goertzel_fc_impl.h

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/* -*- c++ -*- */
/*
 * Copyright 2006,2011,2012 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_GOERTZEL_FC_IMPL_H
#define INCLUDED_FFT_GOERTZEL_FC_IMPL_H

#include <fft/goertzel_fc.h>
#include <fft/goertzel.h>

namespace gr {
  namespace fft {
    
    class FFT_API goertzel_fc_impl : public goertzel_fc
    {
    private:
      goertzel d_goertzel;
      int      d_len;
      float    d_freq;
      int      d_rate;

    public:
      goertzel_fc_impl(int rate, int len, float freq);
      
      ~goertzel_fc_impl();
      
      void  set_freq(float freq);
      void  set_rate(int rate);

      float freq() { return d_freq; }
      int   rate() { return d_rate; }

      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_GOERTZEL_FC_IMPL_H */