void setupCaptureSession ()
{
if (CaptureSession != null)
return;
CaptureSession = new AVCaptureSession ();
NSNotificationCenter.DefaultCenter.AddObserver (null, captureSessionNotification, CaptureSession);
applicationWillEnterForegroundNotificationObserver =
NSNotificationCenter.DefaultCenter.AddObserver (UIApplication.WillEnterForegroundNotification.ToString (),
UIApplication.SharedApplication,
NSOperationQueue.CurrentQueue, delegate(NSNotification notification) {
applicationWillEnterForeground ();
});
videoDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
NSError error;
videoInput = new AVCaptureDeviceInput (videoDevice, out error);
if (CaptureSession.CanAddInput (videoInput))
CaptureSession.AddInput (videoInput);
metadataOutput = new AVCaptureMetadataOutput ();
var metadataQueue = new DispatchQueue ("com.AVCam.metadata");
metadataObjectsDelegate = new MetadataObjectsDelegate {
DidOutputMetadataObjectsAction = DidOutputMetadataObjects
};
metadataOutput.SetDelegate (metadataObjectsDelegate, metadataQueue);
if (CaptureSession.CanAddOutput (metadataOutput))
CaptureSession.AddOutput (metadataOutput);
}
void ConfigureCameraForDevice (AVCaptureDevice device)
{
var error = new NSError ();
if (device.IsFocusModeSupported (AVCaptureFocusMode.ContinuousAutoFocus)) {
device.LockForConfiguration (out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration ();
} else if (device.IsExposureModeSupported (AVCaptureExposureMode.ContinuousAutoExposure)) {
device.LockForConfiguration (out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration ();
} else if (device.IsWhiteBalanceModeSupported (AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance)) {
device.LockForConfiguration (out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration ();
}
}
void CreateDevice ()
{
NSError error;
device = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
if (device == null) {
throw new Exception ("No default video device");
}
device.LockForConfiguration(out error);
if (error != null) {
throw new Exception ("Could not configure. Error: " + error);
}
device.ActiveVideoMinFrameDuration = new CMTime (1, 30);
device.UnlockForConfiguration();
}
private static AVCaptureDevice GetDefaultDevice()
{
var device = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInDualCamera, AVMediaType.Video,
AVCaptureDevicePosition.Back);
if (device != null)
{
return(device);
}
device = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video,
AVCaptureDevicePosition.Back);
if (device != null)
{
return(device);
}
device = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video,
AVCaptureDevicePosition.Front);
return(device);
}
public void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
else if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
else if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
}
/////// <summary>
/////// Select a picture from library.
/////// </summary>
/////// <param name="options">The storage options.</param>
/////// <returns>Task representing the asynchronous operation.</returns>
////public Task<MediaFile> SelectPhotoAsync(CameraMediaStorageOptions options)
////{
//// // If photos are not supported
//// if (!this.IsPhotosSupported)
//// {
//// throw new NotSupportedException();
//// }
//// // Get the image from pictures
//// return this.GetMediaAsync(UIImagePickerControllerSourceType.PhotoLibrary, MediaPickerIOS.TypeImage);
////}
/// <summary>
/// Takes the picture.
/// </summary>
/// <param name="options">The storage options.</param>
/// <returns>Task representing the asynchronous operation.</returns>
public override Task <MediaFile> TakePhotoAsync(CameraMediaStorageOptions options)
{
// If photos are not supported
if (!this.IsPhotosSupported)
{
throw new NotSupportedException();
}
// If camera is not supported
if (!this.IsCameraAvailable)
{
throw new NotSupportedException();
}
// If the camera permission is not determined
var status = AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video);
if (status == AVAuthorizationStatus.NotDetermined)
{
var granted = AVCaptureDevice.RequestAccessForMediaTypeAsync(AVMediaType.Video);
granted.Wait();
if (!granted.Result)
{
return(null);
}
}
// If camera is restricted
if ((status == AVAuthorizationStatus.Denied) || (status == AVAuthorizationStatus.Restricted))
{
return(null);
}
// Take the camera photo
MediaPickerIOS.VerifyCameraOptions(options);
return(this.GetMediaAsync(UIImagePickerControllerSourceType.Camera, MediaPickerIOS.TypeImage, options));
}
public void Video()
{
TestRuntime.AssertSystemVersion(PlatformName.iOS, 7, 0, throwIfOtherPlatform: false);
CMFormatDescriptionError fde;
var auth = AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video);
switch (auth)
{
case AVAuthorizationStatus.Restricted:
case AVAuthorizationStatus.Denied:
case AVAuthorizationStatus.NotDetermined:
// We can't test the below, since the some other tests may have initialized whatever we need for the API to work correctly.
// Assert.Null (CMFormatDescription.Create (CMMediaType.Video, (uint) CMVideoCodecType.H264, out fde), "null ({0})", auth);
// Assert.That (fde, Is.EqualTo (CMFormatDescriptionError.InvalidParameter), "CMFormatDescriptionError");
break;
case AVAuthorizationStatus.Authorized:
// We can't test the below, since the some other tests may have initialized whatever we need for the API to work correctly.
// Assert.Null (CMFormatDescription.Create (CMMediaType.Video, (uint) CMVideoCodecType.H264, out fde), "null (authorized)");
// Assert.That (fde, Is.EqualTo (CMFormatDescriptionError.InvalidParameter), "CMFormatDescriptionError (authorized)");
using (var captureSession = new AVCaptureSession()) {
using (var videoDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video)) {
NSError error;
using (var videoInput = new AVCaptureDeviceInput(videoDevice, out error)) {
// this seems to initialize something.
}
}
}
Assert.IsNotNull(CMFormatDescription.Create(CMMediaType.Video, (uint)CMVideoCodecType.H264, out fde), "not null (authorized)");
Assert.That(fde, Is.EqualTo(CMFormatDescriptionError.None), "CMFormatDescriptionError #2 (authorized)");
break;
}
}
public void ShowAVPermissionsWithType(ClusterAVAuthorizationType mediaType, string requestTitle, string message, string denyButtonTitle, string grantButtonTitle, ClusterPrePermissionCompletionHandler completionHandler)
{
if (requestTitle.Length == 0)
{
switch (mediaType)
{
case ClusterAVAuthorizationType.Camera:
requestTitle = @"Access Camera?";
break;
default:
requestTitle = @"Access Microphone?";
break;
}
}
denyButtonTitle = GetTitleForType(ClusterTitleType.Deny, denyButtonTitle);
grantButtonTitle = GetTitleForType(ClusterTitleType.Request, grantButtonTitle);
AVAuthorizationStatus status = AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video);
if (status == AVAuthorizationStatus.NotDetermined)
{
_avPermissionCompletionHandler = completionHandler;
_preAVPermissionAlertView = new UIAlertView(requestTitle, message, new AlertViewDelegate(this), denyButtonTitle, grantButtonTitle);
_preAVPermissionAlertView.Tag = (nint)(int)mediaType;
_preAVPermissionAlertView.Show();
}
else
{
if (completionHandler != null)
{
completionHandler((status == AVAuthorizationStatus.Authorized),
ClusterDialogResult.NoActionTaken,
ClusterDialogResult.NoActionTaken);
}
}
}
void Initialize()
{
CaptureSession = new AVCaptureSession();
CaptureSession.SessionPreset = AVCaptureSession.PresetPhoto;
previewLayer = new AVCaptureVideoPreviewLayer(CaptureSession)
{
Frame = Bounds,
VideoGravity = AVLayerVideoGravity.ResizeAspectFill
};
var videoDevices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
var cameraPosition = (cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
var device = videoDevices.FirstOrDefault(d => d.Position == cameraPosition);
if (device == null)
{
return;
}
NSError error;
var input = new AVCaptureDeviceInput(device, out error);
var dictionary = new NSMutableDictionary();
dictionary[AVVideo.CodecKey] = new NSNumber((int)AVVideoCodec.JPEG);
CaptureOutput = new AVCaptureStillImageOutput()
{
OutputSettings = new NSDictionary()
};
CaptureSession.AddOutput(CaptureOutput);
CaptureSession.AddInput(input);
Layer.AddSublayer(previewLayer);
CaptureSession.StartRunning();
IsPreviewing = true;
}
void Initialize()
{
CaptureSession = new AVCaptureSession();
previewLayer = new AVCaptureVideoPreviewLayer(CaptureSession)
{
Frame = Bounds,
VideoGravity = AVLayerVideoGravity.ResizeAspectFill
};
var videoDevices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
var cameraPosition = (cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
var device = videoDevices.FirstOrDefault(d => d.Position == cameraPosition);
if (device == null)
{
return;
}
NSError error;
var input = new AVCaptureDeviceInput(device, out error);
CaptureSession.AddInput(input);
Layer.AddSublayer(previewLayer);
CaptureSession.StartRunning();
IsPreviewing = true;
}
void setupCaptureSession()
{
//Create a device for capturing Barcodes
var captureDevice = AVCaptureDevice.GetDefaultDevice(AVMediaTypes.Video);
//Configure the dvice for something fancy autofocus stuffs
ConfigureCameraForDevice(captureDevice);
//Create an input from that device - meaning to instaniate the device to make an input node... err something like that
var captureInput = AVCaptureDeviceInput.FromDevice(captureDevice);
//Add the input to the session
session.AddInput(captureInput);
//Create a preview layer for the view
var previewLayer = AVCaptureVideoPreviewLayer.FromSession(session);
previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill;
previewLayer.Frame = vie_Preview_cam.Frame;
//Add the preview layer to the View for the camera uiview
vie_Preview_cam.Layer.AddSublayer(previewLayer);
//Assign who's going to handle the metadataoutput
var metadataoutput = new AVCaptureMetadataOutput();
//Set delegate
metadataoutput.SetDelegate(this, CoreFoundation.DispatchQueue.MainQueue);
//Add the metadataoutput to session
session.AddOutput(metadataoutput);
//Assign which type of Codes will be read,
metadataoutput.MetadataObjectTypes = AVMetadataObjectType.QRCode;
//Start the Session
session.StartRunning();
}
public void SetupLiveCameraStream()
{
captureSession = new AVCaptureSession();
var viewLayer = liveCameraStream.Layer;
Console.WriteLine(viewLayer.Frame.Width);
var videoPreviewLayer = new AVCaptureVideoPreviewLayer(captureSession)
{
Frame = liveCameraStream.Bounds
};
liveCameraStream.Layer.AddSublayer(videoPreviewLayer);
Console.WriteLine(liveCameraStream.Layer.Frame.Width);
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
ConfigureCameraForDevice(captureDevice);
captureDeviceInput = AVCaptureDeviceInput.FromDevice(captureDevice);
var dictionary = new NSMutableDictionary();
dictionary[AVVideo.CodecKey] = new NSNumber((int)AVVideoCodec.JPEG);
stillImageOutput = new AVCaptureStillImageOutput()
{
OutputSettings = new NSDictionary()
};
captureSession.AddOutput(stillImageOutput);
captureSession.AddInput(captureDeviceInput);
captureSession.StartRunning();
ViewWillLayoutSubviews();
}
void InitializeCameraLayer()
{
this.captureSession = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.PresetMedium // TODO investigate that
};
var captureDevice = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video).Where(dev => dev.Position == AVCaptureDevicePosition.Front).FirstOrDefault();
if (captureDevice == null)
{
Console.WriteLine("No captureDevice - this won't work on the simulator, try a physical device");
return;
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
Console.WriteLine("No input - this won't work on the simulator, try a physical device");
return;
}
this.captureSession.AddInput(input);
// set up the output
output = new AVCaptureStillImageOutput();
var dict = new NSMutableDictionary();
dict [AVVideo.CodecKey] = new NSNumber((int)AVVideoCodec.JPEG);
captureSession.AddOutput(output);
this.previewLayer = AVCaptureVideoPreviewLayer.FromSession(this.captureSession);
this.previewLayer.LayerVideoGravity = AVLayerVideoGravity.ResizeAspectFill;
this.previewLayer.Frame = this.View.Frame;
this.captureSession.StartRunning();
this.cameraInitialized = true;
}
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
// Override point for customization after application launch.
