CodeTV.GraphBuilderBDA.AddAndConnectBDABoardFilters C# (CSharp) Method

        protected void AddAndConnectBDABoardFilters()
        {
            int hr = 0;
            DsDevice[] devices;

            this.captureGraphBuilder = (ICaptureGraphBuilder2)new CaptureGraphBuilder2();
            captureGraphBuilder.SetFiltergraph(this.graphBuilder);

            try
            {
                if (this.TunerDevice != null)
                {
                    IBaseFilter tmp;

                    hr = graphBuilder.AddSourceFilterForMoniker(this.TunerDevice.Mon, null, this.TunerDevice.Name, out tmp);
                    DsError.ThrowExceptionForHR(hr);

                    hr = captureGraphBuilder.RenderStream(null, null, this.networkProvider, null, tmp);
                    if (hr == 0)
                    {
                        // Got it !
                        this.tuner = tmp;
                    }
                    else
                    {
                        // Try another...
                        int hr2 = graphBuilder.RemoveFilter(tmp);
                        Marshal.ReleaseComObject(tmp);
                        DsError.ThrowExceptionForHR(hr);
                        return;
                    }
                }
                else
                {
                    // Enumerate BDA Source filters category and found one that can connect to the network provider
                    devices = DsDevice.GetDevicesOfCat(FilterCategory.BDASourceFiltersCategory);
                    for (int i = 0; i < devices.Length; i++)
                    {
                        IBaseFilter tmp;

                        hr = graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, devices[i].Name, out tmp);
                        DsError.ThrowExceptionForHR(hr);

                        hr = captureGraphBuilder.RenderStream(null, null, this.networkProvider, null, tmp);
                        if (hr == 0)
                        {
                            // Got it !
                            this.tuner = tmp;
                            break;
                        }
                        else
                        {
                            // Try another...
                            hr = graphBuilder.RemoveFilter(tmp);
                            Marshal.ReleaseComObject(tmp);
                        }
                    }
                }
                // Assume we found a tuner filter...

                if (this.CaptureDevice != null)
                {
                    IBaseFilter tmp;

                    hr = graphBuilder.AddSourceFilterForMoniker(this.CaptureDevice.Mon, null, this.CaptureDevice.Name, out tmp);
                    DsError.ThrowExceptionForHR(hr);

                    hr = captureGraphBuilder.RenderStream(null, null, this.tuner, null, tmp);
                    if (hr == 0)
                    {
                        // Got it !
                        this.capture = tmp;

                        // Connect it to the MPEG-2 Demux
                        hr = captureGraphBuilder.RenderStream(null, null, this.capture, null, this.mpeg2Demux);
                        if (hr < 0)
                            // BDA also support 3 filter scheme (never show it in real life).
                            throw new ApplicationException("This application only support the 2 filters BDA scheme");
                    }
                    else
                    {
                        // Try another...
                        int hr2 = graphBuilder.RemoveFilter(tmp);
                        Marshal.ReleaseComObject(tmp);
                        DsError.ThrowExceptionForHR(hr);
                        return;
                    }
                }
                else
                {
                    this.capture = null;

                    // Connect it to the MPEG-2 Demux
                    hr = captureGraphBuilder.RenderStream(null, null, this.tuner, null, this.mpeg2Demux);
                    if (hr < 0)
                        // BDA also support 3 filter scheme (never show it in real life).
                        throw new ApplicationException("This application only support the 2 filters BDA scheme");

                    //// Then enumerate BDA Receiver Components category to found a filter connecting
                    //// to the tuner and the MPEG2 Demux
                    //devices = DsDevice.GetDevicesOfCat(FilterCategory.BDAReceiverComponentsCategory);

                    //for (int i = 0; i < devices.Length; i++)
                    //{
                    //    IBaseFilter tmp;

                    //    hr = graphBuilder.AddSourceFilterForMoniker(devices[i].Mon, null, devices[i].Name, out tmp);
                    //    DsError.ThrowExceptionForHR(hr);

                    //    hr = captureGraphBuilder.RenderStream(null, null, this.tuner, null, tmp);
                    //    if (hr == 0)
                    //    {
                    //        // Got it !
                    //        this.capture = tmp;

                    //        // Connect it to the MPEG-2 Demux
                    //        hr = captureGraphBuilder.RenderStream(null, null, this.capture, null, this.mpeg2Demux);
                    //        if (hr < 0)
                    //            // BDA also support 3 filter scheme (never show it in real life).
                    //            throw new ApplicationException("This application only support the 2 filters BDA scheme");

                    //        break;
                    //    }
                    //    else
                    //    {
                    //        // Try another...
                    //        hr = graphBuilder.RemoveFilter(tmp);
                    //        Marshal.ReleaseComObject(tmp);
                    //    }
                    //}
                }
            }
            finally
            {
            }
        }