I am trying to capture an Image and set it to the UIImageView, hence to create the camera I have the following code:
class HomeController: BaseController, UIImagePickerControllerDelegate {
var detector: AFDXDetector?
var captureSession : AVCaptureSession?
var stillImageOutput : AVCapturePhotoOutput?
var previewLayer : AVCaptureVideoPreviewLayer?
var camera : AVCaptureDevice!
#IBOutlet weak var cameraBtn: UIButton!
#IBOutlet weak var cameraView: UIView!
#IBOutlet weak var cameraImageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
startCamera()
}
func startCamera() {
do {
captureSession = AVCaptureSession()
camera = AVCaptureDevice.defaultDevice(withDeviceType: .builtInWideAngleCamera, mediaType: AVMediaTypeVideo, position: .front)
captureSession?.sessionPreset = AVCaptureSessionPreset1280x720
let input = try AVCaptureDeviceInput(device: camera)
if (captureSession?.canAddInput(input))!{
captureSession?.addInput(input)
stillImageOutput = AVCapturePhotoOutput()
if (captureSession?.canAddOutput(stillImageOutput))!{
print("output added")
captureSession?.canAddOutput(stillImageOutput)
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer?.videoGravity = AVLayerVideoGravityResizeAspect
previewLayer?.connection.videoOrientation = AVCaptureVideoOrientation.portrait
cameraView.layer.addSublayer(previewLayer!)
captureSession?.startRunning()
}
}
} catch {
}
}
#IBAction func cameraBtnPressed(_ sender: Any) {
if (stillImageOutput?.connection(withMediaType: AVMediaTypeVideo)) != nil
{
print("video connection detected")
}
}
}
For some reason, the print statement "video connection detected" doesn't get called although the camera is working
Does anyone else know why?
Within the if statment of captureSession?.canAddOutput(stillImageOutput) change captureSession?.canAddOutput(stillImageOutput) to .addOutput
Related
I have made a custom camera and want to overlay another image over it. I am using AVKit now to get the custom camera. I was able to overlay the image when I was using the built-in camera. This is the code for what I have for the custom camera. "newImage" is the image that i would like to overlay over the camera.
import UIKit
import AVKit
class liveView: UIViewController, AVCapturePhotoCaptureDelegate {
#IBOutlet weak var previewView: UIView!
#IBOutlet weak var captureImageView: UIImageView!
var captureSession: AVCaptureSession!
var stillImageOutput: AVCapturePhotoOutput!
var videoPreviewLayer: AVCaptureVideoPreviewLayer!
var newImage: UIImage!
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
captureSession = AVCaptureSession()
captureSession.sessionPreset = .medium
guard let backCamera = AVCaptureDevice.default(for: AVMediaType.video)
else {
print("Unable to access back camera!")
return
}
do {
let input = try AVCaptureDeviceInput(device: backCamera)
stillImageOutput = AVCapturePhotoOutput()
if captureSession.canAddInput(input) && captureSession.canAddOutput(stillImageOutput) {
captureSession.addInput(input)
captureSession.addOutput(stillImageOutput)
// videoPreviewLayer?.frame = self.newImage.accessibilityFrame
setupLivePreview()
}
}
catch let error {
print("Error Unable to initialize back camera: \(error.localizedDescription)")
}
}
func setupLivePreview() {
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
videoPreviewLayer.videoGravity = .resizeAspect
videoPreviewLayer.connection?.videoOrientation = .portrait
previewView.layer.addSublayer(videoPreviewLayer)
DispatchQueue.global(qos: .userInitiated).async {
self.captureSession.startRunning()
DispatchQueue.main.async {
self.videoPreviewLayer.frame = self.previewView.bounds
}
}
}
#IBAction func didTakePhoto(_sender : UIBarButtonItem) {
let settings = AVCapturePhotoSettings(format: [AVVideoCodecKey: AVVideoCodecType.jpeg])
stillImageOutput.capturePhoto(with: settings, delegate: self)
}
func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {
guard let imageData = photo.fileDataRepresentation()
else { return }
let image = UIImage(data: imageData)
captureImageView.image = image
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.captureSession.stopRunning()
}
}
I'm trying to add a button over a camera preview but it doesn't show up when I run the program (I have constraints). I looked into the code and tried to debug but I'm new to swift and Xcode and I'm new to debugging in general. I saw that when I commented out the camera preview layer the button showed up. Thanks!
import UIKit
import AVFoundation
import QuartzCore
class View1: UIViewController , AVCaptureVideoDataOutputSampleBufferDelegate{
let captureSession = AVCaptureSession()
var previewLayer:CALayer!
var captureDevice:AVCaptureDevice!
