hugin-devs team mailing list archive

[Bruno Postle <798952@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

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.

** Affects: enblend
     Importance: High
         Status: New

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https://bugs.launchpad.net/bugs/798952

Title:
  vigra_impex bug creates 'arithmetic coded' JPEG output

Status in Enblend:
  New

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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