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furnace/src/engine/platform/opll.cpp

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/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2023 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 "opll.h"
#include "../engine.h"
#include "../../ta-log.h"
#include <string.h>
#include <math.h>
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.push(QueuedWrite(a,v)); if (dumpWrites) {addWrite(a,v);} }
#define CHIP_FREQBASE 1180068
const unsigned char cycleMapOPLL[18]={
8, 7, 6, 7, 8, 7, 8, 6, 0, 1, 2, 7, 8, 9, 3, 4, 5, 9
};
const unsigned char drumSlot[11]={
0, 0, 0, 0, 0, 0, 6, 7, 8, 8, 7
};
const unsigned char visMapOPLL[9]={
6, 7, 8, 3, 4, 5, 0, 1, 2
};
void DivPlatformOPLL::acquire_nuked(short** buf, size_t len) {
static int o[2];
static int os;
for (size_t h=0; h<len; h++) {
os=0;
for (int i=0; i<9; i++) {
if (!writes.empty() && --delay<0) {
// 84 is safe value
QueuedWrite& w=writes.front();
if (w.addrOrVal) {
OPLL_Write(&fm,1,w.val);
//printf("write: %x = %.2x\n",w.addr,w.val);
regPool[w.addr&0xff]=w.val;
writes.pop();
delay=21;
} else {
//printf("busycounter: %d\n",lastBusy);
OPLL_Write(&fm,0,w.addr);
w.addrOrVal=true;
delay=3;
}
}
OPLL_Clock(&fm,o);
unsigned char nextOut=cycleMapOPLL[fm.cycles];
if ((nextOut>=6 && properDrums) || !isMuted[nextOut]) {
os+=(o[0]+o[1]);
if (vrc7 || (fm.rm_enable&0x20)) oscBuf[nextOut]->data[oscBuf[nextOut]->needle++]=(o[0]+o[1])<<6;
} else {
if (vrc7 || (fm.rm_enable&0x20)) oscBuf[nextOut]->data[oscBuf[nextOut]->needle++]=0;
}
}
if (!(vrc7 || (fm.rm_enable&0x20))) for (int i=0; i<9; i++) {
unsigned char ch=visMapOPLL[i];
if ((i>=6 && properDrums) || !isMuted[ch]) {
oscBuf[ch]->data[oscBuf[ch]->needle++]=(fm.output_ch[i])<<6;
} else {
oscBuf[ch]->data[oscBuf[ch]->needle++]=0;
}
}
os*=50;
if (os<-32768) os=-32768;
if (os>32767) os=32767;
buf[0][h]=os;
}
}
void DivPlatformOPLL::acquire_ymfm(short** buf, size_t len) {
}
void DivPlatformOPLL::acquire(short** buf, size_t len) {
acquire_nuked(buf,len);
}
void DivPlatformOPLL::tick(bool sysTick) {
for (int i=0; i<11; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].vol,MIN(15,chan[i].std.vol.val),15);
if (i>=6 && properDrums) {
drumVol[i-6]=15-chan[i].outVol;
rWrite(0x36,drumVol[0]);
rWrite(0x37,drumVol[1]|(drumVol[4]<<4));
rWrite(0x38,drumVol[3]|(drumVol[2]<<4));
} else if (i<6 || !drums) {
if (i<9) {
rWrite(0x30+i,((15-VOL_SCALE_LOG_BROKEN(chan[i].outVol,15-chan[i].state.op[1].tl,15))&15)|(chan[i].state.opllPreset<<4));
}
}
}
if (NEW_ARP_STRAT) {
chan[i].handleArp();
} else if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=NOTE_FREQUENCY(parent->calcArp(chan[i].note,chan[i].std.arp.val));
}
chan[i].freqChanged=true;
}
if (chan[i].std.wave.had && chan[i].state.opllPreset!=16) {
chan[i].state.opllPreset=chan[i].std.wave.val;
if (i<9) {
rWrite(0x30+i,((15-VOL_SCALE_LOG_BROKEN(chan[i].outVol,15-chan[i].state.op[1].tl,15))&15)|(chan[i].state.opllPreset<<4));
}
}
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,-65535,65535);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
if (chan[i].std.phaseReset.had) {
