GNU Radio Manual and C++ API Reference
3.7.5
The Free & Open Software Radio Ecosystem
All
Classes
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Properties
Friends
Macros
Groups
Pages
packet_sink.h
Go to the documentation of this file.
1
/* -*- c++ -*- */
2
/*
3
* Copyright 2005,2012 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
#ifndef INCLUDED_GR_PACKET_SINK_H
24
#define INCLUDED_GR_PACKET_SINK_H
25
26
#include <
gnuradio/digital/api.h
>
27
#include <
gnuradio/sync_block.h
>
28
#include <
gnuradio/msg_queue.h
>
29
30
namespace
gr {
31
namespace
digital {
32
33
/*!
34
* \brief process received bits looking for packet sync, header,
35
* and process bits into packet
36
* \ingroup packet_operators_blk
37
*
38
* \details
39
* input: stream of symbols to be sliced.
40
*
41
* output: none. Pushes assembled packet into target queue
42
*
43
* The packet sink takes in a stream of binary symbols that are
44
* sliced around 0. The bits are then checked for the \p
45
* sync_vector to determine find and decode the packet. It then
46
* expects a fixed length header of 2 16-bit shorts containing the
47
* payload length, followed by the payload. If the 2 16-bit shorts
48
* are not identical, this packet is ignored. Better algs are
49
* welcome.
50
*
51
* This block is not very useful anymore as it only works with
52
* 2-level modulations such as BPSK or GMSK. The block can
53
* generally be replaced with a correlate access code and frame
54
* sink blocks.
55
*/
56
class
DIGITAL_API
packet_sink
:
virtual
public
sync_block
57
{
58
public
:
59
// gr::digital::packet_sink::sptr
60
typedef
boost::shared_ptr<packet_sink>
sptr
;
61
62
/*!
63
* Make a packet_sink block.
64
*
65
* \param sync_vector The synchronization vector as a vector of 1's and 0's.
66
* \param target_queue The message queue that packets are sent to.
67
* \param threshold Number of bits that can be incorrect in the \p sync_vector.
68
*/
69
static
sptr
make(
const
std::vector<unsigned char>& sync_vector,
70
msg_queue::sptr
target_queue,
71
int
threshold=-1);
72
73
//! return true if we detect carrier
74
virtual
bool
carrier_sensed()
const
= 0;
75
};
76
77
}
/* namespace digital */
78
}
/* namespace gr */
79
80
#endif
/* INCLUDED_GR_PACKET_SINK_H */
gr-digital
include
gnuradio
digital
packet_sink.h
Generated on Fri Oct 3 2014 00:33:51 for GNU Radio Manual and C++ API Reference by
1.8.1.2