[Bug 733614] Zero copy path between omxvideodec and v4l2sink

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=733614
  GStreamer | gst-omx | git

--- Comment #25 from Aurélien Zanelli <aurelien.zanelli at parrot.com> 2014-09-16 13:28:24 UTC ---
As pointed out by Sebastian, UseBuffer will mainly depend of the component and
client behavior. For instance Android passes a NativeBuffer handler rather than
a memory pointer. Also we can't be sure with UseBuffer or v4l2 userptr that it
will works in all cases, that's why I think they shall not be used as default
but just in a specific environment.

By the way, I think the main issue is about the omx bufferpool, push/copy mode
and the fact that omxvideodec doesn't set its own bufferpool in
decide_allocation.
When I have some time, I will try to poke at this :)

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