/******************************* MAIN FUNCTIONS *******************************/ public override void ViewDidLoad () { base.ViewDidLoad (); var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType (AVMediaType.Video); var input = AVCaptureDeviceInput.FromDevice (captureDevice); CaptureSession = new AVCaptureSession(); CaptureSession.AddInput (input as AVCaptureInput); var captureMetadataOutput = new AVCaptureMetadataOutput(); metadataDelegate = new MetadataObjectsDelegate(); metadataDelegate.outer = this; captureMetadataOutput.SetDelegate(metadataDelegate, DispatchQueue.MainQueue); CaptureSession.AddOutput(captureMetadataOutput); captureMetadataOutput.MetadataObjectTypes = AVMetadataObjectType.QRCode; VideoPreviewLayer = new AVCaptureVideoPreviewLayer (CaptureSession); VideoPreviewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill; VideoPreviewLayer.Frame = View.Layer.Bounds; View.Layer.AddSublayer (VideoPreviewLayer); View.BringSubviewToFront (messageLabel); QRCodeFrameView = new UIView (); QRCodeFrameView.Layer.BorderColor = UIColor.Green.CGColor; QRCodeFrameView.Layer.BorderWidth = 2; View.AddSubview (QRCodeFrameView); View.BringSubviewToFront (QRCodeFrameView); CaptureSession.StartRunning(); cancelButton.Clicked += (sender, e) => { this.DismissViewController (true, null); }; }
public override void ViewDidLoad () { base.ViewDidLoad (); sessionManager = new SessionManager (); sessionManager.StartRunning (); previewLayer = new AVCaptureVideoPreviewLayer (sessionManager.CaptureSession) { Frame = previewView.Bounds, VideoGravity = AVLayerVideoGravity.ResizeAspectFill }; if (previewLayer.Connection != null && previewLayer.Connection.SupportsVideoOrientation) previewLayer.Connection.VideoOrientation = AVCaptureVideoOrientation.LandscapeLeft; previewView.Layer.AddSublayer (previewLayer); previewView.Layer.MasksToBounds = true; barcodeTargetLayer = new CALayer () { Frame = View.Layer.Bounds }; View.Layer.AddSublayer (barcodeTargetLayer); synth = new Synth (); synth.LoadPreset (this); // the loop that continuously looks for barcodes to detect stepTimer = NSTimer.CreateScheduledTimer (0.15, this, new Selector ("step:"), null, true); }
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 var 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"); qrScanner = new QrScanner (this); output.SetSampleBufferDelegateAndQueue (qrScanner, 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 (); sessionManager = new SessionManager (); sessionManager.StartRunning (); previewLayer = new AVCaptureVideoPreviewLayer (sessionManager.CaptureSession) { Frame = previewView.Bounds, VideoGravity = AVLayerVideoGravity.ResizeAspectFill }; if (previewLayer.Connection != null && previewLayer.Connection.SupportsVideoOrientation) previewLayer.Connection.VideoOrientation = AVCaptureVideoOrientation.LandscapeLeft; previewView.Layer.AddSublayer (previewLayer); previewView.Layer.MasksToBounds = true; barcodeTargetLayer = new CALayer () { Frame = View.Layer.Bounds }; View.Layer.AddSublayer (barcodeTargetLayer); synth = new Synth (); synth.LoadPreset (this); }
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(); }
public void ConfigureCaptureSession (AVCaptureSession captureSession, AVCaptureStillImageOutput captureOutput) { if (previewLayer != null) { previewLayer.RemoveFromSuperLayer (); previewLayer = null; } previewLayer = new AVCaptureVideoPreviewLayer (captureSession) { VideoGravity = AVPlayerLayer.GravityResizeAspect, Frame = Bounds }; Layer.AddSublayer (previewLayer); CaptureOutput = captureOutput; CaptureOutput.AddObserver (this, capturingStillImageKeypath, NSKeyValueObservingOptions.New, IntPtr.Zero); }
public void InitAndStartCamera() { session = new AVCaptureSession { SessionPreset = AVCaptureSession.PresetMedium }; var captureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video); NSError error; var videoInput = AVCaptureDeviceInput.FromDevice(captureDevice, out error); if (videoInput == null || !session.CanAddInput(videoInput)) return; session.AddInput(videoInput); previewLayer = new AVCaptureVideoPreviewLayer(session) { Frame = rootView.Bounds }; previewLayer.Connection.VideoOrientation = configDicByRotationChanged[UIApplication.SharedApplication.StatusBarOrientation]; previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill; cameraView.Layer.AddSublayer(previewLayer); session.StartRunning(); }