#IBOutlet weak var cameraView:UIView!
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
prepareCamera()
}
func prepareCamera() {
captureSession.sessionPreset = AVCaptureSessionPreset1920x1080
if let availableDevices = AVCaptureDeviceDiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: AVMediaTypeVideo, position: .back).devices {
captureDevice = availableDevices.first
beginSession()
}
}
func beginSession() {
do {
let captureDeviceInput = try AVCaptureDeviceInput(device: captureDevice)
captureSession.addInput(captureDeviceInput)
} catch {
print(error.localizedDescription)
//Figure out what to do here
}
if let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession) {
self.previewLayer = previewLayer
self.view.layer.addSublayer(self.previewLayer)
self.previewLayer.frame = self.view.layer.frame
captureSession.startRunning()
let dataOutput = AVCaptureVideoDataOutput()
dataOutput.videoSettings = [(kCVPixelBufferPixelFormatTypeKey as NSString): NSNumber(value: kCVPixelFormatType_32BGRA)]
dataOutput.alwaysDiscardsLateVideoFrames = true
if captureSession.canAddOutput(dataOutput){
captureSession.addOutput(dataOutput)
captureSession.commitConfiguration()
}
let queue = DispatchQueue(label: "com.PhotoAllergy.captureQueue")
dataOutput.setSampleBufferDelegate(self, queue: queue)
}
}
}
Maybe you could try setting the zPosition of the button to 1 or higher. YourButtonName.layer.zPostion = 2
Apple Documentation on ZPosition
You just have to add button as subview to view that is working as a preview for your avcamera.
class RecordVC {
#IBOutlet weak var vwRecordVideo : UIView!
#IBOutlet weak var btnGallary : UIButton!
override func viewDidLoad() {
super.viewDidLoad()
vwRecordVideo.addSubview(cameraButton)
vwRecordVideo.addSubview(btnGallary)
}
}
Im making a iPhone app with a AVFoundation camera but the camera is not scaling properly.
I think I have done a lot to make it the same size, I changed the video gravity to ResizeAspectFill and I changed the previewlayer.frame.size to self.layer.frame.size.
Why isn't my preview layer stretching over the entire view? Is it something I have typed wrong or just forgotten that I need to type out? Thanks!
Image: http://imgur.com/O713SoE
code:
import AVFoundation
import UIKit
import QuartzCore
class View1: UIViewController {
let captureSession = AVCaptureSession()
var previewLayer: CALayer!
var captureDevice: AVCaptureDevice!
#IBOutlet weak var photoButton: UIButton!
#IBOutlet weak var cameraView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
photoButton.layer.zPosition = 1
}
#IBAction func photoButtonpressed(_ sender: UIButton) {
let button = sender as UIButton
if (button.tag == 1){
print("Photobutton clicked")
}
}
func prepareCamera(){
captureSession.sessionPreset = AVCaptureSessionPreset1920x1080
if let availableDevices = AVCaptureDeviceDiscoverySession(deviceTypes: [.builtInWideAngleCamera],
mediaType: AVMediaTypeVideo,
position: .back).devices {
captureDevice = availableDevices.first
beginSession()
}
}
func beginSession(){
do {
let captureDeviceInput = try AVCaptureDeviceInput(device: captureDevice)
captureSession.addInput(captureDeviceInput)
} catch {
print(error.localizedDescription)
}
if let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession){
self.previewLayer = previewLayer
self.view.layer.addSublayer(self.previewLayer)
self.previewLayer.frame = self.view.layer.frame
self.previewLayer.bounds = self.view.bounds
self.previewLayer.contentsGravity = AVLayerVideoGravityResizeAspectFill
captureSession.startRunning()
let dataOutput = AVCaptureVideoDataOutput()
dataOutput.videoSettings = [(kCVPixelBufferPixelFormatTypeKey as NSString): NSNumber(value: kCVPixelFormatType_32BGRA)]
dataOutput.alwaysDiscardsLateVideoFrames = true
if captureSession.canAddOutput(dataOutput) {
captureSession.addOutput(dataOutput)
captureSession.commitConfiguration()
}
}
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
prepareCamera()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
I copy your code and run on iOS 10.1.1, iPhone6, XCode 8.2.1 it works.
