[gstreamer-bugs] [Bug 625817] New: colorlut: new plugin for lookup table color mapping

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=625817
  GStreamer | gst-plugins-bad | unspecified

           Summary: colorlut: new plugin for lookup table color mapping
    Classification: Desktop
           Product: GStreamer
           Version: unspecified
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: fargiolas at gnome.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Maps color from the video input to a lookup table, either sampling luma 
and and looking it up in the table or sampling each color and looking them 
up in the table.
Provides 4 presets for now: Heat camera effect, Sepia toning, Xray (invert 
colors and make them cyanish), Cross processing.
Lookup tables are currently hardcoded, detailed steps to generate them are 
explained in the code. Would be nice as a future improvement to make them  
loadable from an image file or even exported Gimp curves.

Spin-off from https://bugzilla.gnome.org/show_bug.cgi?id=625722#c17
Answering Sebastian's comments from that bug:
All RGB(A/x) combinations are already supported. YUV support would be 
probably trivial for the luma based mappings (just sample Y and look it 
up) but quite tricky for the rgb based ones (currently just xpro).

I fixed debug handling and changed some string, not sure what polishing 
it still needs :)

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