public bool RestartReading()
{
var result = false;
this.assetReader = AVAssetReader.FromAsset(this.videoAsset, out NSError error);
if (error == null)
{
var settings = new AVVideoSettingsUncompressed {
PixelFormatType = CVPixelFormatType.CV420YpCbCr8BiPlanarFullRange
};
this.videoAssetReaderOutput = new AVAssetReaderTrackOutput(this.videoTrack, settings);
if (this.videoAssetReaderOutput != null)
{
this.videoAssetReaderOutput.AlwaysCopiesSampleData = true;
if (this.assetReader.CanAddOutput(this.videoAssetReaderOutput))
{
this.assetReader.AddOutput(this.videoAssetReaderOutput);
result = this.assetReader.StartReading();
}
}
}
else
{
Console.WriteLine($"Failed to create AVAssetReader object: {error}");
}
return(result);
}
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);
if (captureDevice == null)
{
Image <Bgr, Byte> img = new Image <Bgr, byte> (512, 512, new Bgr(255, 255, 255));
CvInvoke.PutText(
img,
"Capture device not found.",
new Point(10, 200),
FontFace.HersheyComplex,
1,
new MCvScalar(),
2);
ImageView.Image = img.ToUIImage();
return(false);
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
Console.WriteLine("No input device");
return(false);
}
session.AddInput(input);
// create a VideoDataOutput and add it to the sesion
AVVideoSettingsUncompressed settingUncomp = new AVVideoSettingsUncompressed();
settingUncomp.PixelFormatType = CVPixelFormatType.CV32BGRA;
var output = new AVCaptureVideoDataOutput()
{
UncompressedVideoSetting = settingUncomp,
// If you want to cap the frame rate at a given speed, in this sample: 15 frames per second
//MinFrameDuration = new CMTime (1, 15)
};
// configure the output
queue = new DispatchQueue("myQueue");
outputRecorder = new OutputRecorder(ImageView);
output.SetSampleBufferDelegateQueue(outputRecorder, queue);
session.AddOutput(output);
session.StartRunning();
return(true);
}
public void ConfigureDeviceAndStart()
{
var device = GetDevice();
if (device == null)
{
return;
}
try
{
if (device.LockForConfiguration(out var error))
{
if (device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
}
device.UnlockForConfiguration();
}
// Configure Input
var input = AVCaptureDeviceInput.FromDevice(device, out var error2);
_captureSession.AddInput(input);
// Configure Output
var settings = new AVVideoSettingsUncompressed()
{
PixelFormatType = CoreVideo.CVPixelFormatType.CV32BGRA
};
var videoOutput = new AVCaptureVideoDataOutput
{
WeakVideoSettings = settings.Dictionary,
AlwaysDiscardsLateVideoFrames = true
};
var videoCaptureQueue = new DispatchQueue("Video Queue");
videoOutput.SetSampleBufferDelegateQueue(new OutputRecorder(View, _shapeLayer), videoCaptureQueue);
if (_captureSession.CanAddOutput(videoOutput))
{
_captureSession.AddOutput(videoOutput);
}
// Start session
_captureSession.StartRunning();
}
catch (Exception e)
{
Console.Write(e);
}
}
private void 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);
if (captureDevice == null)
{
RenderImageMessage("Capture device not found.");
return;
}
var input = AVCaptureDeviceInput.FromDevice(captureDevice);
if (input == null)
{
RenderImageMessage("No input device");
return;
}
session.AddInput(input);
// create a VideoDataOutput and add it to the sesion
AVVideoSettingsUncompressed settingUncomp = new AVVideoSettingsUncompressed();
settingUncomp.PixelFormatType = CVPixelFormatType.CV32BGRA;
var output = new AVCaptureVideoDataOutput()
{
UncompressedVideoSetting = settingUncomp,
// If you want to cap the frame rate at a given speed, in this sample: 15 frames per second
//MinFrameDuration = new CMTime (1, 15)
};
// configure the output
queue = new DispatchQueue("myQueue");
