view data/model/Dense3DModelPeakCache.h @ 875:3e6ed8a8577b tonioni

Use a sparse time-value model only for outputs with fixed bin count of 1, not for those with unknown bin count.
(Precursor to using more than one model for outputs with unknown bin count)

/* -*- 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 2009 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 _DENSE_3D_MODEL_PEAK_CACHE_H_
#define _DENSE_3D_MODEL_PEAK_CACHE_H_

#include "DenseThreeDimensionalModel.h"
#include "EditableDenseThreeDimensionalModel.h"
#include "base/ResizeableBitset.h"

class Dense3DModelPeakCache : public DenseThreeDimensionalModel
{
    Q_OBJECT

public:
    Dense3DModelPeakCache(DenseThreeDimensionalModel *source,
                          size_t columnsPerPeak);
    ~Dense3DModelPeakCache();

    virtual bool isOK() const {
        return m_source && m_source->isOK(); 
    }

    virtual size_t getSampleRate() const {
        return m_source->getSampleRate();
    }

    virtual size_t getStartFrame() const {
        return m_source->getStartFrame();
    }

    virtual size_t getEndFrame() const {
        return m_source->getEndFrame();
    }

    virtual Model *clone() const {
        return new Dense3DModelPeakCache(m_source, m_resolution);
    }
    
    virtual size_t getResolution() const {
        return m_source->getResolution() * m_resolution;
    }

    virtual size_t getWidth() const {
        return m_source->getWidth() / m_resolution + 1;
    }

    virtual size_t getHeight() const {
        return m_source->getHeight();
    }

    virtual float getMinimumLevel() const {
        return m_source->getMinimumLevel();
    }

    virtual float getMaximumLevel() const {
        return m_source->getMaximumLevel();
    }

    virtual bool isColumnAvailable(size_t column) const;

    virtual Column getColumn(size_t column) const;

    virtual float getValueAt(size_t column, size_t n) const;

    virtual QString getBinName(size_t n) const {
        return m_source->getBinName(n);
    }

    virtual bool shouldUseLogValueScale() const {
        return m_source->shouldUseLogValueScale();
    }

    QString getTypeName() const { return tr("Dense 3-D Peak Cache"); }

    virtual int getCompletion() const {
        return m_source->getCompletion();
    }

protected slots:
    void sourceModelChanged();
    void sourceModelAboutToBeDeleted();

private:
    DenseThreeDimensionalModel *m_source;
    mutable EditableDenseThreeDimensionalModel *m_cache;
    mutable ResizeableBitset m_coverage;
    size_t m_resolution;

    bool haveColumn(size_t column) const;
    void fillColumn(size_t column) const;
};


#endif