- double get_ratio( nframes64_t chasetime_measured, nframes64_t chasetime, nframes64_t slavetime_measured, nframes64_t slavetime, bool in_control );
+ double get_ratio( nframes64_t chasetime_measured, nframes64_t chasetime, nframes64_t slavetime_measured, nframes64_t slavetime, bool in_control, int period_size );