gstreamer/examples/thread/thread.c

#include <stdlib.h>
#include <gst/gst.h>

/* 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 *pipeline;
  GstElement *thread;

  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 new bin to hold the elements */
  pipeline = gst_pipeline_new("pipeline");
  g_assert(pipeline != 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);

  /* add objects to the main pipeline */
  /*
  gst_pipeline_add_src(GST_PIPELINE(pipeline), filesrc);
  gst_pipeline_add_sink(GST_PIPELINE(pipeline), osssink);

  if (!gst_pipeline_autoplug(GST_PIPELINE(pipeline))) {
    g_print("unable to handle stream\n");
    exit(-1);
  }
  */

  /*gst_bin_remove(GST_BIN(pipeline), filesrc); */

  /*gst_bin_add(GST_BIN(thread), filesrc); */
  gst_bin_add(GST_BIN(thread), GST_ELEMENT(pipeline));

  /* make it ready */
  gst_element_set_state(GST_ELEMENT(thread), GST_STATE_READY);
  /* start playing */
  gst_element_set_state(GST_ELEMENT(thread), GST_STATE_PLAYING);

  gst_main();

  gst_object_unref(GST_OBJECT(thread));

  exit(0);
}