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 |
|---|---|---|
| baselibs.conf | 0000000026 26 Bytes | |
| libjpeg-turbo-1.1.1-int32.patch | 0000000287 287 Bytes | |
| libjpeg-turbo-1.1.1-tiff-ojpeg.patch | 0000001966 1.92 KB | |
| libjpeg-turbo-1.1.1.tar.bz2 | 0001230318 1.17 MB | |
| libjpeg-turbo.changes | 0000002367 2.31 KB | |
| libjpeg-turbo.spec | 0000003972 3.88 KB | |
| ready | 0000000000 0 Bytes |
Revision 6 (latest revision is 154)
Petr Gajdos (pgajdos)
committed
(revision 6)
- updated to 1.1.1:
* Fixed a 1-pixel error in row 0, column 21 of the luminance
plane generated by tjEncodeYUV().
* libjpeg-turbo's accelerated Huffman decoder previously
ignored unexpected markers found in the middle of the
JPEG data stream during decompression. It will now
hand off decoding of a particular block to the unaccelerated
Huffman decoder if an unexpected marker is found, so that
the unaccelerated Huffman decoder can generate an appropriate
warning.
* Fixed a bug in jpeg_read_coefficients() whereby it would
not initialize cinfo->image_width and cinfo->image_height
if libjpeg v7 or v8 emulation was enabled. This specifically
caused the jpegoptim program to fail if it was linked against
a version of libjpeg-turbo that was built with libjpeg v7 or
v8 emulation.
* Eliminated excessive I/O overhead that occurred when reading
BMP files in cjpeg.
*
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