/* -*- 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@

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <@NAME@.h>
#include <gr_io_signature.h>
#include <assert.h>
#include <iostream>
#include "core_algorithms.h"


static const float INF = 1.0e9;

@SPTR_NAME@
trellis_make_@BASE_NAME@ (
  const fsm &FSM1, int ST10, int ST1K,
  const fsm &FSM2, int ST20, int ST2K,
  const interleaver &INTERLEAVER,
  int blocklength,
  int repetitions,
  trellis_siso_type_t SISO_TYPE
)
{
  return gnuradio::get_initial_sptr (new @NAME@ (
    FSM1, ST10, ST1K,
    FSM2, ST20, ST2K,
    INTERLEAVER,
    blocklength,
    repetitions,
    SISO_TYPE
    ));
}

@NAME@::@NAME@ (
  const fsm &FSM1, int ST10, int ST1K,
  const fsm &FSM2, int ST20, int ST2K,
  const interleaver &INTERLEAVER,
  int blocklength,
  int repetitions,
  trellis_siso_type_t SISO_TYPE
)
  : gr_block ("@BASE_NAME@",
			  gr_make_io_signature (1, 1, sizeof (float)),
			  gr_make_io_signature (1, 1, sizeof (@O_TYPE@))),
  d_FSM1 (FSM1), d_ST10 (ST10), d_ST1K (ST1K),
  d_FSM2 (FSM2), d_ST20 (ST20), d_ST2K (ST2K),
  d_INTERLEAVER (INTERLEAVER),
  d_blocklength (blocklength),
  d_repetitions (repetitions),
  d_SISO_TYPE (SISO_TYPE)
{
    assert(d_FSM1.I() == d_FSM2.I());
    set_relative_rate (1.0 / ((double) d_FSM1.O() * d_FSM2.O()));
    set_output_multiple (d_blocklength);
}


void
@NAME@::forecast (int noutput_items, gr_vector_int &ninput_items_required)
{
  assert (noutput_items % d_blocklength == 0);
  int input_required =  d_FSM1.O() * d_FSM2.O() * noutput_items ;
  ninput_items_required[0] = input_required;
}



//===========================================================

int
@NAME@::general_work (int noutput_items,
                        gr_vector_int &ninput_items,
                        gr_vector_const_void_star &input_items,
                        gr_vector_void_star &output_items)
{
  assert (noutput_items % d_blocklength == 0);
  int nblocks = noutput_items / d_blocklength;

  float (*p2min)(float, float) = NULL;
  if(d_SISO_TYPE == TRELLIS_MIN_SUM)
    p2min = &min;
  else if(d_SISO_TYPE == TRELLIS_SUM_PRODUCT)
    p2min = &min_star;


  const float *in = (const float *) input_items[0];
  @O_TYPE@ *out = (@O_TYPE@ *) output_items[0];
  for (int n=0;n<nblocks;n++) {
    pccc_decoder(
      d_FSM1, d_ST10, d_ST1K,
      d_FSM2, d_ST20, d_ST2K,
      d_INTERLEAVER, d_blocklength, d_repetitions,
      p2min,
      &(in[n*d_blocklength*d_FSM1.O()*d_FSM2.O()]),&(out[n*d_blocklength])
    );
  }

  consume_each (d_FSM1.O() * d_FSM2.O() * noutput_items );
  return noutput_items;
}