private void toolStripButtonTest_Click(object sender, EventArgs e)
{
this.currentGraphBuilder.StartOSD();
//GraphBuilderBDA graphBuilderBDA = this.currentGraphBuilder as GraphBuilderBDA;
//IMediaFilter mf = graphBuilderBDA.FilterGraph as IMediaFilter;
//IReferenceClock rc;
//mf.GetSyncSource(out rc);
//IReferenceClock arc = graphBuilderBDA.AudioRenderer as IReferenceClock;
//IReferenceClock drc = graphBuilderBDA.Demultiplexer as IReferenceClock;
//if (rc == arc)
// MessageBox.Show("AudioRenderer");
//else if (rc == drc)
// MessageBox.Show("Demultiplexer");
//else if (rc == null)
// MessageBox.Show("Null");
}