CMSampleBuffer如何显示到View上.swift

sampleBuffer: CMSampleBuffer

guard let formatDesc = CMSampleBufferGetFormatDescription(sampleBuffer) else { return }

let dimension = CMVideoFormatDescriptionGetDimensions(formatDesc)

var ciImage = CIImage(cvImageBuffer: cvImageBuffer, options: nil)

// 负数是顺时针旋转
ciImage = ciImage.transformed(by: CGAffineTransform(rotationAngle: -1 * CGFloat.pi / 2))

// filter name list https://developer.apple.com/library/archive/documentation/GraphicsImaging/Reference/CoreImageFilterReference/#//apple_ref/doc/filter/ci/CIColorCube
//        let filter = CIFilter(name: "CIBoxBlur")
ciImage = ciImage.applyingFilter("CIBoxBlur")

print("handleBuffer \(ciImage.extent)")
guard let cgImage = _ciContext.createCGImage(ciImage, from: ciImage.extent) else { return }

DispatchQueue.main.async {
   self.preview.layer.contents = cgImage
}