public IGameImageSource Get(string key)
        {
            if (loadedSources.TryGetValue(key, out var device))
            {
                return(device);
            }

            var devices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            //var devices = DsDevice.GetDevicesOfCat(FilterCategory.VideoInputDevice);
            return(loadedSources[key] = new CaptureDeviceGameImageSource(devices.First(x => x.Name == key)));
        }
            /// <summary>
            /// Initialize access to the camera hardware
            /// </summary>
            public Cam()
            {
                // Event used to wait for completion of camera tasks
                _finished = new EventWaitHandle(false, EventResetMode.ManualReset);

                // Find the integrated camera device
                var coll = new FilterInfoCollection(FilterCategory.VideoInputDevice);

                if (!coll.Any(fi => fi.MonikerString.StartsWith(@"@device:pnp:\\?\usb#vid_5986&pid_2115")))
                {
                    throw new Exception("Integrated Camera device not found");
                }
                _vdev = new VideoCaptureDevice(coll.First(fi => fi.MonikerString.StartsWith(@"@device:pnp:\\?\usb#vid_5986&pid_2115")).MonikerString);

                // Initial settings and hook handlers
                _vdev.VideoResolution  = _vdev.VideoCapabilities.First(sn => sn.FrameSize == new System.Drawing.Size(320, 240));
                _vdev.PlayingFinished += (sender, e) => _finished.Set();
                _vdev.NewFrame        += (sender, e) =>
                {
                    int o_exp = -3;
                    CameraControlFlags o_flag = CameraControlFlags.Auto;
                    if (_cnt == 0)
                    {
                        // 1st frame, camera is open and working. Change settings to fixed constants.
                        _vdev.GetCameraProperty(CameraControlProperty.Exposure, out o_exp, out o_flag);
                        _vdev.SetCameraProperty(CameraControlProperty.Exposure, -3, CameraControlFlags.Manual);
                    }
                    if (_cnt == 4)
                    {
                        // 5th frame, keep this frame. Revert camera settings. Signal to stop querying for frames.
                        _img = e.Frame.Clone(new System.Drawing.Rectangle(0, 0, e.Frame.Width, e.Frame.Height), System.Drawing.Imaging.PixelFormat.DontCare);
                        _vdev.SetCameraProperty(CameraControlProperty.Exposure, o_exp, o_flag);
                        _vdev.SignalToStop();
                    }
                    _cnt++;
                };
            }