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furnace/src/engine/platform/genesis.cpp
tildearrow c009cb3536 dev112 - prepare for advanced arp macro 
this new advanced arp macro offers more flexibility and reduces code duplication
it allows you to set each step of the macro to either relative or fixed mode
(instead of just one mode for the entire macro)

the UI is still a work in progress and doesn't work well

this change is big and may break things! further fixes incoming
2022-08-22 15:59:45 -05:00

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/**
* 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 "genesis.h"
#include "../engine.h"
#include <string.h>
#include <math.h>
#define CHIP_FREQBASE fmFreqBase
#define CHIP_DIVIDER fmDivBase
#define IS_REALLY_MUTED(x) (isMuted[x] && (x<5 || !softPCM || (isMuted[5] && isMuted[6])))
void DivPlatformGenesis::processDAC() {
if (softPCM) {
softPCMTimer+=chipClock/576;
if (softPCMTimer>rate) {
softPCMTimer-=rate;
int sample=0;
for (int i=5; i<7; i++) {
if (chan[i].dacSample!=-1) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (!isMuted[i] && s->samples>0) {
if (parent->song.noOPN2Vol) {
chan[i].dacOutput=s->data8[chan[i].dacDirection?(s->samples-chan[i].dacPos-1):chan[i].dacPos];
} else {
chan[i].dacOutput=(s->data8[chan[i].dacDirection?(s->samples-chan[i].dacPos-1):chan[i].dacPos]*dacVolTable[chan[i].outVol])>>7;
}
sample+=chan[i].dacOutput;
} else {
chan[i].dacOutput=0;
}
chan[i].dacPeriod+=chan[i].dacRate;
if (chan[i].dacPeriod>=(chipClock/576)) {
if (s->samples>0) {
while (chan[i].dacPeriod>=(chipClock/576)) {
++chan[i].dacPos;
if (!chan[i].dacDirection && (s->isLoopable() && chan[i].dacPos>=s->getEndPosition())) {
chan[i].dacPos=s->loopStart;
} else if (chan[i].dacPos>=s->samples) {
chan[i].dacSample=-1;
chan[i].dacPeriod=0;
break;
}
chan[i].dacPeriod-=(chipClock/576);
}
} else {
chan[i].dacSample=-1;
}
}
}
}
//sample>>=1;
if (sample<-128) sample=-128;
if (sample>127) sample=127;
urgentWrite(0x2a,(unsigned char)sample+0x80);
}
} else {
if (!chan[5].dacReady) {
chan[5].dacDelay+=32000;
if (chan[5].dacDelay>=rate) {
chan[5].dacDelay-=rate;
chan[5].dacReady=true;
}
}
if (chan[5].dacMode && chan[5].dacSample!=-1) {
chan[5].dacPeriod+=chan[5].dacRate;
if (chan[5].dacPeriod>=rate) {
DivSample* s=parent->getSample(chan[5].dacSample);
if (s->samples>0) {
if (!isMuted[5]) {
if (chan[5].dacReady && writes.size()<16) {
int sample;
if (parent->song.noOPN2Vol) {
sample=s->data8[chan[5].dacDirection?(s->samples-chan[5].dacPos-1):chan[5].dacPos];
} else {
sample=(s->data8[chan[5].dacDirection?(s->samples-chan[5].dacPos-1):chan[5].dacPos]*dacVolTable[chan[5].outVol])>>7;
}
urgentWrite(0x2a,(unsigned char)sample+0x80);
chan[5].dacReady=false;
}
}
chan[5].dacPos++;
if (!chan[5].dacDirection && (s->isLoopable() && chan[5].dacPos>=s->getEndPosition())) {
chan[5].dacPos=s->loopStart;
} else if (chan[5].dacPos>=s->samples) {
chan[5].dacSample=-1;
if (parent->song.brokenDACMode) {
rWrite(0x2b,0);
}
}
while (chan[5].dacPeriod>=rate) chan[5].dacPeriod-=rate;
} else {
chan[5].dacSample=-1;
}
}
}
}
}
void DivPlatformGenesis::acquire_nuked(short* bufL, short* bufR, size_t start, size_t len) {
static short o[2];
static int os[2];
for (size_t h=start; h<start+len; h++) {
processDAC();
os[0]=0; os[1]=0;
for (int i=0; i<6; i++) {
if (!writes.empty() && --delay<0) {
delay=0;
QueuedWrite& w=writes.front();
if (w.addrOrVal) {
OPN2_Write(&fm,0x1+((w.addr>>8)<<1),w.val);
//printf("write: %x = %.2x\n",w.addr,w.val);
lastBusy=0;
regPool[w.addr&0x1ff]=w.val;
writes.pop_front();
} else {
lastBusy++;
if (fm.write_busy==0) {
//printf("busycounter: %d\n",lastBusy);
OPN2_Write(&fm,0x0+((w.addr>>8)<<1),w.addr);
w.addrOrVal=true;
}
}
}
OPN2_Clock(&fm,o); os[0]+=o[0]; os[1]+=o[1];
//OPN2_Write(&fm,0,0);
if (i==5) {
if (fm.dacen) {
if (softPCM) {
oscBuf[5]->data[oscBuf[5]->needle++]=chan[5].dacOutput<<7;
oscBuf[6]->data[oscBuf[6]->needle++]=chan[6].dacOutput<<7;
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.dacdata<<7;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.ch_out[i]<<7;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm.ch_out[i]<<7;
