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

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=704881

Edward Hervey <bilboed at bilboed.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #77 from Edward Hervey <bilboed at bilboed.com> ---
The reason seems to be that there are various places where the captions should
be outputted/rendered *during* the parsing of the DTVCC packet.

But the way it was refactored it ends up with everything cleared when the DTVCC
packet parsing returns ... so there's nothing to display. Ideally there should
be a callback that a user of the cea708 decoder could provide where it can then
grab the current contents.

Also the actual rendering (or conversion to pango) should be put outside of the
actual cea708 decoder. That would be more flexible (instead of being tied to
pango-only rendering).

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