rtpbin : Re-adding use-rtsp-buffering property removed by gstreamer update
[platform/upstream/gst-plugins-good.git] / gst / rtpmanager / gstrtpbin.c
index 6bcc7f8..d10cd01 100644 (file)
@@ -19,6 +19,7 @@
 
 /**
  * SECTION:element-rtpbin
+ * @title: rtpbin
  * @see_also: rtpjitterbuffer, rtpsession, rtpptdemux, rtpssrcdemux
  *
  * RTP bin combines the functions of #GstRtpSession, #GstRtpSsrcDemux,
@@ -50,7 +51,7 @@
  * To use #GstRtpBin as a sender, request a send_rtp_sink_\%u pad, which will
  * automatically create a send_rtp_src_\%u pad. If the session number is not provided,
  * the pad from the lowest available session will be returned. The session manager will modify the
- * SSRC in the RTP packets to its own SSRC and wil forward the packets on the
+ * SSRC in the RTP packets to its own SSRC and will forward the packets on the
  * send_rtp_src_\%u pad after updating its internal state.
  *
  * The session manager needs the clock-rate of the payload types it is handling
  * An AUX receiver has 1 src_\%u pad that much match the sessionid in the signal
  * and 1 or more sink_\%u pads. A session will be made for each sink_\%u pad
  * when the corresponding recv_rtp_sink_\%u pad is requested on #GstRtpBin.
+ * The #GstRtpBin::request-jitterbuffer signal can be used to provide a custom
+ * element to perform arrival time smoothing, reordering and optionally packet
+ * loss detection and retransmission requests.
+ *
+ * ## Example pipelines
  *
- * <refsect2>
- * <title>Example pipelines</title>
  * |[
  * gst-launch-1.0 udpsrc port=5000 caps="application/x-rtp, ..." ! .recv_rtp_sink_0 \
  *     rtpbin ! rtptheoradepay ! theoradec ! xvimagesink
  * synchronisation.
  * Send RTCP reports for session 0 on port 5005 and RTCP reports for session 1
  * on port 5007.
- * </refsect2>
+ *
  */
 
 #ifdef HAVE_CONFIG_H
@@ -274,6 +278,8 @@ enum
   SIGNAL_REQUEST_FEC_DECODER,
   SIGNAL_REQUEST_FEC_ENCODER,
 
+  SIGNAL_REQUEST_JITTERBUFFER,
+
   SIGNAL_NEW_JITTERBUFFER,
   SIGNAL_NEW_STORAGE,
 
@@ -311,6 +317,9 @@ enum
 #define DEFAULT_MAX_STREAMS          G_MAXUINT
 #define DEFAULT_MAX_TS_OFFSET_ADJUSTMENT G_GUINT64_CONSTANT(0)
 #define DEFAULT_MAX_TS_OFFSET        G_GINT64_CONSTANT(3000000000)
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+#define DEFAULT_RTSP_USE_BUFFERING  FALSE
+#endif
 
 enum
 {
@@ -338,6 +347,9 @@ enum
   PROP_MAX_STREAMS,
   PROP_MAX_TS_OFFSET_ADJUSTMENT,
   PROP_MAX_TS_OFFSET,
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  PROP_USE_RTSP_BUFFERING       /* use for player RTSP buffering */
+#endif
 };
 
 #define GST_RTP_BIN_RTCP_SYNC_TYPE (gst_rtp_bin_rtcp_sync_get_type())
@@ -383,10 +395,12 @@ complete_session_receiver (GstRtpBin * rtpbin, GstRtpBinSession * session,
     guint sessid);
 static GstPad *complete_session_rtcp (GstRtpBin * rtpbin,
     GstRtpBinSession * session, guint sessid);
+static GstElement *session_request_element (GstRtpBinSession * session,
+    guint signal);
 
 /* Manages the RTP stream for one SSRC.
  *
- * We pipe the stream (comming from the SSRC demuxer) into a jitterbuffer.
+ * We pipe the stream (coming from the SSRC demuxer) into a jitterbuffer.
  * If we see an SDES RTCP packet that links multiple SSRCs together based on a
  * common CNAME, we create a GstRtpBinClient structure to group the SSRCs
  * together (see below).
@@ -408,7 +422,9 @@ struct _GstRtpBinStream
   gulong buffer_ptreq_sig;
   gulong buffer_ntpstop_sig;
   gint percent;
-
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  gint prev_percent;
+#endif
   /* the PT demuxer of the SSRC */
   GstElement *demux;
   gulong demux_newpad_sig;
@@ -693,6 +709,7 @@ create_session (GstRtpBin * rtpbin, gint id)
 
   /* configure SDES items */
   GST_OBJECT_LOCK (rtpbin);
+  g_object_set (demux, "max-streams", rtpbin->max_streams, NULL);
   g_object_set (session, "sdes", rtpbin->sdes, "rtp-profile",
       rtpbin->rtp_profile, "rtcp-sync-send-time", rtpbin->rtcp_sync_send_time,
       NULL);
@@ -833,9 +850,11 @@ free_session (GstRtpBinSession * sess, GstRtpBin * bin)
 
   gst_element_set_locked_state (sess->demux, TRUE);
   gst_element_set_locked_state (sess->session, TRUE);
+  gst_element_set_locked_state (sess->storage, TRUE);
 
   gst_element_set_state (sess->demux, GST_STATE_NULL);
   gst_element_set_state (sess->session, GST_STATE_NULL);
+  gst_element_set_state (sess->storage, GST_STATE_NULL);
 
   remove_recv_rtp (bin, sess);
   remove_recv_rtcp (bin, sess);
@@ -844,9 +863,11 @@ free_session (GstRtpBinSession * sess, GstRtpBin * bin)
 
   gst_bin_remove (GST_BIN_CAST (bin), sess->session);
   gst_bin_remove (GST_BIN_CAST (bin), sess->demux);
+  gst_bin_remove (GST_BIN_CAST (bin), sess->storage);
 
   g_slist_foreach (sess->elements, (GFunc) remove_bin_element, bin);
   g_slist_free (sess->elements);
+  sess->elements = NULL;
 
   g_slist_foreach (sess->streams, (GFunc) free_stream, bin);
   g_slist_free (sess->streams);
@@ -879,7 +900,7 @@ get_pt_map (GstRtpBinSession * session, guint pt)
 
   bin = session->bin;
 
-  GST_DEBUG ("emiting signal for pt %u in session %u", pt, session->id);
+  GST_DEBUG ("emitting signal for pt %u in session %u", pt, session->id);
 
