--- /dev/null
+/* GStreamer
+ * Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+/*
+ * Unless otherwise indicated, Source Code is licensed under MIT license.
+ * See further explanation attached in License Statement (distributed in the file
+ * LICENSE).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+/* Element-Checklist-Version: 5 */
+
+/**
+ * SECTION:element-rdtmanager
+ *
+ * <refsect2>
+ * <para>
+ * A simple RTP session manager used internally by rtspsrc.
+ * </para>
+ * </refsect2>
+ *
+ * Last reviewed on 2006-06-20 (0.10.4)
+ */
+
+/* #define HAVE_RTCP */
+
+#include "rdtmanager.h"
+
+GST_DEBUG_CATEGORY_STATIC (rdtmanager_debug);
+#define GST_CAT_DEFAULT (rdtmanager_debug)
+
+/* elementfactory information */
+static const GstElementDetails rdtmanager_details =
+GST_ELEMENT_DETAILS ("RTP Decoder",
+ "Codec/Parser/Network",
+ "Accepts raw RTP and RTCP packets and sends them forward",
+ "Wim Taymans <wim@fluendo.com>");
+
+/* GstRDTManager signals and args */
+enum
+{
+ SIGNAL_REQUEST_PT_MAP,
+ SIGNAL_CLEAR_PT_MAP,
+ LAST_SIGNAL
+};
+
+#define DEFAULT_LATENCY_MS 200
+
+enum
+{
+ PROP_0,
+ PROP_LATENCY
+};
+
+static GstStaticPadTemplate gst_rdt_manager_recv_rtp_sink_template =
+GST_STATIC_PAD_TEMPLATE ("recv_rtp_sink_%d",
+ GST_PAD_SINK,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS ("application/x-rtp")
+ );
+
+static GstStaticPadTemplate gst_rdt_manager_recv_rtcp_sink_template =
+GST_STATIC_PAD_TEMPLATE ("recv_rtcp_sink_%d",
+ GST_PAD_SINK,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS ("application/x-rtcp")
+ );
+
+static GstStaticPadTemplate gst_rdt_manager_recv_rtp_src_template =
+GST_STATIC_PAD_TEMPLATE ("recv_rtp_src_%d_%d_%d",
+ GST_PAD_SRC,
+ GST_PAD_SOMETIMES,
+ GST_STATIC_CAPS ("application/x-rtp")
+ );
+
+static GstStaticPadTemplate gst_rdt_manager_rtcp_src_template =
+GST_STATIC_PAD_TEMPLATE ("rtcp_src_%d",
+ GST_PAD_SRC,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS ("application/x-rtcp")
+ );
+
+static void gst_rdt_manager_finalize (GObject * object);
+static void gst_rdt_manager_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_rdt_manager_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstClock *gst_rdt_manager_provide_clock (GstElement * element);
+static GstStateChangeReturn gst_rdt_manager_change_state (GstElement * element,
+ GstStateChange transition);
+static GstPad *gst_rdt_manager_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * name);
+static void gst_rdt_manager_release_pad (GstElement * element, GstPad * pad);
+
+static GstFlowReturn gst_rdt_manager_chain_rtp (GstPad * pad,
+ GstBuffer * buffer);
+static GstFlowReturn gst_rdt_manager_chain_rtcp (GstPad * pad,
+ GstBuffer * buffer);
+
+
+/* Manages the receiving end of the packets.
+ *
+ * There is one such structure for each RTP session (audio/video/...).
+ * We get the RTP/RTCP packets and stuff them into the session manager.