}
}
os[0]=(os[0]<<5);
if (os[0]<-32768) os[0]=-32768;
if (os[0]>32767) os[0]=32767;
os[1]=(os[1]<<5);
if (os[1]<-32768) os[1]=-32768;
if (os[1]>32767) os[1]=32767;
bufL[h]=os[0];
bufR[h]=os[1];
}
}
void DivPlatformGenesis::acquire_ymfm(short* bufL, short* bufR, size_t start, size_t len) {
static int os[2];
ymfm::ym2612::fm_engine* fme=fm_ymfm->debug_engine();
for (size_t h=start; h<start+len; h++) {
processDAC();
os[0]=0; os[1]=0;
if (!writes.empty()) {
QueuedWrite& w=writes.front();
fm_ymfm->write(0x0+((w.addr>>8)<<1),w.addr);
fm_ymfm->write(0x1+((w.addr>>8)<<1),w.val);
regPool[w.addr&0x1ff]=w.val;
writes.pop_front();
lastBusy=1;
}
if (ladder) {
fm_ymfm->generate(&out_ymfm);
} else {
((ymfm::ym3438*)fm_ymfm)->generate(&out_ymfm);
}
os[0]=out_ymfm.data[0];
os[1]=out_ymfm.data[1];
//OPN2_Write(&fm,0,0);
for (int i=0; i<6; i++) {
if (i==5) {
if (fm_ymfm->debug_dac_enable()) {
if (softPCM) {
oscBuf[5]->data[oscBuf[5]->needle++]=chan[5].dacOutput<<7;
oscBuf[6]->data[oscBuf[6]->needle++]=chan[6].dacOutput<<7;
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=fm_ymfm->debug_dac_data()<<7;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=(fme->debug_channel(i)->debug_output(0)+fme->debug_channel(i)->debug_output(1))<<6;
}
} else {
oscBuf[i]->data[oscBuf[i]->needle++]=(fme->debug_channel(i)->debug_output(0)+fme->debug_channel(i)->debug_output(1))<<6;
}
}
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;
bufL[h]=os[0];
bufR[h]=os[1];
}
}
void DivPlatformGenesis::acquire(short* bufL, short* bufR, size_t start, size_t len) {
if (useYMFM) {
acquire_ymfm(bufL,bufR,start,len);
} else {
acquire_nuked(bufL,bufR,start,len);
}
}
void DivPlatformGenesis::tick(bool sysTick) {
for (int i=0; i<(softPCM?7:6); i++) {
if (i==2 && extMode) continue;
chan[i].std.next();
if (chan[i].std.vol.had) {
int inVol=chan[i].std.vol.val;
if (chan[i].furnaceDac && inVol>0) {
inVol+=63;
}
chan[i].outVol=VOL_SCALE_LOG(chan[i].vol,MIN(127,inVol),127);
if (i<6) for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
}
if (i>=5 && chan[i].furnaceDac) {
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=parent->calcBaseFreq(1,1,parent->calcArp(chan[i].note,chan[i].std.arp.val),false);
}
chan[i].freqChanged=true;
}
} else {
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=NOTE_FNUM_BLOCK(parent->calcArp(chan[i].note,chan[i].std.arp.val),11);
}
chan[i].freqChanged=true;
}
}
if (i>=5 && chan[i].furnaceDac) {
if (chan[i].std.panL.had) {
chan[5].pan&=1;
chan[5].pan|=chan[i].std.panL.val?2:0;
}
if (chan[i].std.panR.had) {
chan[5].pan&=2;
chan[5].pan|=chan[i].std.panR.val?1:0;
}
if (chan[i].std.panL.had || chan[i].std.panR.had) {
rWrite(chanOffs[5]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[5].pan<<6))|(chan[5].state.fms&7)|((chan[5].state.ams&3)<<4));
}
} else {
if (chan[i].std.panL.had) {
chan[i].pan=chan[i].std.panL.val&3;
if (i<6) {
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<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,-32768,32767);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
if (i>=6) continue;
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;
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
if (!parent->song.algMacroBehavior) for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
}
if (chan[i].std.fb.had) {
chan[i].state.fb=chan[i].std.fb.val;
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
}
if (chan[i].std.fms.had) {
chan[i].state.fms=chan[i].std.fms.val;
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
}
if (chan[i].std.ams.had) {
chan[i].state.ams=chan[i].std.ams.val;
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
}
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[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(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
if (m.ar.had) {
op.ar=m.ar.val;
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
if (m.dr.had) {
op.dr=m.dr.val;
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
if (m.mult.had) {
op.mult=m.mult.val;
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
if (m.rr.had) {
op.rr=m.rr.val;