// If not required for your application you can safely delete this method
//mvvmcross
Window = new UIWindow(UIScreen.MainScreen.Bounds);
var presenter = new MvxIosViewPresenter(this, Window);
var setup = new Setup(this, presenter);
setup.Initialize();
var startup = Mvx.Resolve <IMvxAppStart>();
startup.Start();
Window.MakeKeyAndVisible();
AVAuthorizationStatus authStatus = AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video);
return(true);
}
void ConfigureCameraForDevice(AVCaptureDevice device)
{
var error = new NSError();
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.LockForConfiguration(out error);
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
device.UnlockForConfiguration();
}
if (device.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
device.LockForConfiguration(out error);
device.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
device.UnlockForConfiguration();
}
if (device.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
device.LockForConfiguration(out error);
device.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
device.UnlockForConfiguration();
}
// @todo AVCaptureDeviceFormat look into what are valid values for this.
}
public void Start()
{
captureSession = new AVCaptureSession();
previewLayer = new AVCaptureVideoPreviewLayer(captureSession)
{
VideoGravity = AVLayerVideoGravity.ResizeAspectFill,
};
try
{
var captureDevice = AVCaptureDevice.GetDefaultDevice(AVMediaTypes.Video);
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
captureSession.AddInput(input);
Layer.AddSublayer(previewLayer);
captureSession.StartRunning();
}
catch (Exception e)
{
Console.WriteLine(e);
}
}
private void CheckVideoPermissionAndStart()
{
AVFoundation.AVAuthorizationStatus authorizationStatus = AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video);
switch (authorizationStatus)
{
case AVAuthorizationStatus.NotDetermined:
AVCaptureDevice.RequestAccessForMediaType(AVMediaType.Video, delegate(bool granted)
{
if (granted)
{
SetupCaptureSession();
}
else
{
_label.Text = "Please grant Video Capture permission";
//RenderImageMessage("Please grant Video Capture permission");
}
});
break;
case AVAuthorizationStatus.Authorized:
SetupCaptureSession();
break;
case AVAuthorizationStatus.Denied:
case AVAuthorizationStatus.Restricted:
_label.Text = "Please grant Video Capture permission";
//RenderImageMessage("Please grant Video Capture permission");
break;
default:
break;
//do nothing
}
}
static void SetFlashModeForDevice (AVCaptureFlashMode flashMode, AVCaptureDevice device)
{
if (device.HasFlash && device.IsFlashModeSupported (flashMode)) {
NSError error;
if (device.LockForConfiguration (out error)) {
device.FlashMode = flashMode;
device.UnlockForConfiguration ();
} else {
Console.WriteLine ("Could not lock device for configuration: {0}", error);
}
}
}
void updateCameraSelection()
{
session.BeginConfiguration ();
AVCaptureInput[] oldInputs = session.Inputs;
foreach (var oldInput in oldInputs)
session.RemoveInput (oldInput);
AVCaptureDeviceInput input = pickCamera ();
if (input == null) {
foreach (var oldInput in oldInputs)
session.AddInput (oldInput);
} else {
session.AddInput (input);
device = input.Device;
NSError error;
if (!device.LockForConfiguration (out error))
Console.WriteLine ("Could not lock for device: " + error.LocalizedDescription);
updateAVFoundationFaceDetection ();
}
session.CommitConfiguration ();
}
public int GetNumberOfVideoCameras()
{
return(AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video).Length);
}
/// <summary>
/// Requests the permissions from the users
/// </summary>
/// <returns>The permissions and their status.</returns>
/// <param name="permissions">Permissions to request.</param>
public async Task <Dictionary <Permission, PermissionStatus> > RequestPermissionsAsync(params Permission[] permissions)
{
var results = new Dictionary <Permission, PermissionStatus>();
foreach (var permission in permissions)
{
if (results.ContainsKey(permission))
{
continue;
}
switch (permission)
{
case Permission.Calendar:
results.Add(permission, await RequestEventPermission(EKEntityType.Event).ConfigureAwait(false));
break;
case Permission.Camera:
try
{
var authCamera = await AVCaptureDevice.RequestAccessForMediaTypeAsync(AVMediaType.Video).ConfigureAwait(false);
results.Add(permission, (authCamera ? PermissionStatus.Granted : PermissionStatus.Denied));
}
catch (Exception ex)
{
Debug.WriteLine("Unable to get camera permission: " + ex);
results.Add(permission, PermissionStatus.Unknown);
}
break;
case Permission.Contacts:
results.Add(permission, await RequestContactsPermission().ConfigureAwait(false));
break;
case Permission.Location:
results.Add(permission, await RequestLocationPermission().ConfigureAwait(false));
break;
case Permission.Microphone:
try
{
var authMic = await AVCaptureDevice.RequestAccessForMediaTypeAsync(AVMediaType.Audio).ConfigureAwait(false);
results.Add(permission, (authMic ? PermissionStatus.Granted : PermissionStatus.Denied));
}
catch (Exception ex)
{
Debug.WriteLine("Unable to get microphone permission: " + ex);
results.Add(permission, PermissionStatus.Unknown);
}
break;
case Permission.Photos:
results.Add(permission, await RequestPhotosPermission().ConfigureAwait(false));
break;
case Permission.Reminders:
results.Add(permission, await RequestEventPermission(EKEntityType.Reminder).ConfigureAwait(false));
break;
case Permission.Sensors:
results.Add(permission, await RequestSensorsPermission().ConfigureAwait(false));
break;
}
if (!results.ContainsKey(permission))
{
results.Add(permission, PermissionStatus.Granted);
}
}
return(results);
}
public FlashTorch()
{
// Check if there are any devices with torch support.