   /* not in cache, send signal to request caps */
   g_value_init (&args[0], GST_TYPE_ELEMENT);
@@ -987,7 +1008,8 @@ gst_rtp_bin_clear_pt_map (GstRtpBin * bin)
       GstRtpBinStream *stream = (GstRtpBinStream *) streams->data;
 
       GST_DEBUG_OBJECT (bin, "clearing stream %p", stream);
-      g_signal_emit_by_name (stream->buffer, "clear-pt-map", NULL);
+      if (g_signal_lookup ("clear-pt-map", G_OBJECT_TYPE (stream->buffer)) != 0)
+        g_signal_emit_by_name (stream->buffer, "clear-pt-map", NULL);
       if (stream->demux)
         g_signal_emit_by_name (stream->demux, "clear-pt-map", NULL);
     }
@@ -1086,6 +1108,12 @@ gst_rtp_bin_request_decoder (GstRtpBin * bin, guint session_id)
   return NULL;
 }
 
+static GstElement *
+gst_rtp_bin_request_jitterbuffer (GstRtpBin * bin, guint session_id)
+{
+  return gst_element_factory_make ("rtpjitterbuffer", NULL);
+}
+
 static void
 gst_rtp_bin_propagate_property_to_jitterbuffer (GstRtpBin * bin,
     const gchar * name, const GValue * value)
@@ -1099,8 +1127,14 @@ gst_rtp_bin_propagate_property_to_jitterbuffer (GstRtpBin * bin,
     GST_RTP_SESSION_LOCK (session);
     for (streams = session->streams; streams; streams = g_slist_next (streams)) {
       GstRtpBinStream *stream = (GstRtpBinStream *) streams->data;
+      GObjectClass *jb_class;
 
-      g_object_set_property (G_OBJECT (stream->buffer), name, value);
+      jb_class = G_OBJECT_GET_CLASS (G_OBJECT (stream->buffer));
+      if (g_object_class_find_property (jb_class, name))
+        g_object_set_property (G_OBJECT (stream->buffer), name, value);
+      else
+        GST_WARNING_OBJECT (bin,
+            "Stream jitterbuffer does not expose property %s", name);
     }
     GST_RTP_SESSION_UNLOCK (session);
   }
@@ -1190,11 +1224,8 @@ get_current_times (GstRtpBin * bin, GstClockTime * running_time,
       switch (bin->ntp_time_source) {
         case GST_RTP_NTP_TIME_SOURCE_NTP:
         case GST_RTP_NTP_TIME_SOURCE_UNIX:{
-          GTimeVal current;
-
           /* get current NTP time */
-          g_get_current_time (&current);
-          ntpns = GST_TIMEVAL_TO_TIME (current);
+          ntpns = g_get_real_time () * GST_USECOND;
 
           /* add constant to convert from 1970 based time to 1900 based time */
           if (bin->ntp_time_source == GST_RTP_NTP_TIME_SOURCE_NTP)
@@ -1232,6 +1263,15 @@ stream_set_ts_offset (GstRtpBin * bin, GstRtpBinStream * stream,
     gboolean allow_positive_ts_offset)
 {
   gint64 prev_ts_offset;
+  GObjectClass *jb_class;
+
+  jb_class = G_OBJECT_GET_CLASS (G_OBJECT (stream->buffer));
+
+  if (!g_object_class_find_property (jb_class, "ts-offset")) {
+    GST_LOG_OBJECT (bin,
+        "stream's jitterbuffer does not expose ts-offset property");
+    return;
+  }
 
   g_object_get (stream->buffer, "ts-offset", &prev_ts_offset, NULL);
 
@@ -1380,7 +1420,7 @@ gst_rtp_bin_associate (GstRtpBin * bin, GstRtpBinStream * stream, guint8 len,
     /* For NTP sync we need to first get a snapshot of running_time and NTP
      * time. We know at what running_time we play a certain RTP time, we also
      * calculated when we would play the RTP time in the SR packet. Now we need
-     * to know how the running_time and the NTP time relate to eachother. */
+     * to know how the running_time and the NTP time relate to each other. */
     get_current_times (bin, &local_running_time, &local_ntpnstime);
 
     /* see how far away the NTP time is. This is the difference between the
@@ -1421,9 +1461,9 @@ gst_rtp_bin_associate (GstRtpBin * bin, GstRtpBinStream * stream, guint8 len,
     /* calculate the min of all deltas, ignoring streams that did not yet have a
      * valid rt_delta because we did not yet receive an SR packet for those
      * streams.
-     * We calculate the mininum because we would like to only apply positive
+     * We calculate the minimum because we would like to only apply positive
      * offsets to streams, delaying their playback instead of trying to speed up
-     * other streams (which might be imposible when we have to create negative
+     * other streams (which might be impossible when we have to create negative
      * latencies).
      * The stream that has the smallest diff is selected as the reference stream,
      * all other streams will have a positive offset to this difference. */
@@ -1436,7 +1476,7 @@ gst_rtp_bin_associate (GstRtpBin * bin, GstRtpBinStream * stream, guint8 len,
       guint64 ext_base;
 
       use_rtp = TRUE;
-      /* signed version for convienience */
+      /* signed version for convenience */
       clock_base = base_rtptime;
       /* deal with possible wrap-around */
       ext_base = base_rtptime;
@@ -1687,85 +1727,138 @@ static GstRtpBinStream *
 create_stream (GstRtpBinSession * session, guint32 ssrc)
 {
   GstElement *buffer, *demux = NULL;
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  GstElement *queue2 = NULL;
+#endif
   GstRtpBinStream *stream;
   GstRtpBin *rtpbin;
   GstState target;
+  GObjectClass *jb_class;
 
   rtpbin = session->bin;
 
   if (g_slist_length (session->streams) >= rtpbin->max_streams)
     goto max_streams;
 
-  if (!(buffer = gst_element_factory_make ("rtpjitterbuffer", NULL)))
+  if (!(buffer =
+          session_request_element (session, SIGNAL_REQUEST_JITTERBUFFER)))
     goto no_jitterbuffer;
 
   if (!rtpbin->ignore_pt) {
     if (!(demux = gst_element_factory_make ("rtpptdemux", NULL)))
       goto no_demux;
   }
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  if (rtpbin->use_rtsp_buffering &&
+      rtpbin->buffer_mode == RTP_JITTER_BUFFER_MODE_SLAVE) {
+    if (!(queue2 = gst_element_factory_make ("queue2", NULL)))
+      goto no_queue2;
+  }
+#endif
 
   stream = g_new0 (GstRtpBinStream, 1);
   stream->ssrc = ssrc;
   stream->bin = rtpbin;
   stream->session = session;
-  stream->buffer = buffer;
+  stream->buffer = gst_object_ref (buffer);
   stream->demux = demux;
 
   stream->have_sync = FALSE;
   stream->rt_delta = 0;
   stream->rtp_delta = 0;
   stream->percent = 100;
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  stream->prev_percent = 0;
+#endif
   stream->clock_base = -100 * GST_SECOND;
   session->streams = g_slist_prepend (session->streams, stream);
 