if (chan[i].std.phaseReset.val==1 && chan[i].active) {
chan[i].keyOn=true;
}
}
if (chan[i].state.opllPreset==0) {
if (chan[i].std.alg.had) { // SUS
chan[i].state.alg=chan[i].std.alg.val;
chan[i].freqChanged=true;
}
if (chan[i].std.fb.had) {
chan[i].state.fb=chan[i].std.fb.val;
rWrite(0x03,(chan[i].state.op[1].ksl<<6)|((chan[i].state.fms&1)<<4)|((chan[i].state.ams&1)<<3)|chan[i].state.fb);
}
if (chan[i].std.fms.had) {
chan[i].state.fms=chan[i].std.fms.val;
rWrite(0x03,(chan[i].state.op[1].ksl<<6)|((chan[i].state.fms&1)<<4)|((chan[i].state.ams&1)<<3)|chan[i].state.fb);
}
if (chan[i].std.ams.had) {
chan[i].state.ams=chan[i].std.ams.val;
rWrite(0x03,(chan[i].state.op[1].ksl<<6)|((chan[i].state.fms&1)<<4)|((chan[i].state.ams&1)<<3)|chan[i].state.fb);
}
for (int j=0; j<2; j++) {
DivInstrumentFM::Operator& op=chan[i].state.op[j];
DivMacroInt::IntOp& m=chan[i].std.op[j];
if (m.am.had) {
op.am=m.am.val;
rWrite(0x00+j,(op.am<<7)|(op.vib<<6)|((op.ssgEnv&8)<<2)|(op.ksr<<4)|(op.mult));
}
if (m.ar.had) {
op.ar=m.ar.val;
rWrite(0x04+j,(op.ar<<4)|(op.dr));
}
if (m.dr.had) {
op.dr=m.dr.val;
rWrite(0x04+j,(op.ar<<4)|(op.dr));
}
if (m.mult.had) {
op.mult=m.mult.val;
rWrite(0x00+j,(op.am<<7)|(op.vib<<6)|((op.ssgEnv&8)<<2)|(op.ksr<<4)|(op.mult));
}
if (m.rr.had) {
op.rr=m.rr.val;
rWrite(0x06+j,(op.sl<<4)|(op.rr));
}
if (m.sl.had) {
op.sl=m.sl.val;
rWrite(0x06+j,(op.sl<<4)|(op.rr));
}
if (m.tl.had) {
op.tl=((j==1)?15:63)-m.tl.val;
if (j==1) {
if (i<9) {
rWrite(0x30+i,((15-VOL_SCALE_LOG_BROKEN(chan[i].outVol,15-chan[i].state.op[1].tl,15))&15)|(chan[i].state.opllPreset<<4));
}
} else {
rWrite(0x02,(chan[i].state.op[0].ksl<<6)|(op.tl&63));
}
}
if (m.egt.had) {
op.ssgEnv=(m.egt.val&1)?8:0;
rWrite(0x00+j,(op.am<<7)|(op.vib<<6)|((op.ssgEnv&8)<<2)|(op.ksr<<4)|(op.mult));
}
if (m.ksl.had) {
op.ksl=m.ksl.val;
if (j==1) {
rWrite(0x02,(chan[i].state.op[0].ksl<<6)|(chan[i].state.op[0].tl&63));
} else {
rWrite(0x03,(chan[i].state.op[1].ksl<<6)|((chan[i].state.fms&1)<<4)|((chan[i].state.ams&1)<<3)|chan[i].state.fb);
}
}
if (m.ksr.had) {
op.ksr=m.ksr.val;
rWrite(0x00+j,(op.am<<7)|(op.vib<<6)|((op.ssgEnv&8)<<2)|(op.ksr<<4)|(op.mult));
}
if (m.vib.had) {
op.vib=m.vib.val;
rWrite(0x00+j,(op.am<<7)|(op.vib<<6)|((op.ssgEnv&8)<<2)|(op.ksr<<4)|(op.mult));
}
}
}
if (chan[i].keyOn || chan[i].keyOff) {
if (i>=6 && properDrums) {
drumState&=~(0x10>>(i-6));
immWrite(0x0e,0x20|drumState);
} else if (i>=6 && drums) {
drumState&=~(0x10>>(chan[i].note%12));
immWrite(0x0e,0x20|drumState);
} else {
if (i<9) {
immWrite(0x20+i,(chan[i].freqH)|(chan[i].state.alg?0x20:0));
}
}
//chan[i].keyOn=false;
chan[i].keyOff=false;
}
}
for (int i=0; i<256; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
for (int i=0; i<11; i++) {
if (chan[i].freqChanged) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,false,octave(chan[i].baseFreq)*2,chan[i].pitch2,chipClock,CHIP_FREQBASE);
if (chan[i].fixedFreq>0) chan[i].freq=chan[i].fixedFreq;
if (chan[i].freq<0) chan[i].freq=0;
if (chan[i].freq>65535) chan[i].freq=65535;
int freqt=toFreq(chan[i].freq);
if (freqt>4095) freqt=4095;
chan[i].freqL=freqt&0xff;
if (i>=6 && properDrums && (i<9 || !noTopHatFreq)) {
