1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/* -*- c++ -*- */
/*
* Copyright 2013 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 "constellation_soft_decoder_cf_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace digital {
constellation_soft_decoder_cf::sptr
constellation_soft_decoder_cf::make(constellation_sptr constellation)
{
return gnuradio::get_initial_sptr(
new constellation_soft_decoder_cf_impl(constellation));
}
constellation_soft_decoder_cf_impl::constellation_soft_decoder_cf_impl(
constellation_sptr constellation)
: sync_interpolator("constellation_soft_decoder_cf",
io_signature::make(1, 1, sizeof(gr_complex)),
io_signature::make(1, 1, sizeof(float)),
constellation->bits_per_symbol()),
d_constellation(constellation),
d_dim(constellation->dimensionality()),
d_bps(constellation->bits_per_symbol())
{
}
constellation_soft_decoder_cf_impl::~constellation_soft_decoder_cf_impl() {}
int constellation_soft_decoder_cf_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
gr_complex const* in = (const gr_complex*)input_items[0];
float* out = (float*)output_items[0];
std::vector<float> bits;
// FIXME: figure out how to manage d_dim
for (int i = 0; i < noutput_items / d_bps; i++) {
bits = d_constellation->soft_decision_maker(in[i]);
for (size_t j = 0; j < bits.size(); j++) {
out[d_bps * i + j] = bits[j];
}
}
return noutput_items;
}
} /* namespace digital */
} /* namespace gr */
|
