-#include <stdlib.h>
#include <gst/gst.h>
-static void
-event_loop (GstElement * pipe)
+static gboolean
+bus_call (GstBus * bus, GstMessage * msg, gpointer data)
{
- GstBus *bus;
- GstMessage *message = NULL;
- gboolean running = TRUE;
-
- bus = gst_element_get_bus (GST_ELEMENT (pipe));
-
- while (running) {
- message = gst_bus_poll (bus, GST_MESSAGE_ANY, -1);
-
- g_assert (message != NULL);
-
- switch (message->type) {
- case GST_MESSAGE_EOS:
- running = FALSE;
- break;
- case GST_MESSAGE_WARNING:{
- GError *gerror;
- gchar *debug;
-
- gst_message_parse_warning (message, &gerror, &debug);
- gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
- g_error_free (gerror);
- g_free (debug);
- break;
- }
- case GST_MESSAGE_ERROR:{
- GError *gerror;
- gchar *debug;
-
- gst_message_parse_error (message, &gerror, &debug);
- gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
- g_error_free (gerror);
- g_free (debug);
- running = FALSE;
- break;
- }
- default:
- break;
+ 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;
}
- gst_message_unref (message);
- }
- gst_object_unref (bus);
-}
+ case GST_MESSAGE_ERROR:{
+ gchar *debug;
+ GError *err;
-int
-main (int argc, char *argv[])
-{
- GstElement *bin, *filesrc, *decoder, *audiosink;
- GstElement *conv, *resample;
+ gst_message_parse_error (msg, &err, &debug);
+ g_free (debug);
- gst_init (&argc, &argv);
+ g_print ("Error: %s\n", err->message);
+ g_error_free (err);
+
+ g_main_loop_quit (loop);
- if (argc != 2) {
- g_print ("usage: %s <mp3 file>\n", argv[0]);
- exit (-1);
+ break;
+ }
+ default:
+ break;
}
+ return TRUE;
+}
- /* create a new bin to hold the elements */
- bin = gst_pipeline_new ("pipeline");
- g_assert (bin);
+gint
+main (gint argc, gchar * argv[])
+{
+ GstElement *playbin;
+ GMainLoop *loop;
+ GstBus *bus;
+ gchar *uri;
- /* create a disk reader */
- filesrc = gst_element_factory_make ("filesrc", "disk_source");
- g_assert (filesrc);
- g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
+ gst_init (&argc, &argv);
- /* now it's time to get the decoder */
- decoder = gst_element_factory_make ("mad", "decode");
- if (!decoder) {
- g_print ("could not find plugin \"mad\"");
- return -1;
+ if (argc < 2) {
+ g_print ("usage: %s <media file or uri>\n", argv[0]);
+ return 1;
}
- /* also, we need to add some converters to make sure the audio stream
- * from the decoder is converted into a format the audio sink can
- * understand (if necessary) */
- conv = gst_element_factory_make ("audioconvert", "audioconvert");
- if (!conv) {
- g_print ("could not create \"audioconvert\" element!");
- return -1;
- }
- resample = gst_element_factory_make ("audioresample", "audioresample");
- if (!resample) {
- g_print ("could not create \"audioresample\" element!");
- return -1;
+ playbin = gst_element_factory_make ("playbin2", NULL);
+ if (!playbin) {
+ g_print ("'playbin2' gstreamer plugin missing\n");
+ return 1;
}
- /* and an audio sink */
- audiosink = gst_element_factory_make ("alsasink", "play_audio");
- g_assert (audiosink);
-
- /* add objects to the main pipeline */
- gst_bin_add_many (GST_BIN (bin), filesrc, decoder, conv,
- resample, audiosink, NULL);
+ /* 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);
- /* link the elements */
- gst_element_link_many (filesrc, decoder, conv, resample, audiosink, NULL);
+ /* create and event loop and feed gstreamer bus mesages to it */
+ loop = g_main_loop_new (NULL, FALSE);
- /* start playing */
- gst_element_set_state (bin, GST_STATE_PLAYING);
+ bus = gst_element_get_bus (playbin);
+ gst_bus_add_watch (bus, bus_call, loop);
+ g_object_unref (bus);
- /* Run event loop listening for bus messages until EOS or ERROR */
- event_loop (bin);
+ /* start play back and listed to events */
+ gst_element_set_state (playbin, GST_STATE_PLAYING);
+ g_main_loop_run (loop);
- /* stop the bin */
- gst_element_set_state (bin, GST_STATE_NULL);
+ /* cleanup */
+ gst_element_set_state (playbin, GST_STATE_NULL);
+ g_object_unref (playbin);
+ g_object_unref (loop);
- exit (0);
+ return 0;
}