44 lines
No EOL
1.2 KiB
C++
44 lines
No EOL
1.2 KiB
C++
#include "Oscillator.hpp"
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#include <cmath>
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Oscillator::Oscillator(float initFreq)
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: freq_(initFreq), gain_(100.0f), waveShape_(kWaveShapeSine),
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sampleRate_(48000.f), phase_(0.0f), inc_(0.0f) {
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recalc_();
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};
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void Oscillator::process(float *out, uint32_t frames) {
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for (uint32_t i = 0; i < frames; ++i) {
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switch (waveShape_) {
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default:
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case kWaveShapeSine:
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out[i] = std::sinf(phase_ * 2.0f * M_PI) * gain_;
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break;
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}
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phase_ += inc_;
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if (phase_ >= 1.0f)
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phase_ -= 1.0f;
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}
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}
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void Oscillator::recalc_() { inc_ = freq_ / sampleRate_; }
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void Oscillator::setFrequency(float newFreq) {
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freq_ = std::fmax(newFreq, 0.0f);
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}
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float Oscillator::getFrequency() const { return freq_; };
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void Oscillator::setGain(float newGain) {
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gain_ = newGain > 0 ? newGain : 1.0f;
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}
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float Oscillator::getGain() const { return gain_; };
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void Oscillator::setSampleRate(float newSampleRate) {
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sampleRate_ = newSampleRate > 0 ? newSampleRate : 48000.0f;
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recalc_();
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}
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float Oscillator::getSampleRate() const { return sampleRate_; }
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void Oscillator::setWaveShape(WaveShape shape) { waveShape_ = shape; }
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Oscillator::WaveShape Oscillator::getWaveShape() const { return waveShape_; } |