private void PrepareBracketsWithCompletionHandler(Action <bool, NSError> completion)
{
switch (bracketModeControl.SelectedSegment)
{
case 0:
Console.WriteLine("Configuring auto-exposure brackets...");
bracketSettings = ExposureBrackets;
break;
case 1:
Console.WriteLine("Configuring duration/ISO brackets...");
bracketSettings = DurationISOBrackets;
break;
}
CMVideoDimensions dimesnions = captureDevice.ActiveFormat.HighResolutionStillImageDimensions;
var dimensions = new CGSize(dimesnions.Width, dimesnions.Height);
if (imageStripes != null)
{
imageStripes.Dispose();
}
imageStripes = new StripedImage(dimensions, (int)dimensions.Width / 12, (int)bracketSettings.Count);
Console.WriteLine("Warming brackets: {0}", bracketSettings.Count);
AVCaptureConnection connection = stillImageOutput.ConnectionFromMediaType(AVMediaType.Video);
stillImageOutput.PrepareToCaptureStillImageBracket(connection, bracketSettings.ToArray(), (success, error) => {
completion(success, error);
});
}
public override void VideoView(TVIVideoView view, CMVideoDimensions dimensions)
{
OnDimensionsDidChange(new DimensionsDidChangeEventArgs(view, dimensions));
}
public DimensionsDidChangeEventArgs(TVIVideoView view, CMVideoDimensions dimensions)
{
View = view;
Dimensions = dimensions;
}
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);
}
