gstreamer/tests/examples/helloworld/helloworld.c
2012-05-23 10:14:32 +02:00

81 lines
1.7 KiB
C

#include <gst/gst.h>
static gboolean
bus_call (GstBus * bus, GstMessage * msg, gpointer data)
{
GMainLoop *loop = (GMainLoop *) data;
switch (GST_MESSAGE_TYPE (msg)) {
case GST_MESSAGE_EOS:{
g_print ("End-of-stream\n");
g_main_loop_quit (loop);
break;
}
case GST_MESSAGE_ERROR:{
gchar *debug;
GError *err;
gst_message_parse_error (msg, &err, &debug);
g_printerr ("Debugging info: %s\n", (debug) ? debug : "none");
g_free (debug);
g_print ("Error: %s\n", err->message);
g_error_free (err);
g_main_loop_quit (loop);
break;
}
default:
break;
}
return TRUE;
}
gint
main (gint argc, gchar * argv[])
{
GstElement *playbin;
GMainLoop *loop;
GstBus *bus;
gchar *uri;
gst_init (&argc, &argv);
if (argc < 2) {
g_print ("usage: %s <media file or uri>\n", argv[0]);
return 1;
}
playbin = gst_element_factory_make ("playbin", NULL);
if (!playbin) {
g_print ("'playbin' gstreamer plugin missing\n");
return 1;
}
/* take the commandline argument and ensure that it is a uri */
if (gst_uri_is_valid (argv[1]))
uri = g_strdup (argv[1]);
else
uri = gst_filename_to_uri (argv[1], NULL);
g_object_set (playbin, "uri", uri, NULL);
g_free (uri);
/* create and event loop and feed gstreamer bus mesages to it */
loop = g_main_loop_new (NULL, FALSE);
bus = gst_element_get_bus (playbin);
gst_bus_add_watch (bus, bus_call, loop);
g_object_unref (bus);
/* start play back and listed to events */
gst_element_set_state (playbin, GST_STATE_PLAYING);
g_main_loop_run (loop);
/* cleanup */
gst_element_set_state (playbin, GST_STATE_NULL);
g_object_unref (playbin);
g_main_loop_unref (loop);
return 0;
}