furnace/src/engine/platform/pce.h
2022-04-15 15:01:11 -05:00

106 lines
3 KiB
C++

/**
* 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 _PCE_H
#define _PCE_H
#include "../dispatch.h"
#include <queue>
#include "../macroInt.h"
#include "../waveSynth.h"
#include "sound/pce_psg.h"
class DivPlatformPCE: public DivDispatch {
struct Channel {
int freq, baseFreq, pitch, note;
int dacPeriod, dacRate;
unsigned int dacPos;
int dacSample;
unsigned char ins, pan;
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, noise, pcm, furnaceDac;
signed char vol, outVol, wave;
DivMacroInt std;
DivWaveSynth ws;
Channel():
freq(0),
baseFreq(0),
pitch(0),
note(0),
dacPeriod(0),
dacRate(0),
dacPos(0),
dacSample(-1),
ins(-1),
pan(255),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
noise(false),
pcm(false),
furnaceDac(false),
vol(31),
outVol(31),
wave(-1) {}
};
Channel chan[6];
bool isMuted[6];
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;
int tempL[32];
int tempR[32];
unsigned char sampleBank, lfoMode, lfoSpeed;
PCE_PSG* pce;
unsigned char regPool[128];
void updateWave(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 notifyWaveChange(int wave);
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();
~DivPlatformPCE();
};
#endif