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implement Furnace-style PCM on Arcade/Gen/NES/PCE

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This commit is contained in:
tildearrow 2022-01-20 16:09:05 -05:00
parent 812d0397a8
commit 0f28ae0fee
8 changed files with 132 additions and 39 deletions
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37
src/engine/platform/pce.cpp
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@ -127,6 +127,9 @@ void DivPlatformPCE::tick() {
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins);
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
if (chan[i].furnaceDac) {
chan[i].dacRate=chan[i].freq;
}
if (chan[i].freq>4095) chan[i].freq=4095;
if (chan[i].note>0x5d) chan[i].freq=0x01;
chWrite(i,0x02,chan[i].freq&0xff);
@ -153,14 +156,34 @@ int DivPlatformPCE::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON:
if (chan[c.chan].pcm) {
chan[c.chan].dacSample=12*sampleBank+c.value%12;
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
break;
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
if (ins->type==DIV_INS_AMIGA) {
chan[c.chan].dacSample=ins->amiga.initSample;
if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
break;
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(FREQ_BASE/pow(2.0f,((float)c.value/12.0f)));
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
chan[c.chan].furnaceDac=true;
} else {
chan[c.chan].dacSample=12*sampleBank+c.value%12;
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
chan[c.chan].dacSample=-1;
break;
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=1789773/parent->song.sample[chan[c.chan].dacSample]->rate;
chan[c.chan].furnaceDac=false;
}
chan[c.chan].dacPos=0;
chan[c.chan].dacPeriod=0;
chan[c.chan].dacRate=1789773/parent->song.sample[chan[c.chan].dacSample]->rate;
break;
}
if (c.value!=DIV_NOTE_NULL) {