source: 3DVCSoftware/branches/HTM-DEV-2.0-dev3-Zhejiang/source/Lib/libmd5/MD5.h @ 560

Last change on this file since 560 was 324, checked in by tech, 11 years ago

Initial development version for update to latest HM version.
Includes MV-HEVC and basic extensions for 3D-HEVC.

  • Property svn:eol-style set to native
File size: 2.9 KB
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1/* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license. 
5 *
6 * Copyright (c) 2010-2013, ITU/ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 *  * Redistributions of source code must retain the above copyright notice,
13 *    this list of conditions and the following disclaimer.
14 *  * Redistributions in binary form must reproduce the above copyright notice,
15 *    this list of conditions and the following disclaimer in the documentation
16 *    and/or other materials provided with the distribution.
17 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
18 *    be used to endorse or promote products derived from this software without
19 *    specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33#pragma once
34#include "libmd5.h"
35
36//! \ingroup libMD5
37//! \{
38
39class MD5
40{
41public:
42  /**
43   * initialize digest state
44   */
45  MD5()
46  {
47    MD5Init(&m_state);
48  }
49
50  /**
51   * compute digest over buf of length len.
52   * multiple calls may extend the digest over more data.
53   */
54  void update(unsigned char *buf, unsigned len)
55  {
56    MD5Update(&m_state, buf, len);
57  }
58
59  /**
60   * flush any outstanding MD5 data, write the digest into digest.
61   */
62  void finalize(unsigned char digest[16])
63  {
64    MD5Final(digest, &m_state);
65  }
66
67private:
68  context_md5_t m_state;
69};
70
71
72/**
73 * Produce an ascii(hex) representation of picture digest.
74 *
75 * Returns: a statically allocated null-terminated string.  DO NOT FREE.
76 */
77inline const char*
78digestToString(const unsigned char digest[3][16], int numChar)
79{
80  const char* hex = "0123456789abcdef";
81  static char string[99];
82  int cnt=0;
83  for(int yuvIdx=0; yuvIdx<3; yuvIdx++)
84  {
85    for (int i = 0; i < numChar; i++)
86    {
87      string[cnt++] = hex[digest[yuvIdx][i] >> 4];
88      string[cnt++] = hex[digest[yuvIdx][i] & 0xf];
89    }
90    string[cnt++] = ',';
91  }
92
93  string[cnt-1] = '\0';
94  return string;
95}
96//! \}
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