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SNES: implement more effects

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This commit is contained in:
tildearrow 2022-09-28 18:28:01 -05:00
parent 3329e98c51
commit 6f1a41de1e
3 changed files with 115 additions and 36 deletions
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122
src/engine/platform/snes.cpp
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@ -296,29 +296,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
}
if (chan[c.chan].insChanged) {
chan[c.chan].state=ins->snes;
if (chan[c.chan].state.useEnv) {
chWrite(c.chan,5,chan[c.chan].state.a|(chan[c.chan].state.d<<4)|0x80);
chWrite(c.chan,6,chan[c.chan].state.r|(chan[c.chan].state.s<<5));
} else {
chWrite(c.chan,5,0);
switch (chan[c.chan].state.gainMode) {
case DivInstrumentSNES::GAIN_MODE_DIRECT:
chWrite(c.chan,7,chan[c.chan].state.gain&127);
break;
case DivInstrumentSNES::GAIN_MODE_DEC_LINEAR:
chWrite(c.chan,7,0x80|(chan[c.chan].state.gain&31));
break;
case DivInstrumentSNES::GAIN_MODE_INC_LINEAR:
chWrite(c.chan,7,0xc0|(chan[c.chan].state.gain&31));
break;
case DivInstrumentSNES::GAIN_MODE_DEC_LOG:
chWrite(c.chan,7,0xa0|(chan[c.chan].state.gain&31));
break;
case DivInstrumentSNES::GAIN_MODE_INC_INVLOG:
chWrite(c.chan,7,0xe0|(chan[c.chan].state.gain&31));
break;
}
}
writeEnv(c.chan);
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=round(NOTE_FREQUENCY(c.value));
@ -368,6 +346,11 @@ int DivPlatformSNES::dispatch(DivCommand c) {
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_WAVE:
if (!chan[c.chan].useWave) break;
chan[c.chan].wave=c.value;
chan[c.chan].ws.changeWave1(chan[c.chan].wave);
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=round(NOTE_FREQUENCY(c.value2));
bool return2=false;
@ -404,9 +387,76 @@ int DivPlatformSNES::dispatch(DivCommand c) {
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_SAMPLE_POS:
// may have to remove this
chan[c.chan].audPos=c.value;
chan[c.chan].setPos=true;
break;
case DIV_CMD_STD_NOISE_MODE:
chan[c.chan].noise=c.value;
writeNoise=true;
break;
case DIV_CMD_SNES_PITCH_MOD:
chan[c.chan].pitchMod=c.value;
writePitchMod=true;
break;
case DIV_CMD_SNES_INVERT:
chan[c.chan].invertL=(c.value>>4);
chan[c.chan].invertR=c.chan&15;
writeOutVol(c.chan);
break;
case DIV_CMD_SNES_GAIN_MODE:
if (c.value) {
chan[c.chan].state.useEnv=false;
switch (c.value) {
case 1:
chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_DIRECT;
break;
case 2:
chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LINEAR;
break;
case 3:
chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LOG;
break;
case 4:
chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_LINEAR;
break;
case 5:
chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_INVLOG;
break;
}
} else {
chan[c.chan].state.useEnv=true;
}
writeEnv(c.chan);
break;
case DIV_CMD_SNES_GAIN:
if (chan[c.chan].state.gainMode==DivInstrumentSNES::GAIN_MODE_DIRECT) {
chan[c.chan].state.gain=c.value&0x7f;
} else {
chan[c.chan].state.gain=c.value&0x1f;
}
if (!chan[c.chan].state.useEnv) writeEnv(c.chan);
break;
case DIV_CMD_STD_NOISE_FREQ:
noiseFreq=c.value&0x1f;
writeControl=true;
break;
case DIV_CMD_FM_AR:
chan[c.chan].state.a=c.value&15;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
break;
case DIV_CMD_FM_DR:
chan[c.chan].state.d=c.value&7;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
break;
case DIV_CMD_FM_SL:
chan[c.chan].state.s=c.value&7;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
break;
case DIV_CMD_FM_RR:
chan[c.chan].state.r=c.value&0x1f;
if (chan[c.chan].state.useEnv) writeEnv(c.chan);
break;
case DIV_CMD_SNES_ECHO:
chan[c.chan].echo=c.value;
writeEcho=true;
@ -484,6 +534,32 @@ void DivPlatformSNES::writeOutVol(int ch) {
chWrite(ch,1,outR);
}
void DivPlatformSNES::writeEnv(int ch) {
if (chan[ch].state.useEnv) {
chWrite(ch,5,chan[ch].state.a|(chan[ch].state.d<<4)|0x80);
chWrite(ch,6,chan[ch].state.r|(chan[ch].state.s<<5));
} else {
chWrite(ch,5,0);
switch (chan[ch].state.gainMode) {
case DivInstrumentSNES::GAIN_MODE_DIRECT:
chWrite(ch,7,chan[ch].state.gain&127);
break;
case DivInstrumentSNES::GAIN_MODE_DEC_LINEAR:
chWrite(ch,7,0x80|(chan[ch].state.gain&31));
break;
case DivInstrumentSNES::GAIN_MODE_INC_LINEAR:
chWrite(ch,7,0xc0|(chan[ch].state.gain&31));
break;
case DivInstrumentSNES::GAIN_MODE_DEC_LOG:
chWrite(ch,7,0xa0|(chan[ch].state.gain&31));
break;
case DivInstrumentSNES::GAIN_MODE_INC_INVLOG:
chWrite(ch,7,0xe0|(chan[ch].state.gain&31));
break;
}
}
}
void DivPlatformSNES::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
writeOutVol(ch);