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
|
/* -*- c++ -*- */
/*
* Copyright 2015-2016 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "protocol_formatter_async_impl.h"
#include <gnuradio/io_signature.h>
#include <stdio.h>
#include <volk/volk.h>
namespace gr {
namespace digital {
protocol_formatter_async::sptr
protocol_formatter_async::make(const header_format_base::sptr& format)
{
return gnuradio::get_initial_sptr(new protocol_formatter_async_impl(format));
}
protocol_formatter_async_impl::protocol_formatter_async_impl(
const header_format_base::sptr& format)
: block("protocol_formatter_async",
io_signature::make(0, 0, 0),
io_signature::make(0, 0, 0))
{
d_format = format;
d_in_port = pmt::mp("in");
d_hdr_port = pmt::mp("header");
d_pld_port = pmt::mp("payload");
message_port_register_in(d_in_port);
message_port_register_out(d_hdr_port);
message_port_register_out(d_pld_port);
set_msg_handler(d_in_port, [this](pmt::pmt_t msg) { this->append(msg); });
}
protocol_formatter_async_impl::~protocol_formatter_async_impl() {}
void protocol_formatter_async_impl::append(pmt::pmt_t msg)
{
// extract input pdu
pmt::pmt_t meta(pmt::car(msg));
pmt::pmt_t input(pmt::cdr(msg));
pmt::pmt_t header, output;
size_t pkt_len = 0;
const uint8_t* bytes_in = pmt::u8vector_elements(input, pkt_len);
// Pad the payload with 0's
uint8_t* payload =
(uint8_t*)volk_malloc(pkt_len * sizeof(uint8_t), volk_get_alignment());
memcpy(payload, bytes_in, pkt_len * sizeof(uint8_t));
output = pmt::init_u8vector(pkt_len, payload);
volk_free(payload);
// Build the header from the input, metadata, and format
d_format->format(pkt_len, bytes_in, header, meta);
// Package and publish
pmt::pmt_t hdr_pdu = pmt::cons(meta, header);
pmt::pmt_t pld_pdu = pmt::cons(meta, output);
message_port_pub(d_hdr_port, hdr_pdu);
message_port_pub(d_pld_port, pld_pdu);
}
} /* namespace digital */
} /* namespace gr */
|
