oscillatorbank.h

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/*
Copyright (c) 2020 Electrosmith, Corp, Emilie Gillet
 
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
 
#pragma once
#ifndef DSY_OSCILLATORBANK_H
#define DSY_OSCILLATORBANK_H
 
#include <stdint.h>
#ifdef __cplusplus
 
namespace daisysp
{
class OscillatorBank
{
  public:
    OscillatorBank() {}
    ~OscillatorBank() {}
 
    void Init(float sample_rate);
 
    float Process();
 
    void SetFreq(float freq);
 
    void SetAmplitudes(const float* amplitudes);
 
    void SetSingleAmp(float amp, int idx);
 
    void SetGain(float gain);
 
  private:
    // Oscillator state.
    float phase_;
    float next_sample_;
    int   segment_;
    float gain_;
    float registration_[7];
    float unshifted_registration_[7];
 
    float frequency_;
    float saw_8_gain_;
    float saw_4_gain_;
    float saw_2_gain_;
    float saw_1_gain_;
 
    float sample_rate_;
    bool  recalc_, recalc_gain_;
 
    bool cmp(float a, float b) { return fabsf(a - b) > .0000001; }
};
} // namespace daisysp
#endif
#endif