/* -*- 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_VFC_FFTW_IMPL_H
#define INCLUDED_FFT_FFT_VFC_FFTW_IMPL_H

#include <gnuradio/fft/fft.h>
#include <gnuradio/fft/fft_vfc.h>

namespace gr {
namespace fft {

class FFT_API fft_vfc_fftw : public fft_vfc
{
private:
    fft_complex* d_fft;
    unsigned int d_fft_size;
    std::vector<float> d_window;
    bool d_forward;

public:
    fft_vfc_fftw(int fft_size,
                 bool forward,
                 const std::vector<float>& window,
                 int nthreads = 1);

    ~fft_vfc_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_VFC_FFTW_IMPL_H */
