- /**
- * Attempts to autodetect the format. Failing that
- * @param filename The filename of the input file.
- * @return A pointer to the 'struct sr_input_format' that should be
- * used, or NULL if no input format was selected or
- * auto-detected.
- */
- static sr_input_format* determine_input_file_format(
- const std::string &filename);