outputRecorder = new OutputRecorder(ImageView);
output.SetSampleBufferDelegateQueue(outputRecorder, queue);
session.AddOutput(output);
session.StartRunning();
}
void SetupVideoCapture()
{
var settings = new AVVideoSettingsUncompressed();
settings.PixelFormatType = CVPixelFormatType.CV32BGRA;
videoCaptureDelegate = new XCameraVideoOutputDelegate(FrameCapturedHandler);
queue = new DispatchQueue("XCamera.CameraQueue");
videoOutput = new AVCaptureVideoDataOutput();
videoOutput.UncompressedVideoSetting = settings;
videoOutput.AlwaysDiscardsLateVideoFrames = true;
videoOutput.SetSampleBufferDelegateQueue(videoCaptureDelegate, queue);
}
/// <summary>
/// Creates a camera stream and adds it to the view
/// </summary>
private async Task SetupLiveCameraStream()
{
captureSession = new AVCaptureSession();
// SETUP THE PREVIEW OF THE CAPTURE SESSION
videoPreviewLayer = new AVCaptureVideoPreviewLayer(captureSession)
{
Frame = this.Frame
};
this.Layer.AddSublayer(videoPreviewLayer);
// SETUP THE INPUT DEVICE FOR THE SESSION
var captureDevice = AVCaptureDevice.GetDefaultDevice(AVMediaType.Video);
ConfigureCameraForDevice(captureDevice);
captureDeviceInput = AVCaptureDeviceInput.FromDevice(captureDevice);
captureSession.AddInput(captureDeviceInput);
// VIDEO OUTPUT BUFFERING METHOD
var output = new AVCaptureVideoDataOutput();
var settings = new AVVideoSettingsUncompressed
{
PixelFormatType = CVPixelFormatType.CV32BGRA
};
output.WeakVideoSettings = settings.Dictionary;
Queue = new DispatchQueue("ManCamQueue");
Recorder = new OutputRecorder(this, VideoFrameInterval);
Recorder.OnFrameRecieved += HandleVideFrameImage;
output.SetSampleBufferDelegate(Recorder, Queue);
captureSession.AddOutput(output);
// UI PREPERATION
AddTargetOverlay();
textOutputLabel = new UILabel(new CGRect(targetOverlayView.Frame.Width + 10, 10, 100, 100))
{
TextColor = UIColor.White,
Font = UIFont.BoldSystemFontOfSize(22)
};
this.AddSubview(textOutputLabel);
captureSession.StartRunning();
}
void SetupAssetReaserWriterForVideo(AVAssetTrack videoTrack)
{
if (videoTrack == null)
{
return;
}
// Decompress to ARGB with the asset reader
var decompSettings = new AVVideoSettingsUncompressed {
PixelFormatType = CVPixelFormatType.CV32BGRA,
AllocateWithIOSurface = null
};
AVAssetReaderOutput output = new AVAssetReaderTrackOutput(videoTrack, decompSettings);
assetReader.AddOutput(output);
// Get the format description of the track, to fill in attributes of the video stream that we don't want to change
var formatDescription = (CMVideoFormatDescription)videoTrack.FormatDescriptions.FirstOrDefault();
// Grab track dimensions from format description
CGSize trackDimensions = formatDescription != null
? formatDescription.GetPresentationDimensions(false, false)
: videoTrack.NaturalSize;
// Grab clean aperture, pixel aspect ratio from format description
AVVideoCodecSettings compressionSettings = null;
if (formatDescription != null)
{
var cleanApertureDescr = (NSDictionary)formatDescription.GetExtension(CVImageBuffer.CleanApertureKey);
var pixelAspectRatioDescr = (NSDictionary)formatDescription.GetExtension(CVImageBuffer.PixelAspectRatioKey);
compressionSettings = CreateCodecSettingsFor(cleanApertureDescr, pixelAspectRatioDescr);
}
// Compress to H.264 with the asset writer
var videoSettings = new AVVideoSettingsCompressed {
Codec = AVVideoCodec.H264,
Width = (int)trackDimensions.Width,
Height = (int)trackDimensions.Height,
CodecSettings = compressionSettings
};
AVAssetWriterInput input = new AVAssetWriterInput(videoTrack.MediaType, videoSettings);
input.Transform = videoTrack.PreferredTransform;
assetWriter.AddInput(input);
