WritableWaveFileModel.h

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/* -*- 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 WRITABLE_WAVE_FILE_MODEL_H
#define WRITABLE_WAVE_FILE_MODEL_H

#include "WaveFileModel.h"
#include "ReadOnlyWaveFileModel.h"
#include "PowerOfSqrtTwoZoomConstraint.h"

class WavFileWriter;
class WavFileReader;

class WritableWaveFileModel : public WaveFileModel
{
    Q_OBJECT

public:
    enum class Normalisation { None, Peak };

    WritableWaveFileModel(QString path,
                          sv_samplerate_t sampleRate,
                          int channels,
                          Normalisation normalisation);
    
    WritableWaveFileModel(sv_samplerate_t sampleRate,
                          int channels,
                          Normalisation normalisation);

    WritableWaveFileModel(sv_samplerate_t sampleRate,
                          int channels);

    ~WritableWaveFileModel();

    virtual bool addSamples(const float *const *samples, sv_frame_t count);

    void updateModel();
    
    void setWriteProportion(int proportion);

    void writeComplete();

    static const int PROPORTION_UNKNOWN;
    
    int getWriteProportion() const;
    
    bool isOK() const override;
    
    int getCompletion() const override { return 100; }

    const ZoomConstraint *getZoomConstraint() const override {
        static PowerOfSqrtTwoZoomConstraint zc;
        return &zc;
    }

    sv_frame_t getFrameCount() const override;
    int getChannelCount() const override { return m_channels; }
    sv_samplerate_t getSampleRate() const override { return m_sampleRate; }
    sv_samplerate_t getNativeRate() const override { return m_sampleRate; }

    QString getTitle() const override {
        if (m_model) return m_model->getTitle();
        else return "";
    } 
    QString getMaker() const override {
        if (m_model) return m_model->getMaker();
        else return "";
    }
    QString getLocation() const override {
        if (m_model) return m_model->getLocation();
        else return "";
    }

    float getValueMinimum() const override { return -1.0f; }
    float getValueMaximum() const override { return  1.0f; }

    sv_frame_t getStartFrame() const override { return m_startFrame; }
    sv_frame_t getTrueEndFrame() const override { return m_startFrame + getFrameCount(); }

    void setStartFrame(sv_frame_t startFrame) override;

    floatvec_t getData(int channel, sv_frame_t start, sv_frame_t count) const override;

    std::vector<floatvec_t> getMultiChannelData(int fromchannel, int tochannel, sv_frame_t start, sv_frame_t count) const override;

    int getSummaryBlockSize(int desired) const override;

    void getSummaries(int channel, sv_frame_t start, sv_frame_t count,
                              RangeBlock &ranges, int &blockSize) const override;

    Range getSummary(int channel, sv_frame_t start, sv_frame_t count) const override;

    QString getTypeName() const override { return tr("Writable Wave File"); }

    void toXml(QTextStream &out,
                       QString indent = "",
                       QString extraAttributes = "") const override;

signals:
    void writeCompleted(ModelId);

protected slots:
    void componentModelChanged(ModelId);
    void componentModelChangedWithin(ModelId, sv_frame_t, sv_frame_t);
    
protected:
    ReadOnlyWaveFileModel *m_model;

    WavFileWriter *m_temporaryWriter;
    QString m_temporaryPath;

    WavFileWriter *m_targetWriter;
    QString m_targetPath;

    WavFileReader *m_reader;
    Normalisation m_normalisation;
    sv_samplerate_t m_sampleRate;
    int m_channels;
    sv_frame_t m_frameCount;
    sv_frame_t m_startFrame;
    int m_proportion;

private:
    void init(QString path = "");
    void normaliseToTarget();
};

#endif