CIFilter Rotates UIImage in Swift

Question

After applying CIFilter, the UIImage is being rotated 90 degrees. I'm surprised this issue is still happening after so many years. Is there a swift version of these fixes:

Better Fix: iOS UIImagePickerController result image orientation after upload

Original Fix: Using CoreImage to filter an image results in image rotation

Answer 1

How about this (where image is your UIImage):

let ciImage = CIImage(image: image)?.imageByApplyingOrientation(imageOrientationToTiffOrientation(image.imageOrientation))

func imageOrientationToTiffOrientation(value: UIImageOrientation) -> Int32
{
    switch (value)
    {
    case UIImageOrientation.Up:
        return 1
    case UIImageOrientation.Down:
        return 3
    case UIImageOrientation.Left:
        return 8
    case UIImageOrientation.Right:
        return 6
    case UIImageOrientation.UpMirrored:
        return 2
    case UIImageOrientation.DownMirrored:
        return 4
    case UIImageOrientation.LeftMirrored:
        return 5
    case UIImageOrientation.RightMirrored:
        return 7
    }
}