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dev153 - fix SegaPCM slides

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issue #1060
This commit is contained in:
tildearrow 2023-04-13 17:21:06 -05:00
parent ea172ea6ff
commit eaafc16eb3
5 changed files with 42 additions and 13 deletions
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26
src/engine/platform/segapcm.cpp
View file

@ -72,7 +72,7 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
chan[i].handleArp();
} else if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=(parent->calcArp(chan[i].note,chan[i].std.arp.val)<<6);
chan[i].baseFreq=(parent->calcArp(chan[i].note,chan[i].std.arp.val)<<7);
}
chan[i].freqChanged=true;
}
@ -106,21 +106,22 @@ void DivPlatformSegaPCM::tick(bool sysTick) {
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
chan[i].freq=chan[i].baseFreq+(chan[i].pitch>>1)-64;
chan[i].freq=chan[i].baseFreq+(chan[i].pitch)-128+(oldSlides?0:chan[i].pitch2);
if (!parent->song.oldArpStrategy) {
if (chan[i].fixedArp) {
chan[i].freq=(chan[i].baseNoteOverride<<6)+(chan[i].pitch>>1)-64+chan[i].pitch2;
chan[i].freq=(chan[i].baseNoteOverride<<7)+chan[i].pitch-128+(chan[i].pitch2<<(oldSlides?1:0));
} else {
chan[i].freq+=chan[i].arpOff<<6;
chan[i].freq+=chan[i].arpOff<<7;
}
}
if (oldSlides) chan[i].freq&=~1;
if (chan[i].furnacePCM) {
double off=1.0;
if (chan[i].pcm.sample>=0 && chan[i].pcm.sample<parent->song.sampleLen) {
DivSample* s=parent->getSample(chan[i].pcm.sample);
off=(double)s->centerRate/8363.0;
}
chan[i].pcm.freq=MIN(255,(15625+(off*parent->song.tuning*pow(2.0,double(chan[i].freq+256)/(64.0*12.0)))*255)/31250)+chan[i].pitch2;
chan[i].pcm.freq=MIN(255,(15625+(off*parent->song.tuning*pow(2.0,double(chan[i].freq+512)/(128.0*12.0)))*255)/31250)+(oldSlides?chan[i].pitch2:0);
rWrite(7+(i<<3),chan[i].pcm.freq);
}
chan[i].freqChanged=false;
@ -201,7 +202,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].note=c.value;
chan[c.chan].baseFreq=(c.value<<6);
chan[c.chan].baseFreq=(c.value<<7);
chan[c.chan].freqChanged=true;
}
chan[c.chan].furnacePCM=true;
@ -289,17 +290,18 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
break;
}
case DIV_CMD_NOTE_PORTA: {
int destFreq=(c.value2<<6);
int destFreq=(c.value2<<7);
int newFreq;
int mul=(oldSlides || parent->song.linearPitch!=2)?8:parent->song.pitchSlideSpeed;
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
newFreq=chan[c.chan].baseFreq+c.value*4;
newFreq=chan[c.chan].baseFreq+c.value*mul;
if (newFreq>=destFreq) {
newFreq=destFreq;
return2=true;
}
} else {
newFreq=chan[c.chan].baseFreq-c.value*4;
newFreq=chan[c.chan].baseFreq-c.value*mul;
if (newFreq<=destFreq) {
newFreq=destFreq;
return2=true;
@ -314,7 +316,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
break;
}
case DIV_CMD_LEGATO: {
chan[c.chan].baseFreq=(c.value<<6);
chan[c.chan].baseFreq=(c.value<<7);
chan[c.chan].freqChanged=true;
break;
}
@ -337,7 +339,7 @@ int DivPlatformSegaPCM::dispatch(DivCommand c) {
return 127;
break;
case DIV_CMD_PRE_PORTA:
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=(chan[c.chan].note<<6);
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=(chan[c.chan].note<<7);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_PRE_NOTE:
@ -504,6 +506,8 @@ void DivPlatformSegaPCM::setFlags(const DivConfig& flags) {
for (int i=0; i<16; i++) {
oscBuf[i]->rate=rate;
}
oldSlides=flags.getBool("oldSlides",false);
}
int DivPlatformSegaPCM::getOutputCount() {

1
src/engine/platform/segapcm.h
View file

@ -65,6 +65,7 @@ class DivPlatformSegaPCM: public DivDispatch {
segapcm_device pcm;
int delay;
int pcmL, pcmR, pcmCycles;
bool oldSlides;
unsigned char sampleBank;
unsigned char lastBusy;