gr_quadrature_demod_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 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_GR_QUADRATURE_DEMOD_CF_H
#define INCLUDED_GR_QUADRATURE_DEMOD_CF_H

#include <gr_core_api.h>
#include <gr_sync_block.h>

class gr_quadrature_demod_cf;
typedef boost::shared_ptr<gr_quadrature_demod_cf> gr_quadrature_demod_cf_sptr;
GR_CORE_API gr_quadrature_demod_cf_sptr gr_make_quadrature_demod_cf (float gain);

/*!
 * \brief quadrature demodulator: complex in, float out
 *
 * This can be used to demod FM, FSK, GMSK, etc.
 * The input is complex baseband.
 */
class GR_CORE_API gr_quadrature_demod_cf : public gr_sync_block
{
  friend GR_CORE_API gr_quadrature_demod_cf_sptr gr_make_quadrature_demod_cf (float gain);
  gr_quadrature_demod_cf (float gain);

  float         d_gain;

 public:
  void set_gain(float gain) { d_gain = gain; }
  float gain() const { return d_gain; }

  int work (int noutput_items,
                 gr_vector_const_void_star &input_items,
                 gr_vector_void_star &output_items);
};

#endif /* INCLUDED_GR_QUADRATURE_DEMOD_CF_H */