gstreamer/examples/test-netclock-client.c

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/* GStreamer
* Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
* Copyright (C) 2014 Jan Schmidt <jan@centricular.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 <stdlib.h>
#include <gst/gst.h>
#include <gst/net/gstnet.h>
#define PLAYBACK_DELAY_MS 40
static void
source_created (GstElement * pipe, GstElement * source)
{
g_object_set (source, "latency", PLAYBACK_DELAY_MS,
"ntp-time-source", 3, "buffer-mode", 4, "ntp-sync", TRUE, NULL);
}
static gboolean
message (GstBus * bus, GstMessage * message, gpointer user_data)
{
GMainLoop *loop = user_data;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:{
GError *err = NULL;
gchar *name, *debug = NULL;
name = gst_object_get_path_string (message->src);
gst_message_parse_error (message, &err, &debug);
g_printerr ("ERROR: from element %s: %s\n", name, err->message);
if (debug != NULL)
g_printerr ("Additional debug info:\n%s\n", debug);
g_error_free (err);
g_free (debug);
g_free (name);
g_main_loop_quit (loop);
break;
}
case GST_MESSAGE_WARNING:{
GError *err = NULL;
gchar *name, *debug = NULL;
name = gst_object_get_path_string (message->src);
gst_message_parse_warning (message, &err, &debug);
g_printerr ("ERROR: from element %s: %s\n", name, err->message);
if (debug != NULL)
g_printerr ("Additional debug info:\n%s\n", debug);
g_error_free (err);
g_free (debug);
g_free (name);
break;
}
case GST_MESSAGE_EOS:
g_print ("Got EOS\n");
g_main_loop_quit (loop);
break;
default:
break;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
GstClock *net_clock;
gchar *server;
gint clock_port;
GstElement *pipe;
GMainLoop *loop;
gst_init (&argc, &argv);
if (argc < 2) {
g_print ("usage: %s rtsp://URI clock-IP clock-PORT\n"
"example: %s rtsp://localhost:8554/test 127.0.0.1 8554\n",
argv[0], argv[0]);
return -1;
}
server = argv[2];
clock_port = atoi (argv[3]);
net_clock = gst_net_client_clock_new ("net_clock", server, clock_port, 0);
if (net_clock == NULL) {
g_print ("Failed to create net clock client for %s:%d\n",
server, clock_port);
return 1;
}
/* Wait for the clock to stabilise */
gst_clock_wait_for_sync (net_clock, GST_CLOCK_TIME_NONE);
loop = g_main_loop_new (NULL, FALSE);
pipe = gst_element_factory_make ("playbin", NULL);
g_object_set (pipe, "uri", argv[1], NULL);
g_signal_connect (pipe, "source-setup", G_CALLBACK (source_created), NULL);
gst_pipeline_use_clock (GST_PIPELINE (pipe), net_clock);
/* Set this high enough so that it's higher than the minimum latency
* on all receivers */
gst_pipeline_set_latency (GST_PIPELINE (pipe), 500 * GST_MSECOND);
if (gst_element_set_state (pipe,
GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
g_print ("Failed to set state to PLAYING\n");
goto exit;
};
gst_bus_add_signal_watch (GST_ELEMENT_BUS (pipe));
g_signal_connect (GST_ELEMENT_BUS (pipe), "message", G_CALLBACK (message),
loop);
g_main_loop_run (loop);
exit:
gst_element_set_state (pipe, GST_STATE_NULL);
gst_object_unref (pipe);
g_main_loop_unref (loop);
return 0;
}