gstreamer/testsuite/threads/threadb.c

#include <gst/gst.h>

/* threadb.c
 * this tests if we can make a GstThread, put some stuff in it,
 * dispatch it, and let it run from a main gst loop
 */


static void
construct_pipeline (GstElement *pipeline) 
{
  GstElement *src, *sink, *identity;

  src      = gst_element_factory_make ("fakesrc",  NULL);
  identity = gst_element_factory_make ("identity", NULL);
  sink     = gst_element_factory_make ("fakesink", NULL);
  g_assert (src);
  g_assert (identity);
  g_assert (sink);

  gst_element_connect_many (src, identity, sink, NULL);

  gst_bin_add_many (GST_BIN (pipeline), src, identity, sink, NULL);

  g_object_set (G_OBJECT (src), "num_buffers", 5, NULL);
}

void
state_changed (GstElement *el, gint arg1, gint arg2, gpointer user_data)
{
  g_print ("element %s has changed state\n", GST_ELEMENT_NAME (el));
}

int
main (gint argc, gchar *argv[])
{
  GstElement *thread;
  
  gst_init (&argc, &argv);

  thread = gst_thread_new ("main_thread");
  g_assert (thread);

  /* connect state change signal */
  g_signal_connect (G_OBJECT (thread), "state_change", state_changed, NULL);
  construct_pipeline (thread);

  g_print ("Setting thread to play\n");
  gst_element_set_state (thread, GST_STATE_PLAYING);

  g_print ("Going into the main GStreamer loop\n");
  gst_main (); 

  return 0;
}