FilterModelConfig.h

/*
 * This file is part of libsidplayfp, a SID player engine.
 *
 * Copyright 2011-2014 Leandro Nini <drfiemost@users.sourceforge.net>
 * Copyright 2007-2010 Antti Lankila
 * Copyright 2004,2010 Dag Lem
 *
 * 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 FILTERMODELCONFIG_H
#define FILTERMODELCONFIG_H
 
#include <memory>
 
#include "Spline.h"
 
namespace reSIDfp
{
 
class Integrator;
 
class FilterModelConfig
{
private:
    static const unsigned int OPAMP_SIZE = 33;
    static const unsigned int DAC_BITS = 11;
 
private:
    static std::auto_ptr<FilterModelConfig> instance;
    // This allows access to the private constructor
    friend class std::auto_ptr<FilterModelConfig>;
 
    static const Spline::Point opamp_voltage[OPAMP_SIZE];
 
    const double voice_voltage_range;
    const double voice_DC_voltage;
 
    const double C;
 
 
    const double Vdd;
    const double Vth;           
    const double Ut;            
    const double k;             
    const double uCox;          
    const double WL_vcr;        
    const double WL_snake;      
    const double kVddt;         
 
 
    const double dac_zero;
    const double dac_scale;
 
    // Derived stuff
    const double vmin, vmax;
    const double denorm, norm;
 
    const double N16;
 
 
    unsigned short* mixer[8];
    unsigned short* summer[5];
    unsigned short* gain[16];
 
    double dac[DAC_BITS];
 
 
    unsigned short vcr_kVg[1 << 16];
    unsigned short vcr_n_Ids_term[1 << 16];
 
    unsigned short opamp_rev[1 << 16];
 
private:
    double getDacZero(double adjustment) const { return dac_zero - (adjustment - 0.5) * 2.; }
 
    FilterModelConfig();
    ~FilterModelConfig();
 
public:
    static FilterModelConfig* getInstance();
 
    int getVoiceScaleS14() const { return static_cast<int>((norm * ((1 << 14) - 1)) * voice_voltage_range); }
 
    int getVoiceDC() const { return static_cast<int>(N16 * (voice_DC_voltage - vmin)); }
 
    unsigned short** getGain() { return gain; }
 
    unsigned short** getSummer() { return summer; }
 
    unsigned short** getMixer() { return mixer; }
 
    unsigned short* getDAC(double adjustment) const;
 
    std::auto_ptr<Integrator> buildIntegrator();
};
 
} // namespace reSIDfp
 
#endif