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total extinction of legacy sample mode, part 6

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almost there
This commit is contained in:
tildearrow 2025-11-09 15:04:16 -05:00
parent 0f5455831a
commit 0ac7106e0e
2 changed files with 127 additions and 18 deletions
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141
src/engine/legacySample.cpp
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@ -20,6 +20,7 @@
// from this point onwards, a mess.
#include "engine.h"
#include <fmt/printf.h>
bool DivEngine::convertLegacySampleMode() {
logD("converting legacy sample mode...");
@ -33,18 +34,25 @@ bool DivEngine::convertLegacySampleMode() {
auto initSampleInsIfNeeded=[this,&legacyInsInit]() {
if (legacyInsInit==-1) {
DivInstrument* ins=new DivInstrument;
legacyInsInit=(int)song.ins.size();
for (size_t bank=0; bank<(11+song.sample.size())/12; bank++) {
DivInstrument* ins=new DivInstrument;
ins->type=DIV_INS_AMIGA;
ins->amiga.useNoteMap=true;
ins->name="Legacy Samples";
for (int i=0; i<120; i++) {
ins->amiga.noteMap[i].freq=48; // C-4
ins->amiga.noteMap[i].map=i%12;
ins->type=DIV_INS_AMIGA;
ins->amiga.useNoteMap=true;
if (bank==0) {
ins->name="Legacy Samples";
} else {
ins->name=fmt::sprintf("Legacy Samples (bank %d)",(int)bank);
}
for (int i=0; i<120; i++) {
ins->amiga.noteMap[i].freq=48; // C-4
ins->amiga.noteMap[i].map=12*bank+(i%12);
}
song.ins.push_back(ins);
if (song.ins.size()>=256) break;
}
song.ins.push_back(ins);
song.insLen=song.ins.size();
checkAssetDir(song.insDir,song.ins.size());
}
@ -60,30 +68,48 @@ bool DivEngine::convertLegacySampleMode() {
DivInstrumentType preferredInsType=DIV_INS_AMIGA;
DivInstrumentType preferredInsType2=DIV_INS_AMIGA;
bool noteOffDisablesSampleMode=false;
bool hasLegacyToggle=false;
switch (sysOfChan[i]) {
case DIV_SYSTEM_NES:
case DIV_SYSTEM_5E01:
// NES PCM channel (on by default)
if (dispatchChanOfChan[i]!=4) {
continue;
}
sampleMode=1;
break;
case DIV_SYSTEM_MMC5:
// MMC5 PCM channel
if (dispatchChanOfChan[i]!=2) {
continue;
}
sampleMode=1;
break;
case DIV_SYSTEM_YM2612:
// YM2612 DAC channel
if (dispatchChanOfChan[i]!=5) {
continue;
}
hasLegacyToggle=true;
break;
case DIV_SYSTEM_YM2612_EXT:
case DIV_SYSTEM_YM2612_CSM:
// YM2612 DAC channel
if (dispatchChanOfChan[i]!=8) {
continue;
}
hasLegacyToggle=true;
break;
case DIV_SYSTEM_PCE:
case DIV_SYSTEM_X1_010:
// any channel can be DAC'd
noteOffDisablesSampleMode=true;
hasLegacyToggle=true;
break;
case DIV_SYSTEM_AY8910:
case DIV_SYSTEM_AY8930:
// any channel can be DAC'd
break;
case DIV_SYSTEM_YM2610:
case DIV_SYSTEM_YM2610_FULL:
@ -105,6 +131,15 @@ bool DivEngine::convertLegacySampleMode() {
preferredInsType=DIV_INS_ADPCMA;
preferredInsType2=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_YM2610_CSM:
// Neo Geo CD ADPCM channels
if (dispatchChanOfChan[i]<11) {
continue;
}
sampleMode=1;
preferredInsType=DIV_INS_ADPCMA;
preferredInsType2=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_YM2610B:
// ADPCM channels
if (dispatchChanOfChan[i]<9) {
@ -123,12 +158,82 @@ bool DivEngine::convertLegacySampleMode() {
preferredInsType=DIV_INS_ADPCMA;
preferredInsType2=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_YM2610B_CSM:
// ADPCM channels
if (dispatchChanOfChan[i]<13) {
continue;
}
sampleMode=1;
preferredInsType=DIV_INS_ADPCMA;
preferredInsType2=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_YM2608:
// ADPCM channel
if (dispatchChanOfChan[i]!=15) {
continue;
}
sampleMode=1;
preferredInsType=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_YM2608_EXT:
// ADPCM channel
if (dispatchChanOfChan[i]!=18) {
continue;
}
sampleMode=1;
preferredInsType=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_YM2608_CSM:
// ADPCM channel
if (dispatchChanOfChan[i]!=19) {
continue;
}
sampleMode=1;
preferredInsType=DIV_INS_ADPCMB;
break;
case DIV_SYSTEM_SEGAPCM:
case DIV_SYSTEM_SEGAPCM_COMPAT:
// all channels can play back samples
sampleMode=1;
preferredInsType=DIV_INS_SEGAPCM;
break;
case DIV_SYSTEM_MSM6258:
sampleMode=1;
preferredInsType=DIV_INS_MSM6258;
break;
case DIV_SYSTEM_MSM6295:
sampleMode=1;
preferredInsType=DIV_INS_MSM6295;
break;
case DIV_SYSTEM_Y8950:
// Y8950 ADPCM
if (dispatchChanOfChan[i]!=9) {
continue;
}
sampleMode=1;
break;
case DIV_SYSTEM_Y8950_DRUMS:
// Y8950 ADPCM
if (dispatchChanOfChan[i]!=11) {
continue;
}
sampleMode=1;
break;
case DIV_SYSTEM_SWAN:
// PCM channel
if (dispatchChanOfChan[i]!=1) {
continue;
}
noteOffDisablesSampleMode=true;
hasLegacyToggle=true;
break;
case DIV_SYSTEM_VRC6:
// pulse DAC mode
if (dispatchChanOfChan[i]>=2) {
continue;
}
hasLegacyToggle=true;
break;
default: // not a chip with convertible channels
continue;
}
@ -152,14 +257,16 @@ bool DivEngine::convertLegacySampleMode() {
if (fxVal<0) fxVal=0;
switch (p->newData[k][DIV_PAT_FX(l)]) {
case 0x17: // set legacy sample mode
if (fxVal==0) {
sampleMode=0;
} else {
sampleMode=1;
if (hasLegacyToggle) {
if (fxVal==0) {
sampleMode=0;
} else {
sampleMode=1;
}
// clear effect
p->newData[k][DIV_PAT_FX(l)]=-1;
p->newData[k][DIV_PAT_FXVAL(l)]=-1;
}
// clear effect
p->newData[k][DIV_PAT_FX(l)]=-1;
p->newData[k][DIV_PAT_FXVAL(l)]=-1;
break;
case 0xeb: // set sample bank
sampleBank=fxVal;
@ -187,7 +294,7 @@ bool DivEngine::convertLegacySampleMode() {
if (sampleMode==1) {
initSampleInsIfNeeded();
//p->newData[k][DIV_PAT_NOTE]=60+12*sampleBank+(p->newData[k][DIV_PAT_NOTE]%12);
p->newData[k][DIV_PAT_INS]=legacyInsInit;
p->newData[k][DIV_PAT_INS]=MIN(0xff,legacyInsInit+sampleBank);
}
} else if (p->newData[k][DIV_PAT_NOTE]==DIV_NOTE_OFF && noteOffDisablesSampleMode) {
sampleMode=0;