furnace/src/engine/platform/c64.h

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2022 tildearrow and contributors
*
* 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.
*/
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#ifndef _C64_H
#define _C64_H
#include "../dispatch.h"
#include "../macroInt.h"
#include "sound/c64/sid.h"
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#include "sound/c64_fp/SID.h"
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class DivPlatformC64: public DivDispatch {
struct Channel {
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int freq, baseFreq, pitch, pitch2, prevFreq, testWhen, note, ins;
unsigned char sweep, wave, attack, decay, sustain, release;
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short duty;
bool active, insChanged, freqChanged, sweepChanged, keyOn, keyOff, inPorta, filter;
bool resetMask, resetFilter, resetDuty, ring, sync, test;
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signed char vol, outVol;
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DivMacroInt std;
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void macroInit(DivInstrument* which) {
std.init(which);
pitch2=0;
}
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Channel():
freq(0),
baseFreq(0),
pitch(0),
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pitch2(0),
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prevFreq(65535),
testWhen(0),
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note(0),
ins(-1),
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sweep(0),
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wave(0),
attack(0),
decay(0),
sustain(0),
release(0),
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duty(0),
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active(false),
insChanged(true),
freqChanged(false),
sweepChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
filter(false),
resetMask(false),
resetFilter(false),
resetDuty(false),
ring(false),
sync(false),
test(false),
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vol(15) {}
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};
Channel chan[3];
DivDispatchOscBuffer* oscBuf[3];
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bool isMuted[3];
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unsigned char filtControl, filtRes, vol;
unsigned char writeOscBuf;
int filtCut, resetTime;
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bool isFP;
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SID sid;
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reSIDfp::SID sid_fp;
unsigned char regPool[32];
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friend void putDispatchChan(void*,int,int);
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void acquire_classic(short* bufL, short* bufR, size_t start, size_t len);
void acquire_fp(short* bufL, short* bufR, size_t start, size_t len);
void updateFilter();
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public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);
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int dispatch(DivCommand c);
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void* getChanState(int chan);
DivDispatchOscBuffer* getOscBuffer(int chan);
unsigned char* getRegisterPool();
int getRegisterPoolSize();
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void reset();
void forceIns();
void tick(bool sysTick=true);
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void muteChannel(int ch, bool mute);
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void setFlags(unsigned int flags);
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void notifyInsChange(int ins);
bool getDCOffRequired();
bool getWantPreNote();
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float getPostAmp();
DivMacroInt* getChanMacroInt(int ch);
void notifyInsDeletion(void* ins);
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void poke(unsigned int addr, unsigned short val);
void poke(std::vector<DivRegWrite>& wlist);
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const char** getRegisterSheet();
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int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
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void setChipModel(bool is6581);
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void setFP(bool fp);
void quit();
~DivPlatformC64();
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};
#endif