1 /* -*- c++ -*- */
2 /*
3 * Copyright 2012 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include "multiply_conjugate_cc_impl.h"
28 #include <gnuradio/io_signature.h>
29 #include <volk/volk.h>
30
31 namespace gr {
32 namespace blocks {
33
make(size_t vlen)34 multiply_conjugate_cc::sptr multiply_conjugate_cc::make(size_t vlen)
35 {
36 return gnuradio::get_initial_sptr(new multiply_conjugate_cc_impl(vlen));
37 }
38
multiply_conjugate_cc_impl(size_t vlen)39 multiply_conjugate_cc_impl::multiply_conjugate_cc_impl(size_t vlen)
40 : sync_block("multiply_conjugate_cc",
41 io_signature::make(2, 2, sizeof(gr_complex) * vlen),
42 io_signature::make(1, 1, sizeof(gr_complex) * vlen)),
43 d_vlen(vlen)
44 {
45 const int alignment_multiple = volk_get_alignment() / sizeof(gr_complex);
46 set_alignment(std::max(1, alignment_multiple));
47 }
48
work(int noutput_items,gr_vector_const_void_star & input_items,gr_vector_void_star & output_items)49 int multiply_conjugate_cc_impl::work(int noutput_items,
50 gr_vector_const_void_star& input_items,
51 gr_vector_void_star& output_items)
52 {
53 gr_complex* in0 = (gr_complex*)input_items[0];
54 gr_complex* in1 = (gr_complex*)input_items[1];
55 gr_complex* out = (gr_complex*)output_items[0];
56 int noi = d_vlen * noutput_items;
57
58 volk_32fc_x2_multiply_conjugate_32fc(out, in0, in1, noi);
59
60 return noutput_items;
61 }
62
63 } /* namespace blocks */
64 } /* namespace gr */
65