ios - AVFoundation CaptureStillImage issue with orientation of result image -
i have custom camera view controller uses avfoundation capture still image can see here: 
my issue once capture image, orientation sideways can see here
my code follows:
var captureinput: avcaptureinput? var stillimageoutput: avcapturestillimageoutput? var previewlayer: avcapturevideopreviewlayer? var currentdevice: avcapturedevice? var currentlayer: avcapturevideopreviewlayer? @ibaction func capturebuttontap(sender: uibutton) { if(!capturingphoto){ capturingphoto = true if let videoconnection = stillimageoutput!.connectionwithmediatype(avmediatypevideo) { dispatch_async(dispatch_get_global_queue(dispatch_queue_priority_default, 0)) { videoconnection.videoorientation = avcapturevideoorientation.portrait self.stillimageoutput?.capturestillimageasynchronouslyfromconnection(videoconnection, completionhandler: {(samplebuffer, error) in if (samplebuffer != nil) { var imagedata = avcapturestillimageoutput.jpegstillimagensdatarepresentation(samplebuffer) var image = uiimage(data: imagedata) var imagewidth = image?.size.width var croprect = cgrect(x: 0, y: 0, width: imagewidth!, height: imagewidth!) var imageref: cgimageref = cgimagecreatewithimageinrect(image!.cgimage, croprect) var croppedimage: uiimage = uiimage(cgimage: imageref)! self.imagepreview.image = croppedimage self.image = croppedimage self.switchmodetopreview() } }) } } } } func initcamerasession(){ configuredevice() nslog(string(selectedcamera)) capturesession = avcapturesession() capturesession!.sessionpreset = avcapturesessionpresetphoto if(selectedcamera == 0){ var backcamera = avcapturedevice.defaultdevicewithmediatype(avmediatypevideo) currentdevice = backcamera }else if(selectedcamera == 1){ var frontcamera = frontcameraifavalible() currentdevice = frontcamera } if(currentdevice == nil){ nsexception(name: "error", reason: "device has no camera.", userinfo: nil) } updatebuttons() var error: nserror? var input = avcapturedeviceinput(device: currentdevice, error: &error) if error == nil && capturesession!.canaddinput(input) { capturesession!.addinput(input) captureinput = input stillimageoutput = avcapturestillimageoutput() stillimageoutput!.outputsettings = [avvideocodeckey: avvideocodecjpeg] if capturesession!.canaddoutput(stillimageoutput) { capturesession!.addoutput(stillimageoutput) previewlayer = avcapturevideopreviewlayer(session: capturesession) previewlayer!.videogravity = avlayervideogravityresizeaspectfill previewlayer!.connection?.videoorientation = avcapturevideoorientation.portrait camerapreview.layer.addsublayer(previewlayer) previewlayer?.frame = cgrect(x: 0.0, y: 0.0, width: self.view.bounds.width, height: self.view.bounds.width + 139) if(currentlayer != nil){ currentlayer!.removefromsuperlayer() } currentlayer = previewlayer! capturesession!.startrunning() } } } please aware have left code out on purpose , if need further information, request it. help.
try using this, use transform buttons on view when rotate device. can used image taken. recall standard transformation rotation matrices linear algebra if have ever taken class. basically, alter code rotate frame of image have captured , make sure set frame bounds view's frame in order have fit correctly in view. may more complicated need be, have never had issue before images. keep in mind being called due rotation change observer has been registered, may not need use. underlying concept used lot
any time have rotation issues, use this.
/************************************************************************** device orientation did change **************************************************************************/ func deviceorientationdidchange() { println("device orientation did change called") let orientation: uideviceorientation = uidevice.currentdevice().orientation //------ ignore these orientations ------ if orientation == uideviceorientation.faceup || orientation == uideviceorientation.facedown || orientation == uideviceorientation.unknown || orientation == uideviceorientation.portraitupsidedown || self.currentorientation == orientation { println("device orientation not need change --- returning...") return } self.currentorientation = orientation //------ apply rotation using standard rotation transformation matrix in r3 ------ /* x y z --- --- x | cosø sinø 0 | y | -sinø consø 0 | z | 0 0 1 | --- --- */ //----- perform button , video data buffer rotations ------ switch orientation { case uideviceorientation.portrait: println("device orientation portrait") if self.usingfrontcamera == true { } else { self.playbacktransformation = cgaffinetransformmakerotation(self.degrees0) self.switchcapturesession.transform = self.playbacktransformation! self.switchcapturesession.frame = self.view.bounds self.flipcamera.transform = self.playbacktransformation! self.flipcamera.frame = self.view.bounds self.capturebutton.transform = self.playbacktransformation! self.capturebutton.frame = self.view.bounds } break case uideviceorientation.landscapeleft: println("device orientation landscapeleft") if self.usingfrontcamera == true { } else { self.playbacktransformation = cgaffinetransformmakerotation(cgfloat(self.degrees90)) self.switchcapturesession.transform = self.playbacktransformation! self.switchcapturesession.frame = self.view.bounds self.flipcamera.transform = self.playbacktransformation! self.flipcamera.frame = self.view.bounds self.capturebutton.transform = self.playbacktransformation! self.capturebutton.frame = self.view.bounds } break case uideviceorientation.landscaperight: println("device orientation landscaperight") if self.usingfrontcamera == true { } else { self.playbacktransformation = cgaffinetransformmakerotation(-self.degrees90) self.switchcapturesession.transform = self.playbacktransformation! self.switchcapturesession.frame = self.view.bounds self.flipcamera.transform = self.playbacktransformation! self.flipcamera.frame = self.view.bounds self.capturebutton.transform = self.playbacktransformation! self.capturebutton.frame = self.view.bounds } break default: break } affine transformation great rotations. there may function sets default image orientation when captured. check apple's references.
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