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audiobasesink: Properly handle GAP events

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These are now converted into silence buffers if they have
a duration or cause the ringbuffer and clock to be started
if they don't have a duration.

Fixes bug #685273.
This commit is contained in:
Sebastian Dröge 2012-10-24 11:16:54 +02:00
parent 356579157e
commit b793d0bfae
1 changed files with 32 additions and 0 deletions
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32
gst-libs/gst/audio/gstaudiobasesink.c
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@ -1014,6 +1014,38 @@ gst_audio_base_sink_wait_event (GstBaseSink * bsink, GstEvent * event)
return ret;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_GAP:{
GstClockTime timestamp, duration;
GstAudioRingBufferSpec *spec;
GstBuffer *buffer;
gint n_samples = 0;
GstMapInfo minfo;
spec = &sink->ringbuffer->spec;
gst_event_parse_gap (event, &timestamp, &duration);
if (duration != GST_CLOCK_TIME_NONE) {
n_samples =
gst_util_uint64_scale_ceil (duration, spec->info.rate, GST_SECOND);
buffer = gst_buffer_new_and_alloc (n_samples * spec->info.bpf);
if (n_samples != 0) {
gst_buffer_map (buffer, &minfo, GST_MAP_WRITE);
gst_audio_format_fill_silence (spec->info.finfo, minfo.data,
minfo.size);
gst_buffer_unmap (buffer, &minfo);
}
GST_BUFFER_PTS (buffer) = timestamp;
GST_BUFFER_DURATION (buffer) = duration;
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_GAP);
ret = gst_audio_base_sink_render (bsink, buffer);
gst_buffer_unref (buffer);
} else {
gst_audio_base_sink_drain (sink);
}
break;
}
case GST_EVENT_EOS:
/* now wait till we played everything */
gst_audio_base_sink_drain (sink);