2 * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
21 * SECTION:element-gstrtpbin
22 * @short_description: handle media from one RTP bin
23 * @see_also: gstrtpjitterbuffer, gstrtpsession, gstrtpptdemux, gstrtpssrcdemux
27 * RTP bin combines the functions of gstrtpsession, gstrtpssrcdemux, gstrtpjitterbuffer
28 * and gstrtpptdemux in one element. It allows for multiple RTP sessions that will
29 * be synchronized together using RTCP SR packets.
32 * gstrtpbin is configured with a number of request pads that define the
33 * functionality that is activated, similar to the gstrtpsession element.
36 * To use gstrtpbin as an RTP receiver, request a recv_rtp_sink_%%d pad. The session
37 * number must be specified in the pad name.
38 * Data received on the recv_rtp_sink_%%d pad will be processed in the gstrtpsession
39 * manager and after being validated forwarded on gstrtpssrcdemuxer element. Each
40 * RTP stream is demuxed based on the SSRC and send to a gstrtpjitterbuffer. After
41 * the packets are released from the jitterbuffer, they will be forwarded to a
42 * gstrtpptdemuxer element. The gstrtpptdemuxer element will demux the packets based
43 * on the payload type and will create a unique pad recv_rtp_src_%%d_%%d_%%d on
44 * gstrtpbin with the session number, SSRC and payload type respectively as the pad
48 * To also use gstrtpbin as an RTCP receiver, request a recv_rtcp_sink_%%d pad. The
49 * session number must be specified in the pad name.
52 * If you want the session manager to generate and send RTCP packets, request
53 * the send_rtcp_src_%%d pad with the session number in the pad name. Packet pushed
54 * on this pad contain SR/RR RTCP reports that should be sent to all participants
58 * To use gstrtpbin as a sender, request a send_rtp_sink_%%d pad, which will
59 * automatically create a send_rtp_src_%%d pad. If the session number is not provided,
60 * the pad from the lowest available session will be returned. The session manager will modify the
61 * SSRC in the RTP packets to its own SSRC and wil forward the packets on the
62 * send_rtp_src_%%d pad after updating its internal state.
65 * The session manager needs the clock-rate of the payload types it is handling
66 * and will signal the GstRtpSession::request-pt-map signal when it needs such a
67 * mapping. One can clear the cached values with the GstRtpSession::clear-pt-map
70 * <title>Example pipelines</title>
73 * gst-launch udpsrc port=5000 caps="application/x-rtp, ..." ! .recv_rtp_sink_0 \
74 * gstrtpbin ! rtptheoradepay ! theoradec ! xvimagesink
76 * Receive RTP data from port 5000 and send to the session 0 in gstrtpbin.
80 * gst-launch gstrtpbin name=rtpbin \
81 * v4l2src ! ffmpegcolorspace ! ffenc_h263 ! rtph263ppay ! rtpbin.send_rtp_sink_0 \
82 * rtpbin.send_rtp_src_0 ! udpsink port=5000 \
83 * rtpbin.send_rtcp_src_0 ! udpsink port=5001 sync=false async=false \
84 * udpsrc port=5005 ! rtpbin.recv_rtcp_sink_0 \
85 * audiotestsrc ! amrnbenc ! rtpamrpay ! rtpbin.send_rtp_sink_1 \
86 * rtpbin.send_rtp_src_1 ! udpsink port=5002 \
87 * rtpbin.send_rtcp_src_1 ! udpsink port=5003 sync=false async=false \
88 * udpsrc port=5007 ! rtpbin.recv_rtcp_sink_1
90 * Encode and payload H263 video captured from a v4l2src. Encode and payload AMR
91 * audio generated from audiotestsrc. The video is sent to session 0 in rtpbin
92 * and the audio is sent to session 1. Video packets are sent on UDP port 5000
93 * and audio packets on port 5002. The video RTCP packets for session 0 are sent
94 * on port 5001 and the audio RTCP packets for session 0 are sent on port 5003.
95 * RTCP packets for session 0 are received on port 5005 and RTCP for session 1
96 * is received on port 5007. Since RTCP packets from the sender should be sent
97 * as soon as possible and do not participate in preroll, sync=false and
98 * async=false is configured on udpsink
102 * gst-launch -v gstrtpbin name=rtpbin \
103 * udpsrc caps="application/x-rtp,media=(string)video,clock-rate=(int)90000,encoding-name=(string)H263-1998" \
104 * port=5000 ! rtpbin.recv_rtp_sink_0 \
105 * rtpbin. ! rtph263pdepay ! ffdec_h263 ! xvimagesink \
106 * udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0 \
107 * rtpbin.send_rtcp_src_0 ! udpsink port=5005 sync=false async=false \
108 * udpsrc caps="application/x-rtp,media=(string)audio,clock-rate=(int)8000,encoding-name=(string)AMR,encoding-params=(string)1,octet-align=(string)1" \
109 * port=5002 ! rtpbin.recv_rtp_sink_1 \
110 * rtpbin. ! rtpamrdepay ! amrnbdec ! alsasink \
111 * udpsrc port=5003 ! rtpbin.recv_rtcp_sink_1 \
112 * rtpbin.send_rtcp_src_1 ! udpsink port=5007 sync=false async=false
114 * Receive H263 on port 5000, send it through rtpbin in session 0, depayload,
115 * decode and display the video.
116 * Receive AMR on port 5002, send it through rtpbin in session 1, depayload,
117 * decode and play the audio.
118 * Receive server RTCP packets for session 0 on port 5001 and RTCP packets for
119 * session 1 on port 5003. These packets will be used for session management and
121 * Send RTCP reports for session 0 on port 5005 and RTCP reports for session 1
126 * Last reviewed on 2007-08-30 (0.10.6)
134 #include <gst/rtp/gstrtpbuffer.h>
135 #include <gst/rtp/gstrtcpbuffer.h>
137 #include "gstrtpbin-marshal.h"
138 #include "gstrtpbin.h"
140 GST_DEBUG_CATEGORY_STATIC (gst_rtp_bin_debug);
141 #define GST_CAT_DEFAULT gst_rtp_bin_debug
143 /* elementfactory information */
144 static const GstElementDetails rtpbin_details = GST_ELEMENT_DETAILS ("RTP Bin",
145 "Filter/Network/RTP",
146 "Implement an RTP bin",
147 "Wim Taymans <wim.taymans@gmail.com>");
150 static GstStaticPadTemplate rtpbin_recv_rtp_sink_template =
151 GST_STATIC_PAD_TEMPLATE ("recv_rtp_sink_%d",
154 GST_STATIC_CAPS ("application/x-rtp")
157 static GstStaticPadTemplate rtpbin_recv_rtcp_sink_template =
158 GST_STATIC_PAD_TEMPLATE ("recv_rtcp_sink_%d",
161 GST_STATIC_CAPS ("application/x-rtcp")
164 static GstStaticPadTemplate rtpbin_send_rtp_sink_template =
165 GST_STATIC_PAD_TEMPLATE ("send_rtp_sink_%d",
168 GST_STATIC_CAPS ("application/x-rtp")
172 static GstStaticPadTemplate rtpbin_recv_rtp_src_template =
173 GST_STATIC_PAD_TEMPLATE ("recv_rtp_src_%d_%d_%d",
176 GST_STATIC_CAPS ("application/x-rtp")
179 static GstStaticPadTemplate rtpbin_send_rtcp_src_template =
180 GST_STATIC_PAD_TEMPLATE ("send_rtcp_src_%d",
183 GST_STATIC_CAPS ("application/x-rtcp")
186 static GstStaticPadTemplate rtpbin_send_rtp_src_template =
187 GST_STATIC_PAD_TEMPLATE ("send_rtp_src_%d",
190 GST_STATIC_CAPS ("application/x-rtp")
193 /* padtemplate for the internal pad */
194 static GstStaticPadTemplate rtpbin_sync_sink_template =
195 GST_STATIC_PAD_TEMPLATE ("sink_%d",
198 GST_STATIC_CAPS ("application/x-rtcp")
201 #define GST_RTP_BIN_GET_PRIVATE(obj) \
202 (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_RTP_BIN, GstRtpBinPrivate))
204 #define GST_RTP_BIN_LOCK(bin) g_mutex_lock ((bin)->priv->bin_lock)
205 #define GST_RTP_BIN_UNLOCK(bin) g_mutex_unlock ((bin)->priv->bin_lock)
207 struct _GstRtpBinPrivate
211 GstClockTime ntp_ns_base;
214 /* signals and args */
217 SIGNAL_REQUEST_PT_MAP,
221 SIGNAL_ON_SSRC_COLLISION,
222 SIGNAL_ON_SSRC_VALIDATED,
223 SIGNAL_ON_SSRC_ACTIVE,
226 SIGNAL_ON_BYE_TIMEOUT,
231 #define DEFAULT_LATENCY_MS 200
232 #define DEFAULT_SDES_CNAME NULL
233 #define DEFAULT_SDES_NAME NULL
234 #define DEFAULT_SDES_EMAIL NULL
235 #define DEFAULT_SDES_PHONE NULL
236 #define DEFAULT_SDES_LOCATION NULL
237 #define DEFAULT_SDES_TOOL NULL
238 #define DEFAULT_SDES_NOTE NULL
255 typedef struct _GstRtpBinSession GstRtpBinSession;
256 typedef struct _GstRtpBinStream GstRtpBinStream;
257 typedef struct _GstRtpBinClient GstRtpBinClient;
259 static guint gst_rtp_bin_signals[LAST_SIGNAL] = { 0 };
261 static GstCaps *pt_map_requested (GstElement * element, guint pt,
262 GstRtpBinSession * session);
263 static const gchar *sdes_type_to_name (GstRTCPSDESType type);
264 static void gst_rtp_bin_set_sdes_string (GstRtpBin * bin,
265 GstRTCPSDESType type, const gchar * data);
267 static void free_stream (GstRtpBinStream * stream);
269 /* Manages the RTP stream for one SSRC.
