Updation of timestamp and duration

[krupa]

I'm trying to update timestamp and duration of the output buffer in my
decoder(aac decoder) before gst_pad_push. When playing this with alsasink
I'm able to hear audio breaks in between. When I don't update the timestamp
and duration in my decoder, alsasink plays without any audio breaks.

I'm updating duration and timestamp as follows : 
       GST_BUFFER_DURATION (OutBuf) =
            gst_util_uint64_scale_int (samples, GST_SECOND, sample_rate);
       GST_BUFFER_TIMESTAMP (OutBuf) = NextBufTs;

       NextBufTs += GST_BUFFER_DURATION (OutBuf);

And my pipeline is as follows:
gst-launch-0.10  filesrc location=test.m4a !  qtdemux !  my_aacdec !
alsasink

Can I please know the correct way of updating timestamp and duration?



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