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furnace/src/engine/platform/opl.cpp
tildearrow 45faadd4c8 update copyright year
2023-01-19 19:18:40 -05:00

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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 "opl.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.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define KVSL(x,y) ((chan[x].state.op[orderedOpsL1[ops==4][y]].kvs==2 && isOutputL[ops==4][chan[x].state.alg][y]) || chan[x].state.op[orderedOpsL1[ops==4][y]].kvs==1)
#define CHIP_FREQBASE chipFreqBase
// N = invalid
#define N 255
const unsigned char slotsOPL2i[4][20]={
{0, 1, 2, 6, 7, 8, 12, 13, 14}, // OP1
{3, 4, 5, 9, 10, 11, 15, 16, 17}, // OP2
{N, N, N, N, N, N, N, N, N},
{N, N, N, N, N, N, N, N, N}
};
const unsigned char slotsOPL2Drumsi[4][20]={
{0, 1, 2, 6, 7, 8, 12, 16, 14, 17, 13}, // OP1
{3, 4, 5, 9, 10, 11, 15, N, N, N, N}, // OP2
{N, N, N, N, N, N, N, N, N, N, N},
{N, N, N, N, N, N, N, N, N, N, N}
};
const unsigned short chanMapOPL2[20]={
0, 1, 2, 3, 4, 5, 6, 7, 8, N, N, N, N, N, N, N, N, N, N, N
};
const unsigned short chanMapOPL2Drums[20]={
0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 7, N, N, N, N, N, N, N, N, N
};
const unsigned char outChanMapOPL2[18]={
0, 1, 2, 3, 4, 5, 6, 7, 8, N, N, N, N, N, N, N, N, N
};
const unsigned char* slotsOPL2[4]={
slotsOPL2i[0],
slotsOPL2i[1],
slotsOPL2i[2],
slotsOPL2i[3]
};
const unsigned char* slotsOPL2Drums[4]={
slotsOPL2Drumsi[0],
slotsOPL2Drumsi[1],
slotsOPL2Drumsi[2],
slotsOPL2Drumsi[3]
};
const unsigned char slotsOPL3i[4][20]={
{0, 6, 1, 7, 2, 8, 18, 24, 19, 25, 20, 26, 30, 31, 32, 12, 13, 14}, // OP1
{3, 9, 4, 10, 5, 11, 21, 27, 22, 28, 23, 29, 33, 34, 35, 15, 16, 17}, // OP2
{6, N, 7, N, 8, N, 24, N, 25, N, 26, N, N, N, N, N, N, N}, // OP3
{9, N, 10, N, 11, N, 27, N, 28, N, 29, N, N, N, N, N, N, N} // OP4
};
const unsigned char slotsOPL3Drumsi[4][20]={
{0, 6, 1, 7, 2, 8, 18, 24, 19, 25, 20, 26, 30, 31, 32, 12, 16, 14, 17, 13}, // OP1
{3, 9, 4, 10, 5, 11, 21, 27, 22, 28, 23, 29, 33, 34, 35, 15, N, N, N, N}, // OP2
{6, N, 7, N, 8, N, 24, N, 25, N, 26, N, N, N, N, N, N, N, N, N}, // OP3
{9, N, 10, N, 11, N, 27, N, 28, N, 29, N, N, N, N, N, N, N, N, N} // OP4
};
const unsigned short chanMapOPL3[20]={
0, 3, 1, 4, 2, 5, 0x100, 0x103, 0x101, 0x104, 0x102, 0x105, 0x106, 0x107, 0x108, 6, 7, 8, N, N
};
const unsigned short chanMapOPL3Drums[20]={
0, 3, 1, 4, 2, 5, 0x100, 0x103, 0x101, 0x104, 0x102, 0x105, 0x106, 0x107, 0x108, 6, 7, 8, 8, 7
};
const unsigned char outChanMapOPL3[18]={
0, 3, 1, 4, 2, 5, 9, 12, 10, 13, 11, 14, 15, 16, 17, 6, 7, 8
};
const unsigned char* slotsOPL3[4]={
slotsOPL3i[0],
slotsOPL3i[1],
slotsOPL3i[2],
slotsOPL3i[3]
};
const unsigned char* slotsOPL3Drums[4]={
slotsOPL3Drumsi[0],
slotsOPL3Drumsi[1],
slotsOPL3Drumsi[2],
slotsOPL3Drumsi[3]
};
const unsigned int slotMap[36]={
0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15,
0x100, 0x101, 0x102, 0x103, 0x104, 0x105,
0x108, 0x109, 0x10a, 0x10b, 0x10c, 0x10d,
0x110, 0x111, 0x112, 0x113, 0x114, 0x115,
};
const bool isOutputL[2][4][4]={
{ // 2-op
{false, true, false, false}, // 1 > 2
{ true, true, false, false}, // 1 + 2
{false, true, false, false}, // ditto, 0
{ true, true, false, false}, // ditto, 1
},
{ // 4-op
{false, false, false, true}, // 1 > 2 > 3 > 4
{ true, false, false, true}, // 1 + (2 > 3 > 4)
{false, true, false, true}, // (1 > 2) + (3 > 4)
{ true, false, true, true} // 1 + (2 > 3) + 4
}
};
#undef N
const int orderedOpsL1[2][4]={
{0, 1, 0, 1}, // 2-op
{0, 2, 1, 3} // 4-op
};
const int orderedOpsL[4]={
0,2,1,3
};
#define ADDR_AM_VIB_SUS_KSR_MULT 0x20
#define ADDR_KSL_TL 0x40
#define ADDR_AR_DR 0x60
#define ADDR_SL_RR 0x80
#define ADDR_WS 0xe0
#define ADDR_FREQ 0xa0
#define ADDR_FREQH 0xb0
#define ADDR_LR_FB_ALG 0xc0
void DivPlatformOPL::acquire_nuked(short** buf, size_t len) {
static short o[4];
static int os[4];
static ymfm::ymfm_output<2> aOut;
for (size_t h=0; h<len; h++) {
os[0]=0; os[1]=0; os[2]=0; os[3]=0;
if (!writes.empty() && --delay<0) {
delay=1;
QueuedWrite& w=writes.front();
switch (w.addr) {
case 8:
if (adpcmChan>=0) {
adpcmB->write(w.addr-7,(w.val&15)|0x80);
OPL3_WriteReg(&fm,w.addr,w.val&0xc0);
} else {
OPL3_WriteReg(&fm,w.addr,w.val);
}
break;
case 7: case 9: case 10: case 11: case 12: case 13: case 14: case 15: case 16: case 17: case 18: case 21: case 22: case 23:
if (adpcmChan>=0) {
adpcmB->write(w.addr-7,w.val);
} else {
OPL3_WriteReg(&fm,w.addr,w.val);
}
break;
default:
OPL3_WriteReg(&fm,w.addr,w.val);
break;
}
regPool[w.addr&511]=w.val;
writes.pop();
}
if (downsample) {
OPL3_Generate4ChResampled(&fm,o);
} else {
OPL3_Generate4Ch(&fm,o);
}
os[0]+=o[0];
os[1]+=o[1];
os[2]+=o[2];
os[3]+=o[3];
if (adpcmChan>=0) {
adpcmB->clock();
aOut.clear();
adpcmB->output<2>(aOut,0);
if (!isMuted[adpcmChan]) {
os[0]-=aOut.data[0]>>3;
os[1]-=aOut.data[0]>>3;
oscBuf[adpcmChan]->data[oscBuf[adpcmChan]->needle++]=aOut.data[0];
} else {
oscBuf[adpcmChan]->data[oscBuf[adpcmChan]->needle++]=0;
}
}
if (fm.rhy&0x20) {
for (int i=0; i<melodicChans+1; i++) {
unsigned char ch=outChanMap[i];
if (ch==255) continue;
