BitmapDecoder .GetPixelDataAsync(params) changing the orientation of captured image - windows-phone-8.1

Question

I am working with an UWP app and facing an issue while displaying a camera captured image(Portrait) in an image control.If I use parmaterized version
decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8, // WriteableBitmap uses BGRA format
BitmapAlphaMode.Ignore,
transform,
ExifOrientationMode.IgnoreExifOrientation, // This sample ignores Exif orientation
ColorManagementMode.DoNotColorManage);
The outcome is image with change in orientation of 90 degree in anticlock direction. //Issue
Oriented Normal
However default decoder.GetPixelDataAsync();works fine.
Problem here is I cannot use default version of GetPixelDataSync() as I need to scale the image using BitmapTransformation.
Please help.
Complete Code:
public async Task PrepareCapturedImage(StorageFile originalFile)
{
try
{
BitmapImage capturedImage_ = new BitmapImage();
BitmapDecoder decoder = null;
// the image is sometimes not created and we are trying to access it
await Task.Delay(300);
using (IRandomAccessStream stream = await originalFile.OpenAsync(FileAccessMode.Read))
{
capturedImage_.SetSource(stream);
decoder = await BitmapDecoder.CreateAsync(stream);
}
BitmapTransform transform = new BitmapTransform();
uint newHeight = Convert.ToUInt32(capturedImage_.PixelHeight);
uint newWidth = Convert.ToUInt32(capturedImage_.PixelWidth);
transform.ScaledHeight = newHeight;
transform.ScaledWidth = newWidth;
PixelDataProvider pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8, // WriteableBitmap uses BGRA format
BitmapAlphaMode.Ignore,
transform,
ExifOrientationMode.IgnoreExifOrientation, // This sample ignores Exif orientation
ColorManagementMode.DoNotColorManage);
// An array containing the decoded image data, which could be modified before being displayed
byte[] sourcePixels = pixelData.DetachPixelData();
using (InMemoryRandomAccessStream ras = new InMemoryRandomAccessStream())
{
BitmapEncoder enc = null;
BitmapPropertySet propertySet = new BitmapPropertySet();
enc = await BitmapEncoder.CreateAsync(BitmapEncoder.JpegEncoderId, ras, propertySet);
// write the pixel data to our stream
enc.SetPixelData(decoder.BitmapPixelFormat, decoder.BitmapAlphaMode, newWidth, newHeight, decoder.DpiX, decoder.DpiY, sourcePixels);
await enc.FlushAsync();
ras.Seek(0);
BitmapImage image = new BitmapImage();
image.SetSource(ras);
cameraOutputImage.Source = image;
}
}
catch (Exception ex)
{
}
}