[Bug 698712] playbin: autoplug video decoder and sink based on caps features

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=698712
  GStreamer | gst-plugins-base | git

--- Comment #73 from Sebastian Dröge <slomo at circular-chaos.org> 2013-05-06 15:06:57 UTC ---
Hmm, what about only sorting the GSequence by the decoder factory (and nothing
else).

1) Creation is trivial and we get the insertion advantage there
2) Not so trivial, we would create a list of possible decoders in
autoplug_select and only sort this small list by our metrics (number of common
caps features, etc). Gives us the lookup advantage plus a small extra cost for
sorting a list with less than 10 elements (which is basically for free)
3) We would use lookup there and then take the first iterator to the used
decoder factory, and continue iterating from there on until the decoder factory
changes. Gives us the lookup advantage and no extra costs

What do you think? Am I missing something?

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