mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-16 09:45:06 +00:00
312 lines
No EOL
8.4 KiB
C++
312 lines
No EOL
8.4 KiB
C++
#include "ym2610ext.h"
|
|
#include "../engine.h"
|
|
#include <math.h>
|
|
|
|
#include "ym2610shared.h"
|
|
|
|
int DivPlatformYM2610Ext::dispatch(DivCommand c) {
|
|
if (c.chan<1) {
|
|
return DivPlatformYM2610::dispatch(c);
|
|
}
|
|
if (c.chan>4) {
|
|
c.chan-=3;
|
|
return DivPlatformYM2610::dispatch(c);
|
|
}
|
|
int ch=c.chan-1;
|
|
int ordch=orderedOps[ch];
|
|
switch (c.cmd) {
|
|
case DIV_CMD_NOTE_ON: {
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[ordch];
|
|
DivInstrumentFM::Operator op=ins->fm.op[ordch];
|
|
if (isOpMuted[ch]) {
|
|
rWrite(baseAddr+0x40,127);
|
|
} else if (isOutput[ins->fm.alg][ordch]) {
|
|
if (!opChan[ch].active || opChan[ch].insChanged) {
|
|
rWrite(baseAddr+0x40,127-(((127-op.tl)*(opChan[ch].vol&0x7f))/127));
|
|
}
|
|
} else {
|
|
if (opChan[ch].insChanged) {
|
|
rWrite(baseAddr+0x40,op.tl);
|
|
}
|
|
}
|
|
if (opChan[ch].insChanged) {
|
|
rWrite(baseAddr+0x30,(op.mult&15)|(dtTable[op.dt&7]<<4));
|
|
rWrite(baseAddr+0x50,(op.ar&31)|(op.rs<<6));
|
|
rWrite(baseAddr+0x60,(op.dr&31)|(op.am<<7));
|
|
rWrite(baseAddr+0x70,op.d2r&31);
|
|
rWrite(baseAddr+0x80,(op.rr&15)|(op.sl<<4));
|
|
rWrite(baseAddr+0x90,op.ssgEnv&15);
|
|
}
|
|
if (opChan[ch].insChanged) { // TODO how does this work?
|
|
rWrite(chanOffs[1]+0xb0,(ins->fm.alg&7)|(ins->fm.fb<<3));
|
|
rWrite(chanOffs[1]+0xb4,(opChan[ch].pan<<6)|(ins->fm.fms&7)|((ins->fm.ams&3)<<4));
|
|
}
|
|
opChan[ch].insChanged=false;
|
|
|
|
opChan[ch].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value/12.0f));
|
|
opChan[ch].freqChanged=true;
|
|
opChan[ch].keyOn=true;
|
|
opChan[ch].active=true;
|
|
break;
|
|
}
|
|
case DIV_CMD_NOTE_OFF:
|
|
opChan[ch].keyOff=true;
|
|
opChan[ch].active=false;
|
|
break;
|
|
case DIV_CMD_VOLUME: {
|
|
opChan[ch].vol=c.value;
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[ordch];
|
|
DivInstrumentFM::Operator op=ins->fm.op[ordch];
|
|
if (isOpMuted[ch]) {
|
|
rWrite(baseAddr+0x40,127);
|
|
} else if (isOutput[ins->fm.alg][ordch]) {
|
|
rWrite(baseAddr+0x40,127-(((127-op.tl)*(opChan[ch].vol&0x7f))/127));
|
|
} else {
|
|
rWrite(baseAddr+0x40,op.tl);
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_GET_VOLUME: {
|
|
return opChan[ch].vol;
|
|
break;
|
|
}
|
|
case DIV_CMD_INSTRUMENT:
|
|
if (opChan[ch].ins!=c.value || c.value2==1) {
|
|
opChan[ch].insChanged=true;
|
|
}
|
|
opChan[ch].ins=c.value;
|
|
break;
|
|
case DIV_CMD_PANNING: {
|
|
switch (c.value) {
|
|
case 0x01:
|
|
opChan[ch].pan=1;
|
|
break;
|
|
case 0x10:
|
|
opChan[ch].pan=2;
|
|
break;
|
|
default:
|
|
opChan[ch].pan=3;
|
|
break;
|
|
}
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
// TODO: ???