this.torchDevice = AVCaptureDevice.DevicesWithMediaType (AVMediaType.Video)?.FirstOrDefault (d => d.HasTorch);
}
private void Initialize()
{
Opaque = false;
BackgroundColor = UIColor.Clear;
//Add(_mainView);
var picFrameWidth = Math.Round(Frame.Width * 0.90); //screenFrame.Width;
var picFrameHeight = Math.Round(Frame.Height * 0.60);
var picFrameX = (Frame.Width - picFrameWidth) / 2;
var picFrameY = (Frame.Height - picFrameHeight) / 2;
var picFrame = new RectangleF((int)picFrameX, (int)picFrameY, (int)picFrameWidth, (int)picFrameHeight);
//Setup Overlay
var overlaySize = new SizeF(this.Frame.Width, this.Frame.Height - 44);
topBg = new UIView(new RectangleF(0, 0, this.Frame.Width, (overlaySize.Height - picFrame.Height) / 2));
topBg.Frame = new RectangleF(0, 0, this.Frame.Width, this.Frame.Height * 0.30f);
topBg.BackgroundColor = UIColor.Black;
topBg.Alpha = 0.6f;
topBg.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleBottomMargin;
bottomBg = new UIView(new RectangleF(0, topBg.Frame.Height + picFrame.Height, this.Frame.Width, topBg.Frame.Height));
bottomBg.Frame = new RectangleF(0, this.Frame.Height * 0.70f, this.Frame.Width, this.Frame.Height * 0.30f);
bottomBg.BackgroundColor = UIColor.Black;
bottomBg.Alpha = 0.6f;
bottomBg.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleTopMargin;
var redLine = new UIView(new RectangleF(0, this.Frame.Height * 0.5f - 2.0f, this.Frame.Width, 4.0f));
redLine.BackgroundColor = UIColor.Red;
redLine.Alpha = 0.4f;
redLine.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleBottomMargin | UIViewAutoresizing.FlexibleTopMargin;
this.AddSubview(redLine);
this.AddSubview(topBg);
this.AddSubview(bottomBg);
textTop = new UILabel()
{
Frame = new RectangleF(0, this.Frame.Height * 0.10f, this.Frame.Width, 42),
Text = Scanner.TopText,
Font = UIFont.SystemFontOfSize(13),
TextAlignment = UITextAlignment.Center,
TextColor = UIColor.White,
Lines = 2,
BackgroundColor = UIColor.Clear
};
this.AddSubview(textTop);
textBottom = new UILabel()
{
Frame = new RectangleF(0, this.Frame.Height * 0.825f - 32f, this.Frame.Width, 64),
Text = Scanner.BottomText,
Font = UIFont.SystemFontOfSize(13),
TextAlignment = UITextAlignment.Center,
TextColor = UIColor.White,
Lines = 3,
BackgroundColor = UIColor.Clear
};
this.AddSubview(textBottom);
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
bool hasTorch = false;
if (captureDevice != null)
{
hasTorch = captureDevice.TorchAvailable;
}
InvokeOnMainThread(delegate {
// Setting tool bar
var toolBar = new UIToolbar(new RectangleF(0, Frame.Height - 44, Frame.Width, 44));
var buttons = new List <UIBarButtonItem>();
buttons.Add(new UIBarButtonItem(Scanner.CancelButtonText, UIBarButtonItemStyle.Done,
delegate { OnCancel(); }));
if (hasTorch)
{
buttons.Add(new UIBarButtonItem(UIBarButtonSystemItem.FlexibleSpace));
buttons.Add(new UIBarButtonItem(Scanner.FlashButtonText, UIBarButtonItemStyle.Done,
delegate { OnTorch(); }));
}
toolBar.Items = buttons.ToArray();
toolBar.TintColor = UIColor.Black;
toolBar.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleTopMargin;
Add(toolBar);
});
}
protected string CameraAccessStatus()
{
return(AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video).ToString());
}
// Call this on the session queue.
void ConfigureSession()
{
if (setupResult != AVCamSetupResult.Success)
{
return;
}
NSError error = null;
session.BeginConfiguration();
/*
* We do not create an AVCaptureMovieFileOutput when setting up the session because the
* AVCaptureMovieFileOutput does not support movie recording with AVCaptureSessionPresetPhoto.
*/
session.SessionPreset = AVCaptureSession.PresetPhoto;
// Add video input.
// Choose the back dual camera if available, otherwise default to a wide angle camera.
var videoDevice = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInDualCamera, AVMediaType.Video, AVCaptureDevicePosition.Back);
if (videoDevice == null)
{
// If the back dual camera is not available, default to the back wide angle camera.
videoDevice = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video, AVCaptureDevicePosition.Back);
// In some cases where users break their phones, the back wide angle camera is not available. In this case, we should default to the front wide angle camera.
if (videoDevice == null)
{
videoDevice = AVCaptureDevice.GetDefaultDevice(AVCaptureDeviceType.BuiltInWideAngleCamera, AVMediaType.Video, AVCaptureDevicePosition.Front);
}
}
var lVideoDeviceInput = AVCaptureDeviceInput.FromDevice(videoDevice, out error);
if (lVideoDeviceInput == null)
{
Console.WriteLine($"Could not create video device input: {error}");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration();
return;
}
if (session.CanAddInput(lVideoDeviceInput))
{
session.AddInput(lVideoDeviceInput);
videoDeviceInput = lVideoDeviceInput;
DispatchQueue.MainQueue.DispatchAsync(() =>
{
/*
* Why are we dispatching this to the main queue?
* Because AVCaptureVideoPreviewLayer is the backing layer for AVCamPreviewView and UIView
* can only be manipulated on the main thread.
* Note: As an exception to the above rule, it is not necessary to serialize video orientation changes
* on the AVCaptureVideoPreviewLayer’s connection with other session manipulation.
*
* Use the status bar orientation as the initial video orientation. Subsequent orientation changes are
* handled by -[AVCamCameraViewController viewWillTransitionToSize:withTransitionCoordinator:].
*/
var statusBarOrientation = UIApplication.SharedApplication.StatusBarOrientation;
var initialVideoOrientation = AVCaptureVideoOrientation.Portrait;
if (statusBarOrientation != UIInterfaceOrientation.Unknown)
{
initialVideoOrientation = (AVCaptureVideoOrientation)statusBarOrientation;
}
VideoPreviewLayer.Connection.VideoOrientation = initialVideoOrientation;
});
}
else
{
Console.WriteLine(@"Could not add video device input to the session");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration();
return;
}
// Add audio input.
var audioDevice = AVCaptureDevice.GetDefaultDevice(AVMediaType.Audio);
var audioDeviceInput = AVCaptureDeviceInput.FromDevice(audioDevice, out error);
if (audioDeviceInput == null)
{
Console.WriteLine($"Could not create audio device input: {error}");
}
if (session.CanAddInput(audioDeviceInput))
{
session.AddInput(audioDeviceInput);
}
else
{
Console.WriteLine(@"Could not add audio device input to the session");
}
// Add photo output.
var lPhotoOutput = new AVCapturePhotoOutput();
if (session.CanAddOutput(lPhotoOutput))
{
session.AddOutput(lPhotoOutput);
photoOutput = lPhotoOutput;
photoOutput.IsHighResolutionCaptureEnabled = true;
photoOutput.IsLivePhotoCaptureEnabled = photoOutput.IsLivePhotoCaptureSupported;
//photoOutput.IsDepthDataDeliveryEnabled(photoOutput.IsDepthDataDeliverySupported());
livePhotoMode = photoOutput.IsLivePhotoCaptureSupported ? AVCamLivePhotoMode.On : AVCamLivePhotoMode.Off;
//depthDataDeliveryMode = photoOutput.IsDepthDataDeliverySupported() ? AVCamDepthDataDeliveryMode.On : AVCamDepthDataDeliveryMode.Off;
inProgressPhotoCaptureDelegates = new Dictionary <long, AVCamPhotoCaptureDelegate>();
inProgressLivePhotoCapturesCount = 0;
}
else
{
Console.WriteLine(@"Could not add photo output to the session");
setupResult = AVCamSetupResult.SessionConfigurationFailed;
session.CommitConfiguration();
return;
}
backgroundRecordingId = UIApplication.BackgroundTaskInvalid;
session.CommitConfiguration();
}
bool SetupCaptureSession ()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession () {
SessionPreset = AVCaptureSession.PresetMedium
};
// create a device input and attach it to the session
captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
var input = AVCaptureDeviceInput.FromDevice (captureDevice);
if (input == null){
// No input device
return false;
}
session.AddInput (input);
// create a VideoDataOutput and add it to the sesion
var output = new AVCaptureVideoDataOutput () {
VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA)
};
// configure the output
queue = new DispatchQueue ("myQueue");
scanner = new ZxingScanner (this);
output.SetSampleBufferDelegateAndQueue (scanner, queue);
session.AddOutput (output);
previewLayer = new AVCaptureVideoPreviewLayer (session);
previewLayer.Orientation = AVCaptureVideoOrientation.Portrait;
previewLayer.VideoGravity = "AVLayerVideoGravityResizeAspectFill";
session.StartRunning ();
return true;
}
public override void ViewDidLoad()
{
base.ViewDidLoad ();
weAreRecording = false;
lblError.Hidden = true;
btnStartRecording.SetTitle("Start Recording", UIControlState.Normal);
//Set up session
session = new AVCaptureSession ();
//Set up inputs and add them to the session
//this will only work if using a physical device!
