void UpdateButtonOrientation()
{
// Rotate the UI app bar button to match the rotation of the device
var angle = CameraRotationHelper.ConvertSimpleOrientationToClockwiseDegrees(_rotationHelper.GetUIOrientation());
var transform = new RotateTransform {
Angle = angle
};
_takePhotoButton.RenderTransform = transform;
}
async Task SetPreviewRotationAsync()
{
// Only update the orientation if the camera is mounted on the device
if (_externalCamera)
{
return;
}
// Add rotation metadata to the preview stream to ensure aspect ratio/dimensions match when rendering and getting preview frames
var orientation = _rotationHelper.GetCameraPreviewOrientation();
var properties = _mediaCapture.VideoDeviceController.GetMediaStreamProperties(MediaStreamType.VideoPreview);
properties.Properties.Add(RotationKey, CameraRotationHelper.ConvertSimpleOrientationToClockwiseDegrees(orientation));
await _mediaCapture.SetEncodingPropertiesAsync(MediaStreamType.VideoPreview, properties, null);
}