|
|
rWrite(chanOffs[1]+0xb4,(opChan[ch].pan<<6)|(ins->fm.fms&7)|((ins->fm.ams&3)<<4));
|
|
break;
|
|
}
|
|
case DIV_CMD_PITCH: {
|
|
opChan[ch].pitch=c.value;
|
|
opChan[ch].freqChanged=true;
|
|
break;
|
|
}
|
|
case DIV_CMD_NOTE_PORTA: {
|
|
int destFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value2/12.0f));
|
|
int newFreq;
|
|
bool return2=false;
|
|
if (destFreq>opChan[ch].baseFreq) {
|
|
newFreq=opChan[ch].baseFreq+c.value*octave(opChan[ch].baseFreq);
|
|
if (newFreq>=destFreq) {
|
|
newFreq=destFreq;
|
|
return2=true;
|
|
}
|
|
} else {
|
|
newFreq=opChan[ch].baseFreq-c.value*octave(opChan[ch].baseFreq);
|
|
if (newFreq<=destFreq) {
|
|
newFreq=destFreq;
|
|
return2=true;
|
|
}
|
|
}
|
|
if (!opChan[ch].portaPause) {
|
|
if (octave(opChan[ch].baseFreq)!=octave(newFreq)) {
|
|
opChan[ch].portaPause=true;
|
|
break;
|
|
}
|
|
}
|
|
opChan[ch].baseFreq=newFreq;
|
|
opChan[ch].portaPause=false;
|
|
opChan[ch].freqChanged=true;
|
|
if (return2) return 2;
|
|
break;
|
|
}
|
|
case DIV_CMD_SAMPLE_MODE: {
|
|
// ignored on extended channel 2 mode.
|
|
break;
|
|
}
|
|
case DIV_CMD_LEGATO: {
|
|
opChan[ch].baseFreq=FM_FREQ_BASE*pow(2.0f,((float)c.value/12.0f));
|
|
opChan[ch].freqChanged=true;
|
|
break;
|
|
}
|
|
case DIV_CMD_FM_MULT: { // TODO
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[orderedOps[c.value]];
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
DivInstrumentFM::Operator op=ins->fm.op[orderedOps[c.value]];
|
|
rWrite(baseAddr+0x30,(c.value2&15)|(dtTable[op.dt&7]<<4));
|
|
break;
|
|
}
|
|
case DIV_CMD_FM_TL: { // TODO
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[orderedOps[c.value]];
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
if (isOutput[ins->fm.alg][c.value]) {
|
|
rWrite(baseAddr+0x40,127-(((127-c.value2)*(opChan[ch].vol&0x7f))/127));
|
|
} else {
|
|
rWrite(baseAddr+0x40,c.value2);
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_FM_AR: {
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
if (c.value<0) {
|
|
for (int i=0; i<4; i++) {
|
|
DivInstrumentFM::Operator op=ins->fm.op[i];
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[i];
|
|
rWrite(baseAddr+0x50,(c.value2&31)|(op.rs<<6));
|
|
}
|
|
} else {
|
|
DivInstrumentFM::Operator op=ins->fm.op[orderedOps[c.value]];
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[orderedOps[c.value]];
|
|
rWrite(baseAddr+0x50,(c.value2&31)|(op.rs<<6));
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_GET_VOLMAX:
|
|
return 127;
|
|
break;
|
|
case DIV_ALWAYS_SET_VOLUME:
|
|
return 0;
|
|
break;
|
|
case DIV_CMD_PRE_PORTA:
|
|
break;
|
|
default:
|
|
//printf("WARNING: unimplemented command %d\n",c.cmd);
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int opChanOffsL[4]={
|
|
0xa9, 0xaa, 0xa8, 0xa2
|
|
};
|
|
|
|
static int opChanOffsH[4]={
|
|
0xad, 0xae, 0xac, 0xa6
|
|
};
|
|
|
|
void DivPlatformYM2610Ext::tick() {
|
|
if (extMode) {
