[Bug 783255] New: adaptivedemux: release the manifest lock ...

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=783255

            Bug ID: 783255
           Summary: adaptivedemux: release the manifest lock ...
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: All
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: mduponchelle1 at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

before broadcasting preroll.

The deadlock was as follows:

-> The subclass pushes a buffer on a newly-created stream in T1
-> We take the preroll lock in T1, to handle_preroll
-> The demuxer is stopped in T2, we take the MANIFEST_LOCK
-> T1 starts blocking because it received a reconfigure event
   and needs to take the MANIFEST_LOCK
-> T2 deadlocks because it now wants the preroll_lock.

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