WaveformCalculator.h

/*
 * This file is part of libsidplayfp, a SID player engine.
 *
 * Copyright 2011-2016 Leandro Nini <drfiemost@users.sourceforge.net>
 * Copyright 2007-2010 Antti Lankila
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 
#ifndef WAVEFORMCALCULATOR_h
#define WAVEFORMCALCULATOR_h
 
#include <map>
 
#include "siddefs-fp.h"
#include "array.h"
 
 
namespace reSIDfp
{
 
typedef struct
{
    float bias;
    float pulsestrength;
    float topbit;
    float distance1;
    float distance2;
    float stmix;
} CombinedWaveformConfig;
 
class WaveformCalculator
{
private:
    typedef std::map<const CombinedWaveformConfig*, matrix_t> cw_cache_t;
 
private:
    cw_cache_t CACHE;
 
    static const CombinedWaveformConfig config[2][4];
 
private:
    short calculateCombinedWaveform(CombinedWaveformConfig config, int waveform, int accumulator) const;
 
    WaveformCalculator() {}
 
public:
    static WaveformCalculator* getInstance();
 
    matrix_t* buildTable(ChipModel model);
};
 
} // namespace reSIDfp
 
#endif