oscBuf[i]->data[oscBuf[i]->needle]=0;
if (fm.channel[i].out[0]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[0];
}
if (fm.channel[i].out[1]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[1];
}
if (fm.channel[i].out[2]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[2];
}
if (fm.channel[i].out[3]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[3];
}
oscBuf[i]->data[oscBuf[i]->needle]<<=1;
oscBuf[i]->needle++;
}
// special
oscBuf[melodicChans+1]->data[oscBuf[melodicChans+1]->needle++]=fm.slot[16].out*6;
oscBuf[melodicChans+2]->data[oscBuf[melodicChans+2]->needle++]=fm.slot[14].out*6;
oscBuf[melodicChans+3]->data[oscBuf[melodicChans+3]->needle++]=fm.slot[17].out*6;
oscBuf[melodicChans+4]->data[oscBuf[melodicChans+4]->needle++]=fm.slot[13].out*6;
} else {
for (int i=0; i<chans; i++) {
unsigned char ch=outChanMap[i];
if (ch==255) continue;
oscBuf[i]->data[oscBuf[i]->needle]=0;
if (fm.channel[i].out[0]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[0];
}
if (fm.channel[i].out[1]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[1];
}
if (fm.channel[i].out[2]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[2];
}
if (fm.channel[i].out[3]!=NULL) {
oscBuf[i]->data[oscBuf[i]->needle]+=*fm.channel[ch].out[3];
}
oscBuf[i]->data[oscBuf[i]->needle]<<=1;
oscBuf[i]->needle++;
}
}
if (os[0]<-32768) os[0]=-32768;
if (os[0]>32767) os[0]=32767;
if (os[1]<-32768) os[1]=-32768;
if (os[1]>32767) os[1]=32767;
if (os[2]<-32768) os[2]=-32768;
if (os[2]>32767) os[2]=32767;
if (os[3]<-32768) os[3]=-32768;
if (os[3]>32767) os[3]=32767;
buf[0][h]=os[0];
if (oplType==3 || oplType==759) {
buf[1][h]=os[1];
buf[2][h]=os[2];
buf[3][h]=os[3];
}
}
}
void DivPlatformOPL::acquire(short** buf, size_t len) {
//if (useYMFM) {
// acquire_ymfm(buf,len);
//} else {
acquire_nuked(buf,len);
//}
}
double DivPlatformOPL::NOTE_ADPCMB(int note) {
if (adpcmChan<0) return 0;
if (chan[adpcmChan].sample>=0 && chan[adpcmChan].sample<parent->song.sampleLen) {
double off=65535.0*(double)(parent->getSample(chan[adpcmChan].sample)->centerRate)/8363.0;
return parent->calcBaseFreq((double)chipClock/144,off,note,false);
}
return 0;
}
void DivPlatformOPL::tick(bool sysTick) {
for (int i=0; i<totalChans; i++) {
int ops=(slots[3][i]!=255 && chan[i].state.ops==4 && oplType==3)?4:2;
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].vol,MIN(63,chan[i].std.vol.val),63);
for (int j=0; j<ops; j++) {
unsigned char slot=slots[j][i];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[i].state.op[(ops==4)?orderedOpsL[j]:j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(i,j) || i>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[i].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
}
}
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 (oplType==3 && chan[i].std.panL.had) {
chan[i].pan=((chan[i].std.panL.val&1)<<1)|((chan[i].std.panL.val&2)>>1)|((chan[i].std.panL.val&4)<<1)|((chan[i].std.panL.val&8)>>1);
}
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,-131071,131071);
} 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].std.alg.had) {
chan[i].state.alg=chan[i].std.alg.val;
}
if (chan[i].std.fb.had) {
chan[i].state.fb=chan[i].std.fb.val;
}
if (chan[i].std.alg.had || chan[i].std.fb.had || (oplType==3 && chan[i].std.panL.had)) {
if (isMuted[i]) {
rWrite(chanMap[i]+ADDR_LR_FB_ALG,(chan[i].state.alg&1)|(chan[i].state.fb<<1));
if (ops==4) {
rWrite(chanMap[i+1]+ADDR_LR_FB_ALG,((chan[i].state.alg>>1)&1)|(chan[i].state.fb<<1));
}
} else {
rWrite(chanMap[i]+ADDR_LR_FB_ALG,(chan[i].state.alg&1)|(chan[i].state.fb<<1)|((chan[i].pan&15)<<4));
if (ops==4) {
rWrite(chanMap[i+1]+ADDR_LR_FB_ALG,((chan[i].state.alg>>1)&1)|(chan[i].state.fb<<1)|((chan[i].pan&15)<<4));
}
}
}
for (int j=0; j<ops; j++) {
unsigned char slot=slots[j][i];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[i].state.op[(ops==4)?orderedOpsL[j]:j];
DivMacroInt::IntOp& m=chan[i].std.op[(ops==4)?orderedOpsL[j]:j];
if (m.am.had) {
op.am=m.am.val;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
if (m.vib.had) {
op.vib=m.vib.val;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
if (m.sus.had) {
op.sus=m.sus.val;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
if (m.ksr.had) {
op.ksr=m.ksr.val;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
if (m.mult.had) {
op.mult=m.mult.val;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
if (m.ar.had) {
op.ar=m.ar.val;
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
}
if (m.dr.had) {
op.dr=m.dr.val;
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
}
if (m.sl.had) {
op.sl=m.sl.val;
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
}
if (m.rr.had) {
op.rr=m.rr.val;
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
}
if (oplType>1) {
if (m.ws.had) {
op.ws=m.ws.val;
rWrite(baseAddr+ADDR_WS,op.ws&((oplType==3)?7:3));
}
}
if (m.tl.had) {
op.tl=63-m.tl.val;
}
if (m.ksl.had) {
op.ksl=m.ksl.val;
}
if (m.tl.had || m.ksl.had) {
if (isMuted[i]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(i,j) || i>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[i].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
