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dev223 - Y8950: fix ADPCM pitch

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issue #2028
This commit is contained in:
tildearrow 2024-09-26 14:41:14 -05:00
parent 0cf6c7cd64
commit 0f2fd76a90
5 changed files with 23 additions and 5 deletions
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4
src/engine/engine.h
View file

@ -54,8 +54,8 @@ class DivWorkPool;
#define DIV_UNSTABLE
#define DIV_VERSION "dev222"
#define DIV_ENGINE_VERSION 222
#define DIV_VERSION "dev223"
#define DIV_ENGINE_VERSION 223
// for imports
#define DIV_VERSION_MOD 0xff01
#define DIV_VERSION_FC 0xff02

9
src/engine/fileOps/fur.cpp
View file

@ -2111,6 +2111,15 @@ bool DivEngine::loadFur(unsigned char* file, size_t len, int variantID) {
}
}
// Y8950 broken ADPCM pitch
if (ds.version<223) {
for (int i=0; i<ds.systemLen; i++) {
if (ds.system[i]==DIV_SYSTEM_Y8950 || ds.system[i]==DIV_SYSTEM_Y8950_DRUMS) {
ds.systemFlags[i].set("compatYPitch",true);
}
}
}
if (active) quitDispatch();
BUSY_BEGIN_SOFT;

5
src/engine/platform/opl.cpp
View file

@ -985,7 +985,7 @@ double DivPlatformOPL::NOTE_ADPCMB(int note) {
if (adpcmChan<0) return 0;
if (chan[adpcmChan].sample>=0 && chan[adpcmChan].sample<parent->song.sampleLen) {
double off=65535.0*(double)(parent->getSample(chan[adpcmChan].sample)->centerRate)/8363.0;
return parent->calcBaseFreq((double)chipClock/144,off,note,false);
return parent->calcBaseFreq((double)chipClock/(compatYPitch?144:72),off,note,false);
}
return 0;
}
@ -1315,7 +1315,7 @@ void DivPlatformOPL::tick(bool sysTick) {
if (chan[adpcmChan].freqChanged || chan[adpcmChan].keyOn || chan[adpcmChan].keyOff) {
if (chan[adpcmChan].sample>=0 && chan[adpcmChan].sample<parent->song.sampleLen) {
double off=65535.0*(double)(parent->getSample(chan[adpcmChan].sample)->centerRate)/8363.0;
chan[adpcmChan].freq=parent->calcFreq(chan[adpcmChan].baseFreq,chan[adpcmChan].pitch,chan[adpcmChan].fixedArp?chan[adpcmChan].baseNoteOverride:chan[adpcmChan].arpOff,chan[adpcmChan].fixedArp,false,4,chan[adpcmChan].pitch2,(double)chipClock/144,off);
chan[adpcmChan].freq=parent->calcFreq(chan[adpcmChan].baseFreq,chan[adpcmChan].pitch,chan[adpcmChan].fixedArp?chan[adpcmChan].baseNoteOverride:chan[adpcmChan].arpOff,chan[adpcmChan].fixedArp,false,4,chan[adpcmChan].pitch2,(double)chipClock/(compatYPitch?144:72),off);
} else {
chan[adpcmChan].freq=0;
}
@ -3152,6 +3152,7 @@ void DivPlatformOPL::setFlags(const DivConfig& flags) {
break;
}
compatPan=flags.getBool("compatPan",false);
compatYPitch=flags.getBool("compatYPitch",false);
for (int i=0; i<44; i++) {
oscBuf[i]->rate=rate;

2
src/engine/platform/opl.h
View file

@ -151,7 +151,7 @@ class DivPlatformOPL: public DivDispatch {
// 2: YM3812-LLE/YMF262-LLE
unsigned char emuCore;
bool update4OpMask, pretendYMU, downsample, compatPan;
bool update4OpMask, pretendYMU, downsample, compatPan, compatYPitch;
short oldWrites[768];
short pendingWrites[768];

8
src/gui/sysConf.cpp
View file

@ -1757,6 +1757,7 @@ bool FurnaceGUI::drawSysConf(int chan, int sysPos, DivSystem type, DivConfig& fl
case DIV_SYSTEM_Y8950:
case DIV_SYSTEM_Y8950_DRUMS: {
int clockSel=flags.getInt("clockSel",0);
bool compatYPitch=flags.getBool("compatYPitch",false);
ImGui::Text(_("Clock rate:"));
ImGui::Indent();
@ -1786,9 +1787,16 @@ bool FurnaceGUI::drawSysConf(int chan, int sysPos, DivSystem type, DivConfig& fl
}
ImGui::Unindent();
if ((type==DIV_SYSTEM_Y8950 || type==DIV_SYSTEM_Y8950_DRUMS) && compatYPitch) {
if (ImGui::Checkbox(_("ADPCM channel one octave up (compatibility)"),&compatYPitch)) {
altered=true;
}
}
if (altered) {
e->lockSave([&]() {
flags.set("clockSel",clockSel);
flags.set("compatYPitch",compatYPitch);
});
}
break;