// Create and save an instance of ReadWriteSampleBufferChannel,
// which will coordinate the work of reading and writing sample buffers
videoSampleBufferChannel = new VideoChannel(output, input, transformer);
}
void ConfigureAVCaptureSession()
{
session = new AVCaptureSession();
session.SessionPreset = sessionPreset;
var device = AVCaptureDevice.GetDefaultDevice(AVMediaType.Video);
try
{
var input = new AVCaptureDeviceInput(device, out var error);
if (error != null)
{
throw new Exception(error.LocalizedDescription);
}
session.AddInput(input);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
var videoDataOutput = new AVCaptureVideoDataOutput();
var videoDataOutputQueue = new DispatchQueue("videodataqueue", false);
videoDataOutput.SetSampleBufferDelegateQueue(this, videoDataOutputQueue);
var settings = new AVVideoSettingsUncompressed()
{
PixelFormatType = CVPixelFormatType.CV32BGRA
};
videoDataOutput.WeakVideoSettings = settings.Dictionary;
session.AddOutput(videoDataOutput);
var connection = videoDataOutput.ConnectionFromMediaType(AVMediaType.Video);
connection.Enabled = true;
}
private CameraPreview DispatchOpenWithPreviewAsync(Size previewRequestSize)
{
_session.BeginConfiguration();
var videoOutput = new AVCaptureVideoDataOutput();
var settings = new AVVideoSettingsUncompressed {
PixelFormatType = CVPixelFormatType.CV32BGRA
};
videoOutput.UncompressedVideoSetting = settings;
videoOutput.WeakVideoSettings = settings.Dictionary;
videoOutput.AlwaysDiscardsLateVideoFrames = true;
var preview = new CameraPreview(previewRequestSize, new System.Drawing.Size(720, 1280));
videoOutput.SetSampleBufferDelegateQueue(preview, new DispatchQueue("sample buffer"));
_session.AddOutput(videoOutput);
var videoConnection = videoOutput.ConnectionFromMediaType(AVMediaType.Video);
videoConnection.VideoOrientation = AVCaptureVideoOrientation.Portrait;
videoConnection.VideoMirrored = true;
_photoOutput = new AVCapturePhotoOutput
{
IsHighResolutionCaptureEnabled = true
};
_photoOutput.SetPreparedPhotoSettingsAsync(new[] { CreatePhotoSettings() });
_session.SessionPreset = AVCaptureSession.Preset1280x720;
_session.AddOutput(_photoOutput);
_session.CommitConfiguration();
_session.StartRunning();
_isRunning = true;
return(preview);
}
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);
if (captureDevice == null) {
Image<Bgr, Byte> img = new Image<Bgr, byte> (512, 512, new Bgr (255, 255, 255));
CvInvoke.PutText (
img,
"Capture device not found.",
new Point (10, 200),
FontFace.HersheyComplex,
1,
new MCvScalar (),
2);
ImageView.Image = img.ToUIImage();
return false;
}
var input = AVCaptureDeviceInput.FromDevice (captureDevice);
if (input == null){
Console.WriteLine ("No input device");
return false;
}
session.AddInput (input);
// create a VideoDataOutput and add it to the sesion
AVVideoSettingsUncompressed settingUncomp = new AVVideoSettingsUncompressed();
settingUncomp.PixelFormatType = CVPixelFormatType.CV32BGRA;
var output = new AVCaptureVideoDataOutput () {
UncompressedVideoSetting = settingUncomp,
// If you want to cap the frame rate at a given speed, in this sample: 15 frames per second
//MinFrameDuration = new CMTime (1, 15)
};
// configure the output
queue = new DispatchQueue ("myQueue");
outputRecorder = new OutputRecorder (ImageView);
output.SetSampleBufferDelegateQueue(outputRecorder, queue);
session.AddOutput (output);
session.StartRunning ();
return true;
}
public override void FinishedLaunching(UIApplication application)
{
//Create a new capture session
Session = new AVCaptureSession();
Session.SessionPreset = AVCaptureSession.PresetMedium;
//create a device input
CaptureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (CaptureDevice == null)
{
//Video capture not supported, abort camera operation
if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad)
{
errorCamera("No Camera detected", "Seems your " + UIDevice.CurrentDevice.UserInterfaceIdiom + " has no camera. You must have a camera installed to use this feature");
CameraAvailable = false;
return;
}
else if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone)
{
errorCamera("No Camera detected", "Seems your " + UIDevice.CurrentDevice.UserInterfaceIdiom + " has no camera. You must have a camera installed to use this feature");
CameraAvailable = false;
return;
}
}
else
{
CaptureDevice.LockForConfiguration(out Error);
if (Error != null)
{
Console.WriteLine("Error detected in camera configuration: {0} ", Error.LocalizedDescription);
CaptureDevice.UnlockForConfiguration();
return;
}
else
{
//configure a stream for 40 frames per second fps
CaptureDevice.ActiveVideoMinFrameDuration = new CMTime(1, 40);
//unlock configuration
CaptureDevice.UnlockForConfiguration();
//get input from capture device
Input = AVCaptureDeviceInput.FromDevice(CaptureDevice);
if (Input == null)
{
switch (UIDevice.CurrentDevice.UserInterfaceIdiom)
{
case UIUserInterfaceIdiom.Pad:
errorCamera("No Input", "No input detected from the camera on your: " + UIUserInterfaceIdiom.Pad);
CameraAvailable = false;
return;
break;
case UIUserInterfaceIdiom.Phone:
errorCamera("No Input", "No input detected from the camera on your: " + UIUserInterfaceIdiom.Phone);
CameraAvailable = false;
return;
break;
}
}
else
{
//attach input to session
Session.AddInput(Input);
//create a new output
var output = new AVCaptureVideoDataOutput();
var settings = new AVVideoSettingsUncompressed();
settings.PixelFormatType = CVPixelFormatType.CV32BGRA;
output.WeakVideoSettings = settings.Dictionary;
//configure and attach to the output to the session
Queue = new DispatchQueue("ManCamQueue");
Recorder = new OutputRecorder();
output.SetSampleBufferDelegate(Recorder, Queue);
Session.AddOutput(output);
CameraAvailable = true;
}
}
}
}
public override void FinishedLaunching(UIApplication application)
{
// Create a new capture session
Session = new AVCaptureSession();
Session.SessionPreset = AVCaptureSession.PresetMedium;
// Create a device input
CaptureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (CaptureDevice == null)
{
// Video capture not supported, abort
Console.WriteLine("Video recording not supported on this device");
CameraAvailable = false;
return;
}
// Prepare device for configuration
CaptureDevice.LockForConfiguration(out Error);
if (Error != null)
{
// There has been an issue, abort
Console.WriteLine("Error: {0}", Error.LocalizedDescription);
CaptureDevice.UnlockForConfiguration();
return;
}
// Configure stream for 15 frames per second (fps)
CaptureDevice.ActiveVideoMinFrameDuration = new CMTime(1, 15);
// Unlock configuration
CaptureDevice.UnlockForConfiguration();
// Get input from capture device
Input = AVCaptureDeviceInput.FromDevice(CaptureDevice);
if (Input == null)
{
// Error, report and abort
Console.WriteLine("Unable to gain input from capture device.");
CameraAvailable = false;
return;
}
// Attach input to session
Session.AddInput(Input);
// Create a new output
var output = new AVCaptureVideoDataOutput();
var settings = new AVVideoSettingsUncompressed();
settings.PixelFormatType = CVPixelFormatType.CV32BGRA;
output.WeakVideoSettings = settings.Dictionary;
// Configure and attach to the output to the session
Queue = new DispatchQueue("ManCamQueue");
Recorder = new OutputRecorder();
