85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
#include "Synth.h"
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#include "ADSR.h"
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#include "KeyBoard.h"
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#include "Logger.h"
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#include "OscillatorType.h"
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#include "Settings.h"
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#include "LowPassFilter.h"
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Synth::Synth(/* args */) {
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add_oscillator();
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add_oscillator();
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AddEffect(new ADSR());
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AddEffect(new LowPassFilter());
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for (size_t i = 0; i < STREAM_BUFFER_SIZE; i++) {
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float sample = 0.0f;
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m_out_signal.push_back(sample);
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}
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zero_signal();
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}
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Synth::~Synth() {
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m_oscillators.clear();
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m_effects.clear();
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m_out_signal.clear();
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}
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void Synth::zero_signal() {
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float sample = 0.0f;
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for (size_t i = 0; i < STREAM_BUFFER_SIZE; i++) {
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m_out_signal[i] = sample;
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}
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}
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void Synth::get_note() {
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zero_signal();
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Adder::SumOscillators(m_oscillators, m_out_signal);
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}
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void Synth::apply_effects() {
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for (Effect* effect : m_effects) {
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effect->Process(m_out_signal);
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}
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}
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void Synth::trigger_note_on_effects() {
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for (Effect* effect : m_effects) {
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effect->Trigger();
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}
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}
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void Synth::untrigger_note_on_effects() {
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for (Effect* effect : m_effects) {
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effect->Release();
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}
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}
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void Synth::add_oscillator() {
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m_oscillators.push_back(
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new Oscillator(OscillatorType::Sine, 440.f, VOLUME));
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}
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void Synth::Trigger(Note input) {
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int semitone_shift = KeyBoard::GetSemitoneShift(input.name);
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float hz = KeyBoard::GetHzBySemitone(semitone_shift);
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for (Oscillator* osc : m_oscillators) {
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osc->SetFreq(hz);
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}
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is_note_triggered = true;
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trigger_note_on_effects();
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}
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void Synth::Process() {
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get_note();
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apply_effects();
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}
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void Synth::Release() {
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zero_signal();
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is_note_triggered = false;
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untrigger_note_on_effects();
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}
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void Synth::AddEffect(Effect* fx) { m_effects.push_back(fx); }
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