//インスタンス変数
private IFilterGraph2 _filterGraph;
private IMediaControl _mediaControl;
private IPin _outputPin;
private IPin _inputPin;

///グラフ作成
private void SetupGraph(Control control)
{
	//デバイス取得
	var capDevices = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice);
	filterGraph = new FilterGraph() as IFilterGraph2;
	IBaseFilter capFilter;
	var hr = filterGraph.AddSourceFilterForMoniker(capDevices[0].Mon, null, capDevices[0].Name, out capFilter);
	DsError.ThrowExceptionForHR(hr);

	outputPin = DsFindPin.ByCategory(capFilter, PinCategory.Capture, 0);
	var pRender = new VideoRendererDefault() as IBaseFilter;
	hr = filterGraph.AddFilter(pRender, "Renderer");
	DsError.ThrowExceptionForHR(hr);
	_inputPin = DsFindPin.ByDirection(pRender, PinDirection.Input, 0);
	hr = filterGraph.Connect(_outputPin, _inputPin);
	DsError.ThrowExceptionForHR(hr);
	//このメソッドでコントロールに描画する設定を行います。
	ConfigVideoWindow(control);	
	_mediaControl = _filterGraph as IMediaControl;
	_mediaControl.Run();
}

//切断
public void Disconnect()
{
	_mediaControl.Stop();
	var hr=  filterGraph.Disconnect(_outputPin);
	DsError.ThrowExceptionForHR(hr);
	_mediaControl.Run();
}

///再接続
public void Reconnect()
{
	_mediaControl.Stop();
	var hr= filterGraph.Connect(_outputPin, inputPin);
	DsError.ThrowExceptionForHR(hr);
	_mediaControl.Run();	
}