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();
}
}
