gstreamer/tests/examples/rtp/server-rtpbundle.c

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/* GStreamer
* Copyright (C) 2016 Igalia S.L
* @author Philippe Normand <philn@igalia.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <gst/gst.h>
/*
* An bundling RTP server
* creates two sessions and streams audio on one, video on the other, with RTCP
* on both sessions. The destination is 127.0.0.1.
*
* The RTP streams are bundled to a single outgoing connection. Same for the RTCP streams.
*
* .-------. .-------. .-------. .------------. .------.
* |audiots| |alawenc| |pcmapay| | rtpbin | |funnel|
* | src->sink src->sink src->send_rtp_0 send_rtp_0--->sink_0 | .-------.
* '-------' '-------' '-------' | | | | |udpsink|
* | | | src->sink |
* .-------. .---------. | | | | '-------'
* |videots| | vrawpay | | | | |
* | src------------>sink src->send_rtp_1 send_rtp_1--->sink_1 |
* '-------' '---------' | | '------'
* | |
* .------. | |
* |udpsrc| | | .------.
* | src->recv_rtcp_0 | |funnel|
* '------' | send_rtcp_0-->sink_0 | .-------.
* | | | | |udpsink|
* .------. | | | src->sink |
* |udpsrc| | | | | '-------'
* | src->recv_rtcp_1 | | |
* '------' | send_rtcp_1-->sink_1 |
* '------------' '------'
*
*/
static GstElement *
create_pipeline (void)
{
GstElement *pipeline, *rtpbin, *audiosrc, *audio_encoder,
*audio_rtppayloader, *sendrtp_udpsink,
*send_rtcp_udpsink, *sendrtcp_funnel, *sendrtp_funnel;
GstElement *videosrc, *video_rtppayloader, *time_overlay;
gint rtp_udp_port = 5001;
gint rtcp_udp_port = 5002;
gint recv_audio_rtcp_port = 5003;
gint recv_video_rtcp_port = 5004;
GstElement *audio_rtcp_udpsrc, *video_rtcp_udpsrc;
pipeline = gst_pipeline_new (NULL);
rtpbin = gst_element_factory_make ("rtpbin", NULL);
audiosrc = gst_element_factory_make ("audiotestsrc", NULL);
g_object_set (audiosrc, "is-live", TRUE, NULL);
audio_encoder = gst_element_factory_make ("alawenc", NULL);
audio_rtppayloader = gst_element_factory_make ("rtppcmapay", NULL);
g_object_set (audio_rtppayloader, "pt", 96, NULL);
videosrc = gst_element_factory_make ("videotestsrc", NULL);
g_object_set (videosrc, "is-live", TRUE, NULL);
time_overlay = gst_element_factory_make ("timeoverlay", NULL);
video_rtppayloader = gst_element_factory_make ("rtpvrawpay", NULL);
g_object_set (video_rtppayloader, "pt", 100, NULL);
/* muxed rtcp */
sendrtcp_funnel = gst_element_factory_make ("funnel", "send_rtcp_funnel");
send_rtcp_udpsink = gst_element_factory_make ("udpsink", NULL);
g_object_set (send_rtcp_udpsink, "host", "127.0.0.1", NULL);
g_object_set (send_rtcp_udpsink, "port", rtcp_udp_port, NULL);
g_object_set (send_rtcp_udpsink, "sync", FALSE, NULL);
g_object_set (send_rtcp_udpsink, "async", FALSE, NULL);
/* outgoing bundled stream */
sendrtp_funnel = gst_element_factory_make ("funnel", "send_rtp_funnel");
sendrtp_udpsink = gst_element_factory_make ("udpsink", NULL);
g_object_set (sendrtp_udpsink, "host", "127.0.0.1", NULL);
g_object_set (sendrtp_udpsink, "port", rtp_udp_port, NULL);
g_object_set (sendrtp_udpsink, "sync", FALSE, NULL);
g_object_set (sendrtp_udpsink, "async", FALSE, NULL);
gst_bin_add_many (GST_BIN (pipeline), rtpbin, audiosrc, audio_encoder,
audio_rtppayloader, sendrtp_udpsink, send_rtcp_udpsink,
sendrtp_funnel, sendrtcp_funnel, videosrc, video_rtppayloader, NULL);
if (time_overlay)
gst_bin_add (GST_BIN (pipeline), time_overlay);
gst_element_link_many (audiosrc, audio_encoder, audio_rtppayloader, NULL);
gst_element_link_pads (audio_rtppayloader, "src", rtpbin, "send_rtp_sink_0");
if (time_overlay) {
gst_element_link_many (videosrc, time_overlay, video_rtppayloader, NULL);
} else {
gst_element_link (videosrc, video_rtppayloader);
}
gst_element_link_pads (video_rtppayloader, "src", rtpbin, "send_rtp_sink_1");
gst_element_link_pads (sendrtp_funnel, "src", sendrtp_udpsink, "sink");
gst_element_link_pads (rtpbin, "send_rtp_src_0", sendrtp_funnel, "sink_%u");
gst_element_link_pads (rtpbin, "send_rtp_src_1", sendrtp_funnel, "sink_%u");
gst_element_link_pads (sendrtcp_funnel, "src", send_rtcp_udpsink, "sink");
gst_element_link_pads (rtpbin, "send_rtcp_src_0", sendrtcp_funnel, "sink_%u");
gst_element_link_pads (rtpbin, "send_rtcp_src_1", sendrtcp_funnel, "sink_%u");
audio_rtcp_udpsrc = gst_element_factory_make ("udpsrc", NULL);
g_object_set (audio_rtcp_udpsrc, "port", recv_audio_rtcp_port, NULL);
video_rtcp_udpsrc = gst_element_factory_make ("udpsrc", NULL);
g_object_set (video_rtcp_udpsrc, "port", recv_video_rtcp_port, NULL);
gst_bin_add_many (GST_BIN (pipeline), audio_rtcp_udpsrc, video_rtcp_udpsrc,
NULL);
gst_element_link_pads (audio_rtcp_udpsrc, "src", rtpbin, "recv_rtcp_sink_0");
gst_element_link_pads (video_rtcp_udpsrc, "src", rtpbin, "recv_rtcp_sink_1");
return pipeline;
}
/*
* Used to generate informative messages during pipeline startup
*/
static void
cb_state (GstBus * bus, GstMessage * message, gpointer data)
{
GstObject *pipe = GST_OBJECT (data);
GstState old, new, pending;
gst_message_parse_state_changed (message, &old, &new, &pending);
if (message->src == pipe) {
g_print ("Pipeline %s changed state from %s to %s\n",
GST_OBJECT_NAME (message->src),
gst_element_state_get_name (old), gst_element_state_get_name (new));
}
}
int
main (int argc, char **argv)
{
GstElement *pipe;
GstBus *bus;
GMainLoop *loop;
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
pipe = create_pipeline ();
bus = gst_element_get_bus (pipe);
g_signal_connect (bus, "message::state-changed", G_CALLBACK (cb_state), pipe);
gst_bus_add_signal_watch (bus);
gst_object_unref (bus);
g_print ("starting server pipeline\n");
gst_element_set_state (pipe, GST_STATE_PLAYING);
g_main_loop_run (loop);
g_print ("stopping server pipeline\n");
gst_element_set_state (pipe, GST_STATE_NULL);
gst_object_unref (pipe);
g_main_loop_unref (loop);
return 0;
}