1 /* -*- c++ -*- */
2 /*
3 * Copyright 2010,2013 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 "burst_tagger_impl.h"
28 #include <gnuradio/io_signature.h>
29 #include <string.h>
30
31 namespace gr {
32 namespace blocks {
33
make(size_t itemsize)34 burst_tagger::sptr burst_tagger::make(size_t itemsize)
35 {
36 return gnuradio::get_initial_sptr(new burst_tagger_impl(itemsize));
37 }
38
burst_tagger_impl(size_t itemsize)39 burst_tagger_impl::burst_tagger_impl(size_t itemsize)
40 : sync_block("burst_tagger",
41 io_signature::make2(2, 2, itemsize, sizeof(short)),
42 io_signature::make(1, 1, itemsize)),
43 d_itemsize(itemsize),
44 d_state(false)
45 {
46 std::stringstream str;
47 str << name() << unique_id();
48
49 d_true_key = pmt::string_to_symbol("burst");
50 d_true_value = pmt::PMT_T;
51
52 d_false_key = pmt::string_to_symbol("burst");
53 d_false_value = pmt::PMT_F;
54
55 d_id = pmt::string_to_symbol(str.str());
56 }
57
~burst_tagger_impl()58 burst_tagger_impl::~burst_tagger_impl() {}
59
set_true_tag(const std::string & key,bool value)60 void burst_tagger_impl::set_true_tag(const std::string& key, bool value)
61 {
62 d_true_key = pmt::string_to_symbol(key);
63 if (value == true) {
64 d_true_value = pmt::PMT_T;
65 } else {
66 d_true_value = pmt::PMT_F;
67 }
68 }
69
set_false_tag(const std::string & key,bool value)70 void burst_tagger_impl::set_false_tag(const std::string& key, bool value)
71 {
72 d_false_key = pmt::string_to_symbol(key);
73 if (value == true) {
74 d_false_value = pmt::PMT_T;
75 } else {
76 d_false_value = pmt::PMT_F;
77 }
78 }
79
work(int noutput_items,gr_vector_const_void_star & input_items,gr_vector_void_star & output_items)80 int burst_tagger_impl::work(int noutput_items,
81 gr_vector_const_void_star& input_items,
82 gr_vector_void_star& output_items)
83 {
84 const char* signal = (const char*)input_items[0];
85 const short* trigger = (const short*)input_items[1];
86 char* out = (char*)output_items[0];
87
88 memcpy(out, signal, noutput_items * d_itemsize);
89
90 for (int i = 0; i < noutput_items; i++) {
91 if (trigger[i] > 0) {
92 if (d_state == false) {
93 d_state = true;
94 add_item_tag(0, nitems_written(0) + i, d_true_key, d_true_value, d_id);
95 }
96 } else {
97 if (d_state == true) {
98 d_state = false;
99 add_item_tag(0, nitems_written(0) + i, d_false_key, d_false_value, d_id);
100 }
101 }
102 }
103 return noutput_items;
104 }
105
106 } /* namespace blocks */
107 } /* namespace gr */
108