-  /* provide clock_rate to the jitterbuffer when needed */
-  stream->buffer_ptreq_sig = g_signal_connect (buffer, "request-pt-map",
-      (GCallback) pt_map_requested, session);
-  stream->buffer_ntpstop_sig = g_signal_connect (buffer, "on-npt-stop",
-      (GCallback) on_npt_stop, stream);
+  jb_class = G_OBJECT_GET_CLASS (G_OBJECT (buffer));
+
+  if (g_signal_lookup ("request-pt-map", G_OBJECT_TYPE (buffer)) != 0) {
+    /* provide clock_rate to the jitterbuffer when needed */
+    stream->buffer_ptreq_sig = g_signal_connect (buffer, "request-pt-map",
+        (GCallback) pt_map_requested, session);
+  }
+  if (g_signal_lookup ("on-npt-stop", G_OBJECT_TYPE (buffer)) != 0) {
+    stream->buffer_ntpstop_sig = g_signal_connect (buffer, "on-npt-stop",
+        (GCallback) on_npt_stop, stream);
+  }
 
   g_object_set_data (G_OBJECT (buffer), "GstRTPBin.session", session);
   g_object_set_data (G_OBJECT (buffer), "GstRTPBin.stream", stream);
 
   /* configure latency and packet lost */
   g_object_set (buffer, "latency", rtpbin->latency_ms, NULL);
-  g_object_set (buffer, "drop-on-latency", rtpbin->drop_on_latency, NULL);
-  g_object_set (buffer, "do-lost", rtpbin->do_lost, NULL);
-  g_object_set (buffer, "mode", rtpbin->buffer_mode, NULL);
-  g_object_set (buffer, "do-retransmission", rtpbin->do_retransmission, NULL);
-  g_object_set (buffer, "max-rtcp-rtp-time-diff",
-      rtpbin->max_rtcp_rtp_time_diff, NULL);
-  g_object_set (buffer, "max-dropout-time", rtpbin->max_dropout_time,
-      "max-misorder-time", rtpbin->max_misorder_time, NULL);
-  g_object_set (buffer, "rfc7273-sync", rtpbin->rfc7273_sync, NULL);
-  g_object_set (buffer, "max-ts-offset-adjustment",
-      rtpbin->max_ts_offset_adjustment, NULL);
 
-  /* need to sink the jitterbufer or otherwise signal handlers from bindings will
-   * take ownership of it and we don't own it anymore */
-  gst_object_ref_sink (buffer);
+  if (g_object_class_find_property (jb_class, "drop-on-latency"))
+    g_object_set (buffer, "drop-on-latency", rtpbin->drop_on_latency, NULL);
+  if (g_object_class_find_property (jb_class, "do-lost"))
+    g_object_set (buffer, "do-lost", rtpbin->do_lost, NULL);
+  if (g_object_class_find_property (jb_class, "mode"))
+    g_object_set (buffer, "mode", rtpbin->buffer_mode, NULL);
+  if (g_object_class_find_property (jb_class, "do-retransmission"))
+    g_object_set (buffer, "do-retransmission", rtpbin->do_retransmission, NULL);
+  if (g_object_class_find_property (jb_class, "max-rtcp-rtp-time-diff"))
+    g_object_set (buffer, "max-rtcp-rtp-time-diff",
+        rtpbin->max_rtcp_rtp_time_diff, NULL);
+  if (g_object_class_find_property (jb_class, "max-dropout-time"))
+    g_object_set (buffer, "max-dropout-time", rtpbin->max_dropout_time, NULL);
+  if (g_object_class_find_property (jb_class, "max-misorder-time"))
+    g_object_set (buffer, "max-misorder-time", rtpbin->max_misorder_time, NULL);
+  if (g_object_class_find_property (jb_class, "rfc7273-sync"))
+    g_object_set (buffer, "rfc7273-sync", rtpbin->rfc7273_sync, NULL);
+  if (g_object_class_find_property (jb_class, "max-ts-offset-adjustment"))
+    g_object_set (buffer, "max-ts-offset-adjustment",
+        rtpbin->max_ts_offset_adjustment, NULL);
+
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  /* configure queue2 to use live buffering */
+  if (queue2) {
+    g_object_set_data (G_OBJECT (queue2), "GstRTPBin.stream", stream);
+    g_object_set (queue2, "use-buffering", TRUE, NULL);
+    g_object_set (queue2, "buffer-mode", GST_BUFFERING_LIVE, NULL);
+  }
+#endif
   g_signal_emit (rtpbin, gst_rtp_bin_signals[SIGNAL_NEW_JITTERBUFFER], 0,
       buffer, session->id, ssrc);
 
   if (!rtpbin->ignore_pt)
     gst_bin_add (GST_BIN_CAST (rtpbin), demux);
-  gst_bin_add (GST_BIN_CAST (rtpbin), buffer);
 
-  /* unref the jitterbuffer again, the bin has a reference now and
-   * we don't need it anymore */
-  gst_object_unref (buffer);
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  if (queue2)
+    gst_bin_add (GST_BIN_CAST (rtpbin), queue2);
+#endif
 
   /* link stuff */
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  if (queue2) {
+    gst_element_link_pads_full (buffer, "src", queue2, "sink",
+        GST_PAD_LINK_CHECK_NOTHING);
+    if (demux) {
+      gst_element_link_pads_full (queue2, "src", demux, "sink",
+          GST_PAD_LINK_CHECK_NOTHING);
+    }
+  } else if (demux) {
+    gst_element_link_pads_full (buffer, "src", demux, "sink",
+        GST_PAD_LINK_CHECK_NOTHING);
+  }
+#else
   if (demux)
     gst_element_link_pads_full (buffer, "src", demux, "sink",
         GST_PAD_LINK_CHECK_NOTHING);
 
+#endif
   if (rtpbin->buffering) {
     guint64 last_out;
 
-    GST_INFO_OBJECT (rtpbin,
-        "bin is buffering, set jitterbuffer as not active");
-    g_signal_emit_by_name (buffer, "set-active", FALSE, (gint64) 0, &last_out);
+    if (g_signal_lookup ("set-active", G_OBJECT_TYPE (buffer)) != 0) {
+      GST_INFO_OBJECT (rtpbin,
+          "bin is buffering, set jitterbuffer as not active");
+      g_signal_emit_by_name (buffer, "set-active", FALSE, (gint64) 0,
+          &last_out);
+    }
   }
 
