furnace/src/engine/platform/namcowsg.cpp

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2022-05-20 18:22:35 +00:00
/**
* 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.
*/
#include "namcowsg.h"
#include "../engine.h"
#include <math.h>
//#define rWrite(a,v) pendingWrites[a]=v;
#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define chWrite(c,a,v) \
if (!skipRegisterWrites) { \
if (curChan!=c) { \
curChan=c; \
rWrite(0,curChan); \
} \
regPool[16+((c)<<4)+((a)&0x0f)]=v; \
rWrite(a,v); \
}
#define CHIP_DIVIDER 32
const char* regCheatSheetNamcoWSG[]={
"Select", "0",
"MasterVol", "1",
"FreqL", "2",
"FreqH", "3",
"DataCtl", "4",
"ChanVol", "5",
"WaveCtl", "6",
"NoiseCtl", "7",
"LFOFreq", "8",
"LFOCtl", "9",
NULL
};
const char** DivPlatformNamcoWSG::getRegisterSheet() {
return regCheatSheetNamcoWSG;
}
const char* DivPlatformNamcoWSG::getEffectName(unsigned char effect) {
switch (effect) {
case 0x10:
return "10xx: Change waveform";
break;
case 0x11:
return "11xx: Toggle noise mode";
break;
}
return NULL;
}
void DivPlatformNamcoWSG::acquire(short* bufL, short* bufR, size_t start, size_t len) {
short* buf[2]={
bufL+start, bufR+start
};
while (!writes.empty()) {
QueuedWrite w=writes.front();
switch (devType) {
case 1:
((namco_device*)namco)->pacman_sound_w(w.addr,w.val);
break;
case 2:
((namco_device*)namco)->polepos_sound_w(w.addr,w.val);
break;
case 15:
((namco_15xx_device*)namco)->sharedram_w(w.addr,w.val);
break;
case 30:
((namco_cus30_device*)namco)->namcos1_cus30_w(w.addr,w.val);
break;
}
regPool[w.addr]=w.val;
writes.pop();
}
namco->sound_stream_update(buf,len);
}
void DivPlatformNamcoWSG::updateWave(int ch) {
chWrite(ch,0x04,0x5f);
chWrite(ch,0x04,0x1f);
for (int i=0; i<32; i++) {
chWrite(ch,0x06,chan[ch].ws.output[i]);
}
if (chan[ch].active) {
chWrite(ch,0x04,0x80|chan[ch].outVol);
}
}
void DivPlatformNamcoWSG::tick(bool sysTick) {
for (int i=0; i<chans; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=((chan[i].vol&15)*MIN(15,chan[i].std.vol.val))>>4;
chWrite(i,0x04,0x80|chan[i].outVol);
}
if (chan[i].std.duty.had && i>=4) {
chan[i].noise=chan[i].std.duty.val;
chan[i].freqChanged=true;
}
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
if (chan[i].std.arp.mode) {
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp.val);
} else {
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp.val);
}
}
chan[i].freqChanged=true;
} else {
if (chan[i].std.arp.mode && chan[i].std.arp.finished) {
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
chan[i].freqChanged=true;
}
}
if (chan[i].std.wave.had) {
if (chan[i].wave!=chan[i].std.wave.val || chan[i].ws.activeChanged()) {
chan[i].wave=chan[i].std.wave.val;
chan[i].ws.changeWave1(chan[i].wave);
if (!chan[i].keyOff) chan[i].keyOn=true;
}
}
if (chan[i].std.panL.had) {
chan[i].pan&=0x0f;
chan[i].pan|=(chan[i].std.panL.val&15)<<4;
}
if (chan[i].std.panR.had) {
chan[i].pan&=0xf0;
chan[i].pan|=chan[i].std.panR.val&15;
}
if (chan[i].std.panL.had || chan[i].std.panR.had) {
chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
}
if (chan[i].std.pitch.had) {
if (chan[i].std.pitch.mode) {
chan[i].pitch2+=chan[i].std.pitch.val;
CLAMP_VAR(chan[i].pitch2,-2048,2048);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
if (chan[i].active) {
if (chan[i].ws.tick() || (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1)) {
updateWave(i);
}
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
if (chan[i].freq>4095) chan[i].freq=4095;
chWrite(i,0x02,chan[i].freq&0xff);
chWrite(i,0x03,chan[i].freq>>8);
if (chan[i].keyOn) {
//rWrite(16+i*5,0x80);
//chWrite(i,0x04,0x80|chan[i].vol);
}
if (chan[i].keyOff) {
chWrite(i,0x04,0);
}
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
chan[i].freqChanged=false;
}
}
}
int DivPlatformNamcoWSG::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_PCE);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
chWrite(c.chan,0x04,0x80|chan[c.chan].vol);
chan[c.chan].macroInit(ins);
if (chan[c.chan].wave<0) {
chan[c.chan].wave=0;
chan[c.chan].ws.changeWave1(chan[c.chan].wave);
}
chan[c.chan].ws.init(ins,32,15,chan[c.chan].insChanged);
chan[c.chan].insChanged=false;
