[Bug 667217] resindvd: use decodebin2 so needed parsers are plugged

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=667217
  GStreamer | gst-plugins-bad | git

--- Comment #6 from Rob Clark <rob at ti.com> 2012-01-04 14:11:48 UTC ---
(In reply to comment #4)
> Or you implement renegotiation in decodebin2 but that will be almost impossible
> in 0.10 and quite some work in 0.11. But by this the autoplug-* signals of
> decodebin2 could be proxied by resndvd and could then be used by uridecodebin
> and playbin2 to allow better selection of the correct decoders.

That sounds like the more correct solution, although not sure how feasible it
is in the short term (0.10)..

I wonder about a simpler hack.. just detect caps changing and re-create the
decodebin2 within resndvd?

> You'll probably need parsers for the audio and video case though...

it would be a good thing to allow for parsers on audio side too..  although cpu
and neon are good enough these days that the overhead of dealing with a dsp
usually outweighs the benefit of offload.  And just sticking with the sw decode
elements (I guess gst-ffmpeg ends up handling most of the audio) seems to work
for now without parsers.

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