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
if (m.sl.had) {
op.sl=m.sl.val;
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
if (m.tl.had) {
op.tl=127-m.tl.val;
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
if (m.rs.had) {
op.rs=m.rs.val;
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
if (m.dt.had) {
op.dt=m.dt.val;
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
if (m.d2r.had) {
op.d2r=m.d2r.val;
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
}
if (m.ssg.had) {
op.ssgEnv=m.ssg.val;
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
}
}
for (int i=0; i<512; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
for (int i=0; i<6; i++) {
if (i==2 && extMode) continue;
if (chan[i].keyOn || chan[i].keyOff) {
if (chan[i].hardReset && chan[i].keyOn) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
immWrite(baseAddr+ADDR_SL_RR,0x0f);
immWrite(baseAddr+ADDR_TL,0x7f);
oldWrites[baseAddr+ADDR_SL_RR]=-1;
oldWrites[baseAddr+ADDR_TL]=-1;
//rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
}
immWrite(0x28,0x00|konOffs[i]);
if (chan[i].hardReset && chan[i].keyOn) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
for (int k=0; k<5; k++) {
immWrite(baseAddr+ADDR_SL_RR,0x0f);
}
}
}
chan[i].keyOff=false;
}
}
for (int i=0; i<7; i++) {
if (i==2 && extMode) continue;
if (chan[i].freqChanged) {
if (parent->song.linearPitch==2) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE,11);
} else {
int fNum=parent->calcFreq(chan[i].baseFreq&0x7ff,chan[i].pitch,false,2,chan[i].pitch2,chipClock,CHIP_FREQBASE,11);
int block=(chan[i].baseFreq&0xf800)>>11;
if (fNum<0) fNum=0;
if (fNum>2047) {
while (block<7) {
fNum>>=1;
block++;
}
if (fNum>2047) fNum=2047;
}
chan[i].freq=(block<<11)|fNum;
}
if (chan[i].freq>0x3fff) chan[i].freq=0x3fff;
if (i<6) {
immWrite(chanOffs[i]+ADDR_FREQH,chan[i].freq>>8);
immWrite(chanOffs[i]+ADDR_FREQ,chan[i].freq&0xff);
}
if (chan[i].furnaceDac && chan[i].dacMode) {
double off=1.0;
if (chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->centerRate<1) {
off=1.0;
} else {
off=(double)s->centerRate/8363.0;
}
}
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,1,1);
chan[i].dacRate=chan[i].freq*off;
if (chan[i].dacRate<1) chan[i].dacRate=1;
if (dumpWrites) addWrite(0xffff0001,chan[i].dacRate);
}
chan[i].freqChanged=false;
}
if (chan[i].keyOn) {
if (i<6) immWrite(0x28,0xf0|konOffs[i]);
chan[i].keyOn=false;
}
}
}
void DivPlatformGenesis::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
if (ch>6) return;
if (ch<6) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[ch]|opOffs[j];
DivInstrumentFM::Operator& op=chan[ch].state.op[j];
if (isMuted[ch]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[ch].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[ch].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
} else {
ch--;
}
rWrite(chanOffs[ch]+ADDR_LRAF,(IS_REALLY_MUTED(ch)?0:(chan[ch].pan<<6))|(chan[ch].state.fms&7)|((chan[ch].state.ams&3)<<4));
}
int DivPlatformGenesis::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_FM);
if (c.chan==7 && extMode && softPCM) { // CSM
chan[c.chan].macroInit(ins);
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
chan[c.chan].portaPause=false;
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].keyOn=true;
chan[c.chan].active=true;
break;
}
if (c.chan>=5) {
if (ins->type==DIV_INS_AMIGA) {
chan[c.chan].dacMode=1;
rWrite(0x2b,1<<7);
} else if (chan[c.chan].furnaceDac) {
chan[c.chan].dacMode=0;
rWrite(0x2b,0<<7);
}
}
if (c.chan>=5 && chan[c.chan].dacMode) {
if (skipRegisterWrites) break;
if (ins->type==DIV_INS_AMIGA) { // Furnace mode
chan[c.chan].dacSample=ins->amiga.getSample(c.value);
if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
break;
} else {
rWrite(0x2b,1<<7);
if (dumpWrites) addWrite(0xffff0000,chan[c.chan].dacSample);
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=parent->calcBaseFreq(1,1,c.value,false);
chan[c.chan].portaPause=false;
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
}
chan[c.chan].furnaceDac=true;
chan[c.chan].macroInit(ins);
if (!chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
// ???
