/*

* Copyright (c) 2003, 2004 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:  TJ2kUtils class used to provide common public static

*                functions used by all classes in JP2KCodec.

*

*/

#ifndef __JP2KUTILS_H__

#define __JP2KUTILS_H__

//  INCLUDES

#include <e32base.h>

// CONSTANTS

const TInt KImplementationPrecision = 32;

// MACROS

// DATA TYPES

typedef TInt32 TPrecInt;

struct TDiv

    {

    TInt quot; // Quotient

    TInt rem;  // Remainder

    };

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  TJ2kUtils class used to provide common public static

*  methods used by all classes

*

*  JP2KCodec.dll

*  @since 2.6

*/

class TJ2kUtils

    {

    public:  // Constructors and destructor

    public: // New functions

        /**

        * Get the ceiling between two integers

        * @since 2.6

        * @param aL: first integer to compute.

        * @param aR: second integer to compute.

        * @return TInt32: the ceiling between two integers aL and aR.

        */

        static TInt32 CeilL( TInt32 aL, TInt32 aR );

        /**

        * Get the floor between two integers

        * @since 2.6

        * @param aL: first integer to compute.

        * @param aR: second integer to compute.

        * @return TInt32: the floor between two integers aL and aR.

        */

        static TInt32 FloorL( TInt32 aL, TInt32 aR );

        /**

        * Get the quotient and remainder

        * @since 2.6

        * @param aNum: first integer to compute.

        * @param aDenom: divisor integer.

        * @return TDiv: the structure contains the quotient and remainder.

        */

        static TDiv DivL( TInt aNum, TInt aDenom );

        /**

        * Get the log2 value of an integer

        * @since 2.6

        * @param aI: an integer to compute.

        * @return TInt32: the log2 value of the integer aI.

        */

        static TInt32 Log2( TUint32 aI );

        /**

        * Allocate 2-D array

        * @since 2.6

        * @param aRowSize: row size of the 2-D array.

        * @param aColSize: column size of the 2-D array.

        * @return TPrecInt**: a pointer of pointer to TPrecInt.

        */

        static TPrecInt** Alloc2DArrayL( TInt aRowSize, TInt aColSize );

        /**

        * Free 2-D array

        * @since 2.6

        * @param aPtr: a pointer of pointer to TPrecInt to be freed.

        */

        static void Free2DArray( TPrecInt **aPtr );

        /**

        * Wrapper to free 2-D array when put into TCleanupItem

        * @since 2.6

        * @param aPtr: a pointer of pointer to TAny to be freed.

        */

        static void Free2DArray( TAny *aPtr );

    public: // Functions from base classes

    protected:  // New functions        

    protected:  // Functions from base classes

    private:

    public:     // Data

    protected:  // Data

    private:    // Data

    public:     // Friend classes

    protected:  // Friend classes

    private:    // Friend classes

    };

#endif // __JP2KUTILS_H__