hgenerator.h

#ifndef __HGENERATOR_H
#define __HGENERATOR_H
 
#include "hardt.h"
#include "hsoundcard.h"
#include "hobject.h"
#include "hreader.h"
#include <math.h>
#include <limits>
 
template <class T>
class HGenerator : public HReader<T>
{
    private:
 
        T* _lot;
        int _lotSize;
        int _it;
        float _delta;
        H_SAMPLE_RATE _rate;
 
        float* _flot;
 
        float _zero;
 
        void Init(H_SAMPLE_RATE rate, int frequency, T amplitude, float phase);
 
    protected:
 
        HGenerator(H_SAMPLE_RATE rate, int frequency, T amplitude, float phase = 0);
 
        ~HGenerator();
 
    public:
 
        int Read(T* dest, size_t blocksize);
 
        void Calculate(int frequency, T amplitude, float phase);
 
        bool Command(HCommand* command) {
            // No further propagation of commands
            return true;
        }
 
        inline T Current() {
            return _lot[_it];
        }
 
        inline T Next() {
 
            T value = _lot[_it];
 
            // Increase to next lot value
            _it += _delta;
 
            // Past the end of the lot ?
            if( _it >= _lotSize )
            {
                _it -= _lotSize;
            }
 
            return value;
        }
};
 
#endif