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; }
public override void ViewDidLoad () { base.ViewDidLoad (); session = new AVCaptureSession (); var camera = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video); var input = AVCaptureDeviceInput.FromDevice(camera); session.AddInput(input); output = new AVCaptureMetadataOutput(); var metadataDelegate = new MetadataOutputDelegate(); output.SetDelegate(metadataDelegate, DispatchQueue.MainQueue); session.AddOutput(output); output.MetadataObjectTypes = new NSString[] { AVMetadataObject.TypeQRCode, AVMetadataObject.TypeEAN13Code }; var previewLayer = new AVCaptureVideoPreviewLayer(session); //var view = new ContentView(UIColor.LightGray, previewLayer, metadataDelegate); previewLayer.MasksToBounds = true; previewLayer.VideoGravity = AVCaptureVideoPreviewLayer.GravityResizeAspectFill; previewLayer.Frame = UIScreen.MainScreen.Bounds; this.View.Layer.AddSublayer(previewLayer); metadataDelegate.MetadataFound += (s, e) => { session.StopRunning(); new UIAlertView("Scanned!",e.StringValue, null ,"OK",null).Show(); }; session.StartRunning(); }
void Initialize(bool defaultTorchOn, bool vibrationOnDetected, bool startScanningOnCreate, int scanInterval) { Configuration.IsScanning = startScanningOnCreate; CaptureSession = new AVCaptureSession(); CaptureSession.BeginConfiguration(); this.AutoresizingMask = UIViewAutoresizing.FlexibleDimensions; previewLayer = new AVCaptureVideoPreviewLayer(CaptureSession) { Frame = this.Bounds, VideoGravity = AVLayerVideoGravity.ResizeAspectFill }; var videoDevices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video); var cameraPosition = AVCaptureDevicePosition.Back; //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); CaptureSession.SessionPreset = AVFoundation.AVCaptureSession.Preset1280x720; Layer.AddSublayer(previewLayer); CaptureSession.CommitConfiguration(); VideoDataOutput = new AVCaptureVideoDataOutput { AlwaysDiscardsLateVideoFrames = true, WeakVideoSettings = new CVPixelBufferAttributes { PixelFormatType = CVPixelFormatType.CV32BGRA } .Dictionary }; captureVideoDelegate = new CaptureVideoDelegate(vibrationOnDetected, scanInterval); captureVideoDelegate.OnDetected += (list) => { InvokeOnMainThread(() => { //CaptureSession.StopRunning(); this.OnDetected?.Invoke(list); }); }; VideoDataOutput.SetSampleBufferDelegateQueue(captureVideoDelegate, CoreFoundation.DispatchQueue.MainQueue); CaptureSession.AddOutput(VideoDataOutput); InvokeOnMainThread(() => { CaptureSession.StartRunning(); //Torch on by default if (defaultTorchOn && !GoogleVisionBarCodeScanner.Methods.IsTorchOn()) { GoogleVisionBarCodeScanner.Methods.ToggleFlashlight(); } }); }
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() { // 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); } 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(); var dg = new CaptureDelegate(metaDataObjects => { if (foundResult) { return; } //Console.WriteLine("Found MetaData Objects"); var mdo = metaDataObjects.FirstOrDefault(); if (mdo == null) { return; } var readableObj = mdo as AVMetadataMachineReadableCodeObject; if (readableObj == null) { return; } foundResult = true; //Console.WriteLine("Barcode: " + readableObj.StringValue); var zxingFormat = ZXingBarcodeFormatFromAVCaptureBarcodeFormat(readableObj.Type.ToString()); var rs = new ZXing.Result(readableObj.StringValue, null, null, zxingFormat); resultCallback(rs); }); metadataOutput.SetDelegate(dg, DispatchQueue.MainQueue); session.AddOutput(metadataOutput); //Setup barcode formats if (ScanningOptions.PossibleFormats != null && ScanningOptions.PossibleFormats.Count > 0) { var formats = AVMetadataObjectType.None; foreach (var f in ScanningOptions.PossibleFormats) { formats |= AVCaptureBarcodeFormatFromZXingBarcodeFormat(f); } formats &= ~AVMetadataObjectType.None; metadataOutput.MetadataObjectTypes = formats; } 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); }