Console.WriteLine ("getting device inputs");
try{
//add video capture device
device = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
input = AVCaptureDeviceInput.FromDevice (device);
session.AddInput (input);
//add audio capture device
audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Audio);
audioInput = AVCaptureDeviceInput.FromDevice(audioDevice);
session.AddInput(audioInput);
}
catch(Exception ex){
//show the label error. This will always show when running in simulator instead of physical device.
lblError.Hidden = false;
return;
}
//Set up preview layer (shows what the input device sees)
Console.WriteLine ("setting up preview layer");
previewlayer = new AVCaptureVideoPreviewLayer (session);
previewlayer.Frame = this.View.Bounds;
//this code makes UI controls sit on top of the preview layer! Allows you to just place the controls in interface builder
UIView cameraView = new UIView ();
cameraView = new UIView ();
cameraView.Layer.AddSublayer (previewlayer);
this.View.AddSubview (cameraView);
this.View.SendSubviewToBack (cameraView);
Console.WriteLine ("Configuring output");
output = new AVCaptureMovieFileOutput ();
long totalSeconds = 10000;
Int32 preferredTimeScale = 30;
CMTime maxDuration = new CMTime (totalSeconds, preferredTimeScale);
output.MinFreeDiskSpaceLimit = 1024 * 1024;
output.MaxRecordedDuration = maxDuration;
if (session.CanAddOutput (output)) {
session.AddOutput (output);
}
session.SessionPreset = AVCaptureSession.PresetMedium;
Console.WriteLine ("About to start running session");
session.StartRunning ();
//toggle recording button was pushed.
btnStartRecording.TouchUpInside += startStopPushed;
//Console.ReadLine ();
}
public AVCaptureDeviceInput (AVCaptureDevice device, IntPtr handle) : this (device, out globalerr)
{
}
static public AVCaptureDeviceInput FromDevice (AVCaptureDevice device)
{
NSError error;
return FromDevice (device, out error);
}
private void flipCamera()
{
if (TakePictureButton.Tag == 0)
{
CaptureSession.StopRunning();
CaptureSession.BeginConfiguration();
if (fontBack == 1)
{
fontBack = 0;
CaptureSession.RemoveInput(frontCamera);
CaptureSession.AddInput(rearCamera);
currentDevice = inputDevice2;
}
else {
fontBack = 1;
CaptureSession.RemoveInput(rearCamera);
CaptureSession.AddInput(frontCamera);
currentDevice = inputDevice1;
}
CaptureSession.CommitConfiguration();
CaptureSession.StartRunning();
}
}
void teardownAVCapture()
{
session.StopRunning ();
teardownAVFoundationFaceDetection ();
device.UnlockForConfiguration ();
device.RemoveObserver (this, (NSString) "videoZoomFactor");
device.RemoveObserver (this, (NSString) "rampingVideoZoom");
device = null;
session = null;
}
bool SetupCaptureSession()
{
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.Preset640x480
};
// create a device input and attach it to the session
var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (captureDevice == null)
{
Console.WriteLine("No captureDevice - this won't work on the simulator, try a physical device");
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
}
return(false);
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
Console.WriteLine("No input - this won't work on the simulator, try a physical device");
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
}
return(false);
}
else
{
session.AddInput(input);
}
previewLayer = new AVCaptureVideoPreviewLayer(session);
//Framerate set here (15 fps)
if (previewLayer.RespondsToSelector(new Selector("connection")))
{
previewLayer.Connection.VideoMinFrameDuration = new CMTime(1, 10);
}
previewLayer.LayerVideoGravity = AVLayerVideoGravity.ResizeAspectFill;
previewLayer.Frame = this.Frame;
previewLayer.Position = new PointF(this.Layer.Bounds.Width / 2, (this.Layer.Bounds.Height / 2));
layerView = new UIView(this.Frame);
layerView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
layerView.Layer.AddSublayer(previewLayer);
this.AddSubview(layerView);
ResizePreview(UIApplication.SharedApplication.StatusBarOrientation);
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
//overlayView.LayoutSubviews ();
}
session.StartRunning();
Console.WriteLine("RUNNING!!!");
// create a VideoDataOutput and add it to the sesion
output = new AVCaptureVideoDataOutput()
{
//videoSettings
VideoSettings = new AVVideoSettings(CVPixelFormatType.CV32BGRA),
};
// configure the output
queue = new MonoTouch.CoreFoundation.DispatchQueue("ZxingScannerView"); // (Guid.NewGuid().ToString());
var barcodeReader = new BarcodeReader(null, (img) =>
{
var src = new RGBLuminanceSource(img); //, bmp.Width, bmp.Height);
//Don't try and rotate properly if we're autorotating anyway
if (ScanningOptions.AutoRotate.HasValue && ScanningOptions.AutoRotate.Value)
{
return(src);
}
var tmpInterfaceOrientation = UIInterfaceOrientation.Portrait;
InvokeOnMainThread(() => tmpInterfaceOrientation = UIApplication.SharedApplication.StatusBarOrientation);
switch (tmpInterfaceOrientation)
{
case UIInterfaceOrientation.Portrait:
return(src.rotateCounterClockwise().rotateCounterClockwise().rotateCounterClockwise());
case UIInterfaceOrientation.PortraitUpsideDown:
return(src.rotateCounterClockwise().rotateCounterClockwise().rotateCounterClockwise());
case UIInterfaceOrientation.LandscapeLeft:
return(src);
case UIInterfaceOrientation.LandscapeRight:
return(src);
}
return(src);
}, null, null); //(p, w, h, f) => new RGBLuminanceSource(p, w, h, RGBLuminanceSource.BitmapFormat.Unknown));
if (ScanningOptions.TryHarder.HasValue)
{
Console.WriteLine("TRY_HARDER: " + ScanningOptions.TryHarder.Value);
barcodeReader.Options.TryHarder = ScanningOptions.TryHarder.Value;
}
if (ScanningOptions.PureBarcode.HasValue)
{
barcodeReader.Options.PureBarcode = ScanningOptions.PureBarcode.Value;
}
if (ScanningOptions.AutoRotate.HasValue)
{
Console.WriteLine("AUTO_ROTATE: " + ScanningOptions.AutoRotate.Value);
barcodeReader.AutoRotate = ScanningOptions.AutoRotate.Value;
}
if (!string.IsNullOrEmpty(ScanningOptions.CharacterSet))
{
barcodeReader.Options.CharacterSet = ScanningOptions.CharacterSet;
}
if (ScanningOptions.TryInverted.HasValue)
{
barcodeReader.TryInverted = ScanningOptions.TryInverted.Value;
}
if (ScanningOptions.PossibleFormats != null && ScanningOptions.PossibleFormats.Count > 0)
{
barcodeReader.Options.PossibleFormats = new List <BarcodeFormat>();
foreach (var pf in ScanningOptions.PossibleFormats)
{
barcodeReader.Options.PossibleFormats.Add(pf);
}
}
outputRecorder = new OutputRecorder(ScanningOptions, img =>
{
if (!IsAnalyzing)
{
return;
}
try
{
var started = DateTime.Now;
var rs = barcodeReader.Decode(img);
var total = DateTime.Now - started;
Console.WriteLine("Decode Time: " + total.TotalMilliseconds + " ms");
if (rs != null)
{
resultCallback(rs);
}
}
catch (Exception ex)
{
Console.WriteLine("DECODE FAILED: " + ex);
}
});
output.AlwaysDiscardsLateVideoFrames = true;
output.SetSampleBufferDelegate(outputRecorder, queue);
Console.WriteLine("SetupCamera Finished");
session.AddOutput(output);
//session.StartRunning ();
if (captureDevice.IsFocusModeSupported(AVCaptureFocusMode.ModeContinuousAutoFocus))
{
NSError err = null;
if (captureDevice.LockForConfiguration(out err))
{
captureDevice.FocusMode = AVCaptureFocusMode.ModeContinuousAutoFocus;
if (captureDevice.FocusPointOfInterestSupported)
{
captureDevice.FocusPointOfInterest = new PointF(0.5f, 0.5f);
}
captureDevice.UnlockForConfiguration();
}
else
{
Console.WriteLine("Failed to Lock for Config: " + err.Description);
}
}
return(true);
}
bool SetupCaptureSession()
{
//Console.WriteLine ("SetupCaptureSession");
// Overview: RosyWriter uses separate GCD queues for audio and video capture. If a single GCD queue
// is used to deliver both audio and video buffers, and our video processing consistently takes
// too long, the delivery queue can back up, resulting in audio being dropped.
//
// When recording, RosyWriter creates a third GCD queue for calls to AVAssetWriter. This ensures
// that AVAssetWriter is not called to start or finish writing from multiple threads simultaneously.
//
// RosyWriter uses AVCaptureSession's default preset, AVCaptureSessionPresetHigh.
// Create Capture session
captureSession = new AVCaptureSession();
captureSession.BeginConfiguration();
// Create audio connection
NSError error;
var audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Audio);
if (audioDevice == null)
{
return(false); // e.g. simulator
}
var audioIn = new AVCaptureDeviceInput(audioDevice, out error);
if (captureSession.CanAddInput(audioIn))
{
captureSession.AddInput(audioIn);
}
var audioOut = new AVCaptureAudioDataOutput();
var audioCaptureQueue = new DispatchQueue("Audio Capture Queue");
// Add the Delegate to capture each sample that comes through
audioOut.SetSampleBufferDelegateQueue(this, audioCaptureQueue);
if (captureSession.CanAddOutput(audioOut))
{
captureSession.AddOutput(audioOut);
}
audioConnection = audioOut.ConnectionFromMediaType(AVMediaType.Audio);
// Create Video Session
var videoDevice = VideoDeviceWithPosition(AVCaptureDevicePosition.Back);
var videoIn = new AVCaptureDeviceInput(videoDevice, out error);
if (captureSession.CanAddInput(videoIn))
{
captureSession.AddInput(videoIn);
}
// RosyWriter prefers to discard late video frames early in the capture pipeline, since its
// processing can take longer than real-time on some platforms (such as iPhone 3GS).
