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oggdemux: reject opus streams with negative start time

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This is used by Vorbis for sample accurate clipping, but this is
deemed an invalid stream by the opus spec.
This commit is contained in:
Vincent Penquerc'h 2012-06-06 17:42:36 +01:00
parent ba967d285a
commit e126073489
1 changed files with 9 additions and 3 deletions
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12
ext/ogg/gstoggdemux.c
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@ -922,10 +922,16 @@ gst_ogg_pad_submit_packet (GstOggPad * pad, ogg_packet * packet)
return GST_FLOW_ERROR;
}
if (granule > pad->map.accumulated_granule)
if (granule >= pad->map.accumulated_granule)
start_granule = granule - pad->map.accumulated_granule;
else
start_granule = 0;
else {
if (pad->map.forbid_start_clamping) {
GST_ERROR_OBJECT (ogg, "Start of stream maps to negative time");
return GST_FLOW_ERROR;
} else {
start_granule = 0;
}
}
pad->start_time = gst_ogg_stream_granule_to_time (&pad->map,
start_granule);