[Bug 638578] [jp2kdec] Add support for 12 bit sRGB images

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=638578
  GStreamer | gst-plugins-bad | 0.10.20

--- Comment #4 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2011-11-01 22:07:33 UTC ---
Created an attachment (id=200462)
 View: https://bugzilla.gnome.org/attachment.cgi?id=200462
 Review: https://bugzilla.gnome.org/review?bug=638578&attachment=200462

jp2k: support for decoding 12 bit components

Since we don't have a 12 bit depth format in GStreamer,
I chose to convert to r210 (10 bit depth), as the next
possible format is ARGB with 16 bit depth, and we don't
really need an alpha channel here. This is arbitrary,
and others might prefer using the 64 bit format anyway,
this is changeable easily enough if desired.

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