immWrite(0x10+drumSlot[i],freqt&0xff);
immWrite(0x20+drumSlot[i],freqt>>8);
} else if (i<6 || !drums) {
if (i<9) {
immWrite(0x10+i,freqt&0xff);
}
}
chan[i].freqH=(freqt>>8)&15;
}
if (chan[i].keyOn && i>=6 && properDrums) {
if (!isMuted[i]) {
drumState|=(0x10>>(i-6));
immWrite(0x0e,0x20|drumState);
}
chan[i].keyOn=false;
} else if (chan[i].keyOn && i>=6 && drums) {
//printf("%d\n",chan[i].note%12);
drumState|=(0x10>>(chan[i].note%12));
immWrite(0x0e,0x20|drumState);
chan[i].keyOn=false;
} else if ((chan[i].keyOn || chan[i].freqChanged) && i<9) {
//immWrite(0x28,0xf0|konOffs[i]);
if (!(i>=6 && properDrums)) {
if (i<9) {
immWrite(0x20+i,(chan[i].freqH)|(chan[i].active<<4)|(chan[i].state.alg?0x20:0));
}
}
chan[i].keyOn=false;
}
chan[i].freqChanged=false;
}
}
#define OPLL_C_NUM 343
int DivPlatformOPLL::octave(int freq) {
if (freq>=OPLL_C_NUM*64) {
return 128;
} else if (freq>=OPLL_C_NUM*32) {
return 64;
} else if (freq>=OPLL_C_NUM*16) {
return 32;
} else if (freq>=OPLL_C_NUM*8) {
return 16;
} else if (freq>=OPLL_C_NUM*4) {
return 8;
} else if (freq>=OPLL_C_NUM*2) {
return 4;
} else if (freq>=OPLL_C_NUM) {
return 2;
} else {
return 1;
}
return 1;
}
int DivPlatformOPLL::toFreq(int freq) {
if (freq>=OPLL_C_NUM*64) {
return 0xe00|((freq>>7)&0x1ff);
} else if (freq>=OPLL_C_NUM*32) {
return 0xc00|((freq>>6)&0x1ff);
} else if (freq>=OPLL_C_NUM*16) {
return 0xa00|((freq>>5)&0x1ff);
} else if (freq>=OPLL_C_NUM*8) {
return 0x800|((freq>>4)&0x1ff);
} else if (freq>=OPLL_C_NUM*4) {
return 0x600|((freq>>3)&0x1ff);
} else if (freq>=OPLL_C_NUM*2) {
return 0x400|((freq>>2)&0x1ff);
} else if (freq>=OPLL_C_NUM) {
return 0x200|((freq>>1)&0x1ff);
} else {
return freq&0x1ff;
}
}
void DivPlatformOPLL::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
}
void DivPlatformOPLL::commitState(int ch, DivInstrument* ins) {
if (chan[ch].insChanged) {
chan[ch].state=ins->fm;
}
if (chan[ch].insChanged) {
// update custom preset
if (chan[ch].state.opllPreset==0) {
DivInstrumentFM::Operator& mod=chan[ch].state.op[0];
DivInstrumentFM::Operator& car=chan[ch].state.op[1];
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
rWrite(0x02,(mod.ksl<<6)|(mod.tl&63));
rWrite(0x03,(car.ksl<<6)|((chan[ch].state.fms&1)<<4)|((chan[ch].state.ams&1)<<3)|chan[ch].state.fb);
rWrite(0x04,(mod.ar<<4)|(mod.dr));
rWrite(0x05,(car.ar<<4)|(car.dr));
rWrite(0x06,(mod.sl<<4)|(mod.rr));
rWrite(0x07,(car.sl<<4)|(car.rr));
lastCustomMemory=ch;
}
if (chan[ch].state.opllPreset==16) { // compatible drums mode
if (ch>=6) {
drums=true;
immWrite(0x16,0x20);
immWrite(0x26,0x05);
immWrite(0x16,0x20);
immWrite(0x26,0x05);
immWrite(0x17,0x50);
immWrite(0x27,0x05);
immWrite(0x17,0x50);
immWrite(0x27,0x05);
immWrite(0x18,0xC0);
immWrite(0x28,0x01);
}
} else {
if (ch>=6) {
if (drums) {
drums=false;
immWrite(0x0e,0);
drumState=0;
}
}
if (ch<9) {
rWrite(0x30+ch,((15-VOL_SCALE_LOG_BROKEN(chan[ch].outVol,15-chan[ch].state.op[1].tl,15))&15)|(chan[ch].state.opllPreset<<4));
}
}
}
}
int DivPlatformOPLL::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_OPLL);
if (chan[c.chan].insChanged) {
chan[c.chan].state=ins->fm;
}