271 * We pipe the stream (comming from the SSRC demuxer) into a jitterbuffer.
272 * If we see an SDES RTCP packet that links multiple SSRCs together based on a
273 * common CNAME, we create a GstRtpBinClient structure to group the SSRCs
274 * together (see below).
276 struct _GstRtpBinStream
278 /* the SSRC of this stream */
284 /* the session this SSRC belongs to */
285 GstRtpBinSession *session;
287 /* the jitterbuffer of the SSRC */
290 /* the PT demuxer of the SSRC */
292 gulong demux_newpad_sig;
293 gulong demux_ptreq_sig;
294 gulong demux_pt_change_sig;
296 /* the internal pad we use to get RTCP sync messages */
300 guint64 last_extrtptime;
302 /* mapping to local RTP and NTP time */
309 guint64 clock_base_time;
312 gint64 prev_ts_offset;
316 #define GST_RTP_SESSION_LOCK(sess) g_mutex_lock ((sess)->lock)
317 #define GST_RTP_SESSION_UNLOCK(sess) g_mutex_unlock ((sess)->lock)
319 /* Manages the receiving end of the packets.
321 * There is one such structure for each RTP session (audio/video/...).
322 * We get the RTP/RTCP packets and stuff them into the session manager. From
323 * there they are pushed into an SSRC demuxer that splits the stream based on
324 * SSRC. Each of the SSRC streams go into their own jitterbuffer (managed with
325 * the GstRtpBinStream above).
327 struct _GstRtpBinSession
333 /* the session element */
335 /* the SSRC demuxer */
337 gulong demux_newpad_sig;
341 /* list of GstRtpBinStream */
344 /* mapping of payload type to caps */
347 /* the pads of the session */
348 GstPad *recv_rtp_sink;
349 GstPad *recv_rtp_src;
350 GstPad *recv_rtcp_sink;
352 GstPad *send_rtp_sink;
353 GstPad *send_rtp_src;
354 GstPad *send_rtcp_src;
357 /* Manages the RTP streams that come from one client and should therefore be
360 struct _GstRtpBinClient
362 /* the common CNAME for the streams */
373 /* find a session with the given id. Must be called with RTP_BIN_LOCK */
374 static GstRtpBinSession *
375 find_session_by_id (GstRtpBin * rtpbin, gint id)
379 for (walk = rtpbin->sessions; walk; walk = g_slist_next (walk)) {
380 GstRtpBinSession *sess = (GstRtpBinSession *) walk->data;
389 on_new_ssrc (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
391 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_NEW_SSRC], 0,
396 on_ssrc_collision (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
398 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_SSRC_COLLISION], 0,
403 on_ssrc_validated (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
405 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_SSRC_VALIDATED], 0,
410 on_ssrc_active (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
412 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_SSRC_ACTIVE], 0,
417 on_ssrc_sdes (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
419 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_SSRC_SDES], 0,
424 on_bye_ssrc (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
426 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_BYE_SSRC], 0,
431 on_bye_timeout (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
433 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_BYE_TIMEOUT], 0,
438 on_timeout (GstElement * session, guint32 ssrc, GstRtpBinSession * sess)
440 g_signal_emit (sess->bin, gst_rtp_bin_signals[SIGNAL_ON_TIMEOUT], 0,
444 /* create a session with the given id. Must be called with RTP_BIN_LOCK */
445 static GstRtpBinSession *
446 create_session (GstRtpBin * rtpbin, gint id)
448 GstRtpBinSession *sess;
449 GstElement *session, *demux;
452 if (!(session = gst_element_factory_make ("gstrtpsession", NULL)))
455 if (!(demux = gst_element_factory_make ("gstrtpssrcdemux", NULL)))
458 sess = g_new0 (GstRtpBinSession, 1);
459 sess->lock = g_mutex_new ();
462 sess->session = session;
464 sess->ptmap = g_hash_table_new_full (NULL, NULL, NULL,
465 (GDestroyNotify) gst_caps_unref);
466 rtpbin->sessions = g_slist_prepend (rtpbin->sessions, sess);
468 /* set NTP base or new session */
469 g_object_set (session, "ntp-ns-base", rtpbin->priv->ntp_ns_base, NULL);
470 /* configure SDES items */
471 GST_OBJECT_LOCK (rtpbin);
472 for (i = GST_RTCP_SDES_CNAME; i < GST_RTCP_SDES_PRIV; i++) {
473 g_object_set (session, sdes_type_to_name (i), rtpbin->sdes[i], NULL);
475 GST_OBJECT_UNLOCK (rtpbin);
477 /* provide clock_rate to the session manager when needed */
478 g_signal_connect (session, "request-pt-map",
479 (GCallback) pt_map_requested, sess);
481 g_signal_connect (sess->session, "on-new-ssrc",
482 (GCallback) on_new_ssrc, sess);
483 g_signal_connect (sess->session, "on-ssrc-collision",
484 (GCallback) on_ssrc_collision, sess);
485 g_signal_connect (sess->session, "on-ssrc-validated",
486 (GCallback) on_ssrc_validated, sess);
487 g_signal_connect (sess->session, "on-ssrc-active",
488 (GCallback) on_ssrc_active, sess);
489 g_signal_connect (sess->session, "on-ssrc-sdes",
490 (GCallback) on_ssrc_sdes, sess);
491 g_signal_connect (sess->session, "on-bye-ssrc",
492 (GCallback) on_bye_ssrc, sess);
493 g_signal_connect (sess->session, "on-bye-timeout",
494 (GCallback) on_bye_timeout, sess);
495 g_signal_connect (sess->session, "on-timeout", (GCallback) on_timeout, sess);
497 /* FIXME, change state only to what's needed */
498 gst_bin_add (GST_BIN_CAST (rtpbin), session);
499 gst_element_set_state (session, GST_STATE_PLAYING);
500 gst_bin_add (GST_BIN_CAST (rtpbin), demux);
501 gst_element_set_state (demux, GST_STATE_PLAYING);
508 g_warning ("gstrtpbin: could not create gstrtpsession element");
513 gst_object_unref (session);
514 g_warning ("gstrtpbin: could not create gstrtpssrcdemux element");
520 free_session (GstRtpBinSession * sess)
526 gst_element_set_state (sess->session, GST_STATE_NULL);
527 gst_element_set_state (sess->demux, GST_STATE_NULL);
529 if (sess->recv_rtp_sink != NULL)
530 gst_element_release_request_pad (sess->session, sess->recv_rtp_sink);
531 if (sess->recv_rtp_src != NULL)
532 gst_object_unref (sess->recv_rtp_src);
533 if (sess->recv_rtcp_sink != NULL)
534 gst_element_release_request_pad (sess->session, sess->recv_rtcp_sink);
535 if (sess->sync_src != NULL)
536 gst_object_unref (sess->sync_src);
537 if (sess->send_rtp_sink != NULL)
538 gst_element_release_request_pad (sess->session, sess->send_rtp_sink);
539 if (sess->send_rtp_src != NULL)
540 gst_object_unref (sess->send_rtp_src);
541 if (sess->send_rtcp_src != NULL)
542 gst_element_release_request_pad (sess->session, sess->send_rtcp_src);
544 gst_bin_remove (GST_BIN_CAST (bin), sess->session);
545 gst_bin_remove (GST_BIN_CAST (bin), sess->demux);
547 g_slist_foreach (sess->streams, (GFunc) free_stream, NULL);
548 g_slist_free (sess->streams);
550 g_mutex_free (sess->lock);
551 g_hash_table_destroy (sess->ptmap);
553 bin->sessions = g_slist_remove (bin->sessions, sess);
559 static GstRtpBinStream *
560 find_stream_by_ssrc (GstRtpBinSession * session, guint32 ssrc)
564 for (walk = session->streams; walk; walk = g_slist_next (walk)) {
565 GstRtpBinStream *stream = (GstRtpBinStream *) walk->data;
567 if (stream->ssrc == ssrc)
574 /* get the payload type caps for the specific payload @pt in @session */
576 get_pt_map (GstRtpBinSession * session, guint pt)
578 GstCaps *caps = NULL;
581 GValue args[3] = { {0}, {0}, {0} };
583 GST_DEBUG ("searching pt %d in cache", pt);
585 GST_RTP_SESSION_LOCK (session);
587 /* first look in the cache */
588 caps = g_hash_table_lookup (session->ptmap, GINT_TO_POINTER (pt));
596 GST_DEBUG ("emiting signal for pt %d in session %d", pt, session->id);
598 /* not in cache, send signal to request caps */
