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gapeaudioplot.h

//gapeaudioplot.h
//11/27/00
//Dave Chisholm dkc@ccrma.stanford.edu

#ifndef _GAPE_AUDIO_PLOT_H_
#define _GAPE_AUDIO_PLOT_H_

#include "gapecontroller.h"
#include <qcolor.h>
#include <qwt_plot.h>
class QSize;
class QCheckBox;
class GapeZoomableSlider;
class   QLCDNumber;
class QGridLayout;

// Constant Definition
#define  AUDIOPLOT_MAX_NUM_SAMPLES        4096
#define  AUDIOPLOT_MIN_NUM_SAMPLES        128
#define  AUDIOPLOT_DEFAULT_NUM_SAMPLES    2048
#define  AUDIOPLOT_IVAR_SCALAR            1.0
#define  AUDIOPLOT_DEFAULT_MIN_RANGE_VAL  (-1.0)
#define  AUDIOPLOT_DEFAULT_MAX_RANGE_VAL  1.0
#define  AUDIOPLOT_DEFAULT_BG_COLOR       Qt::black
#define  AUDIOPLOT_DEFAULT_CURVE_COLOR    Qt::green
#define  AUDIOPLOT_DEFAULT_REFRESH_FREQUENCY 1
#define AUDIOPLOT_HEIGHT 75
#define AUDIOPLOT_WIDTH 200

class GapeAudioPlot : public GapeController {
    Q_OBJECT
    public:

        GapeAudioPlot( QWidget *parent = NULL, const char* title  = "", const char* hlabel = "", const char* vlabel = "",
                        int nSamples = AUDIOPLOT_DEFAULT_NUM_SAMPLES,   double independentScalar = AUDIOPLOT_IVAR_SCALAR, int rFrequency = AUDIOPLOT_DEFAULT_REFRESH_FREQUENCY);

    ~GapeAudioPlot() {}

        void setBackgroundColor( const QColor& color ) {
            plotDisplay->setPlotBackground( color );
        }

        void setCurveColor( const QColor& color ) {
            plotDisplay->setCurvePen(curveHandle, QPen(color));
        }

    void resize(const QSize& size) {
        plotDisplay->resize( size );
            plotDisplay->move( 0, 0 );
        }

      void setAxisTitle(int axis, const char *t) {
            plotDisplay->setAxisTitle(axis, t);
      }


    //  void plot(const double* samples, int nSamples = 1);


  public slots:

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

    void setRefreshFrequency(int rf) {
            refreshFrequency = rf;
        }

    virtual void setRangeAutoscale(bool autoScaleOn) {
            if (autoScaleOn) {
                plotDisplay->setAxisAutoScale( QwtPlot::yLeft );
            } else {
                plotDisplay->setAxisScale( QwtPlot::yLeft, AUDIOPLOT_DEFAULT_MIN_RANGE_VAL, AUDIOPLOT_DEFAULT_MAX_RANGE_VAL );
            }
            emit emitSetRangeAutoScale(autoScaleOn);
        }

        signals:
        void emitSetRangeAutoScale(bool t);


    protected:
    virtual void updateDisplay() {
            plotDisplay->replot();
        }
        QwtPlot*           plotDisplay;

    private:
        //QSize preferredSize;
        //QCheckBox*                     autoScale;
      int                numSamples;
      double             sampleIndices[AUDIOPLOT_MAX_NUM_SAMPLES];
      double             samples[AUDIOPLOT_MAX_NUM_SAMPLES];
      long               curveHandle;
      int                plotDisplayCounter, refreshFrequency;
};

class GapeTimeDomainPlot : public GapeAudioPlot {
    Q_OBJECT
    public:

        GapeTimeDomainPlot( QWidget *parent = NULL, const char* title  = "Time Domain", const char* hlabel = "Samples", const char* vlabel = "Amplitiude",
                            int nSamples = AUDIOPLOT_DEFAULT_NUM_SAMPLES,   double independentScalar = AUDIOPLOT_IVAR_SCALAR, int rFrequency = AUDIOPLOT_DEFAULT_REFRESH_FREQUENCY);
      ~GapeTimeDomainPlot() {}

    signals:
        void emitNumSamples(int ns);

    private:
        QCheckBox* autoScaleBox;
        GapeZoomableSlider* numSamplesSlider;
        QLCDNumber* numSamplesLCD;
        QGridLayout* layout;
        QCheckBox* muteBox;
};


class GapeFreqDomainPlot : public GapeAudioPlot {
    Q_OBJECT
    public:
        GapeFreqDomainPlot( QWidget *parent = NULL, const char* title  = "Freq Domain", const char* hlabel = "Frequency",
                            const char* vlabel = "Magnitude",   int rFrequency = AUDIOPLOT_DEFAULT_REFRESH_FREQUENCY);
      ~GapeFreqDomainPlot() {}

    public slots:
        void takeLogOfSpectrum(bool t)  {
            if(t) { // box checked
                setAxisTitle( QwtPlot::yLeft, "Log Magnitude" );
                //plotDisplay->setAxisScale( QwtPlot::yLeft, -90, 0);//ugly I don't have time ot fix this
                emit emitTakeLogOfSpectrum(true);
                //emit emitSetRangeAutoScale(false);
            } else {
                setAxisTitle( QwtPlot::yLeft, "Magnitude" );
                //setRangeAutoscale(false);
                emit emitTakeLogOfSpectrum(false);
            }
        }

        virtual void setRangeAutoscale(bool autoScaleOn) {
            if (autoScaleOn) {
                plotDisplay->setAxisAutoScale( QwtPlot::yLeft );
            } else {
                plotDisplay->setAxisScale( QwtPlot::yLeft, 0, AUDIOPLOT_DEFAULT_MAX_RANGE_VAL );
            }
            emit emitSetRangeAutoScale(autoScaleOn);
        }


    signals:
        void emitNumSamples(int ns);

        void emitTakeLogOfSpectrum(bool t);

    private:
        QCheckBox* autoScaleBox;
        QCheckBox* logSpecBox;
        GapeZoomableSlider* numSamplesSlider;
        QLCDNumber* numSamplesLCD;
        QCheckBox* muteBox;
        QGridLayout* layout;
};

#endif

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