}
}
if (i<melodicChans) {
if (chan[i].hardReset && chan[i].keyOn) {
for (int j=0; j<ops; j++) {
unsigned char slot=slots[j][i];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[i].state.op[(ops==4)?orderedOpsL[j]:j];
immWrite(baseAddr+ADDR_SL_RR,0x0f);
immWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
oldWrites[baseAddr+ADDR_SL_RR]=-1;
oldWrites[baseAddr+ADDR_KSL_TL]=-1;
}
}
if (chan[i].keyOn || chan[i].keyOff) {
immWrite(chanMap[i]+ADDR_FREQH,0x00|(chan[i].freqH&31));
chan[i].keyOff=false;
}
if (chan[i].hardReset && chan[i].keyOn) {
for (int j=0; j<ops; j++) {
unsigned char slot=slots[j][i];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[i].state.op[(ops==4)?orderedOpsL[j]:j];
for (int k=0; k<5; k++) {
immWrite(baseAddr+ADDR_SL_RR,0x0f);
immWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
}
}
}
}
}
if (update4OpMask) {
update4OpMask=false;
if (oplType==3) {
unsigned char opMask=(int)(chan[0].fourOp)|(chan[2].fourOp<<1)|(chan[4].fourOp<<2)|(chan[6].fourOp<<3)|(chan[8].fourOp<<4)|(chan[10].fourOp<<5);
immWrite(0x104,opMask);
//printf("updating opMask to %.2x\n",opMask);
}
}
// update drums
if (properDrums) {
bool updateDrums=false;
for (int i=melodicChans; i<totalChans; i++) {
if (chan[i].keyOn || chan[i].keyOff) {
drumState&=~(1<<(totalChans-i-1));
updateDrums=true;
chan[i].keyOff=false;
}
}
if (updateDrums) {
immWrite(0xbd,(dam<<7)|(dvb<<6)|(properDrums<<5)|drumState);
}
}
// ADPCM
if (adpcmChan>=0) {
if (chan[adpcmChan].furnacePCM) {
chan[adpcmChan].std.next();
if (chan[adpcmChan].std.vol.had) {
chan[adpcmChan].outVol=(chan[adpcmChan].vol*MIN(chan[adpcmChan].macroVolMul,chan[adpcmChan].std.vol.val))/chan[adpcmChan].macroVolMul;
immWrite(18,chan[adpcmChan].outVol);
}
if (NEW_ARP_STRAT) {
chan[adpcmChan].handleArp();
} else if (chan[adpcmChan].std.arp.had) {
if (!chan[adpcmChan].inPorta) {
chan[adpcmChan].baseFreq=NOTE_ADPCMB(parent->calcArp(chan[adpcmChan].note,chan[adpcmChan].std.arp.val));
}
chan[adpcmChan].freqChanged=true;
}
if (chan[adpcmChan].std.phaseReset.had) {
if ((chan[adpcmChan].std.phaseReset.val==1) && chan[adpcmChan].active) {
chan[adpcmChan].keyOn=true;
}
}
}
if (chan[adpcmChan].freqChanged || chan[adpcmChan].keyOn || chan[adpcmChan].keyOff) {
if (chan[adpcmChan].sample>=0 && chan[adpcmChan].sample<parent->song.sampleLen) {
double off=65535.0*(double)(parent->getSample(chan[adpcmChan].sample)->centerRate)/8363.0;
chan[adpcmChan].freq=parent->calcFreq(chan[adpcmChan].baseFreq,chan[adpcmChan].pitch,chan[adpcmChan].fixedArp?chan[adpcmChan].baseNoteOverride:chan[adpcmChan].arpOff,chan[adpcmChan].fixedArp,false,4,chan[adpcmChan].pitch2,(double)chipClock/144,off);
} else {
chan[adpcmChan].freq=0;
}
if (chan[adpcmChan].fixedFreq>0) chan[adpcmChan].freq=chan[adpcmChan].fixedFreq;
if (pretendYMU) { // YMU759 only does 4KHz or 8KHz
if (chan[adpcmChan].freq>7500) {
chan[adpcmChan].freq=10922; // 8KHz
} else {
chan[adpcmChan].freq=5461; // 4KHz
}
}
immWrite(16,chan[adpcmChan].freq&0xff);
immWrite(17,(chan[adpcmChan].freq>>8)&0xff);
if (chan[adpcmChan].keyOn || chan[adpcmChan].keyOff) {
immWrite(7,0x01); // reset
if (chan[adpcmChan].active && chan[adpcmChan].keyOn && !chan[adpcmChan].keyOff) {
if (chan[adpcmChan].sample>=0 && chan[adpcmChan].sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[adpcmChan].sample);
immWrite(7,(s->isLoopable())?0xb0:0xa0); // start/repeat
}
}
chan[adpcmChan].keyOn=false;
chan[adpcmChan].keyOff=false;
}
chan[adpcmChan].freqChanged=false;
}
}
for (int i=0; i<512; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
bool updateDrums=false;
for (int i=0; i<totalChans; 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>131071) chan[i].freq=131071;
int freqt=toFreq(chan[i].freq);
chan[i].freqH=freqt>>8;
chan[i].freqL=freqt&0xff;
immWrite(chanMap[i]+ADDR_FREQ,chan[i].freqL);
}
if (i<melodicChans) {
if (chan[i].keyOn) {
immWrite(chanMap[i]+ADDR_FREQH,chan[i].freqH|(0x20));
chan[i].keyOn=false;
} else if (chan[i].freqChanged) {
immWrite(chanMap[i]+ADDR_FREQH,chan[i].freqH|(chan[i].active<<5));
}
} else {
if (chan[i].keyOn) {
immWrite(chanMap[i]+ADDR_FREQH,chan[i].freqH);
drumState|=(1<<(totalChans-i-1));
updateDrums=true;
chan[i].keyOn=false;
} else if (chan[i].freqChanged) {
immWrite(chanMap[i]+ADDR_FREQH,chan[i].freqH);
}
}
chan[i].freqChanged=false;
}
if (updateDrums) {
immWrite(0xbd,(dam<<7)|(dvb<<6)|(properDrums<<5)|drumState);
}
}
#define OPLL_C_NUM 686
int DivPlatformOPL::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 DivPlatformOPL::toFreq(int freq) {
if (freq>=OPLL_C_NUM*64) {
return 0x1c00|((freq>>7)&0x3ff);
} else if (freq>=OPLL_C_NUM*32) {
return 0x1800|((freq>>6)&0x3ff);
} else if (freq>=OPLL_C_NUM*16) {
return 0x1400|((freq>>5)&0x3ff);
} else if (freq>=OPLL_C_NUM*8) {
return 0x1000|((freq>>4)&0x3ff);
} else if (freq>=OPLL_C_NUM*4) {
return 0xc00|((freq>>3)&0x3ff);
} else if (freq>=OPLL_C_NUM*2) {
return 0x800|((freq>>2)&0x3ff);
} else if (freq>=OPLL_C_NUM) {
return 0x400|((freq>>1)&0x3ff);
} else {
return freq&0x3ff;
}
}
void DivPlatformOPL::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
