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MultiPCM: add renderInstruments()

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call it on instrument addition/removal/modification,
reset and/or renderSamples
This commit is contained in:
tildearrow 2025-09-14 05:25:44 -05:00
parent 684bebf202
commit c1b7a06a37
2 changed files with 78 additions and 65 deletions
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141
src/engine/platform/multipcm.cpp
View file

@ -468,6 +468,8 @@ void DivPlatformMultiPCM::reset() {
pcm.reset();
renderInstruments();
for (int i=0; i<28; i++) {
chan[i]=DivPlatformMultiPCM::Channel();
chan[i].std.setEngine(parent);
@ -506,6 +508,7 @@ bool DivPlatformMultiPCM::getLegacyAlwaysSetVolume() {
}
void DivPlatformMultiPCM::notifyInsChange(int ins) {
renderInstruments();
for (int i=0; i<28; i++) {
if (chan[i].ins==ins) {
chan[i].insChanged=true;
@ -514,10 +517,11 @@ void DivPlatformMultiPCM::notifyInsChange(int ins) {
}
void DivPlatformMultiPCM::notifyInsAddition(int sysID) {
renderSamples(sysID);
renderInstruments();
}
void DivPlatformMultiPCM::notifyInsDeletion(void* ins) {
renderInstruments();
for (int i=0; i<28; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
@ -577,6 +581,75 @@ const DivMemoryComposition* DivPlatformMultiPCM::getMemCompo(int index) {
return &memCompo;
}
// this is called on instrument change, reset and/or renderSamples().
// I am not making this part of DivDispatch as this is the only chip with
// instruments in ROM.
void DivPlatformMultiPCM::renderInstruments() {
// instrument table
int insCount=parent->song.insLen;
for (int i=0; i<insCount; i++) {
DivInstrument* ins=parent->song.ins[i];
unsigned int insAddr=(i*12);
short sample=ins->amiga.initSample;
if (sample>=0 && sample<parent->song.sampleLen) {
DivSample* s=parent->song.sample[sample];
unsigned char bitDepth;
int startPos=sampleOff[sample];
int endPos=CLAMP(s->isLoopable()?s->loopEnd:(s->samples+1),1,0x10000);
int loop=s->isLoopable()?CLAMP(s->loopStart,0,endPos-2):(endPos-2);
switch (s->depth) {
case DIV_SAMPLE_DEPTH_8BIT:
bitDepth=0;
break;
case DIV_SAMPLE_DEPTH_12BIT:
bitDepth=3;
if (!s->isLoopable()) {
endPos++;
loop++;
}
break;
default:
bitDepth=0;
break;
}
pcmMem[insAddr]=(bitDepth<<6)|((startPos>>16)&0x1f);
pcmMem[1+insAddr]=(startPos>>8)&0xff;
pcmMem[2+insAddr]=(startPos)&0xff;
pcmMem[3+insAddr]=(loop>>8)&0xff;
pcmMem[4+insAddr]=(loop)&0xff;
pcmMem[5+insAddr]=((~(endPos-1))>>8)&0xff;
pcmMem[6+insAddr]=(~(endPos-1))&0xff;
if (ins->type==DIV_INS_MULTIPCM) {
pcmMem[7+insAddr]=(ins->multipcm.lfo<<3)|ins->multipcm.vib; // LFO, VIB
pcmMem[8+insAddr]=(ins->multipcm.ar<<4)|ins->multipcm.d1r; // AR, D1R
pcmMem[9+insAddr]=(ins->multipcm.dl<<4)|ins->multipcm.d2r; // DL, D2R
pcmMem[10+insAddr]=(ins->multipcm.rc<<4)|ins->multipcm.rr; // RC, RR
pcmMem[11+insAddr]=ins->multipcm.am; // AM
} else {
pcmMem[7+insAddr]=0; // LFO, VIB
pcmMem[8+insAddr]=(0xf<<4)|(0xf<<0); // AR, D1R
pcmMem[9+insAddr]=0; // DL, D2R
pcmMem[10+insAddr]=(0xf<<4)|(0xf<<0); // RC, RR
pcmMem[11+insAddr]=0; // AM
}
} else {
// fill to dummy instrument
pcmMem[insAddr]=0;
