[Bug 669310] playbin2 doesn't render subpicture/x-dvb text

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=669310
  GStreamer | gst-plugins-base | 0.10.35

--- Comment #2 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2012-02-03 18:48:17 UTC ---
Created an attachment (id=206709)
 View: https://bugzilla.gnome.org/attachment.cgi?id=206709
 Review: https://bugzilla.gnome.org/review?bug=669310&attachment=206709

dvbsuboverlay: do not drop subtitles when no 'end of display' was found

The 'end of display' handler code seems to not read the packet at all,
but actually queues the new subtitle onto the overlay. Some sample I've
seen has DVB subtitles that do not have that 'end of display', and they
look believable when the queuing code is called even in the absence of
this part. So it seems safe to call at the end of parsing, if it was
not called yet for this subtitle.

This fixes subtitles in the sample on the bug below.

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