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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 "float_array_to_int.h"
#include "float_to_int_impl.h"
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
float_to_int::sptr float_to_int::make(size_t vlen, float scale)
{
return gnuradio::make_block_sptr<float_to_int_impl>(vlen, scale);
}
float_to_int_impl::float_to_int_impl(size_t vlen, float scale)
: sync_block("float_to_int",
io_signature::make(1, 1, sizeof(float) * vlen),
io_signature::make(1, 1, sizeof(int) * vlen)),
d_vlen(vlen),
d_scale(scale)
{
const int alignment_multiple = volk_get_alignment() / sizeof(int);
set_alignment(std::max(1, alignment_multiple));
}
int float_to_int_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
// Disable the Volk for now. There is a problem for large 32-bit ints that
// are not properly represented by the precisions of a single float, which
// can cause wrapping from large, positive numbers to negative.
// In gri_float_to_int, the value is first promoted to a 64-bit
// value, clipped, then converted to a float.
#if 0
const float *in = (const float *) input_items[0];
int32_t *out = (int32_t *) output_items[0];
volk_32f_s32f_convert_32i(out, in, d_scale, d_vlen*noutput_items);
#else
const float* in = (const float*)input_items[0];
int* out = (int*)output_items[0];
float_array_to_int(in, out, d_scale, d_vlen * noutput_items);
#endif
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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