 
@@ -1779,12 +1872,17 @@ create_stream (GstRtpBinSession * session, guint32 ssrc)
 
   gst_element_set_state (buffer, target);
 
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  if (queue2)
+    gst_element_set_state (queue2, target);
+#endif
+
   return stream;
 
   /* ERRORS */
 max_streams:
   {
-    GST_WARNING_OBJECT (rtpbin, "stream exeeds maximum (%d)",
+    GST_WARNING_OBJECT (rtpbin, "stream exceeds maximum (%d)",
         rtpbin->max_streams);
     return NULL;
   }
@@ -1799,39 +1897,52 @@ no_demux:
     g_warning ("rtpbin: could not create rtpptdemux element");
     return NULL;
   }
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+no_queue2:
+  {
+    gst_object_unref (buffer);
+    gst_object_unref (demux);
+    g_warning ("rtpbin: could not create queue2 element");
+    return NULL;
+  }
+#endif
 }
 
 /* called with RTP_BIN_LOCK */
 static void
 free_stream (GstRtpBinStream * stream, GstRtpBin * bin)
 {
+  GstRtpBinSession *sess = stream->session;
   GSList *clients, *next_client;
 
   GST_DEBUG_OBJECT (bin, "freeing stream %p", stream);
 
-  if (stream->demux) {
-    g_signal_handler_disconnect (stream->demux, stream->demux_newpad_sig);
-    g_signal_handler_disconnect (stream->demux, stream->demux_ptreq_sig);
-    g_signal_handler_disconnect (stream->demux, stream->demux_ptchange_sig);
-  }
-  g_signal_handler_disconnect (stream->buffer, stream->buffer_handlesync_sig);
-  g_signal_handler_disconnect (stream->buffer, stream->buffer_ptreq_sig);
-  g_signal_handler_disconnect (stream->buffer, stream->buffer_ntpstop_sig);
-
+  gst_element_set_locked_state (stream->buffer, TRUE);
   if (stream->demux)
     gst_element_set_locked_state (stream->demux, TRUE);
-  gst_element_set_locked_state (stream->buffer, TRUE);
 
+  gst_element_set_state (stream->buffer, GST_STATE_NULL);
   if (stream->demux)
     gst_element_set_state (stream->demux, GST_STATE_NULL);
-  gst_element_set_state (stream->buffer, GST_STATE_NULL);
 
-  /* now remove this signal, we need this while going to NULL because it to
-   * do some cleanups */
-  if (stream->demux)
+  if (stream->demux) {
+    g_signal_handler_disconnect (stream->demux, stream->demux_newpad_sig);
+    g_signal_handler_disconnect (stream->demux, stream->demux_ptreq_sig);
+    g_signal_handler_disconnect (stream->demux, stream->demux_ptchange_sig);
     g_signal_handler_disconnect (stream->demux, stream->demux_padremoved_sig);
+  }
+
+  if (stream->buffer_handlesync_sig)
+    g_signal_handler_disconnect (stream->buffer, stream->buffer_handlesync_sig);
+  if (stream->buffer_ptreq_sig)
+    g_signal_handler_disconnect (stream->buffer, stream->buffer_ptreq_sig);
+  if (stream->buffer_ntpstop_sig)
+    g_signal_handler_disconnect (stream->buffer, stream->buffer_ntpstop_sig);
+
+  sess->elements = g_slist_remove (sess->elements, stream->buffer);
+  remove_bin_element (stream->buffer, bin);
+  gst_object_unref (stream->buffer);
 
-  gst_bin_remove (GST_BIN_CAST (bin), stream->buffer);
   if (stream->demux)
     gst_bin_remove (GST_BIN_CAST (bin), stream->demux);
 
@@ -1951,8 +2062,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_PT_MAP] =
       g_signal_new ("request-pt-map", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, request_pt_map),
-      _gst_caps_accumulator, NULL, g_cclosure_marshal_generic, GST_TYPE_CAPS,
-      2, G_TYPE_UINT, G_TYPE_UINT);
+      _gst_caps_accumulator, NULL, NULL, GST_TYPE_CAPS, 2, G_TYPE_UINT,
+      G_TYPE_UINT);
 
     /**
    * GstRtpBin::payload-type-change:
@@ -1965,8 +2076,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_PAYLOAD_TYPE_CHANGE] =
       g_signal_new ("payload-type-change", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, payload_type_change),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
 
   /**
    * GstRtpBin::clear-pt-map:
@@ -1978,8 +2088,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_CLEAR_PT_MAP] =
       g_signal_new ("clear-pt-map", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
-          clear_pt_map), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE,
-      0, G_TYPE_NONE);
+          clear_pt_map), NULL, NULL, NULL, G_TYPE_NONE, 0, G_TYPE_NONE);
 
   /**
    * GstRtpBin::reset-sync:
@@ -1991,8 +2100,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_RESET_SYNC] =
       g_signal_new ("reset-sync", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
-          reset_sync), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE,
-      0, G_TYPE_NONE);
+          reset_sync), NULL, NULL, NULL, G_TYPE_NONE, 0, G_TYPE_NONE);
 
   /**
    * GstRtpBin::get-session:
@@ -2006,8 +2114,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_GET_SESSION] =
       g_signal_new ("get-session", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
-          get_session), NULL, NULL, g_cclosure_marshal_generic,
-      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          get_session), NULL, NULL, NULL, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::get-internal-session:
@@ -2019,38 +2126,40 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_GET_INTERNAL_SESSION] =
       g_signal_new ("get-internal-session", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
-          get_internal_session), NULL, NULL, g_cclosure_marshal_generic,
-      RTP_TYPE_SESSION, 1, G_TYPE_UINT);
+          get_internal_session), NULL, NULL, NULL, RTP_TYPE_SESSION, 1,
+      G_TYPE_UINT);
 
   /**
    * GstRtpBin::get-internal-storage:
    * @rtpbin: the object which received the signal
    * @id: the session id
    *
-   * Request the internal RTPStorage object as #GObject in session @id.
+   * Request the internal RTPStorage object as #GObject in session @id. This
+   * is the internal storage used by the RTPStorage element, which is used to
+   * keep a backlog of received RTP packets for the session @id.
    *
    * Since: 1.14
    */
   gst_rtp_bin_signals[SIGNAL_GET_INTERNAL_STORAGE] =
       g_signal_new ("get-internal-storage", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
-          get_internal_storage), NULL, NULL, g_cclosure_marshal_generic,
-      G_TYPE_OBJECT, 1, G_TYPE_UINT);
+          get_internal_storage), NULL, NULL, NULL, G_TYPE_OBJECT, 1,
+      G_TYPE_UINT);
 
