#ifndef SPECTRUM_H
#define SPECTRUM_H
#include "oneway.h"
#include "gpio.h"
#include "fifo.h"
#include "fft.h"

/**
 */
class Spectrum : public OneWay<uint16_t> {
  static constexpr unsigned FFTSIZE = 1 << FFTORDER;
  GpioClass               & led;
  FIFO<uint32_t, FIFOLEN> & ring;
  const unsigned            bhigh, bmiddle, blow;
  uint8_t                   cred,  cgreen, cblue;
  const IFFT                ifft;
  complex                   buffer [FFTSIZE];
  public:
    explicit Spectrum (FIFO<uint32_t, FIFOLEN> & ff, GpioClass & io) noexcept : OneWay<uint16_t>(),  led(io), ring(ff),
    bhigh (FFTSIZE >> 1), bmiddle(bhigh >> 1), blow (bmiddle >> 4), cred(0u), cgreen(0u), cblue(0u), ifft() {}
    unsigned int Send(uint16_t * const ptr, const unsigned int len) override;
};

#endif // SPECTRUM_H