gstreamer/examples/launch/mp3parselaunch.c

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

int
main (int argc, char *argv[])
{
  GstElement *pipeline;
  GstElement *filesrc;
  GError *error = NULL;

  gst_init (&argc, &argv);

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

  pipeline = (GstElement *)
      gst_parse_launch ("filesrc name=my_filesrc ! mad ! osssink", &error);
  if (!pipeline) {
    fprintf (stderr, "Parse error: %s", error->message);
    exit (1);
  }

  filesrc = gst_bin_get_by_name (GST_BIN (pipeline), "my_filesrc");
  g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);

  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  while (gst_bin_iterate (GST_BIN (pipeline)));

  gst_element_set_state (pipeline, GST_STATE_NULL);

  return 0;
}