public bool TryCreateTransformer(HttpRequestBase request, IFormatInfo originalFormat, IFormatInfoProvider formatInfoProvider, out IMediaTransformer mediaTransformer)
{
var compositeTransformer = new CompositeMediaTransformer();
var factories = _transformerFactories.ToList();
AddTransformerToComposite(request, originalFormat, compositeTransformer, factories, formatInfoProvider);
mediaTransformer = compositeTransformer;
return compositeTransformer.Count > 0;
}
public bool TryCreateTransformer(HttpRequestBase request, IFormatInfo originalFormat, IFormatInfoProvider formatInfoProvider, out IMediaTransformer mediaTransformer)
{
var compositeTransformer = new CompositeMediaTransformer();
var factories = _transformerFactories.ToList();
AddTransformerToComposite(request, originalFormat, compositeTransformer, factories, formatInfoProvider);
mediaTransformer = compositeTransformer;
return(compositeTransformer.Count > 0);
}
private static void AddTransformerToComposite(HttpRequestBase request, IFormatInfo originalFormat, CompositeMediaTransformer compositeTransformer, List<IMediaTransformerFactory> factories, IFormatInfoProvider formatInfoProvider)
{
foreach (var transformerFactory in factories)
{
IMediaTransformer transformer;
if (transformerFactory.TryCreateTransformer(request, originalFormat, formatInfoProvider, out transformer))
{
compositeTransformer.AddMediaTransformer(transformer);
factories.Remove(transformerFactory);
AddTransformerToComposite( request, transformer.OutputFormat, compositeTransformer, factories, formatInfoProvider);
return;
}
}
}
private static void AddTransformerToComposite(HttpRequestBase request, IFormatInfo originalFormat, CompositeMediaTransformer compositeTransformer, List <IMediaTransformerFactory> factories, IFormatInfoProvider formatInfoProvider)
{
foreach (var transformerFactory in factories)
{
IMediaTransformer transformer;
if (transformerFactory.TryCreateTransformer(request, originalFormat, formatInfoProvider, out transformer))
{
compositeTransformer.AddMediaTransformer(transformer);
factories.Remove(transformerFactory);
AddTransformerToComposite(request, transformer.OutputFormat, compositeTransformer, factories, formatInfoProvider);
return;
}
}
}