[Bug 738152] v4l2sink: leak with output device

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=738152
  GStreamer | gst-plugins-good | git

--- Comment #4 from Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> 2014-10-09 16:17:11 UTC ---
Created an attachment (id=288142)
 View: https://bugzilla.gnome.org/attachment.cgi?id=288142
 Review: https://bugzilla.gnome.org/review?bug=738152&attachment=288142

v4l2sink: Implement unlock/unlock_stop

This is not fully tested, but I think this patch is what you are looking for.
This code will trigger when going to READY state, and also when seeking, please
test carefully.

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