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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 "float_to_complex_impl.h"
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
float_to_complex::sptr float_to_complex::make(size_t vlen)
{
return gnuradio::get_initial_sptr(new float_to_complex_impl(vlen));
}
float_to_complex_impl::float_to_complex_impl(size_t vlen)
: sync_block("float_to_complex",
io_signature::make(1, 2, sizeof(float) * vlen),
io_signature::make(1, 1, sizeof(gr_complex) * vlen)),
d_vlen(vlen)
{
const int alignment_multiple = volk_get_alignment() / sizeof(float);
set_alignment(std::max(1, alignment_multiple));
}
int float_to_complex_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
float* r = (float*)input_items[0];
gr_complex* out = (gr_complex*)output_items[0];
switch (input_items.size()) {
case 1:
for (size_t j = 0; j < noutput_items * d_vlen; j++)
out[j] = gr_complex(r[j], 0);
break;
case 2: {
// for (size_t j = 0; j < noutput_items*d_vlen; j++)
// out[j] = gr_complex (r[j], i[j]);
float* i = (float*)input_items[1];
volk_32f_x2_interleave_32fc(out, r, i, noutput_items * d_vlen);
break;
}
default:
assert(0);
}
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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