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/* -*- c++ -*- */
/*
* Copyright 2011 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 <digital_constellation_decoder_cb.h>
#include <digital_constellation.h>
#include <gr_io_signature.h>
#include <iostream>
digital_constellation_decoder_cb_sptr
digital_make_constellation_decoder_cb (digital_constellation_sptr constellation)
{
return gnuradio::get_initial_sptr
(new digital_constellation_decoder_cb(constellation));
}
digital_constellation_decoder_cb::
digital_constellation_decoder_cb (digital_constellation_sptr constellation)
: gr_block ("constellation_decoder_cb",
gr_make_io_signature (1, 1, sizeof (gr_complex)),
gr_make_io_signature (1, 1, sizeof (unsigned char))),
d_constellation(constellation),
d_dim(constellation->dimensionality())
{
set_relative_rate (1.0 / ((double) d_dim));
}
void
digital_constellation_decoder_cb::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
digital_constellation_decoder_cb::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;
}
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