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/* -*- c++ -*- */
/*
* Copyright 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 <gr_multiply_ff.h>
#include <gr_io_signature.h>
#include <volk/volk.h>
gr_multiply_ff_sptr
gr_make_multiply_ff (size_t vlen)
{
return gnuradio::get_initial_sptr(new gr_multiply_ff (vlen));
}
gr_multiply_ff::gr_multiply_ff (size_t vlen)
: gr_sync_block ("gr_multiply_ff",
gr_make_io_signature (1, -1, sizeof (float)*vlen),
gr_make_io_signature (1, 1, sizeof (float)*vlen)),
d_vlen(vlen)
{
const int alignment_multiple =
volk_get_alignment() / sizeof(float);
set_alignment(std::max(1,alignment_multiple));
}
int
gr_multiply_ff::work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
float *out = (float *) output_items[0];
int noi = d_vlen*noutput_items;
memcpy(out, input_items[0], noi*sizeof(float));
if(is_unaligned()) {
for(size_t i = 1; i < input_items.size(); i++)
volk_32f_x2_multiply_32f_u(out, out, (const float*)input_items[i], noi);
}
else {
for(size_t i = 1; i < input_items.size(); i++)
volk_32f_x2_multiply_32f_a(out, out, (const float*)input_items[i], noi);
}
return noutput_items;
}
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