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audioresample: corrected buffer duration calculation to account for nonzero initial timestamp

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Since we calculate timestamps by:

  timestamp = t0 + (out samples) / (out rate)

and durations by:

  duration = ((out samples) + (processed samples)) / (out rate) - timestamp

if t0 is nonzero, this would simplify to

  duration = t0 + (processed samples) / (out rate).

This duration is too large by the amount t0.  We should have done:

  duration = t0 + ((out samples) + (processed samples)) / (out rate) - timestamp

so that

  duration = (processed samples) / (out rate).
This commit is contained in:
Leo Singer 2010-12-17 00:49:26 -08:00 committed by Sebastian Dröge
parent 25a154be5f
commit 5bfe1baab3
1 changed files with 2 additions and 2 deletions

4
gst/audioresample/gstaudioresample.c
View file

@ -889,7 +889,7 @@ gst_audio_resample_push_drain (GstAudioResample * resample, guint history_len)
GST_BUFFER_TIMESTAMP (outbuf) = resample->t0 +
gst_util_uint64_scale_int_round (resample->samples_out, GST_SECOND,
resample->outrate);
GST_BUFFER_DURATION (outbuf) =
GST_BUFFER_DURATION (outbuf) = resample->t0 +
gst_util_uint64_scale_int_round (resample->samples_out + out_processed,
GST_SECOND, resample->outrate) - GST_BUFFER_TIMESTAMP (outbuf);
} else {
@ -1137,7 +1137,7 @@ gst_audio_resample_process (GstAudioResample * resample, GstBuffer * inbuf,
GST_BUFFER_TIMESTAMP (outbuf) = resample->t0 +
gst_util_uint64_scale_int_round (resample->samples_out, GST_SECOND,
resample->outrate);
GST_BUFFER_DURATION (outbuf) =
GST_BUFFER_DURATION (outbuf) = resample->t0 +
gst_util_uint64_scale_int_round (resample->samples_out + out_processed,
GST_SECOND, resample->outrate) - GST_BUFFER_TIMESTAMP (outbuf);
} else {