   /**
    * GstRtpBin::get-storage:
    * @rtpbin: the object which received the signal
    * @id: the session id
    *
-   * Request the RTPStorage element as #GObject in session @id.
+   * Request the RTPStorage element as #GObject in session @id. This element
+   * is used to keep a backlog of received RTP packets for the session @id.
    *
    * Since: 1.16
    */
   gst_rtp_bin_signals[SIGNAL_GET_STORAGE] =
       g_signal_new ("get-storage", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstRtpBinClass,
-          get_storage), NULL, NULL, g_cclosure_marshal_generic,
-      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          get_storage), NULL, NULL, NULL, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::on-new-ssrc:
@@ -2063,8 +2172,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_NEW_SSRC] =
       g_signal_new ("on-new-ssrc", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_new_ssrc),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-ssrc-collision:
    * @rtpbin: the object which received the signal
@@ -2076,8 +2184,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_SSRC_COLLISION] =
       g_signal_new ("on-ssrc-collision", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_collision),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-ssrc-validated:
    * @rtpbin: the object which received the signal
@@ -2089,8 +2196,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_SSRC_VALIDATED] =
       g_signal_new ("on-ssrc-validated", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_validated),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-ssrc-active:
    * @rtpbin: the object which received the signal
@@ -2102,8 +2208,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_SSRC_ACTIVE] =
       g_signal_new ("on-ssrc-active", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_active),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-ssrc-sdes:
    * @rtpbin: the object which received the signal
@@ -2115,8 +2220,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_SSRC_SDES] =
       g_signal_new ("on-ssrc-sdes", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_ssrc_sdes),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
 
   /**
    * GstRtpBin::on-bye-ssrc:
@@ -2129,8 +2233,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_BYE_SSRC] =
       g_signal_new ("on-bye-ssrc", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_bye_ssrc),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-bye-timeout:
    * @rtpbin: the object which received the signal
@@ -2142,8 +2245,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_BYE_TIMEOUT] =
       g_signal_new ("on-bye-timeout", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_bye_timeout),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-timeout:
    * @rtpbin: the object which received the signal
@@ -2155,8 +2257,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_TIMEOUT] =
       g_signal_new ("on-timeout", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_timeout),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-sender-timeout:
    * @rtpbin: the object which received the signal
@@ -2168,8 +2269,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_SENDER_TIMEOUT] =
       g_signal_new ("on-sender-timeout", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_sender_timeout),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
 
   /**
    * GstRtpBin::on-npt-stop:
@@ -2182,8 +2282,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_NPT_STOP] =
       g_signal_new ("on-npt-stop", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_npt_stop),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-rtp-encoder:
@@ -2200,8 +2299,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_RTP_ENCODER] =
       g_signal_new ("request-rtp-encoder", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_rtp_encoder), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          request_rtp_encoder), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-rtp-decoder:
@@ -2219,7 +2318,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
       g_signal_new ("request-rtp-decoder", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
           request_rtp_decoder), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+      NULL, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-rtcp-encoder:
@@ -2236,8 +2335,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_RTCP_ENCODER] =
       g_signal_new ("request-rtcp-encoder", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_rtcp_encoder), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          request_rtcp_encoder), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-rtcp-decoder:
@@ -2254,7 +2353,35 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_RTCP_DECODER] =
       g_signal_new ("request-rtcp-decoder", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_rtcp_decoder), _gst_element_accumulator, NULL,
+          request_rtcp_decoder), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+
+  /**
+   * GstRtpBin::request-jitterbuffer:
+   * @rtpbin: the object which received the signal
+   * @session: the session
+   *
+   * Request a jitterbuffer element for the given @session.
+   *
+   * If no handler is connected, the default jitterbuffer will be used.
+   *
+   * Note: The provided element is expected to conform to the API exposed
+   * by the standard #GstRtpJitterBuffer. Runtime checks will be made to
+   * determine whether it exposes properties and signals before attempting
+   * to set, call or connect to them, and some functionalities of #GstRtpBin
+   * may not be available when that is not the case.
+   *
+   * This should be considered experimental API, as the standard jitterbuffer
+   * API is susceptible to change, provided elements will have to update their
+   * custom jitterbuffer's API to match the API of #GstRtpJitterBuffer if and
+   * when it changes.
+   *
+   * Since: 1.18
+   */
+  gst_rtp_bin_signals[SIGNAL_REQUEST_JITTERBUFFER] =
+      g_signal_new ("request-jitterbuffer", G_TYPE_FROM_CLASS (klass),
+      G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
+          request_jitterbuffer), _gst_element_accumulator, NULL,
       g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
@@ -2272,7 +2399,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_NEW_JITTERBUFFER] =
       g_signal_new ("new-jitterbuffer", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          new_jitterbuffer), NULL, NULL, g_cclosure_marshal_generic,
+          new_jitterbuffer), NULL, NULL, NULL,
       G_TYPE_NONE, 3, GST_TYPE_ELEMENT, G_TYPE_UINT, G_TYPE_UINT);
 
   /**
@@ -2289,7 +2416,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_NEW_STORAGE] =
       g_signal_new ("new-storage", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          new_storage), NULL, NULL, g_cclosure_marshal_generic,
+          new_storage), NULL, NULL, NULL,
       G_TYPE_NONE, 2, GST_TYPE_ELEMENT, G_TYPE_UINT);
 
   /**
@@ -2307,8 +2434,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_AUX_SENDER] =
       g_signal_new ("request-aux-sender", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_aux_sender), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          request_aux_sender), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-aux-receiver:
@@ -2325,8 +2452,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_AUX_RECEIVER] =
       g_signal_new ("request-aux-receiver", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_aux_receiver), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          request_aux_receiver), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-fec-decoder:
@@ -2343,8 +2470,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_FEC_DECODER] =
       g_signal_new ("request-fec-decoder", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_fec_decoder), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          request_fec_decoder), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::request-fec-encoder:
@@ -2361,8 +2488,8 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_REQUEST_FEC_ENCODER] =
       g_signal_new ("request-fec-encoder", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          request_fec_encoder), _gst_element_accumulator, NULL,
-      g_cclosure_marshal_generic, GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
+          request_fec_encoder), _gst_element_accumulator, NULL, NULL,
+      GST_TYPE_ELEMENT, 1, G_TYPE_UINT);
 