chan[c.chan].macroInit(ins);
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
if (c.chan>=6 && properDrums) { // drums mode
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
if (chan[c.chan].state.opllPreset==16 && chan[c.chan].state.fixedDrums) {
switch (c.chan) {
case 6:
chan[c.chan].fixedFreq=(chan[c.chan].state.kickFreq&511)<<(chan[c.chan].state.kickFreq>>9);
break;
case 7: case 10:
chan[c.chan].fixedFreq=(chan[c.chan].state.snareHatFreq&511)<<(chan[c.chan].state.snareHatFreq>>9);
break;
case 8: case 9:
chan[c.chan].fixedFreq=(chan[c.chan].state.tomTopFreq&511)<<(chan[c.chan].state.tomTopFreq>>9);
break;
}
} else {
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
}
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
chan[c.chan].active=true;
break;
}
commitState(c.chan,ins);
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
if (c.chan>=6 && drums) {
switch (chan[c.chan].note%12) {
case 0: // kick
drumVol[0]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
case 1: // snare
drumVol[1]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
case 2: // tom
drumVol[2]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
case 3: // top
drumVol[3]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
default: // hi-hat
drumVol[4]=(15-(chan[c.chan].outVol*(15-chan[c.chan].state.op[1].tl))/15);
break;
}
rWrite(0x36,drumVol[0]);
rWrite(0x37,drumVol[1]|(drumVol[4]<<4));
rWrite(0x38,drumVol[3]|(drumVol[2]<<4));
}
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
chan[c.chan].active=true;
break;
}
case DIV_CMD_NOTE_OFF:
if (c.chan>=9 && !properDrums) return 0;
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].freqChanged=true;
chan[c.chan].active=false;
break;
case DIV_CMD_NOTE_OFF_ENV:
if (c.chan>=9 && !properDrums) return 0;
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].freqChanged=true;
chan[c.chan].active=false;
chan[c.chan].std.release();
break;
case DIV_CMD_ENV_RELEASE:
if (c.chan>=9 && !properDrums) return 0;
chan[c.chan].std.release();
break;
case DIV_CMD_VOLUME: {
if (c.chan>=9 && !properDrums) return 0;
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
}
if (c.chan>=6 && properDrums) {
drumVol[c.chan-6]=15-chan[c.chan].outVol;
rWrite(0x36,drumVol[0]);
rWrite(0x37,drumVol[1]|(drumVol[4]<<4));
rWrite(0x38,drumVol[3]|(drumVol[2]<<4));
break;
} else if (c.chan<6 || !drums) {
if (c.chan<9) {
rWrite(0x30+c.chan,((15-VOL_SCALE_LOG_BROKEN(chan[c.chan].outVol,15-chan[c.chan].state.op[1].tl,15))&15)|(chan[c.chan].state.opllPreset<<4));
}
}
break;
}
case DIV_CMD_GET_VOLUME: {
return chan[c.chan].vol;
break;
}
case DIV_CMD_INSTRUMENT:
if (chan[c.chan].ins!=c.value || c.value2==1) {
chan[c.chan].insChanged=true;
}
chan[c.chan].ins=c.value;
break;
case DIV_CMD_PITCH: {
if (c.chan>=9 && !properDrums) return 0;
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_NOTE_PORTA: {
if (c.chan>=9 && !properDrums) return 0;
int destFreq=NOTE_FREQUENCY(c.value2);
int newFreq;
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
newFreq=chan[c.chan].baseFreq+c.value*((parent->song.linearPitch==2)?1:octave(chan[c.chan].baseFreq));
if (newFreq>=destFreq) {