// Clients whose image processing is faster than real-time should consider setting AVCaptureVideoDataOutput's
// alwaysDiscardsLateVideoFrames property to NO.
var videoOut = new AVCaptureVideoDataOutput {
AlwaysDiscardsLateVideoFrames = true,
// HACK: Change VideoSettings to WeakVideoSettings, and AVVideoSettings to CVPixelBufferAttributes
// VideoSettings = new AVVideoSettings (CVPixelFormatType.CV32BGRA)
WeakVideoSettings = new CVPixelBufferAttributes()
{
PixelFormatType = CVPixelFormatType.CV32BGRA
}.Dictionary
};
// Create a DispatchQueue for the Video Processing
var videoCaptureQueue = new DispatchQueue("Video Capture Queue");
videoOut.SetSampleBufferDelegateQueue(this, videoCaptureQueue);
if (captureSession.CanAddOutput(videoOut))
{
captureSession.AddOutput(videoOut);
}
// Set the Video connection from the Video Output object
videoConnection = videoOut.ConnectionFromMediaType(AVMediaType.Video);
videoOrientation = videoConnection.VideoOrientation;
captureSession.CommitConfiguration();
return(true);
}
void ChangeCamera(NSObject sender)
{
//CameraButton.Enabled = false;
//RecordButton.Enabled = false;
//PhotoButton.Enabled = false;
//LivePhotoModeButton.Enabled = false;
//CaptureModeControl.Enabled = false;
sessionQueue.DispatchAsync(() =>
{
var currentVideoDevice = videoDeviceInput.Device;
var currentPosition = currentVideoDevice.Position;
AVCaptureDevicePosition preferredPosition = AVCaptureDevicePosition.Unspecified;
AVCaptureDeviceType preferredDeviceType = AVCaptureDeviceType.BuiltInDualCamera;
switch (currentPosition)
{
//case AVCaptureDevicePosition.Unspecified:
//preferredPosition = AVCaptureDevicePosition.Back;
//preferredDeviceType = AVCaptureDeviceType.BuiltInDualCamera;
//break;
case AVCaptureDevicePosition.Unspecified:
case AVCaptureDevicePosition.Front:
preferredPosition = AVCaptureDevicePosition.Back;
preferredDeviceType = AVCaptureDeviceType.BuiltInDualCamera;
break;
case AVCaptureDevicePosition.Back:
preferredPosition = AVCaptureDevicePosition.Front;
preferredDeviceType = AVCaptureDeviceType.BuiltInWideAngleCamera;
break;
}
var devices = videoDeviceDiscoverySession.Devices;
AVCaptureDevice newVideoDevice = null;
// First, look for a device with both the preferred position and device type.
foreach (var device in devices)
{
if (device.Position == preferredPosition && device.DeviceType.GetConstant() == preferredDeviceType.GetConstant())
{
newVideoDevice = device;
break;
}
}
// Otherwise, look for a device with only the preferred position.
if (newVideoDevice == null)
{
foreach (var device in devices)
{
if (device.Position == preferredPosition)
{
newVideoDevice = device;
break;
}
}
}
if (newVideoDevice != null)
{
var lVideoDeviceInput = AVCaptureDeviceInput.FromDevice(newVideoDevice);
session.BeginConfiguration();
// Remove the existing device input first, since using the front and back camera simultaneously is not supported.
session.RemoveInput(videoDeviceInput);
if (session.CanAddInput(lVideoDeviceInput))
{
if (subjectAreaDidChangeObserver != null)
{
subjectAreaDidChangeObserver.Dispose();
}
subjectAreaDidChangeObserver = NSNotificationCenter.DefaultCenter.AddObserver(AVCaptureDevice.SubjectAreaDidChangeNotification, SubjectAreaDidChange, newVideoDevice);
session.AddInput(lVideoDeviceInput);
videoDeviceInput = lVideoDeviceInput;
}
else
{
session.AddInput(videoDeviceInput);
}
if (movieFileOutput != null)
{
var movieFileOutputConnection = movieFileOutput.ConnectionFromMediaType(AVMediaType.Video);
if (movieFileOutputConnection.SupportsVideoStabilization)
{
movieFileOutputConnection.PreferredVideoStabilizationMode = AVCaptureVideoStabilizationMode.Auto;
}
}
/*
* Set Live Photo capture and depth data delivery if it is supported. When changing cameras, the
* `livePhotoCaptureEnabled` and `depthDataDeliveryEnabled` properties of the AVCapturePhotoOutput gets set to NO when
* a video device is disconnected from the session. After the new video device is
* added to the session, re-enable Live Photo capture and depth data delivery if they are supported.
*/
photoOutput.IsLivePhotoCaptureEnabled = photoOutput.IsLivePhotoCaptureSupported;
//photoOutput.IsDepthDataDeliveryEnabled(photoOutput.IsDepthDataDeliverySupported());
session.CommitConfiguration();
}
//DispatchQueue.MainQueue.DispatchAsync(() =>
//{
// CameraButton.Enabled = true;
// RecordButton.Enabled = CaptureModeControl.SelectedSegment == (int)AVCamCaptureMode.Movie;
// PhotoButton.Enabled = true;
// LivePhotoModeButton.Enabled = true;
// CaptureModeControl.Enabled = true;
// DepthDataDeliveryButton.Enabled = photoOutput.IsDepthDataDeliveryEnabled();
// DepthDataDeliveryButton.Hidden = !photoOutput.IsDepthDataDeliverySupported();
//});
});
}
/// <summary>
/// Requests user access to the device.
/// </summary>
/// <returns>True if access was granted, otherwise false.</returns>
public Task <bool> RequestAccessAsync()
{
return(AVCaptureDevice.RequestAccessForMediaTypeAsync(AVMediaType.Video));
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
this.View.BackgroundColor = UIColor.White;
NSError error;
// Setup detector options.
var options = new CIDetectorOptions {
Accuracy = FaceDetectorAccuracy.High,
// Can give a hint here about the rects to detect. 1.4 would be for A4 sheets of paper for instance.
AspectRatio = 1.41f,
};
// Create a rectangle detector. Note that you can also create QR detector or a face detector.
// Most of this code will also work with other detectors (like streaming to a preview layer and grabbing images).
this.detector = CIDetector.CreateRectangleDetector(context: null, detectorOptions: options);
// Create the session. The AVCaptureSession is the managing instance of the whole video handling.
var captureSession = new AVCaptureSession()
{
// Defines what quality we want to use for the images we grab. Photo gives highest resolutions.
SessionPreset = AVCaptureSession.PresetPhoto
};
// Find a suitable AVCaptureDevice for video input.
var device = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (device == null)
{
// This will not work on the iOS Simulator - there is no camera. :-)
throw new InvalidProgramException("Failed to get AVCaptureDevice for video input!");
}
// Create a device input with the device and add it to the session.
var videoInput = AVCaptureDeviceInput.FromDevice(device, out error);
if (videoInput == null)
{
throw new InvalidProgramException("Failed to get AVCaptureDeviceInput from AVCaptureDevice!");
}
// Let session read from the input, this is our source.
captureSession.AddInput(videoInput);
// Create output for the video stream. This is the destination.
var videoOutput = new AVCaptureVideoDataOutput()
{
AlwaysDiscardsLateVideoFrames = true
};
// Define the video format we want to use. Note that Xamarin exposes the CompressedVideoSetting and UncompressedVideoSetting
// properties on AVCaptureVideoDataOutput un Unified API, but I could not get these to work. The VideoSettings property is deprecated,
// so I use the WeakVideoSettings instead which takes an NSDictionary as input.
this.videoSettingsDict = new NSMutableDictionary();
this.videoSettingsDict.Add(CVPixelBuffer.PixelFormatTypeKey, NSNumber.FromUInt32((uint)CVPixelFormatType.CV32BGRA));
videoOutput.WeakVideoSettings = this.videoSettingsDict;
// Create a delegate to report back to us when an image has been captured.
// We want to grab the camera stream and feed it through a AVCaptureVideoDataOutputSampleBufferDelegate
// which allows us to get notified if a new image is availeble. An implementation of that delegate is VideoFrameSampleDelegate in this project.
this.sampleBufferDelegate = new VideoFrameSamplerDelegate();
// Processing happens via Grand Central Dispatch (GCD), so we need to provide a queue.
// This is pretty much like a system managed thread (see: http://zeroheroblog.com/ios/concurrency-in-ios-grand-central-dispatch-gcd-dispatch-queues).
this.sessionQueue = new DispatchQueue("AVSessionQueue");
// Assign the queue and the delegate to the output. Now all output will go through the delegate.
videoOutput.SetSampleBufferDelegate(this.sampleBufferDelegate, this.sessionQueue);
// Add output to session.
captureSession.AddOutput(videoOutput);
// We also want to visualize the input stream. The raw stream can be fed into an AVCaptureVideoPreviewLayer, which is a subclass of CALayer.
// A CALayer can be added to a UIView. We add that layer to the controller's main view.
var layer = this.View.Layer;
this.videoLayer = AVCaptureVideoPreviewLayer.FromSession(captureSession);
this.videoLayer.Frame = layer.Bounds;
layer.AddSublayer(this.videoLayer);
// All setup! Start capturing!
captureSession.StartRunning();
// This is just for information and allows you to get valid values for the detection framerate.
