1/**************************************************************************** 2** libebml : parse EBML files, see http://embl.sourceforge.net/ 3** 4** <file/class description> 5** 6** Copyright (C) 2002-2005 Steve Lhomme. All rights reserved. 7** 8** This library is free software; you can redistribute it and/or 9** modify it under the terms of the GNU Lesser General Public 10** License as published by the Free Software Foundation; either 11** version 2.1 of the License, or (at your option) any later version. 12** 13** This library is distributed in the hope that it will be useful, 14** but WITHOUT ANY WARRANTY; without even the implied warranty of 15** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16** Lesser General Public License for more details. 17** 18** You should have received a copy of the GNU Lesser General Public 19** License along with this library; if not, write to the Free Software 20** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21** 22** See http://www.matroska.org/license/lgpl/ for LGPL licensing information. 23** 24** Contact license@matroska.org if any conditions of this licensing are 25** not clear to you. 26** 27**********************************************************************/ 28 29/*! 30 \file 31 \version \$Id: EbmlDate.h 1079 2005-03-03 13:18:14Z robux4 $ 32 \author Steve Lhomme <robux4 @ users.sf.net> 33*/ 34#ifndef LIBEBML_DATE_H 35#define LIBEBML_DATE_H 36 37#include "EbmlTypes.h" 38#include "EbmlElement.h" 39 40START_LIBEBML_NAMESPACE 41 42/*! 43 \class EbmlDate 44 \brief Handle all operations related to an EBML date 45*/ 46class EBML_DLL_API EbmlDate : public EbmlElement { 47 public: 48 EbmlDate() :EbmlElement(8, false), myDate(0) {} 49 EbmlDate(const EbmlDate & ElementToClone); 50 51 /*! 52 \brief set the date with a UNIX/C/EPOCH form 53 \param NewDate UNIX/C date in UTC (no timezone) 54 */ 55 void SetEpochDate(int32 NewDate) {bValueIsSet = true; myDate = int64(NewDate - UnixEpochDelay) * 1000000000; bValueIsSet = true;} 56 57 /*! 58 \brief get the date with a UNIX/C/EPOCH form 59 \note the date is in UTC (no timezone) 60 */ 61 int32 GetEpochDate() const {return int32(myDate/1000000000 + UnixEpochDelay);} 62 63 bool ValidateSize() const {return ((Size == 8) || (Size == 0));} 64 65 /*! 66 \note no Default date handled 67 */ 68 uint64 UpdateSize(bool bKeepIntact = false, bool bForceRender = false) { 69 if(!bValueIsSet) 70 Size = 0; 71 else 72 Size = 8; 73 return Size; 74 } 75 76 bool operator<(const EbmlDate & EltCmp) const {return myDate < EltCmp.myDate;} 77 78 uint64 ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA); 79 80 bool IsDefaultValue() const { 81 return false; 82 } 83 84 protected: 85 uint32 RenderData(IOCallback & output, bool bForceRender, bool bKeepIntact = false); 86 87 int64 myDate; ///< internal format of the date 88 89 static const uint64 UnixEpochDelay; 90}; 91 92END_LIBEBML_NAMESPACE 93 94#endif // LIBEBML_DATE_H 95