public void BuildGraph()
{
int hr = 0;
graphBuilder = (IFilterGraph2) new FilterGraph();
rot = new DsROTEntry(graphBuilder);
vmr = (IBaseFilter) new VideoMixingRenderer();
IVMRFilterConfig filterConfig = (IVMRFilterConfig)vmr;
hr = filterConfig.SetNumberOfStreams(2);
DsError.ThrowExceptionForHR(hr);
// Set the custom compositor
hr = filterConfig.SetImageCompositor(this);
DsError.ThrowExceptionForHR(hr);
IVMRMixerControl mixerControl = (IVMRMixerControl)vmr;
// In COLORREF, colors are coded in ABGR format
hr = mixerControl.SetBackgroundClr(backgroundColorABGR);
DsError.ThrowExceptionForHR(hr);
hr = graphBuilder.AddFilter(vmr, "VMR");
DsError.ThrowExceptionForHR(hr);
// The 2 VMR pins must be connected...
hr = graphBuilder.RenderFile(@"..\..\..\Resources\foo.avi", null);
DsError.ThrowExceptionForHR(hr);
hr = graphBuilder.RenderFile(@"..\..\..\Resources\foo.avi", null);
DsError.ThrowExceptionForHR(hr);
hr = (graphBuilder as IMediaControl).Run();
DsError.ThrowExceptionForHR(hr);
}
