[Bug 730960] tsdemux: allow changing program in playing

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=730960
  GStreamer | gst-plugins-bad | unspecified

Thiago Sousa Santos <thiagossantos> changed:

           What    |Removed                     |Added
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 Attachment #277491|0                           |1
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--- Comment #10 from Thiago Sousa Santos <thiagossantos at gmail.com> 2014-06-19 15:04:22 UTC ---
Created an attachment (id=278772)
 View: https://bugzilla.gnome.org/attachment.cgi?id=278772
 Review: https://bugzilla.gnome.org/review?bug=730960&attachment=278772

tsdemux: allow program-number switching in playing

Use pad groups switching to add new pads for the newly selected
program when then remove the old ones. Pads are kept around in case
the user selects the same program again in the future.

To be able to properly switch the program's exposing state is stored
with the programs. The current exposed program is moved to old_program
while the newly selected hasn't all its pads exposed. After that
the old_program is removed

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