/* -*- c++ -*- */
/*
 * Copyright 2007,2010,2013 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.
 */

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

#include "regenerate_bb_impl.h"
#include <gnuradio/io_signature.h>

namespace gr {
namespace blocks {

regenerate_bb::sptr regenerate_bb::make(int period, unsigned int max_regen)
{
    return gnuradio::get_initial_sptr(new regenerate_bb_impl(period, max_regen));
}

regenerate_bb_impl::regenerate_bb_impl(int period, unsigned int max_regen)
    : sync_block("regenerate_bb",
                 io_signature::make(1, 1, sizeof(char)),
                 io_signature::make(1, 1, sizeof(char))),
      d_period(period),
      d_countdown(0),
      d_max_regen(max_regen),
      d_regen_count(max_regen)
{
}

regenerate_bb_impl::~regenerate_bb_impl() {}

void regenerate_bb_impl::set_max_regen(unsigned int regen)
{
    d_max_regen = regen;
    d_countdown = 0;
    d_regen_count = d_max_regen;
}

void regenerate_bb_impl::set_period(int period)
{
    d_period = period;
    d_countdown = 0;
    d_regen_count = d_max_regen;
}

int regenerate_bb_impl::work(int noutput_items,
                             gr_vector_const_void_star& input_items,
                             gr_vector_void_star& output_items)
{
    const char* iptr = (const char*)input_items[0];
    char* optr = (char*)output_items[0];

    for (int i = 0; i < noutput_items; i++) {
        optr[i] = 0;

        if (d_regen_count < d_max_regen) {
            d_countdown--;

            if (d_countdown == 0) {
                optr[i] = 1;
                d_countdown = d_period;
                d_regen_count++;
            }
        }

        if (iptr[i] == 1) {
            d_countdown = d_period;
            optr[i] = 1;
            d_regen_count = 0;
        }
    }
    return noutput_items;
}

} /* namespace blocks */
} /* namespace gr */
