gr_pll_freqdet_cf.h

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/* -*- c++ -*- */
/*
 * Copyright 2004 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 2, 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef INCLUDED_GR_PLL_FREQDET_CF_H
#define INCLUDED_GR_PLL_FREQDET_CF_H

#include <gr_sync_block.h>

class gr_pll_freqdet_cf;
typedef boost::shared_ptr<gr_pll_freqdet_cf> gr_pll_freqdet_cf_sptr;

gr_pll_freqdet_cf_sptr gr_make_pll_freqdet_cf (float alpha, float beta,
                                               float max_freq, float min_freq);
class gr_pll_freqdet_cf : public gr_sync_block
{
  friend gr_pll_freqdet_cf_sptr gr_make_pll_freqdet_cf (float alpha, float beta,
                                                        float max_freq, float min_freq);

  float d_alpha,d_beta,d_max_freq,d_min_freq,d_phase,d_freq;
  gr_pll_freqdet_cf (float alpha, float beta, float max_freq, float min_freq);

  int work (int noutput_items,
            gr_vector_const_void_star &input_items,
            gr_vector_void_star &output_items);
private:
  float mod_2pi (float in);
  float phase_detector(gr_complex sample,float ref_phase);
};

#endif

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