private void Uninitialize()
{
StatusTextBlock.Text = "";
if (_mediaElement != null)
{
_mediaElement.Source = null;
_mediaElement = null;
}
if (_cameraStreamSource != null)
{
_cameraStreamSource.FrameRateChanged -= CameraStreamSource_FPSChanged;
_cameraStreamSource = null;
}
_cameraEffect = null;
if (_photoCaptureDevice != null)
{
_photoCaptureDevice.Dispose();
_photoCaptureDevice = null;
}
}
private async void Initialize()
{
StatusTextBlock.Text = AppResources.MainPage_StatusTextBlock_StartingCamera;
var resolution = PhotoCaptureDevice.GetAvailablePreviewResolutions(CameraSensorLocation.Back).Last();
_photoCaptureDevice = await PhotoCaptureDevice.OpenAsync(CameraSensorLocation.Back, resolution);
await _photoCaptureDevice.SetPreviewResolutionAsync(resolution);
_cameraEffect = new NokiaImagingSDKEffects();
_cameraEffect.PhotoCaptureDevice = _photoCaptureDevice;
_cameraStreamSource = new CameraStreamSource(_cameraEffect, resolution);
_cameraStreamSource.FrameRateChanged += CameraStreamSource_FPSChanged;
_mediaElement = new MediaElement();
_mediaElement.Stretch = Stretch.UniformToFill;
_mediaElement.BufferingTime = new TimeSpan(0);
_mediaElement.SetSource(_cameraStreamSource);
// Using VideoBrush in XAML instead of MediaElement, because otherwise
// CameraStreamSource.CloseMedia() does not seem to be called by the framework:/
BackgroundVideoBrush.SetSource(_mediaElement);
_cameraEffect.PreviousEffect();
StatusTextBlock.Text = _cameraEffect.EffectName;
}