   /**
    * GstRtpBin::on-new-sender-ssrc:
@@ -2377,8 +2504,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_NEW_SENDER_SSRC] =
       g_signal_new ("on-new-sender-ssrc", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass, on_new_sender_ssrc),
-      NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2, G_TYPE_UINT,
-      G_TYPE_UINT);
+      NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
   /**
    * GstRtpBin::on-sender-ssrc-active:
    * @rtpbin: the object which received the signal
@@ -2392,13 +2518,18 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   gst_rtp_bin_signals[SIGNAL_ON_SENDER_SSRC_ACTIVE] =
       g_signal_new ("on-sender-ssrc-active", G_TYPE_FROM_CLASS (klass),
       G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRtpBinClass,
-          on_sender_ssrc_active), NULL, NULL, g_cclosure_marshal_generic,
+          on_sender_ssrc_active), NULL, NULL, NULL,
       G_TYPE_NONE, 2, G_TYPE_UINT, G_TYPE_UINT);
 
   g_object_class_install_property (gobject_class, PROP_SDES,
       g_param_spec_boxed ("sdes", "SDES",
           "The SDES items of this session",
-          GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+          GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS
+#ifndef TIZEN_FEATURE_GST_UPSTREAM_AVOID_BUILD_BREAK
+          | GST_PARAM_DOC_SHOW_DEFAULT));
+#else
+          ));
+#endif
 
   g_object_class_install_property (gobject_class, PROP_DO_LOST,
       g_param_spec_boolean ("do-lost", "Do Lost",
@@ -2476,7 +2607,7 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
    *
    * Enables RTP retransmission on all streams. To control retransmission on
    * a per-SSRC basis, connect to the #GstRtpBin::new-jitterbuffer signal and
-   * set the #GstRtpJitterBuffer::do-retransmission property on the
+   * set the #GstRtpJitterBuffer:do-retransmission property on the
    * #GstRtpJitterBuffer object instead.
    */
   g_object_class_install_property (gobject_class, PROP_DO_RETRANSMISSION,
@@ -2575,6 +2706,14 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
           "changed to 0 (no limit)", 0, G_MAXINT64, DEFAULT_MAX_TS_OFFSET,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  g_object_class_install_property (gobject_class, PROP_USE_RTSP_BUFFERING,
+      g_param_spec_boolean ("use-rtsp-buffering", "Use RTSP buffering",
+          "Use RTSP buffering in RTP_JITTER_BUFFER_MODE_SLAVE buffer mode",
+          DEFAULT_RTSP_USE_BUFFERING,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+#endif
+
   gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_rtp_bin_change_state);
   gstelement_class->request_new_pad =
       GST_DEBUG_FUNCPTR (gst_rtp_bin_request_new_pad);
@@ -2615,8 +2754,14 @@ gst_rtp_bin_class_init (GstRtpBinClass * klass)
   klass->request_rtp_decoder = GST_DEBUG_FUNCPTR (gst_rtp_bin_request_decoder);
   klass->request_rtcp_encoder = GST_DEBUG_FUNCPTR (gst_rtp_bin_request_encoder);
   klass->request_rtcp_decoder = GST_DEBUG_FUNCPTR (gst_rtp_bin_request_decoder);
+  klass->request_jitterbuffer =
+      GST_DEBUG_FUNCPTR (gst_rtp_bin_request_jitterbuffer);
 
   GST_DEBUG_CATEGORY_INIT (gst_rtp_bin_debug, "rtpbin", 0, "RTP bin");
+
+#ifndef TIZEN_FEATURE_GST_UPSTREAM_AVOID_BUILD_BREAK
+  gst_type_mark_as_plugin_api (GST_RTP_BIN_RTCP_SYNC_TYPE, 0);
+#endif
 }
 
 static void
@@ -2652,6 +2797,9 @@ gst_rtp_bin_init (GstRtpBin * rtpbin)
   rtpbin->max_ts_offset_adjustment = DEFAULT_MAX_TS_OFFSET_ADJUSTMENT;
   rtpbin->max_ts_offset = DEFAULT_MAX_TS_OFFSET;
   rtpbin->max_ts_offset_is_set = FALSE;
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+  rtpbin->use_rtsp_buffering = FALSE;
+#endif
 
   /* some default SDES entries */
   cname = g_strdup_printf ("user%u@host-%x", g_random_int (), g_random_int ());
@@ -2740,6 +2888,13 @@ gst_rtp_bin_set_property (GObject * object, guint prop_id,
   rtpbin = GST_RTP_BIN (object);
 
   switch (prop_id) {
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+    case PROP_USE_RTSP_BUFFERING:
+      GST_RTP_BIN_LOCK (rtpbin);
+      rtpbin->use_rtsp_buffering = g_value_get_boolean (value);
+      GST_RTP_BIN_UNLOCK (rtpbin);
+      break;
+#endif
     case PROP_LATENCY:
       GST_RTP_BIN_LOCK (rtpbin);
       rtpbin->latency_ms = g_value_get_uint (value);
@@ -2909,6 +3064,13 @@ gst_rtp_bin_get_property (GObject * object, guint prop_id,
   rtpbin = GST_RTP_BIN (object);
 
   switch (prop_id) {
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+    case PROP_USE_RTSP_BUFFERING:
+      GST_RTP_BIN_LOCK (rtpbin);
+      g_value_set_boolean (value, rtpbin->use_rtsp_buffering);
+      GST_RTP_BIN_UNLOCK (rtpbin);
+      break;
+#endif
     case PROP_LATENCY:
       GST_RTP_BIN_LOCK (rtpbin);
       g_value_set_uint (value, rtpbin->latency_ms);
@@ -3030,6 +3192,9 @@ gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
       gint min_percent = 100;
       GSList *sessions, *streams;
       GstRtpBinStream *stream;
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+      gboolean buffering_flag = FALSE, update_buffering_status = TRUE;
+#endif
       gboolean change = FALSE, active = FALSE;
       GstClockTime min_out_time;
       GstBufferingMode mode;
@@ -3063,9 +3228,54 @@ gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
                 streams = g_slist_next (streams)) {
               GstRtpBinStream *stream = (GstRtpBinStream *) streams->data;
 
