/* -*- c++ -*- */
/*
 * Copyright 2004,2010,2012 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 <gnuradio/io_signature.h>
#include <iostream>

namespace gr {
  namespace trellis {

    static const float INF = 1.0e9;

    @BASE_NAME@::sptr
    @BASE_NAME@::make(const fsm &FSM, int K,
		      int S0, int SK)
    {
      return gnuradio::get_initial_sptr
	(new @IMPL_NAME@(FSM, K, S0, SK));
    }

    @IMPL_NAME@::@IMPL_NAME@(const fsm &FSM, int K,
			     int S0, int SK)
    : block("@BASE_NAME@",
	       io_signature::make(1, -1, sizeof(float)),
	       io_signature::make(1, -1, sizeof(@TYPE@))),
      d_FSM(FSM), d_K(K), d_S0(S0), d_SK(SK)//,
      //d_trace(FSM.S()*K)
    {
      set_relative_rate(1.0 / ((double)d_FSM.O()));
      set_output_multiple(d_K);
    }

    void @IMPL_NAME@::set_FSM(const fsm &FSM) 
    { 
      gr::thread::scoped_lock guard(d_setlock); 
      d_FSM = FSM; 
      set_relative_rate(1.0 / ((double)d_FSM.O()));
    }

    void @IMPL_NAME@::set_K(int K) 
    { 
      gr::thread::scoped_lock guard(d_setlock); 
      d_K = K; 
      set_output_multiple(d_K);
    }

    void @IMPL_NAME@::set_S0(int S0) 
    { 
      gr::thread::scoped_lock guard(d_setlock); 
      d_S0 = S0; 
    }

    void @IMPL_NAME@::set_SK(int SK) 
    { 
      gr::thread::scoped_lock guard(d_setlock); 
      d_SK = SK; 
    }

    @IMPL_NAME@::~@IMPL_NAME@()
    {
    }

    void
    @IMPL_NAME@::forecast(int noutput_items,
			  gr_vector_int &ninput_items_required)
    {
      int input_required =  d_FSM.O() * noutput_items;
      unsigned ninputs = ninput_items_required.size();
      for(unsigned int i = 0; i < ninputs; i++) {
	ninput_items_required[i] = input_required;
      }
    }

    int
    @IMPL_NAME@::general_work(int noutput_items,
			      gr_vector_int &ninput_items,
			      gr_vector_const_void_star &input_items,
			      gr_vector_void_star &output_items)
    {
      gr::thread::scoped_lock guard(d_setlock);
      int nstreams = input_items.size();
      int nblocks = noutput_items / d_K;

      for(int m = 0; m < nstreams; m++) {
	const float *in = (const float*)input_items[m];
	@TYPE@ *out = (@TYPE@*)output_items[m];

	for(int n = 0; n < nblocks; n++) {
	  viterbi_algorithm(d_FSM.I(), d_FSM.S(), d_FSM.O(),
			    d_FSM.NS(), d_FSM.OS(), d_FSM.PS(),
			    d_FSM.PI(), d_K,d_S0, d_SK,
			    &(in[n*d_K*d_FSM.O()]), &(out[n*d_K]));
	}
      }

      consume_each(d_FSM.O() * noutput_items);
      return noutput_items;
    }

  } /* namespace trellis */
} /* namespace gr */
