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total extinction of legacy sample mode, part 5

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partially working converter
This commit is contained in:
tildearrow 2025-11-09 05:23:32 -05:00
parent 734f36b483
commit 0f5455831a
9 changed files with 279 additions and 119 deletions
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142
src/engine/platform/segapcm.cpp
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@ -78,11 +78,15 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
if (NEW_ARP_STRAT) {
chan[i].handleArp();
if (chan[i].std.arp.had) {
if (chan[i].freqChanged) chan[i].pcm.freq=-1;
}
} else if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=(parent->calcArp(chan[i].note,chan[i].std.arp.val)<<7);
}
chan[i].freqChanged=true;
chan[i].pcm.freq=-1;
}
if (parent->song.newSegaPCM) if (chan[i].std.panL.had) {
@ -105,6 +109,7 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
chan[i].pcm.freq=-1;
}
if (chan[i].std.phaseReset.had) {
@ -123,12 +128,13 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
}
}
if (oldSlides) chan[i].freq&=~1;
if (chan[i].furnacePCM) {
double off=1.0;
if (chan[i].pcm.sample>=0 && chan[i].pcm.sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].pcm.sample);
off=(double)s->centerRate/parent->getCenterRate();
}
double off=1.0;
if (chan[i].pcm.sample>=0 && chan[i].pcm.sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].pcm.sample);
off=(double)s->centerRate/parent->getCenterRate();
}
if (chan[i].pcm.freq==-1) {
chan[i].pcm.freq=MIN(255,((rate*0.5)+(off*parent->song.tuning*pow(2.0,double(chan[i].freq+512)/(128.0*12.0)))*255)/rate)+(oldSlides?chan[i].pitch2:0);
rWrite(7+(i<<3),chan[i].pcm.freq);
}
@ -141,44 +147,23 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
} else {
chan[i].pcm.pos=0;
}
if (chan[i].furnacePCM) {
DivSample* s=parent->getSample(chan[i].pcm.sample);
int loopStart=s->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT);
int actualLength=(s->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT));
if (actualLength>0xfeff) actualLength=0xfeff;
int actualPos=sampleOffSegaPCM[chan[i].pcm.sample]+chan[i].pcm.pos;
rWrite(0x86+(i<<3),3+((actualPos>>16)<<3));
rWrite(0x84+(i<<3),(actualPos)&0xff);
rWrite(0x85+(i<<3),(actualPos>>8)&0xff);
rWrite(6+(i<<3),sampleEndSegaPCM[chan[i].pcm.sample]);
if (!s->isLoopable()) {
rWrite(0x86+(i<<3),2+((actualPos>>16)<<3));
} else {
int loopPos=(sampleOffSegaPCM[chan[i].pcm.sample]&0xffff)+loopStart;
logV("sampleOff: %x loopPos: %x",actualPos,loopPos);
rWrite(4+(i<<3),loopPos&0xff);
rWrite(5+(i<<3),(loopPos>>8)&0xff);
rWrite(0x86+(i<<3),((actualPos>>16)<<3));
}
DivSample* s=parent->getSample(chan[i].pcm.sample);
int loopStart=s->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT);
int actualLength=(s->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT));
if (actualLength>0xfeff) actualLength=0xfeff;
int actualPos=sampleOffSegaPCM[chan[i].pcm.sample]+chan[i].pcm.pos;
rWrite(0x86+(i<<3),3+((actualPos>>16)<<3));
rWrite(0x84+(i<<3),(actualPos)&0xff);
rWrite(0x85+(i<<3),(actualPos>>8)&0xff);
rWrite(6+(i<<3),sampleEndSegaPCM[chan[i].pcm.sample]);
if (!s->isLoopable()) {
rWrite(0x86+(i<<3),2+((actualPos>>16)<<3));
} else {
DivSample* s=parent->getSample(chan[i].pcm.sample);
int loopStart=s->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT);
int actualLength=(s->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT));
if (actualLength>0xfeff) actualLength=0xfeff;
int actualPos=sampleOffSegaPCM[chan[i].pcm.sample]+chan[i].pcm.pos;
rWrite(0x86+(i<<3),3+((actualPos>>16)<<3));
