libsidplayfp 1.0.3
WaveformCalculator.h
00001 /*
00002  * This file is part of libsidplayfp, a SID player engine.
00003  *
00004  * Copyright 2011-2013 Leandro Nini <drfiemost@users.sourceforge.net>
00005  * Copyright 2007-2010 Antti Lankila
00006  * Copyright 2004 Dag Lem <resid@nimrod.no>
00007  *
00008  * This program is free software; you can redistribute it and/or modify
00009  * it under the terms of the GNU General Public License as published by
00010  * the Free Software Foundation; either version 2 of the License, or
00011  * (at your option) any later version.
00012  *
00013  * This program is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016  * GNU General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU General Public License
00019  * along with this program; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00021  */
00022 
00023 #ifndef WAVEFORMCALCULATOR_h
00024 #define WAVEFORMCALCULATOR_h
00025 
00026 #include <map>
00027 
00028 #include "siddefs-fp.h"
00029 #include "array.h"
00030 
00031 
00032 namespace reSIDfp
00033 {
00034 
00035 typedef struct
00036 {
00037     float bias;
00038     float pulsestrength;
00039     float topbit;
00040     float distance;
00041     float stmix;
00042 } CombinedWaveformConfig;
00043 
00049 class WaveformCalculator
00050 {
00051 private:
00052     std::map<const CombinedWaveformConfig*, array<short> > CACHE;
00053 
00054     static const CombinedWaveformConfig config[2][4];
00055 
00063     short calculateCombinedWaveform(CombinedWaveformConfig config, int waveform, int accumulator) const;
00064 
00065     WaveformCalculator() {}
00066 
00067 public:
00068     static WaveformCalculator* getInstance();
00069 
00076     array<short>* buildTable(ChipModel model);
00077 };
00078 
00079 } // namespace reSIDfp
00080 
00081 #endif