599 g_value_init (&args[0], GST_TYPE_ELEMENT);
600 g_value_set_object (&args[0], bin);
601 g_value_init (&args[1], G_TYPE_UINT);
602 g_value_set_uint (&args[1], session->id);
603 g_value_init (&args[2], G_TYPE_UINT);
604 g_value_set_uint (&args[2], pt);
606 g_value_init (&ret, GST_TYPE_CAPS);
607 g_value_set_boxed (&ret, NULL);
609 g_signal_emitv (args, gst_rtp_bin_signals[SIGNAL_REQUEST_PT_MAP], 0, &ret);
611 g_value_unset (&args[0]);
612 g_value_unset (&args[1]);
613 g_value_unset (&args[2]);
614 caps = (GstCaps *) g_value_dup_boxed (&ret);
615 g_value_unset (&ret);
619 GST_DEBUG ("caching pt %d as %" GST_PTR_FORMAT, pt, caps);
621 /* store in cache, take additional ref */
622 g_hash_table_insert (session->ptmap, GINT_TO_POINTER (pt),
623 gst_caps_ref (caps));
626 GST_RTP_SESSION_UNLOCK (session);
633 GST_RTP_SESSION_UNLOCK (session);
634 GST_DEBUG ("no pt map could be obtained");
640 return_true (gpointer key, gpointer value, gpointer user_data)
646 gst_rtp_bin_clear_pt_map (GstRtpBin * bin)
648 GSList *sessions, *streams;
650 GST_RTP_BIN_LOCK (bin);
651 GST_DEBUG_OBJECT (bin, "clearing pt map");
652 for (sessions = bin->sessions; sessions; sessions = g_slist_next (sessions)) {
653 GstRtpBinSession *session = (GstRtpBinSession *) sessions->data;
655 GST_DEBUG_OBJECT (bin, "clearing session %p", session);
656 g_signal_emit_by_name (session->session, "clear-pt-map", NULL);
658 GST_RTP_SESSION_LOCK (session);
659 g_hash_table_foreach_remove (session->ptmap, return_true, NULL);
661 for (streams = session->streams; streams; streams = g_slist_next (streams)) {
662 GstRtpBinStream *stream = (GstRtpBinStream *) streams->data;
664 GST_DEBUG_OBJECT (bin, "clearing stream %p", stream);
665 g_signal_emit_by_name (stream->buffer, "clear-pt-map", NULL);
666 g_signal_emit_by_name (stream->demux, "clear-pt-map", NULL);
668 GST_RTP_SESSION_UNLOCK (session);
670 GST_RTP_BIN_UNLOCK (bin);
673 /* get a client with the given SDES name. Must be called with RTP_BIN_LOCK */
674 static GstRtpBinClient *
675 get_client (GstRtpBin * bin, guint8 len, guint8 * data, gboolean * created)
677 GstRtpBinClient *result = NULL;
680 for (walk = bin->clients; walk; walk = g_slist_next (walk)) {
681 GstRtpBinClient *client = (GstRtpBinClient *) walk->data;
683 if (len != client->cname_len)
686 if (!strncmp ((gchar *) data, client->cname, client->cname_len)) {
687 GST_DEBUG_OBJECT (bin, "found existing client %p with CNAME %s", client,
694 /* nothing found, create one */
695 if (result == NULL) {
696 result = g_new0 (GstRtpBinClient, 1);
697 result->cname = g_strndup ((gchar *) data, len);
698 result->cname_len = len;
699 result->min_delta = G_MAXINT64;
700 bin->clients = g_slist_prepend (bin->clients, result);
701 GST_DEBUG_OBJECT (bin, "created new client %p with CNAME %s", result,
708 free_client (GstRtpBinClient * client)
710 g_slist_free (client->streams);
711 g_free (client->cname);
715 /* associate a stream to the given CNAME. This will make sure all streams for
716 * that CNAME are synchronized together. */
718 gst_rtp_bin_associate (GstRtpBin * bin, GstRtpBinStream * stream, guint8 len,
721 GstRtpBinClient *client;
725 /* first find or create the CNAME */
726 GST_RTP_BIN_LOCK (bin);
727 client = get_client (bin, len, data, &created);
729 /* find stream in the client */
730 for (walk = client->streams; walk; walk = g_slist_next (walk)) {
731 GstRtpBinStream *ostream = (GstRtpBinStream *) walk->data;
733 if (ostream == stream)
736 /* not found, add it to the list */
738 GST_DEBUG_OBJECT (bin,
739 "new association of SSRC %08x with client %p with CNAME %s",
740 stream->ssrc, client, client->cname);
741 client->streams = g_slist_prepend (client->streams, stream);
744 GST_DEBUG_OBJECT (bin,
745 "found association of SSRC %08x with client %p with CNAME %s",
746 stream->ssrc, client, client->cname);
749 /* we can only continue if we know the local clock-base and clock-rate */
750 if (stream->clock_base == -1)
753 if (stream->clock_rate <= 0) {
755 GstCaps *caps = NULL;
756 GstStructure *s = NULL;
758 GST_RTP_SESSION_LOCK (stream->session);
759 pt = stream->last_pt;
760 GST_RTP_SESSION_UNLOCK (stream->session);
765 caps = get_pt_map (stream->session, pt);
769 s = gst_caps_get_structure (caps, 0);
770 gst_structure_get_int (s, "clock-rate", &stream->clock_rate);
771 gst_caps_unref (caps);
773 if (stream->clock_rate <= 0)
777 /* map last RTP time to local timeline using our clock-base */
778 stream->local_rtp = stream->last_extrtptime - stream->clock_base;
780 GST_DEBUG_OBJECT (bin,
781 "base %" G_GUINT64_FORMAT ", extrtptime %" G_GUINT64_FORMAT
782 ", local RTP %" G_GUINT64_FORMAT ", clock-rate %d", stream->clock_base,
783 stream->last_extrtptime, stream->local_rtp, stream->clock_rate);
785 /* calculate local NTP time in gstreamer timestamp */
787 gst_util_uint64_scale_int (stream->local_rtp, GST_SECOND,
789 stream->local_unix += stream->clock_base_time;
790 /* calculate delta between server and receiver */
791 stream->unix_delta = stream->last_unix - stream->local_unix;
793 GST_DEBUG_OBJECT (bin,
794 "local UNIX %" G_GUINT64_FORMAT ", remote UNIX %" G_GUINT64_FORMAT
795 ", delta %" G_GINT64_FORMAT, stream->local_unix, stream->last_unix,
798 /* recalc inter stream playout offset, but only if there are more than one
800 if (client->nstreams > 1) {
803 /* calculate the min of all deltas */
805 for (walk = client->streams; walk; walk = g_slist_next (walk)) {
806 GstRtpBinStream *ostream = (GstRtpBinStream *) walk->data;
808 if (ostream->unix_delta && ostream->unix_delta < min)
809 min = ostream->unix_delta;
812 GST_DEBUG_OBJECT (bin, "client %p min delta %" G_GINT64_FORMAT, client,
815 /* calculate offsets for each stream */
816 for (walk = client->streams; walk; walk = g_slist_next (walk)) {
817 GstRtpBinStream *ostream = (GstRtpBinStream *) walk->data;
819 if (ostream->unix_delta == 0)
822 ostream->ts_offset = ostream->unix_delta - min;
824 /* delta changed, see how much */
825 if (ostream->prev_ts_offset != ostream->ts_offset) {
828 if (ostream->prev_ts_offset > ostream->ts_offset)
829 diff = ostream->prev_ts_offset - ostream->ts_offset;
831 diff = ostream->ts_offset - ostream->prev_ts_offset;
833 /* only change diff when it changed more than 1 millisecond. This
834 * compensates for rounding errors in NTP to RTP timestamp
836 if (diff > GST_MSECOND)
837 g_object_set (ostream->buffer, "ts-offset", ostream->ts_offset, NULL);
839 ostream->prev_ts_offset = ostream->ts_offset;
841 GST_DEBUG_OBJECT (bin, "stream SSRC %08x, delta %" G_GINT64_FORMAT,
842 ostream->ssrc, ostream->ts_offset);
845 GST_RTP_BIN_UNLOCK (bin);
850 GST_WARNING_OBJECT (bin, "we have no clock-base");
851 GST_RTP_BIN_UNLOCK (bin);
856 GST_WARNING_OBJECT (bin, "we have no clock-rate");
857 GST_RTP_BIN_UNLOCK (bin);
862 #define GST_RTCP_BUFFER_FOR_PACKETS(b,buffer,packet) \
863 for ((b) = gst_rtcp_buffer_get_first_packet ((buffer), (packet)); (b); \
864 (b) = gst_rtcp_packet_move_to_next ((packet)))
866 #define GST_RTCP_SDES_FOR_ITEMS(b,packet) \
867 for ((b) = gst_rtcp_packet_sdes_first_item ((packet)); (b); \
868 (b) = gst_rtcp_packet_sdes_next_item ((packet)))
870 #define GST_RTCP_SDES_FOR_ENTRIES(b,packet) \
871 for ((b) = gst_rtcp_packet_sdes_first_entry ((packet)); (b); \
872 (b) = gst_rtcp_packet_sdes_next_entry ((packet)))
875 gst_rtp_bin_sync_chain (GstPad * pad, GstBuffer * buffer)
877 GstFlowReturn ret = GST_FLOW_OK;
878 GstRtpBinStream *stream;
880 GstRTCPPacket packet;
884 gboolean have_sr, have_sdes;
887 stream = gst_pad_get_element_private (pad);
