[Bug 745107] glimagesink: implement GstVideoOverlayCompositionMeta

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=745107

Lubosz Sarnecki <lubosz at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |lubosz at gmail.com

--- Comment #1 from Lubosz Sarnecki <lubosz at gmail.com> ---
I can reproduce the performance issue when playing a 4k video. It runs
noticeably smoother without the textoverlay.

How can a performance gain can be achieved by implementing
GstVideoOverlayCompositionMeta? 

The only place I where this used is tests/check/elements/textoverlay.c.

According to the documentation, the raw buffer should be blended over the GL
buffer in the sink. How should the pipeline look in this case?

As a side note, I would like to see a gl element rendering fonts using this:
https://code.google.com/p/glyphy/

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