static gboolean
gst_output_selector_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
gboolean res = TRUE;
GstOutputSelector *sel;
GstPad *active = NULL;
sel = GST_OUTPUT_SELECTOR (parent);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
switch (sel->pad_negotiation_mode) {
case GST_OUTPUT_SELECTOR_PAD_NEGOTIATION_MODE_ALL:
/* Send caps to all src pads */
res = gst_pad_proxy_query_caps (pad, query);
break;
case GST_OUTPUT_SELECTOR_PAD_NEGOTIATION_MODE_NONE:
res = FALSE;
break;
default:
active = gst_output_selector_get_active (sel);
if (active) {
res = gst_pad_peer_query (active, query);
gst_object_unref (active);
} else {
res = FALSE;
}
break;
}
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
}
static void
gst_output_selector_release_pad (GstElement * element, GstPad * pad)
{
GstOutputSelector *osel;
osel = GST_OUTPUT_SELECTOR (element);
GST_DEBUG_OBJECT (osel, "releasing pad");
/* Disable active pad if it's the to be removed pad */
GST_OBJECT_LOCK (osel);
if (osel->active_srcpad == pad) {
osel->active_srcpad = NULL;
GST_OBJECT_UNLOCK (osel);
g_object_notify (G_OBJECT (osel), "active-pad");
} else {
GST_OBJECT_UNLOCK (osel);
}
gst_pad_set_active (pad, FALSE);
gst_element_remove_pad (GST_ELEMENT_CAST (osel), pad);
}
static gboolean
gst_output_selector_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
gboolean res = TRUE;
GstOutputSelector *sel;
GstPad *active = NULL;
sel = GST_OUTPUT_SELECTOR (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
{
res = gst_output_selector_forward_event (sel, event);
break;
}
case GST_EVENT_SEGMENT:
{
gst_event_copy_segment (event, &sel->segment);
GST_DEBUG_OBJECT (sel, "configured SEGMENT %" GST_SEGMENT_FORMAT,
&sel->segment);
/* fall through */
}
default:
{
active = gst_output_selector_get_active (sel);
if (active) {
res = gst_pad_push_event (active, event);
gst_object_unref (active);
} else {
gst_event_unref (event);
}
break;
}
}
return res;
}
static GstPad *
gst_output_selector_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * name, const GstCaps * caps)
{
gchar *padname;
GstPad *srcpad;
GstOutputSelector *osel;
osel = GST_OUTPUT_SELECTOR (element);
GST_DEBUG_OBJECT (osel, "requesting pad");
GST_OBJECT_LOCK (osel);
padname = g_strdup_printf ("src_%u", osel->nb_srcpads++);
srcpad = gst_pad_new_from_template (templ, padname);
GST_OBJECT_UNLOCK (osel);
gst_pad_set_active (srcpad, TRUE);
/* Forward sticky events to the new srcpad */
gst_pad_sticky_events_foreach (osel->sinkpad, forward_sticky_events, srcpad);
gst_element_add_pad (GST_ELEMENT (osel), srcpad);
/* Set the first requested src pad as active by default */
GST_OBJECT_LOCK (osel);
if (osel->active_srcpad == NULL) {
osel->active_srcpad = srcpad;
GST_OBJECT_UNLOCK (osel);
g_object_notify (G_OBJECT (osel), "active-pad");
} else {
GST_OBJECT_UNLOCK (osel);
}
g_free (padname);
return srcpad;
}
static GstFlowReturn
gst_output_selector_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstFlowReturn res;
GstOutputSelector *osel;
GstClockTime position, duration;
GstPad *active_srcpad;
osel = GST_OUTPUT_SELECTOR (parent);
/*
* The _switch function might push a buffer if 'resend-latest' is true.
*
* Elements/Applications (e.g. camerabin) might use pad probes to
* switch output-selector's active pad. If we simply switch and don't
* recheck any pending pad switch the following codepath could end
* up pushing a buffer on a non-active pad. This is bad.
*
* So we always should check the pending_srcpad before going further down
* the chain and pushing the new buffer
*/
while (osel->pending_srcpad) {
/* Do the switch */
gst_output_selector_switch (osel);
}
active_srcpad = gst_output_selector_get_active (osel);
if (!active_srcpad) {
GST_DEBUG_OBJECT (osel, "No active srcpad");
gst_buffer_unref (buf);
return GST_FLOW_OK;
}
GST_OBJECT_LOCK (osel);
if (osel->latest_buffer) {
gst_buffer_unref (osel->latest_buffer);
osel->latest_buffer = NULL;
}
if (osel->resend_latest) {
/* Keep reference to latest buffer to resend it after switch */
osel->latest_buffer = gst_buffer_ref (buf);
}
GST_OBJECT_UNLOCK (osel);
/* Keep track of last stop and use it in SEGMENT start after
switching to a new src pad */
position = GST_BUFFER_TIMESTAMP (buf);
if (GST_CLOCK_TIME_IS_VALID (position)) {
duration = GST_BUFFER_DURATION (buf);
if (GST_CLOCK_TIME_IS_VALID (duration)) {
position += duration;
}
GST_LOG_OBJECT (osel, "setting last stop %" GST_TIME_FORMAT,
GST_TIME_ARGS (position));
osel->segment.position = position;
}
GST_LOG_OBJECT (osel, "pushing buffer to %" GST_PTR_FORMAT, active_srcpad);
res = gst_pad_push (active_srcpad, buf);
gst_object_unref (active_srcpad);
return res;
}
static gboolean
gst_output_selector_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
gboolean res = TRUE;
GstOutputSelector *sel;
GstPad *active = NULL;
sel = GST_OUTPUT_SELECTOR (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
switch (sel->pad_negotiation_mode) {
case GST_OUTPUT_SELECTOR_PAD_NEGOTIATION_MODE_ALL:
/* Send caps to all src pads */
res = gst_pad_event_default (pad, parent, event);
break;
case GST_OUTPUT_SELECTOR_PAD_NEGOTIATION_MODE_NONE:
gst_event_unref (event);
break;
default:
active = gst_output_selector_get_active (sel);
if (active) {
res = gst_pad_push_event (active, event);
gst_object_unref (active);
} else {
gst_event_unref (event);
}
break;
}
break;
}
case GST_EVENT_SEGMENT:
{
gst_event_copy_segment (event, &sel->segment);
GST_DEBUG_OBJECT (sel, "configured SEGMENT %" GST_SEGMENT_FORMAT,
&sel->segment);
/* Send newsegment to all src pads */
res = gst_pad_event_default (pad, parent, event);
break;
}
case GST_EVENT_EOS:
/* Send eos to all src pads */
res = gst_pad_event_default (pad, parent, event);
break;
default:
{
/* Send other events to pending or active src pad */
active = gst_output_selector_get_active (sel);
if (active) {
res = gst_pad_push_event (active, event);
gst_object_unref (active);
} else {
gst_event_unref (event);
}
break;
}
}
return res;
}