+ */
+struct _GstRDTManagerSession
+{
+ /* session id */
+ gint id;
+ /* the parent bin */
+ GstRDTManager *dec;
+
+ gboolean active;
+ /* we only support one ssrc and one pt */
+ guint32 ssrc;
+ guint8 pt;
+ GstCaps *caps;
+
+ /* the pads of the session */
+ GstPad *recv_rtp_sink;
+ GstPad *recv_rtp_src;
+ GstPad *recv_rtcp_sink;
+ GstPad *rtcp_src;
+};
+
+/* find a session with the given id */
+static GstRDTManagerSession *
+find_session_by_id (GstRDTManager * rdtmanager, gint id)
+{
+ GSList *walk;
+
+ for (walk = rdtmanager->sessions; walk; walk = g_slist_next (walk)) {
+ GstRDTManagerSession *sess = (GstRDTManagerSession *) walk->data;
+
+ if (sess->id == id)
+ return sess;
+ }
+ return NULL;
+}
+
+/* create a session with the given id */
+static GstRDTManagerSession *
+create_session (GstRDTManager * rdtmanager, gint id)
+{
+ GstRDTManagerSession *sess;
+
+ sess = g_new0 (GstRDTManagerSession, 1);
+ sess->id = id;
+ sess->dec = rdtmanager;
+ rdtmanager->sessions = g_slist_prepend (rdtmanager->sessions, sess);
+
+ return sess;
+}
+
+static void
+free_session (GstRDTManagerSession * session)
+{
+ g_free (session);
+}
+
+static guint gst_rdt_manager_signals[LAST_SIGNAL] = { 0 };
+
+GST_BOILERPLATE (GstRDTManager, gst_rdt_manager, GstElement, GST_TYPE_ELEMENT);
+
+static void
+gst_rdt_manager_base_init (gpointer klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ /* sink pads */
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rdt_manager_recv_rtp_sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rdt_manager_recv_rtcp_sink_template));
+ /* src pads */
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rdt_manager_recv_rtp_src_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_rdt_manager_rtcp_src_template));
+
+ gst_element_class_set_details (element_class, &rdtmanager_details);
+}
+
+/* BOXED:UINT,UINT */
+#define g_marshal_value_peek_uint(v) g_value_get_uint (v)
+
+void
+gst_rdt_manager_marshal_BOXED__UINT_UINT (GClosure * closure,
+ GValue * return_value,
+ guint n_param_values,
+ const GValue * param_values,
+ gpointer invocation_hint, gpointer marshal_data)
+{
+ typedef gpointer (*GMarshalFunc_BOXED__UINT_UINT) (gpointer data1,
+ guint arg_1, guint arg_2, gpointer data2);
+ register GMarshalFunc_BOXED__UINT_UINT callback;
+ register GCClosure *cc = (GCClosure *) closure;
+ register gpointer data1, data2;
+ gpointer v_return;
+
+ g_return_if_fail (return_value != NULL);
+ g_return_if_fail (n_param_values == 3);
+
+ if (G_CCLOSURE_SWAP_DATA (closure)) {
+ data1 = closure->data;
+ data2 = g_value_peek_pointer (param_values + 0);
+ } else {
+ data1 = g_value_peek_pointer (param_values + 0);
+ data2 = closure->data;
+ }
+ callback =
+ (GMarshalFunc_BOXED__UINT_UINT) (marshal_data ? marshal_data : cc->
+ callback);
+
+ v_return = callback (data1,
+ g_marshal_value_peek_uint (param_values + 1),
+ g_marshal_value_peek_uint (param_values + 2), data2);
+
+ g_value_take_boxed (return_value, v_return);
+}
+
+static void
+gst_rdt_manager_class_init (GstRDTManagerClass * g_class)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+ GstRDTManagerClass *klass;
+
+ klass = (GstRDTManagerClass *) g_class;
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ gobject_class->finalize = gst_rdt_manager_finalize;
+ gobject_class->set_property = gst_rdt_manager_set_property;
+ gobject_class->get_property = gst_rdt_manager_get_property;
+
+ g_object_class_install_property (gobject_class, PROP_LATENCY,
+ g_param_spec_uint ("latency", "Buffer latency in ms",
+ "Amount of ms to buffer", 0, G_MAXUINT, DEFAULT_LATENCY_MS,
+ G_PARAM_READWRITE));
+
+ /**
+ * GstRDTManager::request-pt-map:
+ * @rdtmanager: the object which received the signal
+ * @session: the session
+ * @pt: the pt
+ *
+ * Request the payload type as #GstCaps for @pt in @session.
