rfft.h

/*
 *  Copyright (C) 2015-2018 Team Kodi
 *  This file is part of Kodi - https://kodi.tv
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 *  See LICENSES/README.md for more information.
 */

#pragma once

#include <vector>

#include <kissfft/kiss_fftr.h>

class RFFT
{
public:
  RFFT(int size, bool windowed=false);

  ~RFFT();

  void calc(const float* input, float* output);
protected:
  static void hann(std::vector<kiss_fft_scalar>& data);

  size_t m_size;       
  bool m_windowed;     
  kiss_fftr_cfg m_cfg; 
};