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gapeaudioplot.cpp

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


#include "gapeaudioplot.h"
#include "gapezoomableslider.h"
#include <qcheckbox.h>
#include <qlcdnumber.h>
#include <qsize.h>
#include <qfont.h>
#include <qlayout.h>
#include <qcheckbox.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include <stdlib.h>



//
//  Initialize main window
//
GapeAudioPlot::GapeAudioPlot( QWidget *parent, const char* title, const char* xlabel, const char* ylabel,
                int nSamples, double independentScalar, int rFrequency)
  : GapeController(parent),
    plotDisplay(new QwtPlot(this))
{
    numSamples = nSamples;
    plotDisplayCounter = 0;
    refreshFrequency = rFrequency;

   //  Initialize data
  for( int i = 0; i < AUDIOPLOT_MAX_NUM_SAMPLES; ++i )
    {
      sampleIndices[i] = i * independentScalar;
      samples[i]       = 0.0;
    }

    // Insert new curves
    curveHandle = plotDisplay->insertCurve( "samples" );
    plotDisplay->setCurveRawData( curveHandle, sampleIndices,
                 samples, numSamples );

    // Set background and curve colors.
    setBackgroundColor( AUDIOPLOT_DEFAULT_BG_COLOR );
    setCurveColor( AUDIOPLOT_DEFAULT_CURVE_COLOR );

    // Set the border width around the edge of the plot.
    plotDisplay->setPlotBorder( 5 );

    // Turn off Auto Replotting.
    plotDisplay->setAutoReplot( false );

    // Turn off autoscaling and set fixed axes.
    //  plotDisplay->setAxisScale( QwtPlot::yLeft, -1.0, 1.0 );
    plotDisplay->setAxisScale( QwtPlot::xBottom, 0, sampleIndices[numSamples-1] );

    //  Insert zero line at y = 0
     long mY = plotDisplay->insertLineMarker( "", QwtPlot::yLeft );
     plotDisplay->setMarkerYPos( mY, 0.0 );

    // Assign a title
    plotDisplay->setTitle( title );
    plotDisplay->setTitleFont( QFont("Times", 11, QFont::Bold) );

    // Set axis titles and fonts
    plotDisplay->setAxisTitle( QwtPlot::xBottom, xlabel );
    plotDisplay->setAxisTitleFont( QwtPlot::xBottom, QFont("Times", 10) );
    plotDisplay->setAxisTitle( QwtPlot::yLeft,   ylabel );
    plotDisplay->setAxisTitleFont( QwtPlot::yLeft, QFont("Times", 10) );

    // Set Minimum Size
    setMinimumSize( 500,200 );
    //getWidget()->setMinimumSize( 500,200 );
}


void GapeAudioPlot::receiveTick(const GapeFloat* values, int numValues) {
    //if we are sent too many samples, just graph as many as we can handle and ignore the rest
    if (numValues > AUDIOPLOT_MAX_NUM_SAMPLES) {
        numValues = AUDIOPLOT_MAX_NUM_SAMPLES;
        GapeConsts::reportError("Too many samples in GapeAudioPlot receiveTick(), gapeaudioplot.cpp line 83\n");
    }

  if (numValues <= 0 || values == NULL) return;

  if (sizeof(GapeFloat) != sizeof (double)) {
        GapeConsts::reportError("not using doubles, audioplot can't graph, gapeaudioplot.cpp line 89\n");
    }

    if(++plotDisplayCounter == refreshFrequency) {
        plotDisplayCounter = 0;

        if (numValues != numSamples) {
            numSamples = numValues;
            plotDisplay->setCurveRawData( curveHandle, sampleIndices,
                     samples,     numSamples );
            plotDisplay->setAxisScale( QwtPlot::xBottom, 0,
                sampleIndices[numSamples-1] );
        }

        memcpy(samples, values, numSamples * sizeof(GapeFloat));