+ */
+ gst_rdt_manager_signals[SIGNAL_REQUEST_PT_MAP] =
+ g_signal_new ("request-pt-map", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRDTManagerClass, request_pt_map),
+ NULL, NULL, gst_rdt_manager_marshal_BOXED__UINT_UINT, GST_TYPE_CAPS, 2,
+ G_TYPE_UINT, G_TYPE_UINT);
+
+ gst_rdt_manager_signals[SIGNAL_CLEAR_PT_MAP] =
+ g_signal_new ("clear-pt-map", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstRDTManagerClass, clear_pt_map),
+ NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
+
+ gstelement_class->provide_clock =
+ GST_DEBUG_FUNCPTR (gst_rdt_manager_provide_clock);
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_rdt_manager_change_state);
+ gstelement_class->request_new_pad =
+ GST_DEBUG_FUNCPTR (gst_rdt_manager_request_new_pad);
+ gstelement_class->release_pad =
+ GST_DEBUG_FUNCPTR (gst_rdt_manager_release_pad);
+
+ GST_DEBUG_CATEGORY_INIT (rdtmanager_debug, "rdtmanager", 0, "RTP decoder");
+}
+
+static void
+gst_rdt_manager_init (GstRDTManager * rdtmanager, GstRDTManagerClass * klass)
+{
+ rdtmanager->provided_clock = gst_system_clock_obtain ();
+ rdtmanager->latency = DEFAULT_LATENCY_MS;
+}
+
+static void
+gst_rdt_manager_finalize (GObject * object)
+{
+ GstRDTManager *rdtmanager;
+
+ rdtmanager = GST_RDT_MANAGER (object);
+
+ g_slist_foreach (rdtmanager->sessions, (GFunc) free_session, NULL);
+ g_slist_free (rdtmanager->sessions);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_rdt_manager_query_src (GstPad * pad, GstQuery * query)
+{
+ GstRDTManager *rdtmanager;
+ gboolean res;
+
+ rdtmanager = GST_RDT_MANAGER (GST_PAD_PARENT (pad));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_LATENCY:
+ {
+ /* we pretend to be live with a 3 second latency */
+ gst_query_set_latency (query, TRUE, 3 * GST_SECOND, -1);
+ res = TRUE;
+ break;
+ }
+ default:
+ res = gst_pad_query_default (pad, query);
+ break;
+ }
+ return res;
+}
+
+static GstFlowReturn
+gst_rdt_manager_chain_rtp (GstPad * pad, GstBuffer * buffer)
+{
+ GstFlowReturn res;
+ GstRDTManager *rdtmanager;
+ GstRDTManagerSession *session;
+ guint32 ssrc;
+ guint8 pt;
+
+ rdtmanager = GST_RDT_MANAGER (GST_PAD_PARENT (pad));
+
+ GST_DEBUG_OBJECT (rdtmanager, "got rtp packet");
+
+ ssrc = 0;
+ pt = 0;
+
+ GST_DEBUG_OBJECT (rdtmanager, "SSRC %08x, PT %d", ssrc, pt);
+
+ /* find session */
+ session = gst_pad_get_element_private (pad);
+
+ /* see if we have the pad */
+ if (!session->active) {
+ GstPadTemplate *templ;
+ GstElementClass *klass;
+ gchar *name;
+ GstCaps *caps;
+ GValue ret = { 0 };
+ GValue args[3] = { {0}
+ , {0}
+ , {0}
+ };
+
+ GST_DEBUG_OBJECT (rdtmanager, "creating stream");
+
+ session->ssrc = ssrc;
+ session->pt = pt;
+
+ /* get pt map */
+ g_value_init (&args[0], GST_TYPE_ELEMENT);
+ g_value_set_object (&args[0], rdtmanager);
+ g_value_init (&args[1], G_TYPE_UINT);
+ g_value_set_uint (&args[1], session->id);