output.SetSampleBufferDelegate(Recorder, Queue);
Session.AddOutput(output);
// Configure and attach a still image output for bracketed capture
StillImageOutput = new AVCaptureStillImageOutput();
var dict = new NSMutableDictionary();
dict[AVVideo.CodecKey] = new NSNumber((int)AVVideoCodec.JPEG);
Session.AddOutput(StillImageOutput);
// Let tabs know that a camera is available
CameraAvailable = true;
}
private void Initialize()
{
//Pinchジェスチャ登録
SetPinchGesture();
//デバイス設定
var videoDevices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);
var cameraPosition = (cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
MainDevice = videoDevices.FirstOrDefault(d => d.Position == cameraPosition);
NSError device_error;
MainDevice.LockForConfiguration(out device_error);
if (device_error != null)
{
Console.WriteLine($"Error: {device_error.LocalizedDescription}");
MainDevice.UnlockForConfiguration();
return;
}
//フレームレート設定
MainDevice.ActiveVideoMinFrameDuration = new CMTime(1, 24);
MainDevice.UnlockForConfiguration();
if (MainDevice == null)
{
return;
}
//max zoom
MaxZoom = (float)Math.Min(MainDevice.ActiveFormat.VideoMaxZoomFactor, 6);
//入力設定
NSError error;
Input = new AVCaptureDeviceInput(MainDevice, out error);
CaptureSession.AddInput(Input);
//出力設定
Output = new AVCaptureVideoDataOutput();
//フレーム処理用
Queue = new DispatchQueue("myQueue");
Output.AlwaysDiscardsLateVideoFrames = true;
Recorder = new OutputRecorder()
{
Camera = Camera
};
Output.SetSampleBufferDelegate(Recorder, Queue);
var vSettings = new AVVideoSettingsUncompressed();
vSettings.PixelFormatType = CVPixelFormatType.CV32BGRA;
Output.WeakVideoSettings = vSettings.Dictionary;
CaptureSession.AddOutput(Output);
if (IsPreviewing)
{
CaptureSession.StartRunning();
}
}
public override void FinishedLaunching(UIApplication application)
{
// Create a new capture session
Session = new AVCaptureSession ();
Session.SessionPreset = AVCaptureSession.PresetMedium;
// Create a device input
CaptureDevice = GetFrontCamera();
if (CaptureDevice == null) {
// Video capture not supported, abort
Console.WriteLine ("Video recording not supported on this device");
CameraAvailable = false;
return;
}
// Prepare device for configuration
CaptureDevice.LockForConfiguration (out Error);
if (Error != null) {
// There has been an issue, abort
Console.WriteLine ("Error: {0}", Error.LocalizedDescription);
CaptureDevice.UnlockForConfiguration ();
return;
}
// Configure stream for 15 frames per second (fps)
CaptureDevice.ActiveVideoMinFrameDuration = new CMTime (1, 15);
// Unlock configuration
CaptureDevice.UnlockForConfiguration ();
// Get input from capture device
Input = AVCaptureDeviceInput.FromDevice (CaptureDevice);
if (Input == null) {
// Error, report and abort
Console.WriteLine ("Unable to gain input from capture device.");
CameraAvailable = false;
return;
}
// Attach input to session
Session.AddInput (Input);
// Create a new output
var output = new AVCaptureVideoDataOutput ();
var settings = new AVVideoSettingsUncompressed ();
settings.PixelFormatType = CVPixelFormatType.CV32BGRA;
output.WeakVideoSettings = settings.Dictionary;
// Configure and attach to the output to the session
Queue = new DispatchQueue ("ManCamQueue");
Recorder = new OutputRecorder ();
output.SetSampleBufferDelegate (Recorder, Queue);
Session.AddOutput (output);
// Configure and attach a still image output for bracketed capture
StillImageOutput = new AVCaptureStillImageOutput ();
var dict = new NSMutableDictionary();
dict[AVVideo.CodecKey] = new NSNumber((int) AVVideoCodec.JPEG);
Session.AddOutput (StillImageOutput);
// Let tabs know that a camera is available
