furnace/src/engine/platform/gb.h
2024-01-16 21:26:57 -05:00

110 lines
3.3 KiB
C++

/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2024 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 _GB_H
#define _GB_H
#include "../dispatch.h"
#include "../waveSynth.h"
#include "sound/gb/gb.h"
#include "../../fixedQueue.h"
class DivPlatformGB: public DivDispatch {
struct Channel: public SharedChannel<signed char> {
unsigned char duty, sweep;
bool sweepChanged, released, softEnv, killIt;
bool soManyHacksToMakeItDefleCompatible;
signed short wave;
signed char lastKill;
unsigned char envVol, envDir, envLen, soundLen;
unsigned short hwSeqPos;
short hwSeqDelay;
Channel():
SharedChannel<signed char>(15),
duty(0),
sweep(0),
sweepChanged(false),
released(false),
softEnv(false),
killIt(false),
soManyHacksToMakeItDefleCompatible(false),
wave(-1),
lastKill(0),
envVol(0),
envDir(0),
envLen(0),
soundLen(0),
hwSeqPos(0),
hwSeqDelay(0) {}
};
Channel chan[4];
DivDispatchOscBuffer* oscBuf[4];
bool isMuted[4];
bool antiClickEnabled;
bool invertWave;
bool enoughAlready;
unsigned char lastPan;
DivWaveSynth ws;
struct QueuedWrite {
unsigned char addr;
unsigned char val;
QueuedWrite(): addr(0), val(0) {}
QueuedWrite(unsigned char a, unsigned char v): addr(a), val(v) {}
};
FixedQueue<QueuedWrite,256> writes;
int antiClickPeriodCount, antiClickWavePos;
GB_gameboy_t* gb;
GB_model_t model;
unsigned char regPool[128];
unsigned char procMute();
void updateWave();
friend void putDispatchChip(void*,int);
friend void putDispatchChan(void*,int,int);
public:
void acquire(short** buf, size_t len);
int dispatch(DivCommand c);
void* getChanState(int chan);
DivMacroInt* getChanMacroInt(int ch);
unsigned short getPan(int chan);
DivDispatchOscBuffer* getOscBuffer(int chan);
unsigned char* getRegisterPool();
int getRegisterPoolSize();
void reset();
void forceIns();
void tick(bool sysTick=true);
void muteChannel(int ch, bool mute);
int getPortaFloor(int ch);
int getOutputCount();
bool getDCOffRequired();
void notifyInsChange(int ins);
void notifyWaveChange(int wave);
void notifyInsDeletion(void* ins);
void poke(unsigned int addr, unsigned short val);
void poke(std::vector<DivRegWrite>& wlist);
const char** getRegisterSheet();
void setFlags(const DivConfig& flags);
int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags);
void quit();
~DivPlatformGB();
};
#endif