EventDelay.h

/*
 * EventDelay.h
 *
 * This file is part of Mozzi.
 *
 * Copyright 2012-2024 Tim Barrass and the Mozzi Team
 *
 * Mozzi is licensed under the GNU Lesser General Public Licence (LGPL) Version 2.1 or later.
 *
 */
 
#ifndef EVENTDELAY_H_
#define EVENTDELAY_H_
 
 
class EventDelay
{
 
public:
    
    EventDelay(unsigned int delay_milliseconds = 0): AUDIO_TICKS_PER_MILLISECOND((float)MOZZI_AUDIO_RATE/1000.0f)
    {
        set(delay_milliseconds);
    }   
    
    
    inline
    void set(unsigned int delay_milliseconds)
    {
        ticks = (unsigned long)(AUDIO_TICKS_PER_MILLISECOND*delay_milliseconds); // 12us
    }
 
 
    inline
    void start()
    {
        deadline=audioTicks()+ticks;
    }
    
    
    inline
    void start(unsigned int delay_milliseconds)
    {
        set(delay_milliseconds);
        start();
    }
 
 
    inline
    bool ready()
    {
        return(audioTicks()>=deadline); // 1us
    }
 
 
protected:
    // Metronome accesses these
    unsigned long deadline; 
    unsigned long ticks;
    
private:
    const float AUDIO_TICKS_PER_MILLISECOND; 
};
 
#endif /* EVENTDELAY_H_ */