src/add-ons/media/plugins/matroska/libebml/ebml/EbmlId.h

   1 /****************************************************************************
   2 ** libebml : parse EBML files, see http://embl.sourceforge.net/
   3 **
   4 ** <file/class description>
   5 **
   6 ** Copyright (C) 2002-2004 Steve Lhomme.  All rights reserved.
   7 **
   8 ** This file is part of libebml.
   9 **
  10 ** This library is free software; you can redistribute it and/or
  11 ** modify it under the terms of the GNU Lesser General Public
  12 ** License as published by the Free Software Foundation; either
  13 ** version 2.1 of the License, or (at your option) any later version.
  14 **
  15 ** This library is distributed in the hope that it will be useful,
  16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 ** Lesser General Public License for more details.
  19 **
  20 ** You should have received a copy of the GNU Lesser General Public
  21 ** License along with this library; if not, write to the Free Software
  22 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23 **
  24 ** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
  25 **
  26 ** Contact license@matroska.org if any conditions of this licensing are
  27 ** not clear to you.
  28 **
  29 **********************************************************************/
  30
  31 /*!
  32         \file
  33         \version \$Id: EbmlId.h 936 2004-11-10 20:46:28Z mosu $
  34         \author Steve Lhomme     <robux4 @ users.sf.net>
  35 */
  36 #ifndef LIBEBML_ID_H
  37 #define LIBEBML_ID_H
  38
  39 #include "EbmlTypes.h"
  40
  41 START_LIBEBML_NAMESPACE
  42
  43 /*!
  44         \class EbmlId
  45 */
  46 class EBML_DLL_API EbmlId {
  47         public:
  48                 uint32 Value;
  49                 unsigned int Length;
  50
  51                 EbmlId(const binary aValue[4], const unsigned int aLength)
  52                         :Length(aLength)
  53                 {
  54                         Value = 0;
  55                         unsigned int i;
  56                         for (i=0; i<aLength; i++) {
  57                                 Value <<= 8;
  58                                 Value += aValue[i];
  59                         }
  60                 }
  61
  62                 EbmlId(const uint32 aValue, const unsigned int aLength)
  63                         :Value(aValue), Length(aLength) {}
  64
  65                 inline bool operator==(const EbmlId & TestId) const
  66                 {
  67                         return ((TestId.Length == Length) && (TestId.Value == Value));
  68                 }
  69                 inline bool operator!=(const EbmlId & TestId) const
  70                 {
  71                         return !(*this == TestId);
  72                 }
  73
  74                 inline void Fill(binary * Buffer) const {
  75                         unsigned int i;
  76                         for (i = 0; i<Length; i++) {
  77                                 Buffer[i] = (Value >> (8*(Length-i-1))) & 0xFF;
  78                         }
  79                 }
  80 };
  81
  82 END_LIBEBML_NAMESPACE
  83
  84 #endif // LIBEBML_ID_H