[Bug 595520] Implement a generic cairo overlay

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Sat Feb 26 10:20:40 PST 2011


https://bugzilla.gnome.org/show_bug.cgi?id=595520
  GStreamer | gst-plugins-good | git

--- Comment #10 from Sebastian Dröge <slomo at circular-chaos.org> 2011-02-26 18:20:36 UTC ---
The performance impact if no drawing is done should be minimal, only a cairo
surface around existing data and a cairo context is created. These are just
some memory allocations. The bigger problem is, that cairo only supports
ARGB/xRGB currently and you always need colorspace conversion to this, no
matter if you're actually drawing something or not. This is going to hurt
performance and can only be fixed by adding YUV support to cairo

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