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https://github.com/tildearrow/furnace.git
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SNES: implement more effects
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tildearrow
parent
3329e98c51
commit
6f1a41de1e
3 changed files with 115 additions and 36 deletions
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@ -296,29 +296,7 @@ int DivPlatformSNES::dispatch(DivCommand c) {
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}
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if (chan[c.chan].insChanged) {
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chan[c.chan].state=ins->snes;
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if (chan[c.chan].state.useEnv) {
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chWrite(c.chan,5,chan[c.chan].state.a|(chan[c.chan].state.d<<4)|0x80);
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chWrite(c.chan,6,chan[c.chan].state.r|(chan[c.chan].state.s<<5));
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} else {
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chWrite(c.chan,5,0);
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switch (chan[c.chan].state.gainMode) {
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case DivInstrumentSNES::GAIN_MODE_DIRECT:
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chWrite(c.chan,7,chan[c.chan].state.gain&127);
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break;
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case DivInstrumentSNES::GAIN_MODE_DEC_LINEAR:
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chWrite(c.chan,7,0x80|(chan[c.chan].state.gain&31));
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break;
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case DivInstrumentSNES::GAIN_MODE_INC_LINEAR:
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chWrite(c.chan,7,0xc0|(chan[c.chan].state.gain&31));
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break;
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case DivInstrumentSNES::GAIN_MODE_DEC_LOG:
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chWrite(c.chan,7,0xa0|(chan[c.chan].state.gain&31));
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break;
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case DivInstrumentSNES::GAIN_MODE_INC_INVLOG:
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chWrite(c.chan,7,0xe0|(chan[c.chan].state.gain&31));
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break;
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}
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}
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writeEnv(c.chan);
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}
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=round(NOTE_FREQUENCY(c.value));
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@ -368,6 +346,11 @@ int DivPlatformSNES::dispatch(DivCommand c) {
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chan[c.chan].pitch=c.value;
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_WAVE:
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if (!chan[c.chan].useWave) break;
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chan[c.chan].wave=c.value;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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break;
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case DIV_CMD_NOTE_PORTA: {
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int destFreq=round(NOTE_FREQUENCY(c.value2));
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bool return2=false;
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@ -404,9 +387,76 @@ int DivPlatformSNES::dispatch(DivCommand c) {
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chan[c.chan].inPorta=c.value;
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break;
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case DIV_CMD_SAMPLE_POS:
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// may have to remove this
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chan[c.chan].audPos=c.value;
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chan[c.chan].setPos=true;
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break;
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case DIV_CMD_STD_NOISE_MODE:
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chan[c.chan].noise=c.value;
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writeNoise=true;
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break;
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case DIV_CMD_SNES_PITCH_MOD:
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chan[c.chan].pitchMod=c.value;
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writePitchMod=true;
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break;
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case DIV_CMD_SNES_INVERT:
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chan[c.chan].invertL=(c.value>>4);
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chan[c.chan].invertR=c.chan&15;
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writeOutVol(c.chan);
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break;
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case DIV_CMD_SNES_GAIN_MODE:
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if (c.value) {
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chan[c.chan].state.useEnv=false;
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switch (c.value) {
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case 1:
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chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_DIRECT;
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break;
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case 2:
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chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LINEAR;
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break;
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case 3:
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chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_DEC_LOG;
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break;
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case 4:
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chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_LINEAR;
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break;
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case 5:
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chan[c.chan].state.gainMode=DivInstrumentSNES::GAIN_MODE_INC_INVLOG;
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break;
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}
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} else {
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chan[c.chan].state.useEnv=true;
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}
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writeEnv(c.chan);
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break;
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case DIV_CMD_SNES_GAIN:
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if (chan[c.chan].state.gainMode==DivInstrumentSNES::GAIN_MODE_DIRECT) {
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chan[c.chan].state.gain=c.value&0x7f;
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} else {
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chan[c.chan].state.gain=c.value&0x1f;
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}
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if (!chan[c.chan].state.useEnv) writeEnv(c.chan);
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break;
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case DIV_CMD_STD_NOISE_FREQ:
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noiseFreq=c.value&0x1f;
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writeControl=true;
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break;
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case DIV_CMD_FM_AR:
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chan[c.chan].state.a=c.value&15;
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if (chan[c.chan].state.useEnv) writeEnv(c.chan);
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break;
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case DIV_CMD_FM_DR:
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chan[c.chan].state.d=c.value&7;
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if (chan[c.chan].state.useEnv) writeEnv(c.chan);
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break;
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case DIV_CMD_FM_SL:
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chan[c.chan].state.s=c.value&7;
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if (chan[c.chan].state.useEnv) writeEnv(c.chan);
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break;
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case DIV_CMD_FM_RR:
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chan[c.chan].state.r=c.value&0x1f;
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if (chan[c.chan].state.useEnv) writeEnv(c.chan);
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break;
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case DIV_CMD_SNES_ECHO:
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chan[c.chan].echo=c.value;
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writeEcho=true;
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@ -484,6 +534,32 @@ void DivPlatformSNES::writeOutVol(int ch) {
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chWrite(ch,1,outR);
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}
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void DivPlatformSNES::writeEnv(int ch) {
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if (chan[ch].state.useEnv) {
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chWrite(ch,5,chan[ch].state.a|(chan[ch].state.d<<4)|0x80);
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chWrite(ch,6,chan[ch].state.r|(chan[ch].state.s<<5));
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} else {
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chWrite(ch,5,0);
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switch (chan[ch].state.gainMode) {
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case DivInstrumentSNES::GAIN_MODE_DIRECT:
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chWrite(ch,7,chan[ch].state.gain&127);
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break;
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case DivInstrumentSNES::GAIN_MODE_DEC_LINEAR:
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chWrite(ch,7,0x80|(chan[ch].state.gain&31));
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break;
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case DivInstrumentSNES::GAIN_MODE_INC_LINEAR:
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chWrite(ch,7,0xc0|(chan[ch].state.gain&31));
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break;
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case DivInstrumentSNES::GAIN_MODE_DEC_LOG:
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chWrite(ch,7,0xa0|(chan[ch].state.gain&31));
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break;
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case DivInstrumentSNES::GAIN_MODE_INC_INVLOG:
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chWrite(ch,7,0xe0|(chan[ch].state.gain&31));
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break;
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}
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}
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}
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void DivPlatformSNES::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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writeOutVol(ch);
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@ -131,6 +131,7 @@ class DivPlatformSNES: public DivDispatch {
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private:
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void updateWave(int ch);
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void writeOutVol(int ch);
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void writeEnv(int ch);
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void initEcho();
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};
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@ -867,23 +867,11 @@ void DivEngine::registerSystems() {
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{DIV_INS_SNES, DIV_INS_SNES, DIV_INS_SNES, DIV_INS_SNES, DIV_INS_SNES, DIV_INS_SNES, DIV_INS_SNES, DIV_INS_SNES},
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{},
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{
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{0x10, {DIV_CMD_WAVE, "10xx: Set waveform"}},
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{0x11, {DIV_CMD_STD_NOISE_MODE, "11xx: Toggle noise mode"}},
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{0x12, {DIV_CMD_SNES_ECHO, "12xx: Toggle echo on this channel"}},
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{0x13, {DIV_CMD_SNES_PITCH_MOD, "13xx: Toggle pitch modulation"}},
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{0x14, {DIV_CMD_SNES_INVERT, "14xy: Toggle invert (x: left; y: right)"}},
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{0x15, {DIV_CMD_SNES_GAIN_MODE, "15xx: Set gain mode"}},
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{0x16, {DIV_CMD_SNES_GAIN, "16xx: Set gain"}},
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{0x18, {DIV_CMD_SNES_ECHO_ENABLE, "18xx: Enable echo buffer"}},
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{0x19, {DIV_CMD_SNES_ECHO_DELAY, "19xx: Set echo delay"}},
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{0x19, {DIV_CMD_SNES_ECHO_DELAY, "19xx: Set echo delay (0 to F)"}},
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{0x1a, {DIV_CMD_SNES_ECHO_VOL_LEFT, "1Axx: Set left echo volume"}},
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{0x1b, {DIV_CMD_SNES_ECHO_VOL_RIGHT, "1Bxx: Set right echo volume"}},
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{0x1c, {DIV_CMD_SNES_ECHO_FEEDBACK, "1Cxx: Set echo feedback"}},
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{0x1d, {DIV_CMD_STD_NOISE_FREQ, "1Dxx: Set noise frequency"}},
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{0x20, {DIV_CMD_FM_AR, "20xx: Set attack"}},
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{0x21, {DIV_CMD_FM_DR, "21xx: Set decay"}},
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{0x22, {DIV_CMD_FM_SL, "22xx: Set sustain"}},
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{0x23, {DIV_CMD_FM_RR, "23xx: Set release"}},
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{0x30, {DIV_CMD_SNES_ECHO_FIR, "30xx: Set echo filter coefficient 0",constVal<0>,effectVal}},
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{0x31, {DIV_CMD_SNES_ECHO_FIR, "31xx: Set echo filter coefficient 1",constVal<1>,effectVal}},
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{0x32, {DIV_CMD_SNES_ECHO_FIR, "32xx: Set echo filter coefficient 2",constVal<2>,effectVal}},
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@ -892,6 +880,20 @@ void DivEngine::registerSystems() {
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{0x35, {DIV_CMD_SNES_ECHO_FIR, "35xx: Set echo filter coefficient 5",constVal<5>,effectVal}},
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{0x36, {DIV_CMD_SNES_ECHO_FIR, "36xx: Set echo filter coefficient 6",constVal<6>,effectVal}},
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{0x37, {DIV_CMD_SNES_ECHO_FIR, "37xx: Set echo filter coefficient 7",constVal<7>,effectVal}},
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},
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{
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{0x10, {DIV_CMD_WAVE, "10xx: Set waveform"}},
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{0x11, {DIV_CMD_STD_NOISE_MODE, "11xx: Toggle noise mode"}},
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{0x12, {DIV_CMD_SNES_ECHO, "12xx: Toggle echo on this channel"}},
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{0x13, {DIV_CMD_SNES_PITCH_MOD, "13xx: Toggle pitch modulation"}},
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{0x14, {DIV_CMD_SNES_INVERT, "14xy: Toggle invert (x: left; y: right)"}},
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{0x15, {DIV_CMD_SNES_GAIN_MODE, "15xx: Set envelope mode (0: ADSR, 1: gain/direct, 2: dec, 3: exp, 4: inc, 5: bent)"}},
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{0x16, {DIV_CMD_SNES_GAIN, "16xx: Set gain (00 to 7F if direct; 00 to 1F otherwise)"}},
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{0x1d, {DIV_CMD_STD_NOISE_FREQ, "1Dxx: Set noise frequency (00 to 1F)"}},
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{0x20, {DIV_CMD_FM_AR, "20xx: Set attack (0 to F)"}},
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{0x21, {DIV_CMD_FM_DR, "21xx: Set decay (0 to 7)"}},
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{0x22, {DIV_CMD_FM_SL, "22xx: Set sustain (0 to 7)"}},
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{0x23, {DIV_CMD_FM_RR, "23xx: Set release (00 to 1F)"}},
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}
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);
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