ios capturing image using AVFramework

Question

I\'m capturing images using this code

#pragma mark - image capture

// Create and configure a capture session and start it running
- (void)setupCaptureSessio         


        

Answer 1

And here is a Swift version of imageFromSampleBuffer function:

func imageFromSampleBuffer(sampleBuffer:CMSampleBuffer!) -> UIImage {
    let imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer)!
    CVPixelBufferLockBaseAddress(imageBuffer, 0)

    let baseAddress = CVPixelBufferGetBaseAddress(imageBuffer)
    let bytesPerRow = CVPixelBufferGetBytesPerRow(imageBuffer)
    let width = CVPixelBufferGetWidth(imageBuffer)
    let height = CVPixelBufferGetHeight(imageBuffer)

    let colorSpace = CGColorSpaceCreateDeviceRGB()

    let bitmapInfo:CGBitmapInfo = [.ByteOrder32Little, CGBitmapInfo(rawValue: CGImageAlphaInfo.PremultipliedFirst.rawValue)]
    let context = CGBitmapContextCreate(baseAddress, width, height, 8, bytesPerRow, colorSpace, bitmapInfo.rawValue)

    let quartzImage = CGBitmapContextCreateImage(context)
    CVPixelBufferUnlockBaseAddress(imageBuffer, 0)

    let image = UIImage(CGImage: quartzImage!)
    return image
}

Above working for me with following video settings:

videoDataOutput = AVCaptureVideoDataOutput()
videoDataOutput?.videoSettings = [kCVPixelBufferPixelFormatTypeKey:Int(kCVPixelFormatType_32BGRA)]
            videoDataOutput?.setSampleBufferDelegate(self, queue: queue)