macos - CVPixelBufferRef 到 NSImage

Question

如何将 CVPixelBufferRef 转换为 NSImage 或 CGImageRef？我需要能够在核心动画层中显示像素缓冲区的内容。

Answer 1

要将缓冲区转换为图像，您需要先将缓冲区转换为CIImage，然后可以将其转换为NSImage。

let ciImage = CIImage(cvImageBuffer: pixelBuffer)

let context = CIContext(options: nil)

从这里您可以同时访问GCImage和NSImage：

let width = CVPixelBufferGetWidth(pixelBuffer)
let height = CVPixelBufferGetHeight(pixelBuffer)

let cgImage = context.createCGImage(ciImage, from: CGRect(x: 0, y: 0, width: width, height: height))

let nsImage = NSImage(cgImage: cgImage, size: CGSize(width: width, height: height))