890 GST_DEBUG_OBJECT (bin, "received sync packet");
892 if (!gst_rtcp_buffer_validate (buffer))
897 GST_RTCP_BUFFER_FOR_PACKETS (more, buffer, &packet) {
898 /* first packet must be SR or RR or else the validate would have failed */
899 switch (gst_rtcp_packet_get_type (&packet)) {
900 case GST_RTCP_TYPE_SR:
901 /* only parse first. There is only supposed to be one SR in the packet
902 * but we will deal with malformed packets gracefully */
905 /* get NTP and RTP times */
906 gst_rtcp_packet_sr_get_sender_info (&packet, &ssrc, &ntptime, &rtptime,
909 GST_DEBUG_OBJECT (bin, "received sync packet from SSRC %08x", ssrc);
910 /* ignore SR that is not ours */
911 if (ssrc != stream->ssrc)
916 /* store values in the stream */
917 stream->have_sync = TRUE;
918 stream->last_unix = gst_rtcp_ntp_to_unix (ntptime);
919 /* use extended timestamp */
920 gst_rtp_buffer_ext_timestamp (&stream->last_extrtptime, rtptime);
922 case GST_RTCP_TYPE_SDES:
924 gboolean more_items, more_entries;
926 /* only deal with first SDES, there is only supposed to be one SDES in
927 * the RTCP packet but we deal with bad packets gracefully. Also bail
928 * out if we have not seen an SR item yet. */
929 if (have_sdes || !have_sr)
932 GST_RTCP_SDES_FOR_ITEMS (more_items, &packet) {
933 /* skip items that are not about the SSRC of the sender */
934 if (gst_rtcp_packet_sdes_get_ssrc (&packet) != ssrc)
937 /* find the CNAME entry */
938 GST_RTCP_SDES_FOR_ENTRIES (more_entries, &packet) {
939 GstRTCPSDESType type;
943 gst_rtcp_packet_sdes_get_entry (&packet, &type, &len, &data);
945 if (type == GST_RTCP_SDES_CNAME) {
946 stream->clock_base = GST_BUFFER_OFFSET (buffer);
947 stream->clock_base_time = GST_BUFFER_OFFSET_END (buffer);
948 /* associate the stream to CNAME */
949 gst_rtp_bin_associate (bin, stream, len, data);
957 /* we can ignore these packets */
962 gst_buffer_unref (buffer);
969 /* this is fatal and should be filtered earlier */
970 GST_ELEMENT_ERROR (bin, STREAM, DECODE, (NULL),
971 ("invalid RTCP packet received"));
972 gst_buffer_unref (buffer);
973 return GST_FLOW_ERROR;
977 /* create a new stream with @ssrc in @session. Must be called with
978 * RTP_SESSION_LOCK. */
979 static GstRtpBinStream *
980 create_stream (GstRtpBinSession * session, guint32 ssrc)
982 GstElement *buffer, *demux;
983 GstRtpBinStream *stream;
984 GstPadTemplate *templ;
987 if (!(buffer = gst_element_factory_make ("gstrtpjitterbuffer", NULL)))
988 goto no_jitterbuffer;
990 if (!(demux = gst_element_factory_make ("gstrtpptdemux", NULL)))
993 stream = g_new0 (GstRtpBinStream, 1);
995 stream->bin = session->bin;
996 stream->session = session;
997 stream->buffer = buffer;
998 stream->demux = demux;
999 stream->last_extrtptime = -1;
1000 stream->last_pt = -1;
1001 stream->have_sync = FALSE;
1002 session->streams = g_slist_prepend (session->streams, stream);
1004 /* make an internal sinkpad for RTCP sync packets. Take ownership of the
1005 * pad. We will link this pad later. */
1006 padname = g_strdup_printf ("sync_%d", ssrc);
1007 templ = gst_static_pad_template_get (&rtpbin_sync_sink_template);
1008 stream->sync_pad = gst_pad_new_from_template (templ, padname);
1009 gst_object_unref (templ);
1011 gst_object_ref (stream->sync_pad);
1012 gst_object_sink (stream->sync_pad);
1013 gst_pad_set_element_private (stream->sync_pad, stream);
1014 gst_pad_set_chain_function (stream->sync_pad, gst_rtp_bin_sync_chain);
1015 gst_pad_set_active (stream->sync_pad, TRUE);
1017 /* provide clock_rate to the jitterbuffer when needed */
1018 g_signal_connect (buffer, "request-pt-map",
1019 (GCallback) pt_map_requested, session);
1021 /* configure latency */
1022 g_object_set (buffer, "latency", session->bin->latency, NULL);
1024 gst_bin_add (GST_BIN_CAST (session->bin), buffer);
1025 gst_element_set_state (buffer, GST_STATE_PLAYING);
1026 gst_bin_add (GST_BIN_CAST (session->bin), demux);
1027 gst_element_set_state (demux, GST_STATE_PLAYING);
1030 gst_element_link (buffer, demux);
1037 g_warning ("gstrtpbin: could not create gstrtpjitterbuffer element");
1042 gst_object_unref (buffer);
1043 g_warning ("gstrtpbin: could not create gstrtpptdemux element");
1049 free_stream (GstRtpBinStream * stream)
1051 GstRtpBinSession *session;
1053 session = stream->session;
1055 gst_element_set_state (stream->buffer, GST_STATE_NULL);
1056 gst_element_set_state (stream->demux, GST_STATE_NULL);
1058 gst_bin_remove (GST_BIN_CAST (session->bin), stream->buffer);
1059 gst_bin_remove (GST_BIN_CAST (session->bin), stream->demux);
1061 gst_object_unref (stream->sync_pad);
1063 session->streams = g_slist_remove (session->streams, stream);
1068 /* GObject vmethods */
1069 static void gst_rtp_bin_dispose (GObject * object);
1070 static void gst_rtp_bin_finalize (GObject * object);
1071 static void gst_rtp_bin_set_property (GObject * object, guint prop_id,
1072 const GValue * value, GParamSpec * pspec);
1073 static void gst_rtp_bin_get_property (GObject * object, guint prop_id,
1074 GValue * value, GParamSpec * pspec);
1076 /* GstElement vmethods */
1077 static GstClock *gst_rtp_bin_provide_clock (GstElement * element);
1078 static GstStateChangeReturn gst_rtp_bin_change_state (GstElement * element,
1079 GstStateChange transition);
1080 static GstPad *gst_rtp_bin_request_new_pad (GstElement * element,
1081 GstPadTemplate * templ, const gchar * name);
1082 static void gst_rtp_bin_release_pad (GstElement * element, GstPad * pad);
1083 static void gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message);
1084 static void gst_rtp_bin_clear_pt_map (GstRtpBin * bin);
1086 GST_BOILERPLATE (GstRtpBin, gst_rtp_bin, GstBin, GST_TYPE_BIN);
1089 gst_rtp_bin_base_init (gpointer klass)
1091 GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
1094 gst_element_class_add_pad_template (element_class,
1095 gst_static_pad_template_get (&rtpbin_recv_rtp_sink_template));
1096 gst_element_class_add_pad_template (element_class,
1097 gst_static_pad_template_get (&rtpbin_recv_rtcp_sink_template));
1098 gst_element_class_add_pad_template (element_class,
1099 gst_static_pad_template_get (&rtpbin_send_rtp_sink_template));
1102 gst_element_class_add_pad_template (element_class,
1103 gst_static_pad_template_get (&rtpbin_recv_rtp_src_template));
1104 gst_element_class_add_pad_template (element_class,
1105 gst_static_pad_template_get (&rtpbin_send_rtcp_src_template));
1106 gst_element_class_add_pad_template (element_class,
1107 gst_static_pad_template_get (&rtpbin_send_rtp_src_template));
1109 gst_element_class_set_details (element_class, &rtpbin_details);
1113 gst_rtp_bin_class_init (GstRtpBinClass * klass)
1115 GObjectClass *gobject_class;
1116 GstElementClass *gstelement_class;
1117 GstBinClass *gstbin_class;
1119 gobject_class = (GObjectClass *) klass;
1120 gstelement_class = (GstElementClass *) klass;
1121 gstbin_class = (GstBinClass *) klass;
1123 g_type_class_add_private (klass, sizeof (GstRtpBinPrivate));
1125 gobject_class->dispose = gst_rtp_bin_dispose;
1126 gobject_class->finalize = gst_rtp_bin_finalize;
1127 gobject_class->set_property = gst_rtp_bin_set_property;
1128 gobject_class->get_property = gst_rtp_bin_get_property;
1130 g_object_class_install_property (gobject_class, PROP_LATENCY,
1131 g_param_spec_uint ("latency", "Buffer latency in ms",
1132 "Default amount of ms to buffer in the jitterbuffers", 0,
1133 G_MAXUINT, DEFAULT_LATENCY_MS, G_PARAM_READWRITE));
1136 * GstRtpBin::request-pt-map:
1137 * @rtpbin: the object which received the signal
1138 * @session: the session
1141 * Request the payload type as #GstCaps for @pt in @session.
