private void InitializeCamera()
{
var captureResolutions = PhotoCaptureDevice.GetAvailableCaptureResolutions(CameraSensorLocation.Back).ToArray();
var previewResolutions = PhotoCaptureDevice.GetAvailablePreviewResolutions(CameraSensorLocation.Back).ToArray();
Windows.Foundation.Size captureResolution = new Windows.Foundation.Size(640, 480);
Windows.Foundation.Size previewResolution = new Windows.Foundation.Size(640, 480);
try
{
captureResolution = GetFirstWideResolution(captureResolutions);
previewResolution = GetFirstWideResolution(previewResolutions);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Unable to get wide resolution for viewfinder, using 640x480");
}
var task = PhotoCaptureDevice.OpenAsync(CameraSensorLocation.Back, captureResolution).AsTask();
task.Wait();
_device = task.Result;
_device.SetPreviewResolutionAsync(previewResolution).AsTask().Wait();
var objectResolutionSide = _device.PreviewResolution.Height * (ReaderBorder.Height - 2 * ReaderBorder.Margin.Top) / 480;
var objectResolution = new Windows.Foundation.Size(objectResolutionSide, objectResolutionSide);
var focusRegionSize = new Windows.Foundation.Size(objectResolutionSide, objectResolutionSide);
var objectSize = OpticalReaderLib.OpticalReaderTask.Instance.ObjectSize;
if (objectSize.Width * objectSize.Height > 0)
{
var parameters = OpticalReaderLib.Utilities.GetSuggestedParameters(_device.PreviewResolution, _device.SensorRotationInDegrees, objectSize, objectResolution);
_zoom = Math.Max(parameters.Zoom, 1.0);
}
else
{
_zoom = 1.0;
}
var centerPoint = new Windows.Foundation.Point(previewResolution.Width / 2, previewResolution.Height / 2);
_device.FocusRegion = new Windows.Foundation.Rect(
centerPoint.X - focusRegionSize.Width / 2, centerPoint.Y - focusRegionSize.Height / 2,
focusRegionSize.Width, focusRegionSize.Height);
ViewfinderVideoBrush.SetSource(_device);
}
/// <summary>
/// Synchronously initializes the photo capture device for a high resolution photo capture.
/// Viewfinder video stream is sent to a VideoBrush element called ViewfinderVideoBrush, and
/// device hardware capture key is wired to the CameraButtons_ShutterKeyHalfPressed and
/// CameraButtons_ShutterKeyPressed methods.
/// </summary>
private void InitializeCamera()
{
Windows.Foundation.Size captureResolution;
var deviceName = DeviceStatus.DeviceName;
if (deviceName.Contains("RM-875") || deviceName.Contains("RM-876") || deviceName.Contains("RM-877"))
{
captureResolution = new Windows.Foundation.Size(7712, 4352); // 16:9
//captureResolution = new Windows.Foundation.Size(7136, 5360); // 4:3
}
else if (deviceName.Contains("RM-937") || deviceName.Contains("RM-938") || deviceName.Contains("RM-939"))
{
captureResolution = new Windows.Foundation.Size(5376, 3024); // 16:9
//captureResolution = new Windows.Foundation.Size(4992, 3744); // 4:3
}
else
{
captureResolution = PhotoCaptureDevice.GetAvailableCaptureResolutions(SENSOR_LOCATION).First();
}
var task = PhotoCaptureDevice.OpenAsync(SENSOR_LOCATION, captureResolution).AsTask();
task.Wait();
_device = task.Result;
_device.SetProperty(KnownCameraGeneralProperties.PlayShutterSoundOnCapture, true);
if (_flashButton != null)
{
SetFlashState(_flashState);
}
AdaptToOrientation();
ViewfinderVideoBrush.SetSource(_device);
if (PhotoCaptureDevice.IsFocusSupported(SENSOR_LOCATION))
{
Microsoft.Devices.CameraButtons.ShutterKeyHalfPressed += CameraButtons_ShutterKeyHalfPressed;
}
Microsoft.Devices.CameraButtons.ShutterKeyPressed += CameraButtons_ShutterKeyPressed;
}
