[Bug 704881] Partial ATSC_user_data and CEA-708 Closed Captions Support

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=704881
  GStreamer | gst-plugins-bad | git

Sebastian Dröge (slomo) <slomo> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
                 CC|                            |slomo at circular-chaos.org
     Ever Confirmed|0                           |1

--- Comment #3 from Sebastian Dröge (slomo) <slomo at circular-chaos.org> 2013-07-26 07:25:41 UTC ---
Looks indeed like a good start, but as you said this would seem better to be
integrated into mpegvideoparse, h264parse, etc. Maybe with a helper library to
put common code in a single place.

However for adding multiple srcpads to a parser there are changes necessary in
decodebin:
1) decodebin needs to detect these multi-srcpad parsers still as parsers (thus
use the capsfilter hack for its main srcpad, but only for that) and
additionally detect them as demuxers (thus use the multiqueue after all
srcpads).
2) decodebin/uridecodebin/playbin need support for late pads. That is pads that
are added after no-more-pads (or after multiqueue overrun, which is handled
like no-more-pads). These should be included in the current stream group
instead of being ignored. This shouldn't be too difficult but might break some
assumptions in a few places.


Also would be good to split the patch into smaller pieces to make it easier to
review :)

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