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
|
/* -*- c++ -*- */
/*
* Copyright 2017 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 "exponentiate_const_cci_impl.h"
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
exponentiate_const_cci::sptr exponentiate_const_cci::make(int exponent, size_t vlen)
{
return gnuradio::make_block_sptr<exponentiate_const_cci_impl>(exponent, vlen);
}
/*
* The private constructor
*/
exponentiate_const_cci_impl::exponentiate_const_cci_impl(int exponent, size_t vlen)
: gr::sync_block("exponentiate_const_cci",
gr::io_signature::make(1, -1, sizeof(gr_complex) * vlen),
gr::io_signature::make(1, -1, sizeof(gr_complex) * vlen)),
d_exponent(exponent),
d_vlen(vlen)
{
const int alignment_multiple = volk_get_alignment() / sizeof(gr_complex);
set_alignment(std::max(1, alignment_multiple));
}
/*
* Our virtual destructor.
*/
exponentiate_const_cci_impl::~exponentiate_const_cci_impl() {}
bool exponentiate_const_cci_impl::check_topology(int ninputs, int noutputs)
{
return ninputs == noutputs;
}
void exponentiate_const_cci_impl::set_exponent(int exponent)
{
gr::thread::scoped_lock guard(d_setlock);
d_exponent = exponent;
}
int exponentiate_const_cci_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
gr::thread::scoped_lock guard(d_setlock);
for (unsigned int i = 0; i < input_items.size(); i++) {
const gr_complex* in = (const gr_complex*)input_items[i];
gr_complex* out = (gr_complex*)output_items[i];
if (d_exponent > 1) {
volk_32fc_x2_multiply_32fc(out, in, in, noutput_items * d_vlen);
for (int j = 2; j < d_exponent; j++) {
volk_32fc_x2_multiply_32fc(out, out, in, noutput_items * d_vlen);
}
} else {
memcpy(out, in, sizeof(gr_complex) * noutput_items * d_vlen);
}
}
// Tell runtime system how many output items we produced.
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
|
