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
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
/* -*- c++ -*- */
/*
* Copyright 2004,2010,2011 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 <trellis_constellation_metrics_cf.h>
#include <gr_io_signature.h>
#include <assert.h>
#include <stdexcept>
#include <iostream>
trellis_constellation_metrics_cf_sptr
trellis_make_constellation_metrics_cf (digital_constellation_sptr constellation, trellis_metric_type_t TYPE)
{
return gnuradio::get_initial_sptr (new trellis_constellation_metrics_cf (constellation, TYPE));
}
trellis_constellation_metrics_cf::trellis_constellation_metrics_cf (digital_constellation_sptr constellation, trellis_metric_type_t TYPE)
: gr_block ("constellation_metrics_cf",
gr_make_io_signature (1, -1, sizeof (gr_complex)),
gr_make_io_signature (1, -1, sizeof (float))),
d_constellation (constellation),
d_TYPE (TYPE),
d_O (constellation->arity()),
d_D (constellation->dimensionality())
{
set_relative_rate (1.0 * d_O / ((double) d_D));
set_output_multiple ((int)d_O);
}
void
trellis_constellation_metrics_cf::forecast (int noutput_items, gr_vector_int &ninput_items_required)
{
assert (noutput_items % d_O == 0);
unsigned int input_required = d_D * noutput_items / d_O;
unsigned int ninputs = ninput_items_required.size();
for (unsigned int i = 0; i < ninputs; i++)
ninput_items_required[i] = input_required;
}
int
trellis_constellation_metrics_cf::general_work (int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
assert (noutput_items % d_O == 0);
assert (input_items.size() == output_items.size());
unsigned int nstreams = input_items.size();
for (unsigned int m=0;m<nstreams;m++) {
const gr_complex *in = (gr_complex *) input_items[m];
float *out = (float *) output_items[m];
for (unsigned int i = 0; i < noutput_items / d_O ; i++){
d_constellation->calc_metric(&(in[i*d_D]), &(out[i*d_O]), d_TYPE);
}
}
consume_each (d_D * noutput_items / d_O);
return noutput_items;
}
|
