public void Initialize(CameraSettingsActivatedEventArgs args)
{
videoDevController = (VideoDeviceController)args.VideoDeviceController;
if (args.VideoDeviceExtension != null)
{
lcWrapper = new WinRTComponent();
lcWrapper.Initialize(args.VideoDeviceExtension);
}
bool bAuto = false;
double value = 0.0;
if (videoDevController.Brightness.Capabilities.Step != 0)
{
slBrt.Minimum = videoDevController.Brightness.Capabilities.Min;
slBrt.Maximum = videoDevController.Brightness.Capabilities.Max;
slBrt.StepFrequency = videoDevController.Brightness.Capabilities.Step;
videoDevController.Brightness.TryGetValue(out value);
slBrt.Value = value;
}
else
{
slBrt.IsEnabled = false;
}
if (videoDevController.Brightness.Capabilities.AutoModeSupported)
{
videoDevController.Brightness.TryGetAuto(out bAuto);
tsBrtAuto.IsOn = bAuto;
}
else
{
tsBrtAuto.IsOn = false;
tsBrtAuto.IsEnabled = false;
}
if (videoDevController.Contrast.Capabilities.Step != 0)
{
slCrt.Minimum = videoDevController.Contrast.Capabilities.Min;
slCrt.Maximum = videoDevController.Contrast.Capabilities.Max;
slCrt.StepFrequency = videoDevController.Contrast.Capabilities.Step;
videoDevController.Contrast.TryGetValue(out value);
slCrt.Value = value;
}
else
{
slCrt.IsEnabled = false;
}
if (videoDevController.Contrast.Capabilities.AutoModeSupported)
{
videoDevController.Contrast.TryGetAuto(out bAuto);
tsCrtAuto.IsOn = bAuto;
}
else
{
tsCrtAuto.IsOn = false;
tsCrtAuto.IsEnabled = false;
}
if (videoDevController.Focus.Capabilities.Step != 0)
{
slFocus.Minimum = videoDevController.Focus.Capabilities.Min;
slFocus.Maximum = videoDevController.Focus.Capabilities.Max;
slFocus.StepFrequency = videoDevController.Focus.Capabilities.Step;
videoDevController.Focus.TryGetValue(out value);
slFocus.Value = value;
}
else
{
slFocus.IsEnabled = false;
}
if (videoDevController.Focus.Capabilities.AutoModeSupported)
{
videoDevController.Focus.TryGetAuto(out bAuto);
tsFocusAuto.IsOn = bAuto;
}
else
{
tsFocusAuto.IsOn = false;
tsFocusAuto.IsEnabled = false;
}
if (videoDevController.Exposure.Capabilities.Step != 0)
{
slExp.Minimum = videoDevController.Exposure.Capabilities.Min;
slExp.Maximum = videoDevController.Exposure.Capabilities.Max;
slExp.StepFrequency = videoDevController.Exposure.Capabilities.Step;
videoDevController.Exposure.TryGetValue(out value);
slExp.Value = value;
}
else
{
slExp.IsEnabled = false;
}
if (videoDevController.Exposure.Capabilities.AutoModeSupported)
{
videoDevController.Exposure.TryGetAuto(out bAuto);
tsExpAuto.IsOn = bAuto;
}
else
{
tsExpAuto.IsOn = false;
tsExpAuto.IsEnabled = false;
}
if (lcWrapper != null)
{
slEffect.Minimum = 0;
slEffect.Maximum = 100;
slEffect.StepFrequency = 1;
DspSettings dspSettings = lcWrapper.GetDspSetting();
slEffect.Value = dspSettings.percentOfScreen;
if (dspSettings.isEnabled == 1)
{
tsEffectEnabled.IsOn = true;
}
else
{
tsEffectEnabled.IsOn = false;
slEffect.IsEnabled = false;
}
}
else
{
tsEffectEnabled.IsEnabled = false;
slEffect.IsEnabled = false;
}
}
private void Cleanup()
{
System.Diagnostics.Debug.WriteLine("Cleaning up scanner");
try
{
_Ready = false;
_Done = true;
