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从avcapturepotelegate方法检索CVPixelBuffer

cvpixelbuffer avkit swift

0

mikro098 · 技术社区 · 6 年前

我想从中获取像素缓冲区 didFinishProcessingPhoto 委托方法,但它是零。

func capturePhoto() {
        let format = [AVVideoCodecKey: AVVideoCodecType.jpeg]
        let settings = AVCapturePhotoSettings(format: format)
        output.capturePhoto(with: settings, delegate: self)
    }

和扩展:

extension CaptureSessionManager: AVCapturePhotoCaptureDelegate {
    func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
        guard let pixelBuffer = photo.pixelBuffer else {
            return
        }

        bufferSubject.onNext(pixelBuffer)
    }
}

1 回复 | 直到 6 年前

1

0

mikro098 6 年前

我看了文件后自己想出来的。

AVCaptureSession.Preset.photo 作为一个 sessionPreset : session.sessionPreset = .photo

guard let availableRawFormat = self.output.availableRawPhotoPixelFormatTypes.first else {
            return
        }

let photoSettings = AVCapturePhotoSettings(rawPixelFormatType: availableRawFormat,
                                                   processedFormat: [AVVideoCodecKey : AVVideoCodecType.hevc])

output.capturePhoto(with: photoSettings, delegate: self)

processedFormat: 在里面 AVCapturePhotoSettings init是可选的。