/* -*- 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 <digital_cpmmod_bc.h>
#include <gr_io_signature.h>


// Shared pointer constructor
digital_cpmmod_bc_sptr
digital_make_cpmmod_bc(int type, float h,
		       unsigned samples_per_sym,
		       unsigned L, double beta)
{
  return gnuradio::get_initial_sptr(new digital_cpmmod_bc((gr_cpm::cpm_type)type,
							  h, samples_per_sym,
							  L, beta));
}


digital_cpmmod_bc::digital_cpmmod_bc(gr_cpm::cpm_type type, float h,
				     unsigned samples_per_sym,
				     unsigned L, double beta)
  : gr_hier_block2("digital_cpmmod_bc",
		   gr_make_io_signature(1, 1, sizeof(char)),
		   gr_make_io_signature2(1, 1, 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_PI * h))
{
  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);
}