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 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 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); } } catch (Exception ex) { Console.WriteLine("DECODE FAILED: " + ex); } }); 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); }
private bool SetupCaptureSession() { if (CameraPreviewSettings.Instance.Decoder == null) { return(false); } 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 (CameraPreviewSettings.Instance.ScannerOptions.UseFrontCameraIfAvailable.HasValue && CameraPreviewSettings.Instance.ScannerOptions.UseFrontCameraIfAvailable.Value && device.Position == AVCaptureDevicePosition.Front) { break; //Front camera successfully set } else if (device.Position == AVCaptureDevicePosition.Back && (!CameraPreviewSettings.Instance.ScannerOptions.UseFrontCameraIfAvailable.HasValue || !CameraPreviewSettings.Instance.ScannerOptions.UseFrontCameraIfAvailable.Value)) { break; //Back camera successfully set } } if (captureDevice == null) { Console.WriteLine("No captureDevice - this won't work on the simulator, try a physical device"); 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 = CameraPreviewSettings.Instance.ScannerOptions.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"); return(false); } else { _session.AddInput(input); } var startedAvPreviewLayerAlloc = PerformanceCounter.Start(); _previewLayer = new AVCaptureVideoPreviewLayer(_session); PerformanceCounter.Stop(startedAvPreviewLayerAlloc, "Alloc AVCaptureVideoPreviewLayer took {0} ms."); 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)) { AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight }; _layerView.Layer.AddSublayer(_previewLayer); this.AddSubview(_layerView); ResizePreview(UIApplication.SharedApplication.StatusBarOrientation); 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("CamerPreviewView"); // (Guid.NewGuid().ToString()); _outputRecorder = new DefaultOutputRecorder(_resultCallback); _output.AlwaysDiscardsLateVideoFrames = true; _output.SetSampleBufferDelegateQueue(_outputRecorder, _queue); PerformanceCounter.Stop(perf4, "PERF: SetupCamera Finished. Took {0} ms."); _session.AddOutput(_output); //session.StartRunning (); var perf5 = PerformanceCounter.Start(); if (captureDevice.LockForConfiguration(out var 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 { Logger.Log("Failed to Lock for Config: " + err.Description); } PerformanceCounter.Stop(perf5, "PERF: Setup Focus in {0} ms."); return(true); }
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); }
public UiCameraPreview(CameraPreview camera) { this._CameraOptions = camera.Camera; this._IsPreviewing = camera.IsPreviewing; this._Camera = camera; this.CaptureSession = new AVCaptureSession(); this._PreviewLayer = new AVCaptureVideoPreviewLayer(this.CaptureSession) { Frame = this.Bounds, VideoGravity = AVLayerVideoGravity.ResizeAspectFill }; this.Layer.AddSublayer(this._PreviewLayer); this.Initialize(); MessagingCenter.Subscribe <LifeCyclePayload>(this, "", (p) => { switch (p.Status) { case LifeCycle.OnSleep: //Sleep状態になるときにリソース解放 this.Release(); break; case LifeCycle.OnResume: //Resume状態になるときに初期化 this.Initialize(); break; } }); // Adjust size and orientation of preview image this._Notification = UIApplication.Notifications.ObserveDidChangeStatusBarOrientation((sender, args) => { switch (UIApplication.SharedApplication.StatusBarOrientation) { case UIInterfaceOrientation.Portrait: this._PreviewLayer.Connection.VideoOrientation = AVCaptureVideoOrientation.Portrait; break; case UIInterfaceOrientation.PortraitUpsideDown: this._PreviewLayer.Connection.VideoOrientation = AVCaptureVideoOrientation.PortraitUpsideDown; break; case UIInterfaceOrientation.LandscapeLeft: this._PreviewLayer.Connection.VideoOrientation = AVCaptureVideoOrientation.LandscapeLeft; break; case UIInterfaceOrientation.LandscapeRight: this._PreviewLayer.Connection.VideoOrientation = AVCaptureVideoOrientation.LandscapeRight; break; default: break; } }); this._Camera.SizeChanged += (sender, args) => { var rect = this._Camera.Bounds; this._PreviewLayer.Frame = new CGRect(new CGPoint(rect.X, rect.Y), new CGSize(rect.Width, rect.Height)); }; }
