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Wires the high-hat through, possibly incorrectly.

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This commit is contained in:
Thomas Harte 2020-04-29 22:44:15 -04:00
parent 5896288edd
commit 7fffafdfd4
3 changed files with 23 additions and 10 deletions
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4
Components/OPL2/Implementation/Channel.cpp
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@ -60,6 +60,10 @@ int Channel::cymbal_output(Operator &modulator, Operator &carrier, Channel &chan
return carrier.cymbal_output(states_[0], channel8.states_[1]).level();
}
int Channel::high_hat_output(Operator &modulator, Operator &carrier, Channel &channel8, OperatorOverrides *modulator_overrides) {
return carrier.high_hat_output(states_[0], channel8.states_[1]).level();
}
bool Channel::is_audible(Operator *carrier, OperatorOverrides *carrier_overrides) {
return carrier->is_audible(states_[0], carrier_overrides);
}

28
Components/OPL2/OPL2.cpp
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@ -152,6 +152,12 @@ void OPLL::write_register(uint8_t address, uint8_t value) {
// Select an instrument in the top nibble, set a channel volume in the lower.
channels_[index].overrides.attenuation = value & 0xf;
channels_[index].modulator = &operators_[(value >> 4) * 2];
// Also crib volume levels for rhythm mode, possibly.
if(index >= 6) {
rhythm_overrides_[(index - 6) * 2 + 0].attenuation = value >> 4;
rhythm_overrides_[(index - 6) * 2 + 1].attenuation = value & 0xf;
}
break;
case 0x10: channels_[index].set_frequency_low(value); break;
@ -163,7 +169,7 @@ void OPLL::write_register(uint8_t address, uint8_t value) {
channels_[index].overrides.use_sustain_level = value & 0x20;
break;
default: break;
default: printf("Unknown write to %02x?!?\n", address); break;
}
});
}
@ -216,24 +222,26 @@ void OPLL::update_all_chanels() {
if(depth_rhythm_control_ & 0x20) {
// TODO: pervasively, volume. And LFSR updates.
// Update channel 6 as if melodic, but with the bass instrument.
channels_[6].update(oscillator_, &operators_[32], depth_rhythm_control_ & 0x10);
channels_[7].update(true, oscillator_, operators_[34], bool(depth_rhythm_control_ & 0x01));
channels_[7].update(false, oscillator_, operators_[35], bool(depth_rhythm_control_ & 0x08));
channels_[8].update(true, oscillator_, operators_[36], bool(depth_rhythm_control_ & 0x04));
channels_[8].update(false, oscillator_, operators_[37], bool(depth_rhythm_control_ & 0x02));
// Update channel 6 as if melodic, but with the bass instrument.
output_levels_[2] = output_levels_[15] = VOLUME(channels_[6].melodic_output());
// Use the modulator from channel 7 for the tom tom.
channels_[7].update(true, oscillator_, operators_[34], bool(depth_rhythm_control_ & 0x04));
output_levels_[1] = output_levels_[14] = VOLUME(channels_[7].tom_tom_output(operators_[34]));
// Use the carrier from channel 7 for the snare.
channels_[7].update(false, oscillator_, operators_[35], bool(depth_rhythm_control_ & 0x08));
output_levels_[6] = output_levels_[16] = VOLUME(channels_[7].snare_output(operators_[35]));
// Use the modulator from channel 8 for the tom tom.
output_levels_[1] = output_levels_[14] = VOLUME(channels_[8].tom_tom_output(operators_[37]));
// Use the channel 7 modulator and the channel 8 carrier for a cymbal.
channels_[8].update(false, oscillator_, operators_[36], bool(depth_rhythm_control_ & 0x01));
output_levels_[7] = output_levels_[17] = VOLUME(channels_[7].cymbal_output(operators_[36], operators_[35], channels_[8]));
// TODO: high hat.
output_levels_[0] = output_levels_[13] = 0;
// Use the channel 7 modulator and the channel 8 modulator (?) for a high-hat.
output_levels_[0] = output_levels_[13] = VOLUME(channels_[7].high_hat_output(operators_[36], operators_[35], channels_[8]));
} else {
// Not in rhythm mode; channels 7, 8 and 9 are melodic.
for(int c = 6; c < 9; ++ c) {

1
Components/OPL2/OPL2.hpp
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@ -126,6 +126,7 @@ struct OPLL: public OPLBase<OPLL> {
void update_all_chanels();
Channel channels_[9];
int output_levels_[18];
OperatorOverrides rhythm_overrides_[6];
void setup_fixed_instrument(int number, const uint8_t *data);
uint8_t custom_instrument_[8];