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OPL: some fixes

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This commit is contained in:
tildearrow 2022-03-15 15:28:45 -05:00
parent 219c5a0522
commit 4c5c4a647b
1 changed files with 12 additions and 3 deletions
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15
src/engine/platform/opl.cpp
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@ -481,6 +481,10 @@ void DivPlatformOPL::muteChannel(int ch, bool mute) {
int DivPlatformOPL::dispatch(DivCommand c) {
// TODO: drums mode!
if (c.chan>=melodicChans) return 0;
// ineffective in 4-op mode
if (oplType==3 && c.chan<14 && (c.chan&1) && c.cmd!=DIV_CMD_GET_VOLMAX && c.cmd!=DIV_ALWAYS_SET_VOLUME) {
if (chan[c.chan-1].fourOp) return 0;
}
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
@ -589,6 +593,9 @@ int DivPlatformOPL::dispatch(DivCommand c) {
break;
}
case DIV_CMD_GET_VOLUME: {
if (pretendYMU) {
return pow(((double)chan[c.chan].vol/63.0),2.0)*127.0;
}
return chan[c.chan].vol;
break;
}
@ -599,6 +606,7 @@ int DivPlatformOPL::dispatch(DivCommand c) {
chan[c.chan].ins=c.value;
break;
case DIV_CMD_PANNING: {
if (oplType!=3) break;
if (c.value==0) {
chan[c.chan].pan=3;
} else {
@ -616,7 +624,6 @@ int DivPlatformOPL::dispatch(DivCommand c) {
rWrite(chanMap[c.chan+1]+ADDR_LR_FB_ALG,((chan[c.chan].state.alg>>1)&1)|(chan[c.chan].state.fb<<1)|((chan[c.chan].pan&3)<<4));
}
}
//rWrite(chanOffs[c.chan]+ADDR_LRAF,(isMuted[c.chan]?0:(chan[c.chan].pan<<6))|(chan[c.chan].state.fms&7)|((chan[c.chan].state.ams&3)<<4));
break;
}
case DIV_CMD_PITCH: {
@ -739,6 +746,8 @@ int DivPlatformOPL::dispatch(DivCommand c) {
void DivPlatformOPL::forceIns() {
for (int i=0; i<melodicChans; i++) {
int ops=(slots[3][i]!=255 && chan[i].state.ops==4 && oplType==3)?4:2;
chan[i].insChanged=true;
chan[i].freqChanged=true;
chan[i].fourOp=(ops==4);
for (int j=0; j<ops; j++) {
unsigned char slot=slots[j][i];
@ -839,11 +848,11 @@ bool DivPlatformOPL::isStereo() {
}
bool DivPlatformOPL::keyOffAffectsArp(int ch) {
return (ch>5);
return false;
}
bool DivPlatformOPL::keyOffAffectsPorta(int ch) {
return (ch>5);
return false;
}
void DivPlatformOPL::notifyInsChange(int ins) {