protected virtual void OnImageUploaded(ImageUploadedEvent eventArgs)
{
if (eventArgs == null)
{
throw new ArgumentException("eventArgs");
}
EventHub.Raise(eventArgs);
}
protected async Task <AsyncOut <IImage> > ProcessImage(MediaFile file, Stream inStream)
{
var originalSize = Size.Empty;
var format = _imageProcessor.Factory.FindFormatByExtension(file.Extension) ?? new UnsupportedImageFormat(file.MimeType, file.Extension);
try
{
originalSize = ImageHeader.GetPixelSize(inStream, file.MimeType);
}
catch
{
}
IImage outImage;
if (format is UnsupportedImageFormat)
{
outImage = new ImageWrapper(inStream, originalSize, format);
return(new AsyncOut <IImage>(true, outImage));
}
var maxSize = _mediaSettings.MaximumImageSize;
var query = new ProcessImageQuery(inStream)
{
Format = file.Extension,
DisposeSource = true,
ExecutePostProcessor = ImagePostProcessingEnabled,
IsValidationMode = true
};
if (originalSize.IsEmpty || (originalSize.Height <= maxSize && originalSize.Width <= maxSize))
{
// Give subscribers the chance to (pre)-process
var evt = new ImageUploadedEvent(query, originalSize);
await _eventPublisher.PublishAsync(evt);
outImage = evt.ResultImage ?? new ImageWrapper(inStream, originalSize, format);
return(new AsyncOut <IImage>(true, outImage));
}
query.MaxSize = maxSize;
using (var result = await _imageProcessor.ProcessImageAsync(query, false))
{
outImage = result.Image;
return(new AsyncOut <IImage>(true, outImage));
}
}