Console.WriteLine("Available capture framerates:");
var rateRanges = device.ActiveFormat.VideoSupportedFrameRateRanges;
foreach (var r in rateRanges)
{
Console.WriteLine(r.MinFrameRate + "; " + r.MaxFrameRate + "; " + r.MinFrameDuration + "; " + r.MaxFrameDuration);
}
// Configure framerate. Kind of weird way of doing it but the only one that works.
device.LockForConfiguration(out error);
// CMTime constructor means: 1 = one second, DETECTION_FPS = how many samples per unit, which is 1 second in this case.
device.ActiveVideoMinFrameDuration = new CMTime(1, DETECTION_FPS);
device.ActiveVideoMaxFrameDuration = new CMTime(1, DETECTION_FPS);
device.UnlockForConfiguration();
// Put a small image view at the top left that shows the live image with the detected rectangle(s).
this.imageViewOverlay = new UIImageView
{
ContentMode = UIViewContentMode.ScaleAspectFit,
BackgroundColor = UIColor.Gray
};
this.imageViewOverlay.Layer.BorderColor = UIColor.Red.CGColor;
this.imageViewOverlay.Layer.BorderWidth = 3f;
this.Add(this.imageViewOverlay);
// Put another image view top right that shows the image with perspective correction.
this.imageViewPerspective = new UIImageView
{
ContentMode = UIViewContentMode.ScaleAspectFit,
BackgroundColor = UIColor.Gray
};
this.imageViewPerspective.Layer.BorderColor = UIColor.Red.CGColor;
this.imageViewPerspective.Layer.BorderWidth = 3f;
this.Add(this.imageViewPerspective);
// Add some lables for information.
this.mainWindowLbl = new UILabel
{
Text = "Live stream from camera. Point camera to a rectangular object.",
TextAlignment = UITextAlignment.Center
};
this.Add(this.mainWindowLbl);
this.detectionWindowLbl = new UILabel
{
Text = "Detected rectangle overlay",
TextAlignment = UITextAlignment.Center
};
this.Add(this.detectionWindowLbl);
this.perspectiveWindowLbl = new UILabel
{
Text = "Perspective corrected",
TextAlignment = UITextAlignment.Center
};
this.Add(this.perspectiveWindowLbl);
}
private AVAuthorizationStatus GetAuthorizationStatus()
{
return(AVCaptureDevice.GetAuthorizationStatus(AVMediaType.Video));
}
protected void Initialize()
{
// configure the capture session for medium resolution, change this if your code
// can cope with more data or volume
CaptureSession = new AVCaptureSession
{
SessionPreset = AVCaptureSession.PresetMedium
};
previewLayer = new AVCaptureVideoPreviewLayer(CaptureSession)
{
Frame = Bounds,
VideoGravity = AVLayerVideoGravity.ResizeAspectFill
};
var videoDevices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
var cameraPosition = (cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
var device = videoDevices.FirstOrDefault(d => d.Position == cameraPosition);
if (device == null)
{
return;
}
// SET to slow motion
NSError error;
var input = new AVCaptureDeviceInput(device, out error);
movieFileOutput = new AVCaptureMovieFileOutput
{
//set max record time to 10 minutes
MaxRecordedDuration = CMTime.FromSeconds(600, 1)
};
photoFileOutput = new AVCapturePhotoOutput();
photoFileOutput.IsHighResolutionCaptureEnabled = true;
if (CaptureSession.CanAddOutput(movieFileOutput))
{
CaptureSession.BeginConfiguration();
CaptureSession.AddOutput(movieFileOutput);
CaptureSession.AddOutput(photoFileOutput);
var ranges = device.ActiveFormat.VideoSupportedFrameRateRanges;
if (device.LockForConfiguration(out error))
{
device.ActiveVideoMinFrameDuration = new CMTime(1, (int)ranges.First().MinFrameRate);
device.ActiveVideoMaxFrameDuration = new CMTime(1, (int)ranges.First().MaxFrameRate);
}
var connection = movieFileOutput.ConnectionFromMediaType(AVMediaType.Video);
if (connection != null)
{
if (connection.SupportsVideoStabilization)
{
connection.PreferredVideoStabilizationMode = AVCaptureVideoStabilizationMode.Auto;
}
}
CaptureSession.CommitConfiguration();
}
CaptureSession.AddInput(input);
Layer.AddSublayer(previewLayer);
CaptureSession.StartRunning();
// set frame rate if Slow-mo is requested
if (speedOptions == SpeedOptions.SlowMo)
{
foreach (var vFormat in device.Formats)
{
var _ranges = vFormat.VideoSupportedFrameRateRanges as AVFrameRateRange[];
var frameRates = _ranges[0];
if (frameRates.MaxFrameRate >= 240.0)
{
device.LockForConfiguration(out NSError _error);
if (_error is null)
{
device.ActiveFormat = vFormat as AVCaptureDeviceFormat;
device.ActiveVideoMinFrameDuration = frameRates.MinFrameDuration;
device.ActiveVideoMaxFrameDuration = frameRates.MaxFrameDuration;
device.UnlockForConfiguration();
break;
}
}
}
}
IsPreviewing = true;
}
public static AVCaptureDeviceInput FromDevice(AVCaptureDevice device, IntPtr handle)
{
NSError error;
return FromDevice (device, out error);
}
/// <summary>
/// Initializes a new instance of the CameraDevice class.
/// </summary>
internal CameraDevice()
{
this.device = AVCaptureDevice.Devices.SingleOrDefault(device => device.Position == AVCaptureDevicePosition.Back);
}
private bool addCameraInput( out string errorMessage )
{
errorMessage = "";
videoCaptureDevice = this.cameraType == CameraType.FrontFacing ? MediaDevices.FrontCamera : MediaDevices.BackCamera;
videoInput = AVCaptureDeviceInput.FromDevice(videoCaptureDevice);
if (videoInput == null)
{
errorMessage = "No video capture device";
return false;
}
session.AddInput (videoInput);
return true;
}
private bool addAudioInput( out string errorMessage )
{
errorMessage = "";
audioCaptureDevice = MediaDevices.Microphone;
audioInput = AVCaptureDeviceInput.FromDevice(audioCaptureDevice);
if (audioInput == null)
{
errorMessage = "No audio capture device";
return false;
}
session.AddInput (audioInput);
return true;
}
private void SetupCamera()
{
CaptureSession = null;
CaptureSession = new AVCaptureSession();
CaptureSession.SessionPreset = AVCaptureSession.PresetPhoto;
currentDevice = null;
inputDevice1 = null;
inputDevice2 = null;
foreach (AVCaptureDevice device in AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video))
{
if (device.Position == AVCaptureDevicePosition.Front)
{
inputDevice1 = device;
}
else if (device.Position == AVCaptureDevicePosition.Back)
{
inputDevice2 = device;
}
}
NSError error;
if (inputDevice1.HasFlash)
{
inputDevice1.LockForConfiguration(out error);
inputDevice1.FlashMode = AVCaptureFlashMode.Off;
FlashButton.TitleLabel.Text = "Flash Off";
}
if (inputDevice2.HasFlash)
{
inputDevice2.LockForConfiguration(out error);
inputDevice2.FlashMode = AVCaptureFlashMode.Off;
FlashButton.TitleLabel.Text = "Flash Off";
}
frontCamera = AVCaptureDeviceInput.FromDevice(inputDevice1, out error);
rearCamera = AVCaptureDeviceInput.FromDevice(inputDevice2, out error);
currentDevice = inputDevice2;
if (CaptureSession.CanAddInput(rearCamera))
{
CaptureSession.AddInput(rearCamera);
}
AVCaptureVideoPreviewLayer previewLayer = new AVCaptureVideoPreviewLayer(CaptureSession);
previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill;
previewLayer.Frame = View.Frame;
View.Layer.InsertSublayer(previewLayer, 0);
StillImageOutput = new AVCaptureStillImageOutput();
StillImageOutput.OutputSettings = new NSDictionary(AVVideo.CodecKey, AVVideo.CodecJPEG);
CaptureSession.AddOutput(StillImageOutput);
CaptureSession.StartRunning();
}
bool SetupCaptureSession()
{
var availableResolutions = new List <CameraResolution> ();
var consideredResolutions = new Dictionary <NSString, CameraResolution> {
{ AVCaptureSession.Preset352x288, new CameraResolution {
Width = 352, Height = 288
} },
{ AVCaptureSession.PresetMedium, new CameraResolution {
Width = 480, Height = 360
} }, //480x360
{ AVCaptureSession.Preset640x480, new CameraResolution {
Width = 640, Height = 480
} },
{ AVCaptureSession.Preset1280x720, new CameraResolution {
Width = 1280, Height = 720
} },
{ AVCaptureSession.Preset1920x1080, new CameraResolution {
Width = 1920, Height = 1080
} }
};
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.Preset640x480
};
// create a device input and attach it to the session
// var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
AVCaptureDevice captureDevice = null;
var devices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
foreach (var device in devices)
{
captureDevice = device;
if (options.UseFrontCameraIfAvailable.HasValue &&
options.UseFrontCameraIfAvailable.Value &&
device.Position == AVCaptureDevicePosition.Front)
{
break; //Front camera successfully set
}
else if (device.Position == AVCaptureDevicePosition.Back && (!options.UseFrontCameraIfAvailable.HasValue || !options.UseFrontCameraIfAvailable.Value))
{
break; //Back camera succesfully set
}
}
if (captureDevice == null)
{
Console.WriteLine("No captureDevice - this won't work on the simulator, try a physical device");
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
}
return(false);
}
CameraResolution resolution = null;
// Find resolution
// Go through the resolutions we can even consider
foreach (var cr in consideredResolutions)
{
// Now check to make sure our selected device supports the resolution
// so we can add it to the list to pick from
if (captureDevice.SupportsAVCaptureSessionPreset(cr.Key))
