1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/* 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;
}
|
