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 41START_LIBEBML_NAMESPACE 42 43/*! 44 \class EbmlId 45*/ 46class 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 82END_LIBEBML_NAMESPACE 83 84#endif // LIBEBML_ID_H 85