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MSM6295: a bit more polishing

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tildearrow 2022-05-23 02:56:43 -05:00
parent f25cd17590
commit 59a722d04a
2 changed files with 26 additions and 34 deletions
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56
src/engine/platform/msm6295.cpp
View file

@ -24,7 +24,6 @@
#include <math.h>
#define rWrite(v) if (!skipRegisterWrites) {writes.emplace(0,v); if (dumpWrites) {addWrite(0,v);} }
#define CHIP_DIVIDER 32
const char** DivPlatformMSM6295::getRegisterSheet() {
return NULL;
@ -58,15 +57,7 @@ void DivPlatformMSM6295::acquire(short* bufL, short* bufR, size_t start, size_t
}
void DivPlatformMSM6295::tick(bool sysTick) {
for (int i=0; i<4; i++) {
if (chan[i].furnacePCM) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=(chan[i].vol*MIN(8,chan[i].std.vol.val))/8;
}
}
}
// nothing
}
int DivPlatformMSM6295::dispatch(DivCommand c) {
@ -125,6 +116,7 @@ int DivPlatformMSM6295::dispatch(DivCommand c) {
chan[c.chan].keyOff=true;
chan[c.chan].keyOn=false;
chan[c.chan].active=false;
rWrite((8<<c.chan)); // turn off
chan[c.chan].std.release();
break;
case DIV_CMD_ENV_RELEASE:
@ -188,6 +180,7 @@ void DivPlatformMSM6295::muteChannel(int ch, bool mute) {
}
void DivPlatformMSM6295::forceIns() {
while (!writes.empty()) writes.pop();
for (int i=0; i<4; i++) {
chan[i].insChanged=true;
}
@ -253,7 +246,7 @@ void DivPlatformMSM6295::notifyInsDeletion(void* ins) {
}
const void* DivPlatformMSM6295::getSampleMem(int index) {
return index == 0 ? adpcmBMem : NULL;
return index == 0 ? adpcmMem : NULL;
}
size_t DivPlatformMSM6295::getSampleMemCapacity(int index) {
@ -261,53 +254,52 @@ size_t DivPlatformMSM6295::getSampleMemCapacity(int index) {
}
size_t DivPlatformMSM6295::getSampleMemUsage(int index) {
return index == 0 ? adpcmBMemLen : 0;
return index == 0 ? adpcmMemLen : 0;
}
void DivPlatformMSM6295::renderSamples() {
memset(adpcmBMem,0,getSampleMemCapacity(0));
memset(adpcmMem,0,getSampleMemCapacity(0));
// sample data
size_t memPos=128*8;
for (int i=0; i<parent->song.sampleLen; i++) {
int sampleCount=parent->song.sampleLen;
if (sampleCount>128) sampleCount=128;
for (int i=0; i<sampleCount; i++) {
DivSample* s=parent->song.sample[i];
int paddedLen=(s->lengthVOX+255)&(~0xff);
if ((memPos&0xf00000)!=((memPos+paddedLen)&0xf00000)) {
memPos=(memPos+0xfffff)&0xf00000;
}
int paddedLen=s->lengthVOX;
if (memPos>=getSampleMemCapacity(0)) {
logW("out of ADPCM memory for sample %d!",i);
break;
}
if (memPos+paddedLen>=getSampleMemCapacity(0)) {
memcpy(adpcmBMem+memPos,s->dataVOX,getSampleMemCapacity(0)-memPos);
memcpy(adpcmMem+memPos,s->dataVOX,getSampleMemCapacity(0)-memPos);
logW("out of ADPCM memory for sample %d!",i);
} else {
memcpy(adpcmBMem+memPos,s->dataVOX,paddedLen);
memcpy(adpcmMem+memPos,s->dataVOX,paddedLen);
}
s->offVOX=memPos;
memPos+=paddedLen;
}
adpcmBMemLen=memPos+256;
adpcmMemLen=memPos+256;
// phrase book
for (int i=0; i<parent->song.sampleLen; i++) {
for (int i=0; i<sampleCount; i++) {
DivSample* s=parent->song.sample[i];
int endPos=s->offVOX+s->lengthVOX;
adpcmBMem[i*8]=(s->offVOX>>16)&0xff;
adpcmBMem[1+i*8]=(s->offVOX>>8)&0xff;
adpcmBMem[2+i*8]=(s->offVOX)&0xff;
adpcmBMem[3+i*8]=(endPos>>16)&0xff;
adpcmBMem[4+i*8]=(endPos>>8)&0xff;
adpcmBMem[5+i*8]=(endPos)&0xff;
adpcmMem[i*8]=(s->offVOX>>16)&0xff;
adpcmMem[1+i*8]=(s->offVOX>>8)&0xff;
adpcmMem[2+i*8]=(s->offVOX)&0xff;
adpcmMem[3+i*8]=(endPos>>16)&0xff;
adpcmMem[4+i*8]=(endPos>>8)&0xff;
adpcmMem[5+i*8]=(endPos)&0xff;
}
}
int DivPlatformMSM6295::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
parent=p;
adpcmBMem=new unsigned char[getSampleMemCapacity(0)];
adpcmBMemLen=0;
iface.adpcmMem=adpcmBMem;
adpcmMem=new unsigned char[getSampleMemCapacity(0)];
adpcmMemLen=0;
iface.adpcmMem=adpcmMem;
iface.sampleBank=0;
dumpWrites=false;
skipRegisterWrites=false;
@ -327,7 +319,7 @@ void DivPlatformMSM6295::quit() {
delete oscBuf[i];
}
delete msm;
delete[] adpcmBMem;
delete[] adpcmMem;
}
DivPlatformMSM6295::~DivPlatformMSM6295() {

4
src/engine/platform/msm6295.h
View file

@ -93,8 +93,8 @@ class DivPlatformMSM6295: public DivDispatch {
unsigned char regPool[512];
unsigned char lastBusy;
unsigned char* adpcmBMem;
size_t adpcmBMemLen;
unsigned char* adpcmMem;
size_t adpcmMemLen;
DivMSM6295Interface iface;
unsigned char sampleBank;