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Marks up more specific TODOs.

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I think I'm already much happier with this factoring.
This commit is contained in:
Thomas Harte 2020-05-05 00:35:03 -04:00
parent 0505b82384
commit b943441901
1 changed files with 19 additions and 1 deletions
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20
Components/OPL2/OPLL.cpp
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@ -247,7 +247,23 @@ void OPLL::update_all_channels() {
#define VOLUME(x) int16_t(((x) * total_volume_) >> 12)
if(rhythm_mode_enabled_) {
// TODO!
// Advance the rhythm envelope generators.
// TODO: these need to be properly seeded.
for(int c = 0; c < 5; ++c) {
oscillator_.update_lfsr();
rhythm_generators_[c].update(oscillator_);
}
// Fill in the melodic channels.
output_levels_[3] = VOLUME(melodic_output(0));
output_levels_[4] = VOLUME(melodic_output(1));
output_levels_[5] = VOLUME(melodic_output(2));
output_levels_[9] = VOLUME(melodic_output(3));
output_levels_[10] = VOLUME(melodic_output(4));
output_levels_[11] = VOLUME(melodic_output(5));
// TODO: drum noises. Also subject to proper channel population.
} else {
for(int c = 6; c < 9; ++c) {
envelope_generators_[c + 0].update(oscillator_);
@ -277,11 +293,13 @@ void OPLL::update_all_channels() {
#undef VOLUME
// TODO: batch updates of the LFSR.
// TODO: modulator feedback.
}
int OPLL::melodic_output(int channel) {
// TODO: key-rate scaling.
// TODO: proper scales of all attenuations below.
auto modulation = WaveformGenerator<period_precision>::wave(channels_[channel].modulator_waveform, phase_generators_[channel + 9].phase());
modulation += envelope_generators_[channel + 9].attenuation() + channels_[channel].modulator_attenuation;