//chan[c.chan].keyOn=true;
chan[c.chan].active=true;
} else { // compatible mode
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
}
chan[c.chan].dacSample=12*chan[c.chan].sampleBank+chan[c.chan].note%12;
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
break;
} else {
rWrite(0x2b,1<<7);
if (dumpWrites) addWrite(0xffff0000,chan[c.chan].dacSample);
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=MAX(1,parent->getSample(chan[c.chan].dacSample)->rate);
if (dumpWrites) addWrite(0xffff0001,parent->getSample(chan[c.chan].dacSample)->rate);
chan[c.chan].furnaceDac=false;
}
break;
}
if (c.chan>=6) break;
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;
}
for (int i=0; i<4; i++) {
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[c.chan].state.alg][i]) {
if (!chan[c.chan].active || chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
}
} else {
if (chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
if (chan[c.chan].insChanged) {
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
}
if (chan[c.chan].insChanged) {
rWrite(chanOffs[c.chan]+ADDR_FB_ALG,(chan[c.chan].state.alg&7)|(chan[c.chan].state.fb<<3));
rWrite(chanOffs[c.chan]+ADDR_LRAF,(IS_REALLY_MUTED(c.chan)?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
}
chan[c.chan].insChanged=false;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_FNUM_BLOCK(c.value,11);
chan[c.chan].portaPause=false;
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:
if (c.chan>=5 && c.chan<7) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
if (parent->song.brokenDACMode) {
rWrite(0x2b,0);
if (chan[c.chan].dacMode) break;
}
}
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
break;
case DIV_CMD_NOTE_OFF_ENV:
if (c.chan>=5) {
chan[c.chan].dacSample=-1;
if (dumpWrites) addWrite(0xffff0002,0);
}
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: {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
}
if (c.chan>=6) break;
for (int i=0; i<4; i++) {
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[c.chan].state.alg][i]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
}
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_PANNING: {
if (c.chan>5) c.chan=5;
if (c.value==0 && c.value2==0) {
chan[c.chan].pan=3;
} else {
chan[c.chan].pan=(c.value2>0)|((c.value>0)<<1);
}
rWrite(chanOffs[c.chan]+ADDR_LRAF,(IS_REALLY_MUTED(c.chan)?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
break;
}
case DIV_CMD_PITCH: {
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_NOTE_PORTA: {
if (parent->song.linearPitch==2) {
int destFreq=NOTE_FREQUENCY(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;
}
if (c.chan==7) {
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;
}
if (c.chan>=5 && chan[c.chan].furnaceDac && chan[c.chan].dacMode) {
int destFreq=parent->calcBaseFreq(1,1,c.value2,false);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value*16;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value*16;
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;
}
PLEASE_HELP_ME(chan[c.chan]);
break;
}
case DIV_CMD_SAMPLE_MODE: {
if (c.chan<5) c.chan=5;
chan[c.chan].dacMode=c.value;
rWrite(0x2b,c.value<<7);
break;
}
case DIV_CMD_SAMPLE_BANK:
if (c.chan<5) c.chan=5;
chan[c.chan].sampleBank=c.value;
if (chan[c.chan].sampleBank>(parent->song.sample.size()/12)) {
chan[c.chan].sampleBank=parent->song.sample.size()/12;
}
break;
case DIV_CMD_SAMPLE_DIR: {
if (c.chan<5) c.chan=5;
chan[c.chan].dacDirection=c.value;
if (dumpWrites) addWrite(0xffff0003,chan[c.chan].dacDirection);
break;
}
case DIV_CMD_LEGATO: {
if (c.chan==7) {
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
} else if (c.chan>=5 && chan[c.chan].furnaceDac && chan[c.chan].dacMode) {
