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

   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
  40 START_LIBEBML_NAMESPACE
  41
  42 /*!
  43     \class EbmlDate
  44     \brief Handle all operations related to an EBML date
  45 */
  46 class 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
  92 END_LIBEBML_NAMESPACE
  93
  94 #endif // LIBEBML_DATE_H