/****************************************************************************

** 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: EbmlId.h 936 2004-11-10 20:46:28Z mosu $

  \author Steve Lhomme     <robux4 @ users.sf.net>

*/

#ifndef LIBEBML_ID_H

#define LIBEBML_ID_H

#include "EbmlTypes.h"

namespace libebml {

#if defined(EBML_STRICT_API)

#define EBML_ID_VALUE(id)  (id).GetValue()

#define EBML_ID_LENGTH(id) (id).GetLength()

#else

#define EBML_ID_VALUE(id)  (id).Value

#define EBML_ID_LENGTH(id) (id).Length

#endif

/*!

  \class EbmlId

*/

class EBML_DLL_API EbmlId {

  public:

    EbmlId(const binary aValue[4], const unsigned int aLength)

      :Length(aLength)

    {

      Value = 0;

      unsigned int i;

      for (i=0; i<aLength; i++) {

        Value <<= 8;

        Value += aValue[i];

      }

    }

    EbmlId(const uint32 aValue, const unsigned int aLength)

      :Value(aValue), Length(aLength) {}

    inline bool operator==(const EbmlId & TestId) const

    {

      return ((TestId.Length == Length) && (TestId.Value == Value));

    }

    inline bool operator!=(const EbmlId & TestId) const

    {

      return !(*this == TestId);

    }

    inline void Fill(binary * Buffer) const {

      unsigned int i;

      for (i = 0; i<Length; i++) {

        Buffer[i] = (Value >> (8*(Length-i-1))) & 0xFF;

      }

    }

        inline size_t GetLength() const { return Length; }

        inline uint32 GetValue() const { return Value; }

#if defined(EBML_STRICT_API)

    private:

#endif

    uint32 Value;

    size_t Length;

};

} // namespace libebml

#endif // LIBEBML_ID_H