[Bug 742110] New: video: Add support for BT2020 colorspace (UHD)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=742110
  GStreamer | gst-plugins-base | unspecified

           Summary: video: Add support for BT2020 colorspace (UHD)
    Classification: Platform
           Product: GStreamer
           Version: unspecified
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: slomo at coaxion.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Spec can be read here: http://www.itu.int/rec/R-REC-BT.2020-1-201406-I/en

Attached patch adds all the relevant values, the only thing that is a bit
problematic is that there is a new gamma curve but only for 12 bit. Does it
matter?

Also we assume now that >=2160 height uses the BT2020 colorspace instead of
BT709.

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