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Цель: перевести функцию PixelBuffer с iOS (UIImage) на macOS (NSImage)

Что я сделал: код ниже.

Проблема: я получаю пустое изображение

Если у кого-нибудь есть какой-либо вклад, я очень признателен! : )

iOS/UIImage

   func pixelBuffer(width: Int, height: Int, pixelFormatType: OSType,
                     colorSpace: CGColorSpace, alphaInfo: CGImageAlphaInfo) -> CVPixelBuffer? {
        var maybePixelBuffer: CVPixelBuffer?
        let attrs = [kCVPixelBufferCGImageCompatibilityKey: kCFBooleanTrue,
                     kCVPixelBufferCGBitmapContextCompatibilityKey: kCFBooleanTrue]
        let status = CVPixelBufferCreate(kCFAllocatorDefault,
                                         width,
                                         height,
                                         pixelFormatType,
                                         attrs as CFDictionary,
                                         amp;maybePixelBuffer)
        
        guard status == kCVReturnSuccess, let pixelBuffer = maybePixelBuffer else {
            return nil
        }
        
        CVPixelBufferLockBaseAddress(pixelBuffer, CVPixelBufferLockFlags(rawValue: 0))
        let pixelData = CVPixelBufferGetBaseAddress(pixelBuffer)
        
        guard let context = CGContext(data: pixelData,
                                      width: width,
                                      height: height,
                                      bitsPerComponent: 8,
                                      bytesPerRow: CVPixelBufferGetBytesPerRow(pixelBuffer),
                                      space: colorSpace,
                                      bitmapInfo: alphaInfo.rawValue)
            else {
                return nil
        }
        
        UIGraphicsPushContext(context)
        context.translateBy(x: 0, y: CGFloat(height))
        context.scaleBy(x: 1, y: -1)
        self.draw(in: CGRect(x: 0, y: 0, width: width, height: height))
        UIGraphicsPopContext()
        
        CVPixelBufferUnlockBaseAddress(pixelBuffer, CVPixelBufferLockFlags(rawValue: 0))
        return pixelBuffer
    }
 

macOS

     func pixelBuffer(width: Int, height: Int, pixelFormatType: OSType,
                     colorSpace: CGColorSpace, alphaInfo: CGImageAlphaInfo) -> CVPixelBuffer? {
        var maybePixelBuffer: CVPixelBuffer?
        let attrs = [kCVPixelBufferCGImageCompatibilityKey: kCFBooleanTrue,
                     kCVPixelBufferCGBitmapContextCompatibilityKey: kCFBooleanTrue]
        let status = CVPixelBufferCreate(kCFAllocatorDefault,
                                         width,
                                         height,
                                         pixelFormatType,
                                         attrs as CFDictionary,
                                         amp;maybePixelBuffer)
        
        guard status == kCVReturnSuccess, let pixelBuffer = maybePixelBuffer else {
            return nil
        }
        
        CVPixelBufferLockBaseAddress(pixelBuffer, CVPixelBufferLockFlags(rawValue: 0))
        let pixelData = CVPixelBufferGetBaseAddress(pixelBuffer)
        
        guard let context = CGContext(data: pixelData,
                                      width: width,
                                      height: height,
                                      bitsPerComponent: 8,
                                      bytesPerRow: CVPixelBufferGetBytesPerRow(pixelBuffer),
                                      space: colorSpace,
                                      bitmapInfo: alphaInfo.rawValue)
            else {
                return nil
        }
        
        
        context.saveGState()
        context.translateBy(x: 0, y: CGFloat(height))
        context.scaleBy(x: 1, y: -1)
        self.draw(in: CGRect(x: 0, y: 0, width: width, height: height))
        context.restoreGState()
       // NSGraphicsContext()


        CVPixelBufferUnlockBaseAddress(pixelBuffer, CVPixelBufferLockFlags(rawValue: 0))
        return pixelBuffer
    }
 ``