static gboolean
gst_nas_sink_unprepare (GstAudioSink * asink)
{
GstNasSink *sink = GST_NAS_SINK (asink);
if (sink->flow != AuNone) {
AuBool clocked;
int num_elements;
AuStatus status;
AuElement *oldelems;
GST_DEBUG_OBJECT (sink, "flushing buffer");
NAS_flush (sink);
oldelems =
AuGetElements (sink->audio, sink->flow, &clocked, &num_elements,
&status);
if (num_elements > 0) {
GST_DEBUG_OBJECT (sink, "GetElements status: %i", status);
if (oldelems)
AuFreeElements (sink->audio, num_elements, oldelems);
}
AuStopFlow (sink->audio, sink->flow, NULL);
AuReleaseScratchFlow (sink->audio, sink->flow, NULL);
sink->flow = AuNone;
}
sink->need_data = 0;
return TRUE;
}
static void
gst_nas_sink_reset (GstAudioSink * asink)
{
GstNasSink *sink = GST_NAS_SINK (asink);
GST_DEBUG_OBJECT (sink, "reset");
NAS_flush (sink);
}
static guint
gst_nas_sink_write (GstAudioSink * asink, gpointer data, guint length)
{
GstNasSink *nassink = GST_NAS_SINK (asink);
int used = 0;
NAS_flush (nassink);
if (!nassink->mute && nassink->audio != NULL && nassink->flow != AuNone) {
if (nassink->need_data == 0)
return 0;
used = nassink->need_data > length ? length : nassink->need_data;
AuWriteElement (nassink->audio, nassink->flow, 0, used, data, AuFalse,
NULL);
nassink->need_data -= used;
if (used == length)
AuSync (nassink->audio, AuFalse);
} else
used = length;
return used;
}
static gboolean
gst_nas_sink_prepare (GstAudioSink * asink, GstRingBufferSpec * spec)
{
GstNasSink *sink = GST_NAS_SINK (asink);
/*spec->bytes_per_sample = sink->rate * NAS_SOUND_PORT_DURATION; */
/*spec->bytes_per_sample = (spec->width / 8) * spec->channels; */
memset (spec->silence_sample, 0, spec->bytes_per_sample);
GST_DEBUG_OBJECT (sink, "Sample %d", spec->bytes_per_sample);
if (sink->audio == NULL)
return TRUE;
if (sink->flow != AuNone) {
GST_DEBUG_OBJECT (sink, "flushing buffer");
NAS_flush (sink);
AuStopFlow (sink->audio, sink->flow, NULL);
AuReleaseScratchFlow (sink->audio, sink->flow, NULL);
sink->flow = AuNone;
}
return NAS_createFlow (sink, spec);
}
static gboolean
gst_nas_sink_close (GstAudioSink * asink)
{
GstNasSink *sink = GST_NAS_SINK (asink);
if (sink->audio == NULL)
return TRUE;
if (sink->flow != AuNone) {
NAS_flush (sink);
AuStopFlow (sink->audio, sink->flow, NULL);
AuReleaseScratchFlow (sink->audio, sink->flow, NULL);
sink->flow = AuNone;
}
sink->need_data = 0;
AuCloseServer (sink->audio);
sink->audio = NULL;
GST_DEBUG_OBJECT (sink, "closed audio device");
return TRUE;
}
