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

        public bool CheckIfCrossbarAvailable( )
        {
            lock ( sync )
            {
                if ( !isCrossbarAvailable.HasValue )
                {
                    if ( !IsRunning )
                    {
                        // create graph without playing to collect available inputs
                        WorkerThread( false );
                    }
                    else
                    {
                        for ( int i = 0; ( i < 500 ) && ( !isCrossbarAvailable.HasValue ); i++ )
                        {
                            Thread.Sleep( 10 );
                        }
                    }
                }

                return ( !isCrossbarAvailable.HasValue ) ? false : isCrossbarAvailable.Value;
            }
        }

        public void Enable()
        {
            _processing = true;

            switch (Camobject.settings.sourceindex)
            {
                case 0:
                    var jpegSource = new JPEGStream(Camobject.settings.videosourcestring);
                    if (Camobject.settings.frameinterval != 0)
                        jpegSource.FrameInterval = Camobject.settings.frameinterval;
                    if (Camobject.settings.login != "")
                    {
                        jpegSource.Login = Camobject.settings.login;
                        jpegSource.Password = Camobject.settings.password;
                    }
                    //jpegSource.SeparateConnectionGroup = true;
                    jpegSource.RequestTimeout = iSpyServer.Default.IPCameraTimeout;
                    OpenVideoSource(jpegSource, false);
                    break;
                case 1:
                    var mjpegSource = new MJPEGStream(Camobject.settings.videosourcestring)
                                          {
                                              Login = Camobject.settings.login,
                                              Password = Camobject.settings.password,
                                              RequestTimeout = iSpyServer.Default.IPCameraTimeout,
                                              HttpUserAgent = Camobject.settings.useragent
                                          };
                    //mjpegSource.SeparateConnectionGroup = true;
                    OpenVideoSource(mjpegSource, false);
                    break;
                case 2:
                    //var fileSource = new AVIFileVideoSource(Camobject.settings.videosourcestring);
                    //OpenVideoSource(fileSource, true);
                    break;
                case 3:
                    string moniker = Camobject.settings.videosourcestring;

                    var videoSource = new VideoCaptureDevice(moniker);
                    string[] wh = Camobject.resolution.Split('x');
                    var sz = new Size(Convert.ToInt32(wh[0]), Convert.ToInt32(wh[1]));
                    var vc = videoSource.VideoCapabilities.Where(p => p.FrameSize == sz).ToList();
                    if (vc.Count>0)
                    {
                        var vc2 = vc.FirstOrDefault(p => p.AverageFrameRate == Camobject.settings.framerate) ??
                                  vc.FirstOrDefault();
                        videoSource.VideoResolution = vc2;
                    }

                    if (Camobject.settings.crossbarindex!=-1 && videoSource.CheckIfCrossbarAvailable())
                    {
                        var cbi =
                            videoSource.AvailableCrossbarVideoInputs.FirstOrDefault(
                                p => p.Index == Camobject.settings.crossbarindex);
                        if (cbi!=null)
                        {
                            videoSource.CrossbarVideoInput = cbi;
                        }
                    }

                    OpenVideoSource(videoSource, true);
                    break;
                case 4:
                    Rectangle area = Rectangle.Empty;
                    if (!String.IsNullOrEmpty(Camobject.settings.desktoparea))
                    {
                        var i = Array.ConvertAll(Camobject.settings.desktoparea.Split(','), int.Parse);
                        area = new Rectangle(i[0],i[1],i[2],i[3]);
                    }
                    var desktopSource = new DesktopStream(Convert.ToInt32(Camobject.settings.videosourcestring), area)
                                            {MousePointer = Camobject.settings.desktopmouse};
                    if (Camobject.settings.frameinterval != 0)
                        desktopSource.FrameInterval = Camobject.settings.frameinterval;
                    OpenVideoSource(desktopSource, false);
                    break;
                case 5:
                    var ks = new KinectStream(Nv("UniqueKinectId"), Convert.ToBoolean(Nv("KinectSkeleton")));
                    OpenVideoSource(ks, true);
                    break;
            }

            if (Camera != null)
            {
                if (!Camera.IsRunning)
                {
                    Camera.Start();
                }

                Camobject.settings.active = true;

                if (File.Exists(Camobject.settings.maskimage))
                {
                    Camera.Mask = Image.FromFile(Camobject.settings.maskimage);
                }
            }
            _frameCount = 0;
            VideoSourceErrorState = false;
            VideoSourceErrorMessage = "";
            Camobject.ftp.ready = true;
            MainForm.NeedsSync = true;

            Invalidate();
            _lastRun = DateTime.Now.Ticks;
            _processing = false;
        }