static gboolean
gst_rtp_pt_demux_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstRtpPtDemux *rtpdemux;
gboolean res = FALSE;
rtpdemux = GST_RTP_PT_DEMUX (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
gst_rtp_pt_demux_clear_pt_map (rtpdemux);
/* don't forward the event, we cleared the ptmap and on the next buffer we
* will add the pt to the caps and push a new caps event */
gst_event_unref (event);
res = TRUE;
break;
}
case GST_EVENT_CUSTOM_DOWNSTREAM:
{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstRTPPacketLost")) {
GstPad *srcpad = find_pad_for_pt (rtpdemux, rtpdemux->last_pt);
if (srcpad) {
res = gst_pad_push_event (srcpad, event);
gst_object_unref (srcpad);
} else {
gst_event_unref (event);
}
} else {
res = gst_pad_event_default (pad, parent, event);
}
break;
}
default:
res = gst_pad_event_default (pad, parent, event);
break;
}
return res;
}
static gboolean
gst_rtp_pt_demux_sink_event (GstPad * pad, GstEvent * event)
{
GstRtpPtDemux *rtpdemux;
gboolean res = FALSE;
rtpdemux = GST_RTP_PT_DEMUX (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_DOWNSTREAM:
{
const GstStructure *s;
s = gst_event_get_structure (event);
if (gst_structure_has_name (s, "GstRTPPacketLost")) {
GstRtpPtDemuxPad *rtpdemuxpad =
find_pad_for_pt (rtpdemux, rtpdemux->last_pt);
if (rtpdemuxpad)
res = gst_pad_push_event (rtpdemuxpad->pad, event);
else
gst_event_unref (event);
} else {
res = gst_pad_event_default (pad, event);
}
break;
}
default:
res = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (rtpdemux);
return res;
}
static GstFlowReturn
gst_rtp_pt_demux_chain (GstPad * pad, GstBuffer * buf)
{
GstFlowReturn ret = GST_FLOW_OK;
GstRtpPtDemux *rtpdemux;
GstElement *element = GST_ELEMENT (GST_OBJECT_PARENT (pad));
guint8 pt;
GstPad *srcpad;
GstRtpPtDemuxPad *rtpdemuxpad;
GstCaps *caps;
rtpdemux = GST_RTP_PT_DEMUX (GST_OBJECT_PARENT (pad));
if (!gst_rtp_buffer_validate (buf))
goto invalid_buffer;
pt = gst_rtp_buffer_get_payload_type (buf);
GST_DEBUG_OBJECT (rtpdemux, "received buffer for pt %d", pt);
rtpdemuxpad = find_pad_for_pt (rtpdemux, pt);
if (rtpdemuxpad == NULL) {
/* new PT, create a src pad */
GstElementClass *klass;
GstPadTemplate *templ;
gchar *padname;
klass = GST_ELEMENT_GET_CLASS (rtpdemux);
templ = gst_element_class_get_pad_template (klass, "src_%d");
padname = g_strdup_printf ("src_%d", pt);
srcpad = gst_pad_new_from_template (templ, padname);
gst_pad_use_fixed_caps (srcpad);
g_free (padname);
caps = gst_rtp_pt_demux_get_caps (rtpdemux, pt);
if (!caps)
goto no_caps;
caps = gst_caps_make_writable (caps);
gst_caps_set_simple (caps, "payload", G_TYPE_INT, pt, NULL);
gst_pad_set_caps (srcpad, caps);
gst_caps_unref (caps);
GST_DEBUG ("Adding pt=%d to the list.", pt);
rtpdemuxpad = g_new0 (GstRtpPtDemuxPad, 1);
rtpdemuxpad->pt = pt;
rtpdemuxpad->newcaps = FALSE;
rtpdemuxpad->pad = srcpad;
GST_OBJECT_LOCK (rtpdemux);
rtpdemux->srcpads = g_slist_append (rtpdemux->srcpads, rtpdemuxpad);
GST_OBJECT_UNLOCK (rtpdemux);
gst_pad_set_active (srcpad, TRUE);
gst_element_add_pad (element, srcpad);
GST_DEBUG ("emitting new-payload-type for pt %d", pt);
g_signal_emit (G_OBJECT (rtpdemux),
gst_rtp_pt_demux_signals[SIGNAL_NEW_PAYLOAD_TYPE], 0, pt, srcpad);
}
srcpad = rtpdemuxpad->pad;
if (pt != rtpdemux->last_pt) {
gint emit_pt = pt;
/* our own signal with an extra flag that this is the only pad */
rtpdemux->last_pt = pt;
GST_DEBUG ("emitting payload-type-changed for pt %d", emit_pt);
g_signal_emit (G_OBJECT (rtpdemux),
gst_rtp_pt_demux_signals[SIGNAL_PAYLOAD_TYPE_CHANGE], 0, emit_pt);
}
if (rtpdemuxpad->newcaps) {
GST_DEBUG ("need new caps");
caps = gst_rtp_pt_demux_get_caps (rtpdemux, pt);
if (!caps)
goto no_caps;
caps = gst_caps_make_writable (caps);
gst_caps_set_simple (caps, "payload", G_TYPE_INT, pt, NULL);
gst_pad_set_caps (srcpad, caps);
