giuliomoro@135: #ifndef VIRTUAL_CLOCK_H_INCLUDED
giuliomoro@135: #define VIRTUAL_CLOCK_H_INCLUDED
giuliomoro@135: 
giuliomoro@141: #include "math.h"
giuliomoro@135: #include "stats.hpp"
giuliomoro@135: #include "Clock.h"
giuliomoro@149: #include "IirFilter.h"
giuliomoro@149: #include "Kalman.h"
giuliomoro@141: #ifdef USE_JUCE
giuliomoro@141: #else
giuliomoro@141: #include <BeagleRT.h>
giuliomoro@150: #include <I2c_Codec.h>
giuliomoro@150: extern I2c_Codec* gAudioCodec;
giuliomoro@141: #endif /* USE_JUCE */
giuliomoro@135: 
giuliomoro@135: class VirtualClock{
giuliomoro@135: private:
giuliomoro@135: 	myClock_t startTime;
giuliomoro@141: 	myClock_t startTimeOffset;
giuliomoro@149: 	myClock_t lastSyncTime;
giuliomoro@149: //	myClock_t lastSyncEstimatedTime;
giuliomoro@149: 	double lastSyncEstimatedTime;
giuliomoro@135: 	bool firstRun;
giuliomoro@141: 	double elapsedPeriods;
giuliomoro@141: 	double elapsedPeriodsOffset;
giuliomoro@149: 	double blockPeriod;
giuliomoro@135: 	double period;
giuliomoro@135: 	MovingAverage<double> movingAverage;
giuliomoro@149: 	IirFilter iir;
giuliomoro@149: 	KalmanOne kalman;
giuliomoro@135: public:
giuliomoro@149: 	void init(float initialValueUs);
giuliomoro@135: 	VirtualClock();
giuliomoro@135: /**
giuliomoro@135: 	Call this method at regular intervals to sync che virtual clock
giuliomoro@135: */
giuliomoro@135: 	void sync();
giuliomoro@135: /**
giuliomoro@135: 	Call this method asynchronously, passing a number of equally spaced events that have elapsed since the last call.
giuliomoro@135: */
giuliomoro@141: 	void sync(double numPeriods);
giuliomoro@135: /**
giuliomoro@135: 	Get the current time according to the VirtualClock.
giuliomoro@135: 	
giuliomoro@135: 	@return Time elapsed since the first call to sync(), in period units. 
giuliomoro@135: */
giuliomoro@135: 	double getNow();
giuliomoro@135: /** 
giuliomoro@135: 	Get the length of the period.
giuliomoro@135: 	
giuliomoro@135: 	Get the length of the period (difference between calls to sync() after various filtering operations)
giuliomoro@135: */
giuliomoro@135: 	double getPeriod();
giuliomoro@141: /**
giuliomoro@141:  * Add an offset to the number of elapsed periods.
giuliomoro@141:  *
giuliomoro@141:  * Add an offset to the number of elapsed periods. It also compensates for the corresponding time offset.
giuliomoro@141:  */
giuliomoro@141: 	void addOffset(double periodOffset);
giuliomoro@135: };
giuliomoro@135: 
giuliomoro@135: #endif /* VIRTUAL_CLOCK_H_INCLUDED */