src/helper/binarybuffer.h

   1 /***************************************************************************
   2  *   Copyright (C) 2004, 2005 by Dominic Rath                              *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifndef BINARYBUFFER_H
  21 #define BINARYBUFFER_H
  22
  23 #include "types.h"
  24
  25 /* support functions to access arbitrary bits in a byte array
  26  * flip_u32 inverses the bit order inside a 32-bit word (31..0 -> 0..31)
  27  */
  28
  29 extern int buf_set_u32(u8* buffer, unsigned int first, unsigned int num, u32 value);
  30 extern u32 buf_get_u32(u8* buffer, unsigned int first, unsigned int num);
  31
  32 extern u32 flip_u32(u32 value, unsigned int num);
  33
  34 extern int buf_cmp(u8 *buf1, u8 *buf2, int size);
  35 extern int buf_cmp_mask(u8 *buf1, u8 *buf2, u8 *mask, int size);
  36 extern u8* buf_cpy(u8 *from, u8 *to, int size);
  37
  38 extern u8* buf_set_ones(u8 *buf, int count);
  39 extern u8* buf_set_buf(u8 *src, int src_start, u8 *dst, int dst_start, int len);
  40
  41 extern int str_to_buf(char* str, int len, u8 *bin_buf, int buf_size, int radix);
  42 extern char* buf_to_str(u8 *buf, int size, int radix);
  43
  44 struct scan_field_s;
  45 extern int buf_to_u32_handler(u8 *in_buf, void *priv, struct scan_field_s *field);
  46
  47 #define CEIL(m, n)      ((m + n - 1) / n)
  48
  49 #endif /* BINARYBUFFER_H */