Rewind a pipeline

[Jorge Fernandez Monteagudo]

Hi all!

Is it possible to reuse a pipeline? I would like to avoid creating and destroying a pipeline when I
want to have a video playing in a loop. How can I do that? When I try to send a seek event I
always get an error. The next code always print "Send seek event failed!"

    // Set the pipeline ready.
    ret = gst_element_set_state( pipeline, GST_STATE_READY );
    if( ret == GST_STATE_CHANGE_FAILURE ) {
      printf( "Failed to start up pipeline!\n" );
      done = 1;
      return;
    }

    // Seek the stream init.
    GstEvent *seek_event = NULL;

    seek_event = gst_event_new_seek( 1.0, GST_FORMAT_TIME,
                                     (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT),
                                     GST_SEEK_TYPE_SET, 0LL,
                                     GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE );
    if( gst_element_send_event( pipeline, seek_event ) == false ) {
      printf( "Send seek event failed!\n" );
      done = 1;
      return;
    }

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