static void
gst_segment_clip_init (GstSegmentClip * self, GstSegmentClipClass * g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstPadTemplate *templ;
templ = gst_element_class_get_pad_template (element_class, "sink");
g_assert (templ);
self->sinkpad = gst_pad_new_from_template (templ, "sink");
gst_pad_set_chain_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_segment_clip_sink_chain));
gst_pad_set_event_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_segment_clip_event));
gst_pad_set_query_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_segment_clip_query));
GST_PAD_SET_PROXY_ALLOCATION (self->sinkpad);
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
gst_object_unref (templ);
templ = gst_element_class_get_pad_template (element_class, "src");
g_assert (templ);
self->srcpad = gst_pad_new_from_template (templ, "src");
gst_pad_set_event_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_segment_clip_event));
gst_pad_set_query_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_segment_clip_query));
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
gst_segment_clip_reset (self);
}
static gboolean
gst_segment_clip_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstSegmentClip *self = GST_SEGMENT_CLIP (parent);
gboolean ret = TRUE;
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
/* should be only downstream */
g_assert (pad == self->sinkpad);
gst_event_parse_caps (event, &caps);
ret = gst_segment_clip_sink_setcaps (self, caps);
break;
}
case GST_EVENT_SEGMENT:
{
const GstSegment *segment;
gst_event_parse_segment (event, &segment);
GST_DEBUG_OBJECT (pad, "Got NEWSEGMENT event %" GST_SEGMENT_FORMAT,
segment);
gst_segment_copy_into (segment, &self->segment);
break;
}
case GST_EVENT_FLUSH_STOP:
gst_segment_clip_reset (self);
break;
default:
break;
}
if (ret)
ret = gst_pad_event_default (pad, parent, event);
else
gst_event_unref (event);
return ret;
}
static gboolean
gst_segment_clip_event (GstPad * pad, GstEvent * event)
{
GstSegmentClip *self = GST_SEGMENT_CLIP (gst_pad_get_parent (pad));
GstPad *otherpad;
gboolean ret;
GST_LOG_OBJECT (pad, "Got %s event", GST_EVENT_TYPE_NAME (event));
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
ret = gst_pad_push_event (otherpad, event);
if (ret) {
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:{
GstFormat fmt;
gboolean is_update;
gint64 start, end, base;
gdouble rate;
gst_event_parse_new_segment (event, &is_update, &rate, &fmt, &start,
&end, &base);
GST_DEBUG_OBJECT (pad,
"Got NEWSEGMENT event in %s format, passing on (%"
GST_TIME_FORMAT " - %" GST_TIME_FORMAT ")",
gst_format_get_name (fmt), GST_TIME_ARGS (start),
GST_TIME_ARGS (end));
gst_segment_set_newsegment (&self->segment, is_update, rate, fmt, start,
end, base);
break;
}
case GST_EVENT_FLUSH_STOP:
gst_segment_clip_reset (self);
break;
default:
break;
}
}
gst_object_unref (self);
return ret;
}
static GstStateChangeReturn
gst_segment_clip_change_state (GstElement * element, GstStateChange transition)
{
GstSegmentClip *self = GST_SEGMENT_CLIP (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
if (GST_ELEMENT_CLASS (parent_class)->change_state)
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_segment_clip_reset (self);
break;
default:
break;
}
return ret;
}
