[Bug 727102] rtsp-media: deadlock with dynamic pipelines when preroll fails

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727102
  GStreamer | gst-rtsp-server | git

--- Comment #2 from Aleix Conchillo Flaqué <aleix at oblong.com> 2014-03-26 17:34:38 UTC ---
Created an attachment (id=273010)
 View: https://bugzilla.gnome.org/attachment.cgi?id=273010
 Review: https://bugzilla.gnome.org/review?bug=727102&attachment=273010

don't add stream if media is not preparing

The following patch solves the deadlock, but I'm not really convinced is the
right way to do this.

Probably a better way to do this would be making the preroll asynchronous as
suggested by the FIXME note in the code. I think it would fix it too.

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