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
|
/* -*- c++ -*- */
/*
* Copyright 2015 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 "complex_to_magphase_impl.h"
#include <gnuradio/io_signature.h>
#include <gnuradio/math.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
complex_to_magphase::sptr complex_to_magphase::make(size_t vlen)
{
return gnuradio::get_initial_sptr(new complex_to_magphase_impl(vlen));
}
complex_to_magphase_impl::complex_to_magphase_impl(size_t vlen)
: sync_block("complex_to_magphase",
io_signature::make(1, 1, sizeof(gr_complex) * vlen),
io_signature::make(2, 2, sizeof(float) * vlen)),
d_vlen(vlen)
{
const int alignment_multiple = volk_get_alignment() / sizeof(float);
set_alignment(std::max(1, alignment_multiple));
}
int complex_to_magphase_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const gr_complex* in = (const gr_complex*)input_items[0];
float* out0 = (float*)output_items[0];
float* out1 = (float*)output_items[1];
int noi = noutput_items * d_vlen;
volk_32fc_magnitude_32f_u(out0, in, noi);
// The fast_atan2f is faster than Volk
for (int i = 0; i < noi; i++) {
// out[i] = std::arg (in[i]);
out1[i] = gr::fast_atan2f(in[i]);
}
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
|
