使用自定义相机Swift 3拍照
使用自定义相机Swift 3拍照
提问于 2016-10-15 11:13:45
在Swift 2.3中，我使用此代码在自定义摄像机中拍摄了一张照片：
func didPressTakePhoto(){
if let videoConnection = stillImageOutput!.connection(withMediaType: AVMediaTypeVideo) {
stillImageOutput?.captureStillImageAsynchronouslyFromConnection(videoConnection, completionHandler: { (sampleBuffer, error) -> Void in
if sampleBuffer != nil {
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
let dataProvider = CGDataProviderCreateWithCFData(imageData)
let cgImageRef = CGImageCreateWithJPEGDataProvider(dataProvider, nil, true, CGColorRenderingIntent.RenderingIntentDefault)
let image = UIImage(CGImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.Right)
self.captureImageView.image = image
}
})
}
}但他的台词是：stillImageOutput?.captureStillImageAsynchronouslyFromConnection(videoConnection, completionHandler: { (sampleBuffer, error) -> Void in
显示此错误：
类型'AVCapturePhotoOutput‘的值没有成员AVCapturePhotoOutput
我试着解决我的问题，但我总是得到越来越多的错误，这就是为什么我张贴我的原始代码。
有人知道如何让我的代码再次工作吗？
谢谢。
回答 3
Stack Overflow用户
回答已采纳
发布于 2016-11-02 22:32:12
感谢Sharpkit，我找到了我的解决方案(这段代码适用于我)：
func capture(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhotoSampleBuffer photoSampleBuffer: CMSampleBuffer?, previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: Error?) {
if let error = error {
print(error.localizedDescription)
}
if let sampleBuffer = photoSampleBuffer, let previewBuffer = previewPhotoSampleBuffer,
let dataImage = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: sampleBuffer, previewPhotoSampleBuffer: previewBuffer) {
let imageData = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: sampleBuffer, previewPhotoSampleBuffer: nil)
let dataProvider = CGDataProvider(data: imageData as! CFData)
let cgImageRef = CGImage(jpegDataProviderSource: dataProvider!, decode: nil, shouldInterpolate: true, intent: CGColorRenderingIntent.absoluteColorimetric)
let image = UIImage(cgImage: cgImageRef!, scale: 1.0, orientation: UIImageOrientation.right)
let cropedImage = self.cropToSquare(image: image)
let newImage = self.scaleImageWith(cropedImage, and: CGSize(width: 600, height: 600))
print(UIScreen.main.bounds.width)
self.tempImageView.image = newImage
self.tempImageView.isHidden = false
} else {
}
}Stack Overflow用户
发布于 2016-10-15 12:17:28
您可以在Swift 3中这样使用AVCapturePhotoOutput：
您需要返回AVCapturePhotoCaptureDelegate的CMSampleBuffer。
如果您告诉AVCapturePhotoSettings previewFormat，您也可以获得预览图像。
class CameraCaptureOutput: NSObject, AVCapturePhotoCaptureDelegate {
let cameraOutput = AVCapturePhotoOutput()
func capturePhoto() {
let settings = AVCapturePhotoSettings()
let previewPixelType = settings.availablePreviewPhotoPixelFormatTypes.first!
let previewFormat = [kCVPixelBufferPixelFormatTypeKey as String: previewPixelType,
kCVPixelBufferWidthKey as String: 160,
kCVPixelBufferHeightKey as String: 160,
]
settings.previewPhotoFormat = previewFormat
self.cameraOutput.capturePhoto(with: settings, delegate: self)
}
func capture(_ captureOutput: AVCapturePhotoOutput, didFinishProcessingPhotoSampleBuffer photoSampleBuffer: CMSampleBuffer?, previewPhotoSampleBuffer: CMSampleBuffer?, resolvedSettings: AVCaptureResolvedPhotoSettings, bracketSettings: AVCaptureBracketedStillImageSettings?, error: NSError?) {
if let error = error {
print(error.localizedDescription)
}
if let sampleBuffer = photoSampleBuffer, let previewBuffer = previewPhotoSampleBuffer, let dataImage = AVCapturePhotoOutput.jpegPhotoDataRepresentation(forJPEGSampleBuffer: sampleBuffer, previewPhotoSampleBuffer: previewBuffer) {
print(image: UIImage(data: dataImage).size)
} else {
}
}
}Stack Overflow用户
发布于 2017-02-09 05:40:50
好密码。谢谢你的帮助和例子。
为了澄清像我这样心智能力较慢的人，捕获(_ ...etc)方法在您的takePhoto (或您命名的)方法中调用self.cameraOutput.capturePhoto(具有:设置、委托: self)时在幕后调用。您永远不会亲自直接调用捕获方法。是自动发生的。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/40058320
复制相关文章
相似问题
腾讯云开发者
