ebml/EbmlDate.h

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/****************************************************************************
** libebml : parse EBML files, see http://embl.sourceforge.net/
**
** <file/class description>
**
** Copyright (C) 2002-2010 Steve Lhomme.  All rights reserved.
**
** This library is free software; you can redistribute it and/or
** modify it under the terms of the GNU Lesser General Public
** License as published by the Free Software Foundation; either
** version 2.1 of the License, or (at your option) any later version.
**
** This library is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
** Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public
** License along with this library; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
**
** See http://www.matroska.org/license/lgpl/ for LGPL licensing information.
**
** Contact license@matroska.org if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef LIBEBML_DATE_H
#define LIBEBML_DATE_H

#include "EbmlTypes.h"
#include "EbmlElement.h"

START_LIBEBML_NAMESPACE

class EBML_DLL_API EbmlDate : public EbmlElement {
        public:
                EbmlDate() :EbmlElement(8, false), myDate(0) {}
                EbmlDate(const EbmlDate & ElementToClone);

                void SetEpochDate(int32 NewDate) {myDate = int64(NewDate - UnixEpochDelay) * 1000000000; SetValueIsSet();}

                int32 GetEpochDate() const {return int32(myDate/1000000000 + UnixEpochDelay);}

                virtual bool ValidateSize() const {return IsFiniteSize() && ((GetSize() == 8) || (GetSize() == 0));}

                filepos_t UpdateSize(bool bWithDefault = false, bool bForceRender = false) {
                        if(!ValueIsSet())
                                SetSize_(0);
                        else
                                SetSize_(8);
                        return GetSize();
                }

                virtual bool IsSmallerThan(const EbmlElement *Cmp) const;

                filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA);

                bool IsDefaultValue() const {
                        return false;
                }

#if defined(EBML_STRICT_API)
    private:
#else
    protected:
#endif
                filepos_t RenderData(IOCallback & output, bool bForceRender, bool bWithDefault = false);

                int64 myDate; 

                static const uint64 UnixEpochDelay;
};

END_LIBEBML_NAMESPACE

#endif // LIBEBML_DATE_H

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