+ g_value_init (&args[2], G_TYPE_UINT);
+ g_value_set_uint (&args[2], pt);
+
+ g_value_init (&ret, GST_TYPE_CAPS);
+ g_value_set_boxed (&ret, NULL);
+
+ g_signal_emitv (args, gst_rdt_manager_signals[SIGNAL_REQUEST_PT_MAP], 0,
+ &ret);
+
+ caps = (GstCaps *) g_value_get_boxed (&ret);
+
+ name = g_strdup_printf ("recv_rtp_src_%d_%u_%d", session->id, ssrc, pt);
+ klass = GST_ELEMENT_GET_CLASS (rdtmanager);
+ templ = gst_element_class_get_pad_template (klass, "recv_rtp_src_%d_%d_%d");
+ session->recv_rtp_src = gst_pad_new_from_template (templ, name);
+ g_free (name);
+
+ gst_pad_set_caps (session->recv_rtp_src, caps);
+
+ gst_pad_set_element_private (session->recv_rtp_src, session);
+ gst_pad_set_query_function (session->recv_rtp_src,
+ gst_rdt_manager_query_src);
+ gst_pad_set_active (session->recv_rtp_src, TRUE);
+ gst_element_add_pad (GST_ELEMENT_CAST (rdtmanager), session->recv_rtp_src);
+
+ session->active = TRUE;
+ }
+
+ gst_buffer_set_caps (buffer, GST_PAD_CAPS (session->recv_rtp_src));
+
+ res = gst_pad_push (session->recv_rtp_src, buffer);
+
+ return res;
+}
+
+static GstFlowReturn
+gst_rdt_manager_chain_rtcp (GstPad * pad, GstBuffer * buffer)
+{
+ GstRDTManager *src;
+
+#ifdef HAVE_RTCP
+ gboolean valid;
+ GstRTCPPacket packet;
+ gboolean more;
+#endif
+
+ src = GST_RDT_MANAGER (GST_PAD_PARENT (pad));
+
+ GST_DEBUG_OBJECT (src, "got rtcp packet");
+
+#ifdef HAVE_RTCP
+ valid = gst_rtcp_buffer_validate (buffer);
+ if (!valid)
+ goto bad_packet;
+
+ /* position on first packet */
+ more = gst_rtcp_buffer_get_first_packet (buffer, &packet);
+ while (more) {
+ switch (gst_rtcp_packet_get_type (&packet)) {
+ case GST_RTCP_TYPE_SR:
+ {
+ guint32 ssrc, rtptime, packet_count, octet_count;
+ guint64 ntptime;
+ guint count, i;
+
+ gst_rtcp_packet_sr_get_sender_info (&packet, &ssrc, &ntptime, &rtptime,
+ &packet_count, &octet_count);
+
+ GST_DEBUG_OBJECT (src,
+ "got SR packet: SSRC %08x, NTP %" G_GUINT64_FORMAT
+ ", RTP %u, PC %u, OC %u", ssrc, ntptime, rtptime, packet_count,
+ octet_count);
+
+ count = gst_rtcp_packet_get_rb_count (&packet);
+ for (i = 0; i < count; i++) {
+ guint32 ssrc, exthighestseq, jitter, lsr, dlsr;
+ guint8 fractionlost;
+ gint32 packetslost;
+
+ gst_rtcp_packet_get_rb (&packet, i, &ssrc, &fractionlost,
+ &packetslost, &exthighestseq, &jitter, &lsr, &dlsr);
+
+ GST_DEBUG_OBJECT (src, "got RB packet %d: SSRC %08x, FL %u"
+ ", PL %u, HS %u, JITTER %u, LSR %u, DLSR %u", ssrc, fractionlost,
+ packetslost, exthighestseq, jitter, lsr, dlsr);
+ }
+ break;
+ }
+ case GST_RTCP_TYPE_RR:
+ {
+ guint32 ssrc;
+ guint count, i;
+
+ ssrc = gst_rtcp_packet_rr_get_ssrc (&packet);
+
+ GST_DEBUG_OBJECT (src, "got RR packet: SSRC %08x", ssrc);
+
+ count = gst_rtcp_packet_get_rb_count (&packet);
+ for (i = 0; i < count; i++) {
+ guint32 ssrc, exthighestseq, jitter, lsr, dlsr;
+ guint8 fractionlost;
