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/* -*- c++ -*- */
/*
* Copyright 2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "interleaved_short_to_complex_impl.h"
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
interleaved_short_to_complex::sptr
interleaved_short_to_complex::make(bool vector_input, bool swap, float scale_factor)
{
return gnuradio::make_block_sptr<interleaved_short_to_complex_impl>(
vector_input, swap, scale_factor);
}
interleaved_short_to_complex_impl::interleaved_short_to_complex_impl(bool vector_input,
bool swap,
float scale_factor)
: sync_decimator("interleaved_short_to_complex",
gr::io_signature::make(1, 1, (vector_input ? 2 : 1) * sizeof(short)),
gr::io_signature::make(1, 1, sizeof(gr_complex)),
vector_input ? 1 : 2),
d_scalar(scale_factor),
d_swap(swap)
{
const int alignment_multiple = volk_get_alignment() / sizeof(gr_complex);
set_alignment(std::max(1, alignment_multiple));
}
void interleaved_short_to_complex_impl::set_swap(bool swap) { d_swap = swap; }
int interleaved_short_to_complex_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const short* in = (const short*)input_items[0];
float* out = (float*)output_items[0];
// This calculates in[] * 1.0 / d_scalar
volk_16i_s32f_convert_32f(out, in, d_scalar, 2 * noutput_items);
if (d_swap) {
float* p = (float*)output_items[0];
for (int i = 0; i < noutput_items; ++i) {
float f = p[2 * i + 1];
p[2 * i + 1] = p[2 * i];
p[2 * i] = f;
}
}
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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