[Bug 746595] New: omxaacdec requires pulsesink a large 'discont-wait' value

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=746595

            Bug ID: 746595
           Summary: omxaacdec requires pulsesink a large 'discont-wait'
                    value
    Classification: Platform
           Product: GStreamer
           Version: 1.2.0
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-omx
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: jun.ji at lge.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

I found that the below pipeline generates several discontinuities. I believe
this is why there are moments that playing stops occasionally in a very moment.
(but at certain points, I mean the points that it stops are not random but are
fixed)

gst-launch-1.0 filesrc location=/temp/test6_eAACPlus.3gp2 ! qtdemux ! aacparse
! omxaacdec ! pulsesink

Adding discont-wait=18446744073709551614 to the pipeline removes the problem at
this moment.

gst-launch-1.0 filesrc location=/temp/test6_eAACPlus.3gp2 ! qtdemux ! aacparse
! omxaacdec ! pulsesink discont-wait=18446744073709551614

It seems like a synchronization issue but I'm not sure if it's a defect of
omxaacdec as this decoder creates a complete wav file with


gst-launch-1.0 filesrc location=/temp/test6_eAACPlus.3gp2 ! aacparse !
omxaacdec ! audio/x-raw,format=S16LE ! audioconvert ! wavenc ! filesink
location=/temp/test.wav

If I can have any advice, I will try to fix it and share the patch as well.


Thanks
Jun

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