+ gint32 packetslost;
+
+ gst_rtcp_packet_get_rb (&packet, i, &ssrc, &fractionlost,
+ &packetslost, &exthighestseq, &jitter, &lsr, &dlsr);
+
+ GST_DEBUG_OBJECT (src, "got RB packet %d: SSRC %08x, FL %u"
+ ", PL %u, HS %u, JITTER %u, LSR %u, DLSR %u", ssrc, fractionlost,
+ packetslost, exthighestseq, jitter, lsr, dlsr);
+ }
+ break;
+ }
+ case GST_RTCP_TYPE_SDES:
+ {
+ guint chunks, i, j;
+ gboolean more_chunks, more_items;
+
+ chunks = gst_rtcp_packet_sdes_get_chunk_count (&packet);
+ GST_DEBUG_OBJECT (src, "got SDES packet with %d chunks", chunks);
+
+ more_chunks = gst_rtcp_packet_sdes_first_chunk (&packet);
+ i = 0;
+ while (more_chunks) {
+ guint32 ssrc;
+
+ ssrc = gst_rtcp_packet_sdes_get_ssrc (&packet);
+
+ GST_DEBUG_OBJECT (src, "chunk %d, SSRC %08x", i, ssrc);
+
+ more_items = gst_rtcp_packet_sdes_first_item (&packet);
+ j = 0;
+ while (more_items) {
+ GstRTCPSDESType type;
+ guint8 len;
+ gchar *data;
+
+ gst_rtcp_packet_sdes_get_item (&packet, &type, &len, &data);
+
+ GST_DEBUG_OBJECT (src, "item %d, type %d, len %d, data %s", j,
+ type, len, data);
+
+ more_items = gst_rtcp_packet_sdes_next_item (&packet);
+ j++;
+ }
+ more_chunks = gst_rtcp_packet_sdes_next_chunk (&packet);
+ i++;
+ }
+ break;
+ }
+ case GST_RTCP_TYPE_BYE:
+ {
+ guint count, i;
+ gchar *reason;
+
+ reason = gst_rtcp_packet_bye_get_reason (&packet);
+ GST_DEBUG_OBJECT (src, "got BYE packet (reason: %s)",
+ GST_STR_NULL (reason));
+ g_free (reason);
+
+ count = gst_rtcp_packet_bye_get_ssrc_count (&packet);
+ for (i = 0; i < count; i++) {
+ guint32 ssrc;
+
+
+ ssrc = gst_rtcp_packet_bye_get_nth_ssrc (&packet, i);
+
+ GST_DEBUG_OBJECT (src, "SSRC: %08x", ssrc);
+ }
+ break;
+ }
+ case GST_RTCP_TYPE_APP:
+ GST_DEBUG_OBJECT (src, "got APP packet");
+ break;
+ default:
+ GST_WARNING_OBJECT (src, "got unknown RTCP packet");
+ break;
+ }
+ more = gst_rtcp_packet_move_to_next (&packet);
+ }
+ gst_buffer_unref (buffer);
+ return GST_FLOW_OK;
+
+bad_packet:
+ {
+ GST_WARNING_OBJECT (src, "got invalid RTCP packet");
+ return GST_FLOW_OK;
+ }
+#else
+ return GST_FLOW_OK;
+#endif
+}
+
+static void
+gst_rdt_manager_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstRDTManager *src;
+
+ src = GST_RDT_MANAGER (object);
+
+ switch (prop_id) {
+ case PROP_LATENCY:
+ src->latency = g_value_get_uint (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_rdt_manager_get_property (GObject * object, guint prop_id, GValue * value,
+ GParamSpec * pspec)
+{
+ GstRDTManager *src;
+
+ src = GST_RDT_MANAGER (object);
+
+ switch (prop_id) {
+ case PROP_LATENCY:
+ g_value_set_uint (value, src->latency);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstClock *
+gst_rdt_manager_provide_clock (GstElement * element)
+{
+ GstRDTManager *rdtmanager;
+
+ rdtmanager = GST_RDT_MANAGER (element);
+
+ return GST_CLOCK_CAST (gst_object_ref (rdtmanager->provided_clock));
