private void Uninitialize()
{
if (_mediaElement != null)
{
_mediaElement.Source = null;
_mediaElement = null;
}
if (_cameraStreamSource != null)
{
_cameraStreamSource = null;
}
if (_photoCaptureDevice != null)
{
_photoCaptureDevice.Dispose();
_photoCaptureDevice = null;
}
}
private async Task Initialize()
{
var resolution = PhotoCaptureDevice.GetAvailableCaptureResolutions(_cameraLocation).First();
_photoCaptureDevice = await PhotoCaptureDevice.OpenAsync(_cameraLocation, resolution);
Windows.Foundation.Size PreviewResolution;
foreach (var res in PhotoCaptureDevice.GetAvailablePreviewResolutions(_cameraLocation).ToArray().Reverse())
{
try
{
await _photoCaptureDevice.SetPreviewResolutionAsync(res);
PreviewResolution = res;
break;
}
catch (Exception e)
{
}
}
_cameraStreamSource = new CameraStreamSource(_photoCaptureDevice, PreviewResolution);
_mediaElement = new MediaElement();
_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);
AdjustOrientation();
}