GNU Radio C++ API Reference: crc32_async_bb.h Source File

| GNU Radio C++ API Reference 3.10.12.0 The Free & Open Software Radio Ecosystem |

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crc32_async_bb.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2014 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * SPDX-License-Identifier: GPL-3.0-or-later
8 *
9 */
10
11
12#ifndef INCLUDED_DIGITAL_CRC32_ASYNC_BB_H
13#define INCLUDED_DIGITAL_CRC32_ASYNC_BB_H
14
15#include <gnuradio/block.h>
16#include <gnuradio/digital/api.h>
17
18namespace gr {
19namespace digital {
20
21/*!
22 * \brief Byte-stream CRC block for async messages
23 * \ingroup packet_operators_blk
24 * \ingroup deprecated_blk
25 *
26 * \details
27 *
28 * Processes packets (as async PDU messages) for CRC32. The \p
29 * check parameter determines if the block acts to check and strip
30 * the CRC or to calculate and append the CRC32.
31 *
32 * The input PDU is expected to be a message of packet bytes.
33 *
34 * When using check mode, if the CRC passes, the output is a
35 * payload of the message with the CRC stripped, so the output
36 * will be 4 bytes smaller than the input.
37 *
38 * When using calculate mode (check == false), then the CRC is
39 * calculated on the PDU and appended to it. The output is then 4
40 * bytes longer than the input.
41 *
42 * This block implements the CRC32 using the standard generator 0x04C11DB7.
43 */
44 class DIGITAL_API crc32_async_bb : virtual public block
45{
46public:
47 typedef std::shared_ptr<crc32_async_bb> sptr;
48
49 /*!
50 * \param check Set to true if you want to check CRC, false to create CRC.
51 */
52 static sptr make(bool check = false);
53};
54
55} // namespace digital
56} // namespace gr
57
58#endif /* INCLUDED_DIGITAL_CRC32_ASYNC_BB_H */
gr::block::block
block(void)
Definition gnuradio-runtime/include/gnuradio/block.h:806
gr::digital::crc32_async_bb
Byte-stream CRC block for async messages.
Definition crc32_async_bb.h:45
gr::digital::crc32_async_bb::make
static sptr make(bool check=false)
gr::digital::crc32_async_bb::sptr
std::shared_ptr< crc32_async_bb > sptr
Definition crc32_async_bb.h:47
block.h
api.h
DIGITAL_API
#define DIGITAL_API
Definition gr-digital/include/gnuradio/digital/api.h:18
gr::digital
Definition adaptive_algorithm.h:22
gr
GNU Radio logging wrapper.
Definition basic_block.h:29