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ais_bitstring.h
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/**************************************************************************
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* Copyright (C) 2010 by David S. Register *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, see <https://www.gnu.org/licenses/>. *
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**************************************************************************/
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#ifndef AIS_BITSTRING_H_
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#define AIS_BITSTRING_H_
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#define AIS_MAX_MESSAGE_LEN \
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(10 * 82)
// AIS Spec allows up to 9 sentences per message, 82 bytes each
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class
AisBitstring
{
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public
:
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AisBitstring
(
const
char
*str);
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unsigned
char
to_6bit(
const
char
c);
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int
GetInt
(
int
sp,
int
len,
bool
signed_flag =
false
);
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int
GetStr(
int
sp,
int
bit_len,
char
*dest,
int
max_len);
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int
GetBitCount();
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private
:
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unsigned
char
bitbytes[AIS_MAX_MESSAGE_LEN];
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int
byte_length;
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};
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#endif
AisBitstring
Definition
ais_bitstring.h:29
AisBitstring::GetInt
int GetInt(int sp, int len, bool signed_flag=false)
sp is starting bit, 1-based
Definition
ais_bitstring.cpp:56
model
include
model
ais_bitstring.h
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