1143 gst_rtp_bin_signals[SIGNAL_REQUEST_PT_MAP] =
1144 g_signal_new ("request-pt-map", G_TYPE_FROM_CLASS (klass),
1145 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, request_pt_map),
1146 NULL, NULL, gst_rtp_bin_marshal_BOXED__UINT_UINT, GST_TYPE_CAPS, 2,
1147 G_TYPE_UINT, G_TYPE_UINT);
1149 * GstRtpBin::clear-pt-map:
1150 * @rtpbin: the object which received the signal
1152 * Clear all previously cached pt-mapping obtained with
1153 * GstRtpBin::request-pt-map.
1155 gst_rtp_bin_signals[SIGNAL_CLEAR_PT_MAP] =
1156 g_signal_new ("clear-pt-map", G_TYPE_FROM_CLASS (klass),
1157 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
1158 clear_pt_map), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE,
1162 * GstRtpBin::on-new-ssrc:
1163 * @rtpbin: the object which received the signal
1164 * @session: the session
1167 * Notify of a new SSRC that entered @session.
1169 gst_rtp_bin_signals[SIGNAL_ON_NEW_SSRC] =
1170 g_signal_new ("on-new-ssrc", G_TYPE_FROM_CLASS (klass),
1171 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_new_ssrc),
1172 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1173 G_TYPE_UINT, G_TYPE_UINT);
1175 * GstRtpBin::on-ssrc-collision:
1176 * @rtpbin: the object which received the signal
1177 * @session: the session
1180 * Notify when we have an SSRC collision
1182 gst_rtp_bin_signals[SIGNAL_ON_SSRC_COLLISION] =
1183 g_signal_new ("on-ssrc-collision", G_TYPE_FROM_CLASS (klass),
1184 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_collision),
1185 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1186 G_TYPE_UINT, G_TYPE_UINT);
1188 * GstRtpBin::on-ssrc-validated:
1189 * @rtpbin: the object which received the signal
1190 * @session: the session
1193 * Notify of a new SSRC that became validated.
1195 gst_rtp_bin_signals[SIGNAL_ON_SSRC_VALIDATED] =
1196 g_signal_new ("on-ssrc-validated", G_TYPE_FROM_CLASS (klass),
1197 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_validated),
1198 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1199 G_TYPE_UINT, G_TYPE_UINT);
1201 * GstRtpBin::on-ssrc-active:
1202 * @rtpbin: the object which received the signal
1203 * @session: the session
1206 * Notify of a SSRC that is active, i.e., sending RTCP.
1208 gst_rtp_bin_signals[SIGNAL_ON_SSRC_ACTIVE] =
1209 g_signal_new ("on-ssrc-active", G_TYPE_FROM_CLASS (klass),
1210 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_active),
1211 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1212 G_TYPE_UINT, G_TYPE_UINT);
1214 * GstRtpBin::on-ssrc-sdes:
1215 * @rtpbin: the object which received the signal
1216 * @session: the session
1219 * Notify of a SSRC that is active, i.e., sending RTCP.
1221 gst_rtp_bin_signals[SIGNAL_ON_SSRC_SDES] =
1222 g_signal_new ("on-ssrc-sdes", G_TYPE_FROM_CLASS (klass),
1223 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_sdes),
1224 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1225 G_TYPE_UINT, G_TYPE_UINT);
1228 * GstRtpBin::on-bye-ssrc:
1229 * @rtpbin: the object which received the signal
1230 * @session: the session
1233 * Notify of an SSRC that became inactive because of a BYE packet.
1235 gst_rtp_bin_signals[SIGNAL_ON_BYE_SSRC] =
1236 g_signal_new ("on-bye-ssrc", G_TYPE_FROM_CLASS (klass),
1237 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_bye_ssrc),
1238 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1239 G_TYPE_UINT, G_TYPE_UINT);
1241 * GstRtpBin::on-bye-timeout:
1242 * @rtpbin: the object which received the signal
1243 * @session: the session
1246 * Notify of an SSRC that has timed out because of BYE
1248 gst_rtp_bin_signals[SIGNAL_ON_BYE_TIMEOUT] =
1249 g_signal_new ("on-bye-timeout", G_TYPE_FROM_CLASS (klass),
1250 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_bye_timeout),
1251 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1252 G_TYPE_UINT, G_TYPE_UINT);
1254 * GstRtpBin::on-timeout:
1255 * @rtpbin: the object which received the signal
1256 * @session: the session
1259 * Notify of an SSRC that has timed out
1261 gst_rtp_bin_signals[SIGNAL_ON_TIMEOUT] =
1262 g_signal_new ("on-timeout", G_TYPE_FROM_CLASS (klass),
1263 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_timeout),
1264 NULL, NULL, gst_rtp_bin_marshal_VOID__UINT_UINT, G_TYPE_NONE, 2,
1265 G_TYPE_UINT, G_TYPE_UINT);
1267 g_object_class_install_property (gobject_class, PROP_SDES_CNAME,
1268 g_param_spec_string ("sdes-cname", "SDES CNAME",
1269 "The CNAME to put in SDES messages of this session",
1270 DEFAULT_SDES_CNAME, G_PARAM_READWRITE));
1272 g_object_class_install_property (gobject_class, PROP_SDES_NAME,
1273 g_param_spec_string ("sdes-name", "SDES NAME",
1274 "The NAME to put in SDES messages of this session",
1275 DEFAULT_SDES_NAME, G_PARAM_READWRITE));
1277 g_object_class_install_property (gobject_class, PROP_SDES_EMAIL,
1278 g_param_spec_string ("sdes-email", "SDES EMAIL",
1279 "The EMAIL to put in SDES messages of this session",
1280 DEFAULT_SDES_EMAIL, G_PARAM_READWRITE));
1282 g_object_class_install_property (gobject_class, PROP_SDES_PHONE,
1283 g_param_spec_string ("sdes-phone", "SDES PHONE",
1284 "The PHONE to put in SDES messages of this session",
1285 DEFAULT_SDES_PHONE, G_PARAM_READWRITE));
1287 g_object_class_install_property (gobject_class, PROP_SDES_LOCATION,
1288 g_param_spec_string ("sdes-location", "SDES LOCATION",
1289 "The LOCATION to put in SDES messages of this session",
1290 DEFAULT_SDES_LOCATION, G_PARAM_READWRITE));
1292 g_object_class_install_property (gobject_class, PROP_SDES_TOOL,
1293 g_param_spec_string ("sdes-tool", "SDES TOOL",
1294 "The TOOL to put in SDES messages of this session",
1295 DEFAULT_SDES_TOOL, G_PARAM_READWRITE));
1297 g_object_class_install_property (gobject_class, PROP_SDES_NOTE,
1298 g_param_spec_string ("sdes-note", "SDES NOTE",
1299 "The NOTE to put in SDES messages of this session",
1300 DEFAULT_SDES_NOTE, G_PARAM_READWRITE));
1302 gstelement_class->provide_clock =
1303 GST_DEBUG_FUNCPTR (gst_rtp_bin_provide_clock);
1304 gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rtp_bin_change_state);
1305 gstelement_class->request_new_pad =
1306 GST_DEBUG_FUNCPTR (gst_rtp_bin_request_new_pad);
1307 gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_rtp_bin_release_pad);
1309 gstbin_class->handle_message = GST_DEBUG_FUNCPTR (gst_rtp_bin_handle_message);
1311 klass->clear_pt_map = GST_DEBUG_FUNCPTR (gst_rtp_bin_clear_pt_map);
1313 GST_DEBUG_CATEGORY_INIT (gst_rtp_bin_debug, "rtpbin", 0, "RTP bin");
1317 gst_rtp_bin_init (GstRtpBin * rtpbin, GstRtpBinClass * klass)
1321 rtpbin->priv = GST_RTP_BIN_GET_PRIVATE (rtpbin);
1322 rtpbin->priv->bin_lock = g_mutex_new ();
1323 rtpbin->provided_clock = gst_system_clock_obtain ();
1324 rtpbin->latency = DEFAULT_LATENCY_MS;
1326 /* some default SDES entries */
1327 str = g_strdup_printf ("%s@%s", g_get_user_name (), g_get_host_name ());
1328 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_CNAME, str);
1331 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_NAME, g_get_real_name ());
