/* -*- c++ -*- */
/*
 * Copyright 2014 <+YOU OR YOUR COMPANY+>.
 *
 * This 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.
 *
 * This software 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 this software; 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 <gnuradio/io_signature.h>
#include "al_enc_impl.h"
#include <stdexcept>
#include <iostream>
#include <string.h>
#include <cstdio>

namespace gr {
  namespace alamouti {

    al_enc::sptr
    al_enc::make(int fft_length)
    {
      return gnuradio::get_initial_sptr
        (new al_enc_impl(fft_length));
    }

    /*
     * The private constructor
     */
    al_enc_impl::al_enc_impl(int fft_length)
      : gr::sync_block("al_enc",
              gr::io_signature::make(1, 1, sizeof(gr_complex)),
              gr::io_signature::make(2, 2, sizeof(gr_complex))),d_fft_length(fft_length)
    {gr::block::set_output_multiple(fft_length);}

    /*
     * Our virtual destructor.
     */
    al_enc_impl::~al_enc_impl()
    {
    }

    int
    al_enc_impl::work(int noutput_items,
			  gr_vector_const_void_star &input_items,
			  gr_vector_void_star &output_items)
    {
        const gr_complex *in = (const gr_complex *) input_items[0];
        gr_complex *out_sym0 = (gr_complex *) output_items[0];
	gr_complex *out_sym1 = (gr_complex *) output_items[1];

	std::cout<<noutput_items<<std::endl;
	 // Do <+signal processing+>
	//SFBC

	int i = 0;

	while ( i < noutput_items ) {


			out_sym0[i] = in[i];
			out_sym0[i+1] = -(conj( in[i+1] ));

			out_sym1[i] = in[i+1];
			out_sym1[i+1] = conj( in[i] );

			i+=2;


	}


        return noutput_items;
    }

  } /* namespace alamouti */
} /* namespace gr */