[Bug 736322] Unlimited queue for PAUSE and OPTION respons.

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=736322
  GStreamer | gst-rtsp-server | unspecified

--- Comment #5 from Wim Taymans <wim.taymans at gmail.com> 2014-09-15 12:42:04 UTC ---
It's the send_lock that is causing trouble. It is taken when sending a message
(from the appsink render callback). The callback is then blocking because the
queue is full. When a pause request comes in, it tries to pause the appsink,
which will deadlock because it is still blocked in the render callback.

What should happen is that when pausing/stopping etc, we make sure no render
method is blocking (by flushing it or unlocking it or so) before doing the
state change. Increasing the queue limit is one way of doing that.

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