1332 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_TOOL, "GStreamer");
1336 gst_rtp_bin_dispose (GObject * object)
1340 rtpbin = GST_RTP_BIN (object);
1342 g_slist_foreach (rtpbin->sessions, (GFunc) free_session, NULL);
1343 g_slist_free (rtpbin->sessions);
1344 rtpbin->sessions = NULL;
1345 g_slist_foreach (rtpbin->clients, (GFunc) free_client, NULL);
1346 g_slist_free (rtpbin->clients);
1347 rtpbin->clients = NULL;
1349 G_OBJECT_CLASS (parent_class)->dispose (object);
1353 gst_rtp_bin_finalize (GObject * object)
1358 rtpbin = GST_RTP_BIN (object);
1360 for (i = 0; i < 9; i++)
1361 g_free (rtpbin->sdes[i]);
1363 g_mutex_free (rtpbin->priv->bin_lock);
1364 gst_object_unref (rtpbin->provided_clock);
1366 G_OBJECT_CLASS (parent_class)->finalize (object);
1369 static const gchar *
1370 sdes_type_to_name (GstRTCPSDESType type)
1372 const gchar *result;
1375 case GST_RTCP_SDES_CNAME:
1376 result = "sdes-cname";
1378 case GST_RTCP_SDES_NAME:
1379 result = "sdes-name";
1381 case GST_RTCP_SDES_EMAIL:
1382 result = "sdes-email";
1384 case GST_RTCP_SDES_PHONE:
1385 result = "sdes-phone";
1387 case GST_RTCP_SDES_LOC:
1388 result = "sdes-location";
1390 case GST_RTCP_SDES_TOOL:
1391 result = "sdes-tool";
1393 case GST_RTCP_SDES_NOTE:
1394 result = "sdes-note";
1396 case GST_RTCP_SDES_PRIV:
1397 result = "sdes-priv";
1407 gst_rtp_bin_set_sdes_string (GstRtpBin * bin, GstRTCPSDESType type,
1413 if (type < 0 || type > 8)
1416 GST_OBJECT_LOCK (bin);
1417 g_free (bin->sdes[type]);
1418 bin->sdes[type] = g_strdup (data);
1419 name = sdes_type_to_name (type);
1420 /* store in all sessions */
1421 for (item = bin->sessions; item; item = g_slist_next (item))
1422 g_object_set (item->data, name, bin->sdes[type], NULL);
1423 GST_OBJECT_UNLOCK (bin);
1427 gst_rtp_bin_get_sdes_string (GstRtpBin * bin, GstRTCPSDESType type)
1431 if (type < 0 || type > 8)
1434 GST_OBJECT_LOCK (bin);
1435 result = g_strdup (bin->sdes[type]);
1436 GST_OBJECT_UNLOCK (bin);
1442 gst_rtp_bin_set_property (GObject * object, guint prop_id,
1443 const GValue * value, GParamSpec * pspec)
1447 rtpbin = GST_RTP_BIN (object);
1451 GST_RTP_BIN_LOCK (rtpbin);
1452 rtpbin->latency = g_value_get_uint (value);
1453 GST_RTP_BIN_UNLOCK (rtpbin);
1455 case PROP_SDES_CNAME:
1456 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_CNAME,
1457 g_value_get_string (value));
1459 case PROP_SDES_NAME:
1460 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_NAME,
1461 g_value_get_string (value));
1463 case PROP_SDES_EMAIL:
1464 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_EMAIL,
1465 g_value_get_string (value));
1467 case PROP_SDES_PHONE:
1468 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_PHONE,
1469 g_value_get_string (value));
1471 case PROP_SDES_LOCATION:
1472 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_LOC,
1473 g_value_get_string (value));
1475 case PROP_SDES_TOOL:
1476 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_TOOL,
1477 g_value_get_string (value));
1479 case PROP_SDES_NOTE:
1480 gst_rtp_bin_set_sdes_string (rtpbin, GST_RTCP_SDES_NOTE,
1481 g_value_get_string (value));
1484 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1490 gst_rtp_bin_get_property (GObject * object, guint prop_id,
1491 GValue * value, GParamSpec * pspec)
1495 rtpbin = GST_RTP_BIN (object);
1499 GST_RTP_BIN_LOCK (rtpbin);
1500 g_value_set_uint (value, rtpbin->latency);
1501 GST_RTP_BIN_UNLOCK (rtpbin);
1503 case PROP_SDES_CNAME:
1504 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1505 GST_RTCP_SDES_CNAME));
1507 case PROP_SDES_NAME:
1508 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1509 GST_RTCP_SDES_NAME));
1511 case PROP_SDES_EMAIL:
1512 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1513 GST_RTCP_SDES_EMAIL));
1515 case PROP_SDES_PHONE:
1516 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1517 GST_RTCP_SDES_PHONE));
1519 case PROP_SDES_LOCATION:
1520 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1521 GST_RTCP_SDES_LOC));
1523 case PROP_SDES_TOOL:
1524 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1525 GST_RTCP_SDES_TOOL));
1527 case PROP_SDES_NOTE:
1528 g_value_take_string (value, gst_rtp_bin_get_sdes_string (rtpbin,
1529 GST_RTCP_SDES_NOTE));
1532 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1538 gst_rtp_bin_provide_clock (GstElement * element)
1542 rtpbin = GST_RTP_BIN (element);
1544 return GST_CLOCK_CAST (gst_object_ref (rtpbin->provided_clock));
1548 gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
1552 rtpbin = GST_RTP_BIN (bin);
1554 switch (GST_MESSAGE_TYPE (message)) {
1555 case GST_MESSAGE_ELEMENT:
1557 const GstStructure *s = gst_message_get_structure (message);
1559 /* we change the structure name and add the session ID to it */
1560 if (gst_structure_has_name (s, "GstRTPSessionSDES")) {
1563 /* find the session, the message source has it */
1564 for (walk = rtpbin->sessions; walk; walk = g_slist_next (walk)) {
1565 GstRtpBinSession *sess = (GstRtpBinSession *) walk->data;
1567 /* if we found the session, change message. else we exit the loop and
1568 * leave the message unchanged */
1569 if (GST_OBJECT_CAST (sess->session) == GST_MESSAGE_SRC (message)) {
1570 message = gst_message_make_writable (message);
1571 s = gst_message_get_structure (message);
1573 gst_structure_set_name ((GstStructure *) s, "GstRTPBinSDES");
1575 gst_structure_set ((GstStructure *) s, "session", G_TYPE_UINT,
1581 /* fallthrough to forward the modified message to the parent */
1585 GST_BIN_CLASS (parent_class)->handle_message (bin, message);
1592 calc_ntp_ns_base (GstRtpBin * bin)
1598 /* get the current time and convert it to NTP time in nanoseconds */
1599 g_get_current_time (¤t);
1600 now = GST_TIMEVAL_TO_TIME (current);
1601 now += (2208988800LL * GST_SECOND);
1603 GST_RTP_BIN_LOCK (bin);
1604 bin->priv->ntp_ns_base = now;
1605 for (walk = bin->sessions; walk; walk = g_slist_next (walk)) {
1606 GstRtpBinSession *session = (GstRtpBinSession *) walk->data;
1608 g_object_set (session->session, "ntp-ns-base", now, NULL);
1610 GST_RTP_BIN_UNLOCK (bin);
1615 static GstStateChangeReturn
1616 gst_rtp_bin_change_state (GstElement * element, GstStateChange transition)
1618 GstStateChangeReturn res;
1621 rtpbin = GST_RTP_BIN (element);
1623 switch (transition) {
1624 case GST_STATE_CHANGE_NULL_TO_READY:
1626 case GST_STATE_CHANGE_READY_TO_PAUSED:
1628 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
1629 calc_ntp_ns_base (rtpbin);
1635 res = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
1637 switch (transition) {
1638 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
1640 case GST_STATE_CHANGE_PAUSED_TO_READY:
1642 case GST_STATE_CHANGE_READY_TO_NULL:
1650 /* a new pad (SSRC) was created in @session */
1652 new_payload_found (GstElement * element, guint pt, GstPad * pad,
1653 GstRtpBinStream * stream)
1656 GstElementClass *klass;
1657 GstPadTemplate *templ;
1661 rtpbin = stream->bin;
1663 GST_DEBUG ("new payload pad %d", pt);
