public static MemoryStream ToMemoryStream([NotNull] this BitmapSource bitmapSource,
[NotNull][InstantHandle] BitmapEncoderFactory bitmapEncoderFactory)
{
if (bitmapSource == null)
{
throw new ArgumentNullException(nameof(bitmapSource));
}
if (bitmapEncoderFactory == null)
{
throw new ArgumentNullException(nameof(bitmapEncoderFactory));
}
var bitmapEncoder = bitmapEncoderFactory.Invoke();
{
var bitmapFrame = BitmapFrame.Create(bitmapSource);
bitmapEncoder.Frames.Add(bitmapFrame);
}
var result = new MemoryStream();
bitmapEncoder.Save(result);
result.Seek(0L,
SeekOrigin.Begin);
return(result);
}
public static async Task <BitmapSize> ConvertAsync(
List <ImageViewModel> images,
StorageFolder targetFolder,
BitmapConversionSettings settings,
Action <int> progressCallback)
{
foreach (var image in images)
{
image.Status = image.ExtendedStatus = null;
}
uint success = 0;
uint fail = 0;
int i = 1;
foreach (var image in images)
{
progressCallback(i);
i++;
image.Status = "Converting...";
try
{
BitmapConversionResult result =
await BitmapEncoderFactory.EncodeAsync(image.File, targetFolder, settings).AsTask().ConfigureAwait(false);
if (result.Success)
{
image.Status = $"Converted ({result.ResultFileSize / 1024d / 1024d:0.00} MB)";
image.LastSuccess = true;
success++;
}
else
{
image.Status = "Failed";
image.ExtendedStatus = result.Status;
image.LastSuccess = false;
fail++;
}
}
catch
{
image.Status = "Failed";
image.ExtendedStatus = "Unspecified error";
fail++;
}
}
return(new BitmapSize {
Width = success, Height = fail
});
}
