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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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24
src/engine/platform/arcade.cpp
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@ -31,7 +31,8 @@ static int orderedOps[4]={
0,2,1,3
};
#define rWrite(a,v) pendingWrites[a]=v;
#define rWrite(a,v) if (!skipRegisterWrites) {pendingWrites[a]=v;}
#define immWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v);}
void DivPlatformArcade::acquire_nuked(short* bufL, short* bufR, size_t start, size_t len) {
static int o[2];
@ -167,14 +168,14 @@ int hScale(int note) {
void DivPlatformArcade::tick() {
for (int i=0; i<8; i++) {
if (chan[i].keyOn || chan[i].keyOff) {
writes.emplace(0x08,i);
immWrite(0x08,i);
chan[i].keyOff=false;
}
}
for (int i=0; i<256; i++) {
if (pendingWrites[i]!=oldWrites[i]) {
writes.emplace(i,pendingWrites[i]&0xff);
immWrite(i,pendingWrites[i]&0xff);
oldWrites[i]=pendingWrites[i];
}
}
@ -182,12 +183,12 @@ void DivPlatformArcade::tick() {
for (int i=0; i<8; i++) {
if (chan[i].freqChanged) {
chan[i].freq=chan[i].baseFreq+(chan[i].pitch>>1)-64;
writes.emplace(i+0x28,hScale(chan[i].freq>>6));
writes.emplace(i+0x30,chan[i].freq<<2);
immWrite(i+0x28,hScale(chan[i].freq>>6));
immWrite(i+0x30,chan[i].freq<<2);
chan[i].freqChanged=false;
}
if (chan[i].keyOn) {
writes.emplace(0x08,0x78|i);
immWrite(0x08,0x78|i);
chan[i].keyOn=false;
}
}
@ -209,6 +210,7 @@ int DivPlatformArcade::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
if (c.chan>7) {
if (skipRegisterWrites) break;
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;
@ -425,6 +427,12 @@ int DivPlatformArcade::dispatch(DivCommand c) {
return 1;
}
void DivPlatformArcade::forceIns() {
for (int i=0; i<13; i++) {
chan[i].insChanged=true;
}
}
void DivPlatformArcade::reset() {
while (!writes.empty()) writes.pop();
if (useYMFM) {
@ -451,8 +459,8 @@ void DivPlatformArcade::reset() {
delay=0;
//rWrite(0x18,0x10);
writes.emplace(0x19,0x7f);
writes.emplace(0x19,0xff);
immWrite(0x19,0x7f);
immWrite(0x19,0xff);
//rWrite(0x1b,0x00);
extMode=false;