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+              if (rtpbin->use_rtsp_buffering &&
+                  rtpbin->buffer_mode == RTP_JITTER_BUFFER_MODE_SLAVE) {
+                GstPad *temp_pad_src = NULL;
+                GstCaps *temp_caps_src = NULL;
+                GstStructure *caps_structure;
+                const gchar *caps_str_media = NULL;
+                temp_pad_src = gst_element_get_static_pad (stream->buffer, "src");
+                temp_caps_src = gst_pad_get_current_caps (temp_pad_src);
+                GST_DEBUG_OBJECT (bin,
+                    "stream %p percent %d : temp_caps_src=%" GST_PTR_FORMAT,
+                    stream, stream->percent, temp_caps_src);
+                if (temp_caps_src) {
+                  caps_structure = gst_caps_get_structure (temp_caps_src, 0);
+                  caps_str_media =
+                      gst_structure_get_string (caps_structure, "media");
+                  if (caps_str_media != NULL) {
+                    if ((strcmp (caps_str_media, "video") != 0)
+                        && (strcmp (caps_str_media, "audio") != 0)) {
+                      GST_DEBUG_OBJECT (bin,
+                          "Non Audio/Video Stream.. ignoring the same !!");
+                      gst_caps_unref (temp_caps_src);
+                      gst_object_unref (temp_pad_src);
+                      continue;
+                    } else if (stream->percent >= 100) {
+                      /* Most of the time buffering icon displays in rtsp playback.
+                         Optimizing the buffering updation code. Whenever any stream percentage
+                         reaches 100 do not post buffering messages. */
+                      if (stream->prev_percent < 100)
+                        buffering_flag = TRUE;
+                      else
+                        update_buffering_status = FALSE;
+                    }
+                  }
+                  gst_caps_unref (temp_caps_src);
+                }
+                gst_object_unref (temp_pad_src);
+                /* Updating prev stream percentage */
+                stream->prev_percent = stream->percent;
+              } else {
+                GST_DEBUG_OBJECT (bin, "stream %p percent %d", stream,
+                    stream->percent);
+              }
+#else
               GST_DEBUG_OBJECT (bin, "stream %p percent %d", stream,
                   stream->percent);
 
+#endif
               /* find min percent */
               if (min_percent > stream->percent)
                 min_percent = stream->percent;
@@ -3079,6 +3289,10 @@ gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
         }
         GST_DEBUG_OBJECT (bin, "min percent %d", min_percent);
 
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+        if (!(rtpbin->use_rtsp_buffering &&
+            rtpbin->buffer_mode == RTP_JITTER_BUFFER_MODE_SLAVE)) {
+#endif
         if (rtpbin->buffering) {
           if (min_percent == 100) {
             rtpbin->buffering = FALSE;
@@ -3093,16 +3307,35 @@ gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
             change = TRUE;
           }
         }
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+        }
+#endif
         GST_RTP_BIN_UNLOCK (rtpbin);
 
         gst_message_unref (message);
 
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+          if (rtpbin->use_rtsp_buffering &&
+              rtpbin->buffer_mode == RTP_JITTER_BUFFER_MODE_SLAVE) {
+          if (update_buffering_status == FALSE)
+            break;
+          if (buffering_flag) {
+            min_percent = 100;
+            GST_DEBUG_OBJECT (bin, "forcefully change min_percent to 100!!!");
+          }
+        }
+#endif
         /* make a new buffering message with the min value */
         message =
             gst_message_new_buffering (GST_OBJECT_CAST (bin), min_percent);
         gst_message_set_buffering_stats (message, mode, avg_in, avg_out,
             buffering_left);
 
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+        if (rtpbin->use_rtsp_buffering &&
+            rtpbin->buffer_mode == RTP_JITTER_BUFFER_MODE_SLAVE)
+          goto slave_buffering;
+#endif
         if (G_UNLIKELY (change)) {
           GstClock *clock;
           guint64 running_time = 0;
@@ -3148,10 +3381,12 @@ gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
                 streams = g_slist_next (streams)) {
               GstRtpBinStream *stream = (GstRtpBinStream *) streams->data;
               GstElement *element = stream->buffer;
-              guint64 last_out;
+              guint64 last_out = -1;
 
-              g_signal_emit_by_name (element, "set-active", active, offset,
-                  &last_out);
+              if (g_signal_lookup ("set-active", G_OBJECT_TYPE (element)) != 0) {
+                g_signal_emit_by_name (element, "set-active", active, offset,
+                    &last_out);
+              }
 
               if (!active) {
                 g_object_get (element, "percent", &stream->percent, NULL);
@@ -3180,6 +3415,9 @@ gst_rtp_bin_handle_message (GstBin * bin, GstMessage * message)
           GST_RTP_BIN_UNLOCK (rtpbin);
         }
       }
+#ifdef TIZEN_FEATURE_RTSP_MODIFICATION
+slave_buffering:
+#endif
       GST_BIN_CLASS (parent_class)->handle_message (bin, message);
       break;
     }
@@ -3272,23 +3510,16 @@ copy_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
   return TRUE;
 }
 
-/* a new pad (SSRC) was created in @session. This signal is emitted from the
- * payload demuxer. */
 static void
-new_payload_found (GstElement * element, guint pt, GstPad * pad,
-    GstRtpBinStream * stream)
+expose_recv_src_pad (GstRtpBin * rtpbin, GstPad * pad, GstRtpBinStream * stream,
+    guint8 pt)
 {
-  GstRtpBin *rtpbin;
   GstElementClass *klass;
   GstPadTemplate *templ;
   gchar *padname;
   GstPad *gpad;
 
-  rtpbin = stream->bin;
-
-  GST_DEBUG_OBJECT (rtpbin, "new payload pad %u", pt);
-
-  pad = gst_object_ref (pad);
+  gst_object_ref (pad);
 
   if (stream->session->storage) {
     GstElement *fec_decoder =
@@ -3367,6 +3598,21 @@ fec_decoder_link_failed:
   }
 }
 
+/* a new pad (SSRC) was created in @session. This signal is emitted from the
+ * payload demuxer. */
+static void
+new_payload_found (GstElement * element, guint pt, GstPad * pad,
+    GstRtpBinStream * stream)
+{
+  GstRtpBin *rtpbin;
+
+  rtpbin = stream->bin;
+
+  GST_DEBUG_OBJECT (rtpbin, "new payload pad %u", pt);
+
+  expose_recv_src_pad (rtpbin, pad, stream, pt);
+}
+
 static void
 payload_pad_removed (GstElement * element, GstPad * pad,
     GstRtpBinStream * stream)
@@ -3447,7 +3693,7 @@ static void
 payload_type_change (GstElement * element, guint pt, GstRtpBinSession * session)
 {
   GST_DEBUG_OBJECT (session->bin,
-      "emiting signal for pt type changed to %u in session %u", pt,
+      "emitting signal for pt type changed to %u in session %u", pt,
       session->id);
 
   g_signal_emit (session->bin, gst_rtp_bin_signals[SIGNAL_PAYLOAD_TYPE_CHANGE],
@@ -3520,19 +3766,23 @@ new_ssrc_pad_found (GstElement * element, guint ssrc, GstPad * pad,
   gst_object_unref (sinkpad);
   gst_object_unref (srcpad);
 
