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VGM export: fix up SegaPCM

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turns out it is capable of arbitrary loop position!
This commit is contained in:
tildearrow 2022-01-24 15:23:42 -05:00
parent 9654c6a85d
commit 50a0f1f360
3 changed files with 23 additions and 20 deletions
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26
src/engine/platform/arcade.cpp
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@ -240,7 +240,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
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);
addWrite(0x10086+(pcmChan<<3),3);
}
break;
}
@ -250,17 +250,18 @@ 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];
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);
addWrite(0x10086+(pcmChan<<3),3+((s->rendOffP>>16)<<3));
addWrite(0x10084+(pcmChan<<3),(s->rendOffP)&0xff);
addWrite(0x10085+(pcmChan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10006+(pcmChan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength)>>8));
addWrite(0x10086+(pcmChan<<3),2+((s->rendOffP>>16)<<3));
}
} 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);
addWrite(0x10086+(pcmChan<<3),3);
}
break;
}
@ -269,10 +270,11 @@ int DivPlatformArcade::dispatch(DivCommand c) {
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(0x10086+(pcmChan<<3),3+((s->rendOffP>>16)<<3));
addWrite(0x10084+(pcmChan<<3),(s->rendOffP)&0xff);
addWrite(0x10085+(pcmChan<<3),(s->rendOffP>>8)&0xff);
addWrite(0x10006+(pcmChan<<3),MIN(255,((s->rendOffP&0xffff)+s->rendLength)>>8));
addWrite(0x10086+(pcmChan<<3),2+((s->rendOffP>>16)<<3));
addWrite(0x10007+(pcmChan<<3),chan[c.chan].pcm.freq);
}
}
@ -321,7 +323,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
if (c.chan>7) {
chan[c.chan].pcm.sample=-1;
if (dumpWrites) {
addWrite(0x10086+(pcmChan<<3),1);
addWrite(0x10086+(pcmChan<<3),3);
}
}
chan[c.chan].keyOff=true;
@ -559,7 +561,7 @@ void DivPlatformArcade::reset() {
//rWrite(0x1b,0x00);
if (dumpWrites) {
for (int i=0; i<5; i++) {
addWrite(0x10086+(i<<3),1);
addWrite(0x10086+(i<<3),3);
addWrite(0x10002+(i<<3),0x7f);
addWrite(0x10003+(i<<3),0x7f);
}