private void AddVideoRenderer()
{
int hr;
_videoRender = (IBaseFilter) new VideoMixingRenderer();
Debug.Assert(_videoRender != null);
hr = _graphBuilder.AddFilter(_videoRender, "VMR7");
DsError.ThrowExceptionForHR(hr);
// Configure the video renderer
if (_hostControl != null)
{
IVMRFilterConfig vmrFilterConfig = (IVMRFilterConfig)_videoRender;
hr = vmrFilterConfig.SetRenderingMode(VMRMode.Windowless);
DsError.ThrowExceptionForHR(hr);
_vmrWindowlessControl = (IVMRWindowlessControl)_videoRender;
hr = _vmrWindowlessControl.SetAspectRatioMode(VMRAspectRatioMode.LetterBox);
DsError.ThrowExceptionForHR(hr);
hr = _vmrWindowlessControl.SetVideoClippingWindow(_hostControl.Handle);
DsError.ThrowExceptionForHR(hr);
ResizeMoveHandler(null, null);
_hostControl.Paint += new PaintEventHandler(PaintHandler);
_hostControl.Resize += new EventHandler(ResizeMoveHandler);
_hostControl.Move += new EventHandler(ResizeMoveHandler);
}
else
{
throw new Exception("Host control not specified");
}
}
protected override void Initialize(IGraphBuilder pGraphBuilder, IntPtr hMediaWindow)
{
// QUERY the VMR interfaces
try
{
_pVMRFilterConfig = (IVMRFilterConfig)BaseFilter;
_pVMRFilterConfig.SetRenderingMode(VMRMode.VMRMode_Windowless);
_pVMRWindowlessControl = (IVMRWindowlessControl)BaseFilter;
_pVMRWindowlessControl.SetVideoClippingWindow(hMediaWindow);
_pVMRWindowlessControl.SetAspectRatioMode(VMR_ASPECT_RATIO_MODE.VMR_ARMODE_NONE);
}
catch (Exception e)
{
throw new FilterGraphBuilderException(GraphBuilderError.ConfigureVMR, e);
}
}
/// <summary>
/// Binds a control to the VMR. This will be the surface the VMR renders onto.
/// </summary>
/// <param name="hostControl">control to render on</param>
/// <seealso cref="M:FutureConcepts.Media.Client.StreamViewer.DSGraph.DetachControl"/>
public void AttachControl(Control hostControl)
{
int hr;
// Configure the video renderer
if (hostControl != null)
{
_hostControl = hostControl;
_windowlessControl = (IVMRWindowlessControl)_videoRender;
hr = _windowlessControl.SetVideoClippingWindow(hostControl.Handle);
DsError.ThrowExceptionForHR(hr);
ResizeMoveHandler(null, null);
_hostControl.Paint += new PaintEventHandler(PaintHandler);
_hostControl.Resize += new EventHandler(ResizeMoveHandler);
_hostControl.Move += new EventHandler(ResizeMoveHandler);
Microsoft.Win32.SystemEvents.DisplaySettingsChanged += new EventHandler(DisplayChangedHandler); // for WM_DISPLAYCHANGE
}
}
private void ConfigureVMR()
{
baseFilter = (IBaseFilter)new VideoMixingRenderer();
IVMRFilterConfig filterConfig = (IVMRFilterConfig)baseFilter;
filterConfig.SetNumberOfStreams(1);
filterConfig.SetRenderingMode(VMRMode.Windowless);
VMRCtrl = (IVMRWindowlessControl)baseFilter;
VMRCtrl.SetVideoClippingWindow(winHandle);
VMRCtrl.SetAspectRatioMode(VMRAspectRatioMode.LetterBox);
Form1_ResizeMove(null, null);
graphBuilder.AddFilter(baseFilter, "Video Mixing Renderer");
}