break;
}
case DIV_CMD_NOTE_OFF:
chan[c.chan].active=false;
chan[c.chan].keyOff=true;
chan[c.chan].macroInit(NULL);
break;
case DIV_CMD_NOTE_OFF_ENV:
case DIV_CMD_ENV_RELEASE:
chan[c.chan].std.release();
break;
case DIV_CMD_INSTRUMENT:
if (chan[c.chan].ins!=c.value || c.value2==1) {
chan[c.chan].ins=c.value;
chan[c.chan].insChanged=true;
}
break;
case DIV_CMD_VOLUME:
if (chan[c.chan].vol!=c.value) {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
if (chan[c.chan].active) chWrite(c.chan,0x04,0x80|chan[c.chan].outVol);
}
}
break;
case DIV_CMD_GET_VOLUME:
if (chan[c.chan].std.vol.has) {
return chan[c.chan].vol;
}
return chan[c.chan].outVol;
break;
case DIV_CMD_PITCH:
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_WAVE:
chan[c.chan].wave=c.value;
chan[c.chan].ws.changeWave1(chan[c.chan].wave);
chan[c.chan].keyOn=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=NOTE_PERIODIC(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value;
if (chan[c.chan].baseFreq<=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
}
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
case DIV_CMD_STD_NOISE_MODE:
chan[c.chan].noise=c.value;
chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|chan[c.chan].note):0);
break;
case DIV_CMD_PANNING: {
chan[c.chan].pan=(c.value&0xf0)|(c.value2>>4);
chWrite(c.chan,0x05,isMuted[c.chan]?0:chan[c.chan].pan);
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
break;
case DIV_CMD_PRE_PORTA:
if (chan[c.chan].active && c.value2) {
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
}
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_GET_VOLMAX:
return 15;
break;
case DIV_ALWAYS_SET_VOLUME:
return 1;
break;
default:
break;
}
return 1;
}
void DivPlatformNamcoWSG::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
chWrite(ch,0x05,isMuted[ch]?0:chan[ch].pan);
}
void DivPlatformNamcoWSG::forceIns() {
for (int i=0; i<chans; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
updateWave(i);
chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
}
}
void* DivPlatformNamcoWSG::getChanState(int ch) {
return &chan[ch];
}
DivDispatchOscBuffer* DivPlatformNamcoWSG::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformNamcoWSG::getRegisterPool() {
return regPool;
}
int DivPlatformNamcoWSG::getRegisterPoolSize() {
return 112;
}
void DivPlatformNamcoWSG::reset() {
while (!writes.empty()) writes.pop();
memset(regPool,0,128);
for (int i=0; i<chans; i++) {
chan[i]=DivPlatformNamcoWSG::Channel();
chan[i].std.setEngine(parent);
chan[i].ws.setEngine(parent);
chan[i].ws.init(NULL,32,15,false);
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
// TODO: wave memory
namco->device_start(NULL);
lastPan=0xff;
cycles=0;
curChan=-1;
}
bool DivPlatformNamcoWSG::isStereo() {
return (devType==30);
}
bool DivPlatformNamcoWSG::keyOffAffectsArp(int ch) {
return true;
}
void DivPlatformNamcoWSG::notifyWaveChange(int wave) {
for (int i=0; i<chans; i++) {
if (chan[i].wave==wave) {
chan[i].ws.changeWave1(wave);
updateWave(i);
}
}
}
void DivPlatformNamcoWSG::notifyInsDeletion(void* ins) {
for (int i=0; i<chans; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformNamcoWSG::setDeviceType(int type) {
devType=type;
switch (type) {
case 15:
case 30:
chans=8;
break;
default:
chans=3;
break;
}
}
void DivPlatformNamcoWSG::setFlags(unsigned int flags) {
chipClock=3072000;
rate=chipClock/16;
namco->device_clock_changed(rate);
for (int i=0; i<chans; i++) {
oscBuf[i]->rate=rate;
}
}
void DivPlatformNamcoWSG::poke(unsigned int addr, unsigned short val) {
rWrite(addr,val);
}
void DivPlatformNamcoWSG::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
}
int DivPlatformNamcoWSG::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<chans; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
switch (devType) {
case 15:
namco=new namco_15xx_device(3072000);
break;
case 30:
namco=new namco_cus30_device(3072000);
break;
default:
namco=new namco_device(3072000);
break;
}
setFlags(flags);
reset();
return 6;
}
void DivPlatformNamcoWSG::quit() {
for (int i=0; i<chans; i++) {
delete oscBuf[i];
}
delete namco;
}
DivPlatformNamcoWSG::~DivPlatformNamcoWSG() {
}