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SegaPCM: finally implement new behavior

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tildearrow 2022-06-01 13:58:39 -05:00
parent 8ef7f91c93
commit 42d98f0894
3 changed files with 63 additions and 12 deletions
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1
TODO.md
View file

@ -4,7 +4,6 @@
- CSM
- MSM6258 pitch and clock select
- the last compat flags
- newSegaPCM
- newVolumeScaling
- collapse/expand pattern and song
- Game Boy envelope macro/sequence

49
src/engine/platform/segapcm.cpp
View file

@ -85,10 +85,17 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
for (int i=0; i<16; i++) {
chan[i].std.next();
// TODO: fix
/*if (chan[i].std.vol.had) {
chan[i].outVol=(chan[i].vol*MIN(127,chan[i].std.vol.val))/127;
}*/
if (parent->song.newSegaPCM) {
if (chan[i].std.vol.had) {
chan[i].outVol=(chan[i].vol*MIN(127,chan[i].std.vol.val))/127;
chan[i].chVolL=(chan[i].outVol*chan[i].chPanL)/127;
chan[i].chVolR=(chan[i].outVol*chan[i].chPanR)/127;
if (dumpWrites) {
addWrite(0x10002+(i<<3),chan[i].chVolL);
addWrite(0x10003+(i<<3),chan[i].chVolR);
}
}
}
if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
@ -107,14 +114,24 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
}
if (chan[i].std.panL.had) {
chan[i].chVolL=chan[i].std.panL.val&127;
if (parent->song.newSegaPCM) {
chan[i].chPanL=chan[i].std.panL.val&127;
chan[i].chVolL=(chan[i].outVol*chan[i].chPanL)/127;
} else {
chan[i].chVolL=chan[i].std.panL.val&127;
}
if (dumpWrites) {
addWrite(0x10002+(i<<3),chan[i].chVolL);
}
}
if (chan[i].std.panR.had) {
chan[i].chVolR=chan[i].std.panR.val&127;
if (parent->song.newSegaPCM) {
chan[i].chPanR=chan[i].std.panR.val&127;
chan[i].chVolR=(chan[i].outVol*chan[i].chPanR)/127;
} else {
chan[i].chVolR=chan[i].std.panR.val&127;
}
if (dumpWrites) {
addWrite(0x10003+(i<<3),chan[i].chVolR);
}
@ -261,8 +278,13 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
}
chan[c.chan].chVolL=c.value;
chan[c.chan].chVolR=c.value;
if (parent->song.newSegaPCM) {
chan[c.chan].chVolL=(c.value*chan[c.chan].chPanL)/127;
chan[c.chan].chVolR=(c.value*chan[c.chan].chPanR)/127;
} else {
chan[c.chan].chVolL=c.value;
chan[c.chan].chVolR=c.value;
}
if (dumpWrites) {
addWrite(0x10002+(c.chan<<3),chan[c.chan].chVolL);
addWrite(0x10003+(c.chan<<3),chan[c.chan].chVolR);
@ -280,8 +302,15 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
chan[c.chan].ins=c.value;
break;
case DIV_CMD_PANNING: {
chan[c.chan].chVolL=c.value>>1;
chan[c.chan].chVolR=c.value2>>1;
if (parent->song.newSegaPCM) {
chan[c.chan].chPanL=c.value>>1;
chan[c.chan].chPanR=c.value2>>1;
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;
} else {
chan[c.chan].chVolL=c.value>>1;
chan[c.chan].chVolR=c.value2>>1;
}
if (dumpWrites) {
addWrite(0x10002+(c.chan<<3),chan[c.chan].chVolL);
addWrite(0x10003+(c.chan<<3),chan[c.chan].chVolR);

25
src/engine/platform/segapcm.h
View file

@ -34,6 +34,7 @@ class DivPlatformSegaPCM: public DivDispatch {
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, portaPause, furnacePCM;
int vol, outVol;
unsigned char chVolL, chVolR;
unsigned char chPanL, chPanR;
struct PCMChannel {
int sample;
@ -46,7 +47,29 @@ class DivPlatformSegaPCM: public DivDispatch {
std.init(which);
pitch2=0;
}
Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), pitch2(0), note(0), ins(-1), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), inPorta(false), portaPause(false), furnacePCM(false), vol(0), outVol(0), chVolL(127), chVolR(127) {}
Channel():
freqH(0),
freqL(0),
freq(0),
baseFreq(0),
pitch(0),
pitch2(0),
note(0),
ins(-1),
active(false),
insChanged(true),
freqChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
portaPause(false),
furnacePCM(false),
vol(0),
outVol(0),
chVolL(127),
chVolR(127),
chPanL(127),
chPanR(127) {}
};
Channel chan[16];
DivDispatchOscBuffer* oscBuf[16];