_structure(sr_output_new(format->_structure,
map_to_hash_variant(options), device->_structure, filename.c_str())),
_format(move(format)),
_device(move(device)),
_structure(sr_output_new(format->_structure,
map_to_hash_variant(options), device->_structure, filename.c_str())),
_format(move(format)),
_device(move(device)),