/// <summary>
/// Renders current image with applied filters to a buffer and returns it.
/// Meant to be used where the filtered image is for example going to be
/// saved to a file.
/// </summary>
/// <returns>Buffer containing the filtered image data</returns>
public async Task<IBuffer> RenderFullBufferAsync()
{
IBuffer buffer;
try
{
buffer = await _session.RenderToJpegAsync();
}
catch (Exception ex)
{
buffer = null;
}
return buffer;
}
//extract Oriented ROI
public IBuffer GenerateOrientedROIPicture()
{
session.UndoAll();
var currentSize = new Size(
outputSize.Width / currentScale,
outputSize.Height / currentScale);
var corner = new Point(currentPos.X - currentSize.Width / 2, currentPos.Y - currentSize.Height / 2);
session.AddFilter(CreateOrientedROIFilter(new Rect(corner, currentSize), currentAngle));
var task = session.RenderToJpegAsync().AsTask();
task.Wait();
return(task.Result);
}
private async System.Threading.Tasks.Task Capture()
{
try
{
await camera.FocusAsync();
MemoryStream imageStream = new MemoryStream();
imageStream.Seek(0, SeekOrigin.Begin);
CameraCaptureSequence sequence = camera.CreateCaptureSequence(1);
sequence.Frames[0].CaptureStream = imageStream.AsOutputStream();
await camera.PrepareCaptureSequenceAsync(sequence);
await sequence.StartCaptureAsync();
camera.SetProperty(
KnownCameraPhotoProperties.LockedAutoFocusParameters,
AutoFocusParameters.None);
MediaLibrary library = new MediaLibrary();
EditingSession session = new EditingSession(imageStream.GetWindowsRuntimeBuffer());
using (session)
{
session.AddFilter(FilterFactory.CreateSketchFilter(SketchMode.Gray));
IBuffer data = await session.RenderToJpegAsync();
library.SavePictureToCameraRoll(FileNamePrefix
+ DateTime.Now.ToString() + ".jpg",
data.AsStream());
}
}
catch (Exception ex)
{
Debug.WriteLine("Failed to save the image to camera roll: " + ex.ToString());
}
}
