[Pan-users] Re: Support for JP2 format?

[Duncan]

Steven Ellis posted <address@hidden>, excerpted below, 
on Sun, 26 Dec 2004 23:46:11 +1300:

> My other problem has been finding a suitable image viewer for Linux with 
> JPEG2000 support. Can't find a single one under a vanilla Suse 9.2 Pro 
> install.

Hmm...  don't know about a viewer per se, but an "emerge -S 2000" here on
Gentoo reveals a library (interesting enough, most hits were on
eDonkey2000 <g>) ... 

*  media-libs/jasper
      Latest version available: 1.701.0
      Latest version installed: [ Not Installed ]
      Size of downloaded files: 1,329 kB
      Homepage:    http://www.ece.uvic.ca/~mdadams/jasper/
      Description: JasPer is a software-based implementation of the codec
                   specified in the emerging JPEG-2000 Part-1 standard
      License:     JasPer

Likewise, a grep of use.local.desc (a description of local-scope optional
USE flags that can be enabled for a package at emerge time) for 2k results
in this output:

kde-base/kdegraphics:jpeg2k - Enable support for jpeg2k (jasper)

Thus, at least one package in kdegraphics (I'd guess the kview
kpart) includes support for the jasper library above.  Do note that this
would only catch packages where the Gentoo developers have chosen to key
support for an option on a USE flag. It's likely there are additional
graphics packages that support the jasper libraries based on unkeyed
./configure-time detection, or simply require that it be installed for
them to link to, or they fail.

I also see the following, grepping for jp2:

media-gfx/graphicsmagick:jp2 - enable jpeg v2 support

Whether that's the same thing or something different, I'm not sure, but
I'd guess it's the same.

Non-source based distributions /generally/ compile support for everything
they can into their binaries, unless there's a legal issue with doing so
or something, which means there's a very good chance these apps have that
support in SuSE, particularly if you have libjasper or something similarly
named on your system or they want to pull it in when you install them.

As you can tell from the emerge -S output above, I don't have the jasper
library installed here, altho KDE is my preferred desktop and I have
kdegraphics installed, because I don't have that USE flag set so it didn't
find it necessary to pull in jasper before compiling kdegraphics, and
haven't otherwise had it merged either directly or as a dependency.

-- 
Duncan - List replies preferred.   No HTML msgs.
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