rWrite(0x84+(i<<3),(actualPos)&0xff);
rWrite(0x85+(i<<3),(actualPos>>8)&0xff);
rWrite(6+(i<<3),sampleEndSegaPCM[chan[i].pcm.sample]);
if (!s->isLoopable()) {
rWrite(0x86+(i<<3),2+((actualPos>>16)<<3));
} else {
int loopPos=(sampleOffSegaPCM[chan[i].pcm.sample]&0xffff)+loopStart;
rWrite(4+(i<<3),loopPos&0xff);
rWrite(5+(i<<3),(loopPos>>8)&0xff);
rWrite(0x86+(i<<3),((actualPos>>16)<<3));
}
rWrite(7+(i<<3),chan[i].pcm.freq);
int loopPos=(sampleOffSegaPCM[chan[i].pcm.sample]&0xffff)+loopStart;
logV("sampleOff: %x loopPos: %x",actualPos,loopPos);
rWrite(4+(i<<3),loopPos&0xff);
rWrite(5+(i<<3),(loopPos>>8)&0xff);
rWrite(0x86+(i<<3),((actualPos>>16)<<3));
}
}
chan[i].keyOn=false;
@ -198,43 +183,39 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA);
if (skipRegisterWrites) break;
if (ins->type==DIV_INS_AMIGA || ins->type==DIV_INS_SEGAPCM) {
chan[c.chan].macroVolMul=(ins->type==DIV_INS_AMIGA)?64:127;
chan[c.chan].isNewSegaPCM=(ins->type==DIV_INS_SEGAPCM);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].pcm.sample=ins->amiga.getSample(c.value);
chan[c.chan].sampleNote=c.value;
c.value=ins->amiga.getFreq(c.value);
chan[c.chan].sampleNoteDelta=c.value-chan[c.chan].sampleNote;
}
if (chan[c.chan].pcm.sample<0 || chan[c.chan].pcm.sample>=parent->song.sampleLen) {
chan[c.chan].pcm.sample=-1;
rWrite(0x86+(c.chan<<3),3);
chan[c.chan].macroInit(NULL);
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].baseFreq=(c.value<<7);
chan[c.chan].freqChanged=true;
}
chan[c.chan].furnacePCM=true;
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
if (parent->song.newSegaPCM) {
chan[c.chan].chVolL=(chan[c.chan].outVol*chan[c.chan].chPanL)/127;
chan[c.chan].chVolR=(chan[c.chan].outVol*chan[c.chan].chPanR)/127;
rWrite(2+(c.chan<<3),chan[c.chan].chVolL);
rWrite(3+(c.chan<<3),chan[c.chan].chVolR);
}
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
} else {
assert(false && "LEGACY SAMPLE MODE!!!");
chan[c.chan].macroVolMul=(ins->type==DIV_INS_AMIGA)?64:127;
chan[c.chan].isNewSegaPCM=(ins->type==DIV_INS_SEGAPCM);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].pcm.sample=ins->amiga.getSample(c.value);
chan[c.chan].sampleNote=c.value;
c.value=ins->amiga.getFreq(c.value);
chan[c.chan].sampleNoteDelta=c.value-chan[c.chan].sampleNote;
}
if (chan[c.chan].pcm.sample<0 || chan[c.chan].pcm.sample>=parent->song.sampleLen) {
chan[c.chan].pcm.sample=-1;
rWrite(0x86+(c.chan<<3),3);
chan[c.chan].macroInit(NULL);
break;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].baseFreq=(c.value<<7);
chan[c.chan].freqChanged=true;
chan[c.chan].pcm.freq=-1;
}
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
if (parent->song.newSegaPCM) {
chan[c.chan].chVolL=(chan[c.chan].outVol*chan[c.chan].chPanL)/127;
chan[c.chan].chVolR=(chan[c.chan].outVol*chan[c.chan].chPanR)/127;
rWrite(2+(c.chan<<3),chan[c.chan].chVolL);
rWrite(3+(c.chan<<3),chan[c.chan].chVolR);
}
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
break;
}
case DIV_CMD_NOTE_OFF:
@ -297,6 +278,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
case DIV_CMD_PITCH: {
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
chan[c.chan].pcm.freq=-1;
break;
}
case DIV_CMD_NOTE_PORTA: {
@ -319,6 +301,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
}
chan[c.chan].baseFreq=newFreq;
chan[c.chan].freqChanged=true;
chan[c.chan].pcm.freq=-1;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
@ -328,6 +311,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=((c.value+chan[c.chan].sampleNoteDelta)<<7);
chan[c.chan].freqChanged=true;
chan[c.chan].pcm.freq=-1;
break;
}
case DIV_CMD_SAMPLE_POS: