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implement some basic SID3 effects

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Wave/PCM chan and pw/cutoff slides coming later ig
This commit is contained in:
LTVA1 2024-08-08 12:11:47 +03:00
parent 2e892b1aec
commit 2a322bff4f
4 changed files with 134 additions and 12 deletions
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83
src/engine/platform/sid3.cpp
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@ -481,6 +481,9 @@ void DivPlatformSID3::tick(bool sysTick)
int DivPlatformSID3::dispatch(DivCommand c) {
if (c.chan>SID3_NUM_CHANNELS - 1) return 0;
bool updEnv = false;
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_SID3);
@ -669,6 +672,81 @@ int DivPlatformSID3::dispatch(DivCommand c) {
case DIV_CMD_GET_VOLMAX:
return SID3_MAX_VOL;
break;
case DIV_CMD_WAVE:
chan[c.chan].wave = c.value & 0xff;
rWrite(SID3_REGISTER_WAVEFORM + c.chan * SID3_REGISTERS_PER_CHANNEL, chan[c.chan].wave);
break;
case DIV_CMD_SID3_SPECIAL_WAVE:
chan[c.chan].special_wave = c.value % SID3_NUM_SPECIAL_WAVES;
rWrite(SID3_REGISTER_SPECIAL_WAVE + c.chan * SID3_REGISTERS_PER_CHANNEL, chan[c.chan].special_wave);
break;
case DIV_CMD_C64_EXTENDED:
chan[c.chan].ring = c.value & 1;
chan[c.chan].sync = c.value & 2;
chan[c.chan].phase = c.value & 4;
updateFlags(c.chan, chan[c.chan].gate);
break;
case DIV_CMD_C64_DUTY_RESET:
if (c.value&15) {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_SID3);
chan[c.chan].duty=ins->c64.duty;
updateDuty(c.chan);
}
chan[c.chan].resetDuty=c.value>>4;
break;
case DIV_CMD_SID3_RING_MOD_SRC:
chan[c.chan].ringSrc = c.value % (SID3_NUM_CHANNELS + 1);
rWrite(SID3_REGISTER_RING_MOD_SRC + c.chan * SID3_REGISTERS_PER_CHANNEL, chan[c.chan].ringSrc);
break;
case DIV_CMD_SID3_HARD_SYNC_SRC:
chan[c.chan].syncSrc = c.value % SID3_NUM_CHANNELS;
rWrite(SID3_REGISTER_SYNC_SRC + c.chan * SID3_REGISTERS_PER_CHANNEL, chan[c.chan].syncSrc);
break;
case DIV_CMD_SID3_PHASE_MOD_SRC:
chan[c.chan].phaseSrc = c.value % SID3_NUM_CHANNELS;
rWrite(SID3_REGISTER_PHASE_MOD_SRC + c.chan * SID3_REGISTERS_PER_CHANNEL, chan[c.chan].phaseSrc);
break;
case DIV_CMD_FM_AR:
chan[c.chan].attack = c.value & 0xff;
updEnv = true;
break;
case DIV_CMD_FM_DR:
chan[c.chan].decay = c.value & 0xff;
updEnv = true;
break;
case DIV_CMD_FM_SL:
chan[c.chan].sustain = c.value & 0xff;
updEnv = true;
break;
case DIV_CMD_FM_D2R:
chan[c.chan].sr = c.value & 0xff;
updEnv = true;
break;
case DIV_CMD_FM_RR:
chan[c.chan].release = c.value & 0xff;
updEnv = true;
break;
case DIV_CMD_SID3_WAVE_MIX:
chan[c.chan].mix_mode = c.value % 5;
rWrite(SID3_REGISTER_MIXMODE + c.chan * SID3_REGISTERS_PER_CHANNEL, chan[c.chan].mix_mode);
break;
case DIV_CMD_SID3_LFSR_FEEDBACK_BITS:
chan[c.chan].noiseLFSRMask &= ~(0xffU << (8 * c.value2));
chan[c.chan].noiseLFSRMask |= ((c.value & (c.value2 == 3 ? 0x3f : 0xff)) << (8 * c.value2));
updateNoiseLFSRMask(c.chan);
break;
case DIV_CMD_SID3_1_BIT_NOISE:
chan[c.chan].oneBitNoise = c.value & 1;
updateFlags(c.chan, chan[c.chan].gate);
break;
case DIV_CMD_C64_FINE_DUTY:
chan[c.chan].duty = (c.value & 0xfff) << 4;
updateDuty(c.chan);
break;
case DIV_CMD_C64_FINE_CUTOFF:
chan[c.chan].filt[c.value2].cutoff = (c.value & 0xfff) << 4;
updateFilter(c.chan, c.value2);
break;
case DIV_CMD_MACRO_OFF:
chan[c.chan].std.mask(c.value,true);
break;
@ -681,6 +759,11 @@ int DivPlatformSID3::dispatch(DivCommand c) {
default:
break;
}
if(updEnv)
{
updateEnvelope(c.chan);
}
return 1;
}