chan[c.chan].baseFreq=parent->calcBaseFreq(1,1,c.value,false);
} else {
chan[c.chan].baseFreq=NOTE_FNUM_BLOCK(c.value,11);
}
chan[c.chan].note=c.value;
chan[c.chan].freqChanged=true;
break;
}
case DIV_CMD_FM_EXTCH: {
if (extSys) {
extMode=c.value;
immWrite(0x27,extMode?0x40:0);
}
break;
}
case DIV_CMD_FM_LFO: {
if (c.chan>=6) break;
lfoValue=(c.value&7)|((c.value>>4)<<3);
rWrite(0x22,lfoValue);
break;
}
case DIV_CMD_FM_FB: {
if (c.chan>=6) break;
chan[c.chan].state.fb=c.value&7;
rWrite(chanOffs[c.chan]+ADDR_FB_ALG,(chan[c.chan].state.alg&7)|(chan[c.chan].state.fb<<3));
break;
}
case DIV_CMD_FM_MULT: {
if (c.chan>=6) break;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.mult=c.value2&15;
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
break;
}
case DIV_CMD_FM_TL: {
if (c.chan>=6) break;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.tl=c.value2;
if (isMuted[c.chan]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[c.chan].state.alg][c.value]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[c.chan].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
break;
}
case DIV_CMD_FM_AR: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.ar=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.ar=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
break;
}
case DIV_CMD_FM_RS: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.rs=c.value2&3;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.rs=c.value2&3;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
}
break;
}
case DIV_CMD_FM_AM: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.am=c.value2&1;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.am=c.value2&1;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
break;
}
case DIV_CMD_FM_DR: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.dr=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.dr=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
}
break;
}
case DIV_CMD_FM_SL: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.sl=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.sl=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
break;
}
case DIV_CMD_FM_RR: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.rr=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.rr=c.value2&15;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
}
break;
}
case DIV_CMD_FM_D2R: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.d2r=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.d2r=c.value2&31;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
}
break;
}
case DIV_CMD_FM_DT: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.dt=c.value&7;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.dt=c.value2&7;
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
}
break;
}
case DIV_CMD_FM_SSG: {
if (c.chan>=6) break;
if (c.value<0) {
for (int i=0; i<4; i++) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[i];
op.ssgEnv=8^(c.value2&15);
unsigned short baseAddr=chanOffs[c.chan]|opOffs[i];
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
} else if (c.value<4) {
DivInstrumentFM::Operator& op=chan[c.chan].state.op[orderedOps[c.value]];
op.ssgEnv=8^(c.value2&15);
unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
break;
}
case DIV_CMD_FM_HARD_RESET:
if (c.chan>=6) break;
chan[c.chan].hardReset=c.value;
break;
case DIV_ALWAYS_SET_VOLUME:
return 0;
break;
case DIV_CMD_GET_VOLMAX:
return 127;
break;
case DIV_CMD_PRE_PORTA:
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 DivPlatformGenesis::forceIns() {
for (int i=0; i<6; i++) {
for (int j=0; j<4; j++) {
unsigned short baseAddr=chanOffs[i]|opOffs[j];
DivInstrumentFM::Operator& op=chan[i].state.op[j];
if (isMuted[i]) {
rWrite(baseAddr+ADDR_TL,127);
} else {
