[Bug 754178] uridecodebin: gst-discoverer doesn't detect both audio and video of RTSP streams

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=754178

--- Comment #27 from Mathieu Duponchelle <mduponchelle1 at gmail.com> ---
(In reply to Olivier Crête from comment #26)
> (In reply to Mathieu Duponchelle from comment #24)
> > Why do we need to check for dec->pending here ?
> 
> Because we need for the no-more-pads from the source I think, otherwise we
> get an empty topology for RTSP. I think it's basically the same thing that
> was done with the redundant pending_topologies.

I don't understand that, where do we "get an empty topology" ? In discoverer ?
If so, how can it be empty, as what now triggers uuridecodebin to post a
topology is getting a (presumably non-empty) topology from one of its
decodebins.

As we increment ->pending along with prepending to the list of decodebins, I
think checking for it and for "all_topos" is redundant ?

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