protected void Initialize()
{
CaptureSession = new AVCaptureSession();
_previewLayer = new AVCaptureVideoPreviewLayer(CaptureSession)
{
Frame = Bounds,
VideoGravity = AVLayerVideoGravity.ResizeAspectFill
};
AVCaptureDeviceType[] captureDevices = { AVCaptureDeviceType.BuiltInWideAngleCamera };
var cameraPosition = (_cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
var videoDevices = AVCaptureDeviceDiscoverySession.Create(captureDevices, AVMediaType.Video, cameraPosition);
var device = videoDevices.Devices.FirstOrDefault();
if (device == null)
{
return;
}
var input = new AVCaptureDeviceInput(device, out NSError error);
CaptureSession.AddInput(input);
Layer.AddSublayer(_previewLayer);
CaptureSession.StartRunning();
IsPreviewing = true;
}
void UpdateCameraOption()
{
var devices = AVCaptureDeviceDiscoverySession.Create(
new AVCaptureDeviceType[] { AVCaptureDeviceType.BuiltInWideAngleCamera, AVCaptureDeviceType.BuiltInDualCamera },
AVMediaType.Video,
AVCaptureDevicePosition.Unspecified
);
var cameraPosition = (cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
var device = devices.Devices.FirstOrDefault(d => d.Position == cameraPosition);
if (device != null)
{
var lVideoDeviceInput = AVCaptureDeviceInput.FromDevice(device);
captureSession.BeginConfiguration();
// Remove the existing device input first, since using the front and back camera simultaneously is not supported.
captureSession.RemoveInput(videoDeviceInput);
if (captureSession.CanAddInput(lVideoDeviceInput))
{
captureSession.AddInput(lVideoDeviceInput);
videoDeviceInput = lVideoDeviceInput;
}
else
{
captureSession.AddInput(videoDeviceInput);
}
captureSession.CommitConfiguration();
}
}
//Function that discovers the device's back camera and returns an AVCaptureDevice object to
// ConfigureDeviceAndStart() where it is called below.
public AVCaptureDevice GetDevice()
{
var videoDeviceDiscoverySession = AVCaptureDeviceDiscoverySession.Create(new AVCaptureDeviceType[] { AVCaptureDeviceType.BuiltInWideAngleCamera }, AVMediaType.Video,
AVCaptureDevicePosition.Back);
return(videoDeviceDiscoverySession.Devices.FirstOrDefault());
}
void SetupVideoInput()
{
// Video Input
var videoDevices = AVCaptureDeviceDiscoverySession.Create(
new AVCaptureDeviceType[] { AVCaptureDeviceType.BuiltInWideAngleCamera, AVCaptureDeviceType.BuiltInDualCamera },
AVMediaType.Video,
AVCaptureDevicePosition.Unspecified
);
var cameraPosition = (cameraOptions == CameraOptions.Front) ? AVCaptureDevicePosition.Front : AVCaptureDevicePosition.Back;
var device = videoDevices.Devices.FirstOrDefault(d => d.Position == cameraPosition);
if (device == null)
{
return;
}
ConfigureCameraForDevice(device);
NSError error;
videoDeviceInput = new AVCaptureDeviceInput(device, out error);
captureSession.AddInput(videoDeviceInput);
}
public void SetupCamera()
{
var deviceDiscovery = AVCaptureDeviceDiscoverySession.Create(
new AVCaptureDeviceType[] { AVCaptureDeviceType.BuiltInWideAngleCamera }, AVMediaType.Video, AVCaptureDevicePosition.Back);
var device = deviceDiscovery.Devices.LastOrDefault();
if (device != null)
{
captureDevice = device;
BeginSession();
}
}
public static int UniqueDevicePositionsCount(this AVCaptureDeviceDiscoverySession session)
{
var uniqueDevicePositions = new List <AVCaptureDevicePosition>();
foreach (AVCaptureDevice device in session.Devices)
{
if (!uniqueDevicePositions.Contains(device.Position))
{
uniqueDevicePositions.Add(device.Position);
}
}
return(uniqueDevicePositions.Count);
}
public AVCamCameraView()
{
#region UIVIew adds
session = new AVCaptureSession();
VideoPreviewLayer = new AVCaptureVideoPreviewLayer(session)
{
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);
session.AddInput(input);
Layer.AddSublayer(VideoPreviewLayer);
//session.StartRunning();
IsPreviewing = true;
#endregion
// Create a device discovery session.
