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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/* -*- 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 <boost/format.hpp>
#include <gr_io_signature.h>
#include "packet_headerparser_b_impl.h"
#define msg_port_id pmt::mp("header_data")
namespace gr {
namespace digital {
packet_headerparser_b::sptr
packet_headerparser_b::make(long header_len, const std::string &len_tag_key)
{
const packet_header_default::sptr header_formatter(
new packet_header_default(header_len, len_tag_key)
);
return gnuradio::get_initial_sptr (new packet_headerparser_b_impl(header_formatter));
}
packet_headerparser_b::sptr
packet_headerparser_b::make(const gr::digital::packet_header_default::sptr &header_formatter)
{
return gnuradio::get_initial_sptr (new packet_headerparser_b_impl(header_formatter));
}
packet_headerparser_b_impl::packet_headerparser_b_impl(const gr::digital::packet_header_default::sptr &header_formatter)
: gr_sync_block("packet_headerparser_b",
gr_make_io_signature(1, 1, sizeof (unsigned char)),
gr_make_io_signature(0, 0, 0)),
d_header_formatter(header_formatter)
{
message_port_register_out(msg_port_id);
set_output_multiple(header_formatter->header_len());
}
packet_headerparser_b_impl::~packet_headerparser_b_impl()
{
}
int
packet_headerparser_b_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const unsigned char *in = (const unsigned char *) input_items[0];
if (noutput_items < d_header_formatter->header_len()) {
return 0;
}
std::vector<gr_tag_t> tags;
if (!d_header_formatter->header_parser(in, tags)) {
GR_LOG_INFO(d_logger, boost::format("Detected an invalid packet at item %1%") % nitems_read(0));
message_port_pub(msg_port_id, pmt::PMT_F);
} else {
pmt::pmt_t dict(pmt::make_dict());
for (unsigned i = 0; i < tags.size(); i++) {
pmt::dict_add(dict, tags[i].key, tags[i].value);
}
message_port_pub(msg_port_id, dict);
}
return d_header_formatter->header_len();
}
} /* namespace digital */
} /* namespace gr */
|