{
availableResolutions.Add(cr.Value);
}
}
resolution = options.GetResolution(availableResolutions);
// See if the user selected a resolution
if (resolution != null)
{
// Now get the preset string from the resolution chosen
var preset = (from c in consideredResolutions
where c.Value.Width == resolution.Width &&
c.Value.Height == resolution.Height
select c.Key).FirstOrDefault();
// If we found a matching preset, let's set it on the session
if (!string.IsNullOrEmpty(preset))
{
session.SessionPreset = preset;
}
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
Console.WriteLine("No input - this won't work on the simulator, try a physical device");
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
}
return(false);
}
else
{
session.AddInput(input);
}
foundResult = false;
//Detect barcodes with built in avcapture stuff
AVCaptureMetadataOutput metadataOutput = new AVCaptureMetadataOutput();
captureDelegate = new CaptureDelegate(metaDataObjects =>
{
if (!analyzing)
{
return;
}
//Console.WriteLine("Found MetaData Objects");
var msSinceLastPreview = (DateTime.UtcNow - lastAnalysis).TotalMilliseconds;
if (msSinceLastPreview < options.DelayBetweenAnalyzingFrames ||
(wasScanned && msSinceLastPreview < options.DelayBetweenContinuousScans) ||
working)
//|| CancelTokenSource.IsCancellationRequested)
{
return;
}
working = true;
wasScanned = false;
lastAnalysis = DateTime.UtcNow;
var mdo = metaDataObjects.FirstOrDefault();
if (mdo == null)
{
return;
}
var readableObj = mdo as AVMetadataMachineReadableCodeObject;
if (readableObj == null)
{
return;
}
wasScanned = true;
var zxingFormat = ZXingBarcodeFormatFromAVCaptureBarcodeFormat(readableObj.Type.ToString());
var rs = new ZXing.Result(readableObj.StringValue, null, null, zxingFormat);
resultCallback(rs);
working = false;
});
metadataOutput.SetDelegate(captureDelegate, DispatchQueue.MainQueue);
session.AddOutput(metadataOutput);
//Setup barcode formats
if (ScanningOptions.PossibleFormats != null && ScanningOptions.PossibleFormats.Count > 0)
{
#if __UNIFIED__
var formats = AVMetadataObjectType.None;
foreach (var f in ScanningOptions.PossibleFormats)
{
formats |= AVCaptureBarcodeFormatFromZXingBarcodeFormat(f);
}
formats &= ~AVMetadataObjectType.None;
metadataOutput.MetadataObjectTypes = formats;
#else
var formats = new List <string> ();
foreach (var f in ScanningOptions.PossibleFormats)
{
formats.AddRange(AVCaptureBarcodeFormatFromZXingBarcodeFormat(f));
}
metadataOutput.MetadataObjectTypes = (from f in formats.Distinct() select new NSString(f)).ToArray();
#endif
}
else
{
metadataOutput.MetadataObjectTypes = metadataOutput.AvailableMetadataObjectTypes;
}
previewLayer = new AVCaptureVideoPreviewLayer(session);
//Framerate set here (15 fps)
if (previewLayer.RespondsToSelector(new Selector("connection")))
{
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0))
{
var perf1 = PerformanceCounter.Start();
NSError lockForConfigErr = null;
captureDevice.LockForConfiguration(out lockForConfigErr);
if (lockForConfigErr == null)
{
captureDevice.ActiveVideoMinFrameDuration = new CMTime(1, 10);
captureDevice.UnlockForConfiguration();
}
PerformanceCounter.Stop(perf1, "PERF: ActiveVideoMinFrameDuration Took {0} ms");
}
else
{
previewLayer.Connection.VideoMinFrameDuration = new CMTime(1, 10);
}
}
#if __UNIFIED__
previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill;
#else
previewLayer.LayerVideoGravity = AVLayerVideoGravity.ResizeAspectFill;
#endif
previewLayer.Frame = new CGRect(0, 0, this.Frame.Width, this.Frame.Height);
previewLayer.Position = new CGPoint(this.Layer.Bounds.Width / 2, (this.Layer.Bounds.Height / 2));
layerView = new UIView(new CGRect(0, 0, this.Frame.Width, this.Frame.Height));
layerView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
layerView.Layer.AddSublayer(previewLayer);
this.AddSubview(layerView);
ResizePreview(UIApplication.SharedApplication.StatusBarOrientation);
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
//overlayView.LayoutSubviews ();
}
session.StartRunning();
Console.WriteLine("RUNNING!!!");
//output.AlwaysDiscardsLateVideoFrames = true;
Console.WriteLine("SetupCamera Finished");
//session.AddOutput (output);
//session.StartRunning ();
if (captureDevice.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
NSError err = null;
if (captureDevice.LockForConfiguration(out err))
{
if (captureDevice.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
captureDevice.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
}
else if (captureDevice.IsFocusModeSupported(AVCaptureFocusMode.AutoFocus))
{
captureDevice.FocusMode = AVCaptureFocusMode.AutoFocus;
}
if (captureDevice.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
captureDevice.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
}
else if (captureDevice.IsExposureModeSupported(AVCaptureExposureMode.AutoExpose))
{
captureDevice.ExposureMode = AVCaptureExposureMode.AutoExpose;
}
if (captureDevice.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
captureDevice.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
}
else if (captureDevice.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.AutoWhiteBalance))
{
captureDevice.WhiteBalanceMode = AVCaptureWhiteBalanceMode.AutoWhiteBalance;
}
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0) && captureDevice.AutoFocusRangeRestrictionSupported)
{
captureDevice.AutoFocusRangeRestriction = AVCaptureAutoFocusRangeRestriction.Near;
}
if (captureDevice.FocusPointOfInterestSupported)
{
captureDevice.FocusPointOfInterest = new CGPoint(0.5f, 0.5f);
}
if (captureDevice.ExposurePointOfInterestSupported)
{
captureDevice.ExposurePointOfInterest = new CGPoint(0.5f, 0.5f);
}
captureDevice.UnlockForConfiguration();
}
else
{
Console.WriteLine("Failed to Lock for Config: " + err.Description);
}
}
return(true);
}
private void initializeRecorder()
{
//Initialize sessions
session = new AVCaptureSession ();
//get inputs and add them to the session.
try{
//add front facing camera
foreach(AVCaptureDevice capdevice in AVCaptureDevice.Devices)
{
if(capdevice.HasMediaType(AVMediaType.Video))
{
if(capdevice.Position == AVCaptureDevicePosition.Front)
{
device = capdevice;
}
}
}
//device = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
input = AVCaptureDeviceInput.FromDevice(device);
session.AddInput(input);
//add audio capture device
audioDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Audio);
audioInput = AVCaptureDeviceInput.FromDevice(audioDevice);
session.AddInput(audioInput);
}
catch(Exception ex) {
return;
}
}
/// <summary>
/// Returns an audio device
/// </summary>
/// <returns>
/// The audio device.
/// </returns>
static AVCaptureDevice AudioDevice()
{
var devices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Audio);
return((devices.Length == 0) ? null : devices [0]);
}
private void StartCameraWithCompletionHandler(Action<bool, NSError> completion)
{
captureSession = new AVCaptureSession ();
captureSession.BeginConfiguration ();
captureDevice = CameraDeviceForPosition (AVCaptureDevicePosition.Back);
if (captureDevice == null) {
string message = "Error message back camera - not found";
string title = "Error";
ShowErrorMessage (message, title);
return;
}
NSError error;
AVCaptureDeviceInput deviceInput = AVCaptureDeviceInput.FromDevice (captureDevice, out error);
if (deviceInput == null) {
Console.WriteLine ("This error should be handled appropriately in your app -- obtain device input: {0}", error);
string message = "Error message back camera - can't open.";
string title = "Error";
ShowErrorMessage (message, title);
return;
}
captureSession.AddInput (deviceInput);
stillImageOutput = new AVCaptureStillImageOutput ();
//Or instead of JPEG, we can use one of the following pixel formats: BGRA, 420f output
stillImageOutput.OutputSettings = new NSDictionary (AVVideo.CodecKey, AVVideo.CodecJPEG);
captureSession.AddOutput (stillImageOutput);
cameraPreviewView.ConfigureCaptureSession (captureSession, stillImageOutput);
captureSession.SessionPreset = AVCaptureSession.PresetPhoto;
captureDeviceFormat = captureDevice.ActiveFormat;
captureSession.CommitConfiguration ();
captureSession.StartRunning ();
maxBracketCount = stillImageOutput.MaxBracketedCaptureStillImageCount;
PrepareBracketsWithCompletionHandler (completion);
}
bool SetupCaptureSession()
{
var started = DateTime.UtcNow;
var availableResolutions = new List <CameraResolution> ();
var consideredResolutions = new Dictionary <NSString, CameraResolution> {
{ AVCaptureSession.Preset352x288, new CameraResolution {
Width = 352, Height = 288
} },
{ AVCaptureSession.PresetMedium, new CameraResolution {
Width = 480, Height = 360
} }, //480x360
{ AVCaptureSession.Preset640x480, new CameraResolution {
Width = 640, Height = 480
} },
{ AVCaptureSession.Preset1280x720, new CameraResolution {
Width = 1280, Height = 720
} },
{ AVCaptureSession.Preset1920x1080, new CameraResolution {
Width = 1920, Height = 1080
} }
};
