view layer/SliceLayer.h @ 1386:fc3d89f88690 spectrogramparam

Use log-frequency rather than log-bin for calculating x coord in spectrum. This has the advantage that frequency positions don't move when we change the window size or oversampling ratio, but it does give us an unhelpfully large amount of space for very low frequencies - to be considered

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef SV_SLICE_LAYER_H
#define SV_SLICE_LAYER_H

#include "SingleColourLayer.h"

#include "base/Window.h"

#include "data/model/DenseThreeDimensionalModel.h"

#include <QColor>

class SliceLayer : public SingleColourLayer
{
    Q_OBJECT

public:
    SliceLayer();
    ~SliceLayer();
    
    virtual const Model *getModel() const { return 0; }

    void setSliceableModel(const Model *model);    

    virtual void paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const;

    virtual QString getFeatureDescription(LayerGeometryProvider *v, QPoint &) const;

    virtual int getVerticalScaleWidth(LayerGeometryProvider *v, bool, QPainter &) const;
    virtual void paintVerticalScale(LayerGeometryProvider *v, bool, QPainter &paint, QRect rect) const;

    virtual int getHorizontalScaleHeight(LayerGeometryProvider *, QPainter &) const { return 0; }

    virtual ColourSignificance getLayerColourSignificance() const {
        return ColourAndBackgroundSignificant;
    }

    virtual bool hasLightBackground() const;

    virtual PropertyList getProperties() const;
    virtual QString getPropertyLabel(const PropertyName &) const;
    virtual QString getPropertyIconName(const PropertyName &) const;
    virtual PropertyType getPropertyType(const PropertyName &) const;
    virtual QString getPropertyGroupName(const PropertyName &) const;
    virtual int getPropertyRangeAndValue(const PropertyName &,
                                         int *min, int *max, int *deflt) const;
    virtual QString getPropertyValueLabel(const PropertyName &,
                                          int value) const;
    virtual RangeMapper *getNewPropertyRangeMapper(const PropertyName &) const;
    virtual void setProperty(const PropertyName &, int value);
    virtual void setProperties(const QXmlAttributes &);

    virtual bool getValueExtents(double &min, double &max,
                                 bool &logarithmic, QString &unit) const;

    virtual bool getDisplayExtents(double &min, double &max) const;
    virtual bool setDisplayExtents(double min, double max);

    virtual int getVerticalZoomSteps(int &defaultStep) const;
    virtual int getCurrentVerticalZoomStep() const;
    virtual void setVerticalZoomStep(int);
    virtual RangeMapper *getNewVerticalZoomRangeMapper() const;

    virtual bool hasTimeXAxis() const { return false; }

    virtual bool isLayerScrollable(const LayerGeometryProvider *) const { return false; }

    enum EnergyScale { LinearScale, MeterScale, dBScale, AbsoluteScale };

    enum SamplingMode { NearestSample, SampleMean, SamplePeak };

    enum PlotStyle { PlotLines, PlotSteps, PlotBlocks, PlotFilledBlocks };

    enum BinScale { LinearBins, LogBins, InvertedLogBins };

    bool usesSolidColour() const { return m_plotStyle == PlotFilledBlocks; }
    
    void setFillColourMap(int);
    int getFillColourMap() const { return m_colourMap; }

    void setEnergyScale(EnergyScale);
    EnergyScale getEnergyScale() const { return m_energyScale; }

    void setSamplingMode(SamplingMode);
    SamplingMode getSamplingMode() const { return m_samplingMode; }

    void setPlotStyle(PlotStyle style);
    PlotStyle getPlotStyle() const { return m_plotStyle; }

    void setBinScale(BinScale scale);
    BinScale getBinScale() const { return m_binScale; }

    void setThreshold(float);
    float getThreshold() const { return m_threshold; }

    void setGain(float gain);
    float getGain() const;

    void setNormalize(bool n);
    bool getNormalize() const;

    virtual void toXml(QTextStream &stream, QString indent = "",
                       QString extraAttributes = "") const;

public slots:
    void sliceableModelReplaced(const Model *, const Model *);
    void modelAboutToBeDeleted(Model *);

protected:
    /// Convert a (possibly non-integral) bin into x-coord. May be overridden
    virtual double getXForBin(const LayerGeometryProvider *, double bin) const;
    
    /// Convert an x-coord into (possibly non-integral) bin. May be overridden
    virtual double getBinForX(const LayerGeometryProvider *, double x) const;

    /// Convert a point such as a bin number into x-coord, given max &
    /// min. For use by getXForBin etc
    double getXForScalePoint(const LayerGeometryProvider *,
                             double p, double pmin, double pmax) const;

    /// Convert an x-coord into a point such as a bin number, given
    /// max & min. For use by getBinForX etc
    double getScalePointForX(const LayerGeometryProvider *,
                             double x, double pmin, double pmax) const;

    virtual double getYForValue(const LayerGeometryProvider *v, double value, double &norm) const;
    virtual double getValueForY(const LayerGeometryProvider *v, double y) const;
    
    virtual QString getFeatureDescriptionAux(LayerGeometryProvider *v, QPoint &,
                                             bool includeBinDescription,
                                             int &minbin, int &maxbin,
                                             int &range) const;

    // This curve may, of course, be flat -- the spectrum uses it for
    // normalizing the fft results by the fft size (with 1/(fftsize/2)
    // in each bin).
    typedef std::vector<float> BiasCurve;
    virtual void getBiasCurve(BiasCurve &) const { return; }

    virtual float getThresholdDb() const;

    virtual int getDefaultColourHint(bool dark, bool &impose);

    const DenseThreeDimensionalModel *m_sliceableModel;
    int                               m_colourMap;
    bool                              m_colourInverted;
    EnergyScale                       m_energyScale;
    SamplingMode                      m_samplingMode;
    PlotStyle                         m_plotStyle;
    BinScale                          m_binScale;
    bool                              m_normalize;
    float                             m_threshold;
    float                             m_initialThreshold;
    float                             m_gain;
    int                               m_minbin;
    int                               m_maxbin;
    mutable std::vector<int>          m_scalePoints;
    mutable int                       m_scalePaintHeight;
    mutable std::map<int, int>        m_xorigins; // LayerGeometryProvider id -> x
    mutable std::map<int, int>        m_yorigins; // LayerGeometryProvider id -> y
    mutable std::map<int, int>        m_heights;  // LayerGeometryProvider id -> h
    mutable sv_frame_t                m_currentf0;
    mutable sv_frame_t                m_currentf1;
    mutable std::vector<float>        m_values;
};

#endif