[Bug 682110] New: [isomp4/qtdemux] Discont flag set on multiple buffers in push mode

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=682110
  GStreamer | gst-plugins-good | 0.11.x

           Summary: [isomp4/qtdemux] Discont flag set on multiple buffers
                    in push mode
    Classification: Platform
           Product: GStreamer
           Version: 0.11.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: rawoul at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


When playing an mp4 file in push mode, I receive multiple successive buffers
with the discont flag set on stream start, on each stream. Only the first
buffer should have the discont flag set for each stream.

The problem is that gst_adapter_take_buffer might return a region copy of the
original buffer pushed in the adapter, and the copy includes the buffer flags.
So if an input buffer has the discont flag and it is cut in two output buffers,
both buffers will have the discont flag set.

The bug can be fixed by either patching the gst_adapter_take_buffer function,
or clearing the buffer flags in gst_qtdemux_decorate_and_push_buffer.

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