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
|
/* -*- c++ -*- */
/*
* Copyright 2012 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_real_impl.h"
#include <gr_io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
complex_to_real::sptr complex_to_real::make(size_t vlen)
{
return gnuradio::get_initial_sptr(new complex_to_real_impl(vlen));
}
complex_to_real_impl::complex_to_real_impl(size_t vlen)
: gr_sync_block("complex_to_real",
gr_make_io_signature (1, 1, sizeof(gr_complex)*vlen),
gr_make_io_signature (1, 1, 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_real_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 *out = (float *) output_items[0];
int noi = noutput_items * d_vlen;
if(is_unaligned()) {
for (int i = 0; i < noi; i++){
out[i] = in[i].real ();
}
}
else {
volk_32fc_deinterleave_real_32f_a(out, in, noi);
}
return noutput_items;
}
} /* namespace blocks */
}/* namespace gr */
|