CameraAvailable = true;
}
private void SetupCamera(bool restart = false)
{
try
{
if (_captureSession == null || restart)
{
_captureSession = new AVCaptureSession
{
SessionPreset = AVCaptureSession.PresetPhoto
};
if (!_cameraModule.AvailableCameras.Any())
{
var deviceTypes = new List <AVCaptureDeviceType>
{
AVCaptureDeviceType.BuiltInWideAngleCamera,
AVCaptureDeviceType.BuiltInTelephotoCamera
};
if (UIDevice.CurrentDevice.CheckSystemVersion(13, 0))
{
deviceTypes.Add(AVCaptureDeviceType.BuiltInUltraWideCamera);
}
var session = AVCaptureDeviceDiscoverySession.Create(
deviceTypes.ToArray(), AVMediaType.Video, AVCaptureDevicePosition.Unspecified);
_devices = session.Devices;
foreach (var avCaptureDevice in _devices)
{
_cameraModule.AvailableCameras.Add(new AvailableCamera
{
DisplayName = avCaptureDevice.LocalizedName,
CameraId = avCaptureDevice.UniqueID,
IsFront = avCaptureDevice.Position == AVCaptureDevicePosition.Front
});
}
}
}
SetPreviewOrientation();
if (_device == null)
{
_device = AVCaptureDevice.GetDefaultDevice(AVMediaTypes.Video);
_cameraModule.ChosenCamera = _cameraModule.AvailableCameras.First(c => c.CameraId == _device.UniqueID);
}
else
{
_device = AVCaptureDevice.DeviceWithUniqueID(_cameraModule.ChosenCamera.CameraId);
}
SetPreviewSizing(_device, restart);
TurnOffFlashAndSetContinuousAutoMode(_device);
_is10OrHigher = UIDevice.CurrentDevice.CheckSystemVersion(10, 0);
var isRestart = false;
if (_is10OrHigher && (_photoOutput == null || restart))
{
_photoOutput = new AVCapturePhotoOutput
{
IsHighResolutionCaptureEnabled = true
};
_captureSession.AddOutput(_photoOutput);
isRestart = true;
}
else if (!_is10OrHigher && (_stillImageOutput == null || restart))
{
_stillImageOutput = new AVCaptureStillImageOutput
{
OutputSettings = new NSDictionary(),
HighResolutionStillImageOutputEnabled = true
};
_captureSession.AddOutput(_stillImageOutput);
isRestart = true;
}
if (isRestart)
{
var settings = new AVVideoSettingsUncompressed
{
PixelFormatType = CVPixelFormatType.CV32BGRA
};
_previewFrameOutput = new AVCaptureVideoDataOutput
{
AlwaysDiscardsLateVideoFrames = true,
MinFrameDuration = new CMTime(1, 30),
UncompressedVideoSetting = settings
};
//if (UIDevice.CurrentDevice.CheckSystemVersion(13, 0)) //TODO: what is this?
//{
// _previewFrameOutput.DeliversPreviewSizedOutputBuffers = true;
// _previewFrameOutput.AutomaticallyConfiguresOutputBufferDimensions = false;
//}
_previewFrameDelegate = new PreviewFrameDelegate(_cameraModule);
var queue = new DispatchQueue("PreviewFrameQueue");
_previewFrameOutput.WeakVideoSettings = settings.Dictionary;
_previewFrameOutput.SetSampleBufferDelegate(_previewFrameDelegate, queue);
_captureSession.AddOutput(_previewFrameOutput);
_captureSession.AddInput(AVCaptureDeviceInput.FromDevice(_device));
}
_device.AddObserver(this, "adjustingFocus", NSKeyValueObservingOptions.OldNew, IntPtr.Zero);
}
catch (Exception e)
{
_cameraModule.ErrorMessage = e.ToString();
}
}
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
// create a new window instance based on the screen size
Window = new UIWindow(UIScreen.MainScreen.Bounds);
Microsoft.WindowsAzure.MobileServices.CurrentPlatform.Init();
// If you have defined a root view controller, set it here:
initialViewController = Storyboard.InstantiateInitialViewController() as UIViewController;
Window.RootViewController = initialViewController;
UITabBar.Appearance.SelectedImageTintColor = UIColor.FromRGB(14, 125, 202);
UITabBar.Appearance.BackgroundColor = UIColor.White;
// make the window visible
Window.MakeKeyAndVisible();
// Create a new capture session
Session = new AVCaptureSession();