// configure the capture session for low resolution, change this if your code
// can cope with more data or volume
session = new AVCaptureSession()
{
SessionPreset = AVCaptureSession.Preset640x480
};
// create a device input and attach it to the session
// var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video);
AVCaptureDevice captureDevice = null;
var devices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
foreach (var device in devices)
{
captureDevice = device;
if (options.UseFrontCameraIfAvailable.HasValue &&
options.UseFrontCameraIfAvailable.Value &&
device.Position == AVCaptureDevicePosition.Front)
{
break; //Front camera successfully set
}
else if (device.Position == AVCaptureDevicePosition.Back && (!options.UseFrontCameraIfAvailable.HasValue || !options.UseFrontCameraIfAvailable.Value))
{
break; //Back camera succesfully set
}
}
if (captureDevice == null)
{
Console.WriteLine("No captureDevice - this won't work on the simulator, try a physical device");
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
}
return(false);
}
CameraResolution resolution = null;
// Find resolution
// Go through the resolutions we can even consider
foreach (var cr in consideredResolutions)
{
// Now check to make sure our selected device supports the resolution
// so we can add it to the list to pick from
if (captureDevice.SupportsAVCaptureSessionPreset(cr.Key))
{
availableResolutions.Add(cr.Value);
}
}
resolution = options.GetResolution(availableResolutions);
// See if the user selected a resolution
if (resolution != null)
{
// Now get the preset string from the resolution chosen
var preset = (from c in consideredResolutions
where c.Value.Width == resolution.Width &&
c.Value.Height == resolution.Height
select c.Key).FirstOrDefault();
// If we found a matching preset, let's set it on the session
if (!string.IsNullOrEmpty(preset))
{
session.SessionPreset = preset;
}
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
Console.WriteLine("No input - this won't work on the simulator, try a physical device");
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
}
return(false);
}
else
{
session.AddInput(input);
}
var startedAVPreviewLayerAlloc = DateTime.UtcNow;
previewLayer = new AVCaptureVideoPreviewLayer(session);
var totalAVPreviewLayerAlloc = DateTime.UtcNow - startedAVPreviewLayerAlloc;
Console.WriteLine("PERF: Alloc AVCaptureVideoPreviewLayer took {0} ms.", totalAVPreviewLayerAlloc.TotalMilliseconds);
// //Framerate set here (15 fps)
// if (UIDevice.CurrentDevice.CheckSystemVersion (7, 0))
// {
// var perf1 = PerformanceCounter.Start ();
// NSError lockForConfigErr = null;
// captureDevice.LockForConfiguration (out lockForConfigErr);
// if (lockForConfigErr == null)
// {
// captureDevice.ActiveVideoMinFrameDuration = new CMTime (1, 10);
// captureDevice.UnlockForConfiguration ();
// }
// PerformanceCounter.Stop (perf1, "PERF: ActiveVideoMinFrameDuration Took {0} ms");
// }
// else
// previewLayer.Connection.VideoMinFrameDuration = new CMTime(1, 10);
var perf2 = PerformanceCounter.Start();
#if __UNIFIED__
previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill;
#else
previewLayer.LayerVideoGravity = AVLayerVideoGravity.ResizeAspectFill;
#endif
previewLayer.Frame = new CGRect(0, 0, this.Frame.Width, this.Frame.Height);
previewLayer.Position = new CGPoint(this.Layer.Bounds.Width / 2, (this.Layer.Bounds.Height / 2));
layerView = new UIView(new CGRect(0, 0, this.Frame.Width, this.Frame.Height));
layerView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight;
layerView.Layer.AddSublayer(previewLayer);
this.AddSubview(layerView);
ResizePreview(UIApplication.SharedApplication.StatusBarOrientation);
if (overlayView != null)
{
this.AddSubview(overlayView);
this.BringSubviewToFront(overlayView);
//overlayView.LayoutSubviews ();
}
PerformanceCounter.Stop(perf2, "PERF: Setting up layers took {0} ms");
var perf3 = PerformanceCounter.Start();
session.StartRunning();
PerformanceCounter.Stop(perf3, "PERF: session.StartRunning() took {0} ms");
var perf4 = PerformanceCounter.Start();
var videoSettings = NSDictionary.FromObjectAndKey(new NSNumber((int)CVPixelFormatType.CV32BGRA),
CVPixelBuffer.PixelFormatTypeKey);
// create a VideoDataOutput and add it to the sesion
output = new AVCaptureVideoDataOutput {
WeakVideoSettings = videoSettings
};
// configure the output
queue = new DispatchQueue("ZxingScannerView"); // (Guid.NewGuid().ToString());
var barcodeReader = new BarcodeReaderiOS(null, (img) =>
{
var src = new RGBLuminanceSourceiOS(img); //, bmp.Width, bmp.Height);
//Don't try and rotate properly if we're autorotating anyway
if (ScanningOptions.AutoRotate.HasValue && ScanningOptions.AutoRotate.Value)
{
return(src);
}
var tmpInterfaceOrientation = UIInterfaceOrientation.Portrait;
InvokeOnMainThread(() => tmpInterfaceOrientation = UIApplication.SharedApplication.StatusBarOrientation);
switch (tmpInterfaceOrientation)
{
case UIInterfaceOrientation.Portrait:
return(src.rotateCounterClockwise().rotateCounterClockwise().rotateCounterClockwise());
case UIInterfaceOrientation.PortraitUpsideDown:
return(src.rotateCounterClockwise().rotateCounterClockwise().rotateCounterClockwise());
case UIInterfaceOrientation.LandscapeLeft:
return(src);
case UIInterfaceOrientation.LandscapeRight:
return(src);
}
return(src);
}, null, null); //(p, w, h, f) => new RGBLuminanceSource(p, w, h, RGBLuminanceSource.BitmapFormat.Unknown));
if (ScanningOptions.TryHarder.HasValue)
{
Console.WriteLine("TRY_HARDER: " + ScanningOptions.TryHarder.Value);
barcodeReader.Options.TryHarder = ScanningOptions.TryHarder.Value;
}
if (ScanningOptions.PureBarcode.HasValue)
{
barcodeReader.Options.PureBarcode = ScanningOptions.PureBarcode.Value;
}
if (ScanningOptions.AutoRotate.HasValue)
{
Console.WriteLine("AUTO_ROTATE: " + ScanningOptions.AutoRotate.Value);
barcodeReader.AutoRotate = ScanningOptions.AutoRotate.Value;
}
if (!string.IsNullOrEmpty(ScanningOptions.CharacterSet))
{
barcodeReader.Options.CharacterSet = ScanningOptions.CharacterSet;
}
if (ScanningOptions.TryInverted.HasValue)
{
barcodeReader.TryInverted = ScanningOptions.TryInverted.Value;
}
if (ScanningOptions.PossibleFormats != null && ScanningOptions.PossibleFormats.Count > 0)
{
barcodeReader.Options.PossibleFormats = new List <BarcodeFormat>();
foreach (var pf in ScanningOptions.PossibleFormats)
{
barcodeReader.Options.PossibleFormats.Add(pf);
}
}
outputRecorder = new OutputRecorder(ScanningOptions, img =>
{
if (!IsAnalyzing)
{
return(false);
}
try
{
//var sw = new System.Diagnostics.Stopwatch();
//sw.Start();
var rs = barcodeReader.Decode(img);
//sw.Stop();
//Console.WriteLine("Decode Time: {0} ms", sw.ElapsedMilliseconds);
if (rs != null)
{
resultCallback(rs);
return(true);
}
}
catch (Exception ex)
{
Console.WriteLine("DECODE FAILED: " + ex);
}
return(false);
});
output.AlwaysDiscardsLateVideoFrames = true;
output.SetSampleBufferDelegate(outputRecorder, queue);
PerformanceCounter.Stop(perf4, "PERF: SetupCamera Finished. Took {0} ms.");
session.AddOutput(output);
//session.StartRunning ();
var perf5 = PerformanceCounter.Start();
NSError err = null;
if (captureDevice.LockForConfiguration(out err))
{
if (captureDevice.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
captureDevice.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
}
else if (captureDevice.IsFocusModeSupported(AVCaptureFocusMode.AutoFocus))
{
captureDevice.FocusMode = AVCaptureFocusMode.AutoFocus;
}
if (captureDevice.IsExposureModeSupported(AVCaptureExposureMode.ContinuousAutoExposure))
{
captureDevice.ExposureMode = AVCaptureExposureMode.ContinuousAutoExposure;
}
else if (captureDevice.IsExposureModeSupported(AVCaptureExposureMode.AutoExpose))
{
captureDevice.ExposureMode = AVCaptureExposureMode.AutoExpose;
}
if (captureDevice.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance))
{
captureDevice.WhiteBalanceMode = AVCaptureWhiteBalanceMode.ContinuousAutoWhiteBalance;
}
else if (captureDevice.IsWhiteBalanceModeSupported(AVCaptureWhiteBalanceMode.AutoWhiteBalance))
{
captureDevice.WhiteBalanceMode = AVCaptureWhiteBalanceMode.AutoWhiteBalance;
}
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0) && captureDevice.AutoFocusRangeRestrictionSupported)
{
captureDevice.AutoFocusRangeRestriction = AVCaptureAutoFocusRangeRestriction.Near;
}
if (captureDevice.FocusPointOfInterestSupported)
{
captureDevice.FocusPointOfInterest = new PointF(0.5f, 0.5f);
}
if (captureDevice.ExposurePointOfInterestSupported)
{
captureDevice.ExposurePointOfInterest = new PointF(0.5f, 0.5f);
}
captureDevice.UnlockForConfiguration();
}
else
{
Console.WriteLine("Failed to Lock for Config: " + err.Description);
}
PerformanceCounter.Stop(perf5, "PERF: Setup Focus in {0} ms.");
return(true);
}
static bool TryGetDefaultVideoCamera (AVCaptureDeviceType type, AVCaptureDevicePosition position, out AVCaptureDevice device)
{
device = AVCaptureDevice.GetDefaultDevice (type, AVMediaType.Video, position);
return device != null;
}