+}
+
+static GstStateChangeReturn
+gst_rdt_manager_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstRDTManager *rdtmanager;
+
+ rdtmanager = GST_RDT_MANAGER (element);
+
+ switch (transition) {
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ /* we're NO_PREROLL when going to PAUSED */
+ ret = GST_STATE_CHANGE_NO_PREROLL;
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+/* Create a pad for receiving RTP for the session in @name
+ */
+static GstPad *
+create_recv_rtp (GstRDTManager * rdtmanager, GstPadTemplate * templ,
+ const gchar * name)
+{
+ guint sessid;
+ GstRDTManagerSession *session;
+
+ /* first get the session number */
+ if (name == NULL || sscanf (name, "recv_rtp_sink_%d", &sessid) != 1)
+ goto no_name;
+
+ GST_DEBUG_OBJECT (rdtmanager, "finding session %d", sessid);
+
+ /* get or create session */
+ session = find_session_by_id (rdtmanager, sessid);
+ if (!session) {
+ GST_DEBUG_OBJECT (rdtmanager, "creating session %d", sessid);
+ /* create session now */
+ session = create_session (rdtmanager, sessid);
+ if (session == NULL)
+ goto create_error;
+ }
+ /* check if pad was requested */
+ if (session->recv_rtp_sink != NULL)
+ goto existed;
+
+ GST_DEBUG_OBJECT (rdtmanager, "getting RTP sink pad");
+
+ session->recv_rtp_sink = gst_pad_new_from_template (templ, name);
+ gst_pad_set_element_private (session->recv_rtp_sink, session);
+ gst_pad_set_chain_function (session->recv_rtp_sink,
+ gst_rdt_manager_chain_rtp);
+ gst_pad_set_active (session->recv_rtp_sink, TRUE);
+ gst_element_add_pad (GST_ELEMENT_CAST (rdtmanager), session->recv_rtp_sink);
+
+ return session->recv_rtp_sink;
+
+ /* ERRORS */
+no_name:
+ {
+ g_warning ("rdtmanager: invalid name given");
+ return NULL;
+ }
+create_error:
+ {
+ /* create_session already warned */
+ return NULL;
+ }
+existed:
+ {
+ g_warning ("rdtmanager: recv_rtp pad already requested for session %d",
+ sessid);
+ return NULL;
+ }
+}
+
+/* Create a pad for receiving RTCP for the session in @name
+ */
+static GstPad *
+create_recv_rtcp (GstRDTManager * rdtmanager, GstPadTemplate * templ,
+ const gchar * name)
+{
+ guint sessid;
+ GstRDTManagerSession *session;
+
+ /* first get the session number */
+ if (name == NULL || sscanf (name, "recv_rtcp_sink_%d", &sessid) != 1)
+ goto no_name;
+
+ GST_DEBUG_OBJECT (rdtmanager, "finding session %d", sessid);
+
+ /* get the session, it must exist or we error */
+ session = find_session_by_id (rdtmanager, sessid);
+ if (!session)
+ goto no_session;
+
+ /* check if pad was requested */
+ if (session->recv_rtcp_sink != NULL)
+ goto existed;
+
+ GST_DEBUG_OBJECT (rdtmanager, "getting RTCP sink pad");
+
+ session->recv_rtcp_sink = gst_pad_new_from_template (templ, name);
+ gst_pad_set_element_private (session->recv_rtp_sink, session);
+ gst_pad_set_chain_function (session->recv_rtcp_sink,
+ gst_rdt_manager_chain_rtcp);
