56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
#include "synth.h"
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#include "synth_waveform.h"
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void FMVoice::LoadPatch(FMPatch *p) {
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bool playing = this->playing;
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float pitch = this->pitch;
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NoteOff();
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for (int i=0; i<NUM_OPERATORS; i++) {
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FMOperator op = p->operators[i];
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this->oscillators[i].frequencyModulation(1);
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this->oscillators[i].begin(op.waveform);
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this->envelopes[i].delay(op.delayTime);
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this->envelopes[i].attack(op.attackTime);
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this->oscillators[i].amplitude(op.holdAmplitude);
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this->envelopes[i].hold(op.holdTime);
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this->envelopes[i].decay(op.decayTime);
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this->envelopes[i].sustain(op.sustainAmplitude / op.holdAmplitude);
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this->envelopes[i].release(op.releaseTime);
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// This feels wasteful 🙁
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for (int j=0; j<NUM_OPERATORS; j++) {
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this->mixers[i].gain(j, p->gains[i][j]);
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}
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this->outputMixer.gain(i, p->gains[i][NUM_OPERATORS]);
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}
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this->patch = p;
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if (playing) {
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NoteOn(pitch);
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}
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}
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void FMVoice::SetPitch(float freq) {
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for (int i=0; i<4; i++) {
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FMOperator op = this->patch->operators[i];
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this->oscillators[i].frequency(op.offset + (freq * op.multiplier));
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}
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this->pitch = freq;
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}
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void FMVoice::NoteOn(float freq) {
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SetPitch(freq);
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for (int i=0; i<4; i++) {
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this->envelopes[i].noteOn();
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}
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this->playing = true;
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}
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void FMVoice::NoteOff() {
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for (int i=0; i<4; i++) {
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this->envelopes[i].noteOff();
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}
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this->playing = false;
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}
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