        requestUpdate();
    }

}


GapeTimeDomainPlot::GapeTimeDomainPlot( QWidget *parent, const char* title, const char* hlabel, const char* vlabel,
                    int nSamples,   double independentScalar, int rFrequency)
: GapeAudioPlot (parent,title,hlabel,vlabel,nSamples,independentScalar,rFrequency) {

    autoScaleBox = new QCheckBox("Auto-scale amplitude?",this);
    muteBox = new QCheckBox("Freeze",this);
    numSamplesSlider = new GapeZoomableSlider( AUDIOPLOT_MIN_NUM_SAMPLES, AUDIOPLOT_MAX_NUM_SAMPLES, 1,
                                                    AUDIOPLOT_DEFAULT_NUM_SAMPLES, QSlider::Horizontal, this );
    numSamplesLCD = new QLCDNumber(4,this);
    numSamplesLCD->display(AUDIOPLOT_DEFAULT_NUM_SAMPLES);

    layout = new QGridLayout(this,2,4);
    layout->addMultiCellWidget(plotDisplay,0,0,0,3);
    layout->addWidget(autoScaleBox,1,0);
    layout->addWidget(numSamplesSlider,1,1);
    layout->addWidget(numSamplesLCD,1,2);
    layout->addWidget(muteBox,1,3);

    connect(numSamplesSlider, SIGNAL (valueChanged(int)), numSamplesLCD, SLOT(display(int)));
    connect(numSamplesSlider, SIGNAL (valueChanged(int)), this, SIGNAL(emitNumSamples(int)));
    connect(autoScaleBox, SIGNAL (toggled(bool)), this, SLOT(setRangeAutoscale(bool)));
    connect(muteBox, SIGNAL (toggled(bool)), this, SLOT(setMute(bool)));
    autoScaleBox->setChecked(true);
    muteBox->setChecked(false);
}


GapeFreqDomainPlot::GapeFreqDomainPlot( QWidget *parent, const char* title, const char* hlabel,
            const char* vlabel, int rFrequency)
: GapeAudioPlot (parent, title, hlabel, vlabel, ((GAPE_NFFT_LENGTH + 1) / 2), GapeConsts::sampleRate / 2.0 / ((GAPE_NFFT_LENGTH + 1) / 2.0), rFrequency) {


    /*numSamplesSlider = new GapeZoomableSlider( AUDIOPLOT_MIN_NUM_SAMPLES, AUDIOPLOT_MAX_NUM_SAMPLES, 1,
                                                    AUDIOPLOT_DEFAULT_NUM_SAMPLES, QSlider::Horizontal, this );
    numSamplesLCD = new QLCDNumber(4,this);
*/
    autoScaleBox = new QCheckBox("Auto-scale amplitude?",this);
    logSpecBox = new QCheckBox("Show log magnitiude of spectrum?",this);
    muteBox = new QCheckBox("Freeze",this);

    layout = new QGridLayout(this,2,3);
    layout->addMultiCellWidget(plotDisplay,0,0,0,2);
    layout->addWidget(autoScaleBox,1,0);
    layout->addWidget(logSpecBox,1,1);
    layout->addWidget(muteBox,1,2);
/*
    connect(numSamplesSlider, SIGNAL (valueChanged(int)), numSamplesLCD, SLOT(display(int)));
GapeConsts::reportError("freq plot cons3.1\n");
    connect(numSamplesSlider, SIGNAL (valueChanged(int)), this, SIGNAL(emitNumSamples(int)));
GapeConsts::reportError("freq plot cons3.2\n");
*/
    connect(autoScaleBox, SIGNAL (toggled(bool)), this, SLOT(setRangeAutoscale(bool)));
    connect(logSpecBox, SIGNAL (toggled(bool)), this, SLOT(takeLogOfSpectrum(bool)));
    connect(muteBox, SIGNAL (toggled(bool)), this, SLOT(setMute(bool)));
    autoScaleBox->setChecked(true);
    logSpecBox->setChecked(false);
    muteBox->setChecked(false);
}

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