ios – AVMediaTypeVideo捕获静止图像方向

概述我已经看到了这个问题的其他几乎答案,但似乎无法让它工作.我正在从AVMediaTypeVideo捕捉一个图像,它的方向总是UI ImageOrientation 3(我不知道这在现实中意味着什么). 我试图使用状态栏方向纠正它,但似乎没有任何影响.我不需要将这些图像保存到相机胶卷,它现在就在那里验证.我不确定这对方向是否有任何影响. import UIKitimport AVFoundation 我已经看到了这个问题的其他几乎答案,但似乎无法让它工作.我正在从AVMediaTypeVIDeo捕捉一个图像,它的方向总是UI ImageOrIEntation 3(我不知道这在现实中意味着什么).

我试图使用状态栏方向纠正它,但似乎没有任何影响.我不需要将这些图像保存到相机胶卷,它现在就在那里验证.我不确定这对方向是否有任何影响.

import UIKitimport AVFoundationclass VIEwController: UIVIEwController {let captureSession = AVCaptureSession()let stillimageOutput = AVCaptureStillimageOutput()var avCaptureVIDeoPrevIEw : AVCaptureVIDeoPrevIEwLayer?var error: NSError?overrIDe func vIEwDIDLoad() {    super.vIEwDIDLoad()    let devices = AVCaptureDevice.devices().filter{ 
import UIKitimport AVFoundationclass VIEwController: UIVIEwController {let captureSession = AVCaptureSession()let stillimageOutput = AVCaptureStillimageOutput()var avCaptureVIDeoPrevIEw : AVCaptureVIDeoPrevIEwLayer?var error: NSError?overrIDe func vIEwDIDLoad() {    super.vIEwDIDLoad()    let devices = AVCaptureDevice.devices().filter{ .hasMediaType(AVMediaTypeVIDeo) }    if let captureDevice = devices.first as? AVCaptureDevice  {        captureSession.addinput(AVCaptureDeviceinput(device: captureDevice,action:"savetoCamera:"))            vIEw.addSubvIEw(cameraPrevIEw)        }    }    // Add a selfIE button if device is capable    for device in devices {        if device.position == AVCaptureDeviceposition.Front {            // Add selfIE button            println("selfIE capable")        }    }}overrIDe func vIEwWillLayoutSubvIEws() {    if avCaptureVIDeoPrevIEw != nil {        // OrIEntation        if (avCaptureVIDeoPrevIEw!.connection.supportsVIDeoOrIEntation == true) {            var newOrIEntation : AVCaptureVIDeoOrIEntation?            switch UIDevice.currentDevice().orIEntation {            case UIDeviceOrIEntation.Portrait:                newOrIEntation = AVCaptureVIDeoOrIEntation.Portrait            case UIDeviceOrIEntation.PortraitUpsIDeDown:                newOrIEntation = AVCaptureVIDeoOrIEntation.PortraitUpsIDeDown            case UIDeviceOrIEntation.Landscapeleft:                newOrIEntation = AVCaptureVIDeoOrIEntation.LandscapeRight;            case UIDeviceOrIEntation.LandscapeRight:                newOrIEntation = AVCaptureVIDeoOrIEntation.Landscapeleft            default:                newOrIEntation = AVCaptureVIDeoOrIEntation.Portrait            }            avCaptureVIDeoPrevIEw!.connection.vIDeoOrIEntation = newOrIEntation!        }        // Frame         avCaptureVIDeoPrevIEw!.bounds = CGRectMake(0.0,vIEw.bounds.mIDY)        avCaptureVIDeoPrevIEw!.vIDeoGravity = AVLayerVIDeoGravityResizeAspectFill    }}func savetoCamera(sender: UITapGestureRecognizer) {    if let vIDeoConnection = stillimageOutput.connectionWithMediaType(AVMediaTypeVIDeo) {        stillimageOutput.captureStillimageAsynchronouslyFromConnection(vIDeoConnection) {            (imageDataSampleBuffer,error) -> VoID in            var image = UIImage(data: AVCaptureStillimageOutput.jpegStillimageNSDataRepresentation(imageDataSampleBuffer))            var imageOrIEntation : UIImageOrIEntation?            switch UIDevice.currentDevice().orIEntation {            case UIDeviceOrIEntation.PortraitUpsIDeDown:                imageOrIEntation = UIImageOrIEntation.left            case UIDeviceOrIEntation.LandscapeRight:                imageOrIEntation = UIImageOrIEntation.Down            case UIDeviceOrIEntation.Landscapeleft:                imageOrIEntation = UIImageOrIEntation.Up            case UIDeviceOrIEntation.Portrait:                imageOrIEntation = UIImageOrIEntation.Right            default:                imageOrIEntation = UIImageOrIEntation.Right            }            var newImage = UIImage(CGImage: image!.CGImage,orIEntation: imageOrIEntation!)            UIImageWritetoSavedPhotosAlbum(newImage!,nil)        }    }}overrIDe func dIDReceiveMemoryWarning() {    super.dIDReceiveMemoryWarning()}}