newFreq=destFreq;
return2=true;
}
} else {
newFreq=chan[c.chan].baseFreq-c.value*((parent->song.linearPitch==2)?1:octave(chan[c.chan].baseFreq));
if (newFreq<=destFreq) {
newFreq=destFreq;
return2=true;
}
}
/*if (!chan[c.chan].portaPause) {
if (octave(chan[c.chan].baseFreq)!=octave(newFreq)) {
chan[c.chan].portaPause=true;
break;
}
}*/
chan[c.chan].baseFreq=newFreq;
chan[c.chan].portaPause=false;
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
case DIV_CMD_LEGATO: {
if (c.chan>=9 && !properDrums) return 0;
if (c.chan<6 || (!drums && !properDrums)) {
if (chan[c.chan].insChanged) {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_OPLL);
commitState(c.chan,ins);
chan[c.chan].insChanged=false;
}
}
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_FM_FB: {
if (c.chan>=9 && !properDrums) return 0;
//DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
chan[c.chan].state.fb=c.value&7;
rWrite(0x03,(car.ksl<<6)|((chan[c.chan].state.fms&1)<<4)|((chan[c.chan].state.ams&1)<<3)|chan[c.chan].state.fb);
break;
}
case DIV_CMD_FM_MULT: {
if (c.chan>=9 && !properDrums) return 0;
if (c.value==0) {
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
mod.mult=c.value2&15;
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
} else {
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
car.mult=c.value2&15;
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
}
break;
}
case DIV_CMD_FM_TL: {
if (c.chan>=9 && !properDrums) return 0;
if (c.value==0) {
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
//DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
mod.tl=c.value2&63;
rWrite(0x02,(mod.ksl<<6)|(mod.tl&63));
} else {
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
car.tl=c.value2&15;
if (c.chan<9) {
rWrite(0x30+c.chan,((15-VOL_SCALE_LOG_BROKEN(chan[c.chan].outVol,15-chan[c.chan].state.op[1].tl,15))&15)|(chan[c.chan].state.opllPreset<<4));
}
}
break;
}
case DIV_CMD_FM_AR: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.ar=c.value2&15;
car.ar=c.value2&15;
} else {
if (c.value==0) {
mod.ar=c.value2&15;
} else {
car.ar=c.value2&15;
}
}
rWrite(0x04,(mod.ar<<4)|(mod.dr));
rWrite(0x05,(car.ar<<4)|(car.dr));
break;
}
case DIV_CMD_FM_DR: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.dr=c.value2&15;
car.dr=c.value2&15;
} else {
if (c.value==0) {
mod.dr=c.value2&15;
} else {
car.dr=c.value2&15;
}
}
rWrite(0x04,(mod.ar<<4)|(mod.dr));
rWrite(0x05,(car.ar<<4)|(car.dr));
break;
}
case DIV_CMD_FM_SL: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.sl=c.value2&15;
car.sl=c.value2&15;
} else {
if (c.value==0) {
mod.sl=c.value2&15;
} else {
car.sl=c.value2&15;
}
}
rWrite(0x06,(mod.sl<<4)|(mod.rr));
rWrite(0x07,(car.sl<<4)|(car.rr));
break;
}
case DIV_CMD_FM_RR: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.rr=c.value2&15;
car.rr=c.value2&15;
} else {
if (c.value==0) {
mod.rr=c.value2&15;
} else {
car.rr=c.value2&15;
}
}
rWrite(0x06,(mod.sl<<4)|(mod.rr));
rWrite(0x07,(car.sl<<4)|(car.rr));
break;
}
case DIV_CMD_FM_AM: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.am=c.value2&1;
car.am=c.value2&1;
} else {
if (c.value==0) {
mod.am=c.value2&1;