|
|
bool writeSomething=false;
|
|
unsigned char writeMask=2;
|
|
for (int i=0; i<4; i++) {
|
|
writeMask|=opChan[i].active<<(4+i);
|
|
if (opChan[i].keyOn || opChan[i].keyOff) {
|
|
writeSomething=true;
|
|
writeMask&=~(1<<(4+i));
|
|
opChan[i].keyOff=false;
|
|
}
|
|
}
|
|
if (writeSomething) {
|
|
immWrite(0x28,writeMask);
|
|
}
|
|
}
|
|
|
|
DivPlatformYM2610::tick();
|
|
|
|
bool writeNoteOn=false;
|
|
unsigned char writeMask=2;
|
|
if (extMode) for (int i=0; i<4; i++) {
|
|
if (opChan[i].freqChanged) {
|
|
opChan[i].freq=parent->calcFreq(opChan[i].baseFreq,opChan[i].pitch);
|
|
int freqt=toFreq(opChan[i].freq);
|
|
opChan[i].freqH=freqt>>8;
|
|
opChan[i].freqL=freqt&0xff;
|
|
immWrite(opChanOffsH[i],opChan[i].freqH);
|
|
immWrite(opChanOffsL[i],opChan[i].freqL);
|
|
opChan[i].freqChanged=false;
|
|
}
|
|
writeMask|=opChan[i].active<<(4+i);
|
|
if (opChan[i].keyOn) {
|
|
writeNoteOn=true;
|
|
writeMask|=1<<(4+i);
|
|
opChan[i].keyOn=false;
|
|
}
|
|
}
|
|
if (writeNoteOn) {
|
|
immWrite(0x28,writeMask);
|
|
}
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::muteChannel(int ch, bool mute) {
|
|
if (ch<1) {
|
|
DivPlatformYM2610::muteChannel(ch,mute);
|
|
return;
|
|
}
|
|
if (ch>4) {
|
|
DivPlatformYM2610::muteChannel(ch-3,mute);
|
|
return;
|
|
}
|
|
isOpMuted[ch-1]=mute;
|
|
|
|
int ordch=orderedOps[ch-1];
|
|
DivInstrument* ins=parent->getIns(opChan[ch].ins);
|
|
unsigned short baseAddr=chanOffs[1]|opOffs[ordch];
|
|
DivInstrumentFM::Operator op=ins->fm.op[ordch];
|
|
if (isOpMuted[ch]) {
|
|
rWrite(baseAddr+0x40,127);
|
|
} else if (isOutput[ins->fm.alg][ordch]) {
|
|
rWrite(baseAddr+0x40,127-(((127-op.tl)*(opChan[ch].vol&0x7f))/127));
|
|
} else {
|
|
rWrite(baseAddr+0x40,op.tl);
|
|
}
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::forceIns() {
|
|
DivPlatformYM2610::forceIns();
|
|
for (int i=0; i<4; i++) {
|
|
opChan[i].insChanged=true;
|
|
}
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::reset() {
|
|
DivPlatformYM2610::reset();
|
|
|
|
for (int i=0; i<4; i++) {
|
|
opChan[i]=DivPlatformYM2610Ext::OpChannel();
|
|
opChan[i].vol=127;
|
|
}
|
|
|
|
// channel 2 mode
|
|
immWrite(0x27,0x40);
|
|
extMode=true;
|
|
}
|
|
|
|
bool DivPlatformYM2610Ext::keyOffAffectsArp(int ch) {
|
|
return (ch>7);
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::notifyInsChange(int ins) {
|
|
DivPlatformYM2610::notifyInsChange(ins);
|
|
for (int i=0; i<4; i++) {
|
|
if (opChan[i].ins==ins) {
|
|
opChan[i].insChanged=true;
|
|
}
|
|
}
|
|
}
|
|
|
|
int DivPlatformYM2610Ext::init(DivEngine* parent, int channels, int sugRate, bool pal) {
|
|
DivPlatformYM2610::init(parent,channels,sugRate,pal);
|
|
for (int i=0; i<4; i++) {
|
|
isOpMuted[i]=false;
|
|
}
|
|
|
|
reset();
|
|
return 16;
|
|
}
|
|
|
|
void DivPlatformYM2610Ext::quit() {
|
|
DivPlatformYM2610::quit();
|
|
}
|
|
|
|
DivPlatformYM2610Ext::~DivPlatformYM2610Ext() {
|
|
} |