/* -*- c++ -*- */

/*

 * Copyright 2005,2010 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 <gr_stream_to_streams.h>

#include <gr_io_signature.h>

#include <string.h>

gr_stream_to_streams_sptr

gr_make_stream_to_streams (size_t item_size, size_t nstreams)

{

  return gnuradio::get_initial_sptr(new gr_stream_to_streams (item_size, nstreams));

}

gr_stream_to_streams::gr_stream_to_streams (size_t item_size, size_t nstreams)

  : gr_sync_decimator ("stream_to_streams",

                       gr_make_io_signature (1, 1, item_size),

                       gr_make_io_signature (nstreams,

                                             nstreams, item_size),

                       nstreams)

{

}

int

gr_stream_to_streams::work (int noutput_items,

                            gr_vector_const_void_star &input_items,

                            gr_vector_void_star &output_items)

{

  size_t item_size = output_signature()->sizeof_stream_item (0);

  const char *in = (const char *) input_items[0];

  char **outv = (char **) &output_items[0];

  int nstreams = output_items.size();

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

    for (int j = 0; j < nstreams; j++){

      memcpy(outv[j], in, item_size);

      outv[j] += item_size;

      in += item_size;

    }

  }

  return noutput_items;

}