/* -*- c++ -*- */
/*
 * Copyright 2011,2012 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.
 */

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

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

namespace gr {
namespace digital {

constellation_decoder_cb::sptr
constellation_decoder_cb::make(constellation_sptr constellation)
{
    return gnuradio::get_initial_sptr(new constellation_decoder_cb_impl(constellation));
}

constellation_decoder_cb_impl::constellation_decoder_cb_impl(
    constellation_sptr constellation)
    : block("constellation_decoder_cb",
            io_signature::make(1, 1, sizeof(gr_complex)),
            io_signature::make(1, 1, sizeof(unsigned char))),
      d_constellation(constellation),
      d_dim(constellation->dimensionality())
{
    set_relative_rate(1, (uint64_t)d_dim);
}

constellation_decoder_cb_impl::~constellation_decoder_cb_impl() {}

void constellation_decoder_cb_impl::forecast(int noutput_items,
                                             gr_vector_int& ninput_items_required)
{
    unsigned int input_required = noutput_items * d_dim;

    unsigned ninputs = ninput_items_required.size();
    for (unsigned int i = 0; i < ninputs; i++)
        ninput_items_required[i] = input_required;
}

int constellation_decoder_cb_impl::general_work(int noutput_items,
                                                gr_vector_int& ninput_items,
                                                gr_vector_const_void_star& input_items,
                                                gr_vector_void_star& output_items)
{
    gr_complex const* in = (const gr_complex*)input_items[0];
    unsigned char* out = (unsigned char*)output_items[0];

    for (int i = 0; i < noutput_items; i++) {
        out[i] = d_constellation->decision_maker(&(in[i * d_dim]));
    }

    consume_each(noutput_items * d_dim);
    return noutput_items;
}

} /* namespace digital */
} /* namespace gr */
