How to convert AVCaptureStillImageOutput to UIImage and save as NSData? - ios

Question

I am trying to send a photo with the app I am working on, I have made the app to take a photo and then when you tap on send it would send the photo you just took to send it through mail.
But I don't know how to convert the photo that is of type AVCaptureStillImageOutput to UIImage and store it in a NSData in order to use it as an attachment in addAttachmentData.
I tried to do this:
let data: NSData = UIImagePNGRepresentation(image: stillImageOutput)
I have this function
func doSomethingWithImage(image: UIImage) {
// do something here
mc.addAttachmentData(UIImageJPEGRepresentation(UIImage(named: imageAsUIIMage)!, CGFloat(1.0))!, mimeType: "image/jpeg", fileName: "backupOne.jpeg")
}
But It shows me an error, "Use of unresolved identifier 'imageAsUIIMage'
I want to get the UIImage in order to send it through an e-mail.

Answer 1

You can get capture an image and save it to file and convert it to UIImage using stillImageOutput.captureStillImageAsynchronouslyFromConnection()
// setup code
stillImageOutput.outputSettings = [AVVideoCodecKey: AVVideoCodecJPEG]
captureSession.startRunning()
let connection = stillImageOutput.connectionWithMediaType(AVMediaTypeVideo)
stillImageOutput.captureStillImageAsynchronouslyFromConnection(connection) { (sampleBuffer, error) in
// NSData of jpeg data. Save to file and add as email attachment.
let jpegData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
dispatch_async(dispatch_get_main_queue(), {
self.doSomethingWithJPEGImageData(jpegData!)
})
}
// later on
func doSomethingWithJPEGImageData(jpegData: NSData) {
mc.addAttachmentData(jpegData, mimeType: "image/jpeg", fileName: "backupOne.jpeg")
}