[Bug 797169] New: compositor: Remove crossfade property and implement a more extensible interface like in glvideomixer

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797169

            Bug ID: 797169
           Summary: compositor: Remove crossfade property and implement a
                    more extensible interface like in glvideomixer
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: blocker
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: slomo at coaxion.net
        QA Contact: gstreamer-bugs at lists.freedesktop.org
                CC: tsaunier at gnome.org, ystreet00 at gmail.com
     GNOME version: ---

See summary. There are all kinds of different blending modes that could be
implemented, simply restricting ourselves between two by the way how the
current interface is chosen does not seem ideal.

glvideomixer does this in a more generic way now, but based on the exact GL API
for blending.

Suggestions?

We need to decide on this before compositor is moved to -base and stabilized.

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