gstreamer/tests/threadstate/threadstate2.c

#include <gst/gst.h>

/* this pipeline is:
 * { filesrc ! mad ! osssink }
 */

/* eos will be called when the src element has an end of stream */
void eos(GstElement *element, gpointer data) 
{
  GstThread *thread = GST_THREAD(data);
  g_print("have eos, quitting\n");

  /* stop the bin */
  gst_element_set_state(GST_ELEMENT(thread), GST_STATE_NULL);

  gst_main_quit();
}

int main(int argc,char *argv[]) 
{
  GstElement *filesrc, *osssink;
  GstElement *thread;
  GstElement *mad;
  gint x;

  gst_init(&argc,&argv);

  if (argc != 2) {
    g_print("usage: %s <filename>\n", argv[0]);
    exit(-1);
  }

  /* create a new thread to hold the elements */
  thread = gst_thread_new("thread");
  g_assert(thread != NULL);

  /* create a disk reader */
  filesrc = gst_element_factory_make("filesrc", "disk_source");
  g_assert(filesrc != NULL);
  g_object_set(G_OBJECT(filesrc),"location", argv[1],NULL);
  g_signal_connect(G_OBJECT(filesrc),"eos",
                     G_CALLBACK(eos), thread);

  /* and an audio sink */
  osssink = gst_element_factory_make("osssink", "play_audio");
  g_assert(osssink != NULL);

  /* did i mention that this is an mp3 player? */
  mad = gst_element_factory_make("mad", "mp3_decoder");
  g_assert(mad != NULL);

  gst_bin_add_many (GST_BIN(thread), filesrc, mad, osssink, NULL);
  gst_element_connect_many (filesrc, mad, osssink, NULL);

  for (x = 0 ; x < 10 ; x++){
    g_print("playing %d\n", x);
    gst_element_set_state(GST_ELEMENT(thread), GST_STATE_PLAYING);
    sleep(2);

    g_print("pausing %d\n", x);
    gst_element_set_state(GST_ELEMENT(thread), GST_STATE_PAUSED);
    sleep(2);
  }

  exit(0);
}