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Dave: implement sample offset

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tildearrow 2024-04-23 19:55:17 -05:00
parent a88b63cf31
commit 41e59cee5f
2 changed files with 18 additions and 5 deletions
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18
src/engine/platform/dave.cpp
View file

@ -70,7 +70,7 @@ void DivPlatformDave::acquire(short** buf, size_t len) {
chan[i].dacPeriod+=chan[i].dacRate;
while (chan[i].dacPeriod>rate) {
DivSample* s=parent->getSample(chan[i].dacSample);
if (s->samples<=0) {
if (s->samples<=0 || chan[i].dacPos>=s->samples) {
chan[i].dacSample=-1;
writeControl=true;
chan[0].writeVol=true;
@ -196,7 +196,11 @@ void DivPlatformDave::tick(bool sysTick) {
if (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1) {
if (i>=4) {
if (chan[i].active && chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
chan[i].dacPos=0;
if (chan[i].setPos) {
chan[i].setPos=false;
} else {
chan[i].dacPos=0;
}
chan[i].dacPeriod=0;
chan[i].keyOn=true;
}
@ -324,7 +328,11 @@ int DivPlatformDave::dispatch(DivCommand c) {
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].dacPos=0;
if (chan[c.chan].setPos) {
chan[c.chan].setPos=false;
} else {
chan[c.chan].dacPos=0;
}
chan[c.chan].dacPeriod=0;
writeControl=true;
} else {
@ -459,6 +467,10 @@ int DivPlatformDave::dispatch(DivCommand c) {
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_SAMPLE_POS:
chan[c.chan].dacPos=c.value;
chan[c.chan].setPos=true;
break;
case DIV_CMD_GET_VOLMAX:
return 63;
break;

5
src/engine/platform/dave.h
View file

@ -33,7 +33,7 @@ class DivPlatformDave: public DivDispatch {
unsigned char panL;
unsigned char panR;
unsigned char wave;
bool writeVol, highPass, ringMod, swapCounters, lowPass, resetPhase;
bool writeVol, highPass, ringMod, swapCounters, lowPass, resetPhase, setPos;
Channel():
SharedChannel<signed char>(63),
dacPeriod(0),
@ -50,7 +50,8 @@ class DivPlatformDave: public DivDispatch {
ringMod(false),
swapCounters(false),
lowPass(false),
resetPhase(false) {}
resetPhase(false),
setPos(false) {}
};
Channel chan[6];
DivDispatchOscBuffer* oscBuf[6];