public static async Task <Tuple <ImageSource, ImageSource> > GetImageAndBlurredCopyFromPixelDataAsync([NotNull] IBuffer buffer, int blur)
{
// Check if the input is valid
if (buffer.Length == 0)
{
return(null);
}
// Apply the blur effect on a copy of the original image
using (Stream imageStream = buffer.AsStream())
using (IRandomAccessStream randomImageStream = imageStream.AsRandomAccessStream())
{
// Load the default image
BitmapImage original = new BitmapImage();
await original.SetSourceAsync(randomImageStream);
// Blur the copy of the image
randomImageStream.Seek(0);
using (RandomAccessStreamImageSource imageProvider = new RandomAccessStreamImageSource(randomImageStream))
using (BlurEffect blurEffect = new BlurEffect(imageProvider)
{
KernelSize = blur
})
{
// Process the blurred image
WriteableBitmap blurred = new WriteableBitmap((int)original.PixelWidth, (int)original.PixelHeight);
await blurEffect.GetBitmapAsync(blurred, OutputOption.Stretch);
// Return the two images
return(Tuple.Create <ImageSource, ImageSource>(original, blurred));
}
}
}
public static async Task <ImageSource> BlurImageAsync([NotNull] IBuffer buffer, int blur)
{
using (Stream imageStream = buffer.AsStream())
using (IRandomAccessStream randomImageStream = imageStream.AsRandomAccessStream())
{
BitmapDecoder decoder;
try
{
decoder = await BitmapDecoder.CreateAsync(randomImageStream);
}
catch
{
// Invalid image data
return(null);
}
randomImageStream.Seek(0);
using (RandomAccessStreamImageSource imageProvider = new RandomAccessStreamImageSource(randomImageStream))
using (BlurEffect blurEffect = new BlurEffect(imageProvider)
{
KernelSize = blur
})
{
WriteableBitmap blurred = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
return(await blurEffect.GetBitmapAsync(blurred, OutputOption.Stretch));
}
}
}
