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

/*

 * Copyright 2010 Free Software Foundation, Inc.

 * 

 * 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.

 */

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <gr_cpmmod_bc.h>

#include <gr_io_signature.h>

// Shared pointer constructor

gr_cpmmod_bc_sptr

gr_make_cpmmod_bc(int type, float h, unsigned samples_per_sym, unsigned L, double beta)

{

  return gnuradio::get_initial_sptr(new gr_cpmmod_bc((gr_cpm::cpm_type)type, h, samples_per_sym, L, beta));

}

gr_cpmmod_bc::gr_cpmmod_bc(gr_cpm::cpm_type type, float h, unsigned samples_per_sym,

                                                        unsigned L, double beta)

  : gr_hier_block2("gr_cpmmod_bc",

                   gr_make_io_signature(1, 1, sizeof(char)),

                   gr_make_io_signature2(1, 2, sizeof(gr_complex), sizeof(float))),

        d_taps(gr_cpm::phase_response(type, samples_per_sym, L, beta)),

        d_char_to_float(gr_make_char_to_float()),

        d_pulse_shaper(gr_make_interp_fir_filter_fff(samples_per_sym, d_taps)),

        d_fm(gr_make_frequency_modulator_fc(M_TWOPI * h / samples_per_sym))

{

  switch (type) {

          case gr_cpm::LRC:

          case gr_cpm::LSRC:

          case gr_cpm::LREC:

          case gr_cpm::TFM:

          case gr_cpm::GAUSSIAN:

                  break;

          default:

                  throw std::invalid_argument("invalid CPM type");

  }

  connect(self(), 0, d_char_to_float, 0);

  connect(d_char_to_float, 0, d_pulse_shaper, 0);

  connect(d_pulse_shaper, 0, d_fm, 0);

  connect(d_fm, 0, self(), 0);

}