furnace/src/engine/platform/sms.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 _SMS_H
#define _SMS_H
#include "../dispatch.h"
#include "../macroInt.h"
#include "sound/sn76496.h"
class DivPlatformSMS: public DivDispatch {
struct Channel {
int freq, baseFreq, pitch, note, actualNote;
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unsigned char ins;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta;
signed char vol, outVol;
DivMacroInt std;
Channel():
freq(0),
baseFreq(0),
pitch(0),
note(0),
actualNote(0),
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ins(-1),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
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vol(15),
outVol(15) {}
};
Channel chan[4];
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bool isMuted[4];
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unsigned char oldValue;
unsigned char snNoiseMode;
bool updateSNMode;
bool resetPhase;
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bool isRealSN;
sn76496_base_device* sn;
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friend void putDispatchChan(void*,int,int);
public:
int acquireOne();
void acquire(short* bufL, short* bufR, size_t start, size_t len);
int dispatch(DivCommand c);
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void* getChanState(int chan);
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void reset();
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void forceIns();
void tick();
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void muteChannel(int ch, bool mute);
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bool keyOffAffectsArp(int ch);
bool keyOffAffectsPorta(int ch);
int getPortaFloor(int ch);
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void setFlags(unsigned int flags);
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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const char* getEffectName(unsigned char effect);
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int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
void quit();
~DivPlatformSMS();
};
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#endif