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 (ScanningOptions.UseFrontCameraIfAvailable.HasValue && ScanningOptions.UseFrontCameraIfAvailable.Value && device.Position == AVCaptureDevicePosition.Front) { break; //Front camera successfully set } else if (device.Position == AVCaptureDevicePosition.Back && (!ScanningOptions.UseFrontCameraIfAvailable.HasValue || !ScanningOptions.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) { AddSubview(overlayView); 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 = ScanningOptions.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) { AddSubview(overlayView); BringSubviewToFront(overlayView); } return(false); } else { session.AddInput(input); } foundResult = false; //Detect barcodes with built in avcapture stuff var metadataOutput = new AVCaptureMetadataOutput(); captureDelegate = new CaptureDelegate(metaDataObjects => { if (!analyzing) { return; } var msSinceLastPreview = (DateTime.UtcNow - lastAnalysis).TotalMilliseconds; if (msSinceLastPreview < ScanningOptions.DelayBetweenAnalyzingFrames || (wasScanned && msSinceLastPreview < ScanningOptions.DelayBetweenContinuousScans) || working) { return; } try { working = true; wasScanned = false; lastAnalysis = DateTime.UtcNow; var mdo = metaDataObjects.FirstOrDefault(); if (!(mdo is AVMetadataMachineReadableCodeObject readableObj)) { return; } if (readableObj.Type == AVMetadataObjectType.CatBody || readableObj.Type == AVMetadataObjectType.DogBody || readableObj.Type == AVMetadataObjectType.Face || readableObj.Type == AVMetadataObjectType.HumanBody || readableObj.Type == AVMetadataObjectType.SalientObject) { return; } wasScanned = true; var zxingFormat = ZXingBarcodeFormatFromAVCaptureBarcodeFormat(readableObj.Type.ToString()); var rs = new ZXing.Result(readableObj.StringValue, null, null, zxingFormat); resultCallback(rs); } finally { working = false; } }); metadataOutput.SetDelegate(captureDelegate, DispatchQueue.MainQueue); session.AddOutput(metadataOutput); //Setup barcode formats if (ScanningOptions?.PossibleFormats?.Any() ?? false) { var formats = AVMetadataObjectType.None; foreach (var f in ScanningOptions.PossibleFormats) { formats |= AVCaptureBarcodeFormatFromZXingBarcodeFormat(f); } formats &= ~AVMetadataObjectType.None; metadataOutput.MetadataObjectTypes = formats; } else { var availableMetaObjTypes = metadataOutput.AvailableMetadataObjectTypes; metadataOutput.MetadataObjectTypes = metadataOutput.AvailableMetadataObjectTypes; } previewLayer = new AVCaptureVideoPreviewLayer(session); previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill; 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); AddSubview(layerView); ResizePreview(UIApplication.SharedApplication.StatusBarOrientation); if (overlayView != null) { AddSubview(overlayView); BringSubviewToFront(overlayView); } 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); }
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 override async void ViewDidLoad() { base.ViewDidLoad(); NavigationController.SetNavigationBarHidden(true, false); CGRect ScreenBounds = UIScreen.MainScreen.Bounds; View.Frame = ScreenBounds; View.Bounds = ScreenBounds; previewLayer = new AVCaptureVideoPreviewLayer { BackgroundColor = UIColor.LightGray.CGColor, MasksToBounds = true, VideoGravity = AVLayerVideoGravity.ResizeAspectFill, Frame = this.View.Bounds }; View.Layer.AddSublayer(previewLayer); //PreivewImage PreviewImage = new UIImageView() { Frame = new RectangleF(0, 0, (float)ScreenBounds.Width / 4, (float)View.Frame.Height / 4), Alpha = 0.75f, UserInteractionEnabled = true }; //TakePhoto button TakePhotoButton = new UIButton(UIButtonType.System) { Frame = new RectangleF((float)ScreenBounds.Width - 70f, ((float)View.Frame.Height / 2) - 30f, 60f, 60f), BackgroundColor = UIColor.Black.ColorWithAlpha(0.25f), }; TakePhotoButton.TintColor = UIColor.White; TakePhotoButton.SetImage(UIImage.FromFile("Images/Camera.png"), UIControlState.Normal); TakePhotoButton.Layer.CornerRadius = 30f; TakePhotoButton.SetCommand(this.ViewModel.DescribeImageCommand); //SwapCamera button SwapCameraButton = new UIButton(UIButtonType.System) { Frame = new RectangleF((float)ScreenBounds.Width / 2 - 30f, 10f, 60f, 60f), BackgroundColor = UIColor.Black.ColorWithAlpha(0.25f), }; SwapCameraButton.TintColor = UIColor.White; SwapCameraButton.SetImage(UIImage.FromFile("Images/SwitchCamera.png"), UIControlState.Normal); SwapCameraButton.Layer.CornerRadius = 30f; SwapCameraButton.SetCommand(this.ViewModel.SwapCameraCommand); //Settings button SettingsButton = new UIButton(UIButtonType.System) { Frame = new RectangleF((float)ScreenBounds.Width - 70f, 10f, 60f, 60f), BackgroundColor = UIColor.Black.ColorWithAlpha(0.25f), }; SettingsButton.TintColor = UIColor.White; SettingsButton.SetImage(UIImage.FromFile("Images/Settings.png"), UIControlState.Normal); SettingsButton.Layer.CornerRadius = 30f; SettingsButton.SetCommand(this.ViewModel.GotoSettingsCommand); //Message Label MessageText = new UITextView { Frame = new RectangleF(40f, (float)View.Frame.Height - 180f, (float)UIScreen.MainScreen.Bounds.Width - 80f, 180f), TextAlignment = UITextAlignment.Center, TextColor = UIColor.White, Text = Strings.AppName.Localize(), UserInteractionEnabled = false, BackgroundColor = UIColor.FromRGBA(255, 255, 255, 0) }; MessageText.Font = MessageText.Font.WithSize(24.0f); View.AddSubview(TakePhotoButton); View.AddSubview(SwapCameraButton); View.AddSubview(SettingsButton); View.AddSubview(PreviewImage); View.AddSubview(MessageText); // Tap PreviewImage.AddGestureRecognizer(new UITapGestureRecognizer(tap => { if (PreviewImageCollapsed) { PreviewImage.Frame = new RectangleF(0, 0, (float)ScreenBounds.Width, (float)View.Frame.Height); PreviewImage.Alpha = 1f; } else { PreviewImage.Frame = new RectangleF(0, 0, (float)ScreenBounds.Width / 4, (float)View.Frame.Height / 4); PreviewImage.Alpha = 0.75f; } PreviewImageCollapsed = !PreviewImageCollapsed; })); this.RegisterMessages(); this.bindings = new List <Binding>() { this.SetBinding(() => ViewModel.StatusMessage, () => MessageText.Text, BindingMode.OneWay) }; await ViewModel.InitializeStreamingAsync(); await ViewModel.CheckShowConsentAsync(); }
bool SetupCaptureSession() { session = new AVCaptureSession(); AVCaptureDevice device = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video); if (device == null) { Console.WriteLine("No video camera (in simulator?)"); return false; // simulator? } NSError error = null; AVCaptureDeviceInput input = AVCaptureDeviceInput.FromDevice(device, out error); if (input == null) Console.WriteLine("Error: " + error); else session.AddInput(input); AVCaptureMetadataOutput output = new AVCaptureMetadataOutput(); var dg = new CaptureDelegate(this); output.SetDelegate(dg, MonoTouch.CoreFoundation.DispatchQueue.MainQueue); session.AddOutput(output); // This could be any list of supported barcode types output.MetadataObjectTypes = new NSString[] {AVMetadataObject.TypeQRCode, AVMetadataObject.TypeAztecCode}; // OR you could just accept "all" with the following line; // output.MetadataObjectTypes = output.AvailableMetadataObjectTypes; // empty // DEBUG: use this if you're curious about the available types // foreach (var t in output.AvailableMetadataObjectTypes) // Console.WriteLine(t); AVCaptureVideoPreviewLayer previewLayer = new AVCaptureVideoPreviewLayer(session); //previewLayer.Frame = new RectangleF(0,0, View.Frame.Size.Width, View.Frame.Size.Height); previewLayer.Frame = new RectangleF(0, 0, 320, 290); previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill.ToString(); View.Layer.AddSublayer (previewLayer); session.StartRunning(); Console.WriteLine("StartRunning"); return true; }