if (ch==adpcmChan) return;
if (oplType<3 && ch<melodicChans) {
fm.channel[outChanMap[ch]].muted=mute;
}
int ops=(slots[3][ch]!=255 && chan[ch].state.ops==4 && oplType==3)?4:2;
if (ch&1 && ch<12) {
if (chan[ch-1].fourOp) return;
}
chan[ch].fourOp=(ops==4);
update4OpMask=true;
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][ch];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[ch].state.op[(ops==4)?orderedOpsL[i]:i];
if (isMuted[ch]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(ch,i) || ch>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[ch].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
}
if (isMuted[ch]) {
rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1));
if (ops==4) {
rWrite(chanMap[ch+1]+ADDR_LR_FB_ALG,((chan[ch].state.alg>>1)&1)|(chan[ch].state.fb<<1));
}
} else {
rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1)|((chan[ch].pan&15)<<4));
if (ops==4) {
rWrite(chanMap[ch+1]+ADDR_LR_FB_ALG,((chan[ch].state.alg>>1)&1)|(chan[ch].state.fb<<1)|((chan[ch].pan&15)<<4));
}
}
}
void DivPlatformOPL::commitState(int ch, DivInstrument* ins) {
if (chan[ch].insChanged) {
if (ch>melodicChans && ins->type==DIV_INS_OPL_DRUMS) {
for (int i=0; i<4; i++) {
chan[melodicChans+i+1].state.alg=ins->fm.alg;
chan[melodicChans+i+1].state.fb=ins->fm.fb;
chan[melodicChans+i+1].state.opllPreset=ins->fm.opllPreset;
chan[melodicChans+i+1].state.fixedDrums=ins->fm.fixedDrums;
chan[melodicChans+i+1].state.kickFreq=ins->fm.kickFreq;
chan[melodicChans+i+1].state.snareHatFreq=ins->fm.snareHatFreq;
chan[melodicChans+i+1].state.tomTopFreq=ins->fm.tomTopFreq;
chan[melodicChans+i+1].state.op[0]=ins->fm.op[i];
}
} else {
chan[ch].state=ins->fm;
}
}
if (chan[ch].insChanged) {
if (ch>melodicChans && ins->type==DIV_INS_OPL_DRUMS) {
for (int i=0; i<4; i++) {
int ch=melodicChans+1+i;
unsigned char slot=slots[0][ch];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[ch].state.op[0];
chan[ch].fourOp=false;
if (isMuted[ch]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[ch].outVol&0x3f,63))|(op.ksl<<6));
}
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
if (oplType>1) {
rWrite(baseAddr+ADDR_WS,op.ws&((oplType==3)?7:3));
}
if (isMuted[ch]) {
oldWrites[chanMap[ch]+ADDR_LR_FB_ALG]=-1;
rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1));
} else {
oldWrites[chanMap[ch]+ADDR_LR_FB_ALG]=-1;
rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1)|((chan[ch].pan&15)<<4));
}
}
} else {
int ops=(slots[3][ch]!=255 && chan[ch].state.ops==4 && oplType==3)?4:2;
chan[ch].fourOp=(ops==4);
if (chan[ch].fourOp) {
/*
if (chan[ch+1].active) {
chan[ch+1].keyOff=true;
chan[ch+1].keyOn=false;
chan[ch+1].active=false;
}*/
chan[ch+1].insChanged=true;
chan[ch+1].macroInit(NULL);
}
update4OpMask=true;
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][ch];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[ch].state.op[(ops==4)?orderedOpsL[i]:i];
if (isMuted[ch]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(ch,i) || ch>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[ch].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
if (oplType>1) {
rWrite(baseAddr+ADDR_WS,op.ws&((oplType==3)?7:3));
}
}
if (isMuted[ch]) {
oldWrites[chanMap[ch]+ADDR_LR_FB_ALG]=-1;
rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1));
if (ops==4) {
oldWrites[chanMap[ch+1]+ADDR_LR_FB_ALG]=-1;
rWrite(chanMap[ch+1]+ADDR_LR_FB_ALG,((chan[ch].state.alg>>1)&1)|(chan[ch].state.fb<<1));
}
} else {
oldWrites[chanMap[ch]+ADDR_LR_FB_ALG]=-1;
rWrite(chanMap[ch]+ADDR_LR_FB_ALG,(chan[ch].state.alg&1)|(chan[ch].state.fb<<1)|((chan[ch].pan&15)<<4));
if (ops==4) {
oldWrites[chanMap[ch+1]+ADDR_LR_FB_ALG]=-1;
rWrite(chanMap[ch+1]+ADDR_LR_FB_ALG,((chan[ch].state.alg>>1)&1)|(chan[ch].state.fb<<1)|((chan[ch].pan&15)<<4));
}
}
}
}
}
int DivPlatformOPL::dispatch(DivCommand c) {
if (c.chan>=totalChans && c.chan!=adpcmChan) return 0;
// ineffective in 4-op mode
if (oplType==3 && c.chan!=adpcmChan && c.chan<14 && (c.chan&1) && c.cmd!=DIV_CMD_GET_VOLMAX && c.cmd!=DIV_ALWAYS_SET_VOLUME) {
if (chan[c.chan-1].fourOp) return 0;
}
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
if (c.chan==adpcmChan) { // ADPCM
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_FM);
chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:255;
if (ins->type==DIV_INS_AMIGA || ins->type==DIV_INS_ADPCMB) {
chan[c.chan].furnacePCM=true;
} else {
chan[c.chan].furnacePCM=false;
}
if (skipRegisterWrites) break;
if (chan[c.chan].furnacePCM) {
chan[c.chan].macroInit(ins);
chan[c.chan].fixedFreq=0;
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
immWrite(18,chan[c.chan].outVol);
}
if (c.value!=DIV_NOTE_NULL) chan[c.chan].sample=ins->amiga.getSample(c.value);
if (chan[c.chan].sample>=0 && chan[c.chan].sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[c.chan].sample);
immWrite(8,0);
immWrite(9,(sampleOffB[chan[c.chan].sample]>>2)&0xff);
immWrite(10,(sampleOffB[chan[c.chan].sample]>>10)&0xff);
int end=sampleOffB[chan[c.chan].sample]+s->lengthB-1;
immWrite(11,(end>>2)&0xff);
immWrite(12,(end>>10)&0xff);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].baseFreq=NOTE_ADPCMB(chan[c.chan].note);
