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 | |
baselibs.conf | 0000000393 393 Bytes | |
libjpeg-turbo-1.3.0-tiff-ojpeg.patch | 0000001966 1.92 KB | |
libjpeg-turbo-2.1.5.1.tar.gz | 0002264936 2.16 MB | |
libjpeg-turbo-2.1.5.1.tar.gz.sig | 0000000543 543 Bytes | |
libjpeg-turbo.changes | 0000042416 41.4 KB | |
libjpeg-turbo.keyring | 0000001858 1.81 KB | |
libjpeg-turbo.spec | 0000005549 5.42 KB | |
libjpeg62-turbo.spec | 0000003821 3.73 KB |
Revision 136 (latest revision is 154)
- update to 2.1.5.1: * Fixed a regression introduced by 2.0 beta1[15] that caused a buffer overrun in the progressive Huffman encoder when attempting to transform a specially-crafted malformed 12-bit-per-component JPEG image into a progressive 12-bit-per-component JPEG image using a 12-bit-per-component build of libjpeg-turbo. * Fixed an issue whereby, when using a 12-bit-per-component build of libjpeg-turbo (-DWITH_12BIT=1), passing samples with values greater than 4095 or less than 0 to jpeg_write_scanlines() caused a buffer overrun or underrun in the RGB-to-YCbCr color converter. * Fixed a floating point exception that occurred when attempting to use the jpegtran -drop and -trim options to losslessly transform a specially-crafted malformed JPEG image. * Fixed an issue in tjBufSizeYUV2() whereby it returned a bogus result, rather than throwing an error, if the align parameter was not a power of 2. * Fixed a similar issue in tjCompressFromYUV() whereby it generated a corrupt JPEG image in certain cases, rather than throwing an error, if the align parameter was not a power of 2. * Fixed an issue whereby tjDecompressToYUV2(), which is a wrapper for tjDecompressToYUVPlanes(), used the desired YUV image dimensions rather than the actual scaled image dimensions when computing the plane pointers and strides to pass to tjDecompressToYUVPlanes(). This caused a buffer overrun and subsequent segfault if the desired image dimensions exceeded the scaled image dimensions. * Fixed an issue whereby, when decompressing a 12-bit-per-component JPEG image (-DWITH_12BIT=1) using an alpha-enabled output color space such as JCS_EXT_RGBA, the alpha channel was set to 255 rather than 4095. * Fixed an issue whereby the Java version of TJBench did not accept a range of quality values. * Fixed an issue whereby, when -progressive was passed to TJBench,
Comments 0