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add SegaPCM commands 

let's hope it works
This commit is contained in:
tildearrow 2022-01-24 13:06:06 -05:00
parent 993ab767b6
commit fedc045909
1 changed files with 43 additions and 2 deletions
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45
src/engine/platform/arcade.cpp
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@ -207,6 +207,9 @@ void DivPlatformArcade::tick() {
chan[i].freq=chan[i].baseFreq+(chan[i].pitch>>1)-64;
if (chan[i].furnacePCM) {
chan[i].pcm.freq=MIN(255,((440.0*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250);
if (dumpWrites && i>=8) {
addWrite(0x10007+((i-8)<<3),chan[i].pcm.freq);
}
}
chan[i].freqChanged=false;
}
@ -226,6 +229,7 @@ void DivPlatformArcade::muteChannel(int ch, bool mute) {
}
int DivPlatformArcade::dispatch(DivCommand c) {
int pcmChan=c.chan-8;
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
@ -235,6 +239,9 @@ int DivPlatformArcade::dispatch(DivCommand c) {
chan[c.chan].pcm.sample=ins->amiga.initSample;
if (chan[c.chan].pcm.sample<0 || chan[c.chan].pcm.sample>=parent->song.sampleLen) {
chan[c.chan].pcm.sample=-1;
if (dumpWrites) {
addWrite(0x10086+(pcmChan<<3),1);
}
break;
}
chan[c.chan].pcm.pos=0;
@ -243,18 +250,31 @@ int DivPlatformArcade::dispatch(DivCommand c) {
chan[c.chan].furnacePCM=true;
if (dumpWrites) { // Sega PCM writes
DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
// TODO: THIS!!!
addWrite(0x10084,s->rendOffP);
addWrite(0x10084+(c.chan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10085+(c.chan<<3),(s->rendOffP>>16)&0xff);
addWrite(0x10006+(c.chan<<3),(MIN(65536,((s->rendLength+0xff)&(~0xff)))>>8)-1);
addWrite(0x10086+(c.chan<<3),0);
}
} else {
chan[c.chan].pcm.sample=12*sampleBank+c.value%12;
if (chan[c.chan].pcm.sample>=parent->song.sampleLen) {
chan[c.chan].pcm.sample=-1;
if (dumpWrites) {
addWrite(0x10086+(pcmChan<<3),1);
}
break;
}
chan[c.chan].pcm.pos=0;
chan[c.chan].pcm.freq=MIN(255,(parent->song.sample[chan[c.chan].pcm.sample]->rate*255)/31250);
chan[c.chan].furnacePCM=false;
if (dumpWrites) { // Sega PCM writes
DivSample* s=parent->song.sample[chan[c.chan].pcm.sample];
addWrite(0x10084+(pcmChan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10085+(pcmChan<<3),(s->rendOffP>>16)&0xff);
addWrite(0x10006+(pcmChan<<3),(MIN(65536,((s->rendLength+0xff)&(~0xff)))>>8)-1);
addWrite(0x10086+(pcmChan<<3),0);
addWrite(0x10007+(pcmChan<<3),chan[c.chan].pcm.freq);
}
}
break;
}
@ -300,6 +320,9 @@ int DivPlatformArcade::dispatch(DivCommand c) {
case DIV_CMD_NOTE_OFF:
if (c.chan>7) {
chan[c.chan].pcm.sample=-1;
if (dumpWrites) {
addWrite(0x10086+(pcmChan<<3),1);
}
}
chan[c.chan].keyOff=true;
chan[c.chan].active=false;
@ -309,6 +332,10 @@ int DivPlatformArcade::dispatch(DivCommand c) {
if (c.chan>7) {
chan[c.chan].chVolL=c.value;
chan[c.chan].chVolR=c.value;
if (dumpWrites) {
addWrite(0x10002+(pcmChan<<3),chan[c.chan].chVolL);
addWrite(0x10003+(pcmChan<<3),chan[c.chan].chVolR);
}
break;
}
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
@ -338,6 +365,10 @@ int DivPlatformArcade::dispatch(DivCommand c) {
if (c.chan>7) {
chan[c.chan].chVolL=(c.value>>4)|(((c.value>>4)>>1)<<4);
chan[c.chan].chVolR=(c.value&15)|(((c.value&15)>>1)<<4);
if (dumpWrites) {
addWrite(0x10002+(pcmChan<<3),chan[c.chan].chVolL);
addWrite(0x10003+(pcmChan<<3),chan[c.chan].chVolR);
}
} else {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
chan[c.chan].chVolL=((c.value>>4)==1);
@ -468,6 +499,9 @@ int DivPlatformArcade::dispatch(DivCommand c) {
break;
case DIV_CMD_SAMPLE_FREQ:
chan[c.chan].pcm.freq=c.value;
if (dumpWrites) {
addWrite(0x10007+(pcmChan<<3),chan[c.chan].pcm.freq);
}
break;
default:
//printf("WARNING: unimplemented command %d\n",c.cmd);
@ -523,6 +557,13 @@ void DivPlatformArcade::reset() {
immWrite(0x19,amDepth);
immWrite(0x19,0x80|pmDepth);
//rWrite(0x1b,0x00);
if (dumpWrites) {
for (int i=0; i<5; i++) {
addWrite(0x10086+(i<<3),1);
addWrite(0x10002+(i<<3),0x7f);
addWrite(0x10003+(i<<3),0x7f);
}
}
extMode=false;
}