public void BuildGraph()
{
int hr = 0;
graphBuilder = (IFilterGraph2) new FilterGraph();
rot = new DsROTEntry(graphBuilder);
vmr9 = (IBaseFilter) new VideoMixingRenderer9();
IVMRFilterConfig9 filterConfig = (IVMRFilterConfig9)vmr9;
hr = filterConfig.SetNumberOfStreams(2);
DsError.ThrowExceptionForHR(hr);
// Set the custom compositor
hr = filterConfig.SetImageCompositor(this);
DsError.ThrowExceptionForHR(hr);
IVMRMixerControl9 mixerControl = (IVMRMixerControl9)vmr9;
// In COLORREF, colors are coded in ABGR format
hr = mixerControl.SetBackgroundClr(backgroundColorABGR);
DsError.ThrowExceptionForHR(hr);
hr = graphBuilder.AddFilter(vmr9, "VMR9");
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);
}
private void ConfigureVMR9InWindowlessMode()
{
int hr = 0;
IVMRFilterConfig9 filterConfig = (IVMRFilterConfig9)vmr9;
// Must be called before calling SetImageCompositor
hr = filterConfig.SetNumberOfStreams(1);
DsError.ThrowExceptionForHR(hr);
// Create an instance of the Compositor
compositor = new Compositor();
// Configure the filter with the Compositor
hr = filterConfig.SetImageCompositor(compositor);
DsError.ThrowExceptionForHR(hr);
// Change VMR9 mode to Windowless
hr = filterConfig.SetRenderingMode(VMR9Mode.Windowless);
DsError.ThrowExceptionForHR(hr);
windowlessCtrl = (IVMRWindowlessControl9)vmr9;
// Set rendering window
hr = windowlessCtrl.SetVideoClippingWindow(renderingPanel.Handle);
DsError.ThrowExceptionForHR(hr);
// Set Aspect-Ratio
hr = windowlessCtrl.SetAspectRatioMode(VMR9AspectRatioMode.LetterBox);
DsError.ThrowExceptionForHR(hr);
// Add delegates for Windowless operations
AddHandlers();
// Call the resize handler to configure the output size
MainForm_ResizeMove(null, null);
}