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
64
65
66
67
|
/* -*- c++ -*- */
/*
* Copyright 2011,2012 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 "constellation_decoder_cb_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace digital {
constellation_decoder_cb::sptr
constellation_decoder_cb::make(constellation_sptr constellation)
{
return gnuradio::get_initial_sptr(new constellation_decoder_cb_impl(constellation));
}
constellation_decoder_cb_impl::constellation_decoder_cb_impl(
constellation_sptr constellation)
: block("constellation_decoder_cb",
io_signature::make(1, 1, sizeof(gr_complex)),
io_signature::make(1, 1, sizeof(unsigned char))),
d_constellation(constellation),
d_dim(constellation->dimensionality())
{
set_relative_rate(1, (uint64_t)d_dim);
}
constellation_decoder_cb_impl::~constellation_decoder_cb_impl() {}
void constellation_decoder_cb_impl::forecast(int noutput_items,
gr_vector_int& ninput_items_required)
{
const unsigned int input_required = noutput_items * d_dim;
const unsigned ninputs = ninput_items_required.size();
for (unsigned int i = 0; i < ninputs; i++)
ninput_items_required[i] = input_required;
}
int constellation_decoder_cb_impl::general_work(int noutput_items,
gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
gr_complex const* in = (const gr_complex*)input_items[0];
unsigned char* out = (unsigned char*)output_items[0];
for (int i = 0; i < noutput_items; i++) {
out[i] = d_constellation->decision_maker(&(in[i * d_dim]));
}
consume_each(noutput_items * d_dim);
return noutput_items;
}
} /* namespace digital */
} /* namespace gr */
|
