btomtom5

func drawSolidCircle(imageBuffer: CVPixelBuffer, pnt: (Int, Int), radius: Int) {
    /*
     Marks CVPixelBuffer with a solid green circle of radius r
     imageBuffer: CVPixelBuffer needs to be already locked and available for write access.
     */
    
    CVPixelBufferLockBaseAddress(imageBuffer, .init(rawValue: 0))
    let width: Int = CVPixelBufferGetWidth(imageBuffer)
    let height: Int = CVPixelBufferGetHeight(imageBuffer)
    

btomtom5

func fixOrientation(uiImage: UIImage) -> UIImage{
        // No-op if the orientation is already correct
        if ( uiImage.imageOrientation == UIImageOrientation.up ) {
            return UIImage(cgImage: uiImage.cgImage!, scale: uiImage.scale, orientation: uiImage.imageOrientation)
        }
        
        // We need to calculate the proper transformation to make the image upright.
        // We do it in 2 steps: Rotate if Left/Right/Down, and then flip if Mirrored.
        var transform: CGAffineTransform = CGAffineTransform.identity
        

btomtom5

func getImage(cvPixelBuffer: CVPixelBuffer) -> UIImage{
        CVPixelBufferLockBaseAddress(cvPixelBuffer, CVPixelBufferLockFlags.readOnly)
        let colorSpace:CGColorSpace = CGColorSpaceCreateDeviceGray()
        let bitsPerComponent = 8 // Look at the quartz 2-D programming guide(Graphic Context)
        
        let targetWidth = CVPixelBufferGetWidthOfPlane(cvPixelBuffer, 0)
        let targetHeight = CVPixelBufferGetHeightOfPlane(cvPixelBuffer, 0)
        
        let bytesPerRow = CVPixelBufferGetBytesPerRowOfPlane(cvPixelBuffer, 0)
        let baseAddress = CVPixelBufferGetBaseAddressOfPlane(cvPixelBuffer, 0)