/* -*- c++ -*- */

/*

 * Copyright 2004,2010 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.

 */

// WARNING: this file is machine generated.  Edits will be over written

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <gr_pll_refout_cc.h>

#include <gr_io_signature.h>

#include <gr_sincos.h>

#include <math.h>

#include <gr_math.h>

#define M_TWOPI (2*M_PI)

gr_pll_refout_cc_sptr

gr_make_pll_refout_cc (float alpha, float beta, float max_freq, float min_freq)

{

  return gnuradio::get_initial_sptr(new gr_pll_refout_cc (alpha, beta, max_freq, min_freq));

}

gr_pll_refout_cc::gr_pll_refout_cc (float alpha, float beta, float max_freq, float min_freq)

  : gr_sync_block ("pll_refout_cc",

                   gr_make_io_signature (1, 1, sizeof (gr_complex)),

                   gr_make_io_signature (1, 1, sizeof (gr_complex))),

    d_alpha(alpha), d_beta(beta), 

    d_max_freq(max_freq), d_min_freq(min_freq),

    d_phase(0), d_freq((max_freq+min_freq)/2)

{

}

float

gr_pll_refout_cc::mod_2pi (float in)

{

  if(in>M_PI)

    return in-M_TWOPI;

  else if(in<-M_PI)

    return in+M_TWOPI;

  else

    return in;

}

float

gr_pll_refout_cc::phase_detector(gr_complex sample,float ref_phase)

{

  float sample_phase;

  sample_phase = gr_fast_atan2f(sample.imag(),sample.real());

  return mod_2pi(sample_phase-ref_phase);

}

int

gr_pll_refout_cc::work (int noutput_items,

                   gr_vector_const_void_star &input_items,

                   gr_vector_void_star &output_items)

{

  const gr_complex *iptr = (gr_complex *) input_items[0];

  gr_complex *optr = (gr_complex *) output_items[0];

  float error;

  float t_imag, t_real;

  int        size = noutput_items;

  while (size-- > 0) {

    error = phase_detector(*iptr++,d_phase);

    d_freq = d_freq + d_beta * error;

    d_phase = mod_2pi(d_phase + d_freq + d_alpha * error);

    if (d_freq > d_max_freq)

      d_freq = d_max_freq;

    else if (d_freq < d_min_freq)

      d_freq = d_min_freq;

    gr_sincosf(d_phase,&t_imag,&t_real);

    *optr++ = gr_complex(t_real,t_imag);

  }

  return noutput_items;

}