPEG images using color
quantization or merged chroma upsampling/color conversion. The
underlying cause of these issues was that the color
quantization and merged chroma upsampling/color conversion
algorithms were not designed with lossless decompression
in mind. Since libjpeg-turbo explicitly does not support color
conversion when compressing or decompressing lossless JPEG
images, merged chroma upsampling/color conversion never should
have been enabled for such images. Color quantization is a
legacy feature that serves little or no purpose with lossless
JPEG images, so it is also now disabled when decompressing such
images. (As a result, djpeg can no longer decompress a
lossless JPEG image into a GIF image.)
* Fixed an oversight in 1.4 beta1[8] that caused various
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