+ gst_pad_set_active (session->recv_rtcp_sink, TRUE);
+ gst_element_add_pad (GST_ELEMENT_CAST (rdtmanager), session->recv_rtcp_sink);
+
+ return session->recv_rtcp_sink;
+
+ /* ERRORS */
+no_name:
+ {
+ g_warning ("rdtmanager: invalid name given");
+ return NULL;
+ }
+no_session:
+ {
+ g_warning ("rdtmanager: no session with id %d", sessid);
+ return NULL;
+ }
+existed:
+ {
+ g_warning ("rdtmanager: recv_rtcp pad already requested for session %d",
+ sessid);
+ return NULL;
+ }
+}
+
+/* Create a pad for sending RTCP for the session in @name
+ */
+static GstPad *
+create_rtcp (GstRDTManager * rdtmanager, GstPadTemplate * templ,
+ const gchar * name)
+{
+ guint sessid;
+ GstRDTManagerSession *session;
+
+ /* first get the session number */
+ if (name == NULL || sscanf (name, "rtcp_src_%d", &sessid) != 1)
+ goto no_name;
+
+ /* get or create session */
+ session = find_session_by_id (rdtmanager, sessid);
+ if (!session)
+ goto no_session;
+
+ /* check if pad was requested */
+ if (session->rtcp_src != NULL)
+ goto existed;
+
+ session->rtcp_src = gst_pad_new_from_template (templ, name);
+ gst_pad_set_active (session->rtcp_src, TRUE);
+ gst_element_add_pad (GST_ELEMENT_CAST (rdtmanager), session->rtcp_src);
+
+ return session->rtcp_src;
+
+ /* ERRORS */
+no_name:
+ {
+ g_warning ("rdtmanager: invalid name given");
+ return NULL;
+ }
+no_session:
+ {
+ g_warning ("rdtmanager: session with id %d does not exist", sessid);
+ return NULL;
+ }
+existed:
+ {
+ g_warning ("rdtmanager: rtcp_src pad already requested for session %d",
+ sessid);
+ return NULL;
+ }
+}
+
+/*
+ */
+static GstPad *
+gst_rdt_manager_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * name)
+{
+ GstRDTManager *rdtmanager;
+ GstElementClass *klass;
+ GstPad *result;
+
+ g_return_val_if_fail (templ != NULL, NULL);
+ g_return_val_if_fail (GST_IS_RDT_MANAGER (element), NULL);
+
+ rdtmanager = GST_RDT_MANAGER (element);
+ klass = GST_ELEMENT_GET_CLASS (element);
+
+ /* figure out the template */
+ if (templ == gst_element_class_get_pad_template (klass, "recv_rtp_sink_%d")) {
+ result = create_recv_rtp (rdtmanager, templ, name);
+ } else if (templ == gst_element_class_get_pad_template (klass,
+ "recv_rtcp_sink_%d")) {
+ result = create_recv_rtcp (rdtmanager, templ, name);
+ } else if (templ == gst_element_class_get_pad_template (klass, "rtcp_src_%d")) {
+ result = create_rtcp (rdtmanager, templ, name);
+ } else
+ goto wrong_template;
+
+ return result;
+
+ /* ERRORS */
+wrong_template:
+ {
+ g_warning ("rdtmanager: this is not our template");
+ return NULL;
+ }
+}
+
+static void
+gst_rdt_manager_release_pad (GstElement * element, GstPad * pad)
+{
+}
+
+gboolean
+gst_rdt_manager_plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "rdtmanager",
+ GST_RANK_MARGINAL, GST_TYPE_RDT_MANAGER);
+}
projects / platform / upstream / gstreamer.git / commitdiff