FilterModelConfig.h
/*
* This file is part of libsidplayfp, a SID player engine.
*
* Copyright 2011-2013 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 FILTERMODELCONFIG_H
#define FILTERMODELCONFIG_H
#include <memory>
namespace reSIDfp
{
class Integrator;
class FilterModelConfig
{
private:
static const unsigned int OPAMP_SIZE = 22;
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 double opamp_voltage[OPAMP_SIZE][2];
const double voice_voltage_range;
const double voice_DC_voltage;
// Capacitor value.
const double C;
// Transistor parameters.
const double Vdd;
const double Vth; // Threshold voltage
const double uCox_vcr; // 1/2*u*Cox
const double WL_vcr; // W/L for VCR
const double uCox_snake; // 1/2*u*Cox
const double WL_snake; // W/L for "snake"
// DAC parameters.
const double dac_zero;
const double dac_scale;
/* Derived stuff */
const double vmin, norm;
double opamp_working_point;
unsigned short* mixer[8];
unsigned short* summer[5];
unsigned short* gain[16];
double dac[DAC_BITS];
unsigned short vcr_Vg[1 << 16];
unsigned short vcr_n_Ids_term[1 << 16];
int opamp_rev[1 << 16];
private:
double evaluateTransistor(double Vw, double vi, double vx);
double getDacZero(double adjustment) const { return dac_zero - (adjustment - 0.5) * 2.; }
FilterModelConfig();
~FilterModelConfig();
public:
static FilterModelConfig* getInstance();
int getVO_T16() const { return (int)(norm * ((1L << 16) - 1) * vmin); }
int getVoiceScaleS14() const { return (int)((norm * ((1L << 14) - 1)) * voice_voltage_range); }
int getVoiceDC() const { return (int)((norm * ((1L << 16) - 1)) * (voice_DC_voltage - vmin)); }
unsigned short** getGain() { return gain; }
unsigned short** getSummer() { return summer; }
unsigned short** getMixer() { return mixer; }
unsigned int* getDAC(double adjustment) const;
Integrator* buildIntegrator();
double estimateFrequency(double dac_zero, int fc);
};
} // namespace reSIDfp
#endif
reSIDfp::Integrator
Definition: Integrator.h:42
reSIDfp::FilterModelConfig
Definition: FilterModelConfig.h:34
reSIDfp::FilterModelConfig::getDAC
unsigned int * getDAC(double adjustment) const
Definition: FilterModelConfig.cpp:265
reSIDfp::FilterModelConfig::estimateFrequency
double estimateFrequency(double dac_zero, int fc)
Definition: FilterModelConfig.cpp:298