if (isOutput[chan[i].state.alg][j]) {
rWrite(baseAddr+ADDR_TL,127-VOL_SCALE_LOG(127-op.tl,chan[i].outVol&0x7f,127));
} else {
rWrite(baseAddr+ADDR_TL,op.tl);
}
}
rWrite(baseAddr+ADDR_MULT_DT,(op.mult&15)|(dtTable[op.dt&7]<<4));
rWrite(baseAddr+ADDR_RS_AR,(op.ar&31)|(op.rs<<6));
rWrite(baseAddr+ADDR_AM_DR,(op.dr&31)|(op.am<<7));
rWrite(baseAddr+ADDR_DT2_D2R,op.d2r&31);
rWrite(baseAddr+ADDR_SL_RR,(op.rr&15)|(op.sl<<4));
rWrite(baseAddr+ADDR_SSG,op.ssgEnv&15);
}
rWrite(chanOffs[i]+ADDR_FB_ALG,(chan[i].state.alg&7)|(chan[i].state.fb<<3));
rWrite(chanOffs[i]+ADDR_LRAF,(IS_REALLY_MUTED(i)?0:(chan[i].pan<<6))|(chan[i].state.fms&7)|((chan[i].state.ams&3)<<4));
if (chan[i].active) {
chan[i].keyOn=true;
chan[i].freqChanged=true;
}
}
if (chan[5].dacMode) {
rWrite(0x2b,0x80);
}
immWrite(0x22,lfoValue);
}
void DivPlatformGenesis::toggleRegisterDump(bool enable) {
DivDispatch::toggleRegisterDump(enable);
}
void* DivPlatformGenesis::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformGenesis::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformGenesis::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformGenesis::getRegisterPool() {
return regPool;
}
int DivPlatformGenesis::getRegisterPoolSize() {
return 512;
}
void DivPlatformGenesis::reset() {
while (!writes.empty()) writes.pop_front();
memset(regPool,0,512);
if (useYMFM) {
fm_ymfm->reset();
}
OPN2_Reset(&fm);
OPN2_SetChipType(ladder?ym3438_mode_ym2612:0);
if (dumpWrites) {
addWrite(0xffffffff,0);
}
for (int i=0; i<10; i++) {
chan[i]=DivPlatformGenesis::Channel();
chan[i].std.setEngine(parent);
chan[i].vol=0x7f;
chan[i].outVol=0x7f;
}
for (int i=0; i<512; i++) {
oldWrites[i]=-1;
pendingWrites[i]=-1;
}
lastBusy=60;
lfoValue=8;
softPCMTimer=0;
extMode=false;
if (softPCM) {
chan[5].dacMode=true;
chan[6].dacMode=true;
}
// normal sample direction
if (dumpWrites) addWrite(0xffff0003,0);
// LFO
immWrite(0x22,lfoValue);
delay=0;
}
bool DivPlatformGenesis::isStereo() {
return true;
}
bool DivPlatformGenesis::keyOffAffectsArp(int ch) {
return (ch>5);
}
bool DivPlatformGenesis::keyOffAffectsPorta(int ch) {
return (ch>5);
}
void DivPlatformGenesis::notifyInsChange(int ins) {
for (int i=0; i<10; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
}
}
}
void DivPlatformGenesis::notifyInsDeletion(void* ins) {
}
void DivPlatformGenesis::poke(unsigned int addr, unsigned short val) {
immWrite(addr,val);
}
void DivPlatformGenesis::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) immWrite(i.addr,i.val);
}
int DivPlatformGenesis::getPortaFloor(int ch) {
return (ch>5)?12:0;
}
void DivPlatformGenesis::setYMFM(bool use) {
useYMFM=use;
}
void DivPlatformGenesis::setSoftPCM(bool value) {
softPCM=value;
}
void DivPlatformGenesis::setFlags(unsigned int flags) {
switch (flags&(~0x80000000)) {
default:
case 0: chipClock=COLOR_NTSC*15.0/7.0; break;
case 1: chipClock=COLOR_PAL*12.0/7.0; break;
case 2: chipClock=8000000.0; break;
case 3: chipClock=COLOR_NTSC*12.0/7.0; break;
case 4: chipClock=COLOR_NTSC*9.0/4.0; break;
}
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;
}
for (int i=0; i<10; i++) {
oscBuf[i]->rate=rate;
}
}
int DivPlatformGenesis::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
parent=p;
dumpWrites=false;
ladder=false;
skipRegisterWrites=false;
for (int i=0; i<10; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
fm_ymfm=NULL;
setFlags(flags);
for (int i=0; i<128; i++) {
dacVolTable[127-i]=128*pow(10.0f,(float)(-i)*0.75f/20.0f);
}
dacVolTable[0]=0;
reset();
return 10;
}
void DivPlatformGenesis::quit() {
for (int i=0; i<10; i++) {
delete oscBuf[i];
}
if (fm_ymfm!=NULL) delete fm_ymfm;
}
DivPlatformGenesis::~DivPlatformGenesis() {
}
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