// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#include <3gplibrary/mp4config.h>

/*

 * Function:

 *

 *   mp4_u16 u16endian(mp4_u16 u)

 *

 * Description:

 *

 *   This function converts the input parameter u between network byte

 *   order (big endian) and current computer byte order.

 *

 *   Note: Intel based Windows system is little endian.

 *         ARM based Symbian OS is little endian.

 *

 * Parameters:

 *

 *   u     Input value

 *

 * Return value:

 *

 *   Converted value

 *

 */

mp4_u16 u16endian(mp4_u16 u)

{

  mp4_u16 result;

  ((mp4_u8 *)&result)[0] = ((mp4_u8 *)&u)[1];

  ((mp4_u8 *)&result)[1] = ((mp4_u8 *)&u)[0];

  return result;

}

/*

 * Function:

 *

 *   mp4_u32 u32endian(mp4_u32 u)

 *

 * Description:

 *

 *   This function converts the input parameter u between network byte

 *   order (big endian) and current computer byte order.

 *

 *   Note: Intel based Windows system is little endian.

 *         ARM based Symbian OS is little endian.

 *

 * Parameters:

 *

 *   u     Input value

 *

 * Return value:

 *

 *   Converted value

 *

 */

mp4_u32 u32endian(mp4_u32 u)

{

  mp4_u32 result;

  ((mp4_u8 *)&result)[0] = ((mp4_u8 *)&u)[3];

  ((mp4_u8 *)&result)[1] = ((mp4_u8 *)&u)[2];

  ((mp4_u8 *)&result)[2] = ((mp4_u8 *)&u)[1];

  ((mp4_u8 *)&result)[3] = ((mp4_u8 *)&u)[0];

  return result;

}

/*

 * Function:

 *

 *   mp4_i32 i32endian(mp4_i32 i)

 *

 * Description:

 *

 *   This function converts the input parameter i between network byte

 *   order (big endian) and current computer byte order.

 *

 *   Note: Intel based Windows system is little endian.

 *         ARM based Symbian OS is little endian.

 *

 * Parameters:

 *

 *   i     Input value

 *

 * Return value:

 *

 *   Converted value

 *

 */

mp4_i32 i32endian(mp4_i32 i)

{

  mp4_i32 result;

  ((mp4_u8 *)&result)[0] = ((mp4_u8 *)&i)[3];

  ((mp4_u8 *)&result)[1] = ((mp4_u8 *)&i)[2];

  ((mp4_u8 *)&result)[2] = ((mp4_u8 *)&i)[1];

  ((mp4_u8 *)&result)[3] = ((mp4_u8 *)&i)[0];

  return result;

}

/*

 * Function:

 *

 *   mp4_u64 u64endian(mp4_u64 u)

 *

 * Description:

 *

 *   This function converts the input parameter u between network byte

 *   order (big endian) and current computer byte order.

 *

 *   Note: Intel based Windows system is little endian.

 *         ARM based Symbian OS is little endian.

 *

 * Parameters:

 *

 *   u     Input value

 *

 * Return value:

 *

 *   Converted value

 *

 */

mp4_u64 u64endian(mp4_u64 u)

{

  mp4_u64 result;

  ((mp4_u8 *)&result)[0] = ((mp4_u8 *)&u)[7];

  ((mp4_u8 *)&result)[1] = ((mp4_u8 *)&u)[6];

  ((mp4_u8 *)&result)[2] = ((mp4_u8 *)&u)[5];

  ((mp4_u8 *)&result)[3] = ((mp4_u8 *)&u)[4];

  ((mp4_u8 *)&result)[4] = ((mp4_u8 *)&u)[3];

  ((mp4_u8 *)&result)[5] = ((mp4_u8 *)&u)[2];

  ((mp4_u8 *)&result)[6] = ((mp4_u8 *)&u)[1];

  ((mp4_u8 *)&result)[7] = ((mp4_u8 *)&u)[0];

  return result;

}

// End of File