1665 /* ghost the pad to the parent */
1666 klass = GST_ELEMENT_GET_CLASS (rtpbin);
1667 templ = gst_element_class_get_pad_template (klass, "recv_rtp_src_%d_%d_%d");
1668 padname = g_strdup_printf ("recv_rtp_src_%d_%u_%d",
1669 stream->session->id, stream->ssrc, pt);
1670 gpad = gst_ghost_pad_new_from_template (padname, pad, templ);
1673 gst_pad_set_caps (gpad, GST_PAD_CAPS (pad));
1674 gst_pad_set_active (gpad, TRUE);
1675 gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), gpad);
1679 pt_map_requested (GstElement * element, guint pt, GstRtpBinSession * session)
1684 rtpbin = session->bin;
1686 GST_DEBUG_OBJECT (rtpbin, "payload map requested for pt %d in session %d", pt,
1689 caps = get_pt_map (session, pt);
1698 GST_DEBUG_OBJECT (rtpbin, "could not get caps");
1703 /* emited when caps changed for the session */
1705 caps_changed (GstPad * pad, GParamSpec * pspec, GstRtpBinSession * session)
1710 const GstStructure *s;
1714 g_object_get (pad, "caps", &caps, NULL);
1719 GST_DEBUG_OBJECT (bin, "got caps %" GST_PTR_FORMAT, caps);
1721 s = gst_caps_get_structure (caps, 0);
1723 /* get payload, finish when it's not there */
1724 if (!gst_structure_get_int (s, "payload", &payload))
1727 GST_RTP_SESSION_LOCK (session);
1728 GST_DEBUG_OBJECT (bin, "insert caps for payload %d", payload);
1729 g_hash_table_insert (session->ptmap, GINT_TO_POINTER (payload), caps);
1730 GST_RTP_SESSION_UNLOCK (session);
1733 /* Stores the last payload type received on a particular stream */
1735 payload_type_change (GstElement * element, guint pt, GstRtpBinStream * stream)
1737 GST_RTP_SESSION_LOCK (stream->session);
1738 stream->last_pt = pt;
1739 GST_RTP_SESSION_UNLOCK (stream->session);
1742 /* a new pad (SSRC) was created in @session */
1744 new_ssrc_pad_found (GstElement * element, guint ssrc, GstPad * pad,
1745 GstRtpBinSession * session)
1747 GstRtpBinStream *stream;
1748 GstPad *sinkpad, *srcpad;
1752 GST_DEBUG_OBJECT (session->bin, "new SSRC pad %08x", ssrc);
1754 GST_RTP_SESSION_LOCK (session);
1756 /* create new stream */
1757 stream = create_stream (session, ssrc);
1761 /* get the caps of the pad, we need the clock-rate and base_time if any. */
1762 if ((caps = gst_pad_get_caps (pad))) {
1763 const GstStructure *s;
1766 GST_DEBUG_OBJECT (session->bin, "pad has caps %" GST_PTR_FORMAT, caps);
1768 s = gst_caps_get_structure (caps, 0);
1770 if (!gst_structure_get_int (s, "clock-rate", &stream->clock_rate)) {
1771 stream->clock_rate = -1;
1773 GST_WARNING_OBJECT (session->bin,
1774 "Caps have no clock rate %s from pad %s:%s",
1775 gst_caps_to_string (caps), GST_DEBUG_PAD_NAME (pad));
1778 if (gst_structure_get_uint (s, "clock-base", &val))
1779 stream->clock_base = val;
1781 stream->clock_base = -1;
1783 gst_caps_unref (caps);
1786 /* get pad and link */
1787 GST_DEBUG_OBJECT (session->bin, "linking jitterbuffer");
1788 padname = g_strdup_printf ("src_%d", ssrc);
1789 srcpad = gst_element_get_static_pad (element, padname);
1791 sinkpad = gst_element_get_static_pad (stream->buffer, "sink");
1792 gst_pad_link (srcpad, sinkpad);
1793 gst_object_unref (sinkpad);
1794 gst_object_unref (srcpad);
1796 /* get the RTCP sync pad */
1797 GST_DEBUG_OBJECT (session->bin, "linking sync pad");
1798 padname = g_strdup_printf ("rtcp_src_%d", ssrc);
1799 srcpad = gst_element_get_static_pad (element, padname);
1801 gst_pad_link (srcpad, stream->sync_pad);
1802 gst_object_unref (srcpad);
1804 /* connect to the new-pad signal of the payload demuxer, this will expose the
1805 * new pad by ghosting it. */
1806 stream->demux_newpad_sig = g_signal_connect (stream->demux,
1807 "new-payload-type", (GCallback) new_payload_found, stream);
1808 /* connect to the request-pt-map signal. This signal will be emited by the
1809 * demuxer so that it can apply a proper caps on the buffers for the
1811 stream->demux_ptreq_sig = g_signal_connect (stream->demux,
1812 "request-pt-map", (GCallback) pt_map_requested, session);
1813 /* connect to the payload-type-change signal so that we can know which
1814 * PT is the current PT so that the jitterbuffer can be matched to the right
1816 stream->demux_pt_change_sig = g_signal_connect (stream->demux,
1817 "payload-type-change", (GCallback) payload_type_change, stream);
1819 GST_RTP_SESSION_UNLOCK (session);
1826 GST_RTP_SESSION_UNLOCK (session);
1827 GST_DEBUG_OBJECT (session->bin, "could not create stream");
1832 /* Create a pad for receiving RTP for the session in @name. Must be called with
1836 create_recv_rtp (GstRtpBin * rtpbin, GstPadTemplate * templ, const gchar * name)
1838 GstPad *result, *sinkdpad;
1840 GstRtpBinSession *session;
1841 GstPadLinkReturn lres;
1843 /* first get the session number */
1844 if (name == NULL || sscanf (name, "recv_rtp_sink_%d", &sessid) != 1)
1847 GST_DEBUG_OBJECT (rtpbin, "finding session %d", sessid);
1849 /* get or create session */
1850 session = find_session_by_id (rtpbin, sessid);
1852 GST_DEBUG_OBJECT (rtpbin, "creating session %d", sessid);
1853 /* create session now */
1854 session = create_session (rtpbin, sessid);
1855 if (session == NULL)
1859 /* check if pad was requested */
1860 if (session->recv_rtp_sink != NULL)
1863 GST_DEBUG_OBJECT (rtpbin, "getting RTP sink pad");
1864 /* get recv_rtp pad and store */
1865 session->recv_rtp_sink =
1866 gst_element_get_request_pad (session->session, "recv_rtp_sink");
1867 if (session->recv_rtp_sink == NULL)
1870 g_signal_connect (session->recv_rtp_sink, "notify::caps",
1871 (GCallback) caps_changed, session);
1873 GST_DEBUG_OBJECT (rtpbin, "getting RTP src pad");
1874 /* get srcpad, link to SSRCDemux */
1875 session->recv_rtp_src =
1876 gst_element_get_static_pad (session->session, "recv_rtp_src");
1877 if (session->recv_rtp_src == NULL)
1880 GST_DEBUG_OBJECT (rtpbin, "getting demuxer RTP sink pad");
1881 sinkdpad = gst_element_get_static_pad (session->demux, "sink");
1882 GST_DEBUG_OBJECT (rtpbin, "linking demuxer RTP sink pad");
1883 lres = gst_pad_link (session->recv_rtp_src, sinkdpad);
1884 gst_object_unref (sinkdpad);
1885 if (lres != GST_PAD_LINK_OK)
1888 /* connect to the new-ssrc-pad signal of the SSRC demuxer */
1889 session->demux_newpad_sig = g_signal_connect (session->demux,
1890 "new-ssrc-pad", (GCallback) new_ssrc_pad_found, session);
1892 GST_DEBUG_OBJECT (rtpbin, "ghosting session sink pad");
1894 gst_ghost_pad_new_from_template (name, session->recv_rtp_sink, templ);
1895 gst_pad_set_active (result, TRUE);
1896 gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
1903 g_warning ("gstrtpbin: invalid name given");
1908 /* create_session already warned */
1913 g_warning ("gstrtpbin: recv_rtp pad already requested for session %d",
1919 g_warning ("gstrtpbin: failed to get session pad");
1924 g_warning ("gstrtpbin: failed to link pads");
1929 /* Create a pad for receiving RTCP for the session in @name. Must be called with
1933 create_recv_rtcp (GstRtpBin * rtpbin, GstPadTemplate * templ,
1938 GstRtpBinSession *session;
1940 GstPadLinkReturn lres;
