[gstreamer-bugs] [Bug 624266] New: [playbin2] Internal uridecodebin are not properly removed in READY=>NULL

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=624266
  GStreamer | gst-plugins-base | git

           Summary: [playbin2] Internal uridecodebin are not properly
                    removed in READY=>NULL
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: bilboed at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


When one re-uses playbin2 after having it set it to NULL, playbin2 will end up
still having the previously used uridecodebin since they are not removed from
playbin2 in READY=>NULL.

This error will cause (amongst other things) this issue:
* you play some files/streams in totem
* one of them has an error
 * totem sets playbin2 to NULL
* user clicks on the next stream
 * totem sets playbin2 to PAUSED/PLAYING
  * previous (erroring) uridecodebin will be set to PAUSED/PLAYING and you will
get the errors again.

The following patch fixes the issue.

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