OpenCPN Partial API docs
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ais_bitstring.h
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1/**************************************************************************
2 * Copyright (C) 2010 by David S. Register *
3 * *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
8 * *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
13 * *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, see <https://www.gnu.org/licenses/>. *
16 **************************************************************************/
17
24#ifndef AIS_BITSTRING_H_
25#define AIS_BITSTRING_H_
26
27#define AIS_MAX_MESSAGE_LEN \
28 (10 * 82) // AIS Spec allows up to 9 sentences per message, 82 bytes each
30public:
31 AisBitstring(const char *str);
32 unsigned char to_6bit(const char c);
33
35 int GetInt(int sp, int len, bool signed_flag = false);
36 int GetStr(int sp, int bit_len, char *dest, int max_len);
37 int GetBitCount();
38
39private:
40 unsigned char bitbytes[AIS_MAX_MESSAGE_LEN];
41 int byte_length;
42};
43
44#endif
int GetInt(int sp, int len, bool signed_flag=false)
sp is starting bit, 1-based