public async static Task <WriteableBitmap> ToBitmapImageAsync(this byte[] imageBytes, Tuple <int, int> downscale, InterpolationMode mode)
{
if (imageBytes == null)
{
return(null);
}
IRandomAccessStream image = imageBytes.AsBuffer().AsStream().AsRandomAccessStream();
if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
{
image = await image.ResizeImage((uint)downscale.Item1, (uint)downscale.Item2, mode).ConfigureAwait(false);
}
using (image)
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
image.Seek(0);
WriteableBitmap bitmap = null;
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Low, async() =>
{
bitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
await bitmap.SetSourceAsync(image);
});
return(bitmap);
}
}
public async static Task <BitmapHolder> ToBitmapHolderAsync(this byte[] imageBytes, Tuple <int, int> downscale, InterpolationMode mode)
{
if (imageBytes == null)
{
return(null);
}
IRandomAccessStream image = imageBytes.AsBuffer().AsStream().AsRandomAccessStream();
if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
{
image = await image.ResizeImage((uint)downscale.Item1, (uint)downscale.Item2, mode).ConfigureAwait(false);
}
using (image)
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
PixelDataProvider pixelDataProvider = await decoder.GetPixelDataAsync();
var bytes = pixelDataProvider.DetachPixelData();
int[] array = new int[decoder.PixelWidth * decoder.PixelHeight];
CopyPixels(bytes, array);
return(new BitmapHolder(array, (int)decoder.PixelWidth, (int)decoder.PixelHeight));
}
}
public async static Task <WriteableBitmap> ToBitmapImageAsync(this Stream imageStream, Tuple <int, int> downscale, bool downscaleDipUnits, InterpolationMode mode, bool allowUpscale, ImageInformation imageInformation = null)
{
if (imageStream == null)
{
return(null);
}
using (IRandomAccessStream image = imageStream.AsRandomAccessStream())
{
if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
{
using (var downscaledImage = await image.ResizeImage(downscale.Item1, downscale.Item2, mode, downscaleDipUnits, allowUpscale, imageInformation).ConfigureAwait(false))
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(downscaledImage);
downscaledImage.Seek(0);
WriteableBitmap resizedBitmap = null;
await MainThreadDispatcher.Instance.PostAsync(async() =>
{
resizedBitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
await resizedBitmap.SetSourceAsync(downscaledImage);
});
return(resizedBitmap);
}
}
else
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
image.Seek(0);
WriteableBitmap bitmap = null;
if (imageInformation != null)
{
imageInformation.SetCurrentSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
imageInformation.SetOriginalSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
}
await MainThreadDispatcher.Instance.PostAsync(async() =>
{
bitmap = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
await bitmap.SetSourceAsync(image);
});
return(bitmap);
}
}
}
public async static Task <BitmapHolder> ToBitmapHolderAsync(this Stream imageStream, Tuple <int, int> downscale, bool downscaleDipUnits, InterpolationMode mode, bool allowUpscale, ImageInformation imageInformation = null)
{
if (imageStream == null)
{
return(null);
}
using (IRandomAccessStream image = imageStream.AsRandomAccessStream())
{
if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
{
using (var downscaledImage = await image.ResizeImage(downscale.Item1, downscale.Item2, mode, downscaleDipUnits, allowUpscale, imageInformation).ConfigureAwait(false))
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(downscaledImage);
PixelDataProvider pixelDataProvider = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8, BitmapAlphaMode.Straight, new BitmapTransform(),
ExifOrientationMode.RespectExifOrientation, ColorManagementMode.DoNotColorManage);
var bytes = pixelDataProvider.DetachPixelData();
return(new BitmapHolder(bytes, (int)decoder.PixelWidth, (int)decoder.PixelHeight));
}
}
else
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
PixelDataProvider pixelDataProvider = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8, BitmapAlphaMode.Straight, new BitmapTransform(),
ExifOrientationMode.RespectExifOrientation, ColorManagementMode.DoNotColorManage);
if (imageInformation != null)
{
imageInformation.SetCurrentSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
imageInformation.SetOriginalSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
}
var bytes = pixelDataProvider.DetachPixelData();
return(new BitmapHolder(bytes, (int)decoder.PixelWidth, (int)decoder.PixelHeight));
}
}
}
public async static Task <BitmapHolder> ToBitmapHolderAsync(this Stream imageStream, Tuple <int, int> downscale, bool downscaleDipUnits, InterpolationMode mode, ImageInformation imageInformation = null)
{
if (imageStream == null)
{
return(null);
}
using (IRandomAccessStream image = imageStream.AsRandomAccessStream())
{
if (downscale != null && (downscale.Item1 > 0 || downscale.Item2 > 0))
{
using (var downscaledImage = await image.ResizeImage(downscale.Item1, downscale.Item2, mode, downscaleDipUnits, imageInformation).ConfigureAwait(false))
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(downscaledImage);
PixelDataProvider pixelDataProvider = await decoder.GetPixelDataAsync();
var bytes = pixelDataProvider.DetachPixelData();
int[] array = new int[decoder.PixelWidth * decoder.PixelHeight];
CopyPixels(bytes, array);
return(new BitmapHolder(array, (int)decoder.PixelWidth, (int)decoder.PixelHeight));
}
}
else
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(image);
PixelDataProvider pixelDataProvider = await decoder.GetPixelDataAsync();
if (imageInformation != null)
{
imageInformation.SetCurrentSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
imageInformation.SetOriginalSize((int)decoder.PixelWidth, (int)decoder.PixelHeight);
}
var bytes = pixelDataProvider.DetachPixelData();
int[] array = new int[decoder.PixelWidth * decoder.PixelHeight];
CopyPixels(bytes, array);
return(new BitmapHolder(array, (int)decoder.PixelWidth, (int)decoder.PixelHeight));
}
}
}
