/** Create an output using this format.
* @param filename Name of destination file.
* @param device Device to output for.
* @param options Mapping of (option name, value) pairs. */
shared_ptr<Output> create_output(string filename,
shared_ptr<Device> device,
/** Create an output using this format.
* @param filename Name of destination file.
* @param device Device to output for.
* @param options Mapping of (option name, value) pairs. */
shared_ptr<Output> create_output(string filename,
shared_ptr<Device> device,