[Bug 737421] New: dashdemux: Playback may attempt to start in wrong period for a live stream

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=737421
  GStreamer | gst-plugins-bad | git

           Summary: dashdemux: Playback may attempt to start in wrong
                    period for a live stream
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: david.waring at rd.bbc.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=287143)
 View: https://bugzilla.gnome.org/attachment.cgi?id=287143
 Review: https://bugzilla.gnome.org/review?bug=737421&attachment=287143

dashdemux: Find first period for live streams

dashdemux assumes all streams start in the first period in the MPD. For live
streams this may not be the case, current wall-clock time may fall within a
later period.

Currently this will cause dashdemux to set-up for the first period, detect that
it has immediately gone beyond the end of that period and move to the next,
until it gets to the present period.

This patch finds the period within which the current wall-clock time falls, for
live streams, and uses that when initialising playback so that playback starts
within the right period.

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