AForge.Video.DirectShow.VideoCaptureDevice.GetCurrentCrossbarInput C# (CSharp) Method

        private VideoInput GetCurrentCrossbarInput( IAMCrossbar crossbar )
        {
            VideoInput videoInput = VideoInput.Default;

            int inPinsCount, outPinsCount;

            // gen number of pins in the crossbar
            if ( crossbar.get_PinCounts( out outPinsCount, out inPinsCount ) == 0 )
            {
                int videoOutputPinIndex = -1;
                int pinIndexRelated;
                PhysicalConnectorType type;

                // find index of the video output pin
                for ( int i = 0; i < outPinsCount; i++ )
                {
                    if ( crossbar.get_CrossbarPinInfo( false, i, out pinIndexRelated, out type ) != 0 )
                        continue;

                    if ( type == PhysicalConnectorType.VideoDecoder )
                    {
                        videoOutputPinIndex = i;
                        break;
                    }
                }

                if ( videoOutputPinIndex != -1 )
                {
                    int videoInputPinIndex;

                    // get index of the input pin connected to the output
                    if ( crossbar.get_IsRoutedTo( videoOutputPinIndex, out videoInputPinIndex ) == 0 )
                    {
                        PhysicalConnectorType inputType;

                        crossbar.get_CrossbarPinInfo( true, videoInputPinIndex, out pinIndexRelated, out inputType );

                        videoInput = new VideoInput( videoInputPinIndex, inputType );
                    }
                }
            }

            return videoInput;
        }