/// <summary>
/// Handles a frame arrived event and renders the frame to the screen.
/// </summary>
private void ColorFrameReader_FrameArrivedAsync(MediaFrameReader sender, MediaFrameArrivedEventArgs args)
{
var frame = sender.TryAcquireLatestFrame();
if (frame != null)
{
SoftwareBitmap originalBitmap = null;
var inputBitmap = frame.VideoMediaFrame?.SoftwareBitmap;
if (inputBitmap != null)
{
// The XAML Image control can only display images in BRGA8 format with premultiplied or no alpha
// The frame reader as configured in this sample gives BGRA8 with straight alpha, so need to convert it
originalBitmap = SoftwareBitmap.Convert(inputBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied);
SoftwareBitmap outputBitmap = new SoftwareBitmap(BitmapPixelFormat.Bgra8, originalBitmap.PixelWidth, originalBitmap.PixelHeight, BitmapAlphaMode.Premultiplied);
// Operate on the image in the manner chosen by the user.
if (currentOperation == OperationType.Blur)
{
operation.Blur(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.HoughLines)
{
operation.HoughLines(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.Contours)
{
operation.Contours(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.Canny)
{
operation.Canny(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.MotionDetector)
{
operation.MotionDetector(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.Histogram)
{
#if USEOCVHERLPER
App.CvHelper.Histogram(originalBitmap, outputBitmap);
#else
// MP! Todo: Implement C# version in OcvOp.
#endif
}
// Display both the original bitmap and the processed bitmap.
previewRenderer.RenderFrame(originalBitmap);
outputRenderer.RenderFrame(outputBitmap);
}
Interlocked.Increment(ref frameCount);
}
}
/// <summary>
/// Handles a frame arrived event and renders the frame to the screen.
/// </summary>
private async Task ProcessWithOpenCV(VideoFrame frame)
{
if (frame != null)
{
SoftwareBitmap originalBitmap = null;
var inputBitmap = frame.SoftwareBitmap;
if (inputBitmap != null)
{
try
{
// The XAML Image control can only display images in BRGA8 format with premultiplied or no alpha
// The frame reader as configured in this sample gives BGRA8 with straight alpha, so need to convert it
originalBitmap = SoftwareBitmap.Convert(inputBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied);
SoftwareBitmap outputBitmap = new SoftwareBitmap(BitmapPixelFormat.Bgra8, originalBitmap.PixelWidth, originalBitmap.PixelHeight, BitmapAlphaMode.Premultiplied);
// Operate on the image in the manner chosen by the user.
if (currentOperation == OperationType.Blur)
{
operation.Blur(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.HoughLines)
{
operation.HoughLines(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.Contours)
{
operation.Contours(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.Canny)
{
operation.Canny(originalBitmap, outputBitmap, storeditem);
}
else if (currentOperation == OperationType.MotionDetector)
{
}
// Display both the original bitmap and the processed bitmap.
previewRenderer.RenderFrame(originalBitmap);
outputRenderer.RenderFrame(outputBitmap);
}
catch (Exception ex)
{
await(new MessageDialog(ex.Message)).ShowAsync();
}
}
Interlocked.Increment(ref frameCount);
}
}