} else {
car.am=c.value2&1;
}
}
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
break;
}
case DIV_CMD_FM_VIB: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.vib=c.value2&1;
car.vib=c.value2&1;
} else {
if (c.value==0) {
mod.vib=c.value2&1;
} else {
car.vib=c.value2&1;
}
}
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
break;
}
case DIV_CMD_FM_KSR: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.ksr=c.value2&1;
car.ksr=c.value2&1;
} else {
if (c.value==0) {
mod.ksr=c.value2&1;
} else {
car.ksr=c.value2&1;
}
}
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
break;
}
case DIV_CMD_FM_SUS: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.ssgEnv=c.value2?8:0;
car.ssgEnv=c.value2?8:0;
} else {
if (c.value==0) {
mod.ssgEnv=c.value2?8:0;
} else {
car.ssgEnv=c.value2?8:0;
}
}
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
break;
}
case DIV_CMD_FM_RS: {
if (c.chan>=9 && !properDrums) return 0;
DivInstrumentFM::Operator& mod=chan[c.chan].state.op[0];
DivInstrumentFM::Operator& car=chan[c.chan].state.op[1];
if (c.value<0) {
mod.ksl=c.value2&3;
car.ksl=c.value2&3;
} else {
if (c.value==0) {
mod.ksl=c.value2&3;
} else {
car.ksl=c.value2&3;
}
}
rWrite(0x02,(mod.ksl<<6)|(mod.tl&63));
rWrite(0x03,(car.ksl<<6)|((chan[c.chan].state.fms&1)<<4)|((chan[c.chan].state.ams&1)<<3)|chan[c.chan].state.fb);
break;
}
case DIV_CMD_FM_EXTCH:
if (!properDrumsSys) break;
if ((int)properDrums==c.value) break;
if (c.value) {
properDrums=true;
immWrite(0x0e,0x20);
} else {
properDrums=false;
immWrite(0x0e,0x00);
drumState=0;
}
break;
case DIV_CMD_MACRO_OFF:
chan[c.chan].std.mask(c.value,true);
break;
case DIV_CMD_MACRO_ON:
chan[c.chan].std.mask(c.value,false);
break;
case DIV_ALWAYS_SET_VOLUME:
return 0;
break;
case DIV_CMD_GET_VOLMAX:
return 15;
break;
case DIV_CMD_PRE_PORTA:
if (c.chan>=9 && !properDrums) return 0;
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_FREQUENCY(chan[c.chan].note);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_PRE_NOTE:
break;
default:
//printf("WARNING: unimplemented command %d\n",c.cmd);
break;
}
return 1;
}
void DivPlatformOPLL::forceIns() {
for (int i=0; i<9; i++) {
if (i>=6 && properDrums) continue;
// update custom preset
if (chan[i].state.opllPreset==0 && i==lastCustomMemory) {
DivInstrumentFM::Operator& mod=chan[i].state.op[0];
DivInstrumentFM::Operator& car=chan[i].state.op[1];
rWrite(0x00,(mod.am<<7)|(mod.vib<<6)|((mod.ssgEnv&8)<<2)|(mod.ksr<<4)|(mod.mult));
rWrite(0x01,(car.am<<7)|(car.vib<<6)|((car.ssgEnv&8)<<2)|(car.ksr<<4)|(car.mult));
rWrite(0x02,(mod.ksl<<6)|(mod.tl&63));
rWrite(0x03,(car.ksl<<6)|((chan[i].state.fms&1)<<4)|((chan[i].state.ams&1)<<3)|chan[i].state.fb);
rWrite(0x04,(mod.ar<<4)|(mod.dr));
rWrite(0x05,(car.ar<<4)|(car.dr));
rWrite(0x06,(mod.sl<<4)|(mod.rr));
rWrite(0x07,(car.sl<<4)|(car.rr));
}
if (i<9) {
rWrite(0x30+i,((15-VOL_SCALE_LOG_BROKEN(chan[i].outVol,15-chan[i].state.op[1].tl,15))&15)|(chan[i].state.opllPreset<<4));
}
if (!(i>=6 && properDrums)) {
if (chan[i].active) {
chan[i].keyOn=true;
chan[i].freqChanged=true;
chan[i].insChanged=true;
}
}
}
if (drums) { // WHAT?! FIX THIS!
