furnace/src/engine/platform/su.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.
*/
#ifndef _SU_H
#define _SU_H
#include "../dispatch.h"
#include <queue>
#include "../macroInt.h"
#include "sound/su.h"
class DivPlatformSoundUnit: public DivDispatch {
struct Channel {
int freq, baseFreq, pitch, note;
int ins, cutoff, res, control;
signed char pan;
unsigned char duty;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, noise, pcm;
signed char vol, outVol, wave;
DivMacroInt std;
Channel():
freq(0),
baseFreq(0),
pitch(0),
note(0),
ins(-1),
cutoff(65535),
res(0),
control(0),
pan(0),
duty(63),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
noise(false),
pcm(false),
vol(127),
outVol(127),
wave(-1) {}
};
Channel chan[8];
bool isMuted[8];
struct QueuedWrite {
unsigned char addr;
unsigned char val;
QueuedWrite(unsigned char a, unsigned char v): addr(a), val(v) {}
};
std::queue<QueuedWrite> writes;
unsigned char lastPan;
int cycles, curChan, delay;
short tempL;
short tempR;
unsigned char sampleBank, lfoMode, lfoSpeed;
SoundUnit* su;
unsigned char regPool[128];
void writeControl(int ch);
friend void putDispatchChan(void*,int,int);
public:
void acquire(short* bufL, short* bufR, size_t start, size_t len);
int dispatch(DivCommand c);
void* getChanState(int chan);
unsigned char* getRegisterPool();
int getRegisterPoolSize();
void reset();
void forceIns();
void tick(bool sysTick=true);
void muteChannel(int ch, bool mute);
bool isStereo();
bool keyOffAffectsArp(int ch);
void setFlags(unsigned int flags);
void notifyInsDeletion(void* ins);
void poke(unsigned int addr, unsigned short val);
void poke(std::vector<DivRegWrite>& wlist);
const char** getRegisterSheet();
const char* getEffectName(unsigned char effect);
int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
void quit();
~DivPlatformSoundUnit();
};
#endif