[Bug 726107] Drain pipeline to support adaptive streaming scenarios and partially fix gpu resource leaks

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=726107
  GStreamer | gst-omx | git

--- Comment #4 from Josep Torra Valles <n770galaxy at gmail.com> 2014-03-25 15:38:57 UTC ---
Sure, but for the time being this is the only way to ensure that buffers are
released before deallocate them.

And it's in the line of
http://cgit.freedesktop.org/gstreamer/gstreamer/commit/?id=093574053fae243ec5fcfd6adae8185053b1e896

I think that we can adopt this change as an interim solution until there's a
new API to handle the use case in a better way.

(In reply to comment #3)
> I've discussed with Jan during the hackfest, and DRAIN query was not designed
> for this purpose. Wim has proposed to introduce a RECLAIM event, or some more
> generic mechanism, where the buffers would be drained and copied, in order to
> release them as fast as possible.
> 
> Refer to: https://bugzilla.gnome.org/show_bug.cgi?id=682770

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