immWrite(0x16,0x20);
immWrite(0x26,0x05);
immWrite(0x16,0x20);
immWrite(0x26,0x05);
immWrite(0x17,0x50);
immWrite(0x27,0x05);
immWrite(0x17,0x50);
immWrite(0x27,0x05);
immWrite(0x18,0xC0);
immWrite(0x28,0x01);
}
// restore drum volumes
if (properDrums) {
rWrite(0x36,drumVol[0]);
rWrite(0x37,drumVol[1]|(drumVol[4]<<4));
rWrite(0x38,drumVol[3]|(drumVol[2]<<4));
}
drumState=0;
}
void DivPlatformOPLL::toggleRegisterDump(bool enable) {
DivDispatch::toggleRegisterDump(enable);
}
void DivPlatformOPLL::setVRC7(bool vrc) {
vrc7=vrc;
}
void DivPlatformOPLL::setProperDrums(bool pd) {
properDrums=pd;
properDrumsSys=pd;
}
void* DivPlatformOPLL::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformOPLL::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformOPLL::getOscBuffer(int ch) {
if (ch>=9) return NULL;
return oscBuf[ch];
}
unsigned char* DivPlatformOPLL::getRegisterPool() {
return regPool;
}
int DivPlatformOPLL::getRegisterPoolSize() {
return 64;
}
void DivPlatformOPLL::reset() {
while (!writes.empty()) writes.pop();
memset(regPool,0,256);
if (vrc7) {
OPLL_Reset(&fm,opll_type_ds1001);
} else {
OPLL_Reset(&fm,opll_type_ym2413);
switch (patchSet) {
case 0:
fm.patchrom=OPLL_GetPatchROM(opll_type_ym2413);
break;
case 1:
fm.patchrom=OPLL_GetPatchROM(opll_type_ymf281);
break;
case 2:
fm.patchrom=OPLL_GetPatchROM(opll_type_ym2423);
break;
case 3:
fm.patchrom=OPLL_GetPatchROM(opll_type_ds1001);
break;
}
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
for (int i=0; i<11; i++) {
chan[i]=DivPlatformOPLL::Channel();
chan[i].std.setEngine(parent);
chan[i].vol=15;
chan[i].outVol=15;
}
for (int i=0; i<256; i++) {
oldWrites[i]=-1;
pendingWrites[i]=-1;
}
lastBusy=60;
drumState=0;
lastCustomMemory=-1;
drumVol[0]=0;
drumVol[1]=0;
drumVol[2]=0;
drumVol[3]=0;
drumVol[4]=0;
delay=0;
drums=false;
properDrums=properDrumsSys;
if (properDrums) {
immWrite(0x0e,0x20);
}
}
bool DivPlatformOPLL::keyOffAffectsArp(int ch) {
return false;
}
bool DivPlatformOPLL::keyOffAffectsPorta(int ch) {
return false;
}
void DivPlatformOPLL::notifyInsChange(int ins) {
for (int i=0; i<11; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
}
}
}
void DivPlatformOPLL::notifyInsDeletion(void* ins) {
for (int i=0; i<11; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformOPLL::poke(unsigned int addr, unsigned short val) {
immWrite(addr,val);
}
void DivPlatformOPLL::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
}
int DivPlatformOPLL::getPortaFloor(int ch) {
return (ch>5)?12:0;
}
void DivPlatformOPLL::setYMFM(bool use) {
useYMFM=use;
}
float DivPlatformOPLL::getPostAmp() {
return 1.5f;
}
void DivPlatformOPLL::setFlags(const DivConfig& flags) {
int clockSel=flags.getInt("clockSel",0);
if (clockSel==3) {
chipClock=COLOR_NTSC/2.0;
} else if (clockSel==2) {
chipClock=4000000.0;
} else if (clockSel==1) {
chipClock=COLOR_PAL*4.0/5.0;
} else {
chipClock=COLOR_NTSC;
}
CHECK_CUSTOM_CLOCK;
rate=chipClock/36;
patchSet=flags.getInt("patchSet",0);
for (int i=0; i<11; i++) {
oscBuf[i]->rate=rate/2;
}
noTopHatFreq=flags.getBool("noTopHatFreq",false);
}
int DivPlatformOPLL::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
patchSet=0;
for (int i=0; i<11; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
setFlags(flags);
reset();
return 11;
}
void DivPlatformOPLL::quit() {
for (int i=0; i<11; i++) {
delete oscBuf[i];
}
}
DivPlatformOPLL::~DivPlatformOPLL() {
}
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