-  GST_DEBUG_OBJECT (rtpbin, "linking jitterbuffer RTCP");
-  padname = g_strdup_printf ("rtcp_src_%u", ssrc);
-  srcpad = gst_element_get_static_pad (element, padname);
-  g_free (padname);
   sinkpad = gst_element_get_request_pad (stream->buffer, "sink_rtcp");
-  gst_pad_link_full (srcpad, sinkpad, GST_PAD_LINK_CHECK_NOTHING);
-  gst_object_unref (sinkpad);
-  gst_object_unref (srcpad);
+  if (sinkpad) {
+    GST_DEBUG_OBJECT (rtpbin, "linking jitterbuffer RTCP");
+    padname = g_strdup_printf ("rtcp_src_%u", ssrc);
+    srcpad = gst_element_get_static_pad (element, padname);
+    g_free (padname);
+    gst_pad_link_full (srcpad, sinkpad, GST_PAD_LINK_CHECK_NOTHING);
+    gst_object_unref (sinkpad);
+    gst_object_unref (srcpad);
+  }
 
-  /* connect to the RTCP sync signal from the jitterbuffer */
-  GST_DEBUG_OBJECT (rtpbin, "connecting sync signal");
-  stream->buffer_handlesync_sig = g_signal_connect (stream->buffer,
-      "handle-sync", (GCallback) gst_rtp_bin_handle_sync, stream);
+  if (g_signal_lookup ("handle-sync", G_OBJECT_TYPE (stream->buffer)) != 0) {
+    /* connect to the RTCP sync signal from the jitterbuffer */
+    GST_DEBUG_OBJECT (rtpbin, "connecting sync signal");
+    stream->buffer_handlesync_sig = g_signal_connect (stream->buffer,
+        "handle-sync", (GCallback) gst_rtp_bin_handle_sync, stream);
+  }
 
   if (stream->demux) {
     /* connect to the new-pad signal of the payload demuxer, this will expose the
@@ -3550,33 +3800,23 @@ new_ssrc_pad_found (GstElement * element, guint ssrc, GstPad * pad,
     /* connect to the  signal so it can be forwarded. */
     stream->demux_ptchange_sig = g_signal_connect (stream->demux,
         "payload-type-change", (GCallback) payload_type_change, session);
+
+    GST_RTP_SESSION_UNLOCK (session);
+    GST_RTP_BIN_SHUTDOWN_UNLOCK (rtpbin);
   } else {
     /* add rtpjitterbuffer src pad to pads */
-    GstElementClass *klass;
-    GstPadTemplate *templ;
-    gchar *padname;
-    GstPad *gpad, *pad;
+    GstPad *pad;
 
     pad = gst_element_get_static_pad (stream->buffer, "src");
 
-    /* ghost the pad to the parent */
-    klass = GST_ELEMENT_GET_CLASS (rtpbin);
-    templ = gst_element_class_get_pad_template (klass, "recv_rtp_src_%u_%u_%u");
-    padname = g_strdup_printf ("recv_rtp_src_%u_%u_%u",
-        stream->session->id, stream->ssrc, 255);
-    gpad = gst_ghost_pad_new_from_template (padname, pad, templ);
-    g_free (padname);
+    GST_RTP_SESSION_UNLOCK (session);
+    GST_RTP_BIN_SHUTDOWN_UNLOCK (rtpbin);
 
-    gst_pad_set_active (gpad, TRUE);
-    gst_pad_sticky_events_foreach (pad, copy_sticky_events, gpad);
-    gst_element_add_pad (GST_ELEMENT_CAST (rtpbin), gpad);
+    expose_recv_src_pad (rtpbin, pad, stream, 255);
 
     gst_object_unref (pad);
   }
 
-  GST_RTP_SESSION_UNLOCK (session);
-  GST_RTP_BIN_SHUTDOWN_UNLOCK (rtpbin);
-
   return;
 
   /* ERRORS */
@@ -3816,7 +4056,8 @@ create_recv_rtp (GstRtpBin * rtpbin, GstPadTemplate * templ, const gchar * name)
   /* ERRORS */
 no_name:
   {
-    g_warning ("rtpbin: invalid name given");
+    g_warning ("rtpbin: cannot find session id for pad: %s",
+        GST_STR_NULL (name));
     return NULL;
   }
 create_error:
@@ -3991,7 +4232,8 @@ create_recv_rtcp (GstRtpBin * rtpbin, GstPadTemplate * templ,
   /* ERRORS */
 no_name:
   {
-    g_warning ("rtpbin: invalid name given");
+    g_warning ("rtpbin: cannot find session id for pad: %s",
+        GST_STR_NULL (name));
     return NULL;
   }
 create_error:
@@ -4174,8 +4416,9 @@ create_error:
   }
 existing_session:
   {
-    g_warning ("rtpbin: session %u is already a sender", sessid);
-    return FALSE;
+    GST_DEBUG_OBJECT (rtpbin,
+        "skipping src_%i setup, since it is already configured.", sessid);
+    return TRUE;
   }
 pad_failed:
   {
@@ -4319,7 +4562,8 @@ create_send_rtp (GstRtpBin * rtpbin, GstPadTemplate * templ, const gchar * name)
   /* ERRORS */
 no_name:
   {
-    g_warning ("rtpbin: invalid name given");
+    g_warning ("rtpbin: cannot find session id for pad: %s",
+        GST_STR_NULL (name));
     return NULL;
   }
 create_error:
@@ -4473,7 +4717,8 @@ create_send_rtcp (GstRtpBin * rtpbin, GstPadTemplate * templ,
   /* ERRORS */
 no_name:
   {
-    g_warning ("rtpbin: invalid name given");
+    g_warning ("rtpbin: cannot find session id for pad: %s",
+        GST_STR_NULL (name));
     return NULL;
   }
 create_error:
@@ -4522,7 +4767,7 @@ remove_rtcp (GstRtpBin * rtpbin, GstRtpBinSession * session)
 }
 
 /* If the requested name is NULL we should create a name with
- * the session number assuming we want the lowest posible session
+ * the session number assuming we want the lowest possible session
  * with a free pad like the template */
 static gchar *
 gst_rtp_bin_get_free_pad_name (GstElement * element, GstPadTemplate * templ)