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greatly improved playback resume

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no more song weirding out when changing orders
This commit is contained in:
tildearrow 2021-12-21 01:29:07 -05:00
parent 84f36a8c66
commit 997c460fc1
24 changed files with 243 additions and 120 deletions
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26
src/engine/platform/genesis.cpp
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@ -23,9 +23,9 @@ void DivPlatformGenesis::acquire(short* bufL, short* bufR, size_t start, size_t
DivSample* s=parent->song.sample[dacSample];
if (!isMuted[5]) {
if (s->depth==8) {
writes.emplace(0x2a,(unsigned char)s->rendData[dacPos++]+0x80);
immWrite(0x2a,(unsigned char)s->rendData[dacPos++]+0x80);
} else {
writes.emplace(0x2a,((unsigned short)s->rendData[dacPos++]+0x8000)>>8);
immWrite(0x2a,((unsigned short)s->rendData[dacPos++]+0x8000)>>8);
}
}
if (dacPos>=s->rendLength) {
@ -82,14 +82,14 @@ void DivPlatformGenesis::tick() {
for (int i=0; i<6; i++) {
if (i==2 && extMode) continue;
if (chan[i].keyOn || chan[i].keyOff) {
writes.emplace(0x28,0x00|konOffs[i]);
immWrite(0x28,0x00|konOffs[i]);
chan[i].keyOff=false;
}
}
for (int i=0; i<512; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
writes.emplace(i,pendingWrites[i]&0xff);
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
@ -99,12 +99,12 @@ void DivPlatformGenesis::tick() {
if (chan[i].freqChanged) {
chan[i].freq=(chan[i].baseFreq*(ONE_SEMITONE+chan[i].pitch))/ONE_SEMITONE;
int freqt=toFreq(chan[i].freq);
writes.emplace(chanOffs[i]+0xa4,freqt>>8);
writes.emplace(chanOffs[i]+0xa0,freqt&0xff);
immWrite(chanOffs[i]+0xa4,freqt>>8);
immWrite(chanOffs[i]+0xa0,freqt&0xff);
chan[i].freqChanged=false;
}
if (chan[i].keyOn) {
writes.emplace(0x28,0xf0|konOffs[i]);
immWrite(0x28,0xf0|konOffs[i]);
chan[i].keyOn=false;
}
}
@ -171,6 +171,7 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
if (c.chan==5 && dacMode) {
if (skipRegisterWrites) break;
dacSample=12*sampleBank+c.value%12;
if (dacSample>=parent->song.sampleLen) {
dacSample=-1;
@ -370,6 +371,15 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
return 1;
}
void DivPlatformGenesis::forceIns() {
for (int i=0; i<10; i++) {
chan[i].insChanged=true;
}
if (dacMode) {
rWrite(0x2b,0x80);
}
}
void DivPlatformGenesis::reset() {
while (!writes.empty()) writes.pop();
OPN2_Reset(&fm);
@ -394,7 +404,7 @@ void DivPlatformGenesis::reset() {
extMode=false;
// LFO
writes.emplace(0x22,0x08);
immWrite(0x22,0x08);
delay=0;