chan[c.chan].freqChanged=true;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
} else {
immWrite(7,0x01); // reset
immWrite(9,0);
immWrite(10,0);
immWrite(11,0);
immWrite(12,0);
break;
}
} else {
chan[c.chan].sample=-1;
chan[c.chan].macroInit(NULL);
chan[c.chan].outVol=chan[c.chan].vol;
if ((12*sampleBank+c.value%12)>=parent->song.sampleLen) {
break;
}
chan[c.chan].sample=12*sampleBank+c.value%12;
if (chan[c.chan].sample>=0 && chan[c.chan].sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(12*sampleBank+c.value%12);
immWrite(8,0);
immWrite(9,(sampleOffB[chan[c.chan].sample]>>2)&0xff);
immWrite(10,(sampleOffB[chan[c.chan].sample]>>10)&0xff);
int end=sampleOffB[chan[c.chan].sample]+s->lengthB-1;
immWrite(11,(end>>2)&0xff);
immWrite(12,(end>>10)&0xff);
int freq=(65536.0*(double)s->rate)/(double)chipRateBase;
chan[c.chan].fixedFreq=freq;
immWrite(16,freq&0xff);
immWrite(17,(freq>>8)&0xff);
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
} else {
immWrite(7,0x01); // reset
immWrite(9,0);
immWrite(10,0);
immWrite(11,0);
immWrite(12,0);
}
}
break;
}
DivInstrument* ins=parent->getIns(chan[c.chan].ins,c.chan>melodicChans?DIV_INS_OPL_DRUMS:DIV_INS_OPL);
chan[c.chan].macroInit(ins);
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
commitState(c.chan,ins);
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
if (c.chan>melodicChans && ins->type==DIV_INS_OPL_DRUMS && chan[c.chan].state.fixedDrums) {
chan[melodicChans+1].fixedFreq=(chan[melodicChans+1].state.snareHatFreq&1023)<<(chan[melodicChans+1].state.snareHatFreq>>10);
chan[melodicChans+2].fixedFreq=(chan[melodicChans+2].state.tomTopFreq&1023)<<(chan[melodicChans+2].state.tomTopFreq>>10);
chan[melodicChans+3].fixedFreq=chan[melodicChans+2].fixedFreq;
chan[melodicChans+4].fixedFreq=chan[melodicChans+1].fixedFreq;
chan[melodicChans+1].freqChanged=true;
chan[melodicChans+2].freqChanged=true;
chan[melodicChans+3].freqChanged=true;
chan[melodicChans+4].freqChanged=true;
} else {
if (c.chan>=melodicChans && (chan[c.chan].state.opllPreset==16 || ins->type==DIV_INS_OPL_DRUMS) && chan[c.chan].state.fixedDrums) { // drums
if (c.chan==melodicChans) {
chan[c.chan].fixedFreq=(chan[c.chan].state.kickFreq&1023)<<(chan[c.chan].state.kickFreq>>10);
} else if (c.chan==melodicChans+1 || c.chan==melodicChans+4) {
chan[c.chan].fixedFreq=(chan[c.chan].state.snareHatFreq&1023)<<(chan[c.chan].state.snareHatFreq>>10);
} else if (c.chan==melodicChans+2 || c.chan==melodicChans+3) {
chan[c.chan].fixedFreq=(chan[c.chan].state.tomTopFreq&1023)<<(chan[c.chan].state.tomTopFreq>>10);
} else {
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].fixedFreq=0;
}
} else {
chan[c.chan].baseFreq=NOTE_FREQUENCY(c.value);
chan[c.chan].fixedFreq=0;
}
}
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
chan[c.chan].active=true;
break;
}
case DIV_CMD_NOTE_OFF:
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
break;
case DIV_CMD_NOTE_OFF_ENV:
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
chan[c.chan].std.release();
break;
case DIV_CMD_ENV_RELEASE:
chan[c.chan].std.release();
break;
case DIV_CMD_VOLUME: {
if (pretendYMU && c.chan!=adpcmChan) {
c.value=pow(((double)c.value/127.0),0.5)*63.0;
if (c.value<0) c.value=0;
if (c.value>63) c.value=63;
}
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
}
if (c.chan==adpcmChan) { // ADPCM-B
immWrite(18,chan[c.chan].outVol);
break;
}
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(c.chan,i) || c.chan>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
}
break;
}
case DIV_CMD_GET_VOLUME: {
if (pretendYMU && c.chan!=adpcmChan) {
return pow(((double)chan[c.chan].vol/63.0),2.0)*127.0;
}
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_PANNING: {
if (oplType!=3) break;
if (c.chan==adpcmChan) break;
chan[c.chan].pan&=~3;
if (c.value==0 && c.value2==0 && compatPan) {
chan[c.chan].pan|=3;
} else {
chan[c.chan].pan|=(c.value>0)|((c.value2>0)<<1);
}
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (isMuted[c.chan]) {
rWrite(chanMap[c.chan]+ADDR_LR_FB_ALG,(chan[c.chan].state.alg&1)|(chan[c.chan].state.fb<<1));
if (ops==4) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1));
}
} else {
rWrite(chanMap[c.chan]+ADDR_LR_FB_ALG,(chan[c.chan].state.alg&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&15)<<4));
if (ops==4) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&15)<<4));
}
}
break;
}
case DIV_CMD_SURROUND_PANNING: {
if (oplType!=3) break;
if (c.chan==adpcmChan) break;
if (c.value==2) {
chan[c.chan].pan&=3;
if (c.value2>0) chan[c.chan].pan|=4;
} else if (c.value==3) {
if (c.value2>0) chan[c.chan].pan|=8;
} else {
break;
}
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (isMuted[c.chan]) {
rWrite(chanMap[c.chan]+ADDR_LR_FB_ALG,(chan[c.chan].state.alg&1)|(chan[c.chan].state.fb<<1));
if (ops==4) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1));
}
} else {
rWrite(chanMap[c.chan]+ADDR_LR_FB_ALG,(chan[c.chan].state.alg&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&15)<<4));
if (ops==4) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&15)<<4));
}
}
break;