1942 /* first get the session number */
1943 if (name == NULL || sscanf (name, "recv_rtcp_sink_%d", &sessid) != 1)
1946 GST_DEBUG_OBJECT (rtpbin, "finding session %d", sessid);
1948 /* get or create the session */
1949 session = find_session_by_id (rtpbin, sessid);
1951 GST_DEBUG_OBJECT (rtpbin, "creating session %d", sessid);
1952 /* create session now */
1953 session = create_session (rtpbin, sessid);
1954 if (session == NULL)
1958 /* check if pad was requested */
1959 if (session->recv_rtcp_sink != NULL)
1962 /* get recv_rtp pad and store */
1963 GST_DEBUG_OBJECT (rtpbin, "getting RTCP sink pad");
1964 session->recv_rtcp_sink =
1965 gst_element_get_request_pad (session->session, "recv_rtcp_sink");
1966 if (session->recv_rtcp_sink == NULL)
1969 /* get srcpad, link to SSRCDemux */
1970 GST_DEBUG_OBJECT (rtpbin, "getting sync src pad");
1971 session->sync_src = gst_element_get_static_pad (session->session, "sync_src");
1972 if (session->sync_src == NULL)
1975 GST_DEBUG_OBJECT (rtpbin, "getting demuxer RTCP sink pad");
1976 sinkdpad = gst_element_get_static_pad (session->demux, "rtcp_sink");
1977 lres = gst_pad_link (session->sync_src, sinkdpad);
1978 gst_object_unref (sinkdpad);
1979 if (lres != GST_PAD_LINK_OK)
1983 gst_ghost_pad_new_from_template (name, session->recv_rtcp_sink, templ);
1984 gst_pad_set_active (result, TRUE);
1985 gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
1992 g_warning ("gstrtpbin: invalid name given");
1997 /* create_session already warned */
2002 g_warning ("gstrtpbin: recv_rtcp pad already requested for session %d",
2008 g_warning ("gstrtpbin: failed to get session pad");
2013 g_warning ("gstrtpbin: failed to link pads");
2018 /* Create a pad for sending RTP for the session in @name. Must be called with
2022 create_send_rtp (GstRtpBin * rtpbin, GstPadTemplate * templ, const gchar * name)
2024 GstPad *result, *srcghost;
2027 GstRtpBinSession *session;
2028 GstElementClass *klass;
2030 /* first get the session number */
2031 if (name == NULL || sscanf (name, "send_rtp_sink_%d", &sessid) != 1)
2034 /* get or create session */
2035 session = find_session_by_id (rtpbin, sessid);
2037 /* create session now */
2038 session = create_session (rtpbin, sessid);
2039 if (session == NULL)
2043 /* check if pad was requested */
2044 if (session->send_rtp_sink != NULL)
2047 /* get send_rtp pad and store */
2048 session->send_rtp_sink =
2049 gst_element_get_request_pad (session->session, "send_rtp_sink");
2050 if (session->send_rtp_sink == NULL)
2054 gst_ghost_pad_new_from_template (name, session->send_rtp_sink, templ);
2055 gst_pad_set_active (result, TRUE);
2056 gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
2059 session->send_rtp_src =
2060 gst_element_get_static_pad (session->session, "send_rtp_src");
2061 if (session->send_rtp_src == NULL)
2064 /* ghost the new source pad */
2065 klass = GST_ELEMENT_GET_CLASS (rtpbin);
2066 gname = g_strdup_printf ("send_rtp_src_%d", sessid);
2067 templ = gst_element_class_get_pad_template (klass, "send_rtp_src_%d");
2069 gst_ghost_pad_new_from_template (gname, session->send_rtp_src, templ);
2070 gst_pad_set_active (srcghost, TRUE);
2071 gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), srcghost);
2079 g_warning ("gstrtpbin: invalid name given");
2084 /* create_session already warned */
2089 g_warning ("gstrtpbin: send_rtp pad already requested for session %d",
2095 g_warning ("gstrtpbin: failed to get session pad for session %d", sessid);
2100 g_warning ("gstrtpbin: failed to get rtp source pad for session %d",
2106 /* Create a pad for sending RTCP for the session in @name. Must be called with
2110 create_rtcp (GstRtpBin * rtpbin, GstPadTemplate * templ, const gchar * name)
2114 GstRtpBinSession *session;
2116 /* first get the session number */
2117 if (name == NULL || sscanf (name, "send_rtcp_src_%d", &sessid) != 1)
2120 /* get or create session */
2121 session = find_session_by_id (rtpbin, sessid);
2125 /* check if pad was requested */
2126 if (session->send_rtcp_src != NULL)
2129 /* get rtcp_src pad and store */
2130 session->send_rtcp_src =
2131 gst_element_get_request_pad (session->session, "send_rtcp_src");
2132 if (session->send_rtcp_src == NULL)
2136 gst_ghost_pad_new_from_template (name, session->send_rtcp_src, templ);
2137 gst_pad_set_active (result, TRUE);
2138 gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), result);
2145 g_warning ("gstrtpbin: invalid name given");
2150 g_warning ("gstrtpbin: session with id %d does not exist", sessid);
2155 g_warning ("gstrtpbin: send_rtcp_src pad already requested for session %d",
2161 g_warning ("gstrtpbin: failed to get rtcp pad for session %d", sessid);
2166 /* If the requested name is NULL we should create a name with
2167 * the session number assuming we want the lowest posible session
2168 * with a free pad like the template */
2170 gst_rtp_bin_get_free_pad_name (GstElement * element, GstPadTemplate * templ)
2172 gboolean name_found = FALSE;
2175 GstIterator *pad_it = NULL;
2176 gchar *pad_name = NULL;
2178 GST_DEBUG_OBJECT (element, "find a free pad name for template");
2179 while (!name_found) {
2181 pad_name = g_strdup_printf (templ->name_template, session++);
2182 pad_it = gst_element_iterate_pads (GST_ELEMENT (element));
2184 while (gst_iterator_next (pad_it, (gpointer) & pad) == GST_ITERATOR_OK) {
2187 name = gst_pad_get_name (pad);
2188 if (strcmp (name, pad_name) == 0)
2192 gst_iterator_free (pad_it);
2195 GST_DEBUG_OBJECT (element, "free pad name found: '%s'", pad_name);
2202 gst_rtp_bin_request_new_pad (GstElement * element,
2203 GstPadTemplate * templ, const gchar * name)
2206 GstElementClass *klass;
2208 gchar *pad_name = NULL;
2210 g_return_val_if_fail (templ != NULL, NULL);
2211 g_return_val_if_fail (GST_IS_RTP_BIN (element), NULL);
2213 rtpbin = GST_RTP_BIN (element);
2214 klass = GST_ELEMENT_GET_CLASS (element);
2216 GST_RTP_BIN_LOCK (rtpbin);
2219 /* use a free pad name */
2220 pad_name = gst_rtp_bin_get_free_pad_name (element, templ);
2222 /* use the provided name */
2223 pad_name = g_strdup (name);
2226 GST_DEBUG ("Trying to request a pad with name %s", pad_name);
2228 /* figure out the template */
2229 if (templ == gst_element_class_get_pad_template (klass, "recv_rtp_sink_%d")) {
2230 result = create_recv_rtp (rtpbin, templ, pad_name);
2231 } else if (templ == gst_element_class_get_pad_template (klass,
2232 "recv_rtcp_sink_%d")) {
2233 result = create_recv_rtcp (rtpbin, templ, pad_name);
2234 } else if (templ == gst_element_class_get_pad_template (klass,
2235 "send_rtp_sink_%d")) {
2236 result = create_send_rtp (rtpbin, templ, pad_name);
2237 } else if (templ == gst_element_class_get_pad_template (klass,
2238 "send_rtcp_src_%d")) {
2239 result = create_rtcp (rtpbin, templ, pad_name);
2241 goto wrong_template;
2244 GST_RTP_BIN_UNLOCK (rtpbin);
2252 GST_RTP_BIN_UNLOCK (rtpbin);
2253 g_warning ("gstrtpbin: this is not our template");
2259 gst_rtp_bin_release_pad (GstElement * element, GstPad * pad)