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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 file is part of libebml.
**
** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
**
** See http://www.gnu.org/licenses/lgpl-2.1.html for LGPL licensing information.
**
** Contact license@matroska.org if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
/*!
\file
\version \$Id$
\author Steve Lhomme <robux4 @ users.sf.net>
\author Julien Coloos <suiryc @ users.sf.net>
\author Moritz Bunkus <moritz @ bunkus.org>
*/
#ifndef LIBEBML_SINTEGER_H
#define LIBEBML_SINTEGER_H
#include <cassert>
#include "EbmlTypes.h"
#include "EbmlElement.h"
namespace libebml {
const int DEFAULT_INT_SIZE = 1; ///< optimal size stored
/*!
\class EbmlSInteger
\brief Handle all operations on a signed integer EBML element
*/
class EBML_DLL_API EbmlSInteger : public EbmlElement {
public:
EbmlSInteger();
EbmlSInteger(int64 DefaultValue);
EbmlSInteger(const EbmlSInteger & ElementToClone) = default;
EbmlSInteger & operator = (int64 NewValue) {Value = NewValue; SetValueIsSet(); return *this;}
/*!
Set the default size of the integer (usually 1,2,4 or 8)
*/
void SetDefaultSize(uint64 nDefaultSize = DEFAULT_INT_SIZE) override {EbmlElement::SetDefaultSize(nDefaultSize); SetSize_(nDefaultSize);}
bool ValidateSize() const override {return IsFiniteSize() && (GetSize() <= 8);}
filepos_t RenderData(IOCallback & output, bool bForceRender, bool bWithDefault = false) override;
filepos_t ReadData(IOCallback & input, ScopeMode ReadFully = SCOPE_ALL_DATA) override;
filepos_t UpdateSize(bool bWithDefault = false, bool bForceRender = false) override;
bool IsSmallerThan(const EbmlElement *Cmp) const override;
operator int8() const;
operator int16() const;
operator int32() const;
operator int64() const;
EbmlSInteger &SetValue(int64 NewValue);
int64 GetValue() const;
void SetDefaultValue(int64 aValue) {assert(!DefaultISset()); DefaultValue = aValue; SetDefaultIsSet();}
int64 DefaultVal() const {assert(DefaultISset()); return DefaultValue;}
bool IsDefaultValue() const override {
return (DefaultISset() && Value == DefaultValue);
}
#if defined(EBML_STRICT_API)
private:
#else
protected:
#endif
int64 Value; /// The actual value of the element
int64 DefaultValue;
};
} // namespace libebml
#endif // LIBEBML_SINTEGER_H
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