haikieu

var thePixelBuffer : CVPixelBuffer?

let testImage : UIImage = UIImage.init(named: "twdEnds.png")!
self.thePixelBuffer = self.pixelBufferFromImage(image: testImage)




func pixelBufferFromImage(image: UIImage) -> CVPixelBuffer {
        

haikieu

extension UIImage {
    
    func resize(size: CGSize) -> UIImage? {
        
        guard let cgImage = self.cgImage else { return nil}
        
        var format = vImage_CGImageFormat(bitsPerComponent: 8, bitsPerPixel: 32, colorSpace: nil,
                                          bitmapInfo: CGBitmapInfo(rawValue: CGImageAlphaInfo.first.rawValue),
                                          version: 0, decode: nil, renderingIntent: CGColorRenderingIntent.defaultIntent)
        var sourceBuffer = vImage_Buffer()

haikieu

extension UIImage {
    ///UIImage instance somtimes can be at any various orientation, so this method basically converts it back to default orientation.
    ///This is picked from the original source -> https://gist.github.com/schickling/b5d86cb070130f80bb40
    func fixedOrientation() -> UIImage? {
        
        guard imageOrientation != UIImageOrientation.up else {
            //This is correct orientation, don't need to do anything
            return self.copy() as? UIImage
        }