videoDeviceDiscoverySession = AVCaptureDeviceDiscoverySession.Create(
new AVCaptureDeviceType[] { AVCaptureDeviceType.BuiltInWideAngleCamera, AVCaptureDeviceType.BuiltInDualCamera },
AVMediaType.Video,
AVCaptureDevicePosition.Unspecified
);
// Communicate with the session and other session objects on this queue.
sessionQueue = new DispatchQueue("session queue", false);
setupResult = AVCamSetupResult.Success;
}
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();
}
}
static int UniqueDevicePositionsCount (AVCaptureDeviceDiscoverySession session)
{
var uniqueDevicePositions = new List<AVCaptureDevicePosition> ();
foreach (var device in session.Devices) {
if (!uniqueDevicePositions.Contains (device.Position))
uniqueDevicePositions.Add (device.Position);
}
return uniqueDevicePositions.Count;
}
protected virtual void SetupAVCapture()
{
AVCaptureDeviceInput deviceInput;
// Select a video device, make an input
var videoDevice = AVCaptureDeviceDiscoverySession.Create(
new AVCaptureDeviceType[] { AVCaptureDeviceType.BuiltInWideAngleCamera },
AVMediaType.Video,
AVCaptureDevicePosition.Back
).Devices.FirstOrDefault();
deviceInput = new AVCaptureDeviceInput(videoDevice, out NSError error);
if (error != null)
{
Console.WriteLine($"Could not create video device input: {error.LocalizedDescription}");
return;
}
session.BeginConfiguration();
session.SessionPreset = AVCaptureSession.Preset640x480; // Model image size is smaller
// Add a video input
if (!session.CanAddInput(deviceInput))
{
Console.WriteLine("Could not add video device input to the session");
session.CommitConfiguration();
return;
}
session.AddInput(deviceInput);
if (session.CanAddOutput(videoDataOutput))
{
session.AddOutput(videoDataOutput);
// Add a video data ouptut
videoDataOutput.AlwaysDiscardsLateVideoFrames = true;
videoDataOutput.WeakVideoSettings = new NSDictionary(CVPixelBuffer.PixelFormatTypeKey, CVPixelFormatType.CV420YpCbCr8BiPlanarFullRange);
videoDataOutput.SetSampleBufferDelegateQueue(this, videoDataOutputQueue);
}
else
{
Console.WriteLine("Could not add video data output to the session");
session.CommitConfiguration();
return;
}
var captureConnection = videoDataOutput.ConnectionFromMediaType(AVMediaType.Video);
// Always process the frames
captureConnection.Enabled = true;
videoDevice.LockForConfiguration(out NSError error2);
if (error2 == null)
{
var formatDescription = videoDevice.ActiveFormat.FormatDescription as CMVideoFormatDescription;
CMVideoDimensions dimensions = formatDescription.Dimensions;
bufferSize.Width = dimensions.Width;
bufferSize.Height = dimensions.Height;
videoDevice.UnlockForConfiguration();
}
else
{
Console.WriteLine($"{error2.LocalizedDescription}");
}
session.CommitConfiguration();
previewLayer = AVCaptureVideoPreviewLayer.FromSession(session);
previewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill;
rootLayer = previewView.Layer;
previewLayer.Frame = rootLayer.Bounds;
rootLayer.AddSublayer(previewLayer);
}