How you load View1? programmatically? initiate in storyboard? the view of View1 might have different size with your device screen.
I'm trying to build a camera app, and I'm trying to set up my capture session within viewDidLoad() in my main view controller. For some reason, whenever I run the app on my phone, AVCaptureSession method canAddOutput is evaluated as false:
var captureSession: AVCaptureSession!
var photoOutput: AVCapturePhotoOutput!
var previewLayer : AVCaptureVideoPreviewLayer!
//MARK: Outlets
#IBOutlet weak var previewView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
captureSession = AVCaptureSession()
captureSession.sessionPreset = AVCaptureSessionPresetPhoto
//Ask permission to camera
let device = AVCaptureDevice.defaultDevice(withDeviceType: .builtInWideAngleCamera, mediaType: AVMediaTypeVideo, position: .back)
AVCaptureDevice.requestAccess(forMediaType: AVMediaTypeVideo, completionHandler: { (granted: Bool) in
if granted {
print("granted")
//Set up session
if let input = try? AVCaptureDeviceInput(device: device) {
print("Input = device")
if (self.captureSession.canAddInput(input)) {
self.captureSession.addInput(input)
print("Input added to capture session")
if (self.captureSession.canAddOutput(self.photoOutput)) {
print("Output added to capture session")
self.captureSession.addOutput(self.photoOutput)
self.previewLayer = AVCaptureVideoPreviewLayer(session: self.captureSession)
self.previewLayer.frame = self.previewView.bounds
self.previewView.layer.addSublayer(self.previewLayer!)
self.captureSession.startRunning()
print("Session is running")
}
}
}
}
else {
print("Goodbye")
}
})
}
Unfortunately, I can only get it to print up until "Input added to capture session". Any suggestions would help - thanks!
You have to remove previous outputs added in session. you can use for loop for that.
for outputs in captureSession.outputs{ captureSession.removeOutput(outputs) }
then try to add new out put
I would save a sublayer. But I can not get a target.
I want to save the layer that is displayed on the screen that contains the view of the camera. When I want it back, I get a white image. I concluded that I targeted my male layer when I record in dernnière function.
Here is my code:
#IBOutlet weak var blutEffect: UIVisualEffectView!
#IBOutlet weak var background: UIView! // vu d'affichage
var previewLayer = AVCaptureVideoPreviewLayer()
var captureSession = AVCaptureSession()
override func viewDidLoad() {
super.viewDidLoad()
camera()
}
#IBAction func takePhoto(sender: AnyObject) {
captureSession.stopRunning()
}
func camera () {
captureSession = AVCaptureSession()
previewLayer = AVCaptureVideoPreviewLayer()
var captureDevice : AVCaptureDevice?
let devices = AVCaptureDevice.devices()
captureSession.sessionPreset = AVCaptureSessionPresetHigh
background.layer.sublayers?.removeAll()
for device in devices {
if (device.hasMediaType(AVMediaTypeVideo)) {
if(device.position == AVCaptureDevicePosition.Back) {
captureDevice = device as? AVCaptureDevice
if captureDevice != nil {
do {
try captureSession.addInput(AVCaptureDeviceInput(device: captureDevice))
} catch _ as NSError {
print("ERROR")
}
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
self.background.layer.addSublayer(previewLayer)
previewLayer.frame = self.background.layer.frame
captureSession.startRunning()
}
}
}
}
}
func screenShotMethod() {
UIGraphicsBeginImageContext(background.layer.frame.size)
background.layer.renderInContext(UIGraphicsGetCurrentContext())
let image = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
//Save it to the camera roll
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)
}
Thanks for your help !