/home/maxime/Projets/Mixxx/1.10/mixxx/src/engine/enginebufferscalelinear.h

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/***************************************************************************
                          enginebufferscalelinear.h  -  description
                             -------------------
    begin                : Mon Apr 14 2003
    copyright            : (C) 2003 by Tue & Ken Haste Andersen
    email                : haste@diku.dk
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef ENGINEBUFFERSCALELINEAR_H
#define ENGINEBUFFERSCALELINEAR_H

#include "enginebufferscale.h"
#include "readaheadmanager.h"

const int kiLinearScaleReadAheadLength = 10240;


class EngineBufferScaleLinear : public EngineBufferScale  {
public:
    EngineBufferScaleLinear(ReadAheadManager *pReadAheadManager);
    ~EngineBufferScaleLinear();
    CSAMPLE *scale(double playpos, unsigned long buf_size,
                   CSAMPLE* pBase, unsigned long iBaseLength);

    void setBaseRate(double dBaseRate);
    double setTempo(double dTempo);
    void clear();

private:
    CSAMPLE *do_scale(CSAMPLE* buf, unsigned long buf_size,
                      CSAMPLE* pBase, unsigned long iBaseLength,
                      int *samples_read);

    bool m_bBackwards;
    bool m_bClear;
    float m_fOldTempo;          
    float m_fOldBaseRate;       
    CSAMPLE *buffer_int;
    int buffer_int_size;
    CSAMPLE m_fPrevSample[2];
    // The read-ahead manager that we use to fetch samples
    ReadAheadManager* m_pReadAheadManager;
    double m_dCurSampleIndex;
    double m_dNextSampleIndex;

    /*QFile df;
    QTextStream writer;
    int buffer_count;*/
};

#endif