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Photo flash now works for front facing cameras

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This commit is contained in:
Andrew Walz 2017-01-06 19:54:30 -07:00
parent c400ae0118
commit 72b852fa4b
1 changed files with 61 additions and 21 deletions
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82
Source/SwiftyCamViewController.swift
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@ -296,32 +296,38 @@ open class SwiftyCamViewController: UIViewController {
*/
public func takePhoto() {
guard videoDevice != nil else {
guard let device = videoDevice else {
return
}
if videoDevice!.hasFlash && currentCamera == .rear && flashEnabled == true /* TODO: Add Support for Retina Flash and add front flash */ {
do {
try videoDevice!.lockForConfiguration()
videoDevice?.flashMode = .on
videoDevice!.unlockForConfiguration()
} catch {
print("[SwiftyCam]: \(error)")
}
}
if device.hasFlash == true && flashEnabled == true /* TODO: Add Support for Retina Flash and add front flash */ {
changeFlashSettings(device: device, mode: .on)
capturePhotoAsyncronously(completionHandler: { (_) in })
} else if device.hasFlash == false && flashEnabled == true && currentCamera == .front {
let flashView = UIView(frame: view.frame)
flashView.alpha = 0.0
flashView.backgroundColor = UIColor.white
view.addSubview(flashView)
if let videoConnection = photoFileOutput?.connection(withMediaType: AVMediaTypeVideo) {
videoConnection.videoOrientation = AVCaptureVideoOrientation.portrait
photoFileOutput?.captureStillImageAsynchronously(from: videoConnection, completionHandler: {(sampleBuffer, error) in
if (sampleBuffer != nil) {
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
let image = self.processPhoto(imageData!)
// Call delegate and return new image
self.cameraDelegate?.SwiftyCamDidTakePhoto(image)
}
UIView.animate(withDuration: 0.1, delay: 0.0, options: .curveEaseInOut, animations: {
flashView.alpha = 1.0
}, completion: { (_) in
self.capturePhotoAsyncronously(completionHandler: { (success) in
UIView.animate(withDuration: 0.1, delay: 0.0, options: .curveEaseInOut, animations: {
flashView.alpha = 0.0
}, completion: { (_) in
flashView.removeFromSuperview()
})
})
})
} else {
if device.isFlashActive == true {
changeFlashSettings(device: device, mode: .off)
}
capturePhotoAsyncronously(completionHandler: { (_) in })
}
}
@ -636,6 +642,26 @@ open class SwiftyCamViewController: UIViewController {
return image
}
fileprivate func capturePhotoAsyncronously(completionHandler: @escaping(Bool) -> ()) {
if let videoConnection = photoFileOutput?.connection(withMediaType: AVMediaTypeVideo) {
videoConnection.videoOrientation = AVCaptureVideoOrientation.portrait
photoFileOutput?.captureStillImageAsynchronously(from: videoConnection, completionHandler: {(sampleBuffer, error) in
if (sampleBuffer != nil) {
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(sampleBuffer)
let image = self.processPhoto(imageData!)
// Call delegate and return new image
self.cameraDelegate?.SwiftyCamDidTakePhoto(image)
completionHandler(true)
} else {
completionHandler(false)
}
})
} else {
completionHandler(false)
}
}
/// Handle pinch gesture
@objc fileprivate func zoomGesture(pinch: UIPinchGestureRecognizer) {
@ -733,6 +759,8 @@ open class SwiftyCamViewController: UIViewController {
}
}
/// Get Devices
fileprivate class func deviceWithMediaType(_ mediaType: String, preferringPosition position: AVCaptureDevicePosition) -> AVCaptureDevice? {
if let devices = AVCaptureDevice.devices(withMediaType: mediaType) as? [AVCaptureDevice] {
return devices.filter({ $0.position == position }).first
@ -740,6 +768,18 @@ open class SwiftyCamViewController: UIViewController {
return nil
}
/// Enable or disable flash for photo
fileprivate func changeFlashSettings(device: AVCaptureDevice, mode: AVCaptureFlashMode) {
do {
try device.lockForConfiguration()
device.flashMode = mode
device.unlockForConfiguration()
} catch {
print("[SwiftyCam]: \(error)")
}
}
/// Enable flash
fileprivate func enableFlash() {