public async Task <ProcessImageResult> ProcessImageAsync(ProcessImageQuery query, bool disposeOutput = true)
{
Guard.NotNull(query, nameof(query));
ValidateQuery(query);
var watch = new Stopwatch();
long len;
IProcessableImage image = null;
try
{
watch.Start();
var source = query.Source;
// Load source
if (source is byte[] b)
{
using var memStream = new MemoryStream(b);
image = await Factory.LoadAsync(memStream);
len = b.LongLength;
}
else if (source is Stream s)
{
image = await Factory.LoadAsync(s);
len = s.Length;
}
else if (source is string str)
{
str = NormalizePath(str);
image = Factory.Load(str);
len = (new FileInfo(str)).Length;
}
else if (source is IFile file)
{
using (var fs = file.OpenRead())
{
image = await Factory.LoadAsync(fs);
len = file.Length;
}
}
else
{
throw new ProcessImageException("Invalid source type '{0}' in query.".FormatInvariant(query.Source.GetType().FullName), query);
}
var sourceFormat = image.Format;
// Pre-process event
await _eventPublisher.PublishAsync(new ImageProcessingEvent(query, image));
var result = new ProcessImageResult
{
Query = query,
SourceFormat = image.Format,
Image = image,
DisposeImage = disposeOutput
};
// >>>>>> Core processing
ProcessImageCore(query, image, out var fxApplied);
result.HasAppliedVisualEffects = fxApplied;
// Post-process event
await _eventPublisher.PublishAsync(new ImageProcessedEvent(query, result));
result.ProcessTimeMs = watch.ElapsedMilliseconds;
return(result);
}
catch (Exception ex)
{
throw new ProcessImageException(query, ex);
}
finally
{
if (query.DisposeSource && query.Source is IDisposable source)
{
source.Dispose();
}
watch.Stop();
_totalProcessingTime += watch.ElapsedMilliseconds;
}
}
public ImageProcessedEvent(ProcessImageQuery query, ProcessImageResult result)
{
Query = query;
Result = result;
}