#ifndef MIXER_HPP_INCLUDED
#define MIXER_HPP_INCLUDED

#include <cstdint>

template <uint32_t NumInputs> class Mixer {
public:
  Mixer(float init_gain);

  void process(const float **inputs, float *out, uint32_t frames);
  void processStereo(const float **inputsL, const float **inputsR, float *outL,
                     float *outR, uint32_t frames);

  void setInputGain(uint32_t index, float gain);
  float getInputGain(uint32_t index) const;

  void setNormalise(bool norm);
  bool getNormalise() const;

private:
  void mixChannels(const float **inputs, float *out, uint32_t frames);
  bool isValidInputIndex(float index) const;
  float gains_[NumInputs];
  bool normalise_;
};

#endif // MIXER_HPP_INCLUDED

template class Mixer<2u>;