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Message #04179
[Bug 798952] Re: vigra_impex bug creates 'arithmetic coded' JPEG output
** Changed in: enblend
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/798952
Title:
vigra_impex bug creates 'arithmetic coded' JPEG output
Status in Enblend:
Fix Released
Bug description:
vigra_impex has a bug which effectively means all JPEG output is
'arithmetic coded' (rather than huffman coded) if the version of
libjpeg supports it.
This is a problem as arithmetic coding isn't very portable, e.g. the
enblend 4.0 in fedora f15 is creating these JPEGs whenever JPEG is
selected for output.
The upstream vigra fix is these two changesets:
http://www.informatik.uni-hamburg.de/~meine/hg/vigra/rev/e54137017af7
http://www.informatik.uni-hamburg.de/~meine/hg/vigra/rev/f5e29e0bdfe0
It probably isn't worth backporting all this to enblend, a simple fix
is to just comment out src/vigra_impex/jpeg.cxx line 421.
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References