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/* -*- 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_streams_to_stream.h>
#include <gr_io_signature.h>
#include <string.h>
gr_streams_to_stream_sptr
gr_make_streams_to_stream (size_t item_size, size_t nstreams)
{
return gnuradio::get_initial_sptr(new gr_streams_to_stream (item_size, nstreams));
}
gr_streams_to_stream::gr_streams_to_stream (size_t item_size, size_t nstreams)
: gr_sync_interpolator ("streams_to_stream",
gr_make_io_signature (nstreams, nstreams, item_size),
gr_make_io_signature (1, 1, item_size),
nstreams)
{
}
int
gr_streams_to_stream::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 **inv = (const char **) &input_items[0];
char *out = (char *) output_items[0];
int nstreams = input_items.size();
assert (noutput_items % nstreams == 0);
int ni = noutput_items / nstreams;
for (int i = 0; i < ni; i++){
for (int j = 0; j < nstreams; j++){
memcpy(out, inv[j], item_size);
out += item_size;
inv[j] += item_size;
}
}
return noutput_items;
}
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