gst_caps_unref (caps);
rtpdemuxpad->newcaps = FALSE;
}
gst_buffer_set_caps (buf, GST_PAD_CAPS (srcpad));
/* push to srcpad */
ret = gst_pad_push (srcpad, buf);
return ret;
/* ERRORS */
invalid_buffer:
{
/* this is fatal and should be filtered earlier */
GST_ELEMENT_ERROR (rtpdemux, STREAM, DECODE, (NULL),
("Dropping invalid RTP payload"));
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
no_caps:
{
GST_ELEMENT_ERROR (rtpdemux, STREAM, DECODE, (NULL),
("Could not get caps for payload"));
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_rtp_pt_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstFlowReturn ret = GST_FLOW_OK;
GstRtpPtDemux *rtpdemux;
guint8 pt;
GstPad *srcpad;
GstCaps *caps;
GstRTPBuffer rtp = { NULL };
rtpdemux = GST_RTP_PT_DEMUX (parent);
if (!gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp))
goto invalid_buffer;
pt = gst_rtp_buffer_get_payload_type (&rtp);
gst_rtp_buffer_unmap (&rtp);
GST_DEBUG_OBJECT (rtpdemux, "received buffer for pt %d", pt);
srcpad = find_pad_for_pt (rtpdemux, pt);
if (srcpad == NULL) {
/* new PT, create a src pad */
GstRtpPtDemuxPad *rtpdemuxpad;
GstElementClass *klass;
GstPadTemplate *templ;
gchar *padname;
caps = gst_rtp_pt_demux_get_caps (rtpdemux, pt);
if (!caps)
goto no_caps;
klass = GST_ELEMENT_GET_CLASS (rtpdemux);
templ = gst_element_class_get_pad_template (klass, "src_%u");
padname = g_strdup_printf ("src_%u", pt);
srcpad = gst_pad_new_from_template (templ, padname);
gst_pad_use_fixed_caps (srcpad);
g_free (padname);
gst_pad_set_event_function (srcpad, gst_rtp_pt_demux_src_event);
GST_DEBUG ("Adding pt=%d to the list.", pt);
rtpdemuxpad = g_slice_new0 (GstRtpPtDemuxPad);
rtpdemuxpad->pt = pt;
rtpdemuxpad->newcaps = FALSE;
rtpdemuxpad->pad = srcpad;
gst_object_ref (srcpad);
GST_OBJECT_LOCK (rtpdemux);
rtpdemux->srcpads = g_slist_append (rtpdemux->srcpads, rtpdemuxpad);
GST_OBJECT_UNLOCK (rtpdemux);
gst_pad_set_active (srcpad, TRUE);
/* First push the stream-start event, it must always come first */
gst_pad_push_event (srcpad,
gst_pad_get_sticky_event (rtpdemux->sink, GST_EVENT_STREAM_START, 0));
/* Then caps event is sent */
caps = gst_caps_make_writable (caps);
gst_caps_set_simple (caps, "payload", G_TYPE_INT, pt, NULL);
gst_pad_set_caps (srcpad, caps);
gst_caps_unref (caps);
/* First sticky events on sink pad are forwarded to the new src pad */
gst_pad_sticky_events_foreach (rtpdemux->sink, forward_sticky_events,
srcpad);
gst_element_add_pad (GST_ELEMENT_CAST (rtpdemux), srcpad);
GST_DEBUG ("emitting new-payload-type for pt %d", pt);
g_signal_emit (G_OBJECT (rtpdemux),
gst_rtp_pt_demux_signals[SIGNAL_NEW_PAYLOAD_TYPE], 0, pt, srcpad);
}
if (pt != rtpdemux->last_pt) {
gint emit_pt = pt;
/* our own signal with an extra flag that this is the only pad */
rtpdemux->last_pt = pt;
GST_DEBUG ("emitting payload-type-changed for pt %d", emit_pt);
g_signal_emit (G_OBJECT (rtpdemux),
gst_rtp_pt_demux_signals[SIGNAL_PAYLOAD_TYPE_CHANGE], 0, emit_pt);
}
while (need_caps_for_pt (rtpdemux, pt)) {
GST_DEBUG ("need new caps for %d", pt);
caps = gst_rtp_pt_demux_get_caps (rtpdemux, pt);
if (!caps)
goto no_caps;
clear_newcaps_for_pt (rtpdemux, pt);
caps = gst_caps_make_writable (caps);
gst_caps_set_simple (caps, "payload", G_TYPE_INT, pt, NULL);
gst_pad_set_caps (srcpad, caps);
gst_caps_unref (caps);
}
/* push to srcpad */
ret = gst_pad_push (srcpad, buf);
gst_object_unref (srcpad);
return ret;
/* ERRORS */
invalid_buffer:
{
/* this is fatal and should be filtered earlier */
GST_ELEMENT_ERROR (rtpdemux, STREAM, DECODE, (NULL),
("Dropping invalid RTP payload"));
gst_buffer_unref (buf);
return GST_FLOW_ERROR;
}
no_caps:
{
GST_ELEMENT_ERROR (rtpdemux, STREAM, DECODE, (NULL),
("Could not get caps for payload"));
gst_buffer_unref (buf);
if (srcpad)
gst_object_unref (srcpad);
return GST_FLOW_ERROR;
}
}