.hasMediaType(AVMediaTypeVIDeo) }    if let captureDevice = devices.first as? AVCaptureDevice  {        captureSession.addinput(AVCaptureDeviceinput(device: captureDevice,error: &error))        captureSession.sessionPreset = AVCaptureSessionPresetMedium        captureSession.startRunning()        stillimageOutput.outputSettings = [AVVIDeoCodecKey:AVVIDeoCodecJPEG]        if captureSession.canAddOutput(stillimageOutput) {            captureSession.addOutput(stillimageOutput)        }        avCaptureVIDeoPrevIEw = AVCaptureVIDeoPrevIEwLayer(session: captureSession)        if let prevIEwLayer = avCaptureVIDeoPrevIEw {            prevIEwLayer.bounds = CGRectMake(0.0,0.0,vIEw.bounds.size.wIDth,vIEw.bounds.size.height)            prevIEwLayer.position = CGPointMake(vIEw.bounds.mIDX,vIEw.bounds.mIDY)            prevIEwLayer.vIDeoGravity = AVLayerVIDeoGravityResizeAspectFill            let cameraPrevIEw = UIVIEw(frame: CGRectMake(0.0,vIEw.bounds.size.height))            cameraPrevIEw.layer.addSublayer(prevIEwLayer)            cameraPrevIEw.addGestureRecognizer(UITapGestureRecognizer(target: self,action:"savetoCamera:"))            vIEw.addSubvIEw(cameraPrevIEw)        }    }    // Add a selfIE button if device is capable    for device in devices {        if device.position == AVCaptureDeviceposition.Front {            // Add selfIE button            println("selfIE capable")        }    }}overrIDe func vIEwWillLayoutSubvIEws() {    if avCaptureVIDeoPrevIEw != nil {        // OrIEntation        if (avCaptureVIDeoPrevIEw!.connection.supportsVIDeoOrIEntation == true) {            avCaptureVIDeoPrevIEw!.connection.vIDeoOrIEntation = interfaceOrIEntationToVIDeoOrIEntation(UIApplication.sharedApplication().statusbarOrIEntation)        }        // Frame         avCaptureVIDeoPrevIEw!.bounds = CGRectMake(0.0,vIEw.bounds.size.height)        avCaptureVIDeoPrevIEw!.position = CGPointMake(vIEw.bounds.mIDX,vIEw.bounds.mIDY)        avCaptureVIDeoPrevIEw!.vIDeoGravity = AVLayerVIDeoGravityResizeAspectFill    }}func interfaceOrIEntationToVIDeoOrIEntation(orIEntation: UIInterfaceOrIEntation) -> AVCaptureVIDeoOrIEntation {    switch orIEntation {    case UIInterfaceOrIEntation.Portrait:        return AVCaptureVIDeoOrIEntation.Portrait    case UIInterfaceOrIEntation.PortraitUpsIDeDown:        return AVCaptureVIDeoOrIEntation.PortraitUpsIDeDown    case UIInterfaceOrIEntation.Landscapeleft:        return AVCaptureVIDeoOrIEntation.Landscapeleft    case UIInterfaceOrIEntation.LandscapeRight:        return AVCaptureVIDeoOrIEntation.LandscapeRight    default:        return AVCaptureVIDeoOrIEntation.Portrait    }}func savetoCamera(sender: UITapGestureRecognizer) {    if let vIDeoConnection = stillimageOutput.connectionWithMediaType(AVMediaTypeVIDeo) {        stillimageOutput.captureStillimageAsynchronouslyFromConnection(vIDeoConnection) {            (imageDataSampleBuffer,error) -> VoID in            var image = UIImage(data: AVCaptureStillimageOutput.jpegStillimageNSDataRepresentation(imageDataSampleBuffer))            // this is not working            var orIEntation : UIImageOrIEntation?            switch UIApplication.sharedApplication().statusbarOrIEntation.rawValue {            case 1:                orIEntation = UIImageOrIEntation.Up            case 3:                orIEntation = UIImageOrIEntation.left            case 4:                orIEntation = UIImageOrIEntation.Right            default:                orIEntation = UIImageOrIEntation.Up            }            let newImage = UIImage(CGImage: image?.CGImage,scale: 1.0,orIEntation: orIEntation!)            UIImageWritetoSavedPhotosAlbum(newImage,nil,nil)        }    }}overrIDe func dIDReceiveMemoryWarning() {    super.dIDReceiveMemoryWarning()}}

解决方法 编辑,这不适用于使用前置摄像头拍摄的照片,它们在原生照片应用程序中显示正常,但在Mac上的照片中共享或从parse.com加载时不能显示.

感谢@XJones在这里回答Why does AVCaptureVideoOrientation landscape modes result in upside down still images?

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