[gstreamer-bugs] [Bug 610894] New: send FLUSH_STOP after FLUSH_START in videomixer

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=610894
  GStreamer | gst-plugins-good | git

           Summary: send FLUSH_STOP after FLUSH_START in videomixer
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: alessandro.d at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Created an attachment (id=154555)
 View: https://bugzilla.gnome.org/attachment.cgi?id=154555
 Review: https://bugzilla.gnome.org/review?bug=610894&attachment=154555

proposed fix

during seeking, videomixer sends a FLUSH_START event downstream to unblock
collectpads. It never sends FLUSH_STOP though, it relies on upstream elements
to do that.

With gnonlin, it can happen that videomixer is unlinked (so no upstream) when a
seek is issued, so a seek leaves videomixer:src and downstream elements
flushing.

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