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further improve channel allocation

This commit is contained in:
tildearrow 2022-04-28 18:32:24 -05:00
parent 2a1d45fa35
commit 2ac0e8af42
1 changed files with 4 additions and 2 deletions
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6
src/engine/engine.cpp
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@ -2158,6 +2158,7 @@ void DivEngine::noteOff(int chan) {
void DivEngine::autoNoteOn(int ch, int ins, int note, int vol) {
bool isViable[DIV_MAX_CHANS];
bool canPlayAnyway=false;
bool notInViableChannel=false;
if (midiBaseChan<0) midiBaseChan=0;
if (midiBaseChan>=chans) midiBaseChan=chans-1;
int finalChan=midiBaseChan;
@ -2171,6 +2172,7 @@ void DivEngine::autoNoteOn(int ch, int ins, int note, int vol) {
// 1. check which channels are viable for this instrument
DivInstrument* insInst=getIns(ins);
if (getPreferInsType(finalChan)!=insInst->type && getPreferInsSecondType(finalChan)!=insInst->type) notInViableChannel=true;
for (int i=0; i<chans; i++) {
if (ins==-1 || ins>=song.insLen || getPreferInsType(i)==insInst->type || getPreferInsSecondType(i)==insInst->type) {
if (insInst->type==DIV_INS_OPL) {
@ -2193,7 +2195,7 @@ void DivEngine::autoNoteOn(int ch, int ins, int note, int vol) {
// 2. find a free channel
do {
if (isViable[finalChan] && chan[finalChan].midiNote==-1 && (insInst->type==DIV_INS_OPL || getChannelType(finalChan)==finalChanType)) {
if (isViable[finalChan] && chan[finalChan].midiNote==-1 && (insInst->type==DIV_INS_OPL || getChannelType(finalChan)==finalChanType || notInViableChannel)) {
chan[finalChan].midiNote=note;
chan[finalChan].midiAge=midiAgeCounter++;
pendingNotes.push(DivNoteEvent(finalChan,ins,note,vol,true));
@ -2207,7 +2209,7 @@ void DivEngine::autoNoteOn(int ch, int ins, int note, int vol) {
// 3. find the oldest channel
int candidate=finalChan;
do {
if (isViable[finalChan] && (insInst->type==DIV_INS_OPL || getChannelType(finalChan)==finalChanType) && chan[finalChan].midiAge<chan[candidate].midiAge) {
if (isViable[finalChan] && (insInst->type==DIV_INS_OPL || getChannelType(finalChan)==finalChanType || notInViableChannel) && chan[finalChan].midiAge<chan[candidate].midiAge) {
candidate=finalChan;
}
if (++finalChan>=chans) {