src/add-ons/media/plugins/matroska/libebml/EbmlDate.cpp

   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.cpp 1079 2005-03-03 13:18:14Z robux4 $
  32         \author Steve Lhomme     <robux4 @ users.sf.net>
  33 */
  34 #include <cassert>
  35
  36 #include "ebml/EbmlDate.h"
  37
  38 START_LIBEBML_NAMESPACE
  39
  40 const uint64 EbmlDate::UnixEpochDelay = 978307200; // 2001/01/01 00:00:00 UTC
  41
  42 EbmlDate::EbmlDate(const EbmlDate & ElementToClone)
  43 :EbmlElement(ElementToClone)
  44 {
  45         myDate = ElementToClone.myDate;
  46 }
  47
  48 uint64 EbmlDate::ReadData(IOCallback & input, ScopeMode ReadFully)
  49 {
  50         if (ReadFully != SCOPE_NO_DATA)
  51         {
  52                 if (Size != 0) {
  53                         assert(Size == 8);
  54                         binary Buffer[8];
  55                         input.readFully(Buffer, Size);
  56
  57                         big_int64 b64;
  58                         b64.Eval(Buffer);
  59
  60                         myDate = b64;
  61                         bValueIsSet = true;
  62                 }
  63         }
  64
  65         return Size;
  66 }
  67
  68 uint32 EbmlDate::RenderData(IOCallback & output, bool bForceRender, bool bKeepIntact)
  69 {
  70         if (Size != 0) {
  71                 assert(Size == 8);
  72                 big_int64 b64(myDate);
  73
  74                 output.writeFully(&b64.endian(),Size);
  75         }
  76
  77         return Size;
  78 }
  79
  80 END_LIBEBML_NAMESPACE