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); 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); } 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 = new RectangleF(0, 0, this.Frame.Width, this.Frame.Height); previewLayer.Position = new PointF(this.Layer.Bounds.Width / 2, (this.Layer.Bounds.Height / 2)); layerView = new UIView(new RectangleF(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!!!"); // 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 () { // 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"); 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"); 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 (options.AutoRotate.HasValue && options.AutoRotate.Value) return src; switch (UIDevice.CurrentDevice.Orientation) { case UIDeviceOrientation.Portrait: return src.rotateCounterClockwise().rotateCounterClockwise().rotateCounterClockwise(); case UIDeviceOrientation.PortraitUpsideDown: return src.rotateCounterClockwise().rotateCounterClockwise().rotateCounterClockwise(); case UIDeviceOrientation.LandscapeLeft: return src; case UIDeviceOrientation.LandscapeRight: return src; } return src; }, null, null); //(p, w, h, f) => new RGBLuminanceSource(p, w, h, RGBLuminanceSource.BitmapFormat.Unknown)); if (this.options.TryHarder.HasValue) { Console.WriteLine("TRY_HARDER: " + this.options.TryHarder.Value); barcodeReader.Options.TryHarder = this.options.TryHarder.Value; } if (this.options.PureBarcode.HasValue) barcodeReader.Options.PureBarcode = this.options.PureBarcode.Value; if (this.options.AutoRotate.HasValue) { Console.WriteLine("AUTO_ROTATE: " + this.options.AutoRotate.Value); barcodeReader.AutoRotate = this.options.AutoRotate.Value; } if (!string.IsNullOrEmpty (this.options.CharacterSet)) barcodeReader.Options.CharacterSet = this.options.CharacterSet; if (this.options.TryInverted.HasValue) barcodeReader.TryInverted = this.options.TryInverted.Value; if (this.options.PossibleFormats != null && this.options.PossibleFormats.Count > 0) { barcodeReader.Options.PossibleFormats = new List<BarcodeFormat>(); foreach (var pf in this.options.PossibleFormats) barcodeReader.Options.PossibleFormats.Add(pf); } outputRecorder = new OutputRecorder (this.options, img => { 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() { 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 (ScanningOptions.UseFrontCameraIfAvailable.HasValue && ScanningOptions.UseFrontCameraIfAvailable.Value && device.Position == AVCaptureDevicePosition.Front) { break; //Front camera successfully set } else if (device.Position == AVCaptureDevicePosition.Back && (!ScanningOptions.UseFrontCameraIfAvailable.HasValue || !ScanningOptions.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 = ScanningOptions.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 = PerformanceCounter.Start(); previewLayer = new AVCaptureVideoPreviewLayer(session); PerformanceCounter.Stop(startedAVPreviewLayerAlloc, "Alloc AVCaptureVideoPreviewLayer took {0} ms."); // //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 = ScanningOptions.BuildBarcodeReader(); outputRecorder = new OutputRecorder(this, img => { var ls = img; if (!IsAnalyzing) { return(false); } try { var perfDecode = PerformanceCounter.Start(); if (shouldRotatePreviewBuffer) { ls = ls.rotateCounterClockwise(); } var result = barcodeReader.Decode(ls); PerformanceCounter.Stop(perfDecode, "Decode Time: {0} ms"); if (result != null) { resultCallback(new MobileResult(result)); 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 (ScanningOptions.DisableAutofocus) { captureDevice.FocusMode = AVCaptureFocusMode.Locked; } else { 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); }
private void createPreview() { previewlayer = new AVCaptureVideoPreviewLayer (session); previewlayer.Frame = this.View.Bounds; this.cameraView = new UIView (); this.cameraView.Layer.AddSublayer (previewlayer); }
public override void ViewDidLoad() { base.ViewDidLoad(); this.View.BackgroundColor = UIColor.White; NSError error; // 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.GetDefaultDevice(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.SetSampleBufferDelegateQueue(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(); // 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(); }