_Rendering = true;
_Controller = null;
_ImagePreview = null;
_Effects = null;
_Render.Dispose();
_Render = null;
_Image = null;
_Source.StopPreviewAsync();
_Source.PreviewFrameAvailable -= OnPreviewFrameAvailable;
_Source.Dispose();
_Source = null;
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Cleaning up scanner. {0}", ex.Message);
}
}
private async void Init()
{
//Get back camera
var devices = await DeviceInformation.FindAllAsync(DeviceClass.VideoCapture);
var backCameraId = devices.FirstOrDefault(x => x.EnclosureLocation != null && x.EnclosureLocation.Panel == Panel.Back).Id;
//Start preview
_cameraPreviewImageSource = new CameraPreviewImageSource();
await _cameraPreviewImageSource.InitializeAsync(backCameraId);
var properties = await _cameraPreviewImageSource.StartPreviewAsync();
//Setup preview
_width = 640.0;
_height = (_width / properties.Width) * properties.Height;
var bitmap = new WriteableBitmap((int)_width, (int)_height);
_writeableBitmap = bitmap;
PreviewImage.Source = _writeableBitmap;
_writeableBitmapRenderer = new WriteableBitmapRenderer(_cameraPreviewImageSource, _writeableBitmap);
_cameraPreviewImageSource.PreviewFrameAvailable += OnPreviewFrameAvailable;
_videoDevice = (VideoDeviceController)_cameraPreviewImageSource.VideoDeviceController;
//Set timer for auto focus
if (_videoDevice.FocusControl.Supported)
{
var focusSettings = new FocusSettings
{
AutoFocusRange = AutoFocusRange.Macro,
Mode = FocusMode.Auto,
WaitForFocus = false,
DisableDriverFallback = false
};
_videoDevice.FocusControl.Configure(focusSettings);
_timer = new DispatcherTimer
{
Interval = new TimeSpan(0, 0, 0, 2, 0)
};
_timer.Tick += TimerOnTick;
_timer.Start();
}
await _videoDevice.ExposureControl.SetAutoAsync(true);
_initialized = true;
}
private async Task InitCamera()
{
var devices = await Windows.Devices.Enumeration.DeviceInformation.FindAllAsync(Windows.Devices.Enumeration.DeviceClass.VideoCapture);
string deviceId = devices.FirstOrDefault(d => d.EnclosureLocation.Panel != Windows.Devices.Enumeration.Panel.Front).Id;
_Source = new CameraPreviewImageSource();
await _Source.InitializeAsync(deviceId);
_Source.PreviewFrameAvailable += OnPreviewFrameAvailable;
// set auto focus
_Controller = (VideoDeviceController)_Source.VideoDeviceController;
if (_Controller.FocusControl.Supported)
{
try
{
if (_Controller.FocusControl.WaitForFocusSupported)
{
_Controller.FocusControl.Configure(new FocusSettings { Mode = FocusMode.Continuous });
}
else
{
_Controller.FocusControl.Configure(new FocusSettings { Mode = FocusMode.Auto });
}
}
catch
{
_Controller.FocusControl.Configure(new FocusSettings { Mode = FocusMode.Auto });
}
}
if (_Controller.FlashControl.Supported) _Controller.FlashControl.Auto = true;
if (_Controller.ExposureControl.Supported) _Controller.ExposureControl.SetAutoAsync(true);
_Image = new WriteableBitmap((int)Window.Current.Bounds.Width, (int)Window.Current.Bounds.Height);
// filters
_Effects = new FilterEffect(_Source);
_Effects.Filters = new IFilter[] { new GrayscaleFilter() };
_Render = new WriteableBitmapRenderer(_Effects, _Image);
_Ready = true;
}
