virtual void transition_to_rolling (bool fwd) = 0;
virtual nframes64_t unit_to_frame (double unit) const = 0;
// XXX remove me when libardour goes nframes64_t
virtual void transition_to_rolling (bool fwd) = 0;
virtual nframes64_t unit_to_frame (double unit) const = 0;
// XXX remove me when libardour goes nframes64_t