fft_vcc_fftw.h

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/* -*- c++ -*- */
/*
 * Copyright 2004,2007,2008,2012 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_FFT_FFT_VCC_FFTW_IMPL_H
#define INCLUDED_FFT_FFT_VCC_FFTW_IMPL_H

#include <fft/fft_vcc.h>
#include <fft/fft.h>

namespace gr {
  namespace fft {
    
    class FFT_API fft_vcc_fftw : public fft_vcc
    {
    private:
      fft_complex          *d_fft;
      unsigned int          d_fft_size;
      std::vector<float>    d_window;
      bool                  d_forward;
      bool                  d_shift;

    public:
      fft_vcc_fftw(int fft_size, bool forward,
                   const std::vector<float> &window,
                   bool shift, int nthreads=1);
      
      ~fft_vcc_fftw();
      
      void set_nthreads(int n);
      int nthreads() const;
      bool set_window(const std::vector<float> &window);
  
      int work(int noutput_items,
               gr_vector_const_void_star &input_items,
               gr_vector_void_star &output_items);
    };

  } /* namespace fft */
} /* namespace gr */

#endif /* INCLUDED_FFT_FFT_VCC_FFTW_IMPL_H */