pcmMem[1+insAddr]=0;
pcmMem[2+insAddr]=0;
pcmMem[3+insAddr]=0;
pcmMem[4+insAddr]=0;
pcmMem[5+insAddr]=0xff;
pcmMem[6+insAddr]=0xff;
pcmMem[7+insAddr]=0; // LFO, VIB
pcmMem[8+insAddr]=(0xf<<4)|(0xf<<0); // AR, D1R
pcmMem[9+insAddr]=(0xf<<4)|(0xf<<0); // DL, D2R
pcmMem[10+insAddr]=(0xf<<4)|(0xf<<0); // RC, RR
pcmMem[11+insAddr]=0; // AM
}
}
}
void DivPlatformMultiPCM::renderSamples(int sysID) {
memset(pcmMem,0,2097152);
memset(sampleOff,0,32768*sizeof(unsigned int));
@ -585,6 +658,8 @@ void DivPlatformMultiPCM::renderSamples(int sysID) {
memCompo=DivMemoryComposition();
memCompo.name="Sample Memory";
renderInstruments();
size_t memPos=0x1800;
int sampleCount=parent->song.sampleLen;
if (sampleCount>512) {
@ -636,70 +711,6 @@ void DivPlatformMultiPCM::renderSamples(int sysID) {
}
sampleLoaded[i]=true;
pcmMemLen=memPos+256;
// instrument table
int insCount=parent->song.insLen;
for (int i=0; i<insCount; i++) {
DivInstrument* ins=parent->song.ins[i];
unsigned int insAddr=(i*12);
short sample=ins->amiga.initSample;
if (sample>=0 && sample<parent->song.sampleLen) {
DivSample* s=parent->song.sample[sample];
unsigned char bitDepth;
int startPos=sampleOff[sample];
int endPos=CLAMP(s->isLoopable()?s->loopEnd:(s->samples+1),1,0x10000);
int loop=s->isLoopable()?CLAMP(s->loopStart,0,endPos-2):(endPos-2);
switch (s->depth) {
case DIV_SAMPLE_DEPTH_8BIT:
bitDepth=0;
break;
case DIV_SAMPLE_DEPTH_12BIT:
bitDepth=3;
if (!s->isLoopable()) {
endPos++;
loop++;
}
break;
default:
bitDepth=0;
break;
}
pcmMem[insAddr]=(bitDepth<<6)|((startPos>>16)&0x1f);
pcmMem[1+insAddr]=(startPos>>8)&0xff;
pcmMem[2+insAddr]=(startPos)&0xff;
pcmMem[3+insAddr]=(loop>>8)&0xff;
pcmMem[4+insAddr]=(loop)&0xff;
pcmMem[5+insAddr]=((~(endPos-1))>>8)&0xff;
pcmMem[6+insAddr]=(~(endPos-1))&0xff;
if (ins->type==DIV_INS_MULTIPCM) {
pcmMem[7+insAddr]=(ins->multipcm.lfo<<3)|ins->multipcm.vib; // LFO, VIB
pcmMem[8+insAddr]=(ins->multipcm.ar<<4)|ins->multipcm.d1r; // AR, D1R
pcmMem[9+insAddr]=(ins->multipcm.dl<<4)|ins->multipcm.d2r; // DL, D2R
pcmMem[10+insAddr]=(ins->multipcm.rc<<4)|ins->multipcm.rr; // RC, RR
pcmMem[11+insAddr]=ins->multipcm.am; // AM
} else {
pcmMem[7+insAddr]=0; // LFO, VIB
pcmMem[8+insAddr]=(0xf<<4)|(0xf<<0); // AR, D1R
pcmMem[9+insAddr]=0; // DL, D2R
pcmMem[10+insAddr]=(0xf<<4)|(0xf<<0); // RC, RR
pcmMem[11+insAddr]=0; // AM
}
} else {
// fill to dummy instrument
pcmMem[insAddr]=0;
pcmMem[1+insAddr]=0;
pcmMem[2+insAddr]=0;
pcmMem[3+insAddr]=0;
pcmMem[4+insAddr]=0;
pcmMem[5+insAddr]=0xff;
pcmMem[6+insAddr]=0xff;
pcmMem[7+insAddr]=0; // LFO, VIB
pcmMem[8+insAddr]=(0xf<<4)|(0xf<<0); // AR, D1R
pcmMem[9+insAddr]=(0xf<<4)|(0xf<<0); // DL, D2R
pcmMem[10+insAddr]=(0xf<<4)|(0xf<<0); // RC, RR
pcmMem[11+insAddr]=0; // AM
}
}
memCompo.used=pcmMemLen;
}
memCompo.capacity=getSampleMemCapacity(0);

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

@ -96,6 +96,8 @@ class DivPlatformMultiPCM: public DivDispatch {
friend void putDispatchChip(void*,int);
friend void putDispatchChan(void*,int,int);
void renderInstruments();
public:
void acquire(short** buf, size_t len);
int dispatch(DivCommand c);