如何防止模态UIImagePickerController旋转？

extension UIImage {
    func fixOrientation() -> UIImage {
        if self.imageOrientation == .up {
            return self
        }
        
        UIGraphicsBeginImageContextWithOptions(self.size, false, self.scale)
        self.draw(in: CGRect(x: 0, y: 0, width: self.size.width, height: self.size.height))
        let normalizedImage = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        return normalizedImage ?? self
    }
}

extension UIImage {
    func fixOrientation() -> UIImage {
        guard let cgImage = self.cgImage else {
            return self
        }
        
        if self.imageOrientation == .up {
            return self
        }
        
        var transform = CGAffineTransform.identity
        
        switch self.imageOrientation {
        case .down, .downMirrored:
            transform = transform.translatedBy(x: self.size.width, y: self.size.height)
            transform = transform.rotated(by: CGFloat.pi)
        case .left, .leftMirrored:
            transform = transform.translatedBy(x: self.size.width, y: 0)
            transform = transform.rotated(by: CGFloat.pi / 2)
        case .right, .rightMirrored:
            transform = transform.translatedBy(x: 0, y: self.size.height)
            transform = transform.rotated(by: -CGFloat.pi / 2)
        default:
            break
        }
        
        switch self.imageOrientation {
        case .upMirrored, .downMirrored:
            transform = transform.translatedBy(x: self.size.width, y: 0)
            transform = transform.scaledBy(x: -1, y: 1)
        case .leftMirrored, .rightMirrored:
            transform = transform.translatedBy(x: self.size.height, y: 0)
            transform = transform.scaledBy(x: -1, y: 1)
        default:
            break
        }
        
        guard let colorSpace = cgImage.colorSpace,
              let context = CGContext(data: nil, width: Int(self.size.width), height: Int(self.size.height), bitsPerComponent: cgImage.bitsPerComponent, bytesPerRow: 0, space: colorSpace, bitmapInfo: cgImage.bitmapInfo.rawValue) else {
            return self
        }
        
        context.concatenate(transform)
        
        switch self.imageOrientation {
        case .left, .leftMirrored, .right, .rightMirrored:
            context.draw(cgImage, in: CGRect(x: 0, y: 0, width: self.size.height, height: self.size.width))
        default:
            context.draw(cgImage, in: CGRect(x: 0, y: 0, width: self.size.width, height: self.size.height))
        }
        
        guard let newCGImage = context.makeImage() else {
            return self
        }
        
        return UIImage(cgImage: newCGImage)
    }
}