}
case DIV_CMD_PITCH: {
if (c.chan==adpcmChan) {
if (!chan[c.chan].furnacePCM) break;
}
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=(c.chan==adpcmChan)?(NOTE_ADPCMB(c.value2)):(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 && parent->song.linearPitch!=2) {
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_SAMPLE_BANK:
if (adpcmChan<0) break;
sampleBank=c.value;
if (sampleBank>(int)(parent->song.sample.size()/12)) {
sampleBank=parent->song.sample.size()/12;
}
iface.sampleBank=sampleBank;
break;
case DIV_CMD_LEGATO: {
if (chan[c.chan].insChanged) {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_FM);
commitState(c.chan,ins);
chan[c.chan].insChanged=false;
}
chan[c.chan].baseFreq=(c.chan==adpcmChan)?(NOTE_ADPCMB(c.value)):(NOTE_FREQUENCY(c.value));
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_FM_LFO: {
if (c.chan==adpcmChan) break;
if (c.value&2) {
dvb=c.value&1;
} else {
dam=c.value&1;
}
immWrite(0xbd,(dam<<7)|(dvb<<6)|(properDrums<<5)|drumState);
break;
}
case DIV_CMD_FM_FB: {
if (c.chan==adpcmChan) break;
chan[c.chan].state.fb=c.value&7;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (isMuted[c.chan]) {
rWrite(chanMap[c.chan]+ADDR_LR_FB_ALG,(chan[c.chan].state.alg&1)|(chan[c.chan].state.fb<<1));
if (ops==4) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1));
}
} else {
rWrite(chanMap[c.chan]+ADDR_LR_FB_ALG,(chan[c.chan].state.alg&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&15)<<4));
if (ops==4) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&15)<<4));
}
}
break;
}
case DIV_CMD_FM_MULT: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.mult=c.value2&15;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
break;
}
case DIV_CMD_FM_TL: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.tl=c.value2&63;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(c.chan,c.value) || c.chan>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
break;
}
case DIV_CMD_FM_AR: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.ar=c.value2&15;
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.ar=c.value2&15;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
}
break;
}
case DIV_CMD_FM_DR: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.dr=c.value2&15;
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.dr=c.value2&15;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
}
break;
}
case DIV_CMD_FM_SL: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.sl=c.value2&15;
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.sl=c.value2&15;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
}
break;
}
case DIV_CMD_FM_RR: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.rr=c.value2&15;
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.rr=c.value2&15;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
}
break;
}
case DIV_CMD_FM_AM: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.am=c.value2&1;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.am=c.value2&1;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
break;
}
case DIV_CMD_FM_VIB: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.vib=c.value2&1;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.vib=c.value2&1;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
break;
}
case DIV_CMD_FM_SUS: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.sus=c.value2&1;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.sus=c.value2&1;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
break;
}
case DIV_CMD_FM_KSR: {
if (c.chan==adpcmChan) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.ksr=c.value2&1;
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.ksr=c.value2&1;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
}
break;
}
case DIV_CMD_FM_WS: {
if (c.chan==adpcmChan) break;
if (oplType<2) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.ws=c.value2&7;
rWrite(baseAddr+ADDR_WS,op.ws&((oplType==3)?7:3));
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.ws=c.value2&7;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
rWrite(baseAddr+ADDR_WS,op.ws&((oplType==3)?7:3));
}
break;
}
case DIV_CMD_FM_RS: {
if (c.chan==adpcmChan) break;
if (oplType<2) break;
int ops=(slots[3][c.chan]!=255 && chan[c.chan].state.ops==4 && oplType==3)?4:2;
if (c.value<0) {
for (int i=0; i<ops; i++) {
unsigned char slot=slots[i][c.chan];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[i]:i];
op.ksl=c.value2&3;
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(c.chan,i) || c.chan>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
}
} else {
if (c.value>=ops) break;
DivInstrumentFM::Operator& op=chan[c.chan].state.op[(ops==4)?orderedOpsL[c.value]:c.value];
op.ksl=c.value2&3;
unsigned char slot=slots[c.value][c.chan];
if (slot==255) break;
unsigned short baseAddr=slotMap[slot];
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(c.chan,c.value) || c.chan>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[c.chan].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
}
break;
}
case DIV_CMD_FM_EXTCH: {
if (!properDrumsSys) break;
properDrums=c.value;
immWrite(0xbd,(dam<<7)|(dvb<<6)|(properDrums<<5)|drumState);
slots=properDrums?slotsDrums:slotsNonDrums;
if (oplType==3) {
chanMap=properDrums?chanMapOPL3Drums:chanMapOPL3;
melodicChans=properDrums?15:18;
totalChans=properDrums?20:18;
} else {
chanMap=properDrums?chanMapOPL2Drums:chanMapOPL2;
melodicChans=properDrums?6:9;
totalChans=properDrums?11:9;
}
break;
}
case DIV_CMD_FM_HARD_RESET:
if (c.chan==adpcmChan) break;
chan[c.chan].hardReset=c.value;
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:
if (c.chan==adpcmChan) return 255;
if (pretendYMU) return 127;
return 63;
break;
case DIV_CMD_PRE_PORTA:
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) {
chan[c.chan].baseFreq=(c.chan==adpcmChan)?(NOTE_ADPCMB(chan[c.chan].note)):(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 DivPlatformOPL::forceIns() {
if (oplType==3) {
chanMap=properDrums?chanMapOPL3Drums:chanMapOPL3;
melodicChans=properDrums?15:18;
totalChans=properDrums?20:18;
} else {
chanMap=properDrums?chanMapOPL2Drums:chanMapOPL2;
melodicChans=properDrums?6:9;
totalChans=properDrums?11:9;
}
for (int i=0; i<totalChans; i++) {
//int ops=(slots[3][i]!=255 && chan[i].state.ops==4 && oplType==3)?4:2;
chan[i].insChanged=true;
chan[i].freqChanged=true;
/*
chan[i].fourOp=(ops==4);
for (int j=0; j<ops; j++) {
unsigned char slot=slots[j][i];
if (slot==255) continue;
unsigned short baseAddr=slotMap[slot];
DivInstrumentFM::Operator& op=chan[i].state.op[(ops==4)?orderedOpsL[j]:j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_KSL_TL,63|(op.ksl<<6));
} else {
if (KVSL(i,j) || i>melodicChans) {
rWrite(baseAddr+ADDR_KSL_TL,(63-VOL_SCALE_LOG_BROKEN(63-op.tl,chan[i].outVol&0x3f,63))|(op.ksl<<6));
} else {
rWrite(baseAddr+ADDR_KSL_TL,op.tl|(op.ksl<<6));
}
}
rWrite(baseAddr+ADDR_AM_VIB_SUS_KSR_MULT,(op.am<<7)|(op.vib<<6)|(op.sus<<5)|(op.ksr<<4)|op.mult);
rWrite(baseAddr+ADDR_AR_DR,(op.ar<<4)|op.dr);
rWrite(baseAddr+ADDR_SL_RR,(op.sl<<4)|op.rr);
if (oplType>1) {
rWrite(baseAddr+ADDR_WS,op.ws&((oplType==3)?7:3));
}
}
if (isMuted[i]) {
rWrite(chanMap[i]+ADDR_LR_FB_ALG,(chan[i].state.alg&1)|(chan[i].state.fb<<1));
if (ops==4) {
rWrite(chanMap[i+1]+ADDR_LR_FB_ALG,((chan[i].state.alg>>1)&1)|(chan[i].state.fb<<1));
}
} else {
rWrite(chanMap[i]+ADDR_LR_FB_ALG,(chan[i].state.alg&1)|(chan[i].state.fb<<1)|((chan[i].pan&15)<<4));
if (ops==4) {
rWrite(chanMap[i+1]+ADDR_LR_FB_ALG,((chan[i].state.alg>>1)&1)|(chan[i].state.fb<<1)|((chan[i].pan&15)<<4));
}
}
*/
}
for (int i=0; i<512; i++) {
oldWrites[i]=-1;
}
immWrite(0xbd,(dam<<7)|(dvb<<6)|(properDrums<<5)|drumState);
update4OpMask=true;
}
void DivPlatformOPL::toggleRegisterDump(bool enable) {
DivDispatch::toggleRegisterDump(enable);
}
void* DivPlatformOPL::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformOPL::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformOPL::getOscBuffer(int ch) {
if (ch>=totalChans) return NULL;
if (oplType==3 && ch<12) {
if (chan[ch&(~1)].fourOp) {
if (ch&1) {
return oscBuf[ch-1];
} else {
return oscBuf[ch+1];
}
}
}
return oscBuf[ch];
}
unsigned char* DivPlatformOPL::getRegisterPool() {
return regPool;
}
int DivPlatformOPL::getRegisterPoolSize() {
return (oplType<3)?256:512;
}
void DivPlatformOPL::reset() {
while (!writes.empty()) writes.pop();
memset(regPool,0,512);
/*
if (useYMFM) {
fm_ymfm->reset();
}
*/
if (downsample) {
const unsigned int downsampledRate=(unsigned int)((double)rate*rate/chipRateBase);
OPL3_Reset(&fm,downsampledRate);
} else {
OPL3_Reset(&fm,rate);
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
properDrums=properDrumsSys;
if (oplType==3) {
chanMap=properDrums?chanMapOPL3Drums:chanMapOPL3;
outChanMap=outChanMapOPL3;
melodicChans=properDrums?15:18;
totalChans=properDrums?20:18;
} else {
chanMap=properDrums?chanMapOPL2Drums:chanMapOPL2;
outChanMap=outChanMapOPL2;
melodicChans=properDrums?6:9;
totalChans=properDrums?11:9;
}
for (int i=0; i<totalChans; i++) {
chan[i]=DivPlatformOPL::Channel();
chan[i].std.setEngine(parent);
chan[i].vol=0x3f;
chan[i].outVol=0x3f;
}
if (adpcmChan>=0) {
chan[adpcmChan]=DivPlatformOPL::Channel();
chan[adpcmChan].std.setEngine(parent);
chan[adpcmChan].vol=0xff;
chan[adpcmChan].outVol=0xff;
adpcmB->reset();
// volume
immWrite(18,0xff);
// ADPCM limit
immWrite(20,0xff);
immWrite(19,0xff);
}
if (oplType<3) for (int i=0; i<melodicChans; i++) {
fm.channel[outChanMap[i]].muted=isMuted[i];
}
for (int i=0; i<512; i++) {
oldWrites[i]=-1;
pendingWrites[i]=-1;
}
lastBusy=60;
lfoValue=8;
drumState=0;
sampleBank=0;
drumVol[0]=0;
drumVol[1]=0;
drumVol[2]=0;
drumVol[3]=0;
drumVol[4]=0;
if (oplType==2) { // enable OPL2 waveforms
immWrite(0x01,0x20);
}
if (oplType==3) { // enable OPL3 features
immWrite(0x105,1);
}
update4OpMask=true;
dam=false;
dvb=false;
delay=0;
immWrite(0xbd,(dam<<7)|(dvb<<6)|(properDrums<<5)|drumState);
}
int DivPlatformOPL::getOutputCount() {
return (oplType==3 || oplType==759)?4:1;
}
bool DivPlatformOPL::keyOffAffectsArp(int ch) {
return false;
}
bool DivPlatformOPL::keyOffAffectsPorta(int ch) {
return false;
}
void DivPlatformOPL::notifyInsChange(int ins) {
for (int i=0; i<totalChans; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