Session.SessionPreset = AVCaptureSession.PresetMedium;
// Create a device input
CaptureDevice = AVCaptureDevice.DefaultDeviceWithMediaType(AVMediaType.Video);
if (CaptureDevice == null)
{
//throw new Exception("Video recording not supported on this device");
}
else
{
// Prepare device for configuration
if (!CaptureDevice.LockForConfiguration(out Error))
{
// There has been an issue, abort
Console.WriteLine("Error: {0}", Error.LocalizedDescription);
CaptureDevice.UnlockForConfiguration();
return(false);
}
// Configure stream for 15 frames per second (fps)
CaptureDevice.ActiveVideoMinFrameDuration = new CMTime(1, 15);
// Unlock configuration
CaptureDevice.UnlockForConfiguration();
// Get input from capture device
Input = AVCaptureDeviceInput.FromDevice(CaptureDevice);
if (Input == null)
{
// Error, report and abort
Console.WriteLine("Unable to gain input from capture device.");
CameraAvailable = false;
return(false);
}
// Attach input to session
Session.AddInput(Input);
// Create a new output
var output = new AVCaptureVideoDataOutput();
var settings = new AVVideoSettingsUncompressed();
settings.PixelFormatType = CVPixelFormatType.CV32BGRA;
output.WeakVideoSettings = settings.Dictionary;
// Configure and attach to the output to the session
Queue = new DispatchQueue("ManCamQueue");
Recorder = new OutputRecorder();
output.SetSampleBufferDelegate(Recorder, Queue);
Session.AddOutput(output);
// Configure and attach a still image output for bracketed capture
StillImageOutput = new AVCaptureStillImageOutput();
var dict = new NSMutableDictionary();
dict[AVVideo.CodecKey] = new NSNumber((int)AVVideoCodec.JPEG);
Session.AddOutput(StillImageOutput);
// Let tabs know that a camera is available
CameraAvailable = true;
}
return(true);
}
void SetupAssetReaserWriterForVideo (AVAssetTrack videoTrack)
{
if (videoTrack == null)
return;
// Decompress to ARGB with the asset reader
var decompSettings = new AVVideoSettingsUncompressed {
PixelFormatType = CVPixelFormatType.CV32BGRA,
AllocateWithIOSurface = null
};
AVAssetReaderOutput output = new AVAssetReaderTrackOutput (videoTrack, decompSettings);
assetReader.AddOutput (output);
// Get the format description of the track, to fill in attributes of the video stream that we don't want to change
var formatDescription = (CMVideoFormatDescription)videoTrack.FormatDescriptions.FirstOrDefault ();
// Grab track dimensions from format description
CGSize trackDimensions = formatDescription != null
? formatDescription.GetPresentationDimensions (false, false)
: videoTrack.NaturalSize;
// Grab clean aperture, pixel aspect ratio from format description
AVVideoCodecSettings compressionSettings = null;
if (formatDescription != null) {
var cleanApertureDescr = (NSDictionary)formatDescription.GetExtension (CVImageBuffer.CleanApertureKey);
var pixelAspectRatioDescr = (NSDictionary)formatDescription.GetExtension (CVImageBuffer.PixelAspectRatioKey);
compressionSettings = CreateCodecSettingsFor (cleanApertureDescr, pixelAspectRatioDescr);
}
// Compress to H.264 with the asset writer
var videoSettings = new AVVideoSettingsCompressed {
Codec = AVVideoCodec.H264,
Width = (int)trackDimensions.Width,
Height = (int)trackDimensions.Height,
CodecSettings = compressionSettings
};
AVAssetWriterInput input = new AVAssetWriterInput (videoTrack.MediaType, videoSettings);
input.Transform = videoTrack.PreferredTransform;
assetWriter.AddInput (input);
// Create and save an instance of ReadWriteSampleBufferChannel,
// which will coordinate the work of reading and writing sample buffers
videoSampleBufferChannel = new VideoChannel (output, input, transformer);
}