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 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 <multiply_cc_impl.h>
#include <gr_io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
multiply_cc::sptr multiply_cc::make(size_t vlen)
{
return gnuradio::get_initial_sptr(new multiply_cc_impl(vlen));
}
multiply_cc_impl::multiply_cc_impl(size_t vlen)
: gr_sync_block("multiply_cc",
gr_make_io_signature (1, -1, sizeof(gr_complex)*vlen),
gr_make_io_signature (1, 1, sizeof(gr_complex)*vlen)),
d_vlen(vlen)
{
const int alignment_multiple =
volk_get_alignment() / sizeof(gr_complex);
set_alignment(std::max(1, alignment_multiple));
}
int
multiply_cc_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr_complex *out = (gr_complex *) output_items[0];
int noi = d_vlen*noutput_items;
memcpy(out, input_items[0], noi*sizeof(gr_complex));
if(is_unaligned()) {
for(size_t i = 1; i < input_items.size(); i++)
volk_32fc_x2_multiply_32fc_u(out, out, (gr_complex*)input_items[i], noi);
}
else {
for(size_t i = 1; i < input_items.size(); i++)
volk_32fc_x2_multiply_32fc_a(out, out, (gr_complex*)input_items[i], noi);
}
return noutput_items;
}
} /* namespace blocks */
}/* namespace gr */
|