}
}
}
void DivPlatformOPL::notifyInsDeletion(void* ins) {
for (int i=0; i<totalChans; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformOPL::poke(unsigned int addr, unsigned short val) {
immWrite(addr,val);
}
void DivPlatformOPL::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
}
int DivPlatformOPL::getPortaFloor(int ch) {
return (ch>5)?12:0;
}
void DivPlatformOPL::setYMFM(bool use) {
useYMFM=use;
}
void DivPlatformOPL::setOPLType(int type, bool drums) {
pretendYMU=false;
downsample=false;
adpcmChan=-1;
switch (type) {
case 1: case 2: case 8950:
slotsNonDrums=slotsOPL2;
slotsDrums=slotsOPL2Drums;
slots=drums?slotsDrums:slotsNonDrums;
chanMap=drums?chanMapOPL2Drums:chanMapOPL2;
outChanMap=outChanMapOPL2;
chipFreqBase=32768*72;
chans=9;
melodicChans=drums?6:9;
totalChans=drums?11:9;
if (type==8950) {
adpcmChan=drums?11:9;
}
break;
case 3: case 4: case 759:
slotsNonDrums=slotsOPL3;
slotsDrums=slotsOPL3Drums;
slots=drums?slotsDrums:slotsNonDrums;
chanMap=drums?chanMapOPL3Drums:chanMapOPL3;
outChanMap=outChanMapOPL3;
chipFreqBase=32768*288;
chans=18;
melodicChans=drums?15:18;
totalChans=drums?20:18;
if (type==759) {
pretendYMU=true;
adpcmChan=16;
} else if (type==4) {
chipFreqBase=32768*684;
downsample=true;
}
break;
}
chipType=type;
if (type==759 || type==4) {
oplType=3;
} else if (type==8950) {
oplType=1;
} else {
oplType=type;
}
properDrumsSys=drums;
}
void DivPlatformOPL::setFlags(const DivConfig& flags) {
/*
if (flags==3) {
chipClock=COLOR_NTSC*12.0/7.0;
} else if (flags==2) {
chipClock=8000000.0;
} else if (flags==1) {
chipClock=COLOR_PAL*12.0/7.0;
} else {
chipClock=COLOR_NTSC*15.0/7.0;
}
ladder=flags&0x80000000;
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
if (useYMFM) {
if (fm_ymfm!=NULL) delete fm_ymfm;
if (ladder) {
fm_ymfm=new ymfm::ym2612(iface);
} else {
fm_ymfm=new ymfm::ym3438(iface);
}
rate=chipClock/144;
} else {
rate=chipClock/36;
}*/
compatPan=false;
switch (chipType) {
default:
case 1: case 2: case 8950:
switch (flags.getInt("clockSel",0)) {
case 0x01:
chipClock=COLOR_PAL*4.0/5.0;
break;
case 0x02:
chipClock=4000000.0;
break;
case 0x03:
chipClock=3000000.0;
break;
case 0x04:
chipClock=38400*13*8; // 31948800/8
break;
case 0x05:
chipClock=3500000.0;
break;
default:
chipClock=COLOR_NTSC;
break;
}
CHECK_CUSTOM_CLOCK;
rate=chipClock/72;
chipRateBase=rate;
break;
case 3:
switch (flags.getInt("clockSel",0)) {
case 0x01:
chipClock=COLOR_PAL*16.0/5.0;
break;
case 0x02:
chipClock=14000000.0;
break;
case 0x03:
chipClock=16000000.0;
break;
case 0x04:
chipClock=15000000.0;
break;
default:
chipClock=COLOR_NTSC*4.0;
break;
}
CHECK_CUSTOM_CLOCK;
rate=chipClock/288;
chipRateBase=rate;
compatPan=flags.getBool("compatPan",false);
break;
case 4:
switch (flags.getInt("clockSel",0)) {
case 0x01:
chipClock=COLOR_PAL*32.0/5.0;
break;
case 0x02:
chipClock=33868800.0;
break;
default:
chipClock=COLOR_NTSC*8.0;
break;
}
CHECK_CUSTOM_CLOCK;
rate=chipClock/768;
chipRateBase=chipClock/684;
break;
case 759:
rate=48000;
chipRateBase=rate;
chipClock=rate*288;
break;
}
for (int i=0; i<20; i++) {
oscBuf[i]->rate=rate;
}
}
const void* DivPlatformOPL::getSampleMem(int index) {
return (index==0 && adpcmChan>=0) ? adpcmBMem : NULL;
}
size_t DivPlatformOPL::getSampleMemCapacity(int index) {
return (index==0 && adpcmChan>=0) ? 262144 : 0;
}
size_t DivPlatformOPL::getSampleMemUsage(int index) {
return (index==0 && adpcmChan>=0) ? adpcmBMemLen : 0;
}
bool DivPlatformOPL::isSampleLoaded(int index, int sample) {
if (index!=0) return false;
if (sample<0 || sample>255) return false;
return sampleLoaded[sample];
}
void DivPlatformOPL::renderSamples(int sysID) {
if (adpcmChan<0) return;
memset(adpcmBMem,0,getSampleMemCapacity(0));
memset(sampleOffB,0,256*sizeof(unsigned int));
memset(sampleLoaded,0,256*sizeof(bool));
size_t memPos=0;
for (int i=0; i<parent->song.sampleLen; i++) {
DivSample* s=parent->song.sample[i];
if (!s->renderOn[0][sysID]) {
sampleOffB[i]=0;
continue;
}
int paddedLen=(s->lengthB+255)&(~0xff);
if ((memPos&0xf00000)!=((memPos+paddedLen)&0xf00000)) {
memPos=(memPos+0xfffff)&0xf00000;
}
if (memPos>=getSampleMemCapacity(0)) {
logW("out of ADPCM memory for sample %d!",i);
break;
}
if (memPos+paddedLen>=getSampleMemCapacity(0)) {
memcpy(adpcmBMem+memPos,s->dataB,getSampleMemCapacity(0)-memPos);
logW("out of ADPCM memory for sample %d!",i);
} else {
memcpy(adpcmBMem+memPos,s->dataB,paddedLen);
sampleLoaded[i]=true;
}
sampleOffB[i]=memPos;
memPos+=paddedLen;
}
adpcmBMemLen=memPos+256;
}
int DivPlatformOPL::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<20; i++) {
isMuted[i]=false;
}
for (int i=0; i<20; i++) {
oscBuf[i]=new DivDispatchOscBuffer;
}
setFlags(flags);
if (adpcmChan>=0) {
adpcmBMem=new unsigned char[getSampleMemCapacity(0)];
adpcmBMemLen=0;
iface.adpcmBMem=adpcmBMem;
iface.sampleBank=0;
adpcmB=new ymfm::adpcm_b_engine(iface,2);
}
reset();
return totalChans;
}
void DivPlatformOPL::quit() {
for (int i=0; i<20; i++) {
delete oscBuf[i];
}
if (adpcmChan>=0) {
delete adpcmB;
delete[] adpcmBMem;
}
}
DivPlatformOPL::~DivPlatformOPL() {
}
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