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  1. /*
  2.  * Copyright (c) 2001-2003, David Janssens
  3.  * Copyright (c) 2002-2003, Yannick Verschueren
  4.  * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
  5.  * Copyright (c) 2005, Hervé Drolon, FreeImage Team
  6.  * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
  7.  * Copyright (c) 2005-2006, Dept. of Electronic and Information Engineering, Universita' degli Studi di Perugia, Italy
  8.  * All rights reserved.
  9.  *
  10.  * Redistribution and use in source and binary forms, with or without
  11.  * modification, are permitted provided that the following conditions
  12.  * are met:
  13.  * 1. Redistributions of source code must retain the above copyright
  14.  *    notice, this list of conditions and the following disclaimer.
  15.  * 2. Redistributions in binary form must reproduce the above copyright
  16.  *    notice, this list of conditions and the following disclaimer in the
  17.  *    documentation and/or other materials provided with the distribution.
  18.  *
  19.  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  20.  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23.  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24.  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25.  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26.  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27.  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28.  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29.  * POSSIBILITY OF SUCH DAMAGE.
  30.  */
  31.  
  32. #ifdef USE_JPWL
  33.  
  34. /**
  35. @file crc.h
  36. @brief Functions used to compute the 16- and 32-bit CRC of byte arrays
  37.  
  38. */
  39.  
  40. #ifndef __CRC16_HEADER__
  41. #define __CRC16_HEADER__
  42.  
  43. /** file: CRC16.HPP
  44.  *
  45.  * CRC - Cyclic Redundancy Check (16-bit)
  46.  *
  47.  * A CRC-checksum is used to be sure, the data hasn't changed or is false.
  48.  * To create a CRC-checksum, initialise a check-variable (unsigned short),
  49.  * and set this to zero. Than call for every byte in the file (e.g.) the
  50.  * procedure updateCRC16 with this check-variable as the first parameter,
  51.  * and the byte as the second. At the end, the check-variable contains the
  52.  * CRC-checksum.
  53.  *
  54.  * implemented by Michael Neumann, 14.06.1998
  55.  *
  56.  */
  57. void updateCRC16(unsigned short *, unsigned char);
  58.  
  59. #endif /* __CRC16_HEADER__ */
  60.  
  61.  
  62. #ifndef __CRC32_HEADER__
  63. #define __CRC32_HEADER__
  64.  
  65. /** file: CRC32.HPP
  66.  *
  67.  * CRC - Cyclic Redundancy Check (32-bit)
  68.  *
  69.  * A CRC-checksum is used to be sure, the data hasn't changed or is false.
  70.  * To create a CRC-checksum, initialise a check-variable (unsigned short),
  71.  * and set this to zero. Than call for every byte in the file (e.g.) the
  72.  * procedure updateCRC32 with this check-variable as the first parameter,
  73.  * and the byte as the second. At the end, the check-variable contains the
  74.  * CRC-checksum.
  75.  *
  76.  * implemented by Michael Neumann, 14.06.1998
  77.  *
  78.  */
  79. void updateCRC32(unsigned long *, unsigned char);
  80.  
  81. #endif /* __CRC32_HEADER__ */
  82.  
  83.  
  84. #endif /* USE_JPWL */
  85.