crossfade.h

/*
Copyright (c) 2020 Electrosmith, Corp, Paul Batchelor
 
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_CROSSFADE_H
#define DSY_CROSSFADE_H
#include <stdint.h>
#ifdef __cplusplus
 
namespace daisysp
{
enum
{
    CROSSFADE_LIN,
    CROSSFADE_CPOW,
    CROSSFADE_LOG,
    CROSSFADE_EXP,
    CROSSFADE_LAST,
};
 
class CrossFade
{
  public:
    CrossFade() {}
    ~CrossFade() {}
    inline void Init(int curve)
    {
        pos_   = 0.5f;
        curve_ = curve < CROSSFADE_LAST ? curve : CROSSFADE_LIN;
    }
 
    inline void Init() { Init(CROSSFADE_LIN); }
    float Process(float &in1, float &in2);
 
 
    inline void SetPos(float pos) { pos_ = pos; }
    inline void SetCurve(uint8_t curve) { curve_ = curve; }
    inline float GetPos(float pos) { return pos_; }
    inline uint8_t GetCurve(uint8_t curve) { return curve_; }
 
  private:
    float   pos_;
    uint8_t curve_;
};
} // namespace daisysp
#endif
#endif