---

gapefunctionunit.h

// gapefunctionunit.h
// Dave Chisholm dkc@ccrma.stanford.edu 11/21/00
// This file contains definitions for GapeFunctionUnit, and subclasses for sine wave, square wave, triangle wave,
// halfwave and sawtooth functions.
#ifndef _GAPE_FUNCTION_UNIT_H
#define _GAPE_FUNCTION_UNIT_H

#include "gapeunit.h"
#include "gapesimplecontroller.h"
class WvIn;

#define GAPE_FUNCTION_UNIT_DEFAULT_FREQ GAPE_SIMPLE_CONTROLLER_DEFAULT_FREQ
#define GAPE_FUNCTION_UNIT_DEFAULT_GAIN GAPE_SIMPLE_CONTROLLER_DEFAULT_GAIN
#define GAPE_FN_BUFFER_LENGTH   2560
#define GAPE_DRAWN_WAVEFORM_BUFFER_LENGTH 64
#define GAPE_FILE_SAMPLE_UNIT_MAX_SIZE 192000
#define GAPE_FUNCTION_UNIT_MAX_HARMONICS 500


class GapeFunctionUnit : public GapeUnit {
Q_OBJECT
        public:
            GapeFunctionUnit(GapeController* c = NULL, int nChannels = 1);
        virtual ~GapeFunctionUnit();

        public slots:
            virtual void receiveTick(const GapeFloat* values, int numValues);

        protected:
            virtual void fillBuffer() = 0;
            void normalize();
            GapeFloat* sampleData;
            int dataLength;
            bool initialized;// = false;
            double period;// = GapeConsts::sampleRate / frequency;//period in samples
            double timeScalar;// = ((double) dataLength) / period;
            double oldFrequency;// = frequency;
            double currentTime;// = 0.0;//in samples
            char errorBuffer[255];
};

class GapeSineUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeSineUnit()
        : GapeFunctionUnit() {}

        GapeSineUnit(QWidget* parent)
        : GapeFunctionUnit(new GapeSimpleController(parent,"Sine Wave")) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSineUnitController",QPixmap("sine.bmp"))) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSineUnitController",GapeConsts::sinePic)) {}
        virtual ~GapeSineUnit() {}

    protected:
        virtual void fillBuffer();
};

class GapeSquareUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeSquareUnit()
        : GapeFunctionUnit() {}

        GapeSquareUnit(QWidget* parent)
        : GapeFunctionUnit(new GapeSimpleController(parent,"Square Wave")) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSquareUnitController"), QPixmap("sine.bmp")) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSquareUnit",&GapeConsts::squarePic)) {}
        virtual ~GapeSquareUnit() {}

    protected:
        virtual void fillBuffer();
};

class GapeSawtoothUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeSawtoothUnit()
        : GapeFunctionUnit() {}

        GapeSawtoothUnit(QWidget* parent)
        : GapeFunctionUnit(new GapeSimpleController(parent,"Sawtooth Wave")) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSawtoothUnit",&GapeConsts::sawtoothPic)) {}
        virtual ~GapeSawtoothUnit() {}

    protected:
        virtual void fillBuffer();
};

class GapeTriangleUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeTriangleUnit()
        : GapeFunctionUnit() {}

        GapeTriangleUnit(QWidget* parent)
        : GapeFunctionUnit(new GapeSimpleController(parent,"Triangle Wave")) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeTriangleUnit",&GapeConsts::trianglePic)) {}
        virtual ~GapeTriangleUnit() {}

    protected:
        virtual void fillBuffer();
};

class GapeHalfwaveUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeHalfwaveUnit()
        : GapeFunctionUnit() {}

        GapeHalfwaveUnit(QWidget* parent)
        : GapeFunctionUnit(new GapeSimpleController(parent,"Halfwave ")) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeHalfwaveUnit",&GapeConsts::halfwavePic)) {}
        virtual ~GapeHalfwaveUnit() {}

    protected:
        virtual void fillBuffer();

};

class GapeDrawnWaveformUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeDrawnWaveformUnit(QWidget* parent);

        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSineUnitController",QPixmap("sine.bmp"))) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSineUnitController",GapeConsts::sinePic)) {}
        virtual ~GapeDrawnWaveformUnit() {delete xData;}

    public slots:
        void setPoint(double x, double y);

    protected:
        virtual void fillBuffer();
        double * xData;
};

class GapeFileSampleUnit : public GapeFunctionUnit {
    Q_OBJECT
    public:
        GapeFileSampleUnit (QWidget* parent, const QString& file);

        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSineUnitController",QPixmap("sine.bmp"))) {}
        //: GapeFunctionUnit(new GapeSimpleController(parent,"GapeSineUnitController",GapeConsts::sinePic)) {}
        virtual ~GapeFileSampleUnit ();

    public slots:
            virtual void receiveTick(const GapeFloat* values, int numValues);

    protected:
        virtual void fillBuffer();
        WvIn* dataReader;
        QString* filename;
        bool validFile;
};


#endif

---