Swift 3中的AVCaptureSession到UIImage的Erros(Erros with AVCaptureSession to UIImage in Swift 3)

 这是我的设置： 
 
let captureSession = AVCaptureSession()
captureSession.sessionPreset = AVCaptureSessionPresetPhoto

let backCamera = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)

do {
    let input = try AVCaptureDeviceInput(device: backCamera)
    captureSession.addInput(input)
} catch {
    print("can't access camera")
    return
}

let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
self.view.layer.addSublayer(previewLayer!)

let videoOutput = AVCaptureVideoDataOutput()
videoOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "sample buffer delegate", attributes: .concurrent))

captureSession.addOutput(videoOutput)
captureSession.startRunning()

let pixelBuffer = CMSampleBufferGetImageBuffer(CMSampleBuffer)
let cameraImage = CIImage(cvImageBuffer: pixelBuffer!)


let comicEffect = CIFilter(name: "CIComicEffect")

comicEffect!.setValue(cameraImage, forKey: kCIInputImageKey)

let filteredImage = UIImage(ciImage: comicEffect!.value(forKey: kCIOutputImageKey) as! CIImage!)

DispatchQueue.main.async() {
    let image_view = UIImageView(image: filteredImage)
    self.view = image_view
}
 
 我收到两个错误。 第一个错误是setSampleBufferDelegate（）： 
 
Cannot convert value of type 'ViewController' to expected argument type 'AVCaptureVideoDataOutputSampleBufferDelegate!'
 
 第二个错误是CMSampleBufferGetImageBuffer（）： 
 
Cannot convert value of type '(CMSampleBuffer).Type' (aka 'CMSampleBuffer.Type') to expected argument type 'CMSampleBuffer'
 
 剂量谁知道我可能做错了什么？ 

Here's my setup:
 
let captureSession = AVCaptureSession()
captureSession.sessionPreset = AVCaptureSessionPresetPhoto

let backCamera = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeVideo)

do {
    let input = try AVCaptureDeviceInput(device: backCamera)
    captureSession.addInput(input)
} catch {
    print("can't access camera")
    return
}

let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
self.view.layer.addSublayer(previewLayer!)

let videoOutput = AVCaptureVideoDataOutput()
videoOutput.setSampleBufferDelegate(self, queue: DispatchQueue(label: "sample buffer delegate", attributes: .concurrent))

captureSession.addOutput(videoOutput)
captureSession.startRunning()

let pixelBuffer = CMSampleBufferGetImageBuffer(CMSampleBuffer)
let cameraImage = CIImage(cvImageBuffer: pixelBuffer!)


let comicEffect = CIFilter(name: "CIComicEffect")

comicEffect!.setValue(cameraImage, forKey: kCIInputImageKey)

let filteredImage = UIImage(ciImage: comicEffect!.value(forKey: kCIOutputImageKey) as! CIImage!)

DispatchQueue.main.async() {
    let image_view = UIImageView(image: filteredImage)
    self.view = image_view
}
 
I'm getting two errors. The first error is with setSampleBufferDelegate():
 
Cannot convert value of type 'ViewController' to expected argument type 'AVCaptureVideoDataOutputSampleBufferDelegate!'
 
The second error is with CMSampleBufferGetImageBuffer():
 
Cannot convert value of type '(CMSampleBuffer).Type' (aka 'CMSampleBuffer.Type') to expected argument type 'CMSampleBuffer'
 
Dose anyone know what I could be doing wrong?

原文：https://stackoverflow.com/questions/43964239