./graphics/jpeg_ls, JPEG-LS codec (lossless/near-lossless codec)

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Branch: CURRENT, Version: 2.2, Package name: jpeg_ls-2.2, Maintainer: pkgsrc-users

This software package contains an implementation of JPEG-LS, the emerging
lossless/near-lossless compression standard for continuous-tone images being
developed by ISO/IEC JTC1/SC29/WG1 (draft document FCD14495 as of November
1997). The names of the executables in the software package derive from the
acronym LOCO, as the core of the new standard is based on the LOCO-I algorithm
(LOw COmplexity LOssless COmpression for Images) developed at Hewlett-Packard
Laboratories (reference: M. Weinberger, G. Seroussi, G. Sapiro, "LOCO-I: A Low
Complexity, Context-Based, Lossless Image Compression Algorithm," Proc. IEEE
Data Compression Conference, Snowbird, Utah, March-April 1996).

The term "near-lossless compression" refers to a lossy algorithm for which each
decompressed image sample differs from the corresponding original image sample
by not more than a pre-specified value, the (usually small) "loss." Lossless
compression corresponds to loss=0. Even though the term "continuous-tone image"
refers in principle to any image whose components have more than one bit per
sample, palletized images may require a reordering of the color palette for best
compression results using LOCO-I on the array of color indices. This
functionality is not implemented in the present software, although it is
supported by the new standard, and is easy enough to implement with the tools
given. Notice, however, that LOCO-I and JPEG-LS were not designed, and might not
give optimal performance, for images that have been palletized through
dithering.


Master sites:

SHA1: d4fde989359eebdc98cf57feeac3076fdfd06c64
RMD160: e0879e170ee18fae46d148c711a8b5a398586cd9
Filesize: 834.254 KB

Version history: (Expand)


CVS history: (Expand)


   2015-11-03 22:34:36 by Alistair G. Crooks | Files touched by this commit (610)
Log message:
Add SHA512 digests for distfiles for graphics category

Problems found with existing digests:
	Package fotoxx distfile fotoxx-14.03.1.tar.gz
	ac2033f87de2c23941261f7c50160cddf872c110 [recorded]
	118e98a8cc0414676b3c4d37b8df407c28a1407c [calculated]
	Package ploticus-examples distfile ploticus-2.00/plnode200.tar.gz
	34274a03d0c41fae5690633663e3d4114b9d7a6d [recorded]
	da39a3ee5e6b4b0d3255bfef95601890afd80709 [calculated]

Problems found locating distfiles:
	Package AfterShotPro: missing distfile AfterShotPro-1.1.0.30/AfterShotPro_i386.deb
	Package pgraf: missing distfile pgraf-20010131.tar.gz
	Package qvplay: missing distfile qvplay-0.95.tar.gz

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.
   2013-04-07 22:49:45 by Blue Rats | Files touched by this commit (91)
Log message:
Edited DESCR in the case of:
 File too long (should be no more than 24 lines).
 Line too long (should be no more than 80 characters).
 Trailing empty lines.
 Trailing white-space.
Trucated the long files as best as possible while preserving the most info
contained in them.
   2013-04-06 17:46:40 by Blue Rats | Files touched by this commit (52)
Log message:
'You can use "foo" instead of "${WRKSRC}/foo".'
   2012-12-20 22:52:28 by Joerg Sonnenberger | Files touched by this commit (3)
Log message:
Consistently use void.
   2012-10-06 16:11:27 by Aleksej Saushev | Files touched by this commit (427)
Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.
   2009-06-14 19:59:32 by Joerg Sonnenberger | Files touched by this commit (263)
Log message:
Remove @dirrm entries from PLISTs
   2009-05-19 10:59:39 by Thomas Klausner | Files touched by this commit (383)
Log message:
Use standard location for LICENSE line (in MAINTAINER/HOMEPAGE/COMMENT
block). Uncomment some commented out LICENSE lines while here.
   2008-03-04 16:39:11 by Johnny C. Lam | Files touched by this commit (46)
Log message:
Mechanical changes to add DESTDIR support to packages that install
their files via a custom do-install target.