static GstStateChangeReturn
gst_monoscope_change_state (GstElement * element, GstStateChange transition)
{
GstMonoscope *monoscope = GST_MONOSCOPE (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_monoscope_reset (monoscope);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (monoscope->pool) {
gst_buffer_pool_set_active (monoscope->pool, FALSE);
gst_object_replace ((GstObject **) & monoscope->pool, NULL);
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static GstStateChangeReturn
gst_monoscope_change_state (GstElement * element, GstStateChange transition)
{
GstMonoscope *monoscope = GST_MONOSCOPE (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_monoscope_reset (monoscope);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static gboolean
gst_monoscope_sink_event (GstPad * pad, GstEvent * event)
{
GstMonoscope *monoscope;
gboolean res;
monoscope = GST_MONOSCOPE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (monoscope->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_monoscope_reset (monoscope);
res = gst_pad_push_event (monoscope->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time;
gboolean update;
/* the newsegment values are used to clip the input samples
* and to convert the incomming timestamps to running time so
* we can do QoS */
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
/* now configure the values */
gst_segment_set_newsegment_full (&monoscope->segment, update,
rate, arate, format, start, stop, time);
res = gst_pad_push_event (monoscope->srcpad, event);
break;
}
default:
res = gst_pad_push_event (monoscope->srcpad, event);
break;
}
gst_object_unref (monoscope);
return res;
}
static gboolean
gst_monoscope_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstMonoscope *monoscope;
gboolean res;
monoscope = GST_MONOSCOPE (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (monoscope->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_monoscope_reset (monoscope);
res = gst_pad_push_event (monoscope->srcpad, event);
break;
case GST_EVENT_SEGMENT:
{
/* the newsegment values are used to clip the input samples
* and to convert the incomming timestamps to running time so
* we can do QoS */
gst_event_copy_segment (event, &monoscope->segment);
res = gst_pad_push_event (monoscope->srcpad, event);
break;
}
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
gst_monoscope_sink_setcaps (monoscope, caps);
gst_event_unref (event);
res = TRUE;
break;
}
default:
res = gst_pad_push_event (monoscope->srcpad, event);
break;
}
return res;
}