One<StreamRaster> StreamRaster::OpenAny(Stream& s)
{
	INTERLOCKED_(sAnyRaster)
		for(int i = 0; i < Map().GetCount(); i++) {
			int64 p = s.GetPos();
			One<StreamRaster> raster = (*RasterFactory(Map()[i]))();
			s.ClearError();
			if(raster->Open(s))